CN206175287U - Electronic pump's thrust device - Google Patents

Abstract

The utility model discloses a thrust device of an electronic water pump, which comprises a water pump housing, a mandrel installed in the water pump housing, a rotor assembly installed on the mandrel, and a stator assembly arranged on the inner wall of the water pump housing. The two ends of the mandrel are respectively supported on the water pump casing by upper and lower bearings, and a thrust ring is provided between the lower end surface of the upper bearing and the upper plane of the rotor assembly, and the upper plane of the thrust ring has at least three circumferentially evenly distributed grooves. The groove is filled with cooling liquid. The utility model provides a groove on the upper surface of the thrust ring and fills the groove with cooling liquid, so that in the working state of the electronic water pump, the cooling liquid can be used to lubricate the relative friction surface of the upper bearing and the thrust ring. Thereby reducing friction loss and improving the service life of the thrust ring.

Description

Thrust device for electronic water pump

technical field

The utility model relates to a thrust device of an electronic water pump.

Background technique

Electronic water pumps usually operate in a vertical state. Due to the action of fluid pressure, a large pulling force will be generated between the rotor assembly and the bearing. The way to improve the stability of the rotor assembly operation. In the thrust structure of the existing electronic water pump, the joint between the thrust ring and the lower end surface of the bearing is in plane contact. When the water pump is running, since there is no gap between the thrust ring and the lower end surface of the bearing, the thrust ring is always in a dry friction state , The thrust ring under pressure is easy to wear.

Utility model content

The technical problem to be solved by the utility model is: to overcome the deficiencies in the prior art, and provide a thrust device of an electronic water pump which reduces friction loss and improves the service life of the thrust ring.

The technical scheme adopted by the utility model to solve the technical problem is: a thrust device of an electronic water pump, including a water pump housing, a mandrel installed in the water pump housing, a rotor assembly installed on the mandrel, and a rotor assembly installed on the water pump housing. The inner wall of the stator assembly, the two ends of the mandrel are respectively supported on the water pump housing through the upper and lower bearings, a thrust ring is provided between the lower end surface of the upper bearing and the upper plane of the rotor assembly, and the thrust ring is The plane has at least three circumferentially evenly distributed grooves, and the grooves are filled with cooling liquid.

Preferably, the upper plane of the thrust ring has three circumferentially uniform grooves, and the grooves extend from the periphery of the thrust ring to the center of the thrust ring.

Further, a concave ring is fixed on the upper plane of the rotor assembly, and the thrust ring is fixed in the concave ring.

The beneficial effects of the utility model are: the utility model provides a groove on the upper surface of the thrust ring and fills the coolant in the groove, so that the upper bearing and the bearing can be better lubricated by the coolant in the working state of the electronic water pump. The frictional surface of the thrust ring reduces friction loss and improves the service life of the thrust ring.

Description of drawings

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

Fig. 1 is a structural representation of the utility model.

In the figure 1. Water pump housing 2. Mandrel 3. Rotor assembly 4. Stator assembly 5. Upper bearing 6. Lower bearing 7. Thrust ring 8. Groove 9. Coolant 10. Concave ring

detailed description

The utility model is described further in conjunction with accompanying drawing now. These drawings are simplified schematic diagrams only to illustrate the basic structure of the utility model in a schematic way, so they only show the configurations related to the utility model.

A thrust device for an electronic water pump as shown in FIG. The stator assembly 4 of the inner wall, the two ends of the mandrel 2 are respectively supported on the water pump housing 1 through the upper and lower bearings 5, 6, wherein a thrust ring is provided between the lower end surface of the upper bearing 5 and the upper plane of the rotor assembly 3 7. A concave ring 10 is fixed on the upper plane of the rotor assembly 3, and the thrust ring 7 is fixed in the concave ring 10. The upper plane of the thrust ring 7 has three grooves 8 uniformly distributed in the circumferential direction. The groove 8 extends from the periphery of the thrust ring 7 to the center of the thrust ring 7 , and the groove 8 is filled with cooling liquid 9 .

The utility model provides a groove 8 on the upper surface of the thrust ring 7 and fills the cooling liquid 9 in the groove 8. Under the working state of the electronic water pump, due to the friction end surface between the thrust ring 7 and the lower end surface of the upper bearing 5 has There is a gap between the grooves 8, and the grooves 8 are filled with coolant 9, so that when friction occurs, the coolant 9 can well lubricate the frictional surfaces of the upper bearing 5 and the thrust ring 7, thereby reducing friction loss , improve the service life of the thrust ring 7.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present utility model. Equivalent changes or modifications made by the spirit of the present utility model shall be covered within the protection scope of the present utility model.

Claims (3)

1. A thrust device for an electronic water pump, comprising a water pump housing (1), a mandrel (2) installed in the water pump housing (1), a rotor assembly (3) installed on the mandrel (2) and The stator assembly (4) arranged on the inner wall of the water pump housing (1) is characterized in that: the two ends of the mandrel (2) are respectively supported on the water pump housing (1) by upper and lower bearings (5) and (6). ), a thrust ring (7) is provided between the lower end surface of the upper bearing (5) and the upper plane of the rotor assembly (3), and the upper plane of the thrust ring (7) has at least three circumferentially uniform grooves ( 8), the groove (8) is filled with cooling liquid (9). 2. The thrust device of the electronic water pump according to claim 1, characterized in that: the upper plane of the thrust ring (7) has three circumferentially evenly distributed grooves (8), and the grooves (8) ) extends from the periphery of the thrust ring (7) to the center of the thrust ring (7). 3. The thrust device of the electronic water pump according to claim 2, characterized in that: the upper plane of the rotor assembly (3) is fixed with a concave ring (10), and the thrust ring (7) is fixed on Inside the concave ring (10).