CN205372033U - Take quick -witted fuel pump assembly of voltage limiting valve - Google Patents
Take quick -witted fuel pump assembly of voltage limiting valve Download PDFInfo
- Publication number
- CN205372033U CN205372033U CN201521103448.2U CN201521103448U CN205372033U CN 205372033 U CN205372033 U CN 205372033U CN 201521103448 U CN201521103448 U CN 201521103448U CN 205372033 U CN205372033 U CN 205372033U
- Authority
- CN
- China
- Prior art keywords
- limiting valve
- rotor
- pressure limiting
- spring
- oil
- 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.)
- Expired - Fee Related
Links
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model discloses a take quick -witted fuel pump assembly of voltage limiting valve, including the pump body, pump cover, inner rotor and external rotor, be provided with the rotor shaft hole on the pump body, the big diameter section of inner rotor is provided with annular recessed groove with the root of little diameter section interface, is provided with annular lubrication groove on the inner wall of pump cover, and the lubrication groove is just to the position of engagement of inner rotor with the external rotor, the voltage limiting valve includes spring mounting top cap, cylindrical spiral spring, spring mounting base and U -shaped fitting pin, and when the oil pressure of high pressure chest exceeded the setting value, the fluid of high pressure chest promoted the spring mounting top cap and outwards removes to compression cylindrical spiral spring, the fluid of high pressure chest passes through the connecting hole and flows in in the low pressure oil pocket. Effectively solve the inner rotor and died inner rotor and external rotor meshing position lubricating oil insufficient supply by the card because of lubricating oil contains impurity to and the problem that voltage limiting valve structure is complicated, the installation is inconvenient.
Description
Technical field
This utility model relates to lubricating oil pump technical field, particularly relates to a kind of lubricating oil pump assembly with pressure limiting valve.
Background technology
Lubricating oil pump assembly, is mainly made up of the pump housing, pump cover, internal rotor and outer rotor.Being provided with rotor shaft hatch on the pump housing, rotor shaft hatch is the T-shaped stepped hole that outer imperial palace is little near the termination of pump cover, and pump cover is fixedly mounted on outside rotor shaft hatch and is sealed by T-shaped stepped hole.Outer rotor is annulus, is arranged in the enlarged diameter section of T-shaped stepped hole, and internal rotor is T-shaped ring, the enlarged diameter section of internal rotor and outer rotor engaged transmission, and the reduced diameter section of internal rotor stretches in rotor shaft hatch.It is matched in clearance between outer rotor and T-shaped stepped hole, internal rotor and rotor shaft hatch.During work, internal rotor drives outer rotor to rotate, and owing to being inevitably present aluminum bits or other impurity in lubricating oil, these impurity can cause internal rotor to be stuck；Meanwhile, the mate of internal rotor and outer rotor is usually because lubrication deficient oil supply causes serious wear or rotates abnormal sound.
It is provided with high-voltage oil cavity and low pressure oil pocket in the pump housing, between high-voltage oil cavity and low pressure oil pocket, is provided with pressure limiting valve, when the oil pressure of high-voltage oil cavity exceedes setting value, pressure limiting valve is opened, the fluid of high-voltage oil cavity flows into low pressure oil intracavity, and existing pressure limiting valve structure is complicated, installs inconvenience.
Utility model content
This utility model aims to provide a kind of lubricating oil pump assembly, and effective internal rotor that solves is stuck because lubricating oil is impure, and internal rotor and outer rotor site of engagement lubricate deficient oil supply, and pressure limiting valve structure is complicated, install inconvenient problem.
For this, the technical scheme that this utility model adopts is: a kind of lubricating oil pump assembly with pressure limiting valve, including the pump housing, pump cover, internal rotor and outer rotor, the described pump housing is provided with rotor shaft hatch, rotor shaft hatch is the T-shaped stepped hole that outer imperial palace is little near the termination of pump cover, pump cover is fixedly mounted on outside rotor shaft hatch and is sealed by T-shaped stepped hole, described outer rotor is annulus, it is arranged in the enlarged diameter section of T-shaped stepped hole, internal rotor is T-shaped ring, the enlarged diameter section of internal rotor and outer rotor engaged transmission, the reduced diameter section of internal rotor stretches in rotor shaft hatch, described outer rotor and T-shaped stepped hole, matched in clearance it is between internal rotor and rotor shaft hatch；The described pump housing offers the oilhole communicated with high pressure chest, and the termination of oilhole is provided with plug, and the described pump housing is further opened with the pressure limiting valve installing hole communicated with oilhole；The enlarged diameter section of described internal rotor and the interfacial root of reduced diameter section are provided with ring-shaped depression groove, and the inwall of described pump cover is provided with the oil-way of annular, the described oil-way just position of engagement to internal rotor Yu outer rotor；Described pressure limiting valve installing hole is built with pressure limiting valve, the sidewall of pressure limiting valve installing hole has the connecting hole communicated with low pressure chamber, described pressure limiting valve includes spring and installs top cover, cylindrically coiled spring, spring mounting seat and U-shaped locking pin, four are sequentially arranged in pressure limiting valve installing hole from inside to outside, the medial extremity of described cylindrically coiled spring is fixedly mounted in the endoporus that top cover installed by spring, the outer end of cylindrically coiled spring is fixedly mounted in the endoporus of spring mounting seat, spring is installed the medial extremity of top cover and is against on the step surface of pressure limiting valve installing hole, U-shaped locking pin is horizontally through the sidewall of pressure limiting valve installing hole and is locked；When the oil pressure of high pressure chest exceedes setting value, the fluid of high pressure chest promotes spring to install top cover and is displaced outwardly, and compresses cylindrically coiled spring, and the fluid of high pressure chest flows into low pressure oil intracavity by connecting hole；When the oil pressure of high pressure chest is lower than setting value, cylindrically coiled spring promotes spring to install top cover return, thus being sealed by connecting hole.
Preferred as such scheme, the described pump housing and pump cover are aluminum alloy die casting, internal rotor and outer rotor is metallic sintered products.
Further, the step surface of described pressure limiting valve installing hole is taper surface, and tapered of the medial extremity relative set of top cover installed by spring.
The beneficial effects of the utility model:
(1) setting up ring-shaped depression groove at the enlarged diameter section of internal rotor and the interfacial root of reduced diameter section, when internal rotor drives outer rotor to rotate, the aluminum bits existed in lubricating oil or other impurity can be deposited in annular groove, it is to avoid impurity causes internal rotor stuck；
(2) on the inwall of pump cover, oil-way is had additional, the oil-way just position of engagement to internal rotor Yu outer rotor, oil-way, as lubricant reservoir, can deposit enough lubricating oil and be supplied to the engaged transmission of internal rotor and outer rotor, thus avoiding abnormal sound, increase the service life；
(3) pressure limiting valve structure is simple, easy for installation, low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Detailed description of the invention
By the examples below and in conjunction with accompanying drawing, the utility model is described in further detail:
Shown in Fig. 1 Fig. 2, a kind of lubricating oil pump assembly with pressure limiting valve, mainly it is made up of the pump housing 1, pump cover 2, internal rotor 3, outer rotor 4 and pressure limiting valve.
The pump housing 1 is provided with rotor shaft hatch 1d, is used for armature spindle is installed.Rotor shaft hatch 1d is the T-shaped stepped hole that outer imperial palace is little near the termination of pump cover 2, and pump cover 2 is fixedly mounted on outside rotor shaft hatch 1d and is sealed by T-shaped stepped hole, just internal rotor 3, outer rotor 4 is pushed down.
Outer rotor 4 is annulus, is arranged in the enlarged diameter section of T-shaped stepped hole.Internal rotor 3 is T-shaped ring, the enlarged diameter section of internal rotor 3 and outer rotor 4 engaged transmission, and the enlarged diameter section of internal rotor 3 is with external tooth, and outer rotor 4 is with internal tooth.The reduced diameter section of internal rotor 3 stretches in rotor shaft hatch 1d, it is matched in clearance between outer rotor 4 and T-shaped stepped hole, internal rotor 3 and rotor shaft hatch 1d, with guarantee internal rotor 3, outer rotor 4 install after can flexible rotating, armature spindle drive internal rotor 3 rotate, internal rotor 3 drives outer rotor 4 to rotate.
The enlarged diameter section of internal rotor 3 and the interfacial root of reduced diameter section are provided with ring-shaped depression groove 3a；The inwall of pump cover 2 is provided with the oil-way 2a, oil-way 2a of the annular just position of engagement to internal rotor 3 with outer rotor 4.Preferably, the pump housing 1 and pump cover 2 are aluminum alloy die casting, and internal rotor 3 and outer rotor 4 are metallic sintered products.
Shown in Fig. 1, Fig. 3, the pump housing 1 is divided into high pressure chest and low pressure chamber.Offering the oilhole 1a communicated with high pressure chest on the pump housing 1, the termination of oilhole 1a is provided with plug 9, the pump housing 1 is further opened with the pressure limiting valve installing hole 1b communicated with oilhole 1a, is used for installing limit valve.Pressure limiting valve installing hole 1b, built with pressure limiting valve, the sidewall of pressure limiting valve installing hole 1b has the connecting hole 1c communicated with low pressure chamber.
Pressure limiting valve is installed top cover 5, cylindrically coiled spring 6, spring mounting seat 7 and U-shaped locking pin 8 by spring and is formed, and four are sequentially arranged in pressure limiting valve installing hole 1b from inside to outside.The medial extremity of cylindrically coiled spring 6 is fixedly mounted in the endoporus that top cover 5 installed by spring, the outer end of cylindrically coiled spring 6 is fixedly mounted in the endoporus of spring mounting seat 7, spring is installed the medial extremity of top cover 5 and is against on the step surface of pressure limiting valve installing hole 1b, U-shaped locking pin 8 is horizontally through the sidewall of pressure limiting valve installing hole 1b and is locked, and U-shaped locking pin 8 is used for preventing spring mounting seat 7 from exiting in pressure limiting valve installing hole 1b.
During use, when the oil pressure of high pressure chest exceedes setting value, the fluid of high pressure chest promotes spring to install top cover 5 and is displaced outwardly, and compresses cylindrically coiled spring 6, and the fluid of high pressure chest flows into low pressure oil intracavity by connecting hole 1c；When the oil pressure of high pressure chest is lower than setting value, cylindrically coiled spring 6 promotes spring to install top cover 5 return, thus being sealed by connecting hole 1c.
Preferably, the step surface of pressure limiting valve installing hole 1b is taper surface, and tapered of the medial extremity relative set of top cover 5 installed by spring, increases contact area.
Claims (3)
1. the lubricating oil pump assembly with pressure limiting valve, including the pump housing (1), pump cover (2), internal rotor (3), outer rotor (4) and pressure limiting valve, the described pump housing (1) is provided with rotor shaft hatch (1d), rotor shaft hatch (1d) is the T-shaped stepped hole that outer imperial palace is little near the termination of pump cover (2), pump cover (2) is fixedly mounted on rotor shaft hatch (1d) and is sealed by T-shaped stepped hole outward, described outer rotor (4) is annulus, it is arranged in the enlarged diameter section of T-shaped stepped hole, internal rotor (3) is T-shaped ring, the enlarged diameter section of internal rotor (3) and outer rotor (4) engaged transmission, the reduced diameter section of internal rotor (3) stretches in rotor shaft hatch (1d), described outer rotor (4) and T-shaped stepped hole, it is matched in clearance between internal rotor (3) and rotor shaft hatch (1d)；The described pump housing (1) offers the oilhole (1a) communicated with high pressure chest, and the termination of oilhole (1a) is provided with plug (9), the described pump housing (1) is further opened with the pressure limiting valve installing hole (1b) communicated with oilhole (1a)；It is characterized in that: the enlarged diameter section of described internal rotor (3) and the interfacial root of reduced diameter section are provided with ring-shaped depression groove (3a), the inwall of described pump cover (2) is provided with the oil-way (2a) of annular, described oil-way (2a) the just position of engagement to internal rotor (3) Yu outer rotor (4)；
Described pressure limiting valve installing hole (1b) is built with pressure limiting valve, the sidewall of pressure limiting valve installing hole (1b) has the connecting hole (1c) communicated with low pressure chamber, described pressure limiting valve includes spring and installs top cover (5), cylindrically coiled spring (6), spring mounting seat (7) and U-shaped locking pin (8), four are sequentially arranged in pressure limiting valve installing hole (1b) from inside to outside, the medial extremity of described cylindrically coiled spring (6) is fixedly mounted in the endoporus that top cover (5) installed by spring, the outer end of cylindrically coiled spring (6) is fixedly mounted in the endoporus of spring mounting seat (7), spring is installed the medial extremity of top cover (5) and is against on the step surface of pressure limiting valve installing hole (1b), U-shaped locking pin (8) is horizontally through the sidewall of pressure limiting valve installing hole (1b) and is locked；When the oil pressure of high pressure chest exceedes setting value, the fluid of high pressure chest promotes spring to install top cover (5) and is displaced outwardly, and compresses cylindrically coiled spring (6), and the fluid of high pressure chest flows into low pressure oil intracavity by connecting hole (1c)；When the oil pressure of high pressure chest is lower than setting value, cylindrically coiled spring (6) promotes spring to install top cover (5) return, thus being sealed by connecting hole (1c).
2. the lubricating oil pump assembly with pressure limiting valve according to claim 1, it is characterised in that: the described pump housing (1) and pump cover (2) they are aluminum alloy die casting, and internal rotor (3) and outer rotor (4) they are metallic sintered products.
3. the lubricating oil pump assembly with pressure limiting valve according to claim 1, it is characterised in that: the step surface of described pressure limiting valve installing hole (1b) is taper surface, and tapered of the medial extremity relative set of top cover (5) installed by spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521103448.2U CN205372033U (en) | 2015-12-28 | 2015-12-28 | Take quick -witted fuel pump assembly of voltage limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521103448.2U CN205372033U (en) | 2015-12-28 | 2015-12-28 | Take quick -witted fuel pump assembly of voltage limiting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205372033U true CN205372033U (en) | 2016-07-06 |
Family
ID=56256490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521103448.2U Expired - Fee Related CN205372033U (en) | 2015-12-28 | 2015-12-28 | Take quick -witted fuel pump assembly of voltage limiting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205372033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513284A (en) * | 2019-09-16 | 2019-11-29 | 湖南机油泵股份有限公司 | One kind being convenient for mounted elastically lubricating oil pump |
-
2015
- 2015-12-28 CN CN201521103448.2U patent/CN205372033U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513284A (en) * | 2019-09-16 | 2019-11-29 | 湖南机油泵股份有限公司 | One kind being convenient for mounted elastically lubricating oil pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205372033U (en) | Take quick -witted fuel pump assembly of voltage limiting valve | |
| WO2018036099A1 (en) | Self-lubrication system of power takeoff | |
| CN204784728U (en) | Rotating machinery's oil -sealing arrangement | |
| CN205447222U (en) | Rotor type engine oil pump | |
| CN105423107A (en) | Oil pump assembly | |
| CN218934996U (en) | Self-lubricating crankshaft | |
| CN207195679U (en) | A kind of stop valve | |
| CN205372034U (en) | Rotor formula machine fuel pump assembly | |
| CN104632863B (en) | Automotive bevel gear shaft | |
| CN210771390U (en) | Internal-leakage type oil pump | |
| CN205811768U (en) | A kind of reducing motor seals structure | |
| CN103123039B (en) | Air-pressure lubricating oil lubricator and correction oil injection method thereof | |
| CN210686857U (en) | Workbench transmission structure | |
| CN104675956A (en) | Electric vehicle compound gear | |
| CN205372036U (en) | Antifriction abnormal sound and block dead rotor formula oil pump | |
| CN213684929U (en) | Novel crankshaft | |
| CN202111568U (en) | Motor bearing lubricating device | |
| CN210265724U (en) | Novel tensioner | |
| CN214036505U (en) | Socket joint type shaft ring for deep groove ball bearing | |
| CN204403751U (en) | The multiple tooth shape internal rotor of lubricating pump of a kind of powder metallurgy | |
| CN208719299U (en) | A kind of bevel gear | |
| CN217300896U (en) | Integrated direct-current oil pump motor with pressure protection | |
| CN215567248U (en) | High-stability anti-drop outer sleeve type pulley | |
| CN212337885U (en) | Automobile ball joint | |
| CN211222890U (en) | Long service life's bicycle ratchet subassembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20161228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |