CN207609495U - A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure - Google Patents
A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure Download PDFInfo
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- CN207609495U CN207609495U CN201721827536.6U CN201721827536U CN207609495U CN 207609495 U CN207609495 U CN 207609495U CN 201721827536 U CN201721827536 U CN 201721827536U CN 207609495 U CN207609495 U CN 207609495U
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- leakage energy
- fuel
- oil return
- pump housing
- plunger
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Abstract
A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure disclosed by the utility model, seat, hold out body component and fuel-displaced valve member under plunger bushing, plunger, fuel-flow control pull rod, plunger spring, plunger spring including the pump housing and in the pump housing, wherein the delivery connection on fuel-displaced valve body is connect by a union nut with high-pressure oil pipe；It offers the first Leakage Energy oil return hole in fuel-displaced valve body, Leakage Energy drainback passage is provided between fuel-displaced valve body and plunger bushing, the second Leakage Energy oil return hole is provided in plunger bushing, a Leakage Energy oil return ring cavity is provided between plunger bushing and the pump housing, the Leakage Energy oil back chamber of third Leakage Energy oil return hole zero back pressure is set in the pump housing, the oil leak between delivery connection and union nut and high-pressure oil pipe on fuel-displaced valve body passes through the first Leakage Energy oil return hole, Leakage Energy drainback passage, second Leakage Energy oil return hole, Leakage Energy oil return ring cavity, third Leakage Energy oil return hole is flow back into the Leakage Energy oil back chamber of zero back pressure.
Description
Technical field
The utility model is related to a kind of high-power, high injection pressure heavy monoblock pump peculiar to vessel, more particularly to one kind has
The heavy monoblock pump peculiar to vessel of anti-outer dripping structure.
Background technology
High-power monoblock pump (single cylinder nominal power is 215KW, diameter of plunger 22mm) peculiar to vessel at present, in rated engine speed
500rpm, the jet blower end pressure under excess load operating mode reach 1500Bar, if thus not taking specific anti-outer dripping structure, monomer
When pump work process high pressure fuel can by high-pressure oil pipe in high-power monoblock pump peculiar to vessel fuel-displaced valve member connection place and go out
Fuel tap component is in attachment bolt with plunger bushing faying face and the tool that past can be leaked out in the case of loosening, and leak to the outside occurs
Having the fuel oil of pressure to be ejected on the exhaust pipe of engine (it is 300~500 C to start exhaust pipe normal working temperature) can fire
It burns and even explodes, there are great security risks.
Utility model content
The purpose of this utility model is solved present in existing high-power, high injection pressure the monoblock pump course of work
Fuel oil leaks out existing security risk, provides a kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure.
In order to realize the purpose of this utility model, technical solution is as follows used by the utility model：
A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure, including the pump housing and the plunger in the pump housing
Seat, hold out body component and fuel-displaced valve member under set, plunger, fuel-flow control pull rod, plunger spring, plunger spring, wherein it is described go out
Fuel-displaced valve body in fuel tap component is mounted on the pump housing and is connect with the plunger bushing by fastening bolt, on the fuel-displaced valve body
Delivery connection connect with high-pressure oil pipe by a union nut, 60 in the delivery connection ° conical surface linear contact inner collar
It is in sealing contact with 60 ° of conical surface linear contact external toroidal rings on the high-pressure oil pipe, which is characterized in that be opened in the fuel-displaced valve body
Equipped with one first Leakage Energy oil return hole, a Leakage Energy drainback passage is provided between the fuel-displaced valve body and the plunger bushing,
It is provided with one second Leakage Energy oil return hole in the plunger bushing, a leakage is provided between the plunger bushing and the pump housing
Oily oil return ring cavity is provided with a third Leakage Energy oil return hole and the Leakage Energy oil back chamber of a zero back pressure in the pump housing, described
The oil leak between delivery connection and union nut and high-pressure oil pipe on fuel-displaced valve body by the first Leakage Energy oil return hole, let out
Oil leak drainback passage, the second Leakage Energy oil return hole, Leakage Energy oil return ring cavity, third Leakage Energy oil return hole flow back into letting out for zero back pressure
In oil leak oil back chamber；Leakage Energy in the Leakage Energy oil back chamber of the zero back pressure is connect by the Leakage Energy on the pump housing
Head and Leakage Energy oil return pipe flow back to fuel tank.
In a preferred embodiment of the utility model, it is close between the plunger bushing and the pump housing to be provided with first
Seal and the second sealing ring, first sealing ring and the second sealing ring are located at the upper and lower both sides of the Leakage Energy oil return ring cavity.
In a preferred embodiment of the utility model, end face is provided between the fuel-displaced valve body and the pump housing
Sealing element.
As a result of technical solution as above, the utility model effective solution adds greatly work because of oil pump injection pressure
Engine high-frequency vibration during work, between the delivery connection in union nut and fuel-displaced valve member in high-pressure oil pipe because
Oil leakage phenomenon caused by loosening.
Description of the drawings
Fig. 1 is the structural schematic diagram for the heavy monoblock pump peculiar to vessel that the utility model has anti-outer dripping structure.
Fig. 2 is enlarged diagram at the I of Fig. 1.
Fig. 3 is the C-C sectional views of Fig. 1.
Fig. 4 is the partial view of the B-B sectional views of Fig. 1.
Fig. 5 is the structural schematic diagram of the high-pressure oil pipe of the utility model.
Specific implementation mode
Referring to Fig. 1 to Fig. 5, a kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure shown in figure, including 1 He of the pump housing
Seat 12, body of holding out under plunger bushing 2, plunger 3, fuel-flow control pull rod 10, plunger spring 11, plunger spring in the pump housing 1
Component 13 and fuel-displaced valve member.
Plunger 3 is assemblied in the plunger cavity of plunger bushing 2, and 3 lower end of plunger is cased with fuel-flow control pull rod 10,2 lower section of plunger bushing
It is sequentially arranged with seat 12 under plunger spring 11, plunger spring, body component 13 of holding out.
Fuel-displaced valve body 4 in fuel-displaced valve member is mounted on the pump housing 1 and is connect with plunger bushing 2 by fastening bolt 9, fuel-displaced
Delivery connection 4a on valve body 4 is connect by a union nut 15 with high-pressure oil pipe 16, on the oil outlet 4d in delivery connection 4a
60 ° of conical surface linear contact inner collar 4b and 60 ° of conical surface linear contact external toroidal ring 16a on high-pressure oil pipe 16 it is in sealing contact.
Since oil pump injection pressure adds greatly engine high-frequency vibration in the course of work, there is the latent of loosening in union nut 15
In failure.After union nut 15 loosens, on the 60 ° of conical surface linear contact inner collar 4b and high-pressure oil pipe 16 in delivery connection 4a
60 ° of conical surface linear contact external toroidal ring 16a seal failures.High pressure fuel can be by between union nut 15 and delivery connection 4a
Connection screw thread leaks out, to solve by the connection screw thread between union nut 15 and delivery connection 4a to exist because of high pressure fuel
It is loosened present in the monoblock pump course of work and causes the incipient fault that high pressure fuel leaks out, the utility model is in fuel-displaced valve body
The first Leakage Energy oil return hole 4c that an a diameter of 3mm is offered in 4, is provided with a leakage between fuel-displaced valve body 4 and plunger bushing 2
Oily drainback passage 17 is provided with one second Leakage Energy oil return hole 2a in plunger bushing 2, is provided between plunger bushing 2 and the pump housing 1
One Leakage Energy oil return ring cavity 18 is provided with the Leakage Energy oil return of a third Leakage Energy oil return hole 19 and a zero back pressure in the pump housing 1
Chamber 20, in this way the delivery connection 4a on fuel-displaced valve body 4 and the oil leak between union nut 15 and high-pressure oil pipe 16 are let out by first
Oil leak oil return hole 4c, Leakage Energy drainback passage 17, the second Leakage Energy oil return hole 2a, Leakage Energy oil return ring cavity 18, third Leakage Energy
Oil return hole 19 is flow back into the Leakage Energy oil back chamber 20 of zero back pressure；Leakage Energy in the Leakage Energy oil back chamber 20 of zero back pressure passes through peace
Leakage Energy connector (not shown) and Leakage Energy oil return pipe (not shown) on the pump housing 1 flow back to fuel tank (in figure not
It shows).
Fuel oil in the fit clearance between plunger bushing 2 and the pump housing 1 by leaking in order to prevent, between plunger bushing 2 and the pump housing 1
It is provided with the first sealing ring 14 and the second sealing ring 21, the first sealing ring 14 and the second sealing ring 21 are located at Leakage Energy oil return ring cavity
18 upper and lower both sides.The first sealing ring 14 is also also located at the lower section of the fuel chamber 22 between plunger bushing 2 and the pump housing 1 simultaneously.Fuel oil
Chamber 22 by plunger bushing 2 into, oil return hole 2b, 2c be connected to the high-voltage oil cavity 23 at 3 top of plunger.Simultaneously fuel chamber 22 also with
The return flow oil chamber 24 being arranged in the pump housing 1 is connected to fuel oil oil suction chamber 25.
For the fuel oil leakage in fuel chamber 22, edge face sealing member 14 is provided between fuel-displaced valve body 2 and the pump housing 1.
Plunger 3 is under plunger spring 11 and plunger spring under the action of seat 12, and body component 13 moves downwardly together with holding out,
Fuel oil in fuel chamber 22 by plunger bushing 2 into, the high-voltage oil cavity 23 at oil return hole 2b, 2c and plunger 3 top.Oil spout
When, plunger 3 moves up under the driving for body component 13 of holding out, and the fuel oil in high-voltage oil cavity 23 is compressed, when in high-voltage oil cavity 23
Fuel oil pressure be more than oil outlet valve spring 5 in fuel-displaced valve member elastic force after, delivery valve 8 is opened, in high-voltage oil cavity 23 absolutely
Most of high pressure fuel is by nozzle opening 2d, delivery valve 8, oil outlet valve spring 5 and the setting on plunger bushing 2 in fuel-displaced valve body 4
Interior oil discharge passage 4e and oil outlet 4d is sprayed into high-pressure oil pipe 16, then sprays into engine by high-pressure oil pipe 16 to fuel injector
Fuel chamber acting generate power.
After the fuel pressure in high-pressure oil pipe 16 is more than the elastic force of draining valve spring 7, gate gurgle valve 6 is opened, high pressure oil
Fuel oil in pipe 16 passes through oil outlet 4d, drain path 4f, gate gurgle valve 6, draining valve spring 7 and the plunger in fuel-displaced valve body 4
Oil leak hole 2e on set 2 is flow back into high-voltage oil cavity 23.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these changes and improvements are both fallen within the scope of claimed invention.The requires of the utility model is protected
Shield range is defined by the appending claims and its equivalent thereof.
Claims (3)
1. a kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure, including the pump housing and plunger bushing in the pump housing,
Seat, hold out body component and fuel-displaced valve member under plunger, fuel-flow control pull rod, plunger spring, plunger spring, wherein the delivery valve
Fuel-displaced valve body in component is mounted on the pump housing and is connect with the plunger bushing by fastening bolt, going out on the fuel-displaced valve body
Oily connector is connect by a union nut with high-pressure oil pipe, 60 in the delivery connection ° conical surface linear contact inner collar and institute
The 60 ° of conical surface linear contact external toroidal rings stated on high-pressure oil pipe are in sealing contact, which is characterized in that are offered in the fuel-displaced valve body
One first Leakage Energy oil return hole is provided with a Leakage Energy drainback passage, in institute between the fuel-displaced valve body and the plunger bushing
It states and is provided with one second Leakage Energy oil return hole in plunger bushing, a Leakage Energy is provided between the plunger bushing and the pump housing and is returned
Oil ring chamber is provided with a third Leakage Energy oil return hole and the Leakage Energy oil back chamber of a zero back pressure in the pump housing, described fuel-displaced
The oil leak between delivery connection and union nut and high-pressure oil pipe on valve body passes through the first Leakage Energy oil return hole, Leakage Energy
Drainback passage, the second Leakage Energy oil return hole, Leakage Energy oil return ring cavity, third Leakage Energy oil return hole flow back into the Leakage Energy of zero back pressure
In oil back chamber；Leakage Energy in the Leakage Energy oil back chamber of the zero back pressure by Leakage Energy connector on the pump housing and
Leakage Energy oil return pipe flows back to fuel tank.
2. a kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure as described in claim 1, which is characterized in that in the column
The first sealing ring and the second sealing ring are provided between plug sleeve and the pump housing, first sealing ring and the second sealing ring are located at
The upper and lower both sides of the Leakage Energy oil return ring cavity.
3. a kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure as described in claim 1, which is characterized in that it is described go out
It is provided with edge face sealing member between fuel tap body and the pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721827536.6U CN207609495U (en) | 2017-12-25 | 2017-12-25 | A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721827536.6U CN207609495U (en) | 2017-12-25 | 2017-12-25 | A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207609495U true CN207609495U (en) | 2018-07-13 |
Family
ID=62799738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721827536.6U Active CN207609495U (en) | 2017-12-25 | 2017-12-25 | A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207609495U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905930A (en) * | 2017-12-25 | 2018-04-13 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure |
-
2017
- 2017-12-25 CN CN201721827536.6U patent/CN207609495U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905930A (en) * | 2017-12-25 | 2018-04-13 | 南岳电控（衡阳）工业技术股份有限公司 | A kind of heavy monoblock pump peculiar to vessel with anti-outer dripping structure |
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