JP2013184156A - Separation treatment apparatus for powder dust by washing with dry ice - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a separation treatment apparatus for powder dust by washing with dry ice which can effectively separate a powder substance from powder dust containing the powder substance at ultra-low temperature.SOLUTION: A separation treatment apparatus includes a cylindrical trunk body 9-4 having an air intake port to be connected to a hopper for receiving powder dust at ultra-low temperature washed with dry ice at an eccentric position, a plurality of cyclone hoppers 9-4-1 installed in a ring-like state in the cylindrical trunk body 9-4, an air intake inlet formed so slantingly as to lead air eccentrically in the cyclone hoppers 9-4-1, a net installed in the outer circumference of the cyclone hoppers 9-4-1, and a gas discharge filter 9-6 installed above the cyclone hoppers 9-4-1. Powder dust-containing air sucked by a sucking apparatus is filtered by the net for removing dust with large mesh, led through the air intake inlet in the cyclone hoppers and swirled for removing powder dust with small mesh, filtered by the filter, and discharged outside through a discharge port.

Description

The present invention relates to a processing device for dust generated by cleaning an air conditioner or the like using powdered dry ice. Specifically, the powdered material is removed from dust containing powdered material at an ultra-low temperature of minus 30 to 40 ° C. The present invention relates to an apparatus for separating dust to be separated.

A heat exchanger of an air conditioner is required to be periodically cleaned because dust that has passed through the filter adheres during use, and the efficiency of heating and cooling is reduced.
Heat exchangers mainly perform heat exchange with fin-shaped metal pieces. However, using a method such as rubbing with a brush, the fins are deformed, so washing with liquids such as water, warm water, and detergent is almost impossible. It was.

  While the liquid method has an advantage that it can be cleaned without damaging the fins, a large amount of waste liquid containing dust and a surfactant is generated, so that there is a problem that the processing of the waste liquid takes time and cost.

  The inventor has developed a cleaning method in which dry ice is pulverized so as not to damage fins and the like and sprayed on a heat exchanger or the like, and a patent application has been filed earlier. This method was an extremely excellent cleaning method in that dirt was peeled off by rapid vaporization of dry ice, and the attached dust could be effectively removed without damaging the coil fins.

  However, such cleaning produces a large amount of ultra-low temperature dust of minus 40 ° C. containing dry ice, but this dust has a problem that the processing method is not easy.

  The present inventor considered a method of using a cyclone hopper. However, when the apparatus is used with a single-phase 100 volt power source, the separated solid and gas cannot be sufficiently separated, so the separated gas is filtered. The problem was that the filter was clogged immediately. For this reason, it is necessary to frequently replace the filter, so that the dust separation efficiency is lowered.

  This invention is made | formed in view of such a point, and it aims at providing the separation processing apparatus of the dust which can isolate | separate a powdery substance from the dust containing an ultra-low temperature powdery substance effectively.

  The configuration of the present invention that meets the above-described object includes a cylindrical body having an air suction port connected to a hopper that receives dry dust-washed ultra-low-temperature dust, and a ring-shaped body disposed in the cylindrical body. A plurality of cyclone hoppers, an air inlet formed obliquely so that air flows eccentrically into the cyclone hoppers, a wire mesh provided on the outer periphery of the plurality of cyclone hoppers, and an exhaust provided above the cyclone hoppers A filter, and air containing dust sucked by a suction machine removes dust with a large mesh by the wire mesh, and dust flowing from the air suction port of the cyclone hopper swirls to remove dust with a small mesh. The air is filtered through the filter, exhausted through the exhaust port at the upper end of the cyclone hopper, and discharged from the exhaust port to the outside. Dust, characterized in that it is accommodated in the accommodating chamber which is provided continuously to the lower torso the tubular.

  It is preferable that a dust collection power unit including the suction device is coupled above the filter, and air is discharged to the outside from an exhaust port formed in the dust collection power unit.

  The number of cyclone hoppers is preferably 3 to 6. (Claim 3)

  It is preferable that an exhaust pipe penetrates through the lid at the upper end of the cyclone hopper, and that the exhaust pipe is provided with a current plate in order to effectively separate dust and the like (Claim 4).

Preferably, the dust collection power unit is a single-phase 100V exhaust fan. (Claim 5) A connection pipe is provided on a cover of the exhaust filter, and the dust collection power part is connected to the connection pipe. Preferred (claim 6). It is preferable that the mesh of the metal mesh has an opening of 2 to 3 mm.

  The hopper that receives the dust is preferably made of nylon poly because it does not break even at ultra-low temperatures.

According to the present invention, dust with a large mesh is removed by a wire mesh, and dust with a small mesh can be effectively removed by a plurality of cyclone hoppers arranged in a ring shape, so that the filter is frequently clogged. Has been resolved.

It is a perspective view which shows one Example of this invention. It is the side view which made the internal state of the apparatus of FIG. 1 visible. It is the top view which made the state of the inside of the apparatus of FIG. 1 visible. It is the perspective view which made the inside state visible in the state which took the dust collection power part of the upper end. FIG. 5 is a plan view of FIG. 4. FIG. 5 is a front view of FIG. 4. FIG. 7 is a sectional view taken along line BB in FIG. 6. It is AA sectional drawing of FIG. It is a figure which shows the use condition of the apparatus of this invention.

9-1 .... Suction pipe 9-2 ... Exhaust port 9-3 ... Dust collecting power unit 9-4 ... Cylindrical Body 9-4-1 ... Cyclone hopper 9-4-2 ... Air inlet 9-4-3 ... Exhaust pipe 9-4-4 ... .... Rectifying plate 9-4-5 ... Ring-shaped wire mesh 9-5 ... Dust storage tray 9-6 ... Exhaust filter 9-6-2 ... ... Connection pipe

  As shown in FIG. 9, the dust separation processing apparatus of the present invention is disposed between a hopper that receives dust that has been cleaned with dry ice powder and an outdoor exhaust bag 9-2-2.

  1 to 3 show an embodiment of the present invention. A dust storage tray 9-5 is connected to the lower end of the cylindrical body 9-4, and an upper end of the cylindrical body 9-4 is shown. The dust collection power unit 9-3 is connected.

  The cylindrical body 9-4 is provided with a suction pipe 9-1 that sucks dust to be separated at a position that is horizontally offset from the center line of the cylindrical body 9-4.

  As shown in FIGS. 2 and 3, four cyclone hoppers 9-4-1 are arranged in a ring shape in the body 9-4. As shown in FIGS. 7 and 8, an air inlet 9-4-2 containing dust is formed on the upper part of each cyclone hopper 9-4-1 so as to be inclined in the horizontal direction. The air inlet 9-4-2 is configured to form an air flow similar to that connected to the suction pipe 9-1.

  The number of cyclone hoppers 9-4-1 arranged in a ring shape is preferably 3 to 6.

  The cyclone hopper 9-4-1 is formed in a conical shape that tapers downward, the upper part is covered with a lid, and the exhaust pipe 9-4-3 passes through the center of the lid. A rectifying plate 9-4-4 is provided in the exhaust pipe.

  The outer periphery of the ring-shaped cyclone hopper 9-4-1 is covered with a ring-shaped stainless steel wire mesh 9-4-5. Dust with a large mesh is removed by this wire mesh and falls into a large dust storage chamber 9-5-1 connected to a large dust discharge port of the body 9-4. The wire mesh 9-4 plays the role of a pre-filter. The mesh of the wire mesh is preferably a mesh having an opening of 2 to 3 mm, for example, a square having a side of 2 to 3 mm or a circle having a diameter of 2 to 3 mm.

  An exhaust filter 9-6 is connected to the upper end of the body 9-4, and the separated air enters the exhaust filter from the exhaust pipe 9-4-3 of the cyclone hopper and is filtered. The exhaust filter 9-6 is located above the exhaust pipe 9-4-3.

  A connecting pipe 9-6-2 is provided at the center of the lid 9-6-1 of the exhaust filter, and the dust collecting power section 9-3 is connected to the connecting pipe 9-6-2. The dust collection power unit 9-3 includes a suction machine such as a suction pump. The dust collection power unit 9-3 is formed with an exhaust port 9-2 to the outside of the gas after separation of dust (a gas containing a large amount of carbon dioxide). A waste heat ventilation port 9-7 of the dust collection power unit is formed at the upper end of the dust collection power unit 9-3.

  Air containing dust that has been washed with dry ice from the hopper flows from the suction pipe 9-1 of the fuselage by the suction pump of the dust collecting power unit 9-3, and dust with a large mesh is removed by the wire mesh 9-4 and passes through the wire mesh. The air containing the small dust flows from the air inlet 9-4-2 of the cyclone hopper and becomes a vortex, and the dust moves along the conical inner surface while turning by centrifugal force, and the discharge port at the lower end. To the fine dust storage chamber 9-5-2. The air rises on the rising swirl vortex formed at the center of the cyclone hopper 9-4-1, stops rotating by the rectifying plate 9-4-4 in the exhaust pipe, and is smoothly filtered by the exhaust filter 9-6. Is done. The rotation of the air is stopped by the rectifying plate 9-4-4, thereby preventing the dust and the like from being rolled up.

  The filtered air is pressurized by the dust collecting power unit (single-phase 100V exhaust fan) 9-3, and passes through the conveyance hose from the exhaust port 9-2 of the body 9-4 to the outdoor cloth exhaust bag 9-. The air (mainly carbon dioxide) flows from the exhaust bag into the outside air.

  Since the air containing dust is mainly carbon dioxide gas, there is a risk of oxygen deficiency when it is released indoors, so it is released outdoors.

  FIG. 9 shows a state of use of the apparatus of the present invention. The apparatus of the present invention collects dust cleaned with dry ice powder, and discharges the dust in the hoppers 5-4, 6-4, and 7-3. 8-4 are connected to the dust carrying hose 9-1-1 connected to the body 9-4 of the apparatus of the present invention. The hopper is formed of hopper sheet reinforcing frames 5-2, 6-2, 7-2, 8-2 and hopper sheets 5-1, 6-1, 7-1, 8-1.

  Since dust is very low temperature of minus 30 ° C. to minus 40 ° C., the hopper sheet uses nylon poly. It is because it will be destroyed if normal plastic is used.

  FIG. 9 shows a case where a ceiling-embedded air conditioner, a ceiling-suspended air conditioner, an air hanger, and a wall-mounted air conditioner are cleaned.

  In the case of a ceiling-embedded air conditioner or a ceiling-suspended air conditioner, an injection nozzle insertion port is formed in the hopper sheet. 5-3-2 and 6-3-2 are states where the injection nozzle is inserted, and 5-3-1 and 6-3-1 are states where the injection nozzle is not used (a state where outside air is blocked). ).

As shown in FIG. 9, cleaning is performed by spraying 2-9 dry ice onto the object to be cleaned from the spray nozzle unit 2-0.
The elongated cylindrical injection nozzle unit 2-0 includes a dry ice suction port 2-3 at the rear end, a mixing unit 2-2 for air supplied from an air supply port 2-5, and a dry ice injection port 2 -1. Air is supplied from the air compressor 3-1 to the injection nozzle unit 2-0 through the air supply hose 3-2. In the figure, 2-4 is an air amount adjustment valve, and 2-6 is an ON / OFF trigger lever for dry ice injection. Dry ice particles are mixed with air and melted slightly to be powdered.

  The dry ice pellets 1-1 are granulated from the dry ice hopper 1-2 by a pulverizer 1-3, and are sent out by a dry ice delivery motor 1-4 through a dry ice delivery mechanism 1-5 to deliver dry ice particles. It introduce | transduces into the cylindrical injection | spray nozzle unit part 2-0 from the hose 1-7. In the figure, 1-6 is an air suction adjusting valve, 4-1 is a dry ice supply controller to the dry ice feed mechanism, and 4-2 is for controlling the size of the dry ice particles. ON / OFF control signal, 4-3 is a dry ice supply amount operation ON / OFF control signal, 4-4 is an air intake valve adjustment control signal, and 4-5 is It is a signal for turning on / off the injection nozzle.

According to the present invention, dust with a large mesh is removed by a wire mesh, and dust with a small mesh can be effectively removed by a plurality of cyclone hoppers arranged in a ring shape, so that the filter is frequently clogged. Therefore, it is expected to be used for cleaning air conditioners using dry ice.

Claims (8)

A cylindrical body having an air suction port connected to a hopper that receives dry ice-cleaned ultra-low temperature dust at an eccentric position, a plurality of cyclone hoppers arranged in a ring shape in the cylindrical body, and the cyclone hopper Air suction ports formed obliquely so that air flows in eccentrically, a metal mesh provided on the outer periphery of the plurality of cyclone hoppers, and an exhaust filter provided above the cyclone hoppers, and sucked by a suction machine The dust-containing air removes dust with a large mesh by the wire mesh, dust flowing from the air inlet of the cyclone hopper swirls to remove dust with a small mesh, and the air is filtered by the filter. The dust discharged through the exhaust port at the upper end of the cyclone hopper and discharged from the exhaust port to the outside is connected to the lower part of the cylindrical body. Separation processing apparatus of dust by a dry ice cleaning, characterized in that it is housed in the housing chamber has. The dust separation processing apparatus according to claim 1, wherein a dust collection power unit including the suction device is coupled above the filter, and air is discharged to the outside from an exhaust port formed in the dust collection power unit. The dust separation processing apparatus according to claim 1 or 2, wherein the number of cyclone hoppers is three to six. The dust separation processing apparatus according to any one of claims 1 to 3, wherein an exhaust pipe passes through the lid at the upper end of the cyclone hopper, and the exhaust pipe is provided with a rectifying plate. The dust separation processing apparatus according to any one of claims 2 to 4, wherein the dust collection power unit is a single-phase 100V single-phase 100V exhaust fan. The dust separation processing apparatus according to any one of claims 2 to 5, wherein a connection pipe is provided on a lid of the exhaust filter, and the dust collection power unit is connected to the connection pipe. The dust separation processing apparatus according to claim 1, wherein the mesh of the wire mesh has an opening of 2 to 3 mm. The dust separation processing apparatus according to any one of claims 1 to 7, wherein the hopper that receives the dust is formed of nylon poly.

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