JPH02503647A - Spray coating device with rotary spray means - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Low・1　　Eru　・Ll □ The present invention provides that the rotary spray extends through the means and disappears at the front thereof. The coating liquid sprayer having one passage in both cases has a rotary means for coating the coating means. In this regard, the rotating means serves to supply a cleaning liquid to the front part, and the cleaning liquid is supplied to the front part. As the part rotates, it flows to the other side of the front part, in the form of a liquid shell with a ring-shaped cross section. Once released, the shell creates a vacuum in front of the front.

Such a device is known in the prior art from US Pat. No. 3,144,209 . In this prior art device, the rotary spraying means has a generally flat disk. This disk is It is threaded onto and extends through the shaft. Concentric with the shaft It has many passages arranged in a circular shape. Coating fluids, especially enamels, Supplied on each day of passage as a tube. Switching from one type of coating fluid to another During the initial period, and when starting up after a long work stoppage, the spray coating equipment will Instead, it is cleaned with a cleaning fluid flowing through the tube and into the passageway. Rotary blowing during coating The coating liquid released from the means attracts air from the surroundings, thereby causing rotation. The spray creates a vacuum at the front of the means. The released coating liquid particles are The rotary spray will stick to the front of the means and will not be washed away by the cleaning solution during the cleaning operation. The cleaning fluid must, therefore, be removed from the radially outward direction of the coating fluid during the previous coating operation. During the cleaning operation, the rotation The transfer must flow through the radially innermost passage of the means, but one passage Coating liquid particles adhering to the radially inward front of the innermost ring are removed by this method. In this case, the cleaning solution cannot reach the innermost circle of the passage. Rotating spraying is located inside the front center of rotation, which means that additional The disadvantage of this is that it must be cleaned separately during the cleaning process. The same thing happens when it is bell-shaped instead of bell-shaped. Bell-shaped rotary spraying is a means of conventional technology. , US Pat. No. 3,281,076 and German Patent No. 3,000,002. Ru. In these cases, both the coating liquid and the cleaning liquid rotate on the axis of rotation, and the spraying proceeds to the front of the means. As a result, the front center of rotation can only be cleaned by additional methods and with additional work. It has the disadvantage that it cannot be cleaned.

Other disclosures are, for example, the specification of German Patent No. 3600920, German Patent No. 3 Specification of German Patent No. 605619, Specification of German Patent No. 1577919, European Patent No. Specification of German Patent No. 0092043, Specification of German Patent No. 3214314, German Patent No. Specification of British Patent No. 1427677, Specification of British Patent No. 2163675, Germany Specification of Patent No. 659062, Specification of European Patent No. 0032391, Fran Specification of German Patent No. 2543853, Specification of German Patent No. 3105.186 , the specification of German Patent No. 3431758, and the specification of European Patent No. 0216173. It is clear in the specification.

The present invention uses rotary spraying to clean the center of rotation at the front of the element while other areas of the front are cleaned with cleaning liquid. At the same time and automatically try to solve the problem of cleaning in an easy way while are doing. The equipment to be used for this spraying is small and can be completed in a shorter time than conventional equipment. Transfer spraying is considered to be a device that makes it possible to clean the entire front part of the device.

This problem is caused by the fact that the gas discharge means for the rotary spraying means is radially outward of the front part, The rotary spray from its front is located axially backwards beyond the means. This problem is solved by the features of the present invention, and the gas emitting means includes a gas and a gas agitated by the gas. Some of the particles of the agitated cleaning liquid are sucked into the front rotation center by the vacuum. It is ring-shaped, emits a ring-shaped gas flow cross section, and this gas flow The vacuum area created at the front by the liquid shell through the liquid shell of the cleaning solution. It plays the role of injecting into the area.

This allows the following spray coating methods to be carried out. That is, a) The liquid coating material is coated by means of spraying or rotary spraying during the coating operation. sprayed onto an object, b) In rotary spraying, the front part of the means is cleaned with cleaning liquid during breaks in coating work. The cleaning liquid is sprayed completely past the front of the means when sprayed by hand, and when sprayed by hand. The discharged cleaning liquid is discharged by the rotation of the stage, and the discharged cleaning liquid is sprayed far from the means. Extending and rotating the flow of liquid, it creates a vacuum in front of the front of the ring-shaped liquid. Form an outer cross section.

During step b), the cleaning liquid in the liquid envelope is agitated and the vacuum inside the liquid envelope The rotating spray forms a gas/cleaning liquid mixture that is drawn into the front center of rotation of the means. Therefore, according to the features of the present invention, the gas is mixed with the liquid on the side of the liquid shell remote from the vacuum region. Injected into the outer shell. The gas is preferably rotated and sprayed out of the hollow gas surrounding the means. The rotary spray in the form of a shell flows beyond the means to the liquid shell formed by the cleaning liquid. The cleaning liquid is stirred and the liquid particles are entrained in the gas, which is then placed in a vacuum area and sprayed by rotation. The vent tube passes the gas through the liquid envelope of the cleaning liquid to bring it to the center of the front of the means. To create the Lee injector effect, the gas is forced to When cleaning the front part of the radially from the center of rotation, thereby cleaning the entire front part including the center of rotation. Ru.

It is within the scope of other claims of the invention.

The invention will be explained below with reference to the drawings.

FIG. 1 shows a partial cutaway of the spray coating means of the present invention, in which the axis of rotation extends vertically. FIG.

FIG. 2 is a front view of the device of FIG. 1, taken in the direction of arrow H.

FIG. 3 shows another embodiment of the spray coating means of the invention, in which the axis of rotation is horizontal. .

FIG. 4 is a front view of the device of FIG. 3, viewed from the direction of arrow ▪.

Each spraying device shown in FIGS. 1 to 4 is rotatably supported by a carrier 2. Rotary spraying of coating liquid or cleaning liquid is carried out using means 4, and rotating spraying of coating liquid or cleaning liquid is carried out at the rear of the means. at least one tube 6 for alternately supplying the rear part 8 with cleaning liquid; at least two additional tubes 12 and 14 for and an annular air groove 16. From the groove 16, through the ring-shaped opening 20, a ring-shaped A gas curtain flows forward along the outer surface 22 to keep the outer surface 22 clean and remove liquid. ejected from the front 28 of the outer edge 30 to limit the radial diffusion of The discharged and sprayed coating liquid envelope 32 surrounds the coating liquid in the form of a liquid funnel. Depending on the flow intensity of the gas curtain 24, it will have a smaller or larger diameter.

The front part 28 of the rotary spraying means 4 is partially located in the rotating part 36 and at least It also consists of flat end faces @34 extending radially outward to a ring-shaped outlet 40.

The coating or cleaning liquid flows from the rear part 8 through the outlet 40 to the front part 28. front The other part of 28 is that the rotary blowing means 4 is firmly attached to the shaft 48. It is formed by the end face 42 of the head 44 of the screw 46. The end face 42 is flat. and is on the same plane as the flat end face region 34. The cleaning liquid flowing from the pipe 12 has an annular shape. is fired through a groove 50, which groove 50 is concentric with the axis of rotation 38, and the rotational spray is It is formed in the means 4 and extends beyond the threaded page 44 towards the front section 28 . bell A region 54 at the end of the edge 30 which is curved forward in a shape radial spacing 52 of the end surface areas 34 .

To this extent, all the embodiments of FIGS. 1 to 4 are of the same design.

The embodiment according to FIGS. 1 and 2 is an example of a ceiling part of an object such as a car body. This is a so-called ceiling machine for covering.

The axis of rotation 38 is arranged vertically for this purpose and the front part 28 is connected to the surface to be coated. directed downwards. In Figure 1, the lower side is indicated by X and the upper side is indicated by Y. ing. The ring 60 attached to the carrier 2 and coaxial with the rotating shaft #i38 is an annular groove 62 which is axially and circumferentially adjustable and to which an air pipe 64 is connected; have. A large number of holes 68 are formed in the ring 60 on the circle 66 and are distributed around the entire circumference. The hole 60 is the rotation axis! ! 38 and is concentric and parallel to the annular groove 62. communicates with the surrounding atmosphere. Hole 68 therefore rotates ilh! perpendicular to 138 It extends at an angle α of 90 degrees to the plane 70. Thereby, the hole 68 is 360 The rotational spraying means 4 is a hollow circle contained in the radial space. A cylindrical gas flow 72 is formed. The front end 70 of the ring 60 is rotary sprayed by means 4. from the edge 30 by a distance 73 ranging from 30 to 50 mm. air is not discharged during the discharge of the coating liquid, but the cleaning liquid passes through the tube 6.12.14. The gas is released through the gas release means, i.e. holes 68. This cleaning solution is The solution is 1.53Kgf/cm” to 3.57Kgf/cm” (1.5 to 3 ．． 5 bar) and in the form of a liquid envelope 32 at the front part 28. part 30. The cleaning liquid is rotary sprayed by the means 4 at a high speed, for example 2 per minute. Since it rotates at 5,000 rotations, it flows at high speed to the other side of the front part 28, and flows toward the front of the front part 28. Air is entrained from the area where it is located to create a vacuum in this area. However, this The vacuum is insufficient to draw cleaning fluid into the center 36 of the front section 28. for receiving and thereby cleaning a sufficient amount of cleaning fluid over the entire front section 28, including the , the air is 5.10 Kgf/cm” to 6, l 2 K g f / c m” (5 to 6 bar) pressure, i.e. higher than the pressure of the cleaning liquid. Then, the rotary spray from the hole 68 passes over the means 4 and enters the liquid envelope formed by the solution. , into the forward region 76 of the front portion 28 through which the vacuum extends. Ru. Therefore, the air flow from 668 and the liquid envelope of the cleaning liquid are combined. , forming a reverse venturi injector, the gas flow 72 flushing the liquid shell 32. Stir the liquid and entrain particles therefrom, thereby forming an air/cleaning liquid mixture. Ru. This mixture is drawn along arrow 80 by the vacuum in the front region 76 of the front section 28. The overall end face 34 and the end face 42 of the screw head 44 are attached and further form the front portion 28 . are attracted to. It attaches to the catch 42 and is pushed radially outward by rotation. 2, thereby cleaning the entire front section 28.

The embodiment shown in FIGS. 3 and 4 is a so-called side surface machine for coating side surfaces. be. The axis of rotation 38 is therefore horizontal in this example. Figures 1 and 2 Another difference from the embodiment is that the ring 90 that corresponds to the ring 60 functionally is The link is arranged so that it can be adjusted in the rotational and axial directions. The rotation axis) Ji! Same as 38 Holes 94 are provided which are centered and parallel. Numerous holes 96 are arranged at an angle of 240 degrees. The axis 98 of the hole is formed over the circle 93 of the remaining part of the barrel. In order to allow the air released through the hole from the groove 62 to flow downward at an angle, the angle is set at 30 degrees. It touches the front annular plane 70 at an angle of up to 60 degrees, preferably at an angle of 45 degrees. child As a result, in addition to the effects already explained with reference to FIGS. 1 and 2, the spraying is The covering means is not located directly below the object to be coated, but is directed downwardly through the hole 96. In the absence of air flow, rotary spraying will ensure that the cleaning fluid emitted from the means reaches the object to be coated. When positioned at a distance and height from the coated object that will be traveled, rotary spraying is The cleaning liquid discharged from stage 4 does not proceed to the surface of the object to be coated, due to these differences. 3 and 4, the embodiment shown in FIGS. It has the same parts and the same effect as the example, so please refer to the explanation above. I decided to do it.

"Y" ・・X・・FIG, 3 FIG. l.

Submission of translation of written amendment (Article 184-8 of the Patent Law) Yoshi, Commissioner of the Patent Office 1) Takeshi Moon 1. Display of patent application　PCT/LJS　881017463, Patent applicant Name: Landsburg Corporation 6, List of attached documents The scope of the claims 1. The rotary spray extends through the means and at least disappears in its front part 28. The coating liquid sprayer having one passage 5o also has a rotating means. and the rotating means serves to supply cleaning liquid to the front part, and the cleaning liquid is supplied to the front part. As the part rotates, the liquid flows to the other side of the front part and is released in the form of a liquid shell with an approximately ring-shaped cross section. The spraying device, in which the outer shell creates a vacuum in the front portion 28, is a coating device and the rotary spraying device The gas discharge means 68 for the means 4: 94.96 is the half of the front part 28. radially outwardly, from said front part thereof said rotary spray extends axially rearwardly beyond said means 4; Some of the gas and particles of the cleaning liquid stirred by the gas are separated from each other. The gas release is such that a portion of the gas is drawn into the center of rotation 36 of the front part 28 by the vacuum The outlet means is ring-shaped, and has a ring-shaped gas flow cross section 72: 72. 98 and directs this gas flow through the liquid envelope 32 of the cleaning liquid and into the liquid envelope. The spray, which serves to inject the vacuum area created in front of the front part, is attached to the coating equipment. There, The rotating shaft M138 of the means 4 is arranged approximately horizontally, and the rotating shaft M138 of the means 4 is The gas ejection direction 98 of the body ejection assembly means (section 96) is approximately above 240 degrees (d). An angle between 30 degrees and 60 degrees ( β) and directed downwardly at said gas release assembly means (section 94). The exit direction 72 extends approximately over the remaining partial circle 92 of approximately 120 degrees (c) along the rotation axis. 113B (Figs. 3 and 4). Coating equipment.

2. The gas flow 72: 72 and 98 are the gas discharge assembly Pj68: 94 and 96 have a higher pressure than the cleaning liquid in the liquid envelope 32 of the groove 50; , the gas flow and the liquid envelope form a Venturi device, and the rotary blowing is caused by the rotation of the liquid shell by the rotation of the means 4 and by the venturi device. The cleaning liquid is agitated to form a mixture of the cleaning liquid and the gas from the gas stream. A spray coating device according to claim 1, characterized in that the spray coating device is made of:

3. The rotary spraying is such that the front part 28 of the means 4 extends beyond the center of rotation 36. , having a flat end surface region 34.42 concentric with the center of rotation. The spray coating apparatus according to claim 1 or 2.

4. Said rotary spray screws securely attaching means 4 to said shaft 48. The end face 42 of the head 44 of 46 is flat and forms part of the flat end face area 42.34. The spraying according to claim 3 is characterized in that the spraying is on the same plane as the end face area. Overturning device.

5. The gas discharging assembly means 68: 94 and 96 perform the rotational blowing by hand Pj4. The rotary shaft #i38 is rotatably and freely adjustable in the axial direction. Any one of claims 1 to 4, characterized in that the ring is formed in a ring 60.90. The spray described above is a coating device.

6. The gas release means is axially offset with respect to the front portion 28 and The rotational spray is offset rearwardly beyond the means, said spray radially outwardly and annularly of the means 40. be formed by a large number of openings 68:94 and 96 arranged in the form of A spray coating device according to any one of claims 1 to 5, characterized in that:

7. a) The liquid coating material is coated by means of spraying or rotary spraying during the coating operation. b) rotary spraying at the front of the means, spraying at the stop of the coating operation; During this period, the front part of the means is cleaned by a cleaning liquid, which is sprayed in a rotating manner. One rotational spray is discharged by the rotation of the means, and the discharged cleaning liquid rotational spray extends away from the means and the rotating spray creates a vacuum in front of the front of the means.

The spraying to form a ring-shaped liquid outer cross section is performed in step b) of the coating method. During the cleaning process, the cleaning liquid in the liquid shell is stirred and the vacuum inside the liquid shell is used. The rotating spray forms a gas/cleaning liquid mixture that is drawn into the front center of rotation of the means. In order to Spraying is a coating method characterized by:

8. The gas penetrates the liquid outer shell of the cleaning liquid to create a venturi injector effect. The cleaning liquid is stirred and the liquid particles are entrained by the gas. Entering the vacuum region, the rotary blower moves the gas to the front of the means. , the rotary spray is applied over the means, and the rotary spray is applied to the outer shell of the hollow air body surrounding the means. the liquid to the outer surface formed by the cleaning liquid, and then The spraying method according to claim 7, characterized in that the gas is supplied at a sufficiently high pressure. is the coating method.

9. The first period in which the material is discharged by the rotation of the rotary atomizer and the material is discharged by the rotation of the rotary atomizer. A method of cleaning a rotary atomizer between the second period when the sprayer is discharged by rotation of the the rotary atomizer is configured to perform atomization of the material emitted by the rotary atomizer; a rotating atomizer edge forming a plane, from which the atomizer is ejected; In a method of cleaning a rotary atomizer, the material is ejected generally onto a first side of said plane. hand, providing a third period between the first and second periods; and a third period preceding the third period; successively rotating the rotary atomizer; a plane extending around the axis of rotation of the rotary atomizer and facing the first side; providing one or more nozzles that are open to air on a second side; and supplying gas at overpressure to the nozzle or nozzles during at least the third period. or supplying a gas mixture from the edge during the third period; feeding material to said rotary atomizer to emit a How to clean the sprayer.

10. The single or plural nozzles extending around the rotational axis of the rotary atomizer. extending substantially coaxially with the axis of rotation of the rotary atomizer. Alternatively, the rotary sprayer washer according to claim 9, further comprising the step of providing a plurality of nozzles. Purification method.

11. Single or plural nozzles extending substantially coaxially with the rotational axis of the rotary atomizer. the step of providing a rotary atomizer arranged substantially coaxially with the axis of rotation of the rotary atomizer; The rotary sprayer cleaning method according to claim 10, comprising the step of providing a plurality of nozzles. .

12. One or more nozzles extending substantially coaxially with the rotational axis of the rotary atomizer. the step of providing a rotary atomizer arranged substantially coaxially with the axis of rotation of the rotary atomizer; 10. The rotary sprayer cleaning method of claim 9, comprising the step of providing a plurality of nozzles.

13. One or more nozzles extending around the rotational axis of the rotary atomizer; The step of providing comprises providing a plurality of nozzles, each nozzle comprising: the gas or gas mixture forming different nozzle axes from which the gas or gas mixture is ejected from the nozzle; The nozzle axis of the second group of nozzles extends approximately parallel to the axis, and according to claim 9, which extends substantially obliquely with respect to the rotational axis of the rotary atomizer. Rotary sprayer cleaning method.

14. The rotational axis of the rotary atomizer makes an angle of less than 45 degrees with respect to the horizontal. The nozzle axis of the first group is mainly below the rotation axis of the rotary atomizer. and the nozzle axis of the second group is mainly on the rotation axis of the rotary atomizer. The rotary sprayer cleaning method according to claim 13.

15. before feeding the rotary atomizer with the material to be discharged from the edge during the third period; The step includes melting the material or materials supplied in the first and second periods. 10. The rotary sprayer cleaning method according to claim 9, comprising the step of supplying a liquid.

16. The first period in which the material is discharged by the atomizer and the time period in which the material is discharged by the atomizer. A method for cleaning a sprayer between a second period in which the sprayer is the atomizer having an atomizer axis along which the material emitted by the atomizer is ejected; The axis defines a plane approximately perpendicular to it and the location at which the material is sprayed by the atomizer. the material being ejected by the atomizer is substantially on the plane; ejected generally along an axis in a first direction away from a first side of the atomizer; A method of cleaning an atomizer in which the motion creates a pressure differential radially from the axis of the atomizer. There, providing a third period between the first and second periods; and a third period preceding the third period; successively discharging material from the atomizer; a single atom, in which the material ejected by said atomizer is oriented around the ejected axis; or providing a plurality of nozzles; At least during the third period, the nozzle or nozzles are injected with gas or a step of supplying a gas mixture; and a step of supplying a gas mixture, and supplying material by the atomizer during the third period. feeding a material to said atomizer for release of a material. Cleaning method.

17. applying material to the atomizer for release by the atomizer during the third period; said step of providing a single or 17. The method of cleaning a sprayer according to claim 16, comprising the step of providing a solution of a plurality of materials. Law.

18. a single unit extending about the axis along which the material ejected by said atomizer is ejected; said step of providing a number or plurality of nozzles emitted by said atomizer; It extends approximately coaxially with the axis from which the material is discharged. Install single or multiple nozzles 17. The sprayer cleaning method according to claim 16, comprising the step of:

19, the material ejected by said atomizer extends about the ejected axis; single said step of providing a number or plurality of nozzles emitted by said atomizer; the step of providing a plurality of nozzles arranged substantially coaxially with the axis from which the material is ejected; The sprayer cleaning method according to claim 16, comprising:

20, a single unit extending about the axis along which the material ejected by the atomizer is ejected; said step of providing a number or plurality of nozzles emitted by said atomizer; the step of providing a plurality of nozzles arranged substantially coaxially with the axis from which the material is ejected; The sprayer cleaning method according to claim 18, comprising:

said step of providing one or more nozzles extending into said plurality of nozzles; each nozzle directing said gas or gas mixture to said nozzle. The different axes of the first group of nozzles are formed. extends substantially parallel to the axis along which the material ejected by the atomizer is ejected. The different axes of the second group of nozzles are such that the material ejected by the atomizer is 17. The sprayer cleaning method of claim 16, wherein the sprayer cleaning method extends generally obliquely to the axis of the sprayer.

22, the axis along which the material ejected by the atomizer is ejected is 4 The nozzle axis of the first group is at an angle smaller than 5 degrees, and the nozzle axis of the first group is mainly the material ejected by the atomizer is below the ejecting axis, and the nozzles of said second group the atomizer axis is primarily above the axis along which the material ejected by the atomizer is ejected; 22. The sprayer cleaning method according to claim 21.

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Claims (24)

[Claims] 1. At least one part extending through the rotary spraying means and disappearing at the front part 28 thereof. Spray coating means comprising rotary means for spraying coating liquid having one channel 50 and the rotating means serves to supply cleaning liquid to the front part, and the cleaning liquid is supplied to the front part. As the part rotates, the liquid flows to the other side of the front part and is released in the form of a liquid shell with an approximately ring-shaped cross section. In the spray coating means, the outer shell creates a vacuum in the front section 28, the rotary spray The gas release means 68; 94, 96 relative to the outwardly, axially rearwardly displaced from the front part thereof beyond the rotary spraying means 4; The part of the gas is mixed with the particles of the cleaning liquid stirred by the gas. said gas ejection hand so that the part is drawn into the center of rotation 36 of the front part 28 by means of a vacuum. The stages are generally ring-shaped and emit generally link-shaped gas flow sections 72; 72, 98. and direct this gas flow through the cleaning fluid liquid envelope 32 and into the front region by the liquid envelope. A spray coating characterized by its role of injecting into the vacuum area that is occurring in front of it. means. 2. Said gas flows 72; 72 and 98 connect said gas discharge assembly means 68; 94 and and 96 have a higher pressure than the cleaning liquid in the liquid envelope 32 of the groove, and the gas The flow of the liquid and the liquid envelope form a Venturi device, and the flow of the rotary blowing means 4 forms a Venturi device. Due to the rotation of the liquid shell and the Venturi device, the cleaning liquid is agitation to create a mixture of the cleaning liquid and gas from the gas stream; The spray coating apparatus according to claim 1, characterized in that: 3. The front part 28 of the rotary spraying means 4 extends beyond the center of rotation 36. , having flat end face regions 34 and 42 concentric with the rotation center. The spray coating apparatus according to claim 1 or 2. 4. a screw firmly attaching said rotary blowing means 4 to the forefoot shaft 48; The end face 42 of the head 44 of 46 is flat, and a portion of the flat end face area 42, 34 The sprayed coating according to claim 3, wherein the sprayed coating is on the same plane as the end face area. Overturning device. 5. The axis of rotation 38 of the rotary blowing means 4 is substantially vertical and the gas discharge assembly The gas discharge direction 72 of the means 78 extends substantially parallel to the rotational axis 38 (first and FIG. 2) according to any one of claims 1 to 4. coating equipment. 6. The rotational axis 38 of the rotary spraying means 4 is arranged substantially horizontally, and Said gas ejection direction 98 of the gas ejection assembly means (section 96) is approximately 240 degrees (d). An angle between 30 degrees and 60 degrees with respect to the vertical plane 70 across the upper partial circle 93 (β) and directed downwardly at said gas ejection assembly means (section 94). The ejection direction 72 is rotated approximately over the remaining partial circle 92 of approximately 120 degrees (c). Claims characterized in that they extend substantially parallel to the axis 38 (FIGS. 3 and 4). 5. The spray coating device according to any one of 1 to 4. 7. The gas discharge assembly means 68; 94 and 96 are connected to the rotary blowing means 4. A ring arranged rotatably and axially adjustable with respect to the rotational axis 38 60, 90, according to any one of claims 1 to 6, characterized in that: spray coating equipment. 8. The gas release means is axially offset with respect to the front portion 28 and Displaced rearwardly beyond the rotary spraying means and radially outward and annularly of said spraying means 4. be formed by a large number of openings 68; 94 and 96 arranged in a shape; The spray coating apparatus according to any one of claims 1 to 7, characterized by: 9. a) The liquid coating material is applied by rotating spray means during a spray coating operation. b) the front part of the rotary spraying means is sprayed onto the object to be sprayed during a pause in the spray coating operation; In the meantime, the cleaning liquid is passed through the front part of the rotary spraying means without any corners. The cleaning liquid is discharged by the rotation of the rotary spraying means, and the discharged cleaning liquid is rotated. extending away from the spraying means, the flow of which creates a vacuum in front of the front of the rotating spraying means; In a spray coating method forming a substantially ring-shaped liquid contour cross-section, step b) During the cleaning process, the cleaning liquid in the liquid shell is stirred and the vacuum inside the liquid shell is used. forming a gas/cleaning liquid mixture that is drawn into the front center of rotation of said rotary spraying means. In order to A spray coating method characterized by: 10. The gas passes through the liquid shell of the cleaning liquid and enters the venturi injector. effect, whereby the cleaning liquid is stirred and the liquid particles are entrained by the gas. said air to enter the vacuum region and move to the front of said rotating blowing means. a hollow air body envelope extending beyond the rotary blowing means and surrounding the rotary blowing means; , the cleaning liquid flows to the liquid outer shell formed by the cleaning liquid. The blower according to claim 9, wherein the gas is supplied at a pressure sufficiently higher than that of the blower according to claim 9. Covering method. 11. a first period in which the material is ejected by rotation of the rotary atomizer; A method of cleaning a rotary atomizer between the second period when the sprayer is released by rotation of the device. The rotary atomizer is arranged so that the atomization of the material emitted by the rotary atomizer is carried out. the rotating atomizer edge forming a flat surface and emitting from the edge the rotating atomizer edge; a method for cleaning a rotary atomizer, wherein material is discharged generally onto a first side of said plane; There, providing a third period between the first and second periods; and a third period preceding the third period; a step that continuously rotates the rotary atomizer; a plane extending around the axis of rotation of the rotary atomizer and facing the first side; providing one or more nozzles that are open to air on a second side; and supplying gas at overpressure to the nozzle or nozzles during at least the third period. or supplying a gas mixture from the edge during the third period; feeding material to said rotary atomizer to emit a How to clean the sprayer. 12. the one or more nozzles extending around the rotational axis of the rotary atomizer; extending substantially coaxially with the axis of rotation of the rotary atomizer. The rotary atomizer according to claim 11, further comprising the step of providing a plurality of nozzles. Cleaning method. 13. one or more nozzles extending substantially coaxially with the rotational axis of the rotary atomizer; the step of providing a rotary atomizer arranged substantially coaxially with the axis of rotation of the rotary atomizer; The rotary sprayer cleaning method according to claim 12, comprising the step of providing a plurality of nozzles. . 14. one or more nozzles extending substantially coaxially with the rotational axis of the rotary atomizer; the step of providing a rotary atomizer arranged substantially coaxially with the axis of rotation of the rotary atomizer; The rotary sprayer cleaning method according to claim 11, comprising the step of providing a plurality of nozzles. . 15. one or more nozzles extending around the axis of rotation of the rotary atomizer; The step of providing comprises a step of providing a plurality of nozzles, each nozzle comprising: the gas or gas mixture forming different nozzle axes from which the gas or gas mixture is ejected from the nozzle; The different nozzle axes of the first group of nozzles coincide with the rotation axis of the rotary atomizer. The different nozzle axes of the second group of nozzles extend substantially parallel to the rotary atomizer. 12. The rotary atomizer cleaner of claim 11, wherein the rotary atomizer cleaner extends generally obliquely to the axis of rotation of the rotary atomizer cleaner. Method. 16. The axis of rotation of the rotary atomizer makes an angle of less than 45 degrees with respect to the horizontal. The nozzle axis of the first group is mainly below the rotation axis of the rotary atomizer. and the nozzle axis of the second group is mainly on the rotation axis of the rotary atomizer. The rotary sprayer cleaning method according to claim 15. 17. before feeding the rotary atomizer with the material to be discharged from the edge during the third period; The step includes melting the material or materials supplied in the first and second periods. 12. The rotary sprayer cleaning method according to claim 11, comprising the step of supplying a liquid. 18. a first period in which the material is ejected by the atomizer and a period in which the material is ejected by the atomizer; A method for cleaning a sprayer between a second period in which the sprayer is the atomizer having an atomizer axis along which the material emitted by the atomizer is ejected; The axis defines a plane approximately perpendicular to it and the location at which the material is sprayed by the atomizer. a position substantially on said plane, and the material ejected by said atomizer lies substantially on said plane. ejected generally along an axis in a first direction away from a first side of the atomizer; In the method of cleaning a sprayer, the motion creates a pressure difference in the radial direction from the axis of the sprayer. hand, providing a third period between the first and second periods; and a third period preceding the third period; successively discharging material from the atomizer; the material ejected by the atomizer extends about the ejected axis; one or more nozzles open to air on the side of the plane opposite the first side a step of providing a At least during the third period, the nozzle or nozzles are injected with gas or a step of supplying a gas mixture; and a step of supplying a gas mixture, and supplying material by the atomizer during the third period. feeding a material to said atomizer for release of a material. Cleaning method. 19. material to the atomizer for discharge by the atomizer during the third period of time; said step of providing a single or 19. A sprayer cleaning method according to claim 18, comprising a step for supplying solutions of a plurality of materials. Law. 20. a single unit extending about the axis along which the material ejected by said atomizer is ejected; said step of providing a number or plurality of nozzles emitted by said atomizer; one or more nozzles extending substantially coaxially with the axis from which the material is ejected; 19. The sprayer cleaning method according to claim 18, comprising the step of: 21. a single unit extending about the axis along which the material ejected by said atomizer is ejected; said step of providing a number or plurality of nozzles emitted by said atomizer; the step of providing a plurality of nozzles arranged substantially coaxially with the axis from which the material is ejected; The sprayer cleaning method according to claim 18, comprising: 22. a single unit extending about the axis along which the material ejected by said atomizer is ejected; said step of providing a number or plurality of nozzles emitted by said atomizer; the step of providing a plurality of nozzles arranged substantially coaxially with the axis from which the material is ejected; The sprayer cleaning method according to claim 20, comprising: 23. The material ejected by said atomizer extends around the ejected axis; The step of providing a number or a plurality of nozzles may be a step of providing a plurality of nozzles. each nozzle ejects said gas or gas mixture from said nozzle. The different nozzle axes of the first group of nozzles form the axes of the spray. The material ejected by the container extends approximately parallel to the ejected axis, and The different axes of the nozzles are relative to the axis along which the material ejected by said atomizer is ejected. 19. The method of cleaning a sprayer according to claim 18, wherein the nebulizer extends generally at an angle. 24. The axis along which the material ejected by the atomizer is ejected is at 4 degrees with respect to the horizontal. The nozzle axis of the first group is at an angle smaller than 5 degrees, and the nozzle axis of the first group is mainly the material ejected by the atomizer is below the ejecting axis, and the nozzles of said second group the atomizer axis is primarily above the axis along which the material ejected by the atomizer is ejected; 24. The sprayer cleaning method according to claim 23.