Combined butterfly valve

Abstract

The utility model discloses a combined butterfly valve which comprises a butterfly valve body, positioning rings are fixedly installed at the two ends of the butterfly valve body, and the other ends of the two positioning rings abut against positioning seats in a sealed mode. Gate valves are arranged on the two sides of the butterfly valve body, and one gate valve is fixedly connected with the adjacent positioning seat. And the outer surface of the other gate valve is fixedly sleeved with a shell, the inner walls of the two sides of the shell are jointly and rotationally connected with a circular ring, and a self-locking driving assembly is jointly installed between the circular ring and the shell. According to the butterfly valve, the positioning ring, the positioning base, the gate valve, the shell, the circular ring, the self-locking driving assembly, the synchronous driving assembly, the screw rod, the movable ring, the movable base and the annular piston are arranged, an original bolt and flange connecting structure is replaced, rapid connection and disassembly of the butterfly valve body and the gate valve can be achieved, the disassembly and assembly time of the butterfly valve body is shortened, and the disassembly and assembly efficiency is improved. Therefore, the influence on the working process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a combined butterfly valve. Background Art

[0002] Butterfly valve is a simple regulating valve, usually used to control the switch of low-pressure pipeline media. It is generally disc-shaped and can be turned on and off by rotating around the valve axis. Valves are usually used to control the switch of air, water, steam, oil and other media. The appearance and use of different valves vary greatly.

[0003] At present, the butterfly valve is composed of a valve body, a valve stem, a butterfly plate and a sealing ring.

[0004] The prior art publication number is CN219796267U, which is a combined butterfly valve structure, including a butterfly valve body; two ends of the butterfly valve body are respectively connected with a plug valve, the butterfly valve body and the two plug valves are arranged horizontally, and the plug valve is detachably connected to the butterfly valve body. The butterfly valve and the plug valve are used in combination to ensure sealing and facilitate maintenance.

[0005] However, in actual use, since the butterfly valve body and the two gate valves are connected by bolts and flanges, the number of bolts to be disassembled and assembled is eight or more, and the disassembly and assembly process needs to be carried out one by one. Therefore, when the butterfly valve body fails, it takes a long time and effort to disassemble and assemble all the bolts, which will also affect the work progress. For this reason, improvements are proposed. Utility Model Content

[0006] The utility model is a combined butterfly valve proposed to solve the shortcomings in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a combined butterfly valve, comprising a butterfly valve body, both ends of which are fixedly mounted with positioning rings, and the other ends of the two positioning rings are sealed against positioning seats;

[0008] Both sides of the butterfly valve body are provided with a plug valve, and one of the plug valves is fixedly connected to the adjacent positioning seat;

[0009] The outer surface of the other gate valve is fixedly sleeved with a shell, and the inner walls on both sides of the shell are rotatably connected with a ring, and a self-locking drive component is installed between the ring and the shell;

[0010] A synchronous drive assembly is also installed between the ring and the shell;

[0011] A plurality of screws are rotatably connected to the inner wall of one side of the shell, and the screws are connected to the synchronous drive assembly, the outer surfaces of the plurality of screws are commonly threadedly sleeved with a movable ring, and the movable ring penetrates the shell and is slidably connected thereto, the other end of the movable ring is fixedly connected to a movable seat, and the movable seat is fixedly connected to an adjacent positioning seat, the inner surface of the movable seat is sealed with an annular piston, and the annular piston is fixedly sleeved on the outer surface of the gate valve.

[0012] Furthermore, the two positioning rings each include a positioning ring body, and the positioning ring body is fixedly connected to the butterfly valve body, and a plurality of positioning grooves are evenly formed on one side of the outer surface of the positioning ring body.

[0013] Furthermore, the two positioning seats each include a sealing seat, and the sealing seat is fixedly connected to the adjacent movable seat and the gate valve, a plurality of positioning blocks are fixedly connected to the inner surface of the sealing seat, and the positioning blocks match the positioning grooves, two sealing rings are fixedly connected to the inner surface of the sealing seat, and the positioning grooves cooperate with the positioning blocks, which is conducive to the positioning and docking of the positioning seat and the positioning ring.

[0014] Furthermore, the two sealing rings are both in contact with the outer wall of the positioning ring body, which has a sealing effect and ensures the sealing performance of the contact point between the positioning ring and the positioning seat.

[0015] Furthermore, the self-locking drive assembly includes a handwheel, and the handwheel is arranged on the outside of the shell. One end of the handwheel is fixedly connected to a worm, and the worm passes through the shell and is rotatably connected thereto. The setting of the handwheel is conducive to manually driving the worm to rotate.

[0016] Furthermore, the outer surface of the worm is meshedly connected with a worm wheel, and the worm wheel is fixedly sleeved on the outer surface of the ring. The worm and the worm wheel have a self-locking function. When the worm does not rotate, the worm wheel cannot rotate under the action of external force.

[0017] Furthermore, the synchronous drive assembly includes a ring tooth, and the circular ring is fixedly sleeved on the outer surface of the ring tooth, the inner surface of the ring tooth is meshedly connected with a plurality of gears, and the gears are fixedly sleeved on the outer surface of the screw, which can synchronously drive the plurality of screws to rotate.

[0018] Beneficial effects of the utility model:

[0019] When the utility model is in use, the combined butterfly valve can replace the original bolt and flange connection structure by providing a positioning ring, a positioning seat, a gate valve, a shell, a circular ring, a self-locking drive component, a synchronous drive component, a screw, a movable ring, a movable seat and annular piston, so as to realize the rapid connection and disassembly of the butterfly valve body and the gate valve, reduce the time required for disassembly and assembly of the butterfly valve body, and thus reduce the impact on the working process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 : A three-dimensional diagram of the utility model;

[0022] Figure 2 : A partial cross-sectional view of the utility model;

[0023] Figure 3 :The utility model Figure 2 Enlarged view of point A in the middle.

[0024] Figure 4 :The utility model Figure 2 Enlarged view of point B in the middle.

[0025] The reference numerals are as follows:

[0026] 1. Butterfly valve body; 2. Gate valve; 3. Handwheel; 4. Housing; 5. Positioning ring body; 6. Movable seat; 7. Worm; 8. Positioning block; 9. Positioning groove; 10. Annular piston; 11. Sealing seat; 12. Sealing ring; 13. Worm gear; 14. Circular ring; 15. Ring gear; 16. Screw; 17. Gear; 18. Movable ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figures 1 to 4As shown, it relates to a combined butterfly valve, including a butterfly valve body 1, both ends of the butterfly valve body 1 are fixedly installed with positioning rings, the other ends of the two positioning rings are sealed and abutted with positioning seats, the two positioning rings each include a positioning ring body 5, and the positioning ring body 5 is fixedly connected to the butterfly valve body 1, a plurality of positioning grooves 9 are evenly opened on one side of the outer surface of the positioning ring body 5, the two positioning seats each include a sealing seat 11, a plurality of positioning blocks 8 are fixedly connected to the inner surface of the sealing seat 11, and the positioning blocks 8 match the positioning grooves 9, and two sealing rings 12 are fixedly connected to the inner surface of the sealing seat 11, and the two sealing rings 12 are abutted against the outer wall of the positioning ring body 5. When the butterfly valve body 1 is docked and installed, the positioning block 8 needs to be inserted into the positioning groove 9 to allow the positioning ring to be positioned and docked with the positioning seat, and the sealing ring 12 can ensure the sealing between the positioning ring body 5 and the sealing seat 11.

[0029] Both sides of the butterfly valve body 1 are provided with a gate valve 2, and one of the gate valves 2 is fixedly connected to the adjacent positioning seat, and the gate valve 2 can control the opening and closing of one side of the butterfly valve body 1.

[0030] The outer surface of the other gate valve 2 is fixedly sleeved with a shell 4, and the inner walls on both sides of the shell 4 are rotatably connected with a ring 14. A self-locking drive assembly is installed between the ring 14 and the shell 4. The self-locking drive assembly includes a handwheel 3, and the handwheel 3 is arranged on the outside of the shell 4. One end of the handwheel 3 is fixedly connected with a worm 7, and the worm 7 penetrates the shell 4 and is rotatably connected thereto. The outer surface of the worm 7 is meshingly connected with a worm wheel 13, and the worm wheel 13 is fixedly sleeved on the outer surface of the ring 14. By rotating the handwheel 3, the handwheel 3 can drive the worm 7 to rotate, the worm 7 drives the worm wheel 13 to rotate, and the worm wheel 13 drives the ring 14 to rotate.

[0031] A synchronous drive assembly is also installed between the ring 14 and the shell 4. The synchronous drive assembly includes a ring tooth 15, and the ring 14 is fixedly sleeved on the outer surface of the ring tooth 15. The inner surface of the ring tooth 15 is meshingly connected with a plurality of gears 17, and the gear 17 is fixedly sleeved on the outer surface of the screw 16. After the ring 14 rotates, the ring tooth 15 can synchronously drive the plurality of gears 17 to rotate.

[0032] A plurality of screws 16 are rotatably connected to the inner wall of one side of the shell 4, and the screws 16 are connected to the synchronous drive assembly, and a movable ring 18 is threadedly sleeved on the outer surfaces of the plurality of screws 16, and the movable ring 18 penetrates the shell 4 and is slidably connected thereto, and a movable seat 6 is fixedly connected to the other end of the movable ring 18, and the movable seat 6 is fixedly connected to an adjacent positioning seat, and an annular piston 10 is sealingly fitted on the inner surface of the movable seat 6, and the annular piston 10 can ensure the sealing of the connection between the movable seat 6 and the gate valve 2, and the annular piston 10 is fixedly sleeved on the outer surface of the gate valve 2, and the rotation of the plurality of screws 16 can drive the movable ring 18 and the movable seat 6 to move.

[0033] Working principle: During installation, place the butterfly valve body 1 between the two positioning seats, and then move it toward the fixed sealing seat 11 until the positioning block 8 is inserted into the positioning groove 9, and then turn the handwheel 3, the handwheel 3 drives the worm 7 to rotate, the worm 7 drives the ring 14 to rotate through the worm gear 13, the ring 14 drives the ring gear 15 to rotate, and when the ring gear 15 rotates, it drives multiple gears 17 to rotate synchronously, thereby driving multiple screws 16 to rotate, and the screw 16 drives the movable seat 6 and the sealing seat 11 connected thereto to move through the movable ring 18, so that the positioning block 8 is inserted into the positioning groove 9 until the two positioning ring bodies 5 are in contact with the adjacent sealing rings 12; during disassembly, turn the handwheel 3 in the opposite direction, the handwheel 3 drives the sealing seat 11 connected to the movable seat 6 to reset through various components, and then the butterfly valve body 1 can be taken out.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A combined butterfly valve, comprising a butterfly valve body (1), characterized in that: Both ends of the butterfly valve body (1) are fixedly mounted with positioning rings, and the other ends of the two positioning rings are sealed against positioning seats; Both sides of the butterfly valve body (1) are provided with a gate valve (2), and one of the gate valves (2) is fixedly connected to an adjacent positioning seat; The outer surface of the other gate valve (2) is fixedly sleeved with a housing (4), and the inner walls on both sides of the housing (4) are rotatably connected with a ring (14), and a self-locking drive component is installed between the ring (14) and the housing (4); A synchronous drive assembly is also installed between the ring (14) and the housing (4); A plurality of screw rods (16) are rotatably connected to the inner wall of one side of the shell (4), and the screw rods (16) are connected to a synchronous drive assembly. A movable ring (18) is threadedly sleeved on the outer surfaces of the plurality of screw rods (16), and the movable ring (18) penetrates the shell (4) and is slidably connected thereto. The other end of the movable ring (18) is fixedly connected to a movable seat (6), and the movable seat (6) is fixedly connected to an adjacent positioning seat. An annular piston (10) is sealingly fitted to the inner surface of the movable seat (6), and the annular piston (10) is fixedly sleeved on the outer surface of the gate valve (2).

2. A combined butterfly valve according to claim 1, characterized in that: The two positioning rings each comprise a positioning ring body (5), and the positioning ring body (5) is fixedly connected to the butterfly valve body (1), and a plurality of positioning grooves (9) are evenly arranged on one side of the outer surface of the positioning ring body (5).

3. A combined butterfly valve according to claim 2, characterized in that: The two positioning seats each comprise a sealing seat (11), and the sealing seat (11) is fixedly connected to an adjacent movable seat (6) and a gate valve (2); a plurality of positioning blocks (8) are fixedly connected to the inner surface of the sealing seat (11), and the positioning blocks (8) match the positioning grooves (9); and two sealing rings (12) are fixedly connected to the inner surface of the sealing seat (11).

4. A combined butterfly valve according to claim 3, characterized in that: The two sealing rings (12) are both in contact with the outer wall of the positioning ring body (5).

5. A combined butterfly valve according to claim 1, characterized in that: The self-locking drive assembly comprises a hand wheel (3), and the hand wheel (3) is arranged outside the housing (4), one end of the hand wheel (3) is fixedly connected to a worm (7), and the worm (7) passes through the housing (4) and is rotatably connected thereto.

6. A combined butterfly valve according to claim 5, characterized in that: The outer surface of the worm (7) is meshingly connected with a worm wheel (13), and the worm wheel (13) is fixedly sleeved on the outer surface of the ring (14).

7. A combined butterfly valve according to claim 1, characterized in that: The synchronous drive assembly comprises a ring gear (15), and the circular ring (14) is fixedly sleeved on the outer surface of the ring gear (15). The inner surface of the ring gear (15) is meshedly connected with a plurality of gears (17), and the gears (17) are fixedly sleeved on the outer surface of the screw (16).

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