CN215762852U

CN215762852U - Water pump shaft coupling bearing seal assembly

Info

Publication number: CN215762852U
Application number: CN202122027454.6U
Authority: CN
Inventors: 孙晓军
Original assignee: Dolz Auto Parts Suzhou Co Ltd
Current assignee: Dolz Auto Parts Suzhou Co Ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-02-08
Anticipated expiration: 2031-08-26

Abstract

The utility model discloses a water pump shaft connecting bearing sealing assembly which comprises a shaft, an outer ring sleeved outside the shaft, a retainer arranged between the outer ring and the shaft, and a rolling ball embedded in the retainer, wherein the outer ring is sleeved outside the shaft; the one end of axle is equipped with the chamfer installation department that is used for installing the gear, the other end of axle is equipped with the connecting portion that are used for installing the impeller, the outer lane is close to and is equipped with the snap ring formula sealing washer on the internal diameter of chamfer installation department, the outer lane is close to and is equipped with the dust seal circle on the internal diameter of connecting portion, the distolateral sealed lantern ring that leans on the gear that is equipped with of outer lane, sealed lantern ring including locate the distolateral ring body of outer lane and cladding in the external sealed rubber ring in the ring body outside, be equipped with the connecting key of grafting cooperation outer lane on the ring body, the surface laminating of external sealed rubber ring and gear is supported and is leaned on. The utility model realizes the effective sealing of the water pump shaft connecting bearing and prolongs the service life.

Description

Water pump shaft coupling bearing seal assembly

Technical Field

The utility model belongs to the technical field of water pump manufacturing, and particularly relates to a water pump shaft connecting bearing sealing assembly.

Background

One end of a water pump shaft connecting bearing is connected with an impeller, the other end of the water pump shaft connecting bearing is connected with a gear, the gear is a driving wheel, a conventional gear is assembled on the shaft connecting bearing through interference fit, the prior patent No. CN201310504802.1 discloses the water pump shaft connecting bearing with a sealing structure, and the water pump shaft connecting bearing comprises an outer ring, a shaft, a rolling body, a retainer, a double-lip sealing ring, a sealing structure and the like, wherein two outer raceways are arranged on the inner diameter of the outer ring, two inner raceways corresponding to the outer raceways are arranged on the outer diameter of the shaft, the retainer is arranged between the outer ring and the shaft, and the rolling body is arranged in the raceway between the outer ring and the shaft through the retainer; a dustproof sealing groove is formed in the inner diameter of the outer ring close to the flange end and is positioned on the outer side of the outer raceway; the outer diameter of the double-lip sealing ring is embedded in the dustproof sealing groove, and the double lips on the inner diameter are in interference fit with the shaft; the sealing structure is arranged at the impeller end of the water pump shaft connecting bearing and is positioned at the outer side of the outer raceway, and the sealing structure is a clamping ring type sealing ring or a composite sealing structure with a water throwing ring.

When the existing water pump shaft coupling bearing structure is subjected to the action force of axial impact load, a gear can generate a certain amount of axial movement, and the stability of the gear is influenced; the outer ring and the shaft are sealed through the snap ring type sealing ring, and because the gear is located outside the water pump shell, dust and impurities are more easily introduced into the side of the gear end, and the snap ring type sealing ring cannot meet long-time sealing operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provides a water pump shaft connecting bearing sealing assembly, so that the water pump shaft connecting bearing is effectively sealed, and the service life is prolonged. In order to achieve the purpose, the technical scheme of the utility model is as follows:

the water pump shaft is connected with a bearing sealing assembly, which comprises a shaft, an outer ring sleeved outside the shaft, a retainer arranged between the outer ring and the shaft, and a rolling ball embedded in the retainer; the one end of axle is equipped with the chamfer installation department that is used for installing the gear, the other end of axle is equipped with the connecting portion that are used for installing the impeller, the outer lane is close to and is equipped with the snap ring formula sealing washer on the internal diameter of chamfer installation department, the outer lane is close to and is equipped with the dust seal circle on the internal diameter of connecting portion, the distolateral sealed lantern ring that leans on the gear that is equipped with of outer lane, sealed lantern ring including locate the distolateral ring body of outer lane and cladding in the external sealed rubber ring in the ring body outside, be equipped with the connecting key of grafting cooperation outer lane on the ring body, the surface laminating of external sealed rubber ring and gear is supported and is leaned on.

Specifically, a group of outer raceways is arranged on the inner diameter of the outer ring, an inner raceway corresponding to the group of outer raceways is arranged on the outer diameter of the shaft, and the rolling ball is arranged between the outer raceway and the inner raceway.

Specifically, the contact point where the rolling ball contacts the outer raceway and the eccentric angle of the inner raceway is the largest is an edge contact point, and an included angle formed between the edge contact points of a group of rolling balls is 50 degrees.

Specifically, the chamfer installation part is provided with an inclined conical surface, and an inner hole of the gear is in corresponding sleeved fit with the conical surface.

Specifically, the snap ring type sealing ring comprises a first framework, a first sealing rubber ring wrapped outside the first framework, and a spring tightly holding the first sealing rubber ring.

Specifically, the cross-section of first skeleton is L type structure, first seal rubber ring includes outer lip and interior lip, outer lip and interior lip all with axle interference fit, the spring housing is located on the external diameter of outer lip.

Specifically, be equipped with the seal groove of spacing dust seal circle on the outer lane internal diameter, dust seal circle includes second skeleton, cladding in the outside second rubber seal of second skeleton.

The second framework comprises an L framework and a Z framework connected with the L framework, the second sealing rubber ring comprises a sealing part coated on the L framework, an outer lip and an inner lip coated on the Z framework, the sealing part is embedded in the sealing groove in a corresponding matching mode, and the outer lip and the inner lip are in interference fit with the shaft.

Compared with the prior art, the water pump shaft connecting bearing sealing assembly has the beneficial effects that:

the gear is connected with the shaft through a conical surface and is in wedge-shaped fit, so that the gear has a more stable and reliable connecting structure, and axial movement displacement is avoided; set up snap ring formula sealing washer and dust seal circle between axle and the outer lane, realize the one-level sealed effect of outer lane, support through the sealed lantern ring and lean on the gear for form the sealed effect of second grade between outer lane and the snap ring formula sealing washer, to the external operational environment that the gear is located, strengthen sealing performance, prevent impurity direct contact snap ring formula sealing washer, improved the guard action, prolonged seal structure's life simultaneously.

Drawings

FIG. 1 is a schematic sectional view of the embodiment of the present invention;

FIG. 2 is a partial sectional view of the present embodiment;

the figures in the drawings represent:

the structure comprises a shaft 1, an outer ring 11, an outer raceway 12, an inner raceway 13, a retainer 14, a rolling ball 15, an edge contact point 16, a gear 2, a chamfer mounting part 21, a connecting part 22, a conical surface 23, a bolt 24, a nut 25, a snap ring type sealing ring 3, a first framework 31, a first sealing rubber ring 32, a spring 33, a dustproof sealing ring 4, a sealing groove 41, a second framework 42, a second sealing rubber ring 43, a framework 44L, a framework 45Z, a sealing part 46, a sealing lantern ring 5, a ring body 51, a connecting key 52 and an external sealing rubber ring 53.

Detailed Description

The technical solutions in the embodiments of the present invention are described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

Example (b):

referring to fig. 1-2, the present embodiment is a water pump shaft coupling bearing seal assembly, which includes a shaft 1, an outer ring 11 sleeved outside the shaft 1, a set of outer raceways 12 provided on an inner diameter of the outer ring 11, inner raceways 13 provided on an outer diameter of the shaft 1 and corresponding to the set of outer raceways 12, a retainer 14 installed between the outer ring 11 and the shaft 1, and balls 15 embedded in the retainer 14 and disposed between the outer raceways 12 and the inner raceways 13. The contact point that the eccentric angle is the biggest in the spin 15 contact outer raceway 12 is marginal contact point 16, and the contained angle that forms between the marginal contact point 16 of a set of spin 15 is 50, optimizes bearing inner structure, improves bearing capacity and life, even when the bigger load that probably appears under the anti-shock variable operating mode of water pump, guarantees that the water pump operates steadily and does not become invalid. The number of the rolling balls 15 in one group is ten, the number of the rolling balls 15 in each row is five, the diameter of each rolling ball 15 is 12.27mm, and the distance between the rolling balls 15 in one group is 18.5mm

One end of the shaft 1 is provided with a chamfered mounting portion 21 for mounting the gear 2, and the other end of the shaft 1 is provided with a connecting portion 22 for mounting an impeller. The chamfer installation part 21 is provided with an inclined conical surface 23, the inner hole of the gear 2 is correspondingly sleeved and matched with the conical surface 23, the end part of the shaft 1 is provided with a bolt 24 which is coaxially connected, and the bolt 24 is sleeved with a nut 25 which is used for tightly abutting against the gear 2. The included angle between the conical surface 23 and the horizontal plane is 8-8.5 degrees.

And a snap ring type sealing ring 3 is arranged on the inner diameter of the outer ring 11 close to the chamfer installation part 21, and the snap ring type sealing ring 3 is positioned on the outer side of the outer raceway 12. The snap ring type sealing ring 3 comprises a first framework 31, a first sealing rubber ring 32 coated outside the first framework 31, and a spring 33 tightly holding the first sealing rubber ring 32; the cross-section of first skeleton 31 is L type structure, and first seal rubber ring 32 includes outer lip and interior lip, outer lip and interior lip all with 1 interference fit of axle, on the external diameter of outer lip was located to spring 33 cover for outer lip and axle 1 in close contact with.

The inner diameter of the outer ring 11 close to the connecting part 22 is provided with a dustproof sealing ring 4, and the dustproof sealing ring 4 is positioned at the outer side of the outer raceway 12. Be equipped with the seal groove 41 of spacing dust seal 4 on the inner diameter of outer lane 11, dust seal 4 includes second skeleton 42, cladding in the outside second sealing rubber ring 43 of second skeleton 42, and second skeleton 42 includes L skeleton 44, connects the Z skeleton 45 of L skeleton 44, and second sealing rubber ring 43 includes cladding sealing 46 on L skeleton 44, cladding outer lip and the inner lip on Z skeleton 45. The sealing part 46 is correspondingly matched and embedded with the sealing groove 41, and the outer lip and the inner lip are in interference fit with the shaft 1. The second framework 42 is matched with the structure of the sealing groove 41, so that the supporting and sealing effects are better, and the connection strength is higher.

The end side of the outer ring 11 is provided with a sealing lantern ring 5 abutting against the gear 2, and the sealing lantern ring 5 comprises a ring body 51 arranged on the end side of the outer ring and an external sealing rubber ring 53 coated on the outer side of the ring body 51; the ring body 51 is provided with a connecting key 52 which is in plug-in fit with the outer ring 11, and the external sealing rubber ring 53 is attached to and abutted against the surface of the gear 2.

When the embodiment is applied, the gear 2 is connected with the shaft 1 through the conical surface 23, and wedge-shaped matching is performed, so that the gear 2 has a more stable and reliable connecting structure, and axial movement displacement is avoided; set up snap ring formula sealing washer 3 and dust seal 4 between axle 1 and the outer lane 11, realize the one-level sealing effect of outer lane 11, support through sealed lantern ring 5 and lean on gear 2 for form the sealed effect of second grade between outer lane 11 and the snap ring formula sealing washer 3, to the outside operational environment that gear 2 locates, strengthen sealing performance, prevent impurity direct contact snap ring formula sealing washer 3, improved the guard action, prolonged seal structure's life simultaneously.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the utility model.

Claims

1. Water pump shaft is bearing seal assembly, its characterized in that: comprises a shaft, an outer ring sleeved outside the shaft, a retainer arranged between the outer ring and the shaft, and a rolling ball embedded in the retainer; the one end of axle is equipped with the chamfer installation department that is used for installing the gear, the other end of axle is equipped with the connecting portion that are used for installing the impeller, the outer lane is close to and is equipped with the snap ring formula sealing washer on the internal diameter of chamfer installation department, the outer lane is close to and is equipped with the dust seal circle on the internal diameter of connecting portion, the distolateral sealed lantern ring that leans on the gear that is equipped with of outer lane, sealed lantern ring including locate the distolateral ring body of outer lane and cladding in the external sealed rubber ring in the ring body outside, be equipped with the connecting key of grafting cooperation outer lane on the ring body, the surface laminating of external sealed rubber ring and gear is supported and is leaned on.

2. The water pump shaft coupling bearing seal assembly of claim 1, wherein: the inner diameter of the outer ring is provided with a group of outer raceways, the outer diameter of the shaft is provided with an inner raceway corresponding to the group of outer raceways, and the rolling ball is arranged between the outer raceway and the inner raceway.

3. The water pump shaft coupling bearing seal assembly of claim 2, wherein: the contact point with the largest eccentric angle when the rolling ball contacts the outer raceway is an edge contact point, and an included angle formed between the edge contact points of one group of rolling balls is 50 degrees.

4. The water pump shaft coupling bearing seal assembly of claim 1, wherein: the bevel installation part is provided with an inclined conical surface, and an inner hole of the gear is in corresponding sleeved fit with the conical surface.

5. The water pump shaft coupling bearing seal assembly of claim 1, wherein: the clamp ring type sealing ring comprises a first framework, a first sealing rubber ring wrapped outside the first framework and a spring tightly holding the first sealing rubber ring.

6. The water pump shaft coupling bearing seal assembly of claim 5, wherein: the cross-section of first skeleton is L type structure, first sealed rubber ring includes outer lip and interior lip, outer lip and interior lip all with axle interference fit, the spring housing is located on the external diameter of outer lip.

7. The water pump shaft coupling bearing seal assembly of claim 1, wherein: and the inner diameter of the outer ring is provided with a sealing groove for limiting a dustproof sealing ring, and the dustproof sealing ring comprises a second framework and a second sealing rubber ring coated outside the second framework.

8. The water pump shaft coupling bearing seal assembly of claim 7, wherein: the second skeleton includes the L skeleton, connects the Z skeleton of L skeleton, the sealed rubber ring of second includes cladding sealing on the L skeleton, cladding outer lip and the inner lip on the Z skeleton, the corresponding cooperation embedding of sealing portion and seal groove, outer lip and inner lip all with axle interference fit.