CN204312977U - Become the oil charging structure of displacement oil pump - Google Patents
Become the oil charging structure of displacement oil pump Download PDFInfo
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- CN204312977U CN204312977U CN201420743496.7U CN201420743496U CN204312977U CN 204312977 U CN204312977 U CN 204312977U CN 201420743496 U CN201420743496 U CN 201420743496U CN 204312977 U CN204312977 U CN 204312977U
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- filter screen
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Abstract
The utility model discloses a kind of oil charging structure becoming displacement oil pump, comprise the housing (1) of oil pump, oil-feed cylindrical shell (3), filter screen (5), gland (4) and the joint (2) for connecting housing (1) and oil-feed cylindrical shell (3), there is in joint (2) oil inlet hole (6) of active chamber in connection housing (1) and oil-feed cylindrical shell (3) inner chamber, filter screen (5) is pressed in oil-feed cylindrical shell (3) by gland (4), gland (4) and oil-feed cylindrical shell (3) close-fitting; The intracavity bottom of described oil-feed cylindrical shell (3) has annular boss (7) along inner peripheral wall, and the end face that the edge of filter screen (5) is close to annular boss (7) is compressed by gland (4).After adopting above structure, the fluid entering oil inlet hole can be supplemented timely, and then ensures the normal operation of oil pump.
Description
Technical field
The utility model relates to the technical field of oil pump, is specifically a kind of oil charging structure becoming displacement oil pump.
Background technique
Displacement-variable oil pump is the oil pump that a kind of change according to load changes engine displacement, and machine oil is delivered on each engine movement part by it in oil sump.Displacement-variable oil pump comprises housing, is provided with inner chamber in housing, is provided with stator in inner chamber, is provided with the rotor be connected with engine crankshaft in stator, stator and rotor eccentricity ring, and rotor is circumferentially being provided with multiple blade.In prior art, housing is provided with filler opening, and fluid is by the inner chamber of filler opening ingress engine oil pump; and usually filter screen can be set at filler opening place; be used for filtering the impurity in fluid, ensure the turbidity test of ingress engine oil pump inner fluid, thus improve pump performance.But, there is following shortcoming in the oil charging structure of change displacement oil pump of the prior art: the housing due to filler opening place is the cylindrical barrel of hollow, cylinder body bottom is by the inner space of oil inlet hole and oil pump, and filter screen is the oil inlet hole place being close to cylinder body bottom, therefore, fluid from exterior line by directly entering oil inlet hole after filter screen, filter screen is in filtration fluid while impurity, also reduce oil inlet quantity, make the fluid of ingress engine oil pump inner chamber can not get supplementing timely, thus affect the normal operation of oil pump.
Model utility content
Technical problem to be solved in the utility model is, provides a kind of fluid making to enter oil inlet hole to be supplemented timely, and then the oil charging structure of the change displacement oil pump of the normal operation of guarantee oil pump.
For solving the problems of the technologies described above, the oil charging structure of the change displacement oil pump that the utility model provides, comprise the housing of oil pump, oil-feed cylindrical shell, filter screen, gland and for connecting in housing and the joint joint of oil-feed cylindrical shell the oil inlet hole having and be communicated with active chamber in housing and oil-feed cylinder lumen, filter screen is pressed in oil-feed cylindrical shell by gland, gland and oil-feed cylindrical shell close-fitting; The intracavity bottom of described oil-feed cylindrical shell has annular boss along inner peripheral wall, and the end face that the edge of filter screen is close to annular boss is compressed by gland.
Described gland is the ring-type press strip toward evagination towards one end edge of filter screen, and the circumferential edges of filter screen is adjacent to the upper-end surface of annular boss and the lower end surface of ring-type press strip respectively.
The inner diameter of described ring-type press strip is identical with the inner diameter of annular boss.
The axial height of described annular boss is greater than the axial height of ring-type press strip.
The inside and outside port of described gland upper annular press strip all has the chamfering for leading, and the conical surface of this chamfering and the axis of gland are the angle of 17.5 °.
After adopting above structure, the utility model compared with prior art, has following advantage:
1) because the cylinder body bottom edge at filler opening adds annular boss, filter screen is placed in the boss face of annular boss, like this, filter screen has just separated the distance of an annular boss height from filler opening, is equivalent to filter screen to make somebody a mere figurehead, and makes to form a chamber between filter screen and filler opening, and this chamber can be used for store fluid, therefore, the fluid entering oil inlet hole can be supplemented timely, and then ensures the normal operation of oil pump;
2) on the interior edge face of gland, a loop press strip is provided with, utilize the end face of press strip to compress the edge of filter screen, also make to be separated by between gland and filter screen the distance of a ring-type press strip height simultaneously, make between filter screen and gland, to also form an accumulator, like this, the fluid entered from the opening of gland is also having certain oil reserve before filter screen, therefore, more ensure that fluid enters the oil inlet quantity of oil inlet hole, the normal fuel injection of oil pump can be ensured better;
3) height of annular boss is greater than the height of ring-type press strip, this is because in be spaced a filter screen, ensureing under the prerequisite of fluid amount abundance entering oil inlet hole, chamber below filter screen must be large, and the accumulator above filter screen can enter fluid from outside constantly, therefore, the chamber volume below filter screen is greater than the volume of the accumulator above filter screen, shows that the height of annular boss is greater than the height of ring-type press strip;
4) in addition, the outer edge place, end of ring-type press strip is provided with chamfering, is convenient to the inwall of gland press-in oil-feed oil-feed cylindrical shell on the one hand, will ensures that the end face of ring-type press strip compresses the area of filter screen on the other hand, make the installation of filter screen more firm.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model becomes the oil charging structure of displacement oil pump.
Fig. 2 is the detonation configuration schematic diagram that the utility model becomes the oil charging structure of displacement oil pump.
Fig. 3 is the sectional structure schematic diagram that the utility model becomes the oil charging structure of displacement oil pump.
Wherein, 1, housing; 2, joint; 3, oil-feed cylindrical shell; 4, gland; 5, filter screen; 6, oil inlet hole; 7, annular boss; 8, ring-type press strip; 9, chamfering.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
The structural representation of the oil charging structure of displacement oil pump is become from the utility model shown in Fig. 1 ~ Fig. 3, it comprises the housing 1 of oil pump, oil-feed cylindrical shell 3, filter screen 5, gland 4 and the joint 2 for connecting housing 1 and oil-feed cylindrical shell 3, there is in joint 2 oil inlet hole 6 being communicated with active chamber in housing 1 and oil-feed cylindrical shell 3 inner chamber, filter screen 5 is pressed in oil-feed cylindrical shell 3 by gland 4, gland 4 and oil-feed cylindrical shell 3 close-fitting.The intracavity bottom of described oil-feed cylindrical shell 3 has annular boss 7 along inner peripheral wall, and the end face that the edge of filter screen 5 is close to annular boss 7 is compressed by gland 4.
Described gland 4 is the ring-type press strip 8 toward evagination towards one end edge of filter screen 5, and the circumferential edges of filter screen 5 is adjacent to the upper-end surface of annular boss 7 and the lower end surface of ring-type press strip 8 respectively.
The inner diameter of described ring-type press strip 8 is identical with the inner diameter of annular boss 7.
The axial height of described annular boss 7 is greater than the axial height of ring-type press strip 8.
The inside and outside port of described gland 4 upper annular press strip 8 all has the chamfering 9 for leading, and the conical surface of this chamfering 9 and the axis of gland 4 are the angle of 17.5 °.
The utility model is not limited to above-described structure, and the angle of chamfering also can be other angles, and the inner diameter of ring-type press strip can be not identical with the inner diameter of annular boss yet; These changes all fall within protection domain of the present utility model above.
Claims (5)
1. one kind becomes the oil charging structure of displacement oil pump, comprise the housing (1) of oil pump, oil-feed cylindrical shell (3), filter screen (5), gland (4) and the joint (2) for connecting housing (1) and oil-feed cylindrical shell (3), there is in joint (2) oil inlet hole (6) of active chamber in connection housing (1) and oil-feed cylindrical shell (3) inner chamber, filter screen (5) is pressed in oil-feed cylindrical shell (3) by gland (4), gland (4) and oil-feed cylindrical shell (3) close-fitting; It is characterized in that: the intracavity bottom of described oil-feed cylindrical shell (3) has annular boss (7) along inner peripheral wall, the end face that the edge of filter screen (5) is close to annular boss (7) is compressed by gland (4).
2. the oil charging structure of change displacement oil pump according to claim 1, it is characterized in that: described gland (4) is the ring-type press strip (8) toward evagination towards one end edge of filter screen (5), and the circumferential edges of filter screen (5) is adjacent to the upper-end surface of annular boss (7) and the lower end surface of ring-type press strip (8) respectively.
3. the oil charging structure of change displacement oil pump according to claim 2, is characterized in that: the inner diameter of described ring-type press strip (8) is identical with the inner diameter of annular boss (7).
4. the oil charging structure of change displacement oil pump according to claim 2, is characterized in that: the axial height of described annular boss (7) is greater than the axial height of ring-type press strip (8).
5. the oil charging structure of change displacement oil pump according to claim 2, it is characterized in that: the inside and outside port of described gland (4) upper annular press strip (8) all has the chamfering (9) for leading, the conical surface of this chamfering (9) and the axis of gland (4) are the angle of 17.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743496.7U CN204312977U (en) | 2014-12-01 | 2014-12-01 | Become the oil charging structure of displacement oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743496.7U CN204312977U (en) | 2014-12-01 | 2014-12-01 | Become the oil charging structure of displacement oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204312977U true CN204312977U (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420743496.7U Active CN204312977U (en) | 2014-12-01 | 2014-12-01 | Become the oil charging structure of displacement oil pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN204312977U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375187A (en) * | 2019-08-26 | 2019-10-25 | 湖南机油泵股份有限公司 | A kind of oil absorption filter screen structure for exempting from riveting |
-
2014
- 2014-12-01 CN CN201420743496.7U patent/CN204312977U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375187A (en) * | 2019-08-26 | 2019-10-25 | 湖南机油泵股份有限公司 | A kind of oil absorption filter screen structure for exempting from riveting |
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| GR01 | Patent grant |