CN219045573U

CN219045573U - Valve seat sealing mechanism

Info

Publication number: CN219045573U
Application number: CN202320203362.5U
Authority: CN
Inventors: 陈恒忠; 陈寿俊; 柏胜
Original assignee: Yancheng Dafeng Hengli Machinery Co ltd
Current assignee: Yancheng Dafeng Hengli Machinery Co ltd
Priority date: 2023-02-14
Filing date: 2023-02-14
Publication date: 2023-05-19
Anticipated expiration: 2033-02-14

Abstract

The utility model discloses a valve seat sealing mechanism, which relates to the technical field of hydraulic valves and comprises a valve body, a valve cover, a valve seat and a valve core assembly, wherein the valve cover is tightly covered on the valve body; the valve seat comprises an outer valve seat and an inner valve seat, screw thread matching is arranged between the outer valve seat and the inner valve seat, a boss is arranged on the outer valve seat in a matching mode, and supporting force is provided for the inner valve seat; a sealing ring is arranged at the joint between the outer valve seat and the inner valve seat; the valve body is provided with a water inlet, and the valve seat is provided with a water outlet; the valve body and the valve seat are arranged in an arc surface; the valve core assembly comprises a valve, a valve rod, a locking sleeve and a limiting block. The novel valve seat is independently arranged for the outer valve seat and the inner valve seat, is tightly connected through threads, is provided with a sealing ring to isolate the outer part from the connecting part, and has good sealing performance and flexible structure.

Description

Valve seat sealing mechanism

Technical Field

The utility model belongs to the technical field of hydraulic valves, and particularly relates to a valve seat sealing mechanism.

Background

The stop valve is a tool for tightly attaching the sealing surface of the valve clack to the sealing surface of the valve seat by means of the pressure of the valve lever to prevent medium from flowing, belongs to a forced sealing valve, and is one of valves widely used. The valve seat is a detachable surface part in the valve and is used for supporting the totally closed position of the valve core and forming a sealing pair.

The sealing performance of the valve seat influences the overall stability of the valve to a certain extent, if external impurities or moisture infiltrate into the joint surface, the joint surface can be worn or eroded, and the valve seat can be worn to a certain extent in long-term cooperation with the valve, so that the sealing performance is reduced, and the valve seat needs to be replaced.

Disclosure of Invention

Based on the above-mentioned problems existing in the prior art, an object of an embodiment of the present application is to: a valve seat sealing mechanism is provided to improve the sealing property of a shut-off valve.

The application provides a valve seat sealing mechanism, which comprises a valve body, a valve cover, a valve seat and a valve core assembly, wherein the valve cover is tightly covered on the valve body, the valve seat is connected with the valve body, and the valve core assembly is arranged inside the valve body; the valve seat comprises an outer valve seat and an inner valve seat, screw thread matching is arranged between the outer valve seat and the inner valve seat, a boss is arranged on the outer valve seat in a matched mode, and supporting force is provided for the inner valve seat.

Further, a sealing ring is arranged at the joint between the outer valve seat and the inner valve seat.

Further, the valve body is provided with a water inlet, and the valve seat is provided with a water outlet; the valve body and the valve seat are arranged in a cambered surface.

Further, the valve core assembly comprises a valve, a valve rod, a locking sleeve and a limiting block, wherein one side of the valve is opened, one end of the valve rod is of an umbrella-shaped structure and extends into the opening of the valve, the locking sleeve is sleeved at the joint of the valve and the valve rod and is in threaded fit with the valve, and the limiting block is arranged at the umbrella-shaped end part of the valve rod.

Further, the other end of the valve rod is provided with a rotary handle.

Further, the valve body and the valve cover are fixedly connected through a plurality of bolts, and a sealing gasket is arranged in a gap of the connecting surface.

Furthermore, hand guards are symmetrically arranged on the valve cover.

Compared with the prior art, the utility model has the following beneficial effects: the novel valve seat structure is formed by separating the outer valve seat from the inner valve seat, so that the impact force of water flow on the whole valve seat is reduced, and the inner valve seat matched with the valve element assembly switch is independent and can be independently replaced when the later-stage part is damaged, the whole valve seat is not required to be replaced, and the flexibility of the whole structure is improved. Further, through threaded connection between outer disk seat and the interior valve seat, the compactness is high, and the junction is provided with the sealing washer and effectively keeps apart external impurity and rivers infiltration, has improved the holistic leakproofness of disk seat.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

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

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

FIG. 3 is an enlarged view of a portion of the present utility model;

wherein, each reference sign in the figure:

1. a valve body; 11. a water inlet; 2. a valve cover; 21. hand protection; 3. a valve seat; 31. an outer valve seat; 311. a boss; 32. an inner valve seat; 33. a water outlet; 4. a valve core assembly; 41. a valve; 42. a valve stem; 43. a locking sleeve; 44. a limiting block; 5. a thread; 6. a seal ring; 7. rotating the handle; 8. a bolt; 9. and a sealing gasket.

Detailed Description

The present application will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram illustrating the basic structure of the present application only by way of illustration, and therefore it shows only the constitution related to the present application.

As shown in fig. 1, the present application provides a valve seat sealing mechanism, which comprises a valve body 1, a valve cover 2, a valve seat 3 and a valve core assembly 4, wherein the valve cover 2 is tightly covered on the valve body 1, the valve seat 3 is connected with the valve body 1, and the valve core assembly 4 is arranged inside the valve body 1. The valve seat 3 comprises an outer valve seat 31 and an inner valve seat 32, wherein threads 5 are arranged between the outer valve seat 31 and the inner valve seat 32 to match, the tightness is high, and a boss 311 is arranged on the outer valve seat 31 and the inner valve seat 32 to provide supporting force for the inner valve seat 32. The outer valve seat 31 and the inner valve seat 32 are arranged separately, so that the impact force of water flow on a single valve seat unit can be effectively reduced, the inner valve seat 32 matched with the valve core assembly 4 in a switch for a long time is independent, the later-stage component can be conveniently and independently replaced when damaged, the whole valve seat 3 is not required to be replaced, and the flexibility of the whole structure is improved.

The joint between the outer valve seat 31 and the inner valve seat 32 is provided with the sealing ring 6, so that the joint surface can be isolated from the outside to prevent external impurities or water flow from penetrating into the joint surface to cause erosion and abrasion, and the overall tightness of the valve seat 3 is further improved.

The valve body 1 is provided with a water inlet 11, and the valve seat 3 is provided with a water outlet 33. The valve body 1 and the valve seat 3 are arranged in cambered surfaces, so that the impact force of water flow on the inside can be effectively reduced.

The valve core assembly 4 comprises a valve 41, a valve rod 42, a locking sleeve 43 and a limiting block 44, wherein one side of the valve 41 is opened, one end of the valve rod 42 is of an umbrella-shaped structure and stretches into the opening of the valve 41, the locking sleeve 43 is sleeved at the joint of the valve 41 and the valve rod 42 and matched with threads 5 of the valve 41, and the limiting block 44 is arranged at the umbrella-shaped end part of the valve rod 42. In operation, opening and closing of the valve is accomplished by actuating valve stem 42 to pull valve 41 away from or close inner valve seat 32.

The other end of the valve stem 42 is provided with a rotary handle 7.

The valve body 1 and the valve cover 2 are fixedly connected through a plurality of bolts 8, and a sealing gasket 9 is arranged at a gap of the connecting surface so as to improve the tightness between the valve body 1 and the valve cover 2.

The hand guards 21 are symmetrically arranged on the valve cover 2, so that supporting force is provided for the action of the valve rod 42, and the overall stability is improved.

In the description of embodiments of the present utility model, unless explicitly specified and limited otherwise, 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; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate or imply that the apparatus or elements 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 utility model.

While the above is directed to the preferred embodiments according to the present application, various changes and modifications may be made by the person skilled in the relevant art without departing from the scope of the application. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of claims.

Claims

1. A valve seat sealing mechanism, characterized in that: comprising the following steps:

a valve body (1);

the valve cover (2) is tightly covered on the valve body (1);

a valve seat (3) connected to the valve body (1);

a valve core component (4) arranged inside the valve body (1), wherein

The valve seat (3) consists of an outer valve seat (31) and an inner valve seat (32) and is connected and matched through threads (5).

2. A valve seat sealing mechanism as defined in claim 1, wherein:

the outer valve seat (31) is matched with the inner valve seat (32) and is provided with a boss (311).

3. A valve seat sealing mechanism as defined in claim 1, wherein:

a sealing ring (6) is arranged at the joint between the outer valve seat (31) and the inner valve seat (32).

4. A valve seat sealing mechanism as defined in claim 1, wherein:

a water inlet (11) is formed in the valve body (1);

the valve seat (3) is provided with a water outlet (33).

5. A valve seat sealing mechanism as defined in claim 1, wherein:

the valve body (1) and the valve seat (3) are arranged in an arc surface.

6. A valve seat sealing mechanism as defined in claim 1, wherein:

the spool assembly (4) comprises:

a valve (41) having an opening at one side;

one end of the valve rod (42) is of an umbrella-shaped structure and extends into the opening of the valve (41);

the locking sleeve (43) is sleeved at the joint of the valve (41) and the valve rod (42) and is matched with the thread (5) of the valve (41); and

and a stopper (44) provided at the umbrella-shaped end of the valve rod (42).

7. A valve seat sealing mechanism as defined in claim 6, wherein:

the other end of the valve rod (42) is provided with a rotary handle (7).

8. A valve seat sealing mechanism as defined in claim 1, wherein:

the valve body (1) and the valve cover (2) are fixedly connected through a plurality of bolts (8), and a sealing gasket (9) is arranged in a gap of the connecting surface.

9. A valve seat sealing mechanism as defined in claim 1, wherein:

hand guards (21) are symmetrically arranged on the valve cover (2).