CN219888319U - Electronic water pump water inlet bearing seat - Google Patents

Abstract

The utility model discloses a water inlet bearing seat of an electronic water pump, which belongs to the field of mechanical structures and comprises a pump body, wherein the pump body is provided with a water inlet, an annular groove with the diameter larger than that of the water inlet is arranged in the water inlet, the bearing seat is embedded in the annular groove, the scheme also comprises a bearing, an impeller and a rotor, the impeller is fixed on the rotor, the impeller comprises an impeller front cover plate, and the impeller front cover plate is abutted with the bearing. In the scheme, the bearing seat is made of rubber materials, the small-diameter hole of the water inlet is used for water inflow, the large-diameter hole is an annular groove and is used for installing the bearing seat, and the bearing seat can complement a gap between the pump body and the impeller, so that the gap between the pump body and the impeller is sealed, water at the water inlet is prevented from entering the gap between the pump body and the impeller, and the output efficiency of the impeller is reduced; and the bearing seat is independent of the pump body, so that the manufacturing difficulty of the pump body and the bearing seat is greatly reduced.

Description

Electronic water pump water inlet bearing seat

Technical Field

The utility model relates to a bearing seat, in particular to a water inlet bearing seat of an electronic water pump.

Background

The existing electronic water pump is generally provided with no bearing seat at the water inlet position, but the bearing seat is arranged on the motor rotor shaft to be matched with a bearing to drive an impeller to rotate, and also a part of the existing electronic water pump is provided with a bearing seat with a rib plate on the water inlet of the pump body for installing a thrust bearing of the water inlet, the water inlet is provided with no bearing seat, the water inlet is easy to leak at the water inlet, and the bearing seat with the rib plate is difficult to manufacture in a cone-shaped form, so that the manufacturing difficulty is high.

For example: the utility model discloses a structure of a bearing seat, which comprises a front bearing seat and a rear bearing seat, wherein the rear bearing seat is arranged in an opening at the rear end of a shielding sleeve, an axial bearing is fixed in the front bearing seat, the heat dissipation effect of the scheme is good, the structure is compact, an additional heat dissipation structure is not required, but in the scheme, because special treatment is arranged in a water inlet of the scheme, the water flow leakage quantity of the water inlet is large, and the output efficiency of the water pump is reduced.

Disclosure of Invention

The utility model solves the problem of larger leakage of the water inlet of the existing electronic water pump, and provides the water inlet bearing seat of the electronic water pump.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an electronic water pump water inlet bearing frame, includes the pump body, the pump body is equipped with the water inlet, be equipped with the ring channel that the diameter is greater than the water inlet diameter in the water inlet, the ring channel is embedded to have the bearing frame. The bearing frame adopts rubber material in this scheme, is used for intaking in the water inlet path hole, and the big footpath hole is the ring channel for the installation bearing frame, and the bearing frame can complement the space between the pump body and the impeller to play sealed effect to the space between the pump body and the impeller, prevent that the water of water inlet from entering into in the space between the pump body and the impeller, lead to the output efficiency of impeller to reduce.

Preferably, the bearing is further provided with a first table top and a second table top, and the diameter of the first table top is smaller than that of the second table top. The bearing is used for thrust to prevent the impeller from axially moving due to axial force when rotating, the second table top of the bearing is used for directly contacting with the bearing seat to play a role in force transmission, the axial force generated by the impeller is transmitted to the bearing seat and then to the pump body, and finally, the axial force is transmitted to the base to achieve a force balance effect. The column body between the first table top and the second table top plays a certain guiding role, so that the bearing can be smoothly matched on the bearing seat.

Preferably, the end of the bearing seat, which is matched with the bearing, is provided with a first concave surface and a second concave surface, the diameter of the first concave surface corresponds to the diameter of the first table top, and the diameter of the second concave surface corresponds to the diameter of the second table top. The first concave surface and the second concave surface on the bearing seat respectively correspond to the diameters of the first table surface and the second table surface of the bearing, so that the bearing seat and the bearing can be ensured to be matched normally, and the bearing is not easy to fall off.

Preferably, the second concave surface is provided with an annular ring for abutting against the second table surface, and the distance between the first concave surface and the second concave surface is not smaller than the distance between the first table surface and the second table surface. The annular ring is positioned on the bearing seat and is in contact fit with the bearing, so that the annular ring can also play a certain sealing role, and the bearing seat is made of rubber material, so that the annular ring has a certain buffering role on the bearing, and the axial force generated by the impeller can be relieved; the distance between the first concave surface and the second concave surface is required to be larger than or equal to the distance between the first table surface and the second table surface, so that on one hand, the first concave surface can be prevented from being in direct contact with the first table surface, the annular ring can be ensured to be in direct contact with the second table surface, the sealing effect is achieved, and the flow leakage is prevented; on the other hand, the bearing is also favorable for being mounted on and dismounted from the bearing seat, and because a gap exists between the first concave surface and the first table top, the bearing can be dismounted from the bearing seat by using a tool from the first table top.

Preferably, the end, matched with the annular groove, of the bearing seat is provided with an annular groove, and a sealing ring is arranged in the annular groove. The annular groove is internally provided with the sealing ring, so that the sealing effect can be achieved between the annular groove of the pump body and the bearing seat, flow leakage is prevented, and the output efficiency of the water pump is reduced.

Preferably, the motor further comprises an impeller and a rotor, wherein the impeller is fixed on the rotor, and comprises an impeller front cover plate, and the impeller front cover plate is abutted with the bearing. The impeller is fixed on the rotor, normal work of the impeller can be guaranteed, the impeller front cover plate is directly contacted with the bearing, an axial force is applied to the bearing, on one hand, the bearing can play a limiting role on the impeller, on the other hand, the impeller can play a fixing role on the bearing, most of water can be led into the impeller to be compressed through direct contact between the impeller and the bearing, flow leakage at the water inlet is reduced to a certain extent, and the output efficiency of the water pump is improved.

Preferably, the motor comprises a motor shell, wherein the motor shell is fixedly connected with the pump body, and a bevel shielding sleeve for a built-in rotor is further fixed between the motor shell and the pump body. The angle shielding sleeve is mainly used for separating the pump body part from the motor part to prevent water in the pump body from entering the motor, so that the motor cannot work normally; meanwhile, the angle shielding sleeve is provided with an angle at the joint of the impeller and the rotor, and a gap is reserved between the angle and the rotor, so that the rotor can rotate conveniently on one hand, and a part of water can enter between the rotor and the angle shielding sleeve on the other hand, so that a certain cooling effect is achieved on the rotor.

Preferably, a positioning shaft for positioning the rotor is arranged in the center of the bevel shielding sleeve. The positioning shaft is used for axially positioning the rotor, so that the rotor can normally rotate, and a water flowing channel is further arranged between the rotor and the positioning shaft and used for cooling the interior of the rotor.

Preferably, a water outlet hole is formed in the middle of the impeller, and the position of the water outlet hole corresponds to the position of the positioning shaft. The water between the rotor and the positioning shaft can be discharged through the water outlet in the middle of the impeller, so that the circulation of a cooling water path is achieved.

Compared with the prior art, the utility model has the beneficial effects that: (1) The leakage quantity at the water inlet of the electronic water pump can be effectively reduced, and the output efficiency of the water pump is increased; (2) The axial force of the impeller rotor can be balanced; (3) The cooling circuit is also provided to cool the internal rotor and other structures of the water pump; (4) Simple structure, convenient production and processing and lower production cost.

Drawings

Fig. 1 is a schematic view of the structure of the electronic water pump.

Fig. 2 is an enlarged view of a in fig. 1.

Fig. 3 is a schematic structural view of the pump body of the present utility model.

Fig. 4 is a schematic view of the bearing housing and bearing of the present utility model.

Fig. 5 is a schematic structural view of the dog-ear shield of the present utility model.

In the figure: 1. the pump body 2, the water inlet 3, the annular groove 4, the bearing seat 5, the bearing 6, the first table top 7, the second table top 8, the first concave surface 9, the second concave surface 10, the annular ring 11, the annular groove 12, the impeller 13, the rotor 14, the motor housing 15, the bevel shielding sleeve 16, the positioning shaft 17, the O-shaped ring 18, the bevel 19, the water outlet hole 20 and the impeller front cover plate.

Detailed Description

The technical scheme of the utility model is further specifically described below through specific embodiments and with reference to the accompanying drawings.

Examples: the bearing seat for the water inlet of the electronic water pump comprises a pump body 1, an annular groove 3 is arranged in a water inlet 2 of the pump body 1, the position of the annular groove 3 is close to the position of an impeller 12 in the pump body 1, a bearing seat 4 is arranged in the annular groove 3, the bearing seat 4 corresponds to the axial position of the impeller 12, a bearing 5 is arranged on the bearing seat 4, the bearing 5 is a thrust bearing, and an impeller front cover plate 20 is directly contacted with the thrust bearing; wherein, pump body 1 water inlet 2 one end reduces gradually along intaking direction opening, on the one hand can guarantee the volume of intaking, and on the other hand, rivers can become fast from big pipe diameter entering little pipe diameter velocity of flow, can improve the pumping efficiency of water pump. The bearing seat 4 is made of rubber material by injection molding, and the bearing seat 4 comprises two concave surfaces: the first concave surface 8 and the second concave surface 9 are used for internally arranging a thrust bearing, the thrust bearing is also provided with a first table top 6 and a second table top 7 corresponding to the first concave surface 8 and the second concave surface 9, an annular ring 10 positioned on the second concave surface 9 is arranged on the contact surface of the second table top 7 and the second concave surface 9, the annular ring 10 can play a certain role in sealing, and the bearing seat 4 is made of rubber material, the annular ring 10 has a certain role in buffering the bearing 5, so that the axial force generated by the impeller 12 can be relieved; in the rotation process of the impeller 12, the impeller 12 generates certain axial force, the impeller front cover plate 20 directly abuts against the bearing 5, the axial force is transmitted to the bearing 5 and then sequentially transmitted to the bearing seat 4, the pump body 1 and the base, and finally a force balance is formed, wherein the bearing 5 plays a role in thrust, the impeller 12 and the rotor 13 are prevented from axially displacing due to rotation, the impeller 12 can also play a limiting role on the thrust bearing, and the thrust bearing is prevented from falling off the bearing seat 4; in this scheme through installing bearing frame 4 and bearing 5 in water pump's water inlet 2 department, can effectually reduce the leakage quantity of water pump at water inlet 2. The front cover plate 20 of the impeller is cylindrical, and the front cover plate 20 of the impeller is partially matched with the annular groove 3, so that flow leakage is greatly reduced, and when water flow enters from the water inlet 2, the water flow sequentially passes through the bearing seat 4 and the thrust bearing and then directly enters the front cover plate 20 of the impeller, then enters the impeller 12 to be compressed and output, and the water flow is prevented from directly entering the volute from the outlet of the water inlet 2 without being compressed. In particular, on the contact surface of the impeller front cover plate and the bearing, the impeller front cover plate is provided with a water inlet groove, and the water inlet groove can enter a small amount of water to play a role in lubrication.

The distance between the first concave surface 8 and the second concave surface 9 on the bearing seat 4 is larger than or equal to the distance from the first table surface 6 to the second table surface 7, or the distance from the first concave surface 8 to the outer edge of the annular ring 10 is larger than the distance from the first table surface 6 to the second table surface 7, mainly in order to ensure that the second table surface 7 contacts with the annular ring 10 and simultaneously separate the first concave surface 8 from the first table surface 6, on one hand, the contact between the second table surface 7 and the annular ring 10 can play a sealing role, and on the other hand, the first concave surface 8 and the first table surface 6 are separated easily, so that the bearing 5 and the bearing seat 4 can be detached easily, wherein, in order to ensure the sealing performance, an O-shaped ring 17 can be arranged between the annular ring 10 and the inner side wall of the bearing seat 4, so that the sealing effect is further enhanced, and the leakage amount of a water inlet of the water pump is reduced. The back of the bearing seat 4, namely the joint surface of the bearing seat 4 and the pump body 1, is provided with an annular groove 11, and a sealing ring (not shown in the figure) can be arranged in the annular groove 11 to seal the bearing seat 4 and the pump body 1 and prevent water of the water inlet 2 from entering the outside of the impeller front cover plate 20. Meanwhile, in the scheme, the bearing seat 4 is independent of the design of the pump body 1, so that the manufacturing difficulty of the pump body 1 can be greatly reduced, and the bearing seat 4 does not need to be independently formed in the pump body 1.

The pump body 1 is connected with the motor shell 14 through bolts, and a bevel shielding sleeve 15 is fixedly clamped between the pump body 1 and the motor shell 14, wherein the bevel shielding sleeve 15 is used for separating a motor part from a water pump part, so that water in the pump body 1 is prevented from entering the motor, short circuit is caused, and the electronic water pump is damaged; the angle shielding sleeve 15 is rotationally connected with the motor rotor 13 through a positioning shaft 16 in the middle of the angle shielding sleeve 15, an angle 18 is arranged at the joint surface of the impeller 12 and the rotor 13, and a gap is reserved between the angle 18 and the rotor 13, so that the rotor 13 can rotate conveniently, and a part of water can enter between the rotor 13 and the angle shielding sleeve 15, so that a certain cooling effect is achieved on the rotor 13. A partial gap is reserved between the rotor 13 and the bevel shielding sleeve 15, a gap for running water is also reserved between the rotor 13 and a positioning shaft 16 in the bevel shielding sleeve 15, and the length of the positioning shaft 16 is smaller than the axial length of the rotor 13; the rotor 13 is directly fixedly connected with the impeller 12, the impeller 12 is arranged corresponding to the water inlet 2 of the pump body 1, a water outlet 19 is also formed in the axial center position of the rotor 13, and the water outlet is a cold water loop in the electronic water pump, so that the cooling effect on the structure of the rotor 13 in the water pump can be achieved.

Claims (8)

1. The electronic water pump water inlet bearing seat is characterized by comprising a pump body, wherein the pump body is provided with a water inlet, an annular groove with the diameter larger than that of the water inlet is arranged in the water inlet, and a bearing seat is embedded in the annular groove; the impeller is fixed on the rotor and comprises an impeller front cover plate, and the impeller front cover plate is abutted with the bearing.

2. The electronic water pump water inlet bearing pedestal of claim 1, wherein the bearing is provided with a first table top and a second table top, and the diameter of the first table top is smaller than the diameter of the second table top.

3. The electronic water pump water inlet bearing seat according to claim 2, wherein the bearing seat and the bearing matching end are provided with a first concave surface and a second concave surface, the first concave surface diameter corresponds to the first table surface diameter, and the second concave surface diameter corresponds to the second table surface diameter.

4. The electronic water pump water inlet bearing seat according to claim 3, wherein the second concave surface is provided with an annular ring for abutting against the second table surface, and the distance between the first concave surface and the second concave surface is not smaller than the distance between the first table surface and the second table surface.

5. The electronic water pump water inlet bearing seat according to any one of claims 1-4, wherein an annular groove is formed at the end of the bearing seat matched with the annular groove, and a sealing ring is arranged in the annular groove.

6. The electronic water pump water inlet bearing seat according to claim 1, further comprising a motor housing, wherein the motor housing is fixedly connected with the pump body, and a bevel shielding sleeve for a built-in rotor is further fixed between the motor housing and the pump body.

7. The water inlet bearing seat of the electronic water pump according to claim 6, wherein a positioning shaft for positioning the rotor is arranged in the center of the bevel shielding sleeve.

8. The electronic water pump water inlet bearing seat according to claim 7, wherein a water outlet hole is formed in the middle of the impeller, and the position of the water outlet hole corresponds to the position of the positioning shaft.