A hemispherical valve purging structure

Abstract

This invention provides a purging structure for a hemispherical valve, including a valve stem and a valve body. The valve body includes a housing and an arc-shaped body disposed within the housing. The valve stem includes an upper valve stem and a lower valve stem. The lower end of the upper valve stem is embedded in the upper end of the arc-shaped body, and the upper end of the lower valve stem is rotatably connected to the arc-shaped body. Several cleaning holes are opened near one end of the housing, and plugs are installed in the cleaning holes. An upper spacer ring is provided at the upper end of the arc-shaped body, and a lower spacer ring is provided at the bottom end of the arc-shaped body. This invention uses an arc-shaped body instead of the existing spherical valve body to reduce the overall weight of the valve. The upper and lower spacer rings can prevent backflow and liquid accumulation. When cleaning is required, the arc-shaped body is rotated to block the water inlet and open the cleaning holes. Clean water enters the internal cavity of the housing through the cleaning holes, cleaning the surface of the ceramic ball. Thus, the ceramic valve ball and its cavity can be cleaned without disassembling the ball valve, improving the service life of the ceramic ball valve without affecting production.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and more specifically, to a purge structure for a hemispherical valve. Background Technology

[0002] A ball valve contains an opening and closing element and a valve stem. The opening and closing element is a ball, which is rotated by the valve stem around the valve's axis. It can also be used for fluid regulation and control. Existing ceramic ball valves have the following problems: First, the ball valve is relatively heavy, increasing the overall weight of the valve; second, after long-term use, coking occurs on the inner wall of the ball valve. Cleaning the cavity of the ceramic ball valve requires disassembling the entire valve, which necessitates shutting down the entire pipeline system, affecting production. Therefore, there is an urgent need for a lighter and easier-to-clean valve. Utility Model Content

[0003] This invention provides a purge structure for a hemispherical valve, which aims to solve the technical problems of ceramic ball valves being unable to clean their internal cavities during valve operation and having a relatively heavy overall weight.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a hemispherical valve purging structure, comprising a valve stem and a valve body, the valve body comprising a housing and an arc-shaped body disposed within the housing, the valve stem comprising an upper valve stem and a lower valve stem, the lower end of the upper valve stem being fitted into the upper end of the arc-shaped body, the upper end of the lower valve stem being rotatably connected to the arc-shaped body, the housing having a plurality of cleaning holes near one end, the cleaning holes being fitted with plugs, the upper end of the arc-shaped body being provided with an upper spacer ring, and the bottom end of the arc-shaped body being provided with a lower spacer ring.

[0005] Furthermore, the upper spacer ring is sleeved on the upper valve stem, and the lower spacer ring is sleeved on the lower valve stem. The upper and lower end faces of the upper and lower spacer rings are provided with sealing grooves, and a first sealing ring is installed in the sealing groove.

[0006] Furthermore, a first annular bushing is provided on the inner side of one end of the housing, and a second annular bushing is provided on the arcuate surface of the arcuate body.

[0007] Furthermore, the first annular bushing is fitted with several second sealing rings.

[0008] Furthermore, the two end faces of the housing have several mounting holes.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This utility model discloses a simple and ingeniously designed hemispherical valve purging structure, comprising a valve stem and a valve body. The valve body includes a housing and an arc-shaped body disposed within the housing. The valve stem includes an upper valve stem and a lower valve stem. The lower end of the upper valve stem is embedded in the upper end of the arc-shaped body, and the upper end of the lower valve stem is rotatably connected to the arc-shaped body. Several cleaning holes are opened near one end of the housing, and plugs are installed in the cleaning holes. An upper spacer ring is provided at the upper end of the arc-shaped body, and a lower spacer ring is provided at the bottom end of the arc-shaped body. This utility model uses an arc-shaped body instead of the existing spherical valve body to reduce the overall weight of the valve. The upper and lower spacer rings can prevent backflow and liquid accumulation. When cleaning is required, the arc-shaped body is rotated to block the water inlet end and open the cleaning holes. Clean water enters the internal cavity of the housing through the cleaning holes, and the clean water can clean the surface of the ceramic ball. In this way, the ceramic valve ball and its cavity can be cleaned without disassembling the ball valve, improving the service life of the ceramic ball valve and not affecting production. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a hemispherical valve purging structure according to this utility model;

[0013] Figure 2 This is a cross-sectional view of a hemispherical valve purging structure according to this utility model;

[0014] Figure 3 This is a schematic diagram of the arc-shaped structure of a hemispherical valve purging structure according to this utility model;

[0015] Figure 4 This is an exploded view of a hemispherical valve purging structure according to this utility model.

[0016] Explanation of main component symbols

[0017] 10. Housing; 101. Cleaning hole; 102. First annular bushing; 103. Mounting hole;

[0018] 20. Upper valve stem; 201. Upper spacer ring;

[0019] 30. Lower valve stem; 301. Lower spacer ring;

[0020] 40. Arc-shaped body; 401. Second arc-shaped bushing. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Example

[0025] Reference Figure 1-4As shown, this utility model discloses a hemispherical valve purging structure, including a valve stem and a valve body. The valve body includes a housing 10 and an arc-shaped body 40 disposed within the housing 10. The valve stem includes an upper valve stem 20 and a lower valve stem 30. The upper valve stem 20 is rotatably mounted on the upper end of the housing 10, and the lower valve stem 30 is rotatably mounted on the lower end of the housing 10. The lower end of the upper valve stem 20 is embedded in the upper end of the arc-shaped body 40, and the upper end of the lower valve stem 30 is rotatably connected to the arc-shaped body 40. The opening and closing of the valve is achieved by rotating the upper valve stem 20, which drives the arc-shaped body 40 to rotate within the cavity of the housing 10. An upper spacer ring 201 is provided at the upper end of the arc-shaped body 40, and a lower spacer ring 301 is provided at the bottom end of the arc-shaped body 40. Specifically, the upper spacer ring 201 is fitted onto the upper valve stem 20, and the lower spacer ring 301 is fitted onto the lower valve stem 30. The upper and lower end faces of the upper spacer ring 201 and the lower spacer ring 301 have sealing grooves, and a first sealing ring is installed in the sealing groove. The upper spacer ring 201 is located between the upper end face of the arc-shaped body 40 and the upper top inside the housing 10. The first sealing ring can prevent liquid in the cavity inside the housing 10 from leaking through the gap between the upper valve stem 20 and the housing 10, as well as prevent liquid backflow and accumulation. Similarly, the lower spacer ring 301 fitted onto the lower valve stem 30 can prevent liquid in the housing 10 from leaking through the gap between the lower valve stem 30 and the housing 10, as well as prevent liquid backflow and accumulation.

[0026] Reference Figure 1-2 As shown, the housing 10 has several cleaning holes 101 near one end. The cleaning holes 101 are fitted with plugs. Specifically, when it is necessary to clean the internal cavity of the housing 10, the plugs are opened and the cleaning fluid enters the cavity from the plugs to clean the internal cavity of the housing 10. This allows cleaning to be performed without disassembling the valve body.

[0027] Reference Figure 3-4 As shown, a first annular bushing 102 is provided on the inner side of one end of the housing 10, and a second annular bushing is provided on the arc-shaped surface of the arc-shaped body 40. The first annular bushing 102 slides in contact with the second annular bushing. When the valve is closed, the arc-shaped surface of the arc-shaped body 40 rotates to the position of the first annular bushing 102, and the first and second annular bushings fit together, thus blocking the opening at one end of the housing 10. Furthermore, the first annular bushing 102 is fitted with several second sealing rings. In this embodiment, the first bushing is fitted with three second sealing rings. The first bushing is bolted to one end of the housing 10, and the first sealing rings are located between the housing 10 and the first bushing, preventing liquid from flowing out from the position where the arc-shaped body 40 contacts the housing 10.

[0028] Reference Figure 1 As shown, the two ends of the housing 10 have several mounting holes 103. The mounting holes 103 are used to connect pipes. Bolts pass through the mounting holes 103 to connect the pipes and play a role in fixing the connection.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hemispherical valve purging structure, characterized in that; The valve includes a valve stem and a valve body. The valve body includes a housing and an arc-shaped body disposed within the housing. The valve stem includes an upper valve stem and a lower valve stem. The lower end of the upper valve stem is fitted into the upper end of the arc-shaped body, and the upper end of the lower valve stem is rotatably connected to the arc-shaped body. The housing has several cleaning holes near one end, and plugs are installed in the cleaning holes. An upper spacer ring is provided at the upper end of the arc-shaped body, and a lower spacer ring is provided at the bottom end of the arc-shaped body.

2. The hemispherical valve purging structure according to claim 1, characterized in that: The upper spacer ring is sleeved on the upper valve stem, and the lower spacer ring is sleeved on the lower valve stem. The upper and lower end faces of the upper and lower spacer rings are provided with sealing grooves, and a first sealing ring is installed in the sealing groove.

3. The hemispherical valve purging structure according to claim 1, characterized in that: A first annular bushing is provided on the inner side of one end of the housing, and a second annular bushing is provided on the arc-shaped surface of the arc-shaped body.

4. The hemispherical valve purging structure according to claim 3, characterized in that: The first annular bushing is fitted with several second sealing rings.

5. The hemispherical valve purging structure according to claim 1, characterized in that: The two ends of the housing have several mounting holes.

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