阅读说明：本技术 一种大流量共轨喷油器喷油嘴用针阀、喷油嘴偶件及其工作方法 (Needle valve for large-flow common rail oil injector oil injection nozzle, oil injection nozzle matching part and working method of oil injection nozzle matching part ) 是由 陈金鹤 王强 韩胜武 于 2021-08-26 设计创作，主要内容包括：本发明公开了一种大流量共轨喷油器喷油嘴用针阀、喷油嘴偶件及其工作方法,包括阀座,所述阀座的一端表面设有空腔,所述空腔的底部设有螺纹孔,所述螺纹孔的底部设有导向孔,所述导向孔的一端表面固定连接有球形喷头,所述导向杆的侧面滑动安装有针阀,所述针阀的一端表面设有球形头,所述球形头的表面顶紧连接于球形喷头的侧面,所述针阀的另一端表面固定连接有挡块,所述挡块的表面设有连接头,所述挡块的侧面位于空腔的内部中间位置,所述螺纹孔的侧面一端螺纹连接有螺纹环,所述螺纹环的表面固定连接有定位筒,所述定位筒的侧面固定连接有支撑弹簧,这样能够大大提高生产使用的便利性和稳定性,保证控制使用的安全精确度。(The invention discloses a needle valve for a large-flow common rail oil sprayer, an oil spray nozzle matching part and a working method thereof, and the needle valve comprises a valve seat, wherein a cavity is arranged on one end surface of the valve seat, a threaded hole is arranged at the bottom of the cavity, a guide hole is arranged at the bottom of the threaded hole, a spherical spray nozzle is fixedly connected to one end surface of the guide hole, a needle valve is slidably installed on the side surface of a guide rod, a spherical head is arranged on one end surface of the needle valve, the surface of the spherical head is tightly connected to the side surface of the spherical spray nozzle in a propping manner, a stop block is fixedly connected to the other end surface of the needle valve, a connector is arranged on the surface of the stop block, the side surface of the stop block is positioned in the middle position inside the cavity, a threaded ring is connected to one end of the side surface of the threaded hole in a threaded manner, a positioning cylinder is fixedly connected to the surface of the threaded ring, and a supporting spring is fixedly connected to the side surface of the positioning cylinder, therefore, the convenience and the stability of production and use can be greatly improved, and the safety and the accuracy of control and use are ensured.)

1. A needle valve for a fuel injection nozzle of a large-flow common rail fuel injector, a fuel injection nozzle matching part and a working method thereof comprise a valve seat (1), and are characterized in that: the utility model discloses a valve seat, including disk seat (1), the one end surface of disk seat (1) is equipped with cavity (11), the bottom of cavity (11) is equipped with screw hole (12), the bottom of screw hole (12) is equipped with guiding hole (13), the one end fixed surface of guiding hole (13) is connected with ball sprinkler (14), the side slidable mounting of guide bar (13) has needle valve (15), the one end surface of needle valve (15) is equipped with ball head (16), the surface top of ball head (16) tightly connects in the side of ball sprinkler (14), the other end fixed surface of needle valve (15) is connected with dog (17), the surface of dog (17) is equipped with connector (18), the side of dog (17) is located the inside intermediate position of cavity (11), the side one end threaded connection of screw hole (12) has screw ring (2), the fixed surface of screw ring (2) is connected with a location section of thick bamboo (21), the side fixedly connected with supporting spring (23) of a location section of thick bamboo (21), the side of a location section of thick bamboo (21) and supporting spring (23) all slides and cup joints in the one end surface of needle valve (15), a side surface of disk seat (1) is equipped with inclined hole (24), the one end surface of inclined hole (24) is equipped with vertical hole (25).

2. The needle valve and the nozzle matching part for the large-flow common rail injector nozzle according to claim 1, characterized in that: the positioning barrel is characterized in that an outer hexagonal head (22) is arranged on the surface of one end of the positioning barrel (21), and the surface of the outer hexagonal head (22) is located on the side face of one end of the cavity (11).

3. The needle valve and the nozzle matching part for the large-flow common rail injector nozzle according to claim 1, characterized in that: the side of guiding hole (13) is equipped with vertical groove (31), angle evenly distributed such as vertical groove (31) is in the side of needle valve (15).

4. The needle valve and the nozzle matching part for the large-flow common rail injector nozzle according to claim 1, characterized in that: a welding head (26) is fixedly welded on the surface of one end of the inclined hole (24), and the surface of the welding head (26) is fixedly welded on one side surface of the valve seat (1).

5. The needle valve and the nozzle matching part for the large-flow common rail injector nozzle according to claim 1, characterized in that: the one end fixed surface of disk seat (1) installs mount pad (27), the one end fixed surface of mount pad (27) installs regulator (28), the one end surface connection of regulator (28) is in the surface of connector (18).

6. The needle valve and the nozzle matching part for the large-flow common rail injector nozzle according to claim 5 are characterized in that: the surface of one side of mount pad (27) is fixed with double-deck sealing ring (29), the surface of double-deck sealing ring (29) compresses tightly and connects in the one end surface of disk seat (1).

7. The needle valve and the nozzle matching part for the large-flow common rail injector nozzle according to claim 6, characterized in that: one side surface of the double-layer sealing ring (29) is positioned at the side position of the cavity (11), and the other side surface of the double-layer sealing ring (29) is positioned at the side surface of the vertical hole (25).

8. The needle valve and the nozzle matching part for the large-flow common rail injector nozzle according to claim 5 are characterized in that: the surface of one side of mount pad (27) is equipped with right angle mounting hole (3), the one end surface butt joint in the one end surface of vertical hole (25) of right angle mounting hole (3).

9. The working method of the needle valve for the fuel injection nozzle of the high-flow common rail fuel injector according to claim 1, characterized in that: the working method comprises the following steps:

s1, sleeving the supporting spring and the positioning barrel on the surface of the needle valve, and then inserting the supporting spring and the positioning barrel into the cavity;

s2, positioning the bottom of the needle valve in a guide hole, connecting an outer hexagon with a wrench to drive a positioning barrel to rotate, connecting a thread ring to a fixed position in a threaded hole through threads, and performing auxiliary supporting and positioning on the needle valve;

s3, mounting the mounting seat on the valve seat through screws, connecting the right-angle mounting hole to the vertical hole, mounting the connector through the regulator, and tightly pressing the double-layer sealing ring to position after screwing to complete mounting;

s4, mounting the valve seat at an oil injection position, and butting the right-angle mounting hole with a high-pressure oil pump pipeline to supply high-pressure oil to enter a vertical groove and a guide hole;

s5, the regulator is combined with the connector to drive the needle valve to slide upwards, and the spherical head is separated from the surface of the spherical nozzle to form a gap;

s6, allowing high-pressure oil to enter the spherical spray head through the vertical groove, uniformly spraying the high-pressure oil from the spray holes, and controlling the needle valve to reset downwards again to complete an oil spraying cycle;

and S7, continuously controlling the needle valve to reciprocate, performing cyclic adjustment, controlling oil injection and working.

Technical Field

The invention relates to the field of needle valves, in particular to a needle valve for a large-flow common rail oil sprayer, an oil sprayer matching part and a working method of the needle valve and the oil sprayer matching part.

Background

In the combined use process of the engine, the needle valve and the matched matching part need to be installed for combination, and then the oil injection pressure and the oil injection quantity are controlled, so that the working state of the engine can be conveniently and accurately controlled.

But current needle valve idol spare structure is direct inside being connected to the disk seat with the needle valve supporting more, and the precision requirement to the inside hole is higher like this, is unfavorable for processing production, also can not be to needle valve auxiliary stay when aggregate erection moreover, influences the precision of location installation, is unfavorable for sliding from top to bottom and regulation control, and oil circuit hookup location also does not make things convenient for the combined use simultaneously, interferes the dislocation easily, is unfavorable for control operation, remains to be improved.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a needle valve for a large-flow common rail oil sprayer, an oil sprayer matching part and a working method thereof.

In order to solve the above problems, the present invention adopts the following technical solutions.

A needle valve for a fuel spray nozzle of a large-flow common rail fuel injector, a fuel spray nozzle matching part and a working method of the fuel spray nozzle matching part comprise a valve seat, wherein a cavity is arranged on one end surface of the valve seat, a threaded hole is formed in the bottom of the cavity, a guide hole is formed in the bottom of the threaded hole, a spherical spray nozzle is fixedly connected to one end surface of the guide hole, the needle valve is slidably mounted on the side surface of a guide rod, a spherical head is arranged on one end surface of the needle valve, the surface of the spherical head is tightly connected to the side surface of the spherical spray nozzle in an abutting mode, a stop block is fixedly connected to the other end surface of the needle valve, a connector is arranged on the surface of the stop block, the side surface of the stop block is located in the middle position inside the cavity, a threaded ring is in threaded connection with one end of the side surface of the threaded hole, a positioning cylinder is fixedly connected to the surface of the threaded ring, a supporting spring is fixedly connected to the side surface of the positioning cylinder and the supporting spring are both slidably sleeved on one end surface of the needle valve, the valve seat is characterized in that an inclined hole is formed in the surface of one side of the valve seat, and a vertical hole is formed in the surface of one end of the inclined hole.

Furthermore, the one end surface of a location section of thick bamboo is equipped with outer hexagonal, outer hexagonal surface is located the one end side of cavity, sets up outer hexagonal through a location section of thick bamboo surface, does benefit to connect the spanner and rotates to screw up, easy to assemble location.

Further, the side of guiding hole is equipped with vertical groove, vertical groove equidistance evenly distributed in the side of needle valve sets up vertical groove through the guiding hole, can the side oil feed, avoids interfering, does benefit to the control and uses.

Furthermore, a welding head is fixedly welded on the surface of one end of the inclined hole, the surface of the welding head is fixedly welded on the surface of one side of the valve seat, the welding head is connected through the inclined hole, the welding head can be welded and sealed after drilling, leakage is avoided, interference is avoided, and production and use are facilitated.

Further, the one end fixed surface of disk seat installs the mount pad, the one end fixed surface of mount pad installs the regulator, the one end fixed surface of regulator connects in the surface of connector, connects the regulator through the mount pad, conveniently controls the needle valve action, does benefit to the regulation and uses.

Further, one side fixed surface of mount pad is connected with double-deck sealing ring, the surface of double-deck sealing ring compresses tightly to be connected in the one end surface of disk seat, through installing double-deck sealing ring, can guarantee to connect the leakproofness of face, avoids leaking.

Furthermore, one side surface of the double-layer sealing ring is positioned on the side surface of the cavity, and the other side surface of the double-layer sealing ring is positioned on the side surface of the vertical hole.

Furthermore, a right-angle mounting hole is formed in one side surface of the mounting seat, one end surface of the right-angle mounting hole is in butt joint with one end surface of the vertical hole, and the right-angle mounting hole is formed, so that an oil way can be combined through a side butt joint pipeline, interference is avoided, and oil injection is facilitated.

Further, the working method comprises the following steps:

s1, sleeving the supporting spring and the positioning barrel on the surface of the needle valve, and then inserting the supporting spring and the positioning barrel into the cavity;

s2, positioning the bottom of the needle valve in a guide hole, connecting an outer hexagon with a wrench to drive a positioning barrel to rotate, connecting a thread ring to a fixed position in a threaded hole through threads, and performing auxiliary supporting and positioning on the needle valve;

s3, mounting the mounting seat on the valve seat through screws, connecting the right-angle mounting hole to the vertical hole, mounting the connector through the regulator, and tightly pressing the double-layer sealing ring to position after screwing to complete mounting;

s4, mounting the valve seat at an oil injection position, and butting the right-angle mounting hole with a high-pressure oil pump pipeline to supply high-pressure oil to enter a vertical groove and a guide hole;

s5, the regulator is combined with the connector to drive the needle valve to slide upwards, and the spherical head is separated from the surface of the spherical nozzle to form a gap;

s6, allowing high-pressure oil to enter the spherical spray head through the vertical groove, uniformly spraying the high-pressure oil from the spray holes, and controlling the needle valve to reset downwards again to complete an oil spraying cycle;

and S7, continuously controlling the needle valve to reciprocate, performing cyclic adjustment, controlling oil injection and working.

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through setting up cavity and screw hole inside the disk seat, combines the guiding hole to connect spherical shower nozzle, can the slidable mounting needle valve carry out regulation and control, guarantees the fineness, connects supporting spring through a screw thread installation location section of thick bamboo simultaneously, can accurately counterpoint and support the needle valve, avoids the slope dislocation, improves the stability of vertical control to the side sets up inclined hole and vertical hole, does benefit to the production and processing, avoids interfering, does benefit to the switch-on oil circuit.

(2) The outer hexagon is arranged on the surface of the positioning barrel, so that the connection wrench is convenient to rotate and screw down, and the installation and the positioning are convenient.

(3) Set up vertical groove through the guiding hole, can the side oil feed, avoid interfering, do benefit to control and use.

(4) The welding head is connected through the inclined hole, so that the welding head can be welded and sealed after drilling processing, leakage is avoided, interference is avoided, and production and use are facilitated.

(5) The regulator is connected through the mounting seat, conveniently controls the action of needle valve, does benefit to and adjusts the use.

(6) Through the installation double-deck sealing ring, can guarantee the leakproofness of connecting the face, avoid leaking.

(7) Through setting up the right angle mounting hole, can make up the oil circuit by the butt joint pipeline in the side, avoid interfering, make things convenient for the oil spout to use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a positioning cylinder of the present invention;

FIG. 3 is an enlarged view of the vertical hole junction of FIG. 1 according to the present invention at point A;

FIG. 4 is a cross-sectional schematic view of the valve seat and needle valve connection of the present invention;

FIG. 5 is a partial junction view of the mount connection of the present invention.

The reference numbers in the figures illustrate:

1 valve seat, 11 cavities, 12 threaded holes, 13 guide holes, 14 spherical spray heads, 15 needle valves, 16 spherical heads, 17 stoppers, 18 connectors, 2 threaded rings, 21 positioning cylinders, 22 outer hexagons, 23 supporting springs, 24 inclined holes, 25 vertical holes, 26 welding heads, 27 mounting seats, 28 regulators, 29 double-layer sealing rings, 3 right-angle mounting holes and 31 vertical grooves.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Referring to fig. 1-5, a needle valve for a fuel injector of a large flow common rail fuel injector, a fuel injector matching part and a working method thereof, including a valve seat 1, referring to fig. 1, 2 and 3, a cavity 11 is formed on one end surface of the valve seat 1, a threaded hole 12 is formed at the bottom of the cavity 11, a guide hole 13 is formed at the bottom of the threaded hole 12, a ball injector 14 is fixedly connected to one end surface of the guide hole 13, fuel can be injected from the bottom, the oil pressure is ensured to be uniform, the use of the fuel injector is facilitated, a needle valve 15 is slidably mounted on a side surface of the guide rod 13, a ball head 16 is arranged on one end surface of the needle valve 15, the ball head 16 fits with the side surface of the ball injector 14, the fuel injection can be tightly pressed and sealed, the fuel injection is opened after the fuel injection is released, the control is facilitated, the precise adjustment is facilitated, the surface of the ball head 16 tightly abuts against the side surface of the ball injector 14, a stopper 17 is fixedly connected to the other end surface of the stopper 17, a connector 18 is arranged on the surface of the stopper 17, the side of dog 17 is located the inside intermediate position of cavity 11, side one end threaded connection of screw hole 12 has screw ring 2, the fixed surface of screw ring 2 is connected with a location section of thick bamboo 21, the side fixedly connected with supporting spring 23 of a location section of thick bamboo 21, can push up and upwards reset, guarantee the stability of switching, do benefit to the regulation and use, the equal slip of side of a location section of thick bamboo 21 and supporting spring 23 cup joints in the one end surface of needle valve 15, a side surface of disk seat 1 is equipped with inclined hole 24, the one end surface of inclined hole 24 is equipped with vertical hole 25, can process out inclined hole 24 from the side drilling and dock inside guiding hole 13, then process out vertical hole 25 from the upper end drilling, and then form the oil circuit, avoid interfering the dislocation, do benefit to components of a whole that can function independently processing, it is high-efficient stable.

Please refer to fig. 2, fig. 3 and fig. 4, an end surface of the positioning cylinder 21 is provided with an outer hexagon 22, the surface of the outer hexagon 22 is located on a side surface of one end of the cavity 11, the outer hexagon 22 is arranged on the surface of the positioning cylinder 21, which is beneficial to connection of wrench rotation and tightening, installation and positioning are facilitated, a side surface of the guide hole 13 is provided with a vertical groove 31, the vertical groove 31 is uniformly distributed on a side surface of the needle valve 15 at equal angles, the vertical groove 31 is arranged through the guide hole 13, oil can be fed from the side surface, interference is avoided, use in control is facilitated, a welding head 26 is welded on one end surface of the inclined hole 24, the surface of the welding head 26 is fixedly welded on a side surface of the valve seat 1, the welding head 26 is connected through the inclined hole 24, welding and sealing can be performed after drilling, leakage is avoided, interference is avoided, and production and use is facilitated.

Please refer to fig. 1 and 5, a mounting seat 27 is fixedly mounted on a surface of one end of the valve seat 1, a regulator 28 is fixedly mounted on a surface of one end of the mounting seat 27, a surface of one end of the regulator 28 is connected to the surface of the connector 18, the regulator 28 is connected through the mounting seat 27, it is convenient to control the action of the needle valve, it is beneficial to adjusting and using, a double-layer sealing ring 29 is fixedly connected to a surface of one side of the mounting seat 27, the surface of the double-layer sealing ring 29 is tightly pressed and connected to a surface of one end of the valve seat 1, by mounting the double-layer sealing ring 29, the sealing performance of the connecting surface can be ensured, leakage is avoided, a right-angle mounting hole 3 is formed in a surface of one side of the mounting seat 27, a surface of one end of the right-angle mounting hole 3 is butted to a surface of one end of the vertical hole 25, by setting the right-angle mounting hole 3, an oil path can be combined by butting a pipeline from the side, interference is avoided, and oil spraying is convenient to use.

The working method comprises the following steps:

s1, sleeving the supporting spring and the positioning barrel on the surface of the needle valve, and then inserting the supporting spring and the positioning barrel into the cavity;

s2, positioning the bottom of the needle valve in a guide hole, connecting an outer hexagon with a wrench to drive a positioning barrel to rotate, connecting a thread ring to a fixed position in a threaded hole through threads, and performing auxiliary supporting and positioning on the needle valve;

s3, mounting the mounting seat on the valve seat through screws, connecting the right-angle mounting hole to the vertical hole, mounting the connector through the regulator, and tightly pressing the double-layer sealing ring to position after screwing to complete mounting;

s4, mounting the valve seat at an oil injection position, and butting the right-angle mounting hole with a high-pressure oil pump pipeline to supply high-pressure oil to enter a vertical groove and a guide hole;

s5, the regulator is combined with the connector to drive the needle valve to slide upwards, and the spherical head is separated from the surface of the spherical nozzle to form a gap;

s6, allowing high-pressure oil to enter the spherical spray head through the vertical groove, uniformly spraying the high-pressure oil from the spray holes, and controlling the needle valve to reset downwards again to complete an oil spraying cycle;

and S7, continuously controlling the needle valve to reciprocate, performing cyclic adjustment, controlling oil injection and working.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.