CN216666530U

CN216666530U - Wear-resisting long-life butterfly valve structure

Info

Publication number: CN216666530U
Application number: CN202123101621.3U
Authority: CN
Inventors: 王垂宏; 王英博; 王泽�; 龚长龙; 党安荣
Original assignee: Jiangsu Kaien Automatic Control Technology Co ltd
Current assignee: Jiangsu Kaien Automatic Control Technology Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-06-03
Anticipated expiration: 2031-12-06

Abstract

The utility model relates to a wear-resistant long-life butterfly valve structure which comprises a valve body, a butterfly plate and a valve rod, wherein the valve rod penetrates through a central hole of the butterfly plate and is movably connected with the valve body; the edge of the plate body of the butterfly plate is provided with a flange part, the flange part is arranged along the arc-shaped profile of the butterfly plate, a reinforcing part is arranged at the connection transition part of the flange part and the plate body, one side of the flange part, which is far away from the plate body, is provided with an end surface groove, a first wear-resistant alloy layer is arranged in the end surface groove, and a second wear-resistant alloy layer is arranged in the sawtooth groove; and a wear-resisting ring is arranged in the valve body, and the position of the wear-resisting ring corresponds to that of the butterfly plate. The wear-resistant long-life butterfly valve structure improves the structure of the butterfly valve, enhances the structural strength of the butterfly valve, and ensures that the butterfly valve is not deformed under the action of pressure and in a long-term use state; meanwhile, the wear resistance at the edge of the steel pipe is enhanced, excessive wear can not occur under the repeated opening and closing friction and long-term use state, and the service life is prolonged.

Description

Wear-resisting long-life butterfly valve structure

Technical Field

The utility model relates to a butterfly valve, in particular to a wear-resistant long-life butterfly valve structure.

Background

The butterfly valve is a regulating valve with simple structure, and can be used for switching control of low-pressure pipeline media, namely, the butterfly valve is a valve which is opened and closed by rotating around a valve shaft by taking a valve clack or a butterfly plate of a closing part as a disk. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

The butterfly plate of current butterfly valve is mostly disk form sheet metal, and in long-term switching use, the edge wearing and tearing that the friction can lead to the butterfly plate, and pressure and friction can lead to the butterfly plate to warp. No matter the edge is worn or the butterfly plate is deformed, a gap is generated between the edge of the butterfly plate and the inner wall of the valve body, so that the butterfly valve is invalid, and the service life cannot be ensured.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is:

the wear-resistant long-life butterfly valve structure is designed, the structure of the butterfly valve is improved, the structural strength of the butterfly valve is enhanced, and the butterfly valve is ensured not to deform under the action of pressure and in a long-term use state; meanwhile, the wear resistance at the edge of the steel pipe is enhanced, excessive wear can not occur under the repeated opening and closing friction and long-term use state, and the service life is prolonged.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a wear-resistant long-life butterfly valve structure comprises a valve body, a butterfly plate and a valve rod, wherein connecting flanges are arranged at two ends of the valve body, the butterfly plate is positioned in the valve body, the valve rod penetrates through a central hole of the butterfly plate, and the valve rod is movably connected with the valve body; the edge of the plate body of the butterfly plate is provided with a flange part, the flange part is arranged along the arc-shaped profile of the butterfly plate, the connection transition part of the flange part and the plate body is provided with a reinforcing part, one side of the flange part, which is far away from the plate body, is provided with an end surface groove, a first wear-resistant alloy layer is arranged in the end surface groove, a sawtooth groove is arranged in the first wear-resistant alloy layer, a second wear-resistant alloy layer is arranged in the sawtooth groove, and one end, which is far away from the first wear-resistant alloy layer, of the second wear-resistant alloy layer is in the shape of an arc surface; and a wear-resisting ring is arranged in the valve body, and the position of the wear-resisting ring corresponds to that of the butterfly plate.

Further, the flange part and the plate body are integrally formed, and the thickness of the flange part is larger than that of the plate body.

Further, the end surface groove is embodied as a groove and is provided extending along the contour of the flange portion.

Further, the sawtooth grooves are grooves and are arranged along the outline of the first wear-resistant alloy layer in an extending mode; the bottom surface of the sawtooth groove is in a sawtooth shape.

Further, the first wear-resistant alloy layer is made of nickel-tungsten alloy; the second wear-resistant alloy layer is made of chromium carbide alloy.

Furthermore, the wear-resistant ring is annular, and the wear-resistant ring is made of high manganese alloy.

The utility model has the beneficial effects that: a wear-resisting long-life butterfly valve structure, improve the structure of the butterfly valve, add flange portion and equiangular annular array of reinforcement, strengthen its structural strength, guarantee under the pressure and long-term use state not deform; simultaneously add first wear-resisting alloy-layer, second wear-resisting alloy-layer and wear-resisting ring, strengthen the wearability of its edge, ensure can not appear excessive wearing and tearing under butterfly plate switching friction repeatedly and long-term use state, can prolong the life of butterfly valve by a wide margin, reduce maintenance, change the frequency.

Drawings

Fig. 1 is a schematic view of the overall structure of a wear-resistant long-life butterfly valve structure according to the present invention.

Fig. 2 is a schematic perspective view of a butterfly plate of a wear-resistant long-life butterfly valve structure according to the present invention.

Fig. 3 is a schematic cross-sectional view of the edge of a butterfly plate of the wear-resistant long-life butterfly valve structure according to the present invention.

In the figure: 1. a valve body; 2. a connecting flange; 3. a butterfly plate; 31. a plate body; 32. a flange portion; 33. a reinforcing portion; 34. an end face groove; 35. a first wear-resistant alloy layer; 36. a second wear-resistant alloy layer; 37. a sawtooth groove; 4. a valve stem; 5. a wear ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 3, a wear-resistant long-life butterfly valve structure comprises a valve body 1, a butterfly plate 3 and a valve rod 4, wherein two ends of the valve body 1 are provided with connecting flanges 2, the butterfly plate 3 is located in the valve body 1, the valve rod 4 penetrates through a central hole of the butterfly plate 3 and is movably connected with the valve body 1, and the valve rod 4 is used for driving the butterfly plate 3 to rotate so as to close and open a valve; the edge of the plate body 31 of the butterfly plate 3 is provided with a flange portion 32, the flange portion 32 is arranged along the arc-shaped profile of the butterfly plate 3, the flange portion 32 is used for enhancing the wear-resisting property of the edge of the plate body 31 and enhancing the structural strength of the plate body 31, a reinforcing portion 33 is arranged at the connection transition position of the flange portion 32 and the plate body 31, the reinforcing portion 33 is used for enhancing the structural strength of the plate body 31, one side of the flange portion 32, which is far away from the plate body 31, is provided with an end surface groove 34, a first wear-resistant alloy layer 35 is arranged in the end surface groove 34, the end surface groove 34 is used for accommodating the first wear-resistant alloy layer 35, a sawtooth groove 37 is arranged in the first wear-resistant alloy layer 35, a second wear-resistant alloy layer 36 is arranged in the sawtooth groove 37, the sawtooth groove 37 is used for accommodating the second wear-resistant alloy layer 36, and one end, which is far away from the first wear-resistant alloy layer 35, of the second wear-resistant alloy layer 36 is an arc surface; the valve comprises a valve body 1 and is characterized in that a wear-resisting ring 5 is arranged in the valve body 1, the position of the wear-resisting ring 5 corresponds to that of a butterfly plate 3, and the wear-resisting ring 5 is used for being matched with the butterfly plate 3 to close the valve.

The flange 32 is integrally formed with the plate 31, and the flange 32 has a thickness greater than that of the plate 31 and a T-shaped cross section, thereby ensuring the structural strength of the edge profile of the plate 31.

The end surface groove 34 is embodied as a groove and extends along the contour of the flange portion 32, i.e. the first wear alloy layer 35 surrounds the plate body 31.

The sawtooth grooves 37 are grooves and are arranged to extend along the profile of the first wear-resistant alloy layer 35, i.e. the second wear-resistant alloy layer 36 surrounds the first wear-resistant alloy layer 35; the bottom surface of the saw-toothed groove 37 is saw-toothed, so that the peeling strength between the second wear-resistant alloy layer 36 and the first wear-resistant alloy layer 35 can be ensured, and the second wear-resistant alloy layer 36 is prevented from falling off from the first wear-resistant alloy layer 35.

The first wear-resistant alloy layer 35 is made of nickel-tungsten alloy and has high wear resistance; the second wear-resistant alloy layer 36 is made of chromium carbide alloy and has high wear resistance.

The wear-resistant ring 5 is annular, and the wear-resistant ring 5 is made of high-manganese alloy and has high wear resistance.

The working principle of the utility model is as follows: the flange part 32 is positioned at the edge of the plate body 31 of the butterfly plate 3 and is used for enhancing the structural strength of the plate body 31; at the same time, the reinforcement 33, in the form of an equally spaced annular array, also serves to reinforce the structural strength; when the valve needs to be opened, the valve rod 4 drives the plate body 31 of the butterfly plate 3 to rotate relative to the valve body 1, and the second wear-resistant alloy layer 36 and the inner wall of the wear-resistant ring 5 move relatively and are separated, so that the valve can be opened; when the valve needs to be closed, the valve rod 4 drives the plate body 31 of the butterfly plate 3 to rotate reversely relative to the valve body 1, and the second wear-resistant alloy layer 36 and the inner wall of the wear-resistant ring 5 move relatively and are tightly closed, so that the valve can be closed;

in the opening and closing processes, contact friction occurs between the second wear-resistant alloy 36 and the inner wall of the wear-resistant ring 5, because the second wear-resistant alloy 36 and the wear-resistant ring 5 are made of high wear-resistant materials, and when the second wear-resistant alloy 36 is slightly worn, the first wear-resistant alloy layer 35 is in contact with the inner wall of the wear-resistant ring 5, further wear of the second wear-resistant alloy 36 can be avoided, and therefore, the valve can bear opening and closing friction for a large number of times, and the service life of the valve can be ensured.

The above examples are intended to further illustrate the present invention, but are not intended to limit the utility model to these specific embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be understood to be within the protection scope of the present invention.

Claims

1. A wear-resistant long-life butterfly valve structure comprises a valve body (1), a butterfly plate (3) and a valve rod (4), wherein connecting flanges (2) are arranged at two ends of the valve body (1), the butterfly plate (3) is located in the valve body (1), the valve rod (4) penetrates through a center hole of the butterfly plate (3), and the valve rod (4) is movably connected with the valve body (1); the method is characterized in that: a flange part (32) is arranged at the edge of a plate body (31) of the butterfly plate (3), the flange part (32) is arranged along the arc-shaped outline of the butterfly plate (3), a reinforcing part (33) is arranged at the connection transition part of the flange part (32) and the plate body (31), an end surface groove (34) is arranged on one side, away from the plate body (31), of the flange part (32), a first wear-resistant alloy layer (35) is arranged in the end surface groove (34), a sawtooth groove (37) is arranged in the first wear-resistant alloy layer (35), a second wear-resistant alloy layer (36) is arranged in the sawtooth groove (37), and one end, away from the first wear-resistant alloy layer (35), of the second wear-resistant alloy layer (36) is an arc surface; a wear-resistant ring (5) is arranged in the valve body (1), and the position of the wear-resistant ring (5) corresponds to that of the butterfly plate (3).

2. A wear-resistant long-life butterfly valve structure according to claim 1, characterized in that: the flange part (32) is integrally formed with the plate body (31), and the thickness of the flange part (32) is larger than that of the plate body (31).

3. A wear-resistant long-life butterfly valve structure according to claim 2, characterized in that: the end surface groove (34) is a groove and extends along the contour of the flange portion (32).

4. A wear-resistant long-life butterfly valve structure according to claim 3, characterized in that: the sawtooth grooves (37) are grooves and are arranged along the outline of the first wear-resistant alloy layer (35); the bottom surface of the sawtooth groove (37) is in a sawtooth shape.

5. A wear-resistant long-life butterfly valve structure according to claim 4, characterized in that: the first wear-resistant alloy layer (35) is made of nickel-tungsten alloy; the second wear-resistant alloy layer (36) is made of chromium carbide alloy.

6. A wear-resistant long-life butterfly valve structure according to claim 5, characterized in that: the wear-resistant ring (5) is annular, and the wear-resistant ring (5) is made of high-manganese alloy.