Butterfly valve capable of preventing deviation of sealing rubber ring

Abstract

The utility model discloses a butterfly valve capable of preventing a sealing rubber ring from deviating, which relates to the technical field of butterfly valves and comprises a valve body, a valve seat is fixedly connected above the valve body, an adjusting rod is in threaded connection above the valve seat, a handle is fixedly connected above the adjusting rod, a valve plate is fixedly connected at one end of the adjusting rod far away from the handle, and a sealing rubber ring is arranged on the valve plate. A mounting groove is formed in the outer side face of the valve plate, a limiting device is arranged on the inner wall of the mounting groove, a sealing ring is arranged on the inner wall of the mounting groove, and limiting grooves are formed in the end faces of the two sides of the sealing ring. According to the butterfly valve, the valve plate, the mounting groove, the limiting device, the sealing ring and the limiting groove are arranged, the sealing ring can be conveniently mounted in the mounting groove in the valve plate, meanwhile, the sealing ring is fixed through the limiting device, and therefore the problem that the sealing ring may deviate in the using process is effectively solved, and the sealing performance and reliability of the butterfly valve are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve capable of preventing a sealing rubber ring from deflecting. Background Art

[0002] Butterfly valve, also called flap valve, is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. Butterfly valve refers to a valve whose closing part (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays the role of cutting off and throttling in pipelines.

[0003] The butterfly valve opening and closing part is a disc-shaped valve plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. A sealing rubber ring is required when installing the butterfly valve. The valve plate will drive the sealing ring to rotate when it moves. The sealing rubber ring may deviate and slide under the drive of the valve plate, causing the sealing rubber ring to deviate under the torque force of the valve plate, etc., which greatly reduces the subsequent sealing performance and brings great inconvenience to the user. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a butterfly valve that prevents the sealing rubber ring from shifting. By providing a valve plate, a mounting groove, a limit device, a sealing ring and a limit groove, the sealing ring is easily installed inside the mounting groove on the valve plate. At the same time, the sealing ring is fixed by the limit device, thereby effectively solving the problem of possible shifting of the sealing ring during use and improving the sealing performance and reliability of the butterfly valve.

[0005] The utility model also provides a butterfly valve with the above-mentioned anti-seal rubber ring offset, comprising: a valve body, a valve seat fixedly connected to the top of the valve body, an adjusting rod threadedly connected to the top of the valve seat, a handle fixedly connected to the top of the adjusting rod, a valve plate fixedly connected to the end of the adjusting rod away from the handle, a mounting groove provided on the outer side of the valve plate, a limiting device provided on the inner wall of the mounting groove, a sealing ring provided on the inner wall of the mounting groove, and limiting grooves provided on both side end faces of the sealing ring. By providing the valve plate, the mounting groove, the limiting device, the sealing ring and the limiting groove, it is convenient to install the sealing ring inside the mounting groove on the valve plate, and the sealing ring is fixed by the limiting device, thereby effectively solving the offset problem of the sealing ring that may occur during use, and improving the sealing performance and reliability of the butterfly valve.

[0006] According to the butterfly valve for preventing the sealing rubber ring from deflecting, the limiting device includes telescopic chambers arranged on both sides of the inner wall of the installation groove, the inner wall of the telescopic chamber is slidably connected to a limiting block, one end of the limiting block located inside the telescopic chamber is fixedly connected to a return spring, and one end of the return spring away from the limiting block is fixedly connected to the inner bottom wall of the telescopic chamber. The limiting block is driven by the return spring to limit the two sides of the sealing ring.

[0007] According to the butterfly valve for preventing the sealing rubber ring from deflecting, the limit block is adapted to the inner wall of the limit groove, and the limit block is slidably connected to the limit groove, so that the sealing ring can be limited in the installation groove by the limit block and the limit groove.

[0008] According to the butterfly valve for preventing the sealing rubber ring from shifting, the outer side of the valve plate and the two sides of the mounting groove are provided with fixing grooves, a fixing plate is provided above the fixing groove, and the two sides above the fixing plate are threadedly connected with limiting bolts, and the limiting bolts penetrate the fixing plate and are threadedly connected to the bottom wall of the fixing groove. The fixing plate is conveniently fixed to the valve plate by the limiting bolts.

[0009] According to the butterfly valve for preventing the sealing rubber ring from deflecting, the outer side of the sealing ring is provided with a connecting groove, and the connecting groove is adapted to the fixing groove, and the connecting groove is movably connected to the fixing plate. The fixing plate is convenient for limiting the outer side of the sealing ring, thereby further improving the stability of the sealing ring and preventing the sealing ring from deflecting.

[0010] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0012] Figure 1 This is a schematic diagram of the valve body structure of a butterfly valve for preventing the sealing rubber ring from deflecting according to the utility model;

[0013] Figure 2 This is a schematic diagram of the valve plate and sealing ring structure of a butterfly valve for preventing the sealing rubber ring from deflecting according to the utility model;

[0014] Figure 3 The utility model is a front view structural diagram of a valve plate and a sealing ring of a butterfly valve for preventing the sealing rubber ring from deflecting.

[0015] Legend:

[0016] 1. Valve body; 2. Valve seat; 3. Adjusting rod; 4. Handle; 5. Valve plate; 6. Mounting groove; 7. Limit device; 8. Sealing ring; 9. Limit groove; 701. Telescopic cavity; 702. Limit block; 703. Return spring; 501. Fixed groove; 502. Fixed plate; 503. Limit bolt; 801. Connecting groove. DETAILED DESCRIPTION

[0017] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0018] Reference Figure 1-3 The utility model embodiment is a butterfly valve for preventing the deviation of the sealing rubber ring, which includes: a valve body 1, a valve seat 2 is fixedly connected to the top of the valve body 1, an adjusting rod 3 is threadedly connected to the top of the valve seat 2, a handle 4 is fixedly connected to the top of the adjusting rod 3, and a valve plate 5 is fixedly connected to the end of the adjusting rod 3 away from the handle 4. The valve plate 5 at one end of the adjusting rod 3 is driven to rotate by rotating the handle 4. The outer side surface of the valve plate 5 is provided with a mounting groove 6, and the mounting groove 6 is convenient for limiting the sealing ring 8. A limiting device 7 is provided on the inner wall of the mounting groove 6, and a sealing ring 8 is provided on the inner wall of the mounting groove 6. Limiting grooves 9 are provided on the end faces of the sealing ring 8 on both sides.

[0019] The limiting device 7 includes a telescopic cavity 701 disposed on both sides of the inner wall of the installation groove 6, the inner wall of the telescopic cavity 701 is slidably connected to a limiting block 702, one end of the limiting block 702 located inside the telescopic cavity 701 is fixedly connected to a return spring 703, and one end of the return spring 703 away from the limiting block 702 is fixedly connected to the inner bottom wall of the telescopic cavity 701. The limiting block 702 is slidably connected to the limiting groove 9, so that the sealing ring 8 is conveniently fixed in the installation groove 6.

[0020] The outer side of the valve plate 5 and the two sides of the mounting groove 6 are provided with a fixing groove 501, and a fixing plate 502 is provided above the fixing groove 501, and the upper end surface of the fixing plate 502 is adapted to the outer side wall of the valve plate 5, and the two sides above the fixing plate 502 are threadedly connected with limiting bolts 503, and the limiting bolts 503 penetrate the fixing plate 502 and are threadedly connected to the inner bottom wall of the fixing groove 501. The fixing plate 502 is used to limit the outer side wall of the sealing ring 8.

[0021] Working principle: When used for the first time, the sealing ring 8 is conveniently limited on the valve plate 5 through the installation groove 6. At the same time, the limit blocks 702 on both sides of the inner wall of the installation groove 6 shrink to the inner wall of the telescopic cavity 701 under the extrusion of the sealing ring 8. When the sealing ring 8 completely enters the installation groove 6, the limit blocks 702 pop out of the telescopic cavity 701 under the action of the reset spring 703 and are slidably connected with the limit groove 9, thereby limiting the two sides of the sealing ring 8. The fixing plate 502 can be covered on the inside of the connecting groove 801 on the outer side of the sealing ring 8, and then the fixing plate 502 can be fixed to the fixing groove 501 by the limiting bolt 503, which is convenient for limiting the outer side of the sealing ring 8 to avoid the problem of poor sealing effect caused by the displacement of the sealing ring 8 when the valve plate 5 rotates.

[0022] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A butterfly valve for preventing a sealing rubber ring from deflecting, comprising: The valve body (1) is characterized in that a valve seat (2) is fixedly connected to the top of the valve body (1), an adjusting rod (3) is threadedly connected to the top of the valve seat (2), a handle (4) is fixedly connected to the top of the adjusting rod (3), an end of the adjusting rod (3) away from the handle (4) is fixedly connected to a valve plate (5), an outer side surface of the valve plate (5) is provided with a mounting groove (6), an inner wall of the mounting groove (6) is provided with a limiting device (7), an inner wall of the mounting groove (6) is provided with a sealing ring (8), and both side end surfaces of the sealing ring (8) are provided with limiting grooves (9).

2. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: The limiting device (7) comprises a telescopic cavity (701) arranged on both sides of the inner wall of the installation groove (6); the inner wall of the telescopic cavity (701) is slidably connected to a limiting block (702); one end of the limiting block (702) located inside the telescopic cavity (701) is fixedly connected to a return spring (703); and one end of the return spring (703) away from the limiting block (702) is fixedly connected to the inner bottom wall of the telescopic cavity (701).

3. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 2, characterized in that: The limiting block (702) is adapted to fit the inner wall of the limiting groove (9), and the limiting block (702) is slidably connected to the limiting groove (9).

4. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: A fixing groove (501) is provided on the outer side surface of the valve plate (5) and on both sides of the mounting groove (6); a fixing plate (502) is provided above the fixing groove (501); limiting bolts (503) are threadedly connected on both sides above the fixing plate (502); and the limiting bolts (503) penetrate the fixing plate (502) and are threadedly connected to the inner bottom wall of the fixing groove (501).

5. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: The outer side surface of the sealing ring (8) is provided with a connecting groove (801), and the connecting groove (801) is matched with the fixing groove (501), and the connecting groove (801) is movably connected with the fixing plate (502).

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