Sealing structure for triangular valve

Abstract

The utility model discloses a sealing structure for a triangular valve, which relates to the field of triangular valves, and comprises a valve body, an upper valve cover and a rotating plate, the top of the valve body is sleeved with the upper valve cover, and the inner top wall of the valve body is provided with a valve cover ring groove; a first valve cover gasket is fixedly installed on the outer wall of the upper valve cover, a second valve cover gasket is fixedly installed on the outer wall of the upper valve cover, a sealing ring groove is formed in the inner wall of the upper valve cover, and internal threads are arranged on the inner wall of the top of the upper valve cover. According to the triangular valve, the sealing gasket and the sealing groove are arranged, a medium can be prevented from leaking from the gap when the triangular valve is closed or adjusted, the sealing performance of the triangular valve is improved, the sealing ring and the sealing ring groove are arranged, the sealing performance of the triangular valve can be further improved, and the first valve cover gasket, the second valve cover gasket and the valve cover ring groove are arranged, so that the sealing performance of the triangular valve is improved. The situation of leakage at the joint of the upper valve cover and the valve body can be avoided, the stability of the triangular valve is improved, and deformation and fatigue are prone to occurring.

Description

Technical Field

[0001] This utility model relates to the field of triangular valve technology, specifically a sealing structure for triangular valves. Background Technology

[0002] A three-way valve, also known as a three-way valve, is a common type of valve consisting of a valve body with three outlets. It typically uses a rotating valve core or ball to control the flow of fluid and is mainly installed at the connection point between household water pipes and faucet inlet pipes.

[0003] During the installation and use of existing angle valves, sealing rings are usually used to enhance the sealing performance. However, the sealing rings are compressed for a long time, which reduces their sealing performance and makes them prone to deformation and fatigue. The deformed sealing rings may not be able to fully restore their original shape and elasticity, resulting in gaps between the sealing surfaces and thus reducing the sealing effect.

[0004] To overcome the above-mentioned defects, the prior art (Chinese patent application number: 201922091482.7, application date: 2019.11.27) discloses a double-layer sealing structure for valves. This double-layer sealing structure achieves the sealing of the valve opening and closing port by setting sealing elements at the bottom of the valve core and the top of the valve seat. A sealing slope is formed by setting a ram's horn-shaped first sealing element and a second sealing element with a notch and chamfer, and a sealing plane is formed in contact between the bottom surface of the first sealing element and the top surface of the second sealing element, thus forming a double seal.

[0005] While existing technologies can solve the problem of sealing valves, and although they are designed with a double-sealing structure, they are not suitable for valves operating under high pressure or with highly corrosive media. Therefore, they are limited in their use. Furthermore, if there are defects or incomplete sealing at the mating surfaces between the two seals, leakage paths may still be formed, thereby reducing the valve's sealing performance. In addition, they cannot effectively seal the connection between the upper valve cover and the valve body, leading to leakage at the connection between the upper valve cover and the valve body.

[0006] Therefore, we proposed that the sealing structure for the triangular valve can effectively solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a sealing structure for a triangular valve, in order to solve the problem mentioned in the background art that the sealing structure for a triangular valve currently on the market, although designed as a double sealing structure, is not suitable for valves under high pressure, strong corrosive media, etc., thus limiting its sealing performance. Furthermore, if there are defects or incomplete sealing on the mating surfaces between the two sealing elements, a leakage path may still be formed, thereby reducing the valve's sealing performance. In addition, it cannot effectively seal the connection between the upper valve cover and the valve body, causing leakage at the connection between the upper valve cover and the valve body.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for a triangular valve, comprising a valve body, an upper valve cover, and a rotating plate, wherein the upper valve cover is fitted onto the top of the valve body, and a valve cover groove is formed on the inner top wall of the valve body;

[0009] It also includes: a first valve cover gasket is fixedly installed on the outer wall of the upper valve cover, a second valve cover gasket is fixedly installed on the outer wall of the upper valve cover, a sealing ring groove is opened on the inner wall of the upper valve cover, an internal thread is provided on the inner wall of the top of the upper valve cover, and a sealing groove is opened on the top of the upper valve cover.

[0010] A valve stem is fixedly connected to the bottom of the rotating plate, and its end passes through the valve body. A hexagonal nut is fitted on the outer wall of the valve stem. A sealing gasket is fixedly installed at the bottom of the hexagonal nut, and the end of the sealing gasket passes through the sealing groove. An external thread is provided on the outer wall of the valve stem below the hexagonal nut.

[0011] As a preferred technical solution of this application, a connecting rod is fixedly installed at the bottom of the valve stem, a sealing ring is sleeved on the outer wall of the connecting rod, and the outer wall of the sealing ring penetrates the sealing ring groove. A valve core rod is fixedly connected to the bottom of the connecting rod, a valve seat is fixedly installed at the bottom of the valve core rod, and a spring is sleeved on the outer wall of the valve core rod.

[0012] As a preferred technical solution of this application, the sealing ring includes a wear-resistant layer and a reinforcing core. The reinforcing core is made of hydrogenated nitrile rubber. The sealing ring is composed of a wear-resistant layer and a reinforcing core made of hydrogenated nitrile rubber, which has good corrosion resistance and elasticity, and can maintain stable sealing performance during long-term use, and is not easy to age or deform.

[0013] As a preferred technical solution of this application, the first valve cover gasket and the second valve cover gasket are matched with the valve cover ring groove. Both the first valve cover gasket and the second valve cover gasket are made of silicone rubber. The first valve cover gasket and the second valve cover gasket installed on the upper valve cover are snapped into the valve cover ring groove, thereby forming a sealing barrier to prevent leakage at the connection between the upper valve cover and the valve body.

[0014] As a preferred technical solution of this application, the sealing ring groove and the sealing ring are matched, and the sealing ring groove is set as a stepped groove. The sealing ring groove and the upper valve cover are integrally set. By the sealing ring being inserted into the sealing ring groove, a tight sealing barrier can be formed between the valve stem and the valve seat, further preventing the medium from leaking out from the gap.

[0015] As a preferred technical solution of this application, the external thread and the internal thread are threadedly connected, and the internal thread and the sealing ring groove are connected. The external thread and the internal thread connected to the valve stem are rotated by the rotating plate, thereby moving the valve stem connected to the rotating plate downward.

[0016] As a preferred technical solution of this application, the two ends of the spring are tightly fitted with the valve seat and the upper valve cover, and the upper valve cover is spliced ​​with the valve body. The spring is stretched during the movement of the valve seat driven by the valve stem, so that the tension of the spring can ensure that the sealing element always maintains sufficient pressure to resist the action of the medium pressure, thereby maintaining the sealing performance of the triangular valve.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This triangular valve uses a sealing structure with sealing gaskets and sealing grooves to prevent media leakage from the gap when the valve is closed or adjusted, thus increasing the valve's sealing performance. The addition of sealing rings and sealing ring grooves further enhances the sealing performance. Furthermore, the inclusion of a first valve cover gasket, a second valve cover gasket, and a valve cover ring groove prevents leakage at the connection between the upper valve cover and the valve body, improving the valve's stability. Details are as follows:

[0019] 1. A sealing gasket and sealing groove are provided. The valve stem connected by the rotating plate drives the sealing gasket installed by the hexagonal nut to be inserted into the sealing groove, which ensures that the gap between the valve stem and the upper valve cover is effectively filled, thereby preventing the medium from leaking out of the gap when the triangular valve is closed or adjusted, thus increasing the sealing performance of the triangular valve.

[0020] Furthermore, a sealing ring and a sealing ring groove are provided. By having the sealing ring snap into the sealing ring groove, a tight sealing barrier can be formed between the valve stem and the valve seat, further preventing the medium from leaking out of the gap.

[0021] Furthermore, a spring is incorporated. As the valve stem moves the valve seat, the spring is stretched, ensuring that the seal maintains sufficient pressure to resist the pressure of the medium, thus preserving the sealing performance of the triangular valve.

[0022] 2. A first valve cover gasket, a second valve cover gasket, and a valve cover ring groove are provided. The first and second valve cover gaskets installed on the upper valve cover are inserted into the valve cover ring groove, thereby forming a sealing barrier to prevent leakage at the connection between the upper valve cover and the valve body and improve the stability of the triangular valve.

[0023] Furthermore, a first valve cover gasket and a second valve cover gasket are provided. The first valve cover gasket and the second valve cover gasket have excellent sealing performance, good temperature resistance, weather resistance, chemical corrosion resistance, high elasticity and resilience, and are environmentally friendly and non-toxic, which improves the durable sealing of the three-way valve after splicing. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 3 This is a partial cross-sectional structural diagram of the valve body of this utility model;

[0027] Figure 4 This is a partial cross-sectional structural diagram of the upper valve cover of this utility model;

[0028] Figure 5 This is a partial structural diagram of the rotating plate and valve stem of this utility model;

[0029] Figure 6 This is a partial cross-sectional structural diagram of the sealing ring of this utility model;

[0030] Figure 7 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0031] In the diagram: 1. Valve body; 2. Upper valve cover; 3. Rotating plate; 4. Valve cover ring groove; 5. First valve cover gasket; 6. Second valve cover gasket; 7. Sealing ring groove; 8. Internal thread; 9. Sealing groove; 10. Hexagonal nut; 11. Sealing gasket; 12. Valve stem; 13. External thread; 14. Connecting rod; 15. Sealing ring; 16. Wear-resistant layer; 17. Reinforcing core; 18. Valve core rod; 19. Valve seat; 20. Spring. Detailed Implementation

[0032] 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.

[0033] Please see Figures 1-7 The present invention provides the following technical solution:

[0034] Example 1: To address the issue that a certain type of sealing structure for triangular valves on the market, although designed as a double-sealing structure, is unsuitable for valves operating under high pressure or with highly corrosive media, thus limiting its sealing performance, and that if there are defects or incomplete seals at the mating surfaces between the two seals, leakage paths may still form, thereby reducing the valve's sealing performance, please refer to the attached... Figure 1 -Appendix Figure 2 , Attachment Figure 4 -Appendix Figure 7A valve stem 12 is fixedly connected to the bottom of the rotating plate 3, and its end penetrates the valve body 1. A hexagonal nut 10 is fitted on the outer wall of the valve stem 12. A sealing gasket 11 is fixedly installed at the bottom of the hexagonal nut 10, and the end of the sealing gasket 11 penetrates the sealing groove 9. An external thread 13 is provided on the outer wall of the valve stem 12 below the hexagonal nut 10. A connecting rod 14 is fixedly installed at the bottom of the valve stem 12. A sealing ring 15 is fitted on the outer wall of the connecting rod 14, and the outer wall of the sealing ring 15 penetrates the sealing ring groove 7. A valve core rod 18 is fixedly connected to the bottom of the connecting rod 14. A valve seat 19 is fixedly installed at the bottom of the valve core rod 18. A spring 20 is fitted on the outer wall of the valve core rod 18. The sealing ring 15 includes a wear-resistant layer 16 and a reinforcing core 17, which is made of hydrogenated nitrile rubber. The sealing ring groove 7 and the sealing ring 15 are matched, and the sealing ring groove 7 is a stepped groove. The sealing ring groove 7 and the upper valve cover 2 are integrally formed. The external thread 13 and the internal thread 8 are connected by a thread, and the internal thread 8 is connected to the sealing ring groove 7. The two ends of the spring 20 are tightly fitted to the valve seat 19 and the upper valve cover 2, and the upper valve cover 2 is spliced ​​to the valve body 1.

[0035] By rotating the rotating plate 3, the external thread 13 and internal thread 8 of the valve stem 12 are rotated, causing the valve stem 12 connected to the rotating plate 3 to move downwards. This allows the valve stem 12 to drive the sealing gasket 11 installed on the hexagonal nut 10 into the sealing groove 9, ensuring that the gap between the valve stem 12 and the upper valve cover 2 is effectively filled. This prevents the medium from leaking out of the gap when the triangular valve is closed or adjusted, thereby increasing the sealing performance of the triangular valve. During the movement of the valve stem 12, the three sealing rings 15 connected to the connecting rod 14 are also moved downwards, causing the sealing rings 15 to engage in the sealing ring groove 7, thus ensuring the sealing performance between the valve stem 12 and the valve cover 2. A tight sealing barrier is formed between the seats 19 to further prevent the medium from leaking out of the gap. The sealing ring 15 is composed of a wear-resistant layer 16 and a reinforcing core 17 made of hydrogenated nitrile rubber, which has good corrosion resistance and elasticity. It can maintain stable sealing performance during long-term use and is not easy to age or deform, thereby extending the service life of the valve and further improving the sealing performance of the triangular valve. At the same time, the valve stem 12 moves the valve seat 19, which stretches the spring 20. The tension of the spring 20 can ensure that the sealing element always maintains sufficient pressure to resist the action of the medium pressure, thereby maintaining the sealing performance of the triangular valve.

[0036] Example 2: A durable seal can be achieved for the spliced ​​angle valve; see attached diagram. Figure 1 -Appendix Figure 4The valve body includes a valve body 1, an upper valve cover 2, and a rotating plate 3. The upper valve cover 2 is fitted onto the top of the valve body 1, and a valve cover ring groove 4 is formed on the inner top wall of the valve body 1. The valve body also includes a first valve cover gasket 5 fixedly installed on the outer wall of the upper valve cover 2, a second valve cover gasket 6 fixedly installed on the outer wall of the upper valve cover 2, a sealing ring groove 7 formed on the inner wall of the upper valve cover 2, an internal thread 8 formed on the inner wall of the top of the upper valve cover 2, and a sealing groove 9 formed on the top of the upper valve cover 2. The first valve cover gasket 5 and the second valve cover gasket 6 are matched with the valve cover ring groove 4, and both the first valve cover gasket 5 and the second valve cover gasket 6 are made of silicone rubber.

[0037] The upper valve cover 2 is installed inside the valve body 1, so that the first valve cover gasket 5 and the second valve cover gasket 6 installed on the upper valve cover 2 are engaged in the valve cover ring groove 4, thereby forming a sealing barrier to prevent leakage at the connection between the upper valve cover 2 and the valve body 1, and improving the stability of the triangular valve. The first valve cover gasket 5 and the second valve cover gasket 6 are made of silicone rubber, which has excellent sealing performance, good temperature resistance, weather resistance, chemical corrosion resistance, high elasticity and resilience, and environmental protection and non-toxicity, thereby improving the durable sealing of the triangular valve after splicing.

[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sealing structure for a triangular valve, comprising a valve body (1), an upper valve cover (2) and a rotating plate (3), wherein the upper valve cover (2) is fitted on the top of the valve body (1), and a valve cover groove (4) is formed on the inner top wall of the valve body (1); Its features are, Also includes: The outer wall of the upper valve cover (2) is fixedly installed with a first valve cover gasket (5), the outer wall of the upper valve cover (2) is fixedly installed with a second valve cover gasket (6), the inner wall of the upper valve cover (2) is provided with a sealing ring groove (7), the inner wall of the top of the upper valve cover (2) is provided with an internal thread (8), and the top of the upper valve cover (2) is provided with a sealing groove (9). The bottom of the rotating plate (3) is fixedly connected to a valve stem (12), and the end of the valve stem (1) passes through the valve body (1). The outer wall of the valve stem (12) is fitted with a hexagonal nut (10). The bottom of the hexagonal nut (10) is fixedly installed with a sealing gasket (11), and the end of the sealing gasket (11) passes through the sealing groove (9). The outer wall of the valve stem (12) is provided with an external thread (13) below the hexagonal nut (10).

2. The sealing structure for a triangular valve according to claim 1, characterized in that: A connecting rod (14) is fixedly installed at the bottom of the valve stem (12). A sealing ring (15) is sleeved on the outer wall of the connecting rod (14), and the outer wall of the sealing ring (15) passes through the sealing ring groove (7). A valve core rod (18) is fixedly connected to the bottom of the connecting rod (14). A valve seat (19) is fixedly installed at the bottom of the valve core rod (18). A spring (20) is sleeved on the outer wall of the valve core rod (18).

3. The sealing structure for a triangular valve according to claim 2, characterized in that: The sealing ring (15) includes a wear-resistant layer (16) and a reinforcing core (17), the reinforcing core (17) being made of hydrogenated nitrile rubber.

4. The sealing structure for a triangular valve according to claim 1, characterized in that: The first valve cover gasket (5) and the second valve cover gasket (6) are matched with the valve cover groove (4). Both the first valve cover gasket (5) and the second valve cover gasket (6) are made of silicone rubber.

5. A sealing structure for a triangular valve according to claim 2, characterized in that: The sealing ring groove (7) and the sealing ring (15) are matched, and the sealing ring groove (7) is set as a stepped groove. The sealing ring groove (7) and the upper valve cover (2) are integrated.

6. The sealing structure for a triangular valve according to claim 1, characterized in that: The external thread (13) and the internal thread (8) are connected by a thread, and the internal thread (8) and the sealing ring groove (7) are connected.

7. A sealing structure for a triangular valve according to claim 2, characterized in that: The two ends of the spring (20) are tightly fitted with the valve seat (19) and the upper valve cover (2), and the upper valve cover (2) is spliced ​​with the valve body (1).

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