Valve terminal structure with high sealing performance

Abstract

The utility model discloses a valve terminal structure with high sealing performance, which comprises an electric appliance box, a valve rod and a pushing assembly used for pushing the valve rod, and side lining seats are fixedly connected to two horizontal sides of the electric appliance box. In the application, in a first state, a first conduction groove and a second conduction groove are respectively arranged between two adjacent groups of lining seats, at the moment, a chamber A, a chamber B and a chamber C are communicated, gas is started to enter, and test gas enters the three chambers; when the first state is switched to the second state, the first conduction groove and the second conduction groove are formed in the cavity B and the cavity C respectively, the three cavities are not communicated, the cavity B is a test cavity connected with a product, at the moment, air pressures of the three cavities are similar, it is guaranteed that sealing pieces on the two sides of the cavity B are evenly stressed, leakage caused by too large pressure is avoided, and the sealing performance of the product is improved. Communication and opening and closing of the three cavities are achieved through the valve rod, and therefore even if the air pressure in the cavities reaches up to 3 MPA, the valve rod can slide easily.

Description

Technical Field

[0001] The utility model relates to the technical field of valve islands, in particular to a valve island structure with high sealing performance. Background Art

[0002] A valve island is a control component composed of multiple electrically controlled valves. It integrates signal input / output and signal control, just like a control island. The main function of the valve island is to control a certain number of valves and their signal processing. For example, pneumatic actuators can be switched by air pressure to achieve control and regulation of the fluid.

[0003] The valve island is the core component of the air tightness tester. The main technology now is to control the switch through a direct-acting solenoid valve, and use aluminum blocks in series or in parallel to connect several direct-acting solenoid valves to achieve actions such as opening, closing, and exhausting the air path. In the specific implementation process, the overall structure of the valve island has a high risk of leakage. Each direct-acting solenoid valve has the risk of leakage. Moreover, because the existing solenoid valve is used, the internal volume of the valve island is very large. When measuring tiny products, the measurement accuracy is not enough. The general solenoid valve has a pressure resistance of 1MPA. When it exceeds 1MPA, a special solenoid valve is basically required. Special solenoid valves generally cannot be integrated and can only be assembled and used with solenoid valves + air pipes. Therefore, it is urgent to propose a corresponding high-sealing valve island structure to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and to propose a valve island structure with high sealing performance.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A highly sealing valve island structure includes an electrical box, a valve stem and a pushing assembly for pushing the valve stem. The electrical box is fixedly connected to side lining seats on both horizontal sides. Three groups of inner lining seats fixed to the inner wall of the electrical box are arranged between the two groups of side lining seats, and the three groups of inner lining seats are arranged horizontally. Chamber A, chamber B and chamber C are respectively opened inside the three groups of inner lining seats. The valve stem is inserted between the two groups of side lining seats and the two groups of inner lining seats, and the outer wall of the valve stem is provided with a conduction assembly for switching the conduction state of chamber A, chamber B and chamber C.

[0007] Preferably, the two groups of side lining seats and the three groups of inner lining seats are all fixedly connected to the inner surface wall of the electrical box with an outer sealing ring.

[0008] Preferably, the two groups of side liner seats and the three groups of inner liner seats are all fixedly connected to the outer wall of the valve stem with an inner sealing ring.

[0009] Preferably, the conducting component includes a first conducting groove and a second conducting groove which are provided on the outer wall of the valve stem.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0011] In this application, in the first state, the first conduction groove and the second conduction groove are respectively placed between adjacent two groups of inner lining seats. At this time, chamber A, chamber B, and chamber C are connected, and air intake starts. The test gas enters the three chambers. When switched to the second state, the first conduction groove and the second conduction groove are respectively placed in chamber B and chamber C, and the three chambers are not connected. Chamber B is the test chamber for connecting the product. At this time, the air pressures in the three chambers are all similar, ensuring that the sealing elements on both sides of chamber B are evenly stressed and will not leak due to excessive pressure. The connection and opening / closing of the three chambers are realized through the valve rod. When the valve rod is at the leftmost side, it is in state one, and at this time, the three chambers are interconnected. When the valve rod is at the rightmost side, it is in state two, and at this time, the three chambers are not connected to each other. Because the connection and closing of the three chambers are related to the left and right positions of the valve rod, even if the air pressure in the chamber is as high as 3 MPA, the valve rod can slide easily. Description of the Drawings

[0012] Figure 1 Shows the overall structural schematic diagram provided by an embodiment of the present utility model;

[0013] Figure 2 Shows the structural schematic diagram of the valve rod provided by an embodiment of the present utility model;

[0014] Figure 3 Shows the structural schematic diagram of the inner lining seat provided by an embodiment of the present utility model;

[0015] Figure 4 Shows the structural schematic diagrams of two states of the valve island provided by an embodiment of the present utility model.

[0016] Legend Explanation:

[0017] 1. Electrical box; 2. Side lining seat; 3. Valve rod; 4. Inner lining seat; 5. Outer sealing ring; 6. Inner sealing ring; 7. First conduction groove; 8. Second conduction groove; 9. Chamber A; 10. Chamber B; 11. Chamber C. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0019] Please refer to Figures 1-4, the present utility model provides a technical solution:

[0020] A valve island structure with high sealing performance, including an electrical box 1, a valve rod 3 and a pushing assembly for pushing the valve rod 3. Both horizontal sides of the electrical box 1 are fixedly connected with side lining seats 2. Between the two groups of side lining seats 2, there are three inner lining seats 4 fixedly connected to the inner wall of the electrical box 1, and the three inner lining seats 4 are arranged horizontally. Chambers A9, B10 and C11 are respectively opened inside the three inner lining seats 4. The valve rod 3 passes through between the two groups of side lining seats 2 and the two groups of inner lining seats 4, and a conduction assembly for switching the conduction states of chambers A9, B10 and C11 is arranged on the outer surface of the valve rod 3;

[0021] In the first state, the first conduction groove 7 and the second conduction groove 8 are respectively placed between two adjacent inner lining seats 4. At this time, chambers A9, B10 and C11 are connected, and air intake starts. The test gas enters the three chambers. When switched to the second state, the first conduction groove 7 and the second conduction groove 8 are respectively placed in chambers B10 and C11. The three chambers are not connected. Chamber B10 is the test chamber connected to the product. At this time, the air pressures in the three chambers are all similar, ensuring that the seals on both sides of chamber B10 are evenly stressed and will not leak due to excessive pressure. The connection and opening / closing of the three chambers are realized through the valve rod 3. When the valve rod 3 is at the leftmost position, it is in state one, and at this time the three chambers are interconnected. When the valve rod 3 is at the rightmost position, it is in state two, and at this time the three chambers are not the same. Because the connection and closing of the three chambers are related to the left and right positions of the valve rod 3, even if the air pressure in the chamber is as high as 3 MPA, the valve rod 3 can slide easily.

[0022] It should be noted that: The power source for pushing the valve rod comes from the outside and adopts the existing technology, which will not be elaborated here.

[0023] Specifically, as Figure 2 shown in Figure 4 , outer sealing rings 5 are fixedly connected between the two groups of side lining seats 2 and the three groups of inner lining seats 4 and the inner wall of the electrical box 1, and inner sealing rings 6 are fixedly connected between the two groups of side lining seats 2 and the three groups of inner lining seats 4 and the outer surface of the valve rod 3. The airtightness between the electrical box 1, the three chambers and the valve rod is ensured through the outer sealing rings 5 and the inner sealing rings 6. The conduction assembly includes the first conduction groove 7 and the second conduction groove 8 opened on the outer surface of the valve rod 3. When the valve rod 3 is at the leftmost position, it is in state one, and at this time the three chambers are interconnected. When the valve rod 3 is at the rightmost position, it is in state two, and at this time the three chambers are not the same. Because of the connection and closing of the three chambers.

[0024] Working principle: In the first state, the first conduction groove 7 and the second conduction groove 8 are respectively placed between two adjacent inner lining seats 4. At this time, the chamber A 9, the chamber B 10 and the chamber C 11 are connected, and air intake starts. The test gas enters the three chambers. When switched to the second state, the first conduction groove 7 and the second conduction groove 8 are respectively placed in the chamber B 10 and the chamber C 11, and the three chambers are not connected. The chamber B 10 is the test chamber connected to the product. At this time, the air pressures in the three chambers are similar, ensuring that the sealing members on both sides of the chamber B 10 are evenly stressed and will not leak due to excessive pressure. The connection and opening / closing of the three chambers are realized through the valve rod 3. When the valve rod 3 is at the leftmost side, it is in the first state, and at this time the three chambers are interconnected. When the valve rod 3 is at the rightmost side, it is in the second state, and at this time the three chambers are not connected to each other. Because the connection and closing of the three chambers are related to the left and right positions of the valve rod 3, even if the air pressure in the chamber is as high as 3 MPA, the valve rod 3 can slide easily.

[0025] The above description of the embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A valve island structure with high sealing performance, comprising an electrical box (1), a valve rod (3) and a pushing assembly for pushing the valve rod (3), characterized in that, Both horizontal sides of the electrical box (1) are fixedly connected with side lining seats (2). Between the two groups of side lining seats (2), there are three groups of inner lining seats (4) fixedly connected to the inner wall of the electrical box (1), and the three groups of inner lining seats (4) are arranged horizontally. Chambers A (9), B (10) and C (11) are respectively formed inside the three groups of inner lining seats (4). The valve rod (3) passes between the two groups of side lining seats (2) and the two groups of inner lining seats (4), and a conduction component for switching the conduction states of chambers A (9), B (10) and C (11) is arranged on the outer surface of the valve rod (3).

2. The high-sealing valve island structure according to claim 1, characterized in that, Outer sealing rings (5) are fixedly connected between the two groups of side lining seats (2) and the inner wall of the electrical box (1), and also between the three groups of inner lining seats (4) and the inner wall of the electrical box (1).

3. The high-sealing valve island structure according to claim 2, characterized in that, Inner sealing rings (6) are fixedly connected between the two groups of side lining seats (2) and the outer surface of the valve rod (3), and also between the three groups of inner lining seats (4) and the outer surface of the valve rod (3).

4. A valve island structure with high sealing performance according to claim 3, characterized in that, The conduction component includes a first conduction groove (7) and a second conduction groove (8) formed on the outer surface of the valve rod (3).

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