CN102963728B - A kind of pulse air drives the powder conveying device of Venturi powder pump - Google Patents
A kind of pulse air drives the powder conveying device of Venturi powder pump Download PDFInfo
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- CN102963728B CN102963728B CN201210483365.5A CN201210483365A CN102963728B CN 102963728 B CN102963728 B CN 102963728B CN 201210483365 A CN201210483365 A CN 201210483365A CN 102963728 B CN102963728 B CN 102963728B
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Abstract
The present invention relates to the powder conveying device that a kind of pulse air drives Venturi powder pump, comprise powder bucket, fluidized plate, powder absorbing pipe, Venturi powder pump and flour extraction pipe, this fluidized plate to be located in powder bucket and near powder bottom of the barrel, fluid air chamber is provided with between fluidized plate and powder bottom of the barrel, this powder absorbing pipe one end extend into inside powder bucket with powder bucket cavity connects, the other end connects the powder input port of Venturi powder pump; Flour extraction pipe one end is connected to the powder output port of Venturi powder pump; Also comprise pulse air flow generator, the mouth of pulse air flow generator connects the powder conveying gas entrance of Venturi powder pump, the pulse air that pulse air flow generator produces forms an oscillating air flow and can fully mix the powder inside Venturi powder pump and air and carry, its reliable operation, not easily block, that can reduce dust gun tells powder phenomenon, improves the effect of dusting, improving SNR, can reduce the number of times of maintenance.
Description
1, technical field
The present invention relates to the powder conveying device that a kind of pulse air drives Venturi powder pump.
2, background technology
As shown in Figure 1, the powder conveying device of existing use Venturi powder pump comprises: pressurized air to the rheomorphism of fluidisation air chamber 12 through fluidized plate 3, makes the powder 2 in powder bucket 1 be in fluidized state by powder bucket fluidized gas entrance 11.The powder conveying gas entrance 51 of Venturi powder pump 5 passes into the air-flow formation Venturi effect that continuous print stablizes air pressure, powder 2 in powder bucket 1 flow into Venturi powder pump 5 by powder absorbing pipe 4, the atomization gas input port 52 of Venturi powder pump 5 passes into atomization gas, makes powder 2 and atomization gas be thoroughly mixed to form primary mixture and flows out from flour extraction pipe 7 under the promotion of powder feeding air-flow.
There is following shortcoming in its structure: as shown in Figure 2, the powder conveying gas entrance 51 of Venturi powder pump 5 passes into the stable air-flow of continuous print, its flow is stable, but the fluctuation of its powder powder outlet quantity is comparatively large, unstable, as shown in Figure 3, powder 2 is easily deposited on flour extraction pipe 7 tube wall bottom, cause dust gun to tell powder when dusting, powder conveying easily blocking, the serious powder that causes can not be carried; Fault rate increases, job insecurity.
3, summary of the invention
The object of the present invention is to provide a kind of pulse air to drive the powder conveying device of Venturi powder pump, its reliable operation, not easily blocks, and that can reduce dust gun tells powder phenomenon, and improve the effect of dusting, improving SNR, can reduce the number of times of maintenance.
The present invention by following technical solution scheme realizes:
Pulse air drives a powder conveying device for Venturi powder pump, comprises a powder bucket, and this powder bucket has one in order to the cavity of splendid attire powder, and powder bottom of the barrel offers fluid conductance entrance; Fluid plate, this fluidized plate is located in powder bucket and near powder bottom of the barrel, be provided with fluid air chamber between fluidized plate and powder bottom of the barrel, described fluidized gas introducing port is communicated with this fluidisation air chamber; One powder absorbing pipe, this powder absorbing pipe one end extend into inside powder bucket with powder bucket cavity connects, the other end connects the powder input port of Venturi powder pump; One Venturi powder pump, have powder conveying gas entrance, atomization gas input port, powder input port and powder output port, atomization gas input port passes into atomization gas; One flour extraction pipe, its one end is connected to the powder output port of Venturi powder pump; It is characterized in that: also comprise pulse air flow generator, the mouth of pulse air flow generator connects the powder conveying gas entrance of Venturi powder pump, and the pulse air that pulse air flow generator produces forms an oscillating air flow and can fully mix the powder inside Venturi powder pump and air and carry.
The frequency of the air pulse that pulse air flow generator described above produces is in 1 Hz ~ 1000Hz scope.
The end of flour extraction pipe described above connects dust gun.
Between the mouth of pulse air flow generator described above and Venturi powder pump, second switch valve is set.
Atomization gas input port described above connects atomization gas producer by the first switch valve.
First switch valve described above, second switch valve are electrically-controlled valve and connect master controller, and on-off signal is delivered to master controller by sensor by dust gun, and master controller controls the first switch valve, the unlatching of second switch valve or closedown.
Master controller described above is PLC.
The present invention compared with prior art tool has the following advantages: 1, the mouth of pulse air flow generator connects the powder conveying gas entrance of Venturi powder pump, and the pulse air that pulse air flow generator produces forms an oscillating air flow and more effectively can mix the powder inside Venturi powder pump and air; 2, the pulse air that pulse air flow generator produces forms oscillating air flow can have a continuously impact effect to powder, makes not easily to block in the course of conveying of powder, reliable operation, and reduce dust gun tell powder phenomenon, improve the effect of dusting, improving SNR, can reduce the number of times of maintenance.
4, accompanying drawing illustrates:
Fig. 1 is existing powder conveying device structural representation.
Fig. 2 is the powder delivery air spirogram of Venturi powder pump in existing powder conveying device;
Fig. 3 is the powder powder delivery spirogram of Venturi powder pump in existing powder conveying device;
Fig. 4 is the structural representation of a kind of state of invention;
Fig. 5 is the powder delivery air spirogram of the Venturi powder pump of invention;
Fig. 6 is the powder powder delivery spirogram of Venturi powder pump perfect condition in invention;
The powder powder delivery spirogram of the actual test mode of Venturi powder pump in Fig. 7 invention;
Fig. 8 is the functional-block diagram of invention.
5, detailed description of the invention:
As shown in Figure 4, a kind of pulse air drives the powder conveying device of Venturi powder pump, comprises a powder bucket 1, and this powder bucket 1 has one in order to the cavity of splendid attire powder 2, offers fluid conductance entrance 12 bottom powder bucket 1, fluid plate 3, this fluidized plate 3 to be located in powder bucket 1 and bottom powder bucket 1, and be provided with fluid air chamber 11 between bottom fluidized plate 3 and powder bucket 1, described fluidized gas introducing port 12 is communicated with this fluidisation air chamber, one powder absorbing pipe 4, this powder absorbing pipe 4 one end extend into inside powder bucket 1 with powder bucket cavity connects, the other end connects the powder input port 53 of Venturi powder pump 5, one Venturi powder pump 5, have powder conveying gas entrance 51, atomization gas input port 52, powder input port 53 and powder output port 54, atomization gas input port 52 passes into atomization gas, one flour extraction pipe 7, its one end is connected to the powder output port 54 of Venturi powder pump 5, also comprise pulse air flow generator 8 in addition, the mouth of pulse air flow generator 8 connects the powder conveying gas entrance 51 of Venturi powder pump 5, the pulse air that pulse air flow generator 8 produces forms an oscillating air flow and can fully mix the powder inside Venturi powder pump 5 and air and carry, the frequency of the air pulse that pulse air flow generator 8 produces is in 1 Hz ~ 1000Hz scope, the end of flour extraction pipe 7 connects dust gun 6, between the mouth of pulse air flow generator 8 and Venturi powder pump 5, second switch valve 81 is set, atomization gas input port 52 connects atomization gas producer 9 by the first switch valve 91.
As shown in Figure 8, first switch valve, second switch valve are electrically-controlled valve and connect master controller, on-off signal is delivered to master controller by sensor by dust gun, and master controller controls the first switch valve, the unlatching of second switch valve or closedown, and master controller is PLC.
Principle of work of the present invention is: as Fig. 4, shown in Fig. 8, when dust gun 6 works, master controller receives the start signal of dust gun 6, master controller firing pulse flow generator 8, master controller opens second switch valve 81 and the first switch valve 91, the pulse air that pulse air flow generator 8 produces forms an oscillating air flow and can fully mix the powder inside Venturi powder pump 5 and air and carry, the atomization gas that atomization gas producer 9 produces makes powder and air fully mix further, primary mixture is exported to spray gun in the end of flour extraction pipe 7, the pulse air that pulse air flow generator produces forms oscillating air flow can have a continuously impact effect to powder, make not easily to block in the course of conveying of powder, reliable operation, and reduce dust gun tell powder phenomenon, improve the effect of dusting, improving SNR, the number of times of maintenance can be reduced.
As shown in Figure 5, the pulse air flow that pulse air flow generator 8 produces is shown in shown in figure, and each cycle is divided into two time periods of W0 and W1, and in the W0 time period, pulse air flow is zero, and when in the W1 time period, pulse air flow is a constant value; As shown in Figure 6, in invention, the powder powder outlet quantity of Venturi powder pump perfect condition is an invariable value, and what solve dust gun tells powder phenomenon, improves the effect of dusting, improving SNR; As shown in Figure 7, powder powder outlet quantity is that maintain certain powder powder outlet quantity, what can solve dust gun very well tells powder phenomenon, improves the effect of dusting a less scope fluctuation in practice.
Claims (2)
1. drive a powder conveying device for Venturi powder pump with pulse air, it comprises:
One powder bucket, this powder bucket has one in order to the cavity of splendid attire powder, and powder bottom of the barrel offers fluid conductance entrance;
Fluid plate, this fluidized plate is located in powder bucket and near powder bottom of the barrel, be provided with fluid air chamber between fluidized plate and powder bottom of the barrel, described fluidized gas introducing port is communicated with this fluidisation air chamber;
One powder absorbing pipe, this powder absorbing pipe one end extend into inside powder bucket with powder bucket cavity connects, the other end connects the powder input port of Venturi powder pump;
One Venturi powder pump, have powder conveying gas entrance, atomization gas input port, powder input port and powder output port, atomization gas input port passes into atomization gas;
One flour extraction pipe, its one end is connected to the powder output port of Venturi powder pump;
It is characterized in that: also comprise
Pulse air flow generator, the mouth of pulse air flow generator connects the powder conveying gas entrance of Venturi powder pump, and the pulse air that pulse air flow generator produces forms an oscillating air flow and can fully mix the powder inside Venturi powder pump and air and carry;
The frequency of the air pulse that pulse air flow generator produces is in 1Hz ~ 1000Hz scope;
The end of flour extraction pipe connects dust gun, between the mouth of pulse air flow generator and Venturi powder pump, second switch valve is set, atomization gas input port connects atomization gas producer by the first switch valve, first switch valve, second switch valve are electrically-controlled valve and connect master controller, on-off signal is delivered to master controller by sensor by dust gun, and master controller controls the first switch valve, the unlatching of second switch valve or closedown.
2. a kind of pulse air according to claim 1 drives the powder conveying device of Venturi powder pump, it is characterized in that: master controller is PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483365.5A CN102963728B (en) | 2012-11-22 | 2012-11-22 | A kind of pulse air drives the powder conveying device of Venturi powder pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483365.5A CN102963728B (en) | 2012-11-22 | 2012-11-22 | A kind of pulse air drives the powder conveying device of Venturi powder pump |
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| Publication Number | Publication Date |
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| CN102963728A CN102963728A (en) | 2013-03-13 |
| CN102963728B true CN102963728B (en) | 2015-09-02 |
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| CN201210483365.5A Expired - Fee Related CN102963728B (en) | 2012-11-22 | 2012-11-22 | A kind of pulse air drives the powder conveying device of Venturi powder pump |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213846A (en) * | 2013-05-08 | 2013-07-24 | 杨新 | Method and device for cleaning grain bleachery |
| CN103662840A (en) * | 2013-12-06 | 2014-03-26 | 中山市君禾机电设备有限公司 | Device used for adding powder |
| CN110779297B (en) * | 2019-11-19 | 2023-07-21 | 江苏威拉里新材料科技有限公司 | Metal powder premixing and drying equipment |
| CN111115273B (en) * | 2019-12-26 | 2021-05-18 | 濉溪初新工业设计有限公司 | Vacuum feeding machine suction gun mechanism for conveying powder |
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|---|---|---|---|---|
| US5928423A (en) * | 1994-05-24 | 1999-07-27 | Rid Corporation | Pneumatically fed powder supply system and powder coating apparatus |
| US6194027B1 (en) * | 1997-11-03 | 2001-02-27 | Itw Gema Ag | Method and equipment for powder spray coating |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2982528B2 (en) * | 1992-12-28 | 1999-11-22 | 堺化学工業株式会社 | Powder transport equipment |
| JP3153488B2 (en) * | 1997-02-28 | 2001-04-09 | 株式会社栗本鐵工所 | Powder outlet of powder flow tank |
| CN201322011Y (en) * | 2008-12-24 | 2009-10-07 | 裕东（中山）机械工程有限公司 | Powder material pneumatic transmitting pump |
| CN201520551U (en) * | 2009-05-22 | 2010-07-07 | 中冶华天工程技术有限公司 | Bottom discharge powder fluidization conveyor |
| CN202464834U (en) * | 2012-01-13 | 2012-10-03 | 武汉景宏磁业有限公司 | Totally-closed conveying and dedusting device for fine-grained powder |
| CN102765604B (en) * | 2012-07-31 | 2014-12-24 | 瑞赛高廷仕（中山）涂装设备有限公司 | Powder conveyer device |
| CN202967562U (en) * | 2012-11-22 | 2013-06-05 | 裕东（中山）机械工程有限公司 | Powder conveying device adopting pulsed gas to drive Venturi powder pump |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5928423A (en) * | 1994-05-24 | 1999-07-27 | Rid Corporation | Pneumatically fed powder supply system and powder coating apparatus |
| US6194027B1 (en) * | 1997-11-03 | 2001-02-27 | Itw Gema Ag | Method and equipment for powder spray coating |
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