CN2314105Y

CN2314105Y - Pump for underground reservoir

Info

Publication number: CN2314105Y
Application number: CN 97232743
Authority: CN
Inventors: 张书功; 张训志; 张燕
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-18
Filing date: 1997-04-18
Publication date: 1999-04-14
Anticipated expiration: 2007-04-18

Abstract

The utility model relates to a pump for an underground reservoir, comprising a motor and a multistage centrifugal pump. The utility model is characterized in that the multistage centrifugal pump is divided into an upper and a lower portions, the upper part is a main pump, the lower part is an auxiliary pump, and the main pump is connected with the auxiliary pump through a connecting pipe piece. The utility model has the advantage of convenient operation, and particularly has convenience and reliability for pumps which need starting constantly. The pump can realize that the number of different lifts in pump series is increased under the condition of no increasing the stage number of the pump, creates convenient conditions for people who use the pump, and can also realize the purposes of reducing the stage number of each pump and reducing the manufacturing cost of the pump by keeping the condition that the lift between the pumps in the pump series is not changed.

Description

The underground reservoir pump

The utility model belongs to a kind of multistage centrifugal pump, particularly a kind of pump of lower liquid pool exclusively that is used for carrying underground reservoir liquid.

At present, industrial and mining enterprise, urban construction and domestic life feedwater all will be provided with groundwater supply pond and water pump, have following two kinds on the mounting type; A kind of is self filling type, and pump is contained in the side of liquid pool, and this mounting type can make liquid enter automatically in the pump, does not need any device promptly reliable, but must build underground pump house, and floor space is bigger, and expense is higher; Another kind is the formula of sucting, pump is installed in the top of liquid pool, though floor space reduces, but must bottom valve be set in the suction sleeve bottom, to in pump, fill liquid before the turn on pump, therefore need establish in addition to irritate liquid device or vacuumize and draw liquid, thereby reduce the reliability and the convenience of drawing liquid with vacuum pump, more unfavorable for the pump that needs frequent starting.

The purpose of this utility model provides a kind of underground reservoir pump, is installed in the top of underground reservoir, does not need to repair underground pump house, does not need to irritate liquid or vacuumize, and pump just can normally start, and is easy to use, and is especially more convenient reliable for the pump of need frequent starting.Realize that simultaneously each single-stage lift changes in the multistage pump, like this can be in keeping the series of original pump, under the constant condition of lift difference, realize reducing the progression of each pump between each pump, promptly reduce the amount of parts of pump, reduce the manufacture cost of pump.

The purpose of this utility model is achieved in that it comprises motor, multistage centrifugal pump, and its technological scheme main points are: multistage centrifugal pump is divided into upper and lower two-part, and top is main pump, and the bottom is auxilliary pump; Main pump connects auxilliary pump by connection pipe fitting.During installation, main pump is installed in the top of liquid pool, and auxilliary pump just reaches the bottom of liquid pool, realizes that the self filling type of pump is installed effect, guarantees to exhaust the liquid in the pond.Main pump and auxilliary pump move simultaneously, and auxilliary pump is sent into the liquid that gravity flow enters in the auxilliary pump in the main pump, and main pump is sent to the destination with liquid by delivery line after liquid is done work.

Be connected shared pump shaft between above-mentioned main pump and the auxilliary pump, a motor is set.

Above-mentioned main pump and auxilliary pump are provided with pump shaft respectively, and the motor of single driving is set separately.

Above-mentioned main pump impeller outer diameters at different levels are unequal external diameter, and promptly each single-stage of pump is that flow equates and lift is unequal.

The utility model has the advantages that: pump is installed in the top of underground reservoir, does not need to build underground pump house, saves floor occupying area, and does not need to be provided with the supplementary equipment of " sucting formula " required installation, and the reduction expense is easy to use, rational in infrastructure.Because impeller diameters at different levels can be unequal, can not increase under the level said conditions of pump simultaneously, increase the quantity of different lifts in the pump series, promptly reduce the lift difference between the pump, created the condition that makes things convenient for, can save the operating cost of pump with the pump person.Also can be in keeping pump series between each pump under the constant affair part of lift difference, reduce the progression of each pump itself, reduce the manufacture cost of pump, reduce the height of vertical pump, increased stability, reduced the length of horizontal pump, the floor space of minimizing pump.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model embodiment 1 structural representation.

Fig. 2 is the utility model embodiment 2 structural representations.

See Fig. 1, embodiment's 1 concrete structure is as follows: assembling both stage impellers 3 in the main pump 4 of drag-out mouth 1, and pump is taken out the output shaft that 5 one ends connect motor 2; Have the auxilliary pump 8 interior assembling one-level impellers of liquid entering hole 10, auxilliary pump 8 is an axis with the pump shaft of main pump 4, is linked to be an integral body by connection pipe fitting 6 between main pump 4 and the auxilliary pump 8, and pump shaft 5 passes from connection pipe fitting 6.This kind structure is specially adapted to the pond and uses less than 3.5 meters liquid pool deeply.Impeller diameter in the main pump 4 is respectively 160mm and 200mm, and promptly single-stage lift is respectively 32 meters and 50 meters, and the impeller diameter of auxilliary pump 8 is 125mm, and single-stage lift is 20 meters, and the total thing journey of this pump is 102 meters.Main pump 4 is installed in the pond and covers, because the liquid flow path (connection pipe fitting) between main pump 4 and auxilliary pump 8 is long, auxilliary pump 8 can reach the bottom of liquid pool 7.During motor 2 work, drive main pump 4 and auxilliary pump 8 and work simultaneously, the liquid in the pond is sent into liquid in the main pump 4 by connection pipe fitting 6 by auxilliary pump 8 from the liquid entering hole 10 that is advanced into auxilliary pump 8, further pressurize by main pump 4 again, enter in the pipeline of destination by liquid outlet 1 then.

See Fig. 2, embodiment's 2 concrete structures are as follows: main pump 4 is lifted on the top of following, the liquid pool of Chi Gai, main pump 4 and auxilliary pump 8 are provided with pump shaft respectively, be connected by connection pipe fitting 6 between main pump 4 and the auxilliary pump 8, this main pump 4 and auxilliary pump 8 all are installed on mounting type in the liquid pool, can be implemented in the winter of north cold, the condition lower pump body of not building pump house can not be damaged by frost yet.Main pump 4 usefulness general-purpose machine 2a drive, and auxilliary pump 8 usefulness subduction motor 2b drive, and this motor configuration mode is suitable for the applications of dark (greater than 4 meters) of liquid pool most.Because main and auxiliary pump is furnished with motor 2a, 2b separately, main and auxiliary pump can also be horizontal.Establish three grades of impellers 3 in the main pump 4, it is 40 meters that two single-stage lift are wherein arranged, and a single-stage lift is 30 meters, and two impeller 9 single-stage lift of auxilliary pump all are 6.5 meters, so this lift of pump is 123 meters.

The utility model in a multistage pump, has adopted two or more different single-stage lift in the series of some flows, just adopt identical and the impeller that single-stage lift is different of flow.Owing to the impeller diameter difference, also just there is the difference of lift between them.The utility model is exactly to utilize the difference of this single-stage lift to realize reducing the progression of pump or the difference that reduces lift between the pump.Be that example further specifies with main pump among Fig. 2 now, main pump is to be respectively 30 meters and 40 meters triplexes that two kinds of impellers are formed with single-stage lift.Traditional design is the triplex of 30 meters * 3=90 rice lift, and enlarging a kind of again is the triplex that 40 meters * 3=120 rice is raised mutually.The utility model can also mix forms 30 meters * 2+40 rice=100 meters and two kinds of triplexes of 30 meters+40 meters * 2=110 rice, has increased by two kinds of pumps again with different single-stage lift.More than lift difference between four triplexes all be 10 meters, the difference of 30 meters of single-stage lift and 40 meters just.If will obtain to differ from 10 meters lifts between each pump with traditional method, have to design single-stage lift and be 10 meters multistage pump, realize that 120 meters lift is wanted 12 grades.And this example has only used three grades promptly to realize, 40 meters and 30 meters of 80 meters, 70 meters, 60 meters single-stage pumps of two stage pump in addition.

Claims

1, a kind of underground reservoir pump, it comprises motor, multistage centrifugal pump, it is characterized in that: multistage centrifugal pump is divided into upper and lower two-part, and top is main pump, and the bottom is auxilliary pump; Main pump connects auxilliary pump by connection pipe fitting.

2, underground reservoir pump according to claim 1 is characterized in that: be connected it between main pump and the auxilliary pump and use pump shaft, a motor is set.

3, underground reservoir pump according to claim 1 is characterized in that; Main pump and auxilliary pump are provided with pump shaft respectively, and the motor of single driving is set separately.

4, the underground reservoir pump of being confused according to claim 1 is characterized in that: main pump impeller outer diameters at different levels are unequal external diameter.