CN215719480U

CN215719480U - Gear pump shaft seal structure

Info

Publication number: CN215719480U
Application number: CN202121608586.1U
Authority: CN
Inventors: 黄建明; 杨超; 徐腾命; 张超; 沈古风; 丁必顺
Original assignee: Goode Hydraulic Technology Jiangsu Co ltd
Current assignee: Goode Hydraulic Technology Jiangsu Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2022-02-01
Anticipated expiration: 2031-07-15

Abstract

The utility model discloses a gear pump shaft seal structure which comprises a rotating shaft, wherein a shaft seal is arranged outside the rotating shaft, the contact part of the inner side of the shaft seal and the rotating shaft is arc-shaped, an S-shaped cooling channel is arranged in the shaft seal, the outer side of the cooling channel is positioned on the shaft seal and is provided with a boss, a cooling pipe inlet pipe and a cooling pipe outlet pipe are arranged at two ends of the cooling channel for supplying cooling gas, and an outward convex limiting ring matched with grooves of the cooling pipe inlet pipe and the cooling pipe outlet pipe is arranged on the outer side of the boss. Through the cooling channel of the S-shaped of setting in the bearing seal, through discharging the cooling gas to the cooling channel in, the passageway of S-shaped effectively increases and the area of contact of bearing seal, effectively takes away the heat in the bearing seal, and the outer spacing collar of the outer boss of cooling channel is inseparabler with the connection between the cooling tube, prevents gas leakage.

Description

Gear pump shaft seal structure

Technical Field

The utility model relates to the technical field of gear pumps, in particular to a gear pump shaft seal structure.

Background

The gear pump is a rotary pump which transfers liquid or pressurizes the liquid by means of the change and movement of the working volume formed between a pump cylinder and a meshing gear, and a rotating shaft of the gear pump uses a shaft seal component in the rotating process, but the shaft seal needs to be cooled after the rotating shaft runs for a long time.

Although the cooling system is already applied to the shaft seal in the disclosed document, the cooling air and the cooling water in the cooling pipe directly bypass the shaft seal and do not provide a complete and sufficient cooling effect for the shaft seal, so that the cooling effect is not very obvious.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a gear pump shaft seal structure in order to fully cool a shaft seal.

The technical scheme of the utility model is as follows: gear pump bearing seal structure, including the pivot, the pivot is equipped with the bearing seal outward, and the inboard part that contacts with the pivot of bearing seal is the arc, is equipped with the cooling channel of S type in the bearing seal, and the cooling channel outside is located and is equipped with the boss on the bearing seal, and the cooling channel both ends are equipped with cooling tube import pipe and cooling tube outlet pipe and supply cooling gas, and the outside is equipped with and imports the outside convex spacing collar with cooling tube import pipe and cooling tube outlet pipe groove phase-match on the boss.

Further, the inner side of the shaft seal is wavy, and the contact part of the inner side of the shaft seal and the rotating shaft is outward arc-shaped.

Further, the arc-shaped bottom is in a circular arc shape or a straight line shape tightly attached to the rotating shaft.

Furthermore, the cooling channel is in the shape of an S-shaped elbow, the top and the bottom of the cooling channel are both positioned on the inner side of the shaft seal edge, and the cooling channel extends into the boss.

Further, the diameters of the cooling pipe inlet pipe and the cooling pipe outlet pipe are slightly larger than the outer diameter of the boss, and the cooling pipe inlet pipe and the cooling pipe outlet pipe are fastened on the outer side of the boss of the cooling channel through fasteners.

And sealing rubber gaskets are arranged between the inlet pipe and the outlet pipe of the cooling pipe and the fasteners.

The utility model has the advantages that: the inboard part that contacts with the pivot of bearing seal is the arc, under the prerequisite of guaranteeing the sealing contact between bearing seal and the pivot, space between bearing seal and the pivot of maximize, increase the heat dissipation, the cooling channel through the S-shaped of setting in the bearing seal, through discharging the cooling gas to the cooling channel in, the passageway of S-shaped effectively increases the area of contact with the bearing seal, effectively take away the heat in the bearing seal, the outer spacing collar of the outer boss of cooling channel, and the connection between the cooling tube is inseparabler, prevent gas leakage.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

FIGS. 3-4 are schematic structural views of two curved structures of the present invention;

wherein: 1. the device comprises a rotating shaft, 2 a shaft seal, 3 a cooling channel, 4 an arc-shaped structure, 5 a boss, 6 a sealing rubber pad, 7 a limiting ring, 8 a cooling pipe inlet pipe, 9 a cooling pipe outlet pipe, 10 a groove, 11 and a fastening piece.

Detailed Description

For the purpose of enhancing an understanding of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.

As shown in fig. 1-4, gear pump shaft seal structure, including pivot 1, pivot 1 is equipped with shaft seal 2 outward, the part that shaft seal 2 inboard and pivot 1 contact is arc 4, be equipped with the cooling channel 3 of S type in the shaft seal 2, the cooling channel 3 outside is located and is equipped with boss 5 on the shaft seal 2, the cooling channel 3 both ends are equipped with cooling tube import pipe 8 and cooling tube outlet pipe 9 and supply cooling gas, the outside is equipped with on the boss 5 and exports the outside convex spacing collar 7 of cooling tube import pipe 8 and cooling tube outlet pipe 9 recess assorted, outside convex spacing collar 7 and the recess between can play a spacing effect, can guarantee before last fastener, do not drop between cooling tube and the boss 5.

The inboard wave that appears of bearing seal 2, the inboard part of contacting with pivot 1 of bearing seal 2 is outside arc 4, and the bottom of arc 4 is arc or straight linear type of hugging closely pivot 1, and the inboard wave of bearing seal 2 is under the prerequisite of guaranteeing the contact between bearing seal 2 and the pivot 1, and the space between bearing seal 2 and the pivot 1 is increased as far as possible, increases the heat dissipation.

The cooling channel 3 is in an S-shaped bent pipe shape, the top and the bottom of the cooling channel 3 are both positioned on the inner side of the edge of the shaft seal 2, the cooling channel 3 is in an S-shaped bent pipe shape, the contact area between cooling gas and the shaft seal 2 is effectively increased, and the temperature in the shaft seal 2 is reduced.

Cooling channel 3 extends to in the boss 5, cooling tube import pipe 8 and cooling tube outlet pipe 9's diameter slightly is greater than the external diameter of boss 5, there are cooling tube import pipe 8 and cooling tube outlet pipe 9 in the 5 outsides of boss of cooling channel 3 through the fastening of fastener 11, be equipped with sealing rubber pad 6 between cooling tube import pipe 8 and cooling tube outlet pipe 9 and the fastener, guarantee the fastening of fastener to the cooling tube, cooling tube import pipe 8 is used for the cooling gas to carry, cooling tube outlet duct 9 is used for cooling down gas.

Claims

1. Gear pump bearing seal structure, including the pivot, the pivot is equipped with the bearing seal outward, its characterized in that: the inner side of the shaft seal is in arc contact with the rotating shaft, an S-shaped cooling channel is arranged in the shaft seal, a boss is arranged on the shaft seal on the outer side of the cooling channel, a cooling pipe inlet pipe and a cooling pipe outlet pipe are arranged at two ends of the cooling channel to supply cooling gas, and a limiting ring which is matched with grooves of the cooling pipe inlet pipe and the cooling pipe outlet pipe and protrudes outwards is arranged on the outer side of the boss.

2. The gear pump shaft seal structure of claim 1 wherein: the inner side of the shaft seal is wavy, and the contact part of the inner side of the shaft seal and the rotating shaft is outward arc-shaped.

3. The gear pump shaft seal structure of claim 2 wherein: the arc-shaped bottom is arc-shaped or straight and linear and clings to the rotating shaft.

4. The gear pump shaft seal structure of claim 1 wherein: the cooling channel is in an S-shaped bent pipe shape, the top and the bottom of the cooling channel are both positioned on the inner side of the edge of the shaft seal, and the cooling channel extends into the boss.

5. The gear pump shaft seal structure of claim 1 wherein: the diameters of the cooling pipe inlet pipe and the cooling pipe outlet pipe are slightly larger than the outer diameter of the boss, and the cooling pipe inlet pipe and the cooling pipe outlet pipe are fastened on the outer side of the boss of the cooling channel through fasteners.

6. The gear pump shaft seal structure of claim 5, wherein: and sealing rubber gaskets are arranged between the cooling pipe inlet pipe and the cooling pipe outlet pipe and the fasteners.