Butterfly valve with high sealing performance in high-temperature environment

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a butterfly valve with high sealing performance in a high-temperature environment, which solves the problem of poorer sealing effect of the butterfly valve in the high-temperature environment, and comprises a butterfly valve shell, a sealing component is arranged in the butterfly valve shell, and when the valve is closed, the sealing component is arranged in the butterfly valve shell. The sealing effect is achieved by attaching the sealing groove to the valve seat and attaching the sealing gasket A to the sealing groove, after attaching, tight clamping of the sealing gasket A is achieved through magnetic attraction of an arc-shaped magnetic plate and a magnetic strip, the attaching effect of the sealing gasket A and the sealing gasket B is enhanced through arrangement of the sealing gasket B and side lines, and the sealing effect of the sealing gasket A and the sealing gasket B is improved. When the sealing performance of one group of sealing gaskets is reduced due to expansion and deformation caused by high temperature, the other group of sealing gaskets can still play a role in sealing, and finally the purpose of guaranteeing the sealing effect in a high-temperature environment is achieved.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically a high-sealing butterfly valve for high-temperature environments. Background Technology

[0002] In the industrial field, butterfly valves are widely used. However, traditional butterfly valves have shortcomings in sealing performance. For example, under high temperature, high pressure, or strong corrosive conditions, single sealing gaskets are prone to failure due to thermal expansion and contraction and media erosion, leading to leakage. This not only wastes resources but may also cause safety accidents and environmental pollution. To overcome these problems and meet increasingly stringent industrial demands, high-sealing butterfly valves have emerged. However, in high-temperature environments, sealing gaskets are prone to wrinkling, which can prevent them from fitting properly and affect the sealing effect.

[0003] To address the aforementioned problems, a high-sealing butterfly valve designed for high-temperature environments is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a high-sealing butterfly valve for high-temperature environments. By using this device, the problem of poor sealing performance of butterfly valves under high-temperature conditions can be solved.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-sealing butterfly valve for high-temperature environments, comprising a butterfly valve body, a rotating groove formed on the inner wall of the butterfly valve body, a valve stem rotatably connected inside the rotating groove, a valve disc fixedly connected to the bottom end of the valve stem, and a sealing component provided on the inner wall of the butterfly valve body;

[0006] The sealing components include a valve seat fixedly connected to the inner wall of the butterfly valve body, a sealing gasket A snapped into one side of the valve seat, a spring rod fixedly connected to the inner wall of the valve seat, an arc-shaped magnetic plate fixedly connected to the inner wall of the spring rod, the arc-shaped magnetic plate fitting against one side of the sealing gasket A, two sets of spring rods are provided, the two sets of spring rods are symmetrically arranged vertically, a sealing groove is opened on one side of the valve disc, the sealing gasket A is correspondingly arranged in the sealing groove, a magnetic strip is provided on the inner wall of the sealing groove, and the arc-shaped magnetic plate and the magnetic strip are magnetically attracted to each other.

[0007] Preferably, a bolt is threaded onto one side of the valve seat, and the bolt passes through the valve seat and the sealing gasket A side.

[0008] Preferably, there are two sets of sealing components, which are symmetrically arranged on the inner wall of the butterfly valve body.

[0009] Preferably, a sealing gasket B is fixedly connected to the inner wall of the sealing groove.

[0010] Preferably, both sealing gasket A and sealing gasket B have side textures on their adjacent sides.

[0011] Preferably, both sealing gasket A and sealing gasket B are components made of polytetrafluoroethylene material.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model proposes a high-sealing butterfly valve for high-temperature environments. Through the design of the sealing components, when the valve is closed, the sealing groove fits into the valve seat, and the sealing gasket A fits into the sealing groove to achieve a sealing effect. After fitting, the magnetic attraction of the arc-shaped magnetic plate and magnetic strip achieves tight clamping of the sealing gasket A. The design of the sealing gasket B and the side texture enhances the fitting effect between the sealing gasket A and the sealing gasket B. When one set of sealing gaskets expands or deforms due to high temperature, resulting in a decrease in sealing performance, the other set can still play a sealing role, ultimately achieving the purpose of ensuring a tight seal in high-temperature environments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram A of the overall structure of the high-sealing butterfly valve for high-temperature environments according to this utility model;

[0015] Figure 2 This is a schematic diagram (B) of the overall structure of the high-sealing butterfly valve for high-temperature environments according to this utility model;

[0016] Figure 3 This is a schematic diagram of the valve disc structure of the high-sealing butterfly valve under high-temperature conditions according to this utility model.

[0017] Figure 4 This is a schematic diagram of the sealing component structure of the high-sealing butterfly valve under high-temperature conditions according to this utility model;

[0018] Figure 5 This is a schematic diagram of the side texture structure of the high-sealing butterfly valve under high-temperature conditions according to this utility model.

[0019] In the diagram: 1. Butterfly valve body; 11. Rotating groove; 12. Valve stem; 2. Valve disc; 21. Sealing groove; 22. Sealing gasket B; 3. Sealing component; 31. Valve seat; 32. Bolt; 33. Spring rod; 34. Arc-shaped magnetic plate; 4. Sealing gasket A; 41. Side texture. 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] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0022] Combination Figure 1 as well as Figure 2 A high-sealing butterfly valve for high-temperature environments includes a butterfly valve body 1, a rotating groove 11 is provided on the inner wall of the butterfly valve body 1, a valve stem 12 is rotatably connected inside the rotating groove 11, a valve disc 2 is fixedly connected to the bottom end of the valve stem 12, and a sealing component 3 is provided on the inner wall of the butterfly valve body 1.

[0023] The present invention will be further described below with reference to the embodiments.

[0024] Combination Figures 1-5 The sealing component 3 includes a valve seat 31 fixedly connected to the inner wall of the butterfly valve housing 1. A sealing gasket A4 is snapped into one side of the valve seat 31. A spring rod 33 is fixedly connected to the inner wall of the valve seat 31. An arc-shaped magnetic plate 34 is fixedly connected to the inner wall of the spring rod 33. The arc-shaped magnetic plate 34 is in contact with one side of the sealing gasket A4. There are two sets of spring rods 33, which are symmetrically arranged vertically. A sealing groove 21 is opened on one side of the valve disc 2. The sealing gasket A4 is correspondingly arranged with the sealing groove 21. A magnetic strip is provided on the inner wall of the sealing groove 21. The arc-shaped magnetic plate 34 is attracted to the magnetic strip. When the butterfly valve is closed, the sealing groove 21 is in contact with the valve seat 31, and the sealing gasket A4 is in contact with the sealing groove 21 to achieve a sealing effect. After contact, the magnetic attraction between the arc-shaped magnetic plate 34 and the magnetic strip is used to tightly clamp the sealing gasket A4 to ensure the sealing effect of the sealing gasket A4 in high-temperature environments. The spring rod 33 is used to support the arc-shaped magnetic plate 34.

[0025] A bolt 32 is threadedly connected to one side of the valve seat 31. The bolt 32 passes through the valve seat 31 and one side of the sealing gasket A4. The sealing gasket A4 is stably fixed by the bolt 32.

[0026] There are two sets of sealing components 3, which are symmetrically arranged on the inner wall of the butterfly valve body 1. The two sets of sealing components 3 are symmetrically arranged to achieve sealing around the valve disc 2.

[0027] A sealing gasket B22 is fixedly connected to the inner wall of the sealing groove 21. The sealing effect is enhanced by the setting of the sealing gasket B22 and the sealing gasket A4. When one set of sealing gaskets expands or deforms due to high temperature, resulting in a decrease in sealing performance, the other set can still play a sealing role.

[0028] Both sealing gasket A4 and sealing gasket B22 have side texture 41 on their adjacent sides. The side texture 41 enhances the adhesion between sealing gasket A4 and sealing gasket B22.

[0029] Both gasket A4 and gasket B22 are components made of polytetrafluoroethylene (PTFE). PTFE itself has good chemical stability and biocompatibility, as well as excellent corrosion resistance, to achieve good sealing performance in high-temperature environments.

[0030] Specifically, through the setting of sealing component 3, when the valve is closed, the sealing groove 21 fits with the valve seat 31, and the sealing gasket A4 fits with the sealing groove 21 to achieve a sealing effect. After fitting, the magnetic attraction of the arc-shaped magnetic plate 34 and the magnetic strip is used to tightly clamp the sealing gasket A4. The setting of sealing gasket B22 and side texture 41 enhances the fitting effect between sealing gasket A4 and sealing gasket B22. When one set of sealing gaskets expands or deforms due to high temperature, resulting in a decrease in sealing performance, the other set can still play a sealing role, ultimately achieving the purpose of ensuring a tight seal in high-temperature environments.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] 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 high-sealing butterfly valve for high-temperature environments, characterized in that: The valve includes a butterfly valve housing, the inner wall of which has a rotating groove, a valve stem is rotatably connected inside the rotating groove, a valve disc is fixedly connected to the bottom end of the valve stem, and a sealing component is provided on the inner wall of the butterfly valve housing. The sealing component includes a valve seat fixedly connected to the inner wall of the butterfly valve housing. A sealing gasket A is snapped into one side of the valve seat. A spring rod is fixedly connected to the inner wall of the valve seat. An arc-shaped magnetic plate is fixedly connected to the inner wall of the spring rod. The arc-shaped magnetic plate is in contact with one side of the sealing gasket A. There are two sets of spring rods, which are symmetrically arranged vertically. A sealing groove is opened on one side of the valve disc. The sealing gasket A is correspondingly arranged in the sealing groove. A magnetic strip is provided on the inner wall of the sealing groove. The arc-shaped magnetic plate and the magnetic strip are magnetically attracted to each other.

2. The high-sealing butterfly valve for high-temperature environments according to claim 1, characterized in that: A bolt is threaded onto one side of the valve seat, and the bolt passes through the valve seat and one side of the sealing gasket A.

3. The high-sealing butterfly valve for high-temperature environments according to claim 1, characterized in that: The sealing components are provided in two sets, and the two sets of sealing components are symmetrically arranged on the inner wall of the butterfly valve body.

4. The high-sealing butterfly valve for high-temperature environments according to claim 1, characterized in that: A sealing gasket B is fixedly connected to the inner wall of the sealing groove.

5. The high-sealing butterfly valve for high-temperature environments according to claim 4, characterized in that: Both sealing gasket A and sealing gasket B have side textures on their adjacent sides.

6. The high-sealing butterfly valve for high-temperature environments according to claim 5, characterized in that: Both the sealing gasket A and the sealing gasket B are components made of polytetrafluoroethylene material.

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