CN219317742U

CN219317742U - Pneumatic switch valve

Info

Publication number: CN219317742U
Application number: CN202223233892.9U
Authority: CN
Inventors: 李琯新; 李奇
Original assignee: Wenzhou Lipu Auto Control Equipment Co ltd
Current assignee: Wenzhou Lipu Auto Control Equipment Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-07-07
Anticipated expiration: 2032-12-05

Abstract

The utility model relates to the technical field of switch valves, in particular to a pneumatic switch valve, which comprises a valve body, wherein a pneumatic element is arranged at the top of the inner side of the valve body, a piston is movably connected to the middle part of the valve body, two connectors are respectively arranged at the two sides of the bottom of the valve body, four locking screws are respectively movably connected to the side surfaces of the two connectors, the bottom ends of the four locking screws are movably connected with a fixed plate through bearings, two springs are arranged at the two sides of the top of the fixed plate, sealing rings are fixedly connected to the bottoms of the inner sides of the two connectors, a pipeline is movably connected to one side of each sealing ring, and the improved switch valve has the advantages that the piston is arranged between two sections of pipelines to block circulation, the structure does not need to squeeze the pipeline, the later maintenance cost is reduced, the pipeline is connected with the pneumatic switch valve by using the locking screws, and the quick assembly and disassembly between the pipeline and the valve body are realized.

Description

Pneumatic switch valve

Technical Field

The utility model relates to the technical field of switching valves, in particular to a pneumatic switching valve.

Background

On-off valve, a switch of the valve style, such as a tap, a pressure cooker valve, etc., thus functioning as a shut-off switch.

The switch valve can be divided into a pneumatic switch valve and an electric switch valve according to the structure, the two valve bodies are indistinguishable, the main difference is that the driving force for pushing the sliding block in the valve body to change the valve position is different, and the pneumatic switch valve is sent to the operation cylinder in the valve by the control air in the air path to push the piston to move so as to drive the sliding block to change the valve position of the valve body; the electric switch valve drives the sliding block to change the valve position of the valve body through electromagnetic attraction generated by the spiral coil, and the pneumatic switch valve can push the piston and the sliding block to change the valve position of the valve body after forming certain pressure through air in the cylinder, so that the switch speed is relatively high in actual control, and the pneumatic switch valve can be used in places needing quick flow resistance, which cannot be achieved by the electric switch valve.

The prior patent (publication number: CN 201715022U) discloses a pneumatic switch valve for controlling the opening and closing of a liquid hose of PCB manufacturing equipment, the pneumatic switch valve comprises a valve body and a valve head fixedly connected with the valve body, the hose is arranged on the valve head in a penetrating manner, a pneumatic mechanism capable of opening and closing the hose is arranged in a cavity formed by the valve body and the valve head, and compared with the prior art, the pneumatic switch valve disclosed by the utility model has the advantages that the hose is opened and closed by adopting the pneumatic mechanism, the operation is reliable, the failure rate is low, and the normal opening and closing of the hose are ensured; because the pneumatic mechanism is of a mechanical structure, the acid and alkali corrosion resistance is strong, and the pneumatic mechanism cannot be damaged by acid and alkali corrosion; in addition, because the pneumatic mechanism is a non-electric device, potential safety hazards are not generated. The inventors found that the following problems exist in the prior art in the process of implementing the present utility model: 1. the pneumatic switch valve extrudes the hose in the middle through the extrusion head and the ejector block, so that the material conveying in the hose is blocked, but the extrusion of the hose for a long time can lead to the decrease of the rebound ability of the hose and the great damage to the hose, so that the maintenance cost of the hose in the later period is increased; 2. and traditional pneumatic switch valve need be with fastener and ring flange as the medium when being connected with the pipeline to be connected with pneumatic switch valve, screw into the ring flange with the fastener one by one in, and is very loaded down with trivial details.

Disclosure of Invention

The utility model aims to provide a pneumatic switch valve so as to solve the problem that the traditional pneumatic switch valve has high damage to a hose and high later maintenance cost in the background art; and the problem of being complicated when connecting the pipeline with the pneumatic switch valve. In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a pneumatic switch valve, includes the valve body, the inboard top of valve body is equipped with pneumatic element, the middle part swing joint of valve body has the piston, two joints have been seted up respectively to the bottom both sides of valve body, two the side of joint has four locking screw, four locking screw's bottom has the fixed plate through bearing swing joint, the top both sides of fixed plate are equipped with two springs, two the equal fixedly connected with sealing washer in inboard bottom of joint, one side swing joint of sealing washer has the pipeline, the inboard middle part fixedly connected with two stoppers of valve body.

It is further preferred that the surface of the piston is provided with a sealing layer and that the outer dimension of the piston corresponds to the distance between the two joints.

Further preferably, the fixing plate is of an arc-shaped structure, and the bottom surface of the fixing plate is a sand grinding layer.

Further preferably, an elastic structure is formed between the connector and the fixing plate through a spring.

Further preferably, an annular groove is formed in one side of the sealing ring, and the inner size structure of the annular groove is consistent with the pipe wall size structure of the pipeline.

Further preferably, a limiting structure is formed between the piston and the pneumatic element through a limiting block.

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

according to the utility model, the pipeline is divided into two sections to be connected by arranging the two interfaces at the left side and the right side of the valve body, the pipeline does not need to pass through the pneumatic switch valve entirely, and the two sections of pipelines are communicated and closed by the internal piston when the pipeline needs to be switched on and off.

According to the pneumatic switch valve, the two connectors are arranged on the two sides of the valve body, the connecting locking structure is arranged on the connectors, the fixing plate is abutted against the side face of the pipeline by the locking screw, the surface, which is contacted with the pipeline, of the fixing plate is the frosted surface, so that the pipeline in the connector can be prevented from slipping, the quick assembly and disassembly of the pneumatic switch valve can be realized by only screwing the locking screw, the pneumatic switch valve is very convenient and fast, one end of the pipeline is abutted in the annular groove on one side of the sealing ring, the inner size structure of the annular groove is consistent with the pipe wall size structure, and the sealing effect of the pipeline and the sealing ring is better when the pipeline and the sealing ring are enabled.

Drawings

FIG. 1 is a schematic diagram of a front cross-sectional structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of the utility model at A in FIG. 1;

FIG. 3 is a schematic side cross-sectional view of the joint of the present utility model.

In the figure: 1. a valve body; 2. a pneumatic element; 3. a piston; 4. a joint; 5. locking a screw; 6. a fixing plate; 7. a spring; 8. a seal ring; 9. a pipe; 10. and a limiting block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are obtained by a worker of ordinary skill in the art without creative efforts, are within the protection scope of the present utility model based on the embodiments of the present utility model.

Referring to fig. 1 to 3, the present utility model provides a technical solution: the utility model provides a pneumatic switch valve, including valve body 1, the inboard top of valve body 1 is equipped with pneumatic element 2, the middle part swing joint of valve body 1 has piston 3, two joints 4 have been seted up respectively to the bottom both sides of valve body 1, the side of two joints 4 has four locking screw 5 respectively swing joint, the bottom of four locking screw 5 has fixed plate 6 through bearing swing joint, the top both sides of fixed plate 6 are equipped with two springs 7, the equal fixedly connected with sealing washer 8 of inboard bottom of two joints 4, one side swing joint of sealing washer 8 has pipeline 9, the inboard middle part fixedly connected with two stopper 10 of valve body 1.

In this embodiment, as shown in fig. 1, a sealing layer is provided on the surface of the piston 3, and the outer dimension structure of the piston 3 is consistent with the distance between the two joints 4; so that the piston 3, when moving downwards, is better able to block the communication between the two joints 4.

In this embodiment, as shown in fig. 1 and 2, the fixing plate 6 has an arc structure, and the bottom surface of the fixing plate 6 is a sand layer; can strengthen the frictional force between fixed plate 6 and the pipeline 9, better fix pipeline 9 in joint 4, avoid appearing the condition of skidding.

In this embodiment, as shown in fig. 1 and 2, an elastic structure is formed between the connector 4 and the fixing plate 6 by a spring 7; when the pipe 9 and the valve body 1 need to be disassembled, the spring 7 can automatically separate the fixing plate 6, and the spring 7 can prevent the fixing plate 6 from rotating together when the locking screw 5 is screwed.

In this embodiment, as shown in fig. 2, an annular groove is formed on one side of the sealing ring 8, and the inner dimension structure of the annular groove is consistent with the wall dimension structure of the pipeline 9; the port of the pipeline 9 can be butted into the annular groove, so that the pipeline 9 is connected with the sealing ring 8 more tightly, and the connection air tightness is ensured.

In this embodiment, as shown in fig. 1, a limiting structure is formed between the piston 3 and the pneumatic element 2 through a limiting block 10; preventing the piston 3 from colliding with the pneumatic element 2 too fast during the upward movement, resulting in damage to the pneumatic element 2.

The application method and the advantages of the utility model are as follows: when the pneumatic switch valve is wound, the working process is as follows:

as shown in fig. 1, fig. 2 and fig. 3, the pneumatic switch valve is firstly put horizontally, then two sections of pipelines 9 are respectively inserted into two joints 4 of the valve body 1, the pipe wall of the pipeline 9 enters into an annular groove of the sealing ring 8, then the locking screw 5 is screwed to move towards the inside of the joint 4, the locking screw 5 pushes the fixing plate 6 to be in surface contact with the pipeline 9, the pipeline 9 is fixed in the joint 4, one surface of the fixing plate 6, which is in contact with the pipeline 9, is a frosted surface, the connection between the valve body 1 and the pipeline 9 can be more stable, the pipeline 9 is prevented from rotating or slipping, when the pipeline 9 needs to be disassembled, the locking screw 5 is only required to be screwed towards the outside of the joint 4, the fixing plate 6 is closed towards the inner wall of the joint 4 under the action of the spring 7, then the pipeline 9 can be pulled out, after the two sections of the pipeline 9 and the pneumatic switch valve are connected, the pneumatic element 2 is started to push the piston 3 towards the joint 4 by using the force generated by the pressure or expansion, and the piston 3 is blocked by the sealing layer 4 because the surface of the piston 3 is in the surface, and the outer dimension structure of the piston 3 is consistent with the distance between the two joints 4, so that the two joints 4 can be better pressed against each other, and the two joints 4 can not be sealed, and the service life of the pipeline 9 can be better kept in the joint and the joint can be kept close to the joint between the two joints, and the pipeline has a longer service life.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Pneumatic switching valve, including valve body (1), its characterized in that: the pneumatic valve is characterized in that a pneumatic element (2) is arranged at the top of the inner side of the valve body (1), a piston (3) is movably connected to the middle of the valve body (1), two connectors (4) are respectively arranged at two sides of the bottom of the valve body (1), four locking screws (5) are respectively movably connected to the side faces of the connectors (4), a fixing plate (6) is movably connected to the bottom of each locking screw (5) through a bearing, two springs (7) are arranged at two sides of the top of the fixing plate (6), a sealing ring (8) is fixedly connected to the bottom of the inner side of each connector (4), a pipeline (9) is movably connected to one side of each sealing ring (8), and two limiting blocks (10) are fixedly connected to the middle of the inner side of the valve body (1).

2. A pneumatic switching valve as claimed in claim 1, wherein: the surface of the piston (3) is provided with a sealing layer, and the outer dimension structure of the piston (3) is consistent with the distance between the two joints (4).

3. A pneumatic switching valve as claimed in claim 1, wherein: the fixing plate (6) is of an arc-shaped structure, and the bottom surface of the fixing plate (6) is a sand grinding layer.

4. A pneumatic switching valve as claimed in claim 1, wherein: an elastic structure is formed between the connector (4) and the fixed plate (6) through a spring (7).

5. A pneumatic switching valve as claimed in claim 1, wherein: an annular groove is formed in one side of the sealing ring (8), and the inner size structure of the annular groove is consistent with the pipe wall size structure of the pipeline (9).

6. A pneumatic switching valve as claimed in claim 1, wherein: a limiting structure is formed between the piston (3) and the pneumatic element (2) through a limiting block (10).