Sanitary butterfly valve

Abstract

The utility model discloses a sanitary butterfly valve which comprises a valve body and a valve clack arranged in the valve body, a pressing handle is arranged at the upper end of the valve body and connected with the valve clack through a rotating shaft, the sanitary butterfly valve further comprises a connecting base and a sealing ring mechanism, the connecting base is arranged at the outlet end of the valve body, and the sealing ring mechanism is arranged in the connecting base. The sealing ring mechanism comprises a sealing ring body, the outer wall of one end of the sealing ring body protrudes outwards to form a first protruding ring, the outer wall of the other end of the sealing ring body protrudes outwards to form a second protruding ring, a limiting part is arranged on the outer wall of the second protruding ring, and the limiting part comprises a horizontally-arranged first ring body and a vertically-arranged second ring body. By means of mutual cooperation of the sealing ring mechanism and the connecting base, stable connection between external water pipes can be achieved, the sealing ring mechanism can be stably installed in the connecting base, axial position deviation cannot occur even if the sealing ring mechanism makes contact with the external water pipes, and the falling-off phenomenon cannot occur.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a sanitary butterfly valve. Background Technology

[0002] Sanitary butterfly valves feature a standard electropolished surface, ensuring a smooth finish that guarantees cleanliness, eliminates media accumulation areas, and prevents potential contamination. Quick-release valve assembly and disassembly make valve opening and maintenance fast and easy, minimizing process downtime. Sanitary, automatic, or manual operated butterfly valves are widely used in various fields such as beer, beverages, dairy products, juice processing, pharmaceuticals, and biotechnology.

[0003] Existing technology CN218408563U discloses a sanitary butterfly valve. A fixing mechanism is provided on one side of the valve body, and a shell is welded to the other side of the valve body. A valve shaft is movably connected inside the shell, and a disc is fixedly connected to one end of the valve shaft. A filtering mechanism is provided inside the valve body. In this sanitary butterfly valve, through the fixing mechanism and the filtering mechanism, a filter screen is installed inside the valve body. After the filter screen is placed inside the valve body, a positioning rod presses against the inner wall of the valve body, the spring retracts, and the positioning rod enters the positioning hole. At this time, the spring returns to its original position, completing the installation of the filter screen. Then, a water pipe is connected to the valve body, with a certain gap between the water pipe and the valve body. A sealing ring is tightly fitted inside the valve body.

[0004] However, in this existing technology, the sealing ring is attached to the inner wall of the valve body. When the external water pipe enters the valve body, the end face of the water pipe is likely to touch the sealing ring, causing the sealing ring to loosen and fall off, affecting the normal sealing. Utility Model Content

[0005] The purpose of this invention is to provide a sanitary butterfly valve to solve the above-mentioned technical problems.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A sanitary butterfly valve includes a valve body and a valve disc disposed inside the valve body. A pressing handle is provided at the upper end of the valve body. The pressing handle is connected to the valve disc via a rotating shaft. The valve body also includes a connecting seat and a sealing ring mechanism. The connecting seat is disposed at the outlet end of the valve body, and the sealing ring mechanism is disposed inside the connecting seat.

[0008] The sealing ring mechanism includes a sealing ring body. One end of the outer wall of the sealing ring body protrudes outward to form a first convex ring, and the other end of the outer wall of the sealing ring body protrudes outward to form a second convex ring. The outer wall of the second convex ring is provided with a limiting part. The limiting part includes a horizontally arranged first ring body and a vertically arranged second ring body. The first ring body and the second ring body are intersecting. The inner wall of the second ring body is integrally connected to the outer wall of the second convex ring. The first convex ring, the first ring body, and the second ring body are all connected to the connecting seat.

[0009] Preferably, the connecting seat includes a base and a connecting cylinder connected to one end of the base, and the base is connected to the valve body.

[0010] As a further preferred embodiment, it also includes an elastic support piece, wherein a first annular groove is formed inside the first ring body, and the elastic support piece is disposed within the first annular groove.

[0011] As a further preferred embodiment, one end of the base is provided with a second annular groove, one end of the connecting cylinder is provided with a third annular groove, and a fourth annular groove is provided on the side of the third annular groove near the base. The first ring body is disposed in the second annular groove and the third annular groove, the second ring body is disposed in the fourth annular groove, and the outer wall of the sealing ring body is in contact with the inner wall of the base and the connecting cylinder.

[0012] Preferably, an "L"-shaped fixing part is provided on the inner wall of the other end of the base, and a slot is provided on the side of the fixing part near the sealing ring body, and the other end of the sealing ring body is inserted into the slot.

[0013] Preferably, the sealing ring body is made of nitrile rubber.

[0014] Preferably, a second sealing ring mechanism is also included, wherein the sealing ring is disposed between the base and the valve body, and one side of the sealing ring is arranged in a cross-section of a "+".

[0015] As a further preferred embodiment, the outer wall of the outlet end of the valve body is provided with a fifth annular groove, and the other end of the base is provided with a sixth annular groove, with the sealing ring disposed in the fifth annular groove and the sixth annular groove.

[0016] The above technical solution has the following advantages or beneficial effects:

[0017] In this invention, the sealing ring mechanism and the connecting seat cooperate to achieve a stable connection between external water pipes. The sealing ring mechanism can be stably installed inside the connecting seat, and there will be no axial displacement or detachment even when it comes into contact with external water pipes. Attached Figure Description

[0018] Figure 1 This utility model is a three-dimensional sanitary butterfly valve. Figure 1 ;

[0019] Figure 2 This utility model is a three-dimensional sanitary butterfly valve. Figure 2 ;

[0020] Figure 3 This is a side view of the valve body and the connecting seat in this utility model;

[0021] Figure 4 yes Figure 3 Sectional view along the middle AA direction;

[0022] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0023] Figure 6 This is an explosion diagram of the sanitary butterfly valve in this utility model. Figure 1 ;

[0024] Figure 7 This is an explosion diagram of the sanitary butterfly valve in this utility model. Figure 2 .

[0025] In the diagram: 1. Valve body; 2. Press handle; 3. Connecting seat; 4. Sealing ring mechanism; 5. Sealing ring body; 6. First convex ring; 7. Second convex ring; 8. First ring body; 9. Second ring body; 10. Base; 11. Connecting cylinder; 12. Elastic support plate; 13. First annular groove; 14. Second annular groove; 15. Third annular groove; 16. Fourth annular groove; 17. Fixing part; 18. Sealing ring; 19. Fifth annular groove; 20. Sixth annular groove; 21. Clamping structure. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Figure 1 This utility model is a three-dimensional sanitary butterfly valve. Figure 1 ; Figure 2 This utility model is a three-dimensional sanitary butterfly valve. Figure 2 ; Figure 3 This is a side view of the valve body and the connecting seat in this utility model; Figure 4 yes Figure 3 Sectional view along the middle AA direction; Figure 5 yes Figure 4 Enlarged view of point B in the middle; Figure 6 This is an explosion diagram of the sanitary butterfly valve in this utility model. Figure 1 ; Figure 7 This is an explosion diagram of the sanitary butterfly valve in this utility model. Figure 2 Please see. Figures 1 to 7 The diagram illustrates a preferred embodiment of a sanitary butterfly valve, comprising a valve body 1 and a valve disc disposed within the valve body 1. A pressure handle 2 is located at the upper end of the valve body 1, and the pressure handle 2 is connected to the valve disc via a rotating shaft. The valve also includes a connecting seat 3 and a sealing ring mechanism 4. The connecting seat 3 is located at the outlet end of the valve body 1, and the sealing ring mechanism 4 is disposed inside the connecting seat 3. In this embodiment, see [reference needed]. Figure 1As shown, a fixed sleeve is provided at the upper end of the valve body 1, and the rotating shaft is located inside the fixed sleeve and can rotate within the fixed sleeve. The pressing handle 2 can drive the rotating shaft to rotate. A fixed plate is provided at the upper end of the fixed sleeve, and the outer wall of the fixed plate is provided with toothed grooves. The pressing block at the bottom of the pressing handle 2 is provided with a locking block. The pressing block and the pressing handle 2 are rotatably connected. By pressing the pressing block, the locking block at the end of the pressing block can disengage from the toothed groove. At this time, the pressing handle 2 can be rotated, thereby driving the rotating shaft to rotate, and thus driving the valve disc to rotate. The pressing block and the pressing handle 2 are rotatably connected by a connecting shaft. A torsion spring is provided on the connecting shaft, so that when the pressing block is not pressed, the locking block can be aligned with the toothed groove.

[0030] The sealing ring mechanism 4 includes a sealing ring body 5. One end of the outer wall of the sealing ring body 5 protrudes outward to form a first convex ring 6, and the other end of the outer wall of the sealing ring body 5 protrudes outward to form a second convex ring 7. The outer wall of the second convex ring 7 is provided with a limiting part, which includes a horizontally arranged first ring body 8 and a vertically arranged second ring body 9. The first ring body 8 and the second ring body 9 are intersecting. The inner wall of the second ring body 9 is integrally connected to the outer wall of the second convex ring 7. The first convex ring 6, the first ring body 8, and the second ring body 9 are all connected to the connecting seat 3. In this embodiment, the first ring body 8 and the second ring body 9 are integrally connected, the second ring body 9 and the second convex ring 7 are integrally connected, the second convex ring 7 and the sealing ring body 5 are integrally connected, and the first convex ring 6 and the sealing ring body 5 are integrally connected. In use, the first ring body 8 and the second ring body 9 are set inside the side wall of the connecting seat 3, and the first convex ring 6 is also set inside the side wall of the connecting seat 3. This can stably connect the sealing ring body 5 and prevent the sealing ring 18 from detaching or shifting in axial position due to repeated contact of the sealing ring 18 by the external water pipe.

[0031] Furthermore, as a preferred embodiment, the connecting seat 3 includes a base 10 and a connecting cylinder 11 connected to one end of the base 10, and the base 10 is connected to the valve body 1. In this embodiment, the base 10 and the connecting cylinder 11 can be integrally connected or welded together, and the base 10 and the valve body 1 are connected by bolts.

[0032] Furthermore, as a preferred embodiment, it also includes an elastic support piece 12. A first annular groove 13 is formed inside the first ring body 8, and the elastic support piece 12 is disposed within the first annular groove 13. The elastic support piece 12, disposed inside the first ring body 8, increases the support strength of the first ring body 8 and prevents the first ring body 8 from detaching from the first annular groove 13 and the second annular groove 14. It possesses excellent resistance to aging, heat, ozone, weathering, water vapor, and acids and alkalis, and has a wide range of applications, suitable for various fields.

[0033] Furthermore, as a preferred embodiment, a second annular groove 14 is provided at one end of the base 10, a third annular groove 15 is provided at one end of the connecting cylinder 11, and a fourth annular groove 16 is provided on the side of the third annular groove 15 near the base 10. A first ring body 8 is disposed within the second annular groove 14 and the third annular groove 15, and a second ring body 9 is disposed within the fourth annular groove 16. The outer wall of the sealing ring body 5 contacts the inner walls of the base 10 and the connecting cylinder 11. See also Figure 5 , Figure 6 and Figure 7 As shown, the first ring body 8 can be injection molded in the second annular groove 14 and the third annular groove 15, while the second ring body 9 can be injection molded in the fourth annular groove 16. With this arrangement, the sealing ring body 5 can be prevented from falling off, and the sealing ring body 5 can be made more stable after installation.

[0034] Furthermore, as a preferred embodiment, an "L"-shaped fixing part 17 is provided on the inner wall of the other end of the base 10. A slot is provided on the side of the fixing part 17 near the sealing ring body 5. The other end of the sealing ring body 5 is inserted into the slot. This can prevent the fluid in the valve body 1 from directly scouring the end of the sealing ring body 5, thereby protecting the sealing ring body 5 and reducing wear on the sealing ring body 5.

[0035] Furthermore, as a preferred embodiment, the sealing ring body 5 is made of nitrile rubber, which is suitable for use with water, oil, waste liquid, etc., and has the characteristics of oil resistance, heat resistance, and wear resistance. Of course, the sealing ring body 5 can also be made of EPDM rubber, which has excellent aging resistance, heat resistance, ozone resistance, weather resistance, water vapor resistance, and acid and alkali resistance, and has a wide range of applications, making it suitable for various fields.

[0036] Furthermore, as a preferred embodiment, a sealing ring 18 is also included. The sealing ring 18 is disposed between the base 10 and the valve body 1, and one side of the sealing ring 18 has a cross-section in the shape of a cross. For details on the structure of the sealing ring 18, please refer to [link to relevant documentation]. Figure 7 As shown, it is mainly used for sealing between the base 10 and the valve body 1.

[0037] Furthermore, as a preferred embodiment, a fifth annular groove 19 is formed on the outer wall of the outlet end of the valve body 1, and a sixth annular groove 20 is formed on the other end of the base 10. The second sealing ring mechanism 4 is disposed in the fifth annular groove 19 and the sixth annular groove 20. The sealing ring 18 can be injection molded in the fifth annular groove 19 and the sixth annular groove 20.

[0038] In this embodiment, see Figure 1 As shown, a clamping structure 21 is provided on the outer wall of the connecting cylinder 11. The clamping structure 21 is an existing structure and will not be limited here.

[0039] In use, the valve body 1 is installed in the designated position with bolts. Then, one end of the external water pipe is inserted into the other end of the connecting cylinder 11. Since the first protruding ring 6 at one end of the sealing ring body 5 is fixed inside the side wall of the connecting cylinder 11, the water pipe will not push the sealing ring body 5 to move axially when it touches the sealing ring body 5, nor will it cause the sealing ring body 5 to fall off. The water pipe can easily enter the sealing ring body 5 until the end of the water pipe abuts against the fixing part 17. At this time, the water pipe is installed in place. Then, the clamp structure 21 on the outer wall of the connecting cylinder 11 is tightened so that the inner wall of the connecting cylinder 11 can squeeze the sealing ring body 5, so that the sealing ring body 5 can make tight contact with the outer wall of the water pipe to achieve a sealing effect and prevent fluid leakage.

[0040] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sanitary butterfly valve, comprising a valve body and a valve disc disposed inside the valve body, wherein a pressing handle is provided at the upper end of the valve body, and the pressing handle is connected to the valve disc via a rotating shaft, characterized in that, It also includes a connecting seat and a sealing ring mechanism, wherein the connecting seat is located at the outlet end of the valve body and the sealing ring mechanism is provided inside the connecting seat; The sealing ring mechanism includes a sealing ring body. One end of the outer wall of the sealing ring body protrudes outward to form a first convex ring, and the other end of the outer wall of the sealing ring body protrudes outward to form a second convex ring. The outer wall of the second convex ring is provided with a limiting part. The limiting part includes a horizontally arranged first ring body and a vertically arranged second ring body. The first ring body and the second ring body are intersecting. The inner wall of the second ring body is integrally connected to the outer wall of the second convex ring. The first convex ring, the first ring body, and the second ring body are all connected to the connecting seat.

2. The sanitary butterfly valve as described in claim 1, characterized in that, The connecting seat includes a base and a connecting cylinder connected to one end of the base, and the base is connected to the valve body.

3. The sanitary butterfly valve as described in claim 2, characterized in that, It also includes an elastic support piece, wherein a first annular groove is formed inside the first ring body, and the elastic support piece is disposed in the first annular groove.

4. The sanitary butterfly valve as described in claim 2, characterized in that, One end of the base is provided with a second annular groove, one end of the connecting cylinder is provided with a third annular groove, and a fourth annular groove is provided on the side of the third annular groove near the base. The first ring body is disposed in the second annular groove and the third annular groove, the second ring body is disposed in the fourth annular groove, and the outer wall of the sealing ring body is in contact with the inner wall of the base and the connecting cylinder.

5. The sanitary butterfly valve as described in claim 4, characterized in that, An "L"-shaped fixing part is provided on the inner wall of the other end of the base. A slot is provided on the side of the fixing part near the sealing ring body, and the other end of the sealing ring body is inserted into the slot.

6. The sanitary butterfly valve as described in claim 1, characterized in that, The sealing ring body is made of nitrile rubber.

7. The sanitary butterfly valve as described in claim 2, characterized in that, It also includes a sealing ring, which is disposed between the base and the valve body, and one side of the sealing ring is arranged in a cross-section of a "+".

8. The sanitary butterfly valve as described in claim 7, characterized in that, The valve body has a fifth annular groove on the outer wall of the outlet end, and the base has a sixth annular groove on the other end. The sealing ring is located in the fifth annular groove and the sixth annular groove.

Images