Sealing gasket of multi-way valve

Abstract

The sealing gasket of the multi-way valve comprises a first gasket body, a second gasket body and a third gasket body, the second gasket body and the third gasket body are sequentially arranged on the inner side of the first gasket body in the radial direction of the first gasket body, and a first connecting strip connected with the second gasket body is arranged on the inner wall of the first gasket body. A second connecting strip is connected between the second gasket and the third gasket; convex ribs are arranged on the upper surfaces of the first gasket and the first connecting strip, and the upper surfaces of the second gasket and the third gasket are planes; due to the fact that the sealing face with the convex ribs and the sealing face with the flat upper surface are arranged at the same time, close contact with the double valve elements can be formed at the same time, the good sealing effect is achieved, the situation that a traditional sealing face with the convex ribs or a plane sealing face is adopted is avoided, and only a valve body with a single valve element is suitable for. The multi-channel water valve has fewer functions compared with the multi-channel water valve suitable for the multi-channel water valve, and the multi-channel water valve is simple in structure and easy to use.

Description

Technical Field

[0001] This utility model specifically relates to a sealing gasket for a multi-way valve. Background Technology

[0002] A multi-way valve is a valve with multiple inlets and outlets, typically used in piping systems to control the direction and flow rate of fluid between multiple pipes or devices. It has wide applications in industrial automation, chemical engineering, pharmaceuticals, food processing, and other fields.

[0003] Existing piping systems mostly use single-core disc valves, with internal leakage seals consisting of only one flow channel opening. The seals are either semi-circular ribbed sealing surfaces or fan-shaped flat sealing surfaces. When replacing the piping system with a more functional dual-core multi-way valve, the existing internal leakage seals are not suitable for effectively sealing the dual valve cores. Therefore, we propose a sealing gasket for multi-way valves. Utility Model Content

[0004] The purpose of this invention is to provide a sealing gasket for a multi-way valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing gasket for a multi-way valve, comprising:

[0006] A first washer, a second washer, and a third washer are arranged sequentially along the radial direction of the first washer inside the first washer. The inner wall of the first washer has a first connecting strip that connects to the second washer, and the second washer and the third washer have a second connecting strip connecting them.

[0007] The first washer and the first connecting strip both have raised ribs on their upper surfaces, while the second washer and the third washer have flat upper surfaces.

[0008] Preferably, multiple first connecting strips are arranged along the circumference of the first washer, and a first flow channel is formed between every two first connecting strips.

[0009] Preferably, multiple second connecting strips are evenly distributed along the inner wall of the second washer, and a second flow channel is provided between every two second connecting strips.

[0010] Preferably, the first washer, the second washer, the third washer, and the first connecting strip are integrally formed.

[0011] Preferably, the lower surface of the first washer has a chamfer.

[0012] Preferably, the first washer, the second washer, and the third washer are made of PTFE.

[0013] Preferably, the upper surface of the first washer has an EPDM layer.

[0014] Preferably, a positioning groove for positioning is formed on the lower surface of the second washer.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention, by simultaneously providing a sealing surface with raised ribs and a flat upper surface, can simultaneously form a tight contact with the dual valve cores, resulting in a good sealing effect. This avoids the limitations of traditional sealing surfaces with raised ribs or flat surfaces, which are only applicable to valve bodies with single valve cores. Multi-channel water valves have fewer functions than the multi-channel water valves applicable to this invention. This invention has a simple structure, can make good tight contact with the lower surface of the dual valve cores, achieves a good sealing effect, is easy to use, and increases the practicality of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the positioning groove structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the sealing gasket of this utility model being installed on a dual-core multi-way valve.

[0021] In the figure: 1. First washer; 2. Second washer; 3. Third washer; 4. First connecting strip; 5. First flow channel; 6. Second flow channel; 7. Positioning groove; 101. Raised rib. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-4 This utility model provides a technical solution: a sealing gasket for a multi-way valve, comprising:

[0024] The first washer 1, the second washer 2, and the third washer 3 are arranged in sequence along the radial direction of the first washer 1 inside the first washer 1, and the inner wall of the first washer 1 has a first connecting strip 4 that connects to the second washer 2, and there is a second connecting strip between the second washer 2 and the third washer 3.

[0025] It facilitates the formation of multiple flow channels, thus adapting to multi-way valves with dual valve cores.

[0026] The first washer 1 and the first connecting strip 4 both have raised ribs 101 on their upper surfaces, while the second washer 2 and the third washer 3 have flat surfaces on their upper surfaces.

[0027] The raised rib 101 facilitates close contact with the outer valve core in the dual valve core, achieving a good contact seal and reducing wear on the contact surface. The flat sealing surface simultaneously contacts the inner and outer valve cores of the dual valve core to achieve a good contact area and thus a seal.

[0028] Preferably, a plurality of first connecting strips 4 are arranged circumferentially along the first washer 1, and a first flow channel 5 is formed between every two first connecting strips 4.

[0029] This facilitates the operation of one of the valve cores in a dual-core multi-way valve.

[0030] Preferably, multiple second connecting strips are evenly distributed along the inner wall of the second washer 2, and a second flow channel 6 is provided between every two second connecting strips.

[0031] This facilitates the connection of the other valve core in a dual-core multi-way valve.

[0032] Preferably, the first washer 1, the second washer 2, the third washer 3 and the first connecting strip 4 are integrally formed.

[0033] It is easy to manufacture and improves connection strength.

[0034] Preferably, the lower surface of the first washer 1 has a chamfer.

[0035] This facilitates better assembly into the inner side of the dual-core multi-way valve.

[0036] Preferably, the first washer 1, the second washer 2, and the third washer 3 are made of PTFE.

[0037] PTFE, or polytetrafluoroethylene, is used to improve the strength and abrasion resistance of gaskets.

[0038] Preferably, the upper surface of the first washer 1 has an EPDM layer.

[0039] EPDM is a type of ethylene propylene diene monomer rubber, which helps to improve the chemical corrosion resistance and stability of gaskets.

[0040] Preferably, a positioning groove 7 for positioning is formed on the lower surface of the second washer 2.

[0041] This facilitates limiting the rotation and movement of the sealing gasket after assembly, thereby improving the stability after installation.

[0042] The working principle and usage process of this utility model are as follows: Figure 4 As shown, the valve body 8 has an outer valve core 9 on its inner side, and an inner valve core 10 is assembled at the lower end of the inner side of the outer valve core 9. When the sealing gasket of this utility model is installed on the inner side of the valve body 8, the sealing gasket is placed on the valve seat 11 on the inner side of the valve body 8. At this time, the first gasket 1 of the sealing gasket contacts the outer valve core 9. Through the rib 101 on the first gasket 1, it can make good tight contact with the outer valve core 9 to achieve a seal. The upper surfaces of the second gasket 2 and the third gasket 3 are both flat. At this time, the third gasket 3 makes tight contact with the arc surface at the lower end of the inner valve core 10 to achieve a seal. At the same time, the second gasket 2 contacts the lower end of the outer valve core 9 and the inner valve core 10 to achieve a seal. This avoids the traditional sealing surface that is only a sealing surface with ribs or a flat sealing surface, which cannot make good tight contact with the outer valve core 9 and the inner valve core 10 with different shapes, resulting in poor sealing effect.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A seal for a multi-port valve, characterized by, include: A first washer (1), a second washer (2), and a third washer (3) are arranged in a radial direction along the inner side of the first washer (1). The inner wall of the first washer (1) has a first connecting strip (4) that connects to the second washer (2). The second washer (2) and the third washer (3) have a second connecting strip connecting them. The first washer (1) and the first connecting strip (4) have raised ribs (101) on their upper surfaces, while the second washer (2) and the third washer (3) have flat surfaces on their upper surfaces.

2. A seal for a multi-port valve according to claim 1, wherein: The first connecting strip (4) is provided in multiple ways along the circumference of the first washer (1), and a first flow channel (5) is formed between every two first connecting strips (4).

3. A seal for a multi-port valve according to claim 1, wherein: The second connecting strips are evenly distributed along the inner wall of the second washer (2), and there is a second flow channel (6) between every two second connecting strips.

4. A seal for a multi-port valve according to claim 1, wherein: The first washer (1), the second washer (2), the third washer (3) and the first connecting strip (4) are integrally formed.

5. A seal for a multi-port valve according to claim 1, wherein: The lower surface of the first washer (1) has a chamfer.

6. The sealing gasket of a multi-way valve according to claim 1, characterized in that: The first washer (1), the second washer (2) and the third washer (3) are made of PTFE.

7. A seal for a multi-port valve according to claim 6, wherein: The upper surface of the first gasket (1) has an EPDM layer.

8. A seal for a multi-port valve according to claim 1, wherein: The lower surface of the second washer (2) has a positioning groove (7) for positioning.

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