Butterfly valve with eccentric structure

Abstract

The utility model relates to the technical field of butterfly valves, and discloses an eccentric structure butterfly valve which comprises a mounting box and a positioning mechanism, a first telescopic rod is fixedly mounted on the inner bottom wall of the mounting box, the output end of the first telescopic rod is fixedly connected with a connecting plate, a connecting column is fixedly arranged at the top of the connecting plate, and the connecting column is fixedly connected with the positioning mechanism. A through hole is formed in the center of the top of the mounting box, and the side surface of the connecting column is movably connected with the interior of the through hole. According to the butterfly valve of the eccentric structure, by arranging the moving plates, the positioning block, the pedal piece, the connecting rods and the second springs, a user treads the pedal piece downwards before rotating the valve rod of the eccentric butterfly valve, so that the connecting rods on the two sides of the pedal piece are driven to move downwards, and the two moving plates move relatively under the tension action of the two second springs; the left side and the right side of the connecting plate are clamped and positioned through the two sets of positioning blocks, at the moment, downward pressing and upward pulling force generated when a user rotates the valve rod cannot cause shaking of the valve body, and therefore the stability of the eccentric butterfly valve during operation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to an eccentric structure butterfly valve. Background Art

[0002] Chinese patent CN216789251U provides an eccentric butterfly valve with a bottom positioning structure, which is easy to position during installation to avoid displacement of the valve body caused by installation. At the same time, it can effectively absorb shock force during use to avoid shaking of the valve body, ensure stability during use, effectively protect the valve body, and increase its service life. However, when the user operates the valve stem of the valve body, it may generate downward pressure or upward pulling force on the valve body, which will cause the valve body to shake up and down, reducing the stability of the valve body during operation. Therefore, it is necessary to design an eccentric structure butterfly valve with stable operation. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the shortcomings of the prior art, the utility model provides an eccentric structure butterfly valve, which has the advantages of preventing shaking during operation and simple positioning operation. It solves the problem that when operating the existing eccentric butterfly valve, the user is likely to generate downward pressure or upward pulling force on the valve body, causing the valve body to shake up and down, thereby reducing the operational stability of the valve body.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an eccentric structure butterfly valve, comprising an installation box and a positioning mechanism, a first telescopic rod is fixedly installed on the inner bottom wall of the installation box, an output end of the first telescopic rod is fixedly connected to a connecting plate, a connecting column is fixedly arranged on the top of the connecting plate, a through hole is opened at the center of the top of the installation box, a side surface of the connecting column is movably connected to the inside of the through hole, and an eccentric butterfly valve is fixedly arranged on the top of the connecting column.

[0007] The positioning mechanism includes two movable plates, two positioning blocks are fixedly provided on one side of the movable plate close to the connecting plate, one side of the connecting plate is adapted to the two positioning blocks, two first springs are fixedly provided on the inner bottom wall of the installation box, the top ends of the two first springs are fixedly connected to pedals, the left and right sides of the pedals are hinged with connecting rods, the other ends of the two connecting rods are respectively rotatably connected to the opposite sides of the two movable plates, two fixed blocks are fixedly provided on the inner bottom wall of the installation box, second springs are fixedly provided on the opposite sides of the two fixed blocks, and the other ends of the two second springs are respectively fixedly connected to the bottom of the opposite sides of the two movable plates.

[0008] Preferably, a damping shock-absorbing spring is fixedly installed at the bottom of the connecting plate, and the bottom end of the damping shock-absorbing spring is fixedly connected to the inner bottom wall of the installation box. The installation box is fixed on the installation platform. When in use, the valve body is impacted and shakes, and the telescopic rod at the lower end will drive the damping shock-absorbing spring surrounding the surface to compress, which can absorb the generated shock force, thereby reducing the valve body from being subjected to a large resonance force, effectively ensuring the stability of the valve body during use, and not causing the connection between the valve body and the delivery pipe to deviate, thereby ensuring the stability of the valve body during use and facilitating use.

[0009] Preferably, a second telescopic rod is fixedly installed on the opposite side of the two fixed blocks, and the output ends of the two second telescopic rods are respectively fixedly connected to the bottom of the opposite side of the two movable plates. Through the telescopic effect of the two second telescopic rods, the relative or opposite movement of the two movable plates is made more horizontal and stable, thereby facilitating the shock absorption of the eccentric butterfly valve and the positioning operation during operation.

[0010] Preferably, a through groove is provided on the front side of the installation box, and the front side of the pedal is movably connected to the inside of the through groove. Before rotating the valve stem of the eccentric butterfly valve, the user steps on the pedal downward to move the connecting rods on both sides of the pedal downward, and the two movable plates are moved relative to each other through the pulling force of the two second springs, so that the two groups of positioning blocks clamp and position the left and right sides of the connecting plates. At this time, the downward pressure and upward pulling force generated by the user when the valve stem rotates will not cause the valve body to shake, thereby ensuring the stability of the eccentric butterfly valve during operation.

[0011] Compared with the prior art, the utility model provides an eccentric structure butterfly valve, which has the following beneficial effects:

[0012] 1. The eccentric structure butterfly valve is provided with a movable plate, a positioning block, a pedal, a connecting rod, a fixed block and a second spring. Before the user rotates the valve stem of the eccentric butterfly valve, the user steps on the pedal downward to move the connecting rods on both sides of the pedal downward. Through the pulling force of the two second springs, the two movable plates move relative to each other, so that the two groups of positioning blocks clamp and position the left and right sides of the connecting plates. At this time, the downward pressure and upward pulling force generated by the user when the valve stem rotates will not cause the valve body to shake, thereby ensuring the stability of the eccentric butterfly valve during operation.

[0013] 2. The eccentric structure butterfly valve is provided with a first telescopic rod and a damping shock-absorbing spring, and the mounting box is fixed on the mounting platform. When the valve body is impacted and shakes during use, the first telescopic rod will drive the damping shock-absorbing spring surrounding the surface to be compressed to absorb the generated shock force, thereby reducing the large resonance force on the valve body, effectively ensuring the stability of the valve body during use, and not causing the valve body and the delivery pipe to deviate. The connection, which ensures the stability of the valve body during use, is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a cross-sectional view of the eccentric structure butterfly valve of the utility model;

[0015] Figure 2 For this utility model Figure 1 A magnified view of the structure at center;

[0016] Figure 3 This is a schematic diagram of the structure of the eccentric butterfly valve of the utility model.

[0017] Wherein: 1. installation box; 2. first telescopic rod; 3. connecting plate; 4. connecting column; 5. eccentric butterfly valve; 6. moving plate; 7. positioning block; 8. first spring; 9. pedal; 10. connecting rod; 11. fixing block; 12. second spring; 13. damping shock absorbing spring; 14. second telescopic rod; 15. through groove. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-3 The top of the connecting plate 3 is fixedly provided with a connecting column 4, and a through hole is provided at the center of the top of the connecting plate 3. The side surface of the connecting column 4 is movably connected with the inside of the through hole. The top of the connecting column 4 is fixedly provided with an eccentric butterfly valve 5. The first telescopic rod 2 and the damping shock absorbing spring 13 are provided. The installing box 1 is fixed on the installing platform. When the valve body is impacted and shakes, the first telescopic rod 2 will drive the damping shock absorbing spring 13 around the surface to compress, so as to absorb the generated shock force, thereby reducing the large resonance force on the valve body, effectively ensuring the stability of the valve body during use, and will not cause the displacement of the connection between the valve body and the conveying pipe, ensuring the stability of the valve body during use, and facilitating use.

[0020] The positioning mechanism includes two movable plates 6, two positioning blocks 7 are fixedly provided on one side of the movable plate 6 close to the connecting plate 3, one side of the connecting plate 3 is adapted to the two positioning blocks 7, two first springs 8 are fixedly installed on the inner bottom wall of the installation box 1, and the tops of the two first springs 8 are fixedly connected with pedals 9, a through slot 15 is provided on the front of the installation box 1, and the front side of the pedal 9 is movably connected to the inside of the through slot 15, and the left and right sides of the pedal 9 are hinged with connecting rods 10, and the other ends of the two connecting rods 10 are respectively rotatably connected to the opposite sides of the two movable plates 6, and the inner bottom wall of the installation box 1 is fixedly provided with two fixed blocks 11, and the opposite sides of the two fixed blocks 11 are fixedly installed with second springs 12, and the other ends of the two second springs 12 are respectively connected to the two movable plates 6 The bottom of the opposite side is fixedly connected, and the second telescopic rod 14 is fixedly installed on the opposite side of the two fixed blocks 11. The output ends of the two second telescopic rods 14 are respectively fixedly connected to the bottom of the opposite side of the two movable plates 6. A movable plate 6, a positioning block 7, a pedal 9, a connecting rod 10, a fixed block 11 and a second spring 12 are provided. Before rotating the valve stem of the eccentric butterfly valve 5, the user steps on the pedal 9 downward to drive the connecting rods 10 on both sides of the pedal 9 to move downward. Through the pulling force of the two second springs 12, the two movable plates 6 are relatively moved, so that the two groups of positioning blocks 7 clamp and position the left and right sides of the connecting plate 3. At this time, the downward pressure and upward pulling force generated by the user when the valve stem is rotated will not cause the valve body to shake, thereby ensuring the stability of the eccentric butterfly valve 5 during operation.

[0021] When in use, before rotating the valve stem of the eccentric butterfly valve 5, the user steps on the pedal 9 downward to move the connecting rods 10 on both sides of the pedal 9 downward, and the two movable plates 6 are relatively moved by the pulling force of the two second springs 12, so that the two sets of positioning blocks 7 clamp and position the left and right sides of the connecting plate 3. At this time, the downward pressure and upward pulling force generated by the user when rotating the valve stem will not cause the valve body to shake, thereby ensuring the stability of the eccentric butterfly valve 5 during operation. The eccentric structure butterfly valve fixes the valve body position by stepping on the pedal 9, preventing the valve body from shaking when operating the valve stem, and the positioning operation of the valve body is simple, which is convenient for the stable operation and use of the eccentric butterfly valve 5.

[0022] Although the 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. An eccentric structure butterfly valve, comprising a mounting box (1) and a positioning mechanism, characterized in that: A first telescopic rod (2) is fixedly mounted on the inner bottom wall of the installation box (1); a connecting plate (3) is fixedly connected to the output end of the first telescopic rod (2); a connecting column (4) is fixedly arranged on the top of the connecting plate (3); a through hole is opened at the center of the top of the installation box (1); a side surface of the connecting column (4) is movably connected to the inside of the through hole; an eccentric butterfly valve (5) is fixedly arranged on the top of the connecting column (4); The positioning mechanism comprises two movable plates (6), two positioning blocks (7) are fixedly arranged on one side of the movable plate (6) close to the connecting plate (3), one side of the connecting plate (3) is adapted to the two positioning blocks (7), two first springs (8) are fixedly arranged on the inner bottom wall of the installation box (1), the top ends of the two first springs (8) are fixedly connected with pedals (9), the left and right sides of the pedals (9) are hinged with connecting rods (10), the other ends of the two connecting rods (10) are respectively rotatably connected to the opposite sides of the two movable plates (6), two fixed blocks (11) are fixedly arranged on the inner bottom wall of the installation box (1), the opposite sides of the two fixed blocks (11) are fixedly installed with second springs (12), the other ends of the two second springs (12) are respectively fixedly connected to the bottom of the opposite sides of the two movable plates (6).

2. The eccentric structure butterfly valve according to claim 1, characterized in that: A damping shock absorbing spring (13) is fixedly mounted on the bottom of the connecting plate (3), and the bottom end of the damping shock absorbing spring (13) is fixedly connected to the inner bottom wall of the installation box (1).

3. The eccentric structure butterfly valve according to claim 1, characterized in that: A second telescopic rod (14) is fixedly mounted on one side of the two fixed blocks (11) facing away from each other, and the output ends of the two second telescopic rods (14) are respectively fixedly connected to the bottom of the opposite side of the two movable plates (6).

4. The eccentric structure butterfly valve according to claim 1, characterized in that: A through slot (15) is provided on the front of the installation box (1), and the front side of the pedal (9) is movably connected to the inside of the through slot (15).

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