CN203476781U

CN203476781U - Sealing structure for two-way self-adaptive pump

Info

Publication number: CN203476781U
Application number: CN201320504163.4U
Authority: CN
Inventors: 林文瀚; 朱挺辉
Original assignee: SANHE ELECTRICAL APPLIANCE (FUJIAN) CO Ltd
Current assignee: SANHE ELECTRICAL APPLIANCE (FUJIAN) CO Ltd
Priority date: 2013-08-19
Filing date: 2013-08-19
Publication date: 2014-03-12
Anticipated expiration: 2023-08-19

Abstract

A sealing structure for a two-way self-adaptive pump is composed of a press cover (1), a sealing ring (2) and a pump body (3). The sealing structure is characterized in that the upper face and the lower face of the sealing ring (2) are planes, a part of materials are hollowed out from one side of the sealing ring to form four lips, the thicknesses of the lips become smaller from the middle to the left side and the right side, and the outermost edge is 0.1-0.5mm thick. When the inner side of the pump body (3) is high in pressure, due to the fact that the lips are only 0.1-0.5mm thick, after the lips expand due to high pressure, the lips are tightly attached to the upper work face and the lower work face for sealing; meanwhile, due to the fact that the lips are thin and soft, even if work faces of a component slightly deform, the lips can still be tightly attached to the upper work face and the lower work face for sealing after expanding due to high pressure; when the outer side of he pump body (3) is high in pressure, similarly, due to the fact that the lips are only 0.1-0.5mm thick, the lips are tightly attached to the upper work face and the lower work face for sealing after expanding due to high pressure; no matter the internal pressure of the pump is higher than the external pressure of the pump or not, sealing can be achieved naturally, and two-way self-adaptive sealing is achieved.

Description

A kind of bidirectional self-adaptive pump sealing configuration

Technical field

The utility model relates generally to a kind of bidirectional self-adaptive pump sealing configuration.

Background technique

Pump part seals with O RunddichtringO conventionally, but when some special material parts (as working of plastics, stamping part etc.) are upper, because these material surfaces are scarcely processed, Surface deformation amount is relatively large, makes common O type circle cannot be close to its surface and seals.

Summary of the invention

In order to solve the problem of above-mentioned existence, pump parts for special material, the utility model provides a kind of bidirectional self-adaptive pump sealing configuration, the two-way two kinds of outside high or low situations of pump built-in pressure ratio that are applicable to that refer to, self adaption refer to Sealing can be under the effect of pressure the slight deformation of natural adaptation sealing surfaces, this structure can realize better sealing effect on the working of plastics of pump or stamping part, its sealing configuration as shown in Figure 1:

1. the utility model sealing configuration is comprised of gland (1), seal ring (2), the pump housing (3), it is characterized in that seal ring (2) is plane up and down, side is emptied a part of material, form 4 lip limits, lip limit starts both sides to the left and right from neutral position, by thick, to thin, ragged edge is 0.1-0.5mm, and its sectional shape as shown in Figure 2;

2. when the pump housing (3) inner side is high pressure, because lip limit only has 0.1-0.5mm, be subject to after high pressure inflation, lip limit is just close to upper and lower two working surfaces and realizes sealing, simultaneously because lip limit is very thin, very soft, even if component working face has slight distortion, lip limit is subject to also can be close to upper and lower two working surfaces after high pressure inflation, realizes sealing; When the pump housing (3) outside is high pressure, same, because lip limit only has 0.1-0.5mm, be subject to after high pressure inflation, lip limit is just close to upper and lower two working surfaces and realizes sealing, like this no matter be that pump built-in pressure ratio outside is high or low, can naturally realize sealing, thereby realize bidirectional self-adaptive sealing.

accompanying drawing explanation

Fig. 1 is model utility bidirectional self-adaptive pump sealed structural representation, and Fig. 2 is model utility bidirectional self-adaptive pump sealed section figure.

Embodiment

When the pump housing (3) inner side is high pressure, because lip limit only has 0.1-0.5mm, be subject to after high pressure inflation, lip limit is just close to upper and lower two working surfaces and realizes sealing, simultaneously because lip limit is very thin, very soft, even if component working face has slight distortion, lip limit is subject to also can be close to upper and lower two working surfaces after high pressure inflation, realizes sealing; When the pump housing (3) outside is high pressure, same, because lip limit only has 0.1-0.5mm, be subject to after high pressure inflation, lip limit is just close to upper and lower two working surfaces and realizes sealing, like this no matter be that pump built-in pressure ratio outside is high or low, can naturally realize sealing, thereby realize bidirectional self-adaptive sealing.

Claims

1. a bidirectional self-adaptive pump sealing configuration, is comprised of gland (1), seal ring (2), the pump housing (3), it is characterized in that seal ring (2) top and bottom are plane, and side is emptied a part of material, forms 4 lip limits.

2. a kind of bidirectional self-adaptive pump sealing configuration according to claim 1, it is characterized in that the upper lower plane of seal ring (2) is sealing surface, side is emptied part for inflation face, and lip limit starts both sides to the left and right from neutral position, by thick, to thin, ragged edge is 0.1-0.5mm.