CN214742316U - Engine water pump - Google Patents
Engine water pump Download PDFInfo
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- CN214742316U CN214742316U CN202120790731.6U CN202120790731U CN214742316U CN 214742316 U CN214742316 U CN 214742316U CN 202120790731 U CN202120790731 U CN 202120790731U CN 214742316 U CN214742316 U CN 214742316U
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Abstract
The utility model discloses an engine water pump, a water inlet is arranged on a shell, an impeller is arranged in the shell, a first pump shaft and a second pump shaft which are coaxially arranged are rotatably arranged in the shell, and the first pump shaft and the second pump shaft are connected through a multidirectional connecting piece which can rotate in multiple directions; a first shaft coupling bearing and a second shaft coupling bearing are arranged in the shell; one end of the first pump shaft is fixedly connected with an impeller, a water seal and a first oil seal are arranged on the first pump shaft, the water seal is close to the impeller and is positioned on one side of the impeller, which is far away from the water inlet, the first oil seal is close to the first shaft coupling bearing and is positioned on one side of the first shaft coupling bearing, which is close to the water inlet, and a second oil seal is arranged on one end of the second pump shaft, which is close to the multidirectional connecting piece; a first water drainage hole is formed in the shell between the water seal and the first oil seal, and a second water drainage hole is formed in the shell between one end, close to the multidirectional connecting piece, of the first shaft coupling bearing and the second oil seal. The engine water pump can avoid water leakage into the oil sump, and avoid engine oil emulsification and engine carburetor faults.
Description
Technical Field
The utility model relates to a water pump machine technical field, concretely relates to water pump for engine.
Background
The traditional water pump for the engine is divided into a belt drive type water pump and a gear drive type water pump, the gear drive type water pump is simple in structure, convenient to install, low in total cost, and high in use frequency. But gear drive formula water pump water cavity, oil pocket communicate with each other with engine oil bottom shell chamber, and the impact force in the gear transmission process can cause the water pump bearing to damage occasionally, and the water pump axle produces great rocking this moment and makes water pump water seal, oil blanket damage, and water in the water cavity can get into oil bottom shell along the oil pocket, causes troubles such as engine oil emulsification, engine machine tile.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect of prior art, the utility model aims to solve the technical problem that an engine water pump is provided, can avoid water to leak into the oil pan, and then avoid machine oil emulsification and engine mechanism tile trouble.
In order to solve the technical problem, the utility model discloses a following technical scheme:
an engine water pump comprising: a shell, a water inlet is arranged on the shell, an impeller is arranged in the shell, the impeller is characterized in that,
a first pump shaft and a second pump shaft which are coaxially arranged are rotatably arranged in the shell, and the first pump shaft and the second pump shaft are connected through a multidirectional connecting piece which can rotate in multiple directions;
a first shaft coupling bearing for supporting the first pump shaft and a second shaft coupling bearing for supporting the second pump shaft are arranged in the shell;
the impeller is fixedly connected to one end of the first pump shaft, a water seal and a first oil seal are arranged on the first pump shaft, the water seal is close to the impeller and located on one side, away from the water inlet, of the impeller, the first oil seal is close to the first shaft coupling bearing and located on one side, close to the water inlet, of the first pump shaft, and a second oil seal is arranged on one end, close to the multidirectional connecting piece, of the second pump shaft;
and a first water drainage hole is formed in the shell between the water seal and the first oil seal, and a second water drainage hole is formed in the shell between one end, close to the multidirectional connecting piece, of the first shaft coupling bearing and the second oil seal.
Preferably, the multi-way connector is a spherical spline structure, and one end of the first pump shaft is connected with one end of the second pump shaft through the spherical spline structure.
Preferably, the spherical spline structure comprises a key body arranged at one end of the first pump shaft, the key body is provided with a plurality of key teeth uniformly distributed along the circumferential direction, the tooth crest of each key tooth is an arc surface, and one end connected with the second pump shaft is provided with a key groove matched with the key body.
Preferably, one end of the first pump shaft is connected with one end of the second pump shaft through a coupling.
Preferably, the first drainage hole and the second drainage hole are both opened at the installation bottom of the housing.
Preferably, the first shaft coupling bearing and the second shaft coupling bearing both adopt a ball-column structure, and the first shaft coupling bearing and the second shaft coupling bearing are both provided with bearing oil seals.
Preferably, the casing is divided including the first branch casing and the second that set up, it has to hold in the first branch casing the impeller with the water seal, the second divides the casing to hold the first pump shaft, first oil blanket, first shaft coupling bearing, the second pump shaft, the second oil blanket with the second shaft coupling bearing, first outlet with the second outlet is seted up on the second divides the casing.
Preferably, the casing divides casing and third branch casing including the first branch casing that sets gradually, hold in the first branch casing the impeller with the water seal, hold in the second branch casing the first pump shaft the first oil blanket with first shaft coupling bearing, the third branch casing holds the second pump shaft the second oil blanket with second shaft coupling bearing, first outlet with the second outlet is seted up in the second branch casing.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
the pump shaft of the engine water pump is formed by connecting a first pump shaft and a second pump shaft through a multidirectional connecting piece, if impact force between gears damages a first coupling bearing on the first pump shaft during operation, the impact force between the gears has less influence on a second coupling bearing on the second pump shaft due to the compensation effect of the multidirectional connecting piece, so that the sealing of a second sealing ring is not failed, water flowing out through a water seal can flow out from a first water drainage hole and/or a second water drainage hole, and the water can not continuously flow to an oil pan;
if when the impact force causes the damage to the epaxial second shaft coupling bearing of second pump between the gear, because multidirectional connecting piece can compensate the angular deflection, consequently, first pump shaft can not produce great skew to can not cause the damage to first shaft coupling bearing, and then first sealing washer can not lead to sealed the inefficacy because of the position removes, and the water that passes the water seal outflow can discharge at first outlet, and the water of leaking can not continue to flow right and get into in the oil pan.
To sum up, the utility model discloses an engine water pump can avoid water to leak into the oil pan, and then avoids causing troubles such as machine oil emulsification, engine machine tile.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of an engine water pump according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at B in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken at A-A in FIG. 1;
FIG. 4 is a schematic structural diagram of a second embodiment of the engine water pump of the present invention;
in the figure: 1. a housing; 101. a first sub-housing; 102. a second sub-housing; 103. a third sub-shell; 2. an impeller; 3. a first pump shaft; 301. a key tooth; 4. a second pump shaft; 401. a keyway; 5. a multidirectional connector; 6. a first shaft coupling bearing; 601. a first bearing oil seal; 602. a second bearing oil seal; 7. a second shaft coupling bearing; 8. bearing oil seal; 9. a second oil seal; 10. water sealing; 11. a first oil seal; 12. a water inlet; 13. a first drain hole; 14. a second weep hole.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided in conjunction with the accompanying drawings and specific embodiments for further understanding the objects, aspects and functions of the present invention, but not for limiting the scope of the appended claims.
Example one
As shown in fig. 1 to 3, in the engine water pump, an impeller 2 is arranged in a housing 1, a water inlet 12 is located at the left end of the housing 1, when in use, the right end of the housing 1 is mounted on an oil pan (the oil pan is not shown in the figure), a first pump shaft 3 and a second pump shaft 4 which are coaxially arranged are rotatably mounted in the housing 1, and the first pump shaft 3 and the second pump shaft 4 are connected through a multi-directional connecting piece 5 which can rotate in multiple directions;
a first shaft coupling bearing 6 for supporting the first pump shaft 3 and a second shaft coupling bearing 7 for supporting the second pump shaft 4 are arranged in the shell 1, and bearing oil seals 8 are arranged on the first shaft coupling bearing 6 and the second shaft coupling bearing 7;
one end of the first pump shaft 3 is fixedly connected with an impeller 2, a water seal 10 and a first oil seal 11 are arranged on the first pump shaft 3, the water seal 10 is close to the impeller 2 and is positioned on one side, far away from a water inlet 12, of the impeller 2, the first oil seal 11 is close to the first shaft coupling bearing and is positioned on one side, close to the water inlet 12, and a second oil seal 9 is arranged on one end, close to the multidirectional connecting piece 5, of the second pump shaft 4;
a first water drainage hole 13 is formed in the shell 1 between the water seal 10 and the first oil seal 11, and a second water drainage hole 14 is formed in the shell 1 between one end of the first shaft coupling bearing 6, which is close to the multidirectional connecting piece 5, and the second oil seal 9.
As shown in fig. 2, the multi-directional coupler 5 is configured as a spherical spline structure, and one end of the first pump shaft 3 is connected to one end of the second pump shaft 4 through the spherical spline structure. The spherical spline structure comprises a key body arranged at one end of the first pump shaft 3, the key body is provided with a plurality of key teeth 301 uniformly distributed along the circumferential direction, the tooth crest of each key tooth 301 is an arc surface, and one end connected with the second pump shaft 4 is provided with a key groove 401 matched with the key body. The key teeth 301 adopt cambered outer contours, so that large angular displacement can be compensated.
The above-mentioned multi-directional connecting piece can also adopt a coupling structure, that is, one end of the first pump shaft 3 and one end of the second pump shaft 4 are connected through a coupling. Of course, other configurations are possible, as long as the angular offset of the first and/or second pump shaft, which is caused when the first or second shaft coupling bearing is damaged, can be compensated for.
The first drainage hole 13 and the second drainage hole 14 are both opened at the installation bottom of the housing 1, and the first drainage hole 13 and the second drainage hole 14 may be disposed downward perpendicular to the axial direction or may be disposed obliquely downward.
The first shaft coupling bearing 6 and the second shaft coupling bearing 7 both adopt a ball-column structure, and the first shaft coupling bearing 6 and the second shaft coupling bearing 7 are both provided with bearing oil seals. As shown in fig. 1, a ball rolling element on the left side and a cylindrical rolling element on the right side are provided in the bearing outer race of the first shaft coupling bearing 6, a first bearing oil seal 601 is provided on the left side of the ball rolling element, and a second bearing oil seal 602 is provided on the right side of the cylindrical rolling element. The structure of the second coupling bearing 7 is the same as that of the first coupling bearing 6, and only the installation manner is different, which is not described herein.
As shown in fig. 1, the casing 1 is composed of two parts, the casing 1 includes a first sub-casing 101 and a second sub-casing 102, the first sub-casing 101 accommodates the impeller 2 and the water seal 10 therein, the second sub-casing 102 accommodates the first pump shaft 3, the first oil seal, the first shaft coupling bearing 6, the second pump shaft 4, the second oil seal 9, and the second shaft coupling bearing 7 therein, and the first drain hole 13 and the second drain hole 14 are opened in the second sub-casing 102.
Example two
The present embodiment differs from the first embodiment only in that the housing of the engine water pump is composed of three parts, i.e., the housing includes a first sub-housing 101, a second sub-housing 102, and a third sub-housing 103.
As shown in fig. 4, in the engine water pump, the impeller 2 and the water seal 10 are accommodated in the first sub-housing 101, the first pump shaft 3, the first oil seal 11 and the first coupling bearing 6 are accommodated in the second sub-housing 102, the second pump shaft 4, the second oil seal 9 and the second coupling bearing 7 are accommodated in the third sub-housing, the first water drain hole 13 is opened in the second sub-housing 102, and the second water drain hole 14 is opened in the third sub-housing 103.
The second sub-housing and the third sub-housing are connected through bolts, so that the first pump shaft 3 and the second pump shaft 4 can be conveniently connected and mounted.
The utility model discloses engine water pump prevent that water in the water cavity from getting into the theory of operation of oil pan:
if the first oil seal 11 does not fail when the water seal 10 leaks water due to a fault, the water will be discharged along the first water discharge hole 13 between the water seal 10 and the first oil seal 11, and the leaked water will not flow to the right into the oil pan.
Moreover, when the engine water pump is in operation, if meet special operating mode, the gear of hypothesis water pump receives great impact to cause the damage of shaft coupling bearing:
1) if first shaft coupling bearing 6 damages, lead to first pump shaft 3 to produce and rock or skew (angular deflection), because multidirectional connecting piece 5 can compensate angular deflection, consequently, second pump shaft 4 can not produce great skew, thereby can not lead to the fact the damage to second shaft coupling bearing 7, and then second oil blanket 9 can not lead to sealed the inefficacy because of the position removes, even first oil blanket 11 inefficacy leads to partial rivers to pass first oil blanket 11 and flow to the casing department of the first shaft coupling bearing of installation, then rivers can be followed second outlet opening 14 and discharged, the sealed effect of second oil blanket 9 in addition, rivers can not flow into the oil pan.
2) If when second shaft coupling bearing 7 damages, lead to second pump shaft 4 to produce and rock or skew (angular deflection), because multidirectional connecting piece 5 can compensate angular deflection, consequently, first pump shaft 3 can not produce great skew to can not lead to the fact the damage to first shaft coupling bearing 6, and then first oil blanket 11 can not lead to sealed the inefficacy because of the position removes, and first outlet 13 between the first oil blanket 11 discharges, and the water of leaking can not continue to flow right and get into in the oil pan.
To sum up, the utility model discloses a pump shaft sets up to two parts, the pump shaft is connected through multidirectional connecting piece by first pump shaft and second pump shaft promptly, the impact force is mainly influential to an epaxial shaft coupling bearing in first pump shaft and the second pump shaft during the operation, because the compensatory action of multidirectional connecting piece, the impact force influences lessly to another epaxial shaft coupling bearing between the gear, correspondingly, it is less to the influence with the adjacent sealing washer of another epaxial shaft coupling bearing, do not influence the sealing action of this sealing washer, the water of leakage can be followed first outlet opening and/or the discharge of first second outlet opening department, can not flow to the oil pan, and then avoid causing the engine oil emulsification, faults such as engine pan.
The present invention is not limited to the above embodiments, and all improvements made based on the concept, principle, structure and method of the present invention are all within the protection scope of the present invention.
Claims (8)
1. An engine water pump comprising: a shell, a water inlet is arranged on the shell, an impeller is arranged in the shell, the impeller is characterized in that,
a first pump shaft and a second pump shaft which are coaxially arranged are rotatably arranged in the shell, and the first pump shaft and the second pump shaft are connected through a multidirectional connecting piece which can rotate in multiple directions;
a first shaft coupling bearing for supporting the first pump shaft and a second shaft coupling bearing for supporting the second pump shaft are arranged in the shell;
the impeller is fixedly connected to one end of the first pump shaft, a water seal and a first oil seal are arranged on the first pump shaft, the water seal is close to the impeller and located on one side, away from the water inlet, of the impeller, the first oil seal is close to the first shaft coupling bearing and located on one side, close to the water inlet, of the first pump shaft, and a second oil seal is arranged on one end, close to the multidirectional connecting piece, of the second pump shaft;
and a first water drainage hole is formed in the shell between the water seal and the first oil seal, and a second water drainage hole is formed in the shell between one end, close to the multidirectional connecting piece, of the first shaft coupling bearing and the second oil seal.
2. The engine water pump of claim 1, wherein the multidirectional connector is configured as a ball spline structure, and one end of the first pump shaft is connected with one end of the second pump shaft through the ball spline structure.
3. The engine water pump of claim 2, wherein the spherical spline structure comprises a key body arranged at one end of the first pump shaft, the key body is provided with a plurality of key teeth which are uniformly distributed along the circumferential direction, the top surfaces of the key teeth are cambered surfaces, and one end connected with the second pump shaft is provided with a key groove matched with the key body.
4. The engine water pump of claim 1, wherein one end of the first pump shaft and one end of the second pump shaft are coupled by a coupling.
5. The engine water pump as claimed in claim 1, wherein the first bleed opening and the second bleed opening are both open at a mounting bottom of the housing.
6. The engine water pump of claim 1, wherein the first and second shaft coupling bearings each have a ball-and-post configuration, and wherein the first and second shaft coupling bearings are provided with bearing oil seals.
7. The engine water pump according to any one of claims 1 to 6, wherein the housing includes a first sub-housing and a second sub-housing, the first sub-housing accommodates the impeller and the water seal therein, the second sub-housing accommodates the first pump shaft, the first oil seal, the first coupling bearing, the second pump shaft, the second oil seal, and the second coupling bearing therein, and the first drain hole and the second drain hole are opened in the second sub-housing.
8. The engine water pump according to any one of claims 1 to 6, wherein the housing includes a first sub-housing, a second sub-housing, and a third sub-housing, which are sequentially disposed, the impeller and the water seal are accommodated in the first sub-housing, the first pump shaft, the first oil seal, and the first coupling bearing are accommodated in the second sub-housing, the second pump shaft, the second oil seal, and the second coupling bearing are accommodated in the third sub-housing, and the first drain hole and the second drain hole are opened in the second sub-housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120790731.6U CN214742316U (en) | 2021-04-16 | 2021-04-16 | Engine water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120790731.6U CN214742316U (en) | 2021-04-16 | 2021-04-16 | Engine water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214742316U true CN214742316U (en) | 2021-11-16 |
Family
ID=78603919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120790731.6U Active CN214742316U (en) | 2021-04-16 | 2021-04-16 | Engine water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214742316U (en) |
-
2021
- 2021-04-16 CN CN202120790731.6U patent/CN214742316U/en active Active
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