CN201521408U - Multifunctional stepless variable-flow high-pressure oil supply pump used for diesel engine - Google Patents
Multifunctional stepless variable-flow high-pressure oil supply pump used for diesel engine Download PDFInfo
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- CN201521408U CN201521408U CN2009201278057U CN200920127805U CN201521408U CN 201521408 U CN201521408 U CN 201521408U CN 2009201278057 U CN2009201278057 U CN 2009201278057U CN 200920127805 U CN200920127805 U CN 200920127805U CN 201521408 U CN201521408 U CN 201521408U
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Abstract
The utility model discloses a multifunctional stepless variable-flow high-pressure oil supply pump used for a diesel engine. The basic structure of the oil supply pump is an inclined disc rotation-type axial plunger pump and can realize the forming of high-voltage oil. The oil supply pump comprises a pump body, a cylinder body, an upper body, the inclined disc driven by a transmission shaft, and plungers distributed on the circumference of the inclined disc; a variable-flow oil outlet valve, a pressure and flow regulating device and an emergency stop device are further arranged on the oil supply pump to realize the remote control, stepless variable flow, pressure regulation, high safety, reliability and other functions of the high-pressure oil supply pump, therefore, the problems that stepless variable flow, stepless pressure regulation and remote control cannot be realized in the prior art are solved.
Description
Technical field
The utility model belongs to Diesel Engine Technique Field, is specifically related to the multifunctional stepless variable-flow high-pressure oil pump, mainly is applicable to the intelligent marine diesel engine of high-power low-speed, can also be applied to fields such as large-scale engineering machinery, mining machinery, building, ocean engineering.
Background technique
Along with high-power novel ship, engineering machinery, mining machinery, ocean engineering equipment etc. develop towards intelligent, automation direction, require to have functions such as Remote, stepless variable-flow, stepless voltage regulation, high security and reliability for its Hydrauservo System provides the oil feed pump of high pressure oil.The cam-type axial piston pump that oil feed pump in the market generally adopts cylinder body to rotate, manual mode is adopted in the adjusting of its pressure and flow, can not realize automatically controlled or remote control.In order to reach the purpose of regulating flow and pressure, design has manual adjustment mechanism simultaneously, and its structure is comparatively complicated.
Summary of the invention
The purpose of this utility model is to provide a kind of use for diesel engine multifunctional stepless variable-flow high-pressure oil feed pump at the deficiency of prior art existence, to solve the problem that can not carry out stepless variable-flow, stepless voltage regulation and remote control that prior art exists.
The technical solution adopted in the utility model is as follows:
A kind of use for diesel engine multifunctional stepless variable-flow high-pressure oil feed pump, its basic structure is swash plate rotary type axial piston pump, the swash plate that includes the pump housing, cylinder body, upper body, drives by transmission shaft and on swash plate the plunger of circle distribution, on described oil feed pump, also be provided with changeable flow outlet valve, pressure flow controlling device.
Described changeable flow outlet valve is arranged on the oil outlet top of plunger, and the oil outlet place correspondence of each plunger is provided with one, comprises valve body and is arranged on valve body interior outlet valve part and oiling valve part; Wherein outlet valve partly is to set gradually outlet valve steel ball, oil outlet valve spring and outlet valve bullet seat between its oil inlet and outlet; Described oiling valve partly is to set gradually control piston, oiling valve steel ball, oiling valve spring and oiling valve spring seat and constitute between its oil inlet and outlet; The oil outlet of the filler opening of outlet valve part and oiling valve part is designed to same oil circuit and links to each other with the plunger oil outlet, and the oil outlet of each outlet valve part is connected together by annular groove and links to each other with the oil outlet of oil feed pump; The filler opening of oiling valve part is arranged on the middle part and links to each other with the low pressure oil suction chamber of oil feed pump, and control piston top is connected with the control oil from the pressure flow controlling device; The filler opening of oiling valve part links to each other with the low pressure oil suction chamber of oil feed pump.
Described pressure flow controlling device includes the pump cover that is fixed on the oil feed pump upper body and first valve body, pressure flow control valve, pilot pressure bleeder valve, safety valve and the filter that are arranged on the pump cover and forms; Pressure flow control valve and safety valve are arranged in the valve body, all adopt the needle valve structure; Pilot pressure bleeder valve and filter are arranged in the pump cover; Described oil feed pump oil outlet is told one road pressure oil and is inserted the valve body oil pocket through filter, second throttle orifice, act on simultaneously on the face of needle seating of pressure flow control valve and safety valve, the control oil content of pressure flow control valve and discharge of safety valve is a two-way, one the tunnel is communicated with the upper oil chamber of the control piston of changeable flow outlet valve through the first segment discharge orifice, act on the control piston, another road binders is got back to the low pressure oil suction chamber of oil feed pump through the 3rd throttle orifice; Be provided with the pilot pressure bleeder valve between described first segment discharge orifice and the 3rd throttle orifice.
On described oil feed pump, also be provided with emergency stop (apparatus), described emergency stop (apparatus) is arranged on the pump cover, include second valve body and the solenoid valve, needle-valve and the spring that are installed in second valve body, the road pressure oil of telling from the oil feed pump oil outlet inserts the oil pocket of described second valve body, act on the face of needle seating, after described needle-valve was opened, the oil of releasing of oil pocket then took back the low pressure oil suction chamber of oil feed pump.
Described pressure flow controlling device is connected with electrical control mechanism by elastic cable paper with emergency stop (apparatus).
Basic structure of the present utility model is swash plate rotary type axial piston pump, to realize the foundation of high pressure oil.For the functions such as Remote, stepless variable-flow, pressure adjusting, high security and reliability that realize high-pressure fuel-feed pump, specialized designs changeable flow outlet valve, pressure flow controlling device and emergency stop (apparatus).The specific function that these devices are had is:
1, the major function of changeable flow outlet valve is when plunger is up, requirement according to the required fuel delivery in outside, the shut-in time that changes oiling valve under the effect of control oil is realized the change of fuel delivery, and the unnecessary oil of plunger oil pocket then is back to the low pressure oil pocket simultaneously.The functional characteristics of this structure is: the unnecessary oil of plunger oil pocket is back to the function of low pressure oil pocket, has on the one hand realized the stepless adjustable of fuel delivery, and the power consumpiton when having reduced non-full flow on the other hand also helps the heat radiation of oil feed pump inside.
2, the major function of pressure flow controlling device is to regulate the output oil mass and the pressure of oil feed pump by special electrical signal.
3, the function of emergency stop (apparatus) is when oil feed pump or diesel engine appearance accident; when needing oil feed pump to stop high pressure oil being provided; emergency mobile forces stop signal by electrical control mechanism output; make no longer pressure spring of solenoid valve; needle-valve moves to right and is in open mode under the effect of pressure oil; the low pressure oil pocket of pressure oil circuit and oil feed pump is connected, and makes oil feed pump stop pressure oil output, does not damage because of unexpected with protection diesel engine and oil feed pump.
When 4, oil feed pump interrupts as or other unexpected appearance output oil on the low side because of pressure, make the needle-valve of pressure flow controlling device be in normally open by electrical control mechanism, the control-oil pressure that acts on this moment on the control piston reaches maximum, the oiling valve steel ball all can not be taken a seat in the total travel process that plunger rises, this moment, oil feed pump did not have pressure oil output, the up oil that pumps of plunger is all got back to the low pressure oil suction chamber of oil feed pump by the oiling valve steel ball, realized the inner loop of oil feed pump oil circuit.
Description of drawings
Fig. 1 is fuel feeding pump structure and working principle schematic representation
Fig. 2 is the structure and the working principle schematic representation of changeable flow outlet valve;
Fig. 3 is the structure and the working principle schematic representation of pressure flow controlling device;
Fig. 4 is the structure and the working principle schematic representation of emergency stop (apparatus).
Among the figure:
1. transmission shaft 2. pump housings 3. plungers 4. changeable flow outlet valves 5. pressure flow controlling devices 6. emergency stop (apparatus)s 7. upper bodies 8. cylinder bodies, 9. swash plates, 10. tapered roller bearings
4-1. valve body 4-2. outlet valve steel ball 4-3. oil outlet valve spring 4-4. oil outlet valve spring seat 4-5. control piston 4-6. oiling valve steel ball 4-7. oiling valve spring 4-8. oiling valve spring seat
5-1. the pump cover 5-2. safety valve 5-3. needle-valve 5-4. valve body 5-5. spring 5-6. pressure flow control valve 5-7. pilot pressure bleeder valve 5-8. filter 5-9. first segment discharge orifice 5-10. second throttle orifice 5-11. the 3rd throttle orifice
6-1. valve body 6-2. needle-valve 6-3. spring 6-4. solenoid valve
Embodiment
Referring to Fig. 1, oil feed pump is made up of cam-type axial piston pump, pressure flow controlling device 5 and emergency stop (apparatus) 6 three parts generally.Cam-type axial piston pump is made of parts such as transmission shaft 1, the pump housing 2, plunger 3, changeable flow outlet valve 4, upper body 7, cylinder body 8, swash plate 9, tapered roller bearings 10, and its function is to produce pressure oil.Pressure flow controlling device 5 is installed on the upper body 7 of cam-type axial piston pump, and emergency stop (apparatus) 6 is installed on the pump cover 5-1 of pressure flow controlling device.Oil feed pump adopts tapered roller bearing 10 to support.
Referring to Fig. 2, variable oil mass outlet valve partly is made up of valve body 4-1, outlet valve part and oiling valve, outlet valve partly comprises outlet valve steel ball 4-2, oil outlet valve spring 4-3 and the oil outlet valve spring seat 4-4 that is installed in the fuel-displaced valve pocket of valve body 4-1 successively, and oiling valve partly comprises control piston 4-5, oiling valve steel ball 4-6, oiling valve spring 4-7 and the oiling valve spring seat 4-8 that is installed in valve body 4-1 oil-feed valve pocket successively.The part of outlet valve part and oiling valve part all is contained in the valve body 4-1, forms an independently assembly.
Referring to Fig. 3, pressure flow controlling device 5 mainly is made up of pump cover 5-1, safety valve 5-2, needle-valve 5-3, the first valve body 5-4, spring 5-5, pressure flow control valve 5-6, pilot pressure bleeder valve 5-7, filter 5-8, first segment discharge orifice 5-9, the second throttle orifice 5-10, the 3rd throttle orifice 5-11.Wherein the first valve body 5-4 is installed on the pump cover 5-1, and safety valve 5-2 is arranged on the first valve body 5-4 right side, and needle-valve 5-3, spring 5-5 are installed in the valve body 5-4 left hole successively, and pressure flow control valve 5-6 is installed in the first valve body 5-4 end face and is pressed on the spring 5-5.Pilot pressure bleeder valve 5-7, filter 5-8, first segment discharge orifice 5-9, the second throttle orifice 5-10, the 3rd throttle orifice 5-11 all are arranged in the pump cover 5-1.
Referring to Fig. 4, emergency stop (apparatus) 6 mainly is made up of the second valve body 6-1, needle-valve 6-2, spring 6-3, solenoid valve 6-4.Wherein the second valve body 6-1 is installed on the pump cover 5-1, and needle-valve 6-2, spring 6-3 are installed in the second valve body 6-1 hole successively, and solenoid valve 6-4 is installed in the second valve body 6-1 end face and is pressed on the spring 6-3.
Below in conjunction with description of drawings working principle of the present utility model.
Fuel feeding pump structure described in the utility model and working principle as shown in Figure 1, basic principle is: swash plate 9 rotates under transmission shaft 1 drives, the plunger 3 that promotes to be distributed on the swash plate produces to-and-fro motion.When plunger 3 was descending, input pressure was greater than the plunger cavity oil pressure, and oiling valve steel ball 4-6 opens and outlet valve steel ball 4-2 closes, and low pressure oil enters plunger cavity, i.e. oil-absorbing process; On the contrary, when plunger was up, the pressure of plunger cavity raise gradually, and when pressure was higher than input pressure, second steel ball cut out, and first steel ball is opened, and plunger begins outside fuel feeding, i.e. oil extraction process.
The structure of changeable flow outlet valve described in the utility model and working principle as shown in Figure 2, its working principle is: output flow was realized by the time of taking a seat that changes oiling valve steel ball 4-6 from the control of pressure flow controlling device 5 oil.When not needing full flow, control-oil pressure can not be taken a seat the oiling valve steel ball when plunger 3 rises, and the oil of plunger cavity is got back to the low pressure oil suction chamber by oiling valve, plunger this moment fuel feeding not; When plunger quickens, act on oil pressure on the oiling valve steel ball and be increased in the time of can overcoming control oil and act on pressure on the steel ball, steel ball is taken a seat, and plunger begins fuel feeding.When the control-oil pressure increase, the time of taking a seat of oiling valve steel ball just prolongs more, and the plunger fuel delivery just diminishes; On the contrary, when control-oil pressure reduces, it is big that the plunger fuel delivery just becomes.Being also advantageous in that of this kind regulative mode: when not needing full flow, the oil of plunger cavity directly is back to oil suction chamber, reduces the driving power that oil pump consumes on the one hand, also has the function of heat radiation on the other hand, can reduce the temperature of plunger cavity greatly.
The structure of pressure flow controlling device 5 described in the utility model and working principle are as shown in Figure 3, its working principle is: the working pressure of oil feed pump is regulated by special signal, when signal strengthens, the control valve 5-6 pressure spring 5-5 that moves to left, make the spring force that acts on the needle-valve 5-3 increase the corresponding increase of the cracking pressure of needle-valve; When opposite signal weakened, solenoid valve moved to right, and the spring force that then acts on the needle-valve reduces, and the cracking pressure of needle-valve is corresponding to be reduced.Because the oil of releasing out when needle-valve is opened is the control oil of changeable flow oiling valve 4, the change of needle opening pressure causes that the flow of the oil of releasing after needle-valve is opened changes, pressure is also changed thereupon, thus the also corresponding change of flow of control oil feed pump.
The structure of emergency stop (apparatus) 6 described in the utility model and working principle as shown in Figure 4, its working principle is: solenoid valve 6-4 pressure spring 6-3 makes needle-valve 6-2 be in closed condition when when energising, and this moment, oil feed pump was in normal working; When urgency needs oil feed pump to quit work, cut off the signal of solenoid valve, solenoid valve moves to right, the pressure that acts on the needle-valve of spring reduces, and needle-valve is opened, and high-voltage oil cavity and low pressure oil suction chamber are connected, oil feed pump to go out oil pressure fundamental sum input pressure identical, oil feed pump stops outside fuel feeding.
Claims (3)
1. use for diesel engine multifunctional stepless variable-flow high-pressure oil feed pump, its basic structure is swash plate rotary type axial piston pump, swash plate (9) that include the pump housing (2), cylinder body (8), upper body (7), outlet valve (4), is driven by transmission shaft (1) and the plunger (3) of circle distribution on swash plate; It is characterized in that: described outlet valve (4) adopts the changeable flow outlet valve, also is provided with the pressure flow controlling device on described oil feed pump:
Described changeable flow outlet valve is arranged on the oil outlet top of plunger (3), and the oil outlet place correspondence of each plunger (3) is provided with one, comprises valve body (4-1) and is arranged on valve body (4-1) interior outlet valve part and oiling valve part; Wherein outlet valve partly is to set gradually outlet valve steel ball (4-2), oil outlet valve spring (4-3) and outlet valve bullet seat (4-4) and constitute between its oil inlet and outlet; Described oiling valve partly is to set gradually control piston (4-5), outlet valve steel ball (4-6), oiling valve spring (4-7) and oiling valve spring seat (4-8) and constitute between its oil inlet and outlet; The oil outlet of the filler opening of outlet valve part and oiling valve part is designed to same oil circuit and links to each other with the plunger oil outlet, and the oil outlet of each outlet valve part is connected together by annular groove and links to each other with the oil outlet of oil feed pump; The filler opening of oiling valve part is arranged on the middle part and links to each other with the low pressure oil suction chamber of oil feed pump, and control piston (4-5) top is connected with the control oil from the pressure flow controlling device;
Described pressure flow controlling device includes the pump cover (5-1) that is fixed on the oil feed pump upper body (7) and is arranged on first valve body (5-4), pressure flow control valve (5-6), pilot pressure bleeder valve (5-7), safety valve (5-2) and filter (5-8) on the pump cover (5-1); Pressure flow control valve (5-6) and safety valve (5-2) are arranged in the valve body (5-4), and they all adopt the needle valve structure; Pilot pressure bleeder valve (5-7) and filter (5-8) are arranged in the pump cover (5-1); Described oil feed pump oil outlet is told one road pressure oil and is inserted the valve body oil pocket through filter (5-8), second throttle orifice (5-10), act on simultaneously on the face of needle seating of pressure flow control valve (5-6) and safety valve (5-2), the control oil content that pressure flow control valve (5-6) and safety valve (5-2) are released is a two-way, one the tunnel is communicated with the upper oil chamber of the control piston (4-5) of changeable flow outlet valve through first segment discharge orifice (5-9), act on the control piston (4-5), another road binders is got back to the low pressure oil suction chamber of oil feed pump through the 3rd throttle orifice (5-11); Be provided with pilot pressure bleeder valve (5-7) between described first segment discharge orifice (5-9) and the 3rd throttle orifice (5-11);
Described pressure flow controlling device is connected with electrical control mechanism by elastic cable paper.
2. multifunctional stepless variable-flow high-pressure oil feed pump according to claim 1, it is characterized in that: on described oil feed pump, also be provided with emergency stop (apparatus), described emergency stop (apparatus) is arranged on the pump cover (5-1), include second valve body (6-1) and be installed in solenoid valve (6-4) in second valve body (6-1), needle-valve (6-2) and spring (6-3), the road pressure oil of telling from the oil feed pump oil outlet inserts the oil pocket of described second valve body (6-1), act on needle-valve (6-2) conical surface, after described needle-valve was opened, the oil of releasing of oil pocket then took back the low pressure oil suction chamber of oil feed pump;
Described emergency stop (apparatus) is connected with electrical control mechanism by elastic cable paper.
3. a kind of multifunctional stepless variable-flow high-pressure oil feed pump according to claim 1 and 2 is characterized in that: described oil feed pump adopts tapered roller bearing (10) to support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201278057U CN201521408U (en) | 2009-06-29 | 2009-06-29 | Multifunctional stepless variable-flow high-pressure oil supply pump used for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201278057U CN201521408U (en) | 2009-06-29 | 2009-06-29 | Multifunctional stepless variable-flow high-pressure oil supply pump used for diesel engine |
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| Publication Number | Publication Date |
|---|---|
| CN201521408U true CN201521408U (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201278057U Expired - Lifetime CN201521408U (en) | 2009-06-29 | 2009-06-29 | Multifunctional stepless variable-flow high-pressure oil supply pump used for diesel engine |
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| CN (1) | CN201521408U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723588A (en) * | 2019-02-28 | 2019-05-07 | 北油电控燃油喷射系统(天津)有限公司 | A kind of monomer high pressure fuel pump for common rail fuel injection system |
-
2009
- 2009-06-29 CN CN2009201278057U patent/CN201521408U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723588A (en) * | 2019-02-28 | 2019-05-07 | 北油电控燃油喷射系统(天津)有限公司 | A kind of monomer high pressure fuel pump for common rail fuel injection system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100707 |