CN103486053A

CN103486053A - Chemical pump

Info

Publication number: CN103486053A
Application number: CN201210196859.5A
Authority: CN
Inventors: 童国华
Original assignee: JIANGSU JULANG PUMPS AND VALVES CO Ltd
Current assignee: JIANGSU JULANG PUMPS AND VALVES CO Ltd
Priority date: 2012-06-15
Filing date: 2012-06-15
Publication date: 2014-01-01

Abstract

The invention provides a chemical pump, which relates to the technical field of a structure of a centrifugal pump. A shaft sleeve is fixedly arranged on a transmission shaft arranged at the back end of a connecting part of a transmission shaft and an impeller, the front end of the shaft sleeve is sheathed with a pump cover, the back end of the shaft sleeve is sheathed with a mechanical seal press cover, the pump cover is fixedly connected with the mechanical seal press cover, a mechanical seal is arranged among the pump cover, the mechanical seal press cover and the shaft sleeve, and a convex ring matched with a limiting slot formed at the back end of an inner cavity of the pump body is arranged on the outer side wall of the pump cover. Through the design, the defects in the prior art are overcome, the sealing performance of the chemical pump is better, the leakage cannot be easily caused, and the service life is long.

Description

A kind of chemical pump

Technical field

The present invention relates to a kind of technical field of structures of centrifugal pump.

Background technique

Chemical industry is for the consideration to safety, environmental protection, and the sealability of machinery is had to higher requirement.

Existing chemical pump, the narrow limitation due on structural design, have poor sealing performance, easily causes and leak and the shortcoming such as working life is short.

Summary of the invention

The chemical pump that the purpose of this invention is to provide a kind of good seal performance, long service life.

The present invention mainly comprises base, motor, the pump housing, transmission shaft, coupling, hitch, suspension, deep groove ball bearing, pump cover, machine sealed cover, mechanical seal, bearing cap and the impeller of horizontal arrangement, and the motor horizontal arrangement is on the right side of base; Motor is connected with transmission shaft by coupling, and the front end of transmission shaft is fixedly connected with impeller, and it is the pump housing that import, upper end are outlet that chassis left side is fixedly connected with front end, and impeller is placed in the pump housing, and pump housing intracavity posterior end is provided with seam; It is characterized in that: on the transmission shaft of the rear end, joint of transmission shaft and impeller, be fixed with axle sleeve, the front end sleeve of axle sleeve is equipped with pump cover, the rear end of axle sleeve is nested with organic sealed cover, pump cover is fixedly connected with the machine sealed cover, be provided with mechanical seal between pump cover, machine sealed cover and axle sleeve, at the outer side wall of pump cover, be provided with the bulge loop matched with the seam of pump housing intracavity posterior end setting.

By above design, solved the shortcoming of prior art, its sealability is better, is not easy to cause to leak and long service life.

The accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Embodiment

As shown in Figure 1, the present invention is mainly by base 1, motor 2, the pump housing 3, transmission shaft 4, coupling 5, hitch 6, suspension 7, deep groove ball bearing 8, pump cover 13, machine sealed cover 14, mechanical seal 15, bearing cap 9 and the impeller 10 of horizontal arrangement, and motor 2 horizontal arrangement are on the right side of base 1.

Motor 2 is connected with transmission shaft 4 by coupling 5, and the front end of transmission shaft 4 is fixedly connected with impeller 10, and it is the pump housing 3 that import, upper end are outlet that base 1 left side is fixedly connected with front end, and impeller 10 is placed in the pump housing 3, and the pump housing 3 intracavity posterior ends are provided with seam 11.

Be fixed with axle sleeve 12 on the transmission shaft of the rear end, joint of transmission shaft 4 and impeller, the front end sleeve of axle sleeve 12 is equipped with pump cover 13, the rear end of axle sleeve 12 is nested with organic sealed cover 14, pump cover 13 is fixedly connected with machine sealed cover 14, be provided with mechanical seal 15 between pump cover 13, machine sealed cover 14 and axle sleeve 12, at the outer side wall of pump cover 13, be provided with the bulge loop 16 matched with the seam 11 of the pump housing 3 intracavity posterior end settings.

Claims

1. a chemical pump, mainly comprise base, motor, the pump housing, transmission shaft, coupling, hitch, suspension, deep groove ball bearing, pump cover, machine sealed cover, mechanical seal, bearing cap and the impeller of horizontal arrangement, and the motor horizontal arrangement is on the right side of base; Motor is connected with transmission shaft by coupling, and the front end of transmission shaft is fixedly connected with impeller, and it is the pump housing that import, upper end are outlet that chassis left side is fixedly connected with front end, and impeller is placed in the pump housing, and pump housing intracavity posterior end is provided with seam; It is characterized in that: on the transmission shaft of the rear end, joint of transmission shaft and impeller, be fixed with axle sleeve, the front end sleeve of axle sleeve is equipped with pump cover, the rear end of axle sleeve is nested with organic sealed cover, pump cover is fixedly connected with the machine sealed cover, be provided with mechanical seal between pump cover, machine sealed cover and axle sleeve, at the outer side wall of pump cover, be provided with the bulge loop matched with the seam of pump housing intracavity posterior end setting.