293 results about "Shunt valve" patented technology

A hydraulic drive apparatus includes a hydraulic pump that discharges a working fluid; a flow dividing valve that divides a pump passage connected to the hydraulic pump into first and second passages, and changes an opening degree of each passage according to a signal that is input to the flow dividing valve; a travel system hydraulic circuit that is connected to the first passage and controls a flow of the working fluid to a travel motor; a loading system hydraulic circuit that is connected to the second passage and controls a flow of the working fluid to a loading actuator; a pressure sensor that detects a pressure supplied to the travel motor; and a control device that controls, by outputting the signal to the flow dividing valve, the opening degree of the first and second passages according to the pressure detected by the pressure sensor.

The invention discloses a plug-in mounting type priority diverter valve and a hydraulic system. The plug-in mounting type priority diverter valve comprises a valve body, a valve sleeve assembly, a plug assembly, a spring seat, a spring and a diverter valve element assembly. An oil inlet, a first working oil port, a second working oil port and a feedback oil port are formed in the valve body; the valve sleeve assembly comprises a valve sleeve; the flow dividing valve element assembly comprises a flow dividing valve element and a variable damper, four axial throttling grooves are formed in the circumferential direction of the flow dividing valve element, a flow guiding annular groove is formed in the circumferential surface of the rear portion of the flow dividing valve element, a radial through hole is formed in the flow guiding annular groove, and an axial hole is formed in the surface of the rear end of the flow dividing valve element; the rear end of the flow dividing valve element and the inner side wall of the valve body form a pilot control cavity. According to the multi-way valve, the problem of system complexity caused by an independent priority valve is effectively solved, the priority shunting function is integrated in the multi-way valve, and external pipeline connection is reduced. The plug-in mounting type valve sleeve assembly achieves flow channel machining and valve body separation, machining difficulty is reduced, and production efficiency is improved.

The invention relates to the technical field of efficient clean energy, and discloses a fuel Wobbe number stabilizing system for a chemical regenerative gas turbine and a control method, and the system comprises an exhaust bypass mixing regulation and control component which comprises a regulation and control module, a monitoring module and a control module; the regulation and control module comprises a diverter valve and a bypass flow regulating valve, the inlet end of the diverter valve is connected to an exhaust outlet of the turbine, the outlet end of the diverter valve is sequentially connected with the heat regenerator through a first branch, the bypass flow regulating valve is further connected between the diverter valve and the heat regenerator through a second branch, and the first branch and the second branch are connected to the cracker through a confluence pipeline; the monitoring module comprises a first temperature sensor, a first pressure sensor, a densimeter, a rapid component analyzer and a temperature monitoring unit; the control module generates a control instruction for the mixing temperature of exhaust gas entering the cracker according to the comparison result of the wobbe number estimated value and the wobbe number target reference value, and adjusts the opening degree of the bypass flow adjusting valve so as to solve the technical problem of unstable combustion.

The utility model discloses a color mixing structure of a mixed double-color injection machine, which comprises a confluence flange, and a first flow channel and a second flow channel which are inclined are arranged in the confluence flange; the color mixing connector is arranged on the upper side of the confluence flange through a fastener, a first color mixing connector flow channel and a second color mixing connector flow channel are arranged at the bottom of the color mixing connector, a flow dividing valve element is inserted in the color mixing connector, a first flow dividing valve element flow channel and a second flow dividing valve element flow channel are arranged in the flow dividing valve element, and the first flow dividing valve element flow channel and the second flow dividing valve element flow channel are communicated with the first flow dividing valve element flow channel. The upper portion of the flow dividing valve element is sleeved with a color mixing head, a vertical first color mixing head runner is arranged in the middle of the color mixing head, and a plurality of second color mixing head runners are arranged on the periphery of the first color mixing head runner in the circumferential direction. The utility model can solve the problems of low production efficiency and poor qualification rate caused by poor color mixing effect and unsymmetrical transition color mixing position connection when the existing injection machine is used for producing color mixing products.

The invention provides a spindle water cooling machine control method and system for a high-precision numerical control machine tool and a medium. The method comprises the steps that the working state of a main shaft is determined and obtained, the shunting flow of a three-way diverter valve is controlled according to the working state, a control strategy of the three-way diverter valve is obtained, and the three-way diverter valve is controlled according to the control strategy to conduct cooling water control. By arranging the three-way diverter valve, switching of cooling water between the main shaft branch and the bypass loop is achieved, dynamic adjustment of the variable frequency water pump and the refrigerating device is combined with the control unit, and the problem of shock cooling shrinkage caused by continuous cooling when the main shaft temporarily stops is solved; meanwhile, the problems that the efficiency is low and the service life of equipment is shortened due to frequent start and stop or continuous full-load operation of the water cooling machine are solved, and intelligent control over the spindle water cooling machine of the high-precision numerical control machine tool is achieved.

The dish-washing machine shunt valve comprises a cover body, a shell, a rotary driver, a valve plate, a spring, a rotating piece and a rotary driver, the cover body and the shell are mutually covered to form a valve cavity, the rotating piece is rotationally connected to the shell and driven by the rotary driver to rotate, and the rotating piece comprises a linkage end. The linkage end is located in the valve cavity and faces the cover body, the valve plate is installed at the linkage end, and the valve plate is axially connected to the linkage end in a sliding mode; the cover body is provided with a first water outlet and a second water outlet, the valve plate is provided with a plurality of control positions, and the plurality of control positions comprise a closed position; the valve plate has three states in the axial rotation process, in the first state, the first water outlet can be blocked at the closed position; in the second state, the sealing position can block the second water outlet; and in the third state, the closed position is staggered with the first water outlet and the second water outlet. The dish-washing machine is simple in structure, capable of achieving dish-washing machine water path control, good in sealing performance of the shunt valve and small in water pressure loss.

The present application relates to a kind of hydraulic drive variable stiffness soft gripper, including flexible finger, fixed support, slider, gear, oil pipe, lower oil pipe, piston driving device, one-way shunt valve, two-way shunt valve and motor;The flexible finger is arranged in the upper end of slider, the slider is slidably connected with fixed support, the gear is engaged with the rack on slider, the piston driving device is fixed in the lower end of fixed support, one end of the upper oil pipe is connected with slider, the other end is connected with two-way shunt valve, one end of the lower oil pipe is connected with slider, the other end is connected with one-way shunt valve, the slider driving motor is connected with sun gear in fixed support, the sun gear is engaged with planetary gear, the planetary gear is engaged with rack, the piston driving motor is connected with piston driving device;The present application is simple in structure, can adjust the gripping force of gripper according to the weight of object, can bend finger more easily when gripping action, so as to realize the nondestructive gripping of object.

The utility model belongs to the field of agricultural machinery, and discloses an anti-skid diverter valve group, a hydrostatic four-wheel drive system and agricultural machinery. The anti-skid diverter valve set is provided with a main oil inlet, a first working oil port, a second working oil port and a diverter valve, and bypass oil ways are arranged at the two ends of the diverter valve. The control valve is used for controlling hydraulic oil of the main oil inlet to be shunted to the first working oil port and the second working oil port through the diverter valve, or controlling the hydraulic oil of the main oil inlet to flow to the first working oil port and the second working oil port through the bypass oil way; and the pressure fine adjustment valve is arranged behind the diverter valve and is hydraulically connected with the first working oil port and the second working oil port. Whether hydraulic oil of the main oil inlet needs to be forcibly shunted or not can be controlled through the control valve, and when shunting is needed, the flow of the front drive motor and the flow of the rear drive motor can be forcibly shunted through the diverter valve so as to enhance the anti-skid effect; moreover, by arranging the pressure fine adjustment valve, the split ratio of the split hydraulic oil can be adjusted in a self-adaptive mode, and the purposes of reducing vibration and impact, reducing pressure loss and saving energy can be achieved.

The utility model provides a shunt valve structure which comprises a shunt valve body, a valve cover and a motor base, the valve cover and the shunt valve body are connected to define a shunt cavity, a sealing ring is arranged between the valve cover and the shunt valve body, a shunt shifting piece is rotatably connected in the shunt cavity, and the shunt valve body is provided with a water inlet and a plurality of water outlets which are communicated with the shunt cavity. The motor base is installed on the valve cover, a transmission cavity is defined by the motor base and the valve cover, a water diversion rotating shaft is arranged in the transmission cavity, the valve cover is provided with a hole position for the water diversion rotating shaft to penetrate through, a rotating shaft sealing ring is arranged at the position, corresponding to the hole position, in the transmission cavity, and the water diversion rotating shaft is connected with the rotating shaft sealing ring and penetrates through the hole position to be connected with the water diversion poking piece. And a driving motor connected with the water diversion rotating shaft is arranged on the motor base. Sealing structures are arranged between the water diversion valve body and the valve cover and at the connecting position between the water diversion rotating shaft and the valve cover, so that the air tightness problem of the water diversion cavity is solved.

The indexing chuck comprises a chuck body and a hydraulic pump station, the upper side and the lower side of the chuck body are provided with a pressing oil cylinder and an indexing plate respectively, a positioning oil cylinder, a 45-degree oil cylinder and a 90-degree oil cylinder are further installed in the chuck body, and a diverter valve is arranged at an outlet of the hydraulic pump station. The outlet end of the diverter valve is respectively connected with a pressing oil way, a positioning oil way and an indexing oil way, the indexing oil way comprises a three-position four-way electromagnetic directional valve A connected with the diverter valve, the left position and the right position of the three-position four-way electromagnetic directional valve A are respectively connected with a 45-degree oil way and a 90-degree oil way, the 90-degree oil way is connected with a synchronous oil cylinder in series, and the synchronous oil cylinder is connected with a hydraulic cylinder. A feedback piece is arranged on the front side of the movable end of the synchronous oil cylinder, the feedback piece is in communication connection with a lathe control system, and when the 90-degree oil cylinder completes the steering stroke, the feedback piece sends a signal to the lathe control system. According to the utility model, the synchronous oil cylinder is arranged to simulate the working state of the 90-degree oil cylinder in the disc body, so that the phenomena of cutter damage, product scrapping and machine tool damage in the machining process are avoided.

The application discloses a fracturing shunt control system, which comprises a sand liquid device, a pump truck device, a pipeline device, a shunt valve device and a control device. The pipeline device comprises an upstream pipeline for guiding fracturing sand liquid provided by the sand liquid device to multiple pump truck units of the pump truck device and a downstream pipeline for guiding fracturing sand liquid pumped by the multiple pump truck units to different fracturing wells. The shunt valve device is arranged on the upstream pipeline or the downstream pipeline and can distribute flow to the different fracturing wells. A fracturing detection assembly of the control device is used for detecting fracturing conditions of the different fracturing wells. The controller is configured to control the shunt valve device to distribute flow according to the fracturing conditions detected by the fracturing detection assembly, so that the fracturing system does not need to be arranged for each well when synchronous fracturing is performed on the different fracturing wells, and flow can be distributed to the different fracturing wells according to the fracturing conditions, thereby achieving the purposes of reducing fracturing cost and reducing the adjustment difficulty of fracturing displacement.

The invention relates to the technical field of automatic oil sampling for operation and maintenance of transformers, and particularly discloses an oil sampling flow collecting and flow dividing control module and automatic oil sampling equipment. The module comprises a flow dividing valve block, a flow dividing control valve, an oil sampling container, a waste oil container, a flow dividing pipeline, a first flow collecting butt joint pipeline and the like; the device has a flow collecting and distributing function and can be applied to full-closed automatic oil sampling operation; the oil sampling equipment comprises an oil sampling robot of a mobile chassis main body with an intelligent mobile control system, an oil sampling flow collecting and distributing control module carried on the mobile chassis main body, and an outer end butt joint part or an outer end module which is arranged on external equipment and is in butt joint with a first flow collecting butt joint pipeline, the multifunctional oil sampling device has the advantages that automatic oil sampling operation can be realized, manual operation can be effectively replaced, automatic adjustment, effective and reliable butt joint can be realized, full-closed oil sampling operation and other multifunctional effects can be realized, and the operation and maintenance efficiency and effectiveness can be improved.

An externally programmable shunt valve assembly that includes a magnetic rotor that is operable in response to an externally applied magnetic field and configured to increase or decrease the working pressure of the shunt valve assembly in finite increments.

The invention provides a load-sensitive multi-way valve, and belongs to the technical field of multi-way valves. The problem that oil inlet flow output of an existing hydraulic system cannot be adjusted in real time under the condition of high load is solved. The load-sensitive multi-way valve comprises a valve body, the valve body comprises an oil inlet unit and at least one reversing unit, and the oil inlet unit is provided with a main oil return way, a main oil way communicated with an external variable pump and a main feedback oil way. The reversing unit is provided with a reversing oil inlet oil way communicated with the main oil way, a reversing load pressure Ls oil way communicated with the main feedback oil way and a reversing oil return oil way communicated with the main oil return oil way, the oil inlet unit is further provided with an auxiliary oil way communicated with an external metering pump, and an unloading diverter valve capable of being communicated with the auxiliary oil way and the main oil return oil way is arranged in the oil inlet unit. A flow dividing unloading valve element capable of adjusting the flow during movement is arranged in the unloading flow dividing valve. The load-sensitive multi-way valve can adjust the ratio of the oil quantity of the auxiliary oil way entering the main oil way to the oil quantity of the main oil return way, and the oil quantity supply of the reversing oil inlet way can be adjusted in real time.

A system and method of accurately measuring a pressure (Pp) within a human brain using totally-implanted or partially-external hardware. The system includes a first pressure transducer configured to measure a cerebrospinal fluid pressure (Pcsf) within a ventricle of a brain, a second pressure transducer configured to indirectly measure a second pressure (Pp) within a space of the brain, and an adjustable implanted valve controller configured to calculate the effective differential pressure (Pei = Pcsf - Pp) between the measured pressures Pcsf and the Pp and determine whether the effective differential pressure measurement represents a true secondary pressure.

The pressure regulating valve comprises a splicing pipe, an electric adjusting device is arranged at the upper end of the splicing pipe, a gas inlet flange plate connector is arranged at the lower end of the splicing pipe, a pressure relief bolt is arranged at the lower end of the gas inlet flange plate connector, a T-shaped flow dividing pipe is arranged on one side of the splicing pipe, and a first flange plate flow dividing opening is formed in one side of the T-shaped flow dividing pipe. The electric adjusting device has the advantages that the electric adjusting device controls accurate adjustment of the flow dividing valve head through the rotating motor, an air flow channel in the pipeline can be adjusted in real time, it is ensured that the gas pressure of the gas pipeline is stabilized within a set range, and especially when the load changes or the environmental condition fluctuates, the flow dividing valve head can be adjusted in real time. The pressure regulating valve can keep stable operation of the system, and the stability and reliability of the whole gas pipeline system are greatly improved.

This invention provides a hydraulic system for a bamboo felling machine head, relating to the field of bamboo felling equipment technology. The system includes: a hydraulic oil source, a saw blade motor, a first oil cylinder, a second oil cylinder, a flow divider valve, a first reversing valve, a second reversing valve, and a third reversing valve. The saw blade motor drives the circular saw to rotate and cut bamboo. The first oil cylinder drives the pushing clamp arm. The second oil cylinder drives the collecting clamp arm. The flow divider valve has an oil inlet, a first oil outlet, and a second oil outlet; the oil inlet is connected to the hydraulic oil source via a pipeline. The first reversing valve controls the start and stop of the saw blade motor. The second reversing valve controls the extension and retraction of the first oil cylinder. The third reversing valve is located between the second oil outlet of the flow divider valve and the second oil cylinder to control the extension and retraction of the second oil cylinder. This application provides a mechanized bamboo felling device.

A clutch assembly (100) for use in a wellbore (11) and connectable between a first (38) and second (39) drill string sections is provided. The clutch assembly includes a first assembly portion connectable to the first drill string section and a second assembly portion connectable to the second drill string section. The second assembly portion comprises a driveshaft (202). The clutch assembly further comprises a releasable clutch mechanism (206) that selectively rotationally locks the first assembly portion (203) with the second assembly portion (204). The clutch assembly may comprises a one-way bearing assembly (211)allowing rotation of the driveshaft relative to the first assembly portion in a first rotational direction and preventing rotation of the driveshaft in a second rotational direction opposite to the first rotational direction. The clutch assembly may comprise a diverter valve mechanism (210) having an open configuration and a closed configuration.

The utility model provides an excavator standby hydraulic system and a control method thereof, and belongs to the technical field of engineering machinery, the excavator standby hydraulic system comprises a standby hydraulic system, the standby hydraulic system is connected with a hydraulic oil tank and a main valve, the standby hydraulic system comprises a standby pump, and an outlet of the standby pump is connected with an inlet of a diverter valve; a first outlet of the diverter valve is connected with a first inlet of the main valve, and a second outlet of the diverter valve is connected with a first inlet of the shuttle valve. By arranging the standby hydraulic system, normal action of the excavator can be guaranteed when the main hydraulic system breaks down, and the situation that the engineering progress is affected due to the fact that the excavator cannot move is avoided.

The utility model belongs to the technical field of waterproof coating production, and particularly relates to a modified emulsified asphalt waterproof coating processing and feeding device which comprises a liquid soap tank and a feeding assembly, the bottom of the liquid soap tank is connected with the top end of a three-way pipe, the other two ends of the three-way pipe are connected with a circulating valve and a tank bottom valve, and the circulating valve is connected with a water inlet of a circulating pump. The feeding assembly comprises a first five-way pipe and a second five-way pipe, four opposite ports of the first five-way pipe and the second five-way pipe are connected with the two ends of four venturi pipes respectively, the throat portions of the venturi pipes are connected with feeding pipes, the feeding pipes are connected with the bottoms of the four storage tanks through feeding valves, and flow dividing valves are installed between the venturi pipes and the first five-way pipe. The first five-way pipe is connected with a water outlet of the circulating pump, and the second five-way pipe is communicated with the top of the liquid soap tank. By controlling the valve path states of the four diverter valves and the feeding valve, the emulsifying agent and the auxiliary agent stored in the plurality of storage tanks can be pumped into the liquid soap tank at a constant speed under negative pressure, so that the phenomenon that the emulsifying agent and the auxiliary agent huddle due to non-uniform feeding or too fast feeding is avoided, and the feeding labor amount is effectively reduced.

The utility model relates to the technical field of rotary diverter valves, in particular to a rotary diverter valve. According to the technical scheme, the valve comprises a valve element and a shell, the valve element is rotationally connected into the shell, two oil channels are formed in the valve element, openings in the upper ends of the two oil channels are both located on the side wall of the valve element and distributed in an up-down staggered mode, and openings in the bottoms of the two oil channels are both located in the bottom of the valve element; outer edge grooves are formed in the positions, aligned with the opening of the oil channel, of the side wall of the valve element, a sealing plate is fixed to the position, aligned with the opening in the upper end of the oil channel, in the shell, the inner side of the sealing plate is attached to the side wall of the valve element, and an injection hole is formed in the position, aligned with the opening of the oil channel, of the shell. Sealing monitoring is carried out in an air pressure monitoring mode, when leakage occurs inside, the leakage can be found in time, larger potential safety hazards caused by untimely overhaul can be avoided, meanwhile, the outer edge groove is formed in the oil way inlet for flow guiding, and the response speed of oil way switching can be increased.

The invention discloses a shunt valve, a distributor of a dish-washing machine and the dish-washing machine. The shunt valve comprises a valve body, a valve element and a driving part, and the valve body is provided with an inlet and a plurality of outlets; the valve element is arranged on the valve body and enables the multiple outlets to be communicated with the inlet in a switchable mode. The driving piece is in transmission connection with the valve element, and the driving piece and the inlet are staggered in the axial direction of the inlet. The distributor of the dish-washing machine comprises the shunt valve and a water pump, and a water outlet of the water pump is coaxial and communicated with an inlet of the shunt valve. The dish washing machine comprises an inner container, a water cup, a plurality of spraying arms and the shunt valve. According to the shunt valve, the distributor of the dish-washing machine and the dish-washing machine, the distance between the water pump and the shunt valve can be shortened, on-way losses are reduced, meanwhile, water in the water pump can linearly pass through the shunt valve, local losses are reduced, and the hydraulic efficiency of a whole water path system of the dish-washing machine is improved.

The utility model discloses an electric control multi-way valve with a flow dividing function and a pressure maintaining function. The electric control multi-way valve comprises an oil inlet valve body, a main valve body and an oil return valve body which are sequentially connected. A diverter valve is arranged on the oil inlet valve body; a valve element is arranged in the main valve body, and the main valve body is provided with a hydraulic lock valve block, a hydraulic lock and a hydraulic lock valve element. According to the utility model, the self-locking function, the shunting function and the floating position function are integrated in one piece valve, so that the performance of the original common proportional valve can be achieved, the functions are diversified, and the selection of customers is more convenient.

The present invention discloses a latex matrix conveying resistance reducer, which is installed between the mixer of the mixing truck and the conveying hose. It is composed of components such as an outer casing, a core body, a rotating rotor, an inner core, and a shunt valve. Its working principle is as follows: The concentrated drag reducer and water are respectively pumped out by a high-pressure pump and shunted at the shunt valve. 15% of the solution is injected into the first mixing zone, and the drag reducer diluted in proportion is ejected from the axial through groove at the front end of the inner core under the action of pressure to form an extremely thin first drag reduction ring, completing the primary drag reduction; the remaining 85% of the concentrated drag reducer and water are injected into the second mixing zone, and the drag reducer diluted in proportion is ejected from the axial through groove at the front end of the core body under the action of pressure to form a drag reduction ring column, which wraps the first drag reduction ring to form the second drag reduction. The existence of the two drag reductions ensures that during the process of conveying the latex matrix to the end of the hose, the latex matrix is always wrapped by the drag reducer, blocking the contact between the latex matrix and the pipe wall and reducing the conveying resistance.

A hydraulic pump assembly for DHT (Diverterless Hydrodynamic) and its operating method are disclosed, belonging to the field of vehicle transmission technology. The assembly includes a top cover assembly stacked along the assembly axis for integrating oil supply and hydraulic control functions; a valve body partition for orderly isolation of multiple hydraulic channels; a reaction support for supporting the integrated oil circuit and providing one-way protection; and fixing bolts for locking and securing. The top cover assembly, using the valve body top cover as its mounting base, integrates an electromagnetic switching valve, a temperature sensor, a pressure regulating valve, a locating pin, a flow divider valve, and a mechanical pump rotor assembly. The valve body partition employs a customized partition structure matched to the internal oil circuit layout. The reaction support, using the lower valve body plate as its mounting base, is equipped with a cup-shaped plug and a one-way valve assembly. This invention shortens the oil circuit path, reduces system leakage points and hydraulic pressure loss, and improves the control response speed and operational stability of the hydraulic system.

The utility model provides a multi-mode assembly type faucet set which comprises a plastic main body, a constant-temperature valve element assembly, a cold and hot valve element assembly, a shunt valve element and a plug assembly, and a first installation cavity and a second installation cavity are formed in the two ends of the plastic main body respectively. A single-function faucet is formed when the first installation cavity is connected with the cold and hot valve element assembly and the second installation cavity is connected with the plug assembly, and a double-function faucet is formed when the first installation cavity is connected with the cold and hot valve element assembly and the second installation cavity is connected with the shunt valve element. When the first installation cavity is connected with the constant-temperature valve element assembly and the second installation cavity is connected with the shunt valve element, a constant-temperature faucet is formed. The faucet can be universally used for common cold and hot faucets and constant-temperature faucets, the angle of the valve element of the common faucet can be conveniently adjusted, and different requirements of customers for products are met.

The utility model discloses a filtering diverter valve which comprises a valve body. The valve body comprises a water inlet; a sub-runner is arranged in the valve body; a first water outlet and a second water outlet are formed in the rear part of the valve body; a filtering assembly is arranged on the second water outlet; an open groove is formed in the second water outlet; a sliding block is arranged on the filtering assembly; the sliding block is located in the open groove. The filter assembly can rotate a sliding block to adjust the flow speed. By arranging the rotatable filtering assembly, the corresponding relation between the first filtering hole and the second filtering hole is changed, the filtering flow speed is adjusted, and adjustment and closing of the flow speed are achieved; meanwhile, the filtering partition of a conical structure is arranged, so that dirt is prevented from being accumulated at the bottom of the filtering partition to cause blockage and non-circulation.

The utility model relates to the technical field of dish washing machines, in particular to a water cup structure of a dish washing machine, which comprises a water cup body provided with a water collecting cavity and a water diversion joint, and the water diversion joint comprises a connecting port and a water diversion channel; the water distribution assembly comprises a valve seat and a water distribution valve plate, the valve seat is detachably connected with the water cup body, the valve seat is provided with a water distribution cavity communicated with the water distribution channel, an opening of the water distribution cavity is connected with the connector, and the water distribution valve plate is arranged at the opening of the water distribution cavity; the driving assembly comprises a mounting seat and a driving part used for driving the shunt valve plate to rotate, the driving part is arranged on the mounting seat, and the mounting seat is detachably connected with the valve seat; a positioning assembly is arranged between the valve seat and the water cup body and is used for aligning the opening of the water dividing cavity with the connecting port; according to the detachable water cup, the water cup body, the valve seat and the mounting seat are detachably connected, so that all the components can be conveniently detached and reassembled when needing to be maintained or replaced.

The utility model provides a hydraulic fan reversing structure of a tractor, which comprises a hydraulic reversing fan and a fan reversing solenoid valve, the front side of a hydraulic oil tank is connected with an oil suction filter, and the oil outlet end of the oil suction filter is connected with the oil inlet end of a gear pump through a pipeline; the oil outlet end of the gear pump is connected with the oil inlet end of the fan reversing electromagnetic valve through a pipeline, one group of the oil outlet ends of the fan reversing electromagnetic valve is connected with the hydraulic reversing fan through a pipeline, the other group of the oil outlet ends of the fan reversing electromagnetic valve is connected with the diverter valve through a pipeline, and the diverter valve is connected with the radiator and the hydraulic oil tank. The hydraulic reversing fan is arranged on one side of the radiator. An original common fan is replaced by the hydraulic reversing fan, the small oil cylinder is arranged on the hydraulic reversing fan, the fan blades can be pushed to change the inclination angle of the fan blades, and therefore blown wind can blow away weeds, straw and other objects attached to the machine cover.