Butterfly valve convenient to disassemble and assemble

Abstract

The butterfly valve convenient to disassemble and assemble comprises a valve body, a valve seat, a valve shaft, a first valve plate and a second valve plate, the valve seat is installed in the valve body, the valve shaft is rotationally arranged in the valve body and penetrates through the valve seat, the first valve plate and the second valve plate abut against each other and are located in the valve seat, and the valve shaft is clamped between the first valve plate and the second valve plate. A first fixing hole is formed in the first valve plate, a second fixing hole is formed in the second valve plate, and fixing pieces used for fixing the first valve plate and the second valve plate to the valve shaft are arranged in the first fixing hole and the second fixing hole in a penetrating mode. According to the butterfly valve convenient to disassemble and assemble, quick disassembly and assembly of the valve plate are achieved, and great convenience is brought to a user.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve which is easy to assemble and disassemble. Background Art

[0002] The butterfly valve is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. The butterfly valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays the role of cutting off and throttling on the pipeline. The butterfly valve opening and closing part is a disc-shaped valve plate that rotates around its own axis in the valve body to achieve the purpose of opening, closing or regulating.

[0003] For the assembly of the butterfly valve, the valve plate is generally placed in the valve seat first, and then the valve shaft is passed through the valve plate from top to bottom to connect with the valve body, and finally the drive device is installed. With this installation method, when performing subsequent maintenance on the valve plate, the valve shaft needs to be removed before the valve plate can be taken out, which brings inconvenience in maintenance. Utility Model Content

[0004] The utility model aims to provide a butterfly valve which is easy to disassemble and assemble, so as to solve the above problems existing in the current butterfly valve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A butterfly valve that is easy to disassemble and assemble, comprises a valve body, a valve seat, a valve shaft, a first valve plate and a second valve plate, the valve seat being installed in the valve body, the valve shaft being rotatably arranged in the valve body and passing through the valve seat, the first valve plate and the second valve plate being arranged in abutment with each other and being located in the valve seat, the valve shaft being clamped between the first valve plate and the second valve plate, a first fixing hole being arranged on the first valve plate, a second fixing hole being arranged on the second valve plate, and fixing parts for fixing the first valve plate and the second valve plate to the valve shaft being passed through the first fixing hole and the second fixing hole.

[0007] Furthermore, a first arc-shaped groove is provided in the middle of the first valve plate along the radial direction, a second arc-shaped groove is provided in the middle of the second valve plate along the radial direction, the valve shaft is clamped between the first arc-shaped groove and the second arc-shaped groove, the first valve plate is provided with the first fixing hole in the first arc-shaped groove, and the second valve plate is provided with the second fixing hole in the second arc-shaped groove.

[0008] Furthermore, an end seat for connecting to a driving device is provided on the top of the valve body, a base is provided on the bottom of the valve body, the valve shaft includes a drive shaft and a rotating shaft which are separately arranged, the upper end of the drive shaft is located in the end seat, and the lower end is located between the first valve plate and the second valve plate, the upper end of the rotating shaft is located between the first valve plate and the second valve plate, and the lower end is located in the base, and the drive shaft and the rotating shaft are arranged at intervals.

[0009] Further, the first fixing holes are provided with two, respectively located at the top and bottom of the first arc-shaped groove; the second fixing holes are provided with two, respectively located at the top and bottom of the second arc-shaped groove; the drive shaft is provided with an upper fixing hole, and the rotating shaft is provided with a lower fixing hole; the upper fixing hole is provided corresponding to the first fixing hole located at the top of the first arc-shaped groove and the second fixing hole located at the top of the second arc-shaped groove; the lower fixing hole is provided corresponding to the first fixing hole located at the bottom of the first arc-shaped groove and the second fixing hole located at the bottom of the second arc-shaped groove.

[0010] Furthermore, the fixing member includes a screw and a nut, and the screw is connected to the nut after passing through the first fixing hole and the second fixing hole.

[0011] Furthermore, a limiting flange is extended inwardly from the inner side of the valve body, and clamping grooves are provided on both end surfaces of the valve seat. The limiting flange is clamped in the clamping grooves to fix the valve seat to the valve body.

[0012] Beneficial effects of the utility model:

[0013] The butterfly valve of the utility model is easy to disassemble and assemble, and adopts the design that the first valve plate and the second valve plate abut against each other and clamp the valve shaft, and are fixed with the fixing piece. This structure makes the disassembly and assembly of the valve plate very simple and quick. When the valve plate needs to be maintained or replaced, it is only necessary to loosen the fixing piece to easily remove the valve plate from the valve shaft without disassembling the entire valve shaft, thereby greatly improving the convenience and efficiency of maintenance.

[0014] The first valve plate and the second valve plate are tightly fixed on the valve shaft by fixing parts. This clamping structure not only ensures a firm connection between the valve plate and the valve shaft, but also effectively prevents the valve plate from loosening or shifting during operation, thereby ensuring the stable operation and sealing performance of the butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the butterfly valve of the utility model which is easy to disassemble and assemble;

[0016] Figure 2 It is a structural schematic diagram of the valve body in the butterfly valve of the utility model which is easy to disassemble and assemble;

[0017] Figure 3 It is a schematic diagram of the structure of the butterfly valve which is easy to disassemble and assemble according to the utility model after the valve body is removed;

[0018] Figure 4 It is a structural schematic diagram (stereoscopic diagram) of the first valve plate and the second valve plate in the butterfly valve which is easy to disassemble and assemble of the utility model;

[0019] Figure 5 It is a structural schematic diagram (explosion diagram) of the first valve plate and the second valve plate in the disassembled butterfly valve of the utility model.

[0020] The names corresponding to the marks in the figure are:

[0021] 1. Valve body, 11. Limit flange, 12. End seat, 13. Base,

[0022] 2. Valve seat, 21. Card groove,

[0023] 3. Valve shaft, 31. Drive shaft, 311. Upper fixing hole, 32. Rotating shaft, 321. Lower fixing hole,

[0024] 4. first valve plate, 41. first arc-shaped groove, 42. first fixing hole,

[0025] 5. second valve plate, 51. second arc groove, 52. second fixing hole,

[0026] 6. Fixing parts, 61. Screws, 62. Nuts. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] like Figures 1 to 5 As shown, the butterfly valve that is easy to disassemble and assemble in this embodiment includes a valve body 1, a valve seat 2, a valve shaft 3, a first valve plate 4 and a second valve plate 5.

[0029] The valve body 1 serves as the main structure of the entire butterfly valve, and a valve seat 2 is installed inside the valve body 1 . A valve shaft 3 is rotatably disposed in the valve body 1 and passes through the valve seat 2 .

[0030] Figure 4 and Figure 5 As shown, the first valve plate 4 and the second valve plate 5 are arranged in abutment with each other and are located together in the valve seat 2. In order to allow the valve shaft 3 to stably pass through and be sandwiched between the two valve plates, a first arc groove 41 is provided in the middle of the first valve plate 4 along the radial direction, and a second arc groove 51 is provided in the middle of the second valve plate 5 along the radial direction. The valve shaft 3 is sandwiched between the first arc groove 41 and the second arc groove 51.

[0031] In order to firmly fix the first valve plate 4 and the second valve plate 5 on the valve shaft 3, the first valve plate 4 is provided with a first fixing hole 42 in the first arc-shaped groove 41, and the second valve plate 5 is provided with a second fixing hole 52 in the second arc-shaped groove 51. More specifically, two groups of the first fixing holes 42 are provided, which are respectively located at the top and the bottom of the first arc-shaped groove 41; similarly, two groups of the second fixing holes 52 are also provided, which are respectively located at the top and the bottom of the second arc-shaped groove 51.

[0032] In particular, Figure 5 As shown, the valve shaft 3 includes a drive shaft 31 and a rotating shaft 32 which are separately arranged. The upper end of the drive shaft 31 is located in the end seat 12 at the top of the valve body 1, and is used to connect with the driving device (not shown in the figure). The lower end of the rotating shaft 32 is located in the base 13 at the bottom of the valve body 1. The drive shaft 31 and the rotating shaft 32 are arranged at intervals in the valve body 1. Such a design enables the valve shaft 3 to withstand sufficient torque and facilitate subsequent disassembly and maintenance.

[0033] An upper fixing hole 311 is provided on the driving shaft 31, and a lower fixing hole 321 is provided on the rotating shaft 32. The upper fixing hole 311 is provided corresponding to the first fixing hole 42 located at the top of the first arc-shaped groove 41 and the second fixing hole 52 located at the top of the second arc-shaped groove 51, and the lower fixing hole 321 is provided corresponding to the first fixing hole 42 located at the bottom of the first arc-shaped groove 41 and the second fixing hole 52 located at the bottom of the second arc-shaped groove 51.

[0034] The fixing member 6 is used to pass through the first fixing hole 42 and the second fixing hole 52, and firmly fix the first valve plate 4 and the second valve plate 5 on the valve shaft 3. In this embodiment, the fixing member 6 includes a screw 61 and a nut 62, wherein the screw 61 passes through the first fixing hole 42 and the second fixing hole 52 and is connected to the nut 62.

[0035] The inner side of the valve body 1 is provided with a limit flange 11 extending inwardly, and the limit flange 11 is used to fix the valve seat 2. The two end surfaces of the valve seat 2 are provided with a clamping groove 21, and the limit flange 11 is clamped in the clamping groove 21, so that the valve seat 2 is firmly fixed in the valve body 1.

[0036] Through the above structure, when the valve plate needs to be maintained or replaced, the first valve plate 4 and the second valve plate 5 can be easily removed from the valve shaft 3 by simply loosening the fixing member 6, without removing the entire valve shaft 3 from the valve body 1. Such a design greatly simplifies the disassembly and assembly process of the butterfly valve and improves the maintenance efficiency.

[0037] In summary, the butterfly valve that is easy to disassemble and assemble of the utility model realizes the rapid disassembly and assembly of the valve plate through its special design structure, which brings great convenience to the user.

[0038] Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the protection scope of the utility model.

Claims

1. A butterfly valve that is easy to disassemble and assemble, characterized in that: The invention comprises a valve body, a valve seat, a valve shaft, a first valve plate and a second valve plate, wherein the valve seat is installed in the valve body, the valve shaft is rotatably arranged in the valve body and passes through the valve seat, the first valve plate and the second valve plate are arranged in abutment with each other and are located in the valve seat, the valve shaft is clamped between the first valve plate and the second valve plate, a first fixing hole is arranged on the first valve plate, a second fixing hole is arranged on the second valve plate, and fixing parts for fixing the first valve plate and the second valve plate to the valve shaft are passed through the first fixing hole and the second fixing hole.

2. The butterfly valve that is easy to disassemble and assemble according to claim 1 is characterized in that: A first arc-shaped groove is provided in the middle of the first valve plate along the radial direction, a second arc-shaped groove is provided in the middle of the second valve plate along the radial direction, the valve shaft is clamped between the first arc-shaped groove and the second arc-shaped groove, the first valve plate is provided with the first fixing hole in the first arc-shaped groove, and the second valve plate is provided with the second fixing hole in the second arc-shaped groove.

3. The butterfly valve that is easy to disassemble and assemble according to claim 2 is characterized in that: An end seat for connecting to a driving device is arranged on the top of the valve body, and a base is arranged on the bottom of the valve body. The valve shaft comprises a driving shaft and a rotating shaft which are separately arranged. The upper end of the driving shaft is located in the end seat, and the lower end is located between the first valve plate and the second valve plate. The upper end of the rotating shaft is located between the first valve plate and the second valve plate, and the lower end is located in the base. The driving shaft and the rotating shaft are arranged at intervals.

4. The butterfly valve that is easy to disassemble and assemble according to claim 3 is characterized in that: There are two first fixing holes, which are respectively located at the top and bottom of the first arc-shaped groove; there are two second fixing holes, which are respectively located at the top and bottom of the second arc-shaped groove; an upper fixing hole is provided on the driving shaft; and a lower fixing hole is provided on the rotating shaft. The upper fixing hole is provided corresponding to the first fixing hole located at the top of the first arc-shaped groove and the second fixing hole located at the top of the second arc-shaped groove; and the lower fixing hole is provided corresponding to the first fixing hole located at the bottom of the first arc-shaped groove and the second fixing hole located at the bottom of the second arc-shaped groove.

5. The butterfly valve that is easy to disassemble and assemble according to any one of claims 1 to 4, characterized in that: The fixing member includes a screw and a nut. The screw passes through the first fixing hole and the second fixing hole and is connected with the nut.

6. The butterfly valve that is easy to disassemble and assemble according to claim 1, characterized in that: A limiting flange is provided inwardly extending from the inner side of the valve body, and clamping grooves are provided on both end surfaces of the valve seat. The limiting flange is clamped in the clamping grooves to fix the valve seat to the valve body.

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