CN220354548U

CN220354548U - Combined reversing valve with sealing structure

Info

Publication number: CN220354548U
Application number: CN202321595470.8U
Authority: CN
Inventors: 刘静
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-21
Filing date: 2023-06-21
Publication date: 2024-01-16
Anticipated expiration: 2033-06-21

Abstract

The utility model relates to the technical field of valves, and particularly discloses a reversing valve with a combined sealing structure, which comprises: the valve body comprises a hollow ball with openings at the upper end and the lower end, a connecting flange uniformly fixed on the outer side surface of the hollow ball, a top plate fixed on the upper end of the hollow ball and a base fixed on the lower end of the hollow ball, and a circulation hole communicated with the connecting flange is formed in the side surface of the hollow ball; according to the utility model, the valve body, the valve core, the valve rod and the reversing control rod are arranged, the medium in the reversing valve can flow to different valves only by rotating the reversing control rod, the reversing valve is not limited to reversing between two directions, the application range of the reversing valve is wider and more convenient, the ejector rod in the valve is arranged to push the plug to move towards the inside of the transverse channel, so that the medium can flow out of the transverse channel, and after a certain valve is disassembled or the ejector rod is retracted, the direction of the valve cannot be used for allowing the medium to pass, so that the reversing quantity of the reversing valve can be freely controlled.

Description

Combined reversing valve with sealing structure

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to a reversing valve with a combined sealing structure.

Background

The reversing valve is a directional control valve with more than two flow forms and more than two oil ports, and is a valve for realizing communication, cutting-off and reversing of hydraulic oil flow, pressure unloading and sequential action control.

In the Chinese patent with publication number of CN211525613U, a combined high-temperature reversing valve is disclosed, and the on-off conditions of a second fluid pipeline, a third fluid pipeline and a first fluid pipeline can be respectively controlled by respectively controlling the movement of a first valve shaft and a second valve shaft; the multi-layer sealing structure is designed, is suitable for long-term work in various high-temperature environments, and has the advantages of quick opening and closing, high reliability, small volume, simple maintenance and simple pipeline arrangement.

The combined reversing valve has a multi-layer sealing structure, the leakage probability can be reduced, the maintenance interval of the reversing valve is prolonged, however, the reversing valve can only be switched in two directions and can not realize the change of more directions, so that the use of the reversing valve is limited to a certain extent, and when the reversing valve is switched in more directions in a pipeline, a plurality of reversing valves are needed to be matched for use.

Disclosure of Invention

The utility model aims to provide a reversing valve with a combined sealing structure, which solves the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a modular seal structure reversing valve comprising:

the valve body comprises a hollow ball with openings at the upper end and the lower end, a connecting flange uniformly fixed on the outer side surface of the hollow ball, a top plate fixed on the upper end of the hollow ball and a base fixed on the lower end of the hollow ball, and a circulation hole communicated with the connecting flange is formed in the side surface of the hollow ball;

a fluid input pipe fixedly installed inside the top plate;

the valve core is a sphere tightly attached to the inner side wall of the hollow sphere, the top of the valve core is provided with a mounting hole, the mounting hole is rotationally connected with the fluid input pipe, the lower end of the mounting hole is provided with a longitudinal channel, and the lower end of the longitudinal channel is provided with a transverse channel communicated with the longitudinal channel;

the first sealing ring is arranged on the inner wall of the mounting hole and is in close contact with the fluid input pipe;

the valve is arranged on the connecting flange;

a valve stem slidably mounted within the transverse channel;

the circulating port is arranged on the valve;

the reversing control rod is rotationally connected with the base, and the upper end of the reversing control rod is fixedly arranged at the bottom of the valve core.

Preferably, the valve comprises a shell connected with the connecting flange through a bolt, a partition plate is fixedly arranged in the middle of the shell, a T-shaped block which is in sliding connection with the partition plate is sleeved on the partition plate in a sliding manner, a push rod is fixedly arranged at one end of the T-shaped block, which faces the flow hole, the push rod is sleeved in the flow hole, an end cap is fixedly arranged at one end, far away from the flow hole, of the shell through the bolt, a hand screw is connected to the end cap in a threaded manner, a push block is fixedly arranged at one end of the hand screw, the push block abuts against the T-shaped block, and the flow hole is formed in one side, close to the connecting flange, of the shell.

Preferably, a reset spring is fixedly arranged between the T-shaped block and the inner wall of one side of the shell.

Preferably, a through hole is formed in the middle of the partition plate, a second sealing ring is fixedly installed in the through hole, and the second sealing ring is in tight contact with the outer side wall of the T-shaped block.

Preferably, the valve rod comprises a straight rod sleeved in the transverse channel, a frustum-shaped stop block is fixedly arranged at one end of the straight rod, a clamping groove matched and sleeved with the frustum-shaped stop block is formed in the position, close to the opening, of the transverse channel, a plug is fixedly arranged at one end of the frustum-shaped stop block, the plug penetrates through the clamping groove and extends to the outside of the valve core, an annular groove is formed in the hollow ball, and the plug is in tight contact with the annular groove.

Preferably, a baffle is fixedly arranged at the other end of the straight rod, and a telescopic spring is fixedly connected between the baffle and the hole bottom of the transverse channel.

Preferably, a third sealing ring is arranged on one side, close to the hole bottom, of the transverse channel, and the third sealing ring is in tight contact with the straight rod.

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the utility model, the valve body, the valve core, the valve rod and the reversing control rod are arranged, so that the medium in the reversing valve can flow to different valves only by rotating the reversing control rod, the reversing valve is not limited to reversing between two directions, and the application range of the reversing valve is wider and more convenient.

(2) According to the utility model, the ejector rod in the valve is arranged to push the plug to move towards the inside of the transverse channel, so that a medium can flow out of the transverse channel, and after a certain valve is disassembled or the ejector rod is retracted, the direction of the valve cannot pass through the medium, so that the reversing quantity of the reversing valve can be freely controlled, and the free combination is facilitated.

(3) Through setting up sealing washer one and sealing washer two, can reduce the probability that the during operation medium oozes from the switching-over valve, through setting up frustum formula dog and draw-in groove, can strengthen sealed effect when the end cap does not contact with the ejector pin, guarantee the sealed effect of switching-over valve.

Drawings

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

FIG. 2 is a front structural cross-sectional view of the present utility model;

fig. 3 is a perspective view of the present utility model.

In the figure:

1. a valve body; 11. a hollow sphere; 12. a connecting flange; 13. a top plate; 14. a base; 15. a flow hole; 16. an annular groove;

2. a valve core; 21. a mounting hole; 22. a longitudinal channel; 23. a transverse channel; 24. a clamping groove; 25. a first sealing ring; 26. a third sealing ring;

3. a valve; 31. a housing; 32. a partition plate; 33. a T-shaped block; 34. a push rod; 35. a return spring; 36. an end cap; 37. screwing the screw rod by hand; 38. a pushing block; 39. a second sealing ring;

4. a fluid input tube;

5. a valve stem; 51. a straight rod; 52. a frustum-shaped stop block; 53. a plug; 54. a baffle; 55. a telescopic spring;

6. a flow port;

7. a reversing control lever.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one:

referring to fig. 1-3, a reversing valve with a combined sealing structure includes:

the valve body 1, the valve body 1 comprises a hollow ball 11 with openings at the upper end and the lower end, a connecting flange 12 uniformly fixed on the outer side surface of the hollow ball 11, a top plate 13 fixed on the upper end of the hollow ball 11 and a base 14 fixed on the lower end of the hollow ball 11, and a circulation hole 15 communicated with the connecting flange 12 is formed on the side surface of the hollow ball 11;

a fluid input pipe 4, the fluid input pipe 4 being fixedly installed inside the top plate 13;

the valve core 2 is a sphere tightly attached to the inner side wall of the hollow sphere 11, the top of the valve core 2 is provided with a mounting hole 21, the mounting hole 21 is rotationally connected with the fluid input pipe 4, the lower end of the mounting hole 21 is provided with a longitudinal channel 22, and the lower end of the longitudinal channel 22 is provided with a transverse channel 23 communicated with the longitudinal channel;

the first sealing ring 25 is arranged on the inner wall of the mounting hole 21 and is in close contact with the fluid input pipe 4;

a valve 3, the valve 3 being mounted on the connecting flange 12;

a valve stem 5, the valve stem 5 being slidably mounted inside the transverse channel 23;

a flow port 6, the flow port 6 being provided on the valve 3;

the reversing control rod 7, the reversing control rod 7 is rotationally connected with the base 14, and the upper end of the reversing control rod 7 is fixedly arranged at the bottom of the valve core 2.

It can be seen from the above that by arranging the valve body 1, the valve core 2, the valve 3, the valve rod 5 and the reversing control rod 7, the medium in the reversing valve can flow towards different valve 3 directions only by rotating the reversing control rod 7, and the reversing valve is not limited to reversing between the two directions, so that the use range of the reversing valve is wider and more convenient, and the first sealing ring 25 can prevent the medium from seeping out from the space between the fluid input pipe 4 and the mounting hole 21.

Specifically, as can be seen from fig. 2 and 3, the valve 3 includes a casing 31 connected with the connecting flange 12 through bolts, a partition plate 32 is fixedly installed in the middle of the casing 31, a T-shaped block 33 slidably connected with the partition plate 32 is slidably sleeved on the partition plate 32, a push rod 34 is fixedly installed at one end of the T-shaped block 33, which faces the flow hole 15, the push rod 34 is sleeved in the flow hole 15, an end cap 36 is fixedly installed at one end of the casing 31, which is far away from the flow hole 15, through bolts, a hand screw 37 is connected to the end cap 36 in a threaded manner, a push block 38 is fixedly installed at one end of the hand screw 37, the push block 38 abuts against the T-shaped block 33, and the flow port 6 is formed at one side, close to the connecting flange 12, of the casing 31.

From the above, turning the hand screw 37 can make the push block 38 push the T-shaped block 33 close to the connection flange 12, so that the ejector rod 34 passes through the connection flange 12 and enters the inside of the annular groove 16, when the valve core 2 rotates so that the opening end of the transverse channel 23 faces the ejector rod 34, the ejector rod 34 can eject the valve rod 5 to the inside of the valve core 2, and the medium flows out.

Specifically, as can be seen from fig. 2, a return spring 35 is fixedly installed between the T-block 33 and one side inner wall of the housing 31.

From the above, the return spring 35 can push the T-shaped block 33 so that the T-shaped block 33 is abutted against the partition plate 32, and the ejector rod 34 does not extend into the annular groove 16, that is, as long as the T-shaped block 33 is not pushed by the hand screw 37, the ejector rod 34 does not push the valve rod 5 to retract into the valve core 2.

Specifically, as can be seen from fig. 2, a through hole is formed in the middle of the partition plate 32, and a second sealing ring 39 is fixedly installed in the through hole, and the second sealing ring 39 is in close contact with the outer side wall of the T-shaped block 33.

As described above, by providing the second seal ring 39, the medium can be prevented from flowing out from the gap between the screw hole in the end cap 36 and the hand screw 37.

Embodiment two:

referring to fig. 3, the valve rod 5 includes a straight rod 51 sleeved in the transverse channel 23, a frustum-shaped stop 52 is fixedly mounted at one end of the straight rod 51, a clamping groove 24 matched and sleeved with the frustum-shaped stop 52 is formed in a position, close to the opening, of the transverse channel 23, a plug 53 is fixedly mounted at one end of the frustum-shaped stop 52, the plug 53 penetrates through the clamping groove 24 to extend to the outside of the valve core 2, an annular groove 16 is formed in the hollow ball 11, and the plug 53 is in close contact with the annular groove 16.

As is clear from the above, when the truncated cone-shaped stopper 52 is attached to the left side of the locking groove 24, the lateral passage 23 is sealed and blocked, and the medium cannot flow out, and at this time, the plug 53 protrudes to the outside of the valve element 2, and when the truncated cone-shaped stopper 52 slides to the right by a certain distance, the lateral passage 23 is opened, and the medium flows out, and at this time, the plug 53 returns to the inside of the valve element 2.

Specifically, as can be seen from fig. 3, a baffle 54 is fixedly mounted at the other end of the straight rod 51, and a telescopic spring 55 is fixedly connected between the baffle 54 and the bottom of the transverse channel 23.

As described above, the stopper 54 and the extension spring 55 are provided, and the push plug 53 can be always extended to the outside of the valve body 2 without being subjected to external force.

Preferably, as can be seen from fig. 3, a third sealing ring 26 is arranged on one side of the transverse channel 23 close to the hole bottom, and the third sealing ring 26 is in close contact with the straight rod 51.

From the above, the third sealing ring 26 can guide the straight rod 51, and avoid the extension spring 55 from being soaked by the medium.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A combination seal structured reversing valve, comprising:

the valve body (1) comprises a hollow ball (11) with openings at the upper end and the lower end, a connecting flange (12) uniformly fixed on the outer side surface of the hollow ball (11), a top plate (13) fixed on the upper end of the hollow ball (11) and a base (14) fixed on the lower end of the hollow ball (11), wherein a circulating hole (15) communicated with the connecting flange (12) is formed in the side surface of the hollow ball (11);

a fluid input pipe (4), wherein the fluid input pipe (4) is fixedly arranged inside the top plate (13);

the valve core (2), the valve core (2) is a sphere tightly attached to the inner side wall of the hollow sphere (11), the top of the valve core is provided with a mounting hole (21), the mounting hole (21) is rotationally connected with the fluid input pipe (4), the lower end of the mounting hole (21) is provided with a longitudinal channel (22), and the lower end of the longitudinal channel (22) is provided with a transverse channel (23) communicated with the longitudinal channel;

the first sealing ring (25) is arranged on the inner wall of the mounting hole (21) and is in close contact with the fluid input pipe (4);

a valve (3), the valve (3) being mounted on a connecting flange (12);

-a valve stem (5), said valve stem (5) being slidably mounted inside the transverse channel (23);

a flow port (6), wherein the flow port (6) is arranged on the valve (3);

the reversing control rod (7), the reversing control rod (7) is rotationally connected with the base (14), and the upper end of the reversing control rod is fixedly arranged at the bottom of the valve core (2).

2. The combination seal reversing valve of claim 1, wherein: the valve (3) comprises a shell (31) connected with a connecting flange (12) through bolts, a partition plate (32) is fixedly arranged in the middle of the shell (31), a T-shaped block (33) which is in sliding connection with the partition plate (32) is sleeved on the partition plate (32), a push rod (34) is fixedly arranged at one end of the T-shaped block (33) towards a flow hole (15), the push rod (34) is sleeved inside the flow hole (15), an end cap (36) is fixedly arranged at one end, far away from the flow hole (15), of the shell (31) through bolts, a hand screw (37) is connected to the end cap (36) in a threaded manner, a push block (38) is fixedly arranged at one end of the hand screw (37), the push block (38) is abutted against the T-shaped block (33), and the flow hole (6) is formed in one side, close to the connecting flange (12), of the shell (31).

3. A combined seal structure reversing valve according to claim 2, wherein: a return spring (35) is fixedly arranged between the T-shaped block (33) and one side inner wall of the shell (31).

4. A combined seal structure reversing valve according to claim 2, wherein: the middle part of division board (32) has seted up the through-hole, and the through-hole internal fixation has sealing washer two (39), sealing washer two (39) and the lateral wall in close contact of T type piece (33).

5. The combination seal reversing valve of claim 1, wherein: the valve rod (5) is including the cover establish at the inside straight-bar (51) of transverse channel (23), the one end fixed mounting of straight-bar (51) has frustum type dog (52), draw-in groove (24) that cooperate to cup joint with frustum type dog (52) are seted up to transverse channel (23) near open-ended position, the one end fixed mounting of frustum type dog (52) has end cap (53), end cap (53) pass draw-in groove (24) and extend to the outside of case (2), ring channel (16) have been seted up to the inside of hollow sphere (11), end cap (53) and ring channel (16) in close contact.

6. The combination seal reversing valve of claim 5, wherein: a baffle plate (54) is fixedly arranged at the other end of the straight rod (51), and a telescopic spring (55) is fixedly connected between the baffle plate (54) and the hole bottom of the transverse channel (23).

7. The combination seal reversing valve of claim 1, wherein: and a sealing ring III (26) is arranged on one side of the transverse channel (23) close to the bottom of the hole, and the sealing ring III (26) is tightly contacted with the straight rod (51).