CN205937094U - Single cylinder diesel petroleum pump - Google Patents
Single cylinder diesel petroleum pump Download PDFInfo
- Publication number
- CN205937094U CN205937094U CN201620808731.3U CN201620808731U CN205937094U CN 205937094 U CN205937094 U CN 205937094U CN 201620808731 U CN201620808731 U CN 201620808731U CN 205937094 U CN205937094 U CN 205937094U
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- China
- Prior art keywords
- rotor
- oil
- transmission shaft
- single cylinder
- cylinder diesel
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- 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.)
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- Rotary Pumps (AREA)
Abstract
The utility model discloses a single cylinder diesel petroleum pump, include: have the pump body of certain inner space, be equipped with shaft hole and rotor groove this pump body intercommunication, locate transmission shaft in the shaft hole, and locate the rotor subassembly of rotor inslot, wherein, rotor subassembly suit in on the transmission shaft, the rotor subassembly including from inside to outside in proper order the suit in epaxial inner rotor of transmission and external rotor, the inner rotor with the transmission shaft is connected through a detachable trundle optionally, the inner rotor is followed the rotation of transmission shaft and rotating, the external rotor is followed eccentric motion is made to the inner rotor. According to the utility model discloses, it can obtain to ensure to reduce processing, assembly costs reaching reduction part and process and structure complexity under the prerequisite of the same requirement, reduces the weeping incidence, improves pump oil and assembly efficiency's beneficial effect.
Description
Technical field
The utility model is related to a kind of oil transfer pump, particularly to a kind of single cylinder diesel oil transfer pump.
Background technology
With Single Cylinder Diesel Engine Emission code enforcement, former Single Cylinder Diesel Engine Emission can not meet existing emission regulation demands, needs
Single cylinder diesel structure innovation is improved to reach emission regulation demands.Wherein single cylinder diesel fuel system part is important
Improve part.Single cylinder diesel oil transfer pump is single cylinder diesel fuel system part vitals, and single cylinder diesel oil transfer pump is made
With being that oil tank fuel is conveyed to single cylinder diesel fuel system with certain pressure and flow it is ensured that single cylinder diesel fuel system
Fuel oil is stably supplied, and makes single cylinder diesel stable performance, discharge low.
Single cylinder diesel oil transfer pump at this stage suffers from the drawback that：
1. high cost, pump oil efficiency is low；
2. it is susceptible to leak；
3. power transmission shaft and the wear condition of oil sealing are unable to monitor in real time, thus can not change in time.
Utility model content
For weak point present in above-mentioned technology, the purpose of this utility model is to provide a kind of single cylinder diesel oil transportation
Pump, it is ensured that reducing part and operation and structure complexity on the premise of reaching identical requirement, reduces processing, assembly cost, subtracts
Few leakage incidence, improves pump oil and efficiency of assembling.
In order to realize according to above-mentioned purpose of the present utility model and other advantages, there is provided a kind of single cylinder diesel oil transportation
Pump is it is characterised in that include：
There is the pump housing of certain inner space, this pump housing is communicatively provided with axis hole and rotor slot；
Power transmission shaft in described axis hole；And
Rotor assembly in described rotor slot,
Wherein, described rotor assembly is set on described power transmission shaft, and described rotor assembly includes being set with successively from inside to outside
Internal rotor on described power transmission shaft and outer rotor, described internal rotor and described power transmission shaft pass through a dismountable trundle and select
Property ground connect, described internal rotor rotates with the rotation of described power transmission shaft, and described outer rotor makees eccentric motion with described internal rotor,
The diapire of described rotor slot is provided with least one pair of meniscate crescent.
Preferably, on described power transmission shaft, the one end away from described rotor assembly is set with ball bearing.
Preferably, on described power transmission shaft, one end of the inner side of adjacent described rotor assembly is set with composite bearing.
Preferably, described power transmission shaft is set with combination two-lip seal, and this combination two-lip seal is located at described ball axle
Hold and composite bearing between.
Preferably, the side wall of described rotor slot is provided with oil-in and oil-out, described crescent is symmetrical and is spaced
Be provided with two, described oil-in and oil-out have been respectively communicated with a described crescent, and described oil-in and oil-out
Outlet is all connected with the external world of the described pump housing.
Preferably, the outside of described rotor assembly is provided with the cover plate for closing described rotor slot.
Preferably, described combination two-lip seal includes left sealing lip and right sealing lip, described left sealing lip and right sealing
It is provided with the oil leak groove of a loop, the diapire of described oil leak groove is provided with least one oil leaking hole between lip.
Preferably, the described pump housing is additionally provided with the oil leak in the external world being connected and leading to the described pump housing with described oil leak groove
Peep hole.
Preferably, the described pump housing is provided with relief hole, and this pressure release in the hole is provided with for selectively discharging described crescent
The pressure release valve module of interior oil pressure, described pressure release valve module includes steel ball, returning spring, screw thread stick harness and copper sheathing valve seat.
Preferably, the outer surface of described outer rotor or internal rotor is coated with tungsten carbide coating.
Compared with prior art, its advantage is the utility model：Guarantee to reduce on the premise of reaching identical requirement
Part and operation and structure complexity, reduce processing, assembly cost, reduce leakage incidence, improve pump oil and efficiency of assembling.
Brief description
Fig. 1 is the three dimensional structure diagram of the single cylinder diesel oil transfer pump according to the utility model one embodiment；
Fig. 2 is the top view of the single cylinder diesel oil transfer pump according to the utility model one embodiment；
Fig. 3 is the axial sectional view of the single cylinder diesel oil transfer pump according to the utility model one embodiment；
Fig. 4 is the broken section at pressure release valve module in single cylinder diesel oil transfer pump according to the utility model one embodiment
Figure；
Fig. 5 is the explosive view of the single cylinder diesel oil transfer pump according to the utility model one embodiment；
Fig. 6 is the three-dimensional structure combining two-lip seal in single cylinder diesel oil transfer pump according to the utility model one embodiment
Schematic diagram；
Fig. 7 is the front view combining two-lip seal in single cylinder diesel oil transfer pump according to the utility model one embodiment；
Fig. 8 is the front view of the single cylinder diesel oil transfer pump middle pump body according to the utility model one embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in further detail, of the present utility model aforementioned and other mesh
, feature, aspect and advantage will be apparent from, to make those skilled in the art can be real according to this with reference to specification word
Apply.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 5, single cylinder diesel oil transfer pump 100 includes：There is the pump housing of certain inner space
110th, driving section 120 and pressure release valve module 130, wherein, the pump housing 110 is communicatively provided with axis hole 111a and rotor slot 111b, transmission
Portion 120 includes power transmission shaft 121, ball bearing 122, combination two-lip seal 123, composite bearing 124 and rotor assembly, power transmission shaft 121
In axis hole 111a, ball bearing 122 is set in the one end away from described rotor assembly on power transmission shaft 121,124 sets of composite bearing
It is loaded on one end of the inner side of adjacent described rotor assembly on power transmission shaft 121, combination two-lip seal 123 is set on power transmission shaft 121,
And be located between ball bearing 122 and composite bearing 124, described rotor assembly in rotor slot 111b, described rotor assembly bag
Include the internal rotor 125 being set in successively from inside to outside on power transmission shaft 121 and outer rotor 126, internal rotor 125 is led to power transmission shaft 121
Cross a dismountable trundle 121a to be selectively connected, internal rotor 125 rotates, outer rotor 126 with the rotation of power transmission shaft 121
Make eccentric motion with internal rotor 125, the diapire of rotor slot 111b offers meniscate crescent 111b '.In an embodiment
In, power transmission shaft 121 is also arranged with back-up ring 121b, the outside that back-up ring 121b is attached at ball bearing 122 prevents the axle of power transmission shaft 121
To play, increase the abrasion of cover plate 127.
With reference to Fig. 4, Fig. 5 and Fig. 8, the side wall of rotor slot 111b is provided with oil-in 112 and oil-out 113, crescent
111b ' is symmetrical and compartment of terrain is provided with two, and oil-in 112 and oil-out 113 have been respectively communicated with a crescent 111b ', and enter
The outlet of hydraulic fluid port 112 and oil-out 113 is all connected with the external world of the pump housing 110.
Referring again to Fig. 5, the outside of described rotor assembly is provided with the cover plate 127 for enclosed rotor groove 111b.Real one
Apply in example, the edge of cover plate 127 is provided with 3 installing hole 127b, can be connected fixing to cover plate 127 and the pump housing 110 by bolt 127
Connect.
With reference to Fig. 6 and Fig. 7, combination two-lip seal 123 includes left sealing lip 123a and right sealing lip 123b, left sealing lip
It is provided with the oil leak groove 123c of a loop, the diapire of oil leak groove 123c is provided with least one between 123a and right sealing lip 123b
Oil leaking hole 123d, if the inwall of combination two-lip seal 123 is worn and torn with the outer wall of power transmission shaft 121, thus leading to fluid to be let out
Leak in the inwall of combination two-lip seal 123 and the little space of outer wall of power transmission shaft 121, and pass through oil leaking hole 123d and can will leak out
Enter the fluid in this little space to be discharged in oil leak groove 123c.In one embodiment, oil leaking hole 123d is provided with two.
Referring again to Fig. 4, on the pump housing 110, the side relative with cover plate 127 is provided with the integrally formed installation with the pump housing 110
Flange 111c, the pump housing 110 is additionally provided with the oil leak peep hole in the external world being connected and leading to the described pump housing with oil leak groove 123 (slightly
Draw), if the left sealing lip 123a or right sealing lip 123b of combination two-lip seal 123 occurs abrasion to lead to oil leakage, can pass through
Oil leak groove 123 collects the oil of leakage, and is flowed out by described oil leak peep hole, thus being observed by operating personnel, with convenient to operate
Personnel change combination two-lip seal 123 in time prevents power transmission shaft 121 and other associated components from wearing and tearing, and can pass through described simultaneously
Oil leak peep hole and oil leaking hole 123d, to keep the pressure within oil leak groove 123 to balance each other with external pressure, prevent pressure mistake
Big combination two-lip seal 123 is formed extrudes, damages left sealing lip 123a and right sealing lip 123b.
With reference to Fig. 4 and Fig. 5, the pump housing 110 is provided with relief hole 111d, and relief hole 111d is respectively communicated with and oil-out 113 phase
Logical crescent 111b ' and the crescent 111b ' being communicated with oil-in 112, is provided with this relief hole 111d for selectively releasing
Put the pressure release valve module 130 of the interior oil pressure of described crescent 111b '.In one embodiment, pressure release valve module 130 include steel ball 133,
Returning spring 132, screw thread stick harness 131 and copper sheathing valve seat 134, steel ball 133 is used for selective shut-off copper sheathing valve seat 134, steel ball
133 form a switch with copper sheathing valve seat 134, and copper sheathing valve seat 134 is fixed on the inside of relief hole 111d so that copper sheathing valve seat
The crescent 111b ' (high pressure chest) that 134 left side connection is communicated with oil-out 113, the right side connection of copper sheathing valve seat 134 and oil-feed
Mouthfuls 112 crescent 111b ' (low pressure chamber) communicating, when oil-out oil pressure is more than setting value, oil pressure push open steel ball 133 connect from
And the crescent 111b ' of copper sheathing valve seat 134 left and right sides is connected, that is, high pressure chest is connected with low pressure chamber, thus reducing
The oil pressure of high pressure chest, plays pressure release valve action, and when oil-out oil pressure is reduced near the critical value of setting value, steel ball 133 exists
Again by copper sheathing valve seat 134 in the presence of returning spring 132, it is more than during setting value again by copper sheathing valve up to oil-out oil pressure
Seat 134 is again turned on, and so moves in circles it is ensured that the pressure in crescent 111b ' is not higher than limit value, prevents oil pressure from exceeding bavin
Oil machine required it is ensured that safe and reliable work.
With reference to Fig. 3 and Fig. 5, in one embodiment, between cover plate 127 and the pump housing 110, it is additionally provided with O-ring seals.
In one embodiment, the outer surface of outer rotor 126 or internal rotor 125 is coated with tungsten carbide coating, can significantly drop
Low-friction coefficient, reduces noise, improves the service life of outer rotor 126 and internal rotor 125.
Operation principle：
1. when power transmission shaft 121 rotates, by power transmission shaft 121 equipped with trundle 121a drive internal rotor 125 rotate,
Internal rotor 125 drives outer rotor 126 to rotate again, and internal rotor 125 and outer rotor 126 make eccentric motion, are formed in left and right two chamber and inhale
Oil pocket and pumping cavity, fuel oil is sucked by oil sucting cavity from diesel oil tank, then fuel oil is extruded by pumping cavity, and power transmission shaft 121 is in bavin
Oil machine balance shaft drives lower constantly rotation, internal rotor 125 and outer rotor 126 constantly to export fuel oil；
2. combination two-lip seal 123 in right sealing lip 123b be used for prevent the right pump chamber in diesel oil from power transmission shaft 121 seepage,
Left sealing lip 123a is used for preventing left side pump chamber machine oil from power transmission shaft 121 seepage, if the left sealing lip of combination two-lip seal 123
123a or right sealing lip 123b occurs abrasion to lead to oil leakage, can collect the oil of leakage by oil leak groove 123, and by described leakage
Oily peep hole flows out, thus being observed by operating personnel, so that operating personnel change combination two-lip seal 123 in time and prevent from being driven
Axle 121 and other associated components are worn and torn, and can keep oil leak groove by described oil leak peep hole and oil leaking hole 123d simultaneously
Pressure within 123 and external pressure balance each other, and prevent excessive combination two-lip seal 123 is formed of pressure from extruding, damaging a left side
Sealing lip 123a and right sealing lip 123b；
3. steel ball 133 and copper sheathing valve seat 134 form a switch, and copper sheathing valve seat 134 is fixed on the inside of relief hole 111d,
The left side making copper sheathing valve seat 134 connects the crescent 111b ' (high pressure chest) communicating with oil-out 113, the right side of copper sheathing valve seat 134
Side connects the crescent 111b ' (low pressure chamber) of oil-in 112, and when oil-out oil pressure is more than setting value, oil pressure pushes steel ball 133 open
So that the crescent 111b ' of copper sheathing valve seat 134 left and right sides is connected, that is, high pressure chest is connected with low pressure chamber for connection, from
And reduce the oil pressure of high pressure chest, play pressure release valve action, and when oil-out oil pressure is reduced near the critical value of setting value, steel ball
133 in the presence of returning spring 132 again by copper sheathing valve seat 134, until oil-out oil pressure is more than during setting value general again
Copper sheathing valve seat 134 is again turned on, and so moves in circles it is ensured that the pressure in crescent 111b ' is not higher than limit value, prevents oil pressure
Exceed diesel engine required it is ensured that safe and reliable work.
Number of devices described herein and treatment scale are used to simplify explanation of the present utility model.To the utility model
Application, modifications and variations will be readily apparent to persons skilled in the art.
As described above, according to the utility model, following beneficial effect can be obtained：
1st, guarantee to reduce part and operation and structure complexity on the premise of reaching identical requirement, reduce processing, assembling
Cost, reduces leakage incidence, improves pump oil and efficiency of assembling；
2nd, finding combination two-lip seal 123 seal failure in time, thus changing to combination two-lip seal 123, preventing
Because the diesel engine that single cylinder diesel lubrication failure leads to damages；
3rd, the pressure in release crescent is so that the output pressure of oil transfer pump is not above limit value it is ensured that the peace of oil circuit
Complete and guarantee diesel engine steady operation.
Although embodiment of the present utility model is disclosed as above, it is not limited in institute in specification and embodiment
Row use, and it can be applied to various suitable fields of the present utility model completely, for those skilled in the art, can
It is easily achieved other modification, therefore under the universal being limited without departing substantially from claim and equivalency range, this practicality
New be not limited to specific details and shown here as with description legend.
Claims (10)
1. a kind of single cylinder diesel oil transfer pump is it is characterised in that include：
There is the pump housing of certain inner space, this pump housing is communicatively provided with axis hole and rotor slot；
Power transmission shaft in described axis hole；And
Rotor assembly in described rotor slot,
Wherein, described rotor assembly is set on described power transmission shaft, and described rotor assembly includes being set in successively from inside to outside institute
State the internal rotor on power transmission shaft and outer rotor, described internal rotor passes through a dismountable trundle optionally with described power transmission shaft
Connect, described internal rotor rotates with the rotation of described power transmission shaft, and described outer rotor makees eccentric motion with described internal rotor, described
The diapire of rotor slot is provided with least one pair of meniscate crescent.
2. single cylinder diesel oil transfer pump as claimed in claim 1 is it is characterised in that away from described rotor set on described power transmission shaft
One end of part is set with ball bearing.
3. single cylinder diesel oil transfer pump as claimed in claim 2 is it is characterised in that adjacent described rotor set on described power transmission shaft
One end of the inner side of part is set with composite bearing.
4. single cylinder diesel oil transfer pump as claimed in claim 3 is it is characterised in that be set with combination lips on described power transmission shaft
Oil sealing, and this combination two-lip seal is positioned between described ball bearing and composite bearing.
5. single cylinder diesel oil transfer pump as claimed in claim 1 it is characterised in that be provided with the side wall of described rotor slot into
Hydraulic fluid port and oil-out, described crescent is symmetrical and compartment of terrain is provided with two, and described oil-in and oil-out have been respectively communicated with one
Described crescent, and the outlet of described oil-in and oil-out is all connected with the external world of the described pump housing.
6. single cylinder diesel oil transfer pump as claimed in claim 1 it is characterised in that the outside of described rotor assembly be provided with for
Close the cover plate of described rotor slot.
7. single cylinder diesel oil transfer pump as claimed in claim 4 is it is characterised in that described combination two-lip seal includes left sealing
Lip and right sealing lip, are provided with the oil leak groove of a loop, the diapire of described oil leak groove between described left sealing lip and right sealing lip
It is provided with least one oil leaking hole.
8. single cylinder diesel oil transfer pump as claimed in claim 7 is it is characterised in that be additionally provided with the described pump housing and described oil leak
Groove be connected and lead to the described pump housing the external world oil leak peep hole.
9. it is characterised in that the described pump housing is provided with relief hole, this lets out single cylinder diesel oil transfer pump as claimed in claim 5
Pressure in the hole is provided with the pressure release valve module for selectively discharging oil pressure in described crescent, described pressure release valve module include steel ball,
Returning spring, screw thread stick harness and copper sheathing valve seat.
10. single cylinder diesel oil transfer pump as claimed in claim 1 is it is characterised in that the appearance of described outer rotor or internal rotor
Face is coated with tungsten carbide coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620808731.3U CN205937094U (en) | 2016-07-28 | 2016-07-28 | Single cylinder diesel petroleum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620808731.3U CN205937094U (en) | 2016-07-28 | 2016-07-28 | Single cylinder diesel petroleum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205937094U true CN205937094U (en) | 2017-02-08 |
Family
ID=57924428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620808731.3U Withdrawn - After Issue CN205937094U (en) | 2016-07-28 | 2016-07-28 | Single cylinder diesel petroleum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205937094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014966A (en) * | 2016-07-28 | 2016-10-12 | 江苏金湖输油泵有限公司 | Single-cylinder diesel engine oil delivery pump |
-
2016
- 2016-07-28 CN CN201620808731.3U patent/CN205937094U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014966A (en) * | 2016-07-28 | 2016-10-12 | 江苏金湖输油泵有限公司 | Single-cylinder diesel engine oil delivery pump |
| CN106014966B (en) * | 2016-07-28 | 2019-04-09 | 江苏金湖输油泵有限公司 | Single cylinder diesel oil transfer pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170208 Effective date of abandoning: 20190409 |
|
| AV01 | Patent right actively abandoned |