KR102472264B1 - The dust collector for the liquid coating - Google Patents

Abstract

The present invention relates to a dust collector for liquid coating which improves filtering efficiency by suppressing clogging of a bag filter or an activated carbon member, which is a means for dust collection and adsorption filtration, and extends the service life. The dust collector for liquid coating is configured by sequentially arranging a pretreatment unit, an adsorption unit, and a dust collection unit. The pretreatment unit is composed of a main body provided with a first suction blower, a cover, a guide member, and a recycling unit. The adsorption unit is composed of an activated carbon member, a guide vane, a second suction blower, an auxiliary space unit, and a bypass pipe. The dust collecting unit is composed of a main body provided with a hopper and a collecting unit, a cartridge-type bag filter, an elevating type dust removal member, and a third suction blower.

Description

The dust collector for the liquid coating }

The present invention reduces the viscosity of fly products (paint dust including air) generated during painting work and quickly pulverizes them to suppress the clogging of the bag filter or activated carbon member, which is a means of dust collection and adsorption filtration, to improve filtering efficiency In addition, it relates to a dust collector for liquid coating that extends its lifespan and efficiently filters even fine scattering materials that may occur during a series of dust collection processes or bag filter exhaustion processes to further improve dust collection performance.

As is well known, various products made of steel are subjected to painting to prevent corrosion and to impart a sense of color. Bake and dry to complete the painting work. During the painting process, paint dust, including air, is inevitably scattered within the painting booth of the object to be coated, and contains volatile organic compounds (paint paint, thinner, benzene, toloene, etc.) that are harmful to the human body and cause environmental pollution. Therefore, it must be released into the atmosphere after purification using a dust collector.

Conventional dust collectors for collecting and filtering paint dust have been published in Korean Utility Model Registration No. 20-0320056, Patent Registration No. 10-1347720, Patent Registration No. 10-2275470, etc. The enteric dust collectors use a spray gun to spray the coating material onto the surface of the object located in the painting booth, and the paint dust scattered at the same time flows into the dust collector from the operation of the suction blower fan provided in the dust collector, and then the cartridge-type bag filter. It is primarily filtered and collected while passing through the activated carbon member in the form of a continuous carbon filter, adsorbs even minute harmful substances while being filtered, and is discharged to the outside through the outlet. Paint dust adhering to the surface of the bag filter It is removed and cleaned periodically through the unit.

However, in the dust collectors of the above structure, the bag filter is made of various types of fibers, and the gap between the fibers is densely formed to be suitable for filtering fine dust, and the activated carbon member is also suitable for adsorbing fine paint dust. To be suitable, the particles are formed very densely, and paint dust is a highly viscous substance made by mixing liquid paint paint, moisture contained in the air, and other volatile organic compounds (thinner, benzene, toloene), etc. Liquid paint dust adheres to the pores of the bag filter and activated carbon member and hardens, accelerating the clogging of the filter assembly (bag filter and activated carbon member), resulting in a rapid decrease in filtering efficiency, as well as a shortened service life and frequent replacement. This is due to the problem of increasing management and maintenance costs.

In addition, in the process of dedusting the paint dust attached to the outer surface of the bag filter using high-pressure compressed air, some of the paint dust that has been detached and scattered through the gap generated between the air wash unit and the bag filter is not collected and is not collected outside the dust collector. There is a problem in that the filtering efficiency is lowered by being released into the air, and in addition, when a strong impact airflow is applied to the bag filter clogged by high-viscosity paint dust, a structural limit point that can damage the bag filter due to excessive spray pressure is exposed. .

Republic of Korea registered utility model 20-0320056 (registered on July 3, 2003) Korean Registered Patent No. 10-1347720 (registered on December 27, 2013) Korean Registered Patent No. 10-2275470 (registered on July 5, 2021)

Therefore, the present invention was developed to efficiently improve the conventional problems as described above, and the pretreatment unit, the adsorption unit, and the dust collection unit are organically linked to form a dust collector, but the viscosity contained in the paint dust from the pretreatment unit is lowered At the same time, by removing moisture to induce the liquid paint dust to be powdered, it suppresses the fastening and clogging of the paint dust on the outer surface of the filter assembly (bag filter, activated carbon member) in the successive processing steps of the adsorption unit and the dust collection unit. Its purpose is to improve the filtering efficiency of the bag filter and the activated carbon member, as well as to reduce management and maintenance costs due to the extension of service life.

In addition, the present invention repeatedly recirculates the paint dust inside the pretreatment unit to promote the removal of paint dust moisture and powderization, and desorbs during the operation of the dust removal member to clean the paint dust attached to the bag filter inside the dust collection unit. In addition to preventing the accumulated paint dust from accumulating in other locations outside the collection space or leaking out, the filtering efficiency of the overall dust collector is further improved by inducing the paint dust introduced into the adsorption unit to come into close contact with the surface of the activated carbon member. It has a different purpose.

The present invention for achieving the above object, a pretreatment unit for improving the characteristics of paint dust, an adsorption unit for adsorbing and filtering paint dust, and a dust collection unit for collecting and filtering paint dust are sequentially arranged to configure a dust collector, The pretreatment unit includes a main body having a paint dust suction port formed on one side, a first suction blower provided on the other side, and a collecting part recessed into the bottom surface; a cover including an air vent and opening and closing the top opening of the main body; a guide member for partitioning the usable space of the main body in a zigzag form in organic connection with the main body and the cover; a recycling unit provided on the lower side of the main body for recirculating paint dust in the usable space; and the adsorption unit includes a plate-shaped activated carbon member spaced apart from the top and bottom of the inner space of the main body; a guide vane located in the space between the activated carbon members in the main body to control the speed and direction of the flow of paint dust; A second suction blower installed on one side of the main body to suck and discharge paint dust; an auxiliary space formed between an outer side of the activated carbon member and an upper end of the inner circumferential surface of the main body; A bypass pipe connected to the second suction blower and the auxiliary space to induce the suction force to be generated from the outside of the activated carbon member; the dust collection unit has a suction pipe and a discharge pipe formed in both directions, and a hopper and collection unit downward. a main body provided with a part; A cartridge-type bag filter mounted on the blocking plate inside the main body and combined with an upper cap, a lower cap, and a filter cloth; an elevating-type dust extraction member disposed on top of the blocking plate inside the main body to remove paint dust adhering to the bag filter; a third suction blower for suctioning and discharging paint dust introduced into the main body; It is characterized by technical configuration that consists of.

In addition, the guide member of the pretreatment unit is combined with the collision partition wall and the induction partition wall, and is divided into a plurality of parts on the main body and the cover. And, a collision barrier equipped with a concave-convex collision diffusion part is located at the front end of the cover close to the inlet of the main body, and a bending guide is formed at one end of the collision barrier and the induction barrier to control the flow direction and speed of the paint dust passing through the passage. In addition, the collision barrier and the induction barrier are attached and detached using fastening protrusions formed on the main body and cover, and either a surface heating heater or an absorption cloth is attached to the inside or one side, or a surface heating heater and an absorption cloth are attached to the inside or on one side. It provides another feature so that it is formed in combination in a tubular form.

In addition, the present invention combines the guide vanes of the adsorption unit in a diamond shape and a triangular shape and arranges a plurality of them in a flow path formed in the space between the activated carbon members, the diamond-shaped guide vanes are fixed in position at the beginning and end of the flow path, and the triangular guide vanes In addition to being fixed in a zigzag form between the lozenge-shaped guide vanes, the dust collection unit's escapement member includes an air supply pipe with a tapered injection nozzle, an elevating cylinder, a guide holder, a guide bracket including a long hole, and a guide bracket for generating compressed air. It is composed of a combination of an air supply source and a flexible transfer pipe, and a protruding inclined tension-pressing part is formed on the inner circumferential surface, and another feature is that the packing to be fitted and contacted to the outside of the spray nozzle is attached to the upper end of the bag filter upper cap. .

According to the present invention, by removing the moisture contained in the liquid paint dust scattering products and at the same time significantly lowering the viscosity concentration and powdering it, the paint dust is not adhered to the bag filter or activated carbon member of the dust collection unit and the adsorption unit, so that the filter assembly (bag filter, active carbon absence) clogging is effectively suppressed, so the filtering performance is improved, and in addition, the service life is extended, so the effect of reducing management and maintenance costs can be expected.

In addition, paint dust with moisture and viscosity is repeatedly recycled in the pretreatment unit to improve powderization promotion efficiency, and is desorbed and scattered during the dedusting process of compressed air spray method to periodically clean paint dust attached to the filter assembly. It is possible to further improve the filtration efficiency and reliability of the dust collector by preventing paint dust accumulated outside the collection space or released outside without being collected, and the contact efficiency between the activated carbon member of the adsorption unit and the paint dust is improved. This is to obtain the effect of adsorbing and removing even minute volatile organic compound particles.

1 is a system diagram of a dust collector according to a preferred embodiment of the present invention, and FIG. 2 is a cross-sectional view illustrating the configuration of a pretreatment unit according to the present invention.
Figure 3 is an enlarged cross-sectional view of the recycle unit of the pretreatment unit according to an embodiment of the present invention, Figure 4 is a front illustrative view showing a partial cross-section of the main part of the adsorption unit of the present invention, Figure 5 is the overall dust collection unit according to the present invention It is an exemplary view for explaining the configuration, and FIG. 6 (a) (b) is a cross-sectional example for explaining the operating state of the dust collection unit dust removal member.

The terms or words used in this specification and claims should not be construed as being limited to the usual or dictionary meaning, and the inventor can properly define the concept of the term in order to explain his invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principles, and the embodiments described in this specification and the configuration shown in the drawings are only the most preferred embodiment of the present invention, so the technical idea of the present invention It should not be viewed as representing all, and it should be understood that there may be various equivalents and variations.

Hereinafter, a preferred embodiment of a dust collector for liquid coating according to the present invention will be described in detail with reference to the accompanying drawings, but FIG. Figure 3 is an enlarged cross-sectional view of the pretreatment unit recycle unit according to an embodiment of the present invention, Figure 4 is a front example showing a partial cross-section of the main part of the absorption unit of the present invention 5 is an exemplary view for explaining the overall configuration of the dust collecting unit according to the present invention, respectively.

The dust collector of the present invention is composed of a pretreatment unit (A) for improving the characteristics of paint dust, an adsorption unit (B) for adsorbing and filtering paint dust, and a dust collection unit (C) for collecting and filtering paint dust. .

The pretreatment unit (A) of the illustrated embodiment is a device for inducing powderization by removing moisture contained in paint dust, which is a volatile organic compound (paint paint, thinner, benzene, toloene, etc.) and at the same time lowering the viscosity, and is a dust collection unit And it is to play a role for significantly suppressing the acceleration of clogging of the filter assemblies (bag filter, activated carbon member) provided in these units in the successive processing steps of the adsorption unit.

That is, the paint dust inlet 101 is formed on one side, the first suction blower 102 is provided on the other side, and the collecting part 105 is formed on the bottom surface to form a housing-type main body 100, and evaporated water vapor It includes an air vent 111 for discharging to the outside, and a cover 110 for opening and closing the top opening of the main body 100, organically linked with the main body 100 and the cover 110. It consists of a guide member 120 for partitioning the usable space in a zigzag shape and a recycling unit 130 provided on the lower side of the main body to recirculate paint dust in the usable space.

The guide member 120 of the above example is divided into a main body 100 and a cover 110 by combining a plate-shaped collision barrier 121 and a plurality of induction barriers 122, but the collision barrier 121 is the main body suction port. In addition to being fixed to the front end of the cover 110 close to 101, a triangular toothed or concave-convex collision diffusion portion 121a is formed on the surface. Here, the collision diffusion unit 121a is configured to generate a strong impact force on the paint dust introduced from the main body inlet 101, and instantaneously atomizes the paint dust particles to remove moisture and volatile organic matter mixed in the paint dust. It not only induces separation between compounds (paint paint, thinner, benzene, toloene, etc.), but also promotes evaporation of moisture in paint dust according to the occurrence of collision diffusion force and plays a role in quickly lowering the viscosity of volatile organic compounds. In addition, the induction partition wall 122 is in the form of a plate, and is alternately spaced apart from the lower side of the main body 100 and one side of the cover 110, and along with the collision partition wall 121, the passage 103 in the available space of the main body extends in a zigzag shape It is a composition to induce it to be.

In addition, bending guides 121b and 122a are formed at one end of the collision partition wall 121 and the induction partition wall 122 to control the flow direction and speed of paint dust passing through the passage 103, Fastening protrusions 104 are formed on the 100 and the cover 110 so that these partitions (impact partitions, induction partitions) are detachably fitted, and a planar heating heater 122b or absorbent cloth is placed inside or on one side of the induction partition wall 122 Any one of (122c) is attached or formed by combining the surface heating heater and the adsorption cloth in a dual form. Here, the above-described planar heating heater 122b rapidly evaporates liquid substances or moisture contained in paint dust passing through the passage 103 in a zigzag form along the induction partition wall 122 to obtain dry powder of mixed volatile organic compound particles It is a means for significantly lowering the viscosity at the same time as accelerating the viscosity, and the adsorption cloth (122c) is for primarily filtering the powdered paint dust particles, and the filter assembly (active carbon member, bag filter) collects It plays a role in further improving the filtering efficiency as well as extending the service life by drastically reducing it, and it can be removed from the induction partition 122, cleaned, and then reused.

The recycling unit 130 of a preferred embodiment is a pocket filter 134 provided on the outside of the main body 100, along with paint dust accumulated in the collecting part 105 on the bottom surface of the main body 100, and As a recirculation treatment device for re-flowing into the passage 103 via the suction fan 135, the paint dust passing through the pocket filter 134 is additionally collected in addition to the above adsorption cloth 122c to the filter assembly. It can drastically reduce the filtration throughput and filtering overload for paint dust, and further accelerate the evaporation and powderization of liquid substances or moisture contained in paint dust in the repeated cycle process.

In the recycling unit 130 as described above, the anti-scattering unit 131 having an inlet hole 131a in the form of an upper and lower narrow is placed at the top of the recessed collecting unit 105 on the bottom surface of the pretreatment unit body 100, but the scattering prevention The part 131 is formed in a shape like a net, and a vibrator 132 is disposed in the space between the collecting parts 105 to efficiently shake off the adhering paint dust, and the intake port connected to the collecting parts A manifold (133) in the form of a manifold (133a) is installed and fixed on the lower side of the bottom of the main body, and a pocket filter (134) and a suction fan (135) are successively disposed on the outlet side of the manifold (133), and the suction fan (135) A bypass transfer pipe 136 leading from the outlet to the inside of the main body 100 is formed. Here, the pocket filter 134 is detachable and can be used after collecting the collected paint dust, and can be used by mixing and stacking plate-shaped nonwoven fabric filters, HEPA filters, activated carbon filters, etc. in an assembly form.

The adsorption unit (B) of the illustrated embodiment is for adsorbing and removing harmful gases and odors given to volatile organic compounds (paint paint, thinner, benzene, toloene, etc.) of powdered paint dust that has passed through the pretreatment unit (A) It is a device, and is located in the space between the plate-shaped activated carbon members 201 and 201' spaced apart from the top and bottom of the inner space of the main body 200 and the activated carbon member in the main body, and is a guide for controlling the flow rate and direction of paint dust. The vane 210, the second suction blower 202 installed on one side of the main body 200 to suck and discharge paint dust, and formed between the outer side of the activated carbon members 201 and 201' and the upper end of the inner circumferential surface of the main body 200 It is connected to the auxiliary space part 203 (203'), the second suction blower 202, and the auxiliary space part 203 (203') to induce suction force to be generated from the outside of the activated carbon member 201 (201'). It is composed of a combination of bypass pipes 204 and 204' for

In the above example, the activated carbon members 201 and 201' are spaced apart from the upper and lower sides of the passage 205 in the internal space of the main body, and the guide vanes 210 are formed in the space between the activated carbon members in a combination of a diamond shape and a triangular shape. Multiple arrangements are made within the passage 205, but the rhombic guide vanes 211 and 211' are positioned at the beginning and end of the passage, and the triangular guide vanes 212 are zigzag between the diamond guide vanes. position is fixed. Here, the above-described diamond-shaped guide vanes 211 and 211' rapidly spray the flow rate distribution of paint dust introduced into and discharged into the main body 200 in the direction of the activated carbon member 201 and 201', It is intended to induce the adsorption efficiency to be improved according to the increase in the contact area, and the triangular guide vane 212 is linked to the rhombic guide vanes 211 and 211' in both directions so that the passage in the flow path 205 forms a zigzag pattern. In addition to being alternately arranged to maintain, it plays a role in increasing the contact time of the paint dust on the entire surface of the activated carbon member 201, 201', and the above-described rhombic or triangular guide vanes 211, 211', 212 ) is coupled to the rotating device so that the direction of paint dust discharge can be appropriately changed and controlled.

The dust collecting unit (C) of the illustrated embodiment is a device for substantially filtering and collecting paint dust in the form of powder particles from which harmful gases and odors are filtered while successively passing through the pretreatment unit (A) and the adsorption unit (B). A suction pipe 301 and a discharge pipe 302 are formed in the direction, and a separate fixing means is used for the main body 300 equipped with the hopper 303 and the collector 304 and the blocking plate 305 inside the main body. Cartridge-type bag filter 306, which is mounted and is combined with an upper cap 306a, a lower cap 306b, and a filter cloth 306c, and is disposed on top of the blocking plate 305 inside the main body to differ from the bag filter 306 It consists of an elevating type dust removal member 310 for removing the attached paint dust, and a third suction blower 307 for suctioning and discharging the paint dust introduced into the main body 300.

The escapement member 310 of the above example includes a manifold type air supply pipe 311 having a tapered spray nozzle 311a, a lift cylinder 312, a guide holder 313, and a guide bracket 314 including a long hole 314a. ) and an air supply source 315 for generating compressed air and a flexible transfer pipe 316, the lift cylinder 312 is a hydraulic or pneumatic motor actuator in the form of a blocking plate 305 and a main body ( 300), in addition to being fixed to the bottom surface of the main body 300 at the central position of the space between them, one side of the operating rod is hinged to the air supply pipe 311, and the guide bracket 314 is located in the space between the blocking plate 305 and the main body 300 A ring-shaped guide holder 313 installed on one side of the guide bracket and inserted into one end of the air supply pipe 311 through the long hole 314a of the guide bracket is inserted to slide in the up and down direction, and high-pressure compression is applied to the air supply pipe 311. The air supply source 315 and the flexible transfer pipe 316 for sending air are attached to the outer side of the main body 300 using a fixing means such as a fixing bracket. In addition, a protruding inclined tension-pressing portion 320a is formed on the inner circumferential surface, and a packing 320 is provided to be fitted to the outside of the injection nozzle 311a, but the packing 320 is the top of the bag filter upper cap 306a It is fixed in position to the stepped part (reference numerals are omitted).

In the drawings, reference numeral 140, which has not been described, relates to a mesh heating wire located at the tip of the first suction blower 102 of the pretreatment unit, and reference numeral D relates to an exhaust duct for transporting paint dust continuously connected to each unit. will be.

The following description is to examine in detail the process of each unit processing step of the liquid coating dust collector having the above characteristic elements.

First, let's look at the pretreatment unit, but as the first suction blower 102 is operated, as shown in FIG. The cover 110 primarily collides with the collision barrier 121 located at the front end, and at this time, the paint dust strongly collides with the collision diffusion part 121a formed on the surface of the collision barrier and spreads, and the particles of the paint dust instantaneously It induces separation between paint paint (liquid substance with viscosity) and diluent (thinner, benzene, toloene, etc.) that are atomized and mixed in paint dust, and promotes evaporation and powderization of these liquid substances (paint paint, diluent). It will lay the foundation for Subsequently, the paint dust changed in the form of impact air flow will pass through the zigzag passage 103 along the induction partition wall 122 after escaping to the lower side of the impact partition wall 121, and the bending guide provided on the lower side of the impact partition wall 121. After the paint dust quickly escapes through the part 121b, the flow rate slows down in the expansion space between the induction partition walls 122, so the evaporation and powderization promotion properties are improved, and the paint dust moving upward along the induction partition wall 122 in succession. While passing quickly along the induction partition bending guide part 122a on the front side again, it collides with the collision diffusion part 121a of the collision partition again, so that the paint dust particles are separated and atomized once more, and then disposed on the rear side. While finally passing through the passage 103 along the induction barrier ribs 122, the viscosity of the liquid paint contained in the paint dust can be effectively lowered, as well as the rapid evaporation of the diluent can be induced to promote powderization.

In addition, since the planar heating heater 122b is attached to the induction partition wall 122, the evaporation and powderization of the liquid paint dust will be performed more quickly, and in particular, the adsorption cloth attached to the induction partition wall 122 located on the rear side ( 122c) by primarily filtering the particles of powdered paint dust, greatly reducing the collection amount of the filter assembly (active carbon member, bag filter) inside the adsorption unit (B) and dust collection unit (C), extending the service life Of course, the filtering efficiency can be improved.

In addition, through the repeated recycling process of the recycling unit 130 provided at the lower part of the main body 100 of the pretreatment unit (A), it is possible to further accelerate the powderization of the paint dust, as well as the paint dust powder generated inside the main body 100. By pre-collecting additional particles, the filtration throughput and filtering overload of the filter assembly can be reduced. That is, when the suction fan 135 is operated as shown in FIGS. 2 and 3, through the intake port 133a of the manifold 133, the paint dust powder particles piled up on the collecting part 105 on the bottom surface of the main body and the passage 103 of the main body ), some of the paint dust passing through is sucked in, collected and filtered through the pocket filter 134, and then introduced into one side of the passage 103 in the inner space of the main body along the bypass transfer pipe 136 at the outlet of the suction fan 135. It accelerates the powderization of paint dust more efficiently together with the collection of paint dust powder particles. Here, in the process of the paint dust passing through the pocket filter 134 in which a non-woven fabric filter, a HEPA filter, an activated carbon filter, etc. are combined in an assembly form, the contained moisture is absorbed and removed to enhance the powderization of the paint dust, and in addition to this, the collection The inlet hole 131a of the anti-scattering unit 131 installed on the upper side of the unit 105 is formed in the shape of an upper and lower narrow, so that the paint dust powder particles piled up in the collecting unit 105 in the recirculation process of the recycling unit 130 pass through the passage It is possible to efficiently prevent scattering by rising in the direction of (103), as well as easy discharge.

Through the treatment process of the pretreatment unit, the viscosity of the paint dust generated during the liquid painting process is rapidly lowered, and at the same time, powderization is promoted, so that the filter assembly (bag filter, activated carbon member), which is a filtration means of the adsorption unit and dust collection unit, is applied. By suppressing the acceleration of clogging by preventing the adhesion of paint dust to the filter assembly, it is possible to prevent deterioration in the filtering performance of the filter assembly and to extend its service life.

Next, let's take a look at the treatment process of the adsorption unit (B), but as shown in FIG. It is concentrated and dispersed toward the activated carbon members 201 and 201' spaced apart from each other on the upper and lower sides of the main body 200 and comes into close contact with the activated carbon members 201 and 201', and then the triangular guides are arranged in a zigzag pattern. It collides with the vane 212 and rotates in a state where the flow rate is slowed, inducing uniform contact over the entire area of the activated carbon members 201 and 201', and subsequently passing through the rhombic guide vane 211' disposed at the rear of the body passage. While doing so, the paint dust comes into close contact with the activated carbon members 201 and 201' and then escapes, so that harmful gases or odors contained in the paint dust are effectively removed. At this time, the diamond-shaped guide vanes 211, 211' form a pointed cross-section, so the inflow and discharge resistance of paint dust is minimized, and if necessary, these guide vanes 211, 211', 212 are used as a rotating device. Through this, it is possible to efficiently control contact with the activated carbon members 201 and 201' by rotating in a desired direction.

In addition, the bypass pipe 204, 204 is provided between the second suction blower 202 from the auxiliary space 203, 203' formed between the outer side of the activated carbon member 201, 201' and the upper end of the inner circumferential surface of the main body 200. ') is formed to be in communication, so that the suction force generated by the operation of the second suction blower 202 through this connection path is also generated outside the activated carbon member 201 (201') (auxiliary space part), so that the main body 200 The action of pulling the paint dust exiting the passage toward the activated carbon member further increases the contactability of the paint dust with the activated carbon member 201 (201'), thereby improving the efficiency of removing harmful gases and odors.

The following description relates to a dust collection unit (C) for substantially collecting and filtering powder particles of paint dust that have passed through the pretreatment unit (A) and the adsorption unit (B) step by step, as shown in FIG. 5, the third suction blower ( 307), after the paint dust is introduced from the suction pipe 301 on one side of the main body 300, the powder particles included in the paint dust are filtered and collected while passing through the cartridge-type bag filter 306, and the purified paint Dust is emitted into the atmosphere. At this time, since the paint dust is in the form of a powder that has lost viscosity, it is not only not adhered to the surface of the bag filter 306 and is easily desorbed, but also life extension due to suppression of clogging of the bag filter can be expected. In addition, by primarily filtering the powder particles of paint dust from the adsorbent cloth 122c attached to the induction partition of the pretreatment unit and the pocket filter 134 of the recycle part, the amount of collection for the bag filter 306 is greatly reduced and the filtering efficiency is improved. It is further improved, and the purification efficiency of harmful substances contained in paint dust is superior to the existing liquid coating dust collector, so quality stability can be secured.

In addition, FIG. 6 (a) (b) will explain the operation process of the dust removal member 310 for cleaning paint dust adhering to the bag filter 306 inside the dust collection unit (C). That is, as shown in FIG. 6 (a), in the state before the lift cylinder 312 operates, the spray nozzle 311a of the air supply pipe 311 is located away from the top of the bag filter 306 and when the lift cylinder 312 operates, FIG. 6 ( As shown in b), while the air supply pipe 311 descends, the injection nozzle 311a is engaged and fitted to the bag filter upper cap 306a. 314), the air supply pipe 311, which slides smoothly along the long hole 314a and descends, tilts to one side and is not eccentric and supported in an accurate horizontal state, fitting between the spray nozzle 311a and the bag filter upper cap 306a done closely. Thereafter, high-pressure compressed air according to the operation of the air supply source 315 is strongly sprayed from the spray nozzle 311a to efficiently remove the paint dust powder particles adhering to the surface of the bag filter 306. In particular, the spray nozzle 311a Since it is elastically inserted into the packing 320 installed in the upper cap 306a and there is no gap at all, the discharge pipe 302 out of the lower space of the blocking plate 305 Fundamentally blocking the inflow and accumulation of the formed blocking plate 305 into the upper space to prevent some of the unpurified paint dust from being discharged to the outside via the discharge pipe 302, further improving the filtration efficiency and reliability of the dust collector. It can.

As described above, the present invention rapidly lowers the viscosity of the fly products (paint dust including air) generated during the painting operation and pulverizes them, and also prevents adhesion to the outer surface of the filter assembly (bag filter, activated carbon member), which is a filtering means. By suppressing the acceleration of clogging by preventing clogging, it is possible to prevent deterioration in the filtering performance of the filter assembly and to provide an effect of prolonging the service life of the filter assembly. In addition, by preventing the paint dust desorbed during the paint dust dedusting process in the dust collection unit (C) from being accumulated in other locations outside the collection space or leaking to the outside, the quality stability of the dust collector is secured due to the improvement in purification performance, as well as the adsorption unit (B ) is to induce the paint dust introduced into the surface to come into close contact with the surface of the activated carbon member, thereby obtaining the effect of improving the overall filtering efficiency of the dust collector.

A: pretreatment unit, 100: main body, 102: first suction blower,
103: passage, 104: fastening stone, 105: collection unit,
110: cover, 120: guide member, 121: crash bulkhead,
121a: collision diffusion part, 121b, 122a: bending guide part, 122: induction partition,
122b: face heating heater, 122c: adsorption cloth, 130: recycling unit,
131: scattering prevention unit, 131a: inlet hole, 133: manifold,
133a: intake port, 134: pocket filter, 135: suction fan,
B: adsorption unit, 201,201': activated carbon member, 202: second suction blower,
203,203': auxiliary space, 204,204': bypass pipe, 205: flow path,
210: guide vane, C: dust collecting unit, 300: main body,
305: blocking plate, 306: bag filter, 306a: upper cap,
306b: lower cap, 306c: filter cloth, 310: dust extraction member,
311: air supply pipe, 311a: spray nozzle, 312: lift cylinder,
313: guide holder, 314: guide bracket, 314a: long hole,
320: packing, 320a: tension pressure branch, D: exhaust duct

Claims (6)

A pretreatment unit (A) for improving the characteristics of paint dust, an adsorption unit (B) for adsorbing and filtering paint dust, and a dust collecting unit (C) for collecting and filtering paint dust are sequentially arranged to form a dust collector, The unit (A) has a main body 100 having a paint dust inlet 101 formed on one side, a first suction blower 102 provided on the other side, and a collecting part 105 recessed into the bottom surface; a cover 110 including an air vent 111 and opening and closing the top opening of the main body; a guide member 120 for partitioning the usable space of the main body in a zigzag form in organic connection with the main body 100 and the cover 110; A recycling unit 130 provided on the lower side of the main body 100 to recirculate paint dust in the usable space; of the activated carbon members 201 and 201'; a guide vane 210 located in the passage 205 of the space between the activated carbon members in the main body to control the speed and direction of the flow of paint dust; A second suction blower 202 installed on one side of the main body 200 to suck and discharge paint dust; auxiliary space portions 203 and 203' formed between the outer side of the activated carbon member and the upper end of the inner circumferential surface of the main body; A bypass pipe 204, 204' connected to the second suction blower 202 and the auxiliary space 203, 203' for inducing suction force to be generated from the outside of the activated carbon member; The unit (C) has a main body 300 in which a suction pipe 301 and a discharge pipe 302 are formed in both directions and a hopper 303 and a collector 304 are provided in the lower side; A cartridge type bag filter 306 mounted on the blocking plate 305 inside the main body and combined with an upper cap 306a, a lower cap 306b and a filter cloth 306c; an elevating dust extraction member 310 disposed on top of the blocking plate inside the main body 300 to remove paint dust adhering to the bag filter 306; a third suction blower 307 for suctioning and discharging the paint dust introduced into the main body 300; A dust collector for liquid coating, characterized in that consisting of.
According to claim 1,
The guide member 120 of the preprocessing unit is combined with the collision partition wall 121 and the induction partition wall 122 and is divided into a plurality of parts in the main body 100 and the cover 110, and the collision partition wall 121 and the induction partition wall 122 ) are alternately positioned so that the paint dust passage 103 in the available space of the main body forms a zigzag shape, and the front end of the cover 110 close to the main body inlet 101 is provided with a concave-convex collision diffusion portion 121a. The partition wall 121 is positioned, and the bending guide parts 121b and 122a are formed at one end of the collision partition wall 121 and the induction partition wall 122 to control the flow direction and speed of the paint dust passing through the passage 103. A dust collector for liquid coating, characterized in that it allows.
According to claim 2,
The collision barrier 121 and the induction barrier 122 are attached and detached using the fastening protrusions 104 formed on the main body 100 and the cover 110, and selected from the planar heating heater 122b or the absorbent cloth 122c. A dust collector for liquid coating, characterized in that either one is attached to the inside or one side, or the surface heating heater (122b) and the adsorption cloth (122c) are combined in a dual form to be attached.
According to claim 1,
The anti-scattering part 131 having an inlet hole 131a in the form of an upper and lower narrow is placed at the top of the collecting part 105 on the bottom surface of the pretreatment unit body 100, and a vibrator 132 is placed in the space between the collecting parts 105 The recycle unit 130 of the pretreatment unit is combined with a manifold 133 including an intake port 133a connected to the collection unit 105, a pocket filter 134, and a suction fan 135, and the A dust collector for liquid coating, characterized in that it is configured to further include a bypass transfer pipe 136 for connecting the inside of the main body 100 from the suction fan 135 in a communication state.
According to claim 1,
A plurality of guide vanes 210 of the adsorption unit are combined in a diamond shape and a triangular shape and arranged in a plurality in the flow path formed in the space between the activated carbon members 201 and 201', and the diamond shape guide vanes 211 and 211' It is fixed in position at the beginning and end of the flow path 205, and the triangular guide vane 212 is fixed in a zigzag form between the rhombic guide vanes.
According to claim 1,
The dust collection unit 310 includes an air supply pipe 311 having a tapered spray nozzle 311a, an elevating cylinder 312, a guide holder 313, a guide bracket 314 including a long hole 314a, and compression It is composed of a combination of an air supply source 315 and a flexible transfer pipe 316 for generating air, and a protruding inclined tension pressure portion 320a is formed on the inner circumferential surface, and the packing ( 320) is attached to the upper end of the bag filter upper cap (306a).

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