CN219344852U - Metering valve - Google Patents
Metering valve Download PDFInfo
- Publication number
- CN219344852U CN219344852U CN202320771859.7U CN202320771859U CN219344852U CN 219344852 U CN219344852 U CN 219344852U CN 202320771859 U CN202320771859 U CN 202320771859U CN 219344852 U CN219344852 U CN 219344852U
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- armature
- valve
- valve core
- sealing plug
- base
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Abstract
The metering valve comprises a shell cover, a base, a valve core, a push rod and an armature, wherein the shell cover is covered with the base up and down, a valve cavity and a moving cavity are arranged in the shell cover, the valve core moves in the valve cavity, the armature is coated on the surface of the push rod, the armature drives the valve core to move in the moving cavity, one end of the valve core abuts against the bottom of the valve core, the other end of the valve core is flush with the end face of the armature, an opening is formed in the surface of the base, and a sealing plug is arranged at the opening. The movable armature has the advantages that when the armature is taken out of the movement cavity, the armature can be taken out for checking and replacing only by removing the sealing plug from the opening at the bottom of the base, and the movable armature is convenient and quick to use.
Description
Technical Field
The utility model relates to a metering valve, in particular to a fuel metering valve for an automobile.
Background
In an electrically controlled high pressure common rail injection system of a diesel engine, a fuel metering unit plays a very important role. The fuel metering unit is also called an oil inlet metering unit proportional valve, is arranged on the oil inlet side of the high-pressure oil pump, is a special electromagnetic valve, and has an opening which can be controlled by an engine computer at any stroke position so as to adjust the volume of fuel entering a plunger cavity of the high-pressure oil pump.
The metering unit is blocked or dead caused by the fuel quality problem, and the failure is often accompanied with the failure phenomena of vehicle acceleration weakness, engine speed limitation, abrupt flameout in running, unstable idling and the like. The main reason for the above problem is that the surface of the armature is worn by impurities during the up-and-down movement of the armature due to impurities contained in the fuel, resulting in an increase in the gap between the armature and the moving chamber.
Therefore, during actual use, the armature needs to be removed, inspected, and replaced occasionally. Traditional dismantlement mode needs to dismantle the metering valve is whole from the oil pump to decompose the metering valve, take out armature from inside, the dismantlement process is comparatively loaded down with trivial details, wastes time and energy.
Disclosure of Invention
In order to solve the problems, the metering valve is specially manufactured, and the armature is more convenient to disassemble, assemble and replace.
In order to achieve the above purpose, the present utility model is solved by the following technical scheme: the metering valve comprises a shell cover, a base, a valve core, a push rod and an armature, wherein the shell cover is covered with the base up and down, a valve cavity and a moving cavity are arranged in the shell cover, the valve core moves in the valve cavity, the armature is coated on the surface of the push rod, the armature drives the valve core to move in the moving cavity, one end of the valve core abuts against the bottom of the valve core, the other end of the valve core is flush with the end face of the armature, an opening is formed in the surface of the base, and a sealing plug is arranged at the opening.
Further, the base surface opening diameter is greater than the armature diameter.
Further, a step is arranged at the opening of the surface of the base, and a sealing ring is arranged at the step.
Further, the surface of the sealing plug is provided with a thread structure, and the sealing plug is in threaded engagement connection with the opening.
Further, a hexagonal counter bore is formed in the outer side surface of the sealing plug.
Further, a pull ring structure is arranged at the end face of the armature close to one side of the sealing plug.
Further, a reset spring is arranged between the sealing plug and the armature.
The utility model has the advantages that:
the oil pump is different from the traditional metering valve, the oil pump connecting part is required to be detached, the opening is formed in the bottom of the base, the opening is sealed through the sealing plug, and when the armature is required to be taken out of the motion cavity, the armature can be taken out for inspection and replacement only by removing the sealing plug from the opening at the bottom of the base.
Drawings
FIG. 1 is a schematic diagram of a metering valve according to the present utility model.
Fig. 2 is a schematic structural view of a sealing plug in a metering valve according to the present utility model.
Fig. 3 is a schematic structural view of a sealing plug in a metering valve according to the present utility model.
Reference numerals: the valve comprises a valve core 1, a push rod 2, an armature 3, a sealing plug 4, a sealing ring 5, a return spring 6, a pull ring structure 7, a thread structure 8 and a hexagonal counter bore 9.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
The metering valve comprises a shell cover, a base, a valve core, a push rod and an armature, wherein the shell cover is covered with the base up and down, a valve cavity and a moving cavity are arranged in the shell cover, the valve core moves in the valve cavity, the armature is coated on the surface of the push rod, the armature drives the valve core to move in the moving cavity, one end of the valve core abuts against the bottom of the valve core, the other end of the valve core is flush with the end face of the armature, an opening is formed in the surface of the base, and a sealing plug is arranged at the opening. The diameter of the opening on the surface of the base is larger than the diameter of the armature. The opening of the surface of the base is provided with a step, and the step is provided with a sealing ring. The surface of the sealing plug is provided with a thread structure, and the sealing plug is in threaded engagement connection with the opening. And a hexagonal counter bore is formed in the outer side surface of the sealing plug. And a pull ring structure is arranged at the end face of the armature close to one side of the sealing plug. And a reset spring is also arranged between the sealing plug and the armature.
In the actual use, install on the oil pump on one side of the metering valve case, need possess better leakproofness between metering valve and the oil pump, if the frequent dismouting will influence the sealed effect between the two. Therefore, the technical scheme is that an opening is formed in the metering valve base, and the opening is sealed through a threaded structure by the sealing plug. When the valve is disassembled, the sealing plug is disassembled by using the outer hexagonal wrench, the inside of the metering valve is a moving cavity, and the inside of the moving cavity is an armature. In order to be convenient for take out armature, still set up the pull ring structure at armature tip, after operating personnel will seal the end cap and pull the pull ring structure through thin hook or tweezers, can take out it from the motion chamber easily.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments and that the present utility model may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the present utility model be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. The metering valve is characterized by comprising a shell cover, a base, a valve core, a push rod and an armature, wherein the shell cover is covered with the base up and down, a valve cavity and a moving cavity are arranged in the shell cover, the valve core moves in the valve cavity, the armature is coated on the surface of the push rod, the armature drives the valve core to move in the moving cavity, one end of the valve core abuts against the bottom of the valve core, the other end of the valve core is flush with the end face of the armature, an opening is formed in the surface of the base, and a sealing plug is arranged at the opening.
2. A metering valve as claimed in claim 1 wherein the diameter of the opening in the base surface is greater than the diameter of the armature.
3. A metering valve as claimed in claim 2 wherein the opening in the surface of the base is provided with a step and the step is provided with a sealing ring.
4. A metering valve as claimed in claim 3 wherein the surface of the sealing plug is provided with a threaded formation and the sealing plug is threadably engaged with the opening.
5. A metering valve as claimed in claim 4 wherein the outer surface of the sealing plug is provided with a hexagonal counterbore.
6. A metering valve as claimed in claim 5 wherein the end face of the armature adjacent the sealing plug is provided with a tab formation.
7. The metering valve of claim 6 wherein a return spring is further disposed between the sealing plug and the armature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320771859.7U CN219344852U (en) | 2023-04-10 | 2023-04-10 | Metering valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320771859.7U CN219344852U (en) | 2023-04-10 | 2023-04-10 | Metering valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219344852U true CN219344852U (en) | 2023-07-14 |
Family
ID=87100648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320771859.7U Active CN219344852U (en) | 2023-04-10 | 2023-04-10 | Metering valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219344852U (en) |
-
2023
- 2023-04-10 CN CN202320771859.7U patent/CN219344852U/en active Active
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