CN-224214360-U - End cover side plate assembly of gear pump

CN224214360UCN 224214360 UCN224214360 UCN 224214360UCN-224214360-U

Abstract

The utility model discloses an end cover side plate assembly of a gear pump, which comprises a front cover, a rear cover and two side plates matched with the front cover or the rear cover respectively, wherein the front cover and the rear cover are respectively provided with a plurality of connecting holes, the rear cover is provided with two flow channels, the two side plates are 8-shaped, the front cover, the rear cover and the two side plates are respectively provided with two gear shaft holes, the middle parts of the inner end surfaces of the two side plates are respectively provided with a low-pressure unloading groove and a high-pressure unloading groove, the inner end surfaces of the front cover and the rear cover are respectively provided with an annular sealing groove, the inner end surfaces in the annular sealing grooves of the front cover and the rear cover are respectively provided with a W-shaped sealing groove, and sealing rings with corresponding shapes are respectively arranged in the annular sealing grooves and the W-shaped sealing grooves.

Inventors

WU LIN
NI BING
CAO WEI
JIANG YIWEI
LIU HUAMING

Assignees

四川长江液压件有限责任公司

Dates

Publication Date: 20260508
Application Date: 20250523

Claims (2)

1. The end cover side plate assembly of the gear pump comprises a front cover, a rear cover and two side plates matched with the front cover or the rear cover respectively, wherein the front cover and the rear cover are respectively provided with a plurality of connecting holes, the rear cover is provided with two flow channels, the two side plates are 8-shaped, the front cover, the rear cover and the two side plates are respectively provided with two gear shaft holes, the middle parts of the inner end surfaces of the two side plates are respectively provided with a low-pressure unloading groove and a high-pressure unloading groove, the inner end surfaces of the front cover and the rear cover are respectively provided with an annular sealing groove, and the gear pump is characterized in that W-shaped sealing grooves are respectively arranged on the inner end surfaces in the annular sealing grooves of the front cover and the rear cover, and sealing rings with corresponding shapes are respectively arranged in the annular sealing grooves and the W-shaped sealing grooves.
2. The end cover side plate assembly of a gear pump according to claim 1, wherein two sides of the center of each W-shaped sealing groove are connected through a connecting groove between two corresponding gear shaft holes, and corresponding sealing rings are provided with connecting sections arranged in the connecting grooves.

Description

End cover side plate assembly of gear pump Technical Field The present utility model relates to an end cap side plate assembly for a gear pump. Background The side plate of the gear pump is a key component of the gear pump, and the structure of the gear pump is provided with the functions of increasing the wear resistance and axial compensation with the end face of the gear. The existing gear pump is characterized in that two side plates of the gear pump are arranged between a front cover and two gears or between a rear cover and two gears, the front cover, the rear cover and the two side plates are respectively provided with two gear shaft holes, the two side plates are 8-shaped, the middle parts of inner end surfaces of the two side plates, which are attached to the end surfaces of the two gears, are respectively provided with a low-pressure unloading groove and a high-pressure unloading groove, the outer end surfaces of the two side plates, which are attached to the front cover or the rear cover, are respectively provided with a W-shaped sealing groove, sealing rings with corresponding shapes are arranged in the W-shaped sealing grooves, due to the existence of the W-shaped sealing grooves, the thickness of the side plates is large, the requirements on the flatness of the groove bottom, the perpendicularity of the side wall and the surface roughness are strict, multiple-work-together processing is needed, the complexity is high, the processing difficulty is high, and the material removal rate of the sealing groove area is low, and the material utilization rate is increased. Disclosure of Invention The utility model aims to overcome the defects in the prior art and provide the end cover side plate assembly of the gear pump, which not only can reduce the thickness of the side plate, but also is convenient to process and can reduce the comprehensive cost. In order to achieve the aim, the end cover side plate assembly of the gear pump comprises a front cover, a rear cover and two side plates which are respectively matched with the front cover or the rear cover, wherein the front cover and the rear cover are respectively provided with a plurality of connecting holes, the rear cover is provided with two flow channels, the two side plates are respectively 8-shaped, the front cover, the rear cover and the two side plates are respectively provided with two gear shaft holes, the middle parts of the inner end surfaces of the two side plates are respectively provided with a low-pressure unloading groove and a high-pressure unloading groove, and the inner end surfaces of the front cover and the rear cover are respectively provided with an annular sealing groove; according to the utility model, the W-shaped sealing grooves of the original two side plates are changed on the inner end surfaces of the front cover and the rear cover, so that the thickness of the side plates can be reduced, the W-shaped sealing grooves are combined with the processing of the original annular sealing grooves, the processing procedure is optimized, the processing is convenient, and the comprehensive cost can be reduced; As a further improvement of the utility model, the two sides of the center of each W-shaped sealing groove are connected through the connecting groove between the two corresponding gear shaft holes, and the corresponding sealing ring is provided with a connecting section arranged in the connecting groove; in summary, the utility model not only can reduce the thickness of the side plate, but also is convenient to process and can reduce the comprehensive cost. Drawings Fig. 1 is a front view of an embodiment of the present utility model. Fig. 2 is a front view of the side panel of fig. 1. Fig. 3 is a front view of the front cover of fig. 1. Fig. 4 is a front view of the rear cover of fig. 1. Detailed Description The present utility model will be described in further detail with reference to the accompanying drawings. As shown in fig. 1 to 4, an end cover side plate assembly of a gear pump in this embodiment includes a front cover 1, a rear cover 2, two side plates 3 respectively matched with the front cover or the rear cover, the front cover 1 and the rear cover 2 are respectively provided with a plurality of connecting holes 4, the rear cover 2 is provided with two flow passages 5, 6, the two side plates 3 are 8-shaped, the front cover 1, the rear cover 2 and the two side plates 1 are respectively provided with two gear shaft holes 7, 8, the middle parts of the inner end surfaces of the two side plates 3 are respectively provided with a low pressure unloading groove 9 and a high pressure unloading groove 10, the inner end surfaces of the front cover 1 and the rear cover 2 are respectively provided with an annular sealing groove 11 or 12, the inner end surfaces in the annular sealing groove 11 of the front cover 1 are respectively provided with a W-shaped sealing groove 13, the inner end surfaces in the annular sealing groove 1