CN211573675U - Electrically controlled gas-assisted atomizing injector - Google Patents
Electrically controlled gas-assisted atomizing injector Download PDFInfo
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- CN211573675U CN211573675U CN202020047242.7U CN202020047242U CN211573675U CN 211573675 U CN211573675 U CN 211573675U CN 202020047242 U CN202020047242 U CN 202020047242U CN 211573675 U CN211573675 U CN 211573675U
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Abstract
The utility model relates to an automatically controlled formula gas helps atomizing sprayer, include: the valve comprises a valve rod, a valve seat sleeved on the valve rod, and an armature sleeved on the valve rod, wherein a fixed iron core is fixed on the valve seat, a return spring extends into the fixed iron core, one end of the return spring abuts against the armature, the other end of the return spring abuts against the valve seat, the lower end of the valve rod is tangent to the inner wall of the valve seat to form a first positioning loop, and the first positioning loop; the lower end of the valve rod is provided with a diversion hole, and the distance from the central axis of the diversion hole to the bottom end of the central hole of the valve rod inner core is h; the distance between the central axis of the flow guide hole and the first positioning point coplanar with the central axis is l, and the ratio range of h/l is 0.4-0.6. According to the electric control type gas-assisted atomizing sprayer, the ratio of the distance h from the central axis of the flow guide hole to the bottom end of the hole in the valve rod inner core to the distance l between the central axis of the flow guide hole and the first positioning point coplanar with the central axis is 0.4-0.6, power liquid atomizing spraying can be promoted, the atomizing effect is good, and atomizing is sufficient.
Description
Technical Field
The utility model relates to an ejector especially relates to an automatically controlled formula gas assists atomizing ejector.
Background
The gas-assisted atomizing injector is high in price, namely the manufacturing cost and the assembly cost, particularly the control related to the sealing and the movement of a valve is involved, the fixed iron core and the valve seat of the product in the market are manufactured respectively at present, then the fixed iron core and the valve seat are combined into a valve body assembly through interference press fit by the intermediate transition section, the assembly precision is directly related to the smoothness of the sealing and the reciprocating movement of the valve, and meanwhile, the requirement for manufacturing precision control is high correspondingly.
Secondly, the atomization effect of the general air-assisted atomization injector is poor, so that an electrically controlled air-assisted atomization injector with good atomization effect needs to be provided.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the electrically controlled gas-assisted atomizing injector with good atomizing effect is provided.
The utility model provides a technical scheme that its technical problem adopted is: an electronically controlled gas-assisted atomizing injector comprising: a valve rod with a hollow inner part, a valve seat sleeved on the valve rod, an armature sleeved on the valve rod, a certain iron core fixed on the valve seat, a return spring extending into the fixed iron core and having one end abutting against the armature and the other end abutting against the valve seat,
the lower end of the valve rod is tangent to the inner wall of the valve seat and forms spherical surface attachment, the lower end of the valve rod is tangent to the inner wall of the valve seat to form a first positioning loop, and the first positioning loop comprises a plurality of first positioning points;
the lower end of the valve rod is provided with a ring of diversion holes, and the distance from the central axis of each diversion hole to the bottom end of the central hole of the valve rod inner core is h;
the distance between the central axis of the diversion hole and the first positioning point coplanar with the central axis is l, wherein
The ratio of h/l is in the range of 0.4-0.6.
Preferably, the valve seat and the fixed iron core are fixedly connected and integrally arranged.
Preferably, the electrically controlled gas-assisted atomizing injector further comprises a sealing ring and a sheath;
a first placing ring is arranged on the side wall of the valve seat close to the first positioning loop line, and the sealing ring is clamped in the first placing ring;
the sheath is sleeved at the lower end of the valve seat and is clamped through the extrusion of the sealing ring.
Preferably, the electrically controlled gas-assisted atomizing injector further comprises a sealing ring;
a second placing ring is arranged on the side wall of the valve seat, and the sealing ring is fixed in the second placing ring; wherein
When the sheath is sleeved on the valve seat, the sealing ring is extruded and clamped.
Preferably, an included angle alpha between the central axis of the flow guide hole and the central axis of the valve rod is 60-80 degrees.
Preferably, the electrically controlled gas-assisted atomizing injector further comprises a coil framework, a coil cover and a contact pin fixedly connected with the coil framework, wherein the coil framework, the coil cover and the contact pin are sequentially sleeved from inside to outside, and the contact pin is electrically connected with the coil;
the coil cover is abutted against the upper end of the coil framework, the coil pad is abutted against the coil framework, and the coil framework is sleeved outside the fixed iron core.
Preferably, the electrically controlled gas-assisted atomizing injector further comprises a connecting sleeve;
the connecting sleeve is sleeved on the outer wall of the valve seat and covers the armature inside.
Preferably, l has a length of 3 to 5 mm.
Preferably, the length of h is 1.5 to 3.5 mm.
Preferably, the lower end of the valve seat is integrally provided with a valve head,
the lower end of the valve rod is tangent to the inner wall of the valve head and forms a spherical surface fit, and the lower end of the valve rod is tangent to the inner wall of the valve head to form a first positioning ring line.
The utility model has the advantages that:
according to the electric control type gas-assisted atomizing sprayer, the ratio of the distance h from the central axis of the flow guide hole to the bottom end of the hole in the valve rod inner core to the distance l between the central axis of the flow guide hole and the first positioning point coplanar with the central axis is set to be 0.4-0.6, so that the atomizing spraying of power liquid can be well promoted, the atomizing effect is good, and the atomization is sufficient.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a two-stroke electrically controlled gas-assisted atomizing injector according to the present invention;
FIG. 2 is a schematic view of a partial structure of the lower end of the valve stem and valve seat of the present invention;
FIG. 3 is a schematic view of another partial structure of the lower end of the valve stem and the valve seat of the present invention;
fig. 4 is a partial structural schematic view of an electrically controlled gas-assisted atomizing injector according to the present invention;
in the figure:
the valve rod 1, the first positioning ring line 101 and the diversion hole 102;
the valve comprises a valve seat 2, a valve head 201, an armature 3, a fixed iron core 4, a return spring 5, a sealing ring 6, a sheath 7, a sealing ring 8, a coil framework 9, a coil 10, a coil cover 11, a contact pin 12, a coil cover 13, a coil pad 14 and a connecting sleeve 15.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
It is firstly pointed out that the structural principle of the invention is the same as the invention application with the name of a supersonic gas-assisted atomizing injector, which is applied to the patent number of CN201910412121. X.
As shown in fig. 1 to 4, an electrically controlled gas-assisted atomizing injector includes: the valve comprises a valve rod 1, a valve seat 2, an armature 3, a fixed iron core 4, a return spring 5, a first positioning loop 101 and a second positioning loop 101, wherein the valve rod 1 is hollow inside, the valve seat 2 is sleeved on the valve rod 1, the armature 3 is sleeved on the valve rod 1, the fixed iron core 4 is fixed on the valve seat 2, the return spring 5 extends into the fixed iron core 4, one end of the return spring abuts against the armature 3, the other end of the return spring abuts against the valve seat 2, the lower end of the valve rod 1 is tangent to the inner wall of the valve seat 2 and forms spherical surface fit; the lower end of the valve rod 1 is provided with a ring diversion hole 102, and the distance from the central axis of the diversion hole 102 to the bottom end of a central hole in an inner core of the valve rod 1 is h; the distance between the central axis of the diversion hole 102 and the first positioning point coplanar with the central axis is l, wherein the ratio of h/l ranges from 0.4 to 0.6.
According to the electric control type gas-assisted atomizing sprayer, the ratio of the distance h from the central axis of the flow guide hole 102 to the bottom end of the hole in the inner core of the valve rod 1 to the distance l between the central axis of the flow guide hole 102 and the first positioning point coplanar with the central axis is set to be 0.4-0.6, so that the atomizing spraying of power liquid can be well promoted, the atomizing effect is good, and the atomization is sufficient.
A gap with magnetic attraction is formed on the lower end surface of the armature 3 relative to the upper end surface of the fixed iron core 4; the armature 3, the return spring 5 and the valve rod 1 form a movable component which reciprocates; the stroke of the reciprocating motion of the movable member is precisely controlled by the magnetically attracted gap.
The head of the valve rod 1 and the lower part of the valve seat 2 form a complete switch valve, the switch valve has two states, one is in a closed state, a two-phase flow space is formed inside, the other two-phase flow space is formed outside, a nozzle similar to a Laval nozzle structure is formed by the structure between the head curve of the valve rod 1 and the valve seat 2, supersonic injection is realized, an oil passage is arranged in the middle of the valve rod 1, and the lower end of the valve rod 1 is provided with 4 or more guide holes 102. The valve rod 1 adopts middle and lower part guide and self-guide of a sealing spherical surface, so that the ejector has better sealing performance and more stable movement.
Further, the valve seat 2 and the fixed iron core 4 are fixedly connected and integrally arranged. The fixed iron core 4 and the valve seat 2 are integrated into a part through structural design, so that the manufacturing and the assembly are greatly facilitated, and the stability of the performance of the ejector and the control of the cost are facilitated.
Furthermore, the electrically controlled gas-assisted atomizing injector also comprises a sealing ring 6 and a sheath 7; a first placing ring is arranged on the side wall of the valve seat 2 close to the first positioning loop line 101, and the sealing ring 6 is clamped in the first placing ring; the sheath 7 is sleeved on the lower end of the valve seat 2 and is extruded and clamped through the sealing ring 6.
The electric control type gas-assisted atomizing injector also comprises a sealing ring 8; a second placing ring is arranged on the side wall of the valve seat 2, and the sealing ring 8 is fixed in the second placing ring; when the sheath 7 is sleeved on the valve seat 2, the sealing ring 8 is extruded and clamped.
The sealing ring 8 and the sealing ring 6 are mutually matched for use, so that the sheath 7 can be well positioned after being sleeved, and a good sealing effect can be guaranteed, thereby ensuring that the possibility of water permeation after the sheath 7 is sleeved is greatly reduced.
Further, an included angle α between a central axis of the guide hole 102 and a central axis of the valve rod 1 is 60 ° to 80 °. The length of l is 3-5 mm, and the length of h is 1.5-3.5 mm. Preferably, the included angle is 60 °, l is 3mm, h is 1.5mm, and the included angle is 80 °. The selection of the data is relatively optimal data, the power liquid can be well atomized and sprayed, and the atomization effect is good.
Furthermore, the electrically controlled gas-assisted atomizing injector also comprises a coil framework 9, a coil 10, a coil cover 11 and a contact pin 12 which are sequentially sleeved from inside to outside and fixedly connected with the coil framework 9; the contact pin 12 is electrically connected with the coil 10, the coil cover 13 abuts against the upper end of the coil framework 9, the coil pad 14 abuts against the coil framework 9, and the coil framework 9 is sleeved outside the fixed iron core 4. Thereby forming a complete flux linkage closed loop.
Further, the electrically controlled gas-assisted atomizing injector further comprises a connecting sleeve 15; the connecting sleeve 15 is sleeved on the outer wall of the valve seat 2 and covers the armature 3. The design of the connecting sleeve 15 is beneficial to the improvement of the integral electromagnetic force of the ejector, the response characteristic of the ejector is improved, and meanwhile, the improvement of the ejection pressure is facilitated; in addition, the armature 3 can be used as a motion guide by using the connecting sleeve 15, so that the motion piece moves up and down more smoothly, the spray is more stable, and the whole sealing performance and performance of the ejector are better and excellent.
Further, the lower end of the valve seat 2 is integrally provided with a valve head 201, and the valve head 201 and the valve seat 2 are integrally arranged, so that the number of workpieces is reduced well, and the overall processing cost is reduced.
The lower end of the valve rod 1 is tangent to the inner wall of the valve head 201 and forms a spherical surface fit, and the lower end of the valve rod 1 is tangent to the inner wall of the valve head 201 to form a first positioning loop line 101.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. An electronically controlled gas-assisted atomizing injector comprising: a valve rod with a hollow inner part, a valve seat sleeved on the valve rod, an armature sleeved on the valve rod, a certain iron core fixed on the valve seat, a return spring extending into the fixed iron core and having one end abutting against the armature and the other end abutting against the valve seat,
the lower end of the valve rod is tangent to the inner wall of the valve seat and forms spherical surface attachment, the lower end of the valve rod is tangent to the inner wall of the valve seat to form a first positioning loop, and the first positioning loop comprises a plurality of first positioning points;
the lower end of the valve rod is provided with a ring of diversion holes, and the distance from the central axis of each diversion hole to the bottom end of the central hole of the valve rod inner core is h;
the distance between the central axis of the diversion hole and the first positioning point coplanar with the central axis is l, wherein
The ratio of h/l is in the range of 0.4-0.6.
2. An electrically controlled gas-assisted atomizing injector according to claim 1,
the valve seat and the fixed iron core are fixedly connected and integrally arranged.
3. An electrically controlled gas-assisted atomizing injector according to claim 2,
the electrically controlled gas-assisted atomizing injector further comprises a sealing ring and a sheath;
a first placing ring is arranged on the side wall of the valve seat close to the first positioning loop line, and the sealing ring is clamped in the first placing ring;
the sheath is sleeved at the lower end of the valve seat and is clamped through the extrusion of the sealing ring.
4. An electrically controlled gas-assisted atomizing injector according to claim 3,
the electrically controlled gas-assisted atomizing injector further comprises a sealing ring;
a second placing ring is arranged on the side wall of the valve seat, and the sealing ring is fixed in the second placing ring; wherein
When the sheath is sleeved on the valve seat, the sealing ring is extruded and clamped.
5. An electrically controlled gas-assisted atomizing injector according to claim 1,
and an included angle alpha between the central axis of the flow guide hole and the central axis of the valve rod is 60-80 degrees.
6. An electrically controlled gas-assisted atomizing injector according to claim 1,
the electric control type gas-assisted atomization injector also comprises a coil framework, a coil cover and a contact pin fixedly connected with the coil framework, wherein the coil framework, the coil cover and the contact pin are sequentially sleeved from inside to outside;
the coil cover is abutted against the upper end of the coil framework, the coil pad is abutted against the coil framework, and the coil framework is sleeved outside the fixed iron core.
7. An electrically controlled gas-assisted atomizing injector according to claim 6,
the electrically controlled gas-assisted atomizing injector also comprises a connecting sleeve;
the connecting sleeve is sleeved on the outer wall of the valve seat and covers the armature inside.
8. An electrically controlled gas-assisted atomizing injector according to claim 1,
l is 3-5 mm in length.
9. An electrically controlled gas-assisted atomizing injector according to claim 1,
the length of h is 1.5-3.5 mm.
10. An electrically controlled gas-assisted atomizing injector according to claim 1,
the lower end of the valve seat is integrally provided with a valve head,
the lower end of the valve rod is tangent to the inner wall of the valve head and forms a spherical surface fit, and the lower end of the valve rod is tangent to the inner wall of the valve head to form a first positioning ring line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020047242.7U CN211573675U (en) | 2020-01-09 | 2020-01-09 | Electrically controlled gas-assisted atomizing injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020047242.7U CN211573675U (en) | 2020-01-09 | 2020-01-09 | Electrically controlled gas-assisted atomizing injector |
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| Publication Number | Publication Date |
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| CN211573675U true CN211573675U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020047242.7U Active CN211573675U (en) | 2020-01-09 | 2020-01-09 | Electrically controlled gas-assisted atomizing injector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320695A (en) * | 2021-12-20 | 2022-04-12 | 上海工程技术大学 | Air entrainment jet atomization gas nozzle |
| CN114658579A (en) * | 2022-02-25 | 2022-06-24 | 上海工程技术大学 | Head guided entrained air jet gas nozzle |
-
2020
- 2020-01-09 CN CN202020047242.7U patent/CN211573675U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320695A (en) * | 2021-12-20 | 2022-04-12 | 上海工程技术大学 | Air entrainment jet atomization gas nozzle |
| CN114658579A (en) * | 2022-02-25 | 2022-06-24 | 上海工程技术大学 | Head guided entrained air jet gas nozzle |
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