232results about How to "Not blocked" patented technology

The invention discloses ecological slag permeable bricks and a preparation method thereof. Each ecological slag permeable brick comprises a basic strength permeable layer and a perceptive permeable layer which is formed by graded distribution and vibrating extrusion molding and is adhered to the upper surface of the basic strength permeable layer. The preparation method for the ecological slag permeable bricks comprises the following steps of: uniformly stirring 70 to 80 parts of ecological slag, 16 to 20 parts of cement, 2 to 5 parts of siliceous dust, 1 to 3 parts of melamine and 5.6 to 8.0 parts of water to prepare the basic strength permeable layer; and uniformly stirring 17 to 22 parts of cement, 65 to 75 parts of quartz sand, 3 to 4 parts of pigment, 2 to 7 parts of waterborne resin and 3.4 to 6.6 parts of water to prepare the perceptive permeable layer. The ecological slag permeable bricks and the preparation method thereof can overcome the defects of poor soiling resistance, poor water permeability and the like in the prior art, and have the advantages of high pollutant resistance, high water permeability, low cost, high environmental friendliness, and attractive appearance.

The invention provides a solar cell back electric field aluminium paste comprising the following components in percentage by weight based on the total mass of a conductive paste: 70-85% of aluminite powder, 0.2-10% of glass powder and 10-30% of organic carrier. The solar cell back electric field aluminium paste is characterized in that the organic carrier comprises a thickening agent, micro powder wax, tributyl phosphate and an organic solvent; and micro powder wax accounts for 0.5-3.0wt% and tributyl phosphate accounts for 0.2-5wt% by taking the total mass of the organic carrier as a reference. By utilizing the solar cell back electric field aluminium paste and the preparation method thereof, the technical problems of screen leakage and blockage in the screen printing process can be solved. In addition, the photoelectric conversion rate of a crystalline silicon solar cell can be improved.

The present invention relates to the field of building material, in particular the process for making and use of permeable steel slag colored pavement bricks, characterized in that steel slag is used as coarse and fine aggregate to replace sand and gravel, wherein the raw materials of the colored pavement bricks are added with 60%-80% of steel slag with grain size being 0-20mm apart from the No. 425 common silicate cement. In the forming process of the steel slag colored pavement bricks, the die roof board is provided with 5-15 inverted polygons or cones, thus forming a series of inverted taper holes on the opposite sides of the pavement bricks during vibration molding.

The invention provides a system and a process for desalting recycle-water of iron and steel combined sewage by a bi-membrane method, which belong to the technical field of treatment and recycling of sewage. The system comprises a cooling tower, a raw water tank, a micro-flocculation filter device, a flow by-pass activated carbon filter kettle, a laminated filter, an ultrafiltration system, an ultrafilter, a reverse osmosis system, and a reverse osmosis desalination water tank. The system and the process are used for solving the problem of desalination of the recycle-water of sewage by the bi-membrane method for steel enterprises. In the system and the process, the pretreated water is treated through the ultrafiltration device by bi-membrane desalination to meet the requirement that SDI is less than or equal to 3, and the water is subjected to desalinating treatment through the reverse osmosis device. The system and the process treat the recycle-water of the iron and steel combined sewage by a mode combining preoxidation, micro-flocculation filtration, flow by-pass activated carbon filtration and self-cleaning filtration, thereby greatly improving the operating stability and the service life of the bi-membrane desalination system, effectively realizing sewage reclamation and 'zero drainage' of the sewage, and having important practical value on the desalination of the recycle-water of the iron and steel combined sewage.

The invention discloses a flushing device for a mechanical seal of a centrifugal pump, and belongs to the technical field of centrifugal pumps. The flushing device comprises a flushing pipe connected to the centrifugal pump; the liquid feeding end of the flushing pipe is connected with the outlet end of the centrifugal pump; the liquid discharging end of the flushing pipe is connected with the mechanical seal of the centrifugal pump; the flushing device is characterized in that the flushing pipe is connected with a tubular filter, a pressure gauge and a throttling orifice plate; the tubular filter is close to the outlet end of the centrifugal pump; the throttling orifice plate is close to the mechanical seal of the centrifugal pump; a first stop valve and a second stop valve are arranged on the flushing pipe; the first stop valve is positioned between the outlet end of the centrifugal pump and the tubular filter; and the second stop valve is positioned between the pressure gauge and the throttling orifice plate. The flushing device can both achieve a good cooling effect on the mechanical seal and prevent particle impurities from being deposited on the sealing surfaces of movable and fixed rings, thus effectively protecting the sealing surfaces of the movable and fixed rings, relieving wear and enhancing the sealing effect; and therefore, normal and stable operation of the centrifugal pump is guaranteed.

The invention discloses a printing and dyeing wastewater treatment process without sludge. The process comprises the following steps: feeding printing and dyeing wastewater into grids for filtration; regulating a PH value of the printing and dyeing wastewater with a regulating pool; decoloring the printing and dyeing wastewater in a decoloring pool and performing a flocculation reaction; electrolyzing the printing and dyeing wastewater by using a high-frequency pulse generator; performing hydrolysis and acidification reactions on activated sludge and the printing and dyeing wastewater; discharging the printing and dyeing wastewater into an aerobic pool and metabolizing with oxygen; feeding the printing and dyeing wastewater into a precipitation pool; completely feeding the generated sludge back into an anaerobic hydrolysis acidification pool; filtering the sludge in a sand filtering pool and then flowing into an oxidation pool. The treatment process is simple, compact in procedures as well as simple and convenient to operate. After the printing and dyeing wastewater is precipitated one time, the removal rate of COD can reach above 70%, and the removal rate of BOD can reach about 40%, so that the treated water is high in quality and can meet the requirement of recycling water for production. If the water is deeply treated further, the water can be recycled without sludge discharging. In addition, the excessive increasing of the sludge in an anaerobic biochemical pool is not found. The treatment process does not require multiple precipitations and is less in procedures, thereby greatly saving the cost and improving the efficiency.

The invention discloses a pulverized coal separator which is characterized in that a shell is an oblique cone, an upper cover is arranged on the top of the shell, and a discharge hole is arranged at the bottom of the shell; the upper cover is provided with a feeding hole, an air outlet and a machine seat; a comb filter device consists of a rotating bracket and filter screen plates; the plurality of filter screen plates are arranged on the rotating bracket in an inclined way in a shape of a fan blade; a driving device is fixed on the machine seat; and a rotating shaft of the rotating bracket is connected with an output shaft of the driving device. Compared with the prior art, the pulverized coal separator is simple in structure, low in manufacturing cost, strong in screening capability, hard in blockage of a screen, and can be especially used for trapping short fiber and flocked fiber in pulverized coal, so that the separation efficiency is further improved, and the service life is further prolonged.

The invention relates to an anti-disassembly, anti-reversion, anti-pulsation, antirust and antidrip energy-saving water meter belonging to a measuring instrument for preventing the running water from running away and from being stolen. A pipe connector protective sleeve sleeved on a nut for an inlet pipe connector of the water meter is buckled with a protective sleeve retaining ring to enable meter casings to be connected into a whole, a meter cover protective sleeve is buckled on a meter cover and is used for buckling and hooking the meter cover through an interlocking hook, and a positioning pin is inserted on the meter cover and connected into a whole with the meter casings so as to prevent the water meter from being disassembled and prevent the meter cover from dripping water; an anti-reversion and anti-pulsation structure formed by a check valve is arranged in an inlet of the water meter so as to avoid reversion and pulsation; the transmission between an impeller and a counting device is carried out through an ultra-thin gear transmission shaft and a lip-shaped sealing ring, and an antirust structure for a meter panel can prevent the water from entering in the counting device to cause the meter panel to rust; and symmetrical microflow holes, a recharging hole and a dead weight valve on an impeller case of the water meter and a flow regulation valve on a valve plate form an antidrip structure to avoid a dead angle to affect the accuracy in the rotating process of the impeller and water from dripping, therefore, the invention integrates the five precaution functions into a whole and plays the roles of fair water supply and water saving.

The invention discloses an automatic sampling system for logging rock waste. The system comprises a control system and a sampling pump used for extracting drilling mud containing stratum rock waste. The sampling pump is connected with a power device used for separating rock waste from mud. The power device is connected with a rock waste cleaning device. A mud collection box is arranged below the power device. The sampling pump, the power device and the rock waste cleaning device are connected with the control system. According to the system, stratum rock waste can be automatically gained, separation and cleaning of rock waste and mud are automatically achieved, representative rock waste is rapidly and continuously obtained, logging sand gaining time is shortened, the labor cost of logging operation is saved, the rock waste logging data quality and rock waste collection precision are improved to the largest degree, the rock waste section coincidence rate is improved, influences of manual operation are reduced, the work intensity of logging data collection staff is lowered, and working efficiency and accuracy are improved; the number of logging on-site operation staff is reduced, the employment risk and the labor intensity are lowered, and high automation of logging work is achieved.

The invention discloses an ore pulp non-pressure pipeline sampler, which comprises a main box body, an execution mechanism, a sampling pipe and a sampling pipe sheath, wherein the sampling pipe and the sampling pipe sheath are arranged on the upper part of the main box body and are connected with the output end of the execution mechanism; an upper washing flange, a control valve, a lower washing flange and a sample discharging pipe are arranged on the lower part of the main box body; the sampling pipe has two positions at which the sampling pipe is in the main box body and in the sampling pipe sheath respectively, and is in contact with flowing ore pulp only during sampling; the upper and lower washing flanges can wash the sampling pipe and the sample discharging pipe respectively so as to effectively avoid the ore pulp abrading the sampling pipe and prevent impurities in the ore pulp from jamming the sampling pipe. The ore pulp non-pressure pipeline sampler has high stability and reliability.

The invention discloses a waste diatomite processing system and a waste diatomite processing technique. The waste diatomite processing system comprises a diatomite temporary storage device and dewatering equipment, wherein a feeding pump is arranged on a pipeline system between the diatomite temporary storage device and the dewatering equipment, a discharge hole and a liquid outlet are formed on the dewatering equipment, the liquid outlet is connected with a sewage pipe network, the discharge hole of the dewatering equipment is connected with drying equipment by a belt conveyer, a wet gas outlet of the drying equipment is connected with a dust collection device, the discharge hole of the drying equipment is connected with packaging equipment by a screw conveyer, and the packaging equipment is provided with a finished product conveying device. The waste diatomite processing technique sequentially comprises the steps of conveying, storing temporarily, dewatering, drying, packaging and the like. According to the waste diatomite processing system and the waste diatomite processing technique, the investment is low, the energy consumption is low, the effect is rapid, the pollution problem of waste diatomite is solved and waste reutilization can be realized.

The invention relates to a special material regulating angle valve for a high-pressure hydrogenation reaction. A valve seat is fixed on a valve body, a valve rod is spliced in the valve body in a sealing and sliding manner, a valve core is in integrated connection with the bottom end part of the valve rod, an auxiliary guide seat is mounted between the valve body and the valve seat, an anti-erosion sleeve is mounted on the auxiliary guide seat, one end of the anti-erosion sleeve is embedded into the auxiliary guide seat, the other end of the anti-erosion sleeve is embedded into the valve body, and the valve rod is spliced in the anti-erosion sleeve in a sliding manner. With the adoption of the special material regulating angle valve, the accumulation of a medium on an inner wall is prevented, the erosion of the high speed medium to internal pieces of the valve is reduced, the valve rod is not blocked by the granular medium, the service life of the valve rod is prolonged, and the stability and reliability of the auxiliary guide seat are ensured.

Provided are an oil and gas well exploiting sewage efficient cavitation processing device and method. The device comprises a cavitation chamber, a settling chamber, an atomization reactor and fans. A first fan is arranged at a first air inlet end of the cavitation chamber. The other end of the cavitation chamber is an air outlet and is communicated with the settling chamber. A second air inlet end of the cavitation chamber is provided with a second fan. The atomization reactor is arranged below the second fan and comprises a cylindrical shell body, a motor, a sewage distribution disc and an atomization rotating disc. The motor is placed in the cylindrical shell body. The sewage distribution disc and the atomization rotating disc are arranged below the motor in sequence. The atomization rotating disc is connected with a motor shaft. A plurality of atomization holes are formed in the concave cavity periphery wall of the atomization rotating disc. A sewage conveying pipe extends into the cylindrical shell body and provides water for the sewage distribution disc. Sewage is sprinkled on the high-speed rotating atomization rotating disc from a plurality of water distribution through holes of the sewage distribution disc and is crushed to form atomization air bubbles to be dispersed in the cavitation chamber. The atomization air bubbles collide with each other at high speed under turbulence powerful wind power in different directions, decomposing, expanding, bursting, cavitation evaporating and carried out, and contaminants are separated through extraction.

The invention relates to an electric ice raking machine. The upper ends of a pair of vertical tracks which are oppositely arranged are respectively fixedly provided with a hydraulic cylinder, the front end of a piston rod of each hydraulic cylinder is downward and is connected with a pull rod arranged in a corresponding track, the lower end of the pull rod is connected with a supporting seat, the two ends of a roller arranged between the tracks are supported by the supporting seat and are in a running fit, the outside of the roller is provided with more than two groups of rake teeth, a revolving shaft of a motor in the roller is connected with the input shaft of a reducer, and the output shaft of the reducer is connected with one end of the roller. The electric ice raking machine is arranged at a lock chamber at the two sides of a gate in a riverway fork, when an ice discharging brake at the rear side of the gate is closed and multiple floating ices are collected on water surface in the lock chamber, the hydraulic cylinder drives the roller to move onto the water surface, the motor is started, the rake teeth on the rotating roller can crush the floating ices in the lock chamber and push the floating ices to the ice discharging brake, and the collected floating ices can cross the ice discharging brake and fall to downstream under the driving of the rake teeth along with continuous rotation of the roller.

A carrier roller spraying system comprises a carrier roller spraying rack and a carrier roller support spraying rack. The carrier roller spraying rack comprises a carrier roller hanging bracket (1), a first suspension pedestal (2), a second suspension pedestal (3), brackets (4) which are connected with the first suspension pedestal (2) or the second suspension pedestal (3), carrier roller suspenders (5) which are detachably connected with the corresponding brackets (4), first end caps (6) which are in sliding connection with the corresponding carrier roller suspenders (5), second end caps (7) which are detachably connected with the corresponding carrier roller suspenders (5) and bolts (8), wherein the first suspension pedestal (2) and the second suspension pedestal (3) are connected with the two sides of the carrier roller hanging bracket (1). The carrier roller support spraying rack comprises an upper rack frame (13), a lower rack frame (14), a plurality of sets of upper rack mechanisms (16) and a plurality of sets of lower rack mechanisms (17), wherein the two ends of each upper rack mechanism (16) are connected with the upper rack frame (13) and one end of a carrier roller support (15) correspondingly, and the two ends of each lower rack mechanism (17) are connected with the lower rack frame (14) and the other end of the carrier roller support (15) correspondingly.

An artery puncture needle comprises a light-transmission cannula seat, a remaining needle outer cannula, a steel needle seat and a steel needle. A tubular pressure measuring joint is arranged at the rear end of the light-transmission cannula seat, the remaining needle outer cannula is opposite to the pressure measuring joint and arranged at the front end of the cannula seat, the steel needle is disposed on the steel needle seat, a holding groove which is respectively communicated with the remaining needle outer cannula and the pressure measuring joint is formed in the cannula seat, an elastic stop block which can be operated to slide between a puncture position and a pressure measuring position is movably assembled in the holding groove, a pressure measuring channel which runs through transversely is formed on the stop block, and a blood draining hole which is communicated with the holding groove is formed on the cannula seat. The artery puncture needle has the advantages that the artery puncture needle is simple in structure, convenient in operation, capable of preventing blood from spraying outwards, high in puncture success rate, accurate in pressure measurement, convenient in blood collection, and the like.

The invention discloses a super capacitor. The thickness of an anode pole piece and the thickness of a cathode pole piece are different, the thickness range of the anode pole piece is 180 micrometers to 280 micrometers, and the thickness range of the cathode pole piece is 160 micrometers to 260 micrometers. The manufacturing process of the super capacitor comprises the steps: (1) material preparation, (2) the preparation of an electrode on a coating device, (3) electrode rolling, (4) the formation of pole pieces, (5) the formation of an electric core, (6) the connection of a leading-out terminal, (7) the vacuum drying of the electrical core, (8) vacuum liquid injection, and (9) safety explosion-proof. After the above structure and manufacturing process are adopted, the volume of the anode pole piece is larger than the volume of the cathode pole piece, the active space of an ion is greatly raised, the factors of electrode corrosion are reduced, the condition that a diaphragm hole is not blocked by an attachment is ensured, and the stability and the service life of the product are raised.

The invention discloses a bacteria and algae collaborated method for efficient treatment of aquaculture sewage. Bacteria and algae are compounded for use in combination to treat livestock and poultrysewage. The method specifically includes: adopting autotrophic ammonia oxidizing bacteria, autotrophic nitrification bacteria and heterotrophic nitrification bacteria to convert ammonia nitrogen in livestock and poultry sewage into nitrate nitrogen, then introducing the treated sewage into an airlift columnar photobioreactor, and utilizing the microalgae with a preservation number of CCTCC NO:M 2017461 to remove nitrogen and phosphorus and perform biomass accumulation. The method has the beneficial effects that: through the synergistic action of microbial functional bacteria and microalgae, the method rapidly reduces the nitrogen, phosphorus and other pollutants in livestock and poultry sewage, shortens the hydraulic retention time, improves the microalgae biomass accumulation speed, and can acquire a large number of renewable energy sources while treating livestock and poultry sewage.

The invention relates to synchronous grouting slurry for shield driving construction of a water-enriched sandy gravel stratum, which is used for synchronously grouting the stratum by using an earth pressure balance shield for the water-enriched sandy gravel stratum. The grouting slurry is prepared from the following components in percentage by weight: 8-8.8% of cement, 42-43% of river sands, 0.1-0.2% of polycarboxylate high performance water reducer, 4.5-4.7% of bentonite, 1.4-1.6% of yellow clay powder, 23-24% of coal ash and 19-20% of water. According to the slurry provided by the invention, by adding the polycarboxylate high performance water reducer, the use level of water in the equal flow condition is reduced, the use level of cement can be reduced under same strength by virtue of double effects of hydrophilicity and hydrophobicity of the polycarboxylate high performance water reducer, so that the initial setting time of the slurry is accelerated and the problem that the synchronous grouting slurry is separated within a short time is solved. The peaceability, the mobility and the set strength of the synchronous grouting slurry can be improved.

The invention relates to a recycling water treatment device for bast fibers and a using method thereof. The device is characterized in that: the device comprises a box body; a filter cartridge is arranged on the upper part of the box body; at least one layer of filter screen which is provided with holes is arranged on the circumferential surface of the filter cartridge.; one end of the filter cartridge is fixedly connected with a rotating shaft driven by a motor, and the other end of the filter cartridge is fixedly connected with a hollow shaft; a suction pipe is inserted into the hollow shaft; one end of the suction pipe is positioned on the lower part of a cavity of the filter cartridge, and the other end of the suction pipe is connected with a water pump; a brush roll, of which the brush of kernel is contacted with the filter cartridge, is arranged on the upper part of one side of the filter cartridge; an inclined plate is arranged under the brush roll; and a sundries barrel is arranged under the inclined plate. The device has the advantages of smart structural design, convenient operation, low cost, high efficiency, and obvious energy conservation and emission reduction effects, and can be widely applied to the water cycle treatment process in the process of processing the bast fibers.

The invention provides a gas-liquid coalescence filter element and application and a filtering device containing the gas-liquid coalescence filter element. The filter element comprises a pre-separation layer, a coalescence layer and a liquid discharging layer which are sequentially arranged in the airflow direction. The pore diameter of the pre-separation layer is 8-12 [mu] m, the thickness of thepre-separation layer is 1-2 mm, the pre-separation layer is formed by profiled fibers and the whole pre-separation layer has hydrophobicity and lipophobicity. The pore diameter of the coalescence layer is 3-8 [mu] m, the thickness of the coalescence layer is 0.4-0.6 mm, the coalescence layer is formed by profiled fibers and the coalescence layer is divided into a hydrophobic and oleophobic area and a hydrophilic and oleophylic area which are arranged at intervals in the circumferential direction. The pore diameter of the liquid discharging layer is 10-20 [mu] m, the thickness of the liquid discharging layer is 2-3 mm, the liquid discharging layer is formed by profiled fibers, the air inlet side is a hydrophilic and oleophylic area, and the air outlet side is a hydrophobic and oleophobic area. The filter element can be used for filtering a gas-liquid mixture. The filtering device containing the filter element can remarkably reduce the filtering pressure drop while improving the filtering efficiency.

The invention relates to a dust-removing machine for a paint spraying room. The dust-removing machine for the paint spraying room mainly comprises an air intake and exhaust device and a dust filtering device, wherein a first cleaning wheel shaft is arranged at the position of an included angle between the outer wall of a lower roller shaft and the inner wall of a filter screen rotating downwards; the first cleaning wheel shaft is contacted with the outer wall of the lower roller shaft and the filter screen respectively; a second cleaning wheel shaft is arranged the position of an included angle between the outer wall of an upper roller shaft and the inner wall of a filter screen rotating upwards; the second cleaning wheel shaft is contacted with the outer wall of the upper roller shaft and the filter screen respectively; and the first cleaning wheel shaft and the second cleaning wheel shaft are driven by a power device to rotate. A brush on the first cleaning wheel shaft can clean dust on the filter screen and dust on the surface of the lower roller shaft timely and the second cleaning wheel shaft can clean dust on the filter screen and dust on the surface of the upper roller shaft timely, so that the filter screen is not polluted by the lower roller shaft and meshes of the filter screen are not blocked by the dust.

The invention discloses a novel device for closure of a small pump station. The novel device overcomes the defects that in the prior art, faults are prone to occurring in moving of a check valve element, and effects are poor. The device which is used on the small pump station to replace an existing check valve is provided. The novel device is better in sealing and checking effect and comprises a valve body. A funnel-shaped valve seat is arranged on the lower portion of the valve body. The middle of the valve body is of a cylindrical structure. A ball-shaped valve element is arranged in the cylindrical structure. The valve seat can be matched with the valve element in a sealed mode. The lower face of the valve seat is connected with an inlet connecting end. An outlet connecting end is arranged on the side edge of the middle of the valve body. The upper portion of the valve body is connected with a valve deck. The novel device has the beneficial effects that self tightening is achieved, smoothness of a draining pipeline is ensured, the valve element is automatically centered, and lifting, opening and closing are accurate and stable.

The invention discloses a hydraulic ice raker; a pair of vertical tracks are oppositely arranged; the upper end of each track is provided with a hydraulic cylinder; the front end of a piston rod of the hydraulic cylinder faces downwards; the front end of the piston rod of each hydraulic cylinder is connected with the upper end of a pull rod in the corresponding track; the lower end of each pull rod is connected with a hydraulic motor; two ends of a rotary drum arranged between one pair of tracks are connected with a rotation shaft of the hydraulic motor; and more than two groups of rake pawls are arranged at the outer side of the rotary drum. The hydraulic ice raker is arranged at lock chambers at two sides of a gate in riverway fork; when an ice discharging brake at the rear side of the gate is closed and more floating ice accumulates on the water surface, the hydraulic cylinder drives the rotary drum to move to the water surface, the motor is started, the rake pawls on the rotating rotary drum can crush the floating ice in the lock chamber and push the floating ice to the ice discharging brake, and the accumulated floating ice can cross the ice discharging brake under the pushing of the rake pawls along with the continuous rotation of the rotary drum so as to fall to the downstream.

The invention belongs to the technical field of drainage system equipment, and specifically relates to a reverse downstream waterpower automatic gate. The reverse downstream waterpower automatic gate comprises a buffering pool arranged inside a flow passage, a pondage regulating pool arranged at the downstream of the buffering pool, and a gate arranged between the buffering pool and the pondage regulating pool. The edges on bilateral sides of the gate and the edge at the bottom of the gate are respectively in hermetic fit with flow passage walls on bilateral sides of the flow passage. The gate is fixed on one side of a spindle. Two ends of the spindle are respectively hinged with the flow passage walls on bilateral sides of the flow passage. The reverse downstream waterpower automatic gate further comprises a floating chamber arranged inside the flow passage. The top of a lateral wall of the floating chamber facing to one side of the pondage regulating pool is provided with a water inlet communicated with the pondage regulating pool. The other side of the spindle is fixedly connected with a floating box which is arranged inside the floating chamber. The bottom of a lateral wall of the floating chamber is provided with a water outlet which is communicated with the flow passage. The gate can be opened with the help of the gravity of the floating box, without an external power or a control measure, thereby allowing the water in the buffering pool to be drained when the water level of the underground pondage regulating pool is low, accordingly achieving the flood discharge timely, and closing the gate when the water level is high.

The invention relates to a water delivery regulation device of a combined type jet flow fish pump. The water delivery regulation device comprises a water delivery regulation box group which respectively comprises a drainage box and a flow stabilization box, wherein the drainage box is of a cuboid strip shape and is sleeved outside a drainage taper pipe, water-stop sheets are arranged in the drainage box along the central axis of the drainage taper pipe to form at least two water separation cavities, drainage holes are respectively formed on the interiors of the water separation cavities in the way of corresponding to the wall of the drainage taper pipe, and overflow holes are respectively formed in the lower parts of the front walls of the water separation cavities; a water discharge hole is formed on the lower part of the flow stabilization box and is connected with the water suction hole of a water pump, and the outlet water of the water pump is connected with the water spray cavity of a jet device; the suction port of the jet device is communicated with the small end of the drainage taper pipe; and the a flow regulation plate which can move up and down is also arranged on the front wall of the drainage box and can partially block the overflow holes. The water delivery regulation device is simple in structure, under the condition of not adding any power, the sucked fish water amount can be increased by times, and the ratio of fishes to water is increased; and moreover, the flow of the water pump can be regulated to prevent the taper pipe from being blocked.

The invention discloses a filtering, blowing and sweeping control device for a waste emulsion treatment system. An emulsion filter is blown and swept by steam in a pulverized coal boiler, a blowing and sweeping device comprises a control box and a heat tracing system, an emulsion differential pressure detection branch and a steam blowing and sweeping branch are arranged in the control box, a controller is arranged in the control box and comprises a processor, a memorizer and procedures, the procedures are stored in the memorizer and can execute actions of blowing and sweeping switches of the emulsion differential pressure detection branch and the steam blowing and sweeping branch on the processor, and the heat tracing system comprises a plurality of heaters wound by copper pipes. The blowing and sweeping control device can blow and sweep the filter, pipelines and valves in the pipelines in the emulsion treatment system, so that the filter and even the whole emulsion treatment system cannot be blocked, cleaner emulsion is provided for the emulsion treatment system, so that the emulsion can be effectively combusted and utilized, and environmental protection effects can further be optimized.

The invention relates to a wireless secure transmission method based on a random frequency array and an intelligent reflecting surface, and provides a multi-user system which comprises a transmitting end antenna, an intelligent reflecting surface controller and an intelligent reflecting surface which are connected in sequence, and specifically comprises the following steps: constructing a multi-user system model, selecting the maximum signal to leakage and noise ratio weighted sum of all expected users in the system as a target function of the system; by combining a corresponding convex optimization theory and applying an idea of alternate iterative optimization, a corresponding active beamforming vector and a passive beamforming matrix are obtained, i.e., a reflection matrix of the intelligent reflecting surface is obtained. Based on the random frequency array and the intelligent reflecting surface, safe transmission of a multi-user system can be achieved, and it is guaranteed that a private signal reaches the safety performance of an expected user and is not intercepted by an eavesdropping user.

The invention relates to a high-temperature coke oven raw coke oven gas pipeline cleaning device adopting compressed nitrogen injection, which comprises a pulse valve, a gas bag, a pulse injection connecting pipeline, a pipeline nozzle and a pulse injection PLC control system, wherein one end of the pulse valve is connected with the pulse injection PLC control system; the other end of the pulse valve is connected with the gas bag; and the gas bag is connected with the pipeline nozzle through the pulse injection connecting pipeline. The device has the benefits that injection medium adopts compressed nitrogen, the compressed nitrogen in the gas bag is instantaneously injected into a cleaned high-temperature raw coke oven gas pipeline, injection gas stream filling a whole pipeline section is formed in the high-temperature raw coke oven gas pipeline, the pulse injection PLC control system can set the injection sequence and the injection time according to production practice, the cleaning of the pipeline is effectively maintained, and the pipeline is prevented from being blocked.

The invention which belongs to fluid measuring technical field, is concretely a method and device of measuring multi-phase fluid pressure. Its basic idea a strand single phase fluid(gas) is shot into fluid to be measured, whose pressure and flux are measured, then pressure of the fluid to be measured is acquired according to relationship of flux and pressure of liquid which is shot and pressure of the fluid to be successively connected and installed on pipeline of the fluid to be measured, it is also called gas sensor because of single phase gas used for delivering pressure, solving wear and blockage problem in surface - contact measurement and sensor needn't to have resistance to high and corrosion in measurement of high temperature medium or strong corrosive medium.