2420 results about "Gear pump" patented technology

The invention discloses an energy-saving gear pump with an intelligent flow adjusting function, and relates to the technical field of gear pumps. Comprising a machine base, a front cover and a rear cover are arranged on the left side and the right side of the machine base respectively, a liquid inlet and a liquid outlet are formed in the front side and the rear side of the machine base respectively, a driving gear and a driven gear meshed with each other are installed in the machine base, and floating side plates are arranged on the front cover and the rear cover; a conical disc is rotatably mounted on the inner side of the liquid inlet; two groups of coils are mounted on the outer side of the liquid outlet; two groups of electrodes are arranged in the liquid outlet; a sieve plate is mounted on one sides of the two groups of electrodes; liquid cuts magnetic induction lines in the magnetic field range of the two sets of coils, induced electromotive force is generated on the two sets of electrodes, the control system processes and calculates the induced electromotive force, then flow data are obtained, and intelligent flow adjustment of the gear pump is achieved.

The invention discloses an EHA drive control system three-closed-loop control system and a dynamic hysteresis compensation method. The technical problems that an existing electro-hydrostatic actuator is large in hydraulic hysteresis error, poor in dynamic response and insufficient in environmental adaptability are solved. The method comprises a three-stage control structure of a position control loop, a speed control loop and a current control loop, the position control loop introduces load disturbance feed-forward compensation based on a state observer, the speed control loop adopts an adaptive sliding mode control strategy, the current control loop executes a decoupling vector control algorithm, and the load disturbance feed-forward compensation is realized. And a dynamic hysteresis compensation model based on historical input and disturbance estimation is established in the controller. According to the system, the servo motor, the gear pump, the hydraulic cylinder and the sensor module are integrated into an integrated drive control structure, and the effects of improving the control precision, reducing the response time delay and correcting the hydraulic hysteresis error are achieved.

The invention discloses an aviation fuel gear pump performance prediction method based on lumped parameters. The method comprises the following steps: 1, dividing internal control volumes of the gear pump and analyzing communication relations of the control volumes; 2, establishing a gear pump dynamic mathematical model by combining the internal pressure and flow characteristics of the gear pump and the geometric structure characteristics of the gear pump; step 3, establishing a gear pump 3D model based on UG and measuring related data, storing the data in a 1D table as the input of a gear pump Amesim lumped parameter model, and simulating the change relation of the gear cavity volume and the area of each throttling channel along with the rotation of the gear pump; and 4, establishing a gear pump lumped parameter performance model based on Amesim, inputting data according to oil liquid characteristics and the gear pump 3D model, setting corresponding parameters, performing gear pump multi-working-condition performance simulation, and analyzing and predicting pressure characteristics and flow characteristics of the gear pump under different working conditions. According to the method, a gear pump lumped parameter performance model is built based on Amesim modeling software and UG geometric modeling software, so that the internal flow pressure characteristic and the output pressure flow characteristic of the gear pump are predicted.

The invention provides a split type shielding electric gear pump and a cooling method thereof, and can solve the problems that a motor and a gear pump of an existing integral type shielding electric gear pump cannot be independently assembled, the motor and the gear pump cannot be integrally decomposed, so that the gear pump is inconvenient to independently carry out a running-in test, and the gear pump leaks. The electric gear pump comprises a gear pump body and a motor, the gear pump body comprises a pump shell and a pump shaft, the motor comprises a machine shell, a stator and a rotor, one end of the pump shell is connected with one end of the machine shell through a sealing end face, air gaps are formed among the rotor, the stator and the machine shell, the input end of the pump shaft extends out of the pump shell and extends into the machine shell, and a leakage gap is formed between the input end of the pump shaft and the pump shell. The input end of the pump shaft is coaxially connected with one end of the rotor, the rotor is provided with an axially-through motor backflow channel, the pump shaft is provided with an axially-through gear pump backflow channel, and the space in the pump shell, the leakage gap, the air gap, the motor backflow channel and the gear pump backflow channel form a working medium cooling loop.

The invention relates to the technical field of tooth crest gap leakage, discloses a gear pump, and aims to solve the problem that the performance, the operation efficiency and the operation stability of the gear pump are reduced due to leakage jet flow caused by a relatively large tooth crest gap in the gear pump. A driving gear and a driven gear of the gear pump are mounted in a pump body, are in meshed connection and are used for driving fluid to flow in the pump body. And at least one of the driving gear and the driven gear is provided with a jet flow channel at the gear teeth. The jet flow channel is provided with a flow inlet and a jet flow opening which communicate with each other, and when the gear teeth rotate towards the high-pressure side, the flow inlet is formed in the high-pressure side of the gear teeth and used for enabling part of fluid to enter the jet flow channel from the flow inlet and be sprayed out from the jet flow opening so as to increase the drainage resistance of the tooth top gap. The spontaneous jet flow jetted through the jet flow channel and the leakage jet flow of the tooth crest gap form convection flow, so that the flowing speed of the leakage jet flow is reduced, the leakage flow resistance is increased, and the performance, the operation efficiency and the operation stability of the gear pump are improved.

The invention relates to the technical field of remanufacturing, in particular to a 1Cr17Ni3 gear pump casting shell end face superficial crack damage repairing method which comprises the steps that cleaning is conducted, and defect positions are determined; marking the defect position, then extending in a polyline form to form two rings, and connecting the two rings by using a line segment; polishing to form an outer ring groove, an inner ring groove and a line segment groove for connecting the inner ring and the outer ring; demagnetization is carried out; carrying out laser cladding repair; liquid nitrogen treatment; carrying out cladding repair and liquid nitrogen treatment on the test block to verify the hardness performance; the end face subjected to cladding repair is polished; and cleaning and carrying out penetrant flaw detection, and if no defect exists, successfully repairing. Local repair of a small area of the end face is avoided, local deformation is avoided, and the sealing performance is enhanced; the restoration quality deterioration caused by heat accumulation is avoided; the equal-hardness cladding repair is realized; the problem that after the shell has magnetism, the repairing quality is reduced due to the fact that powder adheres to the end face continuously in the cladding process is solved.

The utility model discloses a liquid soap machine which comprises a liquid soap bottle, and a liquid storage cavity is formed in the liquid soap bottle. The lower shell is arranged below the liquid soap bottle; the liquid outlet assembly is arranged in the lower shell and comprises a driving pump, a liquid outlet nozzle and a liquid outlet pipe, the driving pump is connected with the liquid storage cavity, the liquid outlet nozzle is connected with the driving pump through the liquid outlet pipe, and the liquid outlet nozzle is arranged downwards; the control assembly comprises an inductor, a wire and a controller; wherein the driving pump is a gear pump, an outlet of the driving pump is provided with an electromagnetic valve, the electromagnetic valve is connected with the controller, and when the controller controls the driving pump to act, the electromagnetic valve acts to open the outlet of the driving pump, so that the liquid soap can flow out through the liquid outlet pipe and the liquid outlet nozzle. According to the soap dispenser, due to the fact that the combination of the gear pump and the electromagnetic valve is adopted, the size of the soap dispenser is effectively reduced, the cost is reduced, meanwhile, continuous liquid discharging can be achieved, the situation that liquid drops when the soap dispenser does not work is avoided, and the use experience is improved.

The utility model discloses a positive displacement gear lubricating pump which has the advantages of being simple in structure and capable of effectively reducing installation and machining requirements. The device comprises a driving motor, a pump seat, a mounting seat, an oil tank, a gear pump, an oil suction pipe and an oil outlet pipe, the pump seat is mounted above the oil tank and seals the oil tank, the mounting seat is mounted on the pump seat, the driving motor and the gear pump are mounted above and below the mounting seat respectively, and the driving motor is connected with the gear pump and drives the gear pump to operate. The gear pump is arranged in the oil tank, the first end of the oil suction pipe is communicated with an oil inlet of the gear pump, the second end of the oil suction pipe extends to the bottom of an inner cavity of the oil tank, and the first end of the oil outlet pipe is communicated with an oil outlet of the gear pump.

The invention discloses an integrated servo motor pump based on an internal gear pump, and relates to the field of integrated servo motor pumps, the integrated servo motor pump comprises a shell, an end cover, a servo motor, a bidirectional internal gear pump and a rotating speed sensor, the servo motor and the bidirectional internal gear pump are both arranged in the shell, one end of a motor shaft of the servo motor is connected with a pump shaft of the bidirectional internal gear pump through a spline, so that the motor shaft can drive the pump shaft to rotate together; the end cover is connected to one end of the shell, the rotating speed sensor is connected to the end cover, and a sensor shaft of the rotating speed sensor penetrates through the end cover to be in interference connection with the other end of the motor shaft. And the targets of low noise, high power density and large-range dynamic regulation of the rotating speed are achieved.

The invention provides a low-vibration internal gear pump which comprises a pump body, an outer gear and an inner gear and further comprises a crescent plate assembly, the crescent plate assembly comprises a main crescent plate and an auxiliary crescent plate, and two first damping groove units are formed in the inner arc section of the main crescent plate; the width of the first damping groove unit is gradually reduced from the end of the main crescent plate to the middle, two second damping groove units are formed in the outer arc section of the auxiliary crescent plate, and the width of the second damping groove units is gradually reduced from the end of the auxiliary crescent plate to the middle. In this way, oil in the oil inlet cavity firstly passes through the damping groove units to achieve pre-boosting when entering the tooth tip oil cavity, and firstly passes through the damping groove units on the other side to achieve pre-depressurization before the oil gets close to the oil outlet cavity and goes out, so that the pressure of the oil is smoothly transited when the oil enters and goes out of the tooth tip oil cavity, and the situation of fluctuation caused by sudden pressure change is reduced; therefore, the vibration and noise of the gear pump are reduced, the stress condition of the crescent plate is improved, and the service life is prolonged.

The invention discloses a gear defect detection system and method based on gear pump machining, and relates to the technical field of nondestructive testing. The gear defect detection platform is in communication connection with a magnetization preprocessing module, a magnetic signal acquisition module, a magnetic signal processing module, a gear defect analysis module and a defect visual labeling module, and all the modules are in electric signal connection; and the magnetization preprocessing module is used for customizing a magnetization scheme according to the material and structural characteristics of the gear. According to the method, the signal separation and feature extraction technology is adopted, independent features of different defect types can be effectively extracted from magnetic signals, the defect classification model is constructed, then surface damage, geometric deformation and fatigue cracks are accurately distinguished, quantitative analysis is conducted on the severity of the defects, the defect classification accuracy is improved, and the defect classification efficiency is improved. And classification errors caused by overlapping of magnetic signals in a traditional method are avoided.

The invention discloses a hydraulic gear pump assembly detection system, which relates to the field of hydraulic gear pump assembly detection. The hydraulic gear pump assembly detection system comprises: a data acquisition subsystem for acquiring component angle data, component distance data, and component surface data of the assembled hydraulic gear pump; a data analysis subsystem for analyzing the component angle data, component distance data, and component surface data of the assembled hydraulic gear pump respectively to obtain the angle detection index, linear size detection index, and surface detection index of the assembled hydraulic gear pump. The invention can comprehensively evaluate the assembly quality of the hydraulic gear pump by integrating multiple detection modules and technical means, which is not limited to a single quality index, but covers multiple aspects such as angle, size, and surface, thereby significantly improving the accuracy and systematicness of the detection, and ensuring that each assembly link meets high quality standards.

A pure electric mining dump truck hydraulic system comprises a hydraulic steering system and a hydraulic lifting system, and the hydraulic steering system comprises a steering plunger pump, an energy accumulator, a multi-way valve assembly, a steering valve, a two-way unloading valve, a steering cylinder and an electromagnetic reversing valve; the lifting system comprises a gear pump, an overflow valve, a lifting valve, an oil suction filter, a lifting control handle, a pilot valve block, a bounce valve, a lifting cylinder and a lifting hydraulic oil tank. And the steering plunger pump and the lifting plunger pump are driven by a double-shaft extension motor. A single motor can drive the two hydraulic systems to operate stably, space is saved, meanwhile, jamming and preparation time of the two systems during operation and switching are shortened, energy is saved, and efficiency is improved.

The invention relates to the related technical field of torque detection, in particular to a gear pump output torque fluctuation online detection method and system.The method comprises the steps that operating parameters such as gear pump vibration acceleration are collected, threshold values such as the pressure change rate and a gear rotation vector are combined to draw up a characteristic matrix, and a torque pulsation mode is recognized; and configuring a fluctuation stability factor correlation model weight, determining a torque fluctuation grade and performing graded reminding. The method solves the technical problems that the characteristic change of early faults such as gear wear and cavitation is not sensitive, the torque fluctuation cause cannot be determined, the fault diagnosis is lack of depth, and the risk of sudden equipment faults is increased, realizes the accurate capture of a complex fluctuation mode, and determines the fault diagnosis accuracy according to a closed volume pressure change rate threshold and an unloading groove cavitation critical value. The technical effects that the gear pump closed volume pressure change, the unloading groove cavitation effect and the mechanical vibration cooperative influence are quantified, the torque fluctuation grade is determined through early-stage accurate recognition of faults, and graded reminding is conducted are achieved.

The invention relates to the technical field of logistics warehouse storage equipment, in particular to a speed reduction control method for a high-speed motor driven hydraulic system, which comprises the following steps: S1, the output torque of a high-speed motor is transmitted to a gear pump through a motor shaft, a planetary reducer and a planet carrier in sequence to drive the gear pump to work; s2, acquiring a three-phase current instantaneous signal and a direct current bus voltage signal, and performing preprocessing and frequency spectrum conversion to determine a current frequency spectrum; s3, in the current frequency spectrum, extracting an energy value in a preset frequency band with the meshing frequency and harmonic waves of the planetary gear as the center, and calculating to obtain a disturbance characterization value of the planetary gear; s4, determining a torque smooth adjustment coefficient according to the planet wheel disturbance characterization value; and S5, dynamically adjusting a dynamic response parameter of a torque control ring of the high-speed motor according to the torque smooth adjustment coefficient. The problems that in the prior art, a high-rotating-speed motor and a hydraulic pump are not matched in rotating speed, and mechanical disturbance is difficult to restrain are solved.

The invention discloses a glue injection gear pump for intelligent industrial production, and belongs to the technical field of gear pumps, a first linkage wheel and a second linkage wheel which are meshed with each other are rotatably arranged in a first pump body and a second pump body, a meshing bin is arranged on the outer wall of a side cover, and a gear ring is fixedly mounted on the inner wall of the meshing bin; a walking gear meshed with the gear ring is movably mounted on the swing arm; lifting arms are movably arranged at the top of the walking gear, a linkage arm is installed between the outer sides of the lifting arms, and a movable discharging nozzle attached to the inner wall of the fixed discharging nozzle is arranged in the middle of the linkage arm; a notch part is further formed in the bottom of the side cover, and power bins are further arranged at the bottoms of the first pump body and the second pump body. When the upper rotating shaft drives the linkage shaft to rotate, the walking gear can rotate along the gear ring, and at the moment, the lifting arm can drive the movable discharging nozzle to do reciprocating motion along the fixed discharging nozzle. The scraping part can scrape the inner wall of the fixed discharging nozzle in a reciprocating mode, glue residue is avoided, and the service life of the glue injection gear pump is prolonged through the design.

The invention discloses a blade system of a wind generating set, and belongs to the field of wind power generation systems. A hydraulic system drives a coaxial gear rigidly connected with the root of a main blade to provide power for a gear pump, hydraulic oil flow and speed are controlled by a hydraulic control element, and the hydraulic oil penetrates through the center of a main shaft through a double-channel rotary joint and reaches a blade motor at the top end of the main blade through an oil way laid on the inner surface of the main blade; and the blade motor drives the secondary blade module to rotate to form closed-loop energy supply. At low wind speed, the secondary blade module and the main blade rotate in the same direction, so that the aerodynamic efficiency is enhanced; at high wind speed, the secondary blade module and the main blade rotate reversely, reverse lift force is generated, and the tip bending moment of the blade is reduced. The core of the invention lies in that pneumatic coupling and hydraulic supply technologies are combined, so that not only is the application range of equipment to wind speed change widened, but also the utilization rate of wind energy is obviously improved. Revolutionary progress is brought to the field of wind power generation, and wide application prospects and market potential are shown.

The utility model relates to the technical field of material conveying, in particular to a passive hydraulic automatic deviation rectifying device of a horizontal turning belt conveyor, which comprises a conveyor fixing frame, a carrier roller support is correspondingly hinged to the middle of the top of the conveyor fixing frame, and a carrier roller component used for supporting a belt is arranged on the top surface of the carrier roller support. The conveyor fixing frame is provided with a hydraulic push rod used for driving the carrier roller support to rotate. Roller gear pumps are arranged at the positions, corresponding to the inner side and the outer side of the belt, of the conveyor fixing frame so that the hydraulic push rods can be driven to stretch or retract under the effect of the belt, and then the inner ends or the outer ends of the carrier roller supports can be lifted. When the conveying belt deviates, the roller gear pumps on the corresponding sides can drive the hydraulic push rods to work, so that the carrier roller supports on the corresponding sides are lifted, the conveying belt returns under the action of gravity, and the purpose of automatic deviation correction is achieved.

The invention relates to the technical field of energy storage and heat dissipation, and discloses a centralized energy storage power station heat dissipation system. A data acquisition module of the system obtains historical operation data at different altitudes and generates a historical cooling parameter set; a feature analysis module extracts features from the features to obtain a historical feature parameter set, and a trend change feature matrix is established according to the historical feature parameter set; the pressure adjusting module constructs a pressure control space based on the matrix, and determines a feature early warning index set by calculating the parameter aggregation degree of historical abnormal events; the heat dissipation execution module extracts real-time characteristic parameters to establish state vectors, and calculates the position deviation degree between the state vectors and the early warning index set to generate real-time pressure regulation factors. The pressure adjusting module generates a pressure control model in combination with real-time adjusting factors, historical characteristic parameters and a trend matrix and outputs cooperative control parameters of the variable-frequency screw pump and the gear pump, precise adjustment of the working pressure of the cooling liquid is achieved, and efficient and stable operation of the energy storage power station is guaranteed.

The invention relates to the technical field of rubber processing, in particular to a gear pump driven rubber filter which comprises a machine base, a control box and a machine body, the control box and the machine body are both installed on the upper surface of the machine base, the machine body is kept horizontal, and the gear pump is fixedly connected to the left side of the machine body; the gear pump is electrically connected with the control box and drives the screw rod in the machine body to rotate; the discharging device is installed on the top of the machine body and electrically connected with the control box. The filtering mechanism is fixedly connected to the right end of the machine body; the supporting seat is fixedly connected to the right end of the machine body, a runner is formed in the supporting seat, and a mounting groove is formed in the right side of an inner cavity of the supporting seat. The device has an automatic rubber cooling function, prevents the rubber from coking due to too high temperature, prevents the rubber from deteriorating, protects the filter screen, monitors the permeability of the filter screen, enables the filter screen to be cleaned in time, and improves the rubber filtering efficiency.

The invention discloses a novel mining high-power fracturing pump station system which comprises a clear water tank, a booster pump set, a fracturing pump device, a lubrication unloading device, a stop valve and a flow sensor, the clear water tank is connected with the booster pump set through a pipeline, and the fracturing pump device comprises a plunger pump and a first gear pump; the lubrication unloading device comprises an unloading valve, a lubrication valve block, a plate cooler and a second gear pump; a liquid inlet of the plunger pump is connected with the liquid suction pipe, a liquid inlet pipe is connected with the booster pump set, a liquid outlet of the plunger pump is connected with a first high-pressure pipe, the first high-pressure pipe is communicated to the unloading valve, a liquid outlet end of the unloading valve is connected with a second high-pressure pipe, the second high-pressure pipe is provided with a stop valve, and the flow sensor is arranged on the second high-pressure pipe. The unloading valve is arranged, the unloading valve can be remotely controlled through a program to rapidly release loads, and the safety performance of the system is greatly improved; safety pressure relief of the fracturing pipeline can be controlled by controlling the slow stop valve.

The invention provides a bidirectional internal gear pump with a clearance compensation function, the bidirectional internal gear pump comprises a gear pump body, a gear pair, a radial clearance compensation assembly and an axial clearance compensation assembly, the gear pair comprises an internal gear and an external gear, and the radial clearance compensation assembly comprises a main crescent plate and two auxiliary crescent plates; the outer arc section of the main crescent-shaped plate is convexly provided with a protrusion, the inner arc section of each auxiliary crescent-shaped plate is concavely provided with a groove, the protrusion is connected into the groove, and the axial clearance compensation assembly comprises two floating side plates which are oppositely arranged on the two sides of the gear pair in the axial direction. In this way, when oil enters, stress high-pressure areas of the main crescent plate and the auxiliary crescent plate are opened to be tightly attached to tooth crests of the inner gear and tooth crests of the outer gear respectively, the low-pressure side of the auxiliary crescent plate gets close and is tightly attached to the protrusion of the main crescent plate for extrusion, and therefore the radial clearance compensation effect is achieved, and the floating side plate is tightly attached to the end face of the gear pair under back pressure to form axial clearance compensation so as to reduce the axial clearance. Therefore, the bidirectional clearance compensation effect is achieved, and the service life of the gear pump is prolonged.

The invention relates to an automatic gearbox executing mechanism parameter optimization design method based on sensitivity analysis and a genetic algorithm, and belongs to the technical field of engineering machinery design. The method comprises the following steps: establishing dynamical models of an automatic gearbox actuating mechanism considering electromechanical hydraulic characteristics, including dynamical models of a gear pump, a proportional electromagnetic valve and a clutch; utilizing a sensitivity analysis method to explore the influence degree of internal and external parameters on the pressure and efficiency of the hydraulic system, and determining main optimization variables of the hydraulic system; designing a controller to track the pressure of a hydraulic system according to the required oil pressure of each electromagnetic valve and a clutch in a gear shifting control strategy; the gear shifting impact degree and the sliding friction work of a friction pair are used as optimization targets, the gear shifting time is used as a constraint condition, a genetic algorithm is used for optimizing main optimization variables of a hydraulic system within the range allowed by parameters, and gear shifting quality improvement and forward optimization design of an automatic gearbox executing mechanism are completed.

The utility model belongs to the field of sheet jelly slurry spreading, and particularly relates to a stirring structure of a sheet jelly slurry spreading mechanism based on a gear pump, which comprises a gear pump 2, a slurry tank 3 arranged at a feed port of the gear pump 2 and a stirring mechanism 4, and the stirring mechanism 4 extends into a swinging deflector rod 46 into the slurry tank 3 for stirring. And the stirring mechanism extends a swinging deflector rod into the slurry tank for stirring, so that slurry at the periphery of the feeding hole is kept movable and not condensed on the plate surface, and meanwhile, a good inward slurry feeding effect is kept.

The utility model relates to the technical field of liquid pressure control, and discloses a positive and negative pressure device for plant in-vitro culture, which comprises a gear pump, a liquid storage tank, a bubble remover, an electric control pressure regulating part, a liquid stirring part and a plant fixing part, and the electric control pressure regulating part comprises a first water flow regulating electromagnetic valve, a second water flow regulating electromagnetic valve and a hydraulic pressure gauge. The plant fixing part is provided with a flow guide pipe connecting pipe, a connecting pipe, a metal cable tie A and a metal cable tie B; according to the positive and negative pressure device for plant in-vitro culture, a nutrient solution is stirred through the liquid stirring part, the nutrient solution is conveyed through the gear pump, the water pressure in the flow guide pipe is controlled and adjusted through the electric control pressure adjusting part, and bubbles in the nutrient solution are filtered through the bubble remover. Therefore, the problems that an existing plant in-vitro culture device cannot culture plants with a nutrient solution under the same water pressure in the plants, the survival time of the plants is short, and leaves are prone to withering are solved.

The invention discloses a special gear pump body finish machining device in the technical field of gear pump machining, and the special gear pump body finish machining device comprises a workbench, a feeding and discharging assembly and a movable positioning mechanism, the movable positioning mechanism comprises a fixing frame, a moving assembly, a rotating shaft, an overturning shaft and a positioning assembly, and a machining groove and a grinding assembly are arranged in the middle of the top of the workbench; the feeding and discharging assembly is arranged on the front side of the workbench so that feeding and discharging operation can be conveniently conducted on pump bodies, simultaneous positioning of the multiple pump bodies is achieved through the structure of the positioning assembly, and the machining number of the pump bodies is increased; the positioning assembly and the pump body are driven by the motor and the rotating frame to turn over around the rotating shaft, operation such as feeding and discharging is facilitated, the positioning assembly and the pump body are turned over up and down through the switching assembly and other structures, and therefore the two ends of the pump body can be machined. And the polishing assembly is arranged in the machining groove, so that the two ends of the pump body can be polished when the pump body passes through the polishing assembly before and after overturning.

The utility model belongs to the field of sheet jelly slurry spreading, and particularly relates to a sheet jelly slurry spreading mechanism based on a gear pump, which comprises a gear pump 2, and a discharge plate 6 matched with a gear in the gear pump 2 in width is arranged at a discharge port of the gear pump 2. The flow is only related to the rotating speed of the gear pump and is easier to control, and the discharge plate matched with the width of the gear in the gear pump is arranged, so that the uniformity degree of the more accurately quantified slurry is kept after discharging, the thickness of the produced sheet jelly in the width direction is more uniform, and the more accurate quantification effect is achieved; and a pulp outlet mode is changed into a mode of naturally sliding down from the discharge hole for forming.

The embodiment of the invention provides a gear pump filling piece, a gear pump, a suspension assembly and a vehicle. The gear pump filling piece comprises a first crescent plate, the first crescent plate comprises a first connecting part, a first main crescent plate used for abutting against the outer side of a gear and a first auxiliary crescent plate used for abutting against the inner side of a gear ring, and the first connecting part is arranged between the first main crescent plate and the first auxiliary crescent plate; through the arrangement of the first connecting part, the first main crescent plate and the first auxiliary crescent plate, the stress of the first crescent plate is effectively balanced, the pressure of the contact surface of the first auxiliary crescent plate and the gear ring is remarkably reduced, and the risk that the first auxiliary crescent plate is abraded is reduced.

The invention discloses an aviation fuel gear pump confidence degree evaluation method based on the Bayesian theory. The method comprises the following steps: step 1, firstly, determining Weibull distribution as a theoretical basis of reliability modeling according to the life characteristics of the aviation fuel gear pump, and providing probability model support for subsequent analysis; 2, on the basis of Weibull distribution, adopting a Bayesian method to fuse historical data and field test data, and achieving point estimation and interval estimation of shape parameters and scale parameters of the aviation fuel gear pump; and step 3, based on the point estimation and the interval estimation, constructing an MTBF confidence interval and verifying by adopting a Bootstrap method, and finally completing quantitative evaluation of the reliability confidence of the aviation fuel gear pump. According to the method, the specific problems of low evaluation precision, poor confidence interval reliability and insufficient historical data utilization rate of a traditional method under the small sample condition are solved.

The invention discloses an aviation fuel gear pump service life estimation method based on gear failure, and relates to the technical field of gear pump service life estimation. Combining the smoke scattering spectrum, the gear material parameters and the Hertz contact theory to calculate the dynamic contact stress of the gear surface, and constructing a multi-physical field data set; extracting a polarization degree, a polarization angle, a stress change rate and a smoke concentration variable quantity from the multi-physical field data set to generate a node feature vector sequence; and fusing the dynamic graph embedded vector with the corrected Hertz contact item and Archard wear item to construct a physical constraint neural differential equation. According to the method, a corrected Hertz contact item and an Archard wear item are rigidly embedded into a neural differential equation, and a state evolution trajectory is iteratively generated by using a Dorman-Prince solver, so that the model is ensured to conform to a data driving rule and a physical conservation constraint at the same time.