CN2733047Y

CN2733047Y - Single-screw pump with underslung seal

Info

Publication number: CN2733047Y
Application number: CN 200420048296
Authority: CN
Inventors: 张维昌; 韩伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-20
Filing date: 2004-04-20
Publication date: 2005-10-12
Anticipated expiration: 2014-04-20

Abstract

The utility model discloses a single-screw pump with underslung seal used for metal cutting machine, which is used for transporting cooling liquid or lube. The utility model is characterized in that a mechanical seal assembly and an isolation chamber are arranged under the lower part of the cover plate of the water tank. A still gasket ring is arranged in the thrower. The utility model has the advantages that the pump out liquid can be prevented to leak into the motor and the cover plate of the water tank to pollute the equipment. The mechanical seal assembly and the isolation chamber are arranged at the lower part of the cover plate of the water tank. The center of gravity of the pump can move downward. The vibration is reduced and is absorbed by the water tank and the medium. The noise is reduced. The durability of the pump is prolonged and the work quantity of the maintaining and the maintenance of the pump are reduced.

Description

Sealing underneath type helical rotor pump

Technical field

The utility model relates to a kind of motor-drive pump of carrying liquid.

Background technique

In the corollary equipment of metal-cutting machine tool, helical rotor pump is used to carry cooling liquid, lubricant oil, be absolutely necessary, lathe and present homemade lathe from external introduction, the helical rotor pump mechanical sealing assembly and the isolation ward that adopt are external, be located at water tank cover plate top, because mechanical seal is not zero leakage yet, leakage in various degree happens occasionally, and isolation ward is that little space, float are let out hole structure, is unfavorable for that leakage fluid effluxes, and not only influences the clean and tidy, attractive in appearance of equipment, even can influence the safe operation of motor, increased workload for the maintenance of lathe, maintenance.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of prior art, and a kind of sealing underneath type helical rotor pump is provided.

The utility model is to realize by following technological scheme.

A kind of sealing underneath type helical rotor pump comprises motor, the pump housing, and it is characterized in that: mechanical sealing assembly and isolation ward place the below of water tank cover plate; Be provided with stationary seal ring in the thrower on the motor output shaft in the isolation ward.

Advantage of the present utility model is, the liquid that mechanical seal leakage goes out returns in the water tank through isolation ward, thrower, water dumping hole, prevents that it from leaking into outside the water tank, causes equipment pollution, can also prevent that leakage fluid from entering motor; Mechanical seal, isolation ward place under the water tank cover plate, the whole center of gravity of pump is moved down, upper and lower half weight configuration is tending towards reasonable, transmission is stable, vibration is alleviated and is absorbed by water tank and medium more, reduces noise, improves working conditions, help prolonging the working life of pump, can reduce maintenance, the maintenance workload of pump.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model isolation ward place partial structurtes schematic representation.

Fig. 3 is existing helical rotor pump structural representation.

Fig. 4 is an existing helical rotor pump isolation ward place partial structurtes schematic representation.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

As depicted in figs. 1 and 2, motor 1 is contained on the water tank cover plate 10, and motor 1 is by motor output shaft 12, and universal rotatingshaft 2 drives pump rotor 3, with elastomer stator 4 work, liquid by import 15, is gone into the pump housing 5, and pump is delivered to through pipeline and used the liquid point to exporting 16 again.The pump housing 5 upper ends under the water tank cover plate 10 are provided with isolation ward 8, motor output shaft 12 is provided with thrower 7 in the isolation ward 8, stationary seal ring 9 is housed in the thrower 7, prevent that liquid is along going here and there on the motor output shaft 12 to motor 1, the effect of thrower 7 and stationary seal ring 9 be will seal in liquid barrier in the isolation ward 8, because isolation ward 8 is an open type, can make the liquid that leaks out in the 13 smooth and easy reflux tanks of water dumping hole; Mechanical sealing assembly 6, thrower 7, stationary seal ring 9 are located on the motor output shaft 12, and mechanical sealing assembly 6 places the base plate 14 times of isolation ward 8.This structure experimental results show that reliable operation, and using effect is good.

Claims

1, a kind of sealing underneath type helical rotor pump comprises motor (1), the pump housing (7), it is characterized in that: mechanical sealing assembly (6), isolation ward (8) place the below of water tank cover plate (10).

2,, it is characterized in that being provided with stationary seal ring (9) in the thrower (7) on the motor output shaft (12) in the isolation ward (8) according to the described sealing underneath type of claim 1 helical rotor pump.