CN115788861A - Oil pump with double overflow valve structure - Google Patents
Oil pump with double overflow valve structure Download PDFInfo
- Publication number
- CN115788861A CN115788861A CN202211543560.2A CN202211543560A CN115788861A CN 115788861 A CN115788861 A CN 115788861A CN 202211543560 A CN202211543560 A CN 202211543560A CN 115788861 A CN115788861 A CN 115788861A
- Authority
- CN
- China
- Prior art keywords
- oil
- oil pump
- overflow valve
- support column
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses an oil pump with a double-overflow valve structure, which comprises an oil pump shell, wherein a filter element and a rotor for absorbing oil are arranged in the oil pump shell, an oil pump oil inlet communicated with the filter element and an oil pump oil outlet communicated with the oil outlet of the filter element are formed in the oil pump shell, and a first overflow valve for communicating the filter element with the oil pump oil inlet and a second overflow valve for communicating the filter element with the oil pump oil outlet are arranged in the oil pump shell. The oil pump with the double-overflow valve structure integrates the double-overflow valve structure on the oil pump through the ingenious design of the oil pump, the inner rotor and the outer rotor absorb oil, the filter element filters the oil, and the oil is discharged from the oil outlet of the oil pump, so that the lubrication of the gearbox and parts of the gearbox is realized. When the filter element is blocked or the two-axis oil way is blocked, the oil way can be ensured to be smooth, and the overhigh pressure of the system is avoided.
Description
Technical Field
The invention relates to the technical field of vehicle parts, in particular to an oil pump with a double-overflow valve structure.
Background
The oil pump is one of the most important assemblies of the gearbox, and the quality of the technical condition of the oil pump has great influence on the service performance and the service life of the gearbox. When the engine runs, no matter whether the automobile runs or not, the oil pump runs to provide pressure oil for the gearbox.
The application number is 201520515677.9, the name is "a gearbox oil pump relief valve" discloses a gearbox oil pump relief valve in the patent, including the inside safety valve plunger of the safety valve opening that all lies in to set up on the oil pump, the relief valve plug screw, a spring, no. two springs, the outer wall of safety valve plunger and the inner wall sliding fit of safety valve opening, a spring, the equal axial setting of No. two springs, the both ends of a spring respectively with the one end of safety valve plunger, the one end butt of relief valve plug screw, the one end of No. two springs and the inner wall butt of oil pump, the other end cover is established in the outside of the lug that the relief valve plunger other end set up.
The patent with the application number of 202220996595.0 entitled "engineering machinery closed type speed change gear shift hydraulic system" discloses an engineering machinery closed type speed change gear shift hydraulic system, and the major structure thereof comprises a hydraulic oil tank, an oil source, a reversing valve, a clutch and an overflow valve, wherein an oil suction port of the oil source is connected with the hydraulic oil tank, an oil outlet of the oil source is respectively connected with a port B of the reversing valve and a port B of the clutch and the overflow valve, the reversing valve is connected with a port A of the clutch, the port B of the clutch is communicated with the port A of the clutch, and the overflow valve is also connected with the hydraulic oil tank.
In the prior art, the gearbox oil pump has no overflow valve, and an overflow valve (safety) needs to be independently designed and installed on an oil passage at an outlet of the oil pump or a bypass overflow valve needs to be designed and installed beside an oil passage of a filter element. The existing oil pump for the gearbox has dispersed structure, more parts and high cost.
Disclosure of Invention
The invention aims to solve the defects of the background technology, and provides an oil pump with a double overflow valve structure, which ensures that an oil passage is smooth, an inner rotor and an outer rotor run normally and the structure is stable when the system pressure is overhigh due to the blockage of a filter element or the blockage of a two-shaft oil passage.
In order to achieve the purpose, the oil pump with the double-overflow valve structure comprises an oil pump shell, wherein a filter element and a rotor for sucking oil are arranged in the oil pump shell, an oil pump oil inlet communicated with the filter element and an oil pump oil outlet communicated with the oil outlet of the filter element are formed in the oil pump shell, and a first overflow valve and a second overflow valve are arranged in the oil pump shell and are used for communicating the filter element and the oil pump oil inlet and communicating the filter element and the oil pump oil outlet.
Furthermore, an oil inlet channel is communicated between the oil inlet of the oil pump and the filter element, the rotor is arranged in the oil inlet channel, a first connecting channel is connected between the oil inlet channel and the oil inlet of the oil pump, and the first overflow valve is connected in the first connecting channel.
Furthermore, an oil outlet channel is communicated between the oil outlet of the filter element and the oil outlet of the oil pump, a second connecting channel is connected between the oil outlet channel and the oil inlet channel, and a second overflow valve is connected in the second connecting channel.
Further, the opening pressure of the second overflow valve is smaller than the opening pressure of the first overflow valve.
Furthermore, one end of the first connecting channel is communicated with the oil inlet channel, a first overflow valve installation cavity is connected between the other end of the first connecting channel and the oil inlet of the oil pump, the first overflow valve is coaxially arranged in the first overflow valve installation cavity, and the first overflow valve comprises a first support column and a first spring which is used for pushing the first support column to seal the other end of the first connecting channel.
Furthermore, the front end of the first support column is of a cone frustum structure used for plugging the other end of the first connecting channel, the rear part of the first support column is of a stepped shaft structure, the first spring in a compressed state is coaxially arranged on the stepped shaft structure of the first support column, and two ends of the first spring are respectively connected with the stepped shaft structure of the first support column and the oil pump shell.
Furthermore, one end of the second connecting channel is communicated with the oil outlet channel, a second overflow valve installation cavity is connected between the other end of the second connecting channel and the oil inlet channel, the second overflow valve is coaxially arranged in the second overflow valve installation cavity, and the second overflow valve comprises a second support column and a second spring which is used for pushing the second support column to seal a communication port of the oil inlet channel and the first overflow valve installation cavity and prevent the oil inlet channel from being communicated with the second overflow valve installation cavity.
Furthermore, the front end of the second support column is of a cone frustum structure used for plugging the communication port of the oil inlet channel and the first overflow valve installation cavity, the rear part of the second support column is of a stepped shaft structure, the second spring in a compressed state is coaxially arranged on the stepped shaft structure of the second support column, and two ends of the second spring are respectively connected with the stepped shaft structure of the second support column and the oil pump shell.
Further, the rotor comprises an inner rotor driven by the motor and an outer rotor eccentrically connected to the inner rotor.
Furthermore, an oil passage is formed between the outer surface of the inner rotor and the inner surface of the outer rotor.
The invention has the beneficial effects that: the oil pump with the double-overflow valve structure integrates the double-overflow valve structure on the oil pump through the ingenious design of the oil pump, the inner rotor and the outer rotor absorb oil, the filter element filters the oil, and the oil is discharged from the oil outlet of the oil pump, so that the lubrication of the gearbox and parts of the gearbox is realized. When the filter element is blocked or the two-axis oil way is blocked, the smoothness of the oil way can be ensured, and the overhigh pressure of the system is avoided.
Drawings
Fig. 1 is a perspective view of an oil pump having a double relief valve structure according to the present invention;
FIG. 2 is a view taken along line C of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a front view of an oil pump having a double relief valve structure according to the present invention;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;
FIG. 6 is a perspective view of the connection of the inner and outer rotors of the present invention;
the oil pump comprises an oil pump inlet 1, an oil pump outlet 2, a filter element 3, a first overflow valve 4.1-a first support column, a first spring 4.2-a first plug 4.3-a first plug), a second overflow valve 5.1-a second support column, a second spring 5.2-a second plug 5.3-a second plug, an inner rotor 6, an outer rotor 7, an oil inlet channel 8, an oil outlet channel 9, a first connecting channel 10, an overflow channel 11, a second connecting channel 12, a bolt 13, and an oil pump shell 14 (an oil pump upper shell 14.1 and an oil pump lower shell 14.2).
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The oil pump with the double overflow valve structure as shown in fig. 1-6 comprises an oil pump housing 14, wherein a filter element 3 and a rotor for sucking oil are arranged in the oil pump housing 14, an oil pump oil inlet 1 communicated with the filter element 3 and an oil pump oil outlet 2 communicated with the oil outlet of the filter element 3 are formed in the oil pump housing 14, and a first overflow valve 4 for communicating the filter element 3 with the oil pump oil inlet 1 and a second overflow valve 5 for communicating the filter element 3 with the oil pump oil outlet 2 are arranged in the oil pump housing 14. An oil inlet channel 8 is communicated between the oil inlet 1 of the oil pump and the filter element 3, the rotor is arranged in the oil inlet channel 8 and comprises an inner rotor 6 driven by a motor and an outer rotor 7 eccentrically connected to the inner rotor 6, and an oil passing channel is arranged between the outer surface of the inner rotor 6 and the inner surface of the outer rotor 7. A first connecting channel 10 is connected between the oil inlet channel 8 and the oil inlet 1 of the oil pump, and the first overflow valve 4 is connected in the first connecting channel 10. An oil outlet channel 9 is communicated between the oil outlet of the filter element 3 and the oil outlet 2 of the oil pump, a second connecting channel 12 is connected between the oil outlet channel 9 and the oil inlet channel 8, and a second overflow valve 5 is connected in the second connecting channel 12. The opening pressure of the second relief valve 5 is smaller than the opening pressure of the first relief valve 4.
As shown in fig. 5, one end of the first connecting passage 10 is communicated with the oil inlet passage 8, a first overflow valve installation cavity is connected between the other end of the first connecting passage 10 and the oil inlet 2 of the oil pump, the first overflow valve 4 is coaxially arranged in the first overflow valve installation cavity, and the first overflow valve 4 comprises a first support column 4.1 and a first spring 4.2 which is used for pushing the first support column 4.1 to seal the other end of the first connecting passage 10. The front end of the first support column 4.1 is a cone frustum structure for plugging the other end of the first connecting channel 10, the rear part of the first support column 4.1 is a stepped shaft structure, a first spring 4.2 in a compressed state is coaxially arranged on the stepped shaft structure of the first support column 4.1, and two ends of the first spring 4.2 are respectively connected with the stepped shaft structure of the first support column 4.1 and the oil pump shell 14.
As shown in fig. 5, one end of the second connecting passage 12 is communicated with the oil outlet passage 9, a second overflow valve installation cavity is connected between the other end of the second connecting passage 12 and the oil inlet passage 8, the second overflow valve 5 is coaxially arranged in the second overflow valve installation cavity, the second overflow valve 5 comprises a second support column 5.1 and a second spring 5.2 which is used for pushing the second support column 5.1 to seal the communication port of the oil inlet passage 8 and the first overflow valve installation cavity, and the oil inlet passage 8 is prevented from being communicated with the second overflow valve installation cavity. The front end of the second support column 5.1 is of a cone frustum structure used for plugging a communication port of the oil inlet channel 8 and the first overflow valve installation cavity, the rear part of the second support column 5.1 is of a stepped shaft structure, a second spring 5.2 in a compression state is coaxially arranged on the stepped shaft structure of the second support column 5.1, and two ends of the second spring are respectively connected with the stepped shaft structure of the second support column 5.1 and the oil pump shell 14.
In the invention, when the filter element 3 is blocked due to impurities, the oil inlet channel 8 is blocked, the pressure is increased, the conical valve head of the second support column 5.1 compresses the second spring 5.2, the second overflow valve 5 is opened, oil is sucked by the oil inlet 1 of the oil pump, is sucked by the rotation of the inner rotor 6 and the outer rotor 7 with the serial number, enters the oil inlet channel 8, passes through the second overflow valve 5, enters the second connecting channel 12, then enters the oil outlet channel 9, is discharged by the oil outlet 2 of the oil pump, and lubricates parts needing to be lubricated. When the oil passages of the two-shaft assembly and the like are blocked, the oil outlet 2 of the oil pump is not smooth, the pressure of the oil outlet 2 of the oil pump is too high, the oil is pushed against the first support column 4.1 to compress the first spring 4.2, the first overflow valve 4 is opened, the oil is absorbed by the oil inlet 1 of the oil pump, is sucked by the rotation of the inner rotor 6 and the outer rotor 7, enters the oil inlet channel 8, passes through the first connecting channel 10, passes through the first overflow valve 1, and returns to the oil inlet 1 of the oil pump through the overflow channel 11, so that the oil pump is protected.
The oil pump with the double-overflow valve structure is designed by skillfully designing the oil pump, the double-overflow valve structure is integrated on the oil pump, oil is absorbed by the inner rotor and the outer rotor, the filter element 3 filters oil, and oil is discharged from the oil outlet 2 of the oil pump, so that lubrication of a gearbox and parts of the gearbox is realized. When the filter element is blocked or the two-axis oil way is blocked, the oil way can be ensured to be smooth, and the overhigh pressure of the system is avoided.
Here, it should be noted that the description of the above technical solutions is exemplary, the present specification may be embodied in different forms, and should not be construed as being limited to the technical solutions set forth herein. Rather, these descriptions are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solution of the present invention is limited only by the scope of the claims. Where the terms "comprising", "having" and "including" are used in this specification, there may be another part or parts, and the terms used may generally be singular or may refer to plural forms. It should be noted that although the terms "first," "second," "top," "bottom," "one side," "another side," "one end," "another end," and the like may be present and used in this specification to describe various components, these components and parts should not be limited by these terms. These terms are only used to distinguish one element or section from another element or section. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with the top and bottom elements being interchangeable or switchable with one another, where appropriate, without departing from the scope of the present description; the components at one end and the other end may be of the same or different properties to each other. Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical spirit of the present invention should be considered to be within the scope of the present invention.
Claims (10)
1. The utility model provides an oil pump with two overflow valve structures, includes oil pump housing (14), be provided with filter core (3) in the oil pump housing (14) and be used for absorbing the rotor of fluid, set up on oil pump housing (14) with oil pump oil inlet (1) of filter core (3) intercommunication and with oil pump oil-out (2) of the oil-out intercommunication of filter core (3), its characterized in that: the oil pump is characterized in that a first overflow valve (4) used for communicating the filter element (3) with the oil pump oil inlet (1) and a second overflow valve (5) used for communicating the filter element (3) with the oil pump oil outlet (2) are arranged in the oil pump shell (14).
2. The oil pump having a double relief valve structure as claimed in claim 1, wherein: the oil pump is characterized in that an oil inlet channel (8) is communicated between the oil pump oil inlet (1) and the filter element (3), the rotor is arranged in the oil inlet channel (8), a first connecting channel (10) is connected between the oil inlet channel (8) and the oil pump oil inlet (1), and a first overflow valve (4) is connected in the first connecting channel (10).
3. An oil pump having a double relief valve structure according to claim 2, characterized in that: an oil outlet channel (9) is communicated between the oil outlet of the filter element (3) and the oil outlet (2) of the oil pump, a second connecting channel (12) is connected between the oil outlet channel (9) and the oil inlet channel (8), and a second overflow valve (5) is connected into the second connecting channel (12).
4. The oil pump having a double relief valve structure according to claim 1 or 3, characterized in that: the opening pressure of the second overflow valve (5) is smaller than that of the first overflow valve (4).
5. The oil pump having a double relief valve structure as set forth in claim 2, characterized in that: one end of the first connecting channel (10) is communicated with the oil inlet channel (8), a first overflow valve installation cavity is connected between the other end of the first connecting channel (10) and the oil inlet (2) of the oil pump, the first overflow valve (4) is coaxially arranged in the first overflow valve installation cavity, and the first overflow valve (4) comprises a first support column (4.1) and a first spring (4.2) which is used for pushing the first support column (4.1) to seal the other end of the first connecting channel (10).
6. The oil pump having a double relief valve structure according to claim 5, characterized in that: the front end of the first support column (4.1) is a cone frustum structure used for plugging the other end of the first connecting channel (10), the rear part of the first support column (4.1) is of a stepped shaft structure, the first spring (4.2) in a compression state is coaxially arranged on the stepped shaft structure of the first support column (4.1), and two ends of the first spring (4.2) are respectively connected with the stepped shaft structure of the first support column (4.1) and the oil pump shell (14).
7. An oil pump having a double relief valve structure according to claim 3, characterized in that: one end of the second connecting channel (12) is communicated with the oil outlet channel (9), a second overflow valve installation cavity is connected between the other end of the second connecting channel (12) and the oil inlet channel (8), the second overflow valve (5) is coaxially arranged in the second overflow valve installation cavity, and the second overflow valve (5) comprises a second support column (5.1) and a second spring (5.2) which is used for pushing the second support column (5.1) to seal a communication port of the oil inlet channel (8) and the first overflow valve installation cavity and prevent the oil inlet channel (8) from being communicated with the second overflow valve installation cavity.
8. The oil pump having a double relief valve structure according to claim 7, characterized in that: the front end of the second support column (5.1) is a cone frustum structure used for plugging the communication port of the oil inlet channel (8) and the first overflow valve mounting cavity, the rear part of the second support column (5.1) is of a stepped shaft structure, the stepped shaft structure of the second support column (5.1) is coaxially provided with a second spring (5.2) in a compression state, and two ends of the second spring are respectively connected with the stepped shaft structure of the second support column (5.1) and the oil pump shell (14).
9. An oil pump having a double relief valve structure according to claim 1, characterized in that: the rotor comprises an inner rotor (6) driven by a motor and an outer rotor (7) eccentrically connected to the inner rotor (6).
10. The oil pump having a double relief valve structure according to claim 9, characterized in that: an oil passage is arranged between the outer surface of the inner rotor (6) and the inner surface of the outer rotor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211543560.2A CN115788861A (en) | 2022-11-30 | 2022-11-30 | Oil pump with double overflow valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211543560.2A CN115788861A (en) | 2022-11-30 | 2022-11-30 | Oil pump with double overflow valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115788861A true CN115788861A (en) | 2023-03-14 |
Family
ID=85445344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211543560.2A Pending CN115788861A (en) | 2022-11-30 | 2022-11-30 | Oil pump with double overflow valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115788861A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117128434A (en) * | 2023-10-26 | 2023-11-28 | 山东豪迈机械制造有限公司 | Integrated valve block, oil circuit system and compressor |
-
2022
- 2022-11-30 CN CN202211543560.2A patent/CN115788861A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117128434A (en) * | 2023-10-26 | 2023-11-28 | 山东豪迈机械制造有限公司 | Integrated valve block, oil circuit system and compressor |
| CN117128434B (en) * | 2023-10-26 | 2024-02-20 | 山东豪迈机械制造有限公司 | Integrated valve block, oil circuit system and compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7487636B1 (en) | Hydraulic drive apparatus | |
| CN108869022B (en) | Power takeoff | |
| CN115788861A (en) | Oil pump with double overflow valve structure | |
| CN103994155A (en) | Clutch housing | |
| CN110185777B (en) | Gearbox filter shell blank and processing method thereof | |
| CN212690333U (en) | Gear pump capable of being used for forward and reverse rotation | |
| CN113154020B (en) | Gearbox rear shell integrated with inner oil duct | |
| CN203926485U (en) | A kind of clutch housing | |
| CN110397485A (en) | Engine oil pump | |
| CN113339099B (en) | Power take-off system of integrated oil pump and gearbox | |
| CN113431892B (en) | Multifunctional transmission rear shell integrated with inner oil duct | |
| CN213270266U (en) | Vacuum roots pump capable of filtering impurities | |
| CN213270963U (en) | Electric power assembly forced lubrication system | |
| CN105164420A (en) | Two-shaft rotary pump | |
| CN209145863U (en) | Screw compressor, air-conditioning and vehicle | |
| CN208221563U (en) | Single countershaft transmission main tank lubricating structure | |
| CN215058163U (en) | Two-stage screw compressor cylinder | |
| CN109969259B (en) | Electric oil pump assembly and vehicle with same | |
| CN218718703U (en) | Transmission integrated lubricating system, transmission and vehicle | |
| CN213331506U (en) | Positive and negative gear pump with constant flow direction | |
| CN214304353U (en) | Dry-type oil-free screw compressor | |
| CN216975722U (en) | Novel hydraulic system lubricating structure | |
| CN203926483U (en) | A kind of clutch housing | |
| CN209761590U (en) | Fuel oil filter assembly and V-shaped engine | |
| CN219953659U (en) | Integral type oil injection screw vacuum pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |