Butterfly valve with filter screen convenient to disassemble

Abstract

The utility model relates to the field of butterfly valves, and discloses a butterfly valve with a filter screen convenient to dismantle, which comprises a valve body, the two ends of the valve body are respectively and fixedly connected with a third connecting flange, one side of the valve body is provided with a filter assembly, and the two ends of the filter assembly are respectively and fixedly connected with a first connecting flange and a second connecting flange. The second connecting flange and one end of one of the third connecting flanges are fixedly mounted through a plurality of fastening bolts, and the device is convenient to process, produce and assemble while the filter structure is convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the field of butterfly valves, in particular to a butterfly valve which is convenient for removing a filter screen. Background Art

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve features a disc-shaped closing element (disc or disc) that rotates around the valve axis to open and close. The valve can be used to control the flow of various fluids, including air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media. It primarily serves to cut off and throttle flow in pipelines. The opening and closing element of a butterfly valve is a disc-shaped disc that rotates around its own axis within the valve body, achieving the purpose of opening, closing, or regulating the flow.

[0003] The utility model disclosed by the publication (announcement) number CN221683628U discloses a butterfly valve which is convenient for removing the filter screen. The key points of its technical solution are that it includes a valve body, a butterfly plate positioned in the inner cavity of the valve body, and a filter screen located on one side of the butterfly plate, wherein the outer wall of the valve body is provided with an arc-shaped plug-in groove which is connected to the inner cavity and has two first lugs located at both ends of the plug-in groove, wherein the plug-in groove is coaxial with the valve body, the cross-section of the plug-in groove in the circumferential direction of the valve body is countersunk and the small end is connected to the inner cavity of the valve body, and further includes a side cover matching the plug-in groove, the two ends of the side cover are provided with second lugs which can be fixedly connected to the lugs by bolts, and a clamping ring for clamping the filter screen is provided on the inner wall of the side cover facing the inner cavity of the valve body, which solves the problems of cumbersome replacement of the filter screen and leakage between the valve body and the pipeline in the prior art.

[0004] The butterfly valve of the above-mentioned utility model is provided with a filter mesh structure that is easy to remove inside, so as to facilitate the filtering process of the water flow. However, the filter mesh structure is provided inside the butterfly valve, which increases the difficulty of the production and processing process. It is necessary to open a groove inside the butterfly valve, which reduces the overall stability of the butterfly valve. At the same time, when the filter structure is damaged after being used for a period of time, the butterfly valve structure cannot be used normally, and a new filter structure must be replaced and installed before the butterfly valve can continue to be used. Utility Model Content

[0005] The purpose of the utility model is to provide a butterfly valve that is convenient for removing the filter screen, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a butterfly valve that is easy to remove the filter screen, comprising a valve body, wherein the two ends of the valve body are respectively fixedly connected to a third connecting flange, and a filter assembly is provided on one side of the valve body, the two ends of the filter assembly are respectively fixedly connected to a first connecting flange and a second connecting flange, and the second connecting flange is fixedly installed to one end of one of the third connecting flanges by a plurality of fastening bolts.

[0007] Preferably, the filter assembly includes a filter mounting plate whose two ends are fixedly connected to the first connecting flange and one end of the second connecting flange respectively.

[0008] Preferably, the filter mounting plate is fixed with an inserting plate in a vertical direction, and a slot is provided on one side of the inner wall of the filter mounting plate to be inserted and matched with the bottom end of the inserting plate.

[0009] Preferably, the outer sides of the filter mounting plate and the plug plate are both rectangular structures, and a circular groove with a diameter smaller than the inner wall diameter of the filter mounting plate is opened at the center of the plug plate.

[0010] Preferably, a filter is fixedly installed in the circular groove of the inserting plate.

[0011] Preferably, two sides of the top of the plug plate are fixedly connected with fixing blocks, and each fixing block is fixedly connected to one end of the filter mounting plate through a plurality of mounting screws.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model connects the third connecting flange on the side of the valve body away from the filter assembly and the first connecting flange at one end of the filter assembly with one end of the pipeline respectively, filters the water communicated therein through the filter screen arranged at the center of the plug plate, and fixes the filter assembly and the valve body with the second connecting flange and one end of the valve body, thereby avoiding the need in the prior art to additionally open a groove for accommodating the filter assembly inside the valve body and increase the processing difficulty, and fixes the plug plate with the filter mounting plate through multiple fixing blocks and mounting screws, thereby facilitating the installation and removal of the plug plate, and even facilitating the installation and removal of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is an enlarged schematic diagram of the structure at point A of the present utility model.

[0016] In the figure: 1. Valve body; 2. Filter assembly; 3. First connecting flange; 4. Second connecting flange; 5. Third connecting flange; 6. Fastening bolts; 21. Filter mounting plate; 22. Insert plate; 23. Filter screen; 24. Fixing block; 25. Mounting screw. DETAILED DESCRIPTION

[0017] 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.

[0018] Example 1

[0019] See also Figure 1-Figure 2 The butterfly valve shown in the figure is easy to remove the filter screen, including a valve body 1, with third connecting flanges 5 fixedly connected at both ends of the valve body 1, and a filter assembly 2 is provided on one side of the valve body 1, with a first connecting flange 3 and a second connecting flange 4 fixedly connected at both ends of the filter assembly 2, and the second connecting flange 4 is fixed to one end of one of the third connecting flanges 5 by a plurality of fastening bolts 6.

[0020] In this embodiment, the filter assembly 2 includes a filter mounting plate 21 whose two ends are fixedly connected to the first connecting flange 3 and one end of the second connecting flange 4 respectively. The filter mounting plate 21 is fixed with a plug plate 22 in the vertical direction, and a slot is provided on one side of the inner wall of the filter mounting plate 21 to plug into and cooperate with the bottom end of the plug plate 22. The outer sides of the filter mounting plate 21 and the plug plate 22 are both rectangular structures, and a circular groove with a diameter smaller than the inner wall diameter of the filter mounting plate 21 is provided at the center of the plug plate 22. The circular groove of the plug plate 22 is fixedly installed with a filter screen 23, and fixed blocks 24 are fixedly connected to both sides of the top of the plug plate 22, and each fixed block 24 is fixedly connected to one end of the filter mounting plate 21 through a number of mounting screws 25.

[0021] Furthermore, the third connecting flange 5 on the side of the valve body 1 away from the filter assembly 2 and the first connecting flange 3 at one end of the filter assembly 2 are respectively connected to one end of the pipeline, and the water connected therein is filtered through the filter screen 23 set at the center of the plug plate 22. The filter assembly 2 and the valve body 1 are fixedly connected to one end of the valve body 1 through the second connecting flange 4, thereby avoiding the need in the prior art to additionally open a groove for accommodating the filter assembly 2 inside the valve body 1, which increases the difficulty of processing. The plug plate 22 is fixedly connected to the filter mounting plate 21 through multiple fixing blocks 24 and mounting screws 25, thereby facilitating the installation and disassembly of the plug plate 22, and even facilitating the installation and disassembly of the filter screen 23.

[0022] The working principle of the present invention is as follows: the third connecting flange 5 on the side of the valve body 1 away from the filter assembly 2 and the first connecting flange 3 at one end of the filter assembly 2 are respectively connected to one end of the pipeline, and the water connected thereto is filtered through the filter screen 23 arranged at the center of the plug plate 22. The filter assembly 2 and the valve body 1 are fixedly connected to one end of the valve body 1 through the second connecting flange 4, thereby avoiding the need in the prior art to additionally open a groove for accommodating the filter assembly 2 inside the valve body 1, which increases the difficulty of processing. The plug plate 22 is fixedly connected to the filter mounting plate 21 through multiple fixing blocks 24 and mounting screws 25, thereby facilitating the installation and removal of the plug plate 22, and even facilitating the installation and removal of the filter screen 23.

[0023] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve for facilitating the removal of a filter screen, comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected to a third connecting flange (5) at both ends, and a filter assembly (2) is provided on one side of the valve body (1). The filter assembly (2) is fixedly connected to a first connecting flange (3) and a second connecting flange (4) at both ends, and the second connecting flange (4) is fixedly installed with one end of one of the third connecting flanges (5) by a plurality of fastening bolts (6). The filter assembly (2) includes a filter mounting plate (21) whose two ends are fixedly connected to the first connecting flange (3) and one end of the second connecting flange (4). The filter mounting plate (21) is plugged and fixed in the vertical direction. A plug plate (22) is provided, and a slot for plugging and matching with the bottom end of the plug plate (22) is provided on one side of the inner wall of the filter mounting plate (21). The outer sides of the filter mounting plate (21) and the plug plate (22) are both rectangular structures, and a circular groove with a diameter smaller than the inner wall diameter of the filter mounting plate (21) is provided at the center of the plug plate (22). A filter screen (23) is fixedly installed in the circular groove of the plug plate (22). Fixed blocks (24) are respectively fixedly connected to the top sides of the plug plate (22), and each fixed block (24) is respectively fixedly connected to one end of the filter mounting plate (21) through a plurality of mounting screws (25).

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