CN220980348U

CN220980348U - Sealing structure of selector valve

Info

Publication number: CN220980348U
Application number: CN202322696042.0U
Authority: CN
Inventors: 何倩云; 张彦哲; 马晓妍
Original assignee: Nanjing Nanxiao Tuna Gas System Fire Technology Co ltd
Current assignee: Nanjing Nanxiao Tuna Gas System Fire Technology Co ltd
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2024-05-17
Anticipated expiration: 2033-10-08

Abstract

The application discloses a sealing structure of a selection valve, and relates to the technical field of sealing valves. The application comprises a valve body and a valve core, wherein a locking plate is rotatably arranged on the valve body, the top end of the valve core is propped against the locking plate, and the application further comprises: the air inlet pipe is communicated with the bottom of the valve body, a piston positioned in the air inlet pipe is arranged at the bottom of the valve core, and the outer peripheral side of the piston is attached to the outer peripheral side of the air inlet pipe; the pressing cylinder is vertically sleeved in the air inlet pipe in a sliding mode, two ends of the pressing cylinder are both provided with openings, and the valve body is provided with a driving assembly for driving the pressing cylinder to move. When the locking plate is loosened, the pressing cylinder can be moved upwards through the driving assembly, so that the sealing effect is ensured by matching with the sealing ring, and when the selection valve is closed, the situation that the piston moves upwards to generate air leakage due to the loosening of the locking plate is not easy to happen due to fire fighting air pressure, so that the hydraulic valve is more practical.

Description

Sealing structure of selector valve

Technical Field

The application relates to the technical field of sealing valves, in particular to a sealing structure of a selection valve.

Background

The selector valve piston is a mechanism mounted inside the selector valve for opening, closing and regulating the medium. The working principle is that the flow and pressure of the medium are changed by changing the position of the piston, and the flow direction and working condition of the medium are controlled.

When the selection valve is in an open state, the piston is in an open position, medium enters from the selection valve and flows out through the reduced gap of the piston, at the moment, the lower part of the piston rises, so that the caliber of the valve is increased, the medium flow is increased, and the medium flow is controlled. Conversely, when the selector valve is in the closed state, the piston is in the closed position and the medium cannot pass through the selector valve to stop flowing. The selector valve piston moves up and down to change the flow and pressure of the medium and control the flow direction of the medium.

When the prior selector valve is in a closed state, the bottom of the piston is attached to the inner port of the air inlet end of the selector valve, the locking plate on the selector valve is abutted against the top of the piston rod, so that the piston is prevented from being propped open by the air pressure of the fire extinguisher, but the locking plate on the prior selector valve is generally in rotary or sliding installation, such as the locking plate which is installed on the selector valve in a rotary mode, and is generally limited by the limiting plate which is horizontally sliding, when the selector valve is closed, the bottom surface of the limiting plate is contacted with the top surface of the locking plate, so that the limiting plate plays a role of limiting the locking plate, when the selector valve needs to be opened, the limiting plate horizontally slides in a pneumatic mode and does not abut against the locking plate, and the limiting of the locking plate is relieved, at the moment, the piston can move upwards due to the action of the internal pressure, after a certain time of use, the locking plate can be loosened, so that the piston block moves upwards to a certain extent due to the air pressure of the fire extinguisher, and the selector valve is easy to leak when the selector valve is not used.

Disclosure of utility model

The application aims at: in order to solve the problems set forth in the background above, the present application provides a selector valve sealing structure.

The application adopts the following technical scheme for realizing the purposes:

The utility model provides a selector valve seal structure, includes valve body and case, install the locking plate on the valve body rotation, the top of case is supported and is leaned on the locking plate still includes:

The air inlet pipe is communicated with the bottom of the valve body, a piston positioned in the air inlet pipe is arranged at the bottom of the valve core, and the outer peripheral side of the piston is attached to the outer peripheral side of the air inlet pipe;

The pressing cylinder is vertically sleeved in the air inlet pipe in a sliding mode, two ends of the pressing cylinder are both provided with openings, a driving assembly for driving the pressing cylinder to move is arranged on the valve body so as to form the effect that one end of the pressing cylinder is abutted against the bottom of the piston, and an annular sealing ring is arranged at the end, which is contacted with the piston, of the pressing cylinder;

the connecting pipe is arranged on the valve body through a connecting rod, and one end of the connecting pipe is inserted into the pressing cylinder.

Further, the driving assembly comprises a sleeve arranged on the valve body, a driving rod is arranged at one end of the sleeve, the free end of the driving rod is connected with the outer circumferential side of the pressure cylinder, a pressure pipe is communicated between the pressure cylinder and the connecting pipe, and an exhaust pipe is communicated with the outer circumferential side of the sleeve.

Further, a connecting valve is arranged on the pressure pipe, a valve plate is rotatably arranged on the connecting valve, and a rod body with one end positioned outside is constructed outside the valve plate.

Further, the free end of the exhaust pipe is a seal, a vent groove is formed in the outer peripheral side of the exhaust pipe, a sealing sleeve for shielding the exhaust pipe is arranged on the side sliding sleeve at the outer periphery of the exhaust pipe, and a transmission assembly for driving the sealing sleeve to move is arranged on the rod body.

Further, the transmission assembly comprises a connecting disc coaxially arranged on the rod body, a post rod is eccentrically arranged on the connecting disc, a sliding frame is vertically and slidably arranged on the pressure pipe, the post rod is in sliding tangency with the sliding frame, and a linkage rod is hinged between the sliding frame and the sealing sleeve.

Further, two limiting baffle rings are arranged on the outer peripheral side of the exhaust pipe, and the sealing sleeve is positioned between the two limiting baffle rings.

Further, a T-shaped connecting ring plate is formed at the top end of the pressing cylinder, and a ring groove sleeved on the outer circumferential side of the connecting ring plate is formed on the inner circumferential side of the sealing ring in a ring shape.

Further, an annular mounting groove is formed in the inner peripheral side of the pressing cylinder, and a sealing rubber sleeve is mounted in the mounting groove.

The beneficial effects of the application are as follows:

When the locking plate is loosened, the pressing cylinder can be moved upwards through the driving assembly, so that the sealing effect is ensured by matching with the sealing ring, and when the selection valve is closed, the situation that the piston moves upwards to generate air leakage due to the loosening of the locking plate is not easy to happen due to fire fighting air pressure, so that the hydraulic valve is more practical.

Drawings

FIG. 1 is a schematic perspective view of the present application;

FIG. 2 is a schematic perspective view of the structure of FIG. 1 according to the present application;

FIG. 3 is a partial perspective cross-sectional view of FIG. 1 in accordance with the present application;

FIG. 4 is a partial perspective cross-sectional view of FIG. 2 in accordance with the present application;

FIG. 5 is an enlarged view of the structure of FIG. 3A in accordance with the present application;

FIG. 6 is an enlarged view of the structure of FIG. 2B in accordance with the present application;

FIG. 7 is an enlarged view of the structure of FIG. 4 at C in accordance with the present application;

reference numerals: 1. a valve body; 2. a valve core; 3. a locking plate; 4. an air inlet pipe; 5. a piston; 6. a drive assembly; 601. a sleeve; 602. a driving rod; 603. a pressure pipe; 604. an exhaust pipe; 605. a vent groove; 606. sealing sleeve; 7. a seal ring; 8. a connecting pipe; 9. a connecting rod; 10. a valve plate; 11. a rod body; 12. a transmission assembly; 1201. a connecting disc; 1202. a post; 1203. a sliding frame; 1204. a linkage rod; 13. a limit baffle ring; 14. connecting the annular plates; 15. a ring groove; 16. a mounting groove; 17. sealing the rubber sleeve; 18. a pressure cylinder; 19. and a connecting valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

As shown in fig. 1 to 7, a sealing structure of a selector valve according to an embodiment of the present application includes a valve body 1 and a valve core 2, a locking plate 3 is rotatably installed on the valve body 1, and a top end of the valve core 2 abuts against the locking plate 3, and further includes:

The air inlet pipe 4 is communicated with the bottom of the valve body 1, a piston 5 positioned in the air inlet pipe 4 is arranged at the bottom of the valve core 2, and the outer peripheral side of the piston 5 is attached to the outer peripheral side of the air inlet pipe 4;

The pressure cylinder 18 is vertically sleeved in the air inlet pipe 4 in a sliding manner, two ends of the pressure cylinder 18 are both openings, the valve body 1 is provided with a driving component 6 for driving the pressure cylinder 18 to move so as to form a state that one end of the pressure cylinder 18 is abutted against the bottom of the piston 5, and one end of the pressure cylinder 18, which is contacted with the piston 5, is provided with an annular sealing ring 7;

The connecting pipe 8 is installed on the valve body 1 through the connecting rod 9, one end is inserted in the pressure cylinder 18, when the piston 5 is in a closed state, the pressure cylinder 18 is enabled to move upwards through the driving component 6 at the moment, so that the top end of the pressure cylinder 18 is abutted against the bottom of the piston 5, the top end of the pressure cylinder 18 is enabled to abut against the bottom of the piston 5 because the sealing ring 7 is installed on the top end of the pressure cylinder 18, the sealing ring 7 is enabled to cover the edge of the bottom of the piston 5, at the moment, the piston 5 has an upward movement trend because the driving force provided by the driving component 6, when the locking plate 3 loosens, the piston 5 is enabled to abut against the locking plate 3 because the piston 5 has an upward movement trend, and the sealing ring 7 at the moment always abuts against the bottom of the piston 5, so that the sealing performance is guaranteed, when the locking plate 3 loosens, the sealing effect is guaranteed through the driving component 6, the sealing ring 7 is matched, the fire fighting air pressure is not easy to move out of the piston 5 because of the locking plate 3 is enabled under the condition of closing, and therefore the fire fighting air leakage is more practical.

As shown in fig. 1, 3, 6 and 7, in some embodiments, the driving assembly 6 includes a sleeve 601 installed on the valve body 1, a driving rod 602 is installed at one end of the sleeve 601, a free end of the driving rod 602 is connected to an outer circumferential side of the pressure cylinder 18, a pressure pipe 603 is connected between the pressure cylinder 18 and the connecting pipe 8, an exhaust pipe 604 is connected to an outer circumferential side of the sleeve 601, the exhaust pipe 604 plays a role in pressure relief, when the driving rod 602 is jacked up by fire-fighting air pressure, air above the driving rod 602 at this time, the fire-fighting air will flow out of the exhaust pipe 604, and the fire-fighting air will always remain in an open state, so that part of fire-fighting air will enter the sleeve 601 through the pressure pipe 603, so that the driving rod 602 is jacked up by air pressure, because the driving rod 602 is connected to the outer circumferential side of the pressure cylinder 18, the driving rod 602 will move upward, so that the pressure cylinder 18 will always collide against the bottom edge of the piston 5 when the valve is in a closed state.

As shown in fig. 1, 3, 6 and 7, in some embodiments, the pressure tube 603 is provided with a connecting valve 19, the connecting valve 19 is rotatably provided with a valve plate 10, a rod body 11 with one end located outside is configured outside the valve plate 10, when the selection valve is in a closed state, the rod body 11 is rotated to enable the valve plate 10 to be in an open state, thereby providing upward forcing force for the pressure cylinder 18, and when the selection valve needs to be opened, the rod body 11 can be rotated to enable the valve plate 10 to be in a closed state, thereby preventing gas from entering the pressure tube 603 to enable the pressure cylinder 18 to move, and preventing the piston 5 from always abutting against the sealing ring 7 when the selection valve is opened, so that air flow is not circulated.

As shown in fig. 1, 3, 6 and 7, in some embodiments, the free end of the exhaust pipe 604 is a seal, the outer peripheral side of the exhaust pipe 604 is provided with a vent groove 605, the outer peripheral side sliding sleeve of the exhaust pipe 604 is provided with a sealing sleeve 606 for shielding the exhaust pipe 604, the rod body 11 is provided with a transmission assembly 12 for driving the sealing sleeve 606 to move, when the selection valve is in a closed state, the vent groove 605 is in an open state at this time, so that fire fighting gas enters the pressure pipe 603, and after the fire fighting gas enters the pressure pipe 603, the driving rod 602 moves to squeeze residual gas in the sleeve 601 into the vent groove 605, so that the normal movement of the driving rod 602 is ensured, and when the selection valve needs to be opened, the sealing sleeve 606 shields the vent groove 605 through the transmission assembly 12, and then the valve plate 10 is closed, so that the inside of the sleeve 601 is in a closed state, the driving rod 602 is not easy to move by itself due to air pressure, and the limit of the pressure cylinder 18 is achieved.

As shown in fig. 3, 6 and 7, in some embodiments, the transmission assembly 12 includes a connection disc 1201 coaxially mounted on the rod 11, a post 1202 is eccentrically configured on the connection disc 1201, a sliding frame 1203 is vertically slidably mounted on the pressure tube 603, the post 1202 is slidably tangent in the sliding frame 1203, and a linkage rod 1204 is hinged between the sliding frame 1203 and the sealing sleeve 606, that is, when the rod 11 is rotated to make the valve plate 10 be in a closed state, at this moment, the rotation of the rod 11 rotates the connection disc 1201, the connection disc 1201 rotates to drive the post 1202 to move, because the sliding frame 1203 is slidably tangent to the post 1202, the connection disc 1201 rotates relative to the sliding frame 1203, the post 1202 moves in the sliding frame 1203 and rotates along the axis thereof, thereby forcing the sliding frame 1203 to move, and because a linkage rod 1204 is hinged between the sliding frame 1203 and the sealing sleeve 606, the sealing sleeve 606 moves along with the movement of the linkage rod 1204, thereby the sealing sleeve 606 is not required to rotate the valve plate 10, and the sealing sleeve 606 is not required to be additionally controlled to move, and the sealing sleeve 606 is more convenient in use.

As shown in fig. 1, 6 and 7, in some embodiments, two limiting stop rings 13 are configured on the outer peripheral side of the exhaust pipe 604, the sealing sleeve 606 is located between the two limiting stop rings 13, the limiting stop rings 13 are designed to play a limiting role, when the sealing sleeve 606 contacts one of the limiting stop rings 13, the valve plate 10 is illustrated to be in a closed state, and when the sealing sleeve 606 contacts the other limiting stop ring 13, the valve plate 10 is in an open state, so that the state of the valve plate 10 at the moment can be clearly known, and preferably, the colors of the stop rings can be different, so that the distinction is convenient.

As shown in fig. 3 and 5, in some embodiments, the top end of the pressing cylinder 18 is configured with a T-shaped connection ring plate 14, an annular groove 15 sleeved on the outer peripheral side of the connection ring plate 14 is annularly provided on the inner peripheral side of the sealing ring 7, and the sealing ring 7 is sleeved on the connection ring plate 14 through the annular groove 15, so that the sealing ring 7 is not only limited, the sealing ring 7 is not easy to fall off, but also the rubber part of the sealing ring 7 is fully contacted with the piston 5, so that the sealing effect is improved.

As shown in fig. 3 and 5, in some embodiments, an annular mounting groove 16 is formed on the inner peripheral side of the pressure cylinder 18, and a sealing rubber sleeve 17 is installed in the mounting groove 16, and the design of the sealing rubber sleeve 17 serves to improve the tightness between the pressure cylinder 18 and the connecting pipe 8 and prevent the air leakage phenomenon of the joint surface of the pressure cylinder 18 and the connecting pipe 8.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a selector valve seal structure, includes valve body (1) and case (2), install locking plate (3) on valve body (1) rotation, the top of case (2) is supported and is leaned on locking plate (3), its characterized in that still includes:

The air inlet pipe (4) is communicated with the bottom of the valve body (1), a piston (5) positioned in the air inlet pipe (4) is arranged at the bottom of the valve core (2), and the outer peripheral side of the piston (5) is attached to the outer peripheral side of the air inlet pipe (4);

The pressing cylinder (18) is vertically sleeved in the air inlet pipe (4) in a sliding mode, two ends of the pressing cylinder (18) are both openings, a driving assembly (6) for driving the pressing cylinder (18) to move is arranged on the valve body (1) so as to form the effect that one end of the pressing cylinder (18) is abutted against the bottom of the piston (5), and an annular sealing ring (7) is arranged at one end, in contact with the piston (5), of the pressing cylinder (18);

The connecting pipe (8) is arranged on the valve body (1) through the connecting rod (9) and one end of the connecting pipe is inserted into the pressing cylinder (18).

2. A selector valve sealing arrangement according to claim 1, characterized in that the drive assembly (6) comprises a sleeve (601) mounted on the valve body (1), a drive rod (602) is mounted at one end of the sleeve (601), the free end of the drive rod (602) is connected to the outer peripheral side of the pressure cylinder (18), a pressure tube (603) is connected between the pressure cylinder (18) and the connecting tube (8), and an exhaust tube (604) is connected to the outer peripheral side of the sleeve (601).

3. A selector valve seal as claimed in claim 2, wherein a connecting valve (19) is mounted on said pressure tube (603), a valve plate (10) is rotatably mounted on said connecting valve (19), and a rod body (11) having one end located outside is constructed outside said valve plate (10).

4. A selector valve seal according to claim 3, wherein the free end of the exhaust pipe (604) is a seal, a vent groove (605) is formed in the outer peripheral side of the exhaust pipe (604), a sealing sleeve (606) for shielding the exhaust pipe (604) is arranged on the side sliding sleeve on the outer periphery of the exhaust pipe (604), and a transmission assembly (12) for driving the sealing sleeve (606) to move is mounted on the rod body (11).

5. A selector valve seal as claimed in claim 4, wherein said transmission assembly (12) comprises a connecting disc (1201) coaxially mounted on said rod body (11), a post (1202) is eccentrically configured on said connecting disc (1201), a sliding frame (1203) is vertically slidably mounted on said pressure tube (603), said post (1202) is slidably tangent to said sliding frame (1203), and a linkage rod (1204) is hinged between said sliding frame (1203) and said sealing sleeve (606).

6. A selector valve seal as set forth in claim 5, wherein said exhaust pipe (604) is structured with two limit stop rings (13) on its outer peripheral side, said seal cartridge (606) being located between said two limit stop rings (13).

7. The selector valve sealing structure according to claim 1, wherein the top end of the pressure cylinder (18) is provided with a T-shaped connecting ring plate (14), and the inner peripheral side of the seal ring (7) is provided with a ring groove (15) which is sleeved on the outer peripheral side of the connecting ring plate (14).

8. The selector valve sealing structure according to claim 1, wherein an annular mounting groove (16) is formed in the inner peripheral side of the pressure cylinder (18), and a sealing rubber sleeve (17) is mounted in the mounting groove (16).