CN205503982U - From inflatable seal device - Google Patents

Abstract

A self-inflating sealing device, relating to a sealing device comprising a sealing member and a sealing groove; the sealing member is restricted in the sealing groove, and the sealing member is an inflatable hollow structure with air holes on one side, which can Inflate and pressurize the seal through the air hole. The air hole of the seal is facing the end of the relatively high air pressure. The sealing groove of the corresponding seal air hole is designed with a sealing groove air hole. The seal expands and automatically Inflate and cling to the sealing groove and the inner wall of the pressing surface, so that the space can be sealed. The utility model adopts a seal with air holes and a hollow structure, and injects gas into the hollow of the seal through the gas in the high-pressure space, so that the surface of the seal and the surface of the door body are closely attached, and there is no need for constant adjustment and compression to face the seal. The pressure can guarantee the technical requirement of sealing, and compared with the prior art, the structure is simple, the use is convenient and the sealing effect is better.

Description

A self-inflating sealing device

technical field

The utility model relates to a sealing device, in particular to a sealing structure including a sealing member, which is suitable for self-inflating sealing between spaces with different air pressures.

Background technique

At present, the sealing devices on the market are basically solid seals, which need to be pressed against the sealing groove by applying external pressure through the pressing surface, so that the gas cannot circulate between the spaces. When the pressure is different, the existing sealing device needs to constantly adjust the pressure on the sealing member to ensure the sealing technical requirements. However, due to the existence of conditions such as changes in the pressure between the spaces, it is difficult to grasp the magnitude of the pressure applied to the seal, which makes the seal structure more complicated.

Utility model content

The purpose of the invention of the utility model is to improve the sealing performance of the above-mentioned sealing device, provide a simple structure, easy to use, and can solve the problem of sealing between spaces when there is a pressure difference. Sealing of large doors that are not too tall.

A self-inflating sealing device, comprising a sealing member and a sealing groove; the sealing member is restricted in the sealing groove, and it is characterized in that: the sealing member is an inflatable hollow structure with air holes on one side, which can pass through The air hole inflates and pressurizes the seal. The air hole of the seal faces the end of the relatively high air pressure. The sealing groove of the corresponding seal air hole is designed with a seal groove air hole. The seal expands and self-inflates under the action of high air pressure And close to the sealing groove and the inner wall of the pressing surface, so that the space can be sealed.

The utility model adopts a seal with air holes and a hollow structure, and injects gas into the hollow of the seal through the gas in the high-pressure space, so that the surface of the seal and the surface of the door body are closely attached, and there is no need for constant adjustment and compression to face the seal. The pressure can guarantee the technical requirement of sealing, and compared with the prior art, the structure is simple, the use is convenient and the sealing effect is better.

Description of drawings

The drawings of the accompanying drawings of the utility model are described as follows:

Fig. 1 is a schematic diagram of a self-inflating sealing device of the present invention after being inflated;

Fig. 2 is a schematic diagram of a self-inflating sealing device of the present invention before inflating.

In the figure: 1. Pressing surface 2 Sealing element 3. Sealing groove 4. Sealing element air hole 5. Sealing groove air hole.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described as follows:

A self-inflating sealing device, comprising a sealing member 2 and a sealing groove 3; the sealing member 2 is limited in the sealing groove 3, and it is characterized in that: the sealing member 2 is an inflatable hollow structure, and one side is opened with The air hole can be used to inflate and pressurize the seal 2 through the air hole. The air hole 4 of the seal is facing the end of the relatively high pressure. The sealing groove 3 of the corresponding seal air hole 4 is designed with a sealing groove air hole 5. The seal 2 expands and self-inflates under the action of high air pressure and clings to the inner wall of the sealing groove 3 and the pressing surface 1, so that the space can achieve a sealing effect.

When in use, when the pressure difference between the two relatively sealed spaces becomes smaller, part of the gas will flow out from the air hole 3 of the sealing element into the space on the side of the high pressure side, and the force of the pressing surface can be reduced accordingly. One point, although the force required to press the surface becomes smaller, a better sealing effect can also be achieved; the gas flowing out from the sealing air hole 3 can also adjust the air pressure difference between the two spaces when the sealed space is small.

From the above structure, it can be seen that the air hole 4 of the sealing member is installed in the air hole 5 of the sealing groove, and must be kept transparent, which can be realized. And in the prior art, seal 2 is multi-purpose, for this reason, the utility model is also designed with anti-gas flow-out device at the pore inside seal, then the gas that is filled in the seal from high pressure space or manually is not flowable.

The gas outflow preventing device includes two semicircular elastic membranes, the arc sides of the two semicircular elastic membranes are respectively fixed and installed around the air hole 4 of the sealing member, and the two straight sides overlap each other. When there is gas inflated into the sealing part, the overlapping part of the two semicircular elastic membranes is bounced by the air pressure, and the air pressure can enter the sealing part 2, but when there is no gas or the air pressure at the air hole of the sealing part is lower than that in the sealing part Under the air pressure, the elastic film is under the action of the gas pressure in the sealing member 2, and the overlapping joint prevents the gas from flowing out. This structure can be applied to any occasion that needs to be sealed.

In the case that the air hole needs to be kept transparent and the gas outflow prevention device is designed, a vent pipe is also included, and the sealed vent pipe is placed in the air hole and passes through the joint of two semicircular elastic membranes. The use of the vent pipe makes the seal applicable to various occasions. The use of the breather pipe can be flexibly applied to the sealing of the space where there is a difference in air pressure when the general-purpose gas outflow prevention type seal is used.

In order to prevent the internal air pressure of the seal 2 from being high and the external air pressure low, the two semicircular elastic membranes are pressed out by the internal air pressure to cause the gas in the seal 2 to flow out. A leak-proof hard orifice is designed between the air holes inside.

The technical solutions disclosed in the specific embodiments of the utility model should not be construed as limiting the scope of the claims, and any technical solutions that use self-inflating seals to achieve sealing of different air pressure spaces should fall within the protection scope of the utility model.

Claims (5)

1. A self-inflating sealing device, comprising a sealing member (2) and a sealing groove (3); during use, the sealing member (2) is restricted in the sealing groove (3), characterized in that: the sealing The part (2) is an inflatable hollow structure, with an air hole on one side, through which the seal (2) can be inflated and pressurized. The air hole (4) of the seal is facing the end of the relatively high pressure, and the corresponding sealing The seal groove (3) of the part air hole (4) is designed with a seal groove air hole (5), the seal (2) expands and self-inflates under the action of high air pressure and clings to the seal groove (3) and the pressing surface (1) The inner wall achieves the sealing effect between the spaces. 2. A self-inflating sealing device according to claim 1, characterized in that a gas outflow prevention device is also designed at the air hole inside the sealing member. 3. A self-inflating sealing device according to claim 2, characterized in that: said gas outflow prevention device comprises two semicircular elastic membranes, and the arc sides of the two semicircular elastic membranes are respectively fixed and installed Around the air hole (4) of the sealing member, two straight sides overlap each other. 4. A self-inflating sealing device according to any one of claims 2 or 3, characterized in that: it also includes a vent tube, and the sealed vent tube is placed in the air hole and passed through two semicircular elastic films. connection. 5. A self-inflating sealing device according to claim 3, characterized in that: an air-leakage hard orifice plate is designed between the two semicircular elastic membranes and the air holes in the sealing member (2).