CN209925610U - Oil pump provided with skeleton sealing ring and eccentric ring - Google Patents
Oil pump provided with skeleton sealing ring and eccentric ring Download PDFInfo
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- CN209925610U CN209925610U CN201920718763.8U CN201920718763U CN209925610U CN 209925610 U CN209925610 U CN 209925610U CN 201920718763 U CN201920718763 U CN 201920718763U CN 209925610 U CN209925610 U CN 209925610U
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- oil
- eccentric ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 37
- 239000003921 oil Substances 0.000 description 75
- 238000009434 installation Methods 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
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Abstract
The utility model discloses a be provided with oil pump of skeleton seal circle and eccentric ring, including the pump body, pump cover, eccentric ring, external rotor and inner rotor. The pump body comprises a cylindrical pump body, a cylindrical first cavity is formed in the pump body, and a barrel body with a bottom and without a cover is formed; the bottom of the cylinder is provided with a first through hole for the rotating shaft to pass through, and the first cavity and the first through hole are coaxially arranged; the eccentric ring is arranged in the first cavity and is coaxial with the first cavity, the outer rotor and the inner rotor are arranged in the cavity of the eccentric ring, the inner rotor is fixed on the rotating shaft, and the lower end of the rotating shaft is inserted into the first through hole and extends out of the pump body. Through increasing the eccentric ring, no matter the inner rotor corotation is or reverse rotation, then guaranteed that pump oil gets into from a passageway all the time, flows from another passageway, and inlet port and oil outlet can not exchange. Through set up the skeleton sealing washer in the second cavity, improve sealing performance, prevent that pump oil from spilling from the junction of pivot and the pump body.
Description
Technical Field
The utility model belongs to the technical field of the oil pump, concretely relates to be provided with oil pump of skeleton seal circle and eccentric ring.
Background
Due to the large market demand for light trucks, especially low speed and high load vehicle models, such engines have high quality requirements for oil pumps. Long-term practice proves that in the operation of the engine oil pump, the three factors of pressure, flow and flow rate of lubricating oil at each lubricating part are different from each other in strict meaning, and reliable and reasonable oil supply at each different part is more important.
In the existing oil pump, when the inner rotor rotates forwards or backwards, the oil inlet and the oil outlet can be interchanged, and the requirement is not met. In the traditional oil pump, the rotating shaft penetrates through the pump body to be connected with the output shaft of the motor, the pump body is connected with the engine, but the sealing performance of the joint of the rotating shaft and the pump body is poor, and pump oil leaks from the joint.
Disclosure of Invention
An object of the utility model is to provide a be provided with oil pump of skeleton seal circle and eccentric ring solves current oil pump among the prior art, and when inner rotor corotation and reversal, inlet port and oil outlet can exchange, unsatisfied requirement, and traditional oil pump, the pivot is passed the pump body and is connected with the motor output shaft, the pump body is connected with the engine, but the pivot is poor with the junction sealing performance of the pump body, the technical problem of the phenomenon that the pump oil spills from this point on appears.
The utility model discloses a solve above-mentioned technical problem, adopt following technical scheme:
an oil pump provided with a framework sealing ring and an eccentric ring comprises a pump body, a pump cover, the eccentric ring, an outer rotor and an inner rotor.
The pump body comprises a pump cylindrical pump body, a cylindrical first cavity is formed in the pump body, and a barrel body with a bottom and without a cover is formed; the bottom of the cylinder is provided with a first through hole for the rotating shaft to pass through, and the first cavity and the first through hole are coaxially arranged; the bottom surface undercut of first cavity forms oil feed tank and oil outlet groove, and oil feed passageway and oil outlet channel have been seted up to the bottom of barrel, oil feed tank and oil feed passageway intercommunication, oil outlet groove and oil outlet channel intercommunication, oil feed tank and oil outlet groove distribute in the both sides of first through-hole, and just be symmetrical about first through-hole axis.
The center of the bottom surface of the pump body protrudes downwards to form a cylindrical third boss, the bottom surface of the third boss is sunken upwards to form a circular second cavity, and a framework sealing ring is arranged in the second cavity; the first through hole is communicated with the second cavity and is coaxially arranged with the second cavity, and a framework sealing ring is arranged in the second cavity.
The eccentric ring comprises a cylindrical body, a circular second through hole is formed in the cylindrical body in the height direction, and the axis of the second through hole is parallel to and does not coincide with the axis of the cylindrical body, so that the eccentric ring is formed; the upper end surface of the eccentric ring is downwards sunken to form two steps, and the two steps comprise a first step surface, a second step surface, a first working surface and a second working surface, wherein the first working surface and the second working surface are horizontal planes which are parallel to each other, the first working surface is higher than the second working surface, and the first step surface and the second step surface are vertical surfaces; the eccentric ring is arranged in the first cavity and is coaxial with the first cavity, the outer rotor and the inner rotor are arranged in a second through hole of the eccentric ring, the inner rotor is fixed on the rotating shaft, the lower end of the rotating shaft is inserted into the first through hole and the second concave cavity and extends out of the pump body, and the framework sealing ring is sleeved on the rotating shaft;
the pump cover is connected with the pump body through a screw, a third hole is formed in the bottom surface of the pump cover, and the upper end of the rotating shaft is inserted into the third hole; the bottom surface of pump cover is fixed and is provided with the stopper, and the stopper is arranged in the space that second working face and pump cover formed.
Through setting up first cavity and first through-hole are coaxial, then set up eccentric ring in first cavity, the up end undercut of eccentric ring forms the step form, and external rotor and inner rotor set up in the cavity of eccentric ring, are provided with the stopper simultaneously fixedly on the bottom surface of pump cover, then first step face and second step face all become spacing step. When the inner rotor rotates forwards, the eccentric ring is driven to rotate, and after the eccentric ring rotates for a certain angle, the first step surface abuts against the limiting block; when the inner rotor rotates reversely, the eccentric ring is driven to rotate reversely, and after the eccentric ring rotates for a certain angle, the second step surface abuts against the limiting block. No matter the inner rotor rotates positively or reversely, the pump oil is ensured to enter from one channel and flow out from the other channel all the time, and the oil inlet groove and the oil outlet groove cannot be exchanged.
The third boss is arranged on the bottom surface of the pump body, so that the third boss is small in size, and the installation space is saved; through set up the skeleton sealing washer in the second cavity, improve sealing performance, prevent that pump oil from spilling from the junction of pivot and the pump body.
The cylinder is further improved, three first mounting holes and three second mounting holes are formed in the upper end face of the pump body, and the three first mounting holes and the three second mounting holes are uniformly distributed along the outer edge of the cylinder; three third mounting holes and three fourth mounting holes are formed in the edge of the pump cover and are uniformly distributed along the outer edge of the cylinder; after the pump cover and the pump body are assembled in a matched mode, each first mounting hole and a corresponding third mounting hole are arranged coaxially, and each second mounting hole and a corresponding fourth mounting hole are arranged coaxially; the first mounting hole and the third mounting hole are through holes, and the second mounting hole and the fourth mounting hole are threaded blind holes. The bolt passes corresponding first mounting hole and third mounting hole and then links firmly the pump body and engine, and the lower extreme of screw passes the fourth mounting hole and inserts the second installation and link firmly pump body and pump cover.
In a further improvement, the corresponding central angles of the inner contour arcs of the first working surface and the second working surface are both 180 degrees.
In a further improvement, a fourth through hole is formed in the upper end face of the eccentric ring and is located on the second working face. The fourth through hole is a lubricating oil hole, and pump oil simultaneously flows into a gap between the eccentric ring and the pump body as lubricating oil through the fourth through hole to prevent the eccentric ring from being blocked.
In a further improvement, the height difference between the first working surface and the second working surface is 3-10 mm.
The improved structure is characterized in that the upper end face of the barrel is provided with an annular groove used for embedding the sealing ring, and the annular groove and the first through hole are coaxially arranged. Through set up the sealing ring in annular groove, guarantee pump body and pump cover sealing connection, prevent to leak pump oil.
The oil inlet channel and the oil outlet channel are both straight-line-shaped channels, and the axis extension lines of the oil inlet channel and the oil outlet channel are overlapped and pass through the centers of the first through holes.
The port of the oil inlet channel and the port of the oil outlet channel on the outer wall of the cylinder body are both outwards protruded to form bosses. The oil inlet channel is convenient to be connected with the oil inlet pipe, and the oil outlet channel is connected with the oil outlet pipe.
The improved structure is characterized in that a second boss is arranged on the upper surface of the pump cover and is located right above the third hole. Through setting up the second boss, increase the thickness of third hole department on the pump cover, improve intensity.
Compared with the prior art, the beneficial effects of the utility model are that:
1. through increasing the eccentric ring, and the up end undercut of eccentric ring forms the step form, and first working face is higher than the second working face, and the while is fixed on the bottom surface of pump cover to be provided with the stopper, then first step face and second step face all become spacing step. When the inner rotor rotates forwards, the eccentric ring is driven to rotate, and after the eccentric ring rotates for a certain angle, the first step surface abuts against the limiting block; when the inner rotor rotates reversely, the eccentric ring is driven to rotate reversely, and after the eccentric ring rotates for a certain angle, the second step surface abuts against the limiting block. No matter the inner rotor rotates positively or reversely, the pump oil is ensured to enter from one channel and flow out from the other channel all the time, and the oil inlet hole and the oil outlet hole cannot be interchanged.
2. The third boss is arranged on the bottom surface of the pump body, so that the third boss is small in size, and the installation space is saved; through set up the skeleton sealing washer in the second cavity, improve sealing performance, prevent that pump oil from spilling from the junction of pivot and the pump body.
Drawings
Fig. 1 is a perspective view of the oil pump provided with the framework seal ring and the eccentric ring.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a cross-sectional view C-C of fig. 2.
Fig. 4 is a structural diagram of the eccentric ring of the oil pump of the present invention.
Fig. 5 is a top view of fig. 4.
Fig. 6 is a bottom view of fig. 4.
Fig. 7 is a perspective view of the oil pump body of the present invention.
Fig. 8 is a front view of fig. 7.
Fig. 9 is a sectional view a-a of fig. 8.
Fig. 10 is a sectional view B-B of fig. 8.
Fig. 11 is a perspective view of a pump cap.
Fig. 12 is a bottom view of a pump cap.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the following will combine the embodiments of the present invention to clearly and completely describe the technical solution of the present invention.
As shown in fig. 1 to 12, an oil pump provided with a skeleton seal ring and an eccentric ring includes a pump body 1, a pump cover 5, an eccentric ring 3, an outer rotor 4, and an inner rotor 6.
The pump body 1 comprises a cylindrical pump body, a cylindrical first cavity 12 is arranged on the pump body to form a barrel body 11 with a bottom and without a cover; the bottom of the cylinder is provided with a first through hole 13 for the rotating shaft to pass through, and the first cavity and the first through hole are coaxially arranged; the bottom surface of the first cavity is sunken downwards to form an oil inlet groove 1901 and an oil outlet groove 1902, the bottom of the cylinder body is provided with an oil inlet channel 17 and an oil outlet channel 18, the oil inlet groove is communicated with the oil inlet channel, the oil outlet groove is communicated with the oil outlet channel, and the oil inlet groove and the oil outlet groove are distributed on two sides of the first through hole and are symmetrical about the axis of the first through hole.
The center of the bottom surface of the pump body 1 protrudes downwards to form a cylindrical third boss 19, the bottom surface of the third boss is recessed upwards to form a circular second concave cavity, and a framework sealing ring 7 is arranged in the second concave cavity; the first through hole is communicated with the second cavity and is coaxially arranged with the second cavity, and a framework sealing ring 7 is arranged in the second cavity.
The eccentric ring 3 comprises a cylindrical body, a circular second through hole is formed in the cylindrical body along the height direction, and the axis of the second through hole is parallel to and does not coincide with the axis of the cylindrical body, so that the eccentric ring is formed; the upper end surface of the eccentric ring is downwards sunken to form two steps, wherein the two steps comprise a first step surface, a second step surface, a first working surface and a second working surface, the first working surface 31 and the second working surface 32 are horizontal planes which are parallel to each other, the first working surface is higher than the second working surface, and the first step surface and the second step surface are vertical surfaces; the eccentric ring is arranged in the first cavity and is coaxial with the first cavity, the outer rotor 4 and the inner rotor 6 are arranged in the second through hole of the eccentric ring 3, the inner rotor 6 is fixed on the rotating shaft 2, the lower end of the rotating shaft 2 is inserted into the first through hole 13 and the second concave cavity and extends out of the pump body, and the framework sealing ring 7 is sleeved on the rotating shaft 2.
The pump cover 5 is connected with the pump body 1 through screws, a third through hole 54 is formed in the bottom surface of the pump cover, and the upper end of the rotating shaft 2 is inserted into the third through hole 54; the bottom surface of pump cover is fixed and is provided with stopper 55, and the stopper is arranged in the space that second working face and pump cover formed.
Through setting up first cavity and first through-hole are coaxial, then set up eccentric ring in first cavity, the up end undercut of eccentric ring forms the step form, and external rotor and inner rotor set up in the cavity of eccentric ring, are provided with the stopper simultaneously fixedly on the bottom surface of pump cover, then first step face and second step face all become spacing step. When the inner rotor rotates forwards, the eccentric ring is driven to rotate, and after the eccentric ring rotates for a certain angle, the first step surface abuts against the limiting block; when the inner rotor rotates reversely, the eccentric ring is driven to rotate reversely, and after the eccentric ring rotates for a certain angle, the second step surface abuts against the limiting block. No matter the inner rotor rotates positively or reversely, the pump oil is ensured to enter from one channel and flow out from the other channel all the time, and the oil inlet groove and the oil outlet groove cannot be exchanged.
The third boss 19 is arranged on the bottom surface of the pump body 1, so that the volume of the third boss is small, and the installation space is saved; through set up skeleton sealing washer 7 in the second cavity, improve sealing performance, prevent that pump oil from spilling from the junction of pivot and the pump body.
In this embodiment, the upper end surface of the pump body 1 is provided with three first mounting holes 14 and three second mounting holes 15, and the three first mounting holes and the three second mounting holes are uniformly distributed along the outer edge of the cylinder; the edge of the pump cover 5 is provided with three third mounting holes 52 and three fourth mounting holes 53 which are uniformly distributed along the outer edge of the cylinder; after the pump cover and the pump body are assembled in a matched mode, each first mounting hole and a corresponding third mounting hole are arranged coaxially, and each second mounting hole and a corresponding fourth mounting hole are arranged coaxially; the first mounting hole and the third mounting hole are through holes, and the second mounting hole and the fourth mounting hole are threaded blind holes. The bolt passes corresponding first mounting hole and third mounting hole and then links firmly the pump body and engine, and the lower extreme of screw passes the fourth mounting hole and inserts the second installation and link firmly pump body and pump cover.
In this embodiment, the corresponding central angles of the inner contour arcs of the first working surface and the second working surface are both 180 degrees.
In this embodiment, a fourth through hole 33 is formed on the upper end surface of the eccentric ring 3, and the fourth through hole is located on the second working surface. The fourth through hole is a lubricating oil hole and prevents the eccentric ring from being blocked.
In this embodiment, the height difference between the first working surface and the second working surface is 6 mm. In other embodiments, the difference in height between the first work surface and the second work surface may be any other value between 3-10 mm.
In this embodiment, an annular groove 16 for embedding a sealing ring is formed in the upper end surface of the cylinder 11, and the annular groove and the first through hole are coaxially arranged. Through set up the sealing ring in annular groove, guarantee pump body and pump cover sealing connection, prevent to leak pump oil.
In this embodiment, the oil inlet channel 17 and the oil outlet channel 18 are both straight-line channels, and the axial extension lines of the oil inlet channel and the oil outlet channel are overlapped and both pass through the center of the first through hole.
In this embodiment, the ports of the oil inlet channel and the oil outlet channel on the outer wall of the cylinder 11 both protrude outwards to form a boss 1903. The oil inlet channel is convenient to be connected with the oil inlet pipe, and the oil outlet channel is connected with the oil outlet pipe.
In this embodiment, the pump cover 5 is provided with a second boss 51 on the upper surface thereof, and a second boss 52 is located directly above the third hole. Through setting up the second boss, increase the thickness of third through-hole department on the pump cover, improve intensity.
What has not been described in detail in the present invention is the prior art or can be realized by the prior art, and the specific embodiment of the present invention is only the preferred embodiment of the present invention, which is not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the content of the claims of the present invention should be regarded as the technical scope of the present invention.
Claims (9)
1. An oil pump provided with a framework sealing ring and an eccentric ring is characterized by comprising a pump body, a pump cover, the eccentric ring, an outer rotor and an inner rotor;
the pump body comprises a cylindrical pump body, a cylindrical first cavity is formed in the pump body, and a barrel body with a bottom and without a cover is formed; the bottom of the cylinder is provided with a first through hole for the rotating shaft to pass through, and the first cavity and the first through hole are coaxially arranged; the bottom surface of the first cavity is sunken downwards to form an oil inlet groove and an oil outlet groove, the bottom of the cylinder is provided with an oil inlet channel and an oil outlet channel, the oil inlet groove is communicated with the oil inlet channel, the oil outlet groove is communicated with the oil outlet channel, and the oil inlet groove and the oil outlet groove are distributed on two sides of the first through hole and are symmetrical about the axis of the first through hole;
the center of the bottom surface of the pump body protrudes downwards to form a cylindrical third boss, the bottom surface of the third boss is recessed upwards to form a circular second cavity, the first through hole is communicated with the second cavity and is coaxially arranged with the second cavity, and a framework sealing ring is arranged in the second cavity;
the eccentric ring comprises a cylindrical body, a circular second through hole is formed in the cylindrical body in the height direction, and the axis of the second through hole is parallel to and does not coincide with the axis of the cylindrical body, so that the eccentric ring is formed; the upper end surface of the eccentric ring is downwards sunken to form two steps, and the two steps comprise a first step surface, a second step surface, a first working surface and a second working surface, wherein the first working surface and the second working surface are horizontal planes which are parallel to each other, the first working surface is higher than the second working surface, and the first step surface and the second step surface are vertical surfaces; the eccentric ring is arranged in the first cavity and is coaxial with the first cavity, the outer rotor and the inner rotor are arranged in a second through hole of the eccentric ring, the inner rotor is fixed on the rotating shaft, the lower end of the rotating shaft is inserted into the first through hole and the second concave cavity and extends out of the pump body, and the framework sealing ring is sleeved on the rotating shaft;
the pump cover is connected with the pump body through a screw, a third through hole is formed in the bottom surface of the pump cover, and the upper end of the rotating shaft is inserted into the third through hole; the bottom surface of pump cover is fixed and is provided with the stopper, and the stopper is arranged in the space that second working face and pump cover formed.
2. The oil pump with the framework sealing ring and the eccentric ring according to claim 1, wherein the upper end surface of the pump body is provided with three first mounting holes and three second mounting holes, and the three first mounting holes and the three second mounting holes are uniformly distributed along the outer edge of the cylinder body; three third mounting holes and three fourth mounting holes are formed in the edge of the pump cover and are uniformly distributed along the outer edge of the cylinder; after the pump cover and the pump body are assembled in a matched mode, each first mounting hole and a corresponding third mounting hole are arranged coaxially, and each second mounting hole and a corresponding fourth mounting hole are arranged coaxially; the first mounting hole and the third mounting hole are through holes, and the second mounting hole and the fourth mounting hole are threaded blind holes.
3. The oil pump provided with the skeleton sealing ring and the eccentric ring according to claim 1 or 2, wherein the inner contour arcs of the first working surface and the second working surface are both 180 degrees corresponding to the central angle.
4. The oil pump with the framework sealing ring and the eccentric ring as claimed in claim 3, wherein a fourth through hole is formed in the upper end face of the eccentric ring, and the fourth through hole is located on the second working face.
5. The oil pump provided with the skeleton sealing ring and the eccentric ring according to claim 4, wherein the height difference between the first working surface and the second working surface is 3-10 mm.
6. The oil pump with the framework sealing ring and the eccentric ring according to claim 5, wherein an annular groove for embedding the sealing ring is formed in the upper end face of the cylinder body, and the annular groove and the first through hole are coaxially arranged.
7. The oil pump with the framework sealing ring and the eccentric ring as claimed in claim 6, wherein the oil inlet passage and the oil outlet passage are both straight passages, and the extension lines of the axes of the oil inlet passage and the oil outlet passage are coincident and both pass through the center of the first through hole.
8. The oil pump with the framework sealing ring and the eccentric ring as claimed in claim 7, wherein the ports of the oil inlet channel and the oil outlet channel on the outer wall of the cylinder body are both protruded outwards to form a first boss.
9. The oil pump with the framework sealing ring and the eccentric ring as claimed in claim 8, wherein a second boss is arranged on the upper surface of the pump cover, and the second boss is located right above the third through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920718763.8U CN209925610U (en) | 2019-05-17 | 2019-05-17 | Oil pump provided with skeleton sealing ring and eccentric ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920718763.8U CN209925610U (en) | 2019-05-17 | 2019-05-17 | Oil pump provided with skeleton sealing ring and eccentric ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925610U true CN209925610U (en) | 2020-01-10 |
Family
ID=69091401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920718763.8U Expired - Fee Related CN209925610U (en) | 2019-05-17 | 2019-05-17 | Oil pump provided with skeleton sealing ring and eccentric ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925610U (en) |
-
2019
- 2019-05-17 CN CN201920718763.8U patent/CN209925610U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: The utility model relates to an oil pump provided with a skeleton sealing ring and an eccentric ring Effective date of registration: 20211214 Granted publication date: 20200110 Pledgee: China Construction Bank Co.,Ltd. Nanjing Gaochun sub branch Pledgor: Nanjing Shunhui Oil Pump Manufacturing Co.,Ltd. Registration number: Y2021980014948 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230912 Granted publication date: 20200110 Pledgee: China Construction Bank Co.,Ltd. Nanjing Gaochun sub branch Pledgor: Nanjing Shunhui Oil Pump Manufacturing Co.,Ltd. Registration number: Y2021980014948 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |