CN218913788U

CN218913788U - Composite flat valve

Info

Publication number: CN218913788U
Application number: CN202223022512.7U
Authority: CN
Inventors: 陈兆阳
Original assignee: Jiangsu Xinde Petroleum Machinery Co ltd
Current assignee: Jiangsu Xinde Petroleum Machinery Co ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-04-25
Anticipated expiration: 2032-11-15

Abstract

The utility model relates to a composite flat valve. The main part flashboard of the flat valve is composed of two parts, one part is an outer frame, the other part is a core board which is driven by a valve rod to move up and down, the core board is made of high wear-resistant materials and is inlaid in a frame hole of the outer frame, the core board moves up and down along with the outer frame on one hand to realize the opening or closing of the valve board, and on the other hand is in direct contact with a valve seat, the two side surfaces of the core board are worn in the moving process, and the service life is long because the core board is made of high wear-resistant materials, and even if the wear amount of the two side surfaces of the core board is large, the core board can be folded down for repairing, so that the service life is further prolonged, and the flashboard does not need to be replaced. Thus, the present utility model has: good wear resistance, long service life, convenient assembly and replacement, and the like.

Description

Composite flat valve

Technical Field

The utility model relates to a flat valve, in particular to a flat valve with a flashboard of a composite structure, and belongs to the technical field of mechanical design and manufacture.

Background

The valve is a common control element for the hydraulic pipeline and is suitable for the conveying pipelines of natural gas, petroleum, chemical industry and the like. The valve has various kinds, and one of the flat valves is widely used because of the advantages of small opening and closing moment, large pressure, reliable sealing performance and the like. When the valve is opened, the hand wheel is rotated anticlockwise, the flashboard moves upwards, the diversion hole is communicated with the valve seat hole, the through hole is gradually enlarged along with the rising of the flashboard, and when the valve is at the limit position, the diversion hole is fully opened with the valve seat hole; when the valve is closed, the hand wheel is rotated clockwise, the flashboard moves downwards to the bottom, and the diversion hole and the valve seat hole are completely staggered to be closed. In the working conditions of oil field fracturing and oil and gas production, the flat valve in the pipeline is normally open. The valve plate which is a main component of the flat valve has serious abrasion because the orifice of the valve plate is in a high-pressure flushing state for a long time, the service life of the valve plate is greatly influenced, and the problem is long-term puzzled by engineering technicians in the field, so that the existing flashboard structure is necessary to be further optimized.

Disclosure of Invention

Aiming at the problems pointed out by the background technology, the utility model provides a composite flat valve, wherein a replaceable high-hardness core plate is additionally arranged in an original flashboard, so that the purpose of prolonging the service life of the flashboard is achieved.

In order to achieve the above purpose, the utility model is implemented by adopting the following technical scheme: a composite flat valve comprising: valve body, sealed disk seat and flashboard, sealed disk seat set up in the valve body, the flashboard centre gripping is in the sealed disk seat about between slide, the water conservancy diversion hole that is equipped with on disk seat hole and the flashboard that is equipped with on the sealed disk seat constitutes the fluid passage of flat valve jointly with the through-flow hole that is equipped with in the valve body, its characterized in that:

the flashboard is of a composite structure and consists of two parts, wherein one part is an outer frame, the other part is a core board, the core board is a high wear-resistant material flat plate provided with a diversion hole, and the high wear-resistant material flat plate is inlaid in a frame hole of the outer frame;

the flashboard part clamped by the sealing valve seat is a core plate, and the friction surface between the flashboard part and the sealing valve seat is two side surfaces of the core plate.

Preferably, the core plate is in a rectangular plate shape, the length of the core plate is larger than twice the outer diameter of the sealing valve seat, the width of the core plate is larger than the outer diameter of the sealing valve seat, and the thickness of the core plate is larger than or equal to the thickness of the outer frame.

Further, the outer frame holes and the core plate are rectangular in appearance, and arc transition is arranged at four corners.

Preferably, the shape of the core plate is similar to the shape of a frame hole of the outer frame, and the core plate is embedded in the frame hole in an interference fit mode.

In some embodiments, the core plate is an inner layer and outer layer composite structure, the inner layer is made of common steel, and the outer layer is hard alloy sprayed on the surface of the inner layer.

The utility model uses two parts of shutter plate, one part is outer frame, which is driven by valve rod to move up and down, the other part is core plate, which is embedded in the frame hole of outer frame, to realize the shutter plate opening or closing, and the other part is contacted with valve seat directly, to wear the two sides of core plate, to prolong the service life, to repair core plate, to prolong the service life. Thus, the present utility model has: good wear resistance, long service life, convenient assembly and replacement, and the like.

Drawings

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

FIG. 2 is a schematic view of the ram assembly of FIG. 1 in a removed configuration;

FIG. 3 isbase:Sub>A schematic view of the structure of section A-A in FIG. 2.

In the

drawings

1, 2 and 3, 1 is a valve body, 2 is a valve seat, 3 is a core plate, 4 is a valve rod, 5 is a valve rod sleeve, and 6 is a flashboard outer frame.

Detailed Description

The utility model is further explained below with reference to the drawings:

as shown in fig. 1, 2 and 3, in an embodiment of the present utility model, a core plate 3 is embedded in a gate frame 6, the gate frame 6 is fixedly connected with a valve rod 4, the valve rod 4 is screwed in a valve rod sleeve 5, a gate assembly formed by the valve rod 4, the gate frame 6 and the core plate 3 is screwed in the valve rod sleeve 5, the valve rod sleeve 5 rotates forward and backward to drive the valve rod 4 to move up and down, the valve rod 4 is fixedly connected with the gate frame 6 to drive the gate frame 6 to move up and down, the core plate 3 embedded in the gate frame 6 moves up and down along with the gate frame 6, when a guide hole on the core plate 3 is completely communicated with a valve seat hole on a valve seat 2 and a through hole in a valve body 1, the flat valve is opened, and when the guide hole on the core plate 3 is completely staggered with the valve seat hole on the valve seat 2 and the through hole in the valve body 1, the flat valve is closed.

As can be seen from fig. 1, the core plate 3 has a thickness greater than that of the shutter frame 6, so that the valve seat 2 clamps both side surfaces of the core plate 3 without contacting the shutter frame 6, and both side surfaces of the core plate 3 are worn during the up-and-down operation of the shutter assembly. The core plate 3 is made of high wear-resistant materials, so that the wear resistance is extremely high, and the service life of the flat valve can be effectively prolonged even if the core plate 3 is worn by a certain amount and the core plate 3 is taken out of the flashboard outer frame 6 for repairing or replacing the core plate 3.

Claims

1. A composite flat valve comprising: valve body, sealed disk seat and flashboard, sealed disk seat set up in the valve body, the flashboard centre gripping is in the sealed disk seat about between slide, the disk seat hole that is equipped with on the sealed disk seat and the water conservancy diversion hole that is equipped with on the flashboard constitute the fluid passage of flat valve jointly with the water conservancy diversion hole that is equipped with in the valve body, its characterized in that:

2. A composite flat valve according to claim 1, wherein: the core plate is in a rectangular plate shape, the length of the core plate is larger than twice the outer diameter of the sealing valve seat, the width of the core plate is larger than the outer diameter of the sealing valve seat, and the thickness of the core plate is larger than the thickness of the outer frame.

3. A composite flat valve according to claim 1, wherein: the outer frame holes and the core plate are rectangular in appearance, and arc transition is arranged at four corners.

4. A composite flat valve according to claim 1 or 3, characterized in that: the shape of the core plate is similar to the shape of the frame hole of the outer frame, and the core plate is inlaid in the frame hole in an interference fit mode.

5. A composite flat valve according to claim 1, wherein: the core plate is of an inner layer and outer layer composite structure, the inner layer is made of common steel, and the outer layer is made of hard alloy sprayed on the surface of the inner layer.