High-stability butterfly valve

Abstract

The utility model discloses a high-stability butterfly valve which comprises a supporting device, limiting devices are fixedly installed on the two sides of the top of the supporting device, a synchronizing device is fixedly installed at the front end of each limiting device, and each limiting device comprises a U-shaped movable rod, a reset spring, a supporting cavity, a rack, a connecting front plate and a supporting plate. The supporting plate is inserted into the supporting cavity in a sliding mode, the connecting front plate is fixedly installed at the front end of the supporting plate, the rack is fixedly installed at the side end, away from the supporting plate, of the connecting front plate, and the reset springs are symmetrically and fixedly installed between the supporting plate and the supporting cavity. And the U-shaped movable rod slidably penetrates through the end, away from the rack, of the supporting cavity and is connected with the supporting plate, the synchronizing device comprises inserting rods, a containing groove and a synchronizing plate, and the inserting rods are symmetrically inserted into the two ends of the top of the synchronizing plate in a sliding mode. Through the arrangement of the limiting device, the synchronizing device and the supporting device, the purpose of reinforced positioning of the valve rod is achieved.

Description

Technical Field

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

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for switching control of low-pressure pipeline media. A butterfly valve refers to a valve in which the closing member (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing.

[0003] For example, a butterfly valve with Chinese patent publication number CN203035976U includes a valve body, a valve stem, a disc plate and a handle. The handle is fixedly connected to the top of the valve stem, the lower part of the valve stem passes through the valve body and is fixedly connected to the disc plate, the contact position of the valve stem and the valve body is sealed by a filler, and a connecting piece for fixing the valve body is provided on one side of the valve body.

[0004] The butterfly valve in the above patent can only achieve the purpose of increasing the life of the valve when in use. However, when the existing butterfly valve is in use, since the valve plate in the butterfly valve is located inside the valve body and there is pressure inside the valve body, when the pressure contacts the valve plate, the pressure will be applied to the valve plate, causing the valve stem to become unstable. Therefore, a device is needed to improve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a high-stability butterfly valve to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a high-stability butterfly valve, comprising a supporting device, wherein limiting devices are fixedly installed on both sides of the top of the supporting device, and a synchronization device is fixedly installed on the front end of the limiting device, and the limiting device comprises a U-shaped movable rod, a reset spring, a supporting cavity, a rack, a connecting front plate and a supporting plate, and the supporting plate is slidably inserted into the interior of the supporting cavity, the connecting front plate is fixedly installed at the front end of the supporting plate, the rack is fixedly installed on the side end of the connecting front plate away from the supporting plate, the reset spring is symmetrically fixedly installed between the supporting plate and the supporting cavity, and the U-shaped movable rod slides through the supporting cavity and is connected to the support plate at one end away from the rack.

[0007] Preferably, the synchronization device comprises an insertion rod, a placement slot and a synchronization plate, the insertion rod is symmetrically slidably inserted at the top two ends of the synchronization plate, and the placement slot is opened at both ends of the synchronization plate.

[0008] Preferably, the supporting device includes a gear, a valve stem, a valve body and a butterfly plate, the valve stem is rotatably mounted at the top center of the valve body, the butterfly plate is fixedly mounted at the bottom center of the valve stem, and the gear is fixedly mounted at the top of the outer ring of the valve stem.

[0009] Preferably, the supporting cavity is fixedly mounted on both sides of the top of the valve body, and the synchronizing plate is fixedly mounted between the two supporting cavities.

[0010] Preferably, the rack is horizontally aligned with the gear.

[0011] Preferably, a round hole is formed at one end of the U-shaped movable rod away from the supporting cavity.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] When the device is in use, the rack meshes with both sides of the gear, so that the gear can be limited on both sides to prevent the valve stem from rotating. At the same time, the rack and the gear can be separated by pulling the U-shaped movable rod, so that the user can open or close the valve stem conveniently. In addition, the U-shaped movable rod can be limited and positioned by an insertion rod to prevent the rack and the gear from being out of contact when the valve body vibrates, thereby completing the work of strengthening the positioning of the valve stem. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a partial cutaway schematic diagram of the restriction device of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the synchronization device of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the support device of the utility model.

[0018] In the figure: 1-limiting device, 2-synchronizing device, 3-supporting device, 4-U-shaped movable rod, 5-reset spring, 6-supporting cavity, 7-rack, 8-connecting front plate, 9-supporting plate, 10-insertion rod, 11-placing groove, 12-synchronizing plate, 13-gear, 14-valve stem, 15-valve body, 16-butterfly plate. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-4The utility model provides an embodiment: a high-stability butterfly valve, including a supporting device 3, a limiting device 1 is fixedly installed on both sides of the top of the supporting device 3, a synchronization device 2 is fixedly installed on the front end of the limiting device 1, the limiting device 1 includes a U-shaped movable rod 4, a reset spring 5, a supporting cavity 6, a rack 7, a connecting front plate 8 and a supporting plate 9, the supporting plate 9 is slidably inserted into the interior of the supporting cavity 6, the connecting front plate 8 is fixedly installed at the front end of the supporting plate 9, the rack 7 is fixedly installed on the side end of the connecting front plate 8 away from the supporting plate 9, the reset spring 5 is symmetrically fixedly installed between the supporting plate 9 and the supporting cavity 6, the U-shaped movable rod 4 slides through the supporting cavity 6 and is connected to the supporting plate 9 at one end away from the rack 7.

[0021] The synchronization device 2 includes an insertion rod 10, a placement groove 11 and a synchronization plate 12. The insertion rod 10 is symmetrically slidably inserted at the top two ends of the synchronization plate 12. The placement groove 11 is opened at both ends of the synchronization plate 12 to facilitate the insertion of the insertion rod 10 into the interior of the placement groove 11.

[0022] The supporting device 3 includes a gear 13, a valve stem 14, a valve body 15 and a butterfly plate 16. The valve stem 14 is rotatably mounted at the top center of the valve body 15, the butterfly plate 16 is fixedly mounted at the bottom center of the valve stem 14, and the gear 13 is fixedly mounted at the top of the outer ring of the valve stem 14. When the gear 13 rotates, the valve stem 14 can be driven to rotate.

[0023] The supporting cavity 6 is fixedly installed on both sides of the top of the valve body 15, and the synchronous plate 12 is fixedly installed between the two supporting cavities 6 to support the insertion rod 10 to slide.

[0024] The rack 7 and the gear 13 are aligned horizontally, which improves the docking accuracy of the rack 7 and the gear 13.

[0025] A round hole is formed at one end of the U-shaped movable rod 4 away from the supporting cavity 6 , so that the insertion rod 10 can pass through the interior of the U-shaped movable rod 4 .

[0026] Working principle: During use, when the valve stem 14 needs to be rotated and adjusted, the plug rod 10 can be moved upward, so that the plug rod 10 is moved out from the placement groove 11 and the inside of the U-shaped movable rod 4, and the U-shaped movable rod 4 can be released. At the same time, the U-shaped movable rod 4 can be moved to the end away from the rack 7 until the rack 7 is out of contact with the gear 13, so that the gear 13 can be released, which is convenient for the rotation and adjustment of the valve stem 14. After that, the valve stem 14 is rotated again, so that the butterfly plate 16 can be driven to rotate inside the valve body 15, so as to facilitate the regulation of the flow inside the valve body 15. Subsequently, when the valve stem 14 is rotated to a specified angle, the U-shaped movable rod 4 can be released, and the elasticity of the reset spring 5 will drive the support plate 9 to reset, so that the rack 7 is meshed with the gear 13 again, so that the gear 13 can be restricted and fixed. At the same time, subsequently, when the rack 7 is meshed with the gear 13 again, When the U-shaped movable rod 4 is engaged, the end away from the supporting cavity 6 can be driven to insert into the inside of the placement groove 11, and then the insertion rod 10 is inserted into the circular hole inside the U-shaped movable rod 4, so that the U-shaped movable rod 4 can be restricted and fixed to prevent the U-shaped movable rod 4 from sliding and displacing again, thereby completing the purpose of strengthening the restriction on the valve stem 14. When the device is in use, the U-shaped movable rod 4 can be released by moving the insertion rod 10 out of the synchronization plate 12 and the inside of the U-shaped movable rod 4, and then the U-shaped movable rod 4 is pulled toward the end away from the supporting cavity 6, so that the rack 7 can be disengaged from the gear 13, so that the valve stem 14 can be adjusted, and afterwards, the elasticity of the reset spring 5 will drive the rack 7 to engage with the gear 13, so that the gear 13 can be restricted and fixed again, preventing the valve body 15 from vibrating and driving the valve stem 14 to rotate, thereby completing the work.

[0027] 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 high-stability butterfly valve, comprising a supporting device (3), wherein limiting devices (1) are fixedly mounted on both sides of the top of the supporting device (3), and a synchronizing device (2) is fixedly mounted on the front end of the limiting device (1), characterized in that: The limiting device (1) comprises a U-shaped movable rod (4), a reset spring (5), a support cavity (6), a rack (7), a connecting front plate (8) and a support plate (9); the support plate (9) is slidably inserted into the interior of the support cavity (6); the connecting front plate (8) is fixedly mounted on the front end of the support plate (9); the rack (7) is fixedly mounted on the side end of the connecting front plate (8) away from the support plate (9); the reset spring (5) is symmetrically fixedly mounted between the support plate (9) and the support cavity (6); the U-shaped movable rod (4) slides through the support cavity (6) and is connected to the support plate (9) at one end away from the rack (7).

2. A high stability butterfly valve according to claim 1, characterized in that: The synchronization device (2) comprises an insertion rod (10), a placement groove (11) and a synchronization plate (12); the insertion rod (10) is symmetrically slidably inserted at the top two ends of the synchronization plate (12); and the placement groove (11) is provided at the two ends of the synchronization plate (12).

3. A high stability butterfly valve according to claim 2, characterized in that: The supporting device (3) comprises a gear (13), a valve stem (14), a valve body (15) and a butterfly plate (16); the valve stem (14) is rotatably mounted at the top center of the valve body (15); the butterfly plate (16) is fixedly mounted at the bottom center of the valve stem (14); and the gear (13) is fixedly mounted at the top end of the outer ring of the valve stem (14).

4. A high stability butterfly valve according to claim 3, characterized in that: The support cavity (6) is fixedly mounted on both sides of the top of the valve body (15), and the synchronization plate (12) is fixedly mounted between the two support cavities (6).

5. A high stability butterfly valve according to claim 4, characterized in that: The rack (7) is horizontally aligned with the gear (13).

6. A high stability butterfly valve according to claim 5, characterized in that: A circular hole is formed at one end of the U-shaped movable rod (4) away from the supporting cavity (6).

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