JP2004082028A - Collected dust removal device and air shower equipment provided with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide air shower equipment provided with a collected dust removal device capable of certainly sucking and removing collected dust stored in a hopper to the outside without clogging a suction pipe (suction hose) with the dust and without leaving the dust in the hopper even in a device having small capacity and weak suction force such as a cleaner of small size and a dust collector. <P>SOLUTION: In the collected dust removal device, a suction pipe 9 to which a suction action of the cleaner or the dust collector 15 is affected is connected to the hopper 5 recovering the dust and a suction port 8 of this suction pipe 9 is opened toward a inner bottom part of the hopper 5. An injection nozzle 13 of compressed air is provided at the inner bottom part of the hopper 5 and a secondary air introduction pipe 10 is continuously provided on the suction port 8. A dust collector of the air shower equipment is provided with this collected dust removal device. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a dust collection device for extracting and collecting collected dust outside a hopper, and an air shower device provided with the dust collection device.
[0002]
[Prior art]
As for the prior art relating to the dust collecting device, the ash collected by the cyclone as disclosed in, for example, “Ash extracting device of a dust collecting device” disclosed in Japanese Patent Application Laid-Open No. H10-296130 is used. There is a structure that once deposits in the ash extraction part main body provided in the above, makes it fly up with the stirring nozzle, and sends out the ash from the suction port to the outside through the transfer pipe with the carrier gas injected from the transfer gas pipe. I do.
[0003]
As for the prior art of an air shower device, as disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-41521, dust (hazardous substances such as dioxin) scattered in an air shower chamber is provided in an adjacent air purification chamber. There is a type in which collected dust is collected in a hopper of a dust collector, extracted to the outside with a vacuum cleaner or a dust collector, and treated for handling industrial exhausts.
[0004]
Further, as for the dust extracting device in the air shower device, the vacuum cleaner or the dust collector (see FIG. 5) is provided on the bottom surface of a hopper type collection chamber HP provided below the dust collection chamber X as shown in FIG. And a suction box RP (suction hose) connected to one side of a dust box type collection chamber HP 'as shown in FIG. And exists.
[0005]
In FIGS. 5 and 6, F is a filter (bag filter) suspended inside the dust collecting chamber X, AT is a dust collecting blower exerting a suction action on the dust collecting chamber X, and AM is its blower motor. , KZ denotes a dust removing device including a tank of compressed air, K denotes a blow tube for blowing compressed air for backwashing (for dust removal) into the filter F, and KP denotes an air inlet for blowing air.
[0006]
[Problems to be solved by the invention]
However, the extracting device disclosed in the former publication has a configuration in which the ash is sent out from the suction port to the outside with the help of the carrier gas injected from the carrier gas pipe. However, there was a problem that equipment costs were increased.
[0007]
Further, in the air shower apparatus disclosed in the latter publication, collected dust is collected in a collection chamber, and the collected dust is extracted to the outside by using a suction force of a vacuum cleaner or a dust collector. As shown in FIG. 5, when the suction pipe RP is connected to the bottom surface of the hopper type recovery chamber HP and suction is performed from below, all the dust accumulated in the hopper HP cannot be moved. There was a problem that much unusable dust remained. Furthermore, since the dust is sucked at once at the same time as the operation of the vacuum cleaner and the dust collector (recovery machine), there is also a problem that if the capacity of the vacuum cleaner or the dust collector is insufficient, the dust is clogged and blocked in the suction pipe RP. Was.
[0008]
Further, when the collection chamber is a dust box-type collection chamber HP 'as shown in FIG. 6, dust near the connection port to which the suction pipe RP is connected can be sucked and collected as shown in FIG. Dust in a farther part cannot be caused to flow by the suction force of the vacuum cleaner or the dust collector, so that there is a problem that most of the dust remains in the collection chamber HP '.
[0009]
Therefore, the technical problem of the present invention is that even if the capacity is small and the suction power is weak, such as a small vacuum cleaner or a dust collector, the suction pipe (suction hose) is clogged with dust or the dust is stored in the hopper. An object of the present invention is to provide a dust collecting dust extracting device devised so that dust collected in a hopper can be reliably sucked to the outside without being left, and an air shower device provided with the extracting device.
[0010]
[Means for Solving the Problems]
(1) In order to solve the above technical problem, a dust collecting dust extracting device according to claim 1 of the present invention collects dust collected in a hopper and sucks the collected dust by a vacuum cleaner or a dust collector. What is claimed is: 1. A dust collection device for extracting dust from a hopper through a suction pipe having an effect, wherein a nozzle for injecting compressed air toward the inside of the hopper is provided at a bottom of the hopper, and dust suction of the suction tube is performed. The mouth is opened toward the inner bottom of the hopper, and the suction port is provided with a secondary air introduction pipe capable of introducing air in the hopper to the suction pipe.
[0011]
(2) A dust collecting device according to a second aspect of the present invention is the dust collecting device according to the first aspect, wherein a root end side of the secondary air introduction pipe is provided inside the hopper. The suction pipe opened toward the bottom is provided so as to protrude inside the dust suction port, and the distal end side of the secondary air introduction pipe is protruded upward in the hopper.
[0012]
(3) The dust collecting device according to claim 3 of the present invention is the dust collecting device according to claim 1 or 2, wherein the secondary air introduction projecting upward in the hopper. The distal end of the tube is bent downward above the level of dust accumulation.
[0013]
(4) In the air shower device provided with the dust collecting dust extracting device according to claim 4 of the present invention, a shower chamber and an air purification chamber communicating with each other through an air flow passage are formed in a main body, and the shower chamber is separated from the shower chamber by a blower. The air sucked into the air purification chamber through the air flow passage is filtered by a filter, and the filtered air is circulated and sent out from the air nozzle into the shower chamber by the blowing action of the blower, so that the air adheres to the clothes and the like of the occupants. An air shower device configured to remove dusts, using a bag filter as the filter, providing a hopper for collecting dust collected on a lower side of the bag filter, and collecting the dust in the hopper. The dust is drawn out of the hopper through the suction pipe that the suction of the vacuum cleaner or dust collector can reach. A nozzle is provided at the bottom of the hopper for injecting compressed air toward the inside of the hopper, and a dust suction port of the suction pipe is opened toward the inner bottom of the hopper, and the air in the hopper is sucked into the suction port. A secondary air introduction pipe that can be introduced into the pipe is provided.
[0014]
(5) The air shower device provided with the dust collecting dust extracting device according to claim 5 of the present invention is the air shower device according to claim 4, wherein the secondary forming the dust collecting dust extracting device is the secondary device. The root end side of the air introduction pipe is provided so as to protrude inside the dust suction port of the suction pipe opened toward the inner bottom of the hopper, and the tip end side of the secondary air introduction pipe is located above the inside of the hopper. It is characterized by projecting toward.
[0015]
(6) The air shower device provided with the dust collecting dust extracting device according to claim 6 of the present invention is the air shower device according to claim 4 or 5, wherein the air shower device comprises the dust collecting dust extracting device. The secondary air introduction pipe protruding upward in the hopper has a distal end bent downward above the dust accumulation level.
[0016]
According to the dust collecting device according to the first aspect of the present invention described in the above (1), when suctioning and collecting the dust collected at the bottom in the hopper, first, the air nozzle provided at the bottom of the hopper Compressed air is sprayed from the hopper to fluidize the dust, the suction action of the vacuum cleaner or dust collector is applied to the bottom of the hopper through the suction port of the suction pipe, and the suction action of the suction pipe is further performed through the secondary air introduction pipe. Since the dust is applied to the inside, the dust is sucked in an extremely good state without causing a so-called clogging state, and the dust inside the hopper is smoothly removed without leaving a portion where the dust is partially sucked and not sucked. Also, it is possible to achieve a configuration in which the components are uniformly extracted to the outside.
[0017]
According to the dust collecting dust extracting device according to claim 2 of the present invention described in the above (2), the secondary air is introduced in a direction opposite to the flow of the powder sucked from the suction port of the suction tube. Therefore, collision phenomena occur with each other, and the dispersion of the powder becomes more effective, and the clogging phenomenon in the suction pipe is prevented, so that the dust can float more and can be put on the air flow. This configuration also eliminates the need to use a dust-collecting device with a large suction capacity, even when extracting large amounts of dust accumulated in the hopper, and takes in secondary air even for small-sized vacuum cleaners and dust collectors. By sucking the dust, it is possible to send the dust little by little to an external dust collector or a filter pack of a vacuum cleaner and collect it.
[0018]
According to the dust collecting dust extracting device according to the third aspect of the present invention described in the above (3), the tip of the secondary air introduction pipe on the introduction air inlet side is bent downward above the dust accumulation level and attached. Therefore, during the dust removing operation of the bag filter, it is possible to prevent the lump of dust from directly falling into the inlet air inlet of the secondary air inlet pipe.
[0019]
In the air shower device provided with the dust extracting device according to the fourth, fifth, and sixth aspects of the present invention described in the above (4), (5), and (6), the dust is not extracted or extracted in the device. Therefore, there is no fear that harmful dust is scattered around again, and a completely closed system for collecting dioxins and the like can be constructed. In addition, the connection port of the dust extraction hose of the vacuum cleaner and dust collector can be provided inside the main body of the air shower device and connected, or it can be performed outside the main body. Since dust can be extracted while circulating air, the air shower device can be used safely, sanitarily, and functionally.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a dust collecting device according to the present invention will be described below with reference to FIG. 1. In the drawing, reference numeral 1 denotes a dust collecting device, and 2 denotes a clean room inside the body of the dust collecting device 1. .., 2T... Are bag filters suspended from the partition plate 2, 4 A is a dust-containing airflow inlet opening on one side of the dust collecting chamber 4, and 5 is a dust filter. A hopper connected to the bottom of the dust collecting chamber 4, a blower 6 provided at the upper part of the cleaning chamber 3, a blower motor 6M, and when the blower 6 is operated, the dust-containing air flow is collected from the inlet 4A. The dust is collected in the dust chamber 4 and collected by the bag filters 2T, and the clean air after the dust collection is exhausted from the clean chamber 3 to the outside through the blower 6.
[0021]
7 is a dust removing device including a storage tank of compressed dust removing air for removing dust collected in the bag filter 2T, 7A is a blow tube of compressed dust removing air, and 7B is compression blown from the blow tube 7A. Dust DS blown out from the bag filters 2T by compressed air for dust removal which is blown periodically or as needed when air is blown into each of the bag filters 2T. , Which is temporarily stored in the lower hopper 5.
[0022]
Reference numeral 9 denotes a suction pipe (duct) provided on one side of the hopper 5 for collecting dust. Reference numeral 8 denotes a dust suction port of the suction pipe 9 inserted inside the hopper 5 so as to be positioned below the dust level. The suction port 8 provided in the hopper 5 is bent in a substantially L-shape (right angle) with respect to the suction pipe 9 inside the hopper 5 as shown in FIG. It is configured to be open toward.
[0023]
Reference numeral 10 denotes a secondary air introduction pipe protruding above the suction port 8 so as to face upward from the hopper 5, and a tip side (upper end side) of the secondary air introduction pipe 10 is a stack of the dust DS. A secondary air introduction port 10A is formed to be bent downward above the level. The root end 10B protrudes toward the bottom.
[0024]
An injection nozzle 11 has a root end connected to the compressed air storage tank 7 of the dust removal device 7 and a tip end provided on the inner bottom surface of the hopper 5 via opening / closing valves 12V, 12V and injection pipes 12P, 12P. 13 shows a compressed air supply pipe connected to 13,13. Reference numeral 14 denotes a suction hose connected to the outer end connection port 9A of the suction pipe 9, and reference numeral 15 denotes a vacuum cleaner or dust collector which exerts a suction action for dust collection through the suction hose 14 and the suction pipe 9 to the inside of the hopper 5. Reference numeral 15X indicates a dust collecting fan, and 15Y indicates a dust collecting filter.
[0025]
Since the dust collecting dust extracting device according to the present invention is configured as described above, the dust DS that has been washed off from each bag filter 2T and accumulated in the hopper 5 can be sucked by the operation of the vacuum cleaner or the dust collector 15, By exerting on the suction port 8 provided in the hopper 5 through the suction hose 14 and the suction pipe 9, the suction can be performed toward the cleaner or the dust collector 15, and the suction can be taken out of the hopper 5 and collected. In particular, in extracting and collecting the dust DS, compressed air is jetted toward the accumulated dust DS from the nozzles 13 provided on the inner bottom surface of the hopper, and the dust DS is fluidized in the hopper 5. Therefore, it is possible to suck the dust DS very smoothly.
[0026]
Secondary air is introduced from the secondary air introduction pipe 10 into the suction port 8 in a direction opposite to the flow of the dust DS sucked from the suction port 8 of the suction pipe 9, and the lower end port 8T of the suction port 8 is formed. Since the dust DS sucked from the air and the introduced secondary air collide with each other inside the suction port 8, the dust DS is more effectively dispersed, and the dust DS is dispersed in the suction pipe 9 and the hose 14. In this way, the dust DS can be prevented from being clogged, and the dust DS can be suspended so that the dust DS can be carried on the suction air flow. As a result, even when a large amount of dust DS is accumulated in the hopper 5, the dust DS can be reliably extracted to the cleaner or the dust collector 15 while taking in the secondary air.
[0027]
Further, since the secondary air inlet 10A at the distal end of the secondary air inlet pipe 10 is bent downward above the accumulation level of dust DS (the upper limit of accumulation), the dust removing operation of the bag filter 2T is performed. As a result, the lump of dust DS falling into the secondary air inlet 10A does not clog, so that the secondary air can be taken in without trouble.
[0028]
Next, an embodiment of an air shower device provided with the dust collecting dust extracting device configured as described above will be described with reference to the drawings. FIG. 2 is a configuration diagram illustrating the whole of the present invention. Is a main body of the air shower apparatus, 24 and 22 are a shower chamber and an air purification chamber partitioned and formed inside the main body 20, and 24H is a shower chamber 24 configured to allow a person to enter. , 27A is an air flow passage connecting these two chambers 24 and 22, 27D is a duct constituting this flow passage 27A, and 23 and 23H are spaces between the main body 20 provided so as to surround the periphery of the shower chamber 24. In the passage, this passage forms an air duct for clean air. The dust collecting device 1 provided with the above-described dust collecting dust extracting device according to the present invention is installed inside the air purification chamber 22.
[0029]
Reference numeral 26 denotes a floor plate (bottom plate) of the shower chamber 24 made of a ventilation plate such as a perforated plate or a lattice plate. Reference numeral 27 denotes a shooter chamber provided below the floor plate 26. The dust-containing air passage 27A communicates with the air passage 27A, and the tip end of the air passage 27A is opened to the dust collection chamber 4 of the dust collection device 1 installed in the air purification chamber 22. It is connected to the airflow inlet 4H.
[0030]
25 are air nozzles mounted on the wall surface of the shower chamber 24 so as to face the interior 24H, and these air nozzles 25 pass through the air flow passage 27A from the shower chamber 24 by the rotation of the blower 6. , And is filtered and cleaned through primary and secondary filters, that is, bag filters 2T, and high-performance filters and / or activated carbon filters 21X. The clean air sent to the air ducts 23, 23H... Is vigorously jetted (circulated) into the shower room 24H to clean the dust and the like adhered to the clothing and body of the person entering the shower room 24H. It is a mechanism to pay off.
[0031]
Reference numeral 21 denotes a partition wall which defines the air purification chamber 22 inside the main body 20. The high-performance filter and / or the activated carbon filter 21X described above are attached to an upper communication port of the partition wall 21. 9Z is a cap that covers the connection port 9A (see FIG. 1) of the suction pipe 9 on the side of the dust collection device 1 that is piped into the shower chamber 24H, and is used to suck and extract the dust DS accumulated in the hopper 5. As shown in FIG. 3, a vacuum cleaner or a dust collector 15 is connected to the connection port 9A via a hose 14, and a suction operation (withdrawal operation) is performed.
[0032]
FIG. 4 shows a state in which the connection port 9A of the suction pipe 9 is piped to the outer wall surface of the main body 20, and the operation of extracting the dust DS by the vacuum cleaner or the dust collector 15 is performed outside the air shower device. When the dust DS is extracted by installing the vacuum cleaner or the dust collector 15 in the shower room 24H shown in FIG. 3, any of the methods of extracting the dust DS outside the main body 20 as shown in FIG. Also in this case, there is no fear that the harmful dust DS scatters directly to the surroundings, and the collection of dioxins and the like can be performed in a completely closed state.
[0033]
Further, the dust DS can be extracted by the vacuum cleaner or the dust collector 15 while the operation of the dust collector 1 and the air shower device is stopped, or the dust DS is kept in the state of FIG. In this case, the dust DS can be extracted while circulating the exhaust gas from the vacuum cleaner or the dust collector 15 to the dust collector.
[0034]
In using the air shower device configured as described above, first, when a door (not shown) provided at the entrance of the shower room 24 is opened and a person enters, an entrance sensor (not shown) detects the entrance. To operate the blower 6.
[0035]
When the blower 6 starts operating, air is taken into the dust collecting device 1 from the shower chamber 24 through the air flow passage 27A, filtered by a back filter 2T, and then further passed through a high performance filter and / or an activated carbon filter 12X. High-performance filtration and adsorption treatment of various exhaust gases such as high-temperature acid gas are performed. Then, purified air that has been subjected to such filtration and purification treatment is passed through air ducts 23, 23H. (Circulation) to remove dust adhering to clothes, body, etc. of the occupant.
[0036]
The dusts blown off by the air shower sprayed from each of the air nozzles 25 receive the suction action of the blower 6 and ride on the dust-containing airflow, pass through the shooter chamber 27 and the air flow passage 27A, and collect the dust. And is filtered by the bag filter 2T and the high-performance filter and / or the activated carbon filter 21X. After that, the dust collected by the bag filters 2T is removed to the hopper 5 by the dust removing device 7.
[0037]
Although not shown, the shower chamber 24 and the dust collecting chamber 4 are connected to each other through an air passage provided with a switching valve, and when the dust is removed by the air shower, the air passes through the air passage. Of the dust that has been blown off, the relatively light-weight small dust is directly sucked into the dust collection chamber 4 side, and after cleaning by air shower, a person leaves the shower chamber 24 and an exit sensor (not shown) is provided. When the exit is detected, the switching valve is switched so that the suction action of the blower 6 extends only to the shooter chamber 27, so that the weight of the weight dropped and accumulated on the floor of the shower chamber 24 is reduced. Heavy heavy dusts are taken into the shooter chamber 27 through the floor plate 26 made of a ventilation plate such as a perforated plate or a grid plate, and the taken dusts are collected from the air flow passage 27A. And sucked into the chamber 4 side, it may be configured to clean the shooter chamber 27 and Shiyawa chamber 24.
[0038]
Heavy dust sucked toward the dust collecting chamber 4 through the shooter chamber 27 and the air flow passage 27A as described above is collected by the bag filters 2T of the dust collecting chamber 4. However, in an environment where exhaust gas is sucked together with these dusts, for example, a bag filter 2T is pre-coated with a neutralizing agent or an adsorbent using an injection device (not shown), and the pre-coating is performed. The exhaust gases may be neutralized or adsorbed by a layer of neutralizing agent or adsorbent being applied.
[0039]
Next, the dust removed from the bag filter 2T to the dust collecting hopper 5 by the dust removing device 7 and the neutralizing agent or the adsorbent adsorbing the exhaust gas are completely closed without scattering to the outside. While maintaining the slipping state, the liquid is suctioned and collected to the cleaner or the dust collector 15 through the suction pipe 9 and the hose 14.
[0040]
Therefore, for example, even if harmful substances such as dioxin are attached to clothes (work clothes, etc.) as a result of performing work in an environment such as an incineration facility, these harmful substances are removed by air shower in the shower room 24H. After the dust is collected by the bag filter 2T, the dust is not dropped to the dust collecting hopper 5 and scattered around, and the suction pipe 9 and the hose 14 are clogged with the dust DS. In addition, all the dust DS in the hopper 5 can be safely and reliably extracted to the cleaner or the dust collector 15 and collected.
[0041]
【The invention's effect】
As described above, according to the dust collecting dust extracting device according to the present invention, the dust removed from the bag filter to the hopper by the dust removing device is not clogged in the suction pipe or the hose, and also in the hopper. It can be used smoothly for small vacuum cleaners and dust collectors, and can be collected out of the hopper without being left in the hopper, so that a dust extraction device excellent in safety and functionality can be provided. In addition, according to the air shower device provided with the dust collecting dust extracting device, the dust attached to the clothes and the like is very dirty, and in the case where many harmful substances such as dioxin are attached. Even if it is possible, these dusts and harmful substances can be securely removed by air shower and can be collected safely, reducing the clogging of the filter and eliminating wasted time spent for filter replacement and dust removal work. As much as possible, one blower can be used efficiently to make the whole equipment compact and low cost, and the dust discharged to the hopper can be safely and reliably extracted to the outside. In addition to this, it is particularly suitable for use in an environment where heavy dust and harmful substances are attached.
[Brief description of the drawings]
FIG. 1 is a configuration diagram illustrating the entirety of a dust collection dust extraction device according to the present invention.
FIG. 2 is a configuration diagram illustrating the entirety of an air shower device according to the present invention including the above-described dust collection dust extraction device.
FIG. 3 is a configuration diagram illustrating a state in which dust collection dust is extracted.
FIG. 4 is a configuration diagram of a main part illustrating a state in which dust collection dust is extracted outside the air shower device.
FIG. 5 is a configuration diagram of a conventional device illustrating a residual state of dust collection dust.
FIG. 6 is a configuration diagram of a conventional device illustrating another example of a residual state of dust collection dust.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dust collection device 2T Bag filter 4 Dust collection room 5 Hopper 6 Blower 7 Dust removal device 8 Suction port 9 Suction pipe 10 Secondary air introduction pipe 13 Compressed air injection nozzle 14 Hose 15 Vacuum cleaner or dust collector DS dust 20 For air shower device Main body 24 Shower chamber 25 Air nozzle

Claims (6)

A dust collecting dust extracting device configured to collect collected dust in a hopper, and to extract the collected dust to the outside of the hopper through a suction pipe having a suction function of a vacuum cleaner or a dust collector,
A nozzle is provided at the bottom of the hopper for injecting compressed air toward the inside of the hopper, and a dust suction port of the suction pipe is opened toward the inner bottom of the hopper. The suction port sucks the air in the hopper. A dust-collecting dust extraction device comprising a secondary air introduction pipe that can be introduced into the pipe. A root end side of the secondary air introduction pipe is provided to protrude inside a dust suction port of a suction pipe opened toward an inner bottom of the hopper, and a tip end side of the secondary air introduction pipe is connected to the hopper. 2. The dust collecting device according to claim 1, wherein the dust collecting device protrudes upward. The dust collecting device according to claim 1, wherein a tip end side of the secondary air introducing pipe protruding upward in the hopper is formed to be bent downward above a dust accumulation level. 4. Dust extraction device. Inside the main body, a shower chamber and an air purification chamber communicating with each other through an air flow passage are formed, and the air sucked from the shower chamber into the air purification chamber through the air flow passage by a blower is filtered by a filter, and the filtered air is filtered by the blower. An air shower device configured to blow off dust adhering to clothes and the like of a room entrant by circulating the air from the air nozzle into the shower room by an air blowing action,
A bag filter is used as the above-mentioned filter, and a hopper for collecting the collected dust is provided at a lower portion of the bag filter, and the collected dust is transferred to the hopper through a suction pipe which is operated by a vacuum cleaner or a dust collector. At the bottom of the hopper, a nozzle for injecting compressed air toward the inside of the hopper is provided, and a dust suction port of the suction pipe is opened toward the inner bottom of the hopper. And a secondary air introduction pipe capable of introducing air in the hopper into the suction pipe. A root end side of the secondary air introduction pipe constituting the dust collection dust extraction device is provided so as to protrude inside a dust suction port of a suction pipe opened toward an inner bottom of the hopper, and this secondary air is provided. The air shower device provided with the dust collecting dust extracting device according to claim 4, wherein the leading end side of the introduction pipe is projected upward in the hopper. The tip end side of a secondary air introduction pipe protruding upward in the hopper constituting the dust collection dust extraction device is formed to be bent downward above a dust accumulation level. Item 6. An air shower device provided with the dust collecting dust extracting device according to item 4 or 5.

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