EP3668631A1 - Installation de purification d'air pourvue d'un dispositif de nettoyage de filtre intégré - Google Patents

Installation de purification d'air pourvue d'un dispositif de nettoyage de filtre intégré

Info

Publication number
EP3668631A1
EP3668631A1 EP17754157.0A EP17754157A EP3668631A1 EP 3668631 A1 EP3668631 A1 EP 3668631A1 EP 17754157 A EP17754157 A EP 17754157A EP 3668631 A1 EP3668631 A1 EP 3668631A1
Authority
EP
European Patent Office
Prior art keywords
filter
pocket
air
bag
air purification
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17754157.0A
Other languages
German (de)
English (en)
Inventor
André REMSCHAK
Juergen Wehner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Luwa Air Engineering AG
Original Assignee
Luwa Air Engineering AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Luwa Air Engineering AG filed Critical Luwa Air Engineering AG
Publication of EP3668631A1 publication Critical patent/EP3668631A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H11/00—Arrangements for confining or removing dust, fly or the like
    • 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
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • 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
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • B01D46/121—V-type arrangements
    • 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
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
    • B01D46/682—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by nozzles

Definitions

  • the present invention relates to a
  • Air purification system according to claim 1.
  • the use of air purification systems is particularly important in the textile industry of great importance, since in the manufacture of textile products large amounts of dust and lint are released into the air. If such impurities deposit on the textile yarn, this has a significant negative impact on the quality of the finished textile products.
  • filter plants are usually used in textile production facilities to free the air from the entrained dust and cloth particles.
  • Such filter devices are usually space filling and have meter-high filter walls with filter mats, which are flowed through by the air to be cleaned. The dust and fiber particles entrained in the dirty air are thus deposited on the filter mats.
  • the filter surfaces must therefore be cleaned at regular intervals or freed from deposited dust and fiber materials.
  • cleaning options include about the backwashing or countercurrent blowing, stripping, knocking or suction of the filter surfaces.
  • DE 3 525 656 A1 discloses a scraper which is moved up and down along the surface thereof for cleaning the filter surface in order to scrape off the particles deposited on the filter surface and to convey them to an underlying receiving space.
  • a filter device which has a safety gear with several V-shaped filter-effective niches.
  • the suction nose of a suction organ mounted on a support is inserted into the front of a niche and moved up and down in it.
  • each niche is assigned its own suction or a suction device is responsible for the cleaning of several niches and is driven out after cleaning a niche backwards out of this outside the safety gear horizontally moved sideways to a next niche and forward with the suction nose ahead in the next niche introduced.
  • the suction organs or their carriers are thus moved in three directions in space - vertically up and down within the niches; in the horizontal direction back and forth and sideways back and forth.
  • space - vertically up and down within the niches in the horizontal direction back and forth and sideways back and forth.
  • the air purification system according to claim 1 has a partition, which is provided for the spatial separation of an upstream dirty air space of a downstream clean air space.
  • upstream and downstream in the present application always refer to the direction of the air flow, which flows from the sides of the dirty air space through filter-active sections of the dividing wall into the clean air space.
  • the partition comprises a support frame defining a longitudinal plane and a plurality of filter boxes projecting from the support frame in the direction of the dirty air space.
  • Said filter boxes each have at least one, preferably two, from the support frame in the dirty air space extending filter box wall or filter box walls and are open in the downstream clean air space.
  • the filter boxes are only on the back, so open in the clean air space, while upstream through filter box walls and top and bottom are limited by an upper or lower preferably airtight cover.
  • the filter box walls each carry at least one filter mat (although two filter box walls can also carry a common filter mat).
  • the filter mats are the Purification of the air, which means that they are at least partially permeable to air.
  • Such filter mats are well known to those skilled in the art and may include, for example, a metallic or textile fabric (especially a nonwoven fabric, needle felt and plush) or other air-permeable, filter-effective substrate on the upstream side of the deposited from the air to be filtered impurities such as fibers, dust particles or dergl. , be deposited.
  • filter-effective or filter-active surfaces or “filter surfaces”
  • filter surfaces are usually sealed, so impermeable to air, separated by the partition from the clean air space. Air from the dirty air space can thus only pass through the filter surfaces in the clean air space due to the partition.
  • dirty air space and clean air space are arranged in a common box, which is positioned on a continuous or at least partially open, for example, as (grid) grate formed bottom surface.
  • the support frame of the partition preferably defines in this case the outer circumference of the partition and corresponds in its width and height of the width and height of the box.
  • the support frame can be mounted vertically on the floor surface, whereby it is bounded below by the bottom surface, the top through the ceiling and on both sides by the side walls of the box.
  • dust and fiber-laden air is passed from the dirty air space through the filter mats in the clean air space, wherein the entrained dust and fiber materials are deposited on the filter mats.
  • "Guided" means in this context that, for example, due to a pressure difference between the dirty air space and the clean air space, an air flow is generated.
  • Vacuum source such as a fan to be connected.
  • the filter boxes are arranged on the support frame of the partition so that mutually facing filter box walls of adjacent filter boxes each form a filter bag.
  • a filter pocket thus generally extends in the vertical direction from the lower end to the upper end of the filter boxes and has a depth measured perpendicular to the longitudinal plane.
  • the filter mats are attached to a self-supporting frame, which is preferably part of the filter box wall and optionally additionally reinforced with connecting struts.
  • a frame construction as a support for the filter mats has compared to the usual Expanded metal supports have the advantage that the clear net filter surface can be increased.
  • the air purification system includes a
  • Filter cleaning device with a horizontal rail on which a carriage is guided in the horizontal direction movable back and forth, and attached to the car vertical rail.
  • a suction nozzle is guided vertically up and down on the vertical rail in a vertical direction and is further movable from a filter pocket into an adjacent filter pocket.
  • Filter cleaning device is usually arranged in the dirty air space.
  • the horizontal rail normally extends parallel to the support frame and the vertical rail is normally located upstream of the partition wall or filter boxes.
  • the suction nozzle projects with its free end into a filter pocket and is usually at the opposite other end via a flexible air discharge line, e.g. an exhaust hose, connected to a vacuum source.
  • a flexible air discharge line e.g. an exhaust hose
  • the suction nozzle on one or more suction port (s), through which deposited on the filter mats filter material (such as fiber material and dust) can be sucked.
  • the filter bags each have a downstream side at least approximately airtight pocket base portion of a bag bottom and two of the bottom of the bag in the direction Dirty air space is defined along a respective filter box wall projecting legs and extends over the entire height of the respective filter bag.
  • the pocket base portion of this Due to the at least approximately airtight properties of the pocket base portion of this is usually not easily accessible to the suction nozzle of the filter bag area of the filter bag; In this respect, there is little or no air flow. This prevents the suction and adhesion of fiber material in the region of the pocket bottom, whereby the amount of filter material depositing there can be greatly reduced.
  • filter material accumulates in the bag bottom not only increased at the bottom of the bag itself, but also at the adjacent wall of the bag bottom wall sections of the filter bag.
  • these sections adjacent to the bottom of the pocket are, according to the invention, also part of the at least approximately airtight pocket base section and defined as its "legs".
  • the legs are at least as long as a measured at the bottom of the bag parallel to the longitudinal plane distance between the filter pocket walls forming the filter pocket.
  • the term "measured along the pocket bottom” here means that the distance of the filter box walls along a straight line is measured, which is parallel to the longitudinal plane and either along the pocket bottom or forms its tangent in the case of a curved pocket bottom.
  • the bottom of the bag need not necessarily be arranged at the level of the downstream ends of the filter box walls, but can also be further upstream. In the latter case, the depth of the filter pocket - the measured perpendicular to the longitudinal plane distance from the upstream end of a filter bag to the filter pocket bottom is shorter than the depth of a filter box.
  • Pocket bottom portion in each case at least 10%, more preferably at least 20%, more preferably at least 45%, particularly preferably at least 85%, longer than the above-mentioned distance between two filter box walls when
  • the legs By “length of the legs” is meant in each case the length of a single leg. For example, if the legs are 25% longer than the distance and the last one has the length d, then each of the two legs will have a length of 125% ⁇ d.
  • leg lengths of 150% of the distance and longer advantageous.
  • the legs can also at least 2 times as long as the distance between two filter box walls when
  • Pocket bottom portion i. the length measured over the two legs and the pocket bottom is preferably at least 15 mm, preferably 50 mm to 300 mm, more preferably 70 mm to 200 mm, more preferably about 100 mm to 160 mm.
  • the legs are each about 2.5 to 3 times as long as the distance of the filter pocket walls forming the filter pocket at the bottom of the bag.
  • the distance between the filter box walls at pocket bottom would be about 23 mm and the two legs would be about 65 mm in each case.
  • Pocket base at least approximately luftun nurse ⁇ casual.
  • the filter pockets in the region of the pocket base portion are not filter-active and it accumulates at the dirty air side surface of the filter bag within the bag base section significantly less filter material.
  • the dirt-air-side surface of the filter pocket in the area of the pocket base section particularly preferably has a lower area-related roughness value S a (definition according to DIN EN ISO 25178) than the filter-active dirt-air-side surfaces of the filter pocket outside the pocket base section. Thanks to a "smooth surface", at least part of the filter material accumulated in the bag base section falls off the surface on its own. In addition, the filter material can be sucked off the smooth surface more easily using the suction nozzle and / or stripped off.
  • the dirt-air-side surface of the filter pocket in the region of the pocket base section preferably has one Area-related roughness value S a according to DIN EN ISO 25178 of less than 5 nm, particularly preferably less than 1 nm.
  • the airtightness of the filter pockets in the region of the pocket base section can be achieved, for example, by forming the filter pockets in said region, that is to say in the region of the pocket bottom and the legs, from a material which, with respect to the density and / or composition, is made from the material of Filter mats are different.
  • the filter bags in the region of at least approximately airtight
  • Pocket base portion a extending over the bottom of the bag and the legs, flat and preferably profiled shaped part, said mold part is at least approximately impermeable to air and is preferably formed of metal, plastic or compressed filter mat material.
  • the filter mats which are preferably formed of a tile, and the planar molding can thus be formed either of different materials or they can be made of the same material, but then have a different density. In the latter case, at least approximately air-impermeable properties of the molded part are obtained by the compression of the filter mat material.
  • the at least approximately air-impermeable planar molded part (hereinafter referred to merely as "molded part") can either be arranged as a connecting element between the filter mats of two adjacent filter box walls and connect them.
  • the pocket base portion has a region in which no filter mat material is present.
  • the bottom of the bag is free of filter mat material and the filter bag is thus formed in the region of the bottom of the bag by the molding.
  • the filter mats and the molded part to be joined may nonetheless overlap at least in some areas and be fastened to each other, for example by means of gluing. If the molded part is formed from compressed filter mat material, however, the filter mats and molded part can also merge into each other at least approximately seamlessly, or be formed integrally with one another.
  • the filter bag in the area of
  • Pocket base always two layers, which are formed by the respective filter mat and by the molding.
  • the filter pockets formed in each case by facing filter box walls of adjacent filter boxes are not only upstream but also open at the top and / or bottom.
  • the terms “bottom” and “top” refer to the air cleaning device in the assembled state.
  • Top and / or bottom open filter bags also have the advantage that larger accumulations of dust and textile fibers, which can not be sucked because of their size, by means of the nozzle of the
  • Filter pocket walls can be stripped up or down.
  • the stripped fiber tows that fall off due to gravity can be collected in a collecting space positioned below the filter pockets and removed therefrom in the course of a periodically performed cleaning.
  • a clogging of the suction nozzle is counteracted, which in turn significantly reduces the susceptibility to malfunction of the filter cleaning device
  • the suction nozzle With the filter bags open at the top and / or bottom, the suction nozzle can thus be moved from a filter bag in an adjacent filter bag without them, such as according to DE 3830461, must be moved backwards (ie upstream) from the filter bags.
  • the suction nozzle As far as the design of the suction nozzle, this is usually formed as a hollow body and preferably has a preferably at least approximately flat nozzle bottom and two of this preferably at least approximately perpendicular projecting nozzle side walls, each having, preferably adjacent to the nozzle bottom, a suction opening.
  • a suction opening adjacent to the nozzle bottom is particularly advantageous for cleaning the floor below the filter boxes.
  • the suction opening is slit-shaped or formed as a row of holes and on the surface of the Filter mat directed to achieve the highest possible and precise suction.
  • the suction nozzle may further comprise a stripper brush at its downstream end, by means of which filter material accumulated in the bag base section can be removed.
  • the length of the suction nozzle (including possibly present stripping brush) is preferably selected such that it corresponds at least approximately to the depth of the filter bags (measured perpendicular to the longitudinal plane).
  • the length and width of the suction nozzle is preferably adapted to the depth and width of the pocket base portion.
  • the depth of the filter bags is at least twice as long as the width of the filter bags measured perpendicular to the depth at their upstream, open end.
  • the support frame is intended to be arranged on a bottom surface with a bottom opening into a collecting space, wherein the bottom opening is preferably arranged below the filter boxes.
  • the adjoining the bottom opening portion of the plenum can here as Maneuvering space can be used for the suction nozzle to move the latter below the filter boxes from a filter bag in an adjacent filter bag can.
  • a bottom surface open beneath the filter boxes also has the advantage that larger accumulations of dust and textile fibers, which fall off the filter walls due to gravity, accumulate in the collecting space and can be removed from there in the course of a periodically performed cleaning. Thus, a clogging of the suction nozzle is counteracted, which in turn significantly reduces the susceptibility to malfunction of the filter cleaning device.
  • the air purification system preferably comprises a discharge device, which is intended to be arranged in the collecting space or at this subsequent and to discharge accumulated therein filter material.
  • the discharge device preferably comprises a screw conveyor or a suction device. The latter can also serve to suck filter material (i.e., dirt particles to be removed from the dirty air) through the bottom opening into the collecting space.
  • a trough-shaped or downwardly in the direction of collecting space conical or pyramidal tapered collecting funnel may be arranged, which optionally together with a suction - allows targeted forwarding of deposited on the filter mats filter material into the plenum.
  • the collection funnel can be approximately in a collection box, which preferably extends below the bottom surface in the direction of clean air space and the clean air side is accessible for a periodic emptying.
  • the collecting space may alternatively be formed as an open return air duct, which is preferably below the dirty air space, in particular directly below the bottom surface adjacent, provided and the supply of dirty air, such as an adjacent engine room, in the dirty air space, which is a particularly space-saving arrangement of the air purification system in an industrial operation.
  • dirty air space and return air duct only separated by the bottom surface.
  • Fig. 1 in side view a section through an inventive air purification system with several held on a support frame, two filter box walls each having filter boxes and a
  • Filter cleaning device comprising a suction nozzle for cleaning the filter
  • FIG. 2 in plan view the one shown in Fig. 1
  • FIG. 3a in an enlarged view a horizontal
  • Section through a pocket base section including an alternative embodiment of a suction nozzle located in the filter pocket with stripper brush;
  • Fig. 4a-d each have a horizontal section through a
  • Fig. 5 in side view a section through a second
  • Embodiment of the air purification system wherein under the filter boxes, a bottom opening is present, which opens into an air return duct;
  • Air purification system of Figure 5 in which the bottom opening opens into a collecting funnel.
  • FIG. 7 in side view a section through a further alternative embodiment of
  • Air purification system of Figure 5 wherein the bottom opening opens into a collecting trough with arranged therein screw conveyor;
  • FIG. 8 in side view a section through a further alternative embodiment of
  • the air cleaning system 1 shown in Fig. 1 is used for the separation of impurities from the air, in particular textile contaminants from the exhaust air industrial textile manufacturing or textile processing plants.
  • the air generally has to be continuously cleaned of dust and fiber fly (fiber fragments, textile remnants, fiber flakes, etc.), which when working on textile machines, spinning machines, weaving or
  • Knitting machines is created.
  • the air purification system 1 has a partition wall 3, which spatially separates an upstream dirty air space 5 from a downstream clean air space 7.
  • the air purification system 1 is arranged on a bottom surface 8.
  • upstream and downstream always refer to the direction of the air flow, which flows from the sides of the dirty air space 5 through filter-active sections (also referred to as filter surfaces) of the partition wall 3 into the clean air space 7.
  • the air to be cleaned is sucked for example from a machine room of a textile processing plant and flows through a not visible in Fig. 1 air supply opening from the front (or as shown in Fig. 5 from below) in the dirty air space 5, is then cleaned by the air cleaning system 1 and then passes into the clean air space 7, from which the purified air can be returned to the engine room or outside to the environment.
  • the too Cleaning air can be conveyed in the direction of flow from the dirty air space 5 in the direction of the clean air space 7 (downstream) in a known manner (such as by a not shown air conveyor, such as a fan, fan or the like.).
  • the partition wall 3 comprises a support frame 9, which defines a longitudinal plane and on which a plurality of filter blocks 11 projecting from the support frame 9 in the direction of the dirty air space 5 are held, in particular screwed.
  • Said filter boxes 11 are arranged in a row behind one another on the support frame 9 and each have two extending from the support frame 9 in the dirty air space 5 and upstream on a vertical edge 13 converging flat filter box walls 15 (see also Fig. 2).
  • the filter boxes 11 Upstream of the support frame 9, the filter boxes 11 are thus limited by the filter box walls 15. In addition, the filter boxes 11 at the top and bottom by a bottom plate or ceiling plate 18 (see FIG. 2) are hermetically sealed. In the area of the support frame 9 itself, however, the filter boxes 11 are open, i. they lead to the support frame 9 in the downstream clean air space. 7
  • a respective filter bag 19 is formed, which in contrast to the filter boxes 11 only downstream through the Filter box walls 15 is limited, or upstream side and is open at the bottom and top.
  • the air purification system 1 further comprises a horizontal rail 21, which is arranged above a horizontal plane defined by the upper end 23 of the filter boxes 11 and extends parallel to the longitudinal direction of the support frame 9.
  • the horizontal rail 21 comprises two guide rails 25 arranged parallel to one another, along which a carriage 27 is guided to be movable back and forth in the horizontal direction (see FIG. 2).
  • a vertical rail 29 is also attached, which is arranged upstream of the partition wall 3 and the filter boxes 11. If the carriage 27 is moved along the horizontal rail 21, the vertical rail 29 attached to the carriage 27 also moves therewith.
  • a suction nozzle 31 is guided on the vertical rail 29, which is connected via an exhaust hose 32 to a vacuum source, not shown, for cleaning the filter mats 16 a filter pocket 19 in the respective filter pocket 19 in the vertical direction is moved up and down.
  • the suction nozzle 31 can in this respect either vertical strokes along the vertical rail 29 or be moved together with the vertical rail 29 by moving the carriage 27 along the horizontal rail 21 in the horizontal direction.
  • the support frame 9 is positioned with the attached filter boxes 11 on the bottom surface 8 and said support frame 9 has a bottom bar 35, which connects to the underside of the filter boxes 11 and on the other hand to the bottom surface 8.
  • the filter boxes 11 and their Filter box walls 15 are held in the embodiment shown exclusively by the support frame 9 and not in contact with the bottom surface 8. That is, except the support frame 9 bottom side no additional support elements for the filter boxes 11 are present (as well as in Fig. 3 seen).
  • the bottom 36 of the filter boxes 11 is thus spaced in the vertical direction of the bottom surface 8, said ground clearance corresponds approximately to the height of the bottom bar 35.
  • the suction nozzle 31 is located in Fig. 1 in a lower end position in which they can move below the filter boxes 11, and in the free lower space 41 between the bottom surface 8 and the bottom 36 of the filter boxes 11. How the movement of the suction nozzle 31 can be concretely controlled is described in detail in the international patent application WO 2016/091270, pages 14-17 filed in the name of the Applicant, and the disclosure in this regard is explicitly included in the present application.
  • Filter pocket change is moved in the free lower space 41, at the same time, the bottom surface 8 can be cleaned under the filter boxes 11. This prevents dust and fiber material deposited on the filter mats 16 from accumulating on the bottom surface 8, which may lead to blockages and / or blockages of the suction nozzle 31. In addition, a separate cleaning of the bottom surface 8 is unnecessary, for example, with an additional sucker, which allows a significant time savings in the air purification process.
  • the filter boxes 11, seen in plan view have an outer side tapered, in particular triangular or trapezoidal, on the upstream side.
  • the filter pockets 19 are each formed by mutually facing filter box walls 15 of adjacent filter boxes 11, the filter pockets 19 also have a V-shaped or a downstream tapered, in particular triangular or trapezoidal, horizontal cross section.
  • the outer shape or the horizontal cross-sectional area of the filter boxes 11 is preferably constant over the entire height of the filter boxes 11.
  • triangular filter boxes 11 and filter pockets 19 but also rectangular cross-sectional shapes would be conceivable, such as shown in Fig. 4b.
  • the filter boxes 11 are preferably attached to the supporting frame 9 so as to be interchangeable and have a stable filter box frame on which the associated filter mats 16 are held.
  • the filter boxes 1 and / or the filter mats 16 can be removed individually and replaced if necessary.
  • so arranged closer to the center of the support frame 9 and therefore often more stressed filter boxes 11 can be replaced earlier if necessary than the usually less stressed edge filter boxes 11th
  • FIG. 3a and 3b the designated X section of Fig. 2 is shown enlarged and shows a horizontal cross-section of a downstream end 40 of a filter bag 19 with therein arranged suction nozzle 31 in isolation.
  • the suction nozzle 31 has according to the shape of the filter pockets 19 in the direction of a downstream end 42 has a tapered, triangular or trapezoidal cross section.
  • suction slots 43 are formed, through which filter material accumulated on the filter mats 16 can be sucked.
  • Each filter bag 19 has a downstream at least approximately airtight
  • Pocket base portion 45 which is bounded by a pocket bottom 46 and two from the bottom of the bag 46 each along a respective filter box wall 15 in the direction of dirty air space 5 protruding legs 50 and extends over the entire height of the respective filter bag 19. Due to the at least approximately air-impermeable properties of the pocket base portion 45, this is not filter-active for the region of the filter pocket 19 which is less accessible to the suction nozzle 31, as a result of which the amount of filter material deposited there can be greatly reduced. Furthermore, dirt particles on the dirt air side wall portions in the bag base portion 45 (compared to the filter mats 16) adhere significantly poorer, so they can be removed from the suction nozzle 31 by simply stripping and so far in the pocket base portion 45 none
  • the suction slots 43 of the suction nozzle 31 do not extend all the way to the downstream end 42 of the respective suction nozzle 31, but only to the height of the bag base portion 45.
  • the suction nozzle 31 shown in FIG at its downstream end 42 a stripper brush 48 to clean the dirty air side surface 49 in the bag base portion 45.
  • Such a stripping brush 48 is particularly narrow Filter pockets 19 (that is, approximately at an opening angle of less than 45 °) advantageous.
  • the at least approximately air-impermeable pocket base portion 45 may be designed differently with respect to its cross-sectional shape. However, according to the invention, it always has the following three properties or characteristics:
  • the material from which the pocket base portion 45 is formed is at least approximately impermeable to air and thus at least approximately not filter active.
  • the dirt-air-side surface 49 in the bag base portion 45 should be as "smooth" as possible, so that fibers and dust as bad as possible adhere to the surface 49.
  • the legs 50 are at least as long as a measured at the bottom of the bag 46 parallel to the longitudinal plane distance d between the filter pocket 19 forming filter box walls 15 (see Fig. 4b). This condition at least approximately defines that the legs 50 have at least a certain minimum length.
  • the pocket base 46 does not necessarily have to be arranged at the level of the downstream ends 40 of the filter box walls 15, but may also be offset further upstream.
  • the at least approximately air-impermeable pocket base portion 45 comprises a planar molding 51, which is at least approximately impermeable to air and may be made of metal or plastic.
  • the molded part 51 and the filter mats 16 in this case have different compositions Materia.
  • the filter pocket 19 may be formed of the same material as the filter mats 16, but differ with respect to the density of the material.
  • Pocket bottom portion 45 are obtained at least approximately airtight properties.
  • the molded part 51 can be positioned, for example, in the region of the legs 50 on the filter mats 16 of the associated filter box walls (see FIGS. 3a, 3b and 4a) and, for example, by gluing, welding (in particular pressure welding methods, such as resistance, ultrasound, friction or cold pressure welding). or a textile joining method (eg sewing or stitch-forming method) to be attached thereto.
  • the molded part 51 can also be fastened by screwing to the outer frame of the filter box walls 15.
  • the screws and / or nuts used for this purpose are preferably recessed in the molded part 51, so that no dirty air side in the bag base portion 45 projecting parts are present, which accumulate dirt particles and can hinder the cleaning of the dirty air side surfaces.
  • FIG. 1 Unlike the variant shown in FIG.
  • FIG. 4b an embodiment is shown in FIG. 4b, where a filter mat 16 extends from one filter box wall 15 over the entire bag base section 45 to the other filter box wall 15 and in the region of the bag base section 45 with the at least approximately airtight, flat shaped part 51 is covered.
  • the molded part 51 is formed as a metal sheet, which covers the filter mat in the base portion 45.
  • Fig. 4d also shows an embodiment in which the filter pocket 19 is formed both inside and outside the pocket base portion 45 by one or more filter mat (s) 16, but the filter mat (s) 16 in the pocket base portion 45 are compressed and compacted / compressed in that it is at least approximately impermeable to air in this area.
  • the filter pockets 19 may either have an at least approximately V-shaped cross section, in which the filter box walls enclose at an angle (FIGS. 3a, 3b, 4a, 4c, 4d) or may comprise a U-shaped cross section (FIG. 4b).
  • the bottom surface 8 on which the support frame 9 is supported may be closed (as shown in FIG. 1). In this case, dirty air from the front, ie at right angles to the horizontal support frame plane to the filter boxes 11th - 2 ⁇
  • the support frame 9 may be arranged on a bottom surface 8 with a bottom opening 53 opening into a collection space 55, wherein the bottom opening 53 is arranged below the filter boxes 11.
  • the adjoining the bottom opening 53 area of the plenum 55 can be used here as a maneuvering space for the suction nozzle 31 to move the latter below the filter boxes 11 of a filter bag 19 in an adjacent filter bag 19 'can.
  • larger accumulations of dust and textile fibers can be manually or automatically removed from the collecting space 55 in the course of a periodically performed cleaning.
  • the suction nozzle 31 is counteracted, which in turn significantly reduces the susceptibility to malfunction of the filter cleaning ⁇ device.
  • dirty air flows in above the bottom surface 8 into the dirty air space 5
  • - as further explained below - in the embodiment according to FIG. 5 is introduced from below through openings in the bottom surface 8 into the dirty air space 5 becomes .
  • the collecting chamber 55 is formed as an open return air channel 57, which extends directly below the bottom surface 8 then in the direction of the dirty air space 5.
  • the return air duct 57 serves to supply the dirty air, for example from an adjacent machine room, not shown, in the
  • the bottom surface 8 preferably has at least one further opening in addition to the bottom opening on or is at least partially formed as a bottom grid to allow together with the bottom opening 53, a supply of dirty air from the return air passage 57 into the dirty air space 5.
  • cone or pyramid (blunt) shaped tapering collecting hopper 59 may be arranged, which together with a suction 61 a targeted, in particular pneumatic removal of deposited on the filter mats 16 filter material allows.
  • the bottom opening 53 opens into a trough-shaped collecting funnel 63, in which a screw conveyor 65 is arranged.
  • a screw conveyor 65 By means of the screw conveyor 65 accumulated filter material 63 can be discharged from the collecting hopper 63 in the collecting funnel.
  • the filter material is conveyed by means of the screw conveyor on one side of the collecting funnel 63 and discharged pneumatically therefrom.
  • the collecting space is designed as a collecting box 67, or the collecting funnel 59 opens into a collecting box 67, which extends downstream into the clean air space 7 and has a closable flap 69.
  • the flap 69 is closed, so that the clean air chamber side access to the collection box 67 during operation of the air purification system is possible.
  • An intermittent or continuous airflow may assist the entry of filter material into the collection box 67.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne une installation de purification d'air (1) qui comporte une paroi de séparation (3) assurant la séparation spatiale d'une chambre à air vicié (5) située en amont d'une chambre à air purifié (7) située en aval. La paroi de séparation (3) comporte une armature de support (9) et plusieurs boîtiers de filtrage (11) dépassant de l'armature de support (9) en direction de la chambre à air vicié (5). Et les boîtiers de filtrage (11) comportent au moins une paroi (15) de boîtier de filtrage qui s'étend de l'armature de support (9) vers l'intérieur de la chambre à air vicié (5). Les boîtiers de filtrage (11) sont ouverts respectivement dans la chambre à air purifié (7) située en aval. Des parois (15) de boîtiers de filtrage (11) voisins, tournées les unes vers les autres, forment respectivement un compartiment de filtrage (19) situé côté amont et de manière préférée ouvert en haut et/ou en bas, et une buse d'aspiration (31) peut être déplacée depuis un compartiment de filtrage (19) dans un compartiment de filtrage voisin (19'). Chaque compartiment de filtrage comporte, côté aval, un segment de base (45) de compartiment, lequel laisse au moins approximativement passer l'air et comporte une surface lisse côté air vicié.
EP17754157.0A 2017-08-17 2017-08-17 Installation de purification d'air pourvue d'un dispositif de nettoyage de filtre intégré Withdrawn EP3668631A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/070826 WO2019034253A1 (fr) 2017-08-17 2017-08-17 Installation de purification d'air pourvue d'un dispositif de nettoyage de filtre intégré

Publications (1)

Publication Number Publication Date
EP3668631A1 true EP3668631A1 (fr) 2020-06-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17754157.0A Withdrawn EP3668631A1 (fr) 2017-08-17 2017-08-17 Installation de purification d'air pourvue d'un dispositif de nettoyage de filtre intégré

Country Status (4)

Country Link
US (1) US20200215473A1 (fr)
EP (1) EP3668631A1 (fr)
CN (1) CN111201074A (fr)
WO (1) WO2019034253A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11207629B2 (en) * 2018-04-11 2021-12-28 Parker-Hannifin Corporation Easily shipped and installed filter and filter house
CN114232149A (zh) * 2021-11-09 2022-03-25 含山县光乾纺织有限公司 棉纤维加工用纺纱并条机

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3525656A1 (de) 1984-08-08 1986-02-13 Scharmann GmbH & Co, 4050 Mönchengladbach Bearbeitungszentrum fuer werkstuecke
DE3527656A1 (de) * 1985-08-01 1987-02-12 Zinser Textilmaschinen Gmbh Filterkasten zum ausfiltern von fasern, flug- und anderen verunreinigungen aus von einer textilmaschine, insbesondere spinnereimaschine, abgesaugter luft
BR8800169A (pt) * 1987-09-13 1989-03-21 Ltg Lufttechnische Gmbh Dispositivo de filtro e processo para seu acionamento
DE3830991A1 (de) * 1987-09-13 1989-03-23 Ltg Lufttechnische Gmbh Filtervorrichtung und verfahren zu ihrem betreiben
DE3830461A1 (de) 1988-09-08 1990-03-15 Thomson Brandt Gmbh Lautsprecher fuer ein digitales steuersignal
JP3591847B2 (ja) * 1992-03-26 2004-11-24 日本電気エンジニアリング株式会社 空気濾過装置
US5507851A (en) * 1994-07-15 1996-04-16 Kennington; H. L. Filter cleaning apparatus
CN101219313A (zh) * 2007-09-12 2008-07-16 胡继业 一种模数化组合式滤尘器
CN201088894Y (zh) * 2007-09-12 2008-07-23 胡继业 一种模数化组合式滤尘器
CN202527015U (zh) * 2012-03-06 2012-11-14 无锡市天兴净化空调设备有限公司 卷烟厂用自清式过滤器
CN204246990U (zh) * 2014-10-13 2015-04-08 吴子才 一种新型纺织回风精过滤器
WO2016091270A1 (fr) * 2014-12-11 2016-06-16 Luwa Air Engineering Ag Installation de purification d'air
CN204767900U (zh) * 2015-04-16 2015-11-18 洛瓦空气工程(上海)有限公司 空气净化设备

Also Published As

Publication number Publication date
CN111201074A (zh) 2020-05-26
WO2019034253A1 (fr) 2019-02-21
US20200215473A1 (en) 2020-07-09

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