High platform ball valve

Abstract

The utility model relates to a high platform ball valve which comprises a valve body and a valve rod, the valve rod is connected with a ball body, a first positioning assembly is arranged between the valve rod and the valve body, the first positioning assembly is located at the initial contact position of the valve rod and the valve body, the first positioning assembly comprises a valve body positioning ring and a valve rod positioning ring, and the valve body positioning ring is arranged on the valve rod in a sleeving mode. A first placement space is formed between the valve body positioning ring and the valve body, a second placement space is formed between the valve body positioning ring and the valve rod, the valve rod positioning ring is arranged on the valve rod in a sleeving mode and located in the first placement space, and a first plastic guide ring is arranged between the valve rod positioning ring and the valve body positioning ring and located in the first placement space. A second plastic guide ring is arranged between the valve body positioning ring and the valve body and located in the second containing space. The three-side positioning function is achieved on the whole, and the positioning effect of the valve rod is improved in a multi-positioning mode.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a high-platform ball valve. Background Technology

[0002] Ball valves and gate valves belong to the same type of valve. The difference is that the closing element of a ball valve is a ball. The ball rotates around the center line of the valve body to open and close the valve. Ball valves are mainly used in pipelines for shut-off, distribution and changing the flow direction of the medium. Ball valves are a widely used new type of valve.

[0003] Ball valves generally consist of a valve body and a valve stem. The valve stem drives the ball to rotate. However, because the existing valve stem positioning methods are all single positioning, inaccurate positioning may occur during rotation, affecting the performance. Summary of the Invention

[0004] The purpose of this utility model is to provide a high-platform ball valve to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-platform ball valve, characterized in that it includes a valve body and a valve stem, the valve stem being connected to a ball, a first positioning component being disposed between the valve stem and the valve body, the first positioning component being located at the initial contact point between the valve stem and the valve body, the first positioning component including a valve body positioning ring and a valve stem positioning ring, the valve body positioning ring being sleeved on the valve stem, a first placement space being formed between the valve body positioning ring and the valve body, a second placement space being formed between the valve body positioning ring and the valve stem, the valve stem positioning ring being sleeved on the valve stem and located in the first placement space, and a plastic guide ring being disposed in the first placement space and / or the second placement space.

[0007] The present invention further includes an adjusting spring below the first positioning component, an anti-loosening washer and an adjusting nut below the adjusting spring, and a packing sleeve and a matching packing assembly below the adjusting nut. The packing sleeve and the packing assembly form a second positioning component. The packing assembly is sleeved on the valve stem and abuts against the valve body through the packing sleeve.

[0008] The present invention further includes a third positioning component on the side of the valve stem near the ball, the third positioning component being a plastic washer fitted onto the valve stem.

[0009] The present invention further includes valve seats on both sides of the valve body, and a bushing between the valve seat and the valve body, the bushing being sleeved on the valve seat.

[0010] The present invention further includes a valve cover, which is located outside the valve seat. A compensating spring is provided between the valve cover and the valve body, and a metal washer is provided on the side of the compensating spring near the valve seat.

[0011] In a further embodiment of this invention, a sealing ring is provided between the valve body and the valve stem, and the sealing ring is located below the packing assembly.

[0012] In a further embodiment of this invention, the adjusting spring is a wave spring, a saddle spring, or a disc spring.

[0013] The beneficial effects of this utility model are as follows: This utility model achieves a three-sided positioning function overall, improving the positioning effect of the valve stem through multiple positioning methods. Specifically, a first positioning component is formed by a valve body positioning ring and a valve stem positioning ring, achieving dual positioning between the valve stem and the valve body. The two ends of the valve body positioning ring abut against the valve body and the valve stem respectively, forming a first placement space and a second placement space. The first placement space is used to place the valve stem positioning ring to further achieve the positioning of the valve stem, and is equipped with a first plastic guide ring to ensure the stability and guidance of the valve stem during rotation. Secondly, a second plastic guide ring is equipped in the second placement space. Since both the valve body positioning ring and the valve stem positioning ring are sleeved on the valve stem, the second plastic guide ring is used to ensure the stability and guidance of the valve body positioning ring, achieving radial centering. The first plastic guide ring and the second plastic guide ring can be selected or both can be selected according to requirements. The first positioning component can ensure the positioning effect of the valve stem and avoid eccentricity, ensuring the concentricity of the valve stem. In addition, the second positioning component is composed of a packing sleeve and a packing group, which has an automatic centering function to prevent eccentricity while ensuring sealing; the third positioning component is achieved by a metal gasket. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of two plastic guide rings used in an embodiment of the present invention.

[0016] Figure 2 This is a perspective view of an embodiment of the present utility model.

[0017] Figure 3 This is a schematic diagram of the structure of a single plastic guide ring in an embodiment of the present invention.

[0018] Reference numerals in the attached drawings: 1. Valve body; 2. Valve seat; 3. Valve stem; 4. Valve seat; 5. Bushing; 6. Valve body locating ring; 7. Valve stem locating ring; 8. Ball; 9. Adjusting nut; 10. Anti-loosening washer; 11. Packing assembly; 12. Packing sleeve; 13. Sealing ring; 14. Compensating spring; 15. Plastic washer; 17. Metal washer; 18. First plastic guide ring; 19. Second plastic guide ring; 24. Adjusting spring; Detailed Implementation

[0019] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0020] like Figure 1-2 As shown, this utility model provides a high-platform ball valve, including a valve body 1 and a valve stem 3. The valve stem 3 is connected to a ball 8. A first positioning component is provided between the valve stem 3 and the valve body 1. The first positioning component is located at the initial contact point between the valve stem 3 and the valve body 1. The first positioning component includes a valve body positioning ring 6 and a valve stem positioning ring 7. The valve body positioning ring 6 is sleeved on the valve stem 3, forming a first placement space between the valve body positioning ring 6 and the valve body 1, and forming a second placement space between the valve body positioning ring 6 and the valve stem 3. The valve stem positioning ring 7 is sleeved on the valve stem 3 and located in the first placement space. A plastic guide ring is provided in the first placement space and / or the second placement space.

[0021] like Figure 3 As shown, when setting the plastic guide ring, a first plastic guide ring 18 can be set separately between the valve stem positioning ring 7 and the valve body positioning ring 6, and the first plastic guide ring 18 is located in the first placement space.

[0022] Alternatively, a second plastic guide ring 19 may be provided separately between the valve body positioning ring 6 and the valve body 1, and the second plastic guide ring 19 is located in the second placement space.

[0023] Alternatively, a first plastic guide ring or a second plastic guide ring may be provided simultaneously in the first placement space and the second placement space, respectively, such as... Figure 2 As shown;

[0024] In this invention, an adjusting spring 24 is provided below the first positioning component. The adjusting spring can be a wave spring, a saddle spring, a disc spring, or other springs. Below the adjusting spring 24, an anti-loosening washer 10 and an adjusting nut 9 are provided. Below the adjusting nut 9, a packing sleeve 12 and a matching packing assembly 11 are provided. The packing sleeve 12 and the packing assembly 11 form the second positioning component. The packing assembly 11 is sleeved on the valve stem 3 and abuts against the valve body 1 through the packing sleeve 12. The packing assembly 11 is a V-shaped packing assembly. The functions of the adjusting nut 9 and the anti-loosening washer 10, as well as the functions of the packing sleeve 12 and the packing assembly 11, have been described in patent publication number CN218440951U and will not be elaborated upon here.

[0025] In addition, a third positioning component is provided on the side of the valve stem 3 near the ball 8. The third positioning component is a plastic washer 15 and is sleeved on the valve stem 3.

[0026] In this invention, valve seats 42 are provided on both sides of the valve body 1, and a bushing 5 is provided between the valve seat 42 and the valve body 1, with the bushing 5 fitted onto the valve seat 42. A valve cover is also included, located outside the valve seat 42. A compensating spring 14 is provided between the valve cover and the valve body 1, and a metal washer 17 is provided on the side of the compensating spring 14 closest to the valve seat 42. The function of the compensating spring 14 is to press the metal washer 17 and provide compensating force during the rotation of the ball 8.

[0027] In addition, to ensure the sealing performance between the valve body 1 and the valve stem 3, a sealing ring 13 is provided between the valve body 1 and the valve stem 3, and the sealing ring 13 is located below the packing assembly 11.

[0028] This utility model achieves a three-sided positioning function overall, improving the positioning effect of the valve stem 3 through multiple positioning methods. Specifically, the valve body positioning ring 6 and the valve stem positioning ring 7 form a first positioning component, realizing dual positioning between the valve stem 3 and the valve body 1. The two ends of the valve body positioning ring 6 abut against the valve body 1 and the valve stem 3 respectively, forming a first placement space and a second placement space. The first placement space is used to place the valve stem positioning ring 7 to further position the valve stem 3, and is equipped with a first plastic guide ring 18 to ensure the stability and guidance of the valve stem 3 during rotation. Secondly, the second placement space is equipped with a second plastic guide ring 19. Since both the valve body positioning ring 6 and the valve stem positioning ring 7 are sleeved on the valve stem 3, the second plastic guide ring 19 is used to ensure the stability and guidance of the valve body positioning ring 6. The first positioning component can ensure the positioning effect of the valve stem 3 and avoid eccentricity, ensuring the concentricity of the valve stem 3. In addition, the second positioning component is composed of a packing sleeve 12 and a packing group 11, which has an automatic centering function to prevent eccentricity while ensuring sealing; the third positioning component is achieved by a metal gasket 17.

[0029] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0030] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0031] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept by means of the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A high-platform ball valve, characterized in that, The device includes a valve body and a valve stem. The valve stem is connected to a ball. A first positioning component is provided between the valve stem and the valve body. The first positioning component is located at the initial contact point between the valve stem and the valve body. The first positioning component includes a valve body positioning ring and a valve stem positioning ring. The valve body positioning ring is sleeved on the valve stem, forming a first placement space between the valve body positioning ring and the valve body. A second placement space is formed between the valve body positioning ring and the valve stem. The valve stem positioning ring is sleeved on the valve stem and located in the first placement space. A plastic guide ring is provided in the first placement space and / or the second placement space.

2. The high-platform ball valve according to claim 1, characterized in that, An adjusting spring is provided below the first positioning component. An anti-loosening washer and an adjusting nut are provided below the adjusting spring. A packing sleeve and a matching packing assembly are provided below the adjusting nut. The packing sleeve and the packing assembly form a second positioning component. The packing assembly is sleeved on the valve stem and abuts against the valve body through the packing sleeve.

3. A high-platform ball valve according to claim 1 or 2, characterized in that, A third positioning component is provided on the side of the valve stem near the ball. The third positioning component is a plastic washer that is fitted onto the valve stem.

4. A high-platform ball valve according to claim 1, characterized in that, Valve seats are provided on both sides of the valve body, and a bushing is provided between the valve seat and the valve body, with the bushing fitted onto the valve seat.

5. A high-platform ball valve according to claim 4, characterized in that, It also includes a valve cover, which is located outside the valve seat. A compensating spring is provided between the valve cover and the valve body, and a metal washer is provided on the side of the compensating spring near the valve seat.

6. A high-platform ball valve according to claim 2, characterized in that, A sealing ring is also provided between the valve body and the valve stem, and the sealing ring is located below the packing assembly.

7. A high-platform ball valve according to claim 2, characterized in that, The adjusting spring is a wave spring, a saddle spring, or a disc spring.

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