Butterfly valve with valve plate easy to disassemble

Abstract

The utility model discloses a butterfly valve with a valve plate easy to disassemble, belongs to the technical field of valves, and solves the problems that unnecessary trouble is caused when the valve plate is installed on a valve body, the difficulty of manually assembling the valve plate into the valve body is high and the valve plate is easy to collide with the interior of the valve body due to the fact that a gap is small and the size is close. Comprising a valve body, a valve rod penetrating through the valve body and a valve plate detachably connected with the lower end of the valve rod. When the valve plates are assembled into the valve body, the process is direct and convenient, only the whole valve plate composed of the first valve plate and the second valve plate needs to be placed into the valve body, the valve rod is inserted at the same time, and in the process of connecting the valve plates and the valve body, the first valve plate and the second valve plate are tightly attached along with the gradual increase of the connecting strength between the valve plates and the valve body. After the sealing rubber ring deforms, the sealing rubber ring can be tightly attached to the inner ring of the valve body, the gap between the valve plate and the valve body is effectively reduced, and in addition, the design can further avoid difficulty or damage caused by approximate specifications during installation.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a butterfly valve with an easily detachable valve plate. Background Technology

[0002] A butterfly valve is a type of valve used to regulate fluid flow. Its opening and closing are achieved by rotating a disc called a "disc," which is substantially parallel to the direction of fluid flow. In the fully open position, the disc rotates 90 degrees, facing the direction of fluid flow, thus providing minimal resistance and allowing fluid to pass through. When the disc rotates to the closed position, it is perpendicular to the flow direction, blocking the flow of fluid and closing the valve. Butterfly valves are compact, lightweight, easy to maintain, and quick to operate, and are commonly used in many industries such as water treatment, chemical processing, and food processing as devices for cutting off and regulating the flow of media. Due to their simple structure and relatively low cost, they can also be widely used in large-diameter pipelines. Furthermore, depending on the application requirements, butterfly valves can be manufactured using different materials, such as stainless steel, cast iron, or plastic.

[0003] Normally, when installing the valve plate in the valve body, the valve plate and the valve body's inner diameter cross-section are required to minimize the gap between them, thereby achieving the requirement of a hard seal. However, this also causes unnecessary trouble when installing the valve plate in the valve body. Because the gap is small and the dimensions are close, it is difficult to manually assemble the valve plate into the valve body, and it is easy for it to bump into the valve body.

[0004] Therefore, a butterfly valve with an easily detachable valve plate is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an easy-to-disassemble butterfly valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A butterfly valve with an easily detachable valve plate includes a valve body, a valve stem extending through the valve body, and a valve plate detachably connected to the lower end of the valve stem. The valve plate includes a first valve plate, a second valve plate detachably connected to the valve stem, and a sealing ring located between the two. There is a gap between the outer rings of the first and second valve plates and the inner ring of the valve body. The maximum deformable outer diameter of the sealing ring is greater than the inner diameter of the valve body.

[0008] Preferably, the valve plate two has a through hole, and the valve plate one is fixedly connected with a screw that can pass through the through hole and the lower end of the valve stem. The screw is threaded with an internal hexagonal nut, which is set to abut against the lower end of the valve stem.

[0009] Preferably, the valve plate one is fixedly connected with a connecting ring which can be in contact with the valve plate two, and the connecting ring has elastic deformation performance.

[0010] Preferably, the valve plate two is fixedly connected with a limiting ring which is in contact with the sealing rubber ring on the side facing the valve plate one, and the bottom surface of the limiting ring is provided with a guide inclined surface facing between the valve plate one and the valve plate two.

[0011] Preferably, the lower end of the valve rod is fixedly connected with a connecting pipe in a spherical shape, the opening ends of the connecting pipe are in a planar shape, and the side plane of the connecting pipe is provided with a groove for accommodating the inner hexagonal nut, the valve plate two is fixedly connected with a connecting disc, the connecting disc is fixedly connected with an embedded column, the through hole extends through the connecting disc and the embedded column, and the embedded column is in contact with the other side plane of the connecting pipe.

[0012] Preferably, the inner hexagonal nut is in a circular plate shape, the side of the inner hexagonal nut is provided with an inner hexagonal groove, and the other side of the inner hexagonal nut is provided with a threaded groove which is threadedly connected with the screw rod.

[0013] Preferably, the utility model also comprises a connecting seat fixedly connected with the upper end of the valve rod and a handle fixedly connected with the connecting seat.

[0014] The utility model has the following beneficial effects:

[0015] When assembling the valve plate in the valve body, the valve plate formed by the valve plate one and the valve plate two is put into the valve body, and the valve rod is also inserted into the valve body, and then the valve plate is connected with the valve body, and during the connection process, the firmness of the connection between the valve plate and the valve body is continuously increased, the valve plate one and the valve plate two in the valve plate are increasingly close to each other, so as to extrude the sealing rubber ring between the two to expand outward, so that the sealing rubber ring can be in contact with the inner ring of the valve body after deformation, thereby reducing the gap between the valve plate and the valve body, and the installation of the valve plate can also be ensured without the problem of difficulty in installation or collision due to similar specifications. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a sectional view of the utility model;

[0018] Figure 3 It is Figure 2 It is an enlarged view of the middle A;

[0019] Figure 4 It is Figure 2 It is an enlarged view of the middle B.

[0020] 1, valve body; 2, connecting seat; 3, handle; 4, valve rod; 5, connecting pipe; 6, valve plate one; 7, valve plate two; 8, screw rod; 9, containing space; 10, connecting disc; 11, embedded column; 12, groove; 13, inner hexagonal nut; 14, threaded groove; 15, connecting ring; 16, limiting ring; 17, sealing rubber ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] A valve plate easy-to-disassemble butterfly valve, as shown in Figure 1 and 2 , comprises a valve body 1, a valve rod 4 arranged through the valve body 1, a valve plate detachably connected with the lower end of the valve rod 4, a connecting seat 2 fixedly connected with the upper end of the valve rod 4, and a handle 3 fixedly connected with the connecting seat 2, wherein the handle 3 is arranged obliquely.

[0023] As shown in Figure 3 , the lower end of the valve rod 4 is fixedly connected with a connecting pipe 5 in a spherical shape, the opening ends of the connecting pipe 5 are in a planar shape, and a groove 12 for accommodating an inner hexagonal nut 13 is formed on one side of the connecting pipe 5.

[0024] The valve plate comprises a valve plate one 6, a valve plate two 7 detachably connected with the valve rod 4, and a sealing rubber ring 17 located between the valve plate one 6 and the valve plate two 7, wherein a gap exists between the outer circle of the valve plate one 6 and the valve plate two 7 and the inner circle of the valve body 1, and the maximum deformation outer diameter of the sealing rubber ring 17 is greater than the inner diameter of the valve body 1.

[0025] Specifically, as shown in Figure 3 and 4 , a through hole is formed on one side of the valve plate two 7, a connecting disc 10 is integrally formed on the other side of the valve plate two 7, an embedded column 11 is integrally formed on the connecting disc 10, the through hole extends through the connecting disc 10 and the embedded column 11, the embedded column 11 abuts against the other side plane of the connecting pipe 5, a limiting ring 16 that contacts the sealing rubber ring 17 is integrally formed on the side of the valve plate two 7 facing the valve plate one 6, a guide inclined surface is formed on the bottom surface of the limiting ring 16, and the guide inclined surface is arranged towards the space between the valve plate one 6 and the valve plate two 7.

[0026] The screw rod 8 that can pass through the through hole and the lower end of the valve rod 4 is fixedly connected with the valve plate one 6, the connecting ring 15 that can abut against the valve plate two 7 is fixedly connected with the valve plate one 6, the connecting ring 15 has elastic deformation performance, and the connecting ring 15 is made of rubber material.

[0027] The screw rod 8 is screwed with an internal hexagonal nut 13, the internal hexagonal nut 13 is arranged against the lower end of the valve rod 4, the internal hexagonal nut 13 is a circular plate, and an internal hexagonal groove is formed on one side of the internal hexagonal nut 13, and a threaded groove 14 for screwing with the screw rod 8 is formed on the other side of the internal hexagonal nut 13.

[0028] When the operator needs to assemble the butterfly valve, the valve plate one 6 and the valve plate two 7 are put into the valve body 1, the screw rod 8 on the valve plate one 6 can penetrate the through hole on the valve plate two 7 and pass through the connecting pipe 5, so that the end surface of the embedded column 11 can be attached to the side plane of the connecting pipe 5, and then the internal hexagonal nut 13 is inserted into the groove 12, so that the threaded groove 14 of the internal hexagonal nut 13 is screwed with the screw rod 8, thereby the internal hexagonal nut 13 and the valve plate one 6 can clamp the connecting pipe 5, the embedded column 11, the connecting disc 10 and the valve plate two 7.

[0029] Because there is a gap between the valve plate one 6 and the valve plate two 7 and the inner ring of the valve body 1, when the valve plate is installed, the valve body 1 will not cause obstruction.

[0030] Instead, when the valve plate one 6 and the valve plate two 7 are close to each other, the connecting ring 15 can be deformed in the radial direction, that is, the radial direction, thereby limiting the deformation of the inner ring of the sealing rubber ring 17, so that the sealing rubber ring 17 deforms as much as possible towards the outer ring, thereby reducing the gap between the valve plate and the valve body 1, and ensuring the sealing effect when closed, and the limiting ring 16 is arranged to prevent the sealing rubber ring 17 from being separated from the valve plate one 6 and the valve plate two 7.

[0031] Finally, a containing space 9 is formed between the valve plate one 6 and the valve plate two 7, which is in a hollow state, so that the final mass of the valve plate is small, and the valve rod 4 can rotate more easily.

[0032] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A valve plate easy-to-disassemble butterfly valve comprising a valve body (1), a valve rod (4) arranged through the valve body (1), and a valve plate detachably connected with the lower end of the valve rod (4), characterized in that, The valve plate comprises a valve plate one (6), a valve plate two (7) detachably connected with the valve rod (4), and a sealing rubber ring (17) between the valve plate one (6) and the valve plate two (7), a gap between the outer circle of the valve plate one (6) and the valve plate two (7) and the inner circle of the valve body (1), and the maximum deformation outer diameter of the sealing rubber ring (17) is greater than the inner diameter of the valve body (1).

2. A wafer-style valve according to claim 1, wherein, A through hole is formed on the valve plate two (7), a screw rod (8) is fixedly connected on the valve plate one (6) and can penetrate the through hole and the lower end of the valve rod (4), an inner hexagonal nut (13) is threadedly connected on the screw rod (8), and the inner hexagonal nut (13) is arranged in abutment with the lower end of the valve rod (4).

3. A wafer-style valve according to claim 2, wherein, The valve plate one (6) is fixedly connected with a connecting ring (15) which can abut against the valve plate two (7), and the connecting ring (15) has elastic deformation performance.

4. A wafer wafer valve according to claim 3, wherein The valve plate two (7) is fixedly connected with a limiting ring (16) which is in contact with the sealing rubber ring (17) on the side facing the valve plate one (6), and a guide inclined surface is formed on the bottom surface of the limiting ring (16) and faces the space between the valve plate one (6) and the valve plate two (7).

5. A wafer-style valve according to claim 2, wherein, The lower end of the valve rod (4) is fixedly connected with a connecting pipe (5) in the shape of a ball, the opening ends of the connecting pipe (5) are in the shape of a plane, a groove (12) for accommodating the inner hexagonal nut (13) is formed on one side of the connecting pipe (5), the valve plate two (7) is fixedly connected with a connecting disc (10), the connecting disc (10) is fixedly connected with an embedded column (11), the through hole extends through the connecting disc (10) and the embedded column (11), and the embedded column (11) abuts against the other side plane of the connecting pipe (5).

6. A wafer-style valve according to claim 2, wherein, The inner hexagonal nut (13) is in the shape of a circular plate, an inner hexagonal groove is formed on one side of the inner hexagonal nut (13), and a threaded groove (14) for threadedly connecting with the screw rod (8) is formed on the other side of the inner hexagonal nut (13).

7. A wafer-style valve according to claim 1, wherein, A connecting seat (2) is fixedly connected on the upper end of the valve rod (4), and a handle (3) is fixedly connected on the connecting seat (2).

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