阅读说明：本技术 一种气控液压阀 (Pneumatic control hydraulic valve ) 是由 刘恒鑫 付俊杰 于 2021-07-22 设计创作，主要内容包括：本发明涉及液压阀技术领域,尤其是涉及一种气控液压阀,包括液压阀主体,所述液压阀主体的前端外表面开设有注液口,所述注液口的环形内表面开设有滑槽,所述滑槽内部滑动连接有滑块,所述滑块远离滑槽的一侧外表面固定连接有过滤环,所述过滤环后端设有顶针,所述顶针的两端均为耐磨头,所述顶针穿过所述过滤环并与所述过滤环滑动连接,所述注液口的环形内表面开设有翻槽,所述翻槽的内表面两侧均开设有转槽,所述转槽内部转动连接有转杆,所述滑槽内表面后端固定连接有弹簧,使用者将注液管通过螺纹拧进注液口,此时注液管抵制过滤环沿着滑槽向后运动,此时顶针抵制到翻板,继续转动注液管过滤环继续后移,顶针将翻板推开。(The invention relates to the technical field of hydraulic valves, in particular to a pneumatic control hydraulic valve, which comprises a hydraulic valve main body, wherein the outer surface of the front end of the hydraulic valve main body is provided with a liquid injection port, the annular inner surface of the liquid injection port is provided with a sliding chute, a sliding block is connected inside the sliding chute in a sliding manner, the outer surface of one side of the sliding block, which is far away from the sliding chute, is fixedly connected with a filter ring, the rear end of the filter ring is provided with a thimble, two ends of the thimble are respectively provided with a wear-resistant head, the thimble penetrates through the filter ring and is connected with the filter ring in a sliding manner, the annular inner surface of the liquid injection port is provided with a turnover groove, two sides of the inner surface of the turnover groove are respectively provided with a rotary groove, the inner surface of the rotary groove is rotatably connected with a rotary rod, the rear end of the inner surface of the sliding chute is fixedly connected with a spring, a user screws a liquid injection pipe into the liquid injection port through threads, and then the liquid injection pipe resists backward movement of the filter ring along the sliding chute, at the moment, the thimble is resisted to the turning plate, the liquid injection pipe filter ring is continuously rotated to move backwards, and the thimble pushes the turning plate away.)

1. The utility model provides a gas accuse hydrovalve, includes hydrovalve main part (1), its characterized in that: the hydraulic valve is characterized in that a liquid injection port (2) is formed in the outer surface of the front end of the hydraulic valve main body (1), a sliding groove (21) is formed in the annular inner surface of the liquid injection port (2), a sliding block (31) is connected to the inside of the sliding groove (21) in a sliding manner, a filtering ring (3) is fixedly connected to the outer surface of one side, away from the sliding groove (21), of the sliding block (31), a thimble (32) is arranged at the rear end of the filtering ring (3), two ends of the thimble (32) are wear-resistant heads (33), the thimble (32) penetrates through the filtering ring (3) and is connected with the filtering ring (3) in a sliding manner, a turnover groove (11) is formed in the annular inner surface of the liquid injection port (2), rotary grooves (12) are formed in two sides of the inner surface of the turnover groove (11), a rotary rod (13) is rotatably connected to the inside of the rotary groove (12), and a turnover plate (15) is fixedly connected to the outer surface of one side, away from the rotary rod (13), the rear end of the inner surface of the sliding groove (21) is fixedly connected with a spring (14);

the inner side of the liquid injection port (2) is provided with a locking mechanism (4), the locking mechanism (4) comprises a movable groove (41) arranged on the inner side of the hydraulic valve main body (1), the movable groove (41) is circumferentially distributed around the liquid injection port (2), one end of the movable groove (41) positioned on the outer side of the liquid injection port (2) is communicated to the liquid injection port (2) through a first sliding hole (42), the other end of the movable groove (41) is connected to the liquid injection port (2) through a second sliding hole (43), the inner side of the first sliding hole (42) is slidably connected with a first lock tongue, the second sliding hole (43) is slidably connected with a second lock tongue, a linkage rod (44) is arranged in the movable groove (41), the middle part of the linkage rod (44) is hinged with the inner wall of the movable groove (41), one end, close to the first lock tongue, of the linkage rod (44) is connected with a return spring (47), the return spring (47) is used for driving the linkage rod (44) to rotate towards one side of the first sliding hole (42);

the first lock tongue comprises a first sliding sealing column (45), the height of the first sliding sealing column (45) is equal to that of the first sliding hole (42), a wedge-shaped plate (46) is arranged on the first sliding sealing column (45) close to the axis of the liquid injection port (2), and the inclined plane of the wedge-shaped plate (46) faces the outer side of the liquid injection port (2);

the second bolt comprises a second sliding sealing column (48), one end, close to the axis of the liquid injection port (2), of the second sealing column is hinged with a ratchet (49), the ratchet (49) inclines towards the inner side of the liquid injection port (2), and an elastic sheet (410) is connected between the ratchet (49) and the second sliding sealing column (48).

2. A pneumatically controlled hydraulic valve according to claim 1, wherein: the turning plate is characterized in that the rotating rod (13) is matched with the rotating groove (12) correspondingly, the turning plate (15) is matched with the turning groove (11) correspondingly and movably connected with the rotating groove (12) through the rotating rod (13), the turning groove (11) and the turning plate (15) are designed to be rectangular structures, and a first magnet (22) is fixedly connected to the front end of the inner surface of the turning groove (11) and the corresponding position of the turning plate (15).

3. A pneumatically controlled hydraulic valve according to claim 1, wherein: the sliding block (31) is matched with the sliding groove (21) correspondingly, the size of the filter ring (3) is the same as that of the liquid injection port (2), and the filter ring (3) is movably connected with the liquid injection port (2) through the sliding block (31) and the sliding groove (21).

4. A pneumatically controlled hydraulic valve according to claim 1, wherein: the annular inner surface of the liquid injection port (2) is provided with threads, and the annular inner surface of the filter ring (3) is fixedly connected with a filter screen.

5. A pneumatically controlled hydraulic valve according to claim 1, wherein: the sliding groove (21) is not opened, the front end of the spring (14) is in contact with the sliding block (31), and the outer surface of the front end of the turning plate (15) is fixedly connected with a second magnet (16).

6. A pneumatically controlled hydraulic valve according to claim 1, wherein: the length of the thimble (32) is larger than the distance from the filter ring (3) to the turning plate (15).

7. A pneumatically controlled hydraulic valve according to claim 1, wherein: one end of the lower end of the ratchet (49) close to the inner side of the liquid injection port (2) is of a smooth spherical structure.

Technical Field

The invention relates to the technical field of hydraulic valves, in particular to a pneumatic control hydraulic valve.

Background

The hydraulic valve is an automatic element operated by pressure oil, is controlled by the pressure oil of a distribution valve, is usually combined with an electromagnetic distribution valve for use, can be used for remotely controlling the on-off of oil, gas and water pipeline systems of hydropower stations, is usually used for clamping, controlling, lubricating and other oil paths, has a direct action type and a pilot type, and is multipurpose pilot type, and is classified according to functions: flow valve, pressure valve, directional valve.

Prior patent (publication No. CN 209704961U): the invention relates to a pneumatic control hydraulic valve, and belongs to the field of hydraulic equipment. The pneumatic control hydraulic valve comprises a hydraulic valve and an air pressure pushing device connected to the hydraulic valve, the hydraulic valve comprises a valve body and a valve core arranged in the valve body, the air pressure pushing device comprises a cylinder body, a piston arranged in the cylinder body, a push rod connected to the piston and a guide sleeve connected to the cylinder body and used for guiding the piston, a sealing sleeve is arranged at the joint of the air pressure pushing device and the hydraulic valve, and the valve body further comprises an elastic device used for pushing the valve core to rebound. The pneumatic control hydraulic valve controls the position of the valve core through the air pressure pushing device, can realize the on-off of large-flow pipeline liquid, overcomes the defects that the hydraulic valve in the prior art has small application range and cannot control large-flow pipelines, and has simple structure, practical and convenient installation and good sealing effect.

In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved: 1. liquid conveyed by the hydraulic valve during operation contains a small amount of impurities, and the impurities are accumulated in the valve body in a large amount along with the increase of the service life, so that the hydraulic valve is blocked, the operation of the hydraulic valve is influenced, and the hydraulic valve is damaged; 2. when the hydraulic valve is maintained, the liquid injection pipe needs to be screwed off through threads, and at the moment, a small amount of liquid contained in the hydraulic valve flows out from the liquid injection port, so that the clean working environment is polluted.

To this end, a pneumatically controlled hydraulic valve is proposed.

Disclosure of Invention

The invention aims to provide a pneumatic control hydraulic valve to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a pneumatic control hydraulic valve comprises a hydraulic valve main body, wherein a liquid injection port is formed in the outer surface of the front end of the hydraulic valve main body, a sliding groove is formed in the annular inner surface of the liquid injection port, a sliding block is connected inside the sliding groove in a sliding mode, a filtering ring is fixedly connected to the outer surface of one side, away from the sliding groove, of the sliding block, a thimble is arranged at the rear end of the filtering ring, two ends of the thimble are wear-resistant heads, the thimble penetrates through the filtering ring and is connected with the filtering ring in a sliding mode, a turning groove is formed in the annular inner surface of the liquid injection port, turning grooves are formed in two sides of the inner surface of the turning groove, a rotating rod is rotatably connected inside the turning groove, and a spring is fixedly connected to the rear end of the inner surface of the sliding groove;

the inner side of the liquid injection port is provided with a locking mechanism, the locking mechanism comprises a movable groove arranged on the inner side of the hydraulic valve main body, the movable groove is circumferentially distributed around the liquid injection port, one end, located on the outer side of the liquid injection port, of the movable groove is communicated to the liquid injection port through a first sliding hole, the other end of the movable groove is connected to the liquid injection port through a second sliding hole, the inner side of the first sliding hole is slidably connected with a first lock tongue, a second lock tongue is slidably connected into the second sliding hole, a linkage rod is arranged in the movable groove, the middle of the linkage rod is hinged to the inner wall of the movable groove, one end, close to the first lock tongue, of the linkage rod is connected with a reset spring, and the reset spring is used for driving the linkage rod to rotate towards one side of the first sliding hole;

the first lock tongue comprises a first sliding sealing column, the height of the first sliding sealing column is equal to that of the first sliding hole, a wedge-shaped plate is arranged on the axis of the first sliding sealing column, which is close to the liquid injection port, and the inclined plane of the wedge-shaped plate faces the outer side of the liquid injection port;

the second spring bolt comprises a second sliding sealing column, one end, close to the axis of the liquid injection port, of the second sealing column is hinged with a ratchet, the ratchet inclines towards the inner side of the liquid injection port, and an elastic sheet is connected between the ratchet and the second sliding sealing column.

By adopting the technical scheme, a user screws the liquid injection pipe into the liquid injection port through the threads, the liquid injection pipe resists backward movement of the filter ring along the sliding groove at the moment, the sliding block extrudes the spring, the ejector pin is driven to move backward and resist the turning plate, the liquid injection pipe filter ring and the ejector pin continue to move backward by continuing rotating, the ejector pin pushes the turning plate away, and the inside of the liquid injection port is in a passage state at the moment.

Preferably, the rotating rod is matched with the rotating groove correspondingly, the turning plate is matched with the turning groove correspondingly and is movably connected with the rotating groove through the rotating rod, the turning groove and the turning plate are designed to be rectangular in structure, and the front end of the inner surface of the turning groove is fixedly connected with the first magnet at a position corresponding to the turning plate.

Through adopting above-mentioned technical scheme, turn over the board and pass through the bull stick and turn over the inside upset of groove to can adjust the state of annotating the liquid mouth.

Preferably, the sliding block is matched with the sliding groove correspondingly, the size of the filtering ring is the same as that of the liquid injection port, and the filtering ring is movably connected with the liquid injection port through the sliding block and the sliding groove.

Through adopting above-mentioned technical scheme, filter ring is in annotating liquid mouthful inside through the slider along the spout motion.

Preferably, the annular inner surface of the liquid injection port is provided with threads, and the annular inner surface of the filter ring is fixedly connected with a filter screen.

Through adopting above-mentioned technical scheme, annotate the liquid pipe and pass through screw thread and hydrovalve threaded connection, annotate the liquid pipe and resist the filter ring when threaded connection, make its backward movement, the filter screen is with the separation of impurity outside.

Preferably, the sliding groove is in an open state, the front end of the spring is in contact with the sliding block, and the outer surface of the front end of the turning plate is fixedly connected with a second magnet.

Through adopting above-mentioned technical scheme, the spout of open mode makes the clearance of can taking off of filtration ring, turns over the board and passes through magnet two and magnet one and turn over groove magnetic force and adsorb.

Preferably, the length of the thimble is greater than the distance from the filter ring to the turning plate.

By adopting the technical scheme, the filter ring is resisted by the liquid injection port to move backwards, the thimble contacts the turnover plate to push the turnover plate open, and the liquid injection port is in a passage state.

Preferably, one end of the lower end of the ratchet close to the inner side of the liquid injection port is of a smooth spherical structure.

Through adopting above-mentioned technical scheme, ratchet and filter ring break away from when can make things convenient for the second spring bolt to retract.

Compared with the prior art, the invention has the beneficial effects that:

1. the sliding groove is formed in the annular outer surface of the liquid injection port, the sliding groove is movably connected with the filter ring in a matched mode with the liquid injection port, a user aligns the liquid injection pipe to the liquid injection port, the liquid injection pipe is screwed into the liquid injection port through threads and moves backwards, the filter ring moves backwards along the sliding groove through the sliding block under the resistance of the liquid injection pipe at the moment, meanwhile, the sliding block extrudes the spring inside the sliding groove, and impurities can be blocked outside the hydraulic valve main body through the filter ring when the liquid injection pipe is injected through the structure;

2. the thimble is connected with the filter ring in a sliding manner, the thimble moves backwards along the sliding groove along with the filter ring while being in threaded connection with the filter ring, a turning groove is formed in the annular inner surface of the liquid injection port, a turning plate is movably connected with the turning groove through a rotating rod inside the turning groove, the thimble moves backwards to be in contact with the turning plate, the filter ring continues moving backwards at the moment, the sliding block is in contact with a spring fixedly connected with the inside of the sliding groove, the thimble resists the turning plate to turn backwards, the liquid injection port is in a passage state at the moment, the liquid injection pipe is screwed out when the main body of the hydraulic valve needs to be maintained, the thimble is not subjected to extrusion force, the thimble is pressed outwards by the turning plate under the action of the self gravity of the turning plate and the suction force of the second magnet and the first magnet, and the turning plate and the turning groove are closed again to enable the liquid injection port to be in a closed state to prevent the liquid inside from flowing back;

3. after the liquid injection pipe is screwed out, the first lock tongue is not extruded any more, the first lock tongue is popped outwards, the second lock tongue is retracted, the filter ring rapidly moves forwards along the sliding groove under the action of the spring and impacts the second lock tongue, and dirt on the filter ring can be knocked off through impact, so that the use effect and the service life of the filter ring are ensured;

4. the user can manually press first spring bolt to filter the ring and no longer by the lock, make slider and spout break away from, make to filter the ring and can easily take out, make through this structure that the inside liquid of hydrovalve main part can not flow when maintaining the hydrovalve main part and pollute the external environment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is a combined view of the flap and the pouring outlet of the present invention;

FIG. 3 is a view of the chute of the present invention in combination with a filter ring;

FIG. 4 is a combination view of the flap and the flap slot of the present invention;

fig. 5 is an enlarged view of the area a of fig. 2.

Description of reference numerals:

1. a hydraulic valve body; 11. turning over the groove; 12. rotating the groove; 13. a rotating rod; 14. a spring; 15. turning over a plate; 16. a second magnet; 2. a liquid injection port; 21. a chute; 22. a magnet I; 3. a filter ring; 31. a slider; 32. a thimble; 33. a wear-resistant head; 4. a locking mechanism; 41. a movable groove; 42. a first slide hole; 43. a second slide hole; 44. a linkage rod; 45. a first sliding seal post; 46. a wedge plate; 47. a return spring; 48. a second sliding seal post; 49. a ratchet; 410. an elastic sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution:

as shown in fig. 1 to 5, a pneumatic control hydraulic valve comprises a hydraulic valve body 1, wherein a liquid injection port 2 is formed in the outer surface of the front end of the hydraulic valve body 1, a sliding groove 21 is formed in the annular inner surface of the liquid injection port 2, a sliding block 31 is slidably connected inside the sliding groove 21, a filter ring 3 is fixedly connected to the outer surface of one side, away from the sliding groove 21, of the sliding block 31, a thimble 32 is arranged at the rear end of the filter ring 3, two ends of the thimble 32 are wear-resistant heads 33, the thimble 32 penetrates through the filter ring 3 and is slidably connected with the filter ring 3, a turning groove 11 is formed in the annular inner surface of the liquid injection port 2, turning grooves 12 are formed in two sides of the inner surface of the turning groove 11, a turning rod 13 is rotatably connected inside the turning groove 12, a spring 14 is fixedly connected to the rear end of the inner surface of the sliding groove 21, a user screws the liquid injection pipe into the liquid injection port 2 through a screw thread, and then the liquid injection pipe resists backward movement of the filter ring 3 along the sliding groove 21, the slide block 31 extrudes the spring 14, drives the thimble 32 to move backwards and resist the turning plate 15, continues to rotate the liquid injection pipe filter ring 3 and the thimble 32 to move backwards, the thimble 32 pushes the turning plate 15 away, and the inside of the liquid injection port 2 is in a passage state at the moment;

annotate the inboard of liquid mouth 2 and be equipped with locking mechanism 4, locking mechanism 4 is including setting up at the inboard movable groove 41 of hydrovalve main part 1, movable groove 41 distributes around annotating liquid mouth 2 circumference, the one end that movable groove 41 is located annotates the liquid mouth 2 outside communicates to annotating liquid mouth 2 through first sliding hole 42, the other end of movable groove 41 is connected to annotating liquid mouth 2 through second sliding hole 43, the inboard sliding connection of first sliding hole 42 has first spring bolt, sliding connection has the second spring bolt in the second sliding hole 43, be equipped with gangbar 44 in the movable groove 41, the middle part of gangbar 44 is articulated with the inner wall of movable groove 41, the one end that gangbar 44 is close to first spring bolt is connected with reset spring 47, reset spring 47 is used for driving gangbar 44 and rotates to first sliding hole 42 one side.

The first lock tongue comprises a first sliding sealing column 45, the height of the first sliding sealing column 45 is equal to that of the first sliding hole 42, a wedge-shaped plate 46 is arranged on the first sliding sealing column 45 close to the axis of the liquid injection port 2, and the inclined plane of the wedge-shaped plate 46 faces the outer side of the liquid injection port 2;

the second lock tongue comprises a second sliding sealing column 48, one end of the second sealing column, which is close to the axle center of the liquid filling port 2, is hinged with a ratchet 49, the ratchet 49 inclines towards the inner side of the liquid filling port 2, and an elastic sheet 410 is connected between the ratchet 49 and the second sliding sealing column 48. It should be noted that the elastic piece 410 not only is convenient for jacking up the ratchet 49, but also can pull one end of the ratchet 49 when the second lock tongue retracts, so as to prevent the ratchet 49 from being locked with the filter ring 3.

When the liquid injection pipe is screwed in, the liquid injection pipe can extrude the wedge-shaped plate 46, so that the wedge-shaped plate 46 moves towards the outside in the first sliding hole 42, the first lock tongue retracts to drive the linkage rod 44 to rotate, the second lock tongue at the other end of the linkage rod 44 can be pushed out outwards, and the filter ring 3 can pass through the ratchet 49 through the arrangement of the ratchet 49, and the ratchet 49 rebounds under the drive of the elastic sheet 410 to block the filter ring 3;

after the liquid injection pipe is screwed out, the first lock tongue is not extruded any more, the first lock tongue is ejected outwards under the action of the return spring 47, so that the second lock tongue is retracted, the filter ring 3 rapidly moves forwards along the sliding groove 21 under the action of the spring 14 and impacts the second lock tongue, and dirt on the filter ring 3 can be knocked off through impact, so that the using effect and the service life of the filter ring 3 are ensured;

the user can manually press the first lock tongue to filter ring 3 and no longer be locked, make slider 31 and spout 21 break away from, make filter ring 3 easily take out, make through this structure that the inside liquid of hydrovalve main part 1 can not flow out when maintaining hydrovalve main part 1 and pollute the external environment.

The lower end of the ratchet 49 is a smooth spherical structure at the end close to the inner side of the liquid injection port 2. The ratchet 49 can be conveniently separated from the filter ring 3 when the second bolt retracts.

Specifically, as shown in fig. 2, the rotating rod 13 is correspondingly matched with the rotating groove 12, the turning plate 15 is correspondingly matched with the turning groove 11 and is movably connected with the rotating groove 12 through the rotating rod 13, the turning groove 11 and the turning plate 15 are designed to be rectangular structures, the first magnet 22 is fixedly connected to the position, corresponding to the turning plate 15, of the front end of the inner surface of the turning groove 11, and the turning plate 15 is turned inside the turning groove 11 through the rotating rod 13, so that the state of the liquid injection port 2 can be adjusted.

Specifically, as shown in fig. 3, the slide block 31 and the slide groove 21 are correspondingly matched, the size of the filter ring 3 is the same as that of the pouring port 2, the filter ring 3 and the pouring port 2 are movably connected with the slide groove 21 through the slide block 31, and the filter ring 3 moves along the slide groove 21 through the slide block 31 inside the pouring port 2.

Specifically, as shown in fig. 2, the annular inner surface of the liquid injection port 2 is provided with threads, the annular inner surface of the filter ring 3 is fixedly connected with a filter screen, the liquid injection pipe is in threaded connection with the hydraulic valve main body 1 through the threads, the liquid injection pipe resists against the filter ring 3 to move backwards during threaded connection, and the filter screen blocks impurities outside.

Specifically, as shown in fig. 1, the chute 21 is in an open state, the front end of the spring 14 is in contact with the slider 31, the second magnet 16 is fixedly connected to the outer surface of the front end of the turning plate 15, the filter ring 3 can be removed and cleaned by the chute 21 in the open state, and the turning plate 15 is magnetically adsorbed to the first magnet 22 and the turning groove 11 through the second magnet 16.

Specifically, as shown in fig. 2, the length of the thimble 32 is greater than the distance from the filter ring 3 to the flap 15, the filter ring 3 is resisted from moving backwards by the pouring outlet 2, and the thimble 32 contacts the flap 15 to push it open, so that the pouring outlet 2 is in a passage state.

The working principle is as follows: through the annular outer surface of the liquid injection port 2 is provided with the sliding groove 21, the sliding groove 21 is matched with the liquid injection port 2 and is movably connected with the filter ring 3, a user aligns the liquid injection pipe with the liquid injection port 2, the liquid injection pipe is screwed into the liquid injection port 2 through threads and moves backwards, at the same time, the filter ring 3 moves backwards along the sliding groove 21 through the slide block 31 under the resistance of the liquid injection pipe, simultaneously, the slide block 31 extrudes the spring 14 in the sliding groove 21, the structure ensures that impurities can be blocked outside the hydraulic valve main body 1 through the filter ring 3 when the liquid injection pipe is injected with liquid, through the thimble 32 arranged at the rear end of the filter ring 3, the thimble 32 and the filter ring 3 both move backwards along the sliding groove 21 when the liquid injection pipe is connected through threads, the turnover groove 11 is arranged on the annular inner surface of the liquid injection port 2, the turnover plate 15 is movably connected with the rotary groove 12 through the rotary rod 13 in the turnover groove 11, and the thimble 32 moves backwards and contacts with the turnover plate 15, at this time, the filter ring 3 continues to move backwards, so that the slide block 31 is contacted with the spring 14 fixedly connected with the inside of the slide groove 21, the thimble 32 is turned backwards against the turning plate 15, at this time, the liquid injection port 2 is in a passage state, when the main body 1 of the hydraulic valve needs to be maintained, the liquid injection pipe is screwed out, the thimble 32 is not extruded any more, under the action of the gravity of the turning plate 15 and the suction force of the second magnet 16 and the first magnet 22, the thimble 32 is pressed outwards by the turning plate 15, the turning plate 15 and the turning groove 11 are closed again to ensure that the liquid injection port 2 is in a closed state to prevent the liquid inside from flowing back, when the liquid injection pipe is screwed out, the first lock tongue is not extruded any more, the first lock tongue is ejected outwards, the second lock tongue is retracted, the filter ring 3 rapidly moves forwards along the sliding groove 21 under the action of the spring 14 and impacts the second lock tongue, and through impact, dirt on the filter ring 3 can be knocked off, so that the use effect and the service life of the filter ring 3 are ensured;

a user can manually press the first lock tongue, so that the filter ring 3 is not locked any more, the slide block 31 is separated from the slide groove 21, the filter ring 3 can be easily taken out, and liquid in the hydraulic valve main body 1 cannot flow out to pollute the external environment when the hydraulic valve main body 1 is maintained through the structure;

when the liquid injection pipe is screwed in, the liquid injection pipe can extrude the wedge-shaped plate 46, so that the wedge-shaped plate 46 moves towards the outside in the first sliding hole 42, the first lock tongue retracts, the linkage rod 44 is driven to rotate, the second lock tongue at the other end of the linkage rod 44 is pushed out outwards, the filter ring 3 passes through the ratchet 49 through the arrangement of the ratchet 49, and the ratchet 49 rebounds under the drive of the elastic sheet 410 to block the filter ring 3;

after the liquid injection pipe is screwed out, the first lock tongue is not extruded any more, the first lock tongue is ejected outwards under the action of the return spring 47, so that the second lock tongue is retracted, the filter ring 3 rapidly moves forwards along the sliding groove 21 under the action of the spring 14 and impacts the second lock tongue, and dirt on the filter ring 3 can be knocked off through impact, so that the using effect and the service life of the filter ring 3 are ensured;

the user can manually press the first lock tongue to filter ring 3 and no longer be locked, make slider 31 and spout 21 break away from, make filter ring 3 easily take out, make through this structure that the inside liquid of hydrovalve main part 1 can not flow out when maintaining hydrovalve main part 1 and pollute the external environment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.