Butterfly valve with self-locking structure

Abstract

The butterfly valve with the self-locking structure comprises a valve body, connecting flanges are arranged on the two sides of the valve body, a control box is arranged at the top end of the valve body and connected with the valve body through a fixing frame, a first rotating shaft is arranged at the bottom end of the control box, the bottom end of the first rotating shaft extends into the valve body to be connected with a valve plate, and a second rotating shaft is arranged at the bottom end of the valve plate. The top end of the first rotating shaft extends into the control box to be connected with a worm gear, a second rotating shaft is arranged in the control box and located on one side of the worm gear, and the outer wall of the second rotating shaft is sleeved with a worm matched with the worm gear. The anti-rotation butterfly valve has the beneficial effects that by arranging the anti-rotation assembly, when the rotating wheel is not used, the rotating wheel can be locked and limited, the situation that the valve body is opened or closed due to rotation of the rotating wheel caused by external accidental touch is prevented, and the safety of the butterfly valve is improved; and meanwhile, the anti-rotation assembly limits the rotating wheel through cooperation of the elastic assembly, the inner gear ring and the limiting gear, using is easy, and limiting is stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a butterfly valve with self -locking structure. BACKGROUND

[0002] The butterfly valve is also called flap valve, it is a simple structure regulating valve, can be used for low pressure pipeline medium switch control butterfly valve is to refer to the closing piece (valve lobe or butterfly plate) for disc, rotates around the valve shaft to reach the opening and closing of a kind of valve. The valve can be used to control air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive medium and so on various types fluid flow. On pipeline, mainly play the role of cut-off and throttling. The butterfly valve opening and closing element is a disc-shaped butterfly plate, rotates in the valve body around its own axis, to achieve the purpose of opening and closing or adjusting.

[0003] The existing butterfly valve mostly needs manual rotation of runner to drive the valve plate in valve body to rotate and adjust, since runner is located outside the valve body, lacks locking structure, is easy to be bumped by outside world to cause runner rotation, safety is poor.

[0004] For the problems in the related art, no effective solution has been proposed so far. UTILITY MODEL CONTENTS

[0005] For the problems in the related art, the utility model provides a butterfly valve with self-locking structure to overcome the above technical problems existing in the prior art.

[0006] Therefore, the utility model adopts the specific technical scheme as follows:

[0007] A butterfly valve with self-locking structure, including valve body, the both sides of valve body are equipped with connecting flange, the top of valve body is equipped with control box, the control box is connected with valve body through fixing frame, the bottom of control box is equipped with rotating shaft one, the bottom of rotating shaft one extends into valve body and is connected with valve plate, the top of rotating shaft one extends into control box and is connected with worm gear, the control box and located on one side of worm gear is equipped with rotating shaft two, the outer wall of rotating shaft two is equipped with worm that is matched with worm gear, one side of rotating shaft two extends to outside of control box and is connected with runner, one side of control box is equipped with anti-rotation assembly that is matched with rotating shaft two.

[0008] Preferably, the connection between the valve body and the rotating shaft one is provided with a sealing sleeve.

[0009] Preferably, the runner is fixedly connected with the rotating shaft two, and the outer wall of the runner is sleeved with an anti-skid rubber sleeve.

[0010] Preferably, the anti-rotation assembly comprises an inner gear ring arranged on one side of the control box, and the inner gear ring is connected with the control box through an elastic assembly, and a limiting gear matched with the inner gear ring is arranged on the outer wall of the rotating shaft two.

[0011] Preferably, the elastic assembly comprises symmetrically arranged mounting sleeves arranged on the control box and located on both sides of the rotating shaft two, and a sliding block matched with the mounting sleeve is arranged in the mounting sleeve, the sliding block is connected with the mounting sleeve through a spring, a pressing rod is arranged on the side of the sliding block away from the spring, and the pressing rod is connected with the inner gear ring outside the mounting sleeve.

[0012] Preferably, a mounting ring is rotatably connected to the outer wall of the pressing rod in the mounting sleeve, a limiting block extending out of the mounting sleeve is arranged on the outer wall of the mounting ring, and an L-shaped stroke hole matched with the limiting block is arranged on the outer wall of the mounting sleeve.

[0013] The butterfly valve has the advantages that: the anti-rotation assembly is arranged, the rotating wheel can be locked and positioned when not in use, the rotating wheel is prevented from rotating due to external accidental contact, the opening or closing of the valve body is prevented, the safety of the butterfly valve is improved, the anti-rotation assembly is matched with the rotating wheel through the elastic assembly, the inner gear ring and the limiting gear, the positioning is simple and stable. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below only show some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0015] Figure 1 It is a whole structure schematic view of a butterfly valve with a self-locking structure according to an embodiment of the present application.

[0016] Figure 2 It is a front view of a butterfly valve with a self-locking structure according to an embodiment of the present application.

[0017] Figure 3 It is a cross-sectional view of a control box in a butterfly valve with a self-locking structure according to an embodiment of the present application.

[0018] Figure 4 It is Figure 3 a local enlarged schematic view of position A in the figure.

[0019] In the figure:

[0020] 1, valve body; 2, connecting flange; 3, control box; 4, fixing frame; 5, rotating shaft one; 6, valve plate; 7, worm gear; 8, rotating shaft two; 9, worm; 10, rotating wheel; 11, inner tooth ring; 12, limiting gear; 13, mounting sleeve; 14, sliding block; 15, spring; 16, pressing rod; 17, mounting ring; 18, limiting block; 19, L-shaped stroke hole. DETAILED DESCRIPTION

[0021] To further illustrate the embodiments, the utility model provides the drawings, these drawings are part of the utility model disclosure, it mainly used to illustrate the embodiment, and can cooperate with the relevant description of the specification to explain the operation principle of the embodiment, cooperate with reference to these contents, the person skilled in the art should be able to understand other possible implementation ways and the advantages of the utility model, the components in the drawing are not drawn according to scale, and similar component symbols are usually used to represent similar components.

[0022] According to the embodiment of the utility model, a butterfly valve with self-locking structure is provided.

[0023] Embodiment one;

[0024] As Figures 1-4 shown, according to the butterfly valve with self-locking structure of the utility model embodiment, including valve body 1, the both sides of valve body 1 are equipped with connecting flange 2, the top of valve body 1 is equipped with control box 3, control box 3 is connected with valve body 1 by fixing frame 4, the bottom of control box 3 is equipped with rotating shaft one 5, the bottom of rotating shaft one 5 extends into valve body 1 and is connected with valve plate 6, the top of rotating shaft one 5 extends into control box 3 and is connected with worm gear 7, control box 3 and located one side of worm gear 7 are equipped with rotating shaft two 8, the outer wall of rotating shaft two 8 is equipped with the worm 9 matched with worm gear 7, one side of rotating shaft two 8 extends to the outside of control box 3 and is connected with rotating wheel 10, one side of control box 3 is equipped with the anti-rotation assembly matched with rotating shaft two 8.

[0025] Embodiment two;

[0026] As Figures 1-4As shown, including valve body 1, both sides of which are provided with connecting flange 2, the top end of which is provided with control box 3, which is connected with valve body 1 through fixing frame 4, the bottom end of which is provided with rotating shaft one 5, the bottom end of which extends into valve body 1 and is connected with valve plate 6, the top end of which extends into control box 3 and is connected with worm wheel 7, one side of which in control box 3 is provided with rotating shaft two 8, the outer wall of which is provided with worm 9 matched with worm wheel 7, one side of which extends out of control box 3 and is connected with rotating wheel 10, one side of which is provided with anti-rotation assembly matched with rotating shaft two 8. The connecting part of valve body 1 and rotating shaft one 5 is provided with sealing sleeve. Rotating wheel 10 is fixedly connected with rotating shaft two 8, and the outer wall of rotating wheel 10 is provided with anti-skid rubber sleeve. The anti-rotation assembly comprises inner tooth ring 11 provided on one side of control box 3, which is connected with control box 3 through elastic assembly, and the outer wall of rotating shaft two 8 is fixedly provided with limiting gear 12 matched with inner tooth ring 11. The elastic assembly comprises symmetrically arranged mounting sleeve 13 provided on both sides of rotating shaft two 8 on control box 3, the mounting sleeve 13 is provided with sliding block 14 matched therewith, the sliding block 14 is connected with mounting sleeve 13 through spring 15, one side of the sliding block 14 away from spring 15 is provided with pressing rod 16, one side of the pressing rod 16 extends out of mounting sleeve 13 and is connected with inner tooth ring 11. The outer wall of mounting sleeve 13 is rotatably connected with mounting ring 17, the outer wall of mounting ring 17 is provided with limiting block 18 extending out of mounting sleeve 13, and the outer wall of mounting sleeve 13 is provided with L-shaped stroke hole 19 matched with limiting block 18.

[0027] In practical application, when the valve body 1 needs to be opened or closed, first, the personnel press the inner tooth ring 11, the inner tooth ring 11 moves away from the limiting gear 12, and the inner tooth ring 11 drives the pressing rod 16 and the sliding block 14 to extrude the spring 15, the spring 15 is extruded and starts to compress, in the process, the pressing rod 16 drives the limiting block 18 to move on the L-shaped stroke hole 19 through the installation ring 17, then the limiting block 18 is rotated to be clamped in the L-shaped stroke hole 19 to limit the pressing rod 16, then the personnel rotates the rotating wheel 10 to drive the rotating shaft two 8 to rotate, the rotating shaft two 8 drives the worm 9 to rotate, the worm 9 drives the worm wheel 7 to rotate, the worm wheel 7 drives the valve plate 6 to rotate through the rotating shaft one 5 to open or close the valve body 1, after finishing, the personnel reversely rotates the limiting block 18 to release the limiting of the pressing rod 16, at this time, the spring 15 is reset to drive the inner tooth ring 11 to move and engage with the limiting gear 12 to limit the rotating wheel 10, when the rotating wheel is not used, the anti-rotation assembly can lock and limit the rotating wheel, prevent the rotating wheel from rotating due to external accidental impact, and further cause the valve body to be opened or closed, improve the safety of the butterfly valve, and the anti-rotation assembly limits the rotating wheel through the elastic assembly, the inner tooth ring and the limiting gear, is simple to use and stable in limiting.

[0028] In summary, by means of the above technical scheme of the utility model, when the rotating wheel is not used, the anti-rotation assembly can lock and limit the rotating wheel, prevent the rotating wheel from rotating due to external accidental impact, and further cause the valve body to be opened or closed, improve the safety of the butterfly valve, and the anti-rotation assembly limits the rotating wheel through the elastic assembly, the inner tooth ring and the limiting gear, is simple to use and stable in limiting.

[0029] The above only describes preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A butterfly valve with a self-locking structure, characterized in that, The utility model provides a valve body (1) both sides are equipped with the connecting flange (2), the valve body (1) top is equipped with the control box (3), the control box (3) is connected with the valve body (1) through the fixed frame (4), the control box (3) bottom is equipped with the pivot one (5), the pivot one (5) bottom extends to the valve body (1) with valve plate (6) is connected, the pivot one (5) top extends to the control box (3) with worm wheel (7) is connected, the control box (3) and located worm wheel (7) one side is equipped with the pivot two (8), the pivot two (8) outer wall is equipped with the worm (9) with worm wheel (7) is matched, the pivot two (8) one side extends to the control box (3) with runner (10) is connected outside, the control box (3) one side is equipped with the anti -rotation component with pivot two (8) is matched, the elastic component includes the control box (3) and located pivot two (8) both sides are equipped with the symmetrical installation sleeve (13) of setting, the installation sleeve (13) is equipped with the slider (14) with it is matched, the slider (14) is connected with the installation sleeve (13) through spring (15), the slider (14) is equipped with the pressure bar (16) one side away from the spring (15), the pressure bar (16) one side extends to the installation sleeve (13) with the inner tooth ring (11) is connected outside.

2. The butterfly valve with self-locking structure according to claim 1, characterized in that, The valve body (1) is equipped with a sealing sleeve at the connection with the pivot one (5).

3. The butterfly valve with self-locking structure according to claim 1, characterized in that, The runner (10) is fixedly connected with the pivot two (8), and a non-slip rubber sleeve is sleeved on the outer wall of the runner (10).

4. The butterfly valve with self-locking structure according to claim 1, characterized in that, The anti-rotation assembly includes an inner tooth ring (11) provided on one side of the control box (3), the inner tooth ring (11) is connected with the control box (3) through an elastic assembly, and a limiting gear (12) matched with the inner tooth ring (11) is fixedly sleeved on the outer wall of the pivot two (8).

5. The butterfly valve with self-locking structure according to claim 1, characterized in that, An installation ring (17) is rotatably connected to the outer wall of the pressure bar (16) in the installation sleeve (13), a limiting block (18) extending out of the installation sleeve (13) is arranged on the outer wall of the installation ring (17), and an L-shaped stroke hole (19) matched with the limiting block (18) is formed in the outer wall of the installation sleeve (13).

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