CN212985536U - Water pump - Google Patents

Abstract

The utility model provides a water pump, include: the shell is provided with an accommodating cavity, and the rotating assembly is rotatably arranged in the accommodating cavity; the rotating assembly comprises a rotating shaft and a bearing sleeved on the rotating shaft, and the rotating shaft is used for providing a rotating driving force; and an oil inlet channel is arranged on the shell, is communicated with the accommodating cavity and is used for introducing lubricating oil into the accommodating cavity so as to lubricate the bearing. The utility model provides a water pump can be reliable lubricate the bearing, avoids bearing high temperature inefficacy, and the security of water pump operation is higher.

Description

Water pump

Technical Field

The utility model relates to a fluid machinery technique especially relates to a water pump.

Background

The water pump is a machine for conveying liquid or pressurizing liquid, has wide application, the maintenance of the water pump is an important guarantee for the production safety, and the good lubrication of the bearing is the key for the long-term stable operation of the water pump.

The existing water pump mostly adopts a splash lubrication mode to lubricate a bearing, the water pump comprises a shell, a rotating assembly and a driving gear, the driving gear is located outside the shell, the driving gear can be meshed with an external transmission gear train to drive the water pump, an oil inlet channel and an accommodating cavity are arranged on the shell, lubricating oil is sprayed on the transmission gear train, the transmission gear train drives the driving gear to rotate at a high speed, the lubricating oil splashes due to centrifugal force generated by high-speed rotation of the transmission gear train and enters the oil inlet channel on the shell, the oil inlet channel is communicated with the accommodating cavity, and the lubricating oil enters the accommodating cavity through the oil.

However, the existing water pump has high rotating speed, the load of the bearing is overlarge, the oil supply amount of splash lubrication is small and difficult to adjust, the insufficient lubrication of the bearing is easy to cause high-temperature failure, and potential safety hazards are generated.

Disclosure of Invention

The utility model provides a water pump can be reliable lubricate the bearing, and the security of water pump operation is higher.

In order to achieve the above object, the present invention provides a water pump, which comprises a housing and a rotating assembly, wherein the housing is provided with an accommodating cavity, and the rotating assembly is rotatably arranged in the accommodating cavity; the rotating assembly comprises a rotating shaft and a bearing sleeved on the rotating shaft, and the rotating shaft is used for providing a rotating driving force. And an oil inlet channel is arranged on the shell, is communicated with the accommodating cavity and is used for introducing lubricating oil into the accommodating cavity so as to lubricate the bearing.

Optionally, the water pump provided by the utility model includes a housing and an end cover, the housing and the end cover together enclose an accommodating cavity; the water pump also comprises an oil seal; the inner walls of the oil seal, the end cover, the rotating shaft and the accommodating cavity jointly enclose an oil path space, and the bearing is located in the oil path space.

Optionally, the utility model provides a pair of water pump, bearing are a plurality of, and rotating assembly still including setting up the retaining ring between two adjacent bearings, are provided with the through-hole with oil feed passageway intercommunication on the retaining ring.

Optionally, the utility model provides a pair of water pump, through-hole are a plurality ofly, and distribute along the circumference of retaining ring, the inside and outside both sides of through-hole intercommunication retaining ring.

Optionally, the utility model provides a pair of water pump, bearing include first bearing and second bearing, and first bearing, retaining ring and second bearing set gradually from inside to outside along the axial of rotation axis, and the oil feed passageway is located one side that is close to first bearing of retaining ring.

Optionally, the utility model provides a pair of water pump, retaining ring have along the radial inward protruding backstop portion of rotation axis, backstop portion are located one side towards the second bearing of retaining ring.

Optionally, in the water pump provided by the present invention, the inner wall of the accommodating cavity is provided with a first groove and a second groove, and both the first groove and the second groove are led to the outside of the accommodating cavity;

the first groove extends along the axial direction of the rotating shaft and is communicated with the oil inlet channel;

the second groove and the first groove are arranged along different circumferential directions of the rotating shaft, the second groove extends to the mounting end face of the accommodating cavity, and the mounting end face is abutted to the end face of the oil seal.

Optionally, the utility model provides a pair of water pump has the clearance between the terminal surface of first bearing and the oil blanket.

Optionally, the utility model provides a pair of water pump still includes and supplies oil pipe, supplies oil pipe and oil feed access connection for provide lubricating oil to the oil feed passageway.

Optionally, the utility model provides a pair of water pump, water pump still include drive gear and impeller, and drive gear and impeller all are located the holding chamber outside, and drive gear and impeller respectively with two relative end connection of rotation axis, drive gear can mesh with outside transmission gear train to drive rotation axis and impeller rotation.

The water pump that this embodiment provided, through set up the oil feed passageway on the casing, the pressure of holding intracavity on the casing has been reduced, avoid holding intracavity oil pressure too big and damage the rotating assembly who is located the holding intracavity, the oil feed passageway is connected with the outside confession oil pipe of casing, supply oil pipe provides lubricating oil to the oil feed passageway, compare with traditional splash lubrication like this, the supply that lubricating oil can be stable, supply oil quantity easily adjusts simultaneously, thereby realize the reliable lubrication to the bearing, avoid the bearing lubrication insufficient and high temperature inefficacy, the security of improvement water pump operation.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings needed to be used in the description of the embodiments or the prior art, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic view of an overall structure of a water pump according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of an overall structure of a water pump according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of the housing of fig. 2.

Description of reference numerals:

100-a water pump;

110-a housing;

111-a housing;

1111-a first groove;

1112-a receiving cavity;

1113-second recess;

1114 — an oil inlet channel;

1115-a mounting end face;

112-an end cap;

120-a rotating assembly;

121-rotation axis;

122-a second bearing;

123-a retainer ring;

1231-outer collar;

1232-inner collar;

1233-a stop;

124-a first bearing;

130-a drive gear;

140-an impeller;

150-oil seal.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection through an intermediary, a connection between two elements, or an interactive relationship between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The existing water pump mostly adopts a splash lubrication mode to lubricate a bearing, the water pump comprises a shell, a rotating assembly and a driving gear, the driving gear is located outside the shell, the driving gear can be meshed with an external transmission gear train to drive the water pump, an oil inlet channel and an accommodating cavity are arranged on the shell, lubricating oil is sprayed on a transmission gear system, the transmission gear train drives the driving gear to rotate at a high speed, the lubricating oil splashes due to centrifugal force generated by high-speed rotation of the transmission gear train and enters the oil inlet channel on the shell, the oil inlet channel is communicated with the accommodating cavity, and the lubricating oil enters the accommodating cavity through. However, the rotating speed of the water pump is high, the load of the bearing is overlarge, the oil supply amount of splash lubrication is difficult to adjust, the bearing lubrication is insufficient, high-temperature failure is easy to cause, and potential safety hazards are generated.

The utility model provides a water pump makes the fuel delivery easily adjust, avoids bearing high temperature inefficacy, improves the security of water pump operation.

The present invention will be described with reference to the accompanying drawings and specific embodiments.

Fig. 1 is the embodiment of the present invention provides a schematic overall structure diagram of a water pump. Fig. 2 is an overall structure cross-sectional view of a water pump provided by the embodiment of the present invention. Referring to fig. 1 and 2, the present invention provides a water pump, which includes a housing 110 and a rotating assembly 120, wherein the housing 110 has an accommodating chamber 1112, and the rotating assembly 120 is rotatably disposed in the accommodating chamber 1112; the rotating assembly 120 includes a rotating shaft 121 and a bearing disposed on the rotating shaft 121, and the rotating shaft 121 is used for providing a rotating driving force.

An oil inlet channel 1114 is arranged on the housing 110, and the oil inlet channel 1114 is communicated with the accommodating cavity 1112 and is used for introducing lubricating oil into the accommodating cavity 1112 so as to lubricate the bearing.

The plane perpendicular to the center line of the accommodating cavity 1112 is taken as a cross section, the cross section of the accommodating cavity 1112 may be circular, rectangular, oval or polygonal, and the cross section of the accommodating cavity 1112 is not limited in this embodiment.

In a specific implementation, the water pump 100 includes a housing 110 and a rotating assembly 120, a receiving cavity 1112 is disposed on the housing 110, and the receiving cavity 1112 provides a receiving space for the rotating assembly 120, so that the rotating assembly 120 is received in the receiving cavity 1112. The rotating assembly 120 includes a rotating shaft 121 and a bearing disposed on the rotating shaft 121, the rotating shaft 121 in the rotating assembly 120 extends through the entire accommodating cavity 1112 and extends to the outside of the housing 110, the rotating shaft 121 provides a rotating driving force for the rotating assembly 120, and the inner and outer rings of the bearing disposed on the rotating shaft 121 correspondingly rotate to be supported between the fixed housing 110 and the rotating shaft 121.

In order to enable lubricating oil to enter the housing 110 from the outside of the housing 110, an oil inlet channel 1114 is arranged on the housing 110, the oil inlet channel 1114 extends from the outer side wall of the housing 110 to the accommodating cavity 1112, one end of the oil inlet channel 1114, facing the outside of the housing, is connected with an oil receiving pipe outside the housing, one end of the oil inlet channel 1114, facing the inside of the housing, is communicated with the accommodating cavity 1112, and the lubricating oil flows into the accommodating cavity 1112 from the oil receiving pipe outside the housing 110 through the oil inlet channel 1114 to lubricate the rotating assembly 120 located in the accommodating cavity 1112.

The water pump that this embodiment provided, through set up oil feed passageway 1114 on casing 110, the pressure in holding chamber 1112 on casing 110 has been reduced, avoid holding chamber 1112 in the too big and damage the oil blanket 150 that is located holding chamber 1112, oil feed passageway 1114 is connected with the outside oil supply pipe of casing 110, the oil supply pipe provides lubricating oil to oil feed passageway 1114, compare with traditional splash lubrication like this, the supply that lubricating oil can be stable, the oil feeding volume is easily adjusted simultaneously, thereby realize the reliable lubrication to the bearing, avoid the bearing lubrication insufficient and high temperature failure, improve the security of water pump 100 operation.

With continued reference to fig. 2, as an alternative embodiment, in the water pump provided in the present embodiment, the housing 110 includes an outer shell 111 and an end cover 112, and the outer shell 111 and the end cover 112 together enclose the receiving cavity 1112; the water pump 100 also includes an oil seal 150; the oil seal 150, the end cover 112, the rotating shaft 121 and the inner wall of the accommodating cavity 1112 jointly enclose an oil path space, and the bearing is located in the oil path space.

Wherein, end cover 112 is located the tip of shell 111, be equipped with rotary channel on the end cover 112, the rotary shaft 121 stretches out the casing 110 outside through rotary channel on the end cover 112, and rotary channel on the end cover 112 is equipped with the clearance with the lateral wall of rotary shaft 121, the side of end cover 112 towards shell 111 is the medial surface, the side that end cover 112 deviates from shell 111 is the lateral surface, the medial surface of end cover 112 and the terminal surface butt of shell 111, end cover 112 is set up through the tip at shell 111, with closed holding chamber 1112, avoid impurity such as dust to get into in the holding chamber 1112.

The housing 111 and the end cover 112 together form a receiving cavity 1112, and the receiving cavity 1112 provides a receiving space for the rotating component 120, so that the rotating component 120 can be received in the receiving cavity 1112.

Optionally, the water pump 100 further includes an oil seal 150, the oil seal 150 is located inside the accommodating cavity 1112, the oil seal 150 is provided with a mounting hole, the oil seal 150 is sleeved on the rotating shaft 121 through the mounting hole, and the oil seal 150 is disposed inside the accommodating cavity 1112 to prevent the lubricating oil from overflowing from the joint of the accommodating cavity 1112.

The oil seal 150, the end cover 112, the rotating shaft 121 and the inner wall of the accommodating cavity 1112 jointly enclose an oil path space, the bearing is sleeved on the rotating shaft 121 and located in the oil path space, and lubricating oil enters the accommodating cavity 1112 through the oil inlet channel 1114 and then fills the whole oil path space, so that the lubricating oil circularly flows in the oil path space, and the bearing is fully lubricated.

With continued reference to fig. 2, in an alternative embodiment, the water pump provided in this embodiment includes a plurality of bearings, and the rotating assembly 120 further includes a retainer ring 123 disposed between two adjacent bearings, and the retainer ring 123 is provided with a through hole communicated with the oil inlet channel 1114.

Wherein, the bearing among the rotating assembly 120 contains two or more, the rotation axis 121 is all located to a plurality of bearings cover, retaining ring 123 is located between two arbitrary adjacent bearings, it is exemplary, this embodiment bearing is two, retaining ring 123 is located between two adjacent bearings, retaining ring 123 carries out axial positioning to two adjacent bearings, retaining ring 123 includes outer retainer ring 1231 and interior retainer ring 1232, be equipped with the through-hole on the outer retainer ring 1231, lubricating oil gets into behind the holding chamber 1112 through oil feed passageway 1114, flow into in the through-hole of outer retainer ring 1231, lubricating oil gets into and divides into two tunnel behind the outer retainer ring 1231 inboard, get into two adjacent bearings respectively in, therefore, not only can carry out axial positioning to two adjacent bearings, prevent two adjacent bearing axial friction, and can also make lubricating oil enter into inside the bearing, lubricated bearing.

As shown in fig. 2, optionally, in the water pump provided in this embodiment, the through holes are multiple and distributed along the circumferential direction of the retainer ring 123, and the through holes communicate with the inner side and the outer side of the retainer ring 123.

Wherein, the through-hole on outer retainer ring 1231 can be more than two or two, rotation axis 121 circumference distributes is followed to a plurality of through-holes, be equipped with the interval between two arbitrary adjacent through-holes, the through-hole extends to outer retainer ring 1231's inside wall from outer retainer ring 1231's lateral wall, the through-hole makes the inside and outside both sides intercommunication of retaining ring 123, lubricating oil gets into behind the holding chamber 1112 through oil feed passageway 1114, lubricating oil is by outer wall through the inside that the through-hole flowed into retaining ring 123 of outer retainer ring 1231, therefore, make the inboard lubricating oil of entering retaining ring 123 along rotation axis 121 circumference evenly distributed, avoid lubricating oil to gather and make the bearing produce local high temperature and become invalid.

With reference to fig. 2, optionally, in the water pump provided in this embodiment, the bearing includes a first bearing 124 and a second bearing 122, the first bearing 124, the retainer ring 123, and the second bearing 122 are sequentially disposed from inside to outside along the axial direction of the rotating shaft 121, and the oil inlet channel 1114 is located on a side of the retainer ring 123 close to the first bearing 124.

The first bearing 124 and the second bearing 122 may be a deep groove ball bearing, a cylindrical roller bearing, a self-aligning roller bearing, a needle bearing, a spiral roller bearing, an angular contact ball bearing, a tapered roller bearing, or the like, which is not limited herein.

For example, the first bearing 124 may be an angular contact ball bearing, the angular contact ball bearing may simultaneously bear an axial force and a radial force, the angular contact ball bearing includes an outer ring, an inner ring, and a spherical roller, a raceway is disposed in the middle of an inner wall surface of the outer ring, the outer wall surface of the inner ring is provided with a raceway spherical roller corresponding to the raceway on the outer ring, the spherical roller is located in the raceway, the spherical roller is in point contact with the raceway, a force-bearing point of the spherical roller is that a connecting line of an upper contact point and a lower contact point has a certain included angle with the radial direction, the included angle is a contact angle, contact angles of the angular contact ball bearing. For example, the second bearing 122 may be a single-row cylindrical roller bearing, the single-row cylindrical roller bearing includes an outer ring, an inner ring locking ring, and a cylindrical roller, a raceway is disposed in the middle of an inner wall surface of the outer ring, a raceway corresponding to the raceway on the outer ring is disposed on an outer wall surface of the inner ring locking ring, the cylindrical roller is located in the raceway, and the cylindrical roller and the raceway are in line contact, so that the radial bearing capacity is large, and the single-row cylindrical roller bearing is suitable for bearing heavy load and impact load. The first bearing 124, the retainer ring 123 and the second bearing 122 are sequentially arranged from the inside of the accommodating cavity 1112 to the outside of the accommodating cavity 1112 in the axial direction of the rotating shaft 121, the inner side surface of the end cover 112 is abutted to the end surface of the outer ring of the second bearing 122, so that the first bearing 124, the retainer ring 123 and the second bearing 122 are prevented from axially jumping along the rotating shaft 121, the oil inlet channel 1114 is located at one side close to the first bearing 124, the first bearing 124 is located at one end close to the inner side of the accommodating cavity 1112, therefore, the oil inlet channel 1114 is close to the inner side of the accommodating cavity 1112, lubricating oil flows from the inner side of the accommodating cavity 1112 to the outer side of the accommodating cavity 1112, so that the bearing located in.

With continued reference to fig. 2, in the water pump provided in the present embodiment, the retainer ring 123 has a stopper 1233 extending inward in the radial direction of the rotating shaft 121, and the stopper 1233 is located on the side of the retainer ring 123 facing the second bearing 122.

The outer retainer 1231 of the retainer ring 123 extends radially inward along the rotating shaft 121, the height of the retainer portion 1233 is smaller than the radial gap between the outer retainer 1231 and the inner retainer 1232, and the retainer portion 1233 is located on one side of the retainer ring 123 facing the second bearing 122, so that the lubricating oil entering the accommodating cavity 1112 can more easily enter the first bearing 124, and poor lubrication of the first bearing 124 is avoided.

Fig. 3 is a cross-sectional view of the housing of fig. 2. Referring to fig. 3, as an alternative embodiment, in the water pump provided in this embodiment, a first groove 1111 and a second groove 1113 are provided on an inner wall of the accommodating cavity 1112, and both the first groove 1111 and the second groove 1113 open to the outside of the accommodating cavity 1112.

The first groove 1111 extends in the axial direction of the rotating shaft 121, and the first groove 1111 communicates with the oil inlet passage 1114.

The second groove 1113 and the first groove 1111 are provided in different circumferential directions of the rotary shaft 121, and the second groove 1113 extends to a mounting end surface 1115 of the accommodation chamber 1112, wherein the mounting end surface 1115 abuts against an end surface of the oil seal 150.

Wherein, be equipped with first recess 1111 and second recess 1113 on the inner wall of holding chamber 1112, first recess 1111 and second recess 1113 set up along the different direction of circumference of rotation axis 121, first recess 1111 is located the upper portion of holding chamber 1112, first recess 1111 extends to the terminal surface department of shell 111 along the axial of rotation axis 121 by the inboard of holding chamber 1112, first recess 1111 and oil feed passageway 1114 intercommunication make the lubricating oil that gathers in the holding chamber 1112 can pass through the clearance between shell 111 and the end cover 112 in time to discharge along the extending direction of first recess 1111. The second groove 1113 is located at the lower part of the accommodating cavity 1112, the second groove 1113 extends from the end surface of the housing 111 to the mounting end surface 1115 of the accommodating cavity 1112, the mounting end surface 1115 abuts against the end surface of the oil seal 150, so that a gap is left between the first bearing 124 and the oil seal 150, the lubricating oil between the first bearing 124 and the oil seal 150 is discharged, and the lubricating oil is discharged out of the water pump 100 through the gap between the housing 111 and the end cover 112 along the extending direction of the second groove 1113. Therefore, the lubricating oil entering the accommodating cavity 1112 has good fluidity, and the lubricating oil is prevented from being gathered at one position, so that the bearing generates local high temperature.

With continued reference to fig. 2, in the alternative embodiment, the water pump is provided with a gap between the end face of the first bearing 124 and the oil seal 150.

The function of having a gap between the end surface of the first bearing 124 and the oil seal 150 has been described in detail in the above embodiments, and is not described in detail here.

Optionally, the water pump provided in this embodiment further includes an oil supply pipe, and the oil supply pipe is connected to the oil inlet channel 1114 and is used for providing lubricating oil to the oil inlet channel 1114.

The oil supply pipe may be Z-shaped, L-shaped, or other irregular shapes, and the embodiment is not limited herein.

In order to enable the amount of lubricating oil to be easily adjusted, an oil supply pipe is arranged on the housing 110, one end, facing the housing 110, of the oil supply pipe is communicated with the oil inlet channel 1114, one end, facing away from the housing 110, of the oil supply pipe is connected with an engine oil pump, lubricating oil is introduced into the accommodating cavity 1112 of the housing 110 through the oil supply pipe by the engine oil pump, and therefore the lubricating oil is conveniently supplied to the oil inlet channel 1114.

With continued reference to fig. 2, in the water pump 100 according to the present embodiment, the driving gear 130 and the impeller 140 are further included, the driving gear 130 and the impeller 140 are both located outside the accommodating cavity 1112, the driving gear 130 and the impeller 140 are respectively connected to two opposite ends of the rotating shaft 121, and the driving gear 130 may be engaged with an external transmission gear train to drive the rotating shaft 121 and the impeller 140 to rotate.

The driving gear 130 is located outside the accommodating cavity 1112, the driving gear 130 is connected to an end portion of the rotating shaft 121 facing the end cover, a mounting hole is formed in the driving gear 130, the driving gear 130 is sleeved on the end portion of the rotating shaft 121, the driving gear 130 is connected to the rotating shaft 121 in a non-detachable manner, for example, the driving gear 130 and the rotating shaft 121 may be connected in an interference fit manner, the driving gear 130 and the rotating shaft 121 may also be connected in a riveting manner, and the connection manner of the driving gear 130 and the rotating shaft 121 is not limited in this embodiment.

The driving gear 130 is engaged with an external transmission gear train to drive the rotation shaft 121 and the impeller 140 to rotate, and the transmission gear train may be two or more external gears, and the transmission gear train may also be two internal gears, which is not limited in this embodiment.

The driving gear 130 abuts against the inner ring of the second bearing 122, and is used for positioning the second bearing 122, the retainer ring 123, the first bearing 124 and the oil seal 150 in the accommodating cavity 1112 along the axial direction of the rotating shaft 121, so as to avoid axial movement of the second bearing 122, the retainer ring 123, the first bearing 124 and the oil seal 150 along the axial direction of the rotating shaft 121. The driving gear 130 is provided with a boss, the boss on the driving gear 130 is accommodated in the rotating channel on the end cover 112, a gap is formed between the outer side wall of the boss and the rotating channel on the end cover 112, and the lubricating oil in the accommodating cavity 1112 can be discharged out of the water pump 100 from the gap between the outer side wall of the boss and the rotating channel on the end cover 112.

The water pump 100 further includes an impeller 140, the impeller 140 is located outside the accommodating cavity 1112, the impeller 140 is connected to an end of the rotating shaft 121, and after the water pump 100 is started, the water pump 100 drives the bearing on the rotating shaft 121 and the impeller 140 to rotate through the rotating shaft 121.

In this embodiment, the water pump includes a housing and a rotating assembly, the housing is provided with an accommodating cavity, and the rotating assembly is rotatably arranged in the accommodating cavity; the rotating assembly comprises a rotating shaft and a bearing sleeved on the rotating shaft, and the rotating shaft is used for providing a rotating driving force; and the shell is provided with an oil inlet channel which is communicated with the accommodating cavity and is used for introducing lubricating oil into the accommodating cavity so as to lubricate the bearing. Compared with the traditional splash lubrication, the lubricating oil can be stably supplied, and meanwhile, the oil supply amount is easy to adjust, so that the reliable lubrication of the bearing is realized, the high-temperature failure caused by insufficient lubrication of the bearing is avoided, and the operation safety of the water pump is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A water pump is characterized by comprising a shell and a rotating assembly, wherein the shell is provided with an accommodating cavity, and the rotating assembly is rotatably arranged in the accommodating cavity; the rotating assembly comprises a rotating shaft and a bearing sleeved on the rotating shaft, and the rotating shaft is used for providing a rotating driving force;

and an oil inlet channel is arranged on the shell, is communicated with the accommodating cavity and is used for introducing lubricating oil into the accommodating cavity so as to lubricate the bearing.

2. The water pump of claim 1, wherein the housing includes a shell and an end cap, the shell and the end cap together defining the receiving cavity; the water pump also comprises an oil seal;

the oil seal, the end cover, the rotating shaft and the inner wall of the containing cavity jointly enclose an oil path space, and the bearing is located in the oil path space.

3. The water pump of claim 2, wherein the number of the bearings is plural, and the rotating assembly further comprises a retainer ring disposed between two adjacent bearings, and the retainer ring is provided with a through hole communicated with the oil inlet passage.

4. The water pump according to claim 3, wherein the plurality of through holes are distributed along the circumferential direction of the retainer ring, and the through holes are communicated with the inner side and the outer side of the retainer ring.

5. The water pump of claim 3, wherein the bearing comprises a first bearing and a second bearing, the first bearing, the retainer ring and the second bearing are sequentially arranged from inside to outside along the axial direction of the rotating shaft, and the oil inlet channel is located on one side, close to the first bearing, of the retainer ring.

6. The water pump as claimed in claim 5, wherein the retainer ring has a stopper portion protruding inward in a radial direction of the rotary shaft, the stopper portion being located on a side of the retainer ring facing the second bearing.

7. The water pump according to any one of claims 2 to 6, wherein a first groove and a second groove are formed on the inner wall of the accommodating cavity, and both the first groove and the second groove are communicated with the outside of the accommodating cavity;

the first groove extends along the axial direction of the rotating shaft, and the first groove is communicated with the oil inlet channel;

the second recess with first recess sets up along the not equidirectional setting of circumference of rotation axis, just the second recess extends to the installation terminal surface in holding chamber, wherein, the installation terminal surface with the terminal surface butt of oil blanket.

8. A water pump according to claim 5, wherein a clearance is provided between the end face of the first bearing and the oil seal.

9. The water pump according to any one of claims 1 to 6, further comprising an oil supply pipe connected to the oil inlet passage for supplying lubricating oil to the oil inlet passage.

10. The water pump according to any one of claims 1 to 6, further comprising a driving gear and an impeller, wherein the driving gear and the impeller are both located outside the accommodating cavity, and are respectively connected with two opposite ends of the rotating shaft, and the driving gear can be meshed with an external transmission gear train to drive the rotating shaft and the impeller to rotate.

Images