CN209293947U - A kind of diesel engine twin-tub injection pump - Google Patents
A kind of diesel engine twin-tub injection pump Download PDFInfo
- Publication number
- CN209293947U CN209293947U CN201821948524.3U CN201821948524U CN209293947U CN 209293947 U CN209293947 U CN 209293947U CN 201821948524 U CN201821948524 U CN 201821948524U CN 209293947 U CN209293947 U CN 209293947U
- Authority
- CN
- China
- Prior art keywords
- plunger
- pump housing
- mounting hole
- hole
- diesel engine
- 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.)
- Active
Links
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a kind of diesel engine twin-tub injection pumps, including the pump housing, the middle part of the pump housing is equipped with plunger matching parts, side is formed with oil inlet and oil return hole, the plunger matching parts includes plunger bushing, the top of the pump housing is equipped with mounting surface, and the outer wall upper end of the plunger bushing is equipped with convex shoulder, is fixedly connected between the mounting surface and convex shoulder by threaded fastener；Mounting hole is provided in the middle part of the plunger bushing, the mounting hole is coaxially arranged stepped hole, it is the second mounting hole positioned at the first mounting hole of lower part and positioned at the first mounting hole top respectively, plunger engaged therewith is installed in first mounting hole, is fixedly connected with delivery valve holder component in second mounting hole.Plunger matching parts is connect rigid good with delivery valve holder component in the utility model injection pump, can bear higher pump end pressure, it is not easy to be leaked, diameter of plunger increases, and cam lift increases, and can satisfy high-power high-lift unit requirement.
Description
Technical field
The utility model discloses a kind of diesel engine twin-tub injection pumps, belong to diesel engine realm.
Background technique
Existing twin cylinder pump is largely using traditional plunger mounting structure, plunger matching parts and pump housing mounting surface contact area at present
It is small, it is easy to cause plunger matching parts stuck, delivery valve holder component is connect with the pump housing, and plunger matching parts passes through with delivery valve holder component
Gasket compresses, and pump housing poor rigidity, and when pump end pressure increases, there are larger oil leak risks.In identical pump body structure lower limit
Diameter of plunger and cam lift have been made, high-power high-lift unit requirement has been unable to satisfy, is also unable to satisfy performance in terms of intensity
It is required that.
Utility model content
In view of the above technical problems, the utility model discloses a kind of diesel engine twin-tub injection pump, plunger in the injection pump
It is rigid good that couple is connect with delivery valve holder component, can bear higher pump end pressure, it is not easy to leak, diameter of plunger increases, convex
It takes turns lift to increase, can satisfy high-power high-lift unit requirement.Guarantee that structure is simple simultaneously, at low cost, pump assembly reliability
It is high.
In order to achieve the above technical purposes, the utility model adopts the following technical solution:
A kind of diesel engine twin-tub injection pump, including the pump housing, the middle part of the pump housing are equipped with plunger matching parts, and side is formed with into returning
Oilhole, the plunger matching parts include plunger bushing, and the top of the pump housing is equipped with mounting surface, and the outer wall upper end of the plunger bushing is equipped with
Convex shoulder is fixedly connected between the mounting surface and convex shoulder by threaded fastener；
Mounting hole is provided in the middle part of the plunger bushing, it is to be located at lower part respectively that the mounting hole, which is coaxially arranged stepped hole,
The first mounting hole and the second mounting hole positioned at the first mounting hole top, installation column engaged therewith in first mounting hole
It fills in, is fixedly connected with delivery valve holder component in second mounting hole.
The diameter of the plunger is 8mm.
The connection of pump housing inner plunger bottom pumps intracorporal tappet body component, tappet body component and the intracorporal cam of diesel engine
Contact, and tappet body component is converted by camshaft rotary motion and is moved up and down, connection plunger matching parts pumps,
The cam lift is 9mm.
It is symmetrically arranged with four threaded holes on the mounting surface on the pump housing top, is correspondingly provided with four on the convex shoulder of the plunger bushing
A threaded hole is fastened by bolts part between the convex shoulder of plunger bushing and the mounting surface on pump housing top and is fixedly connected.
Seal washer is equipped between the convex shoulder of the plunger bushing and the mounting surface of pump housing upper end.
It is located at being partially installed in the pump housing below convex shoulder on the plunger bushing, it is axially flat along plunger bushing on plunger bushing outer wall
Row is set there are two annular groove, and two annular grooves are provided with sealing ring, pack into pump housing fuel feed hole, the pump housing and plunger, oil return
Seal chamber is formed between hole, to guarantee that diesel oil can fully enter plunger from fuel feed hole through the pump housing and plunger bushing oil inlet and oil return hole
It is interior.
The utility model has the advantages that
The first, the plunger matching parts plunger bushing outer wall of the utility model diesel engine twin-tub injection pump and pump body mounting hole
Contact area increases, and is not easy between plunger matching parts and the pump housing stuck.
The second, the mounting hole in the middle part of delivery valve matching parts and plunger bushing is directly connected to, and rigidity is big, can bear higher pump side pressure
Power, it is not easy to reveal.
Third, the utility model diameter of plunger are 8mm, and enlarged diameter meets more significant power demand.
4th, the utility model cam lift is 9mm, and cam lift increases, and can increase pump end pressure, power can reach
22KW, so as to meet high-power unit requirement.
5th, the utility model structure is simple, pump assembly high reliablity.
Detailed description of the invention
Fig. 1 is the general assembly drawing of the utility model diesel engine twin-tub injection pump；
Wherein, 1 is the pump housing；2 be plunger bushing；3 be plunger；4 be delivery valve holder component；D is diameter of plunger；L is cam
Lift；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the structural schematic diagram of plunger matching parts；
Fig. 4 is the structural schematic diagram of plunger bushing；
Wherein 2-1 is the first mounting hole；2-2 is the second mounting hole.
Specific embodiment
With reference to the accompanying drawings of the specification and specific embodiment is to the technical side of the utility model diesel engine twin-tub injection pump
Case is described in further detail.
As shown in Fig. 1 ~ 3, a kind of diesel engine twin-tub injection pump of the utility model, including the pump housing 1, the middle part of the pump housing 1
Equipped with plunger matching parts, side is formed with oil inlet and oil return hole, and the plunger matching parts includes plunger bushing 2, and the top of the pump housing 1 is equipped with installation
The outer wall upper end in face, the plunger bushing 2 is equipped with convex shoulder, is fixedly connected between the mounting surface and convex shoulder by threaded fastener；
Mounting hole is provided in the middle part of the plunger bushing 2, it is to be located at lower part respectively that the mounting hole, which is coaxially arranged stepped hole,
The first mounting hole 2-1 and positioned at the first top mounting hole 2-1 the second mounting hole 2-2, the first mounting hole 2-1 in installation
Plunger 3 engaged therewith is fixedly connected with delivery valve holder component 4 in the second mounting hole 2-2.
As the further preferred embodiments of technical solutions of the utility model, the diameter of the plunger is 8mm, enlarged diameter
Meet more significant power demand.
As the further preferred embodiments of technical solutions of the utility model, pump housing inner plunger bottom is connected in the pump housing
Tappet body component, tappet body component and the intracorporal cam contact of diesel engine, and tappet is converted by camshaft rotary motion
Body component moves up and down, and connection plunger matching parts pumps, and the cam lift is 9mm, and cam lift increases, can be with
Increase pump end pressure, power can reach 22KW, so as to meet high-power unit requirement.
As the further preferred embodiments of technical solutions of the utility model, symmetrically set on the mounting surface on the pump housing top
There are four threaded hole, four threaded holes, the convex shoulder of plunger bushing and the peace on pump housing top are correspondingly provided on the convex shoulder of the plunger bushing
It is fastened by bolts part between dress face to be fixedly connected, pump assembly high reliablity.
It in order to guarantee leakproofness, is mounted in the pump housing below the convex shoulder of the plunger bushing, plunger bushing outer wall sets that there are two recessed
Slot is equipped with sealing ring, makes to form seal chamber between pump housing fuel feed hole, the pump housing and plunger bushing oil inlet and oil return hole, to guarantee that diesel oil can be with
It is fully entered in plunger from fuel feed hole through the pump housing and plunger bushing oil inlet and oil return hole.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions.By sentence " element limited including one ..., it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element ".
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. the middle part of a kind of diesel engine twin-tub injection pump, including the pump housing, the pump housing is equipped with plunger matching parts, side is formed with oil inlet and oil return
Hole, the plunger matching parts include plunger bushing, it is characterised in that: the top of the pump housing is equipped with mounting surface, the plunger bushing it is outer
Wall upper end is equipped with convex shoulder, is fixedly connected between the mounting surface and convex shoulder by threaded fastener；
Mounting hole is provided in the middle part of the plunger bushing, the mounting hole is coaxially arranged stepped hole, is positioned at the of lower part respectively
One mounting hole and the second mounting hole positioned at the first mounting hole top, installation plunger engaged therewith in first mounting hole,
Delivery valve holder component is fixedly connected in second mounting hole.
2. diesel engine twin-tub injection pump according to claim 1, which is characterized in that the diameter of the plunger is 8mm.
3. diesel engine twin-tub injection pump according to claim 1, which is characterized in that pump housing inner plunger bottom connection pump
Intracorporal tappet body component, tappet body component and the intracorporal cam contact of diesel engine, and be converted by camshaft rotary motion
Tappet body component moves up and down, and connection plunger matching parts pumps, and the cam lift is 9mm.
4. diesel engine twin-tub injection pump according to claim 1, which is characterized in that right on the mounting surface on the pump housing top
Title is set there are four threaded hole, is correspondingly provided with four threaded holes, the convex shoulder of plunger bushing and pump housing top on the convex shoulder of the plunger bushing
Mounting surface between be fastened by bolts part and be fixedly connected.
5. diesel engine twin-tub injection pump according to claim 1, which is characterized in that on the convex shoulder and the pump housing of the plunger bushing
Seal washer is equipped between the mounting surface at end.
6. diesel engine twin-tub injection pump according to claim 1, which is characterized in that be located at below convex shoulder on the plunger bushing
Be partially installed in the pump housing, axially set in parallel there are two annular groove on plunger bushing outer wall along plunger bushing, two annular grooves
It is provided with sealing ring, pump housing fuel feed hole, the pump housing and plunger is made to pack into, form seal chamber between oil return hole, to guarantee that diesel oil can
To be fully entered in plunger from fuel feed hole through the pump housing and plunger bushing oil inlet and oil return hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821948524.3U CN209293947U (en) | 2018-11-23 | 2018-11-23 | A kind of diesel engine twin-tub injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821948524.3U CN209293947U (en) | 2018-11-23 | 2018-11-23 | A kind of diesel engine twin-tub injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209293947U true CN209293947U (en) | 2019-08-23 |
Family
ID=67644069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821948524.3U Active CN209293947U (en) | 2018-11-23 | 2018-11-23 | A kind of diesel engine twin-tub injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209293947U (en) |
-
2018
- 2018-11-23 CN CN201821948524.3U patent/CN209293947U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105508107A (en) | Integrated high-pressure oil pump assembly for high-pressure common-rail fuel injection system of diesel engine | |
| CN105134440B (en) | Use for diesel engine improves the high-pressure fuel injection pump assembly of structure single cylinder | |
| CN110748446A (en) | Common rail high-pressure oil inlet and outlet valve assembly and common rail high-pressure oil supply pump | |
| CN209293947U (en) | A kind of diesel engine twin-tub injection pump | |
| CN102536568A (en) | In-line diaphragm-type pressurizing pump for dimethyl-ether engine | |
| CN103994000A (en) | Single-cylinder high-pressure oil pump used for diesel engine | |
| CN104329198A (en) | In-line common rail fuel feed pump capable of controlling low-pressure fuel inlet amount | |
| CN208441950U (en) | Common rail fuel combustion system | |
| CN206084315U (en) | Use pressure equipment big valve gap to sheathed tube assembly devices of valve base as benchmark | |
| CN212563501U (en) | Plunger type hand oil pump without return spring for automobile diesel oil filter | |
| CN211819756U (en) | Oil pumping unit for high-pressure common rail system | |
| CN204921227U (en) | Diesel engine is with improving structure single cylinder high -pressure oil pump assembly | |
| CN203570449U (en) | High-pressure oil spraying type sealing piston | |
| CN201059233Y (en) | Injector fuel oil returning structure | |
| CN202266408U (en) | Diesel engine oil injector test bed high-pressure pump | |
| CN216381673U (en) | High-rail-pressure large-flow pump oil system | |
| CN109026385B (en) | Mounting structure of engine cylinder drain valve | |
| CN204175489U (en) | A kind of in-line arrangement co-rail fuel feed pump controlling low pressure oil-feed | |
| CN205714521U (en) | Combined mechanical oil spout-supercharging piezoelectricity jet hybrid fuel jet device | |
| CN213776462U (en) | Oil inlet and outlet valve with double-ball sealing mechanism | |
| CN203651460U (en) | Fuel tank cover plate assembly | |
| CN205478041U (en) | Electrically controlled monoblock pump | |
| CN221423612U (en) | Electric hydraulic push rod | |
| CN110792541A (en) | Seepage-proofing plunger coupling part | |
| CN213807908U (en) | Plunger and barrel assembly for improving oil supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |