CN102691157A - Air supply system with airflow accelerator of auxiliary nozzle - Google Patents
Air supply system with airflow accelerator of auxiliary nozzle Download PDFInfo
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- CN102691157A CN102691157A CN2012101919508A CN201210191950A CN102691157A CN 102691157 A CN102691157 A CN 102691157A CN 2012101919508 A CN2012101919508 A CN 2012101919508A CN 201210191950 A CN201210191950 A CN 201210191950A CN 102691157 A CN102691157 A CN 102691157A
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Abstract
The invention provides an air supply system with an airflow accelerator of an auxiliary nozzle, and the air supply system increases the speed of airflow at an outlet of the auxiliary nozzle under the condition of not increasing the air supply pressure and reduces the air consumption of an air jet loom. An airflow accelerator is also arranged between the auxiliary nozzle and an electromagnetic gas valve, the airflow accelerator comprises an accelerator cover, an acceleration nozzle is arranged in the accelerator cover, a nozzle core is arranged in the cavity of the acceleration nozzle, the nozzle core is provided with a through center hole, an inner flow channel is arranged between the acceleration nozzle and the accelerator cover, the inner flow channel is communicated with the nozzle core, and the high pressure airflow respectively passes through the electromagnetic gas valve, the airflow accelerator and the auxiliary nozzle, and is sprayed out from small holes in the head of the auxiliary nozzle.
Description
Technical field
The invention belongs to the air-jet loom field, the concrete pneumatic picking system that relates to relates to a kind of pilot jet air supply system with the air-flow accelerator in particular.
Background technology
900 rev/mins of air-jet loom turn ups, 15 revolutions per seconds, loom per 1 transforms and to take 66.67 milliseconds, arrange 40 along reed width surplus a pilot jet, every pilot jet opens and closes successively, the opening and closing time of every pilot jet has only several milliseconds.About 160 millimeters of distance from the valve to the pilot jet, about 20 meter per seconds of endotracheal air velocity.Air-flow is passed by 160 millimeters, 8 milliseconds of change expenses.This situation does not meet the control requirement of pilot jet, and residual air-flow will influence the switch motion of auxilliary gaseous blast next time in the tracheae.
Leap in the shed open process at weft yarn, the characteristic of weft yarn flight depends primarily on wefting insertion such as auxilliary nozzle and special-shaped reed parts in addition.Air velocity improves the exit flow speed that also promotes pilot jet in the pipe; The speed of auxilliary jet-stream wind is to guarantee that air velocity is not less than the key factor of yarn flying speed; The high pressure draught that comes out from electromagnetic valve; Behind isometrical tracheae, the speed of air-flow and pressure all can drop because of damping to some extent, and the speed that promotes auxilliary gaseous blast can be offset the pipeline damping.
The wefting insertion jet-stream wind is dispersed very fast, just significantly decay after the main injection air-flow continues tens millimeters, and the continuity of weft tracting flow mainly relies on replenishing of auxilliary gaseous blast, and the speed of weft tracting flow can not be lower than the weft yarn flying speed.The speed that present weft yarn leaps the reed groove reaches 120 meter per seconds, and the speed that arrives the auxilliary gaseous blast of weft yarn flight path adjacent domain must meet or exceed 120 meter per seconds at the component of weft yarn heading.High-speed gas gets into the spray chamber of assisting nozzle from pipeline, improves the speed of this strand air-flow, helps to promote the speed of auxilliary gaseous blast.The air flow jetting velocity attenuation is fast, and speed and flow are to guarantee the normal crux key element of wefting insertion
Summary of the invention
For overcoming deficiency of the prior art, the object of the invention purport is that air-jet loom provides the speed that improves the pilot jet exit flow under a kind of condition that does not increase air feed air pressure, reduces the pilot jet air supply system of band air-flow accelerator of the air consumption of air-jet loom.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention realizes through following technical scheme:
A kind of pilot jet air supply system with the air-flow accelerator comprises a pilot jet, and said pilot jet inserts the inner chamber of pilot jet seat; Said pilot jet seat is installed in the hole of support; Said support is fixed on the slay, and the lower end of said pilot jet seat connects high pressure draught through electromagnetic gas valve, also is provided with an air-flow accelerator between said pilot jet and the said electromagnetic gas valve; Said air-flow accelerator comprises an accelerator cover; Be provided with accelerating jet in the said accelerator cover, be provided with a nozzle core in the said accelerating jet, said nozzle core is provided with the centre bore of a perforation; And leave inner flow passage between said accelerating jet and the said accelerator cover; Said inner flow passage and said nozzle core UNICOM, said high pressure draught passes through said electromagnetic gas valve, air-flow accelerator and pilot jet successively, from the aperture ejection of the head of said pilot jet.Design principle of the present invention is following: air-flow gets into the air-flow accelerator from two strands of passages, and main air is the centre bore entering of air-flow accelerator from nozzle core, and secondary air flow gets into from the inner flow passage of accelerator cover with accelerating jet.
High pressure draught is through the inner flow passage of accelerator cover with accelerating jet, and the nozzle core of flowing through utilizes the poor of air feed pressure and ambient air pressure; Produce the high velocity jet air-flow; Smallest cross-sectional in the slit is in critical condition so, and the air velocity of smallest cross-sectional keeps subsonic speed, and subsonic flow gets into pilot jet seat inner chamber; This strand airflow injection is the air-flow that nozzle core gets into from centre bore, and air-flow quickens greatly like this.High-speed gas gets into the spray chamber of assisting nozzle from the air-flow accelerator through auxilliary nozzle carrier inner chamber, has promoted from the speed of nozzle spout ejection air-flow.
Beneficial effect of the present invention is following:
In the gas circuit from the electromagnetic gas valve to the pilot jet; Be with air-flow accelerator of the present invention; Be used to improve endotracheal air velocity; Air-flow can shorten through the time of tracheae, and the pilot jet air supply system of band air-flow accelerator of the present invention like this can improve the speed of pilot jet exit flow under the condition that does not increase air feed air pressure, reduced the air consumption of air-jet loom.Through improving the air velocity that gets into pilot jet, for air-jet loom provides a kind of device that improves auxilliary gaseous blast speed.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. specify as after.The specific embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
The pilot jet air supply system of Fig. 1 for using in the prior art.
Fig. 2 is the structural representation of an embodiment of the pilot jet air supply system of band air-flow accelerator of the present invention.
Fig. 3 is the structural representation of another embodiment of the pilot jet air supply system of band air-flow accelerator of the present invention.
Fig. 4 is the structure of air-flow accelerator of the present invention and at the sketch map of the installation site of pilot jet seat inner chamber;
Fig. 5 is the air flow direction sketch map in the air-flow accelerator of the present invention.
Fig. 6 is the installation site structural representation of pilot jet and pilot jet seat.
Label declaration among the figure: 1, pilot jet, 2, the pilot jet seat, 3, support, 4, electromagnetic gas valve, 5, the air-flow accelerator, 501, the accelerator cover, 502, accelerating jet, 503, nozzle core, 504, inner flow passage.
The specific embodiment
Below with reference to accompanying drawing and combine embodiment, specify the present invention.
Embodiment 1:
Referring to Fig. 2, Fig. 5 and shown in Figure 6, a kind of pilot jet air supply system with the air-flow accelerator comprises a pilot jet 1; Said pilot jet 1 inserts the inner chamber of pilot jet seat 2, and said pilot jet seat 2 is installed in the hole of support 3, and said support 3 is fixed on the slay; The lower end of said pilot jet seat 2 connects high pressure draught through electromagnetic gas valve 4; Also be provided with an air-flow accelerator 5 between said pilot jet 1 and the said electromagnetic gas valve 4, said air-flow accelerator 5 comprises accelerator cover 501, is provided with accelerating jet 502 in the said accelerator cover 501; It in the said accelerating jet 502 nozzle core 503; Said nozzle core 503 is the centre bore that connects, and leaves inner flow passage 504 between said accelerating jet 502 and the said accelerator cover 501, said inner flow passage 504 and said nozzle core 503 UNICOMs; Said high pressure draught passes through said electromagnetic gas valve 4, air-flow accelerator 5 and pilot jet 1 successively, from the aperture ejection of the head of said pilot jet 1.
Further, said air-flow accelerator 5 two ends are connected with said pilot jet 1 and said electromagnetic gas valve 4 through tracheae respectively.
Embodiment 2:
Referring to Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, a kind of pilot jet air supply system with the air-flow accelerator comprises a pilot jet 1; Said pilot jet 1 inserts the inner chamber of pilot jet seat 2, and said pilot jet seat 2 is installed in the hole of support 3, and said support 3 is fixed on the slay; The lower end of said pilot jet seat 2 connects high pressure draught through electromagnetic gas valve 4; Also be provided with an air-flow accelerator 5 between said pilot jet 1 and the said electromagnetic gas valve 4, said air-flow accelerator 5 comprises accelerator cover 501, is provided with accelerating jet 502 in the said accelerator cover 501; It in the said accelerating jet 502 nozzle core 503; Said nozzle core 503 is the centre bore that connects, and leaves inner flow passage 504 between said accelerating jet 502 and the said accelerator cover 501, said inner flow passage 504 and said nozzle core 503 UNICOMs; Said high pressure draught passes through said electromagnetic gas valve 4, air-flow accelerator 5, pilot jet seat 2 and pilot jet 1 successively, from the aperture ejection of the head of said pilot jet 1.
Further, said air-flow accelerator 5 is installed in the inner chamber of said pilot jet seat 2, and directly is connected conducting through said pilot jet seat 2 with said pilot jet 1.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. be with the pilot jet air supply system of air-flow accelerator; Comprise a pilot jet (1); Said pilot jet (1) inserts the inner chamber of pilot jet seat (2), and said pilot jet seat (2) is installed in the hole of support (3), and said support (3) is fixed on the slay; The lower end of said pilot jet seat (2) connects high pressure draught through electromagnetic gas valve (4); It is characterized in that: also be provided with an air-flow accelerator (5) between said pilot jet (1) and the said electromagnetic gas valve (4), said air-flow accelerator (5) comprises an accelerator cover (501), is provided with accelerating jet (502) in the said accelerator cover (501); Be provided with a nozzle core (503) in the said accelerating jet (502); Said nozzle core (503) is provided with the centre bore of a perforation, and leaves inner flow passage (504) between said accelerating jet (502) and the said accelerator cover (501), said inner flow passage (504) and said nozzle core (503) UNICOM; Said high pressure draught passes through said electromagnetic gas valve (4), air-flow accelerator (5) and pilot jet (1) successively, from the aperture ejection of the head of said pilot jet (1).
2. the pilot jet air supply system of band air-flow accelerator according to claim 1 is characterized in that: said air-flow accelerator (5) two ends are connected with said pilot jet (1) and said electromagnetic gas valve (4) through tracheae respectively.
3. the pilot jet air supply system of band air-flow accelerator according to claim 1; It is characterized in that: said air-flow accelerator (5) is installed in the inner chamber of said pilot jet seat (2), and directly is connected conducting through said pilot jet seat (2) with said pilot jet (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101919508A CN102691157A (en) | 2012-06-12 | 2012-06-12 | Air supply system with airflow accelerator of auxiliary nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101919508A CN102691157A (en) | 2012-06-12 | 2012-06-12 | Air supply system with airflow accelerator of auxiliary nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102691157A true CN102691157A (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101919508A Pending CN102691157A (en) | 2012-06-12 | 2012-06-12 | Air supply system with airflow accelerator of auxiliary nozzle |
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| Country | Link |
|---|---|
| CN (1) | CN102691157A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215732A (en) * | 2013-05-07 | 2013-07-24 | 江苏万工科技集团有限公司 | Auxiliary jet air supply system with exhaust valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0034576A1 (en) * | 1980-02-18 | 1981-08-26 | Tsudakoma Kogyo Kabushiki Kaisha | Method for supplemental fluid ejection on a shuttleless loom and an auxiliary nozzle used therefor |
| EP0418948A1 (en) * | 1989-09-19 | 1991-03-27 | Picanol N.V. | Blow device for weft threads in weaving machines |
| DE29917872U1 (en) * | 1999-10-09 | 2000-01-20 | Dornier Gmbh Lindauer | Weft insertion element, in particular relay nozzle for an air jet loom |
| CN202107855U (en) * | 2011-06-20 | 2012-01-11 | 苏州大学 | Jet loom main nozzle used under a low air-supply pressure |
| CN102443937A (en) * | 2011-09-26 | 2012-05-09 | 江苏万工科技集团有限公司 | Auxiliary nozzle mechanism |
| CN202717930U (en) * | 2012-06-12 | 2013-02-06 | 江苏万工科技集团有限公司 | Auxiliary nozzle air supply system with airflow accelerator |
-
2012
- 2012-06-12 CN CN2012101919508A patent/CN102691157A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0034576A1 (en) * | 1980-02-18 | 1981-08-26 | Tsudakoma Kogyo Kabushiki Kaisha | Method for supplemental fluid ejection on a shuttleless loom and an auxiliary nozzle used therefor |
| EP0418948A1 (en) * | 1989-09-19 | 1991-03-27 | Picanol N.V. | Blow device for weft threads in weaving machines |
| DE29917872U1 (en) * | 1999-10-09 | 2000-01-20 | Dornier Gmbh Lindauer | Weft insertion element, in particular relay nozzle for an air jet loom |
| CN202107855U (en) * | 2011-06-20 | 2012-01-11 | 苏州大学 | Jet loom main nozzle used under a low air-supply pressure |
| CN102443937A (en) * | 2011-09-26 | 2012-05-09 | 江苏万工科技集团有限公司 | Auxiliary nozzle mechanism |
| CN202717930U (en) * | 2012-06-12 | 2013-02-06 | 江苏万工科技集团有限公司 | Auxiliary nozzle air supply system with airflow accelerator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215732A (en) * | 2013-05-07 | 2013-07-24 | 江苏万工科技集团有限公司 | Auxiliary jet air supply system with exhaust valve |
| CN103215732B (en) * | 2013-05-07 | 2014-04-30 | 江苏万工科技集团有限公司 | Auxiliary jet air supply system with exhaust valve |
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Application publication date: 20120926 |