CN202991522U

CN202991522U - Chemical pump

Info

Publication number: CN202991522U
Application number: CN 201220281264
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: 2013-06-12
Anticipated expiration: 2022-06-15

Abstract

A chemical pump relates to the technical field of the structure of a centrifugal pump. A shaft sleeve is fixed on a transmission shaft behind the connection part between the transmission shaft and an impeller. A pump cover is sleeved at the front end of the shaft sleeve. A machine-sealed gland is sleeved at the back end of the shaft sleeve. The pump cover and the machine-sealed gland are fixedly connected. A mechanical seal is provided between the pump cover, the machine-sealed gland and the shaft sleeve. The outer wall of the pump cover is provided with a projected ring which is matched with an edge that is equipped at the back end of the inner chamber of the pump body. Through the design above, the defects in the prior art are settled. The chemical pump further has the following advantages: better sealing performance, no easy leakage and long service life.

Description

A kind of chemical pump

Technical field

The utility model 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 higher requirement.

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

Summary of the invention

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

The utility model 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 impeller, described base horizontal arrangement, 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 import, the pump housing of upper end for exporting 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: be fixed with axle sleeve on the transmission shaft of the rear end, joint of transmission shaft and impeller, 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, be provided with at the outer side wall of pump cover the bulge loop that matches 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.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

As shown in Figure 1, the utility model mainly is comprised of 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 impeller 10, described base 1 horizontal arrangement, 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 import, the pump housing 3 of upper end for exporting 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, be provided with at the outer side wall of pump cover 13 bulge loop 16 that matches with the seam 11 of the pump housing 3 intracavity posterior end settings.

Claims

1. 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 impeller, described base horizontal arrangement, 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 import, the pump housing of upper end for exporting 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: be fixed with axle sleeve on the transmission shaft of the rear end, joint of transmission shaft and impeller, 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, be provided with at the outer side wall of pump cover the bulge loop that matches with the seam of pump housing intracavity posterior end setting.