A stop valve for chemical material conveying

Abstract

The utility model relates to the technical field of stop valve discloses a stop valve for chemical material conveying, which comprises a valve body provided with an inlet end, an outlet end and a valve channel connecting the two; a valve seat is arranged on the top of the valve body; an assembly bolt penetrates through the valve seat; a threaded seat is arranged on the top of the assembly bolt; the threaded seat is threadedly connected with a threaded valve rod; the threaded valve rod is composed of a threaded rod part and a valve rod part; a handle is arranged on the top end of the threaded valve rod; a valve rod sliding sleeve is inlaid in the valve seat; the threaded valve rod is inserted into the valve rod sliding sleeve, and a sealing rubber gasket is arranged at the bottom end; a sealing rubber column is perpendicularly connected to the bottom of the sealing rubber gasket. Through the cooperation of the threaded valve rod and the valve rod sliding sleeve, the sealing rubber column can be accurately inserted into or separated from the rubber column insertion port of the channel rubber sleeve, thereby realizing accurate control of fluid flow. Meanwhile, the sealing rubber gasket and the channel rubber sleeve are extruded, thereby forming reliable secondary sealing and greatly improving the sealing performance of the valve.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically a gate valve for conveying chemical materials. Background Technology

[0002] Chemical material conveying systems play a crucial role in the chemical industry, involving the transport, control, and regulation of liquids, gases, and solids. In these systems, gate valves, as commonly used control elements, are widely applied in pipeline systems during chemical production processes for fluid on / off control. However, existing gate valves for chemical material conveying still suffer from several significant problems in practical applications, primarily manifested in complex structures, suboptimal sealing performance, and short service life, which severely impact the safety and efficiency of chemical material conveying.

[0003] Traditional gate valves typically consist of a valve body, valve seat, valve disc, valve stem, and sealing rings. While these components can regulate and control fluid flow to some extent, their complex design leads to certain deficiencies in sealing performance, flow control, and service life. For example, traditional gate valves often use metal-to-metal or metal-to-rubber contact for sealing. Under high temperature, high pressure, or highly corrosive environments, this sealing method is prone to incomplete sealing and leakage, leading to material leakage, operational difficulties, or equipment damage.

[0004] Furthermore, some chemical materials may be high-viscosity, highly corrosive, or contain solid particles, requiring gate valves to have higher corrosion resistance and wear resistance. However, the material selection and sealing structure design of existing gate valves often fail to meet these requirements, leading to frequent leakage, jamming, or wear problems during the transportation of chemical materials, causing unnecessary risks and losses to the production process.

[0005] Therefore, based on the above-mentioned technical problems, it is necessary for those skilled in the art to develop a shut-off valve for conveying chemical materials. Utility Model Content

[0006] The purpose of this invention is to provide a shut-off valve for conveying chemical materials, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A technical solution for a gate valve for conveying chemical materials includes: a valve body having an inlet end, an outlet end, and a valve channel connecting the two.

[0009] The valve body is provided with a valve seat at the top, and an assembly bolt passes through the valve seat. The assembly bolt is provided with a threaded seat at the top, and the threaded seat is threadedly connected to a threaded valve stem. The threaded valve stem is composed of a threaded rod part and a valve stem part. A handle is provided at the top of the threaded valve stem. A valve stem sleeve is embedded in the valve seat. The threaded valve stem is inserted into the valve stem sleeve and a sealing gasket is provided at the bottom. A sealing column is vertically connected to the bottom of the sealing gasket.

[0010] A channel sleeve embedded in the valve passage has a rubber column insertion port corresponding to the sealing rubber column.

[0011] As a preferred technical solution, the threaded valve stem drives the valve stem sleeve to move vertically by rotation, causing the sealing rubber column to insert into or detach from the rubber column insertion port of the channel rubber sleeve. At the same time, the sealing rubber gasket is squeezed against the channel rubber sleeve to form a secondary seal.

[0012] As a preferred technical solution, the channel sleeve is interference-fitted with the valve channel, and its inner diameter is consistent with the pipe diameter of the feed end and the discharge end.

[0013] As a preferred technical solution, the diameter of the sealing gasket is larger than the inner diameter of the valve channel, forming a radial sealing surface.

[0014] As a preferred technical solution, the assembly bolt symmetrically penetrates the valve seat and the top of the valve body, fixing the two together.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model relates to a gate valve for conveying chemical materials. Through the mating design of the threaded valve stem and valve stem sleeve, the sealing rubber column can be precisely inserted into or disengaged from the rubber column inlet of the channel sleeve, achieving precise control of fluid flow. Simultaneously, the compression action between the sealing gasket and the channel sleeve forms a reliable secondary seal, significantly improving the valve's sealing performance. Furthermore, the interference fit design between the channel sleeve and the valve channel, and the design that the diameter of the sealing gasket is larger than the inner diameter of the valve channel, further enhance the valve's sealing effect, ensuring the safety of materials during conveying.

[0017] The gate valve of this invention also has the advantages of simple structure and long service life. By optimizing the valve's structural design, the complexity and manufacturing cost of the valve are reduced, while the durability and stability of the valve are improved. This makes the gate valve of this invention have a wider range of application prospects in chemical material conveying systems. Attached Figure Description

[0018] Figure 1 This is a front view of a gate valve for conveying chemical materials.

[0019] Figure 2This is a partial cross-sectional schematic diagram of a gate valve for conveying chemical materials;

[0020] Figure 3 This is a schematic diagram showing the disassembled structure of a gate valve for conveying chemical materials.

[0021] In the attached diagram, the following are the reference numerals: 1. Valve body; 11. Inlet end; 12. Outlet end; 13. Valve passage; 2. Valve seat; 21. Assembly bolt; 22. Threaded seat; 23. Threaded valve stem; 24. Handle; 25. Valve stem sleeve; 26. Sealing gasket; 27. Sealing column; 3. Passage sleeve; 31. Column socket. Detailed Implementation

[0022] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. For those skilled in the art, this utility model can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of this utility model by illustrating examples.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a technical solution for a gate valve for conveying chemical materials, including components such as valve body 1, valve seat 2, threaded valve stem 23, and channel sleeve 3.

[0024] The valve body 1 serves as the main structure of the shut-off valve, and it is equipped with an inlet end 11, an outlet end 12, and a valve passage 13 connecting the two. These designs ensure that the material can smoothly enter the valve body 1 from the inlet end 11 and flow to the outlet end 12 through the valve passage 13.

[0025] A valve seat 2 is provided on the top of the valve body 1, and a valve stem sleeve 25 is embedded in the valve seat 2. An assembly bolt 21 is also provided through the valve seat 2, and a threaded seat 22 is provided on the top of the assembly bolt 21. The threaded seat 22 is threadedly connected to a threaded valve stem 23, which consists of a threaded rod part and a valve stem part, and a handle 24 is provided at its top. The threaded valve stem 23 is inserted into the valve stem sleeve 25, and a sealing gasket 26 is provided at its bottom end. A sealing post 27 is vertically connected to the bottom of the sealing gasket 26.

[0026] The channel sleeve 3 is embedded in the valve channel 13, and has a rubber column insertion port 31 corresponding to the sealing rubber column 27. When it is necessary to control the fluid flow rate, the operator can rotate the handle 24, which drives the valve stem slide sleeve 25 to move vertically through the rotation of the threaded valve stem 23. This movement will cause the sealing rubber column 27 to insert into or disengage from the rubber column insertion port 31 of the channel sleeve 3, thereby achieving precise control of the fluid flow rate.

[0027] In terms of sealing design, when the sealing rubber column 27 is inserted into the rubber column socket 31, the sealing rubber gasket 26 and the channel rubber sleeve 3 will be squeezed together, forming a secondary seal. This design greatly improves the sealing performance of the valve and ensures the safety of materials during the conveying process.

[0028] Furthermore, the channel sleeve 3 and the valve channel 13 are designed with an interference fit, and its inner diameter is consistent with the pipe diameter of the feed end 11 and the discharge end 12. This design not only enhances the sealing effect of the valve, but also ensures the smooth flow of materials during the conveying process. At the same time, the diameter of the sealing gasket 26 is larger than the inner diameter of the valve channel 13, forming a radial sealing surface, which further improves the sealing performance of the valve.

[0029] Assembly bolts 21 symmetrically penetrate the top of the valve seat 2 and the valve body 1, fixing them together securely. This design ensures the stability between the valve seat 2 and the valve body 1, preventing loosening or leakage during use.

[0030] The gate valve for conveying chemical materials provided by this utility model has advantages such as simple structure, good sealing performance, and long service life. By optimizing the valve's structural design, this utility model not only improves the valve's durability and stability but also reduces its complexity and manufacturing cost. This makes the gate valve of this utility model have a wider range of application prospects in chemical material conveying systems.

[0031] The working principle and usage process of this utility model: After assembling each component of this solution in sequence, work according to the above implementation methods according to actual needs to complete all working steps.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", 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 connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The embodiments described above are not exhaustive, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the invention, enabling those skilled in the art to effectively utilize the invention and its modifications. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A shut-off valve for conveying chemical materials, characterized in that, include: The valve body (1) is provided with a feed end (11), a discharge end (12) and a valve channel (13) connecting the two. The valve body (1) is provided with a valve seat (2) at the top, and an assembly bolt (21) passes through the valve seat (2). The assembly bolt (21) is provided with a threaded seat (22) at the top. The threaded seat (22) is threadedly connected to a threaded valve stem (23). The threaded valve stem (23) is composed of a threaded rod part and a valve stem part. The top of the threaded valve stem (23) is provided with a handle (24). The valve seat (2) is embedded with a valve stem sleeve (25). The threaded valve stem (23) is inserted into the valve stem sleeve (25) and a sealing gasket (26) is provided at the bottom. A sealing column (27) is vertically connected to the bottom of the sealing gasket (26). The channel sleeve (3) is embedded in the valve channel (13) and has a glue column inlet (31) corresponding to the sealing glue column (27).

2. The shut-off valve for conveying chemical materials according to claim 1, characterized in that: The threaded valve stem (23) drives the valve stem sleeve (25) to move vertically by rotation, which causes the sealing rubber column (27) to be inserted into or disengaged from the rubber column insertion port (31) of the channel rubber sleeve (3). At the same time, the sealing rubber gasket (26) is squeezed against the channel rubber sleeve (3) to form a secondary seal.

3. The shut-off valve for conveying chemical materials according to claim 1, characterized in that: The channel sleeve (3) is press-fitted with the valve channel (13), and its inner diameter is consistent with the pipe diameter of the feed end (11) and the discharge end (12).

4. A shut-off valve for conveying chemical materials according to claim 1, characterized in that: The diameter of the sealing gasket (26) is larger than the inner diameter of the valve channel (13), forming a radial sealing surface.

5. A shut-off valve for conveying chemical materials according to claim 1, characterized in that: The assembly bolt (21) symmetrically penetrates the top of the valve seat (2) and the valve body (1) to fix the two together.

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