Diaphragm valve sealing structure

Abstract

The utility model belongs to the technical field of diaphragm valves, and discloses a diaphragm valve sealing structure which comprises a valve body, a valve chamber is arranged on the outer side of the valve body, an air cylinder is connected to the upper portion of the valve chamber, the output end of the air cylinder is in transmission connection with a valve rod, a mounting block is fixedly connected to the outer side of the valve rod, and moving rods are movably connected to the two sides of the mounting block. Filter plates are fixedly connected to the lower portions of the fixing blocks, filter holes are formed in the filter plates, springs are movably connected to the ends, close to the interior of the valve chamber, of the filter plates, the air cylinder is used for driving the valve rod to move up and down, and then moving rods sleeving the left side and the right side of the mounting block on the outer side of the valve rod are driven to move left and right in a notch in the valve body; when the movable rod moves left and right, the filter plate installed below the movable rod is driven to move towards the two sides, fluid passes through the interior of the valve body and then passes through the filter holes to clean impurities in the valve body, the loss of an engine caused by the fact that the impurities enter a mechanical body is reduced to a certain extent, and the service life of the whole device is prolonged.

Description

Technical Field

[0001] This application relates to the field of diaphragm valve technology, and more specifically, to a diaphragm valve sealing structure. Background Technology

[0002] A diaphragm valve is a shut-off valve that uses a diaphragm as the opening and closing element to close the flow channel, cut off the fluid, and separate the valve body cavity from the valve cover cavity. Its main function is to cut off the fluid and, through its special structure, ensure the purity of the fluid and prevent media leakage. The fluid connects the mechanical body to the oil supply equipment through the diaphragm valve.

[0003] Currently available diaphragm valves, while maintaining structural sealing, are susceptible to impurities being transported from the oil supply equipment into the main body of the machine. For example, Chinese patent (authorization announcement number CN214404779U) discloses a diaphragm valve with a sealing structure, including a sealing assembly, a valve body assembly, and a handwheel. The sealing assembly includes a first sealing ring, a second sealing ring, and a transparent cover. The valve body assembly includes a valve body with an internal cavity and a valve body nut. The valve body has an internal cavity, and the valve body nut is rotatably connected to the valve body. The handwheel includes a wheel portion for rotation control, with an annular sealing ring portion on the inner side of the wheel portion. The lower inner wall of the sealing ring portion has an annular first sealing ring groove. The sealing ring portion of the handwheel is positioned at the center of the upper end face of the valve body nut. The first sealing ring is located within the first sealing ring groove of the sealing ring portion of the handwheel, between the sealing ring portion of the handwheel and the uppermost neck of the valve body nut. The transparent cover is inserted from above onto the handwheel, and the second sealing ring is located between the transparent cover and the handwheel. This diaphragm valve with a sealing structure provides better sealing performance.

[0004] Regarding the aforementioned technologies, the inventors believe that when fluid is transported from the oil supply equipment to the mechanical body through a diaphragm valve, there may be some impurities in the fluid stored in the oil supply equipment. If these impurities enter the mechanical body, they may damage the device's engine and affect the overall service life of the device. Utility Model Content

[0005] To address the aforementioned issues, this application provides a diaphragm valve sealing structure.

[0006] The diaphragm valve sealing structure provided in this application adopts the following technical solution:

[0007] A diaphragm valve sealing structure includes a valve body, a valve chamber on the outer side of the valve body, a cylinder connected above the valve chamber, a valve stem drivenly connected to the output end of the cylinder, a mounting block fixedly connected to the outer side of the valve stem, movable rods movably connected to both sides of the mounting block, a fixing block fixedly connected to the other end of each movable rod, a filter plate fixedly connected below each fixing block, filter holes opened inside the filter plate, and a spring movably connected to one end of the filter plate near the inside of the valve chamber.

[0008] Furthermore, the valve chamber has an internal cavity, and the valve stem is disposed in the cavity.

[0009] Through the above technical solution, by utilizing the cavity opened inside the valve chamber, the cylinder can drive the valve stem to move up and down inside the cavity, thereby controlling the fluid entering the valve body through the up and down movement of the valve stem.

[0010] Furthermore, a slot is formed on the upper surface of the valve body, the moving rod is disposed in the slot, and a partition is provided inside the valve body.

[0011] Through the above technical solution, the partition can divide the valve body into two parts, and the moving rod is set in the groove opened on the upper surface of the valve body. The groove can limit the moving rod and minimize the positional deviation of the moving rod during left and right movement.

[0012] Furthermore, a connecting plate is provided inside the valve chamber, and a connecting pipe is opened inside the connecting plate. The other end of the spring is fixedly installed on the connecting plate.

[0013] Through the above technical solution, the connecting plate can fix the left and right sides of the spring, and when the fluid passes through the upper side of the valve body, it can pass through the connecting pipe to the left and right sides of the upper part of the valve body.

[0014] Furthermore, both sides of the filter plate are provided with rotating wheels that are movably connected to the bottom inner wall of the valve chamber, and both the fixing block and the filter plate are made of hydrogenated nitrile rubber.

[0015] The above technical solution utilizes a cylinder to drive the valve stem to move up and down, which in turn drives the moving rods on the left and right sides of the mounting block on the outside of the valve stem to move left and right in the slot inside the valve body. As the moving rods move left and right, they also drive the filter plate installed below them to move to both sides. The filter plate is provided with filter holes. After the fluid passes through the inside of the valve body, it passes through the filter holes, thereby cleaning the impurities in the fluid.

[0016] Furthermore, the partition plate has a flow outlet, and the filter plate is positioned directly above the flow outlet.

[0017] Through the above technical solution, the fluid filtered by the baffle can enter the lower pipe of the valve body through the inlet.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] The cylinder drives the valve stem to move up and down, which in turn drives the moving rods on both sides of the mounting block on the outside of the valve stem to move left and right in the groove inside the valve body. As the moving rods move left and right, they also drive the filter plate installed below them to move to both sides. The filter plate is provided with filter holes. After the fluid passes through the inside of the valve body, it passes through the filter holes, which helps to clean the impurities in the fluid. This reduces the wear and tear on the device's engine caused by impurities entering the mechanical body and improves the overall service life of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a diaphragm valve sealing structure;

[0021] Figure 2 This is a schematic diagram of the internal structure of this application;

[0022] Figure 3 This is a schematic diagram showing the positional relationship between the filter plate and the connecting plate in this application.

[0023] Explanation of the labels in the diagram:

[0024] 1. Valve body; 2. Valve chamber; 3. Cylinder; 4. Valve stem; 5. Mounting block; 6. Moving rod; 7. Fixing block; 8. Filter plate; 9. Filter hole; 10. Spring; 11. Partition plate; 12. Connecting plate; 13. Drain port. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Example 1:

[0029] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0030] This application discloses a diaphragm valve sealing structure. Please refer to [link / reference]. Figure 1 The system includes a valve body 1, a valve chamber 2 on the outside of the valve body 1, a cylinder 3 connected above the valve chamber 2, a valve stem 4 connected to the output end of the cylinder 3, a mounting block 5 fixedly connected to the outside of the valve stem 4, a moving rod 6 movably connected to both sides of the mounting block 5, a fixing block 7 fixedly connected to the other end of the moving rod 6, a filter plate 8 fixedly connected to the bottom of the fixing block 7, filter holes 9 opened inside the filter plate 8, and a spring 10 movably connected to one end of the filter plate 8 near the inside of the valve chamber 2.

[0031] The valve chamber 2 has an internal cavity, and the valve stem 4 is installed in the cavity. Utilizing the cavity inside the valve chamber 2, the cylinder 3 can drive the valve stem 4 to move up and down inside the cavity. The up and down movement of the valve stem 4 controls the flow of fluid into the valve body 1.

[0032] A slot is opened on the upper surface of the valve body 1, and the moving rod 6 is set in the slot. A partition 11 is provided inside the valve body 1, which can divide the valve body 1 into two parts. The moving rod 6 is set in the slot opened on the upper surface of the valve body 1. The slot can limit the moving rod 6 and minimize the positional deviation of the moving rod 6 during left and right movement.

[0033] A connecting plate 12 is provided inside the valve chamber 2. A connecting pipe is provided inside the connecting plate 12. The other end of the spring 10 is fixedly installed on the connecting plate 12. The connecting plate 12 can fix the left and right sides of the spring 10. When the fluid passes through the upper side of the valve body 1, it can pass through the connecting pipe to the left and right sides of the upper part of the valve body 1.

[0034] Furthermore, the cylinder 3 drives the valve stem 4 to move up and down, which in turn drives the moving rods 6 on the left and right sides of the mounting block 5 on the outside of the valve stem 4 to move left and right in the groove inside the valve body 1. As the moving rods 6 move left and right, they also drive the filter plate 8 installed below it to move to both sides. The filter plate 8 is provided with filter holes 9. After the fluid passes through the inside of the valve body 1, it passes through the filter holes 9 to clean the impurities in the fluid.

[0035] Furthermore, the partition 11 has a flow inlet 13, and the filter plate 8 is located directly above the flow inlet 13. The fluid filtered by the partition 11 can enter the lower pipe of the valve body 1 through the flow inlet 13.

[0036] The implementation principle of the diaphragm valve sealing structure in this application embodiment is as follows: the cylinder 3 drives the valve stem 4 to move up and down, which in turn drives the moving rods 6 on both sides of the mounting block 5 on the outside of the valve stem 4 to move left and right in the groove inside the valve body 1. While the moving rods 6 move left and right, they also drive the filter plate 8 installed below them to move to both sides. The filter plate 8 is provided with filter holes 9. After the fluid passes through the inside of the valve body 1, it passes through the filter holes 9 to clean the impurities in the fluid, which to a certain extent reduces the wear and tear on the device engine caused by impurities entering the mechanical body and improves the overall service life of the device.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A diaphragm valve sealing structure, comprising a valve body (1), characterized in that: A valve chamber (2) is provided on the outside of the valve body (1). A cylinder (3) is connected above the valve chamber (2). A valve stem (4) is connected to the output end of the cylinder (3). A mounting block (5) is fixedly connected to the outside of the valve stem (4). A moving rod (6) is movably connected to both sides of the mounting block (5). A fixing block (7) is fixedly connected to the other end of the moving rod (6). A filter plate (8) is fixedly connected to the bottom of the fixing block (7). A filter hole (9) is opened inside the filter plate (8). A spring (10) is movably connected to one end of the filter plate (8) near the inside of the valve chamber (2).

2. The diaphragm valve sealing structure according to claim 1, characterized in that: The valve chamber (2) has an internal cavity, and the valve stem (4) is disposed in the cavity.

3. The diaphragm valve sealing structure according to claim 1, characterized in that: The valve body (1) has a slot on its upper surface, the moving rod (6) is disposed in the slot, and a partition (11) is disposed inside the valve body (1).

4. The diaphragm valve sealing structure according to claim 1, characterized in that: The valve chamber (2) is provided with a connecting plate (12), and a connecting pipe is provided inside the connecting plate (12). The other end of the spring (10) is fixedly installed on the connecting plate (12).

5. The diaphragm valve sealing structure according to claim 1, characterized in that: Both sides of the filter plate (8) are provided with rotating wheels that are movably connected to the bottom inner wall of the valve chamber (2). The fixed block (7) and the filter plate (8) are both made of hydrogenated nitrile rubber.

6. The diaphragm valve sealing structure according to claim 1, characterized in that: The partition (11) has a flow inlet (13), and the filter plate (8) is located directly above the flow inlet (13).

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