Flat gate valve with anti-jamming structure

Abstract

The utility model discloses a flat gate valve with prevent jamming structure, including flat gate valve body, both ends of flat gate valve body all are fixedly connected with first flange, and the first flange on flat gate valve body liquid inlet end is connected with filter box through a plurality of first screw, and the one end of filter box away from flat gate valve body is linked with liquid inlet pipe, and the first flange on flat gate valve body liquid inlet end is connected with filter box through a plurality of first screw, and the one end of filter box away from flat gate valve body is linked with liquid inlet pipe, and the first flange on flat gate valve body liquid inlet end is connected with filter box through a plurality of first screw, and the one end of filter box away from flat gate valve body is linked with liquid inlet pipe, and the first flange on flat gate valve body liquid inlet end is connected with filter box through a plurality of first screw, and the one end of filter box away from flat gate valve body is linked with liquid inlet pipe, and the first flange on flat gate valve body liquid inlet end is connected with filter box through a plurality of first screw, and the one end of filter box away from flat gate valve body is linked with liquid inlet pipe, and the first flange on flat gate valve body liquid inlet end is connected with filter box through a plurality of first screw, and the one end of filter box away from flat gate valve body is linked with liquid inlet pipe, and the first flange on flat gate valve body liquid entrance end is connected with filter box through a plurality of first screw, and the one end of filter chamber away from flat gate valve body is linked with liquid inlet pipe, and the first flange on the liquid inlet end of flat gate valve body is connected with filter box through a plurality of first screw, and the one end of filter box is communicated with liquid inlet pipe away from flat gate valve body, and the first flange is fixedly connected on liquid inlet pipe, and the inside of filter box is provided with two insertion slots on the side close to flat gate valve body, and the inside of two insertion slots is inserted with filter screen, and the top of filter box is connected with sealing cover through a plurality of second screws, and the bottom of filter box is provided with blanking opening, and the bottom of blanking opening is installed with miscellaneous box, avoid the impurity to enter to the inside of flat gate valve body, avoid the impurity to deposit in the inside of flat gate valve body

Description

Technical Field

[0001] This utility model relates to the field of flat gate valve technology, and more specifically, to a flat gate valve with an anti-jamming structure. Background Technology

[0002] A gate valve is a valve whose opening and closing element is a gate. The gate moves perpendicular to the direction of fluid flow. Gate valves can only be fully open or fully closed; they cannot be used for regulation or throttling. When a gate valve is closed, the sealing surface can rely solely on the pressure of the medium to seal. That is, the sealing surface of the gate is pressed against the valve seat on the other side by the medium pressure to ensure a seal. This is called self-sealing. A flat gate valve is a sliding valve with a parallel gate as its closing element. The gate and valve seat of a flat gate valve are tightly fitted together.

[0003] A search revealed that Chinese utility model patent application number CN202121630136.2 discloses a flat gate valve, comprising a valve body, a valve cover disposed on the valve body, a valve stem installed on the valve cover and extending into the valve body, and a gate plate installed on the valve stem and located within the valve body. The valve body is provided with a valve seat that cooperates with the gate plate to form a seal. The valve stem is provided with a rack, the length direction of which is parallel to the axial direction of the valve stem. The valve cover is provided with a gear that meshes with the rack and a handwheel for driving the gear to rotate. The valve cover or valve body is provided with a positioning component for positioning the valve stem and a control component for controlling the positioning component. When the positioning component positions the valve stem, the gate plate is separated from the valve seat and is in the open state.

[0004] The valve body has a groove at the bottom inside that matches the gate. During use, impurities in the liquid flowing inside the valve body will accumulate inside the groove. This can cause impurities to accumulate on the bottom side of the valve body. Too many impurities can cause blockage, making it difficult to move the gate to the bottom and preventing the flat gate valve from closing completely. Utility Model Content

[0005] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a flat gate valve with an anti-jamming structure to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a flat gate valve with an anti-jamming structure, comprising a flat gate valve body, both ends of which are fixedly connected to a first flange. A filter box is connected to the first flange at the liquid inlet end of the flat gate valve body via multiple first screws. The end of the filter box away from the flat gate valve body is connected to an inlet pipe, and a second flange is fixedly connected to the inlet pipe. Two slots are provided inside the filter box on the side closest to the flat gate valve body, and filter screens are inserted into the two slots. A sealing cover is connected to the top of the filter box via multiple second screws. A discharge port is provided at the bottom of the filter box, and a collection box is installed at the bottom of the discharge port to prevent impurities from entering the interior of the flat gate valve body, to prevent impurities from accumulating inside the flat gate valve body, to prevent jamming that would prevent the gate from moving to the bottom, and to prevent the flat gate valve from not closing completely.

[0007] The present invention is further configured such that a sealing base plate is fixedly connected to the bottom of the collection box by a plurality of third screws, so as to seal the bottom of the collection box.

[0008] The present invention is further configured such that two L-shaped plates are symmetrically fixedly connected to the filter box, and a sliding groove is formed between the two L-shaped plates and the filter box. A sealing plate is fixedly connected to the top of the impurity collection box, and the width of the sealing plate is greater than the width of the two impurity collection boxes. The impurity collection box is fixed to one side of the bottom end of the sealing plate. A first through groove is provided on the sealing plate at the position corresponding to the impurity collection box. A first sealing gasket is fixedly connected to the top of the sealing plate. A second through groove is provided on the first sealing gasket at the position corresponding to the first through groove, so as to facilitate pulling the impurity collection box to one side of the filter box and cleaning the impurities inside the impurity collection box during the process of liquid flowing through the valve.

[0009] The present invention is further configured such that each of the two L-shaped plates is threaded with a fourth screw that mates with the sealing plate, so that the first sealing gasket is in a tight abutment with the bottom of the filter box.

[0010] The present invention is further configured such that a fixing plate is fixedly connected to the bottom side of the filter box near the flat gate valve body, and the bottom end of the fixing plate contacts the top end of the first sealing gasket, so as to cover the first sealing gasket extending to the outside of the filter box and prevent the first sealing gasket from being exposed to the outside.

[0011] The present invention is further provided that a second sealing gasket is provided between the sealing base plate and the collection box to ensure the sealing performance between the sealing base plate and the collection box.

[0012] The present invention is further provided with a third sealing gasket between the first flange and the filter box and between the sealing cover and the filter box, to ensure the sealing of the connection between the first flange and the filter box and between the filter box and the sealing cover.

[0013] The present invention is further configured such that limiting plates are fixedly connected to both ends of the sealing plate, which limit the sealing plate and prevent the limiting plates from being pulled out from the inside of the two sliding grooves.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides a flat gate valve with an anti-jamming structure, which has the following advantages: 1. A filter box is connected to the inlet pipe of the flat gate valve body. A filter screen is installed inside the filter box. The filter screen intercepts impurities in the liquid flowing into the flat gate valve body, preventing impurities from entering the interior of the flat gate valve body, preventing impurities from accumulating inside the flat gate valve body, preventing jamming that would prevent the gate from moving to the bottom, and preventing the flat gate valve from not closing completely.

[0015] 2. When it is necessary to clean the impurities inside the collection box, loosen the fourth screw, and then pull the collection box to one side of the filter box. At this time, the sealing plate can still seal and cover the discharge port. Then tighten the fourth screw to make the sealing plate and the first sealing gasket press against the filter box and seal the discharge port. Then let the liquid flow inside the flat gate valve body. During this process, the inside of the collection box can be cleaned. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front structure of the flat gate valve with anti-jamming structure in this utility model; Figure 2 This is a bottom view schematic diagram of the flat gate with anti-jamming structure in this utility model; Figure 3 This is a structural diagram showing the connection between the flat gate valve body, filter box, and filter screen plate in this utility model. Figure 4 This is a bottom view of the structural connection of the flat gate valve body, filter box, filter screen plate and two L-shaped plates in this utility model. Figure 5 This is a structural diagram showing the connection between the sealing plate, the first sealing gasket, and the collection box in this utility model.

[0017] In the diagram: 1. Flat gate valve body; 2. First flange; 3. First screw; 4. Filter box; 5. Inlet pipe; 6. Second flange; 7. Slot; 8. Filter screen; 9. Second screw; 10. Sealing cover; 11. Discharge port; 12. Collection box; 13. Third screw; 14. Sealing base plate; 15. L-shaped plate; 16. Slide groove; 17. Sealing plate; 18. First through groove; 19. First sealing gasket; 20. Second through groove; 21. Fourth screw; 22. Fixing plate; 23. Second sealing gasket; 24. Third sealing gasket; 25. Limiting plate. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0020] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0021] Please see Figures 1-5 A flat gate valve with an anti-jamming structure includes a flat gate valve body 1. Both ends of the flat gate valve body 1 are fixedly connected to a first flange 2. A filter box 4 is connected to the first flange 2 at the liquid inlet end of the flat gate valve body 1 via multiple first screws 3. The end of the filter box 4 away from the flat gate valve body 1 is connected to an inlet pipe 5. A second flange 6 is fixedly connected to the inlet pipe 5. Two slots 7 are provided inside the filter box 4 on the side closest to the flat gate valve body 1. Filter screens 8 are inserted into the two slots 7. A sealing cap 10 is connected to the top of the filter box 4 via multiple second screws 9. A third sealing gasket 24 is provided between flange 2 and filter box 4 and between sealing cover 10 and filter box 4 to ensure the sealing of the connection between first flange 2 and filter box 4 and between filter box 4 and sealing cover 10. A discharge port 11 is provided at the bottom of filter box 4. A collection box 12 is installed at the bottom of discharge port 11. A sealing base plate 14 is fixedly connected to the bottom of collection box 12 by multiple third screws 13 to facilitate sealing the bottom of collection box 12. A second sealing gasket 23 is provided between sealing base plate 14 and collection box 12 to ensure the sealing of the connection between sealing base plate 14 and collection box 12.

[0022] Specifically, a filter box 4 is connected to the liquid inlet pipe 5 of the flat gate valve body 1, and a filter screen 8 is installed inside the filter box 4. The filter screen 8 intercepts impurities in the liquid flowing into the flat gate valve body 1, preventing impurities from entering the interior of the flat gate valve body 1, preventing impurities from accumulating inside the flat gate valve body 1, preventing jamming that would prevent the gate from moving to the bottom, and preventing the flat gate valve from not closing completely.

[0023] Please see Figure 1 , Figure 2 , Figure 4and Figure 5 Two L-shaped plates 15 are symmetrically fixedly connected to the filter box 4. A groove 16 is formed between each L-shaped plate 15 and the filter box 4. A sealing plate 17 is fixedly connected to the top of the collection box 12. Limiting plates 25 are fixedly connected to both ends of the sealing plate 17 to limit its movement and prevent it from being pulled out of the grooves 16. The width of the sealing plate 17 is greater than the width of the two collection boxes 12. The collection box 12 is fixed to one side of the bottom of the sealing plate 17. A first through groove 18 is provided on the sealing plate 17 at a position corresponding to the collection box 12. A first sealing gasket 19 is fixedly connected to the top of the sealing plate 17. A second through groove 20 is provided at the position corresponding to the first through groove 18, which facilitates pulling the impurity collection box 12 to one side of the filter box 4 and cleaning the impurities inside the impurity collection box 12 during the liquid flow process inside the valve. Both L-shaped plates 15 are threaded with a fourth screw 21 that cooperates with the sealing plate 17, which facilitates the first sealing gasket 19 to be in a tight state with the bottom end of the filter box 4. A fixing plate 22 is fixedly connected to the bottom side of the filter box 4 near the flat gate valve body 1. The bottom end of the fixing plate 22 contacts the top end of the first sealing gasket 19, which facilitates covering the first sealing gasket 19 that extends to the outside of the filter box 4 and prevents the first sealing gasket 19 from being exposed.

[0024] Specifically, when it is necessary to clean the impurities inside the collection box 12, loosen the fourth screw 21, and then pull the collection box 12 to one side of the filter box 4. At this time, the sealing plate 17 can still seal and cover the discharge port 11. Then tighten the fourth screw 21 so that the sealing plate 17 and the first sealing gasket 19 are pressed against the filter box 4 and the discharge port 11 is sealed. Then the liquid is allowed to flow inside the flat gate valve body 1. During this process, the inside of the collection box 12 can be cleaned.

[0025] In summary, when using the overall equipment: The flat gate valve is installed on the corresponding pipeline. The liquid first flows into the inside of the filter box 4 and then into the inside of the flat gate valve body 1. The impurities in the liquid are filtered by the filter screen plate 8 inside the filter box 4. The filtered impurities fall into the inside of the collection box 12 through the discharge port 11 and are collected by the collection box 12.

[0026] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flat gate valve with an anti-jamming structure, comprising a flat gate valve body (1), characterized in that: Both ends of the flat gate valve body (1) are fixedly connected to a first flange (2). A filter box (4) is connected to the first flange (2) at the liquid inlet end of the flat gate valve body (1) by a plurality of first screws (3). The end of the filter box (4) away from the flat gate valve body (1) is connected to a liquid inlet pipe (5). A second flange (6) is fixedly connected to the liquid inlet pipe (5). Two slots (7) are provided inside the filter box (4) on the side close to the flat gate valve body (1). Filter screens (8) are inserted into the two slots (7). A sealing cover (10) is connected to the top of the filter box (4) by a plurality of second screws (9). A discharge port (11) is provided at the bottom of the filter box (4). A collection box (12) is installed at the bottom of the discharge port (11).

2. The flat gate valve with anti-jamming structure according to claim 1, characterized in that: The bottom of the collection box (12) is fixedly connected to a sealing base plate (14) by a plurality of third screws (13).

3. The flat gate valve with anti-jamming structure according to claim 1, characterized in that: Two L-shaped plates (15) are symmetrically fixedly connected to the filter box (4). A sliding groove (16) is formed between the two L-shaped plates (15) and the filter box (4). A sealing plate (17) is fixedly connected to the top of the collection box (12). The width of the sealing plate (17) is greater than the width of the two collection boxes (12). The collection box (12) is fixed to one side of the bottom end of the sealing plate (17). A first through groove (18) is provided on the sealing plate (17) at the position corresponding to the collection box (12). A first sealing gasket (19) is fixedly connected to the top of the sealing plate (17). A second through groove (20) is provided on the first sealing gasket (19) at the position corresponding to the first through groove (18).

4. The flat gate valve with anti-jamming structure according to claim 3, characterized in that: Both L-shaped plates (15) are threaded with a fourth screw (21) that mates with the sealing plate (17).

5. The flat gate valve with anti-jamming structure according to claim 4, characterized in that: The filter box (4) is fixedly connected to a fixing plate (22) on the bottom side near the flat gate valve body (1), and the bottom end of the fixing plate (22) is in contact with the top end of the first sealing gasket (19).

6. The flat gate valve with anti-jamming structure according to claim 2, characterized in that: A second sealing gasket (23) is provided between the sealing base plate (14) and the collection box (12).

7. The flat gate valve with anti-jamming structure according to claim 1, characterized in that: A third sealing gasket (24) is provided between the first flange (2) and the filter box (4) and between the sealing cover (10) and the filter box (4).

8. The flat gate valve with anti-jamming structure according to claim 3, characterized in that: Limiting plates (25) are fixedly connected to both ends of the sealing plate (17).

Images