211 results about "Wear Problem" patented technology

The invention discloses an embedded injection mold, and relates to the technical field of mold injection, the embedded injection mold comprises an upper mold set, a lower mold set is mounted below the upper mold set, an embedded auxiliary mechanism is arranged below the lower mold set, and the embedded auxiliary mechanism comprises an upper moving plate and an upper assembly pipeline which are symmetrically distributed below an insert main body; the lower portion of the upper assembling pipeline is communicated with a lower assembling pipeline, a lower moving plate is installed in the lower assembling pipeline, the upper moving plate and the upper assembling pipeline form a closed cavity in the downward moving process, generated negative pressure is transmitted to the insert through the hole discharging piece, and a multi-layer round hole pipe of the hole discharging piece is matched with the outline of the irregular insert according to the height difference. Compared with the prior art, the positioning pin has the advantages that the positioning pin is firstly adsorbed from the edge and then transited to the center, deformation of the insert caused by single-point stress is avoided, meanwhile, direct friction between a positioning part and the insert is reduced through non-contact adsorption, the problem of abrasion of a traditional positioning pin is avoided, frequent maintenance and replacement are not needed, long-term positioning accuracy is guaranteed, and production interruption time is shortened.

The invention belongs to the technical field of oil exploitation equipment, and particularly provides a screw pump rotor surface treatment optimization method and system based on wear trajectory quantization, and the method comprises the steps: obtaining the contact conditions of the motion trajectory of feature points on the rotor surface and the inner wall of a stator in different angle intervals according to the motion trajectory of the rotor surface; calculating the geometric wear strength of each feature point according to the contact condition; and optimizing the surface structure of the rotor according to the geometric wear strength so as to homogenize the wear. From the perspective of surface treatment optimization, the problem of uneven wear can be more effectively solved by quantifying the wear track and optimizing the rotor surface treatment in a segmented manner.

The utility model relates to the technical field of electronics, in particular to a valve structure, an air suspension system and a vehicle. The valve structure comprises a fixing assembly, a valve element, a first elastic piece and a second elastic piece, the fixing assembly is provided with a cavity and a first opening communicated with the cavity, and the valve element is arranged in the cavity and can move between a first position and a second position so that the first opening can be closed when the valve element is located at the first position and opened when the valve element is located at the second position; the first elastic piece is arranged at one end of the valve element and provides first elastic force towards the first position for the valve element, and the second elastic piece is arranged at the other end of the valve element and provides second elastic force towards the second position for the valve element. According to the technical scheme, the first elastic piece and the second elastic piece are arranged to assist valve opening and valve closing, the valve opening and closing response speed of the valve structure can be increased, the impact force of the valve element can be buffered, the problem of loss of the valve element, the fixing assembly and other components can be solved, and the service life of the elastic pieces is prolonged.

The utility model relates to test fixture technical field, especially a solid state disk test fixture, including the bottom plate of horizontal setting, the top surface fixedly connected with frame of bottom plate, the top of frame is connected with the U type frame of sliding, the left and right sides of U type frame all are connected with two symmetrical settings locking bolt of rotation. The utility model's advantage lies in: this solid state disk test fixture drives the rotation of driving rod through motor, drives the cam to push the upward movement of lifting plate, makes the jackscrew steady and lifts the hard disk body. Spring provides the buffer force in the process of jacking, ensures that the separation process of hard disk body and test socket is even. This automatic ejection mechanism completely avoids the wear and tear problem of golden finger caused by uneven force when pulling out manually, and the accurate guidance of the jackscrew through the through hole makes the hard disk body keep vertical rising, protects the contact surface integrity of golden finger and test socket, and significantly improves the reliability and durability of test and plug.

The application discloses a kind of series-parallel hybrid vehicle engine bush wear-preventing control method and system, method includes the following steps: obtaining the maximum vibration frequency corresponding to each vibration amplitude of hybrid vehicle engine cylinder body;Obtain the vibration frequency corresponding to the unacceptable wear thickness value of the oil film between crankshaft and bush when engine assembly is in different acceleration conditions;Periodically obtain the vibration amplitude of engine cylinder body under normal driving conditions of hybrid vehicle;Obtain the damage value of engine bush;According to the damage value of the obtained engine bush, control is executed different wear control strategy.The series-parallel hybrid vehicle engine bush wear-preventing control method provided in the application effectively avoids the occurrence of the problem of bush wear caused by excessive consumption of the oil film between the crankshaft and the bush.

The utility model discloses a winch device which is used for hoisting a water taking robot and comprises a hoisting frame, a pulley, a winch, a cross rod and two groups of hoisting rope components, the pulley is arranged on the hanging bracket and can rotate relative to the hanging bracket; a twisted rope of the winch bypasses the pulley, and the tail end of the twisted rope is connected with the cross rod; the two sets of lifting rope assemblies are symmetrically arranged on the two opposite sides of the cross rod and used for being detachably connected to the two opposite sides of the water taking robot. The two lifting rope assemblies located on the two sides of the transverse rod can avoid a shell of the water taking robot when drooping, and the problem of abrasion caused by direct contact between branch ropes and the edge of the robot in an existing lifting mode is solved.

The utility model discloses a kind of liquid chlorine filling anti-leakage intelligent connecting devices, including liquid chlorine storage tank, the top of the liquid chlorine storage tank is equipped with connecting pipe, fixed ring is sleeved on the connecting pipe, the connecting pipe is equipped with cover plate, locking mechanism is installed on the side of the cover plate, filling mechanism is installed on the cover plate, first locking sleeve is sleeved on the filling mechanism, second locking sleeve is installed in the first locking sleeve, the second locking sleeve is fixed with feed pipe. The utility model is through the buckle type design of locking mechanism and fixed ring, realize the even locking and quick disassembly of cover plate and connecting pipe, effectively avoid the uneven stress and wear problem of traditional sealing structure;Filling mechanism is matched with double locking sleeve and shut-off valve, forms multilayer sealing system, in combination with the sealing seat and sealing ring of rubber material, significantly improve the anti-leakage performance under high pressure.

This utility model discloses a locking device for a substation, including a base, a housing mounted on top of the base, and a door hinged to the front surface of the housing; a locking assembly, including an insert plate mounted on the front surface of the door, a threaded groove on the front surface of the insert plate, a stabilizing seat mounted on the top of the base and located on one side of the housing, a slot on the front surface of the stabilizing seat for the threaded groove to be inserted, a threaded hole on the rear surface of the stabilizing seat and communicating with the slot, and a threaded rod threadedly connected to the threaded hole, one end of which can be threadedly connected to the threaded groove; and a knob mounted on the other end of the threaded rod. The beneficial effects of this utility model are: through the designed locking assembly, the open door can be stabilized. Compared with the existing technology of positioning rod and positioning hole cooperation, it effectively avoids the friction and wear problem caused by frequent insertion and removal, improves the locking stability of the door, and ensures the safety of substation equipment maintenance and other operations.

The application discloses a one-way valve for a compressor assembly, and a compressor and a liquid accumulator, the compressor assembly comprising a compressor and a liquid accumulator, at least one of the compressor and the liquid accumulator being provided with the one-way valve, the one-way valve being adapted to allow one-way exhaust of the compressor and one-way suction of the liquid accumulator, the one-way valve comprising a valve housing assembly and a valve core assembly, the valve housing assembly comprising a valve seat and an inner housing, the valve core assembly comprising a valve core unit and an elastic element, wherein a part of the valve core and the inner housing in sliding fit is a valve core fit part, a part of the inner housing and the valve core in sliding fit is an inner housing fit part, at least one of the valve core fit part and the inner housing fit part is subjected to a hardening treatment to form a surface hardening layer on at least a corresponding fit surface. According to the one-way valve, the wear problem can be effectively improved, and the adverse effect of wear on the service life and performance of the one-way valve is improved.

The utility model discloses a uniform material distributing and distributing chute, belongs to the field of material distributing and transferring equipment, and particularly relates to a uniform material distributing and distributing chute. The material distributing device comprises an upper material distributing bin and a lower material distributing bin, the material distributing bin is composed of a feeding flange, a material distributing plate, a material accumulating plate, a door sill lining plate, an access door and a shell, and the material distributing bin is composed of a middle partition plate, a turning plate material distributing device, a lining plate, a shell and a discharging port. Two cross beams with long holes are arranged on the outer side of the upper portion of the shell, the material distributing plate is hoisted and fixed to the middle of the interior of the shell through high-strength bolts, the position of the material distributing plate can be adjusted within the range of the long holes of the cross beams, and materials can be divided into consistent throughput from the left side to the right side of the vertical face by adjusting the position of the material distributing plate. Through position adjustment of the material distribution plate, dynamic material distribution of the turning plate and a wear-resistant structure, the problems that the screening efficiency is low and the chute is easy to wear due to uneven left-right distribution of materials and particle layering are solved, and the device has the advantages of being high in wear resistance, large in flux and long in service life.

The invention discloses an inclined screw pump for conveying a viscous corrosive medium, and belongs to the field of conveying pumps. Comprising a pump body, a hopper, a feeding assembly, a pre-leading-in pipeline, a rotor and a stator, the feeding assembly is composed of an arch breaking unit, a propelling unit and a pre-pressing leading-in unit, the arch breaking unit breaks a hopper material arch, the propelling unit achieves stable feeding through a main spiral and a reverse auxiliary spiral, the pre-pressing leading-in unit guides materials into a pump body suction inlet, the rotor is a single-head spiral, and the stator is a stator. A screw pitch transition section is arranged between the inlet section and the outlet section, the outer surface is wear-resistant and corrosion-resistant, and the stator is of an eccentric spiral cavity structure and comprises a first stator metal framework ceramic lining and a second stator fluoropolymer lining. Through structural optimization of the feeding assembly, the rotor and the stator, low-shear, high-abrasion-resistance, high-corrosion-resistance and controllable-flow conveying is achieved, the problems that high-viscosity corrosive media are difficult to feed, shear damage is caused and a pump body is abraded are effectively solved, and the high-shear-resistance and high-corrosion-resistance pump is suitable for the precise coating and glue injection process of a new energy lithium ion battery production line.

The utility model provides a polish rod breakage sealing device special for a polish rod sealer. The polish rod breaking and falling sealing device special for the polish rod sealer comprises a lower fixing pressing cap and an upper sealing pressing cap, the lower fixing pressing cap and the upper sealing pressing cap are symmetrically arranged up and down, and a main body is installed on the lower fixing pressing cap and the upper sealing pressing cap in a sealed mode through screw threads; a fixed blocking cap and a spring pressing cap are hermetically mounted on the outer walls of the two sides of the main body through screw threads respectively; the same polish rod is installed on the lower fixing pressing cap and the upper sealing pressing cap in a sealed and sliding mode, and the polish rod is matched with the lower fixing pressing cap and the upper sealing pressing cap. According to the polish rod breaking and falling sealing device special for the polish rod sealer, the problem of abrasion of the polish rod and the sealing flashboard caused by vertical reciprocating motion of the polish rod in the long-time production process can be avoided through contact of the rolling shaft and the polish rod, and meanwhile oil-water mixed objects carried by the polish rod can be prevented from entering the cavities in the two sides; therefore, the cavities on the two sides are kept clean and tidy.

This invention provides a pump assembly, a compressor, and an air conditioner. The pump assembly includes a crankshaft, rollers, and a cylinder. The rollers are fitted onto the outer circumferential wall of the crankshaft and are connected by threads. The rollers can reciprocate linearly along the axial direction of the crankshaft under the action of crankshaft rotation. The rollers are located inside the cylinder and divide the internal space of the cylinder into independent first and second cavities. The first and second cavities are arranged along the axial direction of the crankshaft. According to this invention, the counterweight is eliminated, eliminating the need for a counterweight to balance the force. The crankshaft has no eccentric circle, resulting in more balanced force on the compressor, reducing compressor vibration, and avoiding the vibration and component wear problems caused by eccentric rotation in the prior art. At the same time, the sliding vane structure in the prior art is eliminated, reducing moving parts, thereby reducing friction loss and refrigerant leakage, and improving the energy efficiency and reliability of the compressor.

The utility model relates to the technical field of surface grinding machines, in particular to a surface grinding machine for die steel finishing, which comprises a machine body, a workbench movably arranged at the upper end of the machine body, a vertical stand column fixedly mounted in the middle of the back of the machine body, a mounting seat movably arranged on the front of the stand column, and a grinding wheel mounted on the front of the mounting seat through a grinding motor. A baffle is arranged on the front face of the mounting base and located outside the polishing wheel. Scraping and sweeping mechanisms are arranged below the two sides of the baffle correspondingly. A filter box is fixedly installed outside the bottom end of the right side of the bed body, and a spraying mechanism is arranged between the filter box and the baffle. According to the utility model, the scraping plate is elastically matched with the spring for use, so that the surface of the polishing wheel and a workpiece polishing area are automatically and adaptively pressed by the scraping plate, the problems of vibration, noise and excessive abrasion generated by a traditional rigid scraping plate in a height difference transition area are effectively solved, the scraping stability is obviously improved, and the service life of the scraping plate is obviously prolonged.

The invention relates to the technical field of optical fiber rotary connectors, in particular to a micro multi-core optical fiber rotary connector rotary mechanism and an optical fiber rotary connector, and solves the problem of abnormal gear wear caused by axial movement of a transmission gear in the prior art. The rotating mechanism comprises a rotating body and a rotating body, the rotating body and the rotating body are in transmission connection through a transmission part, the transmission part comprises an annular positioning seat, two bearing seats are arranged on the inner side of the positioning seat, a compression spring is arranged between the two bearing seats, and transmission gears meshed with the rotating body and the rotating body are rotationally connected to the bearing seats. The positioning seat is in threaded connection with a positioning pin, and the end of the positioning pin extends into the inner side of the positioning seat to be matched with the bearing seat in an inserted mode. The transmission gear has the advantages that the inserting portion of the positioning pin is matched with the radial positioning hole of the bearing seat in an inserting mode, reliable locking of the axial position of the bearing seat is achieved, the defect that the transmission gear is prone to axial movement is fundamentally overcome, and the problem of abnormal abrasion caused by rigid abutting of the end face of the gear is avoided.

The utility model relates to the technical field of electric locomotive shaft head end cover mounting equipment, and discloses electric locomotive shaft head end cover mounting equipment, which comprises a bracket, a mounting bottom plate and a guide plate, vertical guide rods are fixed on two sides of the top of the mounting bottom plate, and a steel ball is assembled between a screw rod and a movable sleeve. The sliding groove is formed in the top of the object bearing plate, the shaft head end cover is placed above the object bearing plate in the working process, the first telescopic rod is installed on the side edge of the vertical plate, so that the arc-shaped clamping plate can be pushed to move after the first telescopic rod works, the sliding block slides in the sliding groove in the moving process, and the shaft head end cover can be clamped in the sliding groove. After the arc-shaped clamping plates move to the positions of the two sides of the shaft head end cover, the two arc-shaped clamping plates are used for clamping the position of the shaft head end cover, and during clamping, the side edges of the arc-shaped clamping plates are bonded and assembled with the protective pad through the adhesive layers, so that the abrasion problem caused by hard contact of the shaft head end cover is reduced, and the service life of the shaft head end cover is prolonged. Therefore, the overall clamping and positioning capacity is well improved in the working process.

The utility model discloses a shock absorber, a suspension system and a vehicle. The shock absorber comprises a first cavity, a second cavity, a piston and a damping adjusting assembly, the first cavity and the second cavity are both used for containing media, the piston is movably arranged in the second cavity, the first cavity and the second cavity are selectively communicated or isolated through the damping adjusting assembly, and the damping adjusting assembly comprises a magnetic suction filter. The magnetic suction filter comprises a magnetic suction part, and the magnetic suction part is used for magnetically adsorbing magnetic metal in a medium flowing through the magnetic suction part. According to the shock absorber, the magnetic metal is attracted through the magnetic attraction part so as to reduce flowing of the magnetic metal in a medium, influence on damping and damage to internal parts, the problem that the internal parts of the shock absorber are abraded by the magnetic metal is solved, the damage risk of the internal parts of the shock absorber is reduced, the stability of the shock absorber is improved, and the service life of the shock absorber is prolonged.

The invention belongs to the technical field of industrial furnace combustion, and particularly relates to a protective device of a multi-purpose furnace combustor, which comprises an ion generator, a guide spray pipe, a torque part and a scraping part, wherein the left end of the guide spray pipe is inserted into the axis of an inner cavity of the ion generator through an insertion port; the torque component sleeves the right side of the outer surface of the ion generator and drives the scraping component to rotate around the guide spray pipe; the torque member includes a guide base plate, a torque motor, and a guide outer rod. According to the device, the scraping part can be driven to the corresponding point position according to the position where coal cinder is attached to the outer surface of the guide spray pipe, then targeted scraping work is conducted, and therefore coal cinder cleaning work on the outer surface of the guide spray pipe is achieved; and the parts except the coal cinder cannot be rubbed and scraped, so that the whole outer part of the guide spray pipe cannot be seriously abraded, meanwhile, the scraping range of the conical surface scraping plate is narrowed, and the cleaning efficiency of the device is improved.

The invention provides a development method of a vehicle door sealing strip, which is used for carrying out related design of the vehicle door sealing strip aiming at the working content of each node in the whole vehicle development process, and comprises the steps of material type selection to multi-stage verification, material-stage verification, part-stage verification, system-stage verification and whole vehicle-stage verification, and the whole vehicle-stage verification comprises material-stage verification, part-stage verification, system-stage verification and whole vehicle-stage verification. Through the relatively complete verification process of the abnormal sound and wear problems of the sealing strip, the abnormal sound and wear problems of the vehicle door sealing strip are greatly reduced.

The application discloses a battery clamp, which comprises a mounting frame, a plurality of layer plates, a guide rail and two push plates, the layer plates are movably arranged on the mounting frame along a first direction, the guide rail is arranged on the mounting frame and extends along the first direction, and the two push plates are arranged in parallel along the first direction and are arranged between the layer plates. The application can avoid the problem of rapid wear caused by point contact in the related art, can make the guide rail and the push plate have a better guiding cooperation effect, and is thus beneficial to preventing parallelism deviation between the push plates.

The utility model provides a wear-resistant nylon fishing net, which relates to the field of fishing nets and comprises a plurality of buckled fishing nets and a protective structure. The protective structure comprises two shells which can be combined or separated, one shell is provided with a containing space, and the containing space is used for buckling the frame sleeve after the two shells are combined. According to the utility model, the second shell and the first shell are combined, and the buckle knots are framed and sleeved, so that the problem of abrasion caused by frequent friction of the buckle knots during normal operation is solved.

The utility model relates to a rotating stand device for vacuum coating, which comprises a rotating stand body for assembling a tool clamp, a magnetofluid device and a driving mechanism, the magnetofluid device and the driving mechanism are positioned outside a coating chamber, and a mounting hole is formed in a chamber bottom plate of the coating chamber. The magnetofluid device comprises a magnetofluid body, an upper connecting shaft part and a lower connecting shaft part, the upper connecting shaft part and the lower connecting shaft part are arranged at the upper end and the lower end of the magnetofluid body respectively, the magnetofluid body is installed on the cavity bottom plate through an insulation sealing assembly, the upper connecting shaft part penetrates through the installation hole to be connected with the rotating frame body, and the lower connecting shaft part is in transmission connection with the driving mechanism. According to the scheme provided by the utility model, the problem that the bearing in the magnetic fluid device is easy to wear in a vacuum state can be solved, and the service life and the reliability of coating equipment are improved.

The utility model discloses a machining center Z-axis tool setting gauge which comprises a fixed base, a guide groove is formed in the upper surface of the fixed base, a threaded lead screw is rotationally installed in the guide groove through a bearing, the threaded lead screw is a positive and negative threaded lead screw, and threaded seats are connected to positive and negative threads of the threaded lead screw in a threaded and sleeved mode. Clamping plates are fixedly mounted on the upper surfaces of the two threaded seats, two limiting insertion strips are fixedly mounted on the outer walls of the opposite sides of the two clamping plates, the two sets of limiting insertion strips are distributed in a mirror symmetry mode, a first-stage limiting hole is formed in the upper side of each limiting insertion strip, and a tool setting base is arranged between the two clamping plates; the tool setting base can be effectively subjected to plane limiting and fixing work on the front portion, the rear portion, the left portion and the right portion of the tool setting base, the good tenon-and-mortise type limiting and fixing effect is achieved, practicability is higher, mounting and dismounting are convenient and fast, and the problem of abrasion caused by direct assembling of traditional screws can be effectively solved by avoiding direct high-strength frequent dismounting of the screws.

The present invention relates to a mobile system for a short-span, thin-seam coal mining machine, comprising a machine body, a guide device, and a traction connection device. The guide device comprises a guide shoe and a track, the track being laid in a straight line in the left-right direction. The guide shoe is mounted at the rear of the machine body and supports the machine body from below. The guide shoe straddles the track through its guide groove and is slidably connected to the track left and right. The traction connection device comprises a connecting plate, a connecting hook, and a traction chain. One end of the connecting plate is hinged to the machine body, and the other end of the connecting plate is hinged to one end of the connecting hook. The hinge axes of these two hinges extend left and right. The other end of the connecting hook is configured as a cylindrical structure with an axis extending left and right. The cylindrical structure is disposed in a chain groove and is slidably connected to the chain groove. The traction chain is connected to the cylindrical structure. The present invention can solve the wear problem of chain traction in thin or extremely thin coal seam coal mining machines.

The utility model discloses a high-efficiency ball-end ultra-dense tooth milling cutter with a composite blade, which belongs to the technical field of milling cutters and comprises a milling cutter body, the milling cutter body comprises a cutter body and a blade component, the blades are distributed on the outer surface of the cutter body along the circumferential direction, and the blades are unequally distributed on the cutter body; each blade comprises a margin, the width value of the margin is 1% of the blade diameter, and the margin is distributed at the + / -75-degree position of the ball head; the edge strip is smooth in surface, has certain hardness and wear resistance, can effectively restrain the retreating of the edge point caused by the wear of the cutter, and ensures the contour precision of the ball head, so that the cutting precision is ensured. The tool nose is arranged at the foremost end of the blade, the tool nose is provided with the two contact points, and the two contact points of the tool nose are both located at the foremost end of the blade, so that the abrasion problem caused by stress concentration possibly occurring to a single contact point and zero linear speed is effectively avoided.

This invention provides a wireless audio transceiver structure, including a main housing. One end of the main housing has a mounting port through which a plug is rotatably mounted. A connecting shaft is symmetrically arranged at one end of the plug. Through holes are provided on both sides of the mounting port for the connecting shaft to pass through. One end of the connecting shaft passes through the through holes and is rotatably connected to a fixing member. One end of the fixing member is fixedly connected to the main housing by a fastener. This invention uses a metal fixing member to bear the rotational force of the connecting shaft, forming a rotating pair between the metal shaft and the metal fixing member. This avoids the wear problem caused by direct friction between the metal shaft and the plastic housing, fundamentally solving the connection loosening and failure caused by plastic wear, and significantly extending the service life of the plug rotation mechanism. It is especially suitable for applications requiring frequent plugging and unplugging.

The utility model discloses a long-service-life shaft end, and relates to the technical field of shaft connection. The shaft end comprises a shaft end body, a sleeve and a reinforcing ring, a step face is arranged on the shaft end body, the sleeve is sleeved on the shaft end body and is in contact with the step face, an outer key groove is arranged on the inner wall of the sleeve, an inner key groove matched with the outer key groove is arranged on the peripheral side face of the shaft end body, a key strip is arranged between the outer key groove and the inner key groove, and a plurality of screw openings are arranged at one end of the sleeve far away from the step face. An annular opening is formed in the circumferential side face of the shaft end body. According to the utility model, the original oil seal mounting position on the shaft end body is removed by turning, the inner key slot and the annular opening are turned, the design of the sleeve and the reinforcing ring is matched, and the sleeve replaces the original oil seal mounting position and is used for being in contact with the framework oil seal, so that after the abrasion problem occurs, the maintenance and overhaul can be carried out by replacing the sleeve, and the service life of the shaft end is prolonged. The situation that the whole shaft needs to be replaced is avoided, maintenance cost is reduced, and therefore the service life of the shaft and the shaft end is prolonged.

The invention relates to a design method of a diamond-like carbon wear-resistant coating for a zirconium alloy component of a nuclear reactor, which comprises the following steps: establishing a fretting wear prediction model of the zirconium alloy component in a nuclear reactor environment, and calibrating the model based on experimental data to simulate flow-induced vibration and contact stress distribution; the performance parameters of the diamond-like carbon coating are designed through an optimization algorithm by utilizing model output and combining friction coefficient and wear rate data; based on the design parameters, simulating and optimizing the coating preparation process through a process simulation model, so that the coating is firmly combined with the substrate; and finally, verifying the long-term wear performance of the coating through experiments to finish design verification. Compared with the prior art, through the systematic design process, the fretting wear resistance of the coating is remarkably improved, the problem that zirconium alloy parts are worn due to flow-induced vibration is effectively solved, the service life of the parts is prolonged, and the operation safety of a nuclear reactor is guaranteed.

The application belongs to the technical field of centrifugal pumps, and particularly relates to a high-speed high-pressure large-flow fuel centrifugal pump and a dismounting method thereof. The designed fuel centrifugal pump is composed of a shaft impeller, a main shaft shell, a roller bearing, a bearing outer ring bushing, a bearing inner ring bushing, a ball bearing, a pressing plate, a locking nut, a transmission rod, an inlet shell, a plug cover, a circular stop block and a sealing assembly. Through integrated design of the impeller and the impeller shaft, the circumferential gap existing in the traditional structure does not exist in the circumferential direction of the impeller and the impeller shaft, and the wear problem caused by circumferential micro-motion of the impeller in operation is eliminated in structure, so that the problem that the reliability and service life of the high-speed high-pressure large-flow fuel centrifugal pump are not high can be effectively solved. Meanwhile, considering the actual engineering application characteristics, the application also proposes a dismounting method of the integrated design fuel pump, and the fuel pump can be dismounted by using a simple tool, the dismounting process is simple, the constituent parts are not damaged, and the application prospect is wide.