CN2654913Y

CN2654913Y - Water pump

Info

Publication number: CN2654913Y
Application number: CN 200320109036
Authority: CN
Inventors: 聂桂林
Original assignee: Zhejiang Sanhua Co Ltd
Current assignee: Zhejiang Sanhua Co Ltd
Priority date: 2003-10-15
Filing date: 2003-10-15
Publication date: 2004-11-10
Anticipated expiration: 2013-10-15

Abstract

The utility model relates to a drainage pump used in an air conditioner. For the drainage pump in prior art, a motor shaft is provided with an impeller; a migration plate is arranged over the impeller and is not effectively fixed, so the migration plate can freely move up and down along the motor shaft under the effect of high-speed motor shaft operation and other forces, which affects water retaining effect and only has a single function of water retaining. The utility model comprises a pump chamber, an impeller, a motor and a water retaining ring; wherein, the pump chamber is formed by an upper pump body and a lower pump body; the impeller is positioned in the pump chamber; the motor drives the impeller to rotate; and the water retaining ring is sleeved on the motor shaft and is positioned over the extending section of the impeller. The utility model is characterized in that the water retaining ring is of convex shape, comprising a lubricating oil receiving part at the upper half part and a water retaining part at the lower part; an upper end surface of the lubricating oil receiving part forms an oil receiving plane. The utility model has the advantages of perfect combination of the migration plate and a collar, simplified structure, reduced cost, convenient assembly, improved water retaining effect and more reliable lubricating oil receiving.

Description

Novel draining pump

[technical field]

The utility model relates to the draining pump in a kind of air conditioner.

[background technique]

When air conditioner cools off and dehumidify operation, stick on the indoor heat exchanger after the airborne condensate moisture, after the water on the heat exchanger gathers to a certain degree, can drop onto in the water receiving disc of heat exchanger below, and the effect of draining pump is exactly to be rejected to the condensed water in the water receiving disc outdoor.Draining pump also can be applied in other occasions, as the cooling action etc. of drawing water.

There is shift plate (also claim water holding ring or block water plate, see Fig. 1) top that impeller, impeller are housed on the motor shaft (transmission shaft) of draining pump at present.Shift plate generally is material with the plastic pellicle, and circular ring plays a part to stop waste water to enter motor.The shift plate of this structure does not obtain effectively fixing, motor shaft run up and other the effect of power under, shift plate can freely move up and down along motor shaft, has influenced the dash effect and has only had the simple function of dash.

For this reason, common cover one collar (see figure 2) on the motor shaft of draining pump, it comprises that one is used for the dish type flange and the cylindrical section that are connected with motor shaft, cylindrical section plays reception lubricant oil.An end face of the cylindrical section of the collar forms the surface that receives lubricant oil, and lubricant oil is used for the lubrication motor bearing, and this kind structure only receives lubricant oil with an end face, and too much when the lubricant oil that is leaked, end face does not have the effect of reliable reception lubricant oil.The above-mentioned shift plate and the collar independence and the effect that reaches separately are not very desirable.

[model utility content]

The technical assignment of technical problem to be solved in the utility model and proposition is to overcome the defective that above-mentioned prior art exists, provide a kind of water holding ring to be fixed on draining pump on the motor shaft, it is with shift plate in the existing product and the organic combination of the collar, reach the purpose of dash and reception lubricant oil economic benefits and social benefits, to improve dash and lubricant oil reception.

The technological scheme that the utility model adopted is: novel draining pump, comprise the pump chamber that upper pump casing and lower pump body form, be positioned at the impeller and the impeller motor rotating of pump chamber, be enclosed within on the motor shaft and be positioned at the water holding ring of the top of impeller extension, it is characterized in that described water holding ring is " protruding " shape, it is made up of the lubricant oil acceptance division of the first half and the retaining section of Lower Half, and the retaining section stops that waste water enters motor; The upper-end surface of lubricant oil acceptance division forms and connects oily plane, in order to receive lubricant oil.

Described novel draining pump, the diameter of retaining section are 1.5～2.5cm, and the center of water holding ring has a up big and down small conical bore, form on the hole wall and connect the oily conical surface and motor shaft fitting surface, connect the oily conical surface and connect oily plane and cooperate and make reception lubricant oil more reliable.

The beneficial effects of the utility model are: with shift plate in the existing product and the organic combination of the collar, simplify the structure, reduced cost, and easy to assembly, improved the dash effect, it is more reliable that lubricant oil is received.

Below in conjunction with drawings and Examples the utility model is further described.

[description of drawings]

Fig. 1 is the structural drawing of shift plate in the existing draining pump.

Fig. 2 is the structural drawing of the collar in the existing draining pump.

Fig. 3 is a structural representation of the present utility model.

Fig. 4 is the enlarged view of the utility model water holding ring structure.

Fig. 5 is the plan view of Fig. 4.

Fig. 6 is the partial enlarged drawing of Fig. 3.

[embodiment]

Show as Fig. 3-6, novel draining pump comprises upper pump casing 1, lower pump body 2, be placed in impeller 4 and impeller 4 motor rotating 5 in the pump chamber 3 that upper pump casing 1 and lower pump body 2 form, be placed in the O shape circle 14 of upper pump casing 1 and lower pump body 2 cooperation places, be enclosed within on the motor shaft 6, be positioned at the water holding ring 7 of impeller 4 extensions tops, with motor 5 be holistic motor lower end cap 15, oil-impregnated bearing 16, oily cotton 17 are arranged in the lower end cap 15, lubricant oil in the oil cotton can constantly replenish to bearing, plays the effect that prolongs electrical machinery life.Described water holding ring 7 is " protruding " shape, it is made up of the lubricant oil acceptance division 8 of the first half and the retaining section 9 of Lower Half, the diameter of retaining section 9 is 2cm, the upper-end surface of lubricant oil acceptance division 8 forms and connects oily plane 10, the center of water holding ring 7 has a up big and down small conical bore 11, forms on the hole wall and connects the oily conical surface 12 and motor shaft fitting surface 13.Oil-impregnated bearing is generally the copper base or the ferrous alloy material sintering forms, and has good oil storage performance; Water holding ring generally is raw material with engineering plastics; O type circle is generally rubber product; Motor shaft is a stainless steel material, and upper pump casing, lower pump body, impeller are plastic article.

Water pump generates heat in operation process, can cause the oil in oily cotton and the bearing to expand, and the oil temperature rises, the viscosity of oil diminishes, this just causes oil to leak along motor shaft, the little oil leakage of viscosity is to the oily plane of connecing of water holding ring and the conical surface, under the restriction of capillary effect and this body structure of water holding ring, water holding ring connect oily plane and the conical surface forms poly-oil district.When pump motor did not turn round, bearing was collected in oil on the dash articulating oil plane and the conical surface according to capillary phenomenon, and oil collecting zone disappears.Because the space and the area that connect oily plane and conical surface formation of water holding ring are bigger, this lubricant oil of just having avoided being leaked when the long-time running of motor is leaking after connecing oily plane and meeting oily conical surface place again.And the thimble structure in the existing product receives lubricant oil and only relies on upper surface, and after the long-time running of motor, the lubricant oil of leakage is many, and only the surface can not reliably receive.

Claims

1, novel draining pump, comprise the pump chamber (3) that upper pump casing (1) and lower pump body (2) form, be positioned at the impeller (4) and impeller (4) motor rotating (5) of pump chamber (3), be enclosed within motor shaft (6) and go up and be positioned at the water holding ring (7) of the top of impeller (4) extension, it is characterized in that described water holding ring (7) is " protruding " shape, it is made up of the lubricant oil acceptance division (8) of the first half and the retaining section (9) of Lower Half, and the upper-end surface of lubricant oil acceptance division (8) forms and connects oily plane (10).

2, novel draining pump according to claim 1, the diameter that it is characterized in that described retaining section (9) is 1.5～2.5cm, the center of water holding ring (7) has a up big and down small conical bore (11), forms on the hole wall and connects the oily conical surface (12) and motor shaft fitting surface (13).