Anti-vibration failure butterfly valve

Abstract

The utility model relates to an anti-seismic trouble-free butterfly valve. Including valve body, valve rod subassembly and butterfly plate, valve rod subassembly includes the upper valve rod and lower valve rod on the same axial line, the upper end and lower end of valve body are equipped with upper mounting hole and lower mounting hole respectively, the upper valve rod is set up in the upper mounting hole through the upper shaft sleeve, the lower end of upper valve rod is fixedly connected with butterfly plate upper end, the upper end of upper valve rod is connected with drive arrangement, the butterfly plate is integral type structure, the valve seat of being located butterfly plate one side is equipped in the valve body, the valve seat and valve body are integral structure, the outer diameter surface of butterfly plate is equipped with the sealing surface cooperation with valve seat. The utility model discloses simple structure, and the butterfly plate is integral type structure, and the valve seat and valve body are integral structure, effectively avoid the phenomenon that the bolt falls into the pipeline and breaks down, and the safety is high.

Description

Technical Field

[0001] This utility model relates to a butterfly valve, and more particularly to a shock-resistant and trouble-free butterfly valve. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve that can be used for on / off control of low-pressure pipeline media. A butterfly valve is a type of valve in which the closing element (valve disc or butterfly plate) is a disc that rotates around the valve shaft to achieve opening and closing.

[0003] Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. They primarily function as shut-off and throttling devices in pipelines. A butterfly valve's opening and closing element is a disc-shaped disc that rotates around its own axis within the valve body, thereby achieving opening, closing, or regulation.

[0004] The existing butterfly valve has a sealing ring installed on the butterfly plate, and a pressure plate is provided on the outside of the sealing ring. The pressure plate is connected to the butterfly plate by bolts and clamps the sealing ring. A valve seat pressure plate is provided on the outside of the valve seat and is connected to the valve body by bolts. During use, the bolts are prone to loosening and falling off, affecting the sealing effect and even causing production failure. Utility Model Content

[0005] To address the aforementioned shortcomings, the purpose of this utility model is to provide a shock-resistant and trouble-free butterfly valve with a simple structure, an integrated butterfly plate, and a valve seat and valve body that are integrally formed, eliminating the risk of loose or falling bolts on traditional butterfly plates and making it less prone to malfunctions.

[0006] Therefore, the technical solution adopted by this utility model is:

[0007] A shock-resistant, fault-free butterfly valve includes a valve body, a valve stem assembly, and a butterfly plate. The valve stem assembly includes an upper valve stem and a lower valve stem on the same axis. The upper and lower ends of the valve body are respectively provided with an upper mounting hole and a lower mounting hole. The upper valve stem is inserted into the upper mounting hole through an upper bushing. The lower end of the upper valve stem is fixedly connected to the upper end of the butterfly plate. A driving device is connected to the upper end of the upper valve stem. The butterfly plate is an integral structure. The valve body is provided with a valve seat located on one side of the butterfly plate. The valve seat and the valve body are an integral structure. The outer diameter surface of the butterfly plate is provided with a sealing surface that mates with the valve seat.

[0008] As a further improvement to the above technical solution, the valve seat and valve body are an integral structure.

[0009] As a further improvement to the above technical solution, the inner diameter surface of the inlet end of the valve body is provided with an annular step, the valve seat is installed at the annular step, and the outer side of the valve seat is welded to the inner wall of the valve body.

[0010] As a further improvement to the above technical solution, a stepped hole is provided in the upper part of the upper mounting hole, a packing seat ring is provided in the stepped hole and fitted onto the upper valve stem, a packing is provided in the stepped hole at the upper part of the packing seat ring, a packing cap is provided at the upper end of the packing and fitted onto the upper valve stem, a packing pressure plate is provided above the packing pressure plate and fitted onto the upper valve stem, and the packing pressure plate is fixedly connected to the upper end of the valve body by bolts around its perimeter.

[0011] As a further improvement to the above technical solution, the upper end of the valve body is provided with a bracket, and the driving device is mounted on the bracket. The driving device is a drive motor.

[0012] As a further improvement to the above technical solution, the upper end of the lower valve stem is fixedly connected to the lower end of the butterfly plate, and the lower end of the lower valve stem is set in the lower mounting hole through the lower bushing. A cover plate is installed at the bottom of the lower mounting hole.

[0013] The advantages of this utility model are:

[0014] 1. The butterfly plate adopts an integrated structure, without the traditional pressure plate, sealing ring and related bolts and screws, effectively preventing failures caused by loosening or falling off of bolts and screws.

[0015] 2. The valve seat and valve body are integrated into one structure without any bolts, effectively avoiding the malfunction caused by loose bolts falling into the pipeline. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the valve seat and valve body of this utility model being an integral structure.

[0017] Figure 2 This is a schematic diagram of the valve seat and valve body of this utility model welded into an integral structure.

[0018] In the diagram, 1 is the valve body, 2 is the butterfly plate, 3 is the upper valve stem, 4 is the lower valve stem, 5 is the upper bushing, 6 is the drive unit, 7 is the valve seat, 8 is the packing seat ring, 9 is the packing, 10 is the packing gland, 11 is the packing pressure plate, 12 is the bracket, 13 is the lower bushing, and 14 is the cover plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] An anti-vibration, fault-free butterfly valve includes a valve body 1, a valve stem assembly, and a butterfly plate 2. The valve stem assembly includes an upper valve stem 3 and a lower valve stem 4 on the same axis. The upper and lower ends of the valve body 1 are respectively provided with an upper mounting hole and a lower mounting hole. The upper valve stem 3 is inserted into the upper mounting hole through an upper bushing 5. The lower end of the upper valve stem 3 is fixedly connected to the upper end of the butterfly plate 2. The upper end of the upper valve stem 3 is connected to a driving device 6. The butterfly plate 2 is an integral structure. The valve body 1 is provided with a valve seat 7 located on one side of the butterfly plate 2. The valve seat 7 and the valve body 1 are an integral structure. The outer diameter surface of the butterfly plate 2 is provided with a sealing surface that mates with the valve seat 7.

[0021] As a further improvement to the above technical solution, the valve seat 7 and the valve body 1 are an integral structure, that is, an annular boss is directly machined on the inner wall of the valve body 1 to form the valve seat 7.

[0022] As a further improvement to the above technical solution, the inner diameter surface of the inlet end of the valve body 1 is provided with an annular step, the valve seat 7 is installed at the annular step, and the outer side of the valve seat 7 is welded to the inner wall of the valve body 1 as a whole.

[0023] As a further improvement to the above technical solution, a stepped hole is provided in the upper part of the upper mounting hole, and a packing seat ring 8 is provided in the stepped hole for fitting the upper valve stem 3. A packing 9 is provided in the stepped hole at the upper part of the packing seat ring 8. A packing cap 10 is provided at the upper end of the packing 9 for fitting the upper valve stem 3. A packing pressure plate 11 is provided above the packing cap 10 for fitting the upper valve stem 3. The packing pressure plate 11 is fixedly connected to the upper end of the valve body 1 by bolts around its perimeter.

[0024] As a further improvement to the above technical solution, the upper end of the valve body 1 is provided with a bracket 12, and the driving device 6 is mounted on the bracket 12. The driving device 6 is a drive motor.

[0025] As a further improvement to the above technical solution, the upper end of the lower valve stem 4 is fixedly connected to the lower end of the butterfly plate 2, and the lower end of the lower valve stem 4 is set in the lower mounting hole through the lower bushing 13. A cover plate 14 is installed at the bottom of the lower mounting hole.

[0026] During operation, the drive motor at the upper end of the upper valve stem drives the butterfly plate to rotate around the axis of the upper valve stem. The butterfly plate is an integral structure, which avoids the risk of pipeline failure caused by loose or falling bolts on traditional butterfly plates. The valve seat and valve body are an integral structure without any bolt connection, which effectively avoids the phenomenon of traditional bolts loosening, falling into the pipeline and causing failure.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A shock-resistant, fault-free butterfly valve, comprising a valve body, a valve stem assembly, and a butterfly plate, wherein the valve stem assembly includes an upper valve stem and a lower valve stem on the same axis, the upper end and lower end of the valve body are respectively provided with an upper mounting hole and a lower mounting hole, the upper valve stem is inserted into the upper mounting hole through an upper bushing, the lower end of the upper valve stem is fixedly connected to the upper end of the butterfly plate, and a driving device is connected to the upper end of the upper valve stem, characterized in that, The butterfly plate is an integral structure, and the valve body is provided with a valve seat located on one side of the butterfly plate. The valve seat and the valve body are an integral structure, and the outer diameter surface of the butterfly plate is provided with a sealing surface that cooperates with the valve seat.

2. The anti-vibration, fault-free butterfly valve according to claim 1, characterized in that, The valve seat and valve body are an integral structure.

3. The anti-vibration, fault-free butterfly valve according to claim 1, characterized in that, The inner diameter surface of the inlet end of the valve body is provided with an annular step, and the valve seat is installed at the annular step. The outer side of the valve seat is welded to the inner wall of the valve body.

4. The anti-vibration, fault-free butterfly valve according to claim 1, characterized in that, The upper mounting hole has a stepped hole at the top, and a packing seat ring is provided in the stepped hole to fit the upper valve stem. The packing seat ring is provided with packing material located in the stepped hole at the top. The packing material is provided with a packing gland fitted on the upper valve stem at the top end. A packing pressure plate is provided on the upper valve stem above the packing gland. The packing pressure plate is fixedly connected to the upper end of the valve body by bolts around its perimeter.

5. The anti-vibration, fault-free butterfly valve according to claim 1, characterized in that, The valve body is provided with a bracket at the upper end, and the drive device is mounted on the bracket. The drive device is a drive motor.

6. The anti-vibration, fault-free butterfly valve according to claim 1, characterized in that, The upper end of the lower valve stem is fixedly connected to the lower end of the butterfly plate, and the lower end of the lower valve stem is set in the lower mounting hole through the lower bushing. A cover plate is installed at the bottom of the lower mounting hole.

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