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CN-224229276-U - Pneumatic butterfly valve soft seal structure

CN224229276UCN 224229276 UCN224229276 UCN 224229276UCN-224229276-U

Abstract

The utility model belongs to the technical field of butterfly valve sealing, in particular to a pneumatic butterfly valve soft sealing structure, which comprises a valve body, wherein two sides of the valve body are fixedly provided with a first valve body connecting plate, the inner side of the first valve body connecting plate is fixedly provided with a first rubber ring, two sides of the valve body are fixedly provided with a second valve body connecting plate, the outer side of the second valve body connecting plate is fixedly provided with a third rubber ring, two sides of the valve body are fixedly provided with an inflation module, the side surface of the inflation module is fixedly provided with a vent hole, the outer side of the valve body is fixedly provided with an inflation ring mounting block, the outer side of the first inflation ring is provided with a clamping groove, the inner part of the valve body is movably provided with a movable shaft, and when the pneumatic butterfly valve is used, the pneumatic butterfly valve soft sealing structure can be used for limiting the sealing structure and improving the sealing property of the device by being matched with the inflation ring mounting block to inflate and expand the first inflation ring.

Inventors

  • TANG ZHIMIN

Assignees

  • 上通阀门有限公司

Dates

Publication Date
20260512
Application Date
20250604

Claims (6)

  1. 1. A pneumatic butterfly valve soft sealing structure comprises a valve body (1) and is characterized in that two sides of the valve body (1) are fixedly provided with a first valve body connecting plate (4), the inner side of the first valve body connecting plate (4) is fixedly provided with a first rubber ring (5), two sides of the valve body (1) are fixedly provided with a second valve body connecting plate (6), the outer side of the second valve body connecting plate (6) is fixedly provided with a third rubber ring (18), two sides of the valve body (1) are fixedly provided with an inflation module (7), the side face of the inflation module (7) is fixedly provided with an air vent (8), the outer side of the valve body (1) is fixedly provided with an expansion ring mounting block (9), the inner side of the expansion ring mounting block (9) is fixedly provided with a first expansion ring (10), the inner side of the expansion ring mounting block (9) is fixedly provided with a second expansion ring (15), the outer side of the first expansion ring (10) is provided with a clamping groove (11), the inner side of the valve body (1) is movably provided with a movable shaft (12), the outer side of the movable shaft (12) is fixedly provided with a second expansion ring (14), and one end (14) of the movable shaft (14) is fixedly provided with a sealing plate (14).
  2. 2. The soft sealing structure of the pneumatic butterfly valve is characterized in that a connecting pipeline (2) is fixedly arranged at the top of the valve body (1), and a pneumatic actuator (3) is fixedly arranged at the top of the connecting pipeline (2).
  3. 3. The soft sealing structure of the pneumatic butterfly valve according to claim 1, wherein the number of the first valve body connecting plate (4) and the first rubber ring (5) is two.
  4. 4. A soft sealing structure of a pneumatic butterfly valve according to claim 1, wherein the number of the second valve body connecting plate (6) and the third rubber ring (18) is two.
  5. 5. The soft sealing structure of the pneumatic butterfly valve is characterized in that one side of the expansion ring mounting block (9) is fixedly connected with one side of the inflation module (7).
  6. 6. A soft sealing structure of a pneumatic butterfly valve as claimed in claim 1, wherein the number of the sealing plates (14) is two, and sealing plate supporting blocks (16) are fixedly arranged inside the two sealing plates (14).

Description

Pneumatic butterfly valve soft seal structure Technical Field The utility model belongs to the technical field of butterfly valve sealing, and particularly relates to a pneumatic butterfly valve soft sealing structure. Background The pneumatic butterfly valve is an important fluid control device and consists of a pneumatic actuator and a butterfly valve. The pneumatic actuator takes compressed air as a power source, and drives the disc-shaped butterfly plate to rotate in the pipeline by driving the valve rod to rotate, so that the through-flow cross section and the flow in the pipeline are changed, and the control of the fluid is realized. When the butterfly valve is used, the sealing structure is needed to be used for the internal structure of the butterfly valve, so that the blocking function is realized, the existing butterfly valve sealing device is mainly provided with a simple rubber sealing device for improving the blocking function of the butterfly valve, but after the butterfly valve is used for a long time, the rubber sealing device can be damaged due to scouring and corrosion of materials in the butterfly valve, so that the blocking function of the butterfly valve is influenced. Disclosure of utility model In order to solve the problems in the background art, the utility model provides a pneumatic butterfly valve soft sealing structure, which solves the problems that the existing butterfly valve sealing device adopts a simple rubber sealing device to improve the partition function of a butterfly valve, but the rubber sealing device is likely to be damaged due to scouring and corrosion of materials in the rubber sealing device after long-time use, so that the partition function of the butterfly valve is affected. The pneumatic butterfly valve soft sealing structure comprises a valve body, wherein first valve body connecting plates are fixedly arranged on two sides of the valve body, first rubber rings are fixedly arranged on the inner sides of the first valve body connecting plates, second valve body connecting plates are fixedly arranged on two sides of the valve body, third rubber rings are fixedly arranged on the outer sides of the second valve body connecting plates, an inflation module is fixedly arranged on two sides of the valve body, vent holes are fixedly arranged on the side faces of the inflation module, an expansion ring mounting block is fixedly arranged on the outer sides of the valve body, clamping grooves are formed in the outer sides of the first expansion rings, a movable shaft is movably arranged in the valve body, a movable shaft limiting ring is arranged on the outer side of one end of the movable shaft, a sealing plate is fixedly arranged on the outer side of the movable shaft, and a second rubber ring is fixedly arranged on the outer side of the sealing plate. Preferably, a connecting pipeline is fixedly arranged at the top of the valve body, and a pneumatic actuator is fixedly arranged at the top of the connecting pipeline. Preferably, the number of the first valve body connecting plate and the first rubber ring is two. Preferably, the number of the second valve body connecting plate and the third rubber ring is two. Preferably, one side of the expansion ring mounting block is fixedly connected with one side of the inflation module. Preferably, a first expansion ring is fixedly arranged on the inner side of the expansion ring mounting block, and a second expansion ring is fixedly arranged on the inner side of the expansion ring mounting block. Preferably, the number of the sealing plates is two, and sealing plate supporting blocks are fixedly arranged in the two sealing plates. Compared with the prior art, the utility model has the beneficial effects that: The air vent can be connected with an external pipeline, and the first expansion ring and the second expansion ring can be inflated by matching with the expansion ring installation block through the inflation module, so that the closed structure can be limited when the butterfly valve is closed, and the closure of the device is improved. Drawings The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings: FIG. 1 is a first perspective view of the present utility model; FIG. 2 is a second perspective view of the present utility model; FIG. 3 is a first cross-sectional view of the present utility model; fig. 4 is a second cross-sectional view of the present utility model. The valve comprises a valve body 1, a connecting pipeline 2, a pneumatic actuator 3, a first valve body connecting plate 4, a first rubber ring 5, a second valve body connecting plate 6, a gas filling module 7, a gas filling module 8, a vent hole 9, an expansion ring mounting block 10, a first expansion ring 11, a clam