CN215257925U

CN215257925U - Improved fuel metering valve

Info

Publication number: CN215257925U
Application number: CN202120130668.3U
Authority: CN
Inventors: 朱志杰
Original assignee: Ruian Ruiluqi Auto Parts Co ltd
Current assignee: Ruian Ruiluqi Auto Parts Co ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-12-21
Anticipated expiration: 2031-01-18

Abstract

The utility model relates to a metering valve technical field, in particular to improved generation fuel metering valve, including the electro-magnet with install the mechanical slide valve on the electro-magnet, install in the inside armature part of electro-magnet, mechanical slide valve includes the disk seat, installs the case in the disk seat, the disk seat lateral wall, the disk seat tip are equipped with the oil inlet that switches on with the disk seat inner chamber respectively, the oil drain port, are equipped with filter screen mounting structure in the case, armature part includes armature body and suit armature cover on armature body, armature part passes through the mount pad setting in the electro-magnet, is equipped with the quick detach structure that makes things convenient for armature part to dismantle on the mount pad, the beneficial effects of the utility model are that: the metering valve is improved, the service life of the metering valve is prolonged, and the overall performance of the metering valve is improved.

Description

Improved fuel metering valve

Technical Field

The utility model relates to a metering valve technical field, concretely relates to improved generation fuel metering valve.

Background

With the implementation of emission regulations and the increasing requirements of people on the dynamic performance of vehicles, diesel engines and other fuel systems requiring high injection pressure can be sufficient, and a high-pressure common rail system is preferred at present.

However, the existing metering valves have the following disadvantages: 1) the action stroke is large, the action frequency is high, and the lubricating effect cannot be achieved only by using diesel oil for lubrication, so that the clamping and abrasion of mechanical motion parts often occur, and the service life is influenced; 2) the existing metering valve is lack of a filter screen structure, oil directly enters the valve body from an oil inlet, the oil in the valve body is discharged from an oil discharge port, impurities in the oil can enter a plunger cavity of a high-pressure oil pump matched with the metering valve through the metering valve, the blockage is easy to occur, related parts are abraded, and the service life is influenced; 3) the movable iron core assembly is a key component in the metering valve, when the movable iron core assembly needs to be replaced, a special tool needs to be used for pulling out the valve body which is tightly matched with the shell, and if the valve body is pulled out and then pressed in again, the performance of the metering valve is unstable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to above-mentioned prior art not enough, provide an improved generation fuel metering valve, make the improvement to the metering valve, extension metering valve life improves the metering valve wholeness ability.

In order to achieve the above purpose, the utility model provides a following technical scheme: an improved fuel metering valve, comprising an electromagnet, a mechanical slide valve arranged on the electromagnet, and an armature component arranged inside the electromagnet, and is characterized in that: the mechanical slide valve comprises a valve seat and a valve core installed in the valve seat, an oil inlet and an oil outlet which are communicated with an inner cavity of the valve seat are respectively formed in the side wall of the valve seat and the end portion of the valve seat, a filter screen installation structure is arranged in the valve core, an armature part comprises an armature body and an armature sleeve sleeved on the armature body, the armature part is arranged in the electromagnet through an installation seat, and a quick-release structure which is convenient for the armature part to be detached is arranged on the installation seat.

The utility model has the characteristics as above: set up filter screen mounting structure in the case, set up the filter screen, can filter the fuel through the metering valve, prevent that the foreign particles from wearing and tearing to relevant part, effectively prolong the life of metering valve, set up the quick detach structure who makes things convenient for armature part to dismantle on the mount pad, the follow-up maintenance of being convenient for reduces the influence to other parts when the dismouting simultaneously.

The utility model discloses further setting is: the installation structure comprises a screw hole formed in the installation seat, a nut matched with the screw hole for use is arranged in the screw hole, an installation groove for installing the armature body is formed in one end, facing the inside of the electromagnet, of the nut, and a straight groove is formed in one end, far away from the inside of the electromagnet, of the nut.

The utility model has the characteristics as above: the nut is connected with the screw hole through threads, the straight groove is arranged to facilitate the disassembly of the nut, the armature component can be replaced only by unscrewing the nut, the operation is simple, and the time is saved.

The utility model discloses further setting is: the filter screen mounting structure comprises a filter screen arranged inside a valve core, wherein a slot for mounting the filter screen and a seal groove for mounting a seal ring are formed in the valve core, a seal gasket is arranged at the bottom of the slot, the seal gasket is arranged inside the filter screen and abuts against the inner wall of the filter screen, and the inner wall of the seal gasket abuts against the outer wall of the filter screen.

The utility model has the characteristics as above: the filter screen is inserted into the valve core, and the sealing gasket and the sealing ring have a limiting effect on the filter screen in the horizontal direction.

The utility model discloses further setting is: the end part of the armature body is provided with a step for mounting the armature sleeve, and the step are in interference fit.

The utility model has the characteristics as above: the armature body and the armature sleeve are arranged in a split mode, the integral wear-resisting property can be effectively improved only by improving the hardness of the armature sleeve at the friction position, the armature sleeve is convenient to precisely machine and thermally process, the service life of the metering valve is effectively prolonged, and meanwhile the manufacturing cost is reduced.

The utility model discloses further setting is: and the outer layer of the armature sleeve is coated with an antifriction coating.

The utility model has the characteristics as above: the wear-resistant coating can reduce friction force, thereby reducing wear and prolonging the service life of the armature sleeve.

The utility model discloses further setting is: the nut is provided with a sealing ring, and the sealing ring is positioned between the nut and the mounting seat.

The utility model has the characteristics as above: the sealing washer has sealed effect to nut and mount pad, avoids impurity to get into inside.

The utility model discloses further setting is: and a buffer spring connected with the armature body is arranged in the mounting groove.

The utility model has the characteristics as above: a buffer spring is arranged between the armature body and the nut, so that the impact force of the armature body on the nut during working is reduced.

The utility model discloses further setting is: a clamping groove for installing a clamping ring is formed in the valve core, and the clamping ring is arranged above the filter screen and abuts against the end portion of the filter screen.

The utility model has the characteristics as above: the clamping ring exerts an axial force on the filter screen, so that the filter screen is matched with the slot to more closely prevent the filter screen from falling off, and the sealing performance is improved by better matching with the sealing gasket.

The utility model discloses further setting is: the side wall of the valve core is provided with a throttling hole communicated with the inner cavity, the end part of the valve core is provided with a hole cavity communicated with the throttling hole, and the throttling hole is arranged on the side wall covered by the filter screen.

The utility model has the characteristics as above: when fluid flowed in from the oil inlet of disk seat, need just can get into the case inner chamber through the orifice, then fluid flowed out from the oil drain port of disk seat, at the removal in-process of case, realized the regulation to orifice and the coincidence area size of oil inlet, realized promptly to entering into the regulation of the inside fluid flow of case, the realization is to the control of fluid discharge capacity.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an armature component according to an embodiment of the present invention.

Fig. 3 is the utility model discloses filter screen mounting structure's schematic structure diagram.

Fig. 4 is a schematic structural diagram of a quick release structure according to an embodiment of the present invention.

Detailed Description

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

An improved fuel metering valve as shown in fig. 1-4 comprises an electromagnet 1, a mechanical slide valve 2 mounted on the electromagnet 1, and an armature component 3 mounted inside the electromagnet 1, wherein the mechanical slide valve 2 comprises a valve seat 4 and a valve core 5 mounted in the valve seat 4, an oil inlet 41 and an oil outlet 42 communicated with an inner cavity of the valve seat 4 are respectively arranged on a side wall of the valve seat 4 and an end part of the valve seat 4, a filter screen mounting structure is arranged in the valve core 5, the armature component 3 comprises an armature body 31 and an armature sleeve 32 sleeved on the armature body 31, the armature component 3 is arranged in the electromagnet 1 through a mounting seat 6, and a quick-release structure facilitating the detachment of the armature component 3 is arranged on the mounting seat 6.

The mounting structure is including setting up screw 61 on mount pad 6, be equipped with in the screw 61 rather than supporting nut 7 that uses, nut 7 is equipped with the mounting groove 71 that supplies armature body 31 installation towards the inside one end of electro-magnet 1, is equipped with the buffer spring 11 of being connected with armature body 31 in the mounting groove 71, and the inside one end of electro-magnet 1 is kept away from to nut 7 is equipped with straight line groove 72, installs sealing washer 9 on the nut 7, and sealing washer 9 is located between nut 7 and the mount pad 6.

The filter screen mounting structure is including setting up the filter screen 8 in case 5 inside, be equipped with the slot 51 that supplies the installation of filter screen 8 in the case 5, the seal groove 52 of supplying the installation of sealing washer 9, slot 51 bottom is equipped with sealed pad 10, sealed pad 10 is arranged in filter screen 8 inside and is supported with the inner wall of filter screen 8, the inner wall of sealing washer 9 offsets with the outer wall of filter screen 8, be equipped with the draw-in groove 53 of installation snap ring 12 in the case 5, snap ring 12 is arranged in filter screen 8 top and is supported rather than the tip in, case 5 lateral wall is equipped with the orifice 54 that switches on with the inner chamber, case 5 tip is equipped with the vestibule 55 that switches on with orifice 54, orifice 54 sets up the lateral wall that is covered by filter screen 8, filter screen 8 is fixed in slot 51, the fuel that flows into the case inner chamber through the orifice is inevitable to pass through the filtration of filter screen.

The end of the armature body 31 is provided with a step 311 for installing the armature sleeve 32, the armature sleeve 32 and the step are in interference fit, and the outer layer of the armature sleeve 32 is coated with an antifriction coating.

Claims

1. An improved fuel metering valve, comprising an electromagnet, a mechanical slide valve arranged on the electromagnet, and an armature component arranged inside the electromagnet, and is characterized in that: the mechanical slide valve comprises a valve seat and a valve core installed in the valve seat, an oil inlet and an oil outlet which are communicated with an inner cavity of the valve seat are respectively formed in the side wall of the valve seat and the end portion of the valve seat, a filter screen installation structure is arranged in the valve core, an armature part comprises an armature body and an armature sleeve sleeved on the armature body, the armature part is arranged in the electromagnet through an installation seat, and a quick-release structure which is convenient for the armature part to be detached is arranged on the installation seat.

2. An improved fuel metering valve as set forth in claim 1 wherein: the installation structure comprises a screw hole formed in the installation seat, a nut matched with the screw hole for use is arranged in the screw hole, an installation groove for installing the armature body is formed in one end, facing the inside of the electromagnet, of the nut, and a straight groove is formed in one end, far away from the inside of the electromagnet, of the nut.

3. An improved fuel metering valve as set forth in claim 1 wherein: the filter screen mounting structure comprises a filter screen arranged inside a valve core, wherein a slot for mounting the filter screen and a seal groove for mounting a seal ring are formed in the valve core, a seal gasket is arranged at the bottom of the slot, the seal gasket is arranged inside the filter screen and abuts against the inner wall of the filter screen, and the inner wall of the seal gasket abuts against the outer wall of the filter screen.

4. An improved fuel metering valve as set forth in claim 1 wherein: the end part of the armature body is provided with a step for mounting the armature sleeve, and the step are in interference fit.

5. An improved fuel metering valve as set forth in claim 1 wherein: and the outer layer of the armature sleeve is coated with an antifriction coating.

6. An improved fuel metering valve as set forth in claim 2 wherein: the nut is provided with a sealing ring, and the sealing ring is positioned between the nut and the mounting seat.

7. An improved fuel metering valve as set forth in claim 2 wherein: and a buffer spring connected with the armature body is arranged in the mounting groove.

8. An improved fuel metering valve as set forth in claim 3 wherein: a clamping groove for installing a clamping ring is formed in the valve core, and the clamping ring is arranged above the filter screen and abuts against the end portion of the filter screen.

9. An improved fuel metering valve as set forth in claim 3 wherein: the side wall of the valve core is provided with a throttling hole communicated with the inner cavity, the end part of the valve core is provided with a hole cavity communicated with the throttling hole, and the throttling hole is arranged on the side wall covered by the filter screen.