JP2005240578A - Sand dust removal filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sand dust removal filter capable of flexibly coping with the fine and rain of weather and the change of wind direction by effectively removing sand dust in an intake air and preventing rain water from entering. <P>SOLUTION: In this sand dust removal filter installed at the intake port of the blower of an air-inflated tent, a foreign matter suction prevention net, a filter material, and a filter support net are held by a dome type tool and an inlet port mounting tool. The dome type tool comprises an intake window in the side face, and is formed to be rotatable around an axis in the intake direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dust removal filter. More specifically, the present invention is a dust removal filter that is attached to the air inlet of an air-expandable tent blower, effectively removing dust in the intake air, preventing intrusion of rainwater, The present invention relates to a dust removal filter that can respond to changes freely.

A skeleton is formed from an arched vertical air column composed of inflatable air chambers and a horizontal air column connected between the vertical air columns, and the top surface and all four side surfaces of the skeleton are covered with a tent, and the floor Air-expandable tents with materials are used as primary accommodation for victims in disasters, resting places for rescue workers, temporary warehouses at construction sites, and various event venues. Such an inflatable tent can be transported by a small number of people and can be used by anyone quickly and safely in an emergency. Currently, air inflatable tents with a floor area of about 16 to 90 m ² and a height of about 2.5 to 3.5 m are manufactured and sold. FIG. 3 is an example of a perspective view showing a state where the air-expandable tent is extended, and a plan view, a side view, and a front view thereof.
Since air-expandable tents are often used in emergency situations, it is required to complete the expansion in a short time. The expansion is completed within 2 minutes when using an air compression cylinder and within 5 minutes when using a blower. It is requested. Accordingly, a relatively large fan is used. FIG. 4 is an explanatory diagram illustrating an example of a usage state of the blower. The blower 8 is driven by the electric power sent from the generator 7, the air is sent from the air supply port 9 via the hose 10, is distributed to the plurality of hoses 12 in the distribution pipe 11, and passes through the charge port 13. Thus, air is sent into the air column 14. When dust is wound up by the intake air sucked into the blower, the dust enters the blower. Although a plastic sheet or the like is laid on the ground surface and a blower is placed on the plastic sheet, a helicopter may take off and land nearby and a large amount of dust may rise during the expansion work of the air expansion tent. Inflatable tents may also be used in areas where sandstorms are strong. When a large amount of dust is sucked into the air blower together with the intake air, the air blower burns out and breaks down and becomes unable to rotate. Even if the blower does not break down, the dust that is sent to the air column of the air-expandable tent together with the air stays in the air column of the tent and causes deterioration of the tent material.
In case of rain, raindrops are sucked into the blower along with the intake air. Inflatable tents are deployed in storms, and a non-negligible amount of rainwater may be sent into the air column of the inflatable tent. A part of the water fed into the tent is discharged together with the air during the exhaust, but the remaining part stays inside the tent's air column, which causes the wet heat deterioration of the tent material.
Therefore, there is a demand for means capable of preventing dust from being sucked into the blower and preventing rainwater from entering the air column of the air-expandable tent.

  The present invention is a dust removal filter attached to the air inlet of an air expansion tent blower, which effectively removes dust in the intake air, prevents intrusion of rainwater, and is free from weather in the rain and changes in wind direction. The object of the present invention is to provide a dust removal filter that can be used.

As a result of intensive studies to solve the above problems, the present inventor attached a dome-shaped jig having an intake window on the side surface to the tip of the dust removal filter, and the jig can be rotated about the intake direction. It has been found that the structure can effectively prevent the intrusion of dust or rain water by changing the position of the air intake window in response to changes in the weather and wind direction, and the present invention has been completed based on this knowledge. It came to do.
That is, the present invention is a dust removal filter that is attached to an air inlet of a blower of an air expansion tent, and a foreign matter suction prevention net, a filter material, and a filter support net are sandwiched between a dome-shaped jig and an air inlet attachment jig. The dome-shaped jig has a suction window on its side surface and is rotatable about the suction direction as an axis.

  By attaching the dust removal filter of the present invention to the air inlet of the blower of the air expansion tent, even if the dust is swirling, it prevents the dust from being sucked into the blower and stabilizes the blower without causing failure. Can drive. By using the dust removal filter of the present invention, dust is not sent into the air column of the air inflatable tent, and even in heavy rain, rainwater enters the air column of the air inflatable tent. No air is sent in, the inside of the air column is kept clean, deterioration of the tent material is prevented, and the life of the inflatable tent can be extended.

The dust removal filter of the present invention is a dust removal filter that is attached to the air inlet of a blower of an air expansion tent, and the dome-shaped jig and the air inlet attachment jig are provided with a foreign matter suction prevention net, a filter material, and a filter support net. It is a dust removal filter that is sandwiched and has a dome-shaped jig having an intake window on its side surface and is rotatable about the intake direction.
FIG. 1 is a perspective view of one embodiment of the dust removal filter of the present invention, and FIG. 2 is an exploded perspective view thereof. In the dust removal filter of this aspect, a foreign matter suction prevention net 3, a filter material 4, and a filter support net 5 are laminated and sandwiched by a dome-shaped jig 1 and an intake port mounting jig 2. The air sucked by the blower removes larger foreign matter in the foreign matter suction prevention net, and dust is removed by the filter material, and is sent to the inside of the air column of the air-expandable tent as clean air.
In the present invention, the material for the foreign matter suction prevention net is not particularly limited, and examples thereof include a metal net, a plastic net, and a synthetic fiber net. The foreign matter to be removed by the foreign matter suction prevention net is a piece of paper, plastic film waste, leaves, etc. The opening of the foreign matter suction prevention network is preferably 1 to 7 mm, and more preferably 1.5 to 4 mm. Since the operation of the blower is within 5 minutes at a time, the foreign matter on the foreign matter suction prevention net can be removed by hand while the blower is stopped.

In the present invention, the form of the filter material is not particularly limited, and examples thereof include woven fabrics such as twill weave and satin weave, needle felts, nonwoven fabrics, and random aggregates of short fibers. There is no restriction | limiting in particular in the material of a filter material, For example, glass fiber, an acrylic fiber, polyester, polyamide, a polypropylene etc. can be mentioned. Among these, polyester can be preferably used because it is excellent in strength and dimensional stability. A filter material can select thickness, a fine structure, etc. according to the generation condition of the dust in the environment which uses an air blower. If necessary, an electret filter can be used to increase the collection efficiency of fine particles without increasing the pressure loss.
The opening and thickness of the filter material can be appropriately selected according to the dust conditions at the site where the blower is used, and can be attached to the dust removal filter. Usually, the opening is 60 to 150 μm and the thickness is 5 to 5. It is preferably 40 mm, more preferably 80 to 120 μm and a thickness of 10 to 30 mm. By making the aperture of the filter material 60 to 150 μm and the thickness 5 to 40 mm, the air loss is not impaired, the pressure loss when the blower is operated at the maximum air flow is kept low, and the dust inside the blower Can be prevented from entering. Since the contamination of the filter material can be visually determined from the appearance, when necessary, the filter material can be replaced by removing the dome-shaped jig from the intake port mounting jig.

In the present invention, the filter support net is not particularly limited, but is preferably a stainless steel net in order to prevent the generation of rust and to provide durability. There are no particular restrictions on the weaving method of the mesh, and examples include plain weave, twill weave, plain tatami mat, twill mat weave, crimp weave, rock crimp weave, flat top weave, ton cap weave, and tie rod weave. The wire diameter and aperture of the filter support net can be selected as appropriate so that the filter material can withstand the wind pressure of the blower and can support the filter material. Usually, the wire diameter is 0.4 to 1.6 mm. It is preferably 0.5 to 5 mm, more preferably a wire diameter of 0.5 to 1.2 mm and an opening of 1 to 3 mm.
In the dust removal filter of the present invention, the laminated foreign matter suction prevention net, the filter material, and the filter support net are sandwiched between the dome-shaped jig and the air inlet mounting jig. There is no particular limitation on the method for sandwiching the laminated foreign matter suction prevention net, filter material, and filter support net. For example, the dome-shaped jig and the inlet mounting jig are threaded and the dome-shaped jig and the inlet mounting jig are fixed. By screwing the tools, the foreign matter suction prevention net, the filter material and the filter support net can be clamped, or the dome-shaped jig and the inlet mounting jig are provided with a meshing clutch so that the dome-shaped jig By engaging the mouth mounting jig, the foreign matter suction prevention net, the filter material, and the filter support net can be clamped.

In the dust removal filter of the present invention, the material of the dome-shaped jig is not particularly limited, but stainless steel having high rigidity and no rust can be suitably used. As shown in FIGS. 1 and 2, the dome-shaped jig preferably has a shape approximately half of a spheroid. The dome-shaped jig has an intake window 6 on its side surface. When the diameter of the joint between the dome-shaped jig and the intake port mounting jig is 75 mm, the size of the intake window is preferably 60 to 80 mm in width and 40 to 60 mm in height. By setting the size of the intake window to a width of 60 to 80 mm and a height of 40 to 60 mm, air can be sucked with a sufficient margin, and there is no possibility of causing pressure loss in the intake window.
In principle, the dust removal filter of the present invention is used with the intake window facing upward, except during rainfall and snowfall. By using the air intake window facing upward, there is no risk of the dust being wound up and sucked from the ground surface by the air intake of the blower. Also, even if the place where the blower is installed is not exposed ground, the density of dust in the atmosphere increases as the air gets closer to the ground surface. The amount of dust sucked into the inside can be reduced.
Depending on the region and season, dust may be sent to the wind and fly from a certain direction. In such a case, the dust removal filter of the present invention can be used as a position where the dome-shaped jig is rotated to direct the intake window to the side and the intake window is directed to the leeward side. By directing the intake window to the lee, the amount of dust sucked into the blower can be reduced.

The dust removal filter of the present invention is used with the intake window facing downward during rainfall or snowfall. When the filter material gets wet, the ventilation resistance increases and the pressure loss increases, but by keeping the air intake window downward and preventing intrusion of rain and snow, the filter material is kept dry and the pressure loss due to the filter material is reduced. An increase can be prevented. In addition, when rainwater enters through the air intake window, rainwater is sent to the inside of the air column of the inflatable tent together with air supply, and it is difficult to completely drain the water that has entered the air column once. This may cause an increase in heat and heat and humidity. The dust removal filter of the present invention can prevent rainwater from entering the inside of the air column of the tent by using the intake window facing downward when it is raining or snowing. Since no dust is generated during rainfall or snowfall, dust is not sucked into the blower even if the intake window is directed downward.
It is preferable that the dome-shaped jig of the dust removal filter of the present invention can be stabilized in a state where the intake window is directed upward, on either side, or downward. When a screw is cut between the dome-shaped jig and the inlet mounting jig and the dome-shaped jig and the inlet mounting jig are screwed together, the dome-shaped jig is rotated 360 degrees using the elasticity of the filter material. The pitch of the screw can be selected so as to be stably fixed within the range to be performed. When a meshing clutch is provided between the dome-shaped jig and the intake port mounting jig, and the dome-shaped jig and the intake port mounting jig are meshed, the dome-shaped jig and the intake port are mounted at four positions 90 degrees apart. A meshing clutch can be provided so that the jig meshes.

In the dust removal filter of the present invention, the material of the intake port mounting jig is not particularly limited, but stainless steel that has high rigidity and does not generate rust can be suitably used. The intake port mounting jig has a screw, a meshing clutch, and the like for joining to the dome-shaped jig on one side, and means for joining to the air inlet of the blower on the other side. There is no particular limitation on the means for joining the intake port attachment jig to the air intake port of the blower, but a screw-in type in which screws are cut into the intake port attachment jig and the air intake port of the air blower is preferable. By providing a screw-type joining means, the dust removing filter can be easily attached to the blower by hand and removed from the blower. When the use of the inflatable tent is finished, attach the air inlet of the blower to the tent side and exhaust the air inside the tent air column.
The dust removal filter of the present invention can be easily attached to a conventionally used blower by processing a screw or the like that fits the intake port attachment jig of the dust removal filter at the intake port of the blower. Therefore, the trouble of the existing blower used while dealing with the trouble due to the inhalation of dust and water can be solved at a stretch. Therefore, it is possible to simplify maintenance management such as disassembly and cleaning that has been performed every time before use, and periodic inspections, and repairs due to failures such as seizing are almost unnecessary. Since the dust removal filter of the present invention has a simple structure and occupies a small volume, it can be stored in a storage device of a blower that has been conventionally used without any trouble.

  The dust removal filter of the present invention effectively removes dust in the intake air, prevents intrusion of rainwater, and can cope with changes in weather conditions and changes in wind direction. By attaching the dust removal filter of the present invention to the air inlet of the blower of the air-expandable tent, maintenance management of the blower can be facilitated, and the occurrence of failure of the blower can be prevented.

It is a perspective view of one mode of the dust removal filter of the present invention. It is a disassembled perspective view of the dust removal filter shown in FIG. It is a perspective view which shows the state which extended the air expansion type tent, its top view, a side view, and an example of a front view. It is explanatory drawing which shows an example of the use condition of an air blower.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dome shape jig | tool 2 Air inlet attachment jig | tool 3 Foreign material suction prevention net | network 4 Filter material 5 Filter support net | network 6 Air intake window 7 Generator 8 Blower 9 Air supply port 10 Hose 11 Distribution pipe 12 Hose 13 Air supply port 14 Air column

Claims (1)

  A dust removal filter attached to the air inlet of a blower of an air expansion tent. The dome-shaped jig and the air inlet mounting jig sandwich the foreign matter suction prevention net, the filter material and the filter support net, and the dome-shaped jig A dust removing filter having an intake window on a side surface and rotatable about an intake direction as an axis.

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