Butterfly valve casting with multidirectional sealing groove structure

Abstract

The utility model discloses a butterfly valve casting with a multidirectional sealing groove structure, and relates to the technical field of butterfly valve castings. The butterfly valve casting with the multidirectional sealing groove structure comprises a butterfly valve shell, the butterfly valve sealing assembly comprises a valve rod, the valve rod is rotationally connected into a butterfly valve shell, a valve clack is arranged in the butterfly valve shell, two valve clack connecting plates are fixedly connected to the surface of the butterfly valve shell, and the two valve clack connecting plates are both fixedly connected with the valve clack. Two sealing sleeves are connected to the surface of the valve clack in a sleeving mode, two first sealing gaskets used for sealing the valve clack and the sealing sleeves are arranged between the two sealing sleeves, the two sealing sleeves are fixed through two bolts, and opening and closing of the valve are achieved by rotating around the axis of the valve rod through arrangement of the valve clack, the sealing sleeves and a valve clack guide groove. And the sealing sleeve is fixed through bolts, so that when the sealing sleeve is abraded, the sealing sleeve, the second sealing gasket and the third sealing gasket can be replaced in time, and the sealing performance is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve casting technology, and in particular to butterfly valve castings with multi-directional sealing groove structure. Background Technology

[0002] A butterfly valve is a type of regulating valve used for on / off control of low-pressure pipeline media. The opening and closing element of a butterfly valve is a disc-shaped butterfly plate that rotates around its own axis within the valve body to achieve opening, closing, or regulation. Chinese utility model patent, authorization announcement number "CN116753311A", discloses an eccentric butterfly valve with good sealing performance, including a valve body, a sealing ring, and a valve plate. A sliding seat is horizontally arranged on the surface of the valve plate, and a horizontal sliding groove is provided inside the sliding seat. A slider is slidably installed inside the horizontal sliding groove, and a transition column is fixedly installed inside the slider. A fixing sleeve is fixedly installed on the inner wall of the valve body.

[0003] The above technical solution, through the coordinated use of the drive rod, outer rotating cylinder, connecting rod and adapter column, slider and slide seat in the valve body, can increase the contact and squeezing force between the valve plate and the sealing ring by utilizing the connecting rod and adapter column, while not requiring the center of the valve plate to deviate from the center of the valve body, which is beneficial to improving the sealing effect between the valve plate and the sealing ring. However, the above technical solution still has certain defects. During long-term use, when controlling the start and stop of some liquids with high density or water flow mixed with a lot of impurities, it will cause great wear on the water-near end of the disc, which can easily cause the disc to damage the sealing ring inside the valve body when it closes, thus affecting the sealing performance of the butterfly valve during long-term use. Therefore, this utility model proposes a new solution. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a butterfly valve casting with a multi-directional sealing groove structure. This can solve the problem that when controlling the start and stop of some liquids with high density or a lot of impurities in the water flow, the near end of the disc will be greatly worn, which can easily cause the disc to damage the sealing ring inside the valve body when it is closed, thus affecting the sealing performance of the butterfly valve during long-term use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-directional sealing groove structure butterfly valve casting, including a butterfly valve body;

[0006] The butterfly valve sealing assembly is located inside the butterfly valve body. The butterfly valve sealing assembly includes a valve stem, which is rotatably connected inside the butterfly valve body. A valve disc is provided inside the butterfly valve body. Two valve disc connecting plates are fixedly connected to the surface of the butterfly valve body. Both valve disc connecting plates are fixedly connected to the valve disc.

[0007] Two sealing sleeves are fitted onto the surface of the valve disc, and two first sealing gaskets for sealing the valve disc and the sealing sleeves are provided between the two sealing sleeves. The two sealing sleeves are fixed together by two bolts.

[0008] Preferably, the inner wall of the butterfly valve housing is provided with a valve disc guide groove for guiding the rotation of the valve disc and the sealing sleeve.

[0009] Preferably, the surface of the valve disc has two first sealing grooves, and the inner walls of the two first sealing grooves are provided with second sealing gaskets for sealing the valve disc and the sealing sleeve.

[0010] Preferably, the surfaces of the two sealing sleeves are provided with two second sealing grooves, and the surfaces of the two first sealing gaskets are also provided with two second sealing grooves;

[0011] Two third sealing gaskets are provided on the outside of the valve disc for sealing the butterfly valve body and the two sealing sleeves. The two third sealing gaskets are respectively located inside the corresponding second sealing groove.

[0012] The two second sealing grooves on the surface of the sealing sleeve and the first sealing gasket are arranged in a "V" shape.

[0013] Preferably, an actuator is fixedly connected to the upper end of the butterfly valve housing, the valve stem rotates through the upper end of the butterfly valve housing and extends into the interior of the actuator, a worm gear is fixedly connected to the surface of the valve stem, a worm is rotatably connected inside the actuator, the worm meshes with the worm gear, and the worm rotates out of the actuator;

[0014] A handwheel is fixedly connected to the front end of the worm gear.

[0015] Preferably, the front end of the actuator is fixedly connected to a protective cover for protecting the handwheel.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This multi-directional sealing groove structure butterfly valve casting, through the setting of valve disc, sealing sleeve, and valve disc guide groove, realizes the opening and closing of the valve by rotating around the valve stem axis. Furthermore, the sealing sleeve is fixed with bolts, which also facilitates the timely replacement of the sealing sleeve, second sealing gasket, and third sealing gasket when the sealing sleeve wears out, effectively ensuring the sealing performance. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the multi-directional sealing groove structure butterfly valve casting of this utility model;

[0020] Figure 2 This is a schematic diagram of the valve stem of this utility model;

[0021] Figure 3 This is a schematic diagram of the first sealing groove of this utility model;

[0022] Figure 4 This is a schematic diagram of the third sealing gasket of this utility model;

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

[0024] Reference numerals in the attached drawings: 1. Butterfly valve body; 2. Actuator; 3. Valve stem; 4. Valve disc connecting plate; 5. Valve disc; 6. Sealing sleeve; 7. Valve disc guide groove; 8. First sealing gasket; 9. First sealing groove; 10. Second sealing gasket; 11. Second sealing groove; 12. Third sealing gasket; 13. Worm gear; 14. Worm; 15. Handwheel; 16. Protective cover. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. 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.

[0027] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Please see Figure 1-5This utility model provides a technical solution: a multi-directional sealing groove structure butterfly valve casting, including a butterfly valve body 1 and a butterfly valve sealing assembly. The butterfly valve sealing assembly is disposed inside the butterfly valve body 1 and includes a valve stem 3, which is rotatably connected inside the butterfly valve body 1. A valve disc 5 is disposed inside the butterfly valve body 1. Two valve disc connecting plates 4 are fixedly connected to the surface of the butterfly valve body 1. Both valve disc connecting plates 4 are fixedly connected to the valve disc 5. Two sealing sleeves 6 are sleeved on the surface of the valve disc 5. Two first sealing gaskets 8 for sealing the valve disc 5 and the sealing sleeves 6 are disposed between the two sealing sleeves 6. The two sealing sleeves 6 are fixed together by two bolts.

[0030] The inner wall of the butterfly valve housing 1 is provided with a valve disc guide groove 7 for guiding the rotation of the valve disc 5 and the sealing sleeve 6.

[0031] Two first sealing grooves 9 are formed on the surface of the valve disc 5, and the inner walls of the two first sealing grooves 9 are provided with second sealing gaskets 10 for sealing the valve disc 5 and the sealing sleeve 6.

[0032] Two second sealing grooves 11 are formed on the surfaces of the two sealing sleeves 6, and two second sealing grooves 11 are also formed on the surfaces of the two first sealing gaskets 8. Two third sealing gaskets 12 are provided on the outer side of the valve disc 5 for sealing the butterfly valve body 1 and the two sealing sleeves 6. The two third sealing gaskets 12 are respectively set inside the corresponding second sealing grooves 11. The two second sealing grooves 11 on the surfaces of the sealing sleeves 6 and the first sealing gaskets 8 are arranged in a "V" shape.

[0033] An actuator 2 is fixedly connected to the upper end of the butterfly valve housing 1. The valve stem 3 rotates through the upper end of the butterfly valve housing 1 and extends into the interior of the actuator 2. A worm gear 13 is fixedly connected to the surface of the valve stem 3. A worm 14 is rotatably connected inside the actuator 2. The worm 14 meshes with the worm gear 13. The worm 14 rotates and extends out of the actuator 2. A handwheel 15 is fixedly connected to the front end of the worm 14.

[0034] The front end of the actuator 2 is fixedly connected to a protective cover 16 for protecting the handwheel 15.

[0035] When using this device, the operator starts the entire operation process by turning the handwheel 15 when it is necessary to open or close the butterfly valve. The handwheel 15 is fixedly connected to the worm gear 14, and the rotation of the handwheel 15 will drive the worm gear 14 to rotate synchronously. Since the worm gear 14 and the worm wheel 13 mesh with each other, the rotation of the worm gear 14 will drive the worm wheel 13 to rotate. The worm wheel 13 is fixedly connected to the valve stem 3, so the rotation of the worm wheel 13 can drive the valve stem 3 to rotate inside the butterfly valve housing 1.

[0036] The protective cover 16 is designed to protect the handwheel 15, preventing accidental contact with the handwheel 15 when personnel approach, which could cause the valve disc 5 and sealing sleeve 6 to rotate, resulting in the butterfly valve opening or closing unexpectedly and affecting its sealing performance. The protective cover 16 also increases the difficulty of operation, preventing others from touching the handwheel 15 at will, reducing the safety risks caused by misoperation, and ensuring the stable operation of the pipeline system.

[0037] The rotation of valve stem 3 will cause the valve disc 5 connected to it to rotate around its own axis; valve disc 5 is firmly connected to butterfly valve body 1 through two valve disc connecting plates 4, ensuring the stability of valve disc 5 rotation; during the rotation of valve disc 5, valve disc guide groove 7 plays an important role; it is opened on the inner wall of butterfly valve body 1, which not only guides the rotation of valve disc 5 and sealing sleeve 6, but also precisely limits their rotation angle, so that valve disc 5 and sealing sleeve 6 can only rotate 90 degrees around valve stem 3 inside butterfly valve body 1, ensuring the accuracy and standardization of valve opening and closing actions.

[0038] Furthermore, when the butterfly valve is closed, the valve disc guide groove 7 can help limit the valve disc 5 and the sealing sleeve 6, thereby improving the pressure resistance of the butterfly valve during use.

[0039] In terms of sealing, the butterfly valve casting adopts a multi-directional sealing groove structure to achieve efficient sealing; two sealing sleeves 6 are fitted on the surface of the valve disc 5, and two first sealing gaskets 8 are set between the two sealing sleeves 6. The two sealing sleeves 6 are fixed together by bolts. This structure not only achieves the initial sealing between the valve disc 5 and the sealing sleeves 6, but also facilitates the timely replacement of the sealing sleeves 6, the second sealing gaskets 10 and the third sealing gaskets 12 when the sealing sleeves 6 are worn, effectively ensuring the sealing performance; two first sealing grooves 9 are opened on the surface of the valve disc 5, and the second sealing gaskets 10 set in the first sealing grooves 9 further enhance the sealing between the valve disc 5 and the sealing sleeves 6.

[0040] The surfaces of the two sealing sleeves 6 and the two first sealing gaskets 8 are all provided with "V"-shaped second sealing grooves 11. The two third sealing gaskets 12 provided on the outside of the valve disc 5 are respectively installed inside the corresponding second sealing grooves 11. This "V"-shaped sealing groove design allows the third sealing gaskets 12 to better fit the sealing groove under the action of fluid pressure when the valve is closed, increasing the sealing contact area, improving the sealing effect, and achieving effective sealing between the butterfly valve body 1 and the two sealing sleeves 6.

[0041] When valve disc 5 is rotated to the fully closed position, the multi-directional sealing groove structure works together to prevent fluid from passing through, thus achieving the closing function; when valve disc 5 is rotated to the open position, fluid can pass through the butterfly valve smoothly, thus achieving the opening function; throughout the process, all components work closely together, and the multi-directional sealing groove structure effectively prevents leakage, ensuring the stability and sealing performance of the butterfly valve during long-term use.

[0042] Furthermore, by setting up the valve disc 5, sealing sleeve 6, and valve disc guide groove 7, the valve can be opened and closed by rotating around the axis of the valve stem 3. The sealing sleeve 6 is fixed with bolts, which also facilitates the timely replacement of the sealing sleeve 6, the second sealing gasket 10, and the third sealing gasket 12 when the sealing sleeve 6 is worn, effectively ensuring the sealing performance.

[0043] Structural Description: Butterfly Valve Body 1: As the basic component of the butterfly valve, it provides internal space to accommodate other components, while its surface is used to fix the valve disc connecting plate 4, connect to the pipeline, and withstand the fluid pressure inside the pipeline;

[0044] Valve stem 3: connects worm gear 13 and valve disc 5, transmits the rotational power of worm gear 13, drives valve disc 5 to rotate around its own axis, and realizes the opening and closing operation of valve;

[0045] Valve disc 5: It is the key to controlling the flow of fluid. By rotating around the axis of valve stem 3, it allows fluid to pass through when open and blocks fluid when closed, and works with sealing sleeve 6 to achieve the sealing function.

[0046] Valve disc connecting plate 4: Securely connects valve disc 5 to butterfly valve body 1 to ensure the stability of valve disc 5 during rotation, so that it can rotate smoothly under the drive of valve stem 3;

[0047] Sealing sleeve 6: It is fitted onto the surface of valve disc 5. It achieves initial sealing between itself and valve disc 5 through first sealing gasket 8 and second sealing gasket 10, and achieves sealing between itself and butterfly valve body 1 through third sealing gasket 12. It is easy to disassemble and replace, ensuring sealing performance.

[0048] First sealing gasket 8: seals valve disc 5 and sealing sleeve 6, enhances the sealing between them, and is part of the multi-directional sealing structure;

[0049] Valve disc guide groove 7: It is formed on the inner wall of the butterfly valve body 1 to guide the rotation of valve disc 5 and sealing sleeve 6, and precisely limit its rotation angle to 90 degrees to ensure that the valve opening and closing actions are accurate and standardized. It can also assist in limiting the valve when closing and improve the pressure resistance.

[0050] First sealing groove 9: Located on the surface of valve disc 5, used to install second sealing gasket 10, further enhancing the sealing effect between valve disc 5 and sealing sleeve 6;

[0051] Second sealing gasket 10: Installed in the first sealing groove 9, it enhances the sealing between valve disc 5 and sealing sleeve 6 and is an important component of the multi-directional sealing structure.

[0052] The second sealing groove 11 is formed on the surface of the sealing sleeve 6 and the first sealing gasket 8 in a "V" shape. It is used to install the third sealing gasket 12. The "V" shape design can make the third sealing gasket 12 fit better when the valve is closed, increase the sealing contact area and improve the sealing effect.

[0053] The third sealing gasket 12 is installed in the second sealing groove 11 to achieve effective sealing between the butterfly valve body 1 and the two sealing sleeves 6. It is a key component of the multi-directional sealing structure.

[0054] Actuator 2: Internally equipped with worm gear 13 and worm 14, it provides the power source for the rotation of valve stem 3 and is the drive mechanism for operating the butterfly valve;

[0055] Worm gear 13: It is fixedly connected to valve stem 3 and rotates under the drive of worm gear 14, thereby driving valve stem 3 to rotate;

[0056] Worm 14: meshes with worm wheel 13, converting the rotation of handwheel 15 into the rotation of worm wheel 13, thereby realizing power transmission;

[0057] Handwheel 15: By turning the handwheel 15, the operator drives the worm gear 14 to rotate, thereby initiating the opening or closing operation of the entire butterfly valve;

[0058] Protective cover 16: Protects the handwheel 15 to prevent accidental contact with the handwheel 15 from causing the valve disc 5 and sealing sleeve 6 to rotate, thus avoiding accidental opening or closing of the butterfly valve, reducing the risk of misoperation, and ensuring the stable operation of the pipeline system.

[0059] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A butterfly valve casting with a multi-directional sealing groove structure, characterized in that: Includes the butterfly valve housing (1); The butterfly valve sealing assembly is located inside the butterfly valve housing (1). The butterfly valve sealing assembly includes a valve stem (3), which is rotatably connected inside the butterfly valve housing (1). A valve disc (5) is provided inside the butterfly valve housing (1). Two valve disc connecting plates (4) are fixedly connected to the surface of the butterfly valve housing (1). Both valve disc connecting plates (4) are fixedly connected to the valve disc (5). Two sealing sleeves (6) are fitted onto the surface of the valve disc (5). Two first sealing gaskets (8) for sealing the valve disc (5) and the sealing sleeves (6) are provided between the two sealing sleeves (6). The two sealing sleeves (6) are fixed together by two bolts.

2. The butterfly valve casting with a multi-directional sealing groove structure according to claim 1, characterized in that: The inner wall of the butterfly valve housing (1) is provided with a valve disc guide groove (7) for guiding the rotation of the valve disc (5) and the sealing sleeve (6).

3. The butterfly valve casting with a multi-directional sealing groove structure according to claim 1, characterized in that: The valve disc (5) has two first sealing grooves (9) on its surface, and the inner walls of the two first sealing grooves (9) are provided with second sealing gaskets (10) for sealing the valve disc (5) and the sealing sleeve (6).

4. The butterfly valve casting with a multi-directional sealing groove structure according to claim 1, characterized in that: Two second sealing grooves (11) are formed on the surfaces of the two sealing sleeves (6), and two second sealing grooves (11) are also formed on the surfaces of the two first sealing gaskets (8); Two third sealing gaskets (12) are provided on the outside of the valve disc (5) for sealing the butterfly valve body (1) and the two sealing sleeves (6). The two third sealing gaskets (12) are respectively located inside the corresponding second sealing grooves (11). The two second sealing grooves (11) on the surfaces of the sealing sleeve (6) and the first sealing gasket (8) are arranged in a "V" shape.

5. The butterfly valve casting with a multi-directional sealing groove structure according to claim 1, characterized in that: An actuator (2) is fixedly connected to the upper end of the butterfly valve housing (1). The valve stem (3) rotates through the upper end of the butterfly valve housing (1) and extends into the interior of the actuator (2). A worm wheel (13) is fixedly connected to the surface of the valve stem (3). A worm (14) is rotatably connected inside the actuator (2). The worm (14) meshes with the worm wheel (13). The worm (14) rotates and extends out of the actuator (2). A handwheel (15) is fixedly connected to the front end of the worm (14).

6. The butterfly valve casting with a multi-directional sealing groove structure according to claim 5, characterized in that: The actuator (2) is fixedly connected to a protective cover (16) for protecting the handwheel (15).

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