Butterfly-shaped loose joint ball valve

Abstract

The utility model relates to the technical field of ball valves, in particular to a butterfly loose joint ball valve which comprises a ball valve body, a valve rod and a butterfly handle. The ball valve further comprises a limiting assembly arranged between the ball valve body and the butterfly handle, and the limiting assembly is used for limiting the butterfly handle. A sealing assembly is arranged between the valve rod and the butterfly handle, the sealing assembly is used for sealing the ball valve body, the sealing assembly comprises a sealing ring, and the sealing ring is arranged at the top of the ball valve body. According to the butterfly loose joint ball valve, the limiting assembly is arranged between the ball valve body and the butterfly handle, the butterfly handle can be limited by moving the limiting rod on the limiting assembly, and the stability of the ball valve body is improved; meanwhile, the sealing assembly is arranged between the valve rod and the butterfly handle, the butterfly handle can be detached by rotating the fixing cap, the abraded sealing ring can be rapidly replaced, and the replacement efficiency of the sealing ring and the sealing performance of the ball valve body are improved.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically a butterfly-shaped swivel ball valve. Background Technology

[0002] The butterfly valve is a composite valve that combines the operating structure of a butterfly valve with the functional characteristics of a ball valve. It mainly adopts a 90° rotating handle or actuator similar to that of a butterfly valve, and achieves opening and closing control by rotating the valve stem. It is suitable for node valves in water supply and heating systems that require frequent maintenance.

[0003] Currently, the main approach is to first connect and install the butterfly valve at the pipe connection point, and then turn the butterfly handle 90 degrees to open and close the valve.

[0004] However, after prolonged use, the lubrication and seals at the connection between the valve stem and the butterfly handle of the butterfly valve will gradually wear and age, resulting in a decrease in the butterfly handle's rotation torque threshold. At this time, the butterfly handle is easily affected by external impacts or accidental contact by personnel, causing accidental rotation, which leads to changes in the valve opening and the flow rate in the pipeline. Utility Model Content

[0005] The purpose of this utility model is to provide a butterfly-shaped ball valve to solve the problem mentioned in the background art that after long-term use, the lubrication and sealing of the valve stem and butterfly handle connection will gradually wear and age, resulting in a decrease in the butterfly handle rotation torque threshold. At this time, the butterfly handle is easily affected by external force or accidental contact by personnel, resulting in accidental rotation, causing changes in valve opening and pipeline flow.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a butterfly-shaped ball valve, comprising a ball valve body and a valve stem and a butterfly handle disposed on the ball valve body; and further comprising;

[0007] A limiting component is disposed between the ball valve body and the butterfly handle, the limiting component is used to limit the butterfly handle, the limiting component includes a limiting rod disposed on the outside of the ball valve body, the limiting rod being inserted into the bottom of the butterfly handle;

[0008] A sealing assembly is disposed between the valve stem and the butterfly handle, and is used to seal the ball valve body. The sealing assembly includes a sealing ring disposed on the top of the ball valve body, the sealing ring being sleeved on the outer wall of the valve stem, the butterfly handle being sleeved on the outer wall of the valve stem, and a fixing cap being threaded to the top of the valve stem.

[0009] Preferably, the limiting component further includes a connector, which is fixedly connected to the side wall of the ball valve body, the limiting rod passes through the upper and lower sides of the connector, and a lever is fixedly connected to the bottom of the connector.

[0010] Preferably, a limiting hole is provided at the bottom of the butterfly handle, and the limiting rod is inserted into the limiting hole.

[0011] Preferably, a limiting plate is fixedly connected to the outer peripheral wall of the limiting rod, and the limiting plate is slidably connected inside the connector.

[0012] Preferably, a reset spring is fixedly connected to the top of the limiting plate, and the reset spring is fixedly installed inside the connector.

[0013] Preferably, the sealing assembly further includes a bushing, which is fixedly connected to the outer wall of the valve stem and abuts against the inner wall of the sealing ring.

[0014] Preferably, the outer wall of the valve stem is fixedly connected to multiple sets of positioning rods, and the top of the butterfly handle is provided with multiple sets of positioning holes, with the positioning rods inserted into the interior of the positioning holes.

[0015] Preferably, the top of the butterfly handle and the bottom of the fixing cap are both fixedly connected with flexible pads, and the two sets of flexible pads abut against each other.

[0016] Compared with the prior art, the beneficial effects of this utility model are: by setting a limiting component between the ball valve body and the butterfly handle, and by moving the limiting rod on the limiting component upward so that it is inserted into the butterfly handle, the butterfly handle can be limited, thereby improving the stability of the ball valve body;

[0017] Meanwhile, by setting a sealing assembly between the valve stem and the butterfly handle, the butterfly handle can be removed by rotating the fixing cap, allowing for quick replacement of worn sealing rings, thus improving the replacement efficiency of sealing rings and the sealing performance of the ball valve body. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the ball valve body of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the valve stem of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the component defined in this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the butterfly handle of this utility model;

[0022] Figure 5 This is a schematic diagram of the unfolded structure of the sealing assembly of this utility model.

[0023] In the diagram: 1. Ball valve body; 2. Valve stem; 3. Butterfly handle; 4. Limiting assembly; 401. Connector; 402. Limiting rod; 4021. Limiting hole; 403. Toggle block; 404. Limiting plate; 405. Return spring; 5. Sealing assembly; 501. Positioning rod; 5011. Positioning hole; 502. Fixing cap; 503. Bushing; 504. Sealing ring; 505. Flexible gasket. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] like Figure 1 - Figure 5 As shown, this application provides a butterfly valve, including a ball valve body 1 and a valve stem 2 and a butterfly handle 3 disposed on the ball valve body 1; and further including;

[0027] Specifically, such as Figure 2 As shown, a limiting component 4 is provided between the ball valve body 1 and the butterfly handle 3. The limiting component 4 is used to limit the butterfly handle 3. The limiting component 4 includes a limiting rod 402, which is located on the outside of the ball valve body 1 and inserted into the bottom of the butterfly handle 3. By providing the limiting component 4 between the ball valve body 1 and the butterfly handle 3, and by moving the limiting rod 402 on the limiting component 4 upward so that it is inserted into the butterfly handle 3, the butterfly handle 3 can be limited, thereby improving the stability of the ball valve body 1 and preventing the ball valve body 1 from opening or closing due to accidental contact with the butterfly handle 3.

[0028] A connector 401 is fixedly connected to the side wall of the ball valve body 1. A limiting rod 402 passes through the upper and lower sides of the connector 401. A limiting hole 4021 is opened at the bottom of the butterfly handle 3. The limiting rod 402 is inserted into the limiting hole 4021. A lever 403 is fixedly connected to the bottom of the connector 401. By pulling the lever 403, the limiting rod 402 can be moved downward until the top of the limiting rod 402 retracts into the inner wall of the connector 401. Then, the butterfly handle 3 can be rotated to open and close the ball valve body 1.

[0029] Specifically, such as Figure 3As shown, a limiting plate 404 is fixedly connected to the outer peripheral wall of the limiting rod 402. The limiting plate 404 is slidably connected inside the connector 401. A return spring 405 is fixedly connected to the top of the limiting plate 404. The return spring 405 is fixedly installed inside the connector 401. After the lever 403 is released, the limiting rod 402 can be reset upward by the pulling force of the return spring 405. At this time, the limiting rod 402 will be inserted into the limiting hole 4021 on the butterfly handle 3 to limit the butterfly handle 3.

[0030] Specifically, such as Figure 5 As shown, a sealing assembly 5 is provided between the valve stem 2 and the butterfly handle 3. The sealing assembly 5 is used to seal the ball valve body 1. The sealing assembly 5 includes a sealing ring 504, which is located on the top of the ball valve body 1. The sealing ring 504 is sleeved on the outer wall of the valve stem 2, and the butterfly handle 3 is sleeved on the outer wall of the valve stem 2. A fixing cap 502 is threadedly connected to the top of the valve stem 2. Flexible pads 505 are fixedly connected to the top of the butterfly handle 3 and the bottom of the fixing cap 502. The two sets of flexible pads 505 abut against each other. By providing the sealing assembly 5 between the valve stem 2 and the butterfly handle 3, the butterfly handle 3 can be removed by rotating the fixing cap 502, and the worn sealing ring 504 can be quickly replaced, which improves the replacement efficiency of the sealing ring 504 and the sealing performance of the ball valve body 1.

[0031] A bushing 503 is fixedly connected to the outer wall of the valve stem 2. The bushing 503 abuts against the inner wall of the sealing ring 504, which further improves the sealing performance of the valve stem 2 and the ball valve body 1.

[0032] The outer wall of the valve stem 2 is fixedly connected with multiple sets of positioning rods 501, and the top of the butterfly handle 3 is provided with multiple sets of positioning holes 5011. The positioning rods 501 are inserted into the interior of the positioning holes 5011. By fitting the butterfly handle 3 onto the outer wall of the positioning rods 501, the stability of the valve stem 2 and the butterfly handle 3 during assembly is improved.

[0033] Specifically, the solution is as follows: First, by pulling the lever 403, the limiting rod 402 can be moved downward until the top of the limiting rod 402 retracts into the connector 401. At this time, the butterfly handle 3 can be rotated 90 degrees to open and close the ball valve body 1. Then, by releasing the lever 403, the limiting rod 402 can be returned to its original position by the pulling force of the return spring 405. At this time, the limiting rod 402 will be inserted into the limiting hole 4021 on the butterfly handle 3 for limitation.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0035] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A butterfly ball valve, comprising a ball valve body (1) and a valve stem (2) and a butterfly handle (3) arranged on the ball valve body (1); characterized in that, Also include; The limiting assembly (4) is arranged between the ball valve body (1) and the handle (3), and is used for limiting the handle (3). The limiting assembly (4) comprises a limiting rod (402) arranged outside the ball valve body (1), and the limiting rod (402) is inserted into the bottom of the handle (3); The sealing assembly (5) is arranged between the valve rod (2) and the handle (3), and is used for sealing the ball valve body (1). The sealing assembly (5) comprises a sealing ring (504) arranged at the top of the ball valve body (1), the sealing ring (504) is sleeved on the outer wall of the valve rod (2), the handle (3) is sleeved on the outer wall of the valve rod (2), and the top of the valve rod (2) is screwed with a fixed cap (502).

2. A butterfly ball valve according to claim 1, wherein The limiting assembly (4) further comprises a connecting piece (401) fixedly connected to the side wall of the ball valve body (1), the limiting rod (402) penetrates the upper and lower sides of the connecting piece (401), and the bottom of the connecting piece (401) is fixedly connected with a push block (403).

3. A butterfly ball valve according to claim 2, wherein The bottom of the handle (3) is provided with a limiting hole (4021), and the limiting rod (402) is inserted into the limiting hole (4021).

4. A butterfly ball valve according to claim 3, wherein The outer peripheral wall of the limiting rod (402) is fixedly connected with a limiting plate (404) which is slidingly connected in the connecting piece (401).

5. A butterfly ball valve according to claim 4, wherein The top of the limiting plate (404) is fixedly connected with a return spring (405) which is fixedly installed in the connecting piece (401).

6. A butterfly ball valve according to claim 1, wherein The sealing assembly (5) further comprises a bushing (503) fixedly connected to the outer wall of the valve rod (2), and the bushing (503) abuts against the inner wall of the sealing ring (504).

7. A butterfly ball valve according to claim 6, wherein The outer wall of the valve rod (2) is fixedly connected with a plurality of positioning rods (501), the top of the handle (3) is provided with a plurality of positioning holes (5011), and the positioning rods (501) are inserted into the positioning holes (5011).

8. A butterfly ball valve according to claim 7, wherein The top of the handle (3) and the bottom of the fixed cap (502) are fixedly connected with two groups of flexible pads (505), and the two groups of flexible pads (505) abut against each other.

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