A combined butterfly valve

Abstract

The utility model discloses a combined butterfly valve, comprising two half valve bodies, wherein the inner wall of the half valve bodies is symmetrically provided with overlapping grooves, a valve plate is arranged between the two half valve bodies, overlapping rings are installed at the upper and lower ends of the valve plate, a through hole is arranged inside the valve plate, a limit rod is symmetrically installed on the inner wall of the through hole, a valve stem is arranged inside the through hole, a limit groove is symmetrically arranged on the side of the valve stem, a clamping groove is symmetrically arranged on the side of the valve stem, the upper ends of the two half valve bodies are fixedly connected to a control mechanism by bolts, a fixing mechanism 1 is sleeved on the outer surfaces of the two half valve bodies, and a fixing mechanism 2 is arranged on the lower parts of the two half valve bodies. The utility model puts the valve plate into one half valve body, passes the valve stem through a plurality of bearings and the inside of the valve plate, covers the other half valve body on it and closes it, installs it outside the two half valve bodies through the fixing mechanism 1 and the fixing mechanism 2, and installs and disassembles it by combining the two half valve bodies, the valve plate, the valve stem and the control mechanism, thereby improving the efficiency of installing and disassembling the butterfly valve.

Description

Technical Field

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

[0002] A butterfly valve, also called a flap valve, is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. A butterfly valve is a valve whose closing member (valve disc or butterfly plate) is a disc that rotates around the valve shaft to achieve opening and closing. There are various types of existing butterfly valves, but most of them have the defect of being inconvenient to disassemble and assemble. Most of the existing butterfly valves are integrated structures, which are very complicated to disassemble and assemble. They are also inconvenient to assemble. When performing maintenance, it is not convenient for the staff to disassemble, which affects the maintenance progress. Therefore, those skilled in the art provide a combined butterfly valve to solve the problems raised in the above background technology. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a combined butterfly valve, comprising two half valve bodies, the outer walls of the half valve bodies are symmetrically provided with overlapping grooves, a valve plate is arranged between the two half valve bodies, overlapping rings are installed at the upper and lower ends of the valve plate, a through hole is arranged inside the valve plate, a limiting rod is symmetrically installed on the inner wall of the through hole, a valve stem is arranged inside the through hole, limiting grooves are symmetrically arranged on the side of the valve stem, and the limiting grooves penetrate the lower end of the valve stem, a clamping groove is symmetrically arranged on the side of the valve stem, and the clamping groove penetrates the upper end of the valve stem, the upper ends of the two half valve bodies are fixedly connected to the control mechanism by bolts, and the control mechanism clamps the upper end of the valve stem, a fixing mechanism one is sleeved on the outer surfaces of the two half valve bodies, and a fixing mechanism two is arranged on the lower parts of the two half valve bodies;

[0004] The fixing mechanism 1 includes a semi-arc block 1 and a semi-arc block 2. A connecting groove is symmetrically provided at the right end of the semi-arc block 1, and the upper end of the connecting groove passes through the upper end of the semi-arc block 1. A connecting block is symmetrically installed at the left end of the semi-arc block 2. The upper ends of the semi-arc block 1 and the semi-arc block 2 both have thread grooves symmetrically provided.

[0005] The second fixing mechanism includes a circular groove block and an insert block. A cavity is symmetrically arranged inside the circular groove block. The pull block is slidably connected inside the cavity. A pull rod is installed at the outer end of the pull block. A spring is symmetrically installed at the outer end of the pull block. The insert block is installed at the inner end of the pull block, and the insert block passes through the inner wall of the circular groove block. A slot is opened at the lower part of the side of the half valve body, and the slot corresponds to the position of the insert block.

[0006] Preferably: a plurality of bearing grooves are provided on the inner wall of the half valve body, and bearings are arranged inside the bearing grooves.

[0007] Preferably, the connecting groove has a T-shaped cross section.

[0008] Preferably, the connecting block has a T-shaped cross section.

[0009] Preferably, arc plates are symmetrically arranged on the upper ends of the semi-arc block 1 and the semi-arc block 2, and fastening bolts are symmetrically arranged inside the arc plates.

[0010] Preferably, the pull rod passes through the circular groove block to install the pull ring.

[0011] Preferably, the upper end surface of the plug block is a curved surface.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model places a valve plate into a half valve body, places a bearing into a bearing groove, passes a valve stem through a plurality of bearings and the inside of the valve plate, and then covers the other half valve body on top and closes it, and installs it outside the two half valve bodies through a fixing mechanism 1 and a fixing mechanism 2, so that the two half valve bodies are fixedly connected, and finally installs the control mechanism, and the efficiency of installing and disassembling the butterfly valve is improved by combining the two half valve bodies, the valve plate, the valve stem and the control mechanism for installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of this application;

[0015] Figure 2 It is a schematic diagram of the expansion of this application;

[0016] Figure 3 It is a schematic diagram of the structure of the half valve body of the present application;

[0017] Figure 4 It is a structural schematic diagram of the valve plate of the present application;

[0018] Figure 5 It is a structural schematic diagram of the valve stem of the present application;

[0019] Figure 6 It is a structural schematic diagram of the fixing mechanism 1 of the present application;

[0020] Figure 7 It is a structural schematic diagram of the second fixing mechanism of the present application;

[0021] In the figure: 1. half valve body; 2. bearing groove; 3. overlapping groove; 4. valve plate; 5. through hole; 6. limit rod; 7. overlapping ring; 8. bearing; 9. valve stem; 10. limit groove; 11. clamping groove; 12. control mechanism; 13. fixing mechanism 1; 14. semi-arc block 1; 15. semi-arc block 2; 16. connecting groove; 17. connecting block; 18. threaded groove; 19. arc plate; 20. fastening bolt; 21. fixing mechanism 2; 22. round groove block; 23. cavity; 24. pull block; 25. pull rod; 26. plug block; 27. spring; 28. slot. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0023] See also Figures 1 to 7 In this embodiment, a combined butterfly valve is provided, comprising two half valve bodies 1, wherein the inner wall of the half valve body 1 is provided with a plurality of bearing grooves 2, and a bearing 8 is arranged inside the bearing groove 2, a lap groove 3 is symmetrically arranged on the inner wall of the half valve body 1, a valve plate 4 is arranged between the two half valve bodies 1, and lap rings 7 are installed at the upper and lower ends of the valve plate 4, a through hole 5 is arranged inside the valve plate 4, a limiting rod 6 is symmetrically installed on the inner wall of the through hole 5, a valve stem 9 is arranged inside the through hole 5, a limiting groove 10 is symmetrically arranged on the side of the valve stem 9, and the limiting groove 10 passes through the lower end of the valve stem 9, a clamping groove 11 is symmetrically arranged on the side of the valve stem 9, and the clamping groove 11 passes through the upper end of the valve stem 9, the upper ends of the two half valve bodies 1 are fixedly connected to a control mechanism 12 by bolts, and the control mechanism 12 clamps the upper end of the valve stem 9, a fixing mechanism 1 13 is sleeved on the outer surfaces of the two half valve bodies 1, and a fixing mechanism 2 21 is arranged on the lower parts of the two half valve bodies 1, the fixing mechanism 1 13 comprises a semi-arc block 14 and a semi-arc block 2 15, and the right end of the semi-arc block 1 14 is symmetrically provided with a fixing mechanism 1 The connecting groove 16 is provided with a top end penetrating through the top end of the semi-arc block 14, and the cross section of the connecting groove 16 is T-shaped. The left end of the semi-arc block 15 is symmetrically provided with a connecting block 17, and the cross section of the connecting block 17 is T-shaped. The top ends of the semi-arc block 14 and the semi-arc block 15 are both symmetrically provided with a threaded groove 18. The top ends of the semi-arc block 14 and the semi-arc block 15 are symmetrically provided with an arc plate 19, and the inside of the arc plate 19 is symmetrically provided with a fastening bolt 20. The fixing mechanism 21 includes a circular groove block 22 and an insert block 26, a cavity 23 is symmetrically arranged inside the circular groove block 22, a pull block 24 is slidably connected inside the cavity 23, a pull rod 25 is installed at the outer end of the pull block 24, and the pull rod 25 passes through the circular groove block 22 to install a pull ring, a spring 27 is symmetrically installed at the outer end of the pull block 24, an insert block 26 is installed at the inner end of the pull block 24, and the insert block 26 passes through the inner wall of the circular groove block 22, the upper end surface of the insert block 26 is an arc surface, and a slot 28 is provided at the lower part of the side surface of the half valve body 1, and the slot 28 corresponds to the position of the insert block 26.

[0024] The working principle of the utility model is as follows: put the valve plate 4 into a half valve body 1, place the lap ring 7 in the lap groove 3, put the bearing 8 into the bearing groove 2, pass the valve stem 9 through a plurality of bearings 8 and the inside of the valve plate 4, insert the limit rod 6 into the limit groove 10, then, cover the upper end of the other half valve body 1 with one half valve body 1, then, install the fixing mechanism 1 13 and the fixing mechanism 2 21 on the outside of the two half valve bodies 1, first fit the half arc block 14 and the half arc block 2 15 to the half valve body 1, push the half arc block 2 15 down, insert the connecting block 17 into the connecting groove 16, and fix the half arc block 14 and the half arc block 2 15 to the outside of the two half valve bodies 1. The connection is fixed, and then the fastening bolt 20 is screwed into the threaded groove 18, so that the arc plate 19 is installed on the upper ends of the semi-arc block 14 and the semi-arc block 2 15, and the positions of the semi-arc block 14 and the semi-arc block 2 15 are fixed. Then, the circular groove block 22 is sleeved on the lower ends of the two half valve bodies 1, and the pull block 24 is pushed to reset by the spring 27. The pull block 24 drives the plug block 26 to be inserted into the slot 28, so that the circular groove block 22 is installed at the lower part of the two half valve bodies 1, and the two half valve bodies 1 are installed together through the fixing mechanism 13 and the fixing mechanism 21. Finally, the control mechanism 12 is installed on the upper ends of the two half valve bodies 1, so that the control mechanism 12 is clamped with the valve stem 9.

[0025] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A combined butterfly valve, comprising two half valve bodies (1), characterized in that: The inner wall of the half valve body (1) is symmetrically provided with overlapping grooves (3), a valve plate (4) is arranged between the two half valve bodies (1), overlapping rings (7) are installed at the upper and lower ends of the valve plate (4), a through hole (5) is arranged inside the valve plate (4), a limiting rod (6) is symmetrically installed on the inner wall of the through hole (5), a valve stem (9) is arranged inside the through hole (5), a limiting groove (10) is symmetrically arranged on the side of the valve stem (9), and the limiting groove (10) passes through the lower end of the valve stem (9), a clamping groove (11) is symmetrically arranged on the side of the valve stem (9), and the clamping groove (11) passes through the upper end of the valve stem (9), the upper ends of the two half valve bodies (1) are fixedly connected to the control mechanism (12) by bolts, and the control mechanism (12) is clamped to the upper end of the valve stem (9), the outer surfaces of the two half valve bodies (1) are sleeved with a fixing mechanism one (13), and the lower parts of the two half valve bodies (1) are provided with a fixing mechanism two (21); The fixing mechanism 1 (13) comprises a semi-arc block 1 (14) and a semi-arc block 2 (15); a connecting groove (16) is symmetrically provided at the right end of the semi-arc block 1 (14), and the upper end of the connecting groove (16) passes through the upper end of the semi-arc block 1 (14); a connecting block (17) is symmetrically installed at the left end of the semi-arc block 2 (15); and thread grooves (18) are symmetrically provided at the upper ends of the semi-arc block 1 (14) and the semi-arc block 2 (15); The second fixing mechanism (21) comprises a circular groove block (22) and an insert block (26). A cavity (23) is symmetrically arranged inside the circular groove block (22). A pull block (24) is slidably connected inside the cavity (23). A pull rod (25) is installed at the outer end of the pull block (24). A spring (27) is symmetrically installed at the outer end of the pull block (24). An insert block (26) is installed at the inner end of the pull block (24), and the insert block (26) passes through the inner wall of the circular groove block (22). A slot (28) is provided at the lower part of the side surface of the half valve body (1), and the slot (28) corresponds to the position of the insert block (26).

2. A combined butterfly valve according to claim 1, characterized in that: The inner wall of the half valve body (1) is provided with a plurality of bearing grooves (2), and bearings (8) are arranged inside the bearing grooves (2).

3. A combined butterfly valve according to claim 1, characterized in that: The connecting groove (16) has a T-shaped cross section.

4. A combined butterfly valve according to claim 1, characterized in that: The connecting block (17) has a T-shaped cross section.

5. A combined butterfly valve according to claim 1, characterized in that: Arc plates (19) are symmetrically arranged on the upper ends of the semi-arc block 1 (14) and the semi-arc block 2 (15), and fastening bolts (20) are symmetrically arranged inside the arc plates (19).

6. A combined butterfly valve according to claim 1, characterized in that: The pull rod (25) passes through the circular groove block (22) to install the pull ring.

7. A combined butterfly valve according to claim 1, characterized in that: The upper end surface of the insert block (26) is a curved surface.

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