Butterfly valve structure with high sealing performance

Abstract

The utility model discloses a butterfly valve structure with high sealing performance, which comprises a valve body and an adjusting mechanism, the inner wall of the valve body is provided with connecting holes, the inner wall of the valve body is sleeved with a sealing ring, the top end of the valve body is welded with a valve seat, the top end of the valve seat is provided with a valve cover, and the two ends of the inner wall of the valve cover are provided with fixing rods. The adjusting mechanism is arranged on the inner wall of the valve body and comprises a valve plate, a valve rod, a limiting rod and a hand wheel, and the valve plate is arranged on the inner wall of the valve body. According to the butterfly valve structure with the high sealing performance, through the arrangement of the adjusting mechanism, when the flow of liquid in a pipeline is controlled, a hand wheel in the adjusting mechanism is rotated to drive a valve rod and a valve plate to rotate, so that the valve plate is opened, the flow of the liquid in the pipeline is controlled, meanwhile, scale is generated on the valve plate after the butterfly valve structure is used for a long time, and the sealing performance is improved. And the opening and closing efficiency and the sealing effect of the valve plate can be affected, the valve plate can be conveniently disassembled and assembled through the limiting rod, and water scale cleaning or replacement operation is conducted.

Description

Technical Field

[0001] This utility model relates to the technical field of butterfly valves, specifically to a high-sealing butterfly valve structure. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve is characterized by a disc-shaped closing element (valve disc or butterfly plate) that rotates around a valve shaft to open and close. These valves can control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. In pipelines, they primarily function as shut-off and throttling devices. The butterfly valve's opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body to achieve opening, closing, or regulation. Therefore, a high-sealing butterfly valve structure is urgently needed.

[0003] The high-sealing butterfly valve structure currently in use has poor sealing at the connection between the butterfly valve and the pipeline, which easily leads to liquid leakage. In addition, the valve plate of traditional butterfly valves will accumulate scale after long-term use, making it inconvenient to disassemble and clean the valve plate. Utility Model Content

[0004] The purpose of this utility model is to provide a high-sealing butterfly valve structure to solve the problems mentioned in the background art, such as the poor sealing at the connection between the butterfly valve and the pipeline, which easily leads to liquid leakage, and the scale buildup on the valve plate of traditional butterfly valves after long-term use, which makes it inconvenient to disassemble and clean the valve plate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-sealing butterfly valve structure, comprising a valve body and an adjusting mechanism. The inner wall of the valve body is provided with connecting holes, and a sealing ring is fitted onto the inner wall of the valve body. A valve seat is welded to the top of the valve body, and a valve cover is installed on the top of the valve seat. Fixed rods are provided at both ends of the inner wall of the valve cover. The adjusting mechanism is located on the inner wall of the valve body and includes a valve plate, a valve stem, a limit rod, and a handwheel. The valve plate is located on the inner wall of the valve body, a valve stem is installed on the top of the valve plate, a limit rod is installed at the bottom of the valve stem, and a handwheel is installed on the top of the valve stem.

[0006] Preferably, the connecting holes are evenly distributed around the inner wall of the valve body, and each connecting hole has the same diameter.

[0007] Preferably, the outer wall of the sealing ring is tightly fitted to the inner wall of the valve body, and the dimensions of the outer wall of the sealing ring match the dimensions of the inner wall of the valve body.

[0008] Preferably, the valve cover is threadedly connected to the valve seat via a fixing rod, and both the outer wall of the fixing rod and the inner wall of the valve seat are threaded.

[0009] Preferably, the valve plate is threadedly connected to the valve stem via a limiting rod, and both the outer wall of the limiting rod and the inner wall of the valve plate are threaded.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This high-sealing butterfly valve structure, through the set adjustment mechanism, facilitates the control of liquid flow in the pipeline. By turning the handwheel in the adjustment mechanism, the valve stem and valve plate are rotated, causing the valve plate to open, thereby controlling the liquid flow in the pipeline. At the same time, after long-term use, scale will be generated on the valve plate, which will affect the opening and closing efficiency and sealing effect of the valve plate. The limit rod can facilitate the disassembly and assembly of the valve plate for scale cleaning or replacement.

[0012] 2. This high-sealing butterfly valve structure, through the set connection holes and sealing rings, facilitates the splicing and installation of pipelines and butterfly valves. After splicing the flanges of the pipeline to both ends of the valve body, the flanges of the pipeline and the butterfly valve are fixed with bolts. The sealing rings provide a sealing effect at the splice between the pipeline and the butterfly valve, which can prevent liquid in the pipeline from leaking through the splice. Attached Figure Description

[0013] Figure 1 This is a front view of the present utility model;

[0014] Figure 2 This is a drawing of the adjustment mechanism parts of this utility model;

[0015] Figure 3 This utility model Figure 1 Enlarged structural diagram of section A in the middle.

[0016] In the diagram: 1. Valve body; 2. Connecting hole; 3. Sealing ring; 4. Valve seat; 5. Valve cover; 6. Fixing rod; 7. Adjusting mechanism; 701. Valve plate; 702. Valve stem; 703. Limiting rod; 704. Handwheel. Detailed Implementation

[0017] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3This utility model provides a technical solution: a high-sealing butterfly valve structure, including a valve body 1 and an adjusting mechanism 7. The inner wall of the valve body 1 is provided with connecting holes 2, which are evenly distributed around the inner wall of the valve body 1, and each connecting hole 2 has the same diameter. A sealing ring 3 is fitted onto the inner wall of the valve body 1, and the outer wall of the sealing ring 3 is tightly fitted to the inner wall of the valve body 1, with the outer wall size matching the inner wall size of the valve body 1. Through the connecting holes 2 and the sealing ring 3, it is convenient to connect the pipe and the butterfly valve by splicing the flange of the pipe to both ends of the valve body 1, and then fixing the flange of the pipe to the butterfly valve with bolts. Furthermore, the sealing ring 3 provides a sealing effect at the joint between the pipe and the butterfly valve, preventing liquid leakage from the pipe through the joint.

[0019] A valve seat 4 is welded to the top of the valve body 1, and a valve cover 5 is installed on the top of the valve seat 4. A fixing rod 6 is provided at both ends of the inner wall of the valve cover 5. The valve cover 5 is threaded to the valve seat 4 via the fixing rod 6, and both the outer wall of the fixing rod 6 and the inner wall of the valve seat 4 are threaded. An adjusting mechanism 7 is located on the inner wall of the valve body 1. The adjusting mechanism 7 includes a valve plate 701, a valve stem 702, a limit rod 703, and a handwheel 704. The valve plate 701 is located on the inner wall of the valve body 1. The valve stem 702 is installed at the top of the valve plate 701, and a limit rod 703 is installed at the bottom of the valve stem 702. A handwheel 704 is installed at the top of the valve stem 702. The valve plate 701 is connected to the valve seat 4 via the limit rod 703. The rod 703 is threadedly connected to the valve stem 702, and both the outer wall of the limiting rod 703 and the inner wall of the valve plate 701 are threaded. Through the adjustment mechanism 7, it is convenient to control the liquid flow in the pipeline by rotating the handwheel 704 in the adjustment mechanism 7, which drives the valve stem 702 and the valve plate 701 to rotate, thereby opening the valve plate 701 and controlling the liquid flow in the pipeline. At the same time, after long-term use, scale will be generated on the valve plate 701, which will affect the opening and closing efficiency and sealing effect of the valve plate 701. The limiting rod 703 can facilitate the disassembly and assembly of the valve plate 701 for scale cleaning or replacement.

[0020] Working principle: When connecting the pipeline and the butterfly valve, first connect the flange of the pipeline to both ends of the valve body 1, then fix the flange of the pipeline to the butterfly valve with bolts. The sealing ring 3 provides a sealing effect at the joint between the pipeline and the butterfly valve, preventing liquid leakage from the pipeline through the joint. When controlling the liquid flow in the pipeline, rotate the handwheel 704 in the adjusting mechanism 7 to drive the valve stem 702 and the valve plate 701 to rotate, causing the valve plate 701 to open, thereby controlling the liquid flow in the pipeline. After long-term use, scale will form on the valve plate 701, which will affect the opening and closing efficiency and sealing effect of the valve plate 701. The limit rod 703 allows for easy disassembly and assembly of the valve plate 701 for scale cleaning or replacement. This completes the operation process of the high-sealing butterfly valve structure.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-sealing butterfly valve structure, characterized in that, The valve body (1) includes a valve body (1) and an adjusting mechanism (7). The inner wall of the valve body (1) is provided with a connecting hole (2) and a sealing ring (3) is fitted on the inner wall of the valve body (1). A valve seat (4) is welded to the top of the valve body (1) and a valve cover (5) is installed on the top of the valve seat (4). A fixing rod (6) is provided at both ends of the inner wall of the valve cover (5). The adjusting mechanism (7) is located on the inner wall of the valve body (1). The adjusting mechanism (7) includes a valve plate (701), a valve stem (702), a limit rod (703), and a handwheel (704). The valve plate (701) is located on the inner wall of the valve body (1). A valve stem (702) is installed on the top of the valve plate (701) and a limit rod (703) is installed at the bottom of the valve stem (702). A handwheel (704) is installed on the top of the valve stem (702).

2. The high-sealing butterfly valve structure according to claim 1, characterized in that: The connecting holes (2) are evenly distributed around the inner wall of the valve body (1), and each connecting hole (2) has the same diameter.

3. The high-sealing butterfly valve structure according to claim 1, characterized in that: The outer wall of the sealing ring (3) is tightly fitted to the inner wall of the valve body (1), and the outer wall size of the sealing ring (3) matches the inner wall size of the valve body (1).

4. The high-sealing butterfly valve structure according to claim 1, characterized in that: The valve cover (5) is threadedly connected to the valve seat (4) via a fixing rod (6), and both the outer wall of the fixing rod (6) and the inner wall of the valve seat (4) are threaded.

5. The high-sealing butterfly valve structure according to claim 1, characterized in that: The valve plate (701) is threadedly connected to the valve stem (702) via a limiting rod (703), and both the outer wall of the limiting rod (703) and the inner wall of the valve plate (701) are threaded.

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