CN215059970U

CN215059970U - Valve shaft seal structure

Info

Publication number: CN215059970U
Application number: CN202121519138.4U
Authority: CN
Inventors: 王樟; 王宝聪; 余周朝
Original assignee: Jugao Valve Co ltd
Current assignee: Jugao Valve Co ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2021-12-07
Anticipated expiration: 2031-07-06

Abstract

The utility model discloses a valve shaft seals structure, including valve body, valve rod, be provided with the seal cover in the valve body, just the seal cover is then established on the valve rod, be formed with on the seal cover outwards rather than the bulge of valve body inner wall laminating, the threaded rod is vertically alternate on the bulge, just threaded rod top department is connected with the gear, it is connected with the ring gear still to rotate on the bulge, seted up in the valve body with the thread groove that threaded rod quantity corresponds. Through the design have bulge, joint strip, seal groove, ring gear, threaded rod, thread groove, the ring gear is dialled to the available hand of operating personnel makes it rotatory on the bulge to the ring gear is rather than gear engagement, forces its threaded rod to rotate in the thread bush, can make the bulge carry the seal cover to push down the slip in the valve body, thereby joint strip will imbed the sealed effect that can strengthen the valve body in the seal groove.

Description

Valve shaft seal structure

Technical Field

The utility model relates to a valve shaft seal structure specifically is a valve shaft seal structure.

Background

The valve is a pipeline accessory used for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameters of a conveying medium, and can be divided into a shut-off valve, a check valve, an adjusting valve and the like according to functions of the valve, the pressure valve is one of the valves, an existing valve shaft seal is in a packing sealing mode and plays a sealing role, but the existing valve shaft structure is poor in sealing performance and cannot be adjusted independently to enhance the sealing performance of the existing valve shaft structure. Therefore, the utility model provides a valve shaft seal structure to solve the problem that proposes among the above-mentioned background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a valve shaft seals structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a valve shaft seal structure comprises a valve body and a valve rod, wherein a seal sleeve is arranged in the valve body, the seal sleeve is sleeved on the valve rod, a protruding part which is outwards attached to the inner wall of the valve body is formed on the seal sleeve, a threaded rod vertically penetrates through the protruding part, a gear is connected to the top end of the threaded rod, a toothed ring is rotatably connected to the protruding part, and threaded grooves corresponding to the number of the threaded rod are formed in the valve body;

the lower part of the convex part is connected with an annular sealing rubber strip, and a sealing groove matched with the sealing rubber strip in an embedded mode is formed in the inner wall of the valve body.

As a further aspect of the present invention, the threaded rod is connected to the thread groove by a thread.

As a still further aspect of the present invention, the gear is fixed to the threaded rod, and the ring gear is engaged with the gear.

As the utility model discloses scheme further again, still be provided with spacing ring and sealing ring on the valve rod, the sealing ring is located the spacing ring below.

As a further proposal, the valve rod can rotate in the sealing sleeve in a limiting way through the limiting ring and the sealing ring.

As a further proposal, the sealing sleeve can slide in the valve body.

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

through the design have bulge, joint strip, seal groove, ring gear, threaded rod, thread groove, the ring gear is dialled to the available hand of operating personnel makes it rotatory on the bulge to the ring gear is rather than gear engagement, forces its threaded rod to rotate in the thread bush, can make the bulge carry the seal cover to push down the slip in the valve body, thereby joint strip will imbed the sealed effect that can strengthen the valve body in the seal groove.

Drawings

Fig. 1 is a schematic structural diagram of a valve shaft seal structure.

Fig. 2 is a schematic cross-sectional view of a valve shaft seal structure.

Fig. 3 is a partial structural diagram of a valve shaft seal structure.

In the figure: 1. a valve body; 2. a valve stem; 3. sealing sleeves; 4. a projection; 5. a sealing groove; 6. sealing rubber strips; 7. a toothed ring; 8. a gear; 9. a threaded rod; 10. a thread groove; 11. a limiting ring; 12. and (4) a sealing ring.

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.

Referring to fig. 1 to 3, in an embodiment of the present invention, a valve shaft seal structure includes a valve body 1, a valve rod 2, a sealing sleeve 3 is disposed in the valve body 1, the sealing sleeve 3 can slide in the valve body 1, the sealing sleeve 3 is sleeved on the valve rod 2, a limiting ring 11 and a sealing ring 12 are further disposed on the valve rod 2, the sealing ring 12 is disposed below the limiting ring 11, the valve rod 2 can rotate in the sealing sleeve 3 in a limiting manner through the limiting ring 11 and the sealing ring 12, a protruding portion 4 outwardly attached to an inner wall of the valve body 1 is formed on the sealing sleeve 3, a threaded rod 9 is vertically inserted into the protruding portion 4, the threaded rod 9 is in threaded connection with a threaded groove 10, a gear 8 is fixed to the threaded rod 9, a gear ring 7 is engaged with the gear 8, a gear 8 is connected to a top end of the threaded rod 9, a gear ring 7 is further rotatably connected to the protruding portion 4, threaded grooves 10 corresponding to the number of the threaded rods 9 are disposed in the valve body 1, an operator can stir the toothed ring 7 by hand to enable the toothed ring 7 to rotate on the protruding part 4, so that the toothed ring 7 is meshed with the gear 8 of the toothed ring, the threaded rod 9 of the toothed ring is forced to rotate in the threaded sleeve 10, the protruding part 4 can enable the sealing sleeve 3 to be carried by the protruding part 4 to be pressed downwards and slide in the valve body 1, and the sealing rubber strip 6 can be embedded into the sealing groove 5; an annular sealing rubber strip 6 is connected below the protruding part 4, and a sealing groove 5 matched with the sealing rubber strip 6 in an embedded mode is formed in the inner wall of the valve body 1.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A valve shaft seal structure comprises a valve body (1) and a valve rod (2), and is characterized in that a seal sleeve (3) is arranged in the valve body (1), the seal sleeve (3) is sleeved on the valve rod (2), a convex part (4) which is outwards attached to the inner wall of the valve body (1) is formed on the seal sleeve (3), a threaded rod (9) vertically penetrates through the convex part (4), a gear (8) is connected to the top end of the threaded rod (9), a toothed ring (7) is rotatably connected to the convex part (4), and threaded grooves (10) corresponding to the number of the threaded rods (9) are formed in the valve body (1);

the lower portion of the protruding portion (4) is connected with an annular sealing rubber strip (6), and a sealing groove (5) matched with the sealing rubber strip (6) in an embedded mode is formed in the inner wall of the valve body (1).

2. The valve shaft seal structure of claim 1, wherein the threaded rod (9) is threadedly connected to the threaded groove (10).

3. The valve shaft seal of claim 1 wherein the gear (8) is fixed to the threaded rod (9) and the gear ring (7) engages the gear (8).

4. The valve shaft seal structure of claim 1, wherein the valve rod (2) is further provided with a limit ring (11) and a sealing ring (12), and the sealing ring (12) is located below the limit ring (11).

5. The valve shaft seal structure of claim 4, wherein the valve rod (2) can perform limited rotation in the sealing sleeve (3) through a limiting ring (11) and a sealing ring (12).

6. The valve shaft seal structure of claim 1, wherein the sealing sleeve (3) is slidable within the valve body (1).