A bellows pneumatic diaphragm valve

Abstract

The utility model discloses a corrugated pipe pneumatic diaphragm valve, including diaphragm valve body, the corrugated pipe pneumatic control subassembly is equipped in diaphragm valve body inside, the utility model has made improvement to prior art, in actual use, aiming at the weak point of traditional valve, focus on the improvement of diaphragm. Through the reference to the corrugated pipe structure, the form of diaphragm is changed in the semiconductor neighborhood, and the pain point of traditional diaphragm is solved.

Description

Technical Field

[0001] This utility model relates to the field of bellows pneumatic diaphragm valves, specifically to a bellows pneumatic diaphragm valve. Background Technology

[0002] The valve's seal depends on the diaphragm, and the valve's service life also largely depends on the diaphragm's lifespan.

[0003] In traditional designs, diaphragms, while providing a seal, also need to withstand significant deformation. During this deformation, the diaphragm undergoes bending, which greatly affects its lifespan and can even lead to breakage. Reducing the diaphragm thickness to mitigate the impact of bending results in insufficient pressure resistance. Simultaneously, the diaphragm's stroke length also affects its lifespan; however, an excessively short stroke leads to narrow flow channels, impacting flow rate. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes a bellows pneumatically controlled diaphragm valve to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] A bellows pneumatically controlled diaphragm valve includes a diaphragm valve body, and a bellows pneumatically controlled assembly is provided inside the diaphragm valve body;

[0007] The bellows pneumatic control assembly includes a valve central shaft that slides with a diaphragm valve body. A spring is sleeved around the valve central shaft and connected to the inner wall of the diaphragm valve body. A sealing mounting groove is provided around the valve central shaft, and a sealing O-ring is installed inside the sealing mounting groove. A bellows diaphragm is installed around the valve central shaft.

[0008] Furthermore, an air inlet is provided on one side of the diaphragm valve body.

[0009] Furthermore, a pressure block is installed between the valve shaft and the bellows diaphragm.

[0010] Furthermore, the valve's central shaft mates with the diaphragm valve body via a sealing mounting head.

[0011] Furthermore, drain heads are installed around the central axis of the valve.

[0012] The beneficial effects of this utility model are as follows:

[0013] (1) This utility model improves upon the existing technology. In practical use, it focuses on improving the diaphragm to address the weaknesses of traditional valves. By incorporating a bellows structure, the morphology of the diaphragm is changed in the semiconductor field, solving the pain points of traditional diaphragms.

[0014] (2) The bellows diaphragm has strong extensibility. When the valve shaft is pressed down, the bellows diaphragm unfolds, and the diaphragm is pressed tightly against the valve body to form a sealing surface. When the valve shaft moves up, the bellows is compressed, the flow channel is opened, and the liquid flows through. During this process, the diaphragm remains in its original state with almost no deformation, ensuring the reliability of the seal. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of a bellows pneumatic diaphragm valve according to an embodiment of the present utility model;

[0017] Figure 2 This is a partial structural schematic diagram of a bellows pneumatic diaphragm valve according to an embodiment of the present utility model.

[0018] In the picture:

[0019] 1. Diaphragm valve body; 2. Bellows pneumatic control assembly; 201. Valve central shaft; 202. Spring; 203. Sealing mounting groove; 204. Sealing O-ring; 205. Bellows diaphragm; 3. Air inlet; 4. Pressure block; 5. Sealing mounting head; 6. Drain head; 7. Liquid inlet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] According to an embodiment of the present invention, a bellows pneumatically controlled diaphragm valve is provided, including a diaphragm valve body 1, and a bellows pneumatically controlled assembly 2 is provided inside the diaphragm valve body 1.

[0022] like Figure 1-2As shown, according to an embodiment of the present invention, a bellows pneumatically controlled diaphragm valve includes a bellows pneumatic control assembly 2 comprising a valve central shaft 201, which is slidably fitted with a diaphragm valve body 1. A spring 202 is sleeved around the valve central shaft 201 and connected to the inner wall of the diaphragm valve body 1. A sealing mounting groove 203 is provided around the valve central shaft 201, and a sealing O-ring 204 is installed inside the sealing mounting groove 203. A bellows diaphragm 205 is installed around the valve central shaft 201. An air inlet 3 is provided on one side of the diaphragm valve body 1. A pressure block 4 is installed between the valve central shaft 201 and the bellows diaphragm 205. The valve central shaft 201 is fitted with the diaphragm valve body 1 through a sealing mounting head 5. Drain heads 6 are respectively installed around the valve central shaft 201, and a drain head 6 is provided inside the drain head 6.

[0023] Through the above technical solution, according to Figure 1 The specific embodiment of the bellows-controlled pneumatic diaphragm valve of this utility model is shown. The core structure of the valve consists of a diaphragm valve body 1 and a bellows pneumatic control assembly 2 integrated within it. The core component of the bellows pneumatic control assembly 2 is the valve central shaft 201, which forms a sliding fit with the diaphragm valve body 1 and can move axially. A spring 202 is fitted around the valve central shaft 201. One end of the spring 202 acts on the valve central shaft 201, and the other end is fixedly connected to the inner wall of the diaphragm valve body 1, providing the valve with an initial preload force for closing or opening. To ensure sliding sealing, a sealing mounting groove 203 is machined at a specific peripheral position of the valve central shaft 201, and a sealing O-ring 204 is precisely installed in the groove. The key flexible drive element—the bellows diaphragm 205—is directly installed around the valve central shaft 201, and its edge is usually sealed to the diaphragm valve body 1 or related fixed structures to form a closed pneumatic chamber.

[0024] The bellows diaphragm 205 has strong ductility. When the valve shaft 201 is pressed down, the bellows diaphragm 205 unfolds, and the diaphragm is pressed tightly against the valve body to form a sealing surface. When the valve shaft 201 moves upward, the bellows is compressed, the flow channel is opened, and liquid flows through. Throughout this process, the diaphragm remains in its original state with almost no deformation, ensuring reliable sealing.

[0025] Further implementation details include: an air inlet 3 is provided on one side of the diaphragm valve body 1 for introducing control gas. A pressure block 4 is provided between the bellows diaphragm 205 and the valve shaft 201 to reliably secure and seal the connection. The sliding seal between the valve shaft 201 and the diaphragm valve body 1 is achieved through a specialized sealing head 5, which typically includes bearings or bushings and necessary seals. A drain head 6 is installed at a suitable location on the periphery of the valve shaft 201, typically pointing towards the valve outlet or drain end. This drain head 6 has an internal fluid passage through which the medium flows into the valve.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bellows pneumatic diaphragm valve characterized by, Including diaphragm valve body (1), the corrugated pipe air control assembly (2) is arranged inside the diaphragm valve body (1); The corrugated pipe air control assembly (2) includes a valve shaft (201), which is in sliding fit with the diaphragm valve body (1), a spring (202) is sleeved on the periphery of the valve shaft (201), the spring (202) is connected with the inner wall of the diaphragm valve body (1), a sealing installation groove (203) is formed on the periphery of the valve shaft (201), a sealing O-ring (204) is installed in the sealing installation groove (203), and a corrugated tube diaphragm (205) is installed on the periphery of the valve shaft (201).

2. A bellows pneumatic diaphragm valve according to claim 1, wherein One side of the diaphragm valve body (1) is provided with an air inlet (3).

3. A bellows pneumatic diaphragm valve according to claim 2, wherein, The valve shaft (201) and the corrugated tube diaphragm (205) are provided with a pressing block (4).

4. A bellows pneumatic diaphragm valve according to claim 3, wherein The valve shaft (201) is matched with the diaphragm valve body (1) through a sealing installation head (5).

5. A bellows pneumatic diaphragm valve according to claim 4, wherein The valve shaft (201) is provided with a liquid discharge head (6) on the periphery.

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