CN219062494U

CN219062494U - Valve

Info

Publication number: CN219062494U
Application number: CN202223603928.8U
Authority: CN
Inventors: 盛一冰; 何善良; 姚勇
Original assignee: Ningbo Instrument Valve Factory
Current assignee: Ningbo Instrument Valve Factory
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-05-23
Anticipated expiration: 2032-12-31

Abstract

The utility model belongs to the technical field of valves, and provides a valve, which comprises: valve body, driving piece, valve rod, double link, push pedal mechanism, case, driving piece, valve rod setting are in the upper end of valve body, and double link, push pedal mechanism, case set up in the valve body, the driving piece links to each other with the valve rod, the one end of valve rod stretch into in the case with the double link is connected, the double link with push pedal mechanism links to each other, push pedal mechanism with the case is connected, push pedal mechanism's left and right sides all stretches out outside the case and extend to the inner wall department of case, push pedal mechanism is close to the left and right sides of case inner wall is equipped with a plurality of pulleys respectively, on the case inner wall to the pulley is equipped with the slide rail. Compared with the prior art, the utility model has the advantages that: by arranging the sliding wheels on the push plate mechanism, the sliding wheels are in sliding contact with the inner wall of the valve body, friction between the push plate mechanism and the inner wall of the valve body is reduced, and the service lives of the valve body and the push plate are prolonged.

Description

Valve

Technical Field

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

Background

The gate valve is a main control device for controlling the flow or conveying amount of powder, crystal grains, granules and small pieces of materials, and is widely used for controlling the flow change or rapidly cutting off in the industries of metallurgy, mine, building materials, grains, chemical industry and the like. The pneumatic gate valve has the advantages of simple structure, flexible operation, light weight, no blocking, being particularly suitable for conveying and flow adjustment of various solid materials and 50mm block-shaped and bulk materials, being free from angle limitation in installation and convenient in operation. In the vacuum industry, the gate valve is an important valve body for isolating two adjacent spaces, and is widely applied to various vacuum devices for isolating two areas with different vacuum degrees or isolating a vacuum environment from other gas environments.

For example, the high-stability gate valve disclosed in the patent publication No. CN211779068U has the advantages that when the existing gate valve is opened and closed, the push plate is in friction contact with the valve body, so that the abrasion is easy, and the service lives of the push plate and the valve body are reduced

Disclosure of Invention

Aiming at the current state of the art, the utility model provides the gate valve, wherein the sliding wheel is arranged on the push plate mechanism and is in sliding contact with the inner wall of the valve body, so that the friction between the push plate mechanism and the inner wall of the valve body is reduced, and the service lives of the valve body and the push plate are prolonged.

The technical scheme adopted for solving the technical problems is as follows: a valve is proposed, comprising: valve body, driving piece, valve rod, double link, push pedal mechanism, case, driving piece, valve rod set up in the upper end of valve body, double link, push pedal mechanism, case set up in the valve body, the driving piece links to each other with the valve rod, the one end of valve rod stretch into in the case with the double link is connected, the double link with push pedal mechanism links to each other, push pedal mechanism with the case is connected, push pedal mechanism's left and right sides all stretches out outside the case and extend to the inner wall department of case, push pedal mechanism is close to the left and right sides of case inner wall is equipped with a plurality of pulleys respectively, on the case inner wall to the pulley is equipped with the slide rail.

Compared with the prior art, the utility model has the advantages that: when the valve is used, the driving piece drives the valve rod to move up and down, and the valve rod moves up and down through the transmission of the double connecting rods and the push plate mechanism, so that the valve core moves up and down, and the valve is opened and closed. According to the utility model, when the double connecting rods move up and down, the double connecting rods drive the push plate mechanism to move up and down, and the sliding wheels on the push plate mechanism slide along the sliding rails on the inner wall of the valve body, so that the push plate mechanism moves up and down more smoothly and stably, the friction between the push plate mechanism and the inner wall of the valve body is reduced, and the service lives of the valve body and the push plate are prolonged.

In the valve, the push plate mechanism comprises a first push rod and a second push rod which are arranged on the upper side and the lower side of the valve core, the first push rod is connected with the double connecting rods, a connecting piece is arranged between the first push rod and the second push rod, the connecting piece is connected with the valve core, and the two ends, close to the inner wall of the valve core, of the first push rod and the second push rod are both connected with the sliding wheel. The push plate mechanism is formed by the first push rod, the second push rod and the connecting piece, so that the structure is light, and the material is saved.

In the valve, the connecting piece comprises connecting rods which are arranged on the first push rod and the second push rod in parallel, and the connecting rods are connected with the valve core. The first push rod and the second push rod which are arranged in parallel enable connection of the first push rod and the second push rod to be more stable.

In one of the above valves, the driving member includes a cylinder and a piston rod, and the piston rod is connected to the valve stem. The valve core is controlled through the air cylinder, so that an air control gate valve is formed, and the stroke control of the push plate mechanism is more stable.

In the valve, the sealing ring is arranged on the outer side of the valve core, and the sealing effect is good.

Drawings

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

fig. 2 is a schematic structural diagram of a second embodiment of the present utility model.

In the figure, 1, a valve body; 2. a valve stem; 3. a double connecting rod; 4. a valve core; 5. a sliding wheel; 6. a first push rod; 7. a second push rod; 8. a connecting rod; 9. a cylinder; 10. a piston rod; 11. and (3) sealing rings.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 and 2, a valve of the present utility model includes: valve body 1, the driving piece, valve rod 2, double link 3, push pedal mechanism, case 4, the driving piece, valve rod 2 sets up in the upper end of valve body 1, double link 3, push pedal mechanism, case 4 set up in valve body 1, the driving piece links to each other with valve rod 2, the one end of valve rod 2 stretches into in the case 4 and is connected with double link 3, double link 3 links to each other with push pedal mechanism, push pedal mechanism is connected with case 4, the left and right sides of push pedal mechanism all stretches out outside case 4 and extends to the inner wall department of case 4, the left and right sides that push pedal mechanism is close to case 4 inner wall is equipped with a plurality of movable pulleys 5 respectively, be equipped with the slide rail to movable pulley 5 on the case 4 inner wall.

Further, the push plate mechanism comprises a first push rod 6 and a second push rod 7 which are arranged on the upper side and the lower side of the valve core 4, the first push rod 6 is connected with the double connecting rods 3, a connecting piece is arranged between the first push rod 6 and the second push rod 7, the connecting piece is connected with the valve core 4, and both ends, close to the inner wall of the valve core 4, of the first push rod 6 and the second push rod 7 are connected with the sliding wheels 5. The push plate mechanism is formed by the first push rod 6, the second push rod 7 and the connecting piece, so that the structure is light, and the material is saved.

Further, the connecting piece comprises a connecting rod 8 which is arranged in parallel on the first push rod 6 and the second push rod 7, and the connecting rod 8 is connected with the valve core 4. The first push rod 6 and the second push rod 7 which are arranged in parallel enable the connection of the first push rod 6 and the second push rod 7 to be more stable.

Further, the driving member comprises a cylinder 9 and a piston rod 10, the piston rod 10 being connected to the valve stem 2. The valve core 4 is controlled through the air cylinder 9 to form a pneumatic control gate valve, so that the stroke control of the push plate mechanism is more stable.

Furthermore, the outside of case 4 is equipped with sealing washer 11, and sealed effectual.

Working principle: when the valve is used, the driving piece drives the valve rod 2 to move up and down, and the up and down movement of the valve rod 2 is realized through the transmission of the double connecting rod 3 and the push plate mechanism, so that the valve core 4 moves up and down, and the opening and closing of the valve are realized. According to the utility model, when the double connecting rods 3 move up and down, the double connecting rods 3 drive the push plate mechanism to move up and down, and the sliding wheels 5 on the push plate mechanism slide along the sliding rails on the inner wall of the valve body 1, so that the push plate mechanism moves up and down more smoothly and stably, friction between the push plate mechanism and the inner wall of the valve body 1 is reduced, and the service lives of the valve body 1 and the push plate are prolonged.

The specific embodiments described herein are offered by way of example only. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the scope of the utility model as defined.

Claims

1. A valve, comprising: valve body (1), driving piece, valve rod (2), double link (3), push pedal mechanism, case (4), driving piece, valve rod (2) set up in the upper end of valve body (1), double link (3), push pedal mechanism, case (4) set up in valve body (1), driving piece links to each other with valve rod (2), the one end of valve rod (2) stretches into in case (4) with double link (3) are connected, double link (3) with push pedal mechanism links to each other, push pedal mechanism with case (4) are connected, its characterized in that, push pedal mechanism's left and right sides all stretches out outside case (4) and extend to the inner wall department of case (4), push pedal mechanism is close to the left and right sides of case (4) inner wall is equipped with a plurality of sliding wheels (5) respectively, on case (4) inner wall to sliding wheel (5) are equipped with the slide rail.

2. A valve according to claim 1, characterized in that the push plate mechanism comprises a first push rod (6) and a second push rod (7) which are arranged on the upper side and the lower side of the valve core (4), the first push rod (6) is connected with the double connecting rods (3), a connecting piece is arranged between the first push rod (6) and the second push rod (7), the connecting piece is connected with the valve core (4), and both ends of the first push rod (6) and the second push rod (7) which are close to the inner wall of the valve core (4) are connected with the sliding wheel (5).

3. A valve according to claim 2, characterized in that the connecting piece comprises a connecting rod (8) arranged in parallel to the first (6) and second (7) push rod pieces, which connecting rod (8) is connected to the valve element (4).

4. A valve according to claim 1, characterized in that the driving member comprises a cylinder (9) and a piston rod (10), the piston rod (10) being connected to the valve stem (2).

5. A valve according to claim 1, characterized in that the outside of the valve core (4) is provided with a sealing ring (11).