CN202250920U

CN202250920U - Novel submersible type sewage pump

Info

Publication number: CN202250920U
Application number: CN2011203372351U
Authority: CN
Inventors: 叶志宏
Original assignee: PACIFIC OCEAN PUMP INDUSTRY GROUP Co Ltd
Current assignee: PACIFIC OCEAN PUMP INDUSTRY GROUP Co Ltd
Priority date: 2011-09-08
Filing date: 2011-09-08
Publication date: 2012-05-30
Anticipated expiration: 2021-09-08

Abstract

The utility model discloses a novel submersible type sewage pump, which comprises a lead-out cable part, a wiring board, a motor cover, a motor shell, a motor stator, a motor rotor, a shaft, a rolling bearing, a mechanical seal, a mechanical seal protecting cover, a coupling body, an impeller, a pump body, a sliding bearing and a base plate, wherein the pump and the motor are coupled into a whole through the coupling body; a suction opening of the impeller is upward; pumped water enters the impeller through the coupling body; the mechanical seal adopts a single mechanical seal, and is positioned on a suction opening part of the impeller; an inlet of the impeller is upward; and axial force is balanced through a back blade of the impeller, and residual axial force is upward. The utility model has the advantages that: the sewage pump has a reasonable structure, the axial force can be effectively balanced, a pressure-bearing surface of the mechanical seal is reduced so as to be reliably sealed; meanwhile, the height of the whole set is reduced, so that material consumption is reduced, and the product cost is reduced; the service life of the bearing is effectively prolonged; and therefore, the service life of the product is prolonged.

Description

Novel submersible type sewage pump

Technical field

The utility model relates to mechanical engineering pump class technical field, particularly is applied to the submersible type sewage pump that effluent discharge is carried.

Background technique

The submersible type sewage pump is widely used in various effluent discharge occasions, is a kind of general service pump series products.Its main feature is; Motor and pump are the one compact type, compact overall structure, and volume is little, need not to build pump house, and the complete machine work of getting final product that pulls the plug can significantly reduce engineering cost.Existing product (Fig. 1) be mouth piece below, motor and pump connect through the grease chamber, the axle envelope adopts double mechanical seal, and comes lubricating mechanical sealing through interior installation oil.The shortcoming of this structure has the impeller suction inlet down, and pump operation is to produce downward axial force with the increase of pressure; The direction just in time weight direction with rotor is identical; So just increase the axial force that bearing bears more, bearing life is descended, seriously can burn out a bearing.Simultaneously the pump reason of this structure has twice machine envelope, and the mechanical seal that is positioned at the bottom is in confined area, and there is unreliable phenomenon in sealing effect.

The model utility content

To the deficiency of existing technology, it is a kind of rational in infrastructure that the utility model provides, and ability active balance axial force reduces the mechanical seal pressure-bearing surface, and it is reliable to make it sealing, reduces the complete machine height simultaneously, thereby reduces the submersible type sewage pump of materials consumption.

To achieve these goals, the utility model solution technological scheme that its technical problem adopted is:

A kind of novel submersible type sewage pump; Include outgoing cable parts, wire board, motor cover, motor casing, motor stator, rotor, axle, rolling bearing, mechanical seal, machine envelope protecting cover, connected body, impeller, the pump housing, sliding bearing and chassis; Pump and motor are to be connected into one through connected body, suction eye up, pump water inlet gets into impeller through connected body; Single mechanical seal is adopted in mechanical seal, and mechanical seal is positioned at the suction port position of impeller.

Described impeller inlet up, remaining axial force is directed upwardly axial force through impeller back blade balance.

The beneficial effect of the utility model: because of machine envelope is positioned at the impeller inlet position, can not bear different pressure because of the difference of the lift of water pump during pump work, just sealing is reliable for this model machine envelope, also can correspondingly improve working life; Because impeller inlet up; Remaining axial force is directed upwardly axial force through impeller back blade balance; Just in time be directed downwards and the part of cancelling each other with rotor weight, the axial force that so just makes the complete machine bearing born is more a lot of than the pump minimizing of existing product submersible type sewage pump structure, and the running environment of bearing obtains very big optimization; Effectively increased the working life of bearing, thereby improved the working life of product; Simultaneously because suction eye, makes substructure height effectively to shorten, thereby has reduced the pump discharge center height that this makes the coupling substructure height of pump adapted also reduce, and has reduced the consumption of material effectively, has reduced the cost of product up.

Description of drawings

Fig. 1 is an existing product submersible type sewage pump structural representation;

Fig. 2 is the utility model submersible type sewage pump structural representation.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

As shown in Figure 2; A kind of novel submersible type sewage pump includes outgoing cable parts 1, wire board 2, motor cover 3, motor casing 4, motor stator 5, rotor 6, axle 7, rolling bearing 8, mechanical seal 9, machine envelope protecting cover 10, connected body 11, impeller 12, the pump housing 13, sliding bearing 14 and chassis 15, and pump and motor are to be connected into one through connected body 11; Impeller 12 suction ports up; Pump water inlet is to get into impeller 12 through connected body 11, and single mechanical seal is adopted in mechanical seal 9, and mechanical seal 9 is positioned at the suction port position of impeller 12; So do not bear water-aspirator pressure; Mechanical seal 9 is simultaneously protected the invasion that does not receive sewage impurity through machine envelope protecting cover 10, plays the effect of filtering and loosing temperature simultaneously, so just makes increase the working life of mechanical seal 9.Impeller 12 imports up; Remaining axial force is directed upwardly axial force through impeller 12 back blade balances; Just in time be directed downwards and the part of cancelling each other with rotor 6 weight, the axial force that so just makes complete machine bearing 8 born reduces a lot, and the running environment of bearing obtains very big optimization; Effectively increased the working life of bearing, thereby improved the working life of product.Simultaneously since impeller 12 suction ports up, make base 15 highly can effectively shorten, thereby reduced the pump discharge center height; This makes the coupling substructure height of pump adapted also reduce; Reduce the consumption of material effectively, reduced the cost of product, reached the purpose of the utility model.

Claims

1. novel submersible type sewage pump; Include outgoing cable parts (1), wire board (2), motor cover (3), motor casing (4), motor stator (5), rotor (6), axle (7), rolling bearing (8), mechanical seal (9), machine envelope protecting cover (10), connected body (11), impeller (12), the pump housing (13), sliding bearing (14) and chassis (15); It is characterized in that; Pump and motor are to be connected into one through connected body (11); Impeller (12) suction port up, mechanical seal (9) is positioned at the suction port position of impeller (12).