Double-plate butterfly valve with torque protection clutch

Abstract

The double-plate butterfly valve with the torque protection clutch comprises a flange and a valve plate installed in the middle of the flange in an embedded mode, shaft sleeves are arranged at the upper end and the lower end of the flange in a protruding mode, the shaft sleeves and the flange are connected with a cavity, and the valve plate arranged in the middle of the cavity of the flange is installed in an embedded mode through the shaft sleeves at the upper end and the lower end. The valve plate comprises a main valve plate body and an auxiliary valve plate body, fixing pipes are arranged on the upper side and the lower side of the end face of one side of the main valve plate body in a protruding mode, the fixing pipes are embedded and arranged in shaft sleeves at the upper end and the lower end of the flange in an extending mode, and an installation hole is formed in the middle of the main valve plate body. The two ends of the valve rod are embedded in the main valve plate fixing pipe, the lower end of the valve rod extends and protrudes out of the flange lower end shaft sleeve, the lower side of the flange lower end shaft sleeve and the cavity are connected with a limiting piece, and the limiting piece is arranged on the section, arranged in the limiting pipe, of the valve rod.

Description

Technical Field

[0001] The utility model relates to the technical field of valve equipment, in particular to a double-plate butterfly valve with a torque protection clutch. Background Art

[0002] In industrial piping systems, valves are important devices for controlling fluid flow. Traditional butterfly valves often have some performance and structural limitations during use.

[0003] For example, common single-disc butterfly valves may not be able to meet the needs of some complex working conditions in terms of flow control and sealing performance. In some application scenarios that require precise flow regulation, multiple controls, and better sealing effects, the structure of traditional butterfly valves is not flexible and efficient enough, and traditional butterfly valves are also insufficient in torque control and protection. When the fluid pressure in the pipeline system is too high or abnormal conditions occur, it may cause excessive torque, which will damage the valve structure and actuator, affecting the service life and stability of the valve.

[0004] For example, in some chemical production processes, the requirements for fluid flow control are extremely strict. Traditional butterfly valves may affect product quality due to their inability to accurately adjust. In some high-pressure pipeline systems, traditional butterfly valves may be frequently damaged due to excessive torque, increasing maintenance costs and the risk of production interruptions. Therefore, the butterfly valves in the existing technology have technical defects and need to be improved. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a double-plate butterfly valve with more precise flow control, more reliable sealing performance and better torque protection to meet the increasingly complex and diversified requirements of modern industrial pipeline systems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a double-disc butterfly valve with a torque protection clutch, comprising a flange and a valve plate embedded in the middle of the flange, wherein shaft sleeves are protruding from both upper and lower ends of the flange, the shaft sleeves are connected to the flange with a cavity, and a valve plate placed in the middle of the flange cavity is embedded through the shaft sleeves at both upper and lower ends, the valve plate comprises a main valve plate and an auxiliary valve plate, and a fixing pipe is protruding from both upper and lower ends of the end surface of one side of the main valve plate, and the fixing pipe is embedded and extended in the shaft sleeves at both ends of the flange, a mounting hole is opened in the middle of the main valve plate, and the auxiliary valve plate is arranged in the mounting hole, and a valve stem extending upward and downward is arranged in the middle of the end surface of one side of the auxiliary valve plate, respectively, and the two ends of the valve stem are embedded in the fixing pipe of the main valve plate, and the lower end of the valve stem is extended and protrudes outside the shaft sleeve at the lower end of the flange, and the lower side of the shaft sleeve at the lower end of the flange is connected to a limiting member, and a limiting member is arranged on a section of the valve stem placed in the limiting pipe, and the lower end of the valve stem is coaxially connected to an auxiliary valve actuator, and the upper fixing pipe on one side of the main valve plate is coaxially connected to the main valve actuator placed on the upper side of the shaft sleeve at the upper end of the flange.

[0007] Preferably, the diameter of the flange cavity side is equal to the outer diameter of the main valve plate, the diameter of the mounting hole is equal to the diameter of the auxiliary valve plate, the main valve plate is seal-embedded in the flange cavity, and the auxiliary valve plate is seal-embedded in the middle mounting hole of the main valve plate.

[0008] Preferably, fixing tubes protrude from both upper and lower sides of one end surface of the main valve plate, and the fixing tubes are respectively placed at the upper and lower ends of the mounting hole. The fixing tube is integrally connected to the main valve plate. The interior of the fixing tube is hollow and the upper and lower ends are open. The main valve plate is respectively embedded in the shaft sleeves at the upper and lower ends of the flange through the fixing tubes at the upper and lower ends. The main valve plate can rotate with the fixing tube as the axis.

[0009] Preferably, a valve stem is continuously and vertically arranged along the middle of the auxiliary valve plate at the rear end of the auxiliary valve plate, and the valve stem is extended at both upper and lower ends. The auxiliary valve plate is embedded in a fixed tube on one end face of the main valve plate through the valve stem. The auxiliary valve plate is embedded in the fixed frame through the valve stem and can rotate in the mounting hole with the valve stem as the axis.

[0010] Preferably, both front and rear end surfaces of the limiting tube are provided with limiting holes, one end of the valve stem placed in the limiting tube is fixed with a limiting member, and the limiting member protrudes from the limiting hole.

[0011] Preferably, the main valve actuator is coaxially connected to the fixed tube at the upper end of the main valve plate, and the auxiliary valve actuator is coaxially connected to the lower end of the valve stem.

[0012] The beneficial effect of the utility model is that through the coordinated action of the main valve plate and the auxiliary valve plate, more accurate flow regulation can be achieved to meet the fine requirements for fluid flow under different working conditions.

[0013] A torque protector is formed on the valve stem by the cooperation between the limit piece and the limit tube arranged on the valve stem. When an abnormal situation occurs and the torque is excessive, the valve structure and the actuator can be effectively protected from damage, thereby extending the service life of the valve and reducing maintenance costs.

[0014] It also has a dual valve plate setting, which can switch between the main and auxiliary valve plates according to the size of the flow, and control the size of the flow more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the main valve plate structure of the utility model;

[0018] Figure 4This is a schematic diagram of the auxiliary valve plate structure of the utility model.

[0019] Notes in the figure

[0020] 1. Flange; 101. Bushing; 2. Main valve plate; 201. Fixing pipe; 202. Mounting hole; 3. Auxiliary valve plate; 301. Valve stem; 302. Limiting piece; 4. Limiting pipe; 401. Limiting hole; 5. Main valve actuator; 6. Auxiliary valve actuator. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Combination Figure 1-4 The utility model is a double-disc butterfly valve with a torque protection clutch, comprising a flange 1 and a valve plate embedded in the middle of the flange 1, wherein the flange 1 has protruding shaft sleeves 101 at both ends, the shaft sleeve 101 is connected to the flange 1 with a cavity, and a valve plate placed in the middle of the flange 1 cavity is embedded through the shaft sleeves 101 at both ends, the valve plate comprises a main valve plate 2 and a sub-valve plate 3, and the main valve plate 2 has protruding fixing pipes 201 at both ends of the upper and lower ends of the end surface, the fixing pipe 201 is embedded and extended in the flange 1, and a mounting hole 202 is opened in the middle of the main valve plate 2, and the mounting hole 202 is provided in the middle of the main valve plate 2. A secondary valve plate 3 is provided, and a valve stem 301 extending upward and downward is provided in the middle of the end surface of one side of the secondary valve plate 3, and both ends of the valve stem 301 are embedded in the fixing tube 201 of the main valve plate 2, and the lower end of the valve stem 301 is extended and protrudes outside the lower end sleeve 101 of the flange 1, and the lower side of the lower end sleeve 101 of the flange 1 is connected to the cavity with a limiting member 302, and a section of the valve stem 301 is provided with a limiting member 302 in the limiting tube 4, and the lower end of the valve stem 301 is coaxially connected with the secondary valve actuator 6, and the upper end fixing tube 201 on one side of the main valve plate 2 is coaxially connected with the main valve actuator 5 placed on the upper side of the upper end sleeve 101 of the flange 1.

[0023] Preferably, the diameter of the cavity side of the flange 1 is equal to the outer diameter of the main valve plate 2, the diameter of the mounting hole 202 is equal to the diameter of the auxiliary valve plate 3, the main valve plate 2 is sealed and embedded in the cavity of the flange 1, and the auxiliary valve plate 3 is sealed and embedded in the middle mounting hole 202 of the main valve plate 2.

[0024] Furthermore, a fixing tube 201 protrudes from both upper and lower sides of one end surface of the main valve plate 2, and the fixing tube 201 is respectively placed at the upper and lower ends of the mounting hole 202. The fixing tube 201 is integrally connected to the main valve plate 2. The interior of the fixing tube 201 is hollow and the upper and lower ends are opened. The main valve plate 2 is respectively embedded in the shaft sleeves 101 at the upper and lower ends of the flange 1 through the fixing tubes 201 at the upper and lower ends. The main valve plate 2 can rotate with the fixing tube 201 as the axis.

[0025] Furthermore, a valve stem 301 is continuously and vertically arranged at the rear end of the auxiliary valve plate 3 along the middle of the auxiliary valve plate 3, and the valve stem 301 is extended at both upper and lower ends. The auxiliary valve plate 3 is embedded in the fixed tube 201 on the end face of one side of the main valve plate 2 through the valve stem 301. The auxiliary valve plate 3 is embedded in the fixed frame through the valve stem 301 and can rotate in the mounting hole 202 with the valve stem 301 as the axis.

[0026] Furthermore, both front and rear end surfaces of the limiting tube 4 are provided with limiting holes 401 , and one end of the valve stem 301 placed in the limiting tube 4 is fixed with a limiting member 302 , and the limiting member 302 protrudes from the limiting hole 401 .

[0027] Furthermore, the main valve actuator 5 is coaxially connected to the fixed tube 201 at the upper end of the main valve plate 2 , and the auxiliary valve actuator 6 is coaxially connected to the lower end of the valve stem 301 .

[0028] Through the coordinated action of the main valve plate 2 and the auxiliary valve plate 3, more precise flow regulation can be achieved to meet the precise requirements for fluid flow under different working conditions.

[0029] The valve stem 301 is formed into a torque protector by the cooperation between the limit piece 302 arranged on the valve stem 301 and the limit tube 4. When an abnormal situation occurs and the torque is excessive, the valve structure and the actuator can be effectively protected from damage, thereby extending the service life of the valve and reducing maintenance costs.

[0030] At the same time, it has a double valve plate setting, which can switch between the main and auxiliary valve plates 3 according to the size of the flow, so as to more accurately control the size of the flow.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A double-disc butterfly valve with a torque protection clutch, comprising a flange (1) and a valve plate embedded in the middle of the flange (1), characterized in that: The flange (1) has shaft sleeves (101) protruding from both upper and lower ends. The shaft sleeves (101) are connected to the flange (1) and the cavity. A valve plate located in the middle of the flange (1) cavity is embedded through the shaft sleeves (101) at the upper and lower ends. The valve plate includes a main valve plate (2) and an auxiliary valve plate (3). A fixing tube (201) protrudes from the upper and lower ends of one end surface of the main valve plate (2). The fixing tube (201) is embedded and extended in the shaft sleeves (101) at the upper and lower ends of the flange (1). A mounting hole (202) is opened in the middle of the main valve plate (2). The auxiliary valve plate (3) is arranged in the mounting hole (202). The auxiliary valve plate (3) is arranged in the middle of one end surface of the auxiliary valve plate (3). A valve stem (301) extends upward and downward, with both ends of the valve stem (301) embedded in a fixing tube (201) of a main valve plate (2), the lower end of the valve stem (301) extending and protruding outside a shaft sleeve (101) at a lower end of the flange (1), a limiting member (302) is connected to the cavity at the lower side of the shaft sleeve (101) at the lower end of the flange (1), a limiting member (302) is provided on a section of the valve stem (301) disposed in the limiting tube (4), the lower end of the valve stem (301) is coaxially connected to an auxiliary valve actuator (6), and the upper fixing tube (201) on one side of the main valve plate (2) is coaxially connected to a main valve actuator (5) disposed on the upper side of the shaft sleeve (101) at the upper end of the flange (1).

2. The double-disc butterfly valve with torque protection clutch according to claim 1, characterized in that: The diameter of the flange (1) cavity side is equal to the outer diameter of the main valve plate (2), the diameter of the mounting hole (202) is equal to the diameter of the auxiliary valve plate (3), the main valve plate (2) is sealed and embedded in the flange (1) cavity, and the auxiliary valve plate (3) is sealed and embedded in the middle mounting hole (202) of the main valve plate (2).

3. The double-disc butterfly valve with torque protection clutch according to claim 1, characterized in that: A fixing tube (201) protrudes from both upper and lower sides of the end surface of one side of the main valve plate (2). The fixing tube (201) is respectively placed at the upper and lower ends of the mounting hole (202). The fixing tube (201) is integrally connected to the main valve plate (2). The fixing tube (201) is hollow inside and has openings at the upper and lower ends. The main valve plate (2) is respectively embedded in the shaft sleeves (101) at the upper and lower ends of the flange (1) through the fixing tubes (201) at the upper and lower ends. The main valve plate (2) can perform rotational movement with the fixing tube (201) as the axis.

4. The double-disc butterfly valve with torque protection clutch according to claim 1, characterized in that: A valve stem (301) is vertically and continuously arranged at the rear end of the auxiliary valve plate (3) along the middle of the auxiliary valve plate (3); the valve stem (301) is extended at both upper and lower ends; the auxiliary valve plate (3) is embedded in a fixed tube (201) on one end face of the main valve plate (2) through the valve stem (301); the auxiliary valve plate (3) is embedded in a fixed frame through the valve stem (301) and can rotate in the mounting hole (202) with the valve stem (301) as the axis.

5. The double-disc butterfly valve with torque protection clutch according to claim 1, characterized in that: The limiting tube (4) has limiting holes (401) on both front and rear end surfaces, and a limiting member (302) is fixed to one end of the valve stem (301) placed in the limiting tube (4), and the limiting member (302) protrudes from the limiting hole (401).

6. The double-disc butterfly valve with torque protection clutch according to claim 1, characterized in that: The main valve actuator (5) is coaxially connected to the fixed tube (201) at the upper end of the main valve plate (2), and the auxiliary valve actuator (6) is coaxially connected to the lower end of the valve stem (301).

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