CN2286809Y

CN2286809Y - Wear-resisting thick-mud-sand pump

Info

Publication number: CN2286809Y
Application number: CN 96221779
Authority: CN
Inventors: 许***
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-10
Filing date: 1996-09-10
Publication date: 1998-07-29
Anticipated expiration: 2006-09-10

Abstract

The utility model relates to a wear-resisting thick-mud-sand pump, which is used for pumping and removing the thick-mud-sand under the liquid. The wear-resisting thick-mud-sand pump is composed of five portions: an electric motor (1), a main shaft (2), a support tube (3), a pump casing (9), and an impeller (11); the lower end of the supporting tube is a bracket (6) in the shape of an arc; the pump casing is provided with an upper slurry sucking opening (24); the upper part of the pump body is provided with a crushing feeder, and the impeller which is in the shape of a hollow disk is composed of an upper cover (12), a chassis (13), and a vertical plate (14) between the upper cover (12) and the chassis (13). The wheel edge is provided with a lateral opening; the upper side and the lower side of the pump body are provided with wear-resistant sliding bearings, and the internal wall, the impeller, and the main shaft of the pump casing are totally pressed and coated with a press-resistant liner. The wear-resisting thick-mud-sand pump which can pump the thick-mud-sand with high efficiency has the advantages of good wear-resistant performance and corrosion-resistant performance for the acid or alkali, and the service life is long.

Description

The thick shell pump of novel wear resistant

The utility model relates to centrifugal pump, mainly is meant a kind of working in below the liquid level, but pump drainage thick cement mortar is used the thick husky dredge pump of wear-resisting and acid-alkali-corrosive-resisting.

Existing common shell pump, target are to contain less, the very rare cement mortar of silt, like this, can work when the pulp absorbing hole of pump is located at pump housing bottom, but when the thick cement mortar of pump drainage, this pump can't be worked because of constructional reason; On the other hand, existing common shell pump, not wear-resisting and acid and alkali corrosion, working life is short.

The purpose of this utility model is the thick shell pump of a kind of novel wear resistant of design, and its structure and wear-resistance and anti-corrosion measure all have bigger improvement than existing shell pump, the thick cement mortar of pump drainage, and highly abrasion-resistant efficiently, acid-alkali-corrosive-resisting, long service life.

The utility model is so to implement: a kind ofly be exclusively used in the thick shell pump of novel wear resistant that the thick cement mortar of pump drainage is used under the liquid, comprise motor (1), main shaft (2), support tube (3), pump case (9) and impeller (11), be characterised in that pump case has upper shed (24); Support tube (3) termination curved support (6) down is fixed on the pump housing; Support (6) top is by adorning air-cooled sliding bearing (5), and pump housing bottom main tapping is established sliding bearing (19); Spiral knife plate (8) is welded on the main shaft of pump housing top admittedly, and Dui Ying knife plate jaw (7) is welded on the curved support (6) admittedly with it; The hollow plate-like of impeller (11), it is circular or oval to overlook its profile line, is made of loam cake (12), chassis (13) and arc riser (14) therebetween, and there is transverse opening (22) at the impeller edge, and there is vertical openings (17) at the loam cake center; Pump case inwall, impeller substrate surface and impeller spindle surface pressure dressing wear-resisting lining.

The axle bush of said wear-resisting lining and sliding bearing (5), (19) is to be made by wear-resisting, acid resistant alkali rubber, rubber and plastic or high purity graphite composite material.

The utility model is because pump case has upper shed, and the upper shed of impeller hollow dish has the board-like inlet end of circular knife above the pump housing, so make thick cement mortar be easy to enter the pump housing, finishes pumpdown; Again because of having taked surperficial pressure dressing wear resistant corrosion resistant lining, and the pump housing adorns measures such as wear-resisting, acid resistant alkali sliding bearing up and down, makes this pump have high abrasion, acid-alkali-corrosive-resisting, the thick cement mortar efficient of pumping height, long service life.

Description of drawings

Fig. 1, the utility model master pseudosection

Fig. 2, the utility model hollow impeller plan view

Fig. 3, the utility model impeller A-A sectional drawing

Fig. 4, the utility model sliding bearing (5) sectional drawing

Fig. 5, the utility model sliding bearing (19) sectional drawing

Detailed description of the present utility model and preferred embodiment merging are described below:

As shown in Figure 1, the thick shell pump of novel wear resistant is made of motor (1), main shaft (2), support tube (3), pump case (9) and impeller (11) five parts, belongs to vertical centrifugal pump.Curved support (6) electrizer that support tube (3) and lower end are affixed and the supporting role of the pump housing and main shaft.Pump case has upper shed (24), and promptly the cement mortar suction inlet designs curved support (6) around this mouth.There is crashing feeding unit pump housing top, it is formed by being welded in the spiral knife plate (8) on the main shaft admittedly and being welded in knife plate jaw (7) corresponding with it on the curved support admittedly, when knife plate (8) rotation at certain axial screw angle is arranged, on the one hand weeds, cloth, plastics and so on are pulverized between jaw, can produce axial pressure on the one hand, make thick cement mortar be easy to be fed in the pump housing, among the embodiment, spiral knife plate (8) has 2, being fixed in has three knife plate jaws (7) on 3 curved supports (6), the spiral knife plate rotates between jaw.

Pump housing impeller (11) is hollow plate-like, shown in Fig. 2,3, it is circular or oval to overlook its profile line, constitute by loam cake (12), chassis (13) and arc riser (14) therebetween, loam cake (12) has upper shed (17), and it and pump case upper shed (24) form funnel shape mortar inlet, and thick cement mortar mouth thus enters in the impeller plate, under impeller high speed rotating, centrifugal action, cement mortar will be pumped by impeller transverse opening (22), pump housing mud outlet (23).The arc riser originates in the loam cake peristome, and the impeller edge forms transverse opening (22) between the arc riser of front and back finally, and impeller is oval hollow disc in the preferred embodiment, and the arc riser is provided with two along the involute direction, forms two transverse openings.

As Fig. 1, Fig. 4, shown in Figure 5, upright pump support tube (3) has spacer flanger dish (4), flange is following for working in liquid level with the bottom, liquid is work down, common rolling bearing is incompatible, so about the pump housing, respectively by adorning air-cooled sliding bearing (5) and main tapping sliding bearing (19), air-cooled sliding bearing (5) is by main shaft (2), the axle bush (20) and the support tube (3) that apply thereon constitute, and there are spiral ridge or groove (21) in axle bush (20) surface, because of this bearing most cases is to work under liquid level, at this moment, provide lubricated by this liquid, but also expose liquid level sometimes, will generate heat because of losing liquid lubrication this moment, the effect of spiral ridge or groove, be exactly to provide air-cooled at this moment, during high speed rotating, because of the turning effort of surperficial spiral ridge or groove, to between glade plane space, produce distinguished and admirable, make bearing self cooling, among the embodiment, axle bush (20) surface design spiral ridge.Pump housing bottom main tapping, by dress sliding bearing (19), it by main shaft (2), apply thereon axle bush (20) and the pump case (9) of surface pressure lining constitute, axle bush (20) and pump case be surperficial to be served as a contrast between (10) to be glade plane space, to provide lubricated by liquid.

In order to improve the wear resistance of pump, produce the equal pressure dressing wear-resisting lining in surface of mutual friction means, they are pump case internal surface, impeller base material inner and outer surface and impeller spindle surface, all rubber, rubber and plastic or the high purity graphite composite material lining of the wear-resisting and acid resistant alkali of pressure dressing be that wear-resisting, acid resistant alkali rubber serves as a contrast among the embodiment.That the axle bush of air-cooled sliding bearing (5) and spindle nose sliding bearing (19) also adopts is wear-resisting, acid resistant alkali rubber, rubber and plastic or high purity graphite composite material lining, be that wear-resisting, acid resistant alkali rubber serves as a contrast among the embodiment.

The used motor of the utility model is the three phase squirrel cage asynchronous motor, can adopt to become the level speed governing, also can pass through the belt pulley speed change.Pump case adopts high-strength gray cast iron, and impeller, main shaft, curved support adopt 45# carbon steel.The utility model can be widely used in riverbed, mire, urban sewage system desilting, remove contamination, and also can be widely used in industries such as engineerings such as urban construction foundation engineering, tunnel culvert, subway and chemical industry, oil, metallurgy.

Claims

1, a kind ofly is used for the thick shell pump of novel wear resistant that the thick cement mortar of pump drainage is used under the liquid, comprises motor (1), main shaft (2), support tube (3), pump case (9) and impeller (11), it is characterized in that pump case has upper shed (24); Support tube (3) is termination curved support (6) down; Support (6) top is by adorning air-cooled sliding bearing (5), and pump housing bottom main tapping is established sliding bearing (19); Spiral knife plate (8) is welded on the main shaft of pump housing top admittedly, and Dui Ying knife plate jaw (7) is welded on the curved support (6) admittedly with it; The hollow plate-like of impeller (11), it is circular or oval to overlook its profile line, is made of loam cake (12), chassis (13) and arc riser (14) therebetween, and there is transverse opening (22) at the impeller edge, and there is vertical openings (17) at the loam cake center; Pump case inwall, impeller base material (15) surface and impeller spindle surface pressure dressing wear-resisting lining.

According to the thick shell pump of the described novel wear resistant of claim 1, it is characterized in that 2, air-cooled sliding bearing (5) is made of main shaft (2), deposited axle bush (20) and support tube (3) thereon, there are spiral ridge or groove (21) in axle bush (20) surface; Spindle nose sliding bearing (19), by main shaft (2), apply thereon axle bush (20) and pump case (9) formation of surface pressure lining.

3, according to claim 1 or the thick shell pump of 2 described novel wear resistants, it is characterized in that, pump case inwall, impeller substrate surface, impeller spindle surface institute's pressure dressing wear-resisting lining (10), (16), (18), and sliding bearing axle bush (20) is made by wear-resisting, acid resistant alkali rubber, rubber and plastic or high purity graphite composite material.