CN205823509U - A kind of injection pump diesel oil low pressure chamber oil-feed oil return one screw - Google Patents
A kind of injection pump diesel oil low pressure chamber oil-feed oil return one screw Download PDFInfo
- Publication number
- CN205823509U CN205823509U CN201620706448.XU CN201620706448U CN205823509U CN 205823509 U CN205823509 U CN 205823509U CN 201620706448 U CN201620706448 U CN 201620706448U CN 205823509 U CN205823509 U CN 205823509U
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- China
- Prior art keywords
- oil
- oil return
- screw
- feed
- low pressure
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of injection pump diesel oil low pressure chamber oil-feed oil return one screw, including screw body, oil-feed portion and oil return portion, described oil-feed portion includes oil-in, oil supply gallery and oil return opening；Described oil return portion includes drainback passage and oil return valve；Described oil return opening connects one end of described oil return valve, and the other end correspondence of institute's oil return valve connects described drainback passage；This injection pump diesel oil low pressure chamber oil-feed oil return one screw, it is arranged on the side of diesel oil low pressure chamber, and opposite side screw plug seals, and existing oil feeding function has again oil return function；This oil-feed oil return one bolt structure is simple, and functional integration is high, dependable performance；Being particularly suited for the occasion that oil return screw installing space is restricted, user, without being modified diesel low-voltage oil circuit, is conducive to developing new main frame.
Description
Technical field
This utility model belongs to injection pump part field, is specifically related to a kind of injection pump diesel oil low pressure chamber oil-feed oil return one
Body screw.
Background technology
In general, diesel injection pump diesel oil low pressure chamber is all respectively disposed with oil-feed screw and oil return screw.Oil-feed spiral shell
The function of nail is that the low pressure diesel with certain pressure that oil transfer pump conveying comes is passed to injection pump diesel oil low pressure chamber.Oil return spiral shell
Nail function be limit injection pump diesel oil low pressure chamber oil pressure within the specific limits (when in pump chamber, oil pressure exceedes threshold limit value, ball
Draining opened by valve), reduce oil pump internal hemorrhage due to trauma risk, stablize oil pump performance.At present, part injection pump diesel oil low pressure chamber is still had only to arrange
Have oil-feed screw, be primarily due to oil return screw installing space inadequate, interfere with diesel engine, can only block with screw plug or clear-cut the most not
Processing screw hole.This kind of arrangement is not reinstall whelk nail, but is modified diesel engine by Diesel Engine Plant, is arranged in
Other of low pressure oil way is local, on diesel fuel filter, to reach to limit injection pump diesel oil low pressure chamber oil pressure a range of
Effect.But this kind of mode requires that diesel low-voltage oil circuit is modified by user, it is unfavorable for developing new main frame.
Utility model content
The purpose of this utility model is to provide a kind of novel structure, the injection pump diesel oil low pressure chamber oil-feed oil return of practical function
Integrally screw.
Technical scheme provided by the utility model is: a kind of injection pump diesel oil low pressure chamber oil-feed oil return one screw, bag
Including screw body, oil-feed portion and oil return portion, described oil-feed portion includes oil-in, oil supply gallery and oil return opening；Described oil return portion wraps
Include drainback passage and oil return valve；Described oil return opening connects one end of described oil return valve, and the other end correspondence of institute's oil return valve connects institute
State drainback passage.
As a kind of improvement of the present utility model, described screw body, oil-feed portion and oil return portion are one-body molded.
As a kind of improvement of the present utility model, also include the first sealing and connecting device and the second sealing and connecting device, institute
Stating screw body and connect described oil return portion by the first sealing and connecting device, described oil return portion is by the second sealing and connecting device even
Meet described oil-feed portion.
As a kind of improvement of the present utility model, described oil return valve is spring reset ball valve.
This injection pump diesel oil low pressure chamber oil-feed oil return one screw of the application, it is arranged on the one of diesel oil low pressure chamber
Side, opposite side screw plug seals, and existing oil feeding function has again oil return function.
Beneficial effect:
This oil-feed oil return one bolt structure is simple, and functional integration is high, dependable performance.It is particularly suited for oil return screw peace
The occasion that dress space is restricted, user, without being modified diesel low-voltage oil circuit, is conducive to developing new main frame.
Accompanying drawing explanation
Fig. 1 is this utility model one injection pump diesel oil low pressure chamber oil-feed oil return one bolt structure schematic diagram.
In figure, 1 is screw body, 2 be oil-feed portion, 21 be oil-in, 22 be oil supply gallery, 23 for oil return opening, 3 is oil return
Portion, 31 be drainback passage, 32 for oil return valve, 4 is the first sealing and connecting device, and 5 is the second sealing and connecting device.
Fig. 2 is this utility model one injection pump diesel oil low pressure chamber oil-feed oil return one screw assembling schematic diagram.
In figure, 7 is injection pump diesel oil low pressure chamber oil-feed oil return one screw, and 8 is diesel oil low pressure chamber, and 9 is screw plug.
Detailed description of the invention
Further illustrate embodiment of the present utility model below in conjunction with the accompanying drawings.
As shown in Figure 1, the injection pump diesel oil low pressure chamber oil-feed oil return one screw in the present embodiment, including screw body
1, oil-feed portion 2 and oil return portion 3, described oil-feed portion 2 includes oil-in 21, oil supply gallery 22 and oil return opening 23；Described oil return portion 3 wraps
Include drainback passage 31 and oil return valve 32；Described oil return opening 23 connects one end of described oil return valve 32, the other end of institute's oil return valve 32
The described drainback passage 31 of corresponding connection.
Oil return valve in the present embodiment uses spring reset ball valve, and also arranges the first sealing and connecting device 4 and second
Sealing and connecting device 5, described screw body 1 connects described oil return portion 3 by the first sealing and connecting device 4, and described oil return portion 3 leads to
Crossing the second sealing and connecting device 5 and connect described oil-feed portion 2, in the present embodiment, the first sealing and connecting device 4 and second is tightly connected
Device 5 uses internal and external threads to connect to add combination sealing packing ring again and make each position be tightly connected.
As shown in Figure 2, this injection pump diesel oil low pressure chamber oil-feed oil return one screw 7 of the application, it is arranged on bavin
The side of oil low pressure chamber 8, opposite side screw plug 9 seals, and existing oil feeding function has again oil return function.This oil-feed oil return one screw
Be structurally characterized in that: 1, simple in construction, compact.Oil-feed screw and oil return screw are integrated；2, this oil-feed oil return one spiral shell
The screw terminal that nail can be regarded as at oil return screw increases by one section of oil-feed threeway.Oil connection is put into, by six square ends by screw terminal
Reinstalling oil connection, centre combination sealing packing ring separates.The advantage of this oil-feed oil return one screw is: simple in construction, function
Integrated level is high, dependable performance.Being particularly suited for the occasion that oil return screw installing space is restricted, user is without low to diesel engine
Force feed road is modified, and is conducive to developing new main frame.
This utility model is not limited to above-mentioned detailed description of the invention, and those skilled in the art also can make multiple change accordingly
Change, but any be equal to this utility model or similar change all should be contained in the range of this utility model claim.
Claims (4)
1. an injection pump diesel oil low pressure chamber oil-feed oil return one screw, it is characterised in that include screw body, oil-feed portion and return
Oil portion, described oil-feed portion includes oil-in, oil supply gallery and oil return opening；Described oil return portion includes drainback passage and oil return valve；Institute
Stating oil return opening and connect one end of described oil return valve, the other end correspondence of institute's oil return valve connects described drainback passage.
2. injection pump diesel oil low pressure chamber oil-feed oil return one screw as claimed in claim 1, it is characterised in that described screw is originally
Body, oil-feed portion and oil return portion are one-body molded.
3. injection pump diesel oil low pressure chamber oil-feed oil return one screw as claimed in claim 1, it is characterised in that also include first
Sealing and connecting device and the second sealing and connecting device, described screw body connects described oil return by the first sealing and connecting device
Portion, described oil return portion connects described oil-feed portion by the second sealing and connecting device.
4. the injection pump diesel oil low pressure chamber oil-feed oil return one screw as described in any one in claims 1 to 3, its feature exists
In, described oil return valve is spring reset ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620706448.XU CN205823509U (en) | 2016-07-06 | 2016-07-06 | A kind of injection pump diesel oil low pressure chamber oil-feed oil return one screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620706448.XU CN205823509U (en) | 2016-07-06 | 2016-07-06 | A kind of injection pump diesel oil low pressure chamber oil-feed oil return one screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205823509U true CN205823509U (en) | 2016-12-21 |
Family
ID=57564786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620706448.XU Expired - Fee Related CN205823509U (en) | 2016-07-06 | 2016-07-06 | A kind of injection pump diesel oil low pressure chamber oil-feed oil return one screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205823509U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523228A (en) * | 2016-12-31 | 2017-03-22 | 南岳电控（衡阳）工业技术股份有限公司 | Fuel-injection electronic unit pump for low-power diesel generator |
| CN107387281A (en) * | 2017-07-31 | 2017-11-24 | 成都威特电喷有限责任公司 | Diesel common rail oil pump enters oil outlet one-way valve |
-
2016
- 2016-07-06 CN CN201620706448.XU patent/CN205823509U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523228A (en) * | 2016-12-31 | 2017-03-22 | 南岳电控（衡阳）工业技术股份有限公司 | Fuel-injection electronic unit pump for low-power diesel generator |
| CN107387281A (en) * | 2017-07-31 | 2017-11-24 | 成都威特电喷有限责任公司 | Diesel common rail oil pump enters oil outlet one-way valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161221 Termination date: 20180706 |