A quick core-pulling ultra-low temperature bellows valve

Abstract

The utility model relates to the technical field of pipe valve discloses a kind of quick core-pulling ultra-low temperature bellows valve, including valve body, the valve body is equipped with valve cover, the valve body is threadedly connected with valve seat, the valve body is equipped with valve stem assembly, the valve cover is equipped with packing assembly, the valve cover is equipped with guide sleeve, the valve cover is equipped with round nut one, the valve body is equipped with bellows assembly, one end of the valve stem assembly is equipped with valve core, the valve core is equipped with sealing ring, in the utility model, V type PTFE packing is used to seal between valve stem assembly and valve cover, and it is guided by packing assembly and guide sleeve, ensure the sealing property and stability of valve stem assembly when reciprocating on straight line, can effectively prevent medium leakage, ensure the sealing performance of valve under high pressure, corrosive and other harsh conditions, extend the service life of valve, reduce the security risk and maintenance cost caused by leakage simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of pipe and valve technology, and in particular to a rapid core-pulling cryogenic bellows valve. Background Technology

[0002] In the design of bellows valves, the main structure adopted is a separate structure of valve body and valve cover. Such bellows valves are usually assembled from multiple parts such as valve body, valve cover, valve seat, valve core and valve stem assembly, packing assembly and packing gland, and the structure is relatively complex.

[0003] However, in practical applications, traditional pipe valve operation is not convenient enough, especially when quick core removal is required for maintenance or replacement, the operation process is cumbersome and time-consuming. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rapid core-pulling cryogenic bellows valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rapid core-pulling cryogenic bellows valve, comprising a valve body, a valve cover on the valve body, a valve seat threadedly connected to the valve body, a valve stem assembly inside the valve body, a packing assembly inside the valve cover, a guide sleeve inside the valve cover, a round nut on the valve cover, a toothed gasket at one end of the valve cover, a bellows assembly inside the valve body, a valve core at one end of the valve stem assembly, and a sealing ring on the valve core.

[0006] As a further description of the above technical solution: one end of the valve body is provided with an inlet, the other end of the valve body is provided with an outlet, and the channel inside the valve body is streamlined cylindrical.

[0007] As a further description of the above technical solution: the valve cover and the valve body are connected by studs and nuts.

[0008] As a further description of the above technical solution: the material of the filler assembly is V-type PTFT.

[0009] As a further description of the above technical solution: the valve body is composed of a valve body forging and a stainless steel tube.

[0010] As a further description of the above technical solution: the toothed gasket is located at the connection between the valve body and the valve cover.

[0011] This utility model has the following beneficial effects:

[0012] 1. In this utility model, the valve stem assembly and the valve cover are sealed by V-type PTFE packing, and guided by the packing assembly and guide sleeve, which ensures the sealing performance and stability of the valve stem assembly when it moves back and forth in a straight line. This can effectively prevent media leakage, ensure the sealing performance of the valve under harsh conditions such as high pressure and corrosiveness, extend the service life of the valve, and reduce safety hazards and maintenance costs caused by leakage.

[0013] 2. In this utility model, the valve seat and valve body are connected by a thread, which facilitates the installation and disassembly of the valve seat. The valve cover is equipped with a round nut at the top, which facilitates the connection with the actuator. The overall structure is simple and has few vulnerable parts, which makes the installation and disassembly of this device more convenient and quick, and reduces the difficulty and cost of maintenance and repair. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a rapid core-pulling cryogenic bellows valve proposed in this utility model;

[0015] Figure 2 A partial structural diagram of a rapid core-pulling cryogenic bellows valve proposed in this utility model. Figure 1 ;

[0016] Figure 3 A partial structural diagram of a rapid core-pulling cryogenic bellows valve proposed in this utility model. Figure 2 ;

[0017] Figure 4 A partial structural diagram of a rapid core-pulling cryogenic bellows valve proposed in this utility model. Figure 3 .

[0018] Legend:

[0019] 1. Valve body; 2. Valve seat; 3. Valve core; 4. Bellows assembly; 5. Toothed gasket; 6. Valve cover; 7. Packing assembly; 8. Round nut; 9. Guide sleeve; 10. Sealing ring; 11. Valve stem assembly. 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] Reference Figures 1-4This utility model provides an embodiment of a rapid core-pulling cryogenic bellows valve, comprising a valve body 1, a valve cover 6 on the valve body 1, a valve seat 2 threadedly connected to the valve body 1, a valve stem assembly 11 inside the valve body 1, a packing assembly 7 inside the valve cover 6, a guide sleeve 9 inside the valve cover 6, a round nut 8 on the valve cover 6, a toothed gasket 5 at one end of the valve cover 6, a bellows assembly 4 inside the valve body 1, a valve core 3 at one end of the valve stem assembly 11, and a sealing ring 10 on the valve core 3. The valve stem assembly 11 and the valve cover 6 are sealed using V-type PTFE packing, and guided by the packing assembly 7 and the guide sleeve 9, ensuring the sealing performance and stability of the valve stem assembly 11 during linear reciprocating movement. This effectively prevents media leakage, ensures the valve's sealing performance under harsh conditions such as high pressure and corrosiveness, extends the valve's service life, and reduces safety hazards and maintenance costs caused by leakage.

[0022] One end of the valve body 1 has an inlet, and the other end has an outlet. The channel inside the valve body 1 is streamlined cylindrical. The valve cover 6 is connected to the valve body 1 by studs and nuts. The packing assembly 7 is made of V-type PTFT. The valve body 1 is composed of a valve body 1 forging and a stainless steel tube. The toothed gasket 5 is located at the connection between the valve body 1 and the valve cover 6. The valve seat 2 is connected to the valve body 1 by a thread, which facilitates the installation and disassembly of the valve seat 2. The upper end of the valve cover 6 is equipped with a round nut, which facilitates the connection with the actuator. The overall structure is simple and has few vulnerable parts, making the installation and disassembly of this device more convenient and quick, and reducing the difficulty and cost of maintenance and repair.

[0023] Working Principle: The valve body forging and stainless steel pipe are welded together to form an integrated structure. The valve seat 2 and valve body 1 are connected by a threaded connection, which facilitates the installation and disassembly of the valve seat 2 and is beneficial for subsequent maintenance and repair. At the same time, the valve stem assembly 11 is located inside the valve body 1 and is guided by the packing assembly 7 and guide sleeve 9 to move linearly up and down. The valve stem assembly 11 and valve cover 6 are sealed with V-type PTFT packing to ensure the valve's sealing performance. The upper end of the valve cover 6 is equipped with a round nut 8 for connection with the actuator. When the actuator receives an air source or signal, it can drive the valve stem assembly 11 and valve core 3 to move linearly up and down, thereby controlling the flow of the medium. This device is suitable for three-way diversion control in industries such as petroleum, chemical, and shipbuilding. It has the advantages of advanced and reasonable structure, good adjustment performance, tight closure, erosion resistance, and long service life. At the same time, it is easy to install and disassemble, has few vulnerable parts, and is simple to maintain.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 rapid core-pulling cryogenic bellows valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a valve cover (6), and a valve seat (2) is threadedly connected to the valve body (1). The valve body (1) is provided with a valve stem assembly (11). The valve cover (6) is provided with a packing assembly (7). The valve cover (6) is provided with a guide sleeve (9). The valve cover (6) is provided with a round nut (8). One end of the valve cover (6) is provided with a toothed gasket (5). The valve body (1) is provided with a bellows assembly (4). One end of the valve stem assembly (11) is provided with a valve core (3). The valve core (3) is provided with a sealing ring (10).

2. The rapid core-pulling cryogenic bellows valve according to claim 1, characterized in that: The valve body (1) has an inlet at one end and an outlet at the other end, and the channel inside the valve body (1) is a streamlined cylindrical shape.

3. The rapid core-pulling cryogenic bellows valve according to claim 2, characterized in that: The valve cover (6) and the valve body (1) are connected by studs and nuts.

4. The rapid core-pulling cryogenic bellows valve according to claim 3, characterized in that: The filler assembly (7) is made of V-type PTFT.

5. A rapid core-pulling cryogenic bellows valve according to claim 4, characterized in that: The valve body (1) is composed of a valve body (1) forging and a stainless steel tube.

6. The rapid core-pulling cryogenic bellows valve according to claim 5, characterized in that: The toothed gasket (5) is located at the connection between the valve body (1) and the valve cover (6).

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