Water pump with plastic body oil bearing

Abstract

The utility model relates to water pump device field discloses a water pump with plastic body oil bearing, including motor shell, pump body shell, shaft coupling and three plastic body oil main part, the inside rotation of motor shell is equipped with motor rotating shaft, the outer surface of motor rotating shaft is equipped with a bearing away from the one end of pump body shell, the outer surface of motor rotating shaft is equipped with the bearing of no. 2 close to the one end of pump body shell, the inside rotation of a bearing is equipped with a plurality of deep groove ball roller, the inside rotation of no. 2 bearing is equipped with a plurality of cylindrical roller, the inside rotation of pump body shell is equipped with a plurality of pump body rotating shaft, the outer surface of pump body rotating shaft is equipped with the bearing of no. 3 away from the one end of motor shell, the inside rotation of no. 3 bearing is equipped with a plurality of thrust aligning roller. In the utility model, the water pump can effectively avoid the negative influence of moisture on bearing lubricating property, and ensure the stable operation of water pump.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump device field especially relates to a water pump with plastic body oil bearing. BACKGROUND

[0002] Water pump is the mechanical of conveying liquid or making liquid pressure, through the mechanical energy or other external energy of prime mover is sent to liquid, increases liquid energy, mainly used for conveying water, oil, acid and alkali liquid, liquid metal etc., also can convey liquid and gas mixture and contain the liquid of suspending solid.

[0003] As for the current water pump, the ordinary bearing is often used to build the running part of water pump, in order to ensure the normal operation of water pump, the bearing part of water pump needs to be sealed by mechanical seal or oil seal, however, although these sealing measures can prevent water from entering water pump to a certain extent, but their sealing effect still has certain limitation, when water pump contacts water in actual use, especially works in water, a small amount of water may penetrate into water pump, and the water in ordinary bearing may affect the lubrication effect of bearing, even may affect the normal operation and service life of water pump.

[0004] Therefore, the technical personnel in the prior art provides a water pump with plastic body oil bearing to solve the problems in the background art. CONTENT OF THE UTILITY MODEL

[0005] The utility model discloses a water pump with plastic body oil bearing, which can effectively avoid the negative influence of water on the lubrication performance of the bearing and ensure the stable operation of the water pump.

[0006] To achieve the above object, the utility model provides the following technical scheme. A water pump with plastic body oil bearing, comprising a motor shell, a pump body shell, a shaft coupling and three plastic body oil bodies, a motor rotating shaft is rotatably arranged in the motor shell, a first bearing is rotatably arranged on the outer surface of the motor rotating shaft away from the pump body shell, a second bearing is rotatably arranged on the outer surface of the motor rotating shaft close to the pump body shell, a plurality of deep groove ball rollers are rotatably arranged in the first bearing, a plurality of cylindrical rollers are rotatably arranged in the second bearing, a plurality of pump body rotating shafts are rotatably arranged in the pump body shell, a third bearing is rotatably arranged on the outer surface of the pump body rotating shaft away from the motor shell, and a plurality of thrust angular contact rollers are rotatably arranged in the third bearing.

[0007] Further, the motor shell is fixedly connected with the pump body shell, and the three plastic body oil bodies are fixedly arranged in the first bearing, the second bearing and the third bearing respectively.

[0008] Further, the outer ring of the first bearing is fixedly sleeved in the inner wall of the motor shell away from the pump body shell, and the inner ring of the first bearing is sleeved on the outer surface of the motor rotating shaft.

[0009] Further, the outer ring of the second bearing is fixedly sleeved in the inner wall of the motor shell close to the pump body shell, and the inner ring of the second bearing is sleeved on the outer surface of the motor rotating shaft.

[0010] Further, the outer ring of the third bearing is fixedly sleeved in the inner wall of the pump body shell away from the motor shell, and the inner ring of the third bearing is sleeved on the outer surface of the pump body rotating shaft.

[0011] Further, the coupling is fixedly sleeved on the outer surfaces of the motor rotating shaft and the pump body rotating shaft, and is located between the motor shell and the pump body shell.

[0012] Further, the pump body rotating shaft is fixedly sleeved with a multi-stage pump at the middle position of the outer surface, and the outer surface of the pump body shell is respectively provided with an inlet and an outlet on both sides.

[0013] The utility model has the advantages of the following beneficial effects: The water pump has the first bearing, the second bearing and the third bearing, all of which are plastic oil bearings, and plastic oil is filled between the inner and outer rings, so that the plastic oil cannot leak and has good lubricity, the lubricating effect of the bearing in water can be ensured, the plastic oil can be adapted to deep groove ball rollers, cylindrical rollers and thrust self-aligning rollers, the actual needs of bearings at different positions in the water pump can be met, the redundant sealing structure can be saved, the normal operation of the bearing in water can be ensured, and the normal operation and service life of the water pump are ensured. DRAWINGS

[0014] Figure 1 It is a shaft side schematic view of the utility model; Figure 2 It is a sectional view schematic view of the utility model; Figure 3 It is a shaft side schematic view of the first bearing in the utility model; Figure 4 It is a sectional view shaft side schematic view of the second bearing in the utility model; Figure 5 It is a sectional view shaft side schematic view of the third bearing in the utility model.

[0015] Legend: 1, motor housing; 2, motor shaft; 3, bearing No. 1; 4, deep groove ball roller; 5, bearing No. 2; 6, cylindrical roller; 7, pump body shell; 8, multi-stage pump; 9, pump body shaft; 10, shaft coupling; 11, bearing No. 3; 12, thrust aligning roller; 13, plastic body oil body. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0017] Referring to Figures 1-5 The utility model provides an embodiment: a kind of water pump with plastic body oil bearing, including motor housing 1, pump body shell 7, shaft coupling 10 and three plastic body oil body 13, motor housing 1 is rotationally sleeved with motor shaft 2 in the inside, the outer surface of motor shaft 2 is rotationally sleeved with bearing No. 1 3 in the end away from pump body shell 7, the outer surface of motor shaft 2 is sleeved with bearing No. 2 5 in the end close to pump body shell 7, the inside of bearing No. 3 3 is rotationally sleeved with multiple deep groove ball roller 4, the inside of bearing No. 5 5 is rotationally sleeved with multiple cylindrical roller 6, the inside of pump body shell 7 is rotationally sleeved with multiple pump body shaft 9, the outer surface of pump body shaft 9 is sleeved with bearing No. 3 11 in the end away from motor housing 1, the inside of bearing No. 11 11 is rotationally sleeved with multiple thrust aligning roller 12; Motor housing 1 is fixedly connected with pump body shell 7, three plastic body oil body 13 are fixedly sleeved in bearing No. 3 3, bearing No. 5 5 and bearing No. 11 11 respectively, the outer ring of bearing No. 3 3 is fixedly sleeved in the inner wall of motor housing 1 on the side away from pump body shell 7, the inner ring of bearing No. 3 3 is sleeved in the outer surface of motor shaft 2, the outer ring of bearing No. 5 5 is fixedly sleeved in the inner wall of motor housing 1 on the side close to pump body shell 7, the inner ring of bearing No. 5 5 is sleeved in the outer surface of motor shaft 2; The outer ring of bearing No. 11 11 is fixedly sleeved in the inner wall of pump body shell 7 on the side away from motor housing 1, the inner ring of bearing No. 11 11 is sleeved in the outer surface of pump body shaft 9, shaft coupling 10 is fixedly sleeved in the outer surface of motor shaft 2 and pump body shaft 9, the shaft coupling 10 is located between motor housing 1 and pump body shell 7, multiple multi-stage pumps 8 are fixedly sleeved in the outer surface of pump body shaft 9 in the middle position, water inlet and water outlet are respectively formed in the outer surface of pump body shell 7 on both sides.

[0018] Specific, motor housing 1 is the outermost part of the motor, inside the motor stator and motor rotor, motor shaft 2 fixedly provided in the middle of the motor rotor, can rotate with the rotor, pump body shell 7 for packaging multistage pump 8, multistage pump 8 is composed of a plurality of impellers, pump shaft 9 and motor shaft 2 through the shaft coupling 10 connected, so as to realize the synchronous rotation of the two, pump body shell 7 surface near the three bearing 11 for the water inlet, away from the three bearing 11 for the water outlet; The first bearing 3, the second bearing 5 and the third bearing 11 are plastic oil bearings, and the interiors of the bearings are filled with plastic oil bodies 13. The plastic oil body 13 is a kind of lubricating material adopting high polymer matrix technology, and its core feature is that the lubricating oil is encapsulated through a microporous structure, so that the lubricating oil cannot leak, the bearings can normally operate in water, and the bearings have good lubricity, realizing maintenance-free and long-life bearing lubrication. The first bearing 3 is located at the non-driving end of the motor shaft 2, the rollers in the first bearing 3 are single-row arranged steel ball-shaped deep groove ball rollers 4, which can simultaneously bear radial and bidirectional loads, have small friction, and can ensure the rapid rotation of the motor shaft 2. The second bearing 5 is located at the driving end of the motor shaft 2, the rollers in the second bearing 5 are double-row cylindrical rollers 6, which have strong radial bearing capacity and can ensure the smooth rotation of the motor shaft 2 and the pump shaft 9. The third bearing 11 is located at the end of the pump shaft 9 away from the motor, and the rollers in the third bearing 11 are double-row thrust self-aligning rollers 12, which have a spherical raceway design and can automatically align, mainly bear axial load, adapt to the deflection between the pump shaft 9 and the pump body shell 7, and can also bear part of the radial load.

[0019] It should be noted that the bearings formed of the plastic oil in the utility model can be used in other positions in the water pump in addition to the above three positions.

[0020] Working principle: when the motor starts to work, the stator is energized, drives the rotor to rotate at high speed under the action of magnetic force, the motor shaft 2 also rotates, the pump shaft 9 also rotates because the motor shaft 2 and the pump shaft 9 are connected through the shaft coupling 10, the impeller in the multistage pump 8 can be driven to rotate, the directional flow of water is driven by the rotation of the impeller, water enters the pump body shell 7 from the water inlet, is pressurized by the multistage pump 8, and is discharged from the water outlet, realizing the water pumping function of the water pump. In the above process, the first bearing 3 provided with the deep groove ball roller 4 can ensure the rapid rotation of the motor shaft 2, the second bearing 5 provided with the cylindrical roller 6 can ensure the stable synchronous rotation of the motor shaft 2 and the pump shaft 9, and the third bearing 11 provided with the thrust self-aligning roller 12 can adapt to various complex situations in the directional flow process of the water driven by the impeller.

[0021] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A water pump with a plastic oil bearing, comprising a motor housing (1), a pump housing (7), a coupling (10), and three plastic oil bodies (13), characterized in that: The motor housing (1) is fitted with a motor shaft (2) inside. The end of the outer surface of the motor shaft (2) away from the pump housing (7) is fitted with a No. 1 bearing (3). The end of the outer surface of the motor shaft (2) close to the pump housing (7) is fitted with a No. 2 bearing (5). The No. 1 bearing (3) is fitted with multiple deep groove ball rollers (4). The No. 2 bearing (5) is fitted with multiple cylindrical rollers (6). The pump housing (7) is fitted with multiple pump shafts (9). The end of the outer surface of the pump shaft (9) away from the motor housing (1) is fitted with a No. 3 bearing (11). The No. 3 bearing (11) is fitted with multiple thrust self-aligning rollers (12).

2. A water pump with a plastic oil bearing according to claim 1, characterized in that: The motor housing (1) is fixedly connected to the pump housing (7), and the three plastic oil bodies (13) are respectively fixedly sleeved in the first bearing (3), the second bearing (5) and the third bearing (11).

3. A water pump with a plastic oil bearing according to claim 1, characterized in that: The outer ring of the No. 1 bearing (3) is fixedly sleeved in the inner wall of the motor housing (1) on the side away from the pump housing (7), and the inner ring of the No. 1 bearing (3) is sleeved on the outer surface of the motor shaft (2).

4. A water pump with a plastic oil bearing according to claim 1, characterized in that: The outer ring of the No. 2 bearing (5) is fixedly sleeved in the inner wall of the motor housing (1) on the side close to the pump housing (7), and the inner ring of the No. 2 bearing (5) is sleeved on the outer surface of the motor shaft (2).

5. A water pump with a plastic oil bearing according to claim 1, characterized in that: The outer ring of the No. 3 bearing (11) is fixedly sleeved in the inner wall of the pump body housing (7) on the side away from the motor housing (1), and the inner ring of the No. 3 bearing (11) is sleeved on the outer surface of the pump body shaft (9).

6. A water pump with a plastic oil bearing according to claim 1, characterized in that: The coupling (10) is fixedly sleeved on the outer surface of the motor shaft (2) and the pump body shaft (9), and the coupling (10) is located between the motor housing (1) and the pump body housing (7).

7. A water pump with a plastic oil bearing according to claim 1, characterized in that: A multi-stage pump (8) is fixedly mounted on the middle position of the outer surface of the pump body shaft (9), and an inlet and an outlet are respectively opened on both sides of the outer surface of the pump body shell (7).

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