CN214331670U

CN214331670U - Valve rod sealing structure of fixed ball valve

Info

Publication number: CN214331670U
Application number: CN202023306609.1U
Authority: CN
Inventors: 陆春琪; 吕先君; 邱孝正; 朱卫
Original assignee: Suzhou Lete Valve Co ltd
Current assignee: Suzhou Lete Valve Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-01
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a valve rod seal structure of fixed ball valve, which comprises a valve body, be provided with the conveyer trough in the valve body, and be provided with the valve groove in the valve body, be provided with the spheroid in the valve groove, position corresponding with the valve groove in the conveyer trough just is located the spheroid both sides and all is provided with the draw-in groove, two all be provided with the sealing ring in the draw-in groove, the top of valve body is provided with the intercommunication groove that is linked together with the valve groove, the intercommunication inslot is provided with the valve rod, the bottom of valve rod is connected with spheroidal top, and the surface of valve rod is provided with explosion-proof ring, explosion-proof ring's top is provided with the first sealing washer of nestification on the valve rod, intercommunication inslot wall is provided with the second recess, be provided with the second sealing washer in the second recess. The utility model discloses in, through the setting of explosion-proof ring and first sealing washer structure, can play stable explosion-proof guard action, also can guarantee valve rod structure and valve groove hookup location and follow-up leakproofness that sets up the sealing washer structure simultaneously.

Description

Valve rod sealing structure of fixed ball valve

Technical Field

The utility model relates to a valve structure technical field especially relates to a valve rod seal structure of fixed ball valve.

Background

The fixed ball valve is a new generation high-performance ball valve, is suitable for long-distance pipelines and general industrial pipelines, is specially considered in the design of strength, safety, severe environment resistance and the like, is suitable for various corrosive and non-corrosive media, is a control device of the fixed ball valve in a valve rod structure, and has the vital performance of a valve body, so that a certain requirement is met for a valve rod sealing structure of the fixed ball valve;

the valve rod seal structure of some fixed ball valves that have now, its valve rod intercommunication position has put single sealing washer structure setting more, such mode of setting, can only single play sealed effect, it is too big to receive pressure when valve body structure, the valve rod skew appears easily in light then, the condition that leads to the leakproofness of structure to descend, the condition of ring is exploded to serious can appear, lead to valve body structure to scrap, the mounted position of conventional valve body structure lacks sealed effect simultaneously, the condition of outside-in infiltration often appears easily, long-term soaking leads to certain damage to valve rod inner structure easily, the structure lacks the protectiveness.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the valve rod seal structure of a fixed ball valve that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a valve rod sealing structure of a fixed ball valve comprises a valve body, wherein a conveying groove is arranged in the valve body, a valve groove is arranged in the valve body, a ball body is arranged in the valve groove, clamping grooves are formed in the conveying groove, the positions, corresponding to the valve groove, of the conveying groove and the positions, located on the two sides of the ball body, of the conveying groove, sealing rings are arranged in the two clamping grooves, a communicating groove communicated with the valve groove is formed in the top of the valve body, a valve rod is arranged in the communicating groove, the bottom end of the valve rod is connected with the top of the ball body, an anti-explosion ring is arranged on the outer surface of the valve rod, a first sealing ring nested on the valve rod is arranged at the top of the anti-explosion ring, a second groove is formed in the inner wall of the communicating groove, a second sealing ring is arranged in the second groove, a mounting groove is formed in the top of the valve body, a mounting block nested in the outer surface of the valve rod is arranged in the mounting groove, a third groove is arranged at the bottom of the mounting groove and the position, corresponding to the communicating groove, a third sealing ring nested on the outer surface of the valve rod is arranged in the third groove, a fourth groove is arranged at the connecting position of the mounting block and the valve rod, a fourth sealing ring is arranged in the fourth groove, and a fastening bolt is arranged on the mounting block.

As a further description of the above technical solution:

the bottom in the valve groove is rotatably connected with a fixed shaft connected with the bottom of the ball body.

As a further description of the above technical solution:

and a first groove which is in nested fit with the first sealing ring is arranged at the position, corresponding to the communicating groove, of the top of the valve groove.

As a further description of the above technical solution:

and a thread groove in thread fit with the fastening bolt is arranged at the bottom of the inner wall of the mounting groove.

As a further description of the above technical solution:

the top of the valve rod is provided with a square head.

As a further description of the above technical solution:

and fixing flanges are arranged at the two ends of the valve body.

The utility model discloses following beneficial effect has:

the valve rod sealing structure of the fixed ball valve can play a stable anti-explosion protection role through the arrangement of the anti-explosion ring and the first sealing ring structure, can also ensure the connection position of the valve rod structure and a valve groove and the sealing property of the subsequent sealing ring structure, can ensure the sealing property of the installation and fixation of the installation block structure through the arrangement of the third sealing ring, can effectively ensure the sealing effect of the whole valve rod structure by matching with the sealing ring structures of other positions, effectively solves the problem that the water seeps into the valve rod from the outside, can effectively ensure the sealing stability of the whole structure through the internal and external synchronous sealing protection, solves the problems that the valve rod sealing structure of some existing fixed ball valves has more single sealing ring structures at the communication position of the valve rod, can only singly play a sealing effect in the arrangement mode, and when the valve body structure is over-stressed, the valve rod skew then appears easily, leads to the circumstances that the leakproofness of structure descends, and the serious can appear exploding the condition of ring, leads to valve body structure to scrap, and conventional valve body structure's mounted position lacks sealed effect simultaneously, often appears the outside-in condition of infiltration easily, and long-term soaking causes certain damage to valve rod inner structure easily, and the structure lacks the protectiveness.

Drawings

Fig. 1 is a front view of a valve rod sealing structure of a fixed ball valve according to the present invention;

fig. 2 is a valve rod structure end view of a valve rod sealing structure of the fixed ball valve provided by the present invention;

fig. 3 is an enlarged view of a portion a in fig. 1 of a valve stem sealing structure of a fixed ball valve according to the present invention.

Illustration of the drawings:

1. a valve body; 2. a conveying trough; 3. a valve spool; 4. a sphere; 5. a card slot; 6. a seal ring; 7. a fixed shaft; 8. a communicating groove; 9. a valve stem; 10. an explosion-proof ring; 11. a first seal ring; 12. a first groove; 13. a second groove; 14. a second seal ring; 15. mounting grooves; 16. mounting blocks; 17. a third groove; 18. a third seal ring; 19. a fourth groove; 20. a fourth seal ring; 21. fastening a bolt; 22. a thread groove; 23. a square head; 24. and (5) fixing the flange.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: a valve rod sealing structure of a fixed ball valve comprises a valve body 1, wherein a conveying groove 2 is arranged in the valve body 1, a valve groove 3 is arranged in the valve body 1, a ball 4 is arranged in the valve groove 3, clamping grooves 5 are arranged in the conveying groove 2 corresponding to the valve groove 3 and on two sides of the ball 4, sealing rings 6 are arranged in the two clamping grooves 5, a communicating groove 8 communicated with the valve groove 3 is arranged at the top of the valve body 1, a valve rod 9 is arranged in the communicating groove 8, the bottom end of the valve rod 9 is connected with the top of the ball 4, an anti-explosion ring 10 is arranged on the outer surface of the valve rod 9, a first sealing ring 11 embedded on the valve rod 9 is arranged at the top of the anti-explosion ring 10, a second groove 13 is arranged on the inner wall of the communicating groove 8, a second sealing ring 14 is arranged in the second groove 13, a mounting groove 15 is arranged at the top of the valve body 1, and a mounting block 16 sleeved on the outer surface of the valve rod 9 is embedded in the mounting groove 15, a third groove 17 is formed in the bottom of the mounting groove 15 and corresponds to the communicating groove 8, a third sealing ring 18 nested on the outer surface of the valve rod 9 is arranged in the third groove 17, a fourth groove 19 is formed in the mounting block 16 and is connected with the valve rod 9, a fourth sealing ring 20 is arranged in the fourth groove 19, and a fastening bolt 21 is arranged on the mounting block 16.

The bottom in the valve groove 3 is rotatably connected with a fixed shaft 7 connected with the bottom of the ball body 4, and the structure of the whole valve body 1 can be ensured to stably operate.

The top of the valve spool 3 is provided with a first groove 12 which is matched with the first sealing ring 11 in a nested manner at a position corresponding to the communicating groove 8, so that the structure can be ensured to play a stable sealing effect.

The bottom of the inner wall of the mounting groove 15 is provided with a thread groove 22 which is in thread fit with the fastening bolt 21, and the mounting block 16 can be stably positioned and fixed on the valve body 1 structure through the structure, so that the stability of the whole structure connection is ensured.

The top of valve rod 9 is provided with square head 23, can conveniently carry out the butt joint installation with the action bars through the setting of structure.

Both ends position of valve body 1 all is provided with mounting flange 24, can conveniently carry out the butt joint installation with pipeline through the setting of structure.

The working principle is as follows: when using the valve rod seal structure of fixed ball valve, through explosion-proof ring 10 and the cooperation second sealing washer 14 of setting up of first sealing washer 11 structure, can guarantee the butt joint of whole valve rod 9 stable in structure with spheroid 4 structure, be difficult for leading to the valve rod 9 structure to take place the skew condition that sealed effect descends because of pressure influence, the stability of whole valve rod 9 structure has been guaranteed, through the setting of third sealing washer 18 with fourth sealing washer 20, can guarantee the leakproofness of valve rod 9 mounted position, can effectively prevent the inside condition of external water infiltration valve rod 9 hookup location, overall structure sets up through the cooperation of a plurality of seal structure, can guarantee the stability of the operation of valve rod 9 structure, also can play the sealed guard action of deep level simultaneously.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a valve rod seal structure of fixed ball valve, includes valve body (1), its characterized in that: a conveying groove (2) is arranged in the valve body (1), valve grooves (3) are arranged in the valve body (1), a ball body (4) is arranged in the valve groove (3), clamping grooves (5) are arranged in the conveying groove (2) corresponding to the valve grooves (3) and on two sides of the ball body (4), sealing rings (6) are arranged in the two clamping grooves (5), a communicating groove (8) communicated with the valve grooves (3) is formed in the top of the valve body (1), a valve rod (9) is arranged in the communicating groove (8), the bottom end of the valve rod (9) is connected with the top of the ball body (4), an anti-explosion ring (10) is arranged on the outer surface of the valve rod (9), a first sealing ring (11) nested on the valve rod (9) is arranged at the top of the anti-explosion ring (10), a second groove (13) is arranged on the inner wall of the communicating groove (8), be provided with second sealing washer (14) in second recess (13), the top of valve body (1) is provided with mounting groove (15), nested installation piece (16) that is provided with the cover and connects at valve rod (9) surface in mounting groove (15), the bottom and the corresponding position of intercommunication groove (8) of mounting groove (15) are provided with third recess (17), be provided with third sealing washer (18) of nested nestification at valve rod (9) surface in third recess (17), meet the position with valve rod (9) in installation piece (16) and be provided with fourth recess (19), be provided with fourth sealing washer (20) in fourth recess (19), be provided with fastening bolt (21) on installation piece (16).

2. A stem seal structure of a stationary ball valve according to claim 1, wherein: the bottom in the valve groove (3) is rotationally connected with a fixed shaft (7) connected with the bottom of the ball body (4).

3. A stem seal structure of a stationary ball valve according to claim 1, wherein: and a first groove (12) which is in nested fit with the first sealing ring (11) is arranged at the position, corresponding to the communicating groove (8), of the top of the valve groove (3).

4. A stem seal structure of a stationary ball valve according to claim 1, wherein: and a thread groove (22) in threaded fit with the fastening bolt (21) is arranged at the bottom of the inner wall of the mounting groove (15).

5. A stem seal structure of a stationary ball valve according to claim 1, wherein: the top of the valve rod (9) is provided with a square head (23).

6. A stem seal structure of a stationary ball valve according to claim 1, wherein: and fixing flanges (24) are arranged at the two ends of the valve body (1).