CN113049432A - Artificial dirt accumulation device and method - Google Patents
Artificial dirt accumulation device and method Download PDFInfo
- Publication number
- CN113049432A CN113049432A CN202110311503.0A CN202110311503A CN113049432A CN 113049432 A CN113049432 A CN 113049432A CN 202110311503 A CN202110311503 A CN 202110311503A CN 113049432 A CN113049432 A CN 113049432A
- Authority
- CN
- China
- Prior art keywords
- dirt
- area
- fan
- particle dispersion
- dirt particle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
An artificial dirt accumulation device and a method thereof are provided, the device comprises a dirt particle dispersion area, a dirt particle settling area, a partition board and a fan, the dirt particle dispersion area is positioned above the dirt particle settling area, the partition board separates the dirt particle dispersion area from the dirt particle settling area, an object to be accumulated is placed in the dirt particle settling area, the fan is arranged in the dirt particle dispersion area and used for blowing air to uniformly disperse dirt particles in the dirt particle dispersion area, the partition board is of a removable or openable structure, and when the partition board is removed or opened, the dirt particles uniformly dispersed in the dirt particle dispersion area enter the dirt particle settling area and are attached to the object to be accumulated in a natural settling manner. The invention realizes that the dirt particles are uniformly attached to the circuit board in a natural sedimentation mode, avoids the interference of additional manual operation and improves the consistency of dirt accumulation of the circuit board.
Description
Technical Field
The invention relates to an artificial dirt accumulation device and method.
Background
At present, an artificial pollution accumulation method aiming at a circuit board is lacked, and a quantitative painting method, a pollution soaking method, a pollution spraying method and a pollution pouring method which are commonly used in the field of external insulation are applied to the circuit board pollution accumulation, so that a plurality of problems exist.
The dirt-accumulating method is that kaolin or diatomite is mixed with proper amount of deionized water to prepare dirt liquid, and the dirt liquid is covered on the surface of the sample and dried to form a dry dirt layer. However, because kaolin or diatomite is an insoluble substance and is mixed with deionized water to form a suspension, precipitates can be formed in a short time, and dirt particles in a dirt solution are not uniformly distributed, so that the uniformity of a dirt layer on the surface of a test article is poor.
In order to improve the uniformity of the polluted liquid, the pollution accumulation method requires that the polluted liquid must be continuously stirred while the polluted liquid is polluted, namely, two tasks of pollutant dispersion and pollutant attachment need to be completed simultaneously, and the difficulty of pollution accumulation operation is high.
Different from the insulator, the surface structure is simple, a large number of electronic components are mounted on a circuit board such as a thyristor voltage monitoring board, the surface structure is complex, the space size is small, and therefore a quantitative coating method is difficult to uniformly coat the polluted liquid on the surface of the circuit board, and the pollution accumulation consistency is poor. The surface of the circuit board has strong hydrophobicity, so that the soaking pollution method and the pouring pollution method can form large liquid drops which are agglomerated one by one on the surface of the circuit board, and cannot form a continuous liquid film, so that the effective pollution accumulation is difficult. The problem that insoluble dirt particles are accumulated to block a liquid outlet channel easily occurs in the dirt spraying method, and the quantity of the insoluble dirt particles attached to the circuit board in each dirt spraying process is greatly different, so that the consistency is poor.
In summary, the disadvantages of the existing manual dirt accumulation scheme of the circuit board are as follows:
the foul solution is adopted as the foul form, and the spatial distribution of insoluble foul particles is not uniform because the foul solution is suspension. The dispersion of the dirt and the attachment of the dirt need to be completed simultaneously, and the operation difficulty of dirt accumulation is large. Dirt needs to be attached to the circuit board through manual operation (brushing, dip coating, pouring and spraying), the dirt accumulation consistency is poor, and partial scheme of the hydrophobicity of the circuit board is difficult to effectively accumulate dirt.
It is to be noted that the information disclosed in the above background section is only for understanding the background of the present application and thus may include information that does not constitute prior art known to a person of ordinary skill in the art.
Disclosure of Invention
The main purpose of the present invention is to overcome the above-mentioned drawbacks of the background art, and to provide an artificial dirt deposition apparatus and method, which can achieve uniform dispersion of insoluble dirt particles and uniform attachment of the insoluble dirt particles to a circuit board.
In order to achieve the purpose, the invention adopts the following technical scheme:
an artificial dirt accumulation device comprises a dirt particle dispersion area, a dirt particle settling area, a partition board and a fan, wherein the dirt particle dispersion area is located above the dirt particle settling area, the partition board separates the dirt particle dispersion area from the dirt particle settling area, an object to be accumulated is placed in the dirt particle settling area, the fan is arranged in the dirt particle dispersion area and used for blowing air to enable dirt particles to be uniformly dispersed in the dirt particle dispersion area, the partition board is of a removable or openable structure, and when the partition board is removed or opened, the dirt particles uniformly dispersed in the dirt particle dispersion area enter the dirt particle settling area and are attached to the object to be accumulated in a natural settling mode.
Further:
and the center of the bottom of the dirt particle settling area is provided with a placing table for placing an object to be accumulated with dirt.
The fan is arranged at the upper part of the dirt particle dispersion area in a suspension mode through a fan bracket.
The fan comprises a plurality of fans which are uniformly and symmetrically arranged around the center of the dirt particle dispersion area.
The fans are arranged in three numbers and are arranged in an equilateral triangle shape.
The fan support comprises a mounting disc, a plurality of suspension strips and a plurality of fan fixing devices, the mounting disc is fixed at the center of the top of the dirt particle dispersion area, the suspension strips are uniformly distributed and fixed on the mounting disc and extend outwards and symmetrically from the mounting disc, the fan fixing devices are respectively installed on the suspension strips, and the fans are respectively fixed on the fan fixing devices.
And a through hole is formed in the mounting disc, and the mounting disc is fixed on the top of the dirt particle dispersion area through the through hole by adopting a bolt and a nut.
And a cable hole is formed in the dirt particle dispersion area, and a power line of the fan is connected to a power supply outside the dirt particle dispersion area through the cable hole.
The object to be polluted is a circuit board.
An artificial dirt-accumulating method for attaching dirt particles to the object to be accumulated by said artificial dirt-accumulating unit.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an artificial pollution accumulation device which can be applied to circuit boards such as thyristor voltage monitoring boards and the like, can generate insoluble pollution particles which are uniformly distributed in space and have good dispersibility, and can prevent the insoluble pollution particles from being concentrated in partial areas. The manual dirt accumulation device can decompose the dirt accumulation process into two steps of uniform dispersion of dirt particles and attachment of the dirt particles, and reduces the difficulty of dirt accumulation of the circuit board. The invention realizes that the dirt particles are uniformly attached to the circuit board in a natural sedimentation mode, avoids the interference of additional manual operation and improves the consistency of dirt accumulation of the circuit board.
Drawings
Fig. 1 is an overall structure diagram of a circuit board manual dirt deposition device according to an embodiment of the invention.
Fig. 2 is a bottom view of a fan bracket according to an embodiment of the invention.
Description of reference numerals:
(1) the device comprises a dirt particle dispersion area, (2) a dirt particle settling area, (3) a placing table, (4) a circuit board, (5) a partition board, (6) a power switch, (7) a fan power line, (8) a cable hole, (9) a bolt, (10) a nut, (11) a fan, (12) a fan support, (13) a through hole, (14) a mounting disc, (15) a welding spot, (16) a hanging strip and (17) a fan fixer.
Detailed Description
The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for either a fixed or coupled or communicating function.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be in any way limiting of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 and 2, in one embodiment, an artificial pollution device comprises a pollutant particle dispersing area 1, a pollutant particle settling area 2, a partition plate 5 and a fan 11, the dirt particle dispersing area 1 is positioned above the dirt particle settling area 2, the partition board 5 separates the dirt particle dispersing area 1 from the dirt particle settling area 2, objects to be accumulated are placed in the dirt particle settling area 2, the fan 11 is arranged in the dirt particle dispersing area 1, for blowing air to uniformly disperse the dirt particles in the dirt particle dispersion zone 1, the partition plate 5 is of a removable or openable structure, and when the partition plate 5 is removed or opened, the dirt particles uniformly dispersed in the dirt particle dispersion area 1 enter the dirt particle settling area 2 and are attached to the object to be dirt-accumulated in a natural settling mode. Typically, the object to be contaminated is a circuit board 4, however, the present invention does not exclude the use of other kinds of objects to be contaminated. The contaminant particles may generally be, but are not limited to, insoluble contaminant particles.
In a preferred embodiment, an object placing table 3 is arranged at the center of the bottom of the filthy particle settling area 2 and used for placing an object to be filthy accumulated.
In a preferred embodiment, the fan 11 is mounted in a suspended manner by a fan bracket 12 in the upper part of the dirt particle dispersion zone 1.
In a more preferred embodiment, said fans 11 comprise a plurality of fans 11 arranged evenly and symmetrically around the centre of said dirt particle dispersion zone 1. In a preferred embodiment, three fans 11 are provided, arranged in an equilateral triangle.
In a preferred embodiment, the fan bracket 12 includes a mounting plate 14, a plurality of suspension bars 16, and a plurality of fan holders 17, the mounting plate 14 is fixed at the center of the top of the dirt particle dispersing area 1, the plurality of suspension bars 16 are uniformly distributed and fixed on the mounting plate 14 and symmetrically extend outward from the mounting plate 14, the fan holders 17 are respectively mounted on the suspension bars 16, and the plurality of fans 11 are respectively fixed on the fan holders 17.
In a preferred embodiment, the mounting plate 14 is provided with through holes 13, and the mounting plate 14 is fixed to the top of the dirt particle dispersion region 1 through the through holes 13 by using bolts 9 and nuts 10.
In a preferred embodiment, the pollutant particle dispersing area 1 is provided with a cable hole 8, and a power supply line of the fan 11 is connected to a power supply outside the pollutant particle dispersing area 1 through the cable hole 8.
In another embodiment, an artificial pollution deposition method is used for attaching pollution particles to an object to be polluted by using the artificial pollution deposition device of any one of the previous embodiments.
The embodiment of the invention provides an artificial pollution accumulation device which can be applied to circuit boards such as thyristor voltage monitoring boards and the like, can generate insoluble pollution particles which are uniformly distributed in space and have good dispersibility, and can prevent the insoluble pollution particles from being concentrated in partial areas. The manual dirt accumulation device can decompose the dirt accumulation process into two steps of uniform dispersion of dirt particles and attachment of the dirt particles, and reduces the difficulty of dirt accumulation of the circuit board 4. The invention adopts a natural sedimentation mode to ensure that the dirt particles are uniformly attached to the circuit board, thereby avoiding the interference of additional manual operation and improving the consistency of dirt accumulation of the circuit board.
Specific embodiments of the present invention are described further below by way of example.
The manual dirt accumulation device of one specific embodiment is used for manually accumulating dirt on the circuit board. The manual dirt accumulation device comprises a dirt particle dispersion area 1, a dirt particle settling area 2, an object placing table 3, a circuit board 4, a partition board 5, a power switch 6, a fan power line 7, a cable hole 8, a bolt 9, a nut 10, a fan 11 and a fan support 12. The fan bracket 12 comprises a through hole 13, an iron disc 14, a welding point 15, an iron bar 16 and a fan fixer 17. The dirt particle dispersion area 1 and the dirt particle settling area 2 are separated by a partition board 5, the object placing table 3 is fixed at the center of the bottom of the dirt particle settling area 2, and the circuit board 4 is placed on the object placing table 3. The main body of the fan bracket 12 comprises a mounting disc 14 and a suspension bar 16, the mounting disc 14 and the suspension bar 16 are welded together through welding spots 15, a fan fixer 17 is arranged at the tail end of the suspension bar 16, and a through hole 13 is formed in the center of the mounting disc 14. The bolts 9 and the nuts 10 fix the fan bracket 12 on the top surface of the dirt particle dispersion area 1 through the through holes 13. The fan 11 is mounted on the fan holder 17, and the fan power supply line 7 is connected to the power switch 6 through the cable hole 8 on the top surface of the dirt particle dispersing area 1.
Forming insoluble dirt particles with good dispersibility and uniform spatial distribution in the dirt particle dispersion area 1 by using a fan 11; insoluble dirt particles in the dirt particle settling area 2 naturally settle on the surface of the circuit board 4 to form a uniform dirt layer; the object placing table 3 is positioned at the center of the bottom of the dirt particle settling area 2, and the dirt accumulation uniformity is the best; the baffle 5 separates the dirt particle dispersion area 1 from the dirt particle sedimentation area 2, and decomposes the dirt accumulation process of the circuit board 4 into two steps of uniform dispersion of dirt particles and attachment of dirt particles, thereby reducing the difficulty of dirt accumulation; the fan power line 7 is led out of the dirt particle dispersion area 1 through the cable hole 8, the starting and stopping of the fan 11 can be controlled outside, and the spatial distribution of dirt particles cannot be interfered; three fans 11 are arranged in the dirt particle dispersion area 1 in total and are arranged in an equilateral triangle, and insoluble dirt particles are uniformly dispersed by continuously blowing; the fan bracket 12 enables the fan 11 to suspend and blow air downwards, so as to avoid insoluble dirt particles from depositing on the surface of the partition board 5.
The three fans 11 arranged in an equilateral triangle continuously downwards supply air to fully disperse the insoluble dirt particles in the dirt particle dispersion area 1, and the spatial uniform distribution of the insoluble dirt particles can be realized after a period of time. The fan bracket 12 enables the fan 11 to suspend and blow air downwards, so as to avoid the deposition of dirt particles. The fan power line 7 is led out of the dirt particle dispersion area 1 through the cable hole 8, and the fan 11 is controlled to operate outside the dirt particle dispersion area 1, so that the interference on the spatial distribution of dirt particles during operation is avoided.
The arrangement of the partition plate 5 skillfully reduces the dirt accumulation difficulty. The partition 5 separates the contaminant particle dispersion zone 1 from the contaminant particle settling zone 2. Firstly, the fan 11 is used for blowing air to uniformly disperse the dirt particles in the dirt particle dispersion area 1, then the fan 11 is closed to draw out the partition board 5, and the dirt particles are attached in the dirt particle settling area 2.
The insoluble contaminant particles uniformly distributed in the windless environment of the contaminant particle settling area 2 settle freely under the action of gravity and finally attach to the surface of the circuit board 4. The dirt accumulation mode has good consistency due to no action of human force, and the dirt accumulation consistency of the circuit board 4 is improved.
An application method of the artificial pollution accumulation device using the embodiment comprises the following steps:
step 1: insoluble filth powder with the mass of m is placed above the partition board, and the circuit board is placed on the placing table.
Step 2: turning on fan to supply air until insoluble dirt powder is fully and uniformly distributed in dirt particle dispersion area, turning off fan, and supplying air for t0。
And step 3: the partition board is quickly drawn out to ensure that the uniformly dispersed insoluble dirt powder is naturally deposited on the surface of the circuit board in a windless environment for t1。
And 4, step 4: and taking out the circuit board, and measuring the quality of insoluble dirt powder deposited on the surface of the circuit board.
And 5: repeating the steps 1 to 4 times, and taking the average value of the mass of the insoluble dirt powder deposited on the surface of the circuit board measured five times as a typical value m of the dirt deposition amount0. Typical value m of the amount of accumulated dirt0The mass of insoluble dirt powder is m, and the air supply time of the fan is t0Deposition time t1Obtained under the initial conditions of (1).
Step 6: for quantitative dirt accumulation, the test requires that the dirt accumulation mass is M, and the dirt accumulation frequency n is [ M/M [ ]0]And repeating the step 1 to the step 3 for n times. If M/M0Is an integer, the quantitative fouling is completed at this time, otherwise, the step 7 is executed additionally.
And 7: step 1 to step 3 are executed 1 time, and it should be noted that the quality of the insoluble dirty powder in step 1 is modified to (M-n × M) in this execution0)×m/m0。
The background of the present invention may contain background information related to the problem or environment of the present invention and does not necessarily describe the prior art. Accordingly, the inclusion in the background section is not an admission of prior art by the applicant.
The foregoing is a more detailed description of the invention in connection with specific/preferred embodiments and is not intended to limit the practice of the invention to those descriptions. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the invention, and these substitutions and modifications should be considered to fall within the scope of the invention. In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the claims.
Claims (10)
1. An artificial dirt accumulation device is characterized by comprising a dirt particle dispersion area, a dirt particle settling area, a partition board and a fan, wherein the dirt particle dispersion area is located above the dirt particle settling area, the partition board separates the dirt particle dispersion area from the dirt particle settling area, a to-be-accumulated object is placed in the dirt particle settling area, the fan is arranged in the dirt particle dispersion area and used for blowing air to uniformly disperse dirt particles in the dirt particle dispersion area, the partition board is of a removable or openable structure, and when the partition board is removed or opened, the dirt particles uniformly dispersed in the dirt particle dispersion area enter the dirt particle settling area and are attached to the to-be-accumulated object in a natural settling mode.
2. The artificial pollution accumulation device according to claim 1, wherein a placement table is arranged at the center of the bottom of the pollution particle settling area and used for placing an object to be polluted.
3. The artificial pollution deposition apparatus of claim 1, wherein the fan is mounted in a suspended manner by a fan bracket at an upper portion of the pollutant particle dispersing zone.
4. The artificial pollution deposition device of claim 3, wherein the fan comprises a plurality of fans arranged uniformly and symmetrically around the center of the pollutant particle dispersion zone.
5. The artificial pollution accumulation device of claim 4 wherein there are three fans arranged in an equilateral triangle.
6. The artificial pollution discharge device according to any one of claims 3 to 5, wherein the fan bracket comprises a mounting plate fixed to the top center of the pollutant particle dispersion region, a plurality of suspension bars uniformly distributed and fixed to the mounting plate and symmetrically extending outward from the mounting plate, and a plurality of fan holders respectively mounted to the suspension bars, and the plurality of fans are respectively fixed to the fan holders.
7. The artificial pollution deposition device according to claim 6, wherein a through hole is formed in the mounting plate, and the mounting plate is fixed to the top of the pollution particle dispersion area through the through hole by using a bolt and a nut.
8. The artificial pollution discharge device according to any one of claims 1 to 7, wherein a cable hole is formed in the pollutant particle dispersing area, and a power supply wire of the fan is connected to a power supply outside the pollutant particle dispersing area through the cable hole.
9. The artificial pollution discharge device according to any one of claims 1 to 8, wherein the object to be polluted is a circuit board.
10. An artificial pollution accumulation method characterized in that the artificial pollution accumulation device according to any one of claims 1 to 9 is used to attach pollution particles to an object to be polluted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110311503.0A CN113049432A (en) | 2021-03-24 | 2021-03-24 | Artificial dirt accumulation device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110311503.0A CN113049432A (en) | 2021-03-24 | 2021-03-24 | Artificial dirt accumulation device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113049432A true CN113049432A (en) | 2021-06-29 |
Family
ID=76515020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110311503.0A Pending CN113049432A (en) | 2021-03-24 | 2021-03-24 | Artificial dirt accumulation device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113049432A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447333A (en) * | 2021-07-29 | 2021-09-28 | 广东电网有限责任公司 | Insoluble dirt accumulation device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010160076A (en) * | 2009-01-08 | 2010-07-22 | Fujitsu Ltd | Dust evaluation testing apparatus |
| CN104655172A (en) * | 2015-01-23 | 2015-05-27 | 北京邮电大学 | Small-sized dust particle screening and winnowing device |
| CN104849184A (en) * | 2015-04-16 | 2015-08-19 | 华东师范大学 | Micro-area closing apparatus for simulating atmospheric dust dry deposition |
| CN206560406U (en) * | 2016-11-21 | 2017-10-17 | 肇庆学院 | Equipment with air cleaning and floor suction dual-use function |
-
2021
- 2021-03-24 CN CN202110311503.0A patent/CN113049432A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010160076A (en) * | 2009-01-08 | 2010-07-22 | Fujitsu Ltd | Dust evaluation testing apparatus |
| CN104655172A (en) * | 2015-01-23 | 2015-05-27 | 北京邮电大学 | Small-sized dust particle screening and winnowing device |
| CN104849184A (en) * | 2015-04-16 | 2015-08-19 | 华东师范大学 | Micro-area closing apparatus for simulating atmospheric dust dry deposition |
| CN206560406U (en) * | 2016-11-21 | 2017-10-17 | 肇庆学院 | Equipment with air cleaning and floor suction dual-use function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447333A (en) * | 2021-07-29 | 2021-09-28 | 广东电网有限责任公司 | Insoluble dirt accumulation device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113049432A (en) | Artificial dirt accumulation device and method | |
| US4628859A (en) | Apparatus and workpiece fixture for electrostatic spray coating | |
| JP5487487B2 (en) | Metal porous body and method for producing the same | |
| US3411931A (en) | Electrostatic method of applying flock to a paint roller sleeve | |
| US3824912A (en) | Powder spray booth | |
| EP0769200B1 (en) | Method and apparatus for depositing cathode material on a wire cathode | |
| US3603287A (en) | Apparatus for coating elongated articles | |
| CN113600379A (en) | Turnover device for spraying paint on automobile spare and accessory parts | |
| EP0007370A1 (en) | Spraybooth for use in electrostatic powder coating | |
| JPH0338281A (en) | Preparation of precoated metal plate | |
| CN106733321B (en) | A kind of skylight spraying hanging panel jig | |
| CA1172579A (en) | Wet electrostatic precipitator having means for dampening the swaying of its discharge electrodes | |
| CN215823437U (en) | Turnover device for powder coating spraying equipment | |
| US3695226A (en) | Spraying booth | |
| CN217120615U (en) | Spraying hanger of bumper tow hook lid | |
| CN217550150U (en) | Composite board workpiece electrostatic powder coating device | |
| CN217140816U (en) | Automatic spray coating blocking device and automatic spray coating system | |
| CN218459902U (en) | Galvanized sheet backplate spraying hanger | |
| CN212751452U (en) | Alternating-current high-voltage metal closed ring network switch equipment | |
| CN214864502U (en) | Spray gun for powder spraying | |
| US2447270A (en) | Electroplating apparatus | |
| CN217057058U (en) | Supporting structure for air-conditioning box type electronic purification sterilizer | |
| CN220258404U (en) | A hanger for rectangular pipe static sprays paint | |
| CN220258403U (en) | Hanger for electrostatic painting of bending part | |
| CN218308993U (en) | Enameled copper wire painting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |