Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
  • F24F13/28—Arrangement or mounting of filters
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
  • F24F13/20—Casings or covers
• • 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
  • B05B14/44—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths using walls specially adapted for promoting separation of the excess material from the air, e.g. baffle plates
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B16/00—Spray booths
  • B05B16/40—Construction elements specially adapted therefor, e.g. floors, walls or ceilings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B16/00—Spray booths
  • B05B16/60—Ventilation arrangements specially adapted therefor
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
  • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering

Definitions

• the invention relates to a housing or a chamber for receiving filters, heat exchangers, humidifiers, evaporators, air conditioners, fans, blower and suction devices for laden with aggressive and abrasive media such as solvent air streams from industrial plants, such as painting, drying , Coating or electroplating plants, with a composed of vertical and horizontal struts cuboid support frame whose side surfaces are covered by walls.
• the invention further relates to a
• Lightweight wall for repairing a housing exposed to aggressive and abrasive media, such as solvents and / or solid particles, with a treatment plant is connected by ventilation ducts, wherein the housing comprises a composed of vertical and horizontal struts cuboid support frame and the side surfaces and top surface of the housing are covered by walls.
• the exhaust air contains a considerable moisture content and is not free from chemically aggressive solvents, pickling residues and abrasive solids.
• the exhaust air prevails in the heat wheel chambers, a relatively large pressure gradient from the exhaust side to the supply air side, whereby corresponding pressure fluctuations in the heat wheel can not be excluded.
• the known hillstren consist of a steel frame construction of interconnected struts or beams on which cladding panels are attached, and a trough for collecting and removing the separated from exhaust condensates.
• a liquid-tight housing for an industrial plant, in particular heat exchanger system known whose side walls are mounted tightly on the floor of the room.
• the lower edge regions of the side walls are set in a cross-sectionally U-shaped trough, wherein the inner vertical leg of the trough is shorter than the outer vertical leg.
• the gap between the legs is with a sealing adhesive of a silane-modified polymer or polysulfide-based material.
• Other known housings for industrial plants suggest frame structures made of galvanized steel or stainless steel (US Pat. No. 4,502,410 A).
• the fairing plates for the chambers also have a considerable weight, large dimensions and are therefore correspondingly complex and unwieldy in the assembly site.
• the present invention seeks to provide a housing for filters, heat exchangers, humidifiers, evaporators, air conditioners, fans, blower and suction for aggressive and abrasive media as solvent and / or solid particles laden air streams from industrial plants and their repair to improve such that they liquid and pressure tight and at the same time largely corrosion resistant to chemical, mechanical and abrasive attacks while reducing maintenance costs, improving assembly and increasing the period of use and the saving of material and cost and the walls of the housing are easily replaceable.
• each panel is provided along its circumference with a cassette-like frame, the housing inside with the panel along the longitudinal and transverse sides by fluid and adhesion with an adhesive and a fastener liquid and pressure-tight, and forming abutting frame or frame and struts joints, which are liquid-tight and pressure-tight sealed by fabric or positive locking and adhesion with an adhesive or sealant and sealed inside the housing with a sealing layer liquid-tight.
• the adhesive for the material bond between frame and panel comprises 1- or 2-component epoxy resin and / or polyurethane and / or polyurea formulations or mixtures / mixtures of these resin groups having elastic tenacious properties, so that occurring forces can be absorbed by the joints and the housing is securely sealed against internal pressure and fluid leakage.
• the frictional connection between the frame and the panel is produced by fastening means, such as blind rivets, which are arranged at regular intervals from one another along the longitudinal and transverse sides and are introduced into the panel vertically through holes in the frame.
• fastening means such as blind rivets
• the adhesive for the material bond between the frame with each other or the frame and the struts of the support frame is a 2-component epoxy resin formulation containing a mixture of 1.0 to 70 wt. % Bisphenol A (epichlorohydrin) having an average molecular weight ⁇ 700, 1.0 to 50% by weight bisphenol F (epichlorohydrin) having an average molecular weight ⁇ 700, 0.1 to 10.0% by weight Epoxy resin (A / F) adduct with phenolic resin, 1.0 to 29.0% by weight of 6-hexane diol diglycidyl ether, 1.0 to 20.0 Gew.
• Bisphenol A epichlorohydrin
• bisphenol F epichlorohydrin
• % p-tert-butylphenol glycidyl ether 1.0 to 20.0% by weight of polypropylene glycol diglycidyl ether, 5.0 to 70% by weight of filler and 0.1 to 5.0% by weight of additives as component A and as component B 1.0 to 29% by weight of benzyl alcohol, 1.0 to 29.0% by weight of isophoronediamine, 0.1 to 5.0% by weight of 3,6-diazaoctamethylenediamine, 0.1 to 5.0% by weight % Of 4,4'-isopropylidenediphenol, 0.1 to 5.0% by weight of 2-piperazol-1-ylethylamine, 0.1 to 5.0% by weight of polyaminoamide, 0.1 to 5.0% by weight % p-tert-butylphenol, 0.1 to 10.0% by weight of salicylic acid and 0.1 to 5.0% by weight of additives.
• this adhesive has an extraordinary high adhesive strength on the metal surfaces of the joints forming angle profiles and at the same time has a high chemical resistance to the aggressive solvents in the exhaust air of paint shops.
• a rubber-elastic seal instead of the adhesive, which is inserted into the joints and by between the force applied to the adjacent frame or the frame and the struts force fit by locking or screwing in the clamping state are kept sealing.
• the seal for the housing-interior region of the joints and cover layer of the sandwich panel consists in a further embodiment of the invention of a 2-component
• the inside profile body is completely embedded with its additional fastening means in an abrasion-resistant, impact-resistant, chemically resistant and adhering to the ground seal.
• the frame is an L-profile body
• the aligned to the housing interior short leg glued to the inner cover layer of the panel along its transverse and longitudinal side and by means of introduced into the holes of the leg fasteners on the respective Panel is held and whose long leg is connected to the end face of the panel through the gluing, wherein the long leg is arranged towering relative to the outer panel surface and holes for the groove perpendicular to the locking or screw means for frictionally connecting two abutting long legs of adjacent L- Profile body has.
• the frame consists of an angle profile body having the same length, the leg aligned with the interior of the housing being connected to the inner cover layer of the panel along its transverse surface. and longitudinal side glued and held by means introduced through the holes in the leg fastening means on the respective panel and having a length corresponding to the length of the end face connected by an adhesive leg, wherein the front side associated leg is arranged towering relative to the outer panel surface and has bores for the recess lying perpendicular to the joint or screw means for frictionally connecting two abutting legs of adjacent angle profile body.
• the frame can also be formed from a U-profile body, which is aligned with the inner lining layer of the panel glued to the inner cover layer of the panel along its transverse and longitudinal side and held by means introduced into holes in the limb fastening means on the respective panel and the central web with the end faces the panels is connected by the bond, wherein the central web opposite the outer panel surface arranged towering and provided with holes for the perpendicular to the joint latching or screw means for non-positive connection of two abutting center webs of the adjacent U-profiles.
• Both variants have the advantage that the center webs of the U-profile or the long legs of the L-angle both in the transverse and in the longitudinal direction of the panel stabilizing against pressure fluctuations and the load at the same time on the inside legs and outer screw the center webs or long leg is evenly distributed.
• the Frame should also be a double-T-profile, which is located to the housing interior located leg and the housing outside leg each bonded to the outer layers of two arranged on impact panels along their longitudinal and transverse sides and held by the introduced into holes in the legs fastening means on the respective panel and the central web is connected on both sides with the end faces of the two panels by the bond.
• a further alternative embodiment provides that the frame is formed from a Z-profile, the leg located to the housing interior glued to the inner cover layer of one panel and the outside of the housing leg with the outer cover layer of the other panel along its longitudinal and transverse sides and are held by the introduced into holes in the legs fastening means on the respective panel and the central web is connected on both sides with the end faces of the two panels by the bond.
• Fasteners in the housing inner and outer thighs and the metal strip along the transverse and longitudinal sides of the panel are arranged evenly spaced, are.
• the locking or screw joints for the joints along the transverse and longitudinal sides of the panels have an equal distance from each other.
• Particularly suitable materials for the frame are angle profiles made of metal, preferably galvanized steel or simple structural steel. Due to the perfect embedding of the frame in the adhesive and coating material, the frame is well protected against corrosion.
• frames made of suitable plastic which has the advantage that the material connection between the frame and the panel can be made by a weld.
• Each panel is in a sense surrounded by a profile body cassette-like, so that the flexural rigidity of the panel is increased accordingly and easily pressure fluctuations can be accommodated without fluttering of the walls.
• the longitudinal and width dimensions of the panels can also be easily large-sized, thereby increasing the degree of prefabrication and simplifying on-site assembly.
• the lightweight wall according to the invention makes it possible, a replacement element for at least one wall of at least one polypropylene sandwich panel with glass fiber reinforced Cover layers and a honeycomb-like core form, wherein the sandwich panel is enclosed by a frame in a cassette, which by material and adhesion with an adhesive and a
• the frame consists of a profile body whose inner leg rests on the housing interior facing top layer and its other leg opposite to the housing interior facing away from the top layer of the panel vertically in one Projecting dimension that allows a non-positive connection with the struts or the adjacent wall section or walls.
• the lightweight wall can also be composed liquid-pressure and pressure-tight from several exchange elements (47), wherein the exchange elements with each other and the struts with the exchange elements form vertical and horizontal joints, which glued to the adhesive in shock or sealed by a sealant and additionally secured by perpendicular to the joints arranged frictional locking or screwing means, the joints are inside the housing provided with a seal.
• an exchange element of several sandwich panels merge, which form at their joints vertical and horizontal joints, which are bonded by a 2-component epoxy adhesive to shock and additionally secured by perpendicular to the joints frictional locking or screwing means, the joints inside the housing with a seal from a 2-component epoxy resin coating are provided.
• the replacement element for the lightweight wall can be formed from a single large-sized sandwich panel.
• a further preferred embodiment of the lightweight wall according to the invention provides that the profile body is an L-profile sheet, the housing interior aligned short leg along its transverse and longitudinal side has holes for fastening means and its long leg with holes for the locking or screwing is provided for frictionally connecting abutting long leg of two arranged on impact L-profile sheets.
• the profile body can alternatively consist of an angle profile body with legs of equal length, the leg aligned with the interior of the housing is adhesively bonded to the inner cover layer of the panel along its transverse and longitudinal sides and is held on the respective panel by the fastening means introduced into the holes in the leg, and has a length equal to the length of the other connected to the end face by gluing Leg corresponds, wherein the front side associated leg is arranged towering relative to the outer panel surface and has holes for the groove perpendicular to the locking or screw means for frictionally connecting two abutting legs of adjacent angle profile bodies.
• the holes in the housing-side leg of the profile body for receiving the fastening means along the transverse and longitudinal sides of the panel are arranged evenly spaced. This distributes the load evenly over the surface.
• the liquid and pressure-tight connection for the material connection between the frame and panel according to another embodiment of the lightweight panel of the invention based on an elastic adhesive toughened 1- or 2-component epoxy resin and / or polyurethane and / or polyurea formulations or mixtures / Mixtures of these resin groups.
• the adhesive for the liquid and pressure-tight connection between the frame of the panels with each other or the frame and the struts of the support frame of a 2-component epoxy resin formulation containing a mixture of 1.0 to 70 wt .-% bisphenol A (epichlorohydrin) with a middle
• Molecular weight ⁇ 700 1.0 to 50 wt .-% bisphenol F (epichlorohydrin) having an average molecular weight ⁇ 700, 0.1 to 10.0% by weight of epoxy resin (A / F) adduct with phenolic resin, 1.0 to 29.0% by weight of 6-hexane-diol diglycidyl ether, 1.0 to 20.0% by weight.
• % p-tert-butylphenol glycidyl ether 1.0 to 20.0% by weight of polypropylene glycol diglycidyl ether, 5.0 to 70% by weight of filler and 0.1 to 5.0% by weight of additives as component A and as component B 1.0 to 29% by weight of benzyl alcohol, 1.0 to 29.0% by weight of isophoronediamine, 0.1 to 5.0% by weight of 3,6-diazaoctamethylenediamine, 0.1 to 5.0% by weight .-% 4,4 '- isopropylidenediphenol, 0.1 to 5.0 wt .-% 2-piperazi-l-ylethylamine, 0.1 to 5.0 wt .-% polyaminoamide, 0.1 to 5.0 weight % p-tert-butylphenol, 0.1 to 10.0% by weight of salicylic acid and 0.1 to 5.0% by weight of additives.
• the housing-side region of the joints is covered by a 2-component epoxy coating comprising a mixture of a 2-component epoxy resin adhesive containing a mixture of 1.0 to 70 wt .-% bisphenol A ( epichlorohydrin) having an average molecular weight ⁇ 700, 1.0 to 50 wt .-% bisphenol F (epichlorohydrin) having an average molecular weight ⁇ 700, 0.1 to 10.0 wt .-% epoxy resin (A / F) adduct with phenolic resin, 1.0 to 29.0% by weight of 6-hexanediol diglycidyl ether, 1.0 to 20.0% by weight of p-tert-butylphenol glycidyl ether, 1.0 to 20.0% by weight Polypropylene glycol diglycidyl ether, 5.0 to 70 wt .-% filler and 0.1 to 5.0 wt .-% additives as component A and as component B 1.0 to 29 wt
• FIG. 1 is a perspective view of the FIG.
• FIG. 2 shows a view of a sandwich panel with a frame arranged along the transverse and longitudinal sides
• FIG. 3 shows a typical arrangement of sandwich panels in a side wall of the housing
• FIG. Fig. 4 is a sectional view of a
• Fig. 5 is a schematic representation of a joint connection of two horizontally arranged
• FIG. 6 shows a schematic representation of a joint connection between a strut of the frame and a sandwich panel along the line C-C according to FIG. 3, [0031] FIGS. 7a to 7h variants of different profile bodies for the frame, FIG.
• Fig. 8 is a lightweight wall as a replacement element for a wall portion of a housing to be repaired
• Fig. 9 is a composite of several sandwich panels exchange element.
• the laden with aggressive solvents, salt residues, paint and other solid particles exhaust air flows to the housing 1 according to the invention arranged on the front side rotary heat exchanger 2 and is passed through the heat wheel 3.
• the exhaust air is doing a part of its heat to the heat wheel 3 from that occurs in its rotation in heat exchange with the sucked from the upper housing chamber 5 fresh air and preheats it accordingly before it is fed into the painting.
• the impurities are deposited on the inner surfaces of the housing walls 4 as condensate, which is discharged through a non-illustrated sequence in the bottom of the housing 1.
• the housing 1 must be made absolutely pressure and liquid-tight, so that the solvents, salts, coagulants and solid particles do not escape into the atmosphere and can be safely removed during cleaning of the housing 1 with water under high pressure.
• Fig. 1 the basic structure of the housing 1 according to the invention is shown, which consists essentially of a cuboid support frame 6 made of galvanized steel profile and the support frame 6 attached front and rear side walls 7.1, 7.2, 7.3 and 8.1, 8.2, 8.3, End walls 9 and 10, one of the housing 1 in a lower area acted upon with exhaust air 11 and an upper area acted upon with fresh air 12 dividing partition 13 and a top wall 14.1, 14.2 and 14.3 composed.
• the support frame 6 is composed of vertical struts 15a, 15b, 15c, 15d, 15e, 15f, 15g and 15h, horizontal upper struts 16a, 16b, 16c, 16d, 16e, 16f, 16g, 16h, 16i and 16j and horizontal lower struts 17a , 17b, 17c, 17d, 17e, 17f, 17g, 17h, 17i and ljd.
• the lower struts 17a, 17b, 17c, 17d, 17e, 17f, 17g, 17h, 17i and 71j lie on the floor 18 and are connected to this liquid and pressure-tight.
• the division of the support frame 6 in these vertical and horizontal struts is exemplary and may have more or less struts as required.
• the heat wheel 3 passes through the lower and upper portion 11 and 12 of the housing during its rotation.
• the heat wheel 3 initially transports the exhaust air into the lower area 11 and deposits any impurities present here.
• Fig. 2 shows an example of a polypropylene sandwich panel 19 with glass fiber-reinforced outer layers 20a and 20b and a honeycomb-like core 21.
• the sandwich panel 19 is bordered along its longitudinal side LS and transverse side QS of an L-profile 22 made of galvanized steel and forms a frame 23.
• the L-profile 22 has a short leg 22a and a long leg 22b.
• the leg length L of the long leg 22b is dimensioned so that it is significantly greater than the thickness D of the sandwich panel 19.
• the ends of the short leg 22a of the L profiles 22 for the longitudinal side LS and transverse side QS of the sandwich panels 19 are mitred, for example cut so that they can put together the encircling frame 23 for the panel 19.
• Holes 24 for fixing means 25, for example blind rivets, are introduced into the short limbs 22a at a uniform spacing from one another, which additionally ensure a frictional connection with the sandwich panel 19.
• the thus-cut L-profiles 22 are cleaned and the short legs 22a of the profiles 22 along the longitudinal side LS and transverse side QS of the panel 19 with the housing inner layer 20a and the end face ST (Fig. 7a-7g) of the panel with the long leg 22b by means of an adhesive / sealant KM1 made of an elastically toughened 1- or 2-component epoxy resin and / or polyurethane and / or polyurea formulation glued, so that the frame 23 is connected by an adhesive layer KS along the circumference of the panel 19 cohesively.
• the long leg 22b is opposite to the inside of the housing outwardly facing cover layer 20b of the panel 19 due to its significantly greater length L perpendicular from the panel 19 and has in the protruding area a plurality of evenly along the longitudinal and transverse sides of the panel 19 distributed holes 26 for the Recording a locking or screwing 27th
• the latching means may be those as described in detail in EP 2 239 396 B1.
• the fastening means 25 (see also FIGS. 7a to 7g) are introduced into the bores 24, which additionally ensure a frictional connection between the L-profiles 22 and the panel 19 along its circumference.
• the framed sandwich panels 19a to 19c are stacked along the transverse direction QR and longitudinal direction LR of the housing 1 and abutting each other so as to form horizontal joints 28 and vertical joints 29, the vertical joints 29 of the panels being in different positions over the height of the panels Housing abutting panels 19a to 19c do not overlap.
• the frame 23 is held by the adhesive layer KS along the circumference on the panel 19 cohesively and liquid and pressure-tight.
• the abutment surfaces of the two L-profiles 22 are cleaned, applied to the abutment surfaces an adhesive KM2 from a 2-component epoxy resin formulation and then glued to form a joint adhesive layer FKS.
• the 2-component epoxy resin adhesive consists of a mixture of 1.0 to 70 wt .-% bisphenol A (epichlorohydrin) having an average molecular weight ⁇ 700, 1.0 to 50 wt .-% bisphenol F- ( epichlorohydrin) having an average molecular weight ⁇ 700, 0.1 to 10.0% by weight of epoxy resin (A / F) adduct with phenolic resin, 1.0 to 29.0% by weight of 6-hexane diol diglycidyl ether, 1.0 up to 20.0 wt.
• bisphenol A epoxy resin
• a / F epichlorohydrin
• % p-tert-butylphenol glycidyl ether 1.0 to 20.0% by weight of polypropylene glycol diglycidyl ether, 5.0 to 70% by weight of filler and 0.1 to 5.0% by weight of additives as component A and as component B 1.0 to 29% by weight of benzyl alcohol, 1.0 to 29.0% by weight of isophoronediamine, 0.1 to 5.0% by weight of 3,6-diazaoctamethylenediamine, 0.1 to 5.0% by weight % Of 4,4'-isopropylidenediphenol, 0.1 to 5.0% by weight of 2-piperazol-1-ylethylamine, 0.1 to 5.0% by weight of polyaminoamide, 0.1 to 5.0% by weight .-% p-tert-butylphenol, 0.1 to 10.0 wt .-% salicylic acid and 0.1 to 5.0 wt .-% additives.
• the vertical joint 29 between the glued-long legs 22b of the L-profile 22 is then secured frictionally outside the housing by the snap-in or screw 27 introduced into the holes 26 (see also FIGS. 7a to 7h).
• Housing inside the joints 28 and 29 are covered by a, for example, 400 ⁇ thick sealing layer VS from a 2-component epoxy resin, so that the short legs 22a are completely enveloped along the joint with the resin.
• the 2-component epoxy resin coating consists of a mixture of a 2-component epoxy resin adhesive containing a mixture of 1.0 to 70 wt .-% bisphenol A (epichlorohydrin) with an average molecular weight ⁇ 700, 1, 0 to 50 wt .-% bisphenol F (epichlorohydrin) having an average molecular weight ⁇ 700, 0.1 to 10.0 wt .-% epoxy resin (A / F) adduct with phenolic resin, 1.0 to 29.0 wt 6- hexane diol diglycidyl ether, 1.0 to 20.0 wt. % p-tert-butylphenol glycidyl ether, 1.0 to 20.0% by weight
• FIG. 5 shows a horizontal joint between superimposed panels 19a and 19c in section along the line BB of FIG. 3. It can be seen that the long legs 22b of the L-profile 22 are parallel along the longitudinal sides LS of the panels 19a, 19 b and 19c extend and the respective locking or screwing means 27 is arranged on the two long legs 22b thereto perpendicular to a plane above the outer cover layer 20b of the panel.
• FIG. 6 shows the connection of the transverse side QS and the longitudinal side LS of a panel 19a to the vertical strut 15a, which is representative of all further vertical struts 15b to 15h.
• the long leg 22b of the L-profile 22 glued along the transverse side QS of the panel 19a forms a vertical joint 30 with the strut 15a (see FIG. 3).
• the connection of the leg 22b to the strut 15a takes place in that a two-component epoxy resin adhesive is applied to the cleaned abutting surfaces of the strut 15a and legs 22b, and then the abutting surfaces are adhesively bonded to form an adhesive layer KS.
• a 2-component epoxy resin adhesive is a mixture of a 2-component epoxy resin adhesive is used, which is a mixture of 1.0 to 70 wt .-% bisphenol A (epichlorohydrin) having an average molecular weight ⁇ 700, 1.0 to 50% by weight of bisphenol F- (epichlorohydri) having an average molecular weight ⁇ 700, 0.1 to 10.0% by weight of epoxy resin (A / F) adduct with phenolic resin, 1.0 to 29, 0% by weight of 6-hexane diol diglycidyl ether, 1.0 to 20.0 wt. % p-tert-butylphenol glycidyl ether, 1.0 to 20.0% by weight
• isophoronediamine 0.1 to 5.0% by weight of 3,6-diazaoctamethylenediamine, 0.1 to 5.0% by weight of 4,4'-isopropylidenediphenol, 0.1 to 5.0% by weight.
• 2-piperazinyl-1-methylamine 0.1 to 5.0% by weight of polyaminoamide, 0.1 to 5.0% by weight of p-tert-butylphenol, 0.1 to 10.0% by weight.
• the leg 22b of the L-profile 22 has a length L, the is matched to the width SB of the strut 15a, so that the leg 22b terminates flush with the strut 15a.
• the length L has such a degree that a frictional connection with the strut 15a can be produced by a fastening means 25, for example blind rivets, with the associated strut.
• a fastening means 25 for example blind rivets, with the associated strut.
• holes 32 are provided in the long leg 22b and in the strut 15a, which are aligned with each other.
• the connection of the longitudinal side LS of the panel to the horizontal struts 16a to 16i corresponds essentially to the connection of the previously described connection for the transverse side QS only with the difference that the number of holes 32 (FIG. 6) and latching or screw 27 along the longitudinal side LS of the panel is larger.
• the side walls 7.1, 7.2 and 7.2 are thus liquid and pressure-tight mounted on the support frame 6 of the housing. This is followed by the assembly of the side walls 8.1, 8.2 and 8.3, the end walls 9 and 10 and the cover walls 14.1, 14.2, 14.3 in the manner described.
• the end wall 10 carries the rotary heat exchanger 2 and is made of sheet steel which is attached to the vertical struts 15d and 15h, and the horizontal struts 16d and 17d, respectively.
• the frame 23 can also consist of a U-profile 33 (FIG. 7b), double-T-profile 34 (FIG. 7c), Z-profile 35 (FIG. 7d), isosceles angular profile 48 (FIG. 7h) or only flat sheet metal strips 36 (FIG. 7e).
• a frame of a U-section 33 is shown in section.
• the U-profile 33 has an inner short leg 33a, which is glued to the cover layer 20a of the panel 19 along its transverse side QS and longitudinal side LS with a polyurethane adhesive and is additionally frictionally held by means of fasteners 25 ,
• the central web 37 of the U-profile 33 is also connected to the front region ST of the panel 19 by bonding with the adhesive KM1.
• the central web 37 projects with respect to the outer panel surface and is provided with the bore 26.
• the holes 26 In the joint area of the two abutting U-profiles 33 are the holes 26 on an axis, so that after bonding the joint 29 in addition a non-positive connection can be made by the perpendicular to the joint located detent or screw 27 between the two central webs 37.
• the housing-inside joints 29 are also provided with a seal VS made of a 2-component expo resin layer as described above.
• Fig. 7d shows a frame 23 in the execution of a Z-profile 35.
• This design is without latching or screw connections.
• the inside leg 38 of the Z-profile 35 is glued to the inner cover layer 20a of the one panel 19a, and the outside leg 39 is glued to the outer cover layer 20b of the other panel 19b.
• the end portions ST of the abutting panels 19a are glued to the central web 40 of the Z-profile.
• the legs 38 and 39 are provided with holes 26, by the corresponding fastening means 25, such as blind rivets, along the longitudinal sides LS and transverse sides QS can be introduced positively into the respective panel.
• the adhesives and sealants correspond to the substance categories described above.
• the frame 23 of a double-T-profile 34 or a sheet metal strip 36 show the Fig. 7c and 7e.
• its inner legs 34a are each connected to the inner cover layers 20a and the outer legs 34b are connected to the outer cover layer 20b through the adhesive layer KS made of the adhesive KM1.
• the legs 34 a and 34 b are anchored by fastening means 25 on the respective panel 19.
• the central web 40 of the double-T-profile 34 is glued on both sides with the end region ST of the abutting panels 19a.
• the adhesive corresponds to the material quality described above.
• the frame 23 is shown in the execution of an angle profile body 48, the legs 49 and 50 are the same length.
• the leg 49 oriented toward the interior of the housing is adhesively bonded to the inner cover layer 20a of the panel 19 along its transverse and longitudinal sides LS and QS and is held on the respective panel 19 by the fastening means 25 introduced into bores 24 of the leg 49.
• the leg 50 has a length SL2 which corresponds to the length SL1 of the leg 49 bonded to the end face ST, the leg length SL2 being at least 30 mm in relation to the leg Thickness D of the panel 19 is larger.
• bores 26 are provided for receiving latching or screwing means 27, which serve for non-positive connection of two abutting in the joint leg 50 adjacent angle profile body 48.
• a damaged by corrosion and thus leaking wall portion of an in-use housing 1 is to be replaced by a lightweight wall 41 of the invention.
• the walls of the housing 1 in operation usually consist of large-sized wall sections 42 with folded in the direction of the housing outside horizontal and vertical edges 43. In these edges 43 of the abutting wall portions 42 holes 44 are introduced. The vertical and horizontal connection of two wall sections 42 with each other by screw 45, which are fixed in the mutually aligned holes 44 of the edges 43 of two abutting wall portions 42 (see Fig. 9) and establish the adhesion.
• edges 43 of the wall portions 42 are also secured by the screw 45 force-fitting.
• the joints 46 of the abutting abutment surfaces of the edges 43 with each other and the abutment surfaces between the struts and the edges 43 are sealed in accordance with liquid and pressure-tight.
• the sealing can be done by gluing or a suitable rubber-elastic sealing material.
• the structure of the as exchange element 47th formed lightweight wall 41 corresponds to the structure of the structure described in Example 1 for the walls 7.1, 7.2, 7.3, 8.1, 8.2, 8.3, 9, 14.1, 14.2 and 14.3.
• the replacement element 41 consists of a single polypropylene sandwich panel 19 with fiberglass-reinforced cover layers 20a and 20b and a honeycomb-like core 21. It is enclosed by a frame 23 in a cassette-like manner, which is adhesively bonded with the adhesive KM1 and additionally by mechanical fastening means 25 along its longitudinal sides LS and transverse sides QS with the panel 19 is frictionally and fluid-tight manner.
• the frame 23 preferably consists of an angle profile in the form of an L-profile 22 or U-profile 33.
• the inner leg 22a of the L-profile 22 or inner leg 33a of the U-profile 33 rests on the inner cover layer 20a of the panel 19 and is glued to this by the adhesive KMl.
• the legs 22a and 33a are additionally frictionally connected by fastening means 25 with the panel 19, so that they ensure a liquid-tight and pressure-tight seal.
• blind rivets are used as fastening means 25.
• the long leg 22b of the L-profile 22 and the middle web 37 of the U-profile 33 are also connected by the adhesive KMl.
• the long leg 22b of the L-profile 22 and the middle web 37 of the U-profile 33 protrude perpendicularly with respect to the outer cover layer 20b of the panel to an extent that frictionally connects the leg 22b or central web 37 with the adjacent edges 43 of Wall sections of the housing or the existing struts of the support frame 6 of the housing 1 is possible.
• the width and length dimension of the cassette-like exchange element 43 are chosen so that they coincide with the dimensions of the wall section to be replaced while maintaining certain tolerances. This replacement element 43 can be easily inserted into the wall region of the housing 1, from which the defective wall section 42 has been removed.
• the long legs 22b and the middle webs 37 are provided with the holes 26 already described, which coincide in their position and alignment with the holes 44 in the edges 43, so that the locking or screw 27 for non-positive connection of the frame 23 with the Edges 43 of the adjacent wall sections 42 can be easily introduced.
• the wall portion 42 to be replaced Before the replacement element 47 can be mounted, the wall portion 42 to be replaced must be detached from the wall and removed. The screw 45 at the edges concerned 43 are released and the sealing of the joints 46 removed. Subsequently, the abutting surfaces of the edges 43 are cleaned.
• the adhesive KM2 (2-component epoxy resin) is applied with the described composition and then the replacement element 47 is inserted into the resulting gap in the wall of the housing 1 in that the bores 26 of the frame 23 of the replacement element 42 and the bores 45 in the edges 43 of the adjacent wall sections 42 are aligned.
• the holes can be pre-drilled or placed on site during assembly.
• the joints 46 are then covered inside the housing by the seal VS also described from the 2-component epoxy resin layer with a thickness of about 400 ⁇ .
• the lightweight wall 41 according to the invention may be formed of a plurality of exchange elements 47, of which in turn each exchange element may be assembled from several sandwich panels.

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• 2012
  • 2012-11-07 DE DE202012010569U patent/DE202012010569U1/de not_active Expired - Lifetime
• 2013
  • 2013-11-05 PL PL13802867T patent/PL2919918T3/pl unknown
  • 2013-11-05 HU HUE13802867A patent/HUE045029T2/hu unknown
  • 2013-11-05 WO PCT/DE2013/000648 patent/WO2014071904A1/de active Application Filing
  • 2013-11-05 EP EP13802867.5A patent/EP2919918B1/de active Active

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