CN101782064A - Oil return electromagnetic valve for dispensing pump - Google Patents
Oil return electromagnetic valve for dispensing pump Download PDFInfo
- Publication number
- CN101782064A CN101782064A CN201010105684A CN201010105684A CN101782064A CN 101782064 A CN101782064 A CN 101782064A CN 201010105684 A CN201010105684 A CN 201010105684A CN 201010105684 A CN201010105684 A CN 201010105684A CN 101782064 A CN101782064 A CN 101782064A
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- China
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- oil return
- valve body
- iron core
- valve
- solenoid valve
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Abstract
The invention relates to an oil return electromagnetic valve for a dispensing pump, two rows of oil return holes are respectively arranged at the left side and the right side of a valve body, a center hole is arranged on a valve seat, the valve body and a filter screen are riveted at the right end of the center hole of the valve body, the wall face at the right end of the valve seat is processed with side holes communicated with small oil return holes, the valve body is provided with a movable iron core, a return spring is arranged in the middle of a valve rod, and the movable iron core consists of an iron core, the valve rod and a rubber tip. The invention has the beneficial effects that: the problem that the four oil return holes and small oil return holes are completely isolated due to flow change caused by gap leakage between an inner hole of the valve body and an excircle of the movable iron core is avoided; by adopting a flat valve to control the switching of the two rows of oil return holes, the control precision of oil return amount can be improved, which can meet the control requirement of the dispensing pump; and the tightness of a rubber tip is not influenced, the oil return amount does not change and the product consistency can be ensured.
Description
Technical field
The present invention relates to the diesel engine fuel oil field, specifically a kind of proportioning pump oil return solenoid valve.
Background technique
Because country has carried out discharging Europe three standards at present, the control accuracy of original proportioning pump fuel supply advance angle does not reach the requirement of supercharging, the recirculating oil quantity dispersion degree of oil return solenoid valve control makes the recirculating oil quantity of each oil return solenoid valve different too greatly, cause the proportioning pump quality of product inconsistent, the gap requirement on machining accuracy of its reason one side valve body inner bore and moving iron core cylindrical is very high, can't adhere to producing in enormous quantities; When on the other hand oil return solenoid valve being installed to the proportioning pump shell, mounting torque is different, causes the micro-strain of valve body, causes the gap to change.Therefore very big to the influence of solenoid valve recirculating oil quantity, be difficult to control, so that the substandard ratio of product is very low, so must transform to original oil return solenoid valve structure.
Summary of the invention
At above defective, the invention provides a kind of switching of adopting plane valve control two to flow back to oilhole, can improve the recirculating oil quantity control accuracy, can reach the proportioning pump oil return solenoid valve that proportioning pump control requires, to solve many deficiencies of prior art.
For achieving the above object, the present invention is by the following technical solutions:
A kind of proportioning pump oil return solenoid valve, comprise that the valve body inboard is provided with yoke and coil, the left and right sides is respectively equipped with two and flows back to oilhole on the described valve body, and described valve seat is offered mesopore, valve body and filter screen are riveting in valve body mesopore right-hand member, and processing sidewise hole and little spill port are connected on the valve seat right-hand member wall; Moving iron core is set in the valve body, Returnning spring is installed in the middle of the valve rod; Described moving iron core is made up of iron core, valve rod and Rubber end; A two wherein row the quantity that flow back in the oilhole are 2-6, and another flows back to oilhole quantity is one; Described iron core outside is provided with the cylindrical shape copper sheathing and cooperates with moving iron core.
Proportioning pump of the present invention with the beneficial effect of oil return solenoid valve is: can avoid the changes in flow rate that causes because of the gap seepage between valve body inner bore and the moving iron core cylindrical, four spill ports and little spill port are thoroughly isolated; By adopting plane valve control two to flow back to the switching of oilhole, can improve the recirculating oil quantity control accuracy, can reach proportioning pump control requirement; Can not influence the sealing of Rubber end, recirculating oil quantity can not change, and can guarantee consistency of product.
Description of drawings
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is original proportioning pump oil return solenoid valve structural representation;
Fig. 2 is the structural representation of the described proportioning pump of the embodiment of the invention with oil return solenoid valve.
Among the figure:
1, wiring terminal; 2, yoke; 3, coil; 4, valve body; 5, sidewise hole; 6, moving iron core; 7, filter screen; 8, fixed core; 9, Returnning spring; 10, Returnning spring; 11, annular groove; 12, spill port; 13, seamed edge; 14, gap; 15, little spill port; 19, mesopore; 20, Rubber end; 21, guide sleeve; 22, iron core; 23, seal ring; 24, valve rod; 25, rubber plane; 26, plane on the valve seat; 28, valve seat; 29, copper sheathing.
Embodiment
As shown in Figure 1, the described proportioning pump oil return solenoid valve of the embodiment of the invention, present traditional proportioning pump oil return solenoid valve, electromagnetic valve body 4 left and right sides are provided with two and flow back to oilhole and be respectively hole 12 and 15, when the solenoid valve no electric circuit, moving iron core 6 is pressed on the filter screen 7 by return spring 9 in the solenoid valve, fuel admission valve body in the pump housing, most of fuel oil passes through annular groove 11 through moving iron core 6 upside faces 5, get back in the meeting fuel tank through 12 outflows of four spill ports, another part fuel oil flows back to fuel tank through little spill port 15, also has only a small amount of fuel oil to flow back into fuel tank through the gap 14 between moving iron core 6 cylindricals and valve body 4 endoporus through four spill ports 12.To get back to the flow of fuel tank bigger for fuel oil in this moment proportioning pump pump housing, causes the pressure of fuel oil in the pump housing to reduce, because the proportioning pump fuel supply advance angle is by fuel pressure decision in the pump housing, otherwise fuel pressure is low, the less fuel supply advance angle of fuel supply advance angle is then bigger; During the solenoid valve energising, electric current flows into coil 3 through wiring terminal, produce magnetic field, the magnetic line of force is through valve body 4, yoke 2, fixed core 8 and moving iron core 6 form closed magnetic circuit, moving iron core 6 moves to the conical surface 9 directions of fixed core 8, the seamed edge 13 of the annular groove 11 on the moving iron core 6 is closed 4 spill ports 12, the fuel oil that enters valve body 4 is only got back to fuel tank in small holes 15, but there is a small amount of fuel oil to get back to fuel tank through four spill ports 12 because of gap 14 seepages between 4 endoporus of valve body and the moving iron core 6, because reducing, the fuel oil of oil sump tank makes fuel pressure increase in the pump housing, thereby the oil pump feed advance angle is strengthened, satisfy the diesel engine starting requirement.Because China has carried out discharging Europe three standards at present, the control accuracy of original proportioning pump fuel supply advance angle does not reach the requirement of supercharging, the recirculating oil quantity dispersion degree of oil return solenoid valve control makes the recirculating oil quantity of each oil return solenoid valve different too greatly, cause the proportioning pump quality of product inconsistent, gap 14 requirement on machining accuracy of its reason one side valve body 4 endoporus and moving iron core 6 cylindricals are very high, produce in enormous quantities and cannot say for sure to demonstrate,prove, when on the other hand oil return solenoid valve being installed to the proportioning pump shell, mounting torque is different, cause the micro-strain of valve body 4, cause gap 14 to change, very big to the influence of solenoid valve recirculating oil quantity, be difficult to control, so that the substandard ratio of product is very low, so must transform to original oil return solenoid valve structure.
As shown in Figure 2, the described proportioning pump oil return solenoid valve of the embodiment of the invention, comprise wiring terminal 1, yoke 2, coil 3 and valve body 4, described valve body 4 inboards are provided with yoke 2 and coil 3, the left and right sides is respectively equipped with two and flows back to oilhole 12 on the described valve body 4, wherein a row is provided with four and another row is one, described valve seat 28 is offered mesopore 19 to be used for and four spill ports connections, valve body 4 is riveting in valve body 4 mesopores 19 right-hand members with filter screen 7, valve seat 28 left end cylindricals are equipped with seal ring 23 separates little oilhole and other spill port, and processing sidewise hole 5 is connected with little spill port 15 on the valve seat 28 right-hand member walls; Guide sleeve 21 is installed on valve body 4 middle parts, and the moving iron core of being made up of iron core 22, valve rod 24 and Rubber end 20 6 is set in the valve body 4, and Returnning spring 10 is installed in the middle of the valve rod 24; Described iron core 22 cooperates with valve rod 24, Rubber end 20 level pressure are wrapped on the valve rod 24, plane 26 compresses and can cut off fuel oil flows into four spill ports through mesopore 19 oil circuit on rubber plane 25 and the valve body, described iron core 22 outsides are provided with cylindrical shape copper sheathing 29 and cooperate with moving iron core 6 and make its move left and right, and described copper sheathing 29 two ends are provided with the fuel oil that seal ring 23 is used for sealed valve body.
The described proportioning pump oil return solenoid valve of the above embodiment of the invention, during the oil return solenoid valve no electric circuit, no current in the coil 3, magnetic field disappears, and Returnning spring 10 is pushed the Rubber end 20 of valve rod 24 to valve body 4 left ends, and throw off in the interior fuel oil inflow of the 1-2mm pump housings valve body 4 on plane 26 on rubber plane 25 and the valve seat, flow back into fuel tank through little spill port 15 on the one hand, flow back to fuel tank through mesopore 19 by four spill ports 12 on the other hand, fuel pressure is lower in the pump housing, and the oil pump feed advance angle is less; When electric current forms magnetic field through wiring terminal 1 in by coil 3, the magnetic line of force forms the closed-loop path through yoke 2 by iron core 22, valve rod 6, guide sleeve 21, make iron core 22 break away from the elastic force of Returnning spring 10 and move to guide sleeve 21 directions along valve rod 24, Rubber end 20, be close on the valve seat till the plane 26 until rubber plane 25, thereby cut off the passage that valve body 4 interior fuel oils flow to four spill ports, fuel oil is only through lateral aperture 5, flow to fuel tank from little spill port 15, recirculating oil quantity reduces greatly, make fuel pressure raising in the pump housing, thereby make the oil pump feed advance angle in advance.
Claims (4)
1. proportioning pump oil return solenoid valve, comprise that valve body (4) inboard is provided with yoke (2) and coil (3), it is characterized in that: the last left and right sides of described valve body (4) is respectively equipped with two and flows back to oilhole (12), described valve seat (28) is offered mesopore (19), valve body (4) is riveting in valve body (4) mesopore (19) right-hand member with filter screen (7), processes sidewise hole (5) on valve seat (28) the right-hand member wall and connects with little spill port (15); Moving iron core (6) is set in the valve body (4).
2. proportioning pump oil return solenoid valve according to claim 1 is characterized in that: described moving iron core (6) is made up of iron core (22), valve rod (24) and Rubber end (20).
3. proportioning pump oil return solenoid valve according to claim 1 is characterized in that: two a wherein row the quantity that flow back in the oilhole are 2-6, and another flows back to oilhole quantity is one.
4. proportioning pump oil return solenoid valve according to claim 2 is characterized in that: described iron core (22) outside is provided with cylindrical shape copper sheathing (29) and cooperates with moving iron core (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010105684A CN101782064A (en) | 2010-02-04 | 2010-02-04 | Oil return electromagnetic valve for dispensing pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010105684A CN101782064A (en) | 2010-02-04 | 2010-02-04 | Oil return electromagnetic valve for dispensing pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101782064A true CN101782064A (en) | 2010-07-21 |
Family
ID=42522196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010105684A Pending CN101782064A (en) | 2010-02-04 | 2010-02-04 | Oil return electromagnetic valve for dispensing pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101782064A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221406A (en) * | 2015-10-13 | 2016-01-06 | 广东新宝电器股份有限公司 | A kind of electromagnetic oscillation pump |
| CN107044545A (en) * | 2017-05-15 | 2017-08-15 | 南京威孚金宁有限公司 | A kind of VE types dispensing pump oil return solenoid valve and its method of work |
-
2010
- 2010-02-04 CN CN201010105684A patent/CN101782064A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221406A (en) * | 2015-10-13 | 2016-01-06 | 广东新宝电器股份有限公司 | A kind of electromagnetic oscillation pump |
| CN107044545A (en) * | 2017-05-15 | 2017-08-15 | 南京威孚金宁有限公司 | A kind of VE types dispensing pump oil return solenoid valve and its method of work |
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Application publication date: 20100721 |