230 results about "Valve oil" patented technology

The invention relates to the technical field of valve oil seal press-fitting equipment, and particularly discloses a valve oil seal press-fitting machine which comprises a base, a mounting seat capable of overturning front and back is arranged on the base in a sliding manner, and an engine cylinder cover is arranged on the mounting seat; the press-fitting part comprises a driving plate and a pressing head, the driving plate is arranged above the mounting seat in a vertical sliding mode, a plurality of sliding seats capable of sliding left and right are arranged on the driving plate, and the pressing head is vertically arranged on the sliding seats; the variable-pitch part comprises a variable-pitch plate and a variable-pitch rod, the variable-pitch plate can be vertically arranged on the driving plate in a sliding manner, a plurality of groups of guide holes are formed in the variable-pitch plate, and each group of guide holes comprises two guide long holes which are symmetrical to each other and are obliquely formed; a variable-pitch rod is fixedly arranged on a sliding seat, a plurality of through holes are formed in the driving plate at intervals, and the variable-pitch rod penetrates out of the through holes and the guide long holes. The problems that according to a traditional valve oil seal pressing machine, it is difficult to achieve that one device is compatible with assembling of valve oil seals of various types, and some valve oil seals which are slightly deformed but do not affect use are prone to failing in installation are solved.

The invention discloses a distribution valve for a transmission of a high-horsepower tractor. Comprising a valve body, an oil inlet, an oil return port, a clutch oil port, a working gear oil port, a clutch control slide valve, a clutch oil port and a brake oil port, wherein the oil inlet, the oil return port, the clutch oil port and the working gear oil port are formed in the valve body; the first overflow valve is used for controlling the pressure of the brake oil port, the second overflow valve is used for controlling the pressure of the working gear oil port, and the three-position three-way adjusting slide valve is further included. And the three-position three-way adjusting slide valve is provided with a working oil port, a slide valve oil return port, a slide valve oil inlet and a hydraulic control port which is communicated with the oil inlet and is connected with the slide valve oil inlet in parallel. The device has the characteristics that the oil pressure is accurately controlled, the oil is quickly conveyed, the oil is instantly conveyed to lubricate, cool and protect the device parts, the maintenance cost is reduced, and the normal, stable and efficient work of the tractor is ensured.

The invention discloses a closed center multi-way valve with a converging function, a hydraulic system and a loading machine. An oil inlet P1 of the multi-way valve is sequentially connected with inlets of a bucket unit, a movable arm unit and a machine tool unit; the oil inlet P3 is connected with the control end of the first hydraulic control valve, an inlet of the first hydraulic control valve and an inlet of the first one-way valve. The outlet of the one-way valve I is connected with the outlet of the one-way valve III and the inlet of the machine; an inlet of the second hydraulic control valve is connected with a spring cavity of the first hydraulic control valve, the control end of the machine and tool joint compensator and the control end of the second hydraulic control valve, an outlet of the second hydraulic control valve is connected with an inlet of the second one-way valve, and an outlet of the second one-way valve is connected with the control end of the movable arm joint compensator and the control end of the bucket joint compensator. According to the hydraulic system combining the quantitative gear pump and the closed center multi-way valve, two options of standard flow and large flow can be achieved, under the condition that no action is carried out, confluent flow can normally return to an oil tank, and it can be guaranteed that the movable arm unit and the bucket unit work at the standard flow in the large-flow state.

The application discloses a buoyancy adjusting and communication device for underwater AUV, which comprises a communication cabin body, an integrated antenna, an inner oil tank, an air bag, an air bag pressing ring, an air bag cabin body, a rear end cover, a pump valve gas path assembly, a pump valve oil path assembly, an outer oil tank assembly and the like. The communication cabin body is connected with an AUV pressure cabin body and is sealed through an O-shaped ring. The integrated antenna is installed on the communication cabin body and is sealed through an O-shaped ring, and is used for the communication function of the underwater AUV. The inner oil tank is fixed on the air bag cabin body, and the air bag is sleeved on the air bag cabin body and is tightly sealed through the air bag pressing ring. The pump valve gas path assembly is used for discharging the gas in the cabin to the air bag or sucking the gas in the air bag into the cabin, so as to change the buoyancy state of the AUV. The pump valve oil path assembly is used for discharging the hydraulic oil in the inner oil tank to the outer oil tank assembly or sucking the hydraulic oil in the outer oil tank assembly into the inner oil tank, so as to change the buoyancy state of the AUV.

The invention is suitable for the technical field of shock absorbers, and provides a transverse shock absorber compression valve assembly which comprises a compression valve assembly body transversely installed between a working cylinder and an oil storage cylinder base, and the compression valve assembly body and the oil storage cylinder are positioned in the circumferential direction through a centering gasket. The compression valve assembly comprises a compression valve screw, a compression valve seat and a compression valve nut which are transversely arranged, a compensation valve oil way is arranged on the lower portion of the compression valve seat, and oil in the oil storage cylinder enters the working cylinder through the compensation valve oil way to achieve oil exchange. Meanwhile, due to the fact that air can be gathered on the upper portion of the oil storage cylinder due to the fact that the density of the air is smaller than that of oil, and the compensation valve oil way is located below the compression valve assembly, the air in the oil storage cylinder is prevented from entering the working cylinder through the compensation valve oil way, functional defects of the transverse shock absorber are effectively avoided, and the working performance of the transverse shock absorber is improved.

The main and standby integrated passive electric control brake valve comprises a main brake valve and an auxiliary brake valve, the main brake valve and the auxiliary brake valve share one control box, an oil storage cup and an oil pipe connector, and oil cavities of the main brake valve and the auxiliary brake valve are both communicated with the oil outlet end of the oil storage cup; a self-return shuttle valve is arranged between the main brake valve and the auxiliary brake valve, and an oil passing cavity is formed in the self-return shuttle valve; a steel ball is arranged in the oil passing cavity in a sliding mode and can block the paths, flowing to the oil pipe connector, of oil in the main brake valve and the auxiliary brake valve, and elastic damping pieces are arranged at the ends, close to the oil inlet direction of the main brake valve and the auxiliary brake valve, of the steel ball. The elastic damping part is arranged to counteract hydraulic force in the pressure reduction process, so that the steel ball cannot block a communication path of the main brake valve oil cavity and the oil passing cavity during pressure reduction, hydraulic oil can flow back to the main brake valve, and the oil pumping fault can be avoided.

The invention relates to the technical field of valve oil seal testing, in particular to sealing performance testing equipment for automobile sealing ring parts. Comprising a support frame; the control panel is installed on the side face of the supporting frame. The mounting plate is connected to the top of the supporting frame; the fixing frame is connected to the top of the mounting plate; the mold is placed on the fixed frame; and the rotating frame is rotationally connected to the top of the mounting plate. The sealing performance between the rotating frame and the fixed frame is ensured through cooperation of the rotating frame and the fixed frame and the first sealing ring, a closed space can be formed to simulate actual working conditions, engine oil in the closed space cannot leak due to external factors when the sealing performance of the valve oil seal is tested, therefore, misjudgment can be avoided, and meanwhile, the sealing performance of the valve oil seal is ensured. When the valve oil seal leaks, certain hydraulic pressure is kept in the fixed frame and the rotating frame, any leakage can cause engine oil to be sprayed out from a gap between the valve body and the valve oil seal, and the visual representation enables the test result to be more accurate and reliable.

The utility model discloses an oil gas inlet cleaning device for a combination valve, which relates to the technical field of valve cleaning and comprises a base, a machining table is fixedly erected on the top of the base, two fixing seats are fixedly connected to the top of the machining table, and two clamping cylinders are fixedly mounted in the fixing seats in a penetrating manner. Clamping blocks are fixedly connected to the telescopic ends of the two sets of clamping air cylinders correspondingly, a valve body is clamped and fixed between the two sets of clamping blocks, and an oil gas inlet of the valve body faces upwards. And the cleaning mechanism comprises a mounting base, a lifting air cylinder, a lifting base, a mounting frame, a motor, a cleaning brush and a liquid storage box, and the mounting base is in an L shape. The oil-gas inlet of the combination valve can be rapidly and conveniently cleaned and cleaned, time and labor are saved, efficiency is high, cleaning uniformity is good, meanwhile, waste liquid generated by cleaning and cleaning can be collected and filtered, waste liquid and impurity particles can be separated and treated in a centralized mode, and practicability is high.

The present invention discloses a valve oil seal with adjustable leakage, comprising a reinforcement skeleton, a rubber body fixedly connected to the inner wall of the reinforcement skeleton, a first spring groove opened near the top of the reinforcement skeleton on the outer wall of the rubber body, a self-locking spring structure provided on the inner wall of the first spring groove, the outer wall of the self-locking spring structure is sleeved and tightly matched with the inner wall of the first spring groove, a main sealing lip is provided on the inner wall of the rubber body near the self-locking spring structure, a protective structure is provided on the inner wall of the rubber body near the bottom of the main sealing lip, an adjustment ring is fixedly connected to the bottom of the reinforcement skeleton, a fixing ring is fixedly connected to the bottom of the adjustment ring, and a second spring groove is opened near the top of the adjustment ring on the outer wall of the reinforcement skeleton. By replacing the adjustment spring to adjust the force of the reinforcement skeleton, the adjustment ring is slightly deformed, the matching clearance at the main sealing lip can be changed, and an interference fit is generated at the main sealing lip, so as to achieve the effect of adjustable leakage.

The invention provides an oil insulation three-phase integrated converter transformer system. The system comprises a converter valve provided with a diode valve, a direct current side outgoing line and a converter transformer valve side outgoing line, and a three-phase three-winding converter transformer provided with three-phase winding structures, and each phase winding structure comprises a network side outgoing line, a valve Y side outgoing line and a valve D side outgoing line; the top of the converter valve oil tank is provided with a direct-current sleeve, and the side wall of the converter valve oil tank is communicated with a converter valve side sleeve; the top of the transformer oil tank is provided with a network side sleeve, and the side wall of the transformer oil tank is communicated with a valve Y side sleeve and a valve D side sleeve; a plurality of converter transformer valve side sleeves are respectively butted and communicated with a plurality of valve Y side sleeves and a plurality of valve D side sleeves; an alternating current side outgoing line is connected with a valve Y side outgoing line and a valve D side outgoing line; and an AC-DC conversion system is formed among the converter valve oil tank, the transformer oil tank, the converter transformer valve side sleeve, the valve Y side sleeve and the valve D side sleeve. Through the current conversion system provided by the invention, the problems of low integration level, large equipment quantity, large size, large occupied area, high cost, complex structure, complex electrical connection and the like of the current conversion system are solved.

The invention discloses a filling pump swing valve main control oil way system and a control method, the filling pump swing valve main control oil way system comprises a swing valve oil cylinder A and a swing valve oil cylinder B which are oppositely arranged, and the filling pump swing valve main control oil way system further comprises an electro-hydraulic directional control valve composed of a first electro-hydraulic directional control valve and a second electro-hydraulic directional control valve; the filling pump swing valve main control oil way system further comprises a bypass valve and a pressure reducing valve. When the filling operation is normally stopped, one swing valve oil pump completely extends out and the other swing valve oil pump completely compresses under the action of the electro-hydraulic reversing valve, the bypass valve is manually operated, the swing valve oil cylinder can be located at any position, and impact generated to a support ball socket during reversing of the swing valve oil cylinder is eliminated. And the filling pipeline is connected with the filling pump hopper, so that self-flowing filling is realized.

The utility model relates to the technical field of bale collecting equipment, in particular to a hydraulic system of a small square bale bundling and collecting machine. The main hydraulic system comprises a plunger variable pump, a high-pressure filter and an electric proportional multi-way valve; the plunger variable pump adopts a plunger variable pump with pressure cut-off and load sensitive functions, and the electric proportional multi-way valve is a load sensitive electric proportional multi-way valve; the plunger variable pump is powered by a power shaft of a tractor; an oil inlet of the electric proportional multi-way valve is connected with a pressure oil port of the plunger variable pump through the high-pressure filter, and the high-pressure filter filters rolling oil. A control oil return port of the electric proportional multi-way valve is connected with the oil tank, and a load pressure feedback signal output port is connected with a feedback oil port of the plunger variable pump; the electric proportional multi-way valve comprises a multi-union reversing valve which is connected with an actuator to form hydraulic loops with different functions. The hydraulic system has the advantages of being high in output efficiency, saving fuel oil, reducing oil consumption, reducing heating of the hydraulic system, prolonging the service life of hydraulic elements and reducing pollution.

The utility model discloses a device for taking out a guide sleeve assembly of a steam turbine high-pressure combined valve hydraulic servo-motor, which relates to the technical field of tools for taking out guide sleeve assemblies of hydraulic servo-motors and comprises an outer ring, a plurality of tin bronze lining tiles used for taking out copper sleeves are arranged on the circumferential side of the inner ring of the outer ring, and threaded holes are formed in the periphery of the outer ring. A lead screw is connected into each threaded hole in a screwed mode, and a connecting assembly matched with the lead screws is arranged in the middle of the outer side face of the tin bronze lining tile. According to the taking-out device, the outer ring is matched with the lining tile and the lead screw, the aim of rapidly taking down the guide sleeve assembly of the valve hydraulic servo-motor is conveniently achieved, the lining tile is matched with the connecting assembly and the lead screw, the guide sleeve assemblies with different diameters can be rapidly taken down, and the taking-out device is simple in structure, convenient to operate and high in practicability. The guide sleeve assembly can be safely and rapidly disassembled, the labor intensity of workers is greatly relieved, and the working efficiency of disassembling operation is effectively improved.

The pressing head comprises a shaft seat and the pressing head, a connector of the pressing head is detachably connected with the shaft seat, the pressing head comprises a column body, the protruding connector is arranged on the front end face of the column body, a second cavity and a first cavity are sequentially formed in the rear end face of the column body from outside to inside, and the first cavity is communicated with the second cavity. The second cavity and the first cavity are coaxially arranged, the diameter of the second cavity is larger than that of the first cavity, an insertion head is arranged at the bottom of the first cavity and extends backwards, and the head of the insertion head penetrates out of the second cavity. The utility model has the beneficial effects that the pressure head, the valve oil seal and the shaft seat are assembled, then the insertion head is inserted into the valve guide pipe, and the shaft seat is pressed forcibly, so that the valve oil seal is sleeved on the valve guide pipe, the whole process is simple to operate, the workload is reduced, the valve oil seal can be used on other types of machines by replacing a front end pressure head, and the cost is saved.

The utility model belongs to carbonization furnace technical field, specifically disclose a kind of carbonization furnace feeding mechanism of material supplement, including feed bin, feed bin top is equipped with feed inlet, feed bin bottom is equipped with discharge gate, discharge gate is detachably connected with gate valve on, gate valve is detachably connected with supplement bin on, supplement bin is equipped with rotating mechanism inside, rotating mechanism includes bearing, the outer ring of bearing is fixedly connected with the outer wall of supplement bin one side, the inner ring of bearing is fixedly connected with worm, motor is equipped on worm one end, worm is meshed and is connected with worm wheel, worm wheel is fixedly connected with shaft, shaft is equipped with blade, supplement bin bottom is detachably connected with feeding valve. To the problem of carbonization furnace drum valve oil leakage causes equipment failure under prior art, the utility model changes drum valve into plug valve by the mode that supplement bin is set on plug valve, and further solves the problem that carbonization furnace drum valve oil leakage causes equipment failure and influences production, and there is certain security risk under high temperature environment.

The invention provides a device for automatically replacing a fixed throttling valve oil nozzle. The device comprises a sealing mechanism, a rotating mechanism, a lifting mechanism and a guide mechanism which are detachably arranged at the top of a valve body. The sealing mechanism provides a stable working environment for the rotating mechanism, the lifting mechanism and the guide mechanism; the rotating mechanism comprises a supporting frame, a worm is rotatably arranged at the bottom of the supporting frame, a worm gear is connected to the worm in a meshed mode and arranged on a union nut in a sleeving mode, the union nut is in threaded connection with the valve body, and the valve rod and the oil nozzle assembly are arranged on the lower side of the union nut. The lifting mechanism comprises a rack arranged in the sealing mechanism, a lead screw is rotatably arranged on the rack, and the lead screw is used for driving the supporting frame to move in the height direction, so that a valve rod and an oil nozzle assembly on the lower side of the union nut are driven to ascend and move out of the valve body; the guide mechanism comprises guide pins symmetrically arranged on the rack, and the guide pins are connected with the lower portion of the supporting frame in an inserted mode. The structure is compact, the replacement efficiency of the throttle valve oil nozzle assembly is improved, and operation is convenient.

The utility model relates to the technical field of cotton press machines, in particular to a pre-pressing mechanism of a cotton press machine, which comprises a pre-pressing oil cylinder, a base and a controller, a rodless cavity is arranged at the inner top end of the pre-pressing oil cylinder, a rod cavity is arranged at the inner bottom end of the pre-pressing oil cylinder, a rodless cavity oil pipe is arranged at one end of the pre-pressing oil cylinder, and a rod cavity is arranged at the other end of the pre-pressing oil cylinder. A rod cavity oil pipe is installed at the other end of the pre-pressing oil cylinder, the pre-pressing oil cylinder is further communicated and connected with the motor pump set, a liquid filling assembly is installed between one end of the rodless cavity oil pipe and the top end of the pre-pressing oil cylinder and comprises a liquid filling oil tank, a liquid filling valve and a liquid filling valve oil pipe, and a liquid filling oil pipe is installed and connected between the liquid filling valve and the liquid filling oil tank. A liquid filling valve control oil pipe is installed and connected between the liquid filling oil pipe and the rod cavity oil pipe, the liquid filling oil tank and the liquid filling valve are both electrically connected with the controller, and a liquid filling oil return pipe is further arranged at the top end of the liquid filling oil tank. And the service life of the equipment is influenced.

The utility model relates to the technical field of testing devices, and provides a performance testing device for an integrated valve oil cylinder, which comprises a testing workbench and a power mounting table, a workbench surface is formed on the surface of the testing workbench, and an oil collecting assembly and a testing tool are arranged on the workbench surface; the operating table is arranged on one side of the working table top, a touch screen, operating buttons, an instrument panel and a quick plug module are arranged on the operating table, the touch screen is used for man-machine interaction, the operating buttons are used for controlling corresponding test systems, the instrument panel is used for displaying corresponding test data, and the quick plug module is used for being connected with oil ports of a tested object; the power mounting table is selectively connected with the test workbench and comprises an oil tank and an oil pump, the oil pump is arranged on one side of the oil tank, and the oil tank is used for supplying oil to a tested object; the oil tank is further connected with the oil collecting assembly. According to the utility model, various working conditions of the tested object in different working scenes can be simulated, and performance testing can be carried out on various complex conditions encountered by the tested object in practical application.

The utility model relates to a gearbox cleaning, filtering and maintaining device which comprises a box body, a cleaning and filtering device is arranged outside the box body, the cleaning and filtering device comprises a motor and a speed reducer, the motor is arranged at the bottom of the box body, and the speed reducer is arranged at the output end of the motor. According to the gear box cleaning, filtering and maintaining device, a gear box body is placed on the containing plate and fixed through a threaded rod and a rubber plate, then cleaning liquid is poured into the gear box body to submerge the gear box body, a motor is started to be matched with a speed reducer to drive the gear box body to conduct rotary cleaning, and then the cleaning liquid is filtered through a first filtering plate; and finally, the valve telescopic hose and the telescopic oil conveying hose are connected with the valve oil inlet pipe and the valve oil outlet pipe, and the lubricating oil can be filtered through the magnetic suction plate and the second filter plate, so that the purpose of conveniently cleaning, filtering and maintaining the gear box is achieved.

The present invention provides an engine fuel supply device, which relates to the technical field of aviation engine fuel supply control devices. The device includes a valve body, on which an oil filter, an ignition circuit electromagnet, an accumulator, a fuel supply circuit electromagnet and an electric pump are installed. The valve body is provided with a first oil delivery channel, a fuel supply valve oil outlet channel and a fourth oil delivery channel. The oil liquid in the first oil delivery channel is input into the oil filter, the accumulator, the fuel supply circuit electromagnet and the fuel supply valve oil outlet channel through the electric pump. The oil liquid in the first oil delivery channel is input into the oil filter, the accumulator, the ignition circuit electromagnet and the fourth oil delivery channel through the electric pump. Through the same valve body, the switching of the fuel supply pipeline is realized. By controlling the ignition circuit electromagnet and the fuel supply circuit electromagnet, the control of the oil liquid supply flow rate is realized. Overall, an integrated structure is formed, reducing the pipeline layout and connection, reducing the space occupation, providing convenience for the structural layout of the engine and reducing the difficulty.

The utility model provides a quick-change pipeline operating system for an excavator and the excavator, and belongs to the technical field of engineering machinery. The hydraulic system comprises a main valve, a pilot oil source valve, a quick-change electromagnetic valve, a main valve oil way, a pilot oil way and a quick-change oil way, the main valve is provided with a Pp high-pressure oil port; the main valve oil way comprises a first main valve oil way and a second main valve oil way; one end of the pilot oil source valve is connected with the Pp high-pressure oil port through the first main valve oil way, and the other end of the pilot oil source valve is connected with an execution element through the pilot oil way. One end of the quick-change electromagnetic valve is connected with the Pp high-pressure oil port through the second main valve oil way, and the other end of the quick-change electromagnetic valve is connected with a quick-change device through the quick-change oil way. The pilot oil way and the quick-change oil way are separated, the quick-change electromagnetic valve is arranged on the quick-change oil way, and the effect of meeting various quick-change pressure requirements is achieved by adjusting the pressure reducing valve of the quick-change electromagnetic valve.

The present invention relates to an excavator. To solve the problem of unbalanced operation of the two oil pumps in an excavator with a dual-pump configuration, the present invention constructs a hydraulic oil supply control system, method, control device, and excavator. The control system includes a first oil pump, a first main valve, a third main valve, a second oil pump, and a second main valve whose oil inlet is connected to the second oil pump. The first main valve and the third main valve oil inlet are both connected to the first oil pump. The control system also includes: an oil supply distribution valve connected between the oil inlet of the third main valve and the second oil pump for controlling the on-off of the oil supply line between the third main valve and the second oil pump; a detection device for detecting the life parameters of the oil pumps; a controller for calculating the remaining life value of the corresponding oil pumps based on the life parameters; and controlling the displacement of each oil pump and the on-off of the oil supply distribution valve based on the remaining life value of the oil pumps when the third main valve is switched. The present invention realizes oil supply coordination between the two pumps, achieves balanced operation of the two pumps, and prevents premature excessive wear and failure of one pump.

The invention relates to a hydraulic valve with a non-contact valve element position detection function and a control method of the hydraulic valve. The hydraulic valve comprises a valve body, a valve element, a laser displacement sensor, a pressure sensor and a driving unit. The valve element is arranged in the valve body, one end of the valve element is connected with the driving unit, the other end of the valve element is provided with a detection part, the laser displacement sensor is arranged in front of the detection part, the detection part moves within the detection range of the laser displacement sensor, and the laser displacement sensor emits laser towards the end face of the detection part and receives reflected light of the end face of the valve element at a certain angle. The valve body is provided with a working oil port, an oil inlet and an oil return port in the axial direction, the working oil port is communicated with an external load, and the pressure sensor is arranged at the working oil port. Compared with the prior art, accurate, reliable and efficient detection of the displacement of the valve element is achieved through the non-contact laser displacement sensor, the on-off state, the flow size and the flow direction of a valve oil port are conveniently controlled, and accurate control and reliable operation of a whole hydraulic system are facilitated.

The utility model discloses a simple valve oil seal installation tool which comprises a support, two sets of long-strip nuts, a stud and a sleeve, the two sets of long-strip nuts comprise the first long-strip nut and the second long-strip nut, and the first long-strip nut and the second long-strip nut are arranged on the left side and the right side of the lower end of the support respectively. The stud comprises a first stud and a second bolt, the first stud is arranged in the first long-strip nut, the second stud is arranged in the second long-strip nut, a base is arranged on the first stud and used for fixing the bottom of the air valve, a sleeve is arranged on the second bolt, and an oil seal is installed on the sleeve in a downward pressing mode. Compared with a traditional manual installation method, rapid and accurate installation of the oil seal is achieved in a mechanical mode, the installation time is greatly shortened, and the working efficiency is improved.

The utility model relates to the technical field of oil cylinders, and discloses a quick-closing valve oil cylinder assembly which comprises an oil cylinder shell, the left side of the oil cylinder shell is communicated with a pressure stabilizing cylinder, an oil inlet is formed in the top end of the right side of the outer wall of the pressure stabilizing cylinder, and a pressure top plate is connected to the lower middle portion of the inner wall of the oil cylinder shell in a sliding mode. A top rod is fixedly connected to the bottom end of the pressure top plate, a rotating shaft is arranged in the middle of the right side of the oil cylinder shell, a reversing rod is fixedly connected to the right side of the rotating shaft, a reversing ball is fixedly connected to the left side of the rotating shaft, and the reversing ball is arranged in the middle of the inner wall of the oil cylinder shell. The right side of the top wall and the right side of the bottom wall of the reversing ball are each provided with a straight-through groove, and the two straight-through grooves communicate with each other. According to the hydraulic oil cylinder, the reversing rod is operated to enable the reversing ball fixedly connected with the left side of the rotating shaft to rotate, so that different flow direction states are achieved, control over hydraulic oil and flow direction switching are achieved, and the requirement for rapid closing of the oil cylinder is met.

The invention discloses an anti-backflow compact distribution valve suitable for a high-pressure upward conveying working condition, which comprises a suction valve shell, a transition shell and a discharge port shell, a discharge port of the suction valve shell is communicated with a feed port of the transition shell, and a discharge port of the transition shell is communicated with a feed port of the discharge port shell; a suction valve oil cylinder with a piston rod is arranged at the top of the suction valve shell, the piston rod of the suction valve oil cylinder extends into a working cavity of the suction valve shell, a suction cone valve is arranged at the end, extending into the working cavity of the suction valve shell, of the piston rod of the suction valve oil cylinder, a port B is formed in the side end of the suction valve shell, a suction valve seat is arranged on the inner side of the port B, and a port C is formed in the side end of the transition shell. A pressure valve oil cylinder with a piston rod is arranged at the top of the discharging port shell, the piston rod of the pressure valve oil cylinder penetrates through a working cavity of the discharging port shell, a pressure cone valve is arranged at the end of a feeding port of the discharging port shell, a pressure valve seat is arranged on the inner side of the feeding port of the discharging port shell, and a discharging port is formed in the discharging port shell.

The application discloses a double-valve oil injector reliability test system, and belongs to the technical field of monitoring of test systems, and comprises a fuel supply and recovery subsystem, an oil tank, an oil injection part, an oil injector tool and a control unit, the inlet end of the oil injection part is communicated with the oil tank, the outlet end of the oil injection part is communicated with the oil inlet end of the double-valve oil injector through the oil injector tool, the oil injector tool is further used for bearing the oil injector and taking fuel, and the control unit is used for controlling fuel pressure, fuel injection amount and fuel injection frequency; and a monitoring subsystem is used for controlling and monitoring the operation of the fuel supply and recovery module and comprises an image acquisition module, wherein the image acquisition module is used for acquiring spray characteristic images of the double-valve oil injector. The application can timely monitor whether the double-valve oil injector leaks oil.

The present invention provides a regulating valve oil mist lubrication device, which belongs to the technical field of oil mist lubrication, and includes an air supply pipe, a diameter reducing mechanism, a suction pipe and a flow meter. One end of the air supply pipe is connected to an air pump, and the other end is connected to a pneumatic regulating valve; a plurality of variable diameter pipes are arranged on the air supply pipe; the diameter reducing mechanism is arranged on the variable diameter pipe, and is used to change the inner diameter of the variable diameter pipe; there are a plurality of suction pipes, one end of which is connected to the side wall of the variable diameter pipe, and the other end is connected to an oil tank for loading lubricating oil, and is used to transport lubricating oil into the air supply pipe; the flow meter is arranged on the suction pipe, and is used to measure the flow rate of lubricating oil in the suction pipe. The regulating valve oil mist lubrication device provided by the present invention, when the pressure difference between the air supply pipe and the variable diameter pipe is greater than the force required to suck the lubricating oil in the oil tank into the variable diameter pipe through the suction pipe, the lubricating oil is sucked into the variable diameter pipe to form oil mist, which plays a lubricating role on the components in the pneumatic regulating valve, and prevents the components in the pneumatic regulating valve from getting stuck.

The invention relates to a multi-high-speed switch valve collaborative load port independent system and a control method thereof, and belongs to the technical field of high-speed switch valve electro-hydraulic control. The system is composed of a hydraulic transmission structure and an electric control system and mainly comprises an asymmetric hydraulic cylinder, six high-speed switch valves, a displacement sensor and two pressure sensors. Wherein the four high-speed switch valves form a full-bridge loop to achieve independent control over two cavities of the actuator, and the two oil return branches are each connected with one high-speed switch valve in parallel to form a parallel oil return valve set so as to improve the oil return through-flow capacity. According to the control method, a single-valve oil return mode and a parallel flow expansion oil return mode are set, and mode switching is conducted according to a speed threshold value or a back pressure error threshold value; on the basis, a self-adaptive robust controller is designed to achieve pressure-flow compound control, and then position tracking and backpressure stable control are achieved. While the structure is kept compact and easy to integrate, high-precision control and low energy consumption of the system can be considered.

The utility model discloses a novel non-stop ash discharging device for a fixed bed gas producer, belongs to the field of devices for fixed bed gas producers, and aims to provide a non-stop ash discharging device which improves the working efficiency, reduces the emission of toxic and harmful gases and completely eradicates safety accidents. The sealing structure comprises an upper valve, an upper valve oil cylinder, an oil cylinder support, a sealing filler assembly, a valve rod, a valve element, a transition short section, an ash hopper, an ash discharging round door and an ash discharging oil cylinder, the upper valve is provided with the transition short section, an original ash discharging square opening is transited into a round opening, the round opening is provided with a sealing face, the sealing effect is better, two sealing assemblies are arranged on the outer side of the valve rod, and the valve rod is sealed without air leakage.