JP2008119583A - Wet dust precipitator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively remove dust like wheat flour scattering in air by using a relatively small amount of water, to effectively clean a dust collecting filter 9a, and to prevent decay of dust in a casing 1. <P>SOLUTION: This wet dust precipitator is provided with nozzles 8 spraying foggy water w2 for dust collecting to the dust collecting filter 9a, and a cleaning water supply means 15 supplying previously stored cleaning water w to the dust collecting filter 9a at a relatively large flow rate by gravity, in a tank 16 for cleaning the dust collecting filter 9a. The dust collecting filter 9a is made of the same material as that of a water drop splashing preventive filter 9b and integrally combined with it to form a cylinder. A drain pipe 6 is formed to continuously drain out the water w flowing down to a water sump j1 of the casing 1 during air cleaning. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wet type dust collector that uses a dust collection filter and water to remove dust in the air and purify the air.

  Conventional wet dust collectors include those disclosed in Patent Document 1, for example. This wet dust collector has a casing whose inside is a sealed air passage, a water reservoir formed at the lowermost part in the casing, and a mist-like shape disposed at a specific height position in the casing. A nozzle for injecting water, a flat dust collecting filter disposed horizontally below the nozzle, and the nozzle for preventing dust and water droplets from scattering upward (atmosphere side) A flat water drop scattering filter disposed horizontally on the upper side, and an air supply means for causing the air to flow toward the water surface of the water reservoir in the casing and then flow upward. Has been made.

  During operation of this wet dust collector, mist-like water continuously ejected from the nozzle is supplied to almost the entire surface of the dust collecting filter, and the supplied water is applied to the porous contact material surface of the filter. It effectively captures dust in the air as it flows down, increasing the dust removal action of the filter.

JP-A-11-90163

  A powder material such as wheat flour is sometimes used in food factories and the like, and when this powder material is put into a pan or the like, a part thereof is scattered in the atmosphere. The following problems arise when the scattered flour or the like is removed by the conventional wet dust collector described above.

  The water sprayed from the nozzles prevents the clogging by washing the dust when it flows down the surface of the porous contact material of the dust collection filter, but when the flow rate is small, the filter for the dust collection is gradually clogged. Over time, the air permeability of the dust collecting filter is excessively lowered. In order to prevent this, it is necessary to increase the flow rate of water sprayed from the nozzle to such an extent that a sufficient cleaning action of the porous contact material can be obtained. However, the power consumption required for water injection from the nozzle is increased, which is uneconomical.

  Moreover, in the conventional wet dust collector described above, the residence time of the water in the water reservoir becomes longer, and the flour contained in the water may decay, which may adversely affect food hygiene and cause odor. .

  The present invention was devised in view of the above problems, that is, it can effectively remove dust such as flour scattered in the air by using a relatively small amount of water. In addition, an object is to provide a wet dust collector capable of preventing the decay of wheat flour and the like.

  In order to solve the above-mentioned problems, a first wet dust collector according to the present invention comprises a casing having a sealed air passage on the inside, as described in claim 1, for collecting dust in the casing. In a wet dust collector provided with a filter and a nozzle for injecting mist-like water into the dust collection filter, the dust collection filter is a vertically-oriented cylindrical body. is there.

  According to a second wet dust collector of the present invention, as described in claim 2, the second wet dust collector includes a casing having a sealed air passage inside, and the dust collection filter and the dust trap are disposed in the casing. In a wet dust collector provided with a filter for preventing water droplets such as water droplets located downstream of a collecting filter, and a nozzle for injecting mist-like water into the dust collecting filter, the dust collecting filter and the The water droplet scattering prevention filter is integrally formed of the same material and is formed into a vertical cylindrical body.

The first or second wet dust collector described above is preferably embodied as follows.
That is, as described in claim 3, a plurality of nozzles for injecting mist-like water to the dust collection filter are arranged in a substantially concentric annular shape with respect to the dust collection filter.
According to a fourth aspect of the present invention, the dust collection filter and the components provided in the casing on the upstream side thereof can be removed.

  Next, a third wet dust collector according to the present invention includes a casing having a sealed air passage on the inside, as described in claim 5, and has a mist-like water at a specific height position in the casing. In a wet dust collector provided with a dust collecting filter to be sprayed, cleaning water supply means for cleaning the dust collecting filter is provided, and the cleaning water supply means includes a tank for storing cleaning water, And a water channel with an opening / closing mechanism that allows the washing water in the tank to flow down to the dust collecting filter at a high flow rate by a gravitational action at any time. .

  Next, a fourth wet dust collector according to the present invention includes a casing provided with a dust collecting filter in the middle of the air passage, the inside being a sealed air passage. In the wet type dust collector having a water reservoir portion formed at the innermost lower part of the casing, a drain pipe is formed for allowing the water that has flowed down to the water reservoir section to flow outward, and the middle portion of the drain pipe is moved up and down. When the middle part of the length is displaced upward, the drainage pipe drains while maintaining the state in which water stays up to a specific height of the water reservoir, while the middle part of the length is When displaced downward, the drain pipe drains in a state where water does not stay in the water reservoir.

  The present invention is preferably embodied as follows. That is, as described in claim 7, in order to clean the dust collecting filter, the cleaning water previously stored in the tank is subjected to gravity. The cleaning water supply means is configured to flow down at a relatively large flow rate by the action to be supplied to the dust collecting filter, and the opening / closing operation of the water channel with an opening / closing mechanism of the cleaning water supply means and the length of the drain pipe It is assumed that the vertical displacement at the midpoint is linked.

  Furthermore, the above-described third or fourth wet dust collector should be embodied as follows, that is, as described in claim 8, for heating the cleaning water in the tank. It is set as the structure which provided the heater.

According to the present invention described above, the following effects can be obtained.
That is, according to the first aspect of the present invention, since the filtration area of the dust collecting filter can be arbitrarily secured by increasing the cylindrical body, the entire wet dust collector having an arbitrary size of dust collecting capacity is obtained. The dust collection filter is sometimes washed with washing water to eliminate clogging, but the dust collection filter is a vertical tube. Therefore, when the filter is washed while allowing the water stored in the tank to flow down at a relatively large flow rate, the washing water can be quickly circulated around the entire outer periphery of the filter, and the filter surface can be filtered. It is possible to effectively eliminate clogging, and since the dust collecting filter is a cylindrical body, these position holding structures can be easily disassembled and assembled, and in the disassembled state, Position maintenance Each component is from becoming as easy to wash structures.

  According to the second aspect of the present invention, the dust collection filter and the water droplet scattering prevention filter can be handled as a single unit, and the attachment and removal thereof is facilitated, and the position holding structure of these filters in the casing is simple. In addition, when assembling the dust collecting filter and the water droplet scattering preventing filter in the casing, it is not necessary to consider the vertical direction.

  According to the third aspect of the present invention, water sprayed from the nozzle toward the dust collecting filter is uniformly supplied to the filtration surface of the filter, and the dust collecting performance can be improved. Further, it is possible not to arrange the tip of the nozzle other than the tip of the nozzle in the air flow, and it is possible to prevent the nozzle from being contaminated and the increase in air flow resistance due to the nozzle being present in the air flow.

  According to the fourth aspect, the inside of the casing can be easily cleaned.

According to the fifth aspect of the present invention, since the cleaning water supply means is formed, it is not necessary to clean the dust collecting filter with the water sprayed from the nozzle, and the minimum required for collecting dust from the nozzle is eliminated. Since it is only necessary to spray at a flow rate, the amount of water sprayed from the nozzle can be kept small, and the cleaning water supply means collects dust by flowing down the cleaning water in the tank at a large flow rate at a time. Therefore, it is possible to quickly and effectively clean a wide range of the filtration surface of the dust collecting filter even with relatively low-pressure cleaning water. Therefore, the total amount of water used in both the nozzle and the cleaning water supply means is greatly reduced compared to the case where the same effect is obtained only by spraying from the nozzle. The A than that, specifically with respect to require 17 liters / min / m ² degree if by spray from only the nozzle, it become avoid at 9 liters / min / m ² approximately. Further, since a large amount of cleaning water is temporarily supplied from the cleaning water supply means to the dust collecting filter, the cleaning water effectively cleans a wide area in the casing as compared with the conventional case.
Furthermore, with a simple structure, a relatively large amount of washing water can be supplied to the dust collecting filter at a relatively large flow rate at any time, and the clogging of the filtering surface of the filter can be effectively eliminated. it can.

  According to the sixth aspect of the present invention, it is possible to easily switch between a state in which water is accumulated up to a specific height of the water reservoir and a state in which water is not accumulated in the water reservoir by vertical displacement in the middle of the length of the drain pipe. In addition, the water accumulated in the water reservoir has a water sealing function that prevents air flow through the drain pipe and prevents the air from flowing from the drain pipe into the negative pressure space in the casing. Since it is not necessary to provide a valve mechanism for changing the drainage state due to this inside the drainage pipe, the drainage performance of the drainage pipe can be maintained satisfactorily. As long as water is supplied into the casing in any state where water does not accumulate in the water reservoir, water and dust mixed in it are continuously discharged from the drain pipe, so that the dust can reach the water reservoir for a long time. In this case, the water flow rate in the water reservoir is changed by switching between the state where water is accumulated in the water reservoir and the state where water is not accumulated in the water reservoir. It can be changed greatly, and the inner surface of the water reservoir can be effectively cleaned, which also contributes to preventing the decay of dust.

  According to the seventh aspect of the present invention, the following effects can be obtained in addition to the effects described above due to the presence of the cleaning water supply means, that is, the dust collection filter is cleaned. On the other hand, either the opening / closing operation of the water channel with the opening / closing mechanism or the vertical displacement of the drain pipe in the middle of the length of the drain pipe can be performed and the operation becomes easy, and the dust collecting filter When washing the water, the water is smoothly drained through the drain pipe, so that an excessive amount of water does not accumulate in the water reservoir, and the opening and closing of the water channel with the open / close mechanism and the length of the drain pipe are prevented. The vertical displacement at the midpoint can be performed by the same driving means, and the structure of the driving means is simplified.

  According to the eighth aspect of the present invention, the cleaning water can be used as warm water for effective cleaning, and the cleaning with the cleaning water supply means may be performed from time to time. Therefore, the heater can be an inexpensive heater having a relatively small heating capacity that can be operated by, for example, a 100-volt power source. When cleaning the dust collecting filter by spraying from the nozzle, it is necessary to quickly heat the water flowing in the nozzle water supply pipe to a specific temperature with a heater, which is relatively large. A heater having a capacity must be provided, which is uneconomical.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a whole wet dust collector according to the present invention in a partially opened state, and FIG. 2 is a perspective view showing the whole wet dust collector, in which each member in a casing is taken out outward. 3 is a cross-sectional view of the wet dust collector, FIG. 4 is a perspective view showing a state in which the casing is partially cut, FIG. 5 is a cross-sectional view showing the periphery of a cylindrical filter in the casing, and FIG. FIG. 7 is a rear view showing a cleaning water supply means, a drainage condition changing means and the like by cutting out a part of the wet dust collector, and FIG. The perspective view which looked at the washing water supply means from the direction different from the front, FIG. 9 is the side view which cut out a part of the said wet dust collector, and showed the drainage condition change means, etc. FIG. 10 is the usage example of the said wet dust collector FIG. 11 is a sectional view showing the operation of the wet dust collector. FIG. 12 is an explanatory view showing the operation of the cleaning water supply means by cutting out the wet dust collector, FIG. 13 is a perspective view showing a modification of the drain pipe of the wet dust collector, and FIG. 14 is a cylindrical shape of the wet dust collector. FIG. 15 is a cross-sectional view showing a modification of the filter receiver peripheral structure of the wet dust collector.

  In FIG. 1 to FIG. 3, reference numeral 1 denotes a box-shaped casing which forms a main body, the height is about 800 mm to 3000 mm from the floor surface, the left and right widths and the front and rear widths are about 400 mm to 2000 mm, and the inside is The air passage is a sealed air passage. Specifically, the four surroundings and the upper and lower surfaces are surrounded by flat plates, and an inclined surface portion a1 projecting forward is provided at the lower portion of the front surface 1a. The suction tube 2 is fixed so as to be inclined obliquely rearward and rearward, and a through hole a2 for allowing air to flow out is formed on the upper surface 1b. In addition, the lower surface 1c has a front-lowering shape. The drain port member 3 communicated is extended rearward.

  At this time, a relatively large openable / closable portion a3 is formed on the right side surface 1d. The openable / closable portion a3 includes a rectangular opening b1 and a cover plate b2 that is screwed in a state of covering the opening b1. ing. As shown in FIG. 4, a semicircular ridge c1 having a semicircular cross section is formed in the vicinity of the upper end height of the inclined surface a1 on the four inner surfaces, and at least on the inner surfaces of the front surface 1a and the rear surface 1e. A locking strip c2 is fixed horizontally at a position approximately 200 mm to 400 mm higher than the ridge c1, and the entire casing 1 is supported by the legs 4.

  An exhaust fan 5 for allowing the air in the casing 1 to flow out through the through hole a2 is fixed to the upper surface 1b of the casing 1, and a bendable drain pipe 6 extends from the drain port member 2. Has been issued.

  Reference numeral 7 denotes a filter receiver, which is inserted into the casing 1 from the opening b1 and supported by the protrusion c1. This filter receiver 7 is in a state where the outer peripheral edge portion 7a is airtightly joined to the inner surface of the four circumferences of the casing 1 via the protrusion c1, and a relatively narrow lower tapered surface portion 7b at the center position, A plurality of upper tapered surface portions 7c having a relatively wide width are formed concentrically and continuously, and mist-like water w2 is sprayed onto the upper tapered surface portion 7c in an inclined manner toward the upper side of the center O1 of the tapered surface portion 7b. The nozzles 8 (six in the illustrated example) are fixed in an equally spaced array in the circumferential direction.

  Reference numeral 9 denotes a cylindrical filter whose overall shape is a straight cylindrical body, and is placed concentrically on the upper surface of the upper tapered surface portion 7 c of the filter receiver 7. As shown in FIG. 5, the cylindrical filter 9 has a lower portion that functions as a dust collecting filter 9a and an upper portion that functions as a water droplet scattering prevention filter 9b. Or a metal laminate such as a wire mesh, a punching metal, an expanded metal, or the like may be used. The cylindrical filter 9 in the example shown in the figure is formed into an integral right cylindrical shape, and has annular contact portions d1 and d2 with upper and lower ends projecting outward in the radial direction, and is entirely uniform and slightly elastic. It is supposed to have. At this time, instead of the right cylindrical shape, it may be a polygonal column shape having a polygonal cross section.

  Reference numeral 10 denotes a filter retainer that is inserted into the cylindrical filter 9 in a compact manner. A plurality of vertically oriented rod-shaped members 11 are arranged at equal intervals in a cylindrical shape, and an annular member 12a is provided at each of the upper and lower ends of the rod-shaped members 11. , 12b are fixed, and a horizontal disk member 13 is fixed on the inner side of the central position of the length of the rod-shaped member 11.

  A filter retainer 14 is inserted into the casing 1 through the opening b1 and is supported by the locking strip c2, and is screwed as necessary. This filter retainer 14 is in a state in which the outer peripheral edge portion 14a is tightly joined to the inner surface of the four circumferences of the casing 1 via the locking strip c2, and is formed with a circular hole e1 at the center position and a narrow shape. The width cylindrical portion 14b is formed so as to protrude downward along the outer peripheral edge of the circular hole e1. At this time, the narrow cylindrical portion 14b is inserted into the upper part of the filter retainer 10 under the state in which the filter holder 14 holds the tubular filter 9 as shown in FIG. This contributes to positioning of the upper part of 9.

  Reference numeral 15 denotes a cleaning water supply means for supplying the cleaning water w to the dust collection filter 9a to clean the dust collection filter 9a. The cleaning water supply means 15 causes the tank 16 for storing the cleaning water w and the cleaning water w previously stored in the tank 16 to flow down at any time toward the dust collecting filter 9a at a relatively large flow rate by gravity. And an opening / closing mechanism-equipped water channel 17 that enables this.

  The tank 16 is fixed to the upper part of the rear surface 1e of the casing 1, and as shown in FIG. 6, the tank 16 is sized to receive cleaning water (such as tap water) w of about 10 liters to 20 liters and is accommodated therein. The washing water w is provided with an electric heater 18 for heating to a predetermined temperature set in advance, and the water channel 17 with an opening / closing mechanism includes a circular hole g1 formed at the bottom of the tank 16, and A circular hole g2 formed in the rear surface 1e of the casing 1 that forms the peripheral wall of the sealed space 19 that surrounds the outer periphery of the dust collecting filter 9a that is a part of the cylindrical filter 9 is communicated by the pipe member 20 and is circular. The water channel opening / closing mechanism 21 is formed at the location where the hole g1 exists. The installation location of the tank 16 may be on the upper surface 1 b of the casing 1.

  The water channel opening / closing mechanism 21 may be arbitrary, but in this embodiment, as shown in FIGS. 7 and 8, the weight does not float on the water w and the circular hole g1 is opened and closed by moving up and down. A spherical tank plug 22, a guide cylinder member 23 having a peripheral wall portion 23 a that guides the vertical movement of the tank plug 22 and formed with a water passage hole h 1, and a driving means 24 that vertically moves the tank plug 22. It has been made. At this time, the drive means 24 extends the wire 26 upward from the output member 25a of the cylinder device 25 fixed to the casing 1, and then the guide tube member 27 passes through the guide tube 27 fixed to the tank 16 or the like. Then, the head is further lowered and the tip thereof is connected to the tank plug 22, and when the output member 25a is displaced downward, the tank plug 22 is raised and the circular hole g1 is opened, Conversely, when the output member 25a is displaced upward, the tank stopper 22 is lowered and the circular hole g1 is closed in a liquid-tight manner. The drive source of the cylinder device 25 may be any of air pressure, water pressure, and electricity, and a manual lever or the like may be used instead of the cylinder device. The other water channel opening / closing mechanism 21 may be a mechanism using a valve element such as a ball valve, a butterfly valve, or a gate valve.

 The innermost lowermost portion of the casing 1 functions as a water pool j1, and a drainage state changing means 28 is formed to change the water pool status in the water pool j1. As shown in FIGS. 7 and 9, this water pool state changing means holds the tip of the wire 29 suspended from the output member 25 a on the midway length 6 a of the drain pipe 6 so that the output member 25 a is displaced upward. When this is done, the midway length 6a of the drain pipe 6 is raised, a U-shaped trap k is formed by the drain pipe 6, and the water w flowing down from the upper part of the casing 1 to the water reservoir j1 is the height of the specific liquid level w1. When the amount exceeds this, the excess amount of water w smoothly flows out to the outside through the drainage pipe 6, and conversely when the output member 25a is displaced downward, the drainage pipe 6 is located along the length 6a. 9 is lowered as indicated by the phantom line in FIG. 9 so that the water w flowing down to the water reservoir j1 smoothly flows out through the drain pipe 6 without collecting in the water reservoir j1.

  In the above-described configuration, water w having a pressure of about 0.1 to 0.3 MPa is supplied to the nozzle 8 from a water pipe or pump through a water pipe (not shown) at any time, and tap water w or the like is supplied to the tank 16 at any time. The electric heater 18 is supplied with electric power of 100 volts.

Next, an example of use when the above-described wet dust collector is used in a dust generation source such as a food manufacturing factory and the operation of each part will be described.
As shown in FIG. 10, a dust production source m such as a pan exists in a food manufacturing factory or the like. In this case, the outer periphery of the dust generation source m is surrounded by a hood n, and air suction of the hood n is performed. The mouth location n1 and the air suction cylinder 2 of the wet dust collector A1 according to the present invention are communicated in a gas-tight manner through the duct s. At this time, the periphery of the suction fan 5 of the wet dust collector A1 is covered with an additional casing 30 in an airtight manner, and a functional filter (HEPA filter, activated carbon filter or activated carbon filter) is formed in the air outlet 30a formed on the upper surface of the additional casing 30. A photocatalytic filter 31) is attached.

  Under this state, the suction fan 5 is operated by operating a switch on an operation panel (not shown) to continuously spray the mist-like water w2 from the nozzle 8, and the wash water w is supplied from the water supply into the tank 16. It is assumed that it can be supplied. As a result, the air in the hood 2 flows into the lower part in the casing 1 through the duct s and the air suction cylinder 2 as shown by the arrow v1 in FIG. 3 by the suction force of the suction fan 5, and then the dust collection filter. 9a passes through the filter 9a as shown by the arrow v2 and flows into the sealed space 19, and then passes through the water droplet scattering prevention filter 9b and flows upward as shown by the arrow v3. It passes through the final functional filter 31 shown in FIG. 10 through the fan 5 and is discharged to the atmosphere. On the other hand, mist-like water w2 is jetted from each nozzle 8, and this water w2 flows down on the cylindrical filter 9 and reaches the water reservoir j1, where it accumulates up to the specific liquid level w1 and the specific liquid level w1 height. The portion exceeding this length is drained outward through the drain pipe 6 in the state shown by the solid line in FIG. Further, water w is automatically supplied to the tank 16 to a specific height and is appropriately heated by the electric heater 18.

  Under such circumstances, the operator repeats the work of opening the open / close lid n2 of the hood n and putting powder such as flour into a pan that is the dust generation source m as necessary. Part of the powder thrown into the pan m or the like is scattered in the air, and the suction force of the suction fan 5 together with the dust and the steam generated from the pan and the like. As a result, the air is sucked into the casing 1 through the duct s and the air suction tube 2 together with the atmosphere flowing into the hood n from the open opening n3 of the hood n.

  The air sucked in this way is first directed to the liquid level w1 of the accumulated water w in the liquid reservoir j1, and at this time, a relatively large mass of dust collides with the liquid level w1 and is captured and removed from the air. Then, it goes upward and then changes its direction to the side and passes through the dust collecting filter 9a. At this time, the mist-like water w2 ejected from each nozzle 8 comes into contact with dust in the air. As a result, a relatively small amount of dust is captured by the porous contact material of the dust collecting filter 9a and the water w sprayed from the nozzle 8 and flowing down on the porous contact material. Dust in the air is removed by the filtering action of the porous contact material.

  Air or the like that has passed through the dust collection filter 9a travels upward in the sealed space 19 and then passes through the water droplet scattering prevention filter 9b. The porous contact material of the water droplet scattering prevention filter 9b Captures fine water droplets in the air by the filtering action, and the captured water droplets are gradually accumulated and flow down on the surface of the porous contact material of the water droplet scattering prevention filter 9b to collect dust. It flows down further through 9a. The air that has passed through the water droplet scattering prevention filter 9b has been purified by removing dust and moisture, and this air flows out to the atmosphere through the suction fan 5 and the final functional filter 31. At this time, the functional filter 31 removes a very small amount of remaining dust and odor components, and is provided according to the required cleanliness of the air.

  Dust made of powder such as flour removed from the air under the operating condition of the wet dust collector A1 as described above flows down to the water reservoir j1 together with the water w, and exceeds the specific liquid level w1 height. The water w is continuously discharged to the outside through the drain pipe 6, so that dust is prevented from staying in the casing 1 for a long time, and dust such as flour is rotted in the casing 1. Absent.

  Further, if the dust collecting operation by the dust collecting filter 9a is continuously performed for a long time, the dust collecting filter 9a is clogged and its air permeability is lowered. Thereafter, the air suction operation of the suction fan 5 and the water injection operation from the nozzle 8 are stopped by a switch operation of an operation panel (not shown), and then the cylinder device 25 is shortened to displace the output member 25a downward. This downward displacement raises the tank stopper 22 via the wire 26 to open the circular hole g1, and in conjunction with this, lowers the midway portion 6a of the drain pipe 6 via the wire 29.

  As shown by an arrow v4 in FIG. 11, the opening operation of the circular hole g1 by the tank plug 22 flows down into the sealed space 19 in the casing 1 within a few seconds at a relatively large flow rate due to the gravity of the washing water w in the tank 16. Let The washing water w flowing down in this manner flows in the sealed space 19 so as to go to the dust collecting filter 9a as indicated by an arrow v5 in FIG. 12, and thereafter, the filter 9a is in a vertical cylindrical shape. Since it is a body, it quickly wraps around the entire outer periphery of the filter 9a as shown by the arrow v6 and fills the sealed space 19 so as to reach almost the entire height of the filter 9a. The washing water w filled in this way flows so as to permeate from substantially the entire outer peripheral surface of the dust collection filter 9a to the center side thereof, and thereby adheres to the dust collection filter 9a and becomes clogged. Is pushed away in the direction opposite to the air flow direction by the washing water w and is effectively separated from the porous contact material of the dust collection filter 9a, and the dust collection filter 9a The air permeability is restored.

  On the other hand, the downward displacement of the mid-length portion 6a of the drain pipe 6 causes the water w in the casing 1 to flow outward so that the water pool j1 cannot be pooled. Even if the water flows down and flows into the water reservoir j1 at a relatively large flow rate, the washing water w is smoothly drained to the outside without the liquid level being excessive. At this time, the flow rate of the drainage water in the water reservoir j1 is greatly increased, so that even if dust is about to settle and accumulate in the water reservoir j1, it contributes to forcibly washing off the dust.

  In addition, if a means for mixing the functional liquid into the water w2 sprayed from the nozzle 8 and / or the cleaning water w in the tank 16 is formed, various additional actions such as a cleaning power enhancement action can be obtained. Examples of the functional liquid include a detergent liquid, a disinfectant liquid, a bactericidal liquid, a preservative, a turbidity preventive, a deodorant, a deodorant, and an aromatic.

  Also, when the clogging of the cylindrical filter 9 proceeds excessively, for example, when this is regenerated or renewed elsewhere, or when maintenance inside the casing 1 is performed, the lid b2 is first attached. Next, the filter retainer 14 is separated from the upper surface of the band plate member c2 and pulled out from the opening b1, and then the tubular filter 9 with the filter retainer 10 attached is pulled out, and finally the nozzle 8 is fixed. The filter receiver 7 is pulled out. On the other hand, when restoring these parts, the above procedure is reversed. At this time, the filter retainer 14 and the cylindrical filter 9 are not screw-coupled, the cylindrical filter 9 and the filter receiver 7 are not screw-coupled, and the filter receiver 7 and the casing 1 are not screw-coupled. The members 7, 9, and 14 are attached and detached very easily.

  The casing 1 after the removal of the respective members 7, 9, and 14 is almost empty, and since there are no difficult parts such as screw holes, it is easy to clean. Since 7, 9, 10, and 14 are also in a simple form, they can be easily cleaned individually.

The above embodiment can be modified as follows.
That is, the drain pipe 6 is formed as a rigid pipe, and as shown in FIG. 13, the midway portion 6a of the drain pipe 6 is a U-shaped part, and the U-shaped part 6a is formed in the drain pipes 6 and 6 located on both ends thereof. It is connected in a watertight and continuous manner so as to be relatively rotatable, the U-shaped portion 6a is rotatable about 90 degrees around the center line of the drain pipes 6 and 6 on both sides thereof, and the output member 25a is displaced upward. When the U-shaped portion 6a moves upward as shown in FIG. 13A through the wire 29, and conversely when the output member 25a is displaced downward, the U-shaped portion 6a moves downward as shown in FIG. To move to.

  Further, the peripheral structure of the cylindrical filter 9 may be a structure as shown in FIG. In FIG. 14, the same reference numerals are given to members corresponding to the above embodiment. The cylindrical filter 9A is longer than the cylindrical filter 9 of the above embodiment, and the disk 13 and the nozzle 8 are provided in a plurality of stages (three stages) and outside the outer peripheral surface of the cylindrical filter 9A. Is provided with a plate member 32 for forming a sealed space 19. An intermediate partition plate 33 is fixedly provided in the sealed space 19 so as to correspond to the circular plate 13 and the nozzle 8 of each step, and a plurality (three) of divided sealed spaces 19a, 19b, 19c are formed. Yes. Although not shown in the drawings, according to the previous example, circular holes g1 are provided in each of the 32 plate members located outside the divided sealed spaces 19a, 19b, and 19c, and the washing water w in the tank 16 is provided. It is made to flow in each divided sealed space simultaneously or individually. In this way, the purification process by the dust collecting filter 9a and the water droplet scattering prevention filter 9b is repeated a plurality of times (three times) in series with respect to the same air flow, so that the air purification is further promoted. Further, by forming the cleaning water supply means 15 for each of the divided sealed spaces 19a, 19b, 19c, the dust collecting filter 9a and the water droplet scattering preventing filter 9b, which are the cylindrical filters 9A for each stage, are provided. It will be washed separately.

  Further, the structure around the filter receiver 7 is as shown in FIG. That is, an encircling annular plate 34 that encloses the outer side of the lower tapered surface portion 7b and the lower side of the upper tapered surface portion 7c in a sealed manner to form an annular sealed space h3 is added, and the water inflow holes of each nozzle 8 are annular. It is assumed that the sealed space h3 is open, and on the other hand, a short pipe 35 for water supply extending outward in the radial direction is provided at a specific position in the circumferential direction of the surrounding annular plate 34. This filter receiver 7 is also easily attached to and detached from the casing 1 as in the previous embodiment.

  At this time, a through hole h2 is provided at one location facing the short water supply pipe 35, and a joint tool is fixed to the front end opening of the short water supply pipe 35 through the through hole h2. By means of a tool, a water pipe to which water is pumped from a water pipe or a pump is connected to the water supply short pipe 35 in a continuous manner.

  As a result, a water supply path structure for supplying water w to each nozzle 8 is formed. In this water supply path structure, the filter receiver 7 can be connected to the casing 1 simply by removing the joint tool from the short pipe 35 for water supply. In addition to being freely separated from the air, the air flow in the casing 1 is not hindered.

It is the perspective view of the state where the whole wet dust collector concerning the present invention was shown and a part was opened. It is a perspective view which shows the whole said wet dust collector, and shows the state from which each member in a casing was taken out outward. It is sectional drawing of the said wet dust collector. It is a perspective view which shows the state which cut | disconnected the said casing partially. It is sectional drawing which shows the cylindrical filter periphery in the said casing. It is a perspective view which shows a washing water supply means etc. by excising a part of the wet dust collector. It is a rear view which cuts out a part of said wet dust collector, and shows a washing water supply means, drainage condition change means, etc. It is the perspective view which looked at the said washing water supply means from the direction different from the front. It is the side view which cut out a part of said wet dust collector, and showed the drainage condition change means. It is explanatory drawing which shows the usage example of the said wet dust collector. It is sectional view explanatory drawing which shows the action | operation of the said wet dust collector. It is explanatory drawing which shows the operation | movement of a washing water supply means by excising the said wet dust collector. It is a perspective view which shows the drain pipe of the said wet dust collector. It is sectional drawing which shows the modification of the cylindrical filter periphery structure of the said wet dust collector. It is sectional drawing which shows the modification of the filter receiver periphery structure of the said wet dust collector.

Explanation of symbols

A1 Wet dust collector 1 Casing 6 Drain pipe 6a Halfway point 8 Nozzle 9a Dust collection filter 9b Filter for preventing water droplet scattering 15 Washing water supply means 16 Tank 17 Water channel with opening / closing mechanism 18 Heater j1 Water reservoir w Wash water (water)
w2 misty water

Claims (8)

  A wet dust collector comprising a casing having an air passage sealed inside, wherein a dust collecting filter and a nozzle for injecting mist-like water into the dust collecting filter are provided in the casing. A wet dust collector, wherein the dust collection filter is a vertically-oriented cylindrical body.   A casing having a sealed air passage inside; a dust collecting filter in the casing; a filter for preventing water droplets such as water droplets located downstream of the dust collecting filter; and the dust In a wet dust collector provided with a nozzle for injecting mist-like water into a collection filter, the dust collection filter and the water droplet scattering prevention filter are integrally joined with the same material and are vertically oriented cylindrical Wet dust collector characterized by being made into a body.   3. The wet dust collector according to claim 1, wherein a plurality of nozzles for injecting mist-like water to the dust collection filter are arranged in a substantially concentric ring shape with respect to the dust collection filter. The wet dust collector according to claim 1, 2, or 3, wherein the dust collecting filter and a part provided in the casing on the upstream side thereof are removable.   In a wet dust collector comprising a casing having an air passage sealed inside, and provided with a dust collecting filter for spraying mist water at a specific height in the casing. A cleaning water supply means for cleaning the filter is provided, and the cleaning water supply means has a tank for storing the cleaning water and a relatively large flow rate of the cleaning water in the tank toward the dust collection filter at any time. And a water channel with an opening and closing mechanism that can be caused to flow down by gravity.   In the wet dust collector having a sealed air passage on the inside, a casing provided with a dust collecting filter in the middle of the air passage, and a water reservoir portion formed at the innermost lower portion of the casing, the water reservoir portion A drain pipe for allowing the water flowing down to the outside to flow outward is formed, and a part of the length of the drain pipe is vertically displaceable. When the part of the length of the drain pipe is displaced upward, the drain pipe Is drained while maintaining the state in which water stays up to a specific height of the water reservoir, while the drain pipe drains in a state where water does not stay in the water reservoir when the midway portion of the length is displaced downward. Wet dust collector characterized by that.   In order to clean the dust collection filter, a cleaning water supply means is provided that supplies the cleaning water previously stored in the tank to the dust collection filter by flowing down at a relatively large flow rate by gravity. The wet dust collector according to claim 6, wherein the opening / closing operation of the water channel with an opening / closing mechanism of the washing water supply unit and the vertical displacement of the drain pipe at a midway position thereof are interlocked.   The wet dust collector according to claim 5 or 7, further comprising a heater for heating the cleaning water in the tank.

Images