Double-sealing butterfly valve with double valve plates

Abstract

The utility model discloses a double-valve-plate double-seal butterfly valve which comprises a valve pipe, an eccentric bin is arranged on the outer surface of the valve pipe, a fixing block is fixedly connected to the outer surface of the eccentric bin, a connecting frame is fixedly connected to the outer surface of the fixing block, a fixing bin is fixedly connected to the upper surface of the connecting frame, and the fixing bin is fixedly connected to the lower surface of the connecting frame. The inner surface of the fixed bin is rotationally connected with a rotating shaft, and the outer surface of the rotating shaft is fixedly connected with a rotating handle. Through the arrangement of the eccentric bin, the first valve plate and the second valve plate, a medium in the pipe can be doubly blocked, so that the sealing effect is improved, the possibility of medium leakage is reduced, meanwhile, through the arrangement of the filter plate, the medium entering the pipe can be filtered, and the use effect of the butterfly valve is improved; and through the arrangement of structures such as a guide rail, a sliding rod, a spring, a sliding block, a fixing column, a U-shaped limiting frame, a handle and an inserting block, the filter plate can be conveniently disassembled and assembled, and therefore the practicability of the butterfly valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, and particularly relates to a double-valve-plate double-sealing butterfly valve. Background Technique

[0002] A butterfly valve is a common type of valve, mainly used for cutting off and regulating the fluid flow in a pipeline. It consists of a disc-shaped valve plate and a valve body. When the valve plate rotates, it rotates in the pipeline like a butterfly wing, thereby controlling the fluid flow. The butterfly valve is very popular in various industrial applications due to its simple structure, small size, light weight, low cost, rapid opening and closing, and easy maintenance.

[0003] However, the traditional butterfly valve still has certain defects. For example, it usually adopts a single-valve-plate design, which has a simple structure and is prone to problems such as insufficient sealing. Secondly, it is unable to filter the medium passing through the butterfly valve, resulting in an unsatisfactory use effect of the butterfly valve. Content of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a double-valve-plate double-sealing butterfly valve. Through the settings of an eccentric chamber, a first valve plate, and a second valve plate, double blocking of the medium in the pipe can be achieved, thereby improving the sealing effect and reducing the possibility of medium leakage. At the same time, through the setting of a filter plate, the medium entering the pipe can be filtered, thereby improving the use effect of the butterfly valve. Moreover, through the settings of structures such as guide rails, sliding rods, springs, sliders, fixed columns, U-shaped limit frames, handles, and insertion blocks, the filter plate can be conveniently disassembled and installed, thereby improving the practicability of the butterfly valve.

[0005] The utility model also provides the above-mentioned double-valve-plate double-sealing butterfly valve, including:

[0006] A valve pipe, an eccentric chamber is arranged on the outer surface of the valve pipe, a fixed block is fixedly connected to the outer surface of the eccentric chamber, a connecting frame is fixedly connected to the outer surface of the fixed block, a fixed chamber is fixedly connected to the upper surface of the connecting frame, a rotating shaft is rotatably connected to the inner surface of the fixed chamber, a rotating handle is fixedly connected to the outer surface of the rotating shaft, a first conical gear is fixedly connected to the outer surface of the rotating shaft, a connecting shaft is rotatably connected to the inner surface of the fixed chamber, a second conical gear is fixedly connected to the outer surface of the connecting shaft, a sleeve is fixedly connected to the outer surface of the connecting shaft, a first valve plate is fixedly connected to the outer surface of the sleeve, and a limiting block is fixedly connected to the inner surface of the valve pipe.

[0007] The outer surface of the valve pipe is provided with a filter plate bin, the inner surface of the filter plate bin is provided with a filter plate groove, the inner surface of the filter plate groove is provided with a filter plate, the side surface of the filter plate bin is fixedly connected with a guide rail, the side surface of the guide rail is provided with a chute, the inner surface of the chute is fixedly connected with a sliding rod, a spring is arranged on the outer surface of the sliding rod, a slider is arranged on the outer surface of the sliding rod, a fixed column is fixedly connected to the side surface of the slider, a U-shaped limiting frame is rotatably connected to the outer surface of the fixed column, a handle is fixedly connected to the upper surface of the U-shaped limiting frame, and a plug is fixedly connected to the lower surface of the U-shaped limiting frame.

[0008] According to the double-valve-plate double-sealing butterfly valve described above, the upper surface of the filter plate is provided with a jack, and the inner surface of the jack is adapted to the plug, which is convenient for limiting and fixing the filter plate.

[0009] According to the double-valve-plate double-sealing butterfly valve described above, the inner surface of the eccentric bin is adapted to the first valve plate, and the inner surface of the eccentric bin is adapted to the second valve plate, which is convenient for the flipping of the valve plate.

[0010] According to the double-valve-plate double-sealing butterfly valve described above, the first conical tooth is engaged with the second conical tooth, and the outer surface of the connecting shaft is rotatably connected with the connecting frame.

[0011] According to the double-valve-plate double-sealing butterfly valve described above, the upper surface of the filter plate is in contact with the U-shaped limiting frame, and the number of the guide rails is two and they are distributed left and right.

[0012] According to the double-valve-plate double-sealing butterfly valve described above, the inner surface of the chute is adapted to the slider, and the number of the springs is two and they are distributed left and right.

[0013] According to the double-valve-plate double-sealing butterfly valve described above, the upper end of the spring is fixedly connected with the guide rail, and the lower end of the spring is fixedly connected with the slider.

[0014] According to the double-valve-plate double-sealing butterfly valve described above, the outer surface of the connecting shaft is rotatably connected with the fixed block, and the outer surface of the connecting shaft is rotatably connected with the eccentric bin.

[0015] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes the present utility model in conjunction with the drawings and embodiments;

[0017] Figure 1 It is a schematic diagram of the overall structure of a double-valve-plate double-sealing butterfly valve of the present utility model;

[0018] Figure 2This is a cross-sectional view of the overall structure of a double-valve-plate double-sealed butterfly valve of the present utility model;

[0019] Figure 3 This is a schematic diagram of the filter plate structure of a double-valve-plate double-sealed butterfly valve of the present utility model;

[0020] Figure 4 This is a cross-sectional view of a partial structure of a double-valve-plate double-sealed butterfly valve of the present utility model;

[0021] Figure 5 is Figure 4 an enlarged schematic diagram of the structure at A in

[0022] Legend description:

[0023] 1. Valve pipe; 2. Eccentric bin; 3. Fixed block; 4. Connecting frame; 5. Fixed bin; 6. Rotating shaft; 7. Rotating handle; 8. First conical tooth; 9. Connecting shaft; 10. Second conical tooth; 11. Sleeve; 12. First valve plate; 13. Second valve plate; 14. Filter plate bin; 15. Filter plate; 16. Guide rail; 17. Slide groove; 18. Slide rod; 19. Spring; 20. Slide block; 21. Fixed column; 22. U-shaped limit frame; 23. Handle; 24. Insert block; 25. Insert hole; 26. Filter plate groove; 27. Limit block. Specific embodiments

[0024] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0025] Refer to Figures 1-5, an embodiment of the utility model is a double-disc double-sealing butterfly valve, which comprises: a valve pipe 1, an eccentric chamber 2 is arranged on the outer surface of the valve pipe 1, a fixed block 3 is fixedly connected to the outer surface of the eccentric chamber 2, a connecting frame 4 is fixedly connected to the outer surface of the fixed block 3, a fixed chamber 5 is fixedly connected to the upper surface of the connecting frame 4, a rotating shaft 6 is rotatably connected to the inner surface of the fixed chamber 5, a rotating handle 7 is fixedly connected to the outer surface of the rotating shaft 6, a first bevel gear 8 is fixedly connected to the outer surface of the rotating shaft 6, a connecting shaft 9 is rotatably connected to the inner surface of the fixed chamber 5, a second bevel gear 10 is fixedly connected to the outer surface of the connecting shaft 9, a sleeve 11 is fixedly connected to the outer surface of the connecting shaft 9, a first valve plate 12 is fixedly connected to the outer surface of the sleeve 11, a limiting block 27 is fixedly connected to the inner surface of the valve pipe 1, the inner surface of the eccentric chamber 2 is adapted to the first valve plate 12, the inner surface of the eccentric chamber 2 is adapted to the second valve plate 13, the first bevel gear 8 meshes with the second bevel gear 10, the outer surface of the connecting shaft 9 is rotatably connected to the connecting frame 4, the outer surface of the connecting shaft 9 is rotatably connected to the fixed block 3, and the outer surface of the connecting shaft 9 is rotatably connected to the eccentric chamber 2.

[0026] A filter plate chamber 14 is arranged on the outer surface of the valve pipe 1, a filter plate groove 26 is arranged on the inner surface of the filter plate chamber 14, a filter plate 15 is arranged on the inner surface of the filter plate groove 26, a guide rail 16 is fixedly connected to the side surface of the filter plate chamber 14, a sliding groove 17 is arranged on the side surface of the guide rail 16, a sliding rod 18 is fixedly connected to the inner surface of the sliding groove 17, a spring 19 is arranged on the outer surface of the sliding rod 18, a slider 20 is arranged on the outer surface of the sliding rod 18, a fixing column 21 is fixedly connected to the side surface of the slider 20, a U-shaped limiting frame 22 is rotatably connected to the outer surface of the fixing column 21, a handle 23 is fixedly connected to the upper surface of the U-shaped limiting frame 22, an inserting block 24 is fixedly connected to the lower surface of the U-shaped limiting frame 22, a jack 25 is arranged on the upper surface of the filter plate 15, the inner surface of the jack 25 is adapted to the inserting block 24, the upper surface of the filter plate 15 is in contact with the U-shaped limiting frame 22, the number of the guide rails 16 is two and they are distributed left and right, the inner surface of the sliding groove 17 is adapted to the slider 20, the number of the springs 19 is two and they are distributed left and right, the upper end of the spring 19 is fixedly connected to the guide rail 16, and the lower end of the spring 19 is fixedly connected to the slider 20.

[0027] Working principle: When it is necessary to cut off the medium in the pipe, just rotate the rotating handle 7, which drives the rotating shaft 6 to drive the first bevel gear 8, the second bevel gear 10, the connecting shaft 9, and the sleeve 11 to rotate, so as to drive the first valve plate 12 and the second valve plate 13 to perform eccentric flipping inside the eccentric bin 2. When the first valve plate 12 contacts the limit block 27, the medium inside the valve pipe 1 can be cut off, and the double blocking effect of the second valve plate 13 can effectively prevent the leakage of the medium inside the valve pipe 1. At the same time, when the medium flows into the valve pipe 1 and passes through the filter plate bin 14, under the action of the filter plate 15, the medium can be effectively filtered, so as to ensure the purity of the inflowing medium and improve the use effect. When it is necessary to clean the filter plate 15, just pull up the handle 23, which drives the U-shaped limit frame 22 to drive the insertion block 24 to move upward along the slide rod 18 under the action of the fixed column 21 and the slider 20, and compress the spring 19, so that the insertion block 24 can be disengaged from the inside of the jack 25. Then, rotate the whole U-shaped limit frame 22 around the fixed column 21 to release the limiting effect on the filter plate 15. Then, pull out the filter plate 15 along the inside of the filter plate groove 26 to complete the disassembly. After the cleaning is completed, insert the filter plate 15 back into the filter plate groove 26, and pull the handle 23 again and rotate it around the fixed column 21. When the positions of the insertion block 24 and the jack 25 correspond, release the handle 23. Under the action of the springs 19 on both sides, the insertion block 24 will automatically snap into the jack 25, and the overall replacement of the filter plate 15 can be completed, which is simple and convenient.

[0028] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A double valve plate double seal butterfly valve, characterized in that: include: A valve tube (1), wherein an eccentric bin (2) is provided on the outer surface of the valve tube (1), a fixed block (3) is fixedly connected to the outer surface of the eccentric bin (2), a connecting frame (4) is fixedly connected to the outer surface of the fixing block (3), a fixing bin (5) is fixedly connected to the upper surface of the connecting frame (4), a rotating shaft (6) is rotatably connected to the inner surface of the fixing bin (5), a rotating handle (7) is fixedly connected to the outer surface of the rotating shaft (6), a first conical tooth (8) is fixedly connected to the outer surface of the rotating shaft (6), a connecting shaft (9) is rotatably connected to the inner surface of the fixing bin (5), a second conical tooth (10) is fixedly connected to the outer surface of the connecting shaft (9), a sleeve (11) is fixedly connected to the outer surface of the connecting shaft (9), a first valve plate (12) is fixedly connected to the outer surface of the sleeve (11), and a limiting block (27) is fixedly connected to the inner surface of the valve tube (1); The outer surface of the valve tube (1) is provided with a filter plate bin (14), the inner surface of the filter plate bin (14) is provided with a filter plate groove (26), the inner surface of the filter plate groove (26) is provided with a filter plate (15), the side surface of the filter plate bin (14) is fixedly connected with a guide rail (16), the side surface of the guide rail (16) is provided with a slide groove (17), the inner surface of the slide groove (17) is fixedly connected with a slide rod (18), the outer surface of the slide rod (18) is provided with a spring (19), the outer surface of the slide rod (18) is provided with a slider (20), the side surface of the slider (20) is fixedly connected with a fixing column (21), the outer surface of the fixing column (21) is rotatably connected with a U-shaped limiting frame (22), the upper surface of the U-shaped limiting frame (22) is fixedly connected with a handle (23), and the lower surface of the U-shaped limiting frame (22) is fixedly connected with an insert block (24).

2. A double valve plate double seal butterfly valve according to claim 1, characterized in that: The upper surface of the filter plate (15) is provided with an insertion hole (25), and the inner surface of the insertion hole (25) is adapted to the insertion block (24).

3. A double valve plate double seal butterfly valve according to claim 1, characterized in that: The inner surface of the eccentric bin (2) is matched with the first valve plate (12), and the inner surface of the eccentric bin (2) is matched with the second valve plate (13).

4. A double-valve plate double-seal butterfly valve according to claim 1, characterized in that: The first conical teeth (8) are meshed with the second conical teeth (10), and the outer surface of the connecting shaft (9) is rotatably connected to the connecting frame (4).

5. The double-valve-plate double-seal butterfly valve according to claim 1, characterized in that: The upper surface of the filter plate (15) is in contact with the U-shaped limiting frame (22), and the number of the guide rails (16) is two and they are distributed on the left and right.

6. The double-valve-plate double-seal butterfly valve according to claim 1, characterized in that: The inner surface of the slide groove (17) is matched with the slider (20), and the number of the springs (19) is two and they are distributed on the left and right.

7. The double-valve-plate double-seal butterfly valve according to claim 1, characterized in that: The upper end of the spring (19) is fixedly connected to the guide rail (16), and the lower end of the spring (19) is fixedly connected to the slider (20).

8. The double-valve-plate double-seal butterfly valve according to claim 1, characterized in that: The outer surface of the connecting shaft (9) is rotatably connected to the fixed block (3), and the outer surface of the connecting shaft (9) is rotatably connected to the eccentric bin (2).

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