CN218913752U

CN218913752U - Leakage-proof stop valve

Info

Publication number: CN218913752U
Application number: CN202223320817.6U
Authority: CN
Inventors: 高杰; 刘三玲; 吴翔; 吴孔力; 方飞晓; 付达强
Original assignee: Hangzhou xihu valve factory
Current assignee: Hangzhou xihu valve factory
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-04-25
Anticipated expiration: 2032-12-08

Abstract

The utility model relates to the technical field of stop valves and discloses a leakage-proof stop valve, which comprises a valve body, wherein a valve clack is movably connected in the valve body, a valve rod is fixedly connected to the top end of the valve clack, a sealing element is fixedly connected to the outer wall of the valve rod, a connecting rod is fixedly connected to the top end of the valve rod, a rotating handle is fixedly connected to the top end of the connecting rod, a clamping groove is formed in the top end of the valve body, a clamping block is movably connected in the clamping groove, a first sealing ring is fixedly connected to the top end of the clamping block, a sealing gasket is fixedly connected to the inner wall of the first sealing ring, and a connecting element is fixedly connected to the top end of the first sealing ring. This stop valve that prevents leaking can make this stop valve have good sealed effect, is convenient for improve the leakproofness between valve rod and the valve body, improves the leakproofness that stop valve and pipeline are connected simultaneously, effectively improves the effect that stop valve prevents leaking in the use to the practicality of this stop valve has obtained certain promotion.

Description

Leakage-proof stop valve

Technical Field

The utility model relates to the technical field of stop valves, in particular to a leakage-proof stop valve.

Background

The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so that when the valve is closed, pressure must be applied to the valve clack so as to force the sealing surface not to leak. When a medium enters the valve from the lower part of the valve clack, the resistance which needs to be overcome by the operation force is the friction force of the valve rod and the filler and the thrust generated by the pressure of the medium, and the force for closing the valve is larger than the force for opening the valve, so that the diameter of the valve rod is larger, otherwise, the valve rod is in a bending fault. The connection mode is divided into three types: flange connection, screw thread connection and welding connection. After the self-sealing valve appears, the medium flow direction of the stop valve is changed from the upper part of the valve clack to the valve cavity, at this time, under the action of medium pressure, the force for closing the valve is small, the force for opening the valve is large, and the diameter of the valve rod can be correspondingly reduced. At the same time, under the action of the medium, the valve in the form is also tighter. The valve 'three types' in China stipulates that the flow direction of the stop valve is uniformly from top to bottom. When the stop valve is opened, the opening height of the valve clack is 25-30% of the nominal diameter, and the flow rate is maximum, which means that the valve has reached the full-open position. The fully open position of the shut-off valve is determined by the stroke of the valve flap.

In Chinese patent, a leak-proof stop valve such as CN217328492U comprises a valve body, wherein a valve seat is arranged in the valve body; a valve cover hermetically connected to the valve body; the screw rod is rotatably arranged in the valve cover; the connecting sleeve assembly is connected to the screw rod; the sealing device is connected between the valve body and the valve seat, and can enable the connecting sleeve assembly to seal the inner parts of the valve body and the valve seat, so that the whole valve has good sealing performance.

The following problems exist in the prior art:

1. the sealing structure is not arranged at the joint of the pipelines of the stop valve, so that the sealing performance of the stop valve in the use process is reduced;

2. the prior art is used for preventing the stop valve of leakage, is not provided with a locking mechanism to the stop valve, and is easy to cause the state change of the stop valve in a closed state due to the external false touch.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the anti-leakage stop valve which has the advantages of good sealing effect and the like and solves the problems in the background art.

(II) technical scheme

In order to achieve the purpose of good sealing effect, the utility model provides the following technical scheme: the utility model provides a stop valve of preventing leaking, includes the valve body, the inside swing joint of valve body has the valve clack, the top fixedly connected with valve rod of valve clack, the outer wall fixedly connected with sealing member of valve rod, the top fixedly connected with connecting rod of valve rod, the top fixedly connected with stem of connecting rod.

The clamping groove is formed in the top end of the valve body, the clamping block is movably connected to the top end of the clamping groove, the first sealing ring is fixedly connected to the top end of the clamping block, the sealing gasket is fixedly connected to the inner wall of the first sealing ring, the connecting piece is fixedly connected to the top end of the first sealing ring, the second sealing ring is movably connected to the front side of the first sealing ring, the stop valve can have a good sealing effect, sealing between the valve rod and the valve body is convenient to improve, sealing between the stop valve and the valve body is improved, sealing between the stop valve and pipeline is improved, leakage preventing effect of the stop valve in the use process is effectively improved, and therefore practicability of the stop valve is improved to a certain extent.

Preferably, the shape and the size of the clamping groove are matched with those of the clamping block, and the first sealing ring is movably connected with the valve body through the clamping groove and the clamping block, so that the stability and the tightness of the connection of the first sealing ring and the valve body are improved.

Preferably, the top fixedly connected with fixed section of thick bamboo of valve body, the outer wall fixedly connected with connecting plate of fixed section of thick bamboo, the spacing groove has been seted up to the inside of connecting plate, the inside swing joint of fixed section of thick bamboo has the movable rod, the one end fixedly connected with stopper of movable rod, the one end fixedly connected with bearing of movable rod, the outer wall fixedly connected with of bearing matches the piece, the matching groove has been seted up to the outer wall of connecting rod, one side fixedly connected with spring of matching the piece is convenient for lock the stop valve of closed state, avoids external mistake to touch the state change that causes the stop valve, improves the closed stability of stop valve.

Preferably, the shape and the size of the limiting groove are mutually matched with those of the limiting block, and the connecting plate is movably connected with the movable rod through the limiting groove and the limiting block, so that the position of the matching block is conveniently locked.

Preferably, the movable rod penetrates through the inside of the fixed cylinder and extends to one side of the fixed cylinder, and the movable rod is movably connected with the fixed cylinder, so that the position of the limiting block and the position of the matching block are conveniently adjusted.

Preferably, a bearing groove is formed in one side of the matching block, and the shape and the size of the bearing groove are mutually matched with those of the bearing, so that the angle adjustment of the limiting block is conveniently driven.

Preferably, the shape and the size of the matching block are matched with the shape and the size of the matching groove, and the movable rod is movably connected with the connecting rod through the matching block and the matching groove, so that the state of the connecting rod and the valve rod can be locked conveniently.

(III) beneficial effects

Compared with the prior art, the utility model provides the leakage-proof stop valve, which has the following beneficial effects:

1. this stop valve of preventing leaking through sealing member, draw-in groove, fixture block, first sealing ring, sealed pad, connecting piece and the second sealing ring that set up, can make this stop valve have good sealed effect, is convenient for improve the leakproofness between valve rod and the valve body, improves the leakproofness of stop valve and pipe connection simultaneously, effectively improves the effect of preventing leaking of stop valve in the use to the practicality of this stop valve has obtained certain promotion.

2. This prevent stop valve that leaks through fixed section of thick bamboo, spacing groove, movable rod, bearing, matching piece and the spring that set up, can make this stop valve have good locking effect, is convenient for lock the stop valve of closed state, avoids external mistake to touch the state change that causes the stop valve, improves the closed stability of stop valve to make the suitability of this stop valve obtain certain promotion.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is a perspective view of the connection structure between the stopper and the spring according to the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

fig. 5 is an enlarged schematic view of the structure of fig. 1 at B according to the present utility model.

In the figure: 1. a valve body; 2. a valve flap; 3. a valve stem; 4. a seal; 5. a connecting rod; 6. a rotating handle; 7. a clamping groove; 8. a clamping block; 9. a first seal ring; 10. a sealing gasket; 11. a connecting piece; 12. a second seal ring; 13. a fixed cylinder; 14. a connecting plate; 15. a limit groove; 16. a movable rod; 17. a limiting block; 18. a bearing; 19. a matching block; 20. a matching groove; 21. and (3) a spring.

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.

Example 1

The preferred embodiments of the leak-proof shut-off valve provided by the present utility model are shown in fig. 1 to 5: the utility model provides a stop valve of preventing leaking, includes valve body 1, the inside swing joint of valve body 1 has valve clack 2, the top fixedly connected with valve rod 3 of valve clack 2, the outer wall fixedly connected with sealing member 4 of valve rod 3, the top fixedly connected with connecting rod 5 of valve rod 3, the top fixedly connected with stem 6 of connecting rod 5.

The draw-in groove 7 has been seted up on the top of valve body 1, the inside swing joint of draw-in groove 7 has fixture block 8, the first sealing ring 9 of top fixedly connected with of fixture block 8, the inner wall fixedly connected with of first sealing ring 9 is sealed fills up 10, the top fixedly connected with connecting piece 11 of first sealing ring 9, the positive swing joint of first sealing ring 9 has second sealing ring 12, can make this stop valve have good sealed effect, be convenient for improve the leakproofness between valve rod 3 and the valve body 1, improve the leakproofness of stop valve and pipe connection simultaneously, effectively improve the effect of stop valve leak protection in the use, thereby make the practicality of this stop valve obtain certain promotion.

In this embodiment, the shape and size of the clamping groove 7 and the shape and size of the clamping block 8 are matched, and the first sealing ring 9 is movably connected with the valve body 1 through the clamping groove 7 and the clamping block 8, so that the stability and the tightness of the connection between the first sealing ring 9 and the valve body 1 are improved.

Example 2

On the basis of embodiment 1, a preferred embodiment of the leak-proof stop valve provided by the present utility model is shown in fig. 1 to 5: the top fixedly connected with fixed section of thick bamboo 13 of valve body 1, the outer wall fixedly connected with connecting plate 14 of fixed section of thick bamboo 13, limit groove 15 has been seted up to the inside of connecting plate 14, the inside swing joint of fixed section of thick bamboo 13 has movable rod 16, the one end fixedly connected with stopper 17 of movable rod 16, the one end fixedly connected with bearing 18 of movable rod 16, the outer wall fixedly connected with of bearing 18 matches piece 19, match groove 20 has been seted up to the outer wall of connecting rod 5, one side fixedly connected with spring 21 of matching piece 19, be convenient for lock the stop valve of closed state, avoid external mistake to touch the state change that causes the stop valve, improve the closed stability of stop valve.

In this embodiment, the shape and size of the limiting groove 15 and the shape and size of the limiting block 17 are matched, and the connecting plate 14 is movably connected with the movable rod 16 through the limiting groove 15 and the limiting block 17, so that the position of the matching block 19 is conveniently locked.

Further, the movable rod 16 penetrates through the inside of the fixed cylinder 13 and extends to one side of the fixed cylinder 13, and the movable rod 16 is movably connected with the fixed cylinder 13, so that the position adjustment of the limiting block 17 and the matching block 19 is conveniently driven.

Furthermore, a bearing groove is formed on one side of the matching block 19, and the shape and size of the bearing groove are matched with those of the bearing 18, so that the angle adjustment of the limiting block 17 is conveniently driven.

In addition, the shape and the size of the matching block 19 are matched with those of the matching groove 20, and the movable rod 16 is movably connected with the connecting rod 5 through the matching block 19 and the matching groove 20, so that the states of the connecting rod 5 and the valve rod 3 are conveniently locked.

When the valve is used, the tightness of the valve rod 3 and the valve body 1 is improved through the arrangement of the sealing piece 4, meanwhile, the first sealing ring 9 and the second sealing ring 12 are clamped with the valve body 1 and the connecting pipeline, the connecting piece 11 is connected through the fixing bolt, the installation of the first sealing ring 9 and the second sealing ring 12 and the valve body 1 and the connecting pipeline is achieved, the tightness of the valve body 1 and the connecting pipeline is improved through the arrangement of the sealing gasket 10, after the valve body 1 is in a closed state, the limiting block 17 is rotated ninety degrees, the limiting block 17 and the limiting groove 15 on the connecting plate 14 are in parallel fit states in different planes, the limiting block 17 is loosened again, the elastic force of the spring 21 is recovered, the movable rod 16 and the limiting block 17 are driven to be separated from the connecting plate 14, the matching block 19 is driven to stretch into the inside the matching groove 20, the connecting rod 5 is locked, and accordingly the work is completed.

To sum up, this leak-proof stop valve can make this stop valve have good sealed effect, be convenient for improve the leakproofness between valve rod 3 and the valve body 1, improve the leakproofness of stop valve and pipe connection simultaneously, effectively improve the effect that the stop valve was prevented leaking in the use, thereby make the practicality of this stop valve obtain certain promotion, this stop valve has good locking effect, be convenient for lock the stop valve of closed state, avoid external mistake to touch the state change that causes the stop valve, improve the stability of stop valve closure, thereby make the suitability of this stop valve obtain certain promotion.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 leak-proof shut-off valve comprising a valve body (1), characterized in that: the valve is characterized in that a valve clack (2) is movably connected inside the valve body (1), a valve rod (3) is fixedly connected to the top end of the valve clack (2), a sealing piece (4) is fixedly connected to the outer wall of the valve rod (3), a connecting rod (5) is fixedly connected to the top end of the valve rod (3), and a rotating handle (6) is fixedly connected to the top end of the connecting rod (5);

clamping grooves (7) are formed in the top end of the valve body (1), clamping blocks (8) are movably connected in the clamping grooves (7), first sealing rings (9) are fixedly connected to the top ends of the clamping blocks (8), sealing gaskets (10) are fixedly connected to the inner walls of the first sealing rings (9), connecting pieces (11) are fixedly connected to the top ends of the first sealing rings (9), and second sealing rings (12) are movably connected to the front faces of the first sealing rings (9).

2. A leak-proof shut-off valve as defined in claim 1, wherein: the shape and the size of the clamping groove (7) are matched with those of the clamping block (8), and the first sealing ring (9) is movably connected with the valve body (1) through the clamping groove (7) and the clamping block (8).

3. A leak-proof shut-off valve as defined in claim 1, wherein: the utility model discloses a valve body, including valve body (1), fixed cylinder (13) of top fixedly connected with, the outer wall fixedly connected with connecting plate (14) of fixed cylinder (13), spacing groove (15) have been seted up to the inside of connecting plate (14), the inside swing joint of fixed cylinder (13) has movable rod (16), the one end fixedly connected with stopper (17) of movable rod (16), the one end fixedly connected with bearing (18) of movable rod (16), the outer wall fixedly connected with matching block (19) of bearing (18), matching groove (20) have been seted up to the outer wall of connecting rod (5), one side fixedly connected with spring (21) of matching block (19).

4. A leak-proof shut-off valve as defined in claim 3, wherein: the shape and the size of the limiting groove (15) are matched with those of the limiting block (17), and the connecting plate (14) is movably connected with the movable rod (16) through the limiting groove (15) and the limiting block (17).

5. A leak-proof shut-off valve as defined in claim 3, wherein: the movable rod (16) penetrates through the inside of the fixed cylinder (13) and extends to one side of the fixed cylinder (13), and the movable rod (16) is movably connected with the fixed cylinder (13).

6. A leak-proof shut-off valve as defined in claim 3, wherein: a bearing groove is formed in one side of the matching block (19), and the shape and the size of the bearing groove are matched with those of the bearing (18).

7. A leak-proof shut-off valve as defined in claim 3, wherein: the shape and the size of the matching block (19) are matched with those of the matching groove (20), and the movable rod (16) is movably connected with the connecting rod (5) through the matching block (19) and the matching groove (20).