• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A coating booth for the electrostatic application of powdery materials onto workpieces. The coating booth has a generally tubular configuration which when viewed in side elevation is generally oval but with a spiral curved bottom front wall which melds into a flat bottom surface extending toward an outlet at the bottom of the rear wall of the booth. On the rear of the booth there is a fixed fan module to which a removable filter module may be attached so as to interconnect the booth air outlet with the suction fan module. This construction facilitates quick color changes of the powdery material by maintaining a minimum deposit of powder on the interior of the booth and by enabling the filters to be interchanged without the necessity of first cleaning the filters or of interchanging individual filter media before restarting the booth with a new color.
    公开号:SU904507A3
    申请号:SU792733394
    申请日:1979-03-02
    公开日:1982-02-07
    发明作者:Беркманн Адольф
    申请人:За витель；
    IPC主号:
    专利说明:

    The invention relates to a technique for applying powdered materials in an electrostatic field.
    A known installation for the electrostatic deposition of powdered · 5 materials, comprising a deposition chamber with an opening in the middle part of the wall to accommodate the atomizer * and an outlet for the gas-powder mixture, made in the lower * 0 part of the chamber from the side opposite the opening, the suction unit and a filtering device eleven].
    The application chamber has a rectangular shape. In the corners of the chamber, powder particles that do not settle on the product accumulate. When replacing the powder, mainly dyes, when switching to another dye, it is necessary to completely clean the chamber, which takes a lot of time (several hours, depending on the size of the chamber).
    The purpose of the invention is to reduce the cleaning time of the application chamber.
    This goal is achieved by the fact that in the installation for electrostatic deposition of powdered materials, containing the application chamber with an aperture in the middle part for placement of the atomizer and an outlet for the gas-powder mixture, made in the lower part of the chamber from the side opposite to the aperture, the suction unit and the filtering device, the wall of the application chamber in the region 'between the opening and the outlet is made curved in a circle, an ellipse or a spiral, expanding towards the outlet, and the application chamber eposredstvenno connected to the filter device via the outlet. ·
    The application chamber is made with a cross section in the form of a circle, ellipse or spiral, expanding to the outlet.
    Moreover, the outlet and / or opening is made in the entire length of the application chamber.
    The application chamber is made with a length equal to or equal to half its largest diameter.
    In this case, the suction unit is installed directly on the application chamber from the side of its outlet.
    To enable the replacement of the filter device, it is installed with the ability to move
    The installation can be equipped with additional application chambers, sequentially installed so that the openings and exhaust openings of adjacent chambers alternate with each other.
    In FIG. I shows the application chamber from the end; in FIG. 2 - application chamber, plan view; in FIG. 3 installation with several application cameras.
    Installation for electrostatic deposition of powdered materials contains the application chamber 1 with the end walls 2 and the bounding wall 3 and the support frame 4 for the application chamber. In the upper part, the chamber 1 has a longitudinal slot or slot 5 made along the entire length of the chamber and the end walls to the transport openings 6. In addition, the installation includes a conveyor 7 with holders 8 of the products 9. The restriction wall 3 of the application chamber has an opening 10 in the middle part for placing the atomizer 11 and the outlet 12 for the gas-powder mixture in the lower part.
    Directly at the outlet 12, a filter device 13 is adjacent to the application chamber 1, which serves to separate the powder particles contained in the air stream and moves on the rollers 14. The suction assembly 15 is mounted directly on the application chamber 1 on the side of its outlet 12. The filter device is precisely adapted to suction assembly 15. The application chamber 1 is connected to the filtering device 13 through an outlet 12, the application chamber 1 can be filled with a cross-section in the form of a circle, ellipse or spiral, expanding to the outlet.
    The chamber 1 shown in FIG. 1 has an oval shape, with part 16 of the boundary wall 3 from the bottom. the edge 17 of the opening 10 to the lower edge 18 of the outlet 12 is curved in a spiral expanding towards the outlet 12.
    The installation may contain several application chambers (Fig. 3), sequentially installed in such a way that the openings 10 and the outlet 12 of adjacent chambers alternate with each other. In such an installation, a spray device 19 may be provided. For the penultimate camera along the direction of movement of the product, the spray tubes 20 of which are introduced into the application chamber through slits 21, similar in function to the opening 10.
    Installation at once.
    Product 9 7 is served in
    The coating is applied in an electrostatic field using a spray gun 11 located in the opening 10 of the restriction wall 3. Through the opening 10, an air stream enters the application chamber 1 due to the suction action of the suction unit 15. Powder particles not deposited on the product are sent through the outlet through the air stream 12 of the application chamber into the filter device '13, while the separation of powder particles occurs, which is collected at the bottom of the filter device. When replacing paint or powder, the filtering device 13 on the rollers 14 is advanced from its working position and is replaced by another .. filtering device.
    The following application chamber works using the transporter.
    Due to the fact that the chamber does not have angles along the path of the gas-powder mixture, all powder particles that have not settled on the product are freely transported by air flow to the chamber outlet 12. A very insignificant part of the powder material, which due to the charge remains on the chamber wall, is the rial wall, a thin layer that is easy to remove with a smooth restrictive when replacing the applied material904507
    If necessary successive application of several hours one coating layer using a number of deposition chambers (FIG. 3).
    The proposed installation is reliable in operation, convenient in operation and allows you to switch to another type of applied material without significant investment of time.
    权利要求:
    Claims (7)
    [1]
    3 limes or helixes extending to the outlet. Moreover, the outlet and / or opening are made in the entire length of the application chamber. The application chamber is made equal to or half the length of its largest diameter. At the same time, the suction unit is installed directly on the application chamber on the side of its outlet opening. To enable the replacement of the filtering device, it is mounted for movement. The installation can be equipped with additional application units that are sequentially installed so that the openings and outlet openings from the rear chambers alternate with each other. FIG. Figure I shows an end application chamber; in fig. 2 shows an application chamber, a view to the airframe of FIG. 3 installation with multiple application cameras. The plant for electrostatic deposition of powdered materials comprises an application chamber I with end walls 2 and a restriction wall 3 and a support frame 4 for an application chamber. In part, camera 1 has a longitudinal slot or slot 5, made along the entire length of the chamber and the end walls to the transport openings 6. In addition, the installation includes a trailer 7 with holders 8 products 9 Restrictive wall 3 of the camera has an opening 10 in the middle part for placing the sprayer 1 and the outlet 12 for the gas-powder mixture at the bottom. Directly at the outlet 12 to the deposition chamber 1, a filter device 13 is closed, which serves to separate the powder particles contained in the air stream and moves on rollers -14. The suction unit 15 is installed directly on the application chamber 1 on the sides of its outlet port 12. The filter device is precisely adapted to the suction unit 15. Application chamber 1 is connected to the filter device 13 through outlet port 12, Application chamber 1 can be made with a cross section in the form of a circle, ellipse or spiral extending to the outlet. Camera 1 shown in FIG. 1 has an oval shape, wherein part 16 of the restriction wall 3 from the lower edge 17 of the opening 10 to the lower edge 18 of the outlet 12 is bent in a spiral that extends B in direction to the outlet 12. The installation may contain several application chambers (Fig. 3) arranged in series in such a way that the openings 10 and the outlets of the 12 adjacent chambers alternate with each other. In such an installation, a spreading device 19 may be provided, for the penultimate in the direction of movement of the product of the chamber, the spray tubes 20 of which are introduced into the application chamber through the slots 21, are similar to the function of opening 10. The installation works as follows. The product 9 is transported with the conveyor 7 into the application chamber 1. The coating is applied in an electrostatic field with the help of a spray gun 1I placed in the opening 10 of the restriction wall 3. Through the opening 10 into the application chamber 1 enters the air flow due to the suction effect of the OTCdca 15 unit. Powder particles not settled on the product, the air flow is directed through the outlet 12 of the application chamber to the filtering device 13, thus separating the particles of the powder, which is collected in the lower part of the filtering device. When replacing an ink or powder, the filter device 13 on the rollers 14 moves out of the working position and is replaced by another filter device. Due to the fact that the chamber does not have corners in the path of the gas-powder mixture, all particles of the powder that are not deposited on the product are freely transported by the air flow to the outlet 12 of the chamber. A very insignificant part of the powdered material, which due to the charge remains on the chamber wall in the form of a thin layer, is easily removed from the smooth restrictive wall when replacing the applied material. If it is necessary to apply several layers of the coating successively, a number of application chambers are used (Fig. 3). The proposed installation is reliable in operation, convenient in operation, and allows switching to another type of applied material without a significant investment of time. Claims, Installation for electrostatic WHICH deposition of powdered materials, comprising a chamber coated with an opening in the middle of the wall to accommodate the atomizer and an outlet for the gas-powder mixture made in the lower part of the chamber on the side opposite to the opening, suction nodes and a filtering device what, . in order to reduce the cleaning time of the deposition chamber, its wall at the site between the opening and the discharge opening is made curved around the circumference, ellipse or helix extending to the outlet opening. wherein the application chamber is directly connected to the filter unit through an outlet.
    [2]
    2. Installation under item 1, characterized in that. That the carrying chamber is made with a cross section in the form of a circle, an ellipse or a spiral extending to the outlet.
    [3]
    3. Installation on PP. 1 and 2, moreover, that the outlet and / or opening is made the entire length of the application chamber,
    [4]
    4. Installation on PP. 1-3, characterized by the fact that the application chamber is made equal to or half the length of its largest diameter.
    [5]
    5. Installation by PP. 1-4, characterized in that the suction assembly is mounted directly on the application chamber from the side of its outlet opening.
    [6]
    6. Installation on PP. 1-5, characterized in that, in order to provide the possibility of replacing the filtering device, it is mounted for movement.
    [7]
    7. Installation on PP. 1-6, characterized in that it is provided with additional application chambers, successively installed so that the openings and outlets of the neighboring chambers alternate with each other. Sources of information that are considered in the examination 1. USSR author's certificate number 568463, cl. B 05 B 5/08, 1976 (prototype).
    &
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    同族专利:
    公开号 | 公开日
    CA1126010A|1982-06-22|
    JPS54160443A|1979-12-19|
    DD142155A5|1980-06-11|
    ATA521778A|1980-04-15|
    FR2418679A1|1979-09-28|
    DK30479A|1979-09-03|
    DE2809020A1|1979-09-06|
    PT69000A|1979-01-01|
    GR74447B|1984-06-28|
    FR2418679B1|1984-04-13|
    PL114418B1|1981-01-31|
    AT359616B|1980-11-25|
    DE2809020B2|1980-08-28|
    GB2015383B|1983-01-12|
    ES475307A1|1979-04-01|
    GB2015383A|1979-09-12|
    IT1048448B|1980-11-20|
    SE7813169L|1979-09-03|
    HU179417B|1982-10-28|
    CH638698A5|1983-10-14|
    US4378728A|1983-04-05|
    CS222240B2|1983-05-27|
    BR7901264A|1979-10-09|
    IN150788B|1982-12-18|
    AR222322A1|1981-05-15|
    PL213821A1|1979-11-05|
    JPS6211629B2|1987-03-13|
    NO790686L|1979-09-04|
    YU51779A|1982-08-31|
    IT7824427D0|1978-06-12|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2809020A|DE2809020B2|1978-03-02|1978-03-02|Coating booth for the electrostatic application of powdery substances|
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