Butterfly valve capable of preventing deviation of sealing rubber ring

Abstract

The utility model discloses a butterfly valve capable of preventing a sealing rubber ring from shifting, which relates to the technical field of butterfly valves and comprises a valve body, a valve plate is mounted in the valve body, a valve shaft extending to the position above the valve body is arranged in the valve plate, and a sealing ring component is assembled at the contact position of the inner wall of the valve body and the valve plate. The sealing ring assembly comprises a first sealing ring arranged in the valve body in a sleeved mode, a second sealing ring is arranged at the position, located on the valve body, of one side of the end of the first sealing ring, and multiple sets of notches are formed in the ends, close to each other, of the first sealing ring and the second sealing ring in a staggered mode. According to the butterfly valve, the restraining strip and the positioning groove in the sealing ring assembly are matched with each other, the grasping force between the sealing ring assembly and the valve body is large, dislocation caused by rotation of the valve plate is avoided, the sealing performance of the butterfly valve is better, meanwhile, the first sealing ring and the second sealing ring are arranged so that the sealing rings can be installed in the valve body more conveniently, and the sealing effect is better. And in addition, subsequent replacement of the aged sealing ring is facilitated, and convenience is provided for subsequent workers.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve capable of preventing a sealing rubber ring from deflecting. Background Art

[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 features a disc-shaped closing element (disc or disc) that rotates around the valve shaft to open and close. The valve can be used to control the flow of various fluids, including air, water, steam, various corrosive media, slurries, oils, liquid metals, and radioactive media. It primarily serves as a shutoff and throttling mechanism in pipelines.

[0003] The valve opening and closing member is a disc-shaped butterfly disc that rotates around its own axis within the valve body to achieve the purpose of opening, closing, or regulating. A sealing rubber ring is required during the installation of a butterfly valve. As the valve disc moves, it drives the sealing ring to rotate with it. This can cause the sealing ring to shift and slide under the influence of the disc's torque. This can significantly reduce the sealing performance in the later stages and cause great inconvenience to the user. Therefore, a butterfly valve that prevents the sealing rubber ring from shifting is proposed. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide a butterfly valve that prevents the sealing rubber ring from deflecting, so as to solve the technical problems raised in the above background.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a butterfly valve for preventing the deviation of a sealing rubber ring, comprising a valve body, a valve plate installed in the valve body, a valve shaft extending to the upper part of the valve body provided in the valve plate, and a sealing ring assembly assembled at the contact position between the inner wall of the valve body and the valve plate;

[0006] The sealing ring assembly includes a first sealing ring mounted in the valve body, a second sealing ring is provided on one side of the end of the first sealing ring located on the valve body, multiple groups of notches are staggeredly provided at the ends of the first sealing ring and the second sealing ring close to each other, extension strips are provided at the contact positions of the first sealing ring and the second sealing ring with the notches, and multiple groups of constraint strips are fixed to the curved outer walls of the first sealing ring and the second sealing ring.

[0007] As an optimal technical solution for a butterfly valve that prevents the sealing rubber ring from shifting according to the present invention, annular grooves are provided at the front and rear ends of the valve body and close to the inner wall. The inner wall of the annular groove is provided with multiple groups of positioning grooves that are connected to the inner wall of the valve body. The sizes and positions of the multiple groups of positioning grooves correspond one to one with the constraint strips.

[0008] As a preferred technical solution for a butterfly valve that prevents the sealing rubber ring from shifting in the present invention, anti-slip grooves are provided on the curved inner wall of the valve body and the curved outer walls of the first sealing ring and the second sealing ring.

[0009] As an optimal technical solution for a butterfly valve to prevent the sealing rubber ring from deflecting in the present invention, a metal ring is sleeved in the annular groove and fits with the end faces of the first sealing ring and the second sealing ring.

[0010] As an optimal technical solution for a butterfly valve that prevents the sealing rubber ring from deflecting in the present invention, flanges are welded to the front and rear ends of the valve body.

[0011] As a preferred technical solution for a butterfly valve to prevent the sealing rubber ring from deflecting according to the present invention, arc openings are reserved at the contact positions between the first sealing ring and the second sealing ring and the valve shaft.

[0012] As a preferred technical solution for a butterfly valve that prevents the sealing rubber ring from deflecting in the present invention, a rubber ring is adhered to the end surface of the metal ring away from the valve body.

[0013] In summary, the present invention has the following beneficial effects:

[0014] The utility model cooperates with the restraining strip and the positioning groove in the sealing ring assembly to ensure that the grip between the sealing ring and the valve body is greater, and there will be no misalignment due to the rotation of the valve plate, so that the sealing performance of the butterfly valve is better. The first sealing ring and the second sealing ring provided at the same time make it more convenient to install the sealing ring in the valve body and facilitate the subsequent replacement of the aged sealing ring, providing convenience for subsequent manual work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 This is a structural diagram of the valve body and sealing ring assembly of the utility model;

[0017] Figure 3 This is an expanded view of the sealing ring assembly of the present utility model;

[0018] Figure 4 This is an expanded view of the valve body and metal ring of the utility model.

[0019] In the figure: 100, valve body;

[0020] 110. Valve plate; 120. Valve shaft; 130. Sealing ring assembly; 131. First sealing ring; 132. Second sealing ring; 133. Arc opening; 134. Notch; 135. Extension strip; 136. Constraint strip; 140. Metal ring; 150. Ring groove; 160. Positioning groove; 170. Anti-slip groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] The following describes an embodiment of the present invention based on its overall structure.

[0023] A butterfly valve that prevents the sealing rubber ring from deflecting, as shown in Figure 1 to Figure 4 , comprising a valve body 100, a valve plate 110 is installed in the valve body 100, a valve shaft 120 is provided in the valve plate 110 and extends to the top of the valve body 100, and a sealing ring assembly 130 is assembled at the contact position between the inner wall of the valve body 100 and the valve plate 110;

[0024] The sealing ring assembly 130 includes a first sealing ring 131 sleeved within the valve body 100. A second sealing ring 132 is provided at one end of the first sealing ring 131, located on the valve body 100. Multiple sets of notches 134 are alternately formed at the ends of the first and second sealing rings 131, 132 that are adjacent to each other. Extension strips 135 are provided at the contact points between the first and second sealing rings 131, 132 and the notches 134. Multiple sets of restraint strips 136 are fixed to the curved outer walls of each of the first and second sealing rings 131, 132.

[0025] Annular grooves 150 are provided at the front and rear ends of the valve body 100 near the inner wall. The inner wall of the annular groove 150 is provided with multiple groups of positioning grooves 160 connected to the inner wall of the valve body 100. The sizes and positions of the multiple groups of positioning grooves 160 correspond one-to-one to the restraint strips 136.

[0026] When assembling the butterfly valve, the first sealing ring 131 and the second sealing ring 132 can be placed on the front and rear end surfaces of the valve body 100 respectively, and an external force is applied to the side close to the valve body 100, so that the first sealing ring 131 and the second sealing ring 132 are respectively inserted into the valve body 100, and the constraint strip 136 on the outer wall thereof will enter the positioning groove 160, and the outer walls of the first sealing ring 131 and the second sealing ring 132 will respectively contact the anti-slip groove 170 opened in the valve body 100. At this time, the extension strip 135 is respectively entered into the notch 134. At this time, the two sets of metal rings 140 are sequentially placed in the ring groove 150, and will squeeze The first sealing ring 131 and the second sealing ring 132 are pressed completely into the valve body 100, and the metal ring 140 is also completely entered into the positioning groove 160 at this time. Under the action of, the gripping force between the first sealing ring 131 and the second sealing ring 132 and the inner wall of the valve body 100 will be greater, and the extension strip 135 increases the connection force between the two, so that they will not be offset or misaligned with the rotation of the valve plate 110, thereby ensuring better sealing of the valve body 100. At the same time, the first sealing ring 131 and the second sealing ring 132 can be pulled in two directions at a later time to complete the disassembly, making the later manual replacement more convenient.

[0027] Please refer to Figure 2 The curved inner wall of the valve body 100 and the curved outer walls of the first sealing ring 131 and the second sealing ring 132 are provided with anti-slip grooves 170 .

[0028] The anti-slip grooves 170 are used to increase the magic grass coefficient between the outer walls of the first sealing ring 131 and the second sealing ring 132, so that the first sealing ring 131 and the second sealing ring 132 are installed in the valve body 100 more stably.

[0029] Please refer to Figure 1 A metal ring 140 is sleeved in the annular groove 150 and is in contact with the end faces of the first sealing ring 131 and the second sealing ring 132 .

[0030] The metal ring 140 blocks the end surfaces of the first sealing ring 131 and the second sealing ring 132 to ensure that the valve plate 110 does not move or become misaligned when the valve plate 110 rotates.

[0031] Please refer to Figure 1 The front and rear ends of the valve body 100 are both welded with flanges.

[0032] Bolts are used to penetrate the threaded holes reserved on the flange, making the connection of the butterfly valve convenient and efficient.

[0033] Please refer to Figure 2 An arc opening 133 is reserved at the contact position between the first sealing ring 131 and the second sealing ring 132 and the valve shaft 120 .

[0034] Ensure that the installation and rotation of the valve shaft 120 are not restricted, so that the valve plate 110 can be opened or closed normally.

[0035] Please refer to Figure 1 and Figure 2 A rubber ring is attached to the end surface of the metal ring 140 away from the valve body 100 .

[0036] The joint between the valve body 100 and the external pipeline is in a sealed state, which can better avoid leakage.

[0037] When in use, when assembling the butterfly valve, the first sealing ring 131 and the second sealing ring 132 can be placed on the front and rear end surfaces of the valve body 100 respectively, and an external force is applied to the side close to the valve body 100, so that the first sealing ring 131 and the second sealing ring 132 are respectively entered into the valve body 100, and the constraint strip 136 of the outer wall thereof will enter into the positioning groove 160, and the outer walls of the first sealing ring 131 and the second sealing ring 132 will respectively contact the anti-slip groove 170 opened in the valve body 100, at this time, the extension strip 135 will respectively enter into the notch 134, and at this time, the two sets of metal rings 140 will be placed in the ring groove 150 in turn, and the first sealing ring 131 and the second sealing ring will be squeezed. The sealing ring 132 is completely inserted into the valve body 100, and the metal ring 140 is also completely inserted into the positioning groove 160 at this time. Under the action of the first sealing ring 131 and the second sealing ring 132, the gripping force between the inner wall of the valve body 100 is greater, and the extension strip 135 increases the connection force between the two, so that they will not be offset or misaligned with the rotation of the valve plate 110, thereby ensuring better sealing of the valve body 100. At the same time, the first sealing ring 131 and the second sealing ring 132 can be pulled in two directions at a later time to complete the disassembly, making the later manual replacement more convenient. The parts not involved in this device are the same as the existing technology or can be implemented using the existing technology.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A butterfly valve for preventing a sealing rubber ring from deflecting, comprising a valve body (100), characterized in that: A valve plate (110) is installed inside the valve body (100), a valve shaft (120) is provided inside the valve plate (110) and extends above the valve body (100), and a sealing ring assembly (130) is assembled at the contact position between the inner wall of the valve body (100) and the valve plate (110); The sealing ring assembly (130) includes a first sealing ring (131) sleeved in the valve body (100), a second sealing ring (132) is provided on one side of the end of the first sealing ring (131) located on the valve body (100), a plurality of groups of notches (134) are staggeredly provided at the ends of the first sealing ring (131) and the second sealing ring (132) close to each other, an extension strip (135) is provided at the contact position between the first sealing ring (131) and the second sealing ring (132) and the notch (134), and a plurality of groups of constraint strips (136) are fixed to the curved outer walls of the first sealing ring (131) and the second sealing ring (132).

2. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: An annular groove (150) is provided at the front and rear ends of the valve body (100) and near the inner wall. The inner wall of the annular groove (150) is provided with multiple groups of positioning grooves (160) connected to the inner wall of the valve body (100). The sizes and positions of the multiple groups of positioning grooves (160) correspond one-to-one to the constraint strips (136).

3. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: The curved inner wall of the valve body (100) and the curved outer walls of the first sealing ring (131) and the second sealing ring (132) are provided with anti-slip grooves (170).

4. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 2, characterized in that: A metal ring (140) is sleeved in the annular groove (150) and is in contact with the end faces of the first sealing ring (131) and the second sealing ring (132).

5. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: Flanges are welded to the front and rear ends of the valve body (100).

6. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: An arc opening (133) is reserved at the contact positions between the first sealing ring (131) and the second sealing ring (132) and the valve shaft (120).

7. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 4, characterized in that: A rubber ring is adhered to the end surface of the metal ring (140) away from the valve body (100).

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