A strong sealing corrosion-resistant butterfly valve

Abstract

The utility model relates to valve technical field, concretely relates to a strong sealing corrosion -resistant butterfly valve, including butterfly valve main part, the inner chamber of butterfly valve main part is sealedly connected with sealing cylinder, the top of butterfly valve main part is rotatably connected with adjusting mechanism, the adjusting mechanism includes spanner, the inner chamber of sealing cylinder is sealedly connected with butterfly plate, the bottom of adjusting mechanism is slidably connected with sealing mechanism, and it is through to the inside of adjusting mechanism, the outer wall of butterfly plate is slidably connected with a plurality of sealing gaskets, and is located between butterfly plate outer wall and sealing cylinder inner wall. The utility model discloses through the mutual cooperation between adjusting mechanism inside parts, can drive connecting axle rotation through spanner to open the rotation of butterfly plate, through the mutual cooperation between sealing mechanism inside parts, can improve the connection sealing property between butterfly plate outer wall and sealing cylinder, makes butterfly valve main part still has very high sealing property after long -term use.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a strong-sealing, corrosion-resistant butterfly valve. 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 defined as a valve whose closing element is a disc that rotates around a valve shaft to achieve opening and closing. Butterfly 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.

[0003] A search revealed a utility model patent with publication number CN219388638U, which discloses a butterfly valve with strong sealing performance. The valve includes a valve body, a valve stem with a handle, an inner lining ring with a through hole matching the valve stem, and a butterfly valve plate with a shaft hole matching the valve stem. Several sealing grooves are symmetrically formed on both sides of the butterfly valve plate around the valve stem axis. Several sealing protrusions matching the sealing grooves are located on the inner circumference of the inner lining ring at positions corresponding to the sealing grooves. A reinforced sealing mechanism is also provided at both ends of the butterfly valve plate connected to the valve stem.

[0004] Although the aforementioned patent improves the sealing performance of the butterfly valve plate and the sealing groove by providing several sealing protrusions that match the sealing groove at the corresponding positions on the inner circumferential surface of the inner lining rubber ring, the butterfly valve plate will be opened and closed during long-term use. This will cause the sealing ring to be severely worn, resulting in gaps after the butterfly valve is closed, and thus poor sealing performance of the butterfly valve.

[0005] Therefore, it is necessary to propose a strong-sealing, corrosion-resistant butterfly valve to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a highly sealed and corrosion-resistant butterfly valve. By adjusting the interoperability of the internal parts of the mechanism, a wrench can be used to rotate the connecting shaft, thereby causing the butterfly plate to rotate and open. Through the interoperability of the internal parts of the sealing mechanism, the connection and sealing performance between the outer wall of the butterfly plate and the sealing cylinder can be improved, so that the butterfly valve body still has extremely high sealing performance after long-term use. This solves the problem in the prior art that during long-term use of butterfly valves, the butterfly plate of the butterfly valve is opened and closed, which leads to severe wear of the sealing ring, resulting in gaps after the butterfly valve is closed and causing poor sealing performance.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a strong sealing corrosion-resistant butterfly valve, comprising a butterfly valve body, a sealing cylinder being sealed to the inner cavity of the butterfly valve body, an adjusting mechanism being rotatably connected to the top of the butterfly valve body and penetrating through the butterfly valve body to the inner cavity of the sealing cylinder, and a sealing mechanism being slidably connected to the bottom of the adjusting mechanism and penetrating into the interior of the adjusting mechanism.

[0008] The adjusting mechanism includes a wrench, which is rotatably connected to the top of the butterfly valve body via a bearing. The inner cavity of the sealing cylinder is sealed with a butterfly plate. The top of the butterfly plate is mechanically fixed with a connecting shaft and rotatably connected to the inside of the butterfly valve body. The bottom of the wrench is mechanically connected with a support plate and slidably connected to the inside of the butterfly valve body.

[0009] The sealing mechanism includes a piston rod, which is mechanically fixed to the bottom end of the butterfly plate and slidably connected to the inside of the connecting shaft. Slider blocks are mechanically fixed to both sides of the outer wall of the butterfly plate and slidably connected to the inside of the butterfly valve body. Multiple sealing gaskets are slidably connected to the outer wall of the butterfly plate and located between the outer wall of the butterfly plate and the inner wall of the sealing cylinder. A connecting rod is slidably connected between the sealing gaskets and the butterfly plate. A piston plate is mechanically connected to the side of the connecting rod away from the sealing gaskets. A return spring is mechanically connected between the piston plate and the inner wall of the butterfly plate and is sleeved on the outer wall of the connecting rod.

[0010] Preferably, the adjusting mechanism further includes a support spring, which is mechanically fixed between the bottom end of the support plate and the inside of the butterfly valve body, and sleeved with the outer wall of the piston rod. The bottom end of the support plate is mechanically fixed with multiple docking posts that extend into the interior of the connecting shaft.

[0011] Preferably, the outer wall of the sealing cylinder is machined with multiple raised lines and is sealed to the inner wall of the butterfly valve body. There is a small gap between the inner wall of the sealing cylinder and the outer wall of the butterfly plate. The thickness of the sealing gasket is 2mm, and tapered elastic teeth are provided at the joint between the sealing gaskets.

[0012] Preferably, the butterfly valve body has a sliding groove inside that matches the slider, and the top of the connecting shaft has a docking hole that matches the docking post. The butterfly valve body also has a support groove inside that matches the support spring.

[0013] Preferably, the inner wall of the butterfly valve body is provided with a sliding groove that matches the slider, and the bottom end of the sliding groove is provided with an arc-shaped groove that rotates 90 degrees. The inside of the connecting shaft is provided with a piston hole that matches the piston rod.

[0014] Preferably, the interior of the butterfly plate and the interior of the connecting shaft are filled with hydraulic oil, and the inner wall of the butterfly plate and the interior of the connecting shaft are both opened and closed with piston grooves that match the piston rod and piston plate, and the outer wall of the butterfly plate is provided with a sealing groove that matches the sealing gasket.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. By pressing the wrench, the support plate is pushed to compress the support spring and move downwards. The movement of the support plate causes the docking post to slide, and the docking post slides into the connecting shaft, completing the connection and fixation between the wrench and the connecting shaft. Rotating the wrench causes the connecting shaft to rotate, and the rotating connecting shaft causes the butterfly plate to rotate, allowing the butterfly plate to rotate and open and close inside the sealing cylinder. The outer wall of the sealing cylinder has multiple raised textures machined and is sealed to the inner wall of the butterfly valve body. This facilitates the separation of the outer wall of the butterfly valve body from the sealing cylinder, preventing corrosion and erosion of the outer wall of the butterfly valve body from affecting the sealing performance of the sealing cylinder, thereby improving the sealing performance of the butterfly valve body.

[0017] 2. By sliding the wrench downwards, the support plate drives the piston rod at the bottom to slide inside the connecting shaft. Simultaneously, a sliding groove matching the slider is formed on the inner wall of the butterfly valve body, and an arc-shaped groove with a rotational radius is formed at the bottom of the sliding groove. This facilitates the support plate driving the slider to slide inside the butterfly valve body and into the arc-shaped groove, thus limiting the position of the support plate. Hydraulic oil is filled inside the butterfly plate and the connecting shaft, and piston grooves matching the piston rod and piston plate are formed on the inner walls of both the butterfly plate and the connecting shaft. This facilitates the movement of the piston rod inside the connecting shaft. Pushing the hydraulic oil moves the piston plate, causing it to be compressed and the return spring to contract. This movement of the piston plate pushes the connecting rod, causing the sealing gasket to extend from the outer wall of the butterfly plate. This allows the butterfly plate to rotate and the inner wall of the sealing cylinder to fit together. The sealing gasket fills the gap between the sealing cylinder and the butterfly plate. Multiple sealing gaskets interlock through elastic teeth, improving the sealing performance between them. Therefore, even after long-term use, the butterfly valve body maintains a very high level of sealing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a front view cross-sectional diagram of the butterfly valve body of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the top of the butterfly valve body of this utility model.

[0022] Figure 4 This is a cross-sectional structural diagram of the butterfly plate of this utility model;

[0023] Figure 5 This is a schematic diagram of the connection structure of the sealing gasket of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Butterfly valve body; 101. Sealing cylinder; 2. Adjusting mechanism; 201. Wrench; 202. Connecting shaft; 203. Butterfly plate; 204. Support plate; 205. Support spring; 206. Connecting column; 3. Sealing mechanism; 301. Piston rod; 302. Slider; 303. Sealing gasket; 304. Connecting rod; 305. Piston plate; 306. Return spring. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figures 1-5 The above describes a strong sealing corrosion-resistant butterfly valve, which includes a butterfly valve body 1, a sealing cylinder 101 sealed to the inner cavity of the butterfly valve body 1, an adjusting mechanism 2 rotatably connected to the top of the butterfly valve body 1 and penetrating the butterfly valve body 1 to the inner cavity of the sealing cylinder 101, and a sealing mechanism 3 slidably connected to the bottom of the adjusting mechanism 2 and penetrating into the interior of the adjusting mechanism 2.

[0028] The adjusting mechanism 2 includes a wrench 201, which is rotatably connected to the top of the butterfly valve body 1 via a bearing. The inner cavity of the sealing cylinder 101 is sealed with a butterfly plate 203. The top of the butterfly plate 203 is mechanically fixed with a connecting shaft 202 and rotatably connected to the inside of the butterfly valve body 1. The bottom end of the wrench 201 is mechanically connected with a support plate 204 and slidably connected to the inside of the butterfly valve body 1.

[0029] The sealing mechanism 3 includes a piston rod 301, which is mechanically fixed to the bottom end of the butterfly plate 203 and slidably connected to the inside of the connecting shaft 202. Slider blocks 302 are mechanically fixed to both sides of the outer wall of the butterfly plate 203 and slidably connected to the inside of the butterfly valve body 1. Multiple sealing gaskets 303 are slidably connected to the outer wall of the butterfly plate 203 and located between the outer wall of the butterfly plate 203 and the inner wall of the sealing cylinder 101. A connecting rod 304 is slidably connected between the sealing gaskets 303 and the butterfly plate 203. A piston plate 305 is mechanically connected to the side of the connecting rod 304 away from the sealing gaskets 303. A return spring 306 is mechanically connected between the piston plate 305 and the inner wall of the butterfly plate 203 and is sleeved with the outer wall of the connecting rod 304.

[0030] By adjusting the cooperation between the internal parts of the mechanism 2, the connecting shaft 202 can be rotated by the wrench 201, thereby causing the butterfly plate 203 to rotate and open. By cooperating between the internal parts of the sealing mechanism 3, the connection sealing between the outer wall of the butterfly plate 203 and the sealing cylinder 101 can be improved, so that the butterfly valve body 1 still has extremely high sealing performance after long-term use.

[0031] Refer to the instruction manual appendix Figures 1-5 The adjusting mechanism 2 also includes a support spring 205, which is mechanically fixed between the bottom end of the support plate 204 and the inside of the butterfly valve body 1, and sleeved with the outer wall of the piston rod 301. The bottom end of the support plate 204 is mechanically fixed with multiple docking posts 206, which penetrate into the inside of the connecting shaft 202. Through the mutual cooperation between the internal parts of the adjusting mechanism 2, the mutual connection between the wrench 201 and the connecting shaft 202 can be completed.

[0032] Refer to the instruction manual appendix Figures 1-5 The outer wall of the sealing cylinder 101 has multiple raised textures machined and is sealed to the inner wall of the butterfly valve body 1. There is a small gap between the inner wall of the sealing cylinder 101 and the outer wall of the butterfly plate 203. The thickness of the sealing gasket 303 is 2mm, and the sealing gaskets 303 are provided with conical elastic teeth at the joint. The small gap between the inner wall of the sealing cylinder 101 and the outer wall of the butterfly plate 203, the thickness of the sealing gasket 303 is 2mm, and the sealing gaskets 303 are provided with conical elastic teeth at the joint, facilitates the rotation of the butterfly plate 203 and the mutual contact between the inner wall of the sealing cylinder 101. After the sealing cylinder 101 and the inner wall of the sealing cylinder 101 are in contact with each other, the sealing gaskets 303 fill the gap between the sealing cylinder 101 and the butterfly plate 203. The multiple sealing gaskets 303 are interlocked by the elastic teeth, which improves the sealing performance between the multiple sealing gaskets 303.

[0033] Refer to the instruction manual appendix Figures 1-5The butterfly valve body 1 has a sliding groove inside that matches the slider 302, and the top of the connecting shaft 202 has a docking hole that matches the docking post 206. The butterfly valve body 1 also has a support groove inside that matches the support spring 205. The sliding groove inside the butterfly valve body 1 that matches the slider 302 and the docking hole at the top of the connecting shaft 202 that matches the docking post 206 facilitate the docking post 206 to slide into the connecting shaft 202, thus completing the connection between the wrench 201 and the connecting shaft 202.

[0034] Refer to the instruction manual appendix Figures 1-5 The inner wall of the butterfly valve body 1 is provided with a sliding groove that matches the slider 302, and the bottom end of the sliding groove is provided with an arc groove that rotates 90 degrees. The inside of the connecting shaft 202 is provided with a piston hole that matches the piston rod 301. The sliding groove that matches the slider 302 is provided on the inner wall of the butterfly valve body 1, and the bottom end of the sliding groove is provided with an arc groove that rotates 90 degrees, so that the slider 302 can slide inside the butterfly valve body 1 and slide into the arc groove to complete the position limit of the support plate 204.

[0035] Refer to the instruction manual appendix Figures 1-5 The interior of the butterfly plate 203 and the interior of the connecting shaft 202 are filled with hydraulic oil. The inner wall of the butterfly plate 203 and the interior of the connecting shaft 202 are both opened and closed with piston grooves that match the piston rod 301 and the piston plate 305. The outer wall of the butterfly plate 203 is provided with a sealing groove that matches the sealing gasket 303. The fact that the interior of the butterfly plate 203 and the interior of the connecting shaft 202 are filled with hydraulic oil, and that the inner wall of the butterfly plate 203 and the interior of the connecting shaft 202 are both opened and closed with piston grooves that match the piston rod 301 and the piston plate 305, facilitates the movement of the piston rod 301 inside the connecting shaft 202, and drives the piston plate 305 to move by pushing the hydraulic oil.

[0036] The working principle of this practical application is as follows:

[0037] Refer to the instruction manual appendix Figures 1-5 By pressing the wrench 201, the wrench 201 is forced to push the support plate 204 to compress the support spring 205 and move downward, causing the support plate 204 to move downward. The movement of the support plate 204 causes the docking post 206 to slide, so that the docking post 206 slides into the connecting shaft 202, completing the connection and fixation between the wrench 201 and the connecting shaft 202. Rotating the wrench 201 causes the connecting shaft 202 to rotate, which in turn causes the butterfly plate 203 to rotate, allowing the butterfly plate 203 to rotate and open and close inside the sealing cylinder 101. The outer wall of the sealing cylinder 101 has multiple raised textures machined and is sealed to the inner wall of the butterfly valve body 1, which facilitates the separation of the outer wall of the butterfly valve body 1 from the sealing cylinder 101, preventing corrosion and erosion of the outer wall of the butterfly valve body 1 from affecting the sealing performance of the sealing cylinder 101, thereby improving the sealing performance of the butterfly valve body 1.

[0038] Refer to the instruction manual appendix Figures 1-5 By sliding the wrench 201 downwards, the wrench 201 drives the piston rod 301 at its bottom end to slide inside the connecting shaft 202 via the support plate 204. Simultaneously, a sliding groove matching the slider 302 is provided on the inner wall of the butterfly valve body 1, and the bottom end of the sliding groove has a 90-degree rotating arc groove, facilitating the support plate 204 to drive the slider 302 to slide inside the butterfly valve body 1 and into the arc groove, thus limiting the position of the support plate 204. Hydraulic oil is filled inside the butterfly plate 203 and the connecting shaft 202, and piston grooves matching the piston rod 301 and piston plate 305 are opened and closed on the inner walls of both the butterfly plate 203 and the connecting shaft 202. To facilitate the movement of the piston rod 301 within the connecting shaft 202, the piston plate 305 is moved by pushing hydraulic oil, causing the piston plate 305 to be compressed and the return spring 306 to contract and move. This movement of the piston plate 305 pushes the connecting rod 304, causing the sealing gasket 303 to extend from the outer wall of the butterfly plate 203. This facilitates the rotation of the butterfly plate 203 and its contact with the inner wall of the sealing cylinder 101. The sealing gasket 303 fills the gap between the sealing cylinder 101 and the butterfly plate 203. Furthermore, the multiple sealing gaskets 303 interlock through elastic teeth, which improves the sealing performance between the multiple sealing gaskets 303. As a result, the butterfly valve body 1 retains extremely high sealing performance even after long-term use.

[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A strong sealing corrosion resistant butterfly valve characterized in that: Includes a butterfly valve body (1), the inner cavity of the butterfly valve body (1) is sealed with a sealing cylinder (101), the top end of the butterfly valve body (1) is rotatably connected with an adjustment mechanism (2), which penetrates the butterfly valve body (1) to the inner cavity of the sealing cylinder (101), and the bottom end of the adjustment mechanism (2) is slidably connected with a sealing mechanism (3), which penetrates into the interior of the adjustment mechanism (2). The adjusting mechanism (2) includes a wrench (201), which is rotatably connected to the top of the butterfly valve body (1) via a bearing. The inner cavity of the sealing cylinder (101) is sealed with a butterfly plate (203). The top of the butterfly plate (203) is mechanically fixed with a connecting shaft (202) and rotatably connected to the inside of the butterfly valve body (1). The bottom end of the wrench (201) is mechanically connected with a support plate (204) and slidably connected to the inside of the butterfly valve body (1). The sealing mechanism (3) includes a piston rod (301), which is mechanically fixed to the bottom end of the butterfly plate (203) and slidably connected to the inside of the connecting shaft (202). Slider blocks (302) are mechanically fixed on both sides of the outer wall of the butterfly plate (203) and slidably connected to the inside of the butterfly valve body (1). Multiple sealing gaskets (303) are slidably connected to the outer wall of the butterfly plate (203) and located between the outer wall of the butterfly plate (203) and the inner wall of the sealing cylinder (101). A connecting rod (304) is slidably connected between the sealing gasket (303) and the butterfly plate (203). A piston plate (305) is mechanically connected to the side of the connecting rod (304) away from the sealing gasket (303). A return spring (306) is mechanically connected between the piston plate (305) and the inner wall of the butterfly plate (203) and is sleeved with the outer wall of the connecting rod (304).

2. The strong sealing corrosion resistant butterfly valve according to claim 1, characterized in that: The adjustment mechanism (2) also includes a support spring (205), which is mechanically fixed between the bottom end of the support plate (204) and the inside of the butterfly valve body (1), and is sleeved with the outer wall of the piston rod (301). The bottom end of the support plate (204) is mechanically fixed with a plurality of docking posts (206), which penetrate into the inside of the connecting shaft (202).

3. The strong sealing corrosion resistant butterfly valve according to claim 1, characterized in that: The outer wall of the sealing cylinder (101) is machined with multiple raised textures and is sealed to the inner wall of the butterfly valve body (1). There is a small gap between the inner wall of the sealing cylinder (101) and the outer wall of the butterfly plate (203). The thickness of the sealing gasket (303) is 2mm, and the sealing gasket (303) is provided with conical elastic teeth at the joint.

4. The strong sealing corrosion resistant butterfly valve according to claim 2, characterized in that: The butterfly valve body (1) has a sliding groove inside that matches the slider (302), and the top of the connecting shaft (202) has a docking hole that matches the docking post (206). The butterfly valve body (1) also has a support groove inside that matches the support spring (205).

5. The strong sealing corrosion resistant butterfly valve according to claim 1, characterized in that: The inner wall of the butterfly valve body (1) is provided with a sliding groove that matches the slider (302), and the bottom end of the sliding groove is provided with an arc groove that rotates 90 degrees. The inside of the connecting shaft (202) is provided with a piston hole that matches the piston rod (301).

6. The strong sealing corrosion resistant butterfly valve according to claim 1, characterized in that: The inside of the butterfly plate (203) and the inside of the connecting shaft (202) are filled with hydraulic oil, and the inner wall of the butterfly plate (203) and the inside of the connecting shaft (202) are both provided with a piston sliding groove matched with the piston rod (301) and the piston sheet (305), and the outer wall of the butterfly plate (203) is provided with a sealing groove matched with the sealing gasket (303).

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