Butterfly plate structure of butterfly valve

Abstract

The utility model discloses a butterfly plate structure of a butterfly valve, which belongs to the technical field of valves and comprises a first butterfly plate and a second butterfly plate, a locking component is arranged between the first butterfly plate and the second butterfly plate, and the first butterfly plate and the second butterfly plate are locked and fixed together through the locking component. By means of the split type design, the whole butterfly plate structure is divided into the first butterfly plate and the second butterfly plate, the first butterfly plate and the second butterfly plate are locked and fixed together through the locking assembly, and after the first butterfly plate and the second butterfly plate are installed into the whole butterfly plate structure, the whole butterfly plate structure can be installed and fixed on a main shaft of a butterfly valve through the installation assembly. After the butterfly plate is used for a long time, if the surface of the butterfly plate is abraded and needs to be detached and replaced, the butterfly plate structure can be taken out of the butterfly valve only by detaching bolts on the mounting assembly, the butterfly plate structure does not need to be integrally replaced after being taken out, and only the side which is abraded seriously needs to be replaced. The purpose of saving materials and cost is achieved.

Description

Technical Field

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

[0002] The butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening, closing or regulating. The existing butterfly valve plate is usually a metal plate with a sealing ring on its surface. After long-term use, the butterfly plate and the sealing ring will be worn to varying degrees and need to be disassembled and replaced. The current connection between the butterfly plate and the butterfly valve is mostly a pin connection, that is, the butterfly plate is fixed in the butterfly valve by a rotating shaft pin, which is not easy to disassemble and replace.

[0003] For example, a Chinese patent with the publication (announcement) number CN218408559U discloses a butterfly plate structure of a butterfly valve, including a butterfly plate, and the butterfly plate includes a plate body, a mounting tube, a rubber ring, an electroplating layer, a waterproof membrane, a mounting ring, and a reinforcing rib. The butterfly plate structure of the butterfly valve is installed with a mounting ring and a rubber ring, so that when the plate body rotates, the rubber ring can replace the arc surface of the plate body and wear the valve body due to the installation of the rubber ring, and because the rubber ring is made of a soft material, when the plate body rotates to close the butterfly valve, the rubber ring is connected to the inner wall of the valve body and is squeezed by the valve body to produce deformation, so that the sealing effect is better and the service life of the plate body is increased. By installing a waterproof membrane and an electroplating layer, the plate body can be prevented from corrosion caused by long-term contact with water by the waterproof membrane, and the electroplating layer can prevent the waterproof membrane from being damaged by water flow and causing the waterproof effect to fail, further increasing the service life of the plate body and making the plate body less susceptible to corrosion.

[0004] The butterfly plate structure of the butterfly valve involved in the above patent is installed in the butterfly valve through an installation tube, and the sealing ring is sleeved on the surface of the butterfly plate. When it needs to be disassembled and replaced after long-term use, there is a problem of inconvenience in disassembly. Therefore, we need to propose a butterfly plate structure of a butterfly valve. Utility Model Content

[0005] The utility model aims to provide a butterfly plate structure of a butterfly valve, which has the advantage of being easy to disassemble, replace and maintain, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a butterfly plate structure of a butterfly valve, comprising a butterfly plate 1 and a butterfly plate 2, a locking assembly is arranged between the butterfly plate 1 and the butterfly plate 2, the butterfly plate 1 and the butterfly plate 2 are locked and fixed together by the locking assembly, rubber sealing rings are clamped at the edges of the butterfly plate 1 and the butterfly plate 2, a main frame is fixedly installed on the back of the butterfly plate 2, reinforcing frames are equidistantly installed on both sides of the main frame, and mounting components for connecting to the main shaft of the butterfly valve are installed at the upper and lower ends of the main frame.

[0007] Preferably, the mounting assembly includes mounting seats fixedly mounted on the upper and lower ends of the main keel, and mounting holes are provided on the surface of the mounting seats.

[0008] Preferably, the edges of the butterfly plate one and the butterfly plate two are provided with clamping grooves, and the rubber sealing ring is clamped and fixed by the clamping grooves on the edges of the butterfly plate one and the butterfly plate two.

[0009] Preferably, the locking assembly includes a locking rod arranged on one side of butterfly plate one, one end of the locking rod passes through butterfly plate one and butterfly plate two in sequence and extends to the outside of butterfly plate two, one end of the locking rod is threadedly connected to a locking nut, and one side of the locking nut is in contact with the surface of butterfly plate two.

[0010] Preferably, a countersunk hole is provided on the surface of the butterfly plate 1 at a position corresponding to the locking rod, and one end of the locking rod is hidden in the inner cavity of the countersunk hole.

[0011] Preferably, through holes are provided on the surfaces of the butterfly plate 1 and the butterfly plate 2 at positions corresponding to the locking rod, and the surfaces of the locking rod are slidably plugged into the inner cavities of the through holes.

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

[0013] The utility model adopts a split design to divide the entire butterfly plate structure into butterfly plate one and butterfly plate two. The butterfly plate one and butterfly plate two are locked and fixed together by a locking assembly. After being installed into an integral butterfly plate structure, they can be installed and fixed on the main shaft of the butterfly valve by the mounting assembly. After long-term use, if the surface of the butterfly plate becomes worn and needs to be disassembled and replaced, it is only necessary to remove the bolts on the mounting assembly to remove the butterfly plate structure from the butterfly valve. After removal, the butterfly plate structure does not need to be replaced as a whole, and only the side with more serious wear needs to be replaced, thereby achieving the purpose of saving materials and costs. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the main frame and the reinforced frame of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the card slot of the utility model.

[0018] In the figure: 1. Butterfly plate 1; 2. Butterfly plate 2; 3. Rubber sealing ring; 4. Main frame; 5. Reinforced frame; 6. Mounting seat; 7. Mounting hole; 8. Slot; 9. Locking rod; 10. Locking nut; 11. Countersunk hole; 12. Through hole. 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-Figure 4 The utility model provides a butterfly plate structure of a butterfly valve, including a butterfly plate 1 and a butterfly plate 2, a locking assembly is arranged between the butterfly plate 1 and the butterfly plate 2, the butterfly plate 1 and the butterfly plate 2 are locked and fixed together by the locking assembly, the locking assembly includes a locking rod 9 arranged on one side of the butterfly plate 1, one end of the locking rod 9 passes through the butterfly plate 1 and the butterfly plate 2 in sequence and extends to the outside of the butterfly plate 2, one end of the locking rod 9 is threadedly connected with a locking nut 10, and one side of the locking nut 10 is in contact with the surface of the butterfly plate 2.

[0021] In the present embodiment, the butterfly plate structure is a split design, which includes a butterfly plate 1 and a butterfly plate 2. When in use, the butterfly plate 1 and the butterfly plate 2 are locked and fixed together by a locking assembly so that they can be used as a whole. During specific installation, the user can fit the butterfly plate 1 and the butterfly plate 2 together, and then pass one end of the locking rod 9 through the butterfly plate 1 and the butterfly plate 2 in turn, and then screw the locking nut 10 on one end of the locking rod 9 to lock and fix the butterfly plate 1 and the butterfly plate 2 together.

[0022] Preferably, a countersunk hole 11 is provided on the surface of the butterfly plate 1 and located at the corresponding position of the locking rod 9, one end of the locking rod 9 is hidden in the inner cavity of the countersunk hole 11, and a through hole 12 is provided on the surface of the butterfly plate 1 and the butterfly plate 2 and located at the corresponding position of the locking rod 9, and the surface of the locking rod 9 is slidably plugged into the inner cavity of the through hole 12.

[0023] Through the setting of the countersunk hole 11, when the locking rod 9 is in the locked state, one end of the locking rod 9 will be hidden in the inner cavity of the countersunk hole 11, thereby improving the flatness of the surface of the butterfly plate 1. Through the setting of the through hole 12, a penetration space can be provided for the locking rod 9. When installing the locking rod 9, one end of the locking rod 9 can pass through the through holes 12 on the surfaces of the butterfly plates 1 and 2 in turn and extend to one side of the butterfly plate 2 to tighten the locking nut 10.

[0024] Among them, a rubber sealing ring 3 is clamped at the edges of the butterfly plate 1 and the butterfly plate 2, and a clamping groove 8 is opened at the edges of the butterfly plate 1 and the butterfly plate 2. The rubber sealing ring 3 is clamped and fixed by the clamping groove 8 at the edges of the butterfly plate 1 and the butterfly plate 2.

[0025] By setting the rubber sealing ring 3, the rubber sealing ring 3 is installed at the edge of the butterfly plate 1 and the butterfly plate 2, so as to improve the sealing performance between the butterfly plate structure and the inner wall of the butterfly valve. By setting the clamping groove 8, the rubber sealing ring 3 is clamped and fixed by the clamping groove 8 at the edge of the butterfly plate 1 and the butterfly plate 2. When installing, the rubber sealing ring 3 can be first clamped in the clamping groove 8 at the edge of the butterfly plate 1 or the butterfly plate 2, and then the butterfly plate 1 and the butterfly plate 2 are fitted together and locked and fixed by the locking assembly, so that the rubber sealing ring 3 is clamped and fixed in the clamping groove 8, and its installation and use position is fixed.

[0026] It is worth mentioning that a main frame 4 is fixedly installed on the back of the butterfly plate 2, and reinforcing frames 5 are equidistantly installed on both sides of the main frame 4. Mounting components for connecting with the main axis of the butterfly valve are installed on the upper and lower ends of the main frame 4, and the mounting components include mounting seats 6 fixedly installed on the upper and lower ends of the main keel, and mounting holes 7 are opened on the surface of the mounting seats 6.

[0027] By setting the installation component, the butterfly plate structure combined in this embodiment can be installed on the main shaft of the butterfly valve. During installation, the user can install it on the main shaft of the butterfly valve by passing the bolts through the mounting hole 7. When disassembling, the butterfly plate structure can be removed by directly loosening the bolts. By strengthening the setting of the skeleton 5, the strength and stability of the installation between the butterfly plate 2 and the main skeleton 4 can be improved.

[0028] 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 butterfly plate structure of a butterfly valve, comprising a butterfly plate 1 (1) and a butterfly plate 2 (2), characterized in that: A locking assembly is provided between the butterfly plate 1 (1) and the butterfly plate 2 (2), and the butterfly plate 1 (1) and the butterfly plate 2 (2) are locked and fixed together by the locking assembly. Rubber sealing rings (3) are clamped at the edges of the butterfly plate 1 (1) and the butterfly plate 2 (2). A main frame (4) is fixedly installed on the back of the butterfly plate 2 (2), and reinforcing frames (5) are equidistantly installed on both sides of the main frame (4). Mounting assemblies for connecting with the main shaft of the butterfly valve are installed at both upper and lower ends of the main frame (4).

2. The butterfly plate structure of a butterfly valve according to claim 1, characterized in that: The mounting assembly comprises a mounting seat (6) fixedly mounted on the upper and lower ends of the main keel, and a mounting hole (7) is provided on the surface of the mounting seat (6).

3. The butterfly plate structure of a butterfly valve according to claim 1, characterized in that: The edges of the butterfly plate 1 and the butterfly plate 2 are both provided with clamping grooves (8), and the rubber sealing ring (3) is clamped and fixed through the clamping grooves (8) at the edges of the butterfly plate 1 and the butterfly plate 2.

4. The butterfly plate structure of a butterfly valve according to claim 1, characterized in that: The locking assembly comprises a locking rod (9) arranged on one side of the butterfly plate one (1), one end of the locking rod (9) passes through the butterfly plate one (1) and the butterfly plate two (2) in sequence and extends to the outside of the butterfly plate two (2), one end of the locking rod (9) is threadedly connected to a locking nut (10), and one side of the locking nut (10) is in contact with the surface of the butterfly plate two (2).

5. The butterfly plate structure of a butterfly valve according to claim 4, characterized in that: A countersunk hole (11) is provided on the surface of the butterfly plate (1) at a position corresponding to the locking rod (9), and one end of the locking rod (9) is hidden in the inner cavity of the countersunk hole (11).

6. The butterfly plate structure of a butterfly valve according to claim 4, characterized in that: Through holes (12) are provided on the surfaces of the butterfly plate 1 (1) and the butterfly plate 2 (2) at positions corresponding to the locking rod (9), and the surfaces of the locking rod (9) are slidably plugged into the inner cavity of the through hole (12).

Images