CN201794693U - Piston type manual fuel supply pump of diesel engine fuel system - Google Patents
Piston type manual fuel supply pump of diesel engine fuel system Download PDFInfo
- Publication number
- CN201794693U CN201794693U CN2010201959696U CN201020195969U CN201794693U CN 201794693 U CN201794693 U CN 201794693U CN 2010201959696 U CN2010201959696 U CN 2010201959696U CN 201020195969 U CN201020195969 U CN 201020195969U CN 201794693 U CN201794693 U CN 201794693U
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- piston
- pump
- oil pump
- assembly
- fuel
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Abstract
The utility model discloses a piston type manual fuel supply pump of a diesel engine fuel system, which comprises a fuel pump joint (4), a pump body (5), a check valve assembly (7) and a fuel pump piston assembly (8), wherein the fuel pump piston assembly (8) includes a fuel pump piston (26), a piston rod (27), a fuel pump pull cover (28) and a piston casing (29) fixedly connected with the pump body (5). By adopting the technical scheme, the piston type manual fuel supply pump simplifies product structure, shortens production cycle, improves productivity of products, avoids leakage at a plurality of positions, especially enhances reliability of the products, reduces cost, and improves performance, thereby enhancing the performances of the products, prolonging the service lives of the products, reducing purchasing cost and laying a foundation for mass equipment on various vehicles.
Description
Technical field
The utility model belongs to the technical field of commercial car diesel engine, relates to the structure of its oil-fired system, and more particularly, the utility model relates to a kind of commercial car diesel fuel system piston type hand fuel pump.
Background technique
Commercial car diesel fuel system piston type hand fuel pump is connected on the vehicle chassis with bolt, is used for realizing the fuel delivery when main oil pump damages.
Shown in Figure 1 in hand fuel pump of the prior art such as this Figure of description comprises as lower member: connecting bolt 1, fuel inlet fitting 2, seal washer 3, oil pump joint 4, the pump housing 5, packing ring 6, safety check assembly 7, oil pump piston assembly 8, separation sleeve assembly 9, packing ring 10, O RunddichtringO 11, oil-feed plug screw 12, connecting cover 13, rectangular seal 14, oil storage cup 15, filter screen 16, lubricating cup raise the nose above water to breathe 17, lubricating cup spring 18, lubricating cup card 19, adjust nut 20, tighten screw 21, packing ring 22, nut 23.
From above-described formation, can find out, existing piston type hand fuel pump complex structure, cost is higher.Wherein oil storage cup 15 complex structures, rapid wear.Also can cause the vehicle oil way air inlet after the damage, when serious even cause engine misses.Oil pump piston assembly 8 connects complicated, easily causes leakage, influences product performance.
The model utility content
Problem to be solved in the utility model provides a kind of diesel fuel system piston type hand fuel pump, its objective is the reliability that improves hand fuel pump.
To achieve these goals, the technological scheme taked of the utility model is:
Diesel fuel system piston type hand fuel pump provided by the utility model, comprise oil pump joint, the pump housing, safety check assembly and oil pump piston assembly, described oil pump piston assembly comprises that oil pump piston, piston rod, oil pump draw lid and piston shell, and the described piston shell and the described pump housing are fastenedly connected.
For making the utility model more perfect, more detailed and concrete technological scheme below also further having proposed, to obtain best practical effect, realize goal of the invention better, and improve novelty of the present utility model and creativeness:
Described safety check assembly is two, is installed in the same way in the described pump housing, is pressed in the pump housing by screw thread by described oil pump joint.
Described hand fuel pump is established return spring, and described return spring one end contacts with described pump housing surface of internal cavity, and the other end contacts with the end face of described oil pump piston.
Between the end face of described oil pump piston and the described pump housing, establish seal washer, compress by worm structure by described oil pump piston assembly.
Compared with prior art, the beneficial effect obtained of the utility model is:
The utility model adopts technique scheme, has simplified product structure, has shortened the manufacture cycle, has improved the throughput of product; Avoided having more the phenomenon of leakage, particularly improved reliability of products, reduced cost, improved performance, thereby improved the performance and the working life of product; Reduced purchase cost, for various vehicle equipment in enormous quantities lays the foundation.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are made brief description:
Fig. 1 is the described structural representation of this specification background technique;
Fig. 2 is a structural representation of the present utility model.
Being labeled as among the figure:
1, connecting bolt, 2, fuel inlet fitting, 3, seal washer, 4, the oil pump joint, 5, the pump housing, 6, packing ring, 7, the safety check assembly, 8, the oil pump piston assembly, 9, the separation sleeve assembly, 10, packing ring, 11, the O RunddichtringO, 12, the oil-feed plug screw, 13, connecting cover, 14, rectangular seal, 15, oil storage cup, 16, filter screen, 17, lubricating cup is raised the nose above water to breathe, and 18, the lubricating cup spring, 19, the lubricating cup card, 20, adjust nut, 21, tighten screw, 22, packing ring, 23, nut, 24, seal washer, 25, return spring, 26, oil pump piston, 27, piston rod, 28, oil pump draws lid, and 29, piston shell.
Embodiment
Contrast accompanying drawing below,, embodiment of the present utility model is described in further detail, inventive concept of the present utility model, technological scheme are had more complete, accurate and deep understanding to help those skilled in the art by description to embodiment.
The of the present utility model structure expressed as Fig. 2, be diesel fuel system piston type hand fuel pump, comprise oil pump joint 4, the pump housing 5, safety check assembly 7 and oil pump piston assembly 8, described oil pump piston assembly 8 comprises that oil pump piston 26, piston rod 27, oil pump draw and covers 28 and piston shell 29.
In order to solve the problem that exists at the described present known technology of this specification background technique part and to overcome its defective, realize the goal of the invention of the reliability of raising hand fuel pump, the technological scheme that the utility model is taked is:
As shown in Figure 2, diesel fuel system piston type hand fuel pump provided by the utility model, described piston shell 29 is fastenedly connected with the described pump housing 5.
Technique scheme has been simplified the structure of hand fuel pump, has shortened the manufacture cycle, has reduced cost greatly, has particularly improved reliability of products and working life, for vehicle equipment in enormous quantities lays the foundation.
More specifically:
Safety check assembly 7 described in the utility model is two, is installed in the same way in the described pump housing 5, is pressed in the pump housing 5 by screw thread by described oil pump joint 4.
Hand fuel pump described in the utility model is established return spring 25, and described return spring 25 1 ends contact with the described pump housing 5 surface of internal cavity, and the other end contacts with the end face of described oil pump piston 26.
Between the end face of oil pump piston 26 described in the utility model and the described pump housing 5, establish seal washer 24, compress by worm structure by oil pump piston assembly 8.
Working principle of the present utility model and operating method are:
The oil pump of outwarding winding draws and covers 28, and piston rod 27 is ejected.Depress oil pump and draw and cover 28, oil pump piston 26 rebounds under the effect of return spring 25.20～30 times repeatedly, can make to form vacuum state in the oil pump piston assembly 8, the fuel oil in the oil tank of vehicle is extracted in the motor, motor can be run well.
Specifically in Fig. 2:
The oil pump on the oil pump piston assembly 8 outwarded winding draws and covers 28, and oil pump piston 26 can eject under the effect of return spring 25, can form vacuum state the pump housing 5 in, and the spool of the safety check assembly 7 on the right of making among Fig. 2 is opened; Depress oil pump and draw and cover 28, it is descending to drive oil pump piston 26, the air in the valve body can be discharged, and the spool of the safety check assembly 7 on the right among Fig. 2 is closed, and the spool of the safety check assembly 7 on the left side among Fig. 2 is opened.
In sum, the utlity model has following characteristics:
1, hand fuel pump of the present utility model has been cancelled the fuel strainer in the prior art structure: because being in series with diesel fuel filter on the oil circuit that connects, the filter of hand fuel pump has belonged to repeat function and effect is little, so cancel this device. The system leak that also can avoid in transportation and cause because of oil storage cup 15 damages in using.
2, simplified syndeton of the prior art: each parts all adopts and is threaded in the structure of prior art, reaches 7 places, as long as there is place seal failure will cause whole system to be leaked. By simplifying, change 3 places into by the connection of 7 places and connect, improved the sealing of hand fuel pump. Dwindle simultaneously product size, reduced weight.
3, improved the check-valves assembly structure; Two check-valves of the prior art are packed into from valve body one end, are separated by separation sleeve. Be prone to because of separation sleeve neglected loading or check-valves direction misloading. New construction valve body processed be convenient to check-valves isolation and recognize to structure, avoided unnecessary assembling accident.
4, increased pump oil power assisting device; New construction has been set up return spring 25 under pump oil piston, make operating personnel only need depress oil pump and draw and cover 28 and just can finish pump oil and move, and has improved the oily efficient of pump, has reduced operation easier.
Through after the above-mentioned improvement, the hand fuel pump that the utility model provides obviously improves than arrangement works and the reliability of prior art, and the pump oil mass is brought up to 300～350ml/min by 150～200ml/min; Fault rate is reduced to 0.6% by 5.8%.
By reference to the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (4)
1. diesel fuel system piston type hand fuel pump, comprise oil pump joint (4), the pump housing (5), safety check assembly (7) and oil pump piston assembly (8), described oil pump piston assembly (8) comprises that oil pump piston (26), piston rod (27), oil pump draw lid (28) and piston shell (29), is characterized in that: described piston shell (29) is fastenedly connected with the described pump housing (5).
2. according to the described diesel fuel system piston type of claim 1 hand fuel pump, it is characterized in that: described safety check assembly (7) is two, be installed in the same way in the described pump housing (5), be pressed in the pump housing (5) by screw thread by described oil pump joint (4).
3. according to claim 1 or 2 described diesel fuel system piston type hand fuel pumps, it is characterized in that: described hand fuel pump is established return spring (25), described return spring (25) one ends contact with the described pump housing (5) surface of internal cavity, and the other end contacts with the end face of described oil pump piston (26).
4. according to claim 1 or 2 described diesel fuel system piston type hand fuel pumps, it is characterized in that: between the end face of described oil pump piston (26) and the described pump housing (5), if seal washer (24) is compressed by worm structure by described oil pump piston assembly (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201959696U CN201794693U (en) | 2010-04-30 | 2010-04-30 | Piston type manual fuel supply pump of diesel engine fuel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201959696U CN201794693U (en) | 2010-04-30 | 2010-04-30 | Piston type manual fuel supply pump of diesel engine fuel system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794693U true CN201794693U (en) | 2011-04-13 |
Family
ID=43849606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201959696U Expired - Fee Related CN201794693U (en) | 2010-04-30 | 2010-04-30 | Piston type manual fuel supply pump of diesel engine fuel system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201794693U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062031A (en) * | 2010-12-02 | 2011-05-18 | 芜湖盛力制动有限责任公司 | Fuel transfer pump of diesel engine of commercial vehicle |
| CN102410116A (en) * | 2011-12-19 | 2012-04-11 | 芜湖盛力制动有限责任公司 | Manual fuel delivery pump for diesel engine fuel system of commercial vehicle |
-
2010
- 2010-04-30 CN CN2010201959696U patent/CN201794693U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062031A (en) * | 2010-12-02 | 2011-05-18 | 芜湖盛力制动有限责任公司 | Fuel transfer pump of diesel engine of commercial vehicle |
| CN102410116A (en) * | 2011-12-19 | 2012-04-11 | 芜湖盛力制动有限责任公司 | Manual fuel delivery pump for diesel engine fuel system of commercial vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20110430 |