1118 results about "Gear pump" patented technology

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 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 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 embodiment of the invention discloses a gear pump shell topological optimization method and device based on an SIMP variable density method and a gear pump shell. The method comprises the steps that a three-dimensional model of the gear pump shell is established; performing statics analysis on the three-dimensional model to obtain stress and deformation distribution under different working conditions; taking the mass minimization of the shell as an objective function, taking stress and deformation distribution as constraint conditions, taking material distribution as a design variable, and adopting an SIMP variable density method to construct a topological optimization model; solving the topological optimization model to obtain optimized material distribution; and performing geometric reconstruction on the three-dimensional model based on the material distribution to obtain a reconstructed three-dimensional model. According to the scheme, material distribution is optimized through the SIMP variable density method, on the premise that the structural strength is guaranteed, the mass of the gear pump shell is greatly reduced, the stress distribution of the optimized shell is more uniform, and the structural stability and deformation resistance of the shell under the high-pressure working condition are remarkably improved.

A front cover and a rear cover are fixedly installed and define a cavity, a driving gear shaft and a driven gear shaft are installed in the cavity, a first gear on the driving gear shaft is meshed with a second gear on the driven gear shaft, and the two gears and the inner wall of the cavity define an oil suction cavity and an oil discharge cavity. The two floating side plates are arranged on the two sides of the two gears in a penetrating mode through the driving gear shaft and the driven gear shaft respectively, an ear-shaped high-pressure oil groove and an unloading groove are formed in the face, close to the gears, of each floating side plate, the ear-shaped high-pressure oil grooves are close to one side of the oil discharge cavity, the unloading grooves are close to one side of the oil suction cavity, and the two ends of the unloading grooves are communicated with through holes of the floating side plates respectively. An ear-shaped groove is formed in the face, away from the gear, of each floating side plate, and a compensation area is formed on the floating side plates around the ear-shaped grooves. And a radial gap is formed between the peripheral edge of the floating side plate and the inner wall of the cavity. The comprehensive performance of high pressure, large displacement, low noise and high efficiency of the bevel gear pump is improved.

The invention discloses a gear pump cavitation state recognition method based on a physical information neural network, and belongs to the technical field of fluid mechanical state monitoring. Comprising test data acquisition, feature analysis, theoretical flow calculation and cavitation identification. The method comprises the following steps: acquiring gear pump driving wheel rotation angle and flow data under multiple working conditions, and analyzing flow pulsation, time-frequency spectrum and flow pulsation and rotation angle information coupling characteristics under different cavitation states; theoretical flow is calculated, and the cavitation state is divided according to the actual-theoretical flow pulsation rate ratio; constructing a physical information neural network through a cavitation-free state, and embedding theoretical flow into a loss function to enhance the physical interpretability of the model; and after training is completed, the features of different working conditions are input into a neural network to calculate the predicted flow, residual curve features between the predicted flow and the actual flow are obtained, and the residual curve features are input into a support vector machine to achieve efficient classification of non-cavitation, primary cavitation, critical cavitation and serious cavitation. The method is simple in step, convenient to use and high in recognition precision.

The invention belongs to the technical field of lifting tools, and particularly discloses a lifting device oil way system, a lifting device, a jack, a pressing machine and a crane. The oil way system of the lifting device comprises a lifting oil cylinder, an oil tank, a first oil inlet way, a second oil inlet way and an oil return pipeline, the first oil inlet path is an oil inlet path of the gear pump assembly; and the second oil inlet path is an oil inlet path of the plunger pump assembly. When the lifting device is in the no-load or low-pressure condition, the gear pump assembly can rapidly pump in much hydraulic oil with small pressure so that the lifting device can rapidly ascend or descend, the defect that in the prior art, the displacement speed of a hydraulic lifting pump is low under the no-load or low-pressure condition is overcome, and the user experience is improved; when the hydraulic lifting pump is in a high-pressure condition, the plunger pump assembly can pump high-pressure hydraulic oil into the lifting oil cylinder so that the lifting oil cylinder can ascend or descend slowly, the lifting device can move slowly, and the normal use requirement of a user is met.

The disclosure discloses an oil circuit system, a lifting device, an electric jack, a press, a crane, and a tire mounting / dismounting and transport apparatus. The oil circuit system comprises a lifting oil cylinder, the tank, the first oil feed line, the second oil feed line, the oil inlet / outlet line, the pressure relief line, the oil return line, the first valve, the second valve; the first oil feed line is the gear pump assembly oil feed line; and the second oil feed line is the plunger pump assembly oil feed line. Under no-load or low-pressure conditions of the lifting device, the gear pump assembly can quickly pump a larger volume of low-pressure hydraulic oil, enabling quick lifting or lowering of the lifting device. Under high-pressure conditions, the plunger pump assembly can quickly pump higher pressure hydraulic oil to the lifting oil cylinder to enable slow lifting or lowering.

The invention discloses a sweet material atomization test platform material liquid feeding device, a control system and a control method. The device comprises a fragrant sugar feed liquid storage unit and a pipeline feeding system, a feed liquid tank body of the fragrant sugar feed liquid storage unit is communicated with a pipeline of the pipeline feeding system; the pneumatic stop valve, the density sensor, the viscometer and the gear pump are sequentially mounted on a liquid conveying pipe at the lower end of the sweet material liquid storage unit, the gear pump is connected with the spray head through the liquid conveying pipe, a flow controller is arranged on the liquid conveying pipe, and a return pipe is arranged at the upper ends of the liquid conveying pipe and the sweet material liquid storage unit; the control system comprises a control module and an operation adjusting module, the control module and the operation adjusting module are configured in a touch screen computer, and the touch screen computer is internally provided with a high-speed camera data interface and connected with the high-speed camera to collect the droplet particle size distribution state; the automation level of the device is improved, the research and development period is shortened, and the device has the application potential of expanding to other tobacco processing and research fields.

The utility model relates to the technical field of agricultural machinery, in particular to a multifunctional adjustable pesticide applying and spraying robot for plants. The robot comprises a spraying part and an adjusting part, the spraying part is used for spraying pesticide, and the adjusting part is used for adjusting the height or displacement of the spraying part; the spraying part comprises a holder used for plane supporting. According to the multifunctional adjustable pesticide spraying robot for the plants, through cooperation of the holder, the spraying mechanism, the liquid conveying mechanism, the pesticide storage mechanism, the adjusting mechanism, the moving mechanism and the guiding mechanism, the length of the spraying mechanism can be adjusted according to the pesticide spraying area, pesticide spraying can be accurately controlled in multiple directions, and the pesticide spraying efficiency is improved. According to crops with different heights, the holder and the spraying mechanism are driven to perform height adjustment through work of the adjusting mechanism, unnecessary pollution is avoided, and economic benefits are improved; and by arranging the gear pump, the self-suction characteristic can be optimized, and the conveying efficiency can be improved.

The present invention relates to the technical field of sampling in deep sea. Disclosed are an apparatus for collecting overlying water and a particulate matter of a cold seep, and a method for using same. A gear pump is started to pump overlying water and a particulate matter into a heating device, the overlying water and the particulate matter are heated and then flow into a water inlet of a switcher through a connecting guide pipe, a water outlet switching device in a default state enables the water inlet of the switcher to be communicated with the second water outlet of the switcher, and the overlying water and the particulate matter enter a sample storage container, so that in-situ collection and storage of the overlying water and the particulate matter are realized; when collection and storage are finished, a push rod motor contracts, the first water outlet of the switcher is communicated, and the overlying water and the particulate matter enter a sample filtering container, so that in-situ separation of the overlying water and the particulate matter is realized. The apparatus of the present invention is complete in function, and the collection apparatus can stably and efficiently collect the overlying water and the particulate matter of the cold seep, and can perform accurate oil bath heating, in-situ storage and in-situ separation on the overlying water and the particulate matter.

In one embodiment, an oral irrigator including a reservoir, a tip fluidly connected to the reservoir, a motor having a drive shaft, and a pump. The pump includes a pump body including a pump inlet fluidly connected to the reservoir and a pump outlet fluidly connected to the tip, a spiral pinion gear including a plurality of pinion gear teeth that curve along their length, and a spiral driven gear including a plurality of driven gear teeth that mesh with the pinion gear teeth. The pump also may include a connecting rod eccentrically connected to the driven gear and a piston and received within the pump body. Movement of the drive shaft causes the pinion gear to rotate, causing the driven gear to rotate, translating the connecting rod and moving the piston laterally within the pump body to pull fluid from the reservoir and push the fluid to the tip.

The utility model relates to a top-mounted power device for a pure electric dust suppression vehicle. The top-mounted power device comprises a chassis, and a tank body, a fog gun, a fan motor, a lifting oil cylinder, a slewing mechanism and a power assembly which are positioned on the chassis, the fan motor is used for driving fan blades in the fog gun to rotate; the power assembly comprises a double-head output motor, a gear pump, a water pump and a two-in-one controller, the front end of the double-head output motor is directly connected with the water pump, the water pump supplies water for road surface watering operation and spraying dust falling operation, and the rear end of the double-head output motor is directly connected with the gear pump; and the two-in-one controller is used for controlling the operation of the double-end output motor and the fan motor. Through optimization of a control system and integration of a power structure, a two-in-one controller is adopted to control all operation actions of loading, a double-end output motor is adopted to directly connect and drive a water pump and a hydraulic pump, redundant motors and controllers are omitted, wire harnesses are reduced, the weight of a vehicle is reduced, the effective volume of a tank body is increased, and cost is saved.

The hydraulic pump gear trepanning and assembling device comprises a fastening machine body, a hydraulic pump shell is placed at the top of the fastening machine body, a driving shaft and a driven shaft are arranged on the two sides of the interior of the hydraulic pump shell correspondingly, the outer surfaces of the driving shaft and the driven shaft are sleeved with gears, and the outer surfaces of the driving shaft and the driven shaft are both sleeved with fastening inner rings; according to the scheme, the positioning fixing piece slides on the top of the supporting rail, the interval between the two gears is adjusted, in addition, by rotating the steering rotary knob, steering of the gears and meshing between the two gears are facilitated, fastening of gear bolts is achieved, and the positioning fixing piece is convenient to use. The gear is installed and fastened, noise is detected through the noise sensor, then the meshing condition of the gear is judged, the installation position of the gear is adjusted in time, transmission noise caused by poor installation precision of the gear of the gear pump is avoided, and then the service life of the gear is prolonged.

To provide a thermal decomposition device that separates gas in either a thermal decomposition part or a residue discharging part which discharges residue from the thermal decomposition part more securely, by which a gas volume coexisting with residue can be reduced on a post-stage of the residue discharging part.SOLUTION: A thermal decomposition device 1 comprises: a thermal decomposition part 20 which receives and thermally decomposes raw resin; a thermally decomposed gas separation part A which separates thermally decomposed gas generated by thermal decomposition in the thermal decomposition part 20; a gas treatment part 100 which treats thermally decomposed gas sent through the thermally decomposed gas separation part A; and a residue discharging part 30 which discharges undecomposed residue generated in the thermal decomposition part 20. The residue discharging part 30 includes a gear pump (positive displacement pump) 60 which absorbs and ejects undecomposed residue from an outlet part 23f of the thermal decomposition part 20.SELECTED DRAWING: Figure 2

To increase the maximum rotating speed of an internal gear pump.SOLUTION: An internal gear pump 1 includes: a gear set 7 including a pinion gear 3 and a ring gear 4; a housing 10; a fixed-type crescent 54; and an introduction path 8 having an inflow port 8a communicated with a suction part 11 of the housing 10 and an outflow port 8b that comes in contact with a traffic line FL1 of the addendum of the pinion gear 3 or a traffic line of the addendum of the ring gear 4 between the suction part and a discharge part 12, which causes working fluid flowing in from the inflow port to flow out to a tooth groove of the pinion gear or a tooth groove of the ring gear from the outflow port.SELECTED DRAWING: Figure 3

The invention discloses a testing device of an active and passive combined thermal protection system, and relates to the technical field of thermal protection of hypersonic aircrafts. The micro-channel cold plate comprises a micro-channel cold plate assembly, the top of the micro-channel cold plate assembly is fixedly connected with a passive thermal insulation layer, and a plurality of thermocouples are installed between the passive thermal insulation layer and the micro-channel cold plate assembly; a gear pump is installed at an inlet of the micro-channel cold plate assembly through a fuel oil pipeline, a fuel oil tank is installed at the inlet end of the gear pump, and an adjusting valve is installed at the outlet end of the gear pump. By adjusting the flow of the micro-channel cold plate in real time, the change of an external pneumatic thermal environment is well matched, so that efficient thermal protection of a large-area fuselage of a high-speed aircraft under long-time and high-heat-flow conditions is realized, and the consumption of a coolant is effectively reduced; and when the control module adjusts the flow, constant-pressure supply of the cooling working medium is achieved by changing the opening degree of the pressure adjusting valve, the working stability is improved, and the thermal failure problem of the active and passive thermal protection system is effectively avoided.

A kind of converging type pressure increasing gerotor pump.This application relates to the improvement of gerotor internal gear pump structure.By staggered compensation, avoid the flow pulsation caused by pump cavity volume change, and then realize the output pressure boost, and run smoothly.This application includes high pressure pump body, low pressure pump body and main shaft, the axis of outer rotor A and outer rotor B is arranged on one side of the main shaft, the axis of high pressure pump outer rotor is arranged on the other side of the main shaft, and the axis of outer rotor A is + alpha angle relative to horizontal line, the axis of outer rotor B is - alpha angle relative to horizontal line, alpha = 360 ° / 2N, N is the number of inner rotor teeth.This application adopts the ingenious design of rotor eccentric installation, realizes the pressure boost of pump, and the staggered compensation solves the flow pulsation caused by pump cavity volume change, provides stable flow for high pressure booster pump inlet.This application can be widely used in new energy vehicles, wind power, air conditioning, generator, industrial production, chemical industry, petroleum, metallurgy, water treatment and other fields, for conveying various liquids.

A hydraulic control device of a vacuum sweeper is characterized in that a fan servo pump is communicated with a fan motor, a front gear pump is communicated with a box body left and right lifting oil cylinder and a box body self-falling hydraulic control valve through a large-flow hydraulic control valve and a box body pressure maintaining one-way valve, and is communicated with a rolling brush left motor and a rolling brush right motor; the rear gear pump is communicated with a left and right side brush lifting hydraulic control valve, a rear door opening and closing hydraulic control valve, a right side brush motor hydraulic control valve, a main hydraulic control valve and a suction cup lifting hydraulic control valve; the left side brush lifting hydraulic control valve is communicated with a left side brush lifting oil cylinder; the rear door opening and closing hydraulic control valve is communicated with the rear door left and right opening and closing oil cylinders; a right brush motor hydraulic control valve is communicated with a right brush motor and a left brush one-way valve, the right brush motor is communicated with the left brush one-way valve and a left brush hydraulic control valve through the right brush one-way valve, and the left brush hydraulic control valve is communicated with a left brush motor. The right side brush lifting hydraulic control valve is communicated with a right side brush lifting oil cylinder; the sucker lifting hydraulic control valve is communicated with the sucker left lifting oil cylinder and the sucker right lifting oil cylinder.

The invention relates to a wastewater treatment device for a spraying assembly line. The wastewater treatment device comprises a box body, a filtering mechanism, an elastic part, a water adding pipe, a chemical adding mechanism and a driving mechanism, the dosing mechanism comprises a gear pump and a pipeline. According to the design, the gravity of wastewater is used as a power source to drive the filtering mechanism to slide down, the chemical adding mechanism to add chemicals and the water adding pipe to rotate; furthermore, accurate addition of chemical agents can be realized, and agent waste or insufficient reaction is avoided; continuous rotation of the water adding pipe and alternate operation of the multiple sliding channels form an assembly line type treatment process, and the treatment efficiency of the spraying wastewater and the operation stability of the device are remarkably improved.

The novel 20Kw aluminum alloy PTO gear box comprises a front box cover, an input shaft and a large gear, a rear box cover is installed on the outer side of the rear end of the front box cover, a vent valve is arranged in the upper end of the front box cover in a communicating mode, and an output shaft is installed in the upper end of the rear box cover; an input shaft is installed in the lower end of the front box cover in a penetrating mode, and the rear end of the input shaft is connected with a bearing. A large gear is installed on the outer side of the input shaft. The utility model belongs to the technical field of PTO gear boxes, and aims to solve the problems that in the prior art, a hydraulic system of a tractor is small in flow, a power output shaft and a gear pump are difficult to install, and a small-power gear box is insufficient in power, so that the flow of the gear pump connected with the small-power gear box is insufficient. The technical effect is that the problems that the flow of a hydraulic system of the tractor is small, the power output shaft and the gear pump are difficult to install, and the flow of the gear pump connected with a small-power gear box is insufficient due to insufficient power of the small-power gear box are effectively solved.

This utility model provides an internal gear pump with crescent-shaped blocks, including a pump body, a pump cover, an internal gear ring, and an external gear meshing with the internal gear ring. An outer crescent-shaped block and an inner crescent-shaped block are disposed between the internal gear ring and the external gear. The outer crescent-shaped block has an outer arc surface that can engage with multiple tooth tips of the internal gear ring. The inner crescent-shaped block is composed of a first inner crescent-shaped block and a second inner crescent-shaped block, both of which have inner arc surfaces that can engage with multiple tooth tips of the external gear. A positioning pin is installed between the first and second inner crescent-shaped blocks. A pin hole is provided at one end of each of the first and second inner crescent-shaped blocks near the positioning pin for installing a rotating pin. The first and second inner crescent-shaped blocks can rotate around the rotating pin. A notch is provided in the middle of the outer crescent-shaped block corresponding to the positions of the two positioning pins. Rubber rods and springs are provided between the outer crescent-shaped block and the first and second inner crescent-shaped blocks to compensate for the radial clearance between the inner and outer crescent-shaped blocks.

The utility model provides a gear pump with high sealing performance, and belongs to the technical field of gear pumps. The problem that in the prior art, a gear pump is insufficient in sealing performance is solved. The pump comprises a pump head and a pump shell, the pump head is connected with one side of the pump shell, a first cam rotor and a second cam rotor are arranged in the pump head, one side of the pump shell is fixedly connected with a pump side cover, a driving shaft and a driven shaft are arranged in the pump shell, and the driving shaft and the driven shaft are longitudinally arranged. The end of the driving shaft and the end of the driven shaft are fixedly sleeved with a driving gear and a driven gear respectively, the portion, on one side of the driving gear, of the driving shaft is fixedly sleeved with a first sealing ring, one end of the driving shaft extends out of the pump side cover, and the other end of the driving shaft is connected with a first cam rotor. A third sealing ring is fixedly sleeved on the driving shaft on one side of the first shaft connecting bearing, the third sealing ring is fixedly attached to the end face of the outer side of the pump shell, a second sealing ring is fixedly sleeved on the driven shaft on one side of the driven gear, the other end of the driven shaft extends into the pump head and is connected with a second cam rotor, and a second shaft connecting bearing is fixedly sleeved on the driven shaft. A fourth sealing ring is fixedly arranged on the driven shaft on one side of the second shaft connecting bearing in a sleeving mode and fixedly attached to the end face of the outer side of the pump shell. The sealing structure has the advantage of being good in sealing performance.

The utility model discloses a battery piece glue supplementing device. The device comprises a supporting assembly which is connected with an external fixing piece and is suspended; the optical detection assembly is fixedly arranged on the supporting assembly; the glue supplementing assembly comprises a glue injection barrel, a gear pump and a glue supplementing needle tube, the glue injection barrel is connected with the supporting assembly, the input end of the gear pump is connected with the glue injection barrel, the output end of the gear pump is connected with the glue supplementing needle tube, and the gear pump is used for conveying glue in the glue injection barrel to the glue supplementing needle tube; the glue supplementing assembly fixing support is connected with the supporting assembly, a gear pump and a glue injection barrel are borne above the glue supplementing assembly fixing support, a sliding block, a sliding block rail and a sliding block driving component are arranged below the glue supplementing assembly fixing support, and the sliding block is connected with a glue supplementing needle tube and the sliding block driving component; and the upper computer is in communication connection with the optical detection assembly and the sliding block driving component and is used for receiving the glue supplementing area of the battery piece transmitted by the optical detection assembly and controlling the sliding block driving component to move the glue supplementing needle tube to the glue supplementing area. According to the invention, the photo-sensitive resist which is frequently washed off in the developing process is supplemented, and the yield of the battery piece is improved.

The utility model discloses an online purification device for a hydraulic station, which relates to the technical field of purification of hydraulic stations, is used for solving the problems in the prior art and comprises a purification device frame, a water absorption filter, a precision filter and a control cabinet are arranged on the purification device frame, the water absorption filter is connected with an oil inlet pipe, and the precision filter is connected with an oil outlet pipe. The water absorption filter is connected with the precision filter through a pipeline, and the end of the oil inlet pipe is an oil inlet pipe opening; a variable frequency gear pump, an oil inlet sampling valve, an oil inlet window and a first pressure sensor are sequentially arranged on the oil inlet pipe from an oil inlet pipe opening to the water absorption filter; according to the scheme, online purification is conducted, the structural design is reasonable, the matching effect is good, the cleanliness and the water content of the purified oil product can be obviously improved, the oil product quality is guaranteed, meanwhile, energy consumption is reduced, manual guarding is not needed, the energy consumption is reduced, and the production efficiency is improved. And the labor intensity of workers is reduced.

The utility model relates to the technical field of non-pressure air doors, and discloses a coal mine non-pressure air door device which comprises a door frame, a left door and a right door are rotatably arranged in the door frame, two mounting grooves are formed in the sides, away from each other, of the left door and the right door respectively, two rotating shafts are fixed to the two sides of the inner wall of the door frame respectively, and the rotating shafts and the interiors of the mounting grooves are rotatably arranged. A lubricating structure is arranged between the left door and the right door. Through the arrangement of the lubricating structure, after the gear pump extracts lubricating oil in the oil storage tank, the lubricating oil is conveyed into the shaft shell through the conveying pipe and the connecting pipe, when the left door and the right door rotate in an opening and closing mode, friction is generated between the balls and the rotating shaft, the lubricating oil in the shaft shell is attached to the surfaces of the balls, and the lubricating oil is transmitted to the surface of the rotating shaft through rotation; by means of the lubricating mode, the maintenance workload and the maintenance cost are greatly reduced, meanwhile, the operation smoothness of the air door is guaranteed, the mine ventilation management efficiency is improved, and the operation safety is further improved.

This disclosure provides a process. In one embodiment, the process includes providing an apparatus. The apparatus includes (A) a passage having side walls having an interior for receiving a first flowstream (FFS1), and the passage having an inlet end and an outlet end on the opposite side. The apparatus includes (B) a gear pump assembly. The gear pump assembly includes (i) a housing, (ii) a gear chamber within the housing, (iii) an inlet for fluid communication of the passage with the gear chamber, (iv) a plurality of meshing gears mounted to rotate within the gear chamber, the gears having teeth that engage with each other within the chamber, and each gear having a pivot axis, and (v) an outlet for fluid communication with the gear chamber. The apparatus includes (C) one or more injectors upstream of the gear pump assembly for adding a second fluid to the first flowstream (FFS1). Each injector is located in a side wall. The process includes introducing the second fluid into the FFS1 from each injector located in its respective side wall, and supplying the FFS1 and the second fluid into the inlet. This process includes mixing a second fluid with FFS1 in a gear chamber to form a mixed fluid flow stream (mFFS), and discharging the mFFS from an outlet.

This invention relates to the field of transformer technology and discloses a transformer with a rapid oil drainage structure, including a transformer body. An oil tank groove is formed on the inner wall of the transformer body. A support frame is fixedly mounted at the bottom of the transformer body, and an auxiliary frame is fixedly mounted at the bottom of the support frame. A motor is fixedly mounted on the inner wall of the auxiliary frame, and a transmission rod is fixedly sleeved on the output shaft of the motor. An oil inlet plate is fixedly mounted on the top of the transmission rod, and the bottom of the oil inlet plate is rotatably connected to the bottom of the inner wall of the oil tank groove. A guide groove is formed on the inner wall of the oil inlet plate. By employing a three-layer oil drainage pipeline consisting of an upper pressure-sensing electric valve, a middle electromagnetic ball valve with a throttle valve, and a lower rotating oil inlet plate and a one-way gear pump, synchronous oil flow can be achieved in emergency scenarios, improving the oil drainage efficiency compared to traditional structures. The lower rotating oil inlet plate, combined with a silicone scraper, can scrape away deposited impurities at the bottom of the oil tank, and the negative pressure suction of the one-way gear pump reduces the residual oil rate.

The utility model provides an active liquid supply foam production device which comprises a shell, and an accommodating space is formed in the shell; the driving bubble making gear and the driven bubble making gear are meshed with each other and are rotationally arranged in the accommodating space; a suction cavity is formed in the gear disengagement side in the containing space, and a discharge cavity is formed in the gear engagement side in the containing space. The outer wall of the shell is provided with a foam output port communicated with the discharge chamber and an air inlet communicated with the suction chamber; the active liquid supply device is communicated with the accommodating space, and the mixed liquid is actively fed into the accommodating space through the active liquid supply device; and the output end of the driving device is connected with the driving foaming gear. The active liquid supply device has the advantages that the active liquid supply device can be used for actively supplying liquid to the gear pump for producing foam, so that the liquid supply requirement of the gear pump is met, mixed liquid can be prepared in real time, and the use effect is ensured.

An oil pump for a motor vehicle, in particular an electrically operated gear pump, contains a pump housing that is closed relative to an end side by a housing cover, a shaft which extends in a longitudinal direction and to which a pump wheel is secured. The shaft is mounted on a first bearing and on a second bearing on both sides of the pump wheel. A pressure chamber is formed on a pressure side, and a lubricant channel leads from the pressure chamber to the shaft in a region of the first bearing for the lubrication of the two bearings. Between the shaft and the pump wheel secured to the shaft, at least one longitudinal channel also leads along the pump wheel to the second bearing.