Butterfly valve gear box locking mechanism

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve gear box locking mechanism which comprises a butterfly valve gear box body, a limiting clamping sleeve is arranged on one side of the front end of the butterfly valve gear box body, the inner side of the limiting clamping sleeve is rotationally connected with an operation rotating rod body, and the front end of the operation rotating rod body is fixedly connected with a center rotating disc. According to the butterfly valve gear box locking mechanism, through the arrangement of the locking insertion rod, the electric push rod, the center chuck, the locking switch and the limiting insertion base, the butterfly valve gear box locking mechanism can conveniently achieve locking of the end of an operation rod of a butterfly valve through an automatic locking structure after the butterfly valve is used; the butterfly valve is prevented from being mistakenly opened, different from a traditional mode that a lock is manually installed for locking and limiting, an automatic locking structure is arranged so that a follow-up operator can conveniently conduct rapid locking and convenient control operation on the whole butterfly valve, and meanwhile the whole locking operation can be more labor-saving and convenient.

Description

Technical Field

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

[0002] The butterfly valve is a common medium regulating valve, and the butterfly valve gearbox is the key part of the butterfly valve control. It controls the opening and closing of the butterfly valve through gear transmission, and can also adjust the flow rate. In order to prevent the butterfly valve from being opened by mistake when not in use, the butterfly valve generally needs to be locked and limited after use.

[0003] In the prior art, after the operation of the butterfly valve is completed, the lock needs to be manually screwed into the reserved threaded hole of the operating rod to lock the butterfly valve gear box. However, since the butterfly valve needs to be locked manually before and after each use, the locking work of the entire butterfly valve will be laborious and cumbersome after multiple operations, and it is not conducive to the operator to easily adjust the entire butterfly valve. Therefore, a butterfly valve gear box locking mechanism is proposed to address the above problems. Utility Model Content

[0004] The utility model aims to provide a butterfly valve gearbox locking mechanism to solve the problem of laborious and limited locking operation when locking a butterfly valve in the prior art mentioned in the background art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A butterfly valve gearbox locking mechanism comprises a butterfly valve gearbox body, a limiting sleeve is provided at a front end side position of the butterfly valve gearbox body, and the inner side of the limiting sleeve is rotatably connected to an operating lever body, the outside of the operating lever body is fixedly connected to a center turntable, a center chuck is provided at the front end middle position of the center turntable, and locking plug rods are respectively fixedly connected to the rear end two sides of the center chuck, the outside of the limiting sleeve is fixedly connected to a limiting socket, a locking switch is movably installed on the outer surface of the operating lever body, and an electric push rod is provided at the front end middle position of the operating lever body.

[0007] Preferably, the bottom end of the butterfly valve gearbox body is fixedly connected with a sleeve, and the bottom end of the sleeve is fixedly connected with a butterfly valve body, and the outer shape of the butterfly valve body is a disc-shaped structure.

[0008] Preferably, a connecting handle is provided on the outside of the central turntable, the connecting handle and the central turntable are connected via a short connecting rod, and the center point of the connecting handle and the center point of the central turntable are arranged to coincide with each other.

[0009] Preferably, the limiting sockets are arranged in a ring array structure along the center point of the limiting sleeve, and the front end surface of the limiting socket is provided with a round hole groove which is plug-connected with the locking rod.

[0010] Preferably, a conical retaining ring is fixedly connected to the front end of the center turntable, and a sliding connection is arranged between the center turntable and the locking rod, the fixed end of the electric push rod is arranged on the inner side of the operating turntable body, and the movable end of the electric push rod is fixedly connected to one end of the center chuck, and the size of the groove opened at the front end of the conical retaining ring is larger than the size of the center chuck.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, by providing a locking rod, an electric push rod, a center chuck, a locking switch and a limiting socket, the butterfly valve gear box locking mechanism can be conveniently used to lock the end of the butterfly valve operating rod after the butterfly valve is used, using an automatic locking structure composed of the locking rod, the electric push rod, the center chuck, the locking switch and the limiting socket to prevent the butterfly valve from being accidentally started. Different from the previous manually installed lock for locking and limiting, the setting of the automatic locking structure will facilitate the subsequent operator to quickly lock and conveniently operate the entire butterfly valve. At the same time, the entire locking operation will be more labor-saving and convenient, thereby solving the technical problems raised in the background technology of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the installation structure of the operating lever body of the utility model;

[0015] Figure 3 This is a schematic diagram of the locking rod structure of the utility model.

[0016] In the figure: 1. Butterfly valve gearbox body; 2. Limiting sleeve; 3. Operating lever body; 4. Center turntable; 5. Connecting handle; 6. Sleeve; 7. Locking rod; 8. Electric push rod; 9. Center chuck; 10. Locking switch; 11. Limiting socket; 12. Conical clamping ring; 13. Butterfly valve body. DETAILED DESCRIPTION

[0017] 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 in 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.

[0018] See also Figure 1-3 , the utility model provides a technical solution:

[0019] A butterfly valve gearbox locking mechanism comprises a butterfly valve gearbox body 1, a limiting sleeve 2 is provided at one side position of the front end of the butterfly valve gearbox body 1, and an operating lever body 3 is rotatably connected to the inner side of the limiting sleeve 2, a center turntable 4 is fixedly connected to the outside of the operating lever body 3, a center chuck 9 is provided at the middle position of the front end of the center turntable 4, and locking rods 7 are fixedly connected to the two sides of the rear end of the center chuck 9, respectively, a limiting socket 11 is fixedly connected to the outside of the limiting sleeve 2, a locking switch 10 is movably installed on the outer surface of the operating lever body 3, and an electric push rod 8 is provided at the middle position of the front end of the operating lever body 3.

[0020] like Figure 1 As shown, the bottom end of the butterfly valve gearbox body 1 is fixedly connected with a sleeve 6, and the bottom end of the sleeve 6 is fixedly connected with a butterfly valve body 13. The outer shape of the butterfly valve body 13 is a disc-shaped structure. When assembling the entire butterfly valve structure, the outer shape of the butterfly valve body 13 is a disc-shaped structure that can be adapted and installed with a disc-shaped valve plate; a connecting handle 5 is provided on the outside of the center turntable 4, and the connecting handle 5 and the center turntable 4 are connected by a short connecting rod. The center point of the connecting handle 5 and the center point of the center turntable 4 are arranged to coincide with each other. After releasing the locking operation of the operating turn rod body 3, the connecting handle 5 can be tightly grasped to pull the manual control structure composed of the operating turn rod body 3, the center turntable 4 and the connecting handle 5 to rotate, so that the entire butterfly valve can be flow-regulated.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, the limiting socket 11 is arranged in a circular array structure along the center point of the limiting sleeve 2, and the front end face of the limiting socket 11 is provided with a circular hole groove which is plugged into the locking rod 7. After the use operation is completed and the locking rod 7 realizes the reset movement operation, a group of locking rods 7 that have moved into place will fit into the corresponding group of limiting sleeves 2, thereby quickly locking the operating turntable; the front end of the center turntable 4 is fixedly connected with a conical retaining ring 12, and the center turntable 4 and the locking rod 7 are slidingly connected. The fixed end of the electric push rod 8 is arranged on the inner side of the operating turntable body 3, and the movable end of the electric push rod 8 is fixedly connected to one end of the center chuck 9. The size of the groove opened at the front end of the conical retaining ring 12 is larger than the size of the center chuck 9. When the electric push rod 8 pushes the center chuck 9 forward and outward, the conical retaining ring 12 will play a certain shielding and protective role from the outside of the center chuck 9.

[0022] Working process: The electric energy required for the start-up and operation of the flow control component in the utility model comes from an external power supply, and before the entire butterfly valve is used, the fluid inlet and outlet pipelines can be quickly connected through the flanges reserved on both sides of the butterfly valve gear box body 1. When using the butterfly valve for flow control operation, first press the locking switch 10 downward to start the electric push rod 8, so that the electric push rod 8 is pushed forward with a group of locking plug rods 7 through the center chuck 9, so that the locking plug rod 7 is separated from the limiting socket 11 and the lock on the operating lever body 3 is removed, so that the operator can use the operating lever body 3 according to the use requirements. The manual control structure composed of the rod body 3, the center turntable 4 and the connecting handle 5 drives the worm gear assembly inside the gear box and the valve plate provided inside the butterfly valve body 13 to achieve relative rotation, so as to achieve the purpose of quickly adjusting the butterfly valve. After completing the operation of the butterfly valve, the locking switch 10 can be pressed again to start the electric push rod 8, so that it can be reset and moved with a group of locking plugs 7 through the center chuck 9, until a group of locking plugs 7 can be fit and inserted into the corresponding group of limited sockets 11, thereby locking the operating turn rod body 3 to prevent the butterfly valve from being accidentally started when not in use.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve gearbox locking mechanism, comprising a butterfly valve gearbox body (1), characterized in that: A limiting sleeve (2) is provided at one side position of the front end of the butterfly valve gearbox body (1), and the inner side of the limiting sleeve (2) is rotatably connected to an operating lever body (3), the outside of the operating lever body (3) is fixedly connected to a center turntable (4), a center chuck (9) is provided at the middle position of the front end of the center turntable (4), and locking plug rods (7) are fixedly connected at both sides of the rear end of the center chuck (9), the outside of the limiting sleeve (2) is fixedly connected to a limiting socket (11), a locking switch (10) is movably installed on the outer surface of the operating lever body (3), and an electric push rod (8) is provided at the middle position of the front end of the operating lever body (3).

2. A butterfly valve gearbox locking mechanism according to claim 1, characterized in that: The bottom end of the butterfly valve gearbox body (1) is fixedly connected to a sleeve (6), and the bottom end of the sleeve (6) is fixedly connected to a butterfly valve body (13), and the butterfly valve body (13) has a disc-shaped structure.

3. The butterfly valve gearbox locking mechanism according to claim 1, characterized in that: A connecting handle (5) is provided on the outside of the central rotating disk (4), the connecting handle (5) and the central rotating disk (4) are connected via a short connecting rod, and the center point of the connecting handle (5) and the center point of the central rotating disk (4) are arranged to coincide with each other.

4. A butterfly valve gearbox locking mechanism according to claim 1, characterized in that: The limiting sockets (11) are arranged in a ring array structure along the center point of the limiting sleeve (2), and a circular hole groove for plugging and connecting with the locking plug rod (7) is provided on the front end surface of the limiting sockets (11).

5. The butterfly valve gearbox locking mechanism according to claim 1, characterized in that: The front end of the center turntable (4) is fixedly connected with a conical snap ring (12), and the center turntable (4) and the locking plug rod (7) are slidably connected. The fixed end of the electric push rod (8) is arranged on the inner side of the operating turntable body (3), and the movable end of the electric push rod (8) is fixedly connected to one end of the center chuck (9). The size of the slot opened at the front end of the conical snap ring (12) is larger than the size of the center chuck (9).

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