JP2014147895A - Floating dust removal system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently remove dust floating in a work space, even when dust-generating work such as disassembling work is executed in a wide space.SOLUTION: The floating dust removal device 1 for forming an inflow port 3 for making floating dust-including air flow in and an outflow port 5 for making dust-removed clean air flow out by a filter body 2a in a front part 1a, is formed for flowing out in the horizontal direction by increasing a speed of an outflow speed from the outflow port more than an inflow speed to the inflow port by setting the opening area of the outflow port smaller than the opening area of the inflow port, and a pair of floating dust removal devices are arranged so that mutual front faces are mutually opposed by maintaining a distance for colliding mutual speed-increased outflow air, and a series of air circulation flow passage is formed for flowing in the inflow port by descending toward the respective inflow ports after colliding the mutual outflow air from the outflow port.

Description

  The present invention is a work site for disassembling and separating electrical appliances, etc., for removing suspended dust that is released into the air by these dismantling and separating operations and floating on the work site, thereby making the work site a clean space. The present invention relates to the technical field of suspended dust removal systems.

  In general, a large amount of dust is prevalent in large work spaces such as work sites for dismantling used electrical appliances, work sites for destructive crushing and separation of building waste, and foundries and steel works. ing. In addition, fine dust among these dusts becomes floating dust floating in the air as it is, and stays at the work site and causes a deterioration of the work environment. In order to improve the environment at such a work site, there is provided a dust removing device that sucks air containing airborne dust, attaches the airborne dust contained in the filter to the filter, and returns clean air after passing through the filter to the work site. (For example, refer to Patent Document 1). This system uses a wind fan provided at the top of the dust removal device to draw air in the work space from the air inlet on the side of the device and passes it through multiple filters in the device to remove the dust. It is comprised so that air may flow out from an outflow port.

Japanese Patent No. 4810116

  By the way, in such a dust removing device, when the place where the device is installed is a relatively narrow closed space, the air in the workplace is caused to flow from the inlet by the wind of the wind fan. An air flow path that flows in and flows out from the outlet through the filter is formed inside the device. The circulating air flow that flows into the inlet is formed, and the suspended dust is efficiently removed. However, the place where the dust removing device is installed is, for example, a space with a high ceiling and a large work space. In such a case, the air that flows out from the outlet of the dust removal device rises toward the ceiling and forms an air flow that stays near the ceiling or circulates only near the ceiling. There Outflow air has occurred a situation that the circulating air flow is less likely to be formed that is sucked in due course inlet went sequentially lowered toward the inlet of the dust removing device. In such a situation, even if the dust removal device is activated, only the air near the inlet is sucked in, and it becomes difficult for the dust floating in the entire work area to move to the inlet sequentially. There has been a problem that the dust floating in the entire space cannot be removed efficiently.

The present invention has been made in view of the above circumstances and has been created for the purpose of solving these problems, and relates to a floating dust removal system for improving a dust environment in a large work space. The invention includes an inflow port through which air containing airborne dust flows in, a filter that removes and purifies airborne dust contained in the inflowed air, an outflow port through which the purified air flows out, and an inflow port In constructing a floating dust removal system by arranging a plurality of floating dust removal devices provided with a wind-up fan that winds inflowing air out of the outlet through a filter, the inlet of the dust removal device is Air flows in from the front, and the outlet has an opening area of the outlet that is smaller than the opening area of the inlet and increases the outflow speed more than the inflow speed. The accelerated air flows out from the front side in the horizontal direction on the upper side of the inflow port, and at least one pair of the floating dust removing devices maintains the distance at which the accelerated outflow air collides with each other. Are arranged opposite to each other, an air flow toward the inlet is formed below the air flow of the accelerated outflow air, and the negative pressure is caused by the air flowing toward the inlet. A floating dust removing system is configured such that a series of air circulation channels are formed by compensating the colliding air as an air flow directed downward.
According to a second aspect of the present invention, the outflow port is formed in an elongated slit shape that is long in the horizontal direction and short in the vertical direction, and the outflow air is a horizontal air curtain. System.
The invention according to claim 3 is the floating dust removal system according to claim 1 or 2, wherein the outlet is provided so as to extend in a horizontal direction with respect to the inlet.
The invention according to claim 4 is the floating dust removal system according to any one of claims 1 to 3, wherein a plurality of opposed pairs of the floating dust removal devices are arranged in parallel.
The invention of claim 5 is the floating dust removal system according to any one of claims 1 to 3, wherein the floating dust removal devices are arranged diagonally with a predetermined angle.
The invention according to claim 6 is characterized in that the series of air circulation passages are provided with a mist water discharge device for discharging mist water. It is a dust removal system.
A seventh aspect of the present invention is the suspended dust removal system according to any one of the first to sixth aspects, wherein an air temperature adjusting device is provided in the series of air circulation channels.

According to the first aspect of the present invention, air purified by removing suspended dust from the air flowing in from the inlet flows out from the outlet, but the outlet has a smaller opening area than the inlet. And since clean air will flow out in a jet airflow state accelerated in the direction opposite to the inflow direction of the inflow port above the inflow port, while colliding with each other on the tip side in a virtual ceiling state, Below this virtual ceiling, a series of air circulations in which air containing suspended dust flows into an inflow port having a wide opening area, resulting in a negative pressure state, so that the collided air descends. A flow path is formed, and the floating dust generated in the air circulation flow path efficiently flows on the air flow path from the inlet of the floating dust removing device. Therefore, suspended dust generated during work can be efficiently removed even in a wide work space with a high ceiling, and the work environment can be improved.
According to the second aspect of the present invention, the outflow air generated from the outflow port becomes a horizontal air curtain, and the floating dust on the work site does not easily rise upward beyond this, and more floating Dust flows into the air flow path to the inlet, so that the suspended dust can be efficiently removed.
According to the third aspect of the present invention, the accelerated air flow flowing out from the outlet becomes an outflow from a position extending with respect to the inlet, and as a result, is mixed with the inflowing air and disturbs the air circulation flow. Therefore, it is possible to generate a more stable air circulation flow.
By setting it as invention of Claim 4 or 5, even if the workplace area of the operation | work which generates floating dust is huge, removal of floating dust can be performed efficiently.
With the invention of claim 6, since the water that has become fogged captures suspended dust, the suspended dust removal efficiency in the filter is improved, the generation of static electricity is suppressed, and A comfortable working environment where a refreshing feeling can be felt can be achieved.
According to the invention of claim 7, the temperature-controlled air is efficiently circulated through the work space together with the air circulation flow path generated by the suspended dust removing device, and the suspended dust is removed and comfortable. The working space can be adjusted to the temperature.

It is a perspective view of a floating dust removal apparatus. It is a partial cross section side view of a floating dust removal apparatus. It is a side view which shows the flow of the air between a pair of floating dust removal apparatus arrange | positioned facing. It is an effect | action figure which shows the flow of the air between a pair of floating dust removal apparatuses opposingly arranged in the working space with a high ceiling. It is a perspective view which shows a mode that three pairs of floating dust removal apparatuses were opposingly arranged in parallel. It is a perspective view which shows a mode that two pairs of floating dust removal apparatuses are opposingly arranged diagonally. (A), (B) is the top view and side view which respectively show the flow of mist water when a mist ejection apparatus is installed in a floating dust removal apparatus.

  Next, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a floating dust removing device which is disposed in a large working space. The floating dust removing device 1 has a rectangular shape, and dust is removed inside to purify the air. A filter chamber 2 for storing a filter body 2a is provided. An inflow port 3 through which air flows is formed in the front portion 1 a of the floating dust removing device 1, and a duct 4 through which air purified in the filter chamber 2 passes is provided above the filter chamber 2. At the downstream end of the duct 4, an outlet 5 through which purified air flows out is located above the inlet 3 of the front portion 1a.

  A plurality of pre-filters 6 each composed of a metal filter 6a and a rectangular lattice frame 6b are attached to the inflow port 3 so as to cover the inflow port 3 in parallel. The metal filter 6a is formed of, for example, a wire mesh or punching metal, and the periphery is held by the lattice frame 6b. The lattice frame 6b has a shape corresponding to the inlet 3 and is detachably attached to the inlet 3.

The outlet 5 is formed so that the opening area is smaller than the opening area of the inlet 3, so that the outflow speed of the air flowing out is higher than the inflow speed of the air flowing in at the inlet 3. It has become. Moreover, in embodiment of this invention, the outflow port 5 is formed in the state extended from the front part 1a of the apparatus 1 in the horizontal direction (projection).
A plurality of horizontal plate-like horizontal louvers 5a arranged in a stacked manner with a space in the vertical direction are attached to the outlet 5 and the outlet 5 is elongated in the horizontal direction in the vertical direction by the louvers 5a. It is a short and narrow slit. As a result, the air flowing out from the outlet 5 becomes a jet stream in the horizontal direction from the front portion 1a of the suspended dust removing apparatus 1 and flows out at a high speed, thereby forming a horizontal plane on the upper side of the work site. The air curtain E is generated, so that the air in the workplace is difficult to rise above the air curtain E, and the air flowing out from the outflow port reaches far away in the horizontal direction.
In addition, a vertical plate-like vertical louver 5b is disposed behind the louver 5a in the horizontal direction with an interval therebetween, so that the air flowing out from the outlet 5 can be adjusted in the horizontal direction. It can be done.
In addition, the outflow port 5 is configured so that air flows out from a position higher than the head of the worker who is working, so that the air outflowing from the outflow port 5 directly hits the operator. There is no such thing.
A wind-up fan 7 is disposed on the upper portion of the filter chamber 2, and air is sucked into the filter chamber 2 through the pre-filter 6 by the operation of the wind-up fan 7 and passes through the filter chamber 2. The latter air flows out from the outlet 5 through the duct 4 to the outside of the apparatus.
Incidentally, in the embodiment of the present invention, the air volume per unit time (outflow air volume) flowing out from the outlet 5 is stepwise in the range of, for example, 140 to 260 cubic meters per minute (m ³ / min). It can be adjusted. Such air volume adjustment can be arbitrarily set by an air volume adjustment switch (not shown) such as an operation button or an operation dial. The air volume adjustment switch can be set according to the installation status of the floating dust removing device 1 or the amount of floating dust in the work space. It can be set accordingly. The air volume adjusting switch is turned off, stopped, and the stepwise air volume adjusting positions are set, and can be set at these positions as required. By the way, when this air volume adjustment switch is set to the “pause” position (for example, set at a rest time), the inverter is controlled so that air flows in from the inlet 3 with a weak air volume set in advance. In this state, dust is shaken off from the main filter 2a by a vibration bar 8 described later. The amount of air flowing in by the inverter control is adjusted so that the dust that has been shaken off does not flow backward from the inflow port 3 and leak into the work space S, but falls into the pallet 12 described later. Yes.

  In the filter chamber 2, a plurality of mat-type main filters 2 a are arranged in a vertically arranged state with a space therebetween. The main filter 2a is formed in a rectangular hollow shape in which a filter cloth made of a filter material for filtration is closed at the bottom, thereby forming a bag shape that opens on the downstream side of the flow path (upper side in FIG. 2). A plurality of filter main bodies 2b (in this embodiment, five are in one set as will be described later) are attached in a state of being connected in parallel (stripes) with appropriate intervals. . In the filter chamber 2, dust-containing air that has flowed in through the pre-filter 6 passes through the bag-like filter body 2 b from the outside to the inside, and the dust-removed air flows through the duct 4. From the outlet 5, it flows out in the work place as clean air.

  A shape holding material 2c is incorporated into a rectangular hollow portion formed by the filter main body 2b in a loaded form. The shape-retaining material 2c is a three-dimensionally bonded or entangled highly elastic fiber that is curled in a three-dimensional manner with a large space ratio and a larger air permeability than the filter body 2b. Since the filter body 2b is flexible and has a shape retaining function, the filter body 2b is set so as not to be crushed even if it receives air resistance due to the wind generated by the wind fan 7. ing. The shape-retaining material 2c is configured to be inserted into the filter main body 2b by being inserted from the opening on the downstream side of the flow path of the filter main body 2b and brought into contact with the bottom of the filter main body 2b. Inside, that is, air after passing through the filter main body 2b is inserted and incorporated so as to pass through the shape retaining member 2c.

  The main filter 2a is formed as a set of five filter bodies 2b, and a flange 2e extending in the horizontal direction is provided at the peripheral edge of the filter body 2b on the opening 2d side. . In the main filter 2a, the upper support piece 2g is detachably mounted on the upper side of the lower support piece 2f in a state where the flange portion 2e is placed on the lower support piece 2f provided on the inner surface of the filter chamber 2. However, it is sandwiched and assembled by tightening with the clamp 2h. An opening is formed in the ceiling plate 2 i of the filter chamber 2, and the wind fan 7 is disposed in the opening, and the air cleaned by the main filter 2 a is supplied to the outlet 5. ing.

  Reference numeral 8 denotes a vibrating bar, which is disposed between the filter main bodies 2a and shakes off dust adhering to the main filter 2a by vibration operation. For example, the vibrating body 9 to which the vibrating rod 8 is connected can be vibrated by returning the rotational drive of the motor 10 to linear movement by the crank mechanism 11, and the dust shaken off by such vibration is the dust. It is dropped and accumulated on a pull-out pallet 12 provided at the lower end of the removing device 1.

  As shown in FIG. 3, the suspended dust removing devices 1 a and 1 b, which are a pair of the suspended dust removing device 1 configured as described above, are arranged in a horizontal direction from each other outlet 5 in the work space S where dismantling work or the like is performed. Are arranged so as to face each other within a distance in which the accelerated air flowing out from the vehicle collides with each other. And when the wind-up fan 7 of each floating dust removal apparatus 1a, 1b is operated in the state of being opposed to each other in this manner, the increased air flowing out from the respective outlets 5 of the floating dust removal apparatuses 1a, 1b Will collide at the midpoint of the outlet 5. On the other hand, at the respective inlets 3 of the floating dust removing apparatuses 1a and 1b, the air near the inlets flows into the inlets 3, respectively, and the vicinity of the inlets 3 is in a negative pressure state. The colliding air flows to compensate for the negative pressure and descends as a downward air flow in the direction of the inlet 3, and flows into the inlet 3 near the inlet 3. The air that flows in in this way passes through the filter chamber 2 and then flows out again as air that has been accelerated from the outlet 5, and in this way, the work space S includes the work space S And a series of air circulation channels that circulate between the dust removing devices 1a and 1b.

  In the present embodiment configured as described above, the dust in the air containing dust particles flowing in from the inlet 3 by the wind-up operation of the wind-up fan 7 passes through the main filter 2a of the filter chamber 2 when the filter main body 2a passes through the main filter 2a. The clean air after adhering to 2b and after the dust is removed flows out from the outlet 5 through the duct 4, and the air containing the dust in the working space S is purified. By arranging the dust removing devices 1a and 1b so that the air flowing out from the respective outlets 5 is opposed to each other within a distance where the air flows out, the air flowing out from the outlet 5 flows into the inlet 3 in the horizontal direction. After the air flow rate is increased and flowed out, it collides at an intermediate position between the outlets 5 and then descends as a downward air flow due to the negative pressure state near the inlet 3. It continues to flow into the inlet 3, after the dust has been removed by the filter chamber 2, and flows out from the outlet 5 again. In this way, the air containing the suspended dust in the working space S is efficiently purified by forming a series of air circulation channels that circulate between the working space S and the suspended dust removing devices 1a and 1b. .

  As described above, the floating dust removing devices 1a and 1b are arranged so as to face each other within a distance in which the air flowing out from the outlet 5 collides with each other, so that the floating dust removing devices 1a and 1b can be separated from the outlets 5 on the upper front side. As shown in FIG. 4, the operation of generating dust to form an air circulation flow path in which the clean air that flows out descends after flowing out in the horizontal direction and then flows in from the inlet 3 on the lower front side. Even if it is performed in the facility C with a high ceiling, the outflow air from which the clean air flows out from the outlet 5 becomes a horizontal air curtain E, and the floating dust on the work site is above the virtual ceiling H above the outflow air. Becomes difficult to rise, and an efficient air circulation passage in the work space S is formed. Therefore, the suspended dust in the work space S can be efficiently removed, and the air in the work space can be efficiently purified.

  And in this thing, since the virtual ceiling H is formed, there is no air circulation or a slight stagnation state at a part higher than the virtual ceiling H, so the amount of air to circulate substantially (circulation air volume) Is not the volume of the entire space in the facility C up to the ceiling including the work space S, but may be a volume equal to or less than the virtual ceiling H. As a result, the number of air circulations per unit time (= 60 × For example, it is possible to reduce the air flow rate / circulation air flow rate) to 20 times / 1 hour (air circulates once every 3 minutes) with as little air flow as possible. . In addition, in this case, air purification in the work space S is performed by circulating air in the work space S without introducing outside air, so there was a temperature difference between the work space S and the outdoors. Sometimes there is no need to adjust the room temperature associated with the introduction of outside air, and this also has the advantage that the air conditioning efficiency is increased.

  In the embodiment of the present invention, the dust removing device 1 is configured so that a pair of 1a and 1b face each other. However, the present invention is not limited to this, and the dust removing device 1 is shown in FIG. As described above, a plurality of pairs (three pairs in the present embodiment) 1a to 1f may be arranged to face each other in parallel, and as shown in FIG. 6, two pairs of dust removing devices 1a, 1b, 1c, and 1d Can be implemented by opposingly arranging diagonally at a predetermined angle (90 degrees in this embodiment). In this way, a plurality of floating dust removing devices may be appropriately arranged so as to face each other according to the arrangement of the work table and the arrangement of the workers at the work site, and in this way according to the situation at the work site. By arranging it, a more efficient suspended dust removal system can be obtained.

  Furthermore, as shown in FIG. 7, in a series of air circulation channels from the outlet 5 to the inlet 3, a spray water discharge device (mist injection device) 13 for spraying water in a mist state is installed. The circulating air may contain mist water. By doing so, floating dust aggregates in the spray water, and this is captured by the filter, so that dust removal is performed more efficiently. At the same time, the working space can be given a suitable humidity, the generation of static electricity can be suppressed, and the working space can be felt cool.

  Furthermore, an air temperature adjusting device (air conditioner) may be installed in a series of air circulation passages from the outlet 5 to the inlet 3 to adjust the temperature of the circulating air. By adopting a simple configuration, it is possible to provide a work space in which dust removal is performed and temperature adjustment is also efficiently performed. The air temperature adjusting device may be implemented using a well-known technique, and may be a working space provided with the above-described mist ejection device.

  The present invention removes suspended dust that is released into the air by the dismantling and separation work and floats on the work site at the work site such as dismantling and separation work of electrical appliances, etc., and makes the work site a clean space It can be used in the technical field of suspended dust removal systems.

DESCRIPTION OF SYMBOLS 1 Airborne dust removal apparatus 1a Front part 2a Main filter 3 Inlet 5 Outlet 7 Fan

Claims (7)

An inflow port through which air containing airborne dust flows in, a filter that removes and purifies airborne dust contained in the inflowed air, an outflow port through which the purified air flows out, and air that flows in from the inflow port In constructing a floating dust removal system by arranging a plurality of floating dust removal devices provided with a wind-up fan that winds out from the outlet through a filter,
The inlet of the dust removal device is for injecting air from the front,
The outlet has an opening area that is smaller than the opening area of the inlet and increases the outflow speed more than the inflow speed. It flows out in the horizontal direction,
At least a pair of the suspended dust removing devices are arranged such that the front surfaces are opposed to each other while maintaining a distance where the accelerated outflow airs collide with each other, and under the airflow of the increased outflow air, A series of air circulation channels is formed by compensating for the air flow toward the inflow port, and the air colliding with the air flow toward the lower side by compensating for the negative pressure due to the air flowing toward the inflow port. A suspended dust removal system characterized by being configured to be formed.   2. The floating dust removing system according to claim 1, wherein the outlet is formed in an elongated slit shape that is long in the horizontal direction and short in the vertical direction, and the outflow air is a horizontal air curtain.   The floating dust removal system according to claim 1 or 2, wherein the outlet is provided so as to extend in a horizontal direction with respect to the inlet.   The floating dust removal system according to any one of claims 1 to 3, wherein a plurality of pairs of the floating dust removal devices facing each other are arranged in parallel.   The floating dust removing system according to any one of claims 1 to 3, wherein the floating dust removing devices are arranged diagonally at a predetermined angle.   The suspended dust removal system according to any one of claims 1 to 5, wherein a series of air circulation channels is provided with a mist water discharge device for discharging mist water.   The suspended dust removal system according to any one of claims 1 to 6, wherein an air temperature adjusting device is provided in the series of air circulation channels.

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