Filter baffle of gate valve

Abstract

The utility model discloses a filter baffle of a gate valve, which relates to the field of gate valves and comprises a flange, a plurality of through holes are arranged on the surface of one side of the flange, an outer ring is fixedly connected to the center of the other side of the flange, an inner ring is arranged on the inner side of the outer ring, and a filter screen cylinder is arranged between the inner ring and the outer ring. The inner ring and the outer ring are both in a grating cylinder shape, a gap between the inner ring and the outer ring is adaptively matched with the filter screen cylinder, an external thread part is arranged at one end of the outer surface of the inner ring, an internal thread part is arranged at one end of the inner surface of the outer ring, and the external thread part is in threaded connection with the internal thread part. According to the filtering baffle of the gate valve, the mode that the gate valve and the water pipe are connected through the flange is adopted, compared with a traditional mode that a gate valve in a specific shape needs to be additionally arranged, the universality is better, the internal structure of the gate valve does not need to be changed, later-stage additional installation is facilitated, the filtering net cylinder is of a cylindrical structure, the filtering area is larger, and the medium flowability is better.

Description

Technical Field

[0001] The utility model relates to the field of gate valves, in particular to a filtering baffle of a gate valve. Background Art

[0002] A gate valve is a valve that opens and closes by vertical lifting, similar to the working method of a gate, so it is called a gate valve. It is a common tool used in water conservancy systems to control the flow of media. Due to the presence of impurities in the media, a filter baffle is usually installed at the water inlet end of the gate valve during use.

[0003] Chinese patent publication number CN220622795U provides a gate valve with a filter baffle, comprising a first pipe, a second pipe and a third pipe fixed to the left and right sides of the first pipe, respectively, a connecting block fixed to the top of the first pipe, a fixed disc fixed to the outer surface of each of the first pipe and the connecting block, a threaded rod inserted into the interior of the two fixed discs, a nut threadedly connected to the outer surface of the threaded rod located on the opposite side of the two fixed discs, a fixed block fixed to the top of the connecting block, and a fixed bearing fixed to the top of the fixed block. When the filter screen needs to be installed in the gate valve with a filter baffle, the filter screen is fixed to a disassembly assembly, and the disassembly assembly is placed into the second pipe. At this time, the disassembly assembly has a certain elasticity, which allows the disassembly assembly to retract. The simple structure of the device allows for convenient and effective removal of the filter screen, reducing the workload of the staff.

[0004] However, the existing gate valve filter baffle is difficult to disassemble during use. The filter baffle of the gate valve in the above-mentioned comparative document requires a specific gate valve body, a corresponding installation groove needs to be set in the gate valve body, or the gate valve needs to be additionally processed before it can be used. It has poor versatility and is inconvenient to disassemble and assemble. Utility Model Content

[0005] The main purpose of the utility model is to provide a filter baffle for a gate valve, which can effectively solve the technical problems in the background technology that the traditional gate valve filter baffle requires a specific gate valve body, a corresponding installation groove needs to be set in the gate valve body, or the gate valve needs to be additionally processed before it can be used, has poor versatility, and is inconvenient to disassemble and assemble.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A filter baffle for a gate valve includes a flange, a surface of one side of the flange is provided with a plurality of through holes, and an outer ring is fixedly connected to the center position of the other side of the flange, an inner ring is provided on the inner side of the outer ring, and a filter mesh cylinder is provided between the inner ring and the outer ring.

[0008] As a further solution of the present invention, the inner ring and the outer ring are both in the shape of a grid cylinder, and the gap between the inner ring and the outer ring is adaptively matched with the filter cylinder.

[0009] As a further solution of the present invention, an external threaded portion is provided at one end of the outer surface of the inner ring, and an internal threaded portion is provided at one end of the inner surface of the outer ring, and the external threaded portion is threadedly connected to the internal threaded portion.

[0010] As a further solution of the present invention, two sealing grooves are provided on the front and rear surfaces of the flange, a first sealing ring and a second sealing ring are embedded in the two sealing grooves respectively, and the cross-section of the sealing grooves is semicircular.

[0011] As a further solution of the present invention, a bracket is fixedly installed on the inner side of the inner ring near the front end, and a bracket is also fixedly installed on the inner side of the outer ring near the rear end.

[0012] As a further solution of the present invention, the connection between the flange and the inner ring is conical.

[0013] The beneficial effects of the utility model are as follows:

[0014] By setting a flange to match the outer ring, the flange is connected to the gate valve and the water pipe. Compared with the traditional method that requires the additional setting of a gate valve of a specific shape, it is more versatile and does not require changing the internal structure of the gate valve, which is convenient for later installation. The filter cylinder has a cylindrical structure, with a larger filtration area and better medium fluidity.

[0015] By setting an inner ring to cooperate with the outer ring, the inner ring and the outer ring are connected by a threaded connection, which is convenient for dismantling during later maintenance, so as to remove the filter cylinder. On the one hand, it improves the smoothness and convenience of cleaning of the filter cylinder, and the inner ring and the outer ring form effective support for the inner and outer sides of the filter cylinder, avoiding the filter cylinder from being compressed and deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a filter baffle of a gate valve of the present invention;

[0017] Figure 2 This is a rear perspective view of a filter baffle of a gate valve according to the present invention;

[0018] Figure 3 This is a cross-sectional view of the water inlet end of a gate valve of the utility model, which includes a filter baffle.

[0019] Figure 4 This utility model is a filter baffle of a gate valve Figure 3 Rear view;

[0020] Figure 5This utility model is a filter baffle of a gate valve Figure 2 Exploded view of the middle flange, inner ring, and outer ring;

[0021] Figure 6 This utility model is a filter baffle of a gate valve Figure 1 Disassembled diagram of the middle flange, inner ring and outer ring.

[0022] In the figure: 1. Gate valve; 2. Flange; 3. Through hole; 4. First sealing ring; 5. Inner ring; 6. Filter cylinder; 7. Outer ring; 8. Second sealing ring; 9. External threaded portion; 10. Internal threaded portion. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] Combine Figures 1-6 A filter baffle of a gate valve includes a flange 2, a plurality of through holes 3 are opened on the surface of one side of the flange 2, and an outer ring 7 is fixedly connected to the center position of the other side of the flange 2, an inner ring 5 is provided on the inner side of the outer ring 7, and a filter mesh cylinder 6 is provided between the inner ring 5 and the outer ring 7.

[0026] See Figure 1 and Figure 4 It is further obtained that the inner ring 5 and the outer ring 7 are both in the shape of a grid cylinder, and the gap between the inner ring 5 and the outer ring 7 is adaptively matched with the filter mesh cylinder 6, an external threaded portion 9 is provided at one end of the outer surface of the inner ring 5, and an internal threaded portion 10 is provided at one end of the inner surface of the outer ring 7, and the external threaded portion 9 is threadedly connected to the internal threaded portion 10.

[0027] Specifically, through the several through holes 3 on the surface of the flange 2, when installing the entire filter baffle, the flange 2 is aligned with the flange at the water inlet end of the gate valve 1, and then connected to the flange of the external pipe through external bolts. The installation is convenient and quick, and there is no need to set a specific installation position in the gate valve body. The filter screen cartridge 6 is arranged between the inner ring 5 and the outer ring 7, and the inner ring 5 and the outer ring 7 are threadedly connected through the external threaded portion 9 and the internal threaded portion 10. When disassembling, the inner ring 5 is rotated to separate it from the outer ring 7, and the filter screen cartridge 6 can be removed for cleaning and replacement.

[0028] Example 2

[0029] See Figure 5 and Figure 6 On the basis of Example 1, it is further obtained that two sealing grooves are provided on the front and rear surfaces of the flange 2, and the first sealing ring 4 and the second sealing ring 8 are embedded in the interior of the two sealing grooves respectively, and the cross-section of the sealing groove is set to be semicircular, and a bracket is fixedly installed at the front end position of the inner ring 5, and a bracket is also fixedly installed at the rear end position of the inner side of the outer ring 7, and the connection between the flange 2 and the inner ring 5 is set to be conical.

[0030] Specifically, the two sets of first sealing rings 4 and second sealing rings 8 can be deformed under pressure to increase the sealing performance of the connection between the flange 2 and the water inlet end of the gate valve 1 and the external water pipe, and the tapered connection can play a better guiding role.

[0031] It should be noted that the utility model is a filter baffle of a gate valve. When in use, the flange 2 is aligned with the flange mouth of the water inlet end of the gate valve 1. At this time, the outer ring 7 is inserted into the inside of the water inlet end of the gate valve 1, and then the flange of the external water pipe is aligned with the flange 2, and the connection is tightened with bolts. During the connection process, the two sets of first sealing rings 4 and second sealing rings 8 are compressed and deformed, which effectively increases the sealing between the flange 2, the gate valve 1 and the water pipe. When the medium enters the gate valve 1 through the water pipe, the medium will pass through the filter screen cylinder 6, and the debris can be filtered out by the filter screen cylinder 6. In later maintenance, after the connected bolts are removed, the flange 2 can be taken out. After removal, the inner ring 5 is rotated, and the external threaded portion 9 of the inner ring 5 is separated from the internal threaded portion 10 of the outer ring 7. After separation, the inner ring 5 and the filter screen cylinder 6 can be taken out, which is convenient for replacing and cleaning the filter screen cylinder 6.

[0032] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A filter baffle for a gate valve, comprising a flange (2), characterized in that: A plurality of through holes (3) are provided on the surface of one side of the flange (2), and an outer ring (7) is fixedly connected to the center position of the other side of the flange (2). An inner ring (5) is provided on the inner side of the outer ring (7), and a filter screen cylinder (6) is provided between the inner ring (5) and the outer ring (7).

2. The filter baffle of a gate valve according to claim 1, characterized in that: The inner ring (5) and the outer ring (7) are both in the shape of a grid cylinder, and the gap between the inner ring (5) and the outer ring (7) is adaptively matched with the filter cylinder (6).

3. The filter baffle of a gate valve according to claim 1, characterized in that: An external threaded portion (9) is provided at one end of the outer surface of the inner ring (5), and an internal threaded portion (10) is provided at one end of the inner surface of the outer ring (7), and the external threaded portion (9) and the internal threaded portion (10) are threadedly connected.

4. The filter baffle of a gate valve according to claim 1, characterized in that: The front surface and the rear surface of the flange (2) are both provided with two sealing grooves, a first sealing ring (4) and a second sealing ring (8) are embedded in the two sealing grooves respectively, and the cross-section of the sealing grooves is semicircular.

5. The filter baffle of a gate valve according to claim 1, characterized in that: A bracket is fixedly installed on the inner side of the inner ring (5) at the front end, and a bracket is also fixedly installed on the inner side of the outer ring (7) at the rear end.

6. The filter baffle of a gate valve according to claim 1, characterized in that: The connection between the flange (2) and the inner ring (5) is arranged in a conical shape.

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