Butterfly valve seat with replaceable sealing ring

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a butterfly valve seat with replaceable sealing rings, which comprises a valve seat main body, a sealing ring A and a sealing ring B are arranged in an inner cavity of the valve seat main body, the sealing ring A and the sealing ring B are arranged front and back, and limiting components are arranged between the sealing ring A and the valve seat main body and between the sealing ring B and the valve seat main body. A fastening assembly is arranged between the sealing ring A and the sealing ring B. The limiting assembly comprises trapezoidal grooves formed in the positions, close to the two sides, of the front side of the valve seat body and trapezoidal blocks slidably connected into inner cavities of the trapezoidal grooves, the opposite sides of the trapezoidal blocks are fixedly connected with the sealing ring A, and magnetic blocks A are fixedly installed on the rear sides of the trapezoidal blocks. Under the cooperative use of the limiting assembly, the sealing ring A or the sealing ring B can be magnetically attracted into the inner cavity of the valve seat main body through the arrangement of a trapezoidal block, a magnetic block A and a magnetic block B, and the trapezoidal block is slidably connected into the inner cavity of the trapezoidal groove, so that the sealing ring A can be disassembled and replaced subsequently.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically to a butterfly valve seat with a replaceable sealing ring. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve that can be used to control the flow of various types of fluids such as air, water, and steam. When in use, the butterfly valve is driven by a transmission mechanism to rotate the flap, and the opening and closing of the butterfly valve is controlled by the contact and separation between the flap and the valve seat.

[0003] A sealing ring is usually installed in the inner cavity of the valve seat to improve the sealing performance of the butterfly valve when it is closed. However, the sealing ring ages after long-term use, which reduces the sealing performance of the valve seat. Moreover, the existing sealing ring is inconvenient for operators to remove from the inner cavity of the valve seat, which reduces the efficiency of sealing ring replacement.

[0004] Therefore, we propose a butterfly valve seat with a replaceable sealing ring to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a butterfly valve seat with a replaceable sealing ring to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a butterfly valve seat with replaceable sealing rings, comprising a valve seat body, wherein a sealing ring A and a sealing ring B are provided in the inner cavity of the valve seat body, and the sealing ring A and the sealing ring B are arranged in a front-to-back manner, and a limit component is provided between the sealing ring A, the sealing ring B and the valve seat body, and a fastening component is provided between the sealing ring A and the sealing ring B.

[0007] The limiting component includes a trapezoidal groove on the front side of the valve seat body near both sides and a trapezoidal block slidably connected in the inner cavity of the trapezoidal groove. The opposite side of the trapezoidal block is fixedly connected to the sealing ring A. A magnetic block A is fixedly installed on the rear side of the trapezoidal block. A magnetic block B is provided on the rear side of the magnetic block A, and the rear side of the magnetic block B is fixedly connected to the trapezoidal groove.

[0008] Preferably, the magnetic blocks A and B have different magnetic properties.

[0009] Preferably, the fastening assembly includes a guide block fixedly installed on the front side of the sealing ring B near the top and bottom, and a slot opened on one side of the guide block. Each slot has a locking block movably inserted into its inner cavity. A movable block is fixedly installed on the other side of the locking block, and a pull rod is fixedly installed on the other side of the movable block. A handle is fixedly installed at the end of the pull rod.

[0010] Preferably, a telescopic rod is fixedly installed on the other side of the movable block near the top and bottom. A fixed block is fixedly installed at the end of the telescopic rod, and the rear side of the fixed block is fixedly connected to the sealing ring A. A spring is movably sleeved on the outer periphery of the telescopic rod, and the two ends of the spring are fixedly connected to the movable block and the fixed block respectively.

[0011] Preferably, each of the fixing blocks has a through hole on the other side, and the other end of the pull rod moves through the inner cavity of the through hole.

[0012] Preferably, the front side of the sealing ring A is provided with an opening, and the front side of the guide block moves through the inner cavity of the adjacent opening.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. With the cooperation of the limiting component, the sealing ring A or sealing ring B can be magnetically attracted to the inner cavity of the valve seat body by setting the trapezoidal block, magnetic block A and magnetic block B. The trapezoidal block is slidably connected in the inner cavity of the trapezoidal groove, which facilitates the subsequent disassembly and replacement of sealing ring A.

[0015] 2. With the cooperation of the fastening components, the locking block can be movably inserted into the inner cavity of the adjacent slot, and the telescopic rod and spring can stably insert the locking block into the inner cavity of the slot, improving the stability of the connection between sealing ring A and sealing ring B. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the valve seat body of this utility model;

[0018] Figure 3 Exploded view of the valve seat body, sealing ring A and sealing ring B of this utility model;

[0019] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 For the present utility model Figure 4 Enlarged view at point B in the middle;

[0021] Figure 6 For the present utility model Figure 3 Enlarged view of point C in the middle.

[0022] In the diagram: 1. Valve seat body; 2. Sealing ring A; 3. Sealing ring B; 4. Trapezoidal groove; 5. Trapezoidal block; 6. Magnetic block A; 7. Magnetic block B; 8. Guide block; 9. Slot; 10. Locking block; 11. Movable block; 12. Pull rod; 13. Handle; 14. Telescopic rod; 15. Spring; 16. Fixed block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Please see Figure 1-6 A butterfly valve seat with replaceable sealing rings includes a valve seat body 1. The inner cavity of the valve seat body 1 is provided with sealing rings A2 and B3, and sealing rings A2 and B3 are arranged front and rear. Limiting components are provided between sealing rings A2 and B3 and the valve seat body 1, and fastening components are provided between sealing rings A2 and B3.

[0026] The limiting component includes a trapezoidal groove 4 opened on the front side of the valve seat body 1 near both sides and a trapezoidal block 5 slidably connected in the inner cavity of the trapezoidal groove 4. The opposite side of the trapezoidal block 5 is fixedly connected to the sealing ring A2. A magnetic block A6 is fixedly installed on the rear side of the trapezoidal block 5. A magnetic block B7 is provided on the rear side of the magnetic block A6, and the rear side of the magnetic block B7 is fixedly connected to the trapezoidal groove 4. The magnetic blocks A6 and B7 have different magnetic properties.

[0027] Specifically, with the cooperation of the limiting component, the sealing ring A2 or sealing ring B3 can be magnetically attracted to the inner cavity of the valve seat body 1 by setting trapezoidal block 5, magnetic block A6 and magnetic block B7, and the trapezoidal block 5 is slidably connected to the inner cavity of trapezoidal groove 4, which facilitates the subsequent disassembly and replacement of sealing ring A2.

[0028] Example 2

[0029] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figure 3 , Figure 4 , Figure 5 and Figure 6The fastening assembly includes a guide block 8 fixedly installed on the front side of the sealing ring B3 near the top and bottom, and a slot 9 opened on one side of the guide block 8. The inner cavity of the slot 9 is movably inserted with a locking block 10. A movable block 11 is fixedly installed on the other side of the locking block 10. A pull rod 12 is fixedly installed on the other side of the movable block 11. A handle 13 is fixedly installed at the end of the pull rod 12.

[0030] Specifically, with the cooperation of the fastening components, the locking block 10 can be movably inserted into the inner cavity of the adjacent locking slot 9, which is beneficial for fastening the sealing ring A2 and sealing ring B3 and improving the stability of sealing ring A2 and sealing ring B3.

[0031] Telescopic rods 14 are fixedly installed on the other side of the movable block 11 near the top and bottom. A fixing block 16 is fixedly installed at the end of the telescopic rod 14. The rear side of the fixing block 16 is fixedly connected to the sealing ring A2. Springs 15 are movably sleeved on the outer periphery of the telescopic rod 14. The two ends of the springs 15 are fixedly connected to the movable block 11 and the fixing block 16 respectively.

[0032] Specifically, the telescopic rod 14 and spring 15 enable the locking block 10 to be stably inserted into the inner cavity of the locking slot 9, thereby improving the stability of the connection between the sealing ring A2 and the sealing ring B3.

[0033] Each of the fixed blocks 16 has a through hole on the other side, and the other end of the pull rod 12 moves through the inner cavity of the through hole.

[0034] The front side of the sealing ring A2 is provided with an opening, and the front side of the guide block 8 moves through the inner cavity of the adjacent opening.

[0035] Working principle: When using this utility model, if it is necessary to disassemble and replace sealing rings A2 and B3, the operator can pull the two handles 13 to the other side. This will cause the pull rod 12 fixed on the handle 13 to pull the adjacent movable block 11 to the other side. The locking block 10 fixed on the movable block 11 will move it away from the inner cavity of the locking groove 9 and contact the limit between sealing rings A2 and B3. Then, since sealing rings A2 and B3 are magnetically attracted in the inner cavity of the valve seat body 1, when the sealing rings A2 and B3 are released, the operator can directly pull sealing ring A2 or sealing ring B3 away from the inner cavity of the valve seat body 1, thus facilitating the disassembly and replacement of sealing rings A2 and B3.

[0036] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A butterfly valve seat with replaceable sealing ring, comprising a seat body (1), characterized in that: The valve seat body (1) is provided with a sealing ring A (2) and a sealing ring B (3) in its inner cavity. The sealing ring A (2) and the sealing ring B (3) are arranged in a front-to-back manner. A limiting component is provided between the sealing ring A (2) and the sealing ring B (3) and the valve seat body (1). A fastening component is provided between the sealing ring A (2) and the sealing ring B (3). The limiting component includes a trapezoidal groove (4) opened on the front side of the valve seat body (1) near both sides and a trapezoidal block (5) slidably connected in the inner cavity of the trapezoidal groove (4). The opposite side of the trapezoidal block (5) is fixedly connected to the sealing ring A (2). A magnetic block A (6) is fixedly installed on the rear side of the trapezoidal block (5). A magnetic block B (7) is provided on the rear side of the magnetic block A (6), and the rear side of the magnetic block B (7) is fixedly connected to the trapezoidal groove (4).

2. The butterfly valve seat with replaceable sealing ring according to claim 1, characterized in that: The magnetic blocks A (6) and B (7) are magnetically different.

3. The butterfly valve seat with replaceable sealing ring according to claim 1, characterized in that: The fastening assembly includes a guide block (8) fixedly installed on the front side of the sealing ring B (3) near the top and bottom, and a slot (9) opened on one side of the guide block (8). The inner cavity of the slot (9) is movably inserted with a block (10). A movable block (11) is fixedly installed on the other side of the block (10). A pull rod (12) is fixedly installed on the other side of the movable block (11). A handle (13) is fixedly installed at the end of the pull rod (12).

4. A butterfly valve seat with a replaceable sealing ring according to claim 3, characterized in that: Telescopic rods (14) are fixedly installed on the other side of the movable block (11) near the top and bottom. A fixed block (16) is fixedly installed at the end of the telescopic rod (14), and the rear side of the fixed block (16) is fixedly connected to the sealing ring A (2). A spring (15) is movably sleeved on the outer periphery of the telescopic rod (14), and the two ends of the spring (15) are fixedly connected to the movable block (11) and the fixed block (16) respectively.

5. A butterfly valve seat with a replaceable sealing ring according to claim 4, characterized in that: Each of the fixed blocks (16) has a through hole on the other side, and the other end of the pull rod (12) moves through the inner cavity of the through hole.

6. The butterfly valve seat with replaceable sealing ring according to claim 1, characterized in that: The front side of the sealing ring A (2) is provided with an opening, and the front side of the guide block (8) moves through the inner cavity of the adjacent opening.

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