Valve cover structure of a stop valve

Abstract

The utility model relates to the technical field of stop valve, the utility model discloses a valve cover structure of stop valve, include: upper installation part, set up the lower installation part below upper installation part, support part is set to two, and symmetrically sets up, and support part is installed between upper installation part and lower installation part, lower thread installation groove is set up in the lower surface of lower installation part, and the lower thread installation groove's top inner wall is reserved with lower installation through -hole, upper installation groove is located the direct upper of lower installation through -hole, and set up in the lower surface of upper installation part, and the top inner wall of upper installation groove is reserved with upper thread installation hole, the utility model discloses through expansion joint, threaded hole and adjusting screw cooperate, and expansion joint is linked with lower thread installation groove and lower installation through -hole simultaneously, make through the expansion joint of adjusting big, come convenient lower installation part installs or dismounts on the valve body, also can adjust small expansion joint, to guarantee the installation sealing property between lower installation part and the sealing assembly on the valve.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically to a gate valve cover structure. Background Technology

[0002] Gate valves, also known as shut-off valves, are a type of forced-seal valve. Therefore, when the valve is closed, pressure must be applied to the valve stem to force a leak-proof seal. Gate valves are suitable for high-temperature and high-pressure steam, chemicals, solvents, acids, gases, and corrosive fluids. They can also be used in high-purity systems, chemical processing, instrumentation, drain valves or vent shut-off valves, instrument isolation, hydraulic systems, pneumatic systems, sampling, test benches, and feed pipelines.

[0003] A gate valve generally includes a valve body, a valve cover mounted on the valve body, and a valve stem. The valve cover in a traditional gate valve is inconvenient to install. Based on this, we propose a valve cover structure for a gate valve. Utility Model Content

[0004] The purpose of this utility model is to provide a valve cover structure for a shut-off valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a valve cover structure for a shut-off valve, comprising: an upper mounting portion and a lower mounting portion disposed below the upper mounting portion;

[0006] The support is provided in two parts, which are arranged symmetrically and are installed between the upper mounting part and the lower mounting part;

[0007] The lower thread mounting groove is formed on the lower surface of the lower mounting part, and a lower mounting through hole is reserved on the top inner wall of the lower thread mounting groove;

[0008] The upper mounting groove is located directly above the lower mounting through hole and is opened on the lower surface of the upper mounting part. The upper mounting groove has a threaded mounting hole pre-drilled on the top inner wall.

[0009] Preferably, the upper mounting part, the lower mounting part, and the two symmetrical support parts are integrally machined from martensitic stainless steel.

[0010] Preferably, the support portion is configured with an arc-shaped structure, and the bottom of the support portion is connected to both the upper surface and the side surface of the lower mounting portion.

[0011] Preferably, the upper surface, side surface and lower surface of the lower mounting part are provided with the same expansion joint, and the expansion joint is connected to both the lower threaded mounting groove and the lower mounting through hole. An adjusting screw for adjusting the size of the expansion joint is installed on the lower mounting part.

[0012] Preferably, a threaded hole that engages with the threaded adjusting screw is reserved on the inner wall of both sides of the expansion joint.

[0013] Preferably, the outer sides of both the upper mounting portion and the lower mounting portion are cylindrical structures.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The valve cover structure of this gate valve is designed with an expansion joint, a threaded hole, and an adjusting screw. The expansion joint is connected to both the lower threaded mounting groove and the lower mounting through hole. This allows for easy installation or removal of the lower mounting part on the valve body by increasing the expansion joint size, or to ensure a tight seal between the lower mounting part and the sealing components on the valve by decreasing the expansion joint size. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a bottom view of the structure of this utility model;

[0019] Figure 4 For the present utility model Figure 1 A structural diagram from another perspective.

[0020] In the diagram: 100, upper mounting part; 1001, upper threaded mounting hole; 1002, upper mounting groove; 1003, rounded chamfer; 101, support part; 102, lower mounting part; 1021, lower threaded mounting groove; 1022, lower mounting through hole; 1023, expansion joint; 1024, threaded hole; 1025, adjusting screw. Detailed Implementation

[0021] 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.

[0022] Example 1

[0023] like Figure 1 As shown, the valve cover structure of the shut-off valve proposed in this embodiment includes: an upper mounting part 100 and a lower mounting part 102 disposed below the upper mounting part 100;

[0024] In this implementation plan: In order to solve the technical problems existing in the prior art, such as the "gate valve generally includes a valve body, a valve cover and a valve stem installed on the valve body, and the valve cover in the traditional gate valve has the defect of inconvenient installation on the valve body", in combination with the use, this problem is obviously a real and relatively difficult problem to solve.

[0025] Furthermore:

[0026] like Figures 1 to 4 As shown, the valve cover structure of the shut-off valve proposed in this embodiment further includes:

[0027] The support part 101 is provided in two symmetrical configurations and is installed between the upper mounting part 100 and the lower mounting part 102. The connection between the upper surface and the side surface of the support part 101 is provided with an arc-shaped chamfer 1003. The upper mounting part 100, the lower mounting part 102 and the two symmetrical support parts 101 are integrally machined from martensitic stainless steel. The support part 101 has an arc-shaped structure and is used to connect the upper mounting part 100 and the lower mounting part 102. The bottom of the support part 101 is connected to both the upper surface and the side surface of the lower mounting part 102, which makes the connection between the support part 101 and the lower mounting part 102 highly stable. The outer sides of the upper mounting part 100 and the lower mounting part 102 are both cylindrical structures.

[0028] The lower threaded mounting groove 1021 is formed on the lower surface of the lower mounting part 102. The lower mounting part 102 is threadedly fixed to the valve body by forming the lower threaded mounting groove 1021 at the bottom of the lower mounting part 102. The lower mounting through hole 1022 is reserved on the top inner wall of the lower threaded mounting groove 1021. The lower mounting through hole 1022 is provided for installing the sealing component on the valve stem.

[0029] The upper mounting groove 1002 is located directly above the lower mounting through hole 1022 and is opened on the lower surface of the upper mounting part 100. The upper mounting groove 1002 has a threaded mounting hole 1001 pre-reserved on the top inner wall. The upper mounting groove 1002 is used to install the spring on the valve stem, and the threaded mounting hole 1001 is used to thread the valve stem.

[0030] Example 2

[0031] Reference Figure 1-4The difference between this embodiment and Embodiment 1 is that the upper, side, and lower surfaces of the lower mounting part 102 are provided with the same expansion joint 1023, and the expansion joint 1023 is simultaneously connected to the lower threaded mounting groove 1021 and the lower mounting through hole 1022. An adjusting screw 1025 for adjusting the size of the expansion joint 1023 is installed on the lower mounting part 102. A threaded hole 1024 for threaded engagement with the adjusting screw 1025 is reserved on both inner walls of the expansion joint 1023. Through the cooperation of the expansion joint 1023, the threaded hole 1024, and the adjusting screw 1025, and the simultaneous connection of the expansion joint 1023 to the lower threaded mounting groove 1021 and the lower mounting through hole 1022, the lower mounting part 102 can be easily installed or removed from the valve body by increasing the expansion joint 1023, or the expansion joint 1023 can be decreased to ensure the sealing performance between the lower mounting part 102 and the sealing components on the valve.

[0032] The method of using this utility model is as follows: A lower threaded mounting groove 1021 is opened at the bottom of the lower mounting part 102 for threading the lower mounting part 102 onto the valve body. The lower mounting through hole 1022 is provided for installing the sealing component on the valve stem. The upper mounting groove 1002 is used for installing the spring on the valve stem. The upper threaded mounting hole 1001 is used for threaded engagement with the valve stem. In addition, the expansion joint 1023, the threaded hole 1024 and the adjusting screw 1025 cooperate, and the expansion joint 1023 is connected to both the lower threaded mounting groove 1021 and the lower mounting through hole 1022. This allows the lower mounting part 102 to be installed or removed from the valve body by increasing the expansion joint 1023, and the expansion joint 1023 can be decreased to ensure the sealing performance between the lower mounting part 102 and the sealing component on the valve.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A valve cover structure for a gate valve, characterized in that, include: Upper mounting part (100), and lower mounting part (102) provided below the upper mounting part (100). The support part (101) is provided in two symmetrical arrangements, and the support part (101) is installed between the upper mounting part (100) and the lower mounting part (102); The lower threaded mounting groove (1021) is opened on the lower surface of the lower mounting part (102), and a lower mounting through hole (1022) is reserved on the top inner wall of the lower threaded mounting groove (1021). The upper mounting groove (1002) is located directly above the lower mounting through hole (1022) and is opened on the lower surface of the upper mounting part (100). The upper mounting groove (1002) has a threaded mounting hole (1001) pre-reserved on the top inner wall.

2. The valve cover structure of a stop valve according to claim 1, characterized in that: The upper mounting part (100), the lower mounting part (102), and the two symmetrical support parts (101) are integrally machined from martensitic stainless steel.

3. The valve cover structure of a stop valve according to claim 2, characterized in that: The support part (101) is designed with an arc shape, and the bottom of the support part (101) is connected to the upper surface and side surface of the lower mounting part (102).

4. The valve cover structure of a stop valve according to claim 3, characterized in that: The upper, side and lower surfaces of the lower mounting part (102) are provided with the same expansion joint (1023), and the expansion joint (1023) is connected to the lower threaded mounting groove (1021) and the lower mounting through hole (1022). An adjusting screw (1025) for adjusting the size of the expansion joint (1023) is installed on the lower mounting part (102).

5. The valve cover structure of a stop valve according to claim 4, characterized in that: The expansion joint (1023) has a threaded hole (1024) on each of its inner walls that engages with the threaded adjustment screw (1025).

6. The valve cover structure of a stop valve according to claim 1, characterized in that: The outer sides of both the upper mounting part (100) and the lower mounting part (102) are cylindrical structures.

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