CN202348506U - Fuel oil feeding pump with check valve and safety valve - Google Patents
Fuel oil feeding pump with check valve and safety valve Download PDFInfo
- Publication number
- CN202348506U CN202348506U CN2011205168621U CN201120516862U CN202348506U CN 202348506 U CN202348506 U CN 202348506U CN 2011205168621 U CN2011205168621 U CN 2011205168621U CN 201120516862 U CN201120516862 U CN 201120516862U CN 202348506 U CN202348506 U CN 202348506U
- Authority
- CN
- China
- Prior art keywords
- safety valve
- valve
- pump cover
- pump
- way valve
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
一种带单向阀的燃油输油泵，它包括泵体和泵盖，泵体和泵盖通过螺栓连接，传动轴安装在泵体和泵盖的轴孔中，传动齿安装在传动轴上。在泵盖的进油腔和出油腔之间设有一个单向阀安装孔，单向阀安装在单向阀安装孔内。在泵盖内的出油腔与泄油腔之间设有一个安全阀柱塞安装孔，安全阀柱塞安装在安全阀柱塞安装孔内，安全阀柱塞上设有四个均布的泄油孔。泵盖内安全阀孔的端口设有一个O型密封圈，安全阀螺塞盖采用螺纹连接方式拧在泵盖上的安全阀孔内，并通过O型密封圈9密封。安全阀弹簧安装在泵盖上的安全阀孔内，安全阀弹簧的一端顶在安全阀柱塞的凸台端面上，另一端顶在安全阀螺塞盖的内底端。
A fuel transfer pump with a one-way valve includes a pump body and a pump cover, which are bolted together. A drive shaft is installed in the shaft holes of the pump body and pump cover, and drive gears are mounted on the drive shaft. A one-way valve mounting hole is provided between the inlet and outlet chambers of the pump cover, and the one-way valve is installed in the one-way valve mounting hole. A safety valve plunger mounting hole is provided between the outlet and drain chambers inside the pump cover, and the safety valve plunger is installed in the safety valve plunger mounting hole. The safety valve plunger has four evenly distributed drain holes. An O-ring is provided at the port of the safety valve hole inside the pump cover. A safety valve plug cap is screwed into the safety valve hole on the pump cover by a threaded connection and sealed by the O-ring. A safety valve spring is installed in the safety valve hole on the pump cover, with one end of the safety valve spring abutting the boss end face of the safety valve plunger and the other end abutting the inner bottom end of the safety valve plug cap.
Description
Technical field
The utility model relates to a kind of fuel oil pump, and is particularly a kind of with one-way valve and the fuel oil pump of relief valve design in pump cover.
Background technique
The prior fuel oil oil transfer pump all is equipped with two one-way valves, and an end of one of them one-way valve connects the oil suction chamber of fuel oil pump, and the other end connects fuel tank; One end of another one-way valve connects the oil pocket that of fuel oil pump, and the other end connecting tube arrives high-pressure service pump with fuel delivery.Its deficiency is: owing at fuel oil pump hydraulic fluid port and oil outlet an one-way valve is housed respectively, fuel oil pump carries fuel oil will overcome the spring resistance in two one-way valves, and this just has influence on the loss of fuel oil pump oil absorption and charge oil pressure.
Summary of the invention
The purpose of the utility model is to overcome the above-mentioned deficiency of existing technology and provide a kind of with one-way valve and the fuel oil pump of relief valve design in pump cover.
The technological scheme of the utility model is: a kind of fuel oil pump with one-way valve and safety valve, and it comprises the pump housing and pump cover, and the pump housing is connected through bolt with pump cover, and transmission shaft is installed in the axis hole of the pump housing and pump cover, and driving cog is installed on the transmission shaft.
At the oil suction chamber of pump cover with go out to be provided with between the oil pocket one-way valve mounting hole, one-way valve is installed in the one-way valve mounting hole, adopts interference fit between one-way valve and the one-way valve mounting hole.Going out in pump cover is provided with a safety valve plunger mounting hole between oil pocket and the draining chamber; The safety valve plunger is installed in the safety valve plunger mounting hole; The safety valve plunger is provided with four draining holes that are uniformly distributed with, and safety valve plunger and safety valve plunger mounting hole adopt movingly.The port in pump cover internal safety valve hole is provided with an O RunddichtringO, and safety valve plug screw lid adopts thread connecting mode to be screwed in the safe valve opening on the pump cover, and through 9 sealings of O RunddichtringO.Safety valve spring is installed in the safe valve opening on the pump cover, and an end of safety valve spring withstands on the raised head face of safety valve plunger, and the other end withstands on the interior bottom of safety valve plug screw lid.
Described one-way valve is made up of unidirectional valve seat, steel ball, spring and spring seat, and steel ball and spring are installed in the spring seat, and spring seat is fixedly mounted on the inner chamber of unidirectional valve seat, and steel ball withstands on the filler opening of unidirectional valve seat.The cylindrical of spring seat is provided with four oil outlets, and four oil outlets are distributed on the cylindrical of spring seat.
The band one-way valve that the utility model provides and the fuel oil pump of safety valve; One-way valve and safety valve all are installed on the pump cover; And check valve assembly is installed on the safety valve lower end; The filler opening of one-way valve communicates with oil suction chamber, and the oil outlet of check valve assembly communicates with going out oil pocket, and the draining chamber in the pump cover also communicates with oil suction chamber.After fuel oil pump is installed on the motor, make the air in pipeline and the pump chamber back down one-way valve, get into out oil pocket, and then discharge, favourablely start with engine ignition through flowline from the filler opening of one-way valve through hand pump.And when overpressure, high pressure oil backs down the safety valve plunger, and high pressure oil is gone into the discharge of draining chamber from the draining orifice flow on the safety valve plunger and got into oil suction chamber again, reaches the effect of control maximum pressure.
The utility model compared with prior art has following characteristics:
1, the band one-way valve that provides of the utility model and the fuel oil pump of safety valve; Because in pump cover, and one-way valve is installed on the safety valve lower end with one-way valve and relief valve design, and unlike the prior fuel oil oil transfer pump at oil pump turnover oil pipe place's installation one-way valve; Make the fuel oil pump compact structure; Exhaust is more convenient, complete, helps rapidly fuel delivery in jar, supplies engine ignition to start.
2, the fuel oil pump of the band one-way valve that provides of the utility model and safety valve has only designed an one-way valve in pump cover; And one-way valve is installed at oil pump turnover oil pipe place unlike the prior fuel oil oil transfer pump; Reduced by an one-way valve; As long as fuel oil pump carries fuel oil to overcome the spring resistance in the one-way valve, improved the fuel oil pump oil absorption, reduced the loss of fuel oil pump charge oil pressure.
Further describe below in conjunction with accompanying drawing and embodiment detailed structure the utility model.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model;
Accompanying drawing 2 is the A-A sectional view in the accompanying drawing 1;
Accompanying drawing 3 is the structural representation of one-way valve.
Embodiment
A kind of fuel oil pump with one-way valve and safety valve, it comprises the pump housing 2 and pump cover 1, draws together the pump housing 2 and pump cover 1 and is connected through bolt, and transmission shaft 3 is installed in the axis hole of the pump housing 2 and pump cover 1, and driving cog 4 is installed on the transmission shaft 3.
At the oil suction chamber 1-1 of pump cover 1 with go out to be provided with an one-way valve mounting hole between the oil pocket 1-2, one-way valve 5 is installed in the one-way valve mounting hole, adopts interference fit between one-way valve 5 and the one-way valve mounting hole.Going out in pump cover 1 is provided with a safety valve plunger mounting hole between oil pocket 1-2 and the draining chamber 1-3; Safety valve plunger 6 is installed in the safety valve plunger mounting hole; Safety valve plunger 6 is provided with four draining hole 6-1 that are uniformly distributed with, and safety valve plunger 6 adopts movingly with safety valve plunger mounting hole.The port in pump cover 1 internal safety valve hole is provided with an O RunddichtringO 9, and safety valve plug screw lid 8 adopts thread connecting mode to be screwed in the safe valve opening on the pump cover 1, and through 9 sealings of O RunddichtringO.Safety valve spring 7 is installed in the safe valve opening on the pump cover 1, and an end of safety valve spring 7 withstands on the raised head face of safety valve plunger 6, and the other end withstands on the interior bottom of safety valve plug screw lid 8.
Described one-way valve is made up of unidirectional valve seat 5-1, steel ball 5-2, spring 5-3 and spring seat 5-4; Steel ball 5-2 and spring 5-3 are installed in the spring seat 5-4; Spring seat 5-4 is fixedly mounted on the inner chamber of unidirectional valve seat 5-1, and steel ball 5-2 withstands on the filler opening of unidirectional valve seat 5-1.The cylindrical of spring seat 5-4 is provided with four oil outlet 5-5, and four oil outlet 5-5 are distributed on the cylindrical of spring seat 5-4.
Claims (2)
1. fuel oil pump with one-way valve and safety valve, it comprises the pump housing and pump cover, and the pump housing is connected through bolt with pump cover, and transmission shaft is installed in the axis hole of the pump housing and pump cover, and driving cog is installed on the transmission shaft, it is characterized in that:
At the oil suction chamber of pump cover with go out to be provided with between the oil pocket one-way valve mounting hole, one-way valve is installed in the one-way valve mounting hole, adopts interference fit between one-way valve and the one-way valve mounting hole; Going out in pump cover is provided with a safety valve plunger mounting hole between oil pocket and the draining chamber; The safety valve plunger is installed in the safety valve plunger mounting hole; The safety valve plunger is provided with four draining holes that are uniformly distributed with, and safety valve plunger and safety valve plunger mounting hole adopt movingly; The port in pump cover internal safety valve hole is provided with an O RunddichtringO, and safety valve plug screw lid adopts thread connecting mode to be screwed in the safe valve opening on the pump cover, and through 9 sealings of O RunddichtringO; Safety valve spring is installed in the safe valve opening on the pump cover, and an end of safety valve spring withstands on the raised head face of safety valve plunger, and the other end withstands on the interior bottom of safety valve plug screw lid.
2. a kind of fuel oil pump according to claim 1 with one-way valve and safety valve; It is characterized in that: described one-way valve is made up of unidirectional valve seat, steel ball, spring and spring seat; Steel ball and spring are installed in the spring seat; Spring seat is fixedly mounted on the inner chamber of unidirectional valve seat, and steel ball withstands on the filler opening of unidirectional valve seat; The cylindrical of spring seat is provided with four oil outlets, and four oil outlets are distributed on the cylindrical of spring seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205168621U CN202348506U (en) | 2011-12-13 | 2011-12-13 | Fuel oil feeding pump with check valve and safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205168621U CN202348506U (en) | 2011-12-13 | 2011-12-13 | Fuel oil feeding pump with check valve and safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348506U true CN202348506U (en) | 2012-07-25 |
Family
ID=46537515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205168621U Expired - Lifetime CN202348506U (en) | 2011-12-13 | 2011-12-13 | Fuel oil feeding pump with check valve and safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360041A (en) * | 2019-08-08 | 2019-10-22 | 思达耐精密机电（常熟）有限公司 | A kind of novel fuel pump for preventing oil sealing from leaking and detecting oil seal failure |
-
2011
- 2011-12-13 CN CN2011205168621U patent/CN202348506U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360041A (en) * | 2019-08-08 | 2019-10-22 | 思达耐精密机电（常熟）有限公司 | A kind of novel fuel pump for preventing oil sealing from leaking and detecting oil seal failure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2459863B1 (en) | Fuel supply system for an internal combustion engine | |
| WO2008005443A3 (en) | Pump apparatus and method | |
| WO2011008715A3 (en) | Dispensing pump | |
| CN202348506U (en) | Fuel oil feeding pump with check valve and safety valve | |
| CN102720676A (en) | Pressure valve and suction nozzle linkage self-priming device for self-priming pump | |
| RU135073U1 (en) | OIL PUMP FOR INTERNAL COMBUSTION ENGINE | |
| CN201671833U (en) | Jet self-priming pump | |
| CN203925845U (en) | A kind of use for diesel engine single cylinder high pressure oil pump | |
| CN101144466B (en) | Differential constant flow pump | |
| CN103206325A (en) | Fuel pump with safety valve | |
| CN209855984U (en) | Single-plunger pump | |
| RU2601066C2 (en) | Internal combustion engine oil pump | |
| CN204553944U (en) | A kind of one-way valve of anti-backflow | |
| CN205918532U (en) | High isobaric injection pump of type of strengthening | |
| CN102556887B (en) | Portable electric hydraulic jack | |
| CN202228214U (en) | A pressure regulator and pressure reducer for an electronically controlled injection system of a gas vehicle | |
| CN219412898U (en) | Unidirectional safe pressure relief assembly for pump of three-screw diesel engine | |
| CN201016329Y (en) | Adjustable combination valve hydraulic force balancing pump head | |
| CN204061113U (en) | Diaphragm gasoline pump | |
| CN202203193U (en) | Multifunctional gear pump for band sawing machine | |
| CN201009738Y (en) | Auxiliary oil supplying device of vehicle oil cell | |
| CN205478041U (en) | Electrically controlled monoblock pump | |
| CN102352839A (en) | Integrated hydraulic packet | |
| CN201003454Y (en) | Electric fuel pump assembly | |
| CN203783893U (en) | Gear pump internally provided with unloading device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |