CN101391248A - Powder-spraying device for producing low-light-level image intensifier luminescent screen powder-layer - Google Patents
Powder-spraying device for producing low-light-level image intensifier luminescent screen powder-layer Download PDFInfo
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- CN101391248A CN101391248A CNA2008102321800A CN200810232180A CN101391248A CN 101391248 A CN101391248 A CN 101391248A CN A2008102321800 A CNA2008102321800 A CN A2008102321800A CN 200810232180 A CN200810232180 A CN 200810232180A CN 101391248 A CN101391248 A CN 101391248A
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Abstract
The invention discloses a powder spray device used to make a fluorescent screen powder layer of a low-light-level image intensifier, which comprises an air inlet component including a truncated cone-shaped shell seat, a filtering net, a U-shaped pipe, an electromagnetic valve and a pressure reducing valve, a powder spraying chamber with an air hole, and a fluorescent screen jig with a movable baffle, wherein, the big end and the small end of the truncated cone-shaped shell seat are respectively connected with the lower end of an air jet chamber and the U-shaped pipe, the pressure reducing valve and the electromagnetic valve are sequentially arranged at the other end of the U-shaped pipe, and the fluorescent screen jig is disposed at the upper end of the powder spraying chamber. When in use, the fluorescent screen is placed on the fluorescent screen jig, gases passing through the pressure reducing valve can enter the powder spraying chamber by a pulse mode through the on/off alternating state of the electromagnetic valve under the condition of closed movable baffle, so as to disperse the agglomerated fluorescent powder; and the dispersed fluorescent powder is sprayed on a glue layer of the fluorescent screen evenly under the function of continuous air flow by opening the movable baffle and making the electromagnetic valve be in the open state. The invention solves the problems of bulge points on the powder layer due to agglomeration of fluorescent powder and uneven manual powder dusting.
Description
Technical field
The invention belongs to the photoelectronic imaging technical field, relate generally to a kind of fluorescent screen of gleam image intensifier, relate in particular to a kind of dusting device of making the fluorescent screen bisque.
Background technology
The preparation method of gleam image intensifier fluorescent screen bisque has a variety of, mainly is divided into the precipitation method, centrifugal process, spread coating, electrophoresis, spraying process etc.The different fluorescent screen objects that preparation method was suitable for is slightly different.The precipitation method are applicable to the making of large tracts of land fluorescent screen bisque, centrifugal process only is applicable to the making of small size fluorescent screen bisque, the spread coating applicability is wide, can be used for the making of the big small screen bisque of different area, electrophoresis is applicable to the fluorescent screen bisque making of electrode rete, spraying process is similar to spread coating, and applicability is wide, but formed bisque quality has much room for improvement.
When spread coating is made the fluorescent screen bisque, on glue-line, spread fluorescent material earlier, make fluorescent material be covered with panel, flick with sponge then, fluorescent material is coated with all over the screen equably.Fluorescent powder grain is subjected to the smear effect of sponge, sticks on the glue-line, forms continuous, smooth phosphor powder layer.The quality of phosphor powder layer and glue-line quality and the quality of fluorescent material own all have relation.For making the fluorescent screen bisque smooth, even, at first should behind gluing, guarantee the smooth even of glue-line.But smooth the smooth even of bisque that evenly can not guarantee of glue-line.May can cause the inhomogeneous of bisque because dusting is inhomogeneous on the one hand; On the other hand, the granule size of fluorescent material own is 3～5 microns of diameters, and specific area is big, a poly-group phenomenon occurs easily, particularly under the bigger situation of phosphor surface coating poor quality or ambient humidity, and the easier generation of poly-group's phenomenon.Describe to some extent in Chinese patent application 200710188432.X disclosed " a kind of fluorescent powder dispersion method " about poly-group of fluorescent material and solution.In addition, common way is earlier fluorescent material to be sieved with separating sieve, and the purpose of sieving not is that fluorescent material is carried out sorting, breaks up but the effect by sieve aperture will gather the fluorescent material of group.In addition, when dusting, screen pack on the bottle mouth mask of dress fluorescent material plays the purpose of disperseing fluorescent material and even dusting.Though more than two kinds of measures also obtained certain effect, but in real work, still some problems can appear: for example, the fluorescent material that the process separating sieve sieved, use at short notice and poly-group phenomenon can not occur, but after after a while, poly-group phenomenon can appear again in fluorescent material, can't tackle the problem at its root; The effect of screen pack dusting neither be fine on the bottle mouth mask, because be difficult to control from bottle when falling powder powder amount, perhaps because the obstruction of screen pack causes fluorescent material not come out, perhaps when exerting oneself greatly, just pour out a lot of once, like this or can influence operating efficiency, or can cause waste to fluorescent material.In addition, in reality of work, can not guarantee the uniformity of dusting with the manual dusting of the bottle of band screen pack.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of dusting device of making the fluorescent screen bisque is provided, and this dusting device not only can screen fluorescent material, obtains the fluorescent material of suitable particle size; And can fully disperse fluorescent material, fluorescent material can also be sprayed equably on the glue-line of panel simultaneously.
For solving the problems of the technologies described above, fluorescent screen dusting device provided by the present invention is made of air intake assembly, powder spraying chamber and fluorescent screen anchor clamps, described air intake assembly contains truncated cone-shaped housing seat, screen pack, U-shaped pipe, magnetic valve, pressure-reducing valve, U-shaped Guan Yiduan docks with the portlet of truncated cone-shaped housing seat, the other end is installed described pressure-reducing valve, magnetic valve successively, and described magnetic valve has " opening ", " pass ", " ON/OFF alternately " three kinds of state of a controls; Described powder spraying chamber is cylindric, and its lower end is connected with the large port of U-shaped pipe and connecting portion is equipped with first screen pack, evenly offers a plurality of ventholes and be coated with second screen pack on one section endless belt tube wall on powder spraying chamber top on this endless belt tube wall; Described fluorescent screen anchor clamps are the disk cavity, and its upper surface is provided with lays fluoroscopic perforate, and sideboard is equipped with in the lower surface, and the lower end of fluorescent screen anchor clamps is connected with the upper port of powder spraying chamber, and the handle of sideboard is exposed to the outside of described disk cavity; During dusting operation, fluorescent screen is installed in the tapping of fluorescent screen anchor clamps, and described pressure-reducing valve is connected with outside gas cylinder, and when described sideboard was closed, described magnetic valve was in " ON/OFF alternately " state, and sideboard is when opening, and magnetic valve is in " opening " state.
According to the present invention, a sorting screen cloth is installed on the powder spraying chamber cross section above the described endless belt tube wall.
The present invention also comprises a receiving flask and tube connector, is carrying out fluorescent material when operation screening, and receiving flask is installed in the tapping of described fluorescent screen anchor clamps by tube connector, and described sideboard is in open mode, and described magnetic valve is in " ON/OFF alternately " state.
According to the present invention, described U-shaped pipe, truncated cone-shaped housing seat, powder spraying chamber, sideboard, fluorescent screen anchor clamps, tube connector all adopt glass or stainless steel or pollution-free plastics to make.
Beneficial effect of the present invention is embodied in the following aspects.
(1) dusting device of the present invention is before the operation of dusting, fluorescent screen is placed on the fluorescent screen anchor clamps, the closure state of sideboard is cooperated with " ON/OFF alternately " state of magnetic valve, in powder spraying chamber, feed pulsed gas by inlet duct, through after a while, fluorescent powder grain fully scatter; When dusting, the open mode of sideboard is cooperated with " opening " state of magnetic valve, feed continuation gas by air intake assembly in powder spraying chamber, gas will blow to fluorescent screen for a long time, take to fluorescent material on the panel and will be bonded at Jiao Mianshang, thereby form bisque.The ram charging mode that this process adopted makes fluorescent material in the fluorescent ventricle be in up and down reciprocatingly motion state all the time, is fully stirred, and has fundamentally overcome the poly-group of a fluorescent material of the prior art phenomenon.Simultaneously, the fluorescent material of dispersion can be sprayed on the fluoroscopic glue-line under the air-flow effect equably, and the fluorescent material that is not bonded on the glue-line also can be got back in the powder spraying chamber, can not cause the waste to fluorescent material, has saved raw material.
(2) on one section endless belt tube wall of powder spraying chamber, a plurality of pores and second screen pack are set, can prevent that nozzle chamber from forming malleation under the air-flow effect, can stop that again fluorescent material is with the air-flow powder spraying chamber of overflowing.
(3) the present invention installs a sorting screen cloth in powder spraying chamber, and by tube connector receiving flask is connected to the tapping of fluorescent screen anchor clamps, just can realize the screening to fluorescent material separately; In addition, screening and dusting operation are carried out simultaneously.
Description of drawings
Fig. 1 is the basic composition schematic diagram of fluorescent screen dusting device of the present invention.
Fig. 2 is the structural representation after sorting screen cloth and receiving flask are installed in the present invention additional.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and preferred embodiment.
As shown in Figure 1, the preferred embodiment of dusting device of the present invention is made of air intake assembly, powder spraying chamber 6 and fluorescent screen anchor clamps 9.The U-shaped pipe 3 that air intake assembly contains pressure-reducing valve 1, magnetic valve 2, made by stainless steel material, first screen pack 4, the truncated cone-shaped housing seat of making by stainless steel material 5.The internal diameter of U-shaped pipe 3 is 5～10mm, and the one end is connected with the osculum end of truncated cone-shaped housing seat 5 and connecting portion is equipped with first screen pack 4, and the other end is that air inlet is then installed pressure-reducing valve 1 and magnetic valve 2 successively.Powder spraying chamber 6 is a glass cylinder, its internal diameter and highly can deciding according to the fluoroscopic area and the requirement of dusting.For making the fluoroscopic bisque of φ 18mm, powder spraying chamber 6 can adopt diameter 50mm, the glass tube of height 500mm.The lower port of powder spraying chamber 6 is docked with the mode that the large port of truncated cone-shaped housing seat 5 can adopt flange or cutting ferrule to fix.On the endless belt tube wall at distance powder spraying chamber 6 upper port 30～50mm place, evenly offer a plurality of pores 7 and on this endless belt tube wall, be coated with second screen pack.When carrying out powder injection process operation or fluorescent material carried out the branch selection operation, pressure-reducing valve 1 is connected with gas cylinder, so that be to feed drying nitrogen or filtered dried compressed air by the air inlet of U-shaped pipe 3 to powder spraying chamber, the effect of pressure-reducing valve 1 is to regulate the gas pressure that enters in the U-shaped pipe 3.Magnetic valve 2 possesses three kinds of state of a controls i.e. " opening ", " pass ", " ON/OFF replaces ".Fluorescent screen anchor clamps 9 are the disk cavity, and its upper surface is provided with lays fluoroscopic perforate 10, and sideboard 11 is equipped with in the lower surface, and the upper port of the lower end of fluorescent screen anchor clamps 9 and powder spraying chamber 6 can adopt flange or cutting ferrule fixed form to realize closed butt joint equally.The handle of sideboard 11 is exposed to the cavity outside.The height of disk cavity is relevant with fluoroscopic height, and when fluorescent screen was placed on the upper surface of fluorescent screen anchor clamps 9, the lower surface of fluoroscopic glue layer and fluorescent screen anchor clamps 9 was at a distance of 2mm.Open sideboard 11, fluorescent screen just is exposed in the powder spraying chamber 6.In use of the present invention, the state of a control of the opening and closing of sideboard 11 and magnetic valve 2 should be coordinated mutually, and this rapport can also can be controlled by related circuit automatically by manually control.Because present used fluorescent material all passes through coating and handles, if ceaselessly stir with air-flow, reach mutual collision too much between the tube wall of fluorescent material and powder spraying chamber 6 and friction between the fluorescent material and can destroy the fluorescent material coating, influence the fluorescent material quality, so when disperseing the fluorescent material in the powder spraying chamber 6 or will adopting the ram charging mode during sorting, be that magnetic valve 2 is in " ON/OFF alternately " state and break-make frequency and the time that enters gas in the powder spraying chamber 6 can be set as the case may be, sideboard 11 is a closure state during this.Because powder spraying chamber 6 is vertically to place, the fluorescent material gravitate can gather first screen pack, 4 places, when gas is blown into powder spraying chamber 6 by U-shaped pipe 3, fluorescent material is floated by the air-flow effect upward, when gas stopped to enter, the downward sedimentation of fluorescent material gravitate meeting was under the effect of air pulse, fluorescent material is in this motion state up and down reciprocatingly all the time, and the fluorescent powder grain of poly-group will fully scatter and realize dry; Because of fluorescent material is subjected to external force action time short and mutual active force very little, thereby the ruined phenomenon of coating can not take place.When a large amount of gases of needs are sprayed onto fluorescent material on the fluorescent screen with certain speed, magnetic valve 2 is in " opening " state, sideboard 11 also is an open mode, make the throughput increasing and the powder spraying chamber 6 that enter powder spraying chamber 6 be in long-time aeration status, the fluorescent material that disperses will be ejected into fluoroscopic glue-line surface with air-flow, thereby form uniform bisque.Under off working state, magnetic valve 2 is in " pass " state to block air-flow.The taper surface of truncated cone-shaped housing seat 5 can make by the gas diffusion of U-shaped pipe 3 ejections even, and the fluorescent material that also helps to cause to fall and break simultaneously gathers on first screen pack 4.Pore 7 on the powder spraying chamber endless belt tube wall can prevent that the gas in the powder spraying chamber 6 from forming malleation.Second screen pack is used to stop that fluorescent material is with air-flow effusion powder spraying chamber 6.
According to shown in Figure 2,, can place sorting screen cloth 12 at 10～20mm place above the endless belt tube wall that has pore 7 in order to realize the purpose of sorting fluorescent material.The fluorescent material assorting room can carry out separately, the fluorescent screen that is about to install on the fluorescent screen anchor clamps 9 changes the fluorescent material receiving flask 13 that connects by tube connector 15 into, have the venthole 14 of band screen pack on the fluorescent material receiving flask 13, be used for discharging the gas of receiving flask 13, screen pack is used to stop that fluorescent material overflows with air-flow.Tube connector 15 connects with adopting cutting ferrule or Luo line being connected of fluorescent screen anchor clamps 9 and receiving flask 13.Sideboard 11 is in open mode, and magnetic valve 2 is in " ON/OFF alternately " state.Certainly, sorting also can be carried out simultaneously with dusting, promptly in the dusting operation process, and the sorting screen cloth 12 of in powder spraying chamber 6, packing into (between the label 7 of Fig. 1 and label 8, adding separating sieve net 12).
In the present invention, U-shaped pipe 3, truncated cone-shaped housing seat 5, powder spraying chamber 6, fluorescent screen anchor clamps 6, sideboard 11, tube connector 15 all can select for use glass, stainless steel or pollution-free plastics materials processing to make.
Claims (4)
1. make gleam image intensifier fluorescent screen bisque dusting device for one kind, it is characterized in that: this device is made of air intake assembly, powder spraying chamber [6] and fluorescent screen anchor clamps [9], described air intake assembly contains truncated cone-shaped housing seat [5], first screen pack [4], U-shaped pipe [3], magnetic valve [2], pressure-reducing valve [1], U-shaped pipe [3] one ends dock with the portlet of truncated cone-shaped housing seat [5], the other end is installed described pressure-reducing valve [1], magnetic valve [2] successively, and described magnetic valve [1] has " opening ", " pass ", " ON/OFF alternately " three kinds of state of a controls; Described powder spraying chamber [6] is cylindric, its lower end is connected with the large port of U-shaped pipe [3] and connecting portion is equipped with described first screen pack [4], evenly offers a plurality of ventholes [7] and be coated with second screen pack on one section endless belt tube wall on powder spraying chamber [6] top on this endless belt tube wall; Described fluorescent screen anchor clamps [9] are the disk cavity, its upper surface is provided with lays fluoroscopic perforate [10], sideboard [11] is equipped with in the lower surface, and the lower end of fluorescent screen anchor clamps [9] is connected with the upper port of powder spraying chamber [6], and the handle of sideboard [11] is exposed to the outside of described disk cavity; During dusting operation, fluorescent screen is installed in the tapping of fluorescent screen anchor clamps, and described pressure-reducing valve [1] is connected with outside gas cylinder, when described sideboard [11] is closed, described magnetic valve [2] is in " ON/OFF alternately " state, and sideboard [11] is when opening, and magnetic valve [2] is in " opening " state.
2. making gleam image intensifier fluorescent screen bisque dusting device according to claim 1 is characterized in that: a sorting screen cloth [12] is installed on powder spraying chamber [6] cross section above the described endless belt tube wall.
3. making gleam image intensifier fluorescent screen bisque dusting device according to claim 2, it is characterized in that: also comprise a receiving flask [13] and tube connector [15], have the venthole [14] of band screen pack on the receiving flask [13], when carrying out fluorescent material screening operation, receiving flask [13] is installed in the tapping of described fluorescent screen anchor clamps by tube connector [15], described sideboard [11] is in open mode, and described magnetic valve [2] is in " ON/OFF alternately " state.
4. according to claim 1 or 2 or 3 described making gleam image intensifier fluorescent screen bisque dusting devices, it is characterized in that: described U-shaped pipe [3], truncated cone-shaped housing seat [5], powder spraying chamber [6], sideboard [11], fluorescent screen anchor clamps [9], tube connector [15] all adopt glass or stainless steel or pollution-free plastics to make.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102321800A CN101391248A (en) | 2008-11-10 | 2008-11-10 | Powder-spraying device for producing low-light-level image intensifier luminescent screen powder-layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102321800A CN101391248A (en) | 2008-11-10 | 2008-11-10 | Powder-spraying device for producing low-light-level image intensifier luminescent screen powder-layer |
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| CN101391248A true CN101391248A (en) | 2009-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008102321800A Pending CN101391248A (en) | 2008-11-10 | 2008-11-10 | Powder-spraying device for producing low-light-level image intensifier luminescent screen powder-layer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879705A (en) * | 2014-03-06 | 2014-06-25 | 无锡双雄通用机械有限公司 | Feeding device of powdery raw material |
| CN104117470A (en) * | 2014-08-06 | 2014-10-29 | 浏阳市颐和隆烟花集团有限公司 | Flexible pressurization glue supply device for dispensing glue on molded fireworks |
| CN111215300A (en) * | 2020-03-09 | 2020-06-02 | 斯佩(新昌)科技有限公司 | Aerify tensile distributed anti-fake granule printing robot device |
| CN112885679A (en) * | 2021-01-14 | 2021-06-01 | 北方夜视技术股份有限公司 | Image intensifier fluorescent screen performance comparison device and method |
| CN112885685A (en) * | 2021-01-14 | 2021-06-01 | 北方夜视技术股份有限公司 | High-efficiency fluorescent screen for low-light level image intensifier and manufacturing method thereof |
-
2008
- 2008-11-10 CN CNA2008102321800A patent/CN101391248A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103879705A (en) * | 2014-03-06 | 2014-06-25 | 无锡双雄通用机械有限公司 | Feeding device of powdery raw material |
| CN104117470A (en) * | 2014-08-06 | 2014-10-29 | 浏阳市颐和隆烟花集团有限公司 | Flexible pressurization glue supply device for dispensing glue on molded fireworks |
| CN111215300A (en) * | 2020-03-09 | 2020-06-02 | 斯佩(新昌)科技有限公司 | Aerify tensile distributed anti-fake granule printing robot device |
| CN112885679A (en) * | 2021-01-14 | 2021-06-01 | 北方夜视技术股份有限公司 | Image intensifier fluorescent screen performance comparison device and method |
| CN112885685A (en) * | 2021-01-14 | 2021-06-01 | 北方夜视技术股份有限公司 | High-efficiency fluorescent screen for low-light level image intensifier and manufacturing method thereof |
| CN112885679B (en) * | 2021-01-14 | 2023-03-10 | 北方夜视技术股份有限公司 | Image intensifier fluorescent screen performance comparison device and method |
| CN112885685B (en) * | 2021-01-14 | 2023-03-24 | 北方夜视技术股份有限公司 | High-efficiency fluorescent screen for low-light level image intensifier and manufacturing method thereof |
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Open date: 20090325 |