Sealing means

Abstract

The invention discloses a sealing device. The sealing device comprises an outer sleeve and an inner sleeve, wherein the inner sleeve is sleeved with the outer sleeve, the outer sleeve can slide relative to the inner sleeve, an interval exists between a middle section of the inner wall of the outer sleeve and the outer wall of the inner sleeve to form a cavity, the cavity is divided into a left section and a right section, and the parts, corresponding to the left section of cavity and the right section of cavity, of the wall of the outer sleeve are respectively provided with a hole used for charging or discharging medium. When the outer sleeve slides towards one side relative to the inner sleeve, the size of the cavity at the other side gradually decreases, and the sections, making contact with the inner sleeve, of the two ends of the outer sleeve are respectively provided with a sealing device body. When the cavity at one side is charged with the medium, the cavity at the other side is not charged, the pressure difference at two sides will push the outer sleeve to move to the side, with the medium, of the outer sleeve. When the medium is charged enough, pressure will enable the outer sleeve to be in tight abutting connection with other objects, no interval exits, certain pressure can be borne, and therefore no dust is discharged from the abutting connection position. The sealing device is favorable for guaranteeing a good environment, is favorable for the health of work personnel, and can also reduce material loss.

Description

technical field [0001] The invention relates to the technical field of sealing devices, in particular to a sealing device suitable for a material operation place where dust is easily generated. Background technique [0002] During the production operation of the factory, there are often materials that need to be discharged from one place to the transportation tool, and then transported to the next place. Some materials contain dust particles, which are easy to generate dust during the shipment process, pollute the environment, and cause great harm to the health of the staff. In order to reduce pollution and damage to health, some transport vehicles are designed as closed bodies, and holes are opened on the top to connect with material discharge pipes to realize the loading and unloading process. This method greatly reduces the generation of dust. However, there is still a gap at the joint between the transport vehicle and the material discharge pipe, and some dust still fl...

AI Technical Summary

Problems solved by technology

The problem with this method is that the counterparty speed is slow, the number, physical strength and technical requirements of the staff are high, and there is a certain danger, which is not good for safe production.

And poor sealing performance

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