CN213017015U

CN213017015U - Push-button type manual pilot valve

Info

Publication number: CN213017015U
Application number: CN202021232321.1U
Authority: CN
Inventors: 李福洪; 朱述群; 谢瑞
Original assignee: Julong Group Wuhu Xinglong Hydraulic Co Ltd
Current assignee: Julong Group Wuhu Xinglong Hydraulic Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-04-20
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses a button type manual pilot valve, which comprises a valve body, a valve core component arranged inside the valve body, a rotatable pressure rod arranged on the valve body and a gland component used for bearing the pressing force applied from the outside and converting the pressing force into the operating force for controlling the pressure rod to rotate along a first direction; when the pressure lever rotates along the first direction, the valve core assembly can be switched from a closed state to an open state. The utility model discloses a manual pilot valve of button type adopts manual push type structure, can reduce the operating force that needs when opening for convenient operation is laborsaving, and the structure is compacter moreover.

Description

Push-button type manual pilot valve

Technical Field

The utility model belongs to the technical field of the colliery is fully mechanized and is adopted hydraulic support, specifically speaking, the utility model relates to a manual pilot valve of button.

Background

Pilot valves are auxiliary valves used to control the operation of other valves or components, and are often used in situations where a small flow pilot valve controls a large flow main control valve. Patent document No. CN101235833A discloses a pilot valve, which includes a valve body, a valve core disposed in the valve body, and a handle for controlling the valve core, wherein the valve body is provided with a liquid inlet, a liquid control port and a liquid return port, the liquid inlet and the liquid return port are respectively provided with a switch device, and the opening or closing of the liquid inlet and the liquid return port can be controlled by controlling the position of the switch device via the handle. The utility model discloses a pilot valve simple structure, convenient operation, but still there is following shortcoming in the in-service use: when the pilot valve of this kind of structure enters the liquid at the operating handle, need use great operating force, just can pull up the handle, this is because the inlet of pilot valve communicates with high-pressure liquid for the liquid inlet ball is being full of high-pressure liquid around, when the operating handle enters the liquid, not only need overcome the spring force that acts on the liquid inlet ball, still need overcome extra high-pressure hydraulic pressure force that acts on the liquid inlet ball, just can push away the liquid inlet ball that blocks up the ball seat mouth from ball seat mouth department.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a button manual pilot valve, the operating force that needs when the purpose reduces to open.

In order to realize the purpose, the utility model discloses the technical scheme who takes does: the push-button type manual pilot valve comprises a valve body, a valve core assembly arranged in the valve body, a pressure rod rotatably arranged on the valve body and a gland assembly used for bearing pressing force applied from the outside and converting the pressing force into operating force for controlling the pressure rod to rotate along a first direction; when the pressure lever rotates along the first direction, the valve core assembly can be switched from a closed state to an open state.

The valve element assembly comprises a push rod, a first sealing ball, a second sealing ball, a guide rod, a threaded sleeve, a guide sleeve, a ball seat, a first spring seat and a first reset spring, wherein the push rod is in contact with the pressure rod and is used for receiving pressure applied by the pressure rod, the guide sleeve is sleeved on the push rod, the ball seat is arranged between the threaded sleeve and the guide sleeve and sleeved on the guide rod, the first spring seat is movably arranged inside the threaded sleeve, the first reset spring is arranged between the first spring seat and the threaded sleeve, the first sealing ball is arranged inside the first spring seat, the second sealing ball is arranged inside the guide sleeve, and the second sealing ball is clamped between the guide rod and the push rod.

The valve core assembly further comprises a push rod sleeve sleeved on the push rod, and the guide sleeve is located between the ball seat and the push rod sleeve.

The compression bar is rotatably connected with the valve body through a rotating shaft, and the axis of the rotating shaft is perpendicular to the axis of the push rod.

The gland subassembly includes the gland body, portable setting and with the ejector pin that the depression bar contacted, set up briquetting on the ejector pin and set up on the gland body and the press cap that contacts with the briquetting, press the press cap and be used for bearing the external pressing force that applys to promote briquetting and ejector pin removal, the ejector pin promotes the depression bar is followed the first direction and is rotated.

The pressing cap is made of rubber.

The axis of the ejector rod is parallel to the axis of the valve core assembly, the pressing block is fixedly connected with one end of the ejector rod, and the pressing block is located between the ejector rod and the pressing cap.

The gland component further comprises a fixed seat connected with the gland body, a second spring seat connected with the fixed seat and sleeved on the ejector rod, and a second reset spring sleeved on the ejector rod and positioned between the second spring seat and the pressing block.

The second spring seat is in threaded connection with the fixed seat.

The valve body is provided with a containing cavity for containing the pressure rod, the gland component covers the containing cavity, and the gland body is connected with the valve body.

The utility model discloses a manual pilot valve of button type adopts manual push type structure, can reduce the operating force that needs when opening for convenient operation is laborsaving, and the structure is compacter moreover.

Drawings

The description includes the following figures, the contents shown are respectively:

fig. 1 is a sectional view of the push button type manual pilot valve of the present invention;

FIG. 2 is a side view of the push button manual pilot valve of the present invention;

FIG. 3 is a view in the direction A of FIG. 1;

FIG. 4 is a cross-sectional view of a main body portion of a push button manual pilot valve;

FIG. 5 is a side view of the main body portion of the push button manual pilot valve;

FIG. 6 is a cross-sectional view of the valve core assembly;

FIG. 7 is a cross-sectional view of the threaded insert;

FIG. 8 is a cross-sectional view of the ball seat;

FIG. 9 is a cross-sectional view of the guide sleeve;

figure 10 is a cross-sectional view of the gland assembly;

labeled as: 1. a gland body; 2. a valve body; 3. a threaded sleeve; 301. a liquid inlet hole; 4. a first spring seat; 5. a ball seat; 501. a first liquid passing hole; 502. a second liquid passing hole; 6. a guide sleeve; 601. a liquid return hole; 7. A push rod sleeve; 8. a first sealing ball; 9. a second sealing ball; 10. a guide bar; 11. a first return spring; 12. A push rod; 13. a top rod; 14. briquetting; 15. pressing the cap; 16. a fixed seat; 17. a second spring seat; 18. A second return spring; 19. a pressure lever; 20. a rotating shaft.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

It should be noted that, in the following embodiments, the "first" and "second" do not represent an absolute distinction relationship in structure and/or function, nor represent a sequential execution order, but merely for convenience of description.

As shown in fig. 1 to 10, the present invention provides a push button type manual pilot valve, which comprises a valve body 2, a valve core assembly disposed inside the valve body 2, a pressing rod 19 rotatably disposed on the valve body 2, and a pressing cover assembly for receiving a pressing force applied from the outside and converting the pressing force into an operating force for controlling the pressing rod 19 to rotate along a first direction; when the pressure lever 19 rotates in the first direction, the valve core assembly can be switched from the closed state to the open state.

Specifically, as shown in fig. 1 to 6, the valve body 2 is provided with a liquid inlet, a liquid return port and two working ports, the liquid inlet is a port P in fig. 3, the liquid return port is a port O in fig. 3, and the two working ports are a port a and a port B in fig. 3. The valve core assembly is arranged to be capable of being switched between an opening state and a closing state, when the valve core assembly is in the opening state, a liquid passage between the liquid inlet and the working port is opened to realize communication, and oil liquid in the liquid inlet flows to the working port through the valve core assembly; when the valve core assembly is in a closed state, a liquid passage between the liquid return port and the working port is opened to realize communication, and oil in the working port flows to the liquid return port through the valve core assembly.

As shown in fig. 6 to 8, the valve core assembly includes a push rod contacting with the pressure rod 19 and receiving the pressure applied by the pressure rod 19, a first sealing ball 8, a second sealing ball 9, a guide rod 10 disposed between the first sealing ball 8 and the second sealing ball 9, a threaded sleeve 3, a guide sleeve 6 sleeved on the push rod, a ball seat 5 disposed between the threaded sleeve 3 and the guide sleeve 6 and sleeved on the guide rod 10, a first spring seat 4 movably disposed inside the threaded sleeve 3, and a first return spring 11 disposed between the first spring seat 4 and the threaded sleeve 3, wherein the first sealing ball 8 is disposed inside the first spring seat 4, the second sealing ball 9 is disposed inside the guide sleeve 6, and the second sealing ball 9 is sandwiched between the guide rod 10 and the push rod. First ball 8 and second ball 9 are the spheroid, and first ball 8 is the same with the diameter size of second ball 9, and first ball 8 and second ball 9 are coaxial setting. The valve body 2 is provided with a valve cavity for accommodating the valve core assembly, the valve cavity is a circular cavity formed by extending from the first outer wall surface of the valve body 2 to the interior of the valve body 2, the threaded sleeve 3 is inserted into the valve cavity, and the threaded sleeve 3 is in threaded connection with the valve body 2, so that the valve body is convenient to disassemble and assemble. The ball seat 5 and the guide sleeve 6 are also positioned in the valve cavity, and the ball seat 5 is clamped between the screw sleeve 3 and the guide sleeve 6.

As shown in fig. 6 and 7, the screw sleeve 3 is a cylindrical member having an open end and a closed end, and has a hollow interior, the screw sleeve 3 has an external thread on an outer circumferential surface of the closed end, and the valve body 2 has an internal thread on an inner circumferential surface in the valve chamber. The first spring seat 4 is movably arranged in an inner cavity of the threaded sleeve 3, the first return spring 11 is also arranged in the inner cavity of the threaded sleeve 3, the first return spring 11 is a cylindrical helical spring and is a compression spring, the first return spring 11 is used for applying force to the first spring seat 4 to enable the first spring seat to move towards a position close to the ball seat 5 along the axial direction, and the first spring seat 4 and the threaded sleeve 3 are coaxially arranged. The screw sleeve 3 is provided with a liquid inlet hole 301, the liquid inlet hole 301 is communicated with the liquid inlet of the valve body 2, the liquid inlet hole 301 is a through hole which radially penetrates through the circular side wall of the screw sleeve 3, the liquid inlet hole 301 is a circular hole, the axis of the liquid inlet hole 301 is perpendicular to the axis of the screw sleeve 3, and the liquid inlet hole 301 is communicated with the inner cavity of the screw sleeve 3. The liquid inlet holes 301 are arranged in a plurality of numbers, and all the liquid inlet holes 301 are uniformly distributed on the screw sleeve 3 along the circumferential direction.

As shown in fig. 6 and 8, the ball seat 5 is a hollow circular ring-shaped member with both ends open, the ball seat 5 has a first liquid passing hole 501 and a second liquid passing hole 502, the first liquid passing hole 501 and the second liquid passing hole 502 communicate with a working port in the valve body 2, the first liquid passing hole 501 is used for guiding the oil liquid from the liquid inlet hole 301 of the screw sleeve 3 to the working port, and the second liquid passing hole 502 is used for guiding the oil liquid from the liquid return hole 601 of the guide sleeve 6 to the working port. The first liquid inlet hole 301 is a through hole radially penetrating through the circular side wall of the ball seat 5, the first liquid inlet hole 301 is a circular hole, an included angle is formed between the axis of the first liquid inlet hole 301 and the axis of the ball seat 5, the included angle is an acute angle, and the first liquid inlet hole 301 is communicated with the central hole of the return sleeve. The first liquid inlet holes 301 are provided in plurality, and all the first liquid inlet holes 301 are uniformly distributed on the ball seat 5 along the circumferential direction. The second liquid inlet hole 301 is a through hole radially penetrating through the circular side wall of the ball seat 5, the second liquid inlet hole 301 is a circular hole, an included angle is formed between the axis of the second liquid inlet hole 301 and the axis of the ball seat 5, the included angle is an acute angle, and the second liquid inlet hole 301 is communicated with the central hole of the ball seat 5. The second liquid inlet holes 301 are provided in plurality, and all the second liquid inlet holes 301 are uniformly distributed on the ball seat 5 along the circumferential direction.

As shown in fig. 6 and 9, the guide sleeve 6 is a hollow circular ring-shaped member with two open ends, the guide sleeve 6, the screw sleeve 3 and the ball seat 5 are coaxially arranged, the guide sleeve 6 has a liquid return hole 601, the liquid return hole 601 is communicated with a liquid return port of the valve body 2, the liquid return hole 601 is a through hole radially penetrating the circular side wall of the guide sleeve 6, the liquid return hole 601 is a circular hole, the axis of the liquid return hole 601 is perpendicular to the axis of the guide sleeve 6, and the liquid return hole 601 is communicated with the inner cavity of the guide sleeve 6. The liquid return holes 601 are arranged in a plurality, and all the liquid return holes 601 are uniformly distributed on the guide sleeve 6 along the circumferential direction.

As shown in fig. 6, the first sealing ball 8 is sandwiched between the first spring seat 4 and the guide rod 10, a first receiving groove is formed in an end portion of the first spring seat 4, the first sealing ball 8 is located in the first receiving groove, the first receiving groove is a groove formed by axially recessing the first spring seat 4 from a surface of the first spring seat 4 toward an end surface of the ball seat 5, the first receiving groove is a circular groove, a diameter of the first receiving groove is the same as a diameter of the first sealing ball 8, a depth of the first receiving groove is smaller than a diameter of the first sealing ball 8, the first sealing ball 8 and the first spring seat 4 are coaxially arranged, and the first spring seat 4, the screw sleeve 3 and the ball seat 5 are coaxially arranged. The guide rod 10 is a cylindrical rod body, the guide rod 10 is coaxially arranged with the first sealing ball 8 and the second sealing ball 9, one end of the guide rod 10 is contacted with the first sealing ball 8, and the other end of the guide rod 10 is contacted with the second sealing ball 9. The ball seat 5 plays a guiding role for the guide rod 10, the guide rod 10 and the ball seat 5 are coaxially arranged, and the guide rod 10 is inserted into a central hole of the ball seat 5. The second sealing ball 9 is clamped between the push rod and the guide rod 10, a second accommodating groove is formed in the end portion of the guide sleeve 6, the second sealing ball 9 is located in the second accommodating groove, the second accommodating groove is a groove formed by axially recessing the second sealing ball 9 from the end face of the guide sleeve 6 facing the ball seat 5 towards the inner portion of the guide sleeve 6, the second accommodating groove is a circular groove, the diameter of the second accommodating groove is the same as the diameter of the second sealing ball 9, the depth of the second accommodating groove is smaller than the diameter of the second sealing ball 9, the second sealing ball 9 and the guide sleeve 6 are coaxially arranged, and the push rod, the guide sleeve 6 and the ball seat 5 are coaxially arranged. The push rod is a cylindrical rod body, the push rod and the first sealing ball 8 and the second sealing ball 9 are coaxially arranged, one end of the push rod is in contact with the second sealing ball 9, and the other end of the push rod is in contact with the pressure rod 19.

As shown in fig. 6, the valve core assembly further includes a push rod sleeve 7 sleeved on the push rod, the guide sleeve 6 is located between the ball seat 5 and the push rod sleeve 7, and the screw sleeve 3, the ball seat 5, the guide sleeve 6 and the push rod sleeve 7 are sequentially arranged along the axial direction in the valve cavity of the valve body 2 and are fixedly disposed. The guide sleeve 6 and the push rod sleeve 7 play a role in guiding the push rod together, the push rod sleeve 7 is a hollow annular component with two open ends, the push rod penetrates through center holes of the push rod sleeve 7 and the guide sleeve 6, one end of the push rod is inserted into the second accommodating groove of the guide sleeve 6, the end of the push rod is in contact with the second sealing ball 9, the other end of the push rod extends out of the push rod sleeve 7 and is in contact with the pressure rod 19, and the guide rod 10 and the push rod can move along the axial direction.

The ball seat 5 is used for limiting the first sealing ball 8 and the second sealing ball 9 in the axial direction, and the ball seat 5 is matched with the first sealing ball 8 and the second sealing ball 9 to respectively cut off the communication between the liquid inlet hole 301 and the first liquid passing hole 501 and the communication between the liquid return hole 601 and the second liquid passing hole 502. The first terminal surface of ball seat 5 and the terminal surface laminating of swivel nut 3, the first terminal surface center department of ball seat 5 sets up first opening, and first opening is less than the diameter of first ball sealer 8 for circular opening and the diameter of first opening, first opening and first liquid hole 501 intercommunication of crossing. The second end face of ball seat 5 and the terminal surface laminating of guide pin bushing 6, the first end face and the second end face of ball seat 5 are the terminal surface at the axial relative both ends of ball seat 5, the second end face center department of ball seat 5 sets up the second opening, the diameter of second opening for circular opening and second opening is less than the diameter of second sealing ball 9, the second opening passes liquid hole 502 intercommunication with the second, in the axial of ball seat 5, first passing liquid hole 501 and second pass liquid hole 502 and be located between the first end face and the second end face of ball seat 5, and second passes liquid hole 502 and be located between second end face and the first passing liquid hole 501. After the first sealing ball 8 is embedded into the first opening, the first sealing ball 8 is in contact with the ball seat 5, a passage between the liquid inlet hole 301 and the first liquid passing hole 501 is cut off, the liquid inlet hole 301 and the first liquid passing hole 501 are not communicated, the valve core assembly is in a closed state, at the moment, the second sealing ball 9 is separated from the ball seat 5, and the second liquid passing hole 502 and the liquid returning hole 601 are in a communicated state; when the pilot valve needs to be opened, an operator manually presses the gland assembly to enable the pressure rod 19 to rotate, the pressure rod 19 pushes the push rod to move towards a position close to the ball seat 5 along the axial direction, the push rod pushes the second sealing ball 9 to move towards the second opening of the ball seat 5 until the second sealing ball 9 is embedded into the second opening, the second sealing ball 9 is in contact with the ball seat 5 to cut off a passage between the liquid return hole 601 and the second liquid passing hole 502, the liquid return hole 601 is not communicated with the second liquid passing hole 502, the second sealing ball 9 pushes the first sealing ball 8 to move towards a position far away from the ball seat 5 along the axial direction through the guide rod 10 while moving, the first sealing ball 8 is separated from the ball seat 5, the liquid inlet hole 301 is communicated with the first liquid passing hole 501, the valve core assembly is in an opening state, and the first return spring 11 is compressed.

As shown in fig. 1 and 4, the pressure rod 19 is rotatably connected to the valve body 2 via a rotating shaft 20, and the axis of the rotating shaft 20 is spatially perpendicular to the axis of the push rod. The pressing rod 19 has a certain length, the length direction of the pressing rod 19 is perpendicular to the axis of the rotating shaft 20, one end of the pressing rod 19 in the length direction is provided with a shaft hole through which the rotating shaft 20 passes, and the push rod is in contact with the pressing rod 19 at a position between two ends of the pressing rod 19 in the length direction. When the valve core assembly is switched from the closed state to the open state, the pressure rod 19 rotates along the first direction; when the valve core assembly is switched from the open state to the closed state, the pressure rod 19 rotates along the second direction; the first direction and the second direction are opposite directions, and if the first direction is clockwise, the second direction is counterclockwise. After an operator does not press the gland assembly, the operating force applied to the pressure rod 19 disappears, the first return spring 11 extends, under the action of the first return spring 11, the first spring seat 4 moves towards the position close to the ball seat 5 until the first sealing ball 8 is embedded into the first opening of the ball seat 5, the first sealing ball 8 is in contact with the ball seat 5, the first sealing ball 8 moves and simultaneously pushes the second sealing ball 9 to move towards the position far away from the ball seat 5 along the axial direction through the guide rod 10, the second sealing ball 9 is separated from the ball seat 5, the second sealing ball 9 pushes the push rod to also move towards the position far away from the ball seat 5 along the axial direction, the push rod pushes the pressure rod 19 to rotate along the second direction, the pressure rod 19 resets, and the valve core assembly is automatically switched to the closing state from the opening state.

As shown in fig. 1, 4 and 10, the gland assembly includes a gland body 1, a push rod 13 movably disposed and contacting with a pressure rod 19, a pressing block 14 disposed on the push rod 13, and a pressing cap 15 disposed on the gland body 1 and contacting with the pressing block 14, wherein the pressing cap 15 is used for bearing a pressing force applied from the outside to push the pressing block 14 and the push rod 13 to move, and the push rod 13 pushes the pressure rod 19 to rotate along a first direction. The valve body 2 is provided with a holding cavity for holding the pressure rod 19, the holding cavity is a cavity formed by recessing from the second outer wall surface of the valve body 2 to the inside of the valve body 2, the holding cavity is a rectangular cavity, the gland assembly covers the holding cavity, and the gland body 1 is connected with the valve body 2. The first outer wall surface and the second outer wall surface of the valve body 2 are two opposite outer wall surfaces in the width direction of the valve body 2, and the end part of the push rod extends into the accommodating cavity of the valve body 2. The end of the push rod 13 also extends into the containing cavity of the valve body 2, the press rod 19 is positioned between the push rod 13 and the push rod, and the push rod 13 is contacted with the press rod 19 at the position between the two ends of the press rod 19 in the length direction.

As shown in fig. 1, 4 and 10, the pressing cap 15 is made of an elastic material, preferably a rubber material, and the pressing cap 15 has an elastic property such that the pressing cap 15 can be elastically deformed by a certain amount after being pressed. The gland body 1 is provided with a mounting hole for accommodating the pressing cap 15, the mounting hole is a through hole which is arranged in a penetrating way along the thickness direction of the gland body 1, the thickness direction of the gland body 1 is parallel to the width direction of the valve body 2, and the thickness direction of the gland body 1 is parallel to the axis of the push rod. One end of the pressing cap 15 is located in the mounting hole, the other end of the pressing cap 15 penetrates through the mounting hole and then extends out of the gland body 1, the end of the pressing cap 15 is a closed end, and the closed end of the pressing cap 15 is used for being in contact with an operator and receiving pressing force applied by the operator. After an operator applies pressing force to the pressing cap 15, the closed end of the pressing cap 15 is recessed towards the mounting hole, the pressing cap 15 pushes the pressing block 14 to move, the pressing block 14 pushes the ejector rod 13 to move along the axial direction, the ejector rod 13 applies operating force to the pressing rod 19, the ejector rod 13 pushes the pressing rod 19 to rotate along the first direction, and then the valve core assembly is switched from the closed state to the open state.

As shown in fig. 1, 4 and 10, the push rod 13 is a cylindrical rod body, the axis of the push rod 13 is parallel to the axis of the valve core assembly (the axis of the valve core assembly is also the axis of the push rod), the pressing block 14 is fixedly connected with one end of the push rod 13, and the pressing block 14 is located between the push rod 13 and the pressing cap 15. One axial end of the ejector rod 13 is in contact with the pressure rod 19, the pressing block 14 is fixedly connected with the other axial end of the ejector rod 13, the pressing block 14 is a circular block-shaped component, the pressing block 14, the ejector rod 13 and the pressing cap 15 are coaxially arranged, the pressing block 14 is in contact with the pressing cap 15 in the center of the pressing cap 15, and the diameter of the pressing block 14 is larger than that of the ejector rod 13.

As shown in fig. 1, 4 and 10, the gland assembly further includes a fixed seat 16 connected to the gland body 1, a second spring seat 17 connected to the fixed seat 16 and sleeved on the push rod 13, and a second return spring 18 sleeved on the push rod 13 and located between the second spring seat 17 and the pressing block 14. The fixing seat 16 is inserted into the mounting hole of the gland body 1, the fixing seat 16 is fixedly connected with the gland body 1, the pressing block 14 is located in the inner cavity of the fixing seat 16, and the fixing seat 16 is used for limiting the pressing block 14 in the axial direction. The second return spring 18 is a compression spring for the cylindrical coil spring, the second spring seat 17 and the pressing block 14 are arranged oppositely, the second return spring 18 is sleeved on the ejector rod 13 and the second return spring 18 is clamped between the second spring seat 17 and the pressing block 14, the second return spring 18 is used for applying an elastic acting force to the pressing block 14 to enable the pressing block to move towards the position away from the second spring seat 17, the pressing block 14 is used for resetting, the ejector rod 13 and the pressing cap 15 are driven to reset synchronously when the pressing block 14 resets, and the distance between the second spring seat 17 and the pressing rod 19 is greater than the distance between the pressing block 14 and the pressing rod 19.

As shown in fig. 1, 4 and 10, the second spring seat 17 is preferably screwed to the fixed seat 16 for easy assembly and disassembly. The fixing seat 16 is of a circular ring structure, the second spring seat 17 is also of a circular ring structure, the second spring seat 17 is inserted into the fixing seat 16, an internal thread is arranged on the inner circular surface of the fixing seat 16, an external thread is arranged on the outer circular surface of the second spring seat 17, the ejector rod 13 penetrates through the central hole of the second spring seat 17, the second spring seat 17 plays a role in guiding the ejector rod 13, and the ejector rod 13 is guided to move along the axial direction in the process of opening and closing the pilot valve.

As shown in fig. 1, 4 and 10, there are two valve core assemblies, and correspondingly, two valve cavities are disposed inside the valve body 2, the two valve cavities are located on the same straight line parallel to the length direction of the valve body 2, the valve body 2 is in a rectangular block structure, and each valve cavity is respectively provided with one valve core assembly, one of the valve cavities is communicated with one working port, and the other valve cavity is communicated with the other working port. The number of the compression rods 19 is also two, each compression rod 19 is matched with one valve core assembly, and each compression rod 19 is contacted with the push rod of one valve core assembly. The pressing cap 15, the ejector rod 13, the pressing block 14, the pressing cap 15, the fixing seat 16, the second spring seat 17 and the second reset spring 18 of the gland component are all arranged in two numbers, two mounting holes are formed in the gland body 1, and the fixing seat 16 and the pressing cap 15 are respectively mounted in each mounting hole.

The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.

Claims

1. The manual pilot valve of button formula, including the valve body, set up in the inside case subassembly of valve body and the rotatable depression bar that sets up on the valve body, its characterized in that: the gland assembly is used for bearing the pressing force applied by the outside and converting the pressing force into the operating force for controlling the compression rod to rotate along the first direction; when the pressure lever rotates along the first direction, the valve core assembly can be switched from a closed state to an open state.

2. A push button manual pilot valve according to claim 1, wherein: the valve element assembly comprises a push rod, a first sealing ball, a second sealing ball, a guide rod, a threaded sleeve, a guide sleeve, a ball seat, a first spring seat and a first reset spring, wherein the push rod is in contact with the pressure rod and is used for receiving pressure applied by the pressure rod, the guide sleeve is sleeved on the push rod, the ball seat is arranged between the threaded sleeve and the guide sleeve and sleeved on the guide rod, the first spring seat is movably arranged inside the threaded sleeve, the first reset spring is arranged between the first spring seat and the threaded sleeve, the first sealing ball is arranged inside the first spring seat, the second sealing ball is arranged inside the guide sleeve, and the second sealing ball is clamped between the guide rod and the push rod.

3. A push button manual pilot valve according to claim 2, wherein: the valve core assembly further comprises a push rod sleeve sleeved on the push rod, and the guide sleeve is located between the ball seat and the push rod sleeve.

4. A push button manual pilot valve according to claim 2, wherein: the compression bar is rotatably connected with the valve body through a rotating shaft, and the axis of the rotating shaft is perpendicular to the axis of the push rod.

5. A push button manual pilot valve according to any one of claims 1 to 4, wherein: the gland subassembly includes the gland body, portable setting and with the ejector pin that the depression bar contacted, set up briquetting on the ejector pin and set up on the gland body and the press cap that contacts with the briquetting, press the press cap and be used for bearing the external pressing force that applys to promote briquetting and ejector pin removal, the ejector pin promotes the depression bar is followed the first direction and is rotated.

6. A push button manual pilot valve according to claim 5, wherein: the pressing cap is made of rubber.

7. A push button manual pilot valve according to claim 5, wherein: the axis of the ejector rod is parallel to the axis of the valve core assembly, the pressing block is fixedly connected with one end of the ejector rod, and the pressing block is located between the ejector rod and the pressing cap.

8. A push button manual pilot valve according to claim 5, wherein: the gland component further comprises a fixed seat connected with the gland body, a second spring seat connected with the fixed seat and sleeved on the ejector rod, and a second reset spring sleeved on the ejector rod and positioned between the second spring seat and the pressing block.

9. A push button manual pilot valve according to claim 8, wherein: the second spring seat is in threaded connection with the fixed seat.

10. A push button manual pilot valve according to claim 5, wherein: the valve body is provided with a containing cavity for containing the pressure rod, the gland component covers the containing cavity, and the gland body is connected with the valve body.