CN2308748Y

CN2308748Y - Underwater pump

Info

Publication number: CN2308748Y
Application number: CN 97217986
Authority: CN
Inventors: 吴春根
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-08-07
Filing date: 1997-08-07
Publication date: 1999-02-24
Anticipated expiration: 2007-08-07

Abstract

The utility model relates to a submersible pump, particularly a high-pressure deep-well multi-stage submersible pump which is composed of a motor and a water pump, wherein, a shaft of the water pump and a motor shaft are coaxial; the water pump and the motor rotate in a shaft coupling mode; a pump body is fixedly arranged on a motor body; an impeller arranged on the shaft of the water pump is a multi-stage tandem impeller. The utility model has the advantages of difficult abrasion, favorable mechanical sealing performance, small size, high lift, simple installation, convenient operation, and can be widely used for deep-well operation.

Description

Submersible pump

The utility model relates to the pump technology field that is used for heavy duty service, is a kind of high pressure and deep well Multiple Sinking Pump.

Existing submersible pump technological development is rapider, past often adopts motor to drive pump working by belt pulley, and because during heavy duty service, pressure is bigger, particle such as sand is more in the deep-well, impeller to water pump produces wearing and tearing easily, and has a strong impact on the normal operation of water pump, very is unfavorable for heavy duty service.At these situations, people have developed many new submersible pumps: the patent No. of examining as Patent Office of the People's Republic of China is 87202696 small submersible pump, because it uses power less, only is adapted to shallow water operations, as is used for fountain etc.; The Submerged Motor Pumps of the Decree of Patent Office of China (notification number is 2054498) and for example, the sealing bell jar is equipped with in the main Submerged Motor Pumps outside of common electric machine of adopting, and sealing technique such as 3 to 5 road seal rings is housed on pump shell, and its structure is complicated, by drainings such as impeller, capsules, its lift is lower; The Chinese patent of the anti-silt submersible pump of notification number 2167220 mainly is equipped with anti-silt filter on the casing of pump shaft upper end for another example, is equipped with on the pump shaft and gets rid of sand spare, gets rid of the end face of sand spare applying labyrinth cap, and its structure and installation are complicated, and heavy.In a word, these submersible pump power are lower, are unfavorable for heavy duty service.

The purpose of this utility model is to provide a kind of power higher at above-mentioned situation, and lift is far away, and sealability is submersible pump preferably.

The purpose of this utility model realizes in the following manner: a kind of submersible pump, to form by motor and water pump two-part, and motor includes motor body, stator, rotor assembly, motor shaft; Water pump includes water pump spindle, the pump housing and impeller; Water pump spindle and motor shaft are the week axle, and water pump and motor are that shaft coupling rotates; On the pump housing fixed installation motor body; The impeller that is installed on the water pump spindle is the plural serial stage impeller.

Submersible pump of the present utility model owing to adopt multi-stage impeller to come supercharging, has characteristics such as the lift high power is big; Impeller has performances such as not easy to wear; The utility model also has characteristics such as mechanical sealing performance is good, and volume is little, installs simply, and is easy to use.

Describe technology contents of the present utility model and structure characteristic thereof in detail below in conjunction with accompanying drawing;

Accompanying drawing is a structural representation of the present utility model.

Referring to accompanying drawing, submersible pump of the present utility model is made up of motor (1) and water pump (2).Motor (1) includes motor body (11), stator (12), rotor assembly (13) and motor shaft (14); Rotor assembly (13) is positioned on the motor shaft (14), and stator (12) is positioned on the motor body (11), this part structure and existing motor basically identical.Motor shaft (14) is installed on the motor body (11) by metal (upper (15) and (15), the motor body is the type body of sealing, top has motor axis hole, on it has, in, following three die cavities, stator (12), rotor assembly (13) and electromagnetic wire (16) are positioned in the intermediate cavity, be equipped with the capacitor (17) that links to each other with electromagnetic wire (16) in the die cavity of bottom, be equipped with motor shaft Sealing (18) in the die cavity of top, Sealing (18) is positioned at the motor axis hole place, to prevent that water part from penetrating into motor internal, damage motor, motor power-supply wire adopts high quality, the electric wire of high sealing performance.Water pump (2) includes water pump spindle (21), the pump housing (22), reaches impeller (23), and impeller is fixedly mounted on water pump spindle (21) and goes up and be contained in the pump housing (22), and the pump housing adopts cylindrical drum.Water pump spindle (21) is coaxial with motor shaft (14), and water pump and motor are that shaft coupling rotates, and the pump housing is fixedly mounted on the motor body (11), forms an integral body, and is easy to use.Impeller (23) is the plural serial stage impeller.

The water intake (24) of above-mentioned water pump (2) is positioned at water pump and motor joint, its water outlet is positioned at the top of pump body (22), to guarantee that water liquid enters from water intake (24), upwards discharge through impeller (23), bottom centre at the pump housing has into water duct (25), between water inlet duct periphery and motor body (11), be equipped with filter (26), with the foreign material in the elimination water liquid.

Has the pressuring plate (27) that links to each other with the pump housing between the above-mentioned adjacent impeller, on the one hand anti-sealing liquid crossfire between impeller, guarantee that on the other hand water liquid one-level one-level upwards extrudes (under the centrifugal action), pressuring plate is close to top impeller, and have runner (28) between the following surface impeller, between the impeller periphery and the pump housing, have supercharging runner (29).

Above-mentioned water pump spindle (21) adopts hexagonal axis, and impeller is installed on the water pump spindle, has impeller channel (23) in the impeller.

Above-mentioned impeller adopts the high strength glass fiber plastics, to reduce the sand grains wearing and tearing.

Appearance has suspension ring at above-mentioned pump housing top, is convenient to install and use.

Claims

1. a submersible pump is made up of motor (1) and water pump (2) two-part, and motor (1) includes motor body (11), stator (12), rotor assembly (13), motor shaft (14); Water pump (1) includes water pump spindle (21), and the pump housing (22) and impeller (23) is characterized in that: water pump spindle (21) is the week axle with motor shaft, and water pump and motor are that shaft coupling rotates; On the pump housing (22) the fixed installation motor body (11); The impeller (23) that is installed on the water pump spindle (21) is the plural serial stage impeller.

2. submersible pump according to claim 1 is characterized in that: the water intake (24) of water pump (2) is positioned at the joint of water pump (2) and motor (1), and its water outlet is positioned at the top of pump body (22); Bottom centre at the pump housing (22) has into water duct (25), is equipped with filter (26) between water inlet duct (25) periphery and motor body (11).

3. submersible pump according to claim 1 and 2 is characterized in that: have the pressuring plate (27) that links to each other with the pump housing (22) between adjacent impeller, pressuring plate is close to surface impeller, and has runner (28) between the following surface impeller.

4. submersible pump according to claim 1 and 2 is characterized in that: water pump spindle (21) adopts hexagonal axis, and impeller is installed on the water pump spindle, has impeller channel in the impeller.

5. submersible pump according to claim 1 and 2, it is characterized in that: motor shaft (14) is installed on the motor body (11) by bearing (15) up and down and (15 '), the motor body has upper, middle and lower three die cavities, stator, rotor assembly, electromagnetic wire are positioned in the intermediate cavity, be equipped with the capacitor that links to each other with electromagnetic wire in the die cavity of bottom, be equipped with the motor shaft Sealing in the die cavity of top.

6. submersible pump according to claim 1 is characterized in that: above-mentioned impeller adopts the high strength glass fiber plastics.