CN103629029A - Novel Q-series fuel injection pump assembly - Google Patents
Novel Q-series fuel injection pump assembly Download PDFInfo
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- CN103629029A CN103629029A CN201310618703.6A CN201310618703A CN103629029A CN 103629029 A CN103629029 A CN 103629029A CN 201310618703 A CN201310618703 A CN 201310618703A CN 103629029 A CN103629029 A CN 103629029A
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- plunger
- pump housing
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- injection pump
- pump assembly
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Abstract
Disclosed is a novel Q-series fuel injection pump assembly. The novel Q-series fuel injection pump assembly comprises a fuel outlet valve connector (1), a pump body (3), a fuel outlet valve (4), a fuel outlet valve fastening base (5), a linkage plate (9), a plunger sleeve (11), a plunger (12), a tappet body (15) and a volume reduction device (23). The novel Q-series fuel injection pump assembly is characterized in that a plunger and barrel assembly and the pump body (3) are of a split-type structure, and the plunger and barrel assembly can slide up and down along an inner cavity of the pump body (3). According to the novel Q-series fuel injection pump assembly, the plunger sleeve is separated from the pump body, is a pair of quick-wear parts, can be independently manufactured and used and independently replaced during maintenance, and does not affect the continuous use of the pump body, and the pump body is only used as a supporting body part and is not required to bear the high-pressure and high-speed fuel pumping function, so that only carbon structural steel needs to be used for processing, and the raw material cost is greatly saved.
Description
Technical field
The invention belongs to a kind of small power generation unit, gardens Work machine, the supporting engine fittings of irrigation and drainage equipment for plant protection, specifically the diesel engine of above-mentioned machinery injection pump assembly.
Background technique
At present this field for many years always matching used injection pump assembly (hereinafter to be referred as former pump) it mainly there is the following aspects problem: plunger bushing and the pump housing are overall structure (two unifications), there is no independently plunger coupled parts, if its plunger coupled parts divides by function, in fact by the pump housing, plunger bushing, three of plungers, formed.Plunger coupled parts in injection pump assembly belongs to easily damaged parts, and at whole assembly, in useful life period, plunger coupled parts may repeatedly be changed, so just need to change and must change a new injection pump assembly once Wear of Plunger Pair, causes user cost very high.
Plunger bushing is the friction of bearing the reciprocal relative movement of high speed of plunger under high-pressure environment, and it must use high duty alloy steel making, and processes through carburizing and quenching.Also just because of former Q pump plunger sleeve and the pump housing are integrated, make the pump housing part that materials are relatively many also must use high duty alloy steel making simultaneously, and process through carburizing and quenching.The pump housing is a supporting mass with regard to its function, with structural carbon steel or Fine Steel Casting iron manufacture, has been enough to meet its functional requirement, does not more need to do the carburizing and quenching that technological requirement is strict, cost is higher.So former Q pump structure has not only been wasted a large amount of expensive superior alloy steels, also wasted a considerable heat treatment expense.Because plunger bushing and plunger (plunger coupled parts) are a pair of easily damaged partss, in certain life time, needing to change, due to the pump housing and plunger bushing conjuncted, when maintain and replace, also wasted like this pump housing.In discharge outlet, do not subtract container, be unfavorable for optimizing oil supply performance.
Summary of the invention
In order to solve the problem existing in original technology, the present invention proposes a kind of novel Q series injection pump assembly, make plunger bushing separated with the pump housing, allow independently plunger bushing and plunger be made into a secondary plunger coupled parts, change plunger coupled parts and just can solve wearing and tearing, oil inlet pipe assembly is changed into by directly bending of steel pipe by welding simultaneously, and cost and processing and fabricating expense can save material.
Technological scheme of the present invention is achieved in the following ways: novel Q series injection pump assembly, comprise discharge outlet, the pump housing, outlet valve, delivery valve holder, joining plate, plunger bushing, plunger, tappet body and subtract container and form, tappet body is provided with plunger, plunger and plunger bushing are made into a secondary plunger coupled parts and are located in the chamber of the pump housing, tappet body is connected with spring by the spring seat of honour with the pump housing, the end face of plunger coupled parts is provided with outlet valve, discharge outlet and subtract container, plunger end face is provided with oil outlet valve spring and outlet valve, it is characterized in that: described plunger coupled parts and the pump housing are split-type structurals, plunger coupled parts can slide up and down along the inner chamber of the pump housing.
The middle part of described plunger bushing is provided with oil inlet hole and high-voltage oil cavity, plunger bushing is located at the bottom of pump housing inner chamber, lubricant oil enters in high-voltage oil cavity from oil inlet hole, the pump housing and barrel supply port corresponding position are provided with filler opening and oil inlet pipe, and with seal with O ring, lubricant oil enters between plunger coupled parts and the pump housing.
There is locating slot the side of the large cylindrical of the described pump housing, and plunger positioning screwn is established within it, and seals with copper washer.
The bottom of described plunger is provided with fuel-flow control sleeve, controls plunger and does rotation motion to regulate the size of fuel delivery, and plunger tail is provided with spring lower seat and tappet body, and spring lower seat is provided with piston spring.
The top of described plunger coupled parts is provided with outlet valve, delivery valve seat, delivery valve gasket, oil outlet valve spring, discharge outlet and subtracts container, uses the seal of O shape rubber seal between discharge outlet and the pump housing.
In described discharge outlet, be provided with and subtract container, it can improve fuel injection characteristic, puies forward the performance of motor.
The flanged surface below of the described pump housing is provided with joining plate and paper washer, and three fixes by locating stud, and pump housing bottom cylindrical is provided with the spring seat of honour, and both fix by resilient key.
Structure of the present invention, plunger bushing is separated with the pump housing, and it is a pair of easily damaged parts, can independently manufacture and use, and when maintenance, can independently change, and does not affect the pump housing and continues to use.Oil inlet pipe directly bends and forms with tubing, simplifies the structure, and has obviously reduced cost of material and manufacture cost, the pump housing is only as support body part, do not need to bear the pump functional oil of high-voltage high-speed, so only need, with carbon structural steel processing, greatly save the cost of raw material.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is plunger coupled parts structural representation of the present invention.
Fig. 3 is plunger bushing structural representation of the present invention.
Fig. 4 is pump body structure schematic diagram.
Fig. 5 is oil inlet pipe schematic diagram.
In figure: 1 discharge outlet, 2 oil outlet valve springs, 3 pump housings, 4 outlet valves, 5 delivery valve holders, 6 delivery valve gaskets, 7 plunger positioning screwns, 8 copper washers, 9 joining plates, 10 fuel-flow control sleeves, 11 plunger bushings, 12 plungers, 13 piston springs, 14 spring lower seats, 15 tappet bodies, the 16 spring seats of honour, 17 resilient keys, 18 locating studs, 19 paper washers, 20O shape circle, 21 oil inlet pipes, 22O shape rubber seal, 23 subtract container, oil inlet hole 24,25 high-voltage oil cavities.
Embodiment
By Fig. 1, known, novel Q series injection pump assembly, by discharge outlet 1, oil outlet valve spring 2, the pump housing 3, outlet valve 4, delivery valve holder 5, delivery valve gasket 6, plunger positioning screwn 7, copper washer 8, joining plate 9, fuel-flow control sleeve 10, plunger bushing 11, plunger 12, piston spring 13, spring lower seat 14, tappet body 15, the spring seat of honour 16, resilient key 17, locating stud 18, paper washer 19, O shape circle 20, oil inlet pipe 21, O shape rubber seal 22, subtract container 23 and form, by the pump housing, be installed on motor in use.In tappet body 15, be provided with plunger 12, plunger bushing 11 is made into a secondary plunger coupled parts with plunger 12, plunger coupled parts outside is provided with the spring seat of honour 16, the spring seat of honour 16 is provided with the pump housing 3 and discharge outlet 1 above, plunger 12 tops are provided with oil outlet valve spring 2 and outlet valve 4, and plunger coupled parts can slide up and down along the inner chamber of the pump housing 3.Plunger bushing is provided with plunger 12 in 11 holes, and plunger 12 is reciprocating, and diesel oil is sprayed into cylinder of diesel engine work by combustion by high-pressure oil pipe and oil sprayer.The bottom of plunger 12 is provided with fuel-flow control sleeve 10, controls plunger 12 and does rotation motion to regulate the size of fuel delivery, and plunger tail is provided with spring lower seat 14, endures pole piece 15, and piston spring 13 is installed on spring lower seat.The top of plunger coupled parts is provided with outlet valve 4 and delivery valve seat 5, delivery valve gasket 6, oil outlet valve spring 2, discharge outlet 1 and subtracts container 23, and O shape rubber seal 22 is housed between discharge outlet and the pump housing.In described discharge outlet 1, be provided with and subtract container, it can improve fuel injection characteristic, puies forward the performance of motor.
By Fig. 2, being known, is plunger coupled parts structural representation of the present invention.In tappet body 15, be provided with plunger 12, plunger bushing 11 is made into a secondary plunger coupled parts with plunger 12.
By Fig. 3, being known, is plunger bushing structural representation of the present invention.The middle part of plunger bushing 11 is provided with oil inlet hole 24 and high-voltage oil cavity 25, the pump housing 3 belows are provided with plunger bushing 11, lubricant oil enters in high-voltage oil cavity 25 from oil inlet hole 24, on the pump housing, with barrel supply port corresponding position, oil inlet pipe 21 is housed, lubricated for plunger coupled parts and the pump housing 3.
By Fig. 4, being known, is pump body structure schematic diagram.There is locating slot 3-2 the side of the large cylindrical of the described pump housing 3, with plunger positioning screwn 7, by copper washer 8, seals, and on the pump housing, is provided with filler opening 3-1 with barrel supply port corresponding position, and seals with O shape circle 20.The flanged surface below of the described pump housing 3 is provided with joining plate 9 and paper washer 19, and three is fixing by locating stud 18, and pump housing bottom cylindrical is provided with the spring seat of honour 16, and both are fixing by resilient key 17., the structure shape of the pump housing and motor coupling part can be kidney-shaped, circular and rectangle, its material can be carbon steel or cast steel, cast iron.
By Fig. 5, being known, is oil inlet pipe schematic diagram.Oil inlet pipe 21 forms for steel pipe integral bends.
The present invention, because the change of pump housing function, so it also needn't carry out carburizing and quenching processing again, only has the obvious less plunger bushing direct quenching of volume can no longer need carburizing.Heat treatment process is simplified greatly, and heat treatment expense also declines to a great extent.
Plunger coupled parts in Injection Pump belongs to easily damaged parts, and in the normal using process of user, plunger coupled parts is the most easy to wear scraps.Former technology Q series Injection Pump, when Wear of Plunger Pair is scrapped, must change whole injection pump assembly, and the present invention only needs to change a secondary plunger coupled parts, and it only accounts for 15% left and right of assembly price.A motor tends to repeatedly change plunger coupled parts in whole working life, and the user cost of therefore saving is also very considerable.The present invention is owing to having designed independently plunger coupled parts, and it goes for the Q series Injection Pump such as the various flange shapes of kidney-shaped, circle and rectangle, makes to manufacture more economically, uses convenient.The present invention changes former cause inlet connector and the oil inlet pipe oil inlet pipe assembly that is welded as the oil inlet pipe being formed by the direct bending of tubing into, has saved inlet connector part, has also saved welding procedure, has obviously reduced cost of material and manufacturing cost.The present invention has been installed additional and has been subtracted container in discharge outlet, and it can improve fuel injection characteristic, puies forward the performance of motor.
Claims (7)
1. novel Q series injection pump assembly, comprise discharge outlet (1), the pump housing (3), outlet valve (4), delivery valve holder (5), joining plate (9), plunger bushing (11), plunger (12), tappet body (15) and subtract container (23) and form, tappet body (15) is provided with plunger (12), plunger (11) is made into a secondary plunger coupled parts with plunger bushing (11) and is located in the chamber of the pump housing (3), tappet body (15) is connected with spring (14) by the spring seat of honour (16) with the pump housing (3), the end face of plunger coupled parts is provided with outlet valve (4), discharge outlet (1) and subtract container (23), plunger (12) end face is provided with oil outlet valve spring (2) and outlet valve (4), it is characterized in that: described plunger coupled parts and the pump housing (3) are split-type structurals, plunger coupled parts can slide up and down along the inner chamber of the pump housing (3).
2. novel Q series injection pump assembly according to claim 1, it is characterized in that: the middle part of described plunger bushing (11) is provided with oil inlet hole (24) and high-voltage oil cavity (25), plunger bushing (11) is located at the bottom of the pump housing (3) inner chamber, lubricant oil enters in high-voltage oil cavity (25) from oil inlet hole (24), the pump housing (3) is provided with filler opening (3-1) and oil inlet pipe (21) with plunger bushing (11) oil inlet hole corresponding position, and seal with O shape circle (20), lubricant oil enters between plunger coupled parts and the pump housing (3).
3. novel Q series injection pump assembly according to claim 1, is characterized in that: there is locating slot (3-2) side of the large cylindrical of the described pump housing (3), and plunger positioning screwn (7) is established within it, and seals with copper washer (8).
4. novel Q series injection pump assembly according to claim 1, it is characterized in that: the bottom of described plunger (12) is provided with fuel-flow control sleeve (10), control plunger (12) and do rotation motion to regulate the size of fuel delivery, plunger tail is provided with spring lower seat (14) and tappet body (15), and spring lower seat (14) is provided with piston spring (13).
5. novel Q series injection pump assembly according to claim 1, it is characterized in that: the top of described plunger coupled parts is provided with outlet valve (4), delivery valve seat (5), delivery valve gasket (6), oil outlet valve spring (2), discharge outlet (1) and subtracts container (23), between discharge outlet and the pump housing, use O shape rubber seal (22) seal.
6. novel Q series injection pump assembly according to claim 1, is characterized in that: in described discharge outlet (1), be provided with and subtract container.
7. novel Q series injection pump assembly according to claim 1, it is characterized in that: the flanged surface below of the described pump housing (3) is provided with joining plate (9) and paper washer (19), three is fixing by locating stud (18), pump housing bottom cylindrical is provided with the spring seat of honour (16), and both are fixing by resilient key (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310618703.6A CN103629029A (en) | 2013-11-28 | 2013-11-28 | Novel Q-series fuel injection pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310618703.6A CN103629029A (en) | 2013-11-28 | 2013-11-28 | Novel Q-series fuel injection pump assembly |
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| Publication Number | Publication Date |
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| CN103629029A true CN103629029A (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310618703.6A Pending CN103629029A (en) | 2013-11-28 | 2013-11-28 | Novel Q-series fuel injection pump assembly |
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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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| US20050016499A1 (en) * | 2001-11-09 | 2005-01-27 | Toshifumi Noda | Injection pump and fuel dme feed device of diesel engine with the injection pump |
| CN101936245A (en) * | 2010-08-25 | 2011-01-05 | 无锡天鸿机械制造有限公司 | Oil feeder of single-cylinder air-cooling diesel engine |
| CN102518539A (en) * | 2011-12-20 | 2012-06-27 | 余姚市舒春机械有限公司 | Fuel injection pump assembly of medium-speed diesel engine |
| CN202560415U (en) * | 2012-05-14 | 2012-11-28 | 山东菏泽华星油泵油嘴有限公司 | Improved fuel injection pump assembly |
| JP2013204503A (en) * | 2012-03-28 | 2013-10-07 | Yanmar Co Ltd | Fuel injection pump |
| CN203594542U (en) * | 2013-11-28 | 2014-05-14 | 江苏金銮油泵有限公司 | Novel Q-series fuel injection pump assembly |
-
2013
- 2013-11-28 CN CN201310618703.6A patent/CN103629029A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050016499A1 (en) * | 2001-11-09 | 2005-01-27 | Toshifumi Noda | Injection pump and fuel dme feed device of diesel engine with the injection pump |
| CN101936245A (en) * | 2010-08-25 | 2011-01-05 | 无锡天鸿机械制造有限公司 | Oil feeder of single-cylinder air-cooling diesel engine |
| CN102518539A (en) * | 2011-12-20 | 2012-06-27 | 余姚市舒春机械有限公司 | Fuel injection pump assembly of medium-speed diesel engine |
| JP2013204503A (en) * | 2012-03-28 | 2013-10-07 | Yanmar Co Ltd | Fuel injection pump |
| CN202560415U (en) * | 2012-05-14 | 2012-11-28 | 山东菏泽华星油泵油嘴有限公司 | Improved fuel injection pump assembly |
| CN203594542U (en) * | 2013-11-28 | 2014-05-14 | 江苏金銮油泵有限公司 | Novel Q-series fuel injection pump assembly |
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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Application publication date: 20140312 |