CN2285837Y

CN2285837Y - Vacuum priming self-suction centrifugal pump

Info

Publication number: CN2285837Y
Application number: CN 96201830
Authority: CN
Inventors: 张法祝
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-06
Filing date: 1996-01-06
Publication date: 1998-07-08
Anticipated expiration: 2006-01-06

Abstract

The utility model relates to a vacuum-priming self-sucking centrifugal pump, which is suitable for farm irrigation, residents' living, fire-fighting water supply, etc. The utility model comprises a motor and a motor shaft, and is characterized in that a composite impeller is arranged on the end head of a pump shaft; a self-sucking pump body and a centrifugal pump body are respectively arranged at the left and the right sides of the composite impeller; the self-sucking pump body is connected with the centrifugal pump body via a flange disk; a left and a right water tanks are arranged above a self-sucking pump; a check valve is arranged on a water outlet pipe of the centrifugal pump body. The utility model has the advantages of favorable self-sucking effect, great flow rate, high efficiency, simple structure, low manufacturing cost, etc; the utility model can automatically suck water in a short time, relieving the troubles of artificial pump priming and the installation of a bottom valve.

Description

The vacuum water diversion self-priming centrifugal pump

The utility model relates to a kind of self-priming centrifugal pump, is applicable to field irrigation, resident living, fire fighting supply etc.

The vacuum water diversion self-priming centrifugal pump that existing State Patent Office is authorized, the patent No. 90210064.5, it comprises motor and centrifugal pump, it is characterized in that: the vacuum water diversion level is housed in the end of centrifugal pump shaft, centrifugal level and the coaxial running of diversion level, and connect with pipeline and solenoid valve between diversion level and the centrifugal level, its shortcoming is: owing to being is to connect with pipeline and solenoid valve between the diversion level is with centrifugal grade, so complex structure, flow is little.

Task of the present utility model is that proposition is a kind of simple in structure, cheap, can satisfy the water-feeding type vacuum water diversion self-priming centrifugal pump of big flow.

Task of the present utility model is finished like this, it comprises motor, motor shaft, it is characterized in that: composite impeller is contained in the termination of pump shaft, composite impeller is to be formed by stacking up and down by centrifugal wheel and self-priming gear, about composite impeller the self-priming pump housing and centrifugal pump body, connect with flange plate between the self-priming pump housing and the centrifugal pump body, there is the left and right sides water tank self-priming pump top, safety check is equipped with on the centrifugal pump body outlet pipe and self-priming pump housing outlet pipe intersection, before safety check is contained in the joint of centrifugal pump outlet pipe and right water tank.

The utlity model has following effect: self-priming is effective, can absorb water automatically at short notice, has removed artificial pump priming from, and the trouble of bottom valve is installed, and have that flow is big, efficient is high, simple in structure, advantage such as cost of production is low.

Fig. 1 is the structural representation of the utility model vacuum water diversion self-priming centrifugal pump;

Fig. 2 is the right elevation of the utility model vacuum water diversion self-priming centrifugal pump;

Fig. 3 is the right elevation of the self-priming pump housing;

Fig. 4 is the sectional view of composite impeller;

Fig. 5 is the structural representation of centrifugal wheel;

Fig. 6 is the structural representation of self-priming gear;

Fig. 7 is the right elevation of centrifugal pump body.

Describe embodiment in detail in conjunction with above accompanying drawing, know between the self-priming pump housing 5 and the centrifugal pump body 7 by flange plate 13 connections by Fig. 1, composite impeller is between two pump housings, and be installed in the front end of pump shaft 4, by water seal combination 3 sealings, composite impeller is to be formed by stacking up and down by centrifugal wheel 21 and self-priming gear 22, connects with pump shaft 4 with bolt between the pump shaft 4 and the self-priming pump housing 5, with locking nut 10 lockings, such connecting mode can be adjusted the axial clearance of self-priming gear 22 and the self-priming pump housing 5 water retaining rings easily.Know that by Fig. 3 there is left water tank 16 the self-priming pump housing 5 tops, left safety check 14 and right safety check 15 (see figure 2)s are housed on the tank wall of right water tank 20 and right water tank.Left side safety check can stop the liquid return in the pipeline when water pump quits work, and provides convenience for starting once more.Water or air circulation when centrifugal wheel 21 was not worked when right safety check 15 can stop vacuum water diversion in the right water tank 20 are gone into the pump housing.Centrifugal pump body outlet pipe 12 and centrifugal pump body communicate through centrifugal impeller 21 with pumping chamber 8, communicate through the right water tank 20 on safety check 15 and the self-priming pump, be connected on the right water tank 20 by flange plate 24, left side water tank 16 is logical by the water of total water inlet 2 and low liquid level, communicate by water intake on the self-priming pump housing 5 17 and self-priming pump housing pumping chamber 6, centrifugal pump body water pipe 11 and centrifugal pump body pumping chamber 8 communicate, self-priming pump backwater mouth 19 and right water tank 20 communicate, self-priming pump housing pumping chamber 6 is in the process of diversion, the water of 20 li parts of right water tank can be got back to left water tank 16 by self-priming pump backwater mouth 19, self-priming pump housing water outlet 18 communicates with right water tank 20 and self-priming pump housing pumping chamber 6, in the pump working process, the high pressure water of two pump housing pumping chambers converges by total water outlet 1 at right water tank 20 discharges.

The utility model is before startup, should there be a spot of water in two water tanks about on the self-priming pump housing 5, centrifugal wheel 21 in the moment that starts in the composite impeller 9 is got rid of the water in it in right water tank 20 by centrifugal pump outlet pipe 11, no-load idle running, and self-priming gear 22 is pressed into right water tank 20 with the air of left water tank 16 through self-priming pump pumping chamber 6 continuously, discharged by total water outlet 1, the air in pipeline has all been arranged.The water of low liquid level has been full of the whole suction line and the pump housing when having arranged gas, at this moment, centrifugal wheel 21 is started working, after water absorption course is finished, self-priming gear 22 and centrifugal impeller 21 on the composite impeller 9 are worked simultaneously, and the two-wheeled parallel connection is gone into right water tank 20 with the hydraulic pressure of left water tank 16, by total water outlet 1 ejection, under the negative pressure of vacuum effect, the water of low liquid level enters left water tank 16 continuously by suction sleeve simultaneously.

Claims

1, vacuum water diversion self-priming centrifugal pump, it comprises motor, motor shaft, it is characterized in that: composite impeller is contained in the termination of pump shaft, about it self-priming pump housing and centrifugal pump body, connect with flange plate between the self-priming pump housing and the centrifugal pump body, there is left and right water tank the self-priming pump top, on the centrifugal pump body outlet pipe safety check is housed.

2, vacuum water diversion self-priming centrifugal pump according to claim 1 is characterized in that: composite impeller is to be formed by stacking up and down by centrifugal wheel and self-priming gear, before safety check is contained in the joint of centrifugal pump outlet pipe and right water tank.