CN203176345U - Improved oil catch sealing sheet - Google Patents

Abstract

The utility model belongs to the improvement of mechanical axis clearance sealing oil catch sealing sheet structures, and particularly provides an improved oil catch sealing sheet. The improved oil catch sealing sheet comprises a retainer, wherein oil catch sealing sheets matched with a shaft are mounted in grooves in a matched mode and the grooves are evenly distributed in the retainer. Among the oil catch sealing sheets which are evenly distributed and mounted in a matched mode on the retainer, the oil catch sealing sheet at the outermost end is of a semicircle shape, and the remaining oil catch sealing sheets can return oil. According to the structure of each oil catch sealing sheet which can return the oil, the bottom of an outer circular arc of the semicircular oil catch sealing sheet is provided with a notch. The improved oil catch sealing sheet is simple in structure, enables a sealing space formed among the sealing sheets, the shaft and the retainer to be communicated with the inside of a bearing box, and makes gathered oil flow back to an oil return box to prevent the oil from leaking out.

Description

Improved oil catch diaphragm seal

Technical field

The utility model belongs to the improvement of mechanical axis splaying sealed oil catch diaphragm seal structure, particularly a kind of improved oil catch diaphragm seal.

Background technique

The clearance seal of the seal form of some position, mechanical axis end for being constituted by the oil catch diaphragm seal, total three-layer sealed of this oil catch, three diaphragm seals with the axle between formed two relative sealed space, this space except and axle between have the less gap, be not connected with bearing housing inside in (as figure), come the oil catch place when fluid along axle, can fall into space 1,2, because being filled with oil gradually in the confined space, can coming in contact finally with axle after oil is full and cause leakage of oil along axial flow to the bearing housing outside.

Summary of the invention

The purpose of this utility model is to provide a kind of improved oil catch diaphragm seal, and it is simple in structure, and the seal space that forms between diaphragm seal, axle and the retainer is connected with bearing housing inside, makes the fluid of gathering flow back to fuel tank, prevents from leaking.

The purpose of this utility model is achieved in that a kind of improved oil catch diaphragm seal, be included in to cooperate in the uniform groove of retainer the oil catch diaphragm seal that matches with axle is installed, the oil catch diaphragm seal that uniform cooperation is installed on retainer its be positioned at outermost end be semi-round ring shape oil catch diaphragm seal, but remaining oil catch diaphragm seal is oil return oil catch diaphragm seal, but the structure of oil return oil catch diaphragm seal is for to arrange breach in the bottom of semi-round ring shape oil catch diaphragm seal external arc.

The utility model oil catch diaphragm seal that uniform cooperation is installed on retainer, what it was positioned at outermost end is semi-round ring shape oil catch diaphragm seal, but remaining oil catch diaphragm seal is oil return oil catch diaphragm seal, but oil return oil catch diaphragm seal makes the relative seal space that forms between oil catch diaphragm seal, axle and the retainer by breach and bearing housing internal communication in the bottom of semicircular ring oil catch diaphragm seal external arc breach to be set.When fluid accumulated in seal space inside, the static pressure of self made fluid be back to fuel tank.The utility model is simple in structure, has realized the seal space and the bearing housing internal communication that form between diaphragm seal, axle and the retainer making the fluid of gathering flow back to fuel tank, has prevented from leaking.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described, Fig. 1 is sectional structure schematic representation of the present utility model, but Fig. 2 is the main TV structure schematic representation of oil return oil catch diaphragm seal.

Embodiment

A kind of improved oil catch diaphragm seal, as shown in Figure 1 and Figure 2, be included in to cooperate in the uniform groove of retainer 1 the oil catch diaphragm seal that matches with axle is installed, the oil catch diaphragm seal that uniform cooperation is installed on retainer 1 its be positioned at outermost end be semi-round ring shape oil catch diaphragm seal 2, but remaining oil catch diaphragm seal is oil return oil catch diaphragm seal 3, but the structure of oil return oil catch diaphragm seal 3 is for to arrange breach 4 in the bottom of semi-round ring shape oil catch diaphragm seal external arc.The height of breach 4 is greater than the degree of depth of retainer 1 uniform groove.

Claims (2)

1. improved oil catch diaphragm seal, be included in to cooperate in the uniform groove of retainer (1) the oil catch diaphragm seal that matches with axle is installed, it is characterized in that: retainer (1) go up oil catch diaphragm seal that uniform cooperation installs its be positioned at outermost end be semi-round ring shape oil catch diaphragm seal (2), but remaining oil catch diaphragm seal is oil return oil catch diaphragm seal (3), but the structure of oil return oil catch diaphragm seal (3) is for to arrange breach (4) in the bottom of semi-round ring shape oil catch diaphragm seal external arc.

2. improved oil catch diaphragm seal according to claim 1, it is characterized in that: the height of breach (4) is greater than the degree of depth of the uniform groove of retainer (1).