A stop valve

Abstract

This utility model belongs to the field of gate valve technology, and particularly relates to a gate valve, comprising: a valve body having a fluid passage and a valve seat; a valve stem movably mounted on the valve body; a valve core assembly including a sealing block, an adjusting block, and a filter cartridge, wherein the sealing block is connected to the valve stem for blocking the fluid passage, the adjusting block is mounted on the sealing block and located at the fluid passage, and the filter cartridge is mounted on the adjusting block; a control assembly mounted on the valve body for driving the valve stem to move; the adjusting block has a flow passage, with an inlet formed at the bottom of the flow passage and an outlet formed on the periphery of the flow passage; the beneficial effects of this utility model are that the sealing block provides a liquid shut-off effect, the size of the outlet exposed in the fluid passage when the adjusting block moves upward achieves a flow regulation effect, and the filter cartridge provides a liquid filtration effect, preventing impurities from remaining between the sealing block and the valve seat and affecting the sealing performance when the valve is closed.

Description

Technical Field

[0001] This utility model belongs to the field of gate valve technology, and in particular relates to a gate valve. Background Technology

[0002] A gate valve, also known as a stop valve, is a type of forced-seal valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to ensure a leak-proof seal. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the frictional force of the valve stem and packing, plus the thrust generated by the pressure of the medium. The force required to close the valve is greater than the force required to open it, so the valve stem diameter must be large; otherwise, the valve stem may bend.

[0003] In the existing technology, most gate valves do not have a filtering function. When the fluid carries impurities, the impurities are prone to accumulate at the valve core, thereby affecting the sealing performance between the valve core and the valve seat. Utility Model Content

[0004] The purpose of this utility model is to provide a shut-off valve to address the aforementioned technical problems.

[0005] In view of this, the present invention provides a shut-off valve, comprising: The valve body has a fluid passage and a valve seat. Valve stem, which is movably mounted on the valve body; A valve core assembly includes a sealing block, an adjusting block, and a filter cartridge. The sealing block is connected to the valve stem to block the fluid passage. The adjusting block is installed on the sealing block and located at the fluid passage. The filter cartridge is installed on the adjusting block. The control component is mounted on the valve body and is used to drive the valve stem to move. The regulating block has a flow channel, which has an inlet at the bottom and an outlet on the periphery.

[0006] Furthermore, the filter cartridge is mounted on the adjusting block by fasteners.

[0007] Furthermore, the adjusting block is provided with a threaded section, and the sealing block is provided with a threaded hole, with the threaded section and the threaded hole being adapted to each other for connection.

[0008] Furthermore, the valve body has an installation port, and a cover plate is installed at the installation port to seal the installation port.

[0009] Furthermore, there are several liquid outlets arranged in a ring array.

[0010] The beneficial effects of this utility model are: The valve core assembly of this shut-off valve consists of a sealing block, an adjusting block, and a filter cartridge. The sealing block abuts against the valve seat to block the fluid passage and achieve the effect of shutting off the liquid. The adjusting block is installed on the sealing block and has a fluid passage. The size of the liquid outlet exposed by the fluid passage when the adjusting block moves upward achieves the effect of flow regulation. At the same time, the filter cartridge installed in the sealing block filters the liquid and prevents impurities from being trapped between the sealing block and the valve seat, which would affect the sealing performance when the valve is closed. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial structural schematic diagram of the valve core assembly in this utility model; The markings in the diagram represent: 1. Valve body; 11. Fluid passage; 12. Valve seat; 13. Mounting port; 2. Valve stem; 3. Valve core assembly; 31. Sealing block; 32. Adjusting block; 33. Filter cartridge; 34. Flow passage; 35. Threaded section; 4. Control assembly; 5. Cover plate. Detailed Implementation

[0012] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0013] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0014] Example 1:

[0015] This embodiment provides a shut-off valve, including: Valve body 1, on which a fluid passage 11 and a valve seat 12 are provided; Valve stem 2 is movably mounted on valve body 1; The valve core assembly 3 includes a sealing block 31, an adjusting block 32, and a filter cartridge 33. The sealing block 31 is connected to the valve stem 2 to block the fluid passage 11. The adjusting block 32 is installed on the sealing block 31 and located at the fluid passage 11. The filter cartridge 33 is installed on the adjusting block 32. Control component 4 is mounted on valve body 1 and is used to drive valve stem 2 to move. The regulating block 32 has an overflow channel 34, which has an inlet at the bottom and an outlet on the periphery of the regulating block 32.

[0016] Furthermore, there are several liquid outlets arranged in a ring array.

[0017] In this technical solution, when the shut-off valve is in the closed state, the sealing block 31 and the valve seat 12 abut against each other to block the fluid channel 11. At the same time, the regulating block 32 is located inside the fluid channel 11, and the outlet on the regulating block 32 is blocked by the inner wall of the fluid channel 11, preventing liquid from passing through the fluid channel 11. When the valve is opened, the operator controls the control component 4 to drive the valve stem 2 to move upward inside the valve body 1, separating the sealing block 31 and the valve seat 12. Simultaneously, the regulating block 32 also moves upward along with the sealing block 31. As the regulating block 32 moves upward, the exposed outlet on the regulating block 32 gradually increases in size, thereby increasing the flow rate of liquid flowing out of the regulating block 32 and achieving the flow regulation function.

[0018] Meanwhile, the filter cartridge 33 is installed inside the regulating block 32. During the process of liquid flowing into the regulating block 32 from the inlet and then out of the regulating block 32 from the outlet, the filter cartridge 33 plays a filtering role on the liquid, thereby filtering impurities in the liquid and realizing the liquid impurity removal function.

[0019] In summary, the valve core assembly 3 of this shut-off valve consists of a sealing block 31, an adjusting block 32, and a filter cartridge 33. The sealing block 31 abuts against the valve seat 12 to block the fluid passage 11, thereby achieving the effect of shutting off the liquid. The adjusting block 32 is installed on the sealing block 31 and has a fluid passage 11. The size of the exposed outlet of the fluid passage 11 when the adjusting block 32 moves upward achieves the effect of flow regulation. At the same time, the filter cartridge 33 installed in the sealing block 31 filters the liquid, preventing impurities from remaining between the sealing block 31 and the valve seat 12 and affecting the sealing performance when the valve is closed.

[0020] Example 2:

[0021] This embodiment provides a shut-off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0022] Furthermore, the filter cartridge 33 is mounted on the adjusting block 32 by means of fasteners.

[0023] With this structural design, the filter cartridge 33 can be installed and connected to the adjusting block 32 by setting several screws, which is convenient for disassembly and assembly. At the same time, the filter cartridge 33 and the adjusting block 32 are designed as separate units, which also facilitates replacement and maintenance and reduces maintenance costs.

[0024] Example 3:

[0025] This embodiment provides a shut-off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0026] Furthermore, the adjusting block 32 is provided with a threaded section 35, and the sealing block 31 is provided with a threaded hole, and the threaded section 35 and the threaded hole are adapted to be connected.

[0027] This structural design allows for a detachable connection between the adjusting block 32 and the sealing block 31, and they are also separate entities, facilitating disassembly and maintenance, reducing maintenance costs, and improving economic efficiency.

[0028] Example 4:

[0029] This embodiment provides a shut-off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0030] Furthermore, the valve body 1 has an installation port 13, and a cover plate 5 for sealing the installation port 13 is installed at the installation port 13.

[0031] In this technical solution, the mounting port 13 is located at the bottom of the valve body 1. An internal thread structure can be formed on the inner wall of the mounting port 13, and the cover plate 5 has an external thread structure adapted to the structure of the mounting port 13. This structural design allows the cover plate 5 to be threadedly connected to the mounting port 13. By removing the cover plate 5, the impurities accumulated inside the valve body 1 can be cleaned out. Simultaneously, the adjusting block 32 on the sealing block 31 can be removed through the mounting port 13, facilitating subsequent disassembly and cleaning of the filter cartridge 33. This eliminates the need to disassemble the entire valve, resulting in high practicality.

[0032] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A shut-off valve, characterized in that, include: The valve body (1) is provided with a fluid passage (11) and a valve seat (12). Valve stem (2), which is movably mounted on valve body (1); The valve core assembly (3) includes a sealing block (31), an adjusting block (32), and a filter cartridge (33). The sealing block (31) is connected to the valve stem (2) to block the fluid passage (11). The adjusting block (32) is installed on the sealing block (31) and located at the fluid passage (11). The filter cartridge (33) is installed on the adjusting block (32). Control component (4), which is mounted on valve body (1) and is used to drive valve stem (2) to move; The regulating block (32) has an overflow channel (34), which has an inlet at the bottom of the regulating block (32) and an outlet on the periphery of the regulating block (32).

2. A shut-off valve according to claim 1, characterized in that, The filter cartridge (33) is mounted on the adjusting block (32) by means of fasteners.

3. A shut-off valve according to claim 1, characterized in that, The adjusting block (32) is provided with a threaded section (35), and the sealing block (31) is provided with a threaded hole. The threaded section (35) and the threaded hole are adapted to be connected.

4. A shut-off valve according to claim 1, characterized in that, The valve body (1) has an installation port (13), and a cover plate (5) for sealing the installation port (13) is installed at the installation port (13).

5. A shut-off valve according to claim 1, characterized in that, The liquid outlets are a number of them arranged in a ring array.

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