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180results about How to "Reduce jamming" patented technology

Electric pressure cooker capable of automatically exhausting

InactiveCN105768859ASimplify the automatic exhaust structureShorter drivelinesPressure-cookersMagnetic effectEngineering
The invention provides an electric pressure cooker capable of automatically exhausting. The electric pressure cooker comprises a cooker body, a cooker cover and a control circuit, wherein an exhaust pipe and a gravity hammer which is in sealed contact with the exhaust pipe are arranged on the cooker cover; a first connecting rod is additionally arranged on the cooker cover; a ferromagnetic material is arranged at the first end of the first connecting rod; the position, corresponding to the ferromagnetic material, of the cooker body, is provided with an electromagnet which can take a magnetic effect on the ferromagnetic material; the electromagnetic is electrically connected to the control circuit; the second end of the first connecting rod is in transmitted connection to the gravity hammer; and the gravity hammer is displaced directly or indirectly when the second end of the first connecting rod displaces upwards, and the gravity hammer is separated away from the port of the exhaust pipe. By virtue of the electromagnet and a lever linkage device which are mutually matched, the electric pressure cooker can simplify an automatically exhausting structure, shorten a power transmission route, reduce a probability of a jamming phenomenon in a power transmission process and improve product quality.
Owner:ZHONGSHAN YALESI ELECTRIC CO LTD

Composite magazine for chambering ammunition in a firearm

An improved magazine for use in existing firearms comprises a housing, a follower, a spring, a spring hold and a cap. The housing comprises protruded surfaces for structural strength and a projection that acts as a stop member to define the maximum insertion of the magazine into the firearm magazine well. The follower comprises two follower legs and a spring retainer, and travels up and down the housing. The perimeters of the follower and follower legs mirror the internal profile of the magazine housing for a well-defined travel path within the magazine housing. The spring hold comprises a spring retainer and a round protrusion that locks it into the cap via a circular cut. The cap comprises flanges that slide into the slots against the end stop at the bottom of the housing.
Owner:UNITED STATES OF AMERICA THE AS REPRESENTED BY THE SEC OF THE ARMY

Banknote processing apparatus

The invention discloses a banknote processing apparatus. The banknote processing apparatus comprises a deposit and withdrawal port, a banknote identification portion, a temporary storage portion, at least one banknote storage box, and an upper transmission channel, a lower transmission channel and a temporary storage transmission channel which are used for carrying banknotes, wherein the temporary storage portion is arranged at the rear side of the deposit and withdrawal port, the front end of the upper transmission channel is connected with an outlet end of the temporary storage portion and an outlet end of the deposit and withdrawal port, the front end of the lower transmission channel is connected with an inlet end of the deposit and withdrawal port, the front end of the temporary storage transmission channel is connected with an inlet end of the temporary storage portion, the banknote identification portion is installed on the upper transmission channel, and the banknote storage box is connected with the lower transmission channel. The structure is simple, the overall layout of the whole machine is simplified, the effect of flattening and straightening the channels is realized, the effects of reducing banknote stagnation and reducing noise are obvious, and through arrangement of the cyclic transmission channels, the transmission processing time of the banknotes is greatly reduced.
Owner:广州智清电子科技有限公司

Intelligent deep hole rope winch driven by variable frequency motor

The invention discloses an intelligent deep hole rope winch driven by a variable frequency motor. The intelligent deep hole rope winch comprises the variable frequency motor, a winch rack, a roller rack, a hydraulic disk brake, a rope arranging mechanism and a monitoring system. The variable frequency motor and the roller rack are arranged on the left side and the right side of the winch rack respectively; the roller rack is horizontally provided with a winch central shaft which is connected with the roller rack through a bearing, and the inside of the roller rack is provided with a roller which is connected with the radial outside of the winch central shaft; the left end of the winch central shaft extends out of the roller rack and is connected with the driven plate of an electromagnetic clutch through a connection board, the output shaft of the variable frequency motor is connected with the input shaft of a reducer gearbox, and the output shaft of the reducer gearbox is connected with the driving plate of the electromagnetic clutch through a shaft sleeve; the rope arranging mechanism is arranged above the roller rack, and ropes are wound onto the roller through the rope arranging mechanism; the monitoring system comprises a rope length and rope speed sensor, a tension testing mechanism and a monitoring computer. The intelligent deep hole rope winch driven by the variable frequency motor has the advantages of high efficiency, safety, intelligent control, energy saving and environmental protection.
Owner:CHINA GEOLOGICAL EQUIP GRP +1

Impeller type paper money temporary storage mechanism, paper money processing device and automatic teller machine

The invention provides an impeller type paper money temporary storage mechanism, a paper money processing device and an automatic teller machine. Upper and lower belt transmission channels are additionally arranged, so that the matching relation between the conventional paper money channel and an impeller is improved, collision between paper money and the impeller can be reduced, the probability of money sticking and money flying is further lowered, and the accuracy and efficiency of paper money stacking are increased. According to the embodiment of the invention, the impeller type paper money temporary storage mechanism comprises a transmission component, an impeller component, a temporary storage area and a roller component, wherein the transmission component is used for conveying paper money to the impeller component, and comprises an upper belt transmission mechanism and a lower belt transmission mechanism; the upper belt transmission mechanism and the lower belt transmission mechanism construct a transmission channel; the temporary storage area comprises a baffle plate and a temporary storage channel; the baffle plate is connected with the temporary storage channel, is arranged between the temporary storage channel and the impeller component, and is used for intercepting paper money from a transfer channel in the temporary storage channel.
Owner:GRG BAKING EQUIP CO LTD

Hydraulic in-the-hole hammer with dual nozzles and combined valve

A hydraulic in-the-hole hammer with dual nozzles and combined valve for underground drilling and ramming tube is composed of shell with upper nozzle in the center of its upper part, upper valve, impact hammer and its nozzle, and lower jointer. The said upper valve can be freely slide in the shell in a limited range. The said impact hammer can flexibly move up and down and has by-pass water channel on its inner surface.
Owner:EXPLORATION TECH RES INST OF CHINESE ACADEMY OF GEOLOGICAL SCI

Single-gear multi-variable speed snow sweeper with safe manipulating and front assisting wheels and noise reducer body

ActiveCN102704432AOvercoming the disadvantages of secondary air filter intakeEasy to prevent slippingSnow cleaningGear wheelSafety control
The invention relates to a light self-propelled snow sweeper, which comprises an anti-skid chain, a snow-ice tooth brush auger, a heat transfer steam tank and a front exhaust pipe and is a single-gear multi-variable speed snow sweeper with safe manipulating, front assisting wheels and a noise reducer body. A water tank is arranged on a silencer to cool and lead hot steam and hot waste gas to the snow-sweeping front part through a silencing tube so that the ice is removed because of local heating frangibility; variable-speed skidding is majorly improved, and a single gear is changed into a front and rear multi-speed mode so that the coordination of a drive move wheel (26) and a variable slipping poked wheel (27) is multi-bevel gear meshing or comprehensive cooperation between a convex and concave pitted surface and a gear; a die is adopted to cast or inject, so machining is not utilized and low cost is achieved; a safety control handle is also utilized; a front caterpillar band or the front assisting wheel is adopted to assist steering, and the noise reducer body is provided. Burning and cooling, difficult noise reduction, skidding halt, counter weight anti-skidding, waste suction health, secondary gas mixing, heat insulation and shock absorption, deicing function and snow casting function are comprehensively improved, and in other words, a new technical field of cooling, noise reduction, energy conservation and emission reduction of a single-gear variable-speed walk machine is initiated, for example a single-gear variable-speed mower.
Owner:NINGBO DAYE GARDEN EQUIP

Control water valve convenient to replace

The invention provides an easy-to-replace control water valve, which includes a valve seat. Both sides of the top of the valve seat are hinged with a first connecting rod through a rotating shaft. A hollow tube is fixedly installed on one side of the outer surface of the first connecting rod. The inner wall of the hollow tube One side of the valve is fixedly installed with a connecting spring, one end of the connecting spring is fixedly connected with a limit block, one side of the limit block is fixedly installed with a fixed rod, the upper and lower sides of the fixed rod are welded with pull rods, and the two sides of the outer surface of the valve seat Both are fixedly installed with L-shaped rods, and one side of the outer surface of the L-shaped rods is fixedly installed with a concave plate, and one side of the concave plate is clamped with one end of the fixed rod through the opening slot. The easy-to-replace control water valve facilitates the clamping and fixing of the fixed rod and the concave plate on the L-shaped rod by setting the connecting spring, thereby facilitating the disassembly of the support rod and the first connecting rod, making the disassembly method simpler , Only one person can complete the disassembly operation, thus saving the use of manpower.
Owner:JOHNSTON FLOW TECH WUXI CO LTD

Outer clamp type bevelling machine

The invention discloses an outer clamp type bevelling machine, which comprises a power mechanism, a driving transmission gear, left and right movable rings, left and right gear rings and left and right fixed rings, wherein the left and right movable rings are respectively and fixedly arranged on the left and right gear rings, a plurality of eccentric shafts are respectively and fixedly arranged on the left and right fixed rings in the circumferential direction, each eccentric shaft comprises a shaft body and a cylindrical bulge part arranged at one end of the shaft body, the axial line of each shaft body and the axial line of the corresponding cylindrical bulge part are parallel but do not coincide, the shaft body of each eccentric shaft is fixedly arranged on the left and right fixed rings, a rolling wheel bearing is arranged on each cylindrical bulge part, a plurality of rolling wheel bearings are movably embedded in grooves of the inner side surfaces of the left and right gear rings, the driving transmission gear is engaged with the left and right gear rings, the power mechanism drives the driving transmission gear to rotate, a knife rest holder is fixedly arranged on the front end surface of the left movable ring or the right movable ring, and the front end surface of the left movable ring or the right movable ring is fixedly provided with a knife impacting mechanism. The outer clamp type bevelling machine has the advantages that the relative rotation can be realized, good coaxiality is also realized, during the cutting, the operation stability is high, the stable and smooth rotation can be realized, the cutting precision is high, and the risk of gear clamping and gear stubbing is also greatly reduced.
Owner:苏州博合雅工程材料科技有限公司

Improved gasoline double-wheel self-walking snowplough

ActiveCN103628442AOvercoming the disadvantages of secondary air filter intakeEasy to prevent slippingSnow cleaningThermal insulationGasoline
The invention relates to an improved gasoline double-wheel self-walking snowplough. The functions of cooling after burning hot, easily reducing noise, preventing slipping and promoting advancing, solving sliding of a counterweight, preventing absorbed waste from affecting health, solving secondary gas mixing, thermal insulation and damping, deicing and snow throwing are comprehensively achieved. On the basis of reducing temperature, noise and emission and saving energy, an illumination lamp (35) is further arranged on the front portion of the snowplough. End-portion multi-groove teeth (20a2) are formed in a steering operation handle (20a) arranged at the operation end of a steering operation rod (20) to achieve firm grasping; the multi-groove teeth are formed by a plurality of grooves and a plurality of teeth at intervals, wherein the grooves and the teeth are arranged on matched inner circumferences, along the circumference of a hollow pipe, of an insertion part of the hollow pipe at the operation end of the steering operation rod (20); the main handle portion of the improved gasoline double-wheel self-walking snowplough is hollow, protruded and bulked; only the two end portions and an arc-shaped transition handle make direct contact with the insertion part of the hollow pipe to improve operation; a fixed multi-gear variable-speed groove board (31a) and a follow-up variable-speed groove board (31b) act in cooperation with each other to clamp a variable-gear operation rod to eliminate occasional gear engaging failure. The illumination lamp (35) on the front portion of the snowplough is also arranged on the upper portion of an auger (13) on the front portion of the snowplough and comprises a colorized light-emitting diode.
Owner:NINGBO DAYE GARDEN EQUIP

Seal-air automatic switching valve for flue damper door

The invention discloses a seal-air automatic switching valve for a flue damper door, belonging to an auxiliary device of a flue desulphurization device. The seal-air automatic switching valve is characterized in that an air outlet pipe is arranged on a flat plate at the top of a cylindrical switching valve shell of which the cross section is pentagonal, two bottom side surfaces of the cylindrical switching valve shell are respectively provided with a tee joint of an air feeding pipe, an included angle of the two bottom side surfaces is 60 DEG, the air feeding pipe is vertical to each bottom side surface, a connection part between the two bottom side surfaces is of circular arc connection, and a rotary shaft is arranged in the circular arc connection part and is provided with a planar valve plate capable of rotating around a shaft. The seal-air automatic switching valve disclosed by the invention has the beneficial effects that the automatic switching valve replaces two outlet electric valves of seal fans in the prior art so that the pipeline installing workload and auxiliary workload are reduced, the exhaust switch of the two seal fans can be automatically finished through the pressure of seal air, and other additional operations are not needed; and the rotary shaft with the planar valve plate is of a double-safety rotational structure, and the operation reliability of the seal-air automatic switching valve is greatly ensured.
Owner:SHANDONG GUOSHUN CONSTR GRP

Drilling fluid for drilling of fractured igneous rock formation and preparation method of drilling fluid

The invention relates to a drilling fluid for drilling of a fractured igneous rock formation and a preparation method of the drilling fluid in the field of petroleum drilling. The drilling fluid is prepared from components in parts by weight as follows: 1,000 parts of water, 3-4 parts of drilling fluid bentonite, 2-3 parts of sodium carbonate, 2-3 parts of a polymer coating agent, 2-3 parts of potassium polyacrylate or a metal cation polymer, 5-10 parts of an organic amine inhibitor, 20-30 parts of an anti-sloughing reinforced wall fixation agent, 20-30 parts of sulfonated phenol formaldehyderesin, 5-10 parts of a sulfonate copolymer filtrate reducer, 20-30 parts of walchowite, 10-20 parts of an anti-salt and temperature-resistant fluid loss agent, 20-40 parts of superfine calcium carbonate, 50-70 parts of potassium chloride, 0-10 parts of an organic anti-friction compound and 10-20 parts of a nano-micro blocking agent, and the weight is increased to 1.30-1.85 g / cm<3> with a density weighting agent. The drilling fluid has good temperature resistance and lubricating property and excellent inhibition property and anti-sloughing wall fixation property and can effectively prevent thefractured igneous rock formation from collapsing; the rock carrying capability of the drilling fluid can be substantially improved, repeated grinding of larger falling blocks nearby a drill bit is prevented, the frictional resistance is reduced, the mechanical drilling speed is increased, and underground safety is guaranteed.
Owner:CHINA PETROLEUM & CHEM CORP +1

Paper sheet conveying device and automatic cash transaction device

There is provided a paper sheet conveying device of the present invention has: at least three or more conveying paths that are for conveying paper sheets and at each of which at least a partial segment is formed in an arc shape; and at least one or more switching portions for switching the conveying path that conveys the paper sheets, wherein the plural conveying paths are disposed such that two connection positions of each of the arc-shaped segments are connected to the connection position of the arc-shaped segment of a respectively different one of the conveying paths such that outer sides of arcs face one another, and the switching portion switches the conveying path that conveys the paper sheets, at a place of connection of the plural conveying paths.
Owner:OKI ELECTRIC IND CO LTD

Wind tunnel flexible wall linkage control system and method

The invention belongs to the technical field of wind tunnels and discloses a wind tunnel flexible wall linkage control system and a method. The wind tunnel flexible wall linkage control system is provided with a first two-position three-way electromagnetic valve and a second two-position three-way electromagnetic valve; and the two two-position three-way electromagnetic valves are correspondinglyarranged on oil channels of a rod-provided chamber and a rod-free chamber of a No.1 oil cylinder and are both connected between a three-position four-way electromagnetic reversing valve and a one-waythrottling speed regulating valve of each oil way. The wind tunnel flexible wall linkage control system disclosed by the invention solves the debugging problems, eliminates the phenomenon of blocking,improves the running working conditions of the system, also effectively improves the safety and reliability of running of key equipment and simultaneously further improves the functions of the system; a flexible wall is also subjected to follow-up control in a linkage control process; the two types of control are organically combined to meet different requirements under various working conditionsof a wind tunnel test, equipment maintenance and overhauling and the like; and moreover, the design and successful application of a linkage coordination control system play a certain reference significance for future schematic designs under similar working conditions.
Owner:INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT

Beveling machine for cutting pipeline

The invention discloses a beveling machine for cutting a pipeline. The beveling machine comprises a left movable ring, a right movable ring, a left gear ring, a right gear ring, a left fixed ring and a right fixed ring, wherein the left movable ring and the right movable ring are respectively and fixedly arranged on the left gear ring and the right gear ring; the left fixed ring and the right fixed ring are respectively and fixedly provided with a plurality of eccentric shafts along the circumferential direction; each eccentric shaft comprises a shaft body and a cylindrical bulge part arranged at one end of the shaft body, and a roller bearing is arranged on each cylindrical bulge part; the multiple roller bearings are movably embedded into grooves at the inner side surfaces of the left and right gear rings; one end of the left fixed ring and one end of the right fixed ring are respectively provided with a left connecting block and a right connecting block; the left connecting block and the right connecting block are movably connected by virtue of a connecting shaft; one end, which is away from the left connecting block, of the left movable ring and one end, which is away from the right connecting block, of the right movable ring are contacted with butting surfaces of the left fixed ring and the right fixed ring; the other ends of the left and right movable rings are contacted with the other butting surfaces of the left and right fixed rings. The beveling machine has favorable axiality, is high in stability during cutting operation, can rotate stably and smoothly, is high in cutting precision and can be used for conveniently positioning left and right parts.
Owner:苏州博合雅工程材料科技有限公司

Recycled aggregate screening device

The invention relates to a recycled aggregate screening device. The device comprises a rack, a screen drum rotationally connected to the rack, a driving assembly used for driving the screen drum to rotate, a feeding hopper arranged on one side of the rack and used for feeding materials into the screen drum, and a discharging hopper arranged at the lower portion of the screen drum, wherein the rackis rotationally connected with a rotating rod, the rotating axis of the rotating rod is parallel to the screen drum, the rotating rod is provided with a plurality of telescopic rods evenly distributed in the circumferential direction of the rotating rod, rolling balls are arranged at the tail ends of the telescopic rods correspondingly, springs forcing the rolling balls to move in the radial direction away from the rotating rod are arranged in the telescopic rods correspondingly, the screen drum is provided with a plurality of screen holes evenly distributed in the circumferential direction of the screen drum, the outlet ends of the screen holes are provided with first meshing faces allowing the rolling balls to mesh with correspondingly, and when the screen drum rotates, the rotating rodis driven to rotate through meshing of the rolling balls and the first meshing faces of the screen holes. The device has the effect of reducing aggregate blockage.
Owner:福建兴港建工有限公司

Traditional Chinese medicine crushing device

InactiveCN103495460AReduce jammingReduce drive motor overloadGrain treatmentsDrive motorEngineering
The invention discloses a traditional Chinese medicine crushing device. The traditional Chinese medicine crushing device comprises a crushing machine housing, a rack, a driving motor and a movable fluted disc, wherein the movable fluted disc comprises a turntable, a plurality of hammer heads, and hammer head rods with the same number as that of the hammer heads; the movable fluted disc is arranged inside the crushing machine housing; the movable fluted disc is connected with a rotor of the driving motor; one end of each hammer head rod is fixedly connected with the side surface of the turntable, and the other end of each hammer head rod is fixedly connected with each hammer head; a crushing chamber housing is fixedly connected with the rack; the traditional Chinese medicine crushing device also comprises a feed inlet; the feed inlet is formed in the middle of the upper part of the rack; the crushing chamber housing is further provided with a charging hole; the charging hole is formed between the turntable and the feed inlet; the inner wall face of the crushing chamber housing consists of a plurality of cambered surfaces with different curvatures; the distance between each point of the side surface of the turntable from top to bottom and the inner wall of the crushing chamber housing is linearly reduced. The traditional Chinese medicine crushing device provided by the invention is beneficial to uniform stress of the movable fluted disc, and can obtain a good crushing effect at the same time.
Owner:DUJIANGYAN SHENDU TRADITIONAL CHINESE MEDICINE

Gasoline double-walking-wheel self-walking snow sweeper

ActiveCN103741640AOvercoming the disadvantages of secondary air filter intakeEasy to prevent slippingSnow cleaningThermal insulationGasoline
The invention relates to a gasoline double-walking-wheel self-walking snow sweeper. The gasoline double-walking-wheel self-walking snow sweeper comprehensively improves scalding temperature decrease, noise reduction difficulty, slipping immobility, balance-weight slip resistance, waste-adsorption health, secondary gas-mixing, thermal insulation, shock absorption, the deicing function and the snow throwing function, and on the basis of temperature decease, noise reduction, energy consumption and emission reduction, an illuminating lamp (35) is further arranged on the front portion of the snow sweeper. A steering operation handle (20a) arranged at the operation end of a steering operation rod (20) is provided with end multi-groove teeth (20a2) formed by a plurality of grooves and a plurality of teeth, the grooves and the teeth are arranged at intervals and on the hollow tube inserting portion, along the inner circumstance matched with the circumstance of the hollow tube, of the operation end of the steering operation rod (20), and therefore operation is improved. Furthermore, under the combined action of a fixed multi-gear speed change groove plate (31a) and a follow-up speed change groove plate (31b), a gear shifting operation rod is clamped, and therefore an occasional gear fault is eliminated.
Owner:NINGBO DAYE GARDEN EQUIP

Solid-liquid separation method and device for multi-material anaerobic fermentation liquid containing kitchen wastes

The invention discloses a solid-liquid separation method and device for multi-material anaerobic fermentation liquid containing kitchen wastes and belongs to the technical field of kitchen waste treatment. A first discharging hole of a filter press is connected with a feeding hole of an oil-water separation tank by virtue of a pipeline; an overflow port of the oil-water separation tank is connected to a first conditioner by virtue of a pipeline; a submersible sewage pump is arranged in the first conditioner; the discharging hole of the submersible sewage pump is connected with a feeding hole of a multi-disk screw thickener; a second discharging hole of the multi-disk screw thickener is connected to a second conditioner by virtue of a pipeline; the second conditioner is connected with a feeding hole of a plunger pump by virtue of a pipeline; a discharging hole of the plunger pump is connected with a feeding hole of a plate-and-frame filter press; a residue outlet collection bucket of the plate-and-frame filter press is connected with the feeding hole of a residue delivery screw; the discharging hole of the residue delivery screw is connected with a residue box. Aiming at the material characteristics, the problems generated during operation of the original anaerobic fermentation liquid solid-liquid separation equipment with participation of kitchen wastes are gradually solved, the operating stability is improved, the treatment effect is ensured, the operating cost is reduced, secondary pollution is reduced, and the solid residues obtained by solid-liquid separation meet the national standard.
Owner:BMEI +1

Self-actuated piston flow and pressure regulating valve

The invention discloses a self-actuated piston flow and pressure regulating valve. The self-actuated piston flow and pressure regulating valve comprises a self-actuated piston flow and pressure regulating valve body. The self-actuated piston flow and pressure regulating valve is composed of a connecting pipe, a ball valve, an upstream pressure gauge, a downstream pressure gauge, a piston type flow and pressure regulating valve, a guide valve, a needle valve, a throttle valve, a filter valve, an expansion joint, a clutch gearbox and a hydraulic cylinder. According to the self-actuated piston flow and pressure regulating valve, the filter valve can remove large particles to avoid jamming or energy efficiency decrease of the entire system, which is caused by pollutant; the hydraulic cylinder is pushed by pipe liquid pressure to adjust pressure difference without any external power or other energy sources, so that convenience can be greatly improved; the motion direction of a piston is identical to that of fluid, runners can be simple, the cavitation coefficient can be improved significantly, and the anti-cavitation effects in high pressure difference can be significant. Meanwhile, the self-actuated piston flow and pressure regulating valve is reasonable in design, simple in structure and convenient to operate.
Owner:DE VALVE MASCH (JIANGSU) CO LTD

Two-roll cross piercing method for nickel-based high-temperature alloy solid bar billet

The invention discloses a two-roll cross piercing method for a nickel-based high-temperature alloy solid bar billet. The two-roll cross piercing method comprises the following steps: holding an ejector rod of a two-roll cross-rolling piercer by a centering device of the two-roll cross-rolling piercer; setting forward extending amount of an ejector head of the ejector rod to be 5mm-15mm, setting a feed-in angle of the two-roll cross-rolling piercer to be 8-15 degrees, setting a grinding-rolling angle to be 15 degrees, setting a press-down rate to be 7%-17%, and setting rolling roll rotation speed to be 30r / min-40r / min; heating up the nickel-based high-temperature alloy cylindrical bar billet to a temperature of 1010 DEG C - 1050 DEG C; transferring the heated nickel-based high-temperature alloy cylindrical bar billet into a guide slot of the two-roll cross-rolling piercer from a heating furnace; enabling the ejector head of the ejector rod to align to a to-be-pierced position of the nickel-based high-temperature alloy cylindrical bar billet, and enabling the nickel-based high-temperature alloy cylindrical bar billet to pass through the ejector rod under driving of a rolling roll of the two-roll cross-rolling piercer. According to the two-roll cross piercing method disclosed by the invention, the heating temperature, the rolling roll rotation speed, the press-down rate and the forward extending amount of the ejector head are reasonably combined, so that a rolling-blocking phenomenon caused by great alloy deformation resistance is effectively avoided, and manufacturing efficiency of cross piercing of the nickel-based high-temperature alloy cylindrical bar billet is improved.
Owner:安徽汉正轴承科技有限公司

Constant-flow drain valve

The invention discloses a constant-flow drain valve which comprises a water valve cavity, a water valve water inlet connector, a filter screen, a water valve drain connector, a water valve liquid outlet, a valve pipe, a valve column, a plunger valve and a floating ball. The water valve water inlet connector is arranged at the upper end of the water valve cavity, the filter screen is arranged in the water valve water inlet connector, the water valve drain connector is arranged at the lower end of the water valve cavity, the water valve liquid outlet is formed in the water valve drain connector, the valve pipe is arranged on the water valve liquid outlet, the valve column movably penetrates into the center of the valve pipe, the plunger valve is arranged at the top of the valve column, and the floating ball is arranged on the plunger valve. The plunger valve is lifted directly through the buoyancy of the floating ball, the buoyancy of the floating ball and opening of the plunger valve are in direct proportion, opening of the plunger valve, the open area of the valve column and the valve pipe and the drain amount of the valve column and the valve pipe reach a balance point, water can be drained automatically and stably, water outlet flow is constant, the design is simple, jamming is reduced, air leakage is avoided, observation and detection are facilitated, and the constant-flow drain valve can be used for experiment detection, and is simple in structure, convenient to main, low in maintenance cost, high in sealing performance, long in service life, and high in work efficiency.
Owner:DONGGUAN SHANTIAN PRECISION MACHINERY

Continuous preparation method for iron base amorphous strips

The invention belongs to the field of amorphous alloy preparation, and in particular, relates to a method for continuously preparing iron base amorphous strips by using a double-roller process. Firstly, alloy raw materials or primarily prepared mother alloys are smelted in a vacuum induction smelting furnace to obtain iron base amorphous mother alloy melts; and after the temperature control meetsrequirements, argon is injected, a gate valve between the vacuum induction smelting furnace and a tundish is opened, and the melts are introduced in the tundish with high-purity argon protection through a preheating runner. After a flow control plug rod of the tundish is opened, the alloy melts are uniformly distributed by a flow distribution nozzle and injected into roller gaps of casting rollersto cool through water cooling casting rollers to form the amorphous strips; and the amorphous strips are continuously cooled by roller rows and introduced into winding equipment. The whole casting-cooling-winding process is finished in a high-purity argon shielded casting machine cavity. The amorphous forming process is short in flow, high in cooling speed and continuous in preparation process; and the method can efficiently and continuously prepare the iron base amorphous strips, and promotes the application of iron base amorphous alloys.
Owner:NORTHEASTERN UNIV

Anti-sloughing drilling fluid as well as preparation method and application thereof

The invention relates to an anti-sloughing drilling fluid for a fractured carbonate rock stratum and a preparation method and application of the anti-sloughing drilling fluid in the field of petroleum drilling. The anti-sloughing drilling fluid can be prepared from the following components in parts by weight: 1000 parts by weight of water, 15 to 40 parts by weight of drilling fluid bentonite, 5 to 35 parts by weight of a micro-nano blocking agent, 20 to 70 parts by weight of a temperature-sensitive blocking anti-collapse agent, 15 to 30 parts by weight of graphene hydrogel and 0 to 1600 parts by weight of an inert weighting agent. The anti-sloughing drilling fluid disclosed by the invention has high anti-sloughing performance, rheological property, temperature resistance and lubricating property, can effectively reduce the well wall instability risk of a fractured carbonate rock stratum, reduce bit bouncing and blocking and ensure underground safe construction, and has a wide application prospect.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method for continuously preparing copper-based amorphous thin strip

The invention belongs to the field of amorphous alloy preparation, and particularly relates to a method for continuously preparing a copper-based amorphous thin strip through a double-roller method. The method comprises the steps that alloy raw materials or preliminarily-prepared master alloy are molten in a vacuum induction melting furnace to obtain a copper-based amorphous master alloy melt, after temperature control meets requirements, argon is introduced, a gate valve between the vacuum induction melting furnace and a tundish is opened, and the melt is guided into the tundish with high-purity argon shield through a preheating flow pass; after a flow control plug bar of the tundish is opened, the alloy melt is injected into a casting roller gap after being evenly distributed through a distribution nozzle and cooled through a water cooling casting roller to form an amorphous strip, and the amorphous strip is cooled through a row roller and guided into rolling equipment. The whole cast rolling-cooling-rolling process is completed in a casting machine cavity with high-purity argon shield. The amorphous alloy forming process is short, the cooling speed is high, the preparation process is continuous, the copper-based amorphous thin strip can be efficiently and continuously prepared by means of the method, and application and development of amorphous alloy are promoted.
Owner:NORTHEASTERN UNIV LIAONING

Transformer radiator moving type automatic washing cooling device

PendingCN107497744ARestoring Cooling EfficiencyEnsure safetyCleaning using liquidsThermal efficiencyWater tanks
The invention relates to a transformer radiator moving type automatic washing cooling device. The transformer radiator moving type automatic washing cooling device comprises a trolley and a bracket. The bracket is provided with a vertical guiding rail and a horizontal guiding rail. The vertical guiding rail is provided with a transmission belt. The transmission belt is provided with a vertical sliding block. The horizontal guiding rail is arranged on the vertical guiding rail. The horizontal guiding rail is provided with a transmission chain. The transmission chain is provided with a horizontal sliding block. The horizontal sliding block is provided with a spray pipe. One end of the spray pipe is provided with a spray head. The other end of the spray pipe is connected with a high-pressure water pump. The high-pressure water pump is connected with a water box. The trolley is provided with a single-chip microcomputer controller. The transformer radiator moving type automatic washing cooling device has the advantages that a spray head in the spray pipe sprays high-pressure water through the high-pressure water pump, dirt in flakes gaps of a radiator is washed away, the radiator is washed, the radiating efficiency of the radiator is restored, manual work is changed to mechanization, the safety in the hot-line washing operation is ensured, the equipment safety hazard is eliminated, the manpower cost is reduced, the health of workers is ensured, and the working efficiency is improved.
Owner:国网浙江台州市黄岩区供电公司 +2

Static offset rotary steerable drilling tool with sandwich cylinder structure

PendingCN111173452AFriction is not affected by weight-on-bit fluctuationsReduce exposure lengthDrilling rodsDirectional drillingWell drillingControl engineering
The invention discloses a static offset rotary steerable drilling tool with a sandwich cylinder structure. The static offset rotary steerable drilling tool comprises a non-rotary sleeve, a central shaft and a centralizing sleeve, the front part of the non-rotary sleeve is connected to the front part of the central shaft through a focusing centralizing bearing or a centralizing bearing; the rear part of the non-rotary sleeve is connected to the centralizing sleeve through at least one set of centralizing bearing; and a drill bit protruding out of the non-rotary sleeve is fixed to the front endof the central shaft. The limit connection relationship between the central shaft and the non-rotary sleeve is realized by adopting the centralizing sleeve, the length of the non-rotary sleeve exposedon the outside is shortened, so that the possibility of jamming of the rotary steerable drilling tool during the process of run-in-hole or pull-out-of-hole in a high curvature borehole is reduced, and the operational success rate of the rotary steerable drilling tool is increased.
Owner:万晓跃
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