Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
  • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
  • B05B14/43—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by filtering the air charged with excess material
  • B05B14/435—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by filtering the air charged with excess material with means for cleaning the filters by gas flow, e.g. blasts of air
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
  • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
  • B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
  • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
  • B05B14/43—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by filtering the air charged with excess material
  • B05B14/437—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by filtering the air charged with excess material with means for introducing solid material into the air charged with excess material for preventing clogging of the filter
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
  • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
  • B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
  • B05B14/468—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material with scrubbing means arranged below the booth floor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
  • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
  • B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
  • B05B14/469—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material wherein the washing material is the spraying material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2267/00—Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
  • B01D2267/30—Same type of filters
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
  • B01D2273/12—Influencing the filter cake during filtration using filter aids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
  • B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
  • B01D46/0043—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding containing fixed gas displacement elements or cores
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
  • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
  • B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
  • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
  • B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
  • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
  • B05B14/43—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by filtering the air charged with excess material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
  • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
  • B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
  • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

• the present invention relates to a device for separating wet paint overspray from an exhaust air stream containing overspray particles, wherein the overspray particles pass into the exhaust air stream in an application area of a paint shop.
• Such devices are used in systems for painting workpieces, in particular for spray painting vehicle bodies, in which an air flow is generated by an application region of the system, which dissipates excess wet paint from the application area.
• the known leaching systems have the disadvantage, in particular in the case of circulating air, that the exhaust air stream from which the wet paint overspray is separated is supplied with a high amount of moisture, so that the exhaust air stream must be subjected to an energy-intensive dehumidification after deposition of the wet-paint overspray.
• the present invention has for its object to provide a device of the type mentioned above, which allows separation of the wet paint overspray from the exhaust air flow in a simple, reliable and energy-saving manner.
• This object is achieved in a device having the features of the preamble of claim 1 according to the invention that the device comprises at least one separation device for separating the overspray from at least a portion of the exhaust air stream having at least one regenerable surface filter, and that the flow path of the exhaust air stream of the application region to the separation device has at least one constricted region, wherein the mean flow direction of the exhaust air flow when passing the constricted region is substantially maintained.
• a regenerable surface filter is to be understood as meaning a filter which has a filter surface on which the wet-paint overspray entrained by the exhaust air flow is deposited, and which, preferably during operation of the device, can be cleaned by the paint overspray deposited thereon.
• regenerable surface filter is a "dry" separator in which no liquid is used to wash out the overspray particles from the exhaust air stream, but filter elements are used to separate the overspray particles from the air stream.
• the cleaning of the regenerable surface filter by means of a "dry” cleaning device, i. without using a cleaning liquid, or by means of a "wet” cleaning device, i. using a cleaning fluid.
• a “dry” separator may also be provided with a “wet” cleaning device as long as only the deposition of the overspray particles on the regenerable separator into dry white . se, ie without leaching by means of a leaching, takes place.
• the entire separation of wet paint overspray from the overspray particles containing exhaust air flow is completely dry, that is without the use of a liquid for washing the overspray particles from the exhaust air stream.
• regenerable surface filter in the separator eliminates the need to provide a leaching facility and associated water treatment. As a result, the energy consumption of the separation device and (by eliminating the water treatment) and the space required by the device are significantly reduced.
• the cleanability of the surface filter also ensures a long service life of the filter even with large amounts of resulting wet paint overspray.
• the constricted area is arranged below the application area. If the application area is arranged in a paint booth, then the narrowed area is preferably arranged within a vertical projection of the base of the paint booth.
• the extent of the narrowed area in the flow direction of the exhaust air flow is shorter than approximately 6 m, preferably shorter than approximately 1 m, in particular shorter than about 0.5 m.
• the narrowed area preferably extends in the longitudinal direction of the paint booth over substantially the entire length of the paint booth.
• the narrowed region in the longitudinal direction of the paint booth can be subdivided into a plurality of narrowed part regions.
• the narrowed region is not subdivided in the longitudinal direction of the paint booth.
• the application area is arranged in a paint booth with a transverse direction, it can be provided that the narrowed area in the transverse direction of the paint booth is subdivided into a plurality of narrowed part areas.
• the narrowed region is not divided in the transverse direction of the paint booth.
• the entry of the exhaust air flow into the narrowed region is preferably arranged above the at least one regeneratable surface filter.
• the smallest cross section of the narrowed area through which the exhaust air stream flows preferably has an extension in the transverse direction of the paint booth which is at most approximately 20% of the extension of the paint booth in the transverse direction of the paint booth.
• At least one shielding element is arranged vertically above the at least one regeneratable surface filter, which prevents vertical falling off of objects, dirt and / or paint particles from the application area to the regenerable surface filter.
• the at least one shielding element forms a boundary of the narrowed area.
• the device comprises at least one flow guide, which directs at least a portion of the exhaust air flow to the constricted area.
• the flow guide can have an at least partially substantially aligned flow guide.
• the flow-guiding element has an at least sectionally inclined flow-guiding surface against the horizontal, preferably towards the narrowed region.
• the device has a bottom which limits the flow path of the exhaust air flow downward, it can be provided that at least part of the bottom is covered by an area separated from the area of the device through which the exhaust air flows. In this way, the bottom surface is reduced, which is contaminated by before reaching the at least one surface filter separated from the exhaust stream wet paint over-spray. It may be provided that an upper boundary wall of the region separated from the area of the device through which the exhaust air flows is at least part of a flow guide element that directs at least part of the exhaust air flow to the narrowed area.
• the application area is arranged in a painting booth and the device comprises at least one exhaust air duct into which at least part of the exhaust air stream enters after passing through the separating device, a particularly space-saving construction of the device is achieved if the exhaust air duct is within a vertical projection of the base area Paint booth is arranged.
• the at least one regenerable surface filter has a barrier layer comprising a precoat material, which prevents sticking of the filter surface.
• the device has at least one precoat Feed device includes, which emits a precoat material in the exhaust air stream.
• the discharge of precoat material into the exhaust air stream can take place continuously or at intervals.
• Suitable precoat materials are, for example, lime, aluminum silicates, aluminum oxides, silicon oxides, powder coating or the like.
• any medium suitable as a precoat material is capable of absorbing the liquid portion of the wet-paint overspray.
• the precoat feed device can be arranged, for example, directly in front of the at least one regenerable surface filter.
• the at least one precoat feed device immediately after the application area, for example in the bottom area of the paint booth.
• the at least one precoat feed device is arranged at the narrowed region of the flow path of the exhaust air flow.
• particularly high flow velocities prevail, so that a particularly good precoat distribution in the exhaust air stream is achieved by venturi turbulence through the supply of the precoat material at this point.
• the at least one regenerable surface filter of the separating device is preferably cleaned at intervals.
• the at least one regenerable surface filter has a moist surface during operation of the device.
• the surface filter may, for example, be kept moist by rinsing or wetting media such as demineralized water, butyl glycol or other solvents to facilitate cleaning of the surface filter.
• rinsing or wetting media such as demineralized water, butyl glycol or other solvents to facilitate cleaning of the surface filter.
• the surface of the at least one regenerable surface filter is rinsed continuously or at intervals.
• the at least one regenerable surface filter can be cleaned by compressed air pulses.
• Claim 30 is directed to a system for painting objects, in particular vehicle bodies, which comprises at least one painting booth and at least one device according to the invention for separating wet paint overspray from an exhaust air stream containing overspray particles.
• Fig. 1 is a schematic vertical cross section through a first
• Embodiment of a paint booth with a device arranged underneath for separating wet paint overspray from an overspray particle-containing exhaust air stream which comprises two separation devices for separating the overspray from the exhaust air flow and two exhaust ducts which extend laterally to the left or right of the plan of the paint booth, wherein a narrowed region of the flow path of the exhaust air flow is provided between an application region of the paint booth and the separation devices, which is delimited by horizontally oriented flow guide elements;
• Fig. 2 is a schematic side view of the system of Fig. 1;
• Fig. 3 is a schematic plan view from above of the plant from the
• Fig. 1 and 2; Fig. 4 is a schematic perspective view of the system from the
• Fig. 5 is a schematic representation of a recirculating air circuit of the system of Figures 1 to 4.
• FIGS. 1 to 5 shows a schematic perspective view of a regenerable surface filter of the system from FIGS. 1 to 5;
• Fig. 6 which illustrates a cleaning process of the surface filter
• Fig. 8 is a schematic perspective view of an alternative
• Fig. 8 illustrating a cleaning process of the surface filter
• Fig. 10 is a schematic plan view from above of the surface filter of Figs. 8 and 9;
• FIG. 11 shows a schematic cross section through a second embodiment of a paint booth with an apparatus arranged underneath for separating wet paint overspray from an exhaust air stream containing over-spray particles, which two separating devices for separating the overspray from the exhaust air stream and two exhaust air ducts running laterally next to the plan of the paint booth, a narrowed area of the flow path of the exhaust air stream being provided between an application area of the paint booth and the shutoff devices, which is bounded by flow guide elements inclined towards the horizontal;
• Fig. 12 is a schematic side view of the system of Fig. 11;
• Fig. 13 is a schematic plan view from above of the plant from the
• Fig. 14 is a schematic perspective view of the system from the
• FIG. 15 shows a schematic cross section through a third embodiment of a paint booth with an apparatus arranged underneath for separating wet paint overspray from an overflow particle-containing exhaust air stream, which two separation devices for separating the overspray from the exhaust air flow and two laterally adjacent to the floor plan Paint booth extending exhaust air ducts, wherein between a region of application of the paint booth and the separation means a narrowed portion of the flow path of the exhaust air stream is provided in the form of a vertically extending shaft;
• Fig. 16 is a schematic side view of the system of Fig. 15;
• Fig. 17 is a schematic plan view from above of the plant from the
• Fig. 18 is a schematic perspective view of the system from the
• 19 is a schematic cross-section through a fourth embodiment of a paint booth with an apparatus arranged underneath for separating wet paint overspray from an overflow particle-containing exhaust air stream, which includes a separation device for separating the overspray from the exhaust air stream and within a vertical projection of Base of the paint booth arranged exhaust duct comprises;
• Fig. 20 is a schematic side view of the system of Fig. 19;
• Fig. 21 is a schematic plan view from above of the plant from the
• Fig. 22 is a schematic perspective view of the system from the
• 1 to 7 designated as a whole by 100 for painting vehicle bodies 102, comprises a conveying device 104 shown purely schematically, by means of which the vehicle bodies 102 are moved along a conveying direction 106 through an application area 108 of a paint booth designated as a whole by 110 can be.
• the conveyor 104 may be formed, for example, as an inverted circular conveyor or as an inverted monorail conveyor.
• the conveyor 104 may be formed in two parts and - as best seen in FIGS. 1, 3 and 4 - comprise two parallel to the conveying direction 106 extending conveyor strands 104a and 104b, which in a direction perpendicular to the conveying direction 106 horizontal direction spaced apart are.
• the application area 108 is the interior of the painting cabin 110, which is bounded on each side of the conveying device 104 by a respective cabin wall 114 in its horizontal transverse direction 112, which runs perpendicular to the conveying direction 106 and corresponds to the longitudinal direction of the painting booth 110.
• Spray painting devices 116 are arranged in the painting booth 110 on both sides of the conveying device 104, for example in the form of painting robots.
• an air flow is generated, which passes through the application region 108 substantially vertically from top to bottom, as indicated in FIG. 1 by the arrows 119. In the application area 108, this air stream absorbs paint overspray in the form of overspray particles.
• particles encompasses both solid and liquid particles, in particular droplets.
• the wet paint overspray consists of paint droplets.
• overspray particles have a largest dimension in the range of about 1 ⁇ m to about 100 ⁇ m.
• the exhaust air stream represented by the arrows 120 leaves the painting booth 110 through a cabin floor 122, which is formed by air-permeable gratings 124.
• the system 100 further comprises a device, designated as a whole by 126, for separating wet paint overspray from the air stream 120, which is arranged below the application region 108.
• the device 126 comprises a substantially cuboidal flow chamber 128, which extends in the conveying direction 106 over the entire length of the painting booth 110 and in the transverse direction 112 of the painting booth 110 is bounded by vertical side walls 130 which substantially with the lateral cabin walls 114 of Paint booth 110 are aligned so that the flow chamber 128 has substantially the same horizontal cross-sectional area as the paint booth 110 and substantially complete is arranged within the vertical projection of the base of the paint booth 110.
• the flow chamber 128 is subdivided into an upper section 136 and a lower section 138 by flow guide elements 132, which in this exemplary embodiment are designed as substantially horizontally oriented flow guide plates 134.
• the upper portion 136 and the lower portion 138 of the flow chamber 128 are interconnected by a constricted portion 140 which has the shape of a gap 142 between the opposing free edges of the flow directors 132 and forms a constriction in the flow path of the exhaust air flow 120 through the flow chamber 128 ,
• the upper sides of the flow guide elements 132 each form a flow guide surface 135, which directs the exhaust air flow 120 toward the constricted region 140.
• a precoat feed device 144 is arranged, which discharges a precoat material into the exhaust air flow 120 continuously or at intervals.
• the precoat feed device 144 can be designed, for example, as a precoat spray nozzle which discharges the precoat material in the form of a spray into the exhaust air flow 120.
• the arrangement of the precoat supply device 144 at the constricted region 140 of the flow path of the exhaust air flow 120 has the advantage that there due to the increased flow rate of the exhaust air flow 120 and As a result of the small passage cross-section, turbulences in the exhaust air flow are created, which ensure swirling of the precoat material in the exhaust air flow 120 and thus ensure particularly good distribution of the precoat material in the exhaust air flow 120.
• the precoat feed device 144 is connected to a precoat feed line (not shown) which supplies the precoat material in a flowable state by means of a precoat feed pump (not shown) from a precoat storage container (not shown).
• any medium which is capable of absorbing the liquid fraction of the wet-paint overspray can be used as the precoat material.
• Particularly suitable precoat materials are, for example, lime, aluminum silicates, aluminum oxides, silicon oxides, powder coating or the like.
• aqueous dispersions of the materials mentioned are used.
• the filters following the precoat feed device 144 are not to be precoated, but merely moistened, only one moistening medium can be introduced into the exhaust air flow 120 by means of the precoat feed device 144.
• a Abtrvorrichtu ⁇ g 145 for separating wet paint overspray from the exhaust air stream 120 is provided on both sides of the narrowed portion 140 respectively.
• the separating devices 145 each comprise a plurality of regenerable surface filters 146 arranged at the two opposite vertical side walls 130 of the flow chamber 128 and spaced apart in the conveying direction 106, which project with their filter elements 148 into the lower section 138 of the flow chamber 128 (see in particular FIGS. 1, 2 and 4).
• regenerable surface filters 146 is shown in detail in FIGS. 6 and 7.
• Each of the regenerable surface filters 146 comprises a hollow base body 150, on which a plurality, for example four, filter elements 154 are held.
• the filter elements 154 are formed, for example, substantially plate-shaped and, as can be seen from Fig. 6, preferably a serrated cross section in order to increase the available filter surface 156.
• the filter elements 154 may be formed, for example, as plates of sintered polyethylene, which are provided on their outer surface with a membrane made of polytetrafluoroethylene (PTFE).
• PTFE polytetrafluoroethylene
• the filter elements 154 are formed from a nonwoven fabric with a PTFE coating,
• the PTFE coating serves to increase (ie, decrease the permeability of) the filter class of the surface filter 146 and also to prevent the permanent adhesion of the wet paint overspray separated from the exhaust air stream 120.
• Both the base material of the filter elements 154 and their PTFE coating have a porosity, so that the exhaust air can pass through the pores into the interior 176 of the respective filter element 154.
• the same is further provided with a barrier layer of the output in the exhaust air precoat material.
• this barrier layer is formed simply by deposition of the precoat material emitted into the exhaust air flow 120 on the filter surface 156.
• the amount of precoat material dispensed into the exhaust stream 120 is sized such that the thickness of the precoat material barrier layer on the filter elements 154 of the regenerable surface filters 146 is in the range of, for example, about 150 ⁇ m to 200 ⁇ m.
• the exhaust stream 120 passes over the filter surfaces 156 of the filter elements 154 of the regenerable surface filter 146 with both the entrained precoat material and the entrained wet paint overspray deposited on the filter surfaces 156 and passes through the porous filter surfaces 156 into the interior spaces 176 of the filter elements 154 that are connected to the cavity within the body 150.
• the cleaned exhaust air flow 120 thus passes through the main body 150 in each case an exhaust air pipe 158, which leads from the respective regenerable surface filter 146 to a side adjacent to a vertical side wall 130 of the flow chamber 128 parallel to the conveying direction 106 extending exhaust duct 160.
• the exhaust air cleaned from the wet paint overspray from the two exhaust air ducts 160 at least partially returns to the air flow generating device 118, which again cleans the cleaned exhaust air via a supply line 162 to the application area 108 in the paint booth 110 feeds.
• Another part of the cleaned exhaust air stream is discharged via an exhaust fan 164 in an exhaust duct 166 to the environment.
• the majority of the air passed through the application area 108 is thus guided in a circulating air circuit 170 which comprises the air flow generating device 118, the supply line 162, the application area 108, the flow chamber 128 and the exhaust air ducts 160, thereby avoiding constant heating of freshly supplied supply air and thus the energy costs are lowered significantly.
• the guided in the circulating air circulation 170 air is not moistened when separating the wet paint overspray, so that no devices for dehumidifying the air circulated in the circulating air 170 are required.
• the regenerable surface filters 146 are cleaned by compressed air pulses at certain time intervals when their wet paint overspray load has reached a predetermined level.
• this cleaning may be done once per working shift, i. twice to three times per working day.
• the required compressed air pulses are generated by means of a compressed air reservoir 172 which is arranged on the main body 150 of the respective regenerable surface filter 146 and is capable of delivering compressed air pulses to compressed air pipes 174 which run within the respective base body 150 and from the compressed air reservoir 172 into the interior spaces 176 of the filter elements 154 lead.
• the compressed air pulses pass through the porous filter surfaces 156 into the outer space of the filter elements 154, whereby the barrier layer of precoat material and the wet paint overspray deposited on the filter surfaces 156 is detached from the filter surfaces 156, so that the filter surfaces 156 are returned to their depleted original state.
• the flow direction of the compressed air through a regenerable surface filter 146 during cleaning is shown in FIG. 7 by the arrows 177.
• the supply of compressed air in the compressed air reservoirs 172 is supplemented by compressed air supply lines (not shown) from an on-site compressed air network.
• regenerable surface filter 146 are rinsed by means of a suitable rinsing device at predetermined intervals to remove the deposited on the filter surfaces 156 wet paint overspray.
• the material cleaned from the filter surfaces 156 of the regenerable surface filters 146 passes to an accumulation belt 178 disposed at the bottom of the flow chamber 128, for example, via a driven roller 180 and a non-driven one Deflection pulley 182 circumferential, endless belt is formed.
• the driven roller 180 is rotated by means of a drive motor 184 to move the collecting belt 178 along the conveying direction 106 in motion.
• the collecting belt 178 by means of the collecting belt 178, the material obtained from the regenerable surface filters 146 on the surface of the collecting belt 178, which comprises precoat material and deposited wet paint overspray, is transported to a separating device (not shown) from which this material (for example Scrapers) of the collection tape 178 dissolved, collected and optionally supplied to further use.
• this material for example Scrapers
• the collection belt 178 also receives a portion of the wet paint overspray which passes directly from the exhaust stream 120 to the collection belt 178 before the exhaust stream 120 reaches the regenerable surface filters 146.
• regenerable surface filters 146 usable in the apparatus 126 is shown in FIGS. 8-10.
• the regenerable surface filter 146 shown in FIGS. 8 to 10 comprises a substantially cylindrical filter element 154 'instead of a plurality of vertically aligned, plate-shaped filter elements arranged side by side, which also has a serrated filter surface 156 in order to increase the available filter surface 156 having.
• a rinsing liquid ring line 186 is provided for cleaning the regenerable surface filter 146 in this embodiment, which rinsing liquid by provided on the radial inside of the rinsing liquid ring line 186 Spülflüs- stechniksö réelleen against the filter surface 156 of Filter element 154 'is injected so that the rinsing liquid detaches the barrier layer and the wet paint overspray deposited thereon from the filter surface 156 and transported onto the collection belt 178.
• a second embodiment of a system 100 for painting vehicle bodies 102 which is illustrated in FIGS. 11 to 14, differs from FIG The first embodiment described above is characterized in that the flow guide members 132 separating the lower portion 138 from the upper portion 136 of the flow chamber 128 of the wet paint overspray separation apparatus 126 are not substantially horizontal in this second embodiment as in the first embodiment but, as best seen in Fig. 11, are inclined to the horizontal so as to drop toward the narrowed portion 140.
• the angle of inclination to the horizontal is preferably about 5 ° to about 30 °.
• This inclination of the flow directors 132, and thus the flow guide surfaces 135 at the top thereof, provides a funnel-shaped configuration of the lower portion of the upper portion 136 of the flow chamber 128, which smoothes out the flow of air toward the constricted portion 140 and the amount of swirling at the top the flow guide 132 is reduced. In this way, a lesser proportion of the wet paint overspray is already deposited on the flow guide surfaces 135 before the exhaust air flow 120 reaches the lower section 138 of the flow chamber 128.
• the flow directors 132 are disposed slightly higher inside the flow chamber 128 than in the first embodiment.
• FIGS. 11 to 14 of a system 100 for painting vehicle bodies 102 with respect to Structure and function with the illustrated in FIGS. 1 to 10 first embodiment, the above description of which reference is made.
• a third embodiment of a system 100 for painting vehicle bodies 102 illustrated in FIGS. 15 to 18 differs from the second embodiment described above in that the narrowed region 140 is not formed merely by a gap 142 between the opposite edges of the flow guide elements 132 but comprises a downwardly extending from the opposite edges of the flow guide elements 132 exhaust duct 188 which is bounded on its two longitudinal sides by vertical, extending in the conveying direction 106 shaft side walls 190.
• a vertical gap 192 is formed, through which the exhaust air flow 120 from the constricted region 140 in the lower portion 138 of the flow chamber 128 exits, the lower portion 138 of the flow chamber 128 in this embodiment is divided into two each arranged on one side of the exhaust duct 188 portions 138a, 138b.
• the filter elements 154 of the regenerable surface filters 146 do not extend in a substantially horizontal direction into the lower portion 138 of the flow chamber 128, but rather are inclined to the horizontal, preferably at approximately the same angle as the flow guide surfaces 135 of the flow directors 132nd This angle of inclination to the horizontal is preferably in the range of about 5 ° to about 30 °.
• the base bodies 150 of the regenerable surface filters 146 and the upper regions of the side walls 130 of the lower portion 138 of the flow chamber 128 are not vertically aligned, but tilted at an acute angle to the vertical, which corresponds to the angle of inclination of the filter elements 154 and the flow guide surfaces 135 relative to the horizontal.
• regenerable surface filters 146 are particularly well protected against objects falling off of the application area 108.
• the upper portion 136 and the lower portion 138 of the flow chamber 128 fluidly decoupled from each other, so that the exhaust air flow in the lower portion 138 of the flow chamber 128 is largely independent of the flow conditions in the upper portion 136 of the flow chamber 128.
• the third embodiment shown in FIGS. 15 to 18 is the right one for a plant 100 for painting vehicle bodies 102 Structure and function with the second embodiment shown in FIGS. 11 to 14, to the above description to which reference is made.
• a fourth embodiment of a system 100 for spray painting vehicle bodies 102 which is illustrated in FIGS. 19 to 22, differs from the first embodiment described above in that the device 126 for separating wet paint overspray from the exhaust air flow 120 is not symmetrical to the longitudinal center plane 194 of the paint booth 110 is formed, but asymmetrical to this longitudinal center plane 194th
• the regenerable surface filters 146 are disposed only on one side of the longitudinal center plane 194 (namely, on the left side in FIG. 19).
• only a single exhaust duct 160 is provided, which is also not laterally disposed outside the side wall 130 of the flow chamber 128, but instead integrated into the flow chamber 128 and disposed directly under one of the flow guide 132, so that the relevant flow guide 132 a upper limit of the exhaust duct 160 forms.
• the regenerable surface filters 146 are not connected to the exhaust duct 160 via exhaust pipes 158 in this embodiment, but are disposed directly on a lower boundary wall 196 of the exhaust duct 160, wherein the filter elements 154 of the regenerable surface filter 146 in a substantially vertical direction from the lower boundary wall 196 of the exhaust duct 160 in the lower portion 138 of the flow chamber 128 hang down. By means of this suspended arrangement, a particularly efficient cleaning of the regenerable surface filter 146 is achieved.
• the side of the lower portion 138 of the flow chamber 128 opposite the side of the flow chamber 128 provided with the regeneratable surface filters 146 is separated from the portion of the lower portion 138 of the flow chamber 128 through which the exhaust air flow 120 passes through a vertical partition wall 198.
• This severed region 200 is bounded at the top by one of the flow guide elements 132 and extends downwardly to the bottom 202 of the flow chamber 128.
• This separated from the flow-through region of the flow chamber 128 area 200 can be used, for example, for receiving auxiliary equipment, such as blowers, storage tanks, pumps or the like.
• the separated area 200 is used as an air duct, for example as an additional exhaust air duct, Frischluftzu Switzerlandkanal or Ab Kunststoffab USAkanal.
• the flow-through portion of the lower portion 138 of the flow chamber 128 is bounded below by the collecting belt 178.
• the mobile collection container 206 is exchanged for an empty mobile collection container 206 and the filled mobile collection container 206 is moved to a collection and recycling station (not shown).
• this embodiment is particularly compact and is particularly suitable in confined spaces.
• FIGS. 19 to 22 is the same in structure and function as in the first embodiment shown in FIGS. 1 to 10, the above description of which is incorporated herein by reference.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)
• Coating Apparatus (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)
• Photoreceptors In Electrophotography (AREA)
• Discharging, Photosensitive Material Shape In Electrophotography (AREA)
• Electrophotography Configuration And Component (AREA)
• Fixing For Electrophotography (AREA)

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• 2005
  • 2005-03-24 DE DE102005013711.3A patent/DE102005013711B4/de not_active Expired - Lifetime
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