A butterfly valve with low resistance and high sealing performance

Abstract

This utility model discloses a low-resistance, high-sealing butterfly valve, relating to the field of butterfly valve technology. The utility model includes a detachable valve body with a stepped, sloping inner wall. A valve stem is rotatably inserted into the valve body, and a butterfly valve core is fixedly fitted onto the surface of the valve stem. A drive assembly is located at the top of the detachable valve body. In this utility model, the drive assembly drives the valve stem to rotate the butterfly valve core within the detachable valve body, thereby controlling the opening and closing of the butterfly valve. An elastic component is located at the end of the stepped sloping section, through which a corrosion-resistant sealing strip is elastically connected. When the butterfly valve is closed, the corrosion-resistant sealing strip makes tight contact with the surface of the butterfly valve core, compressing the elastic component to form a seal between the butterfly valve core and the detachable valve body, preventing fluid leakage.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically to a butterfly valve with low resistance and high sealing performance. Background Technology

[0002] In industrial fluid control systems, butterfly valves are widely used due to their advantages such as compact structure, easy operation, and light weight.

[0003] When existing butterfly valves are closed, there is a tiny gap between the edge of the valve core and the valve seat. These gaps can easily lead to leakage when high-pressure fluids pass through, especially in fluids containing particulate impurities, where the gaps will be further enlarged, seriously affecting the sealing performance of the butterfly valve.

[0004] Therefore, a butterfly valve with low resistance and high sealing performance is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a butterfly valve with low resistance and high sealing performance in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A low-resistance, high-sealing butterfly valve includes a detachable assembly valve body. The inner wall of the detachable assembly valve body is provided with a sloping step. A valve stem is rotatably inserted into the detachable assembly valve body. A butterfly valve core is fixedly sleeved on the surface of the valve stem. A drive assembly is provided at the top of the detachable assembly valve body to drive the valve stem and rotate the butterfly valve core inside the detachable assembly valve body to control its opening and closing. An elastic component is provided at the end of the sloping step, and the elastic component is connected to a corrosion-resistant sealing strip.

[0008] Furthermore, when the butterfly valve core is closed, the surface of its corrosion-resistant sealing strip comes into contact with the surface of the butterfly valve core, at which point the elastic component is in a compressed state.

[0009] Furthermore, the drive assembly includes a housing fixedly mounted on the top surface of the detachable assembled valve body. Rotary shafts are rotatably inserted into both side walls of the housing, and a handwheel knob is fixedly mounted at the end of the rotating shaft. A worm gear is fixedly sleeved on the surface of the handwheel knob. The valve stem and the detachable assembled valve body are rotatably inserted into the housing, and a worm wheel is fixedly sleeved on the surface of the valve stem, meshing with the worm gear.

[0010] Furthermore, the surface of the butterfly valve core has an arc-shaped streamlined structure, and the surface of the butterfly valve core is smooth.

[0011] Furthermore, the elastic component includes a limiting frame fixedly installed on the end face of the sloping step, and a rigid arc strip is movably inserted into the limiting frame. Several sets of springs are fixedly connected between the end face of the sloping step and the rigid arc strip, and a corrosion-resistant sealing strip is fixedly installed on the end face of the rigid arc strip.

[0012] Furthermore, the end face of the corrosion-resistant sealing strip has an arc-shaped structure, and when the butterfly valve core is closed, the corrosion-resistant sealing strip is tightly fitted with the arc-shaped streamlined part of the butterfly valve core.

[0013] The beneficial effects of this utility model are as follows:

[0014] The butterfly valve is controlled by a drive assembly that drives the valve stem to rotate within the detachable valve body. The end of the stepped slope is equipped with an elastic component, through which a corrosion-resistant sealing strip is elastically connected. When the butterfly valve is closed, the corrosion-resistant sealing strip comes into close contact with the surface of the butterfly valve core, compressing the elastic component to form a seal between the butterfly valve core and the detachable valve body, preventing fluid leakage. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a side view of the present invention;

[0017] Figure 3 This is a partial schematic diagram of the present invention;

[0018] Figure 4 This is a bottom sectional view of the present invention;

[0019] Figure 5 This is a utility model Figure 4 Enlarged view of part A;

[0020] Reference numerals: 1. Demountable valve body; 11. Sloping step; 2. Drive assembly; 201. Housing; 202. Shaft; 203. Handwheel knob; 204. Worm gear; 205. Worm wheel; 3. Valve stem; 4. Butterfly valve core; 5. Elastic component; 501. Limit frame; 502. Spring; 503. Rigid arc strip; 6. Corrosion-resistant sealing strip. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figures 1 to 5 As shown, a low-resistance, high-sealing butterfly valve includes a detachable assembly valve body 1. The inner wall of the detachable assembly valve body 1 is provided with a sloping step 11. A valve stem 3 is rotatably inserted into the detachable assembly valve body 1. A butterfly valve core 4 is fixedly sleeved on the surface of the valve stem 3. A drive assembly 2 is provided at the top of the detachable assembly valve body 1, which drives the valve stem 3 to rotate the butterfly valve core 4 inside the detachable assembly valve body 1, thereby controlling its opening and closing. Figures 1 to 3 As shown, specifically, the drive assembly 2 includes a housing 201 fixedly installed on the top surface of the detachable assembled valve body 1. The two side walls of the housing 201 are rotatably connected to a rotating shaft 202, and a handwheel knob 203 is fixedly installed at the end of the rotating shaft 202. A worm gear 204 is fixedly sleeved on the surface of the handwheel knob 203. The valve stem 3 and the detachable assembled valve body 1 are rotatably connected to the housing 201, and a worm wheel 205 is fixedly sleeved on the surface of the valve stem 3. The worm wheel 205 meshes with the worm gear 204.

[0026] More specifically, the handwheel knob 203 drives the rotating shaft 202 to rotate, which in turn drives the worm gear 204 to rotate the worm wheel 205, thereby driving the valve stem 3 and the butterfly valve core 4 to rotate inside the detachable assembled valve body 1, thus realizing the opening and closing operation of the butterfly valve.

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, in some practical applications, the surface of the butterfly valve core 4 has an arc-shaped streamlined structure, and the surface of the butterfly valve core 4 is smooth.

[0028] More specifically, the surface of its butterfly valve core 4 has an arc-shaped streamlined structure, which reduces the resistance of the fluid in the detachable assembly valve body 1 when it flows.

[0029] In some practical applications, the end face of the corrosion-resistant sealing strip 6 is arc-shaped. When the butterfly valve core 4 is closed, the corrosion-resistant sealing strip 6 fits tightly with the arc-shaped streamlined part of the butterfly valve core 4.

[0030] More specifically, the corrosion-resistant sealing strip 6 comes into contact with the surface of the butterfly valve core 4, and at this time, a bidirectional seal is formed to tightly seal the detachable assembled valve body 1 and the corrosion-resistant sealing strip 6.

[0031] The end of the sloping step 11 is provided with an elastic component 5, and the elastic component 5 is connected to a corrosion-resistant sealing strip 6; such as Figure 4 and Figure 5 As shown, specifically, the elastic component 5 includes a limiting frame 501 fixedly installed on the end face of the sloping step 11, and a rigid arc strip 503 is movably inserted into the limiting frame 501. Several sets of springs 502 are fixedly connected between the end face of the sloping step 11 and the rigid arc strip 503, and a corrosion-resistant sealing strip 6 is fixedly installed on the end face of the rigid arc strip 503.

[0032] More specifically, the spring 502 provides elastic force to the corrosion-resistant sealing strip 6, ensuring that when the corrosion-resistant sealing strip 6 is in close contact with the butterfly valve core 4, the corrosion-resistant sealing strip 6 seals the butterfly valve core 4 and the detachable assembled valve body 1, maintaining good sealing performance even under long-term use and high-pressure conditions.

[0033] When the butterfly valve core 4 is closed, the surface of its corrosion-resistant sealing strip 6 comes into contact with the surface of the butterfly valve core 4, at which point the elastic component 5 is compressed. More specifically, the elastic component 5 ensures that the corrosion-resistant sealing strip 6 and the butterfly valve core 4 maintain a tight contact at all times, effectively preventing leakage and improving sealing performance even when high-pressure fluid passes through.

[0034] In summary: The drive assembly 2 drives the valve stem 3 to rotate the butterfly valve core 4 inside the detachable assembled valve body 1, thereby controlling the opening and closing of the butterfly valve. The end of the sloped step 11 is provided with an elastic assembly 5, and a corrosion-resistant sealing strip 6 is elastically connected through the elastic assembly 5. When the butterfly valve is closed, the corrosion-resistant sealing strip 6 is in close contact with the surface of the butterfly valve core 4, compressing the elastic assembly 5, so that the corrosion-resistant sealing strip 6 forms a seal between the butterfly valve core 4 and the detachable assembled valve body 1 to prevent fluid leakage.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve of low resistance and high sealing property, characterized by, The valve body includes a detachable assembly valve body (1), the inner wall of which is provided with a sloping step (11). A valve stem (3) is rotatably inserted into the detachable assembly valve body (1), and a butterfly valve core (4) is fixedly sleeved on the surface of the valve stem (3). A drive assembly (2) is provided at the top of the detachable assembly valve body (1) so as to drive the valve stem (3) to drive the butterfly valve core (4) to rotate inside the detachable assembly valve body (1) to control its opening and closing. An elastic assembly (5) is provided at the end of the sloping step (11), and a corrosion-resistant sealing strip (6) is connected to the elastic assembly (5).

2. The low resistance high sealing butterfly valve according to claim 1, wherein, When the butterfly valve core (4) is closed, the surface of its corrosion-resistant sealing strip (6) comes into contact with the surface of the butterfly valve core (4), and at this time the elastic component (5) is in a compressed state.

3. The low resistance high sealing butterfly valve according to claim 1, wherein, The drive assembly (2) includes a housing (201) fixedly installed on the top surface of the detachable assembled valve body (1). A rotating shaft (202) is rotatably inserted into the two side walls of the housing (201), and a handwheel knob (203) is fixedly installed at the end of the rotating shaft (202). A worm gear (204) is fixedly sleeved on the surface of the handwheel knob (203). The valve stem (3) and the detachable assembled valve body (1) are rotatably inserted into the housing (201), and a worm wheel (205) is fixedly sleeved on the surface of the valve stem (3). The worm wheel (205) meshes with the worm gear (204).

4. The low resistance high sealing butterfly valve according to claim 2, wherein, The surface of the butterfly valve core (4) has an arc-shaped streamlined structure and a smooth surface.

5. A butterfly valve with low resistance and high sealing performance according to claim 2, characterized in that, The elastic component (5) includes a limiting frame (501) fixedly installed on the end face of the slope step (11), and a rigid arc strip (503) is movably inserted into the limiting frame (501). Several sets of springs (502) are fixedly connected between the end face of the slope step (11) and the rigid arc strip (503), and a corrosion-resistant sealing strip (6) is fixedly installed on the end face of the rigid arc strip (503).

6. The low resistance high sealing butterfly valve according to claim 4, wherein, The end face of the corrosion-resistant sealing strip (6) is arc-shaped. When the butterfly valve core (4) is closed, the corrosion-resistant sealing strip (6) is tightly fitted with the arc-shaped streamlined part of the butterfly valve core (4).

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