CN2285838Y

CN2285838Y - Non-clogging single-stage double-suction centrifugal pump

Info

Publication number: CN2285838Y
Application number: CN 96232846
Authority: CN
Inventors: 刘向东; 陆伟刚
Original assignee: Individual
Current assignee: Liu Xiangdong; Lu Weigang
Priority date: 1996-03-20
Filing date: 1996-03-20
Publication date: 1998-07-08
Anticipated expiration: 2006-03-20

Abstract

The utility model relates to a non-clogging single-stage double-suction centrifugal pump, which is used for conveying sewage, dirt and solid particles. The water pump of the utility model is provided with a special double-suction single channel impeller; a channel and only one channel is respectively arranged from the two inlets to the two outlets of the impeller; the sewage, the dirt and the solid particles entering the two inlets of the impeller can smoothly flow out of the impeller, and can not be clogged in the impeller. The utility model is especially suitable for the manufacture of a submersible electric pump and an underliquid pump, and can be used for manufacturing single-stage double-suction centrifugal pumps arranged on the ground. The submersible electric pump and the underliquid pump which are manufactured by the utility model have high non-clogging performance, high efficiency, stable operation, operational safety and low manufacture cost.

Description

There is not the single-stage double-suction of obstruction centrifugal pump

The utility model is a kind of novel water pump of carrying sewage dirt and solid particle that is applicable to.The utility model is specially adapted to the manufacturing of submersible pump and Under Water Pumps, also can be used to make surface-based single-stage double-suction centrifugal pump.

Traditional single-stage double-suction centrifugal pump, its impeller are to adopt two single suction impellers, and the method for Bu Zhiing designs back-to-back.Visually this impeller can be described with the following method: if with a plane with axis normal, the place that equates at two suction ports of distance double-entry impeller cuts in half impeller, and then a double-entry impeller has just become two single suction impellers.The defective of this impeller is that many pieces of blades are arranged in the impeller, extend to two inlets of impeller always, during with its conveying large particle especially long fibre two-phase fluid, be easy on the impeller inlet limit, be that the runner turnoff is wound and blocks, so traditional single-stage double-suction centrifugal pump is not suitable for carrying sewage dirt.

The purpose of this utility model provides a kind of single-stage double-suction centrifugal pump of the conveying large particle that is applicable to, especially long fibre two-phase fluid.It has overcome traditional single-stage double-suction centrifugal pump and has been twined and the defective of stopping up by the long fibre type objects in the sewage dirt because of leaf turn of tidal stream road fork, the advantage that has promptly kept the double suction pump axial force balance, again can be as the single suction Procedure of Single-channel Pump, be applicable to the conveying large particle, especially long stapled two-phase fluid.

The utility model is to adopt following method to realize.

Adorn a double suction single blade impeller in the pump housing of a single-stage double-suction centrifugal pump, impeller links by an impeller shaft and a prime mover that links with prime mover.The double suction single blade impeller of dress has two suction ports, two outlets in the pump housing.Two suction ports arrange back-to-back, two outlets, the 180 ° of layouts that interlace.Respectively have one and have only a runner from two outlets of two these impellers that enter the mouth of this impeller, two runners are not connected in impeller inside.It is to adopt two single suction single blade impellers, the 180 ° of methods that are embedded in mutually together that interlace to design.When sewage dirt and solid particle enter water pump, no matter from which inlet by impeller channel, can not be wound and block because of the turnoff, therefore will be got water pump swimmingly.What give the impeller shaft transmitting power can be that submersible motor, vertical machine, horizontal machine or other can convert the dynamic power machine that rotatablely moves to.

The utility model compared with prior art has following good effect:

1. compare with traditional single-stage double-suction centrifugal pump, the utility model is owing to have only a runner from the import of impeller separately to outlet, and runner middle barrier and fork without any entrance edge of blade are so contain the two-phase fluid of large particle and long fibre object than traditional multiple-blade single-stage double-suction centrifugal pump conveying preferably.

2. stop up single suction single channel water pump with traditional nothing and compare, the utility model has been owing to adopted double-entry impeller and two single channel symmetric arrangement, thereby makes the axial force automatic balancing of water pump, and the radial force autobalance improves the reliability of water pump greatly.

Preferred embodiment of the utility model is to make not have the single-stage double-suction Submerged Motor Pumps of obstruction and Under Water Pumps.Below in conjunction with accompanying drawing implementation methods is described further:

Fig. 1 does not have the single-stage double-suction of obstruction Submerged Motor Pumps sketch

Impeller [1] is contained within the pump housing [8], connects together by axle [6] and submersible motor [5].Impeller [1] has inlet [4], [9] two inlets of inlet and outlet [2], [7] two outlets of outlet.Have only a runner from inlet [4] to outlet [2], also have only a runner from inlet [9] to outlet [7], these two runners are not connected in impeller inside.It is right to use, two inlets of the pump housing and impeller all are immersed in the pond, the sewage dirt that enters impeller eye [4] or inlet [9] will be got in the pump housing along single channel separately, get delivery side of pump [3] along pump housing runner again, again along with the pipeline that links together of outlet [3], be transported to the place that needs and go.

The utility model is used for making Under Water Pumps, and two inlets of its impeller also are immersed in the pond.The utility model is used for making surface-based single-stage double-suction pump, and then two of impeller inlets can be got the sewage dirt intake impeller outside the pump housing by suction line during running more than the water surface again.

Claims

1. one kind is applicable to the nothing obstruction single-stage double-suction centrifugal pump of carrying sewage dirt and solid particle, it has a pump housing, an impeller and an impeller shaft that links with prime mover that is contained in the pump housing, it is characterized in that: the impeller in the pump housing is a double suction single blade impeller, respectively have one and have only a runner from two outlets of two these impellers that enter the mouth of this impeller, two runners are not connected in impeller inside.