JP3248076B2 - Dust treatment method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is, for example, implemented in such a manner that dust in a building structure is sucked through a permanent suction pipe, the dust is lowered by its own weight in an air inflow chamber, and collected in a dust bag. And a dust processing method.

[0002]

2. Description of the Related Art After dust is sucked into an air inflow chamber from the outside thereof together with air, the dust is lowered by its own weight toward an opening at the lower part of the air inflow chamber, and the air is discharged out of the air inflow chamber. A dust collecting space device, and a dust box detachably connected to the opening, wherein a dust receiving bag is mounted in the internal space of the dust box to receive dust falling from the opening. Dust treatment equipment does exist.

In this type of apparatus, a negative pressure is applied to the air inflow chamber at the start of operation. At this time, the negative pressure acts on the inside of the dust bag through the opening. Can be sucked into the internal space of the air inflow chamber through the opening, and the dust bag can be broken by the force of the sucking. In order to prevent this, conventionally, for example, Japanese Patent Publication No. 2-37235. As shown in the official gazette, forming an air suction pipe for communicating the air suction unit formed outside the dust collecting space device and the dust box,
Before a negative pressure is applied to the air inflow chamber, a negative pressure is applied to the outer surface of the dust bag through this suction pipe, and when a negative pressure is applied to the air inflow chamber, the inner surface of the dust bag is applied. The suction force due to the negative pressure acting on the outer surface is balanced by the suction force due to the negative pressure applied to the outer surface thereof.

[0004]

In the above-mentioned dust processing apparatus, since the air suction pipe extending from the air suction section existing outside the dust collecting space apparatus to the dust box is provided, the size of the apparatus becomes large. When the dust bag is separated from the opening at the lower part of the air inflow chamber and the dust bag inside is taken out, the residual dust in the air inflow chamber may fall through the opening and be scattered outside the dust bag.

The present invention has been made in view of the above-mentioned circumstances, and makes it possible to reduce the size of the apparatus by eliminating the need for the above-mentioned air suction pipe, and to remove the dust in the air inflow chamber when removing the dust bag from the dust box. The object of the present invention is to prevent the device from falling through the opening and to make it easy to use.

[0006]

According to a second aspect of the present invention, in order to attain the above object, dust is sucked into an air inflow chamber together with air from outside the air inflow chamber. A dust collecting space device, which is configured to lower the dust by its own weight toward the opening at the lower portion of the air inflow chamber, and a dust box detachably connected to the opening, and falls from the opening into the internal space of the dust box. In a dust processing apparatus having a structure in which a dust bag is attached to receive dust, an inner space of the air inflow chamber and a portion of the inner space of the dust box which is on the outer side of the dust bag. And an opening and closing means for opening and closing the opening.

In the use of this dust processing apparatus, as described in claim 1, when dust is collected in the dust bag, the opening and closing means is opened, while the dust bag is taken out of the dust box. Occasionally, the opening / closing means is closed and the dust box is separated from the opening.

The above-mentioned dust processing apparatus can be embodied as follows. That is, as described in claim 3, the dust box separated from the opening is swung to one side under the condition that the dust box is located at a specific height immediately below the opening, so that the dust box is A lever type attachment / detachment means is provided which is coupled to the opening and which operates so that the dust box is separated from the opening by swinging the operation lever to the other side.

According to a fourth aspect of the present invention, there is provided an opening / closing operation lever for opening and closing the opening, and the opening / closing operation lever and the detachable operation lever are interlocked.

According to a fifth aspect of the present invention, there is provided a generally conical cage detachably mounted at a specific position above the internal space of the dust box, the cage having a diameter larger than the opening at the top. A through-hole is formed, and the upper part of the dust receiving bag accommodated in the dust box is inserted through the through-hole from below to above, and is bent outward from the radius of the through-hole. The configuration is such that the pressure is sandwiched between the opening and the surrounding portion.

According to a sixth aspect of the present invention, between the dust box and the cage, a resilient means for urging the cage upward is provided.

[0012]

FIG. 1 is a front view of a dust processing apparatus according to an embodiment of the present invention, and FIG. 2 is a front view showing the vicinity of a dust box.

In these figures, reference numeral 1 denotes a dust collecting space device in which a plurality of bag filters 2 are mounted in an internal space, 3 denotes a dust box having a circular shape in a plan view mounted on a lower portion of the dust collecting space device 1. Is an exhaust system for discharging air from the dust collecting space device 1, 5 is a dust suction pipe extending from the dust collecting space device 1, and 6 is a building structure provided with the suction tube 4. .

The dust collecting space device 1 has a generally square tube shape in a vertical direction, a lower portion 1a of which is formed in a hopper shape, and a lower end surface of an internal space formed with a circular opening 7 as shown in FIGS. The upper portion of the internal space is formed as an air outflow chamber a in contact with the inner surface of the bag filter 2, and the lower portion is formed as an air inflow chamber b in contact with the outer surface of the bag filter 2.
A plurality of leg members 8 for holding the internal space at a fixed height position are fixed to the outer peripheral wall in an upright manner.

As shown in FIGS. 5 and 6, etc., the dust box 3 has a peripheral surface portion 9 and a bottom surface portion 10 each having a circular shape in plan view. While the cylindrical body 11 having the holes c formed in the form of scattered points is brought into contact with the bottom surface portion 10 and fixed concentrically with the peripheral surface portion 9,
The height of the cylindrical body 11 is not appropriately lower than that of the peripheral surface portion 9, and three spring receivers 12 are provided at an upper portion of the space d between the cylindrical body 11 and the peripheral surface portion 9 at an appropriate circumferential distance. A spring 13 is mounted vertically on each of the spring receivers 12 to form a resilient means, and the entire surface of the spring receiver 12 is supported on the lower surface of the bottom portion 10 so as to be able to travel on a floor surface 14. The supporting ball 15 is mounted so as to roll freely at a predetermined position.

As shown in FIG. 7, a cage 16 having a substantially conical shape and having a through hole e at the top is disposed above the internal space of the dust box 3. The cage 16 is an independent structure that is independently moved and operated, and is a relatively large annular member 17 that is fitted and inserted into the space d between the cylindrical body 11 and the peripheral surface portion 9; A relatively small annular member 18 having a size corresponding to the opening 7 is arranged so that the latter member is located above the former member, and these two annular members 17 and 18 are connected to the rod member 1.
It is assumed that they are connected by 9. At this time, the relatively large annular member 17 is supported by the upper end surfaces of the three springs 13 when the cage 16 is in use, as shown in FIGS.

The exhaust system 4 is provided with a ventilation pipe 2 from the air outflow chamber a.
A high-performance secondary filter 21, an on-off valve 22, and a blower 23 are provided in this order in the middle of the ventilation pipe 20, and the end is connected to an exhaust duct 24. The dust suction pipes 5 are branched so as to be arranged at a number of places in the internal space of the building structure 6, and each branch end is connected with a dust suction hose (not shown) as necessary and closed as necessary. It has been made.

Next, a box attaching / detaching structure 2 for detachably attaching the dust box 3 to the lower portion of the dust collecting space device 1.
5 and an opening and closing means 2 for opening and closing the opening 7
6 will be described.

As shown in FIGS. 3 and 4, the box attaching / detaching structure 25 has a cylindrical member 27 fixed to the opening 7 and a rectangular plate 28 fixed to the lower end of the cylindrical member 27. A stepped rectangular cylinder member 29 covering the outer peripheral surface of the cylindrical member 27 is fixed to the
Is covered with an upper end member 30 and a square tubular member 29
Of the lower end of the cylindrical member 27 on the lower surface of the rectangular plate 28 is formed as an annular contact surface f. The pressing member 31 is fixed, and a packing member 32 made of a rubber plate is fixed to a lower surface portion of the square plate 28 between the annular pressing member 31 and the lower end edge 29 a of the square tube member 29. Is provided with lever type attaching / detaching means 33 which raises or lowers the dust box 3 near the box.

At this time, reference numeral 29b denotes an L-shaped plate which forms most of the left and right side surfaces of the rectangular tube member 29, has a vertical surface portion g1 and a horizontal surface portion g2, and is provided at the outer end of the horizontal surface portion g2. The edge h, which forms the lower edge 29a, is formed downward.

The lever type attachment / detachment means 33 includes left and right L-shaped plates 2.
Hook-shaped bearing plates 34, 34 are fixed to the central outer surface of 9b as shown in FIG. 2 and the like.
5 is rotatably mounted, and cylindrical members 36, 36 are extrapolated to left and right ends of the fulcrum shaft 35, and a detachable operating lever 37 is fixed to each cylindrical member 36 toward the front side. As shown in FIG. 8, one end of a link member 38 shaped like a side view is axially attached to a position near the fulcrum shaft 35 of the 37, and the upper end of a clamp 39 having a hook 39 a is attached to the other end of the link member 38. On the other hand, a projection 40 for hooking the hook 39a of the clamp 39 is formed at a corresponding position on the peripheral surface 9 of the dust box 3, and the left and right detaching operation levers 37, 37 are provided between the front ends thereof. It is configured to be connected by the operation connecting rod 41.

As shown in FIGS. 3 and 4, the opening / closing means 26 forms a packing groove on the inner surface of the cylindrical member 27 along the length thereof and fits a ring packing 42 into the groove. The disc-shaped valve body 43 is fixed, and the open / close operation levers 44, 44 are fixed to the left and right ends of the fulcrum shaft 35. By swinging the operation lever 44, the valve body 43 swings around the fulcrum shaft 35. 9 and FIG. 10 to form a closed state inside the cylindrical member 27, or to form a vertical state as shown in FIG. 3 to form this open state. I have. The opening / closing operation lever 44 may be provided on only one side.

Each of the opening / closing operation levers 44 is linked to its corresponding detaching / wearing operation lever 37.
As shown in FIGS. 4 and 8, a locking member 45 is fixed in the middle of the length of each detachable operation lever 37, and
Is pivoted upward, the corresponding opening / closing operation lever 44 is locked by the locking member 45 so that the detachable operation lever 3
7, the opening / closing operation lever 44 is kept stationary when the detachable operation lever 37 is swung downward.

Further, the lower portion of the air inflow chamber b and the peripheral portion of the internal space of the dust box 3 communicate with each other through a communication passage 46. Through holes i
And a part of the square plate 28 is
A through hole j is also formed at a position between the lower edge portion and the annular pressing member 31, and the through hole i, j and the internal space of the square tubular member 29 are formed as a communication passage 46, and a lower portion of the air inflow chamber b is formed. And the periphery of the internal space of the dust box 3 are communicated by the communication passage 46.

In FIG. 3, k is a lower edge 29 of the square tubular member 29.
a notch formed on the front side of a, a cushioning member made of rubber material fixed on the rear inner surface of the lower end edge 29a, a handle member fixed on the front side of the peripheral surface portion 9 of the dust box 3, and 48;
Is a dust bag made of a soft synthetic resin material.

Next, an example of use of the above-described dust processing apparatus and an example of its operation will be described. First, the dust bag 48 is mounted in the dust box 3. For this reason, the cage 16 is taken out under the state shown in FIGS. 5 and 6 in which the dust box 3 is separated from the lower part of the dust collecting space device 1, and then the dust receiving bag 48 is positioned inside the cylindrical body 11. Then, the cage 16 is placed on the upper end surface of the spring 13 such that the relatively large annular member 17 is located between the cylindrical body 11 and the peripheral surface portion 9. As shown in FIG. 6, the opening peripheral portion 48a of the dust bag 48 is inserted through the through hole e of the relatively small annular member 18 from below to above, and then expanded outward to be folded obliquely downward. . In this state, the relatively small annular member 18 is slightly higher than the upper end of the peripheral surface 9 of the dust box 3.

Next, the dust box 3 is moved to the vicinity of the front side of the dust collecting space device 1 by pushing and pulling the dust box 3 with the handle member 47, and the front and rear directions thereof are adapted to the dust collecting space device 1. Thereafter, the rectangular space member 29 is pushed directly below the dust collecting space device 1 through the cutout portion k of the lower edge 29a. At this time, since the upper edge of the peripheral surface 9 of the dust box 3 is slightly higher than the lowermost position of the lower edge of the square tubular member 29, the upper edge of the peripheral surface 9 of the dust box 3 is as shown in FIG. Then, the dust box 3 comes into contact with the cushioning member m at the rear part of the square tubular member 29, so that the dust box 3 is located immediately below the opening 7 of the dust collecting space device 1 without any troublesome positioning and without impact. Each protrusion 40 provided on the peripheral surface 9 of the dust box 3 matches the height of the hook 39a of the clamp 39 when the detachable operation lever 37 is in the state of FIG. Is also located slightly above.

Next, as shown in FIG.
The hook portion 39a is hooked to the protruding portion 40, and under this condition, the detachment operation levers 37 are operated to swing downward by holding the operation connecting member 41 or the like. As a result, the hook portion 39a is hooked on the projection portion 40 without any manual operation due to its own weight, and subsequently lifts the dust box 3 with a small force by the boosting action of the lever type attaching / detaching means 33, while the opening / closing operation lever 44 is slid. Since the state shown in FIG. 11 is maintained without interlocking with the detaching operation lever 37 due to the resistance of the contact portion, the opening 7 is maintained in the closed state by the valve body 43 in the horizontal posture shown in FIG.

When the detachable operation levers 37 are pivoted to the position shown in FIG.
The upper end edge of the peripheral surface portion 9 is pressed against the packing member 32, and the relatively small annular member 18 of the cage 16 is
8 between the annular contact surface f and the opening edge 4 of the dust bag 48.
8a is pressed downward by the annular contact surface f against the elasticity of the spring 13 with the annular contact surface f interposed therebetween, whereby the internal space of the dust box 3 is shut off from the atmosphere side and The receiving bag 48 is positioned at the specific position shown in FIG. The positions of the detachment operation levers 37 are fixedly held by the positional relationship between the link member 38 and the fulcrum shaft 35 and the action of gravity.

Thereafter, the blower 23 is activated, whereby the air in the internal space of the dust collecting space apparatus 1 is sucked through the ventilation pipe 20, and after passing through the blower 23, is discharged to the atmosphere through the exhaust duct 24. . Due to the exhaust action of the blower 23, the inside of the air inflow chamber b has a negative pressure, and the outer space d of the dust receiving bag 48 in the inner space of the dust box 3 also causes the air inside thereof to flow into the air. Due to the negative pressure of the chamber b, the air is first sucked into the air inflow chamber b through the communication holes 46 formed through the through holes i and j and the space in the rectangular tube member 27, and then discharged to the atmosphere. As a result, the same negative pressure as the negative pressure in the air inflow chamber b is obtained. As a result, the dust receiving bag 48 has the cylindrical body 1 on its outer surface.
A negative pressure is applied through the one through-hole c, and the negative pressure causes the entire inner surface of the cylindrical body 11 to be uniformly sucked.

After the transient state of the negative pressure in the internal space of the dust collecting space device 1 and the internal space of the dust box 3 is completed (for example, approximately 4 to 10 seconds have elapsed since the blower 23 was activated). Rear), the opening / closing operation lever 4 in the state of FIG.
4 is pivoted downward to bring it to the state shown in FIG.

As a result, the valve element 43 is in the vertical position, the opening 7 is in the open state, and the negative pressure in the air suction chamber b extends through the cylindrical member 27 to the inner surface of the dust bag 48.
At this time, since the negative pressure has already acted on the outer surface of the dust bag 48, the dust bag 48 does not peel off from the inner surface of the cylinder 11 and roll up into the cylindrical member 27.

With the opening 7 thus opened, a dust suction hose or the like (not shown) is connected to an arbitrary branch end of the dust suction pipe 5 in the building structure 6, and the hose is opened from the tip opening. Dust is sucked in with the atmosphere. The dust and air sucked in this way flow into the air inflow chamber b through the dust suction pipe 5, where only air passes through the bag filter 2 to reach the air outflow chamber a, and is discharged to the atmosphere via the exhaust system 4, On the other hand, the dust
Or fall in the air inflow chamber b and pass through the opening 7 to reach the inside of the dust bag 48.

If such a dust removing process is performed for a long time, a large amount of dust accumulates on the outer surface of the bag filter 2 and the filter surface is clogged. In this state, the dust removal ability is reduced, and after an appropriate fixed time elapses, for example, by using an air injection device (not shown) for preventing clogging, the inner surface (air outflow chamber a) of the bag filter 2 is moved to the outer surface (air outflow). Compressed air is blown toward the inflow chamber b) to blow off dust accumulated on the outer surface of the bag filter 2 below the air inflow chamber b. At this time, the compressed air injected from the air injection device is discharged from the exhaust system 4 through another bag filter 2, and the bag filter 2 from which the dust has been removed has its dust removing ability recovered again and is excellent. Demonstrate excellent filter performance. Note that the dust collecting space device is not limited to the bag filter dust collecting device, and may be, for example, a cyclone.

When the dust is filled in the dust bag 48 by the above operation, the blower 23 is stopped or the like, and the detachment operation lever 37 in the state shown in FIG. And the state shown in FIG. On this occasion,
The locking member 45 abuts on the opening / closing operation lever 44 to displace the lever 44 in the same manner as the detachment operation lever 37.
As a result, the valve element 43 is in the horizontal position as shown in FIG. 11, and the opening 7 is closed, while the clamp 39 is displaced downward to lower the dust box 3 onto the floor surface 14.

Thereafter, the user holds the handle member 47 and pulls out the dust box 3 to the front of the dust collecting space device 1.
At this time, since the opening 7 is in the closed state, the situation where dust in the air inflow chamber b falls downward through the opening 7 is reliably prevented.

Then, the periphery of the opening 48a of the dust bag 48 in the dust box 3 is sealed with a string or the like, and then the cage 16 is removed. Then, the dust bag 48 is taken out from the inside of the dust box 3. . Thereafter, the dust in the dust bag 48 is discarded together with the dust bag 48. After that, a new dust bag 4
The dust 8 can be removed again, for example, by mounting the cartridge 8 in the dust box 3.

[0038]

According to the present invention, the following effects can be obtained. That is, according to the first or second aspect, more reliably than when an air suction pipe for communicating the air suction unit outside the dust collecting space device with the dust box is provided.
It is possible to prevent the dust bag from rolling up into the internal space of the dust collecting space device, and to make the device compact. Also, when the dust box is separated from the lower part of the dust collecting space device, the opening of the dust collecting space device is closed by the opening and closing means, so that dust remaining in the internal space of the dust collecting space device falls from the opening. Thus, it is possible to reliably prevent the dust bag from scattering outside.

According to the third aspect, the dust box can be easily and quickly coupled to the opening of the dust collecting space device or separated from the opening.

According to the fourth aspect of the present invention, the operation of separating the dust box from the opening of the dust collecting space device allows the opening to be mechanically closed without the need for independent operation of the opening / closing operation lever. It can be operated to be in a state, and the operation is simplified.

According to the fifth aspect, the dust bag can be easily and accurately attached to the dust box. Further, the opening of the dust bag in which dust is accumulated can be closed, and the dust box following the dust box can be closed. The take-out can be performed easily, and the dust does not touch the operator's hand, so that clean work can be performed.

According to the sixth aspect, the peripheral portion of the opening of the dust bag can be air-tightly and stably connected to the opening of the dust collecting space device by the elasticity of the elastic pressure means.

[Brief description of the drawings]

FIG. 1 is a front view showing a todust processing apparatus according to the present invention.

FIG. 2 is a front view showing the vicinity of a dust box of the dust processing apparatus.

FIG. 3 is a side sectional view showing an xx section in FIG. 2;

FIG. 4 is a plan sectional view showing an x1-x1 part of FIG. 3;

FIG. 5 is a plan view of the dust box.

FIG. 6 is a side sectional view of the dust box.

FIG. 7 is a view showing a cage.

FIG. 8 is a right side view of FIG. 2;

FIG. 9 is a view showing a state where an opening is closed in FIG. 3;

FIG. 10 is a view showing a state where an opening is closed in FIG. 4;

FIG. 11 is a view showing a state when the detachable operation lever is swung upward in FIG. 3;

12 is a diagram showing a state when the detachable operation lever is swung upward in FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dust collection space device 3 Dust box 7 Opening 13 Spring (elastic pressure means) 16 Cage 26 Opening / closing means 33 Lever type attaching / detaching means 37 Detachable operating lever 44 Opening / closing operating lever 46 Communication path 48 Dust receiving bag b Air inflow chamber e Through hole

Claims (6)

(57) [Claims] 1. A dust collecting space apparatus in which dust is sucked into an air inflow chamber from the outside thereof together with air and dust that has reached the air inflow chamber is lowered by its own weight toward an opening at a lower portion of the air inflow chamber. A dust box detachably coupled to the opening, wherein a dust receiving bag is accommodated in an inner space of the dust box for receiving dust falling from the opening. The internal space and the part outside the dust receiving bag in the internal space of the dust box communicate with each other through a communication passage, and an opening and closing means for opening and closing the opening is provided. When the dust is collected, the opening and closing means is set to the open state.On the other hand, when the dust bag is taken out of the dust box, the opening and closing means is set to the closed state. A dust box separated from the opening. 2. A dust collecting space apparatus in which dust is sucked together with air from outside of the air inflow chamber and dust that has reached the air inflow chamber is lowered by its own weight toward an opening at a lower portion of the air inflow chamber. And a dust box detachably coupled to the opening, wherein a dust receiving bag is mounted in the internal space of the dust box to receive dust falling from the opening. The internal space of the air inflow chamber and a portion of the internal space of the dust box that is on the outer side of the dust bag are communicated through a communication passage, and an opening and closing means for opening and closing the opening is provided. A dust processing device characterized by the above-mentioned. 3. The dust box is coupled to the opening by swinging the detachable operation lever to one side while the dust box separated from the opening is positioned at a specific height immediately below the opening, and 3. The dust processing apparatus according to claim 2, further comprising a lever type attaching / detaching means which operates so that the dust box is separated from the opening by swinging the operation lever to the other side. 4. The dust processing apparatus according to claim 3, wherein an opening / closing operation lever for opening and closing the opening is provided, and the opening / closing operation lever and the attachment / detachment operation lever are linked. 5. A substantially conical cage removably mounted at a specific position in an upper portion of the interior space of the dust box, the cage having a through hole having a diameter larger than the opening at the top, and having a through hole in the dust box. The upper part of the dust bag accommodated in the through hole is inserted into the through hole from below to above, is bent outward from the radius of the through hole, and is pressed by the peripheral portion of the through hole and the peripheral portion of the opening. The dust processing apparatus according to claim 2, wherein the dust processing apparatus has a configuration. 6. The dust processing apparatus according to claim 5, wherein a resilient means for urging the cage upward is provided between the dust box and the cage.