CN215370333U - Front bearing and submersible pump - Google Patents

Abstract

The utility model discloses a front bearing and a submersible pump, wherein the front bearing comprises an outer ring, an auxiliary channel is formed on the outer ring, one end of the auxiliary channel is communicated with a rotor cavity, and the other end of the auxiliary channel is communicated with an impeller cavity, so that air and water are discharged from the rotor cavity through the impeller cavity by the auxiliary channel. The front bearing is convenient for discharging water, air and impurities by arranging the auxiliary channel.

Description

Front bearing and submersible pump

Technical Field

The utility model belongs to the field of submersible pumps, and particularly relates to a front bearing and a submersible pump.

Background

The DC submersible pump for small household appliances is an axial flow pump structure, and water is lifted by utilizing the thrust generated by the high-speed rotation of an impeller. When the axial flow pump blades rotate, lift force is generated on water, and the water is pushed to the upper side from the lower side.

The blades of the axial flow pump are generally immersed in a pool of a water absorption source, water is continuously pushed upwards under the action of lift force generated by the blades, so that the water flows out along the water outlet pipe, the impeller continuously rotates, and the water is continuously pressed and conveyed out along the water outlet pipe.

The direct current submersible pump has high rotating speed (6900r/min), a rotor needs to be lubricated by water when the direct current submersible pump works, air exists in a pump cavity to generate an air film due to the fact that water in the pump cavity is insufficient or water splash is brought into the pump cavity, and the direct current submersible pump can generate very obvious noise problems similar to 'whistle' when working. Because the direct current immersible pump is used on the household electrical appliances, the water that uses can not be too clean, long-term use can the laying dust, the condition of sediment, if in case there is impurity entering immersible pump cavity, can cause the dead scheduling problem of out of work of card, the event is very high to the lubricated structure design requirement of intaking of immersible pump water, will guarantee promptly that there is enough water to get into the inside friction noise problem of solving of pump cavity, will prevent again that impurity from getting into the inside card of pump cavity and dying the scheduling problem of out of work.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that impurities are blocked in the pump in the background technology, the utility model provides a front bearing and a submersible pump.

In order to achieve the purpose, the specific technical scheme of the front bearing and the submersible pump is as follows:

a front bearing is arranged between a rotor cavity and an impeller cavity and comprises an outer ring, wherein an auxiliary channel is formed on the outer ring, one end of the auxiliary channel is communicated with the rotor cavity, and the other end of the auxiliary channel is communicated with the impeller cavity, so that air and water are supplied to the auxiliary channel and are discharged from the rotor cavity through the impeller cavity.

Further, the auxiliary channel comprises an axial through groove axially arranged on the outer wall of the outer ring.

Further, a radial through groove arranged along the radial direction is formed at one end, close to the rotor cavity, of the axial through groove.

Further, the radial through groove extends from the outer edge of the outer ring to the inner edge of the outer ring.

Furthermore, the auxiliary channels are uniformly arranged on the outer ring along the circumferential direction.

Furthermore, an inner ring is rotationally connected in the outer ring, and a linear groove extending along the radial direction is formed in the end face, close to the rotor cavity, of the inner ring.

Further, the straight groove extends from the outer edge of the inner ring to the inner edge of the inner ring.

Furthermore, the linear grooves are symmetrically arranged on the inner ring.

A submersible pump comprises the front bearing.

Further, the immersible pump includes the casing, and the casing is formed with the mounting groove that is used for the cover to establish front bearing, and the outer lane cover is established in the mounting groove lateral wall, outer lane terminal surface and mounting groove bottom surface butt.

The front bearing and the submersible pump have the following advantages: effectively get rid of the inside air of pump cavity from structural design, and impurity is difficult for getting into the pump cavity again, solves direct current immersible pump long-term operation noise problem.

Drawings

FIG. 1 is a cross-sectional view of a submersible pump according to the present invention;

fig. 2 is a schematic view of the front bearing structure of the present invention.

The notation in the figure is:

1. an outer ring; 2. an inner ring; 3. an auxiliary channel; 31. an axial through slot; 32. a radial through groove; 4. a straight slot; 5. a housing; 51. mounting grooves; 52. a rotor cavity; 53. an impeller cavity; 6. a stator; 7. a rotor; 8. a rotating shaft; 9. an impeller.

Detailed Description

For better understanding of the purpose, structure and function of the present invention, a front bearing and a submersible pump according to the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the submersible pump of the present invention includes a housing 5, and a rotor chamber 52 and an impeller chamber 53 are formed in the housing 5. Be equipped with stator 6 on the rotor chamber 52 outer wall, stator 6 is internal to be equipped with the cover and is equipped with rotor 7, and rotor 7 installs on pivot 8 to through the motor element that stator 6 and rotor 7 constitute, drive pivot 8 rotates. One end of the rotating shaft 8 penetrates through the front bearing and extends into the impeller cavity 53 to be provided with the impeller 9; as the rotating shaft 8 rotates, the impeller 9 drives the water in the impeller cavity 53 to drain from the water outlet and replenish water from the water inlet.

In order to facilitate the discharge of impurities, the front bearing is arranged between the rotor cavity 52 and the impeller cavity 53 and comprises an inner ring 2 and an outer ring 1 sleeved outside the inner ring 2, rolling bodies are arranged between the outer ring 1 and the inner ring 2 and are uniformly arranged between the inner ring 2 and the outer ring 1 by virtue of a retainer, and therefore the inner ring 2 is rotatably connected into the outer ring 1. The outer ring 1 is formed with an auxiliary passage 3, one end of the auxiliary passage 3 communicates with the rotor chamber 52, and the other end communicates with the impeller chamber 53, so that the auxiliary passage 3 supplies air and water from the rotor chamber 52 to be discharged through the impeller chamber 53. The air, water and impurities can be discharged quickly, and the noise is reduced; and because the air inlet is not straight, sundries cannot easily enter the cavity.

The auxiliary channel 3 comprises an axial through slot 31 arranged axially on the outer wall of the outer ring 1. The axial through groove 31 is formed with a radial through groove 32 disposed in the radial direction at an end near the rotor cavity 52. The radial through groove 32 extends from the outer edge of the outer ring 1 to the inner edge of the outer ring 1. And the auxiliary channels 3 are generally arranged in 8 and are uniformly arranged on the outer ring 1 along the circumferential direction.

The end face of the inner ring 2 close to the rotor cavity 52 is provided with a straight groove 4 extending along the radial direction, and the straight groove 4 extends from the outer edge of the inner ring 2 to the inner edge of the inner ring 2, so that water quickly contacts the friction surface of the shaft and the bearing from the inside of the rotor cavity 52 to achieve effective lubrication. And the straight grooves 4 are symmetrically arranged on the inner ring 2.

The housing 5 is formed with a mounting groove 51 for housing the front bearing, the outer ring 1 is housed in the side wall of the mounting groove 51, and the end surface of the outer ring 1 abuts against the bottom surface of the mounting groove 51.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. A front bearing, arranged between a rotor cavity (52) and an impeller cavity (53), comprising an outer ring (1), characterized in that an auxiliary channel (3) is formed on the outer ring (1); one end of the auxiliary passage (3) is communicated with the rotor chamber (52), and the other end is communicated with the impeller chamber (53), so that the auxiliary passage (3) is used for discharging air and water from the rotor chamber (52) through the impeller chamber (53).

2. Front bearing according to claim 1, characterized in that the auxiliary channel (3) comprises an axial through slot (31) arranged axially on the outer wall of the outer ring (1).

3. Front bearing according to claim 2, characterized in that the axial through slot (31) is formed with a radially arranged radial through slot (32) at the end close to the rotor cavity (52).

4. Front bearing according to claim 3, characterized in that the radial through groove (32) extends from the outer rim of the outer ring (1) to the inner rim of the outer ring (1).

5. Front bearing according to claim 1, characterized in that the auxiliary channels (3) are arranged circumferentially evenly on the outer ring (1).

6. Front bearing according to claim 1, characterized in that an inner ring (2) is rotatably connected in the outer ring (1), the inner ring (2) being provided with a radially extending slotted groove (4) in its end face close to the rotor chamber (52).

7. Front bearing according to claim 6, characterized in that the in-line groove (4) extends from the outer edge of the inner ring (2) to the inner edge of the inner ring (2).

8. Front bearing according to claim 6, characterized in that the in-line grooves (4) are arranged symmetrically on the inner ring (2).

9. A submersible pump comprising a front bearing according to any of claims 1 to 8.

10. The submersible pump according to claim 9, comprising a housing (5), wherein the housing (5) is formed with a mounting groove (51) for receiving the front bearing, the outer ring (1) is received in a side wall of the mounting groove (51), and an end surface of the outer ring (1) abuts against a bottom surface of the mounting groove (51).

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