Three-eccentric center butterfly valve

Abstract

A three-eccentric center butterfly valve comprises a three-eccentric center butterfly valve body, a first flange and a second flange are installed on the two sides of the outer end of the three-eccentric center butterfly valve body, a filter plate is installed between the first flange and the second flange, the second flange limits the filter plate, the first flange is provided with a containing groove for containing the filter plate, and the second flange is provided with a containing groove for containing the filter plate. A rotating assembly is mounted on one side of the filter plate; the rotating assembly is installed at the filter plate, the rotating assembly is driven to rotate by means of flowing of liquid, then the filter plate is driven to rotate, large-mass sundries are prevented from blocking the filter opening below, the filter plate is limited and fixed through the second flange to prevent the filter plate from falling off, and the filter plate is convenient to disassemble for maintenance and cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a triple-eccentric butterfly valve. Background Art

[0002] The triple eccentric butterfly valve is a type of industrial gate valve used to regulate and cut off fluids.

[0003] Publication number "CN214789089U" discloses a triple-eccentric butterfly valve, including a butterfly valve body connected to an external water pipe via a flange, a filter mechanism connected via a fixing mechanism is provided on the inner wall of the flange on the butterfly valve body, the filter mechanism includes a first mounting ring and a second mounting ring arranged inside the flange, a sealing ring is provided on the outside of the first mounting ring and the second mounting ring, and a filter screen is provided inside the first mounting ring and the second mounting ring.

[0004] In this solution, impurities in the liquid are filtered through a filter. However, during the flow of the liquid, the impurities in the liquid naturally sink due to gravity, which makes it easier for impurities to adhere to the lower part of the filter. This part is more prone to clogging than other parts of the filter, and the overall utilization rate of the filter is not high.

[0005] To this end, the applicant has made further improvements. Utility Model Content

[0006] The utility model aims at the deficiencies in the prior art and provides a three-eccentric butterfly valve. The utility model solves the problem that the filter plate is blocked due to most of the debris being concentrated at one position for filtering during the filtering process, and is convenient for maintenance and cleaning.

[0007] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0008] A triple-eccentric butterfly valve comprises a triple-eccentric butterfly valve body, wherein a first flange and a second flange are installed on both sides of the outer end of the triple-eccentric butterfly valve body, a filter plate is installed between the first flange and the second flange, the second flange limits the filter plate, the first flange is provided with a placement groove for placing the filter plate, and a rotating assembly is installed on one side of the filter plate.

[0009] In the above technical solution, preferably, the placement groove is opened at the outer end of the first flange.

[0010] In the above technical solution, preferably, the inner diameter of the second flange is smaller than the inner diameter of the first flange.

[0011] In the above technical solution, preferably, the rotating assembly includes a rotating block, and the rotating block is provided with a plurality of rotating blades.

[0012] In the above technical solution, preferably, the rotating block is placed at the center of the filter plate, and a through hole is opened at the center of the rotating block.

[0013] In the above technical solution, preferably, the filter plate is in the shape of a ring, and a plurality of penetrating filter holes are provided on the filter plate.

[0014] In the above technical solution, preferably, the first flange is connected to the triple-eccentric butterfly valve body, the second flange is connected to the first flange, and the second flange is placed at the outermost side of the triple-eccentric butterfly valve body.

[0015] In the above technical solution, preferably, the first flange and the second flange are both provided with a plurality of mounting holes for adaptive connection on the flange plates.

[0016] In the above technical solution, preferably, the center hole positions of the mounting hole of the first flange and the mounting hole of the second flange are aligned.

[0017] In the above technical solution, preferably, the triple-eccentric butterfly valve body is provided with a valve seat at the outer end pipe section, and a hand wheel is provided on the valve seat.

[0018] The beneficial effects of the utility model are as follows: a rotating assembly is installed at the filter plate, and the rotating assembly is driven to rotate by the flow of liquid, thereby driving the filter plate to rotate, preventing excessive impurities from accumulating at the filter mesh position, and improving the overall utilization rate of the filter mesh; the filter plate is fixed by the second flange to prevent the filter plate from falling off, and is convenient for disassembly for maintenance and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the utility model.

[0021] Figure 3 This is a schematic diagram of the filter plate of the present invention.

[0022] Figure 4 This is a schematic diagram of the second flange of the present invention.

[0023] Figure 5 This is a cross-sectional view of the utility model.

[0024] 1. Triple-eccentric butterfly valve body, 11. Valve seat, 12. Handwheel, 2. First flange, 21. Placement groove, 3. Second flange, 4. Filter plate, 41. Rotating block, 42. Rotating vane, 43. Filter hole, 5. Mounting hole. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0026] like Figure 1-Figure 5 As shown, a triple eccentric butterfly valve includes a triple eccentric butterfly valve body 1, a first flange 2 and a second flange 3 are installed on the outer end of the triple eccentric butterfly valve body 1, the first flange 2 and the second flange 3 are installed on the outer ends of both sides of the triple eccentric butterfly valve body 1, and a filter plate 3 is installed between the first flange 2 and the second flange 3.

[0027] In this embodiment, the first flange 2 is mounted on the outer end of the triple-eccentric butterfly valve body 1 , and a placement groove 21 is provided at the outer end of the inner ring of the first flange 2 , and the placement groove 21 is used to place the filter plate 4 .

[0028] Furthermore, the flange plate of the first flange 2 is provided with a plurality of mounting holes 5 arranged circumferentially, and there are at least four mounting holes 5. The flange plate of the second flange 3 is provided with a plurality of mounting holes 5 with the same number as the first flange 2, and the center hole positions of the mounting holes 5 of the first flange 2 and the mounting holes 5 of the second flange 3 are aligned, and the diameter of the second flange 3 is the same as the diameter of the first flange 2.

[0029] When the filter plate 4 is placed in the placement groove 21 opened in the first flange 2 , the first flange 2 and the second flange 3 are connected by aligning the mounting holes 5 and fixed by screws, and the second flange 3 can limit the filter plate 4 .

[0030] Specifically, the inner diameter of the center hole of the second flange 3 is smaller than the inner diameter of the center hole of the placement groove 21 provided in the first flange 2. Therefore, the second flange 3 can limit the filter plate 4, and when the liquid in the triple-eccentric butterfly valve body 1 continues to flow through, the limited filter plate 4 will not fall off or loosen due to the flow of the liquid.

[0031] In this embodiment, the filter plate 4 is annular in shape and is provided with a rotating block 41 , rotating blades 42 and a plurality of filter holes 43 . The rotating block 41 and the rotating blades 42 are installed on the side that does not directly filter the liquid.

[0032] Furthermore, the rotating block 41 has a through hole at its center and at least four rotating blades along its circumference. The diameter of the through hole is the same as that of the filter hole 43. The filter hole 43 and the through hole can be circular or elliptical.

[0033] When the liquid in the triple-eccentric butterfly valve body 1 continues to flow, the filter holes 43 can filter out the debris that accompanies the liquid, and during the flow process, some larger debris will gather under the liquid due to their own weight. At the same time, when the liquid continues to flow forward through the filter plate 43, its thrust drives the rotating vane 42 to rotate, and the rotating vane then drives the rotating block 41 to rotate, and the rotating block 41 then drives the filter plate 4 to rotate.

[0034] Furthermore, it can prevent the filter plate 4 from being blocked due to debris that is too heavy or too large to pass through the filter plate 4.

[0035] In this embodiment, since the triple eccentric butterfly valve body 1 can flow liquid in two directions, the filter plates 4 are installed on both sides of the triple eccentric butterfly valve body 1 and are both limited by the second flange 3 located at the outermost end.

[0036] When the operator needs to perform cleaning and maintenance, he only needs to loosen the screws on the second flange 3 and remove the second flange 3 to remove the filter plate 4 without having to perform other unnecessary and cumbersome steps.

[0037] Furthermore, a valve seat 11 is installed at the outer diameter of the triple-eccentric butterfly valve body 1 , and a hand wheel 12 for operating the triple-eccentric butterfly valve body 1 is installed above the valve seat 11 .

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A triple eccentric butterfly valve, characterized by: The invention comprises a triple-eccentric butterfly valve body (1), wherein a first flange (2) and a second flange (3) are installed on both sides of the outer end of the triple-eccentric butterfly valve body (1), a filter plate (4) is installed between the first flange (2) and the second flange (3), the second flange (3) limits the filter plate, the first flange (2) is provided with a placement groove (21) for placing the filter plate (4), and a rotating assembly is installed on one side of the filter plate (4).

2. A triple eccentric butterfly valve according to claim 1, characterized in that: The placement groove (21) is opened at the outer end of the first flange (2).

3. The triple eccentric butterfly valve according to claim 1, characterized in that: The inner diameter of the second flange (3) is smaller than the inner diameter of the first flange (2).

4. The triple eccentric butterfly valve according to claim 1, characterized in that: The rotating assembly comprises a rotating block (41), and the rotating block (41) is provided with a plurality of rotating blades (42).

5. The triple eccentric butterfly valve according to claim 4, characterized in that: The rotating block (41) is placed at the center of the filter plate (4), and a through hole is opened at the center of the rotating block (41).

6. The triple eccentric butterfly valve according to claim 1, characterized in that: The filter plate (4) is annular in shape, and is provided with a plurality of filter holes (43) passing through the filter plate (4).

7. The triple eccentric butterfly valve according to claim 1, characterized in that: The first flange (2) is connected to the triple-eccentric butterfly valve body (1), the second flange (3) is connected to the first flange (2), and the second flange (3) is placed on the outermost side of the triple-eccentric butterfly valve body (1).

8. The triple eccentric butterfly valve according to claim 7, characterized in that: The first flange (2) and the second flange (3) are both provided with a plurality of mounting holes (5) for adapting connection on the flange plates.

9. The triple eccentric butterfly valve according to claim 8, characterized in that: The center hole positions of the mounting hole (5) of the first flange (2) and the mounting hole (5) of the second flange (3) are aligned.

10. The triple eccentric butterfly valve according to claim 1, characterized in that: The triple-eccentric butterfly valve body (1) is provided with a valve seat (11) at the outer end pipe section, and a hand wheel (12) is provided on the valve seat.

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