46results about How to "Ease of internal maintenance" patented technology

The invention discloses a back-flushing pump of a circulating water filtering system for a nuclear power station, which is a vertical single-stage single-suction centrifugal pump. The back-flushing pump comprises a stator assembly, a rotor assembly, a bearing assembly, a shaft seal assembly and a motor. The stator assembly comprises a pump body, a pump cover, a bearing bracket and a motor frame; the rotor assembly comprises an impeller, a pump shaft connected with the impeller through an impeller nut and a shaft sleeve sleeved at an upper middle part of the pump shaft; the pump body adopts a radial split type double-volute structure; the bearing bracket comprises an intermediate bracket and a bearing body; the outer edge of the pump cover is clamped between the upper end of the inner edge of the pump body and the lower end of the inner edge of the intermediate bracket; the bearing assembly comprises a pair of angular contact ball bearings installed in a cavity of the bearing body in a back-to-back mode and sleeved at the upper middle part of the pump shaft, a set of guide bearings arranged between the lower part of the pump shaft and the inner edge of the pump cover and an upper bearing cover; and the shaft sealing assembly comprises a pump body seal installed at the upper end of the pump cover and a bearing oil seal which is installed in the cavity of the bearing body and arranged at the lower ends of the angular contact ball bearings.

The invention belongs to the field of network maintenance equipment, and particularly relates to a switch reducing dust entrance. The switch is characterized in that a casing is provided with a radiating port, and a rubber ring is inserted into the radiating port; a mesh is fixed to the middle of the rubber ring; an air quantity adjusting plate is fixed to a connecting rod, and the air quantity adjusting plate is disposed at one side of the radiating port; a knob is arranged above the outside of the casing; the upper end of the connecting rod passes through the casing to be connected with the knob, and the lower end of the connecting rod is connected with a connecting rod rotating shaft; a PCB is mounted in the middle of the casing; a first radiating fin is mounted at the lower side of the PCB, and a first heat conductive paste layer is applied between the first radiating fin and the PCB; and a second radiating fin is mounted outside the casing, and a second heat conductive paste layer is applied between the second radiating fin and the casing. The invention provides a switch reducing dust entrance.

The invention discloses a downhole cooling air-cooling dehumidifier, and relates to a heat exchange device for a fixed tubular path assembly of two heat exchange media, in particular to heat exchange equipment which arranges one path in the other path. A heat exchanger comprises a case, heat exchange tube units, a header tube, an inlet tube and an outlet tube. The heat exchanger is characterized in that the heat exchange tube units sequentially comprise an inner tube, an outer tube and a fin from inside to outside, wherein, a long bracing strip is arranged between the inner tube and the outer tube, an air path is arranged outside the outer tube and in the inner tube, and a liquid flow channel is arranged between the inner tube and the outer tube; each heat exchange tube unit is arranged in a rectangular array, the heat exchange tube units and the horizontal header tube vertically intersect, and the inner tube extends out of the header tube; the header tube is communicated with the heat exchange tube liquid flow channel, is mutually vertical to the inlet tube and the outlet tube and is connected with the inlet tube and the outlet tube by a connecting tube; and each row of the heat exchange tube units is provided with a support frame. The heat exchanger has large heat exchange area and high heat exchange efficiency and is easy to clean dust and overhaul an inner part.

The invention discloses a double-shell heat exchanger, belonging to a heat exchanging device, and is particular suitable for a heat exchanger two sides of which are participated in heat transfer and have greater medium temperature differences; the double-shell heat exchanger is characterized in that an outer shell is internally provided with an inner shell, wherein the outer shell is composed of a refrigerant inlet outer layer variable diameter head, a rectangular outer box body, a heating medium inlet variable diameter head, a heating medium outlet variable diameter head and a refrigerant outlet outer layer variable diameter head; the inner shell is composed of a refrigerant inlet inner layer variable diameter head, a rectangular inner box body and a refrigerant outlet inner layer variable diameter head; the outer shell is fixedly connected with one end of the inner shell; the other end of the inner shell is connected through a stuffing box seal device; the inner box body is internally provided with a heat exchanging element; the surface of the inner box body facing the inlets and outlets of the refrigerant and the heating medium is not provided with a box wall; the width of the inner box body is approximate with the width of the outer box body; and two ends of the bottom surface of the inner box body are provided with a short-circuit-proof supporting plate. By the heat exchanger, the phenomenon of leakage of the heat exchanger caused by the deformation of a seal component or cracking of welding because of temperature difference stress can be prevented when the temperature difference of the refrigerant and the heating medium is great, and the scope of application of the heat exchanger is improved.

The invention discloses a magnetic material separating device for industrial waste liquid. The magnetic material separating device comprises a bottom supporting base plate and a main hollow tubular body, wherein a driving motor mounting shell is fixed to the center of the upper surface of the bottom supporting base plate through a bolt. According to the magnetic material separating device, a centrifugal force is generated on the premise that the liquid is in rapid vortex flow type rotation, so that magnetic materials of a liquid mixture accompanied with magnetic material impurities can be thoroughly adsorbed to the internal surface of the main hollow tubular body under the action of the centrifugal force, and the purification rate is high; moreover, the device is provided with a balance-supporting ball rotating type stabilizing mechanism, and thus, the main hollow tubular body can stably work on a flat surface in a rolling ball manner; in addition, the device is provided with a sealedtype liquid overflow preventing injection mechanism, the sealed type liquid overflow preventing injection mechanism can be opened to facilitate internal repairing and meanwhile can play a role in preventing the liquid from overflowing; and furthermore, the device is provided with a liquid centralized storage mechanism, so that centralized storage can be achieved on the premise of not affecting rotation, and drainage is facilitated.

The invention discloses a double-shell heat exchanger, belonging to a heat exchanging device, and is particular suitable for a heat exchanger two sides of which are participated in heat transfer and have greater medium temperature differences; the double-shell heat exchanger is characterized in that an outer shell is internally provided with an inner shell, wherein the outer shell is composed of a refrigerant inlet outer layer variable diameter head, a rectangular outer box body, a heating medium inlet variable diameter head, a heating medium outlet variable diameter head and a refrigerant outlet outer layer variable diameter head; the inner shell is composed of a refrigerant inlet inner layer variable diameter head, a rectangular inner box body and a refrigerant outlet inner layer variable diameter head; the outer shell is fixedly connected with one end of the inner shell; the other end of the inner shell is connected through a stuffing box seal device; the inner box body is internally provided with a heat exchanging element; the surface of the inner box body facing the inlets and outlets of the refrigerant and the heating medium is not provided with a box wall; the width of the inner box body is approximate with the width of the outer box body; and two ends of the bottom surface of the inner box body are provided with a short-circuit-proof supporting plate. By the heat exchanger, the phenomenon of leakage of the heat exchanger caused by the deformation of a seal component or cracking of welding because of temperature difference stress can be prevented when the temperature difference of the refrigerant and the heating medium is great, and the scope of application of the heat exchanger is improved.

The invention discloses a novel LED lamp. The novel LED lamp comprises solar panels, LED lamp bodies, a supporting rod, a sleeve, a cover plate, heat dissipation holes, a base plate, a top plate, an observation window, a transmission box body, a switch, a rib plate, rolling wheels, a threaded rod, a rotating shaft, a storage battery, a gasket, a threaded hole, a check ring, a speed reducer and a servo motor. The rolling wheels are installed on the four corners of the bottom of the base plate. The heat dissipation holes are formed in the outer side of the transmission box body, the servo motoris installed inside the transmission box body and corresponds to the heat dissipation holes, and an output shaft of the servo motor is connected with the rotating shaft through the speed reducer. Thetop of the rotating shaft is connected with the threaded rod, the threaded rod is connected with the supporting rod through the threaded hole, and the check ring is arranged at the bottom of one sideof the threaded rod. The supporting rod is arranged inside the sleeve, the two solar panels are installed on the two sides of the top of the top plate, and the LED lamp bodies are installed on the twosides of the bottom of the top plate. The LED lamp bodies are convenient to move, interior repair and part replacement are convenient, the height is conveniently adjusted, and energy conservation andenvironmental protection are achieved.

The invention discloses a feed preheating device of a reduced ferrotitanium powder calcining rotary furnace, and belongs to the technical field of reduced ferrotitanium powder production equipment. The device comprises a preheating box and a clamping plate; an external bracket is welded on the outer surface of the preheating box; a limiting column penetrates in a limiting groove; a feed pipe is arranged on the left side surface of the preheating box; a rotary furnace main body is connected with the lower end of a gas pipe; an exhaust port is formed in the surface of the gas pipe; a connectingpipe is screwed on the left side of a movable joint; an activated carbon filter screen is clamped in a clamping groove; and the clamping plate is positioned above the preheating box. Smoke in the rotary furnace main body can be filtered by the activated carbon filter screen when entering the connecting pipe, so that particle impurities carried in the smoke are intercepted; through the arrangement,the smoke impurities can be prevented from combining with ferrotitanium powder to maintain purity of the ferrotitanium powder; and the ferrotitanium powder accumulated in the preheating box is stirred by a stirring rod to achieve uniform heating of the ferrotitanium powder.

The invention discloses a main server of a numerical control machine tool, which comprises a main machine body, wherein a side plate is mounted on one side of the main machine body; active grooves arearranged at four corners of the side plate; the bottom ends of the active grooves are connected with passive grooves; active pillars are arranged in the active grooves; one ends of the active pillarsextend out of the active grooves and are provided with push-pull blocks; the other ends of the active pillars extend into the passive grooves and are provided with adjusting blocks; connection columns are arranged in the passive grooves; limiting rings are arranged on the connection columns; one sides of the limiting rings are provided with springs; fixing plates are arranged at the two sides ofthe main machine body; connecting plates are arranged on the fixing plates; the top end of the main machine body is provided with a panel; detaching grooves are arranged at the two ends of the panel;and the connection manner between the panel and the main machine body and the connection manner between the side plate and the main machine body are the same. The server is convenient to maintain andmore convenient to use.

The invention discloses an interlocking device and a detection method. A movable contact of a first switch in power wire-in equipment is fixed by a first A mechanical lock, so that power supply of the power wire-in equipment is limited; meanwhile, a movable contact of a second switch in a high-voltage isolator case is fixed in different positions through a second A mechanical lock and a first B mechanical lock, so that power supply of the high-voltage isolator case is limited; and through control of a first B mechanical lock and a third B mechanical lock, the inlet of a high-voltage discharge area is opened when the high-voltage isolator case is powered off, so that when a power supply is cut off, internal maintenance of the high-voltage isolator case and the high-voltage discharge area is facilitated, and accordingly, casualties caused by the reason that a maintainer enters an electric field area during operation of an electric field are avoided.

The invention relates to a safe passage applicable between a middle shield and an equipment bridge, a first fixed platform is arranged on the inner side end face of the middle shield, personnel can goto inner bins of the middle shield and an anterior shield through the first fixed platform; a second fixed platform is arranged on one side opposite to the first fixed platform and is located on theequipment bridge; and an assembling lifting mechanism is arranged between the middle shield and the equipment bridge, the first fixed platform is provided with a telescopic platform capable of being controlled by a control device, and mutual docking of the first fixed platform and the second fixed platform is realized by virtue of the telescopic platform. The control device ensures that the telescopic platform is stretched in place, when the telescopic platform is stretched, the assembling lifting mechanism is ensured to be in a shutdown state, by adoption of the abovementioned scheme, the telescopic platform can judge by itself that work can be started under which working condition, the telescopic platform is ensured not to interfere with the assembling lifting mechanism, the safety of the equipment is improved, and the interior maintenance and cargo handling of a shield machine are facilitated.

The invention discloses a four-rotor vertical shaft impact crusher for mining. The four-rotor vertical shaft impact crusher comprises a bottom plate, a crushing cavity, rotor sets, a feeding hopper and a fixed sleeve block; driving motors are installed at the two sides of the top end of the bottom plate correspondingly, the crushing cavity is fixedly connected to the middle position of the top end of the bottom plate, and material baffles are fixedly connected to the two sides of the interior of the crushing cavity correspondingly; and the rotor sets are movably connected to the two sides of the bottom end in the crushing cavity, and the feeding hopper is fixedly connected to the top end of the cover plate. By means of the four-rotor vertical shaft impact crusher, the four rotor sets are arranged in the crushing cavity, materials enter the crushing cavity through the feeding hopper, the driving motors can drive the rotor sets to rotate, and the entering materials can be thrown out at a high speed; due to the fact that the four rotor sets are arranged in the crushing cavity, the materials thrown out by the rotor sets in pairs collide with one another, and the crushing strength is improved; and meanwhile, as the four rotor sets hedge the materials in pairs , the hedging area of the materials is increased, the collision rate of the materials is improved, and the crushing strength and the crushing rate of the materials are greatly improved.

The invention discloses a device for public culture publicity display. The device comprises a device body; the device body comprises side boards, an LED screen, a storage battery storing chamber, a storage groove, a control panel, a loudspeaker, supporting rods, a display board, an illuminating lamp, an upper cover board, a chain shaft and universal wheels; and the side edges of the display board are connected with the side boards, and the lower parts of the side boards and the display board are connected with the storage battery storing chamber. According to the device for public culture publicity display, video publicity is conducted through the LED screen, publicity can also be conducted by playing audio, the ability to attract crowds is improved, and thus the publicity efficiency is improved greatly; the device is not affected by the outside weather environment, and thus the publicity efficiency is improved; and the overall structure is simple, using is convenient, moving is convenient by mounting the universal wheels, practicability is high, a protection board protects the display board and the LED screen against damage, thus the service life is prolonged, the protection board can be opened, and thus internal maintenance and clearing are convenient.

The invention discloses an environment-friendly gas insulated switch equipment with a monitoring function. The switch equipment comprises buffer parts, a switch equipment body, a base and metal plates, wherein a control panel is fixed to one side of the base , bearing plates are uniformly arranged in the base through the buffer parts, the switch equipment body is fixed at top ends of the bearing plates, a cable chamber is arranged at a bottom end in the switch equipment body, a temperature sensor is arranged on one side in the cable chamber, and the outer side of the switch equipment body is uniformly coated with a polytetrafluoroethylene corrosion-resistant layer. The switch equipment is advantaged in that through the base, the switch equipment body, a current detector, the temperature sensor, a buzzer alarm and a control panel, environment-friendly gas with certain pressure is filled in the switch equipment body to ensure insulativity of the switch equipment body, the temperature sensor is convenient to sense the temperature of the environment-friendly gas in the switch equipment body, when the temperature exceeds a set value, a worker can be conveniently prompted to check, so accidents are avoided.

The invention discloses a pressure-adjustable label paper conveying device which comprises a supporting plate, a support and a driven wheel support, one side of the supporting plate and one side of the support are fixed in a hinged mode, the driven wheel support is fixed to the top of the support, and the other side of the supporting plate and one side of the driven wheel support are fixed through a door holder. A first upper paper guide plate and a driving shaft are installed on the supporting plate, and two driving wheels are arranged on the driving shaft. A second upper paper guide plate and two adjustable driven wheel devices are installed on the driven wheel support, and the two adjustable driven wheel devices are symmetrically arranged. According to the device, the pressure between the driving wheel and the driven wheel can be conveniently adjusted, so that the stability of label paper conveying is improved. In addition, the device is convenient to maintain, sundries left between the driving wheel and the driven wheel can be removed in time, and normal operation of equipment is guaranteed.

The invention discloses a waste gas treatment device, and relates to the technical field of waste gas treatment. The waste gas treatment device comprises a treatment box body, wherein the middle partof the inner wall of the treatment box body is fixedly connected with a purifying machine set body; the upper end of the purifying machine set body is provided with an exhaust fan; the bottom of the inner wall of the treatment box body is fixedly connected with a position limiting plate; the shape of the position limiting plate is triangle. The convenient-to-dismount waste gas treatment device hasthe advantages that through the arrangement of a connecting pipe, an internal threaded pipe, a support plate, an exhaust chimney, a groove, a sealing strip, a rib plate, a second threaded hole, a second screw bolt, a shock absorption pad, a hinge, a cover plate, a pull handle and a sealing sheet, the effect of conveniently dismounting or mounting the exhaust chimney is achieved; when the exhaustchimney is used for a long time and is damaged, the exhaust chimney can be conveniently replaced due to mutual threaded connection of the connecting pipe and the internal threaded pipe; the service life of the waste gas treatment device can be prolonged; the resources of people are saved.

The invention discloses a fan blade type three-dimensional holographic image display device. The device includes a framework, a fan blade and a control panel, wherein the framework is internally provided with the fan blade, a lower portion of the fan blade is connected with a driving device, the driving device consists of a motor, a mounting groove, a base and a fixing seat, the fixing seat is internally provided with the mounting groove, and the mounting groove is internally equipped with a motor. The device is advantaged in that through heat dissipation holes, internal heat can be effectively dissipated to prevent damage caused by excessive internal heat, usage security is improved, the corresponding holographic phantom image can be presented by controlling the lighting time of LED lights through the control panel, the D-phantom stereo display effect can be achieved without wearing any polarized glasses, practicality is improved, the control panel can be quickly removed and mounted through a fixing block and a fixing slot and is easy to maintain and clean up, other control panels are further convenient to replace, and the service life is prolonged.

The invention discloses a detection control device for computer big data product development. The detection control device comprises a data acquisition and processing box, wherein a box body upper plate is mounted at the upper part of the data acquisition and processing box body; an access door plate is mounted in the box body upper plate; limiting sliding grooves are symmetrically formed in the box body upper plate; limiting sliding blocks are fixedly connected to the positions, close to the inner end, of the two sides of the access door plate; the limiting sliding blocks are located in the limiting sliding grooves; a reset spring is installed in each limiting sliding groove; one end of each reset spring is connected with the corresponding limiting sliding block; the other end of each reset spring is connected with the front end wall of the corresponding limiting sliding groove; and a rolling mechanism is installed on the side face of each limiting sliding block. Through adopting designed isolation buffer pieces, a PCB integrated board can be erected and fixed on a box body lower board, so that the contact area of the PCB integrated board and the box body lower board is reduced, when the box body of the detection control device is impacted, the vibration transmitted to the PCB integrated board is reduced, and the sensitivity of internal elements of the PCB integrated board ismaintained.

The invention discloses an enterprise management consultation information sharing device. The device comprises a shell, a cooling system and a mobile unit; a touchable display is arranged on the front end slope of the shell, a containing groove is formed in the rear end face of the shell, a mounting base is fixed to the lower end of the containing groove, an auxiliary moving unit is arranged on the mounting base, a pressing unit is arranged in the middle of the upper end of the mounting base, and an inner cavity is formed in the middle of the shell; and an auxiliary overhauling unit is arranged on the top end face of the inner cavity, an overhauling opening is formed in the left end face of the shell, the overhauling opening is communicated with the inner cavity, an overhauling opening sealing unit is arranged at the overhauling opening, and a groove is formed in the middle of the lower end face of the shell. The device is provided with a corresponding overhauling opening sealing unit and the auxiliary overhauling unit, through cooperative use of the overhauling opening sealing unit and the auxiliary overhauling unit, overhauling work of the device is conveniently achieved, and the corresponding cooling system is arranged and can cool the working environment of electric appliance elements in the device.

The invention relates to a multi-angle absorption detector for air purification, which includes a main body and a movable column. A connecting mechanism is connected to the inside of the main body, and the main body and the connecting mechanism are movably connected. The connecting mechanism is close to two sides of the main body. A chute is provided on the side, and the main body and the chute are fixedly connected. The beneficial effects of the present invention are: by manually adjusting the mounting plate on the main body, the absorption hole and the adjustment mechanism can slide between the chute, and the sliding absorption hole can be moved through the limiting column between the main body and the chute. The adjustment mechanism is fixed between the main body and the chute, which helps to extend the purification detection equipment inside the main body, so that the movable column and the air purification plate can be buckled between the main body and the chute, which is beneficial to protect the purification The internal structure of the detection equipment can form an installation protective layer on its surface, and the movable column and the air purification plate can be slidably engaged between the main body and the connecting mechanism.

The invention relates to an efficient enzymolysis system of a microbial preparation. The problems that in the prior art, a vertical enzymolysis tank is uneven in stirring and heating, and materials are not prone to being completely discharged are effectively solved. According to the technical scheme, the device comprises a tank body and a base, and is characterized by further comprising a heat preservation air pipe, a circulating pipe, a conical part, a backflow pipe and a hydraulic cylinder. The system is simple in structure and convenient to operate, the stirring efficiency can be effectively improved, and meanwhile material residues in the material discharging process can be greatly reduced; and meanwhile, feeding and internal maintenance are facilitated, and practicability is high.

The invention discloses a boat-type tractor hull installed on a frame, which comprises a hull main body, the hull main body is provided with a concave curved surface structure used for reducing resistance during steering or reversing of a boat-type tractor, the hull main body comprises a hull floor and a hull side plate, and the hull floor and the hull side plate are integrally connected through a curved surface. A bow frame mounting plate, a hull frame mounting plate and a stern frame mounting plate which are used for mounting the frame are fixedly mounted on the hull main body, a stern plate is fixedly mounted at the stern of the hull main body, and frame mounting seats are fixedly mounted on the bow frame mounting plate, the hull frame mounting plate and the stern frame mounting plate. Compared with the prior art that a transmission system is supported by a ship shell, an existing frame mounting structure is adopted, so that the hull is simpler and lighter, the whole modeling is streamlined, the resistance is greatly reduced during paddy field operation, and meanwhile, the structural strength is better.

The invention discloses Chinese medicine factory waste Chinese medicine residue processing equipment which comprises a top Chinese medicine residue discharging component; a plurality of groups of middle Chinese medicine residue smashing and mixing components are fixedly arranged below the top Chinese medicine residue discharging component through assembling buckles; bottom Chinese medicine residuesmashing and mixing components are fixedly arranged below the middle Chinese medicine residue smashing and mixing components through assembling buckles; overturning components are fixedly arranged inthe middles of the bottom Chinese medicine residue smashing and mixing components; and a plurality of groups of smashing and mixing components are fixedly arranged on the cylinders of the middle Chinese medicine residue smashing and mixing components and the bottom Chinese medicine residue smashing and mixing components. The smashing and mixing components are adopted to smash and mix various Chinese medicine residues; when an overturning screw rod rotates forward, the Chinese medicine residues sliding in the cylinders of overturning cylinders are conveyed to the tops of the overturning cylinders; and when the overturning screw rod rotates reversely, the Chinese medicine residues sliding in the cylinders of the overturning cylinders are conveyed in the pipe body of a discharging pipe.

The invention discloses a cabinet door opening limiting and fixing seat of a machine cabinet and the machine cabinet thereof. The cabinet door opening limiting and fixing seat comprises a machine cabinet body, wherein one side surface of the machine cabinet body is hinged to a sealing plate, the upper end of one side surface of the sealing plate is rotatably connected with a supporting rod through a rotating shaft, one end of the supporting rod is fixedly connected with a bent hook, and the top of the machine cabinet body is fixedly connected with a rectangular block; a plurality of round holes penetrating through the other side surface of the machine cabinet body are uniformly formed in one side surface of the rectangular block; rectangular rods are glidingly connected into the round holes; and a plurality of rectangular holes penetrating through one side surface of each rectangular rod are uniformly formed in one side of the upper surface of each rectangular rod. The device has the advantages that the rotated sealing plate can be conveniently limited, the continuous rotation of the sealing plate is avoided, a worker can conveniently overhaul the inside of the machine cabinet body, the rectangular block is arranged on the top of the machine cabinet body, and the movable rectangular rod is arranged inside the rectangular block, so that the connection with the supporting rod can be conveniently realized, the sealing plate can be conveniently limited, and the use is convenient.

The invention discloses a compact low-resistance bag-type dust collector, which comprises a body, wherein a cover body is attached to the top of the body, a plurality of bags are installed on the inner wall of the body, a cleaning mechanism is arranged at one end of the outer wall of the body, a driving shaft is fixedly connected to the rear end face of the outer wall of a rod body, and the driving shaft is rotationally connected with the inner wall of the body through a bearing. According to the compact low-resistance bag-type dust collector, a driving shaft is connected with an external driving device so as to make the driving shaft drive a rod body and a second sliding block to rotate, when the second sliding block rotates, a sliding groove plate is driven to do reciprocating lifting motion, when the sliding groove plate moves, a supporting rod and a spray head are driven, a corrugated pipe and a telescopic rod stretch out and draw back to drive the nozzle to enter a bag to perform reciprocating lifting motion, then the nozzle drives airflow, and after a cover body is in butt joint with the body, a rubber pad in the cover body can abut against the outer wall of the body, so that the sealing stability of the body and the cover body is guaranteed.

The ultra-large circulating fluidized bed boiler comprises a hearth and a cyclone separator, the hearth is of a U-shaped structure composed of a front-side hearth, a left-side hearth and a right-side hearth, the front-side hearth, the left-side hearth and the right-side hearth are communicated with one another, the left-side hearth and the right-side hearth are symmetrically arranged relative to the axial center line of the boiler, and a notch of the U-shaped hearth faces a tail flue. And the cyclone separator is arranged in the middle area of the U-shaped hearth and is connected with the hearth through a flue. The hearth of the U-shaped structure is adopted, after the hearth is large, the width-depth ratio of the section is appropriate, the secondary air penetrability is high, meanwhile, the hearth of the U-shaped structure, the left hearth and the right hearth are communicated together, through uniform air distribution and coal feeding, it is guaranteed that flowing in the boiler is uniform, the flue gas deviation of the hearth is small, and the reliability of the boiler in the operation process is improved; the U-shaped hearth tail notch facilitates internal maintenance, the left separator and the right separator are arranged in the middle area of the U-shaped hearth, the occupied area is small, and maintenance is easy.

The invention discloses an intelligent electric power inspection unmanned aerial vehicle for a high-voltage overhead line. The intelligent electric power inspection unmanned aerial vehicle comprises a shell, a power unit, a shooting unit and a control unit, wherein the power unit and the shooting unit are installed on the shell; the control unit comprises a sealing plate, a single-chip microcomputer, an adsorption block, a magnet, a communication module and a battery, the single-chip microcomputer and the communication module are arranged on the right side of the interior of the shell, the input and output end of the communication module is connected with the I / O end of the single-chip microcomputer, a sliding groove is formed in the right side of the shell, the sliding groove is communicated with a maintenance opening of the shell, the sealing plate and the sliding groove longitudinally slide, the adsorption block is arranged on the right side of the sealing plate, an iron sheet is embedded in the inner side of the adsorption block, the magnet is embedded in the right side of the shell, the sealing plate and the magnet are attracted in a matched mode, and the battery is installed in the shell; and the input end of the single-chip microcomputer is electrically connected with the output end of the battery through an external control switch set, the functions are multiple, the disassembly and assembly are convenient, and the maintenance is convenient.

The multifunctional slicing machine comprises a machine box, a first motor, a cutting disc, a second motor and a hobbing cutter, a first material guide plate is arranged at an inlet of a first cutting chamber, the cutting disc is arranged at a discharging opening of the first material guide plate, the first motor is connected to the cutting disc, an adjustable cutter is arranged on the cutting disc, and the second motor is connected to the second material guide plate. A second material guide plate is arranged at an inlet of the second cutting chamber, two matched hobs are arranged below a blanking port of the second material guide plate, a second motor is connected to the hobs, material receiving sliding plates are arranged at the bottoms of the first cutting chamber and the second cutting chamber, and discharging sliding ways are arranged below the material receiving sliding plates; a side plate of the machine box is provided with a discharging opening matched with the discharging sliding way. The two cutting chambers are arranged, cutting can be conducted at the same time, the cutting efficiency is improved, the angle of the blade can be adjusted, and therefore the cutting thickness can be adjusted, different cutting requirements are met, the types of cut materials are increased, and universality is improved.

The invention relates to an efficient energy-saving elevator door motor and a control system thereof. The motor comprises a rack, a rotary cover and a reinforcing frame. The middle part of the rack isconnected with an equipment plate. A fastening column is arranged on one side of the interior of the equipment plate. A limiting plate is arranged on one side of the top end of the equipment plate. One side of the outer part of the rack is connected with a hood. A connecting bolt is mounted in the middle of the hood. A rotary cover is arranged on one side of the connecting bolt. The top end of the rotary cover is connected with a motor system device. The reinforcing frame is arranged at the bottom end of the rotary cover. A sliding groove column is arranged at the bottom end of the equipmentplate. Sliding boxes are arranged on the two sides of the sliding groove column. The elevator door motor has the beneficial effects that the belt between the elevator belt pulleys effectively penetrates through the space between the isolation plate and the belt hole, so that the belt of the elevator belt pulleys has an independent rotating space, foreign matters are prevented from entering the belt of the elevator belt pulleys, the foreign matters are prevented from entering the efficient energy-saving elevator door motor, and the failure rate of the efficient energy-saving elevator door motoris reduced.