CN203560108U

CN203560108U - Submersible pump

Info

Publication number: CN203560108U
Application number: CN201320777307.3U
Authority: CN
Inventors: 刘金辉
Original assignee: WENLING GOLDEN WING ELECTRICAL & MECHANICAL Co Ltd
Current assignee: WENLING GOLDEN WING ELECTRICAL & MECHANICAL Co Ltd
Priority date: 2013-12-02
Filing date: 2013-12-02
Publication date: 2014-04-23
Anticipated expiration: 2023-12-02

Abstract

The utility model provides a submersible pump, and belongs to the technical field of water pumps. The problem that an existing submersible pump is poor in reliability and high in cost is solved. The submersible pump comprises a pump body with a water inlet, a pump casing and a supporting plate, wherein the pump casing with a water outlet is arranged above the pump body, and the supporting plate is arranged between the pump body and the pump casing. A motor is arranged on the supporting plate, a rotating shaft of the motor extends into the pump body, an impeller is sleeved on the rotating shaft, a capacitor disc, a capacitor cover fastened over the capacitor disc and a capacitor arranged between the capacitor disc and the capacitor cover are arranged above the motor, a shroud used for fixing the capacitor cover is arranged on the pump casing, the capacitor is connected with the motor electrically, and a float switch electrically connected with the capacitor is arranged on the outer side of the pump body. The submersible pump has the advantages of high reliability, low cost and the like.

Description

A kind of submersible pump

Technical field

The utility model belongs to pump technology field, relates to a kind of submersible pump.

Background technique

Submersible pump is that the mechanical energy of prime mover is converted to the machine of pumping liquid energy, prime mover produces centrifugal force by the rotation of pump shaft impeller, and to liquid, acting can increase, under centrifugal action, liquid is thrown toward impeller outlet along blade passage, and liquid is collected and sent into discharge tube through spiral case.Liquid obtains energy from impeller, and pressure energy and speed can all be increased, and relies on this energy that liquid is transported to job site.When liquid is thrown toward impeller outlet, impeller eye center has formed low pressure, between imbibition tank and the liquid of impeller center, has just produced pressure reduction, and the liquid in imbibition tank is under this differential pressure action, constantly the suction chamber through suction line and pump enters in impeller, thereby forms circulation.

In existing submersible pump, generally by external controller, realize the control to pump motor: while needing, connect controller, make pump motor work, breaking controller while not needing, pump motor is quit work, for preventing pump motor idle running motor damage, need workman on duty, labour cost is high, if workman does not look, still likely cause burning of pump motor, maintenance is inconvenient.Float switch, as the water-shortage protection device of water pump, is widely used in submersible pump, and existing float switch is connected with controller, and controller is connected with pump motor again.Because the cost of controller is higher, if be applied on submersible pump, cause the cost of submersible pump high, in market competition, be in a disadvantageous position.

Summary of the invention

The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of reliability submersible pump high, that can automatically move and stop when SEA LEVEL VARIATION.

The purpose of this utility model can realize by following technical proposal:

This submersible pump, comprise the pump housing with water intake, be located on its of pump housing top, there is the pump case of water outlet and be located at the pump housing and pump case between dunnage, described dunnage is provided with motor, the rotating shaft of described motor stretches in the pump housing and in this rotating shaft and is arranged with impeller, it is characterized in that, the top of described motor is provided with capacitance disk, be fastened on the capacitor cover of capacitance disk top and be located at capacitance disk and capacitor cover between capacitor, described pump case is provided with the cover cap for fixed capacity cover, described capacitor is electrically connected to described motor, the outside of the described pump housing is provided with a float switch being connected with capacitor electrode.

In dunnage, be provided with water channel, after motor operation, the rotation of impeller drives water to enter in the pump housing from water intake, through the water channel of crossing in dunnage, enters in pump case, finally by water outlet, is discharged.Whole working procedure, capacitor is controlled the operation of motor and is stopped, if when water level changes, float switch passes to capacitor by signal, thereby reaches the object of controlling motor operation or stopping.The cost of capacitor is low, by capacitance disk and capacitor cover, by capacitor sealed envelope, prevents that it from contacting with water, has improved the working life of capacitor, and stability is better.

In above-mentioned submersible pump, between described capacitor cover and pump case, be provided with seal ring one.

In above-mentioned submersible pump, described motor comprises upper end cap, housing, lower end cap, is located at the stator in housing and is sheathed on the rotor in rotating shaft, above-mentioned capacitance disk is located on upper end cap, the below of described lower end cap is provided with oil cylinder cover, between described oil cylinder cover and lower end cap, be formed with oil pocket, in described rotating shaft, be arranged with axle sleeve, between described axle sleeve and lower end cap, be provided with outside framework oil seal, between described axle sleeve and oil cylinder cover, be provided with mechanical seal.

In above-mentioned submersible pump, between described housing and capacitor cover, be provided with seal ring two.

In above-mentioned submersible pump, between described lower end cap and oil cylinder cover, be provided with seal ring three, a side of described seal ring three is resisted against on housing.

In above-mentioned submersible pump, between the described pump housing and dunnage, be provided with seal ring four.

In above-mentioned submersible pump, the downside of the described pump housing is provided with spacer screen.Spacer screen can anti-sealing in larger impurity enter into and in the pump housing, be wound around impeller, the working life of improving motor.

Compared with prior art, this submersible pump has the following advantages:

By capacitor, controlled the operation of motor and stopped, its stability is high, cost is low, is provided with seal ring two between housing and capacitor cover, can contact with capacitor by anti-sealing, has extended the working life of capacitor; By outside framework oil seal, mechanical seal and the seal ring three arranging, can enter in oil pocket by anti-sealing good airproof performance; Downside at the pump housing is provided with spacer screen, can anti-sealing in larger impurity enter into and in the pump housing, be wound around impeller, the working life of improving motor.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of preferred embodiment of providing of the utility model.

In figure, 1, the pump housing; 11, water intake; 2, pump case; 21, water outlet; 3, dunnage; 41, rotating shaft; 42, upper end cap; 43, housing; 44, lower end cap; 45, stator; 46, rotor; 47, axle sleeve; 48, outside framework oil seal; 49, mechanical seal; 5, impeller; 61, capacitance disk; 62, capacitor cover; 63, capacitor; 64, cover cap; 65, float switch; 71, seal ring one; 72, seal ring two; 73, seal ring three; 74, seal ring four; 8, oil cylinder cover; 9, spacer screen.

Embodiment

Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.

This submersible pump, can and stop according to the starting of water level automatically controlled water pump motor, and automaticity is high, and pump motor is played a good protection, and extends its working life.As shown in Figure 1, this submersible pump, comprise have water intake 11 the pump housing 1, be located on its of the pump housing 1 top, there is the pump case 2 of water outlet 21 and be located at the pump housing 1 and pump case 2 between dunnage 3, dunnage 3 is provided with motor, and the rotating shaft 41 of motor stretches in the pump housing 1 and in this rotating shaft 41 and is arranged with impeller 5.Concrete, as shown in Figure 1, motor comprises upper end cap 42, housing 43, lower end cap 44, is located at the stator 45 in housing 43 and is sheathed on the rotor 46 in rotating shaft 41, the upper end cap 42 of motor be provided with capacitance disk 61, be fastened on the capacitor cover 62 of capacitance disk 61 tops and be located at capacitance disk 61 and capacitor cover 62 between capacitor 63, pump case 2 is provided with the cover cap 64 for fixed capacity cover 62, wherein, capacitor 63 is electrically connected to motor, and the outside of the pump housing 1 is provided with a float switch 65 being electrically connected to capacitor 63.

After motor operation, the rotation of impeller 5 drives water to enter in the pump housing 1 from water intake 11, through the water channel of crossing in dunnage 3, enters in pump case 2, finally by water outlet 21, is discharged.Whole working procedure, capacitor 63 is controlled the operation of motor and stops, if when water level changes, float switch 65 passes to capacitor 63 by signal, thereby reaches the object of controlling motor operation or stopping.The cost of capacitor 63 is low, by capacitance disk 61 and capacitor cover 62, by capacitor 63 sealed envelope, prevents that it from contacting with water, has improved the working life of capacitor 63, and stability is better.

As shown in Figure 1, below lower end cap 44, be provided with oil cylinder cover 8, between oil cylinder cover 8 and lower end cap 44, be formed with oil pocket, in rotating shaft 41, be arranged with axle sleeve 47, between axle sleeve 47 and lower end cap 44, be provided with outside framework oil seal 48, between axle sleeve 47 and oil cylinder cover 8, be provided with mechanical seal 49.

As shown in Figure 1, between capacitor cover 62 and pump case 2, be provided with seal ring 1; Between housing 43 and capacitor cover 62, be provided with seal ring 2 72; Between lower end cap 44 and oil cylinder cover 8, be provided with seal ring 3 73, a side of described seal ring 3 73 is resisted against on housing 43; Between the pump housing 1 and dunnage 3, be provided with seal ring 4 74.

As shown in Figure 1, the downside of the pump housing 1 is provided with spacer screen 9, this spacer screen 9 can anti-sealing in larger impurity enter into the interior winding impeller 5 of the pump housing 1, improve the working life of motor.

Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims

1. a submersible pump, comprise the there is water intake pump housing (1) of (11), be located on its of the pump housing (1) top, there is the pump case (2) of water outlet (21) and be located at the pump housing (1) and pump case (2) between dunnage (3), described dunnage (3) is provided with motor, the rotating shaft of described motor (41) stretches in the pump housing (1) and in this rotating shaft (41) and is arranged with impeller (5), it is characterized in that, the top of described motor is provided with capacitance disk (61), be fastened on the capacitor cover (62) of capacitance disk (61) top and be located at capacitance disk (61) and capacitor cover (62) between capacitor (63), described pump case (2) is provided with the cover cap (64) for fixed capacity cover (62), described capacitor (63) is electrically connected to described motor, the outside of the described pump housing (1) is provided with a float switch (65) being electrically connected to capacitor (63).

2. a kind of submersible pump according to claim 1, is characterized in that, between described capacitor cover (62) and pump case (2), is provided with seal ring one (71).

3. a kind of submersible pump according to claim 1, it is characterized in that, described motor comprises upper end cap (42), housing (43), lower end cap (44), be located at the stator (45) in housing (43) and be sheathed on the rotor (46) in rotating shaft (41), above-mentioned capacitance disk (61) is located on upper end cap (42), the below of described lower end cap (44) is provided with oil cylinder cover (8), between described oil cylinder cover (8) and lower end cap (44), be formed with oil pocket, in described rotating shaft (41), be arranged with axle sleeve (47), between described axle sleeve (47) and lower end cap (44), be provided with outside framework oil seal (48), between described axle sleeve (47) and oil cylinder cover (8), be provided with mechanical seal (49).

4. a kind of submersible pump according to claim 3, is characterized in that, between described housing (43) and capacitor cover (62), is provided with seal ring two (72).

5. according to a kind of submersible pump described in claim 3 or 4, it is characterized in that, between described lower end cap (44) and oil cylinder cover (8), be provided with seal ring three (73), a side of described seal ring three (73) is resisted against on housing (43).

6. a kind of submersible pump according to claim 1, is characterized in that, between the described pump housing (1) and dunnage (3), is provided with seal ring four (74).

7. a kind of submersible pump according to claim 1, is characterized in that, the downside of the described pump housing (1) is provided with spacer screen (9).