CN215979869U

CN215979869U - Gear pump body structure

Info

Publication number: CN215979869U
Application number: CN202121730389.7U
Authority: CN
Inventors: 黄建明; 杨超
Original assignee: Goode Hydraulic Technology Jiangsu Co ltd
Current assignee: Goode Hydraulic Technology Jiangsu Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-03-08
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a gear pump body structure, which comprises a pump body (1), an end cover, a gear and a driving motor, wherein both ends of the pump body (1) are respectively provided with a suction inlet (2) and a discharge outlet (3). The suction inlet (2) is connected with the suction pipe (4) through an inlet flange (14), and the pressure outlet (3) is connected with the outlet pipe (5) through an outlet flange (15); an inlet electromagnetic valve (16) and a cleaning port (6) are sequentially arranged on the suction pipe (4) according to the flowing sequence of hydraulic oil, a cleaning pipe (7) is arranged on the cleaning port (6), the cleaning pipe (7) is communicated with a cleaning box (9), and a cleaning electromagnetic valve (8) is arranged on the cleaning pipe (7); the inner wall of the pump body (1) is provided with an HDPE layer (12). The utility model realizes the flushing function by adopting the oil absorption and pressure oil principle of the gear pump, controls the cutoff of the cleaning liquid by the cleaning electromagnetic valve, and is simple and efficient. The utility model improves the cleanliness of the pump body and improves the quality of hydraulic oil delivery.

Description

Gear pump body structure

Technical Field

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

Background

When the gear pump is used, the gear pump is difficult to avoid the influence of residual hydraulic oil adsorbed on the inner wall of the pump body of the gear pump on the quality of the conveyed hydraulic oil.

CN108035876A discloses a gear pump with quick flush function, the welding of the top middle part of its casing has the scavenge pipe, and the surface of scavenge pipe is provided with the valve, and the scavenge pipe is kept away from the one end fixedly connected with force (forcing) pump of valve, and in will clear liquid follow scavenge pipe rush-in casing through the force (forcing) pump, the realization is washd driving gear, driven gear and casing inside, but it does not set up the HDPE layer at the casing inner wall, and resistant oily effect is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gear pump body structure which has relatively good oil resistance effect and can improve the quality of hydraulic oil conveying.

In order to solve the technical problems, the utility model provides a gear pump body structure which comprises a pump body, an end cover, a gear and a driving motor, wherein both ends of the pump body are respectively provided with a suction inlet and a pressure outlet. The suction inlet is connected with a suction pipe through an inlet flange, and the extrusion outlet is connected with an outlet pipe through an outlet flange; an inlet electromagnetic valve and a cleaning port are sequentially arranged on the suction pipe according to the flowing sequence of hydraulic oil, a cleaning pipe is arranged on the cleaning port and communicated with a cleaning box, and a cleaning electromagnetic valve is arranged on the cleaning pipe; the pump body inner wall sets up HDPE polyethylene layer.

Furthermore, the HDPE polyethylene layer is attached to the gear tooth crest.

Furthermore, a cleaning liquid is arranged in the cleaning box and used for cleaning the inner wall of the pump body.

Furthermore, an end cover is arranged on the cleaning box. The cleaning box is matched with the end cover in a step shape.

Further, the inlet electromagnetic valve, the cleaning electromagnetic valve and the driving motor are connected with an external PLC controller.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model adopts HDPE inner wall, has strong oil resistance, good flexibility and good chemical stability, and reduces the hydraulic oil residue on the inner wall of the pump body.

2. The utility model realizes the flushing function by adopting the oil absorption and pressure oil principle of the gear pump, controls the cutoff of the cleaning liquid by the cleaning electromagnetic valve, and is simple and efficient. The gear rotates, the oil suction cavity sucks cleaning liquid, the cleaning liquid is transmitted to the oil pressing cavity through the gear, and the cleaning liquid flows through the oil suction cavity, the inner wall of the pump body and the oil pressing cavity to finish cleaning, so that the cleanliness of the pump body is improved, and the quality of conveyed hydraulic oil is improved.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

FIG. 2 is a schematic view showing the connection between the cleaning tube and the cleaning tank according to the present invention.

FIG. 3 is a schematic view of the structure of the cleaning tank of the present invention.

In the figure, 1, a pump body, 2, a suction inlet, 3, a pressure outlet, 4, a suction pipe, 5, an outlet pipe, 6, a cleaning port, 7, a cleaning pipe, 8, a cleaning electromagnetic valve, 9, a cleaning box, 12, an HDPE (high-density polyethylene) layer, 13, an end cover, 14, an inlet flange, 15, an outlet flange, 16, an inlet electromagnetic valve, 18, a tooth crest and 19 cleaning liquid.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, the gear pump body structure comprises a pump body 1, an end cover, a gear and a driving motor. The pump body 1 is provided with a suction port 2 and a discharge port 3 at both ends thereof. The suction inlet 2 is connected to the suction pipe 4 via an inlet flange 14, and the discharge outlet 3 is connected to the discharge pipe 5 via an outlet flange 15. An inlet solenoid valve 16 and a purge port 6 are provided in this order on the suction pipe 4 in the order of the flow of the hydraulic oil. The inner wall of the pump body 1 is provided with an HDPE (high-density polyethylene) layer 12, the HDPE polyethylene layer 12 is strong in oil resistance, good in flexibility and good in chemical stability, and the hydraulic oil residue on the inner wall of the pump body is reduced. The HDPE polyethylene layer 12 conforms to the crests 18 of the gear teeth.

As shown in FIG. 2, a cleaning pipe 7 is provided on the cleaning port 6, the cleaning pipe 7 communicates with a cleaning tank 9, and a cleaning solenoid valve 8 is provided on the cleaning pipe 7. A cleaning liquid 19 is provided in the cleaning tank 9.

As shown in fig. 3, the cleaning tank 9 is provided with an end cover 13, and the cleaning tank 9 is engaged with the end cover 13 in a step shape.

The inlet electromagnetic valve 16, the cleaning electromagnetic valve 8 and the driving motor are connected with an external PLC controller, the cleaning process is controlled through digital operation, the real-time performance is good, and the operation precision is high.

When cleaning, the inlet electromagnetic valve 16 is closed, the cleaning electromagnetic valve 8 is opened, the driving motor is started, the gear starts to rotate, the volume of the space on the gear disengagement side is increased from small to large, a vacuum oil suction cavity is formed, cleaning liquid is sucked into the oil suction cavity, the volume of the space on the gear engagement side is decreased from large to small, an oil pressing cavity is formed, and the cleaning liquid is squeezed into the outlet pipe 5 and flows out. The cleaning liquid flows through the oil suction cavity, the inner wall of the pump body and the oil pressing cavity and flows out from the outlet pipe 5 to finish cleaning, improve the cleanliness of the pump body and improve the quality of conveyed hydraulic oil. After the cleaning is finished, the cleaning solenoid valve 8 is closed, and the inlet solenoid valve 16 is opened, so that the next hydraulic oil transmission is prepared.

The utility model does not need a booster pump to wash, can realize the washing function by adopting the oil absorption and pressure principle of the gear pump, controls the cut-off of the washing liquid by the washing electromagnetic valve 8, and is simple and efficient.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. Gear pump body structure, including the pump body (1), the end cover, the gear to and driving motor, suction inlet (2) and extrusion mouth (3), its characterized in that are respectively established at pump body (1) both ends: the suction inlet (2) is connected with the suction pipe (4) through an inlet flange (14), and the pressure outlet (3) is connected with the outlet pipe (5) through an outlet flange (15); an inlet electromagnetic valve (16) and a cleaning port (6) are sequentially arranged on the suction pipe (4) according to the flowing sequence of hydraulic oil, a cleaning pipe (7) is arranged on the cleaning port (6), the cleaning pipe (7) is communicated with a cleaning box (9), and a cleaning electromagnetic valve (8) is arranged on the cleaning pipe (7); the inner wall of the pump body (1) is provided with an HDPE (high-density polyethylene) layer (12).

2. The gear pump body structure of claim 1, wherein: the HDPE polyethylene layer (12) is attached to the gear tooth crest (18).

3. The gear pump body structure of claim 1, wherein: and a cleaning liquid (19) is arranged in the cleaning tank (9).

4. The gear pump body structure of claim 3, wherein: an end cover (13) is arranged on the cleaning box (9).

5. The gear pump body structure of claim 4, wherein: the cleaning box (9) is matched with the end cover (13) in a step shape.

6. The gear pump body structure of claim 1, wherein: the inlet electromagnetic valve (16), the cleaning electromagnetic valve (8) and the driving motor are connected with an external PLC.