JP2000042334A - Dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust collector contrived so that both of the relatively coarse dust such as sparks or fume and fine dust may be captured with one device and in a separated state and also safely so that a fire, etc., may not occurred. SOLUTION: The coarse and heavy dust HD such as sparks is revolved by centrifugal force along the outmost periphery of a dust revolving space 3' by revolving the dust-containing gas sent from an intake port in the dust revolving space 3' and recovered at a downward outside dust recovering part 14, and the fine dust passed through an air exhaust hole 4P and introduced at an inside of a cylindrical body 4 is captured with a filter and shaken down with a dust removing device and recovered in an inside and outside dust recovering part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting apparatus suitable for collecting dust having both relatively coarse particles and fine particles. The present invention relates to a dust collector suitable for use in separating and collecting dust such as sparks and fumes generated by laser cutting or fusing work or laser processing.

[0002]

2. Description of the Related Art Since fume dust generated during welding and fusing operations contains sparks, if this fume dust is collected as it is from a source by a dry dust collector, the dust ignited by the sparks There is a danger that the gas will be ignited into the dust collector as a spark, which will burn into the filter and cause a fire.

Therefore, conventionally, a dust collector using a non-combustible filter as disclosed in, for example, Japanese Utility Model Laid-Open No. 5-70616 is installed in the middle of a suction passage for sucking fume dust. By installing a pre-dust box as disclosed in Japanese Patent Application Laid-Open No. 9-52010, the occurrence of a fire was prevented.

[0004]

However, in the case of the dust collecting device described in the former publication, coarse dust containing sparks and fumes and ordinary fine dust are put in the same bucket. Since it is configured to collect fine dust, it is necessary to drop the fine dust into the bucket after the fire is completely extinguished, and there has been some troublesome handling.

[0005] Further, the pre-dust box described in the latter publication is installed in a place different from the dust collector, or in a state where the pre-dust box is held outside the dust collector. Then, once the dust that has turned into sparks is collected in the pre-dust box,
Since fumes and dust without sparks are collected by a dust collector, there is a problem that the structure becomes complicated and the whole apparatus becomes large-sized and expensive.

Therefore, the technical problem of the present invention is that
By providing a dust collector that is designed so that both relatively coarse dust such as sparks and fumes and fine dust are separated from each other, and that they can be collected safely so as not to cause a fire or the like. is there.

[0007]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

[0008] From the dust-containing gas sent into the airframe through the air supply passage where the blower suction or blowing action is exerted, fire powder, hem or other various dusts that cause a fire are separated and captured. A dust collector configured to collect,

(1) A dust swirl space communicating with the air supply passage is provided by an inner and outer double cylinder in the interior of the body, and each of the lower portions of the inner cylinder and the outer cylinder is provided at each lower side thereof. The inner and outer double guide cylinders are continuously connected at intervals, and the inner and outer duplexes are provided at the lower side of both guide cylinders, and independently of the inner space of the inner cylinder and the dust swirling space. The inner and outer dust collecting portions of the communicating structure are detachably connected to each other, and the upper chamber of the body communicating with the inner space of the inner cylindrical body is provided with an air purifier having a filter with a dust removing device and a clean air outlet. A large number of air exhausts which form a chamber and communicate the dust swirling space and the internal space to both or any one of the upper surface of the inner cylinder and the lower guide cylinder. Drill holes. (Claim 1)

(2) An air exhaust hole communicating the dust swirling space and the internal space is provided on both the inner cylinder and / or the upper part of the lower guide cylinder, and on the lower side of the filter. Drill on the surface outside the projection. (Claim 2)

(3) An inner / outer double guide cylinder connected to each lower side of the inner cylinder and the outer cylinder is formed in a substantially conical shape whose diameter gradually decreases downward. The integrally formed inner and outer dust collecting portions are detachably connected to the lower end openings of the respective guide cylinders. (Claim 3)

(4) Each of the inner and outer dust collecting portions is formed in a bucket structure having inner and outer double wheels and moving wheels, and the inner and outer double dust collecting portions are provided on the lower side of the fuselage. A lift capable of integrally lifting the collecting section and connecting each upper end of the collecting section to the lower end of each of the guide cylinders of the inner cylinder and the outer cylinder closely. (Claim 4)

According to the first aspect described in the above (1), the dust-containing gas sent into the airframe from the air supply passage is introduced into the dust swirl space between the inner cylinder and the outer cylinder. At this time, relatively coarse and heavy dusts such as sparks, which are likely to cause a fire, gradually descend while rotating the outermost periphery of the dust swirling space by centrifugal force, and the lower guide cylinder It is guided by the body and dropped and collected by the outer dust collection unit. On the other hand, the airflow containing fine dust that does not contain sparks, etc., passes through the air exhaust holes and enters the upper chamber of the fuselage from the internal space of the inner cylinder, where it is filtered by a filter to become clean air and from the outlet The fine dust that is discharged to the outside of the fuselage and collected by the filter is dropped and collected by the inside dust collection unit connected to the lower part of the inner cylinder during operation of the dust removal device, and is collected by the outside dust collection unit. Since it is completely separated from the coarse dust containing the sparks and the like collected in the section, the danger of ignition can be eliminated. Furthermore, the inner dust collecting portion is attached to the lower end of the guide cylinder, and the air exhaust hole is provided in the inner cylinder or in the upper part of the guide cylinder,
Since the two are separated from each other vertically, the airflow entering the internal space from the dust swirling space through the air exhaust hole does not re-scatter fine dust collected in the inner dust collecting portion, and therefore, It is possible to prevent the fine dust from re-adhering to the filter.

According to the means according to claim 2 described in the above (2), the surface where the air exhaust hole deviates from the lower projection portion of the filter, specifically, the surface on which dust falling from the filter does not directly fall. It is possible to prevent the fine dust dropped from the filter by the dust removing operation from falling into the outer dust collecting portion where the sparks and the like are collected through the air exhaust holes, and thereby, the dust is removed. It is possible to reliably prevent fire during operation.

According to the means according to claim 3 described in the above (3), each of the guide cylinders connected to the lower side of the inner cylinder and the outer cylinder is formed in a substantially conical shape with a tapered end. Since it is formed in a substantially hopper shape, coarse dust such as sparks swirling in the dust swirling space is guided to the hopper-shaped guide passage and is extremely smoothly collected in the outer dust collecting portion while swirling. Also, fine dust falling from the filter by the dust removal operation can be guided to the substantially conical hopper shape of the guide cylinder, and can be smoothly collected by the inner dust collection unit. Due to the shape in which the lower end of the body is finely squeezed, the size and size of each dust collection unit can be reduced.

According to the means of claim 4 described in the above (4), coarse dust such as sparks and fine dust removed from the filter are separated into the respective dust collecting sections formed in a bucket structure. The bucket-shaped dust collecting section can be collected and moved to an arbitrary place by a moving wheel and easily discarded. Can be easily and reliably performed using a lift provided on the lower side of the vehicle, and the removal can be easily performed using the lift.

As described above, the above (1) to (1)
By solving the above technical problem by means of (4),
The problem of the conventional technique can be solved.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a dust collector according to the present invention, and FIG. 2 is a plan sectional view taken along line XX of the present invention. FIG. 3 is a front sectional view taken along the line YY of FIG. 2. In these drawings, reference numeral 1 denotes a body of a dust collector having a substantially cylindrical shape as a whole, and 11 denotes a body of the dust collector. Support leg to support on the surface, 1A
Reference numerals 1B and 1B denote a dust-containing gas supply port and a clean air discharge port provided in the body 1, including the air supplied into the body 1 from the supply port 1A by a suction action or a blowing action of a blower (not shown). After the dust gas is filtered by a dust collecting device provided in the body 1, the dust gas becomes clean air and is discharged from the discharge port 1B.

2 is a partition plate for partitioning the inside of the body 1 up and down,
Reference numeral 3 denotes an outer cylinder connected to the lower side of the body 1, and 4 denotes an inner cylinder which is provided concentrically inside the outer cylinder 3 with a space therebetween. Constitutes a dust swirling space 3 ′ of dust-containing gas sent through the air supply port 1 </ b> A. The dust swirling space 3 ′ is a coarse dust in the dust-containing air, that is, a spark plug. Dust HD weighing like
Are rotated along the outermost circumference by centrifugal force to exert a function of separating from fine dust.

In the drawing, a dust swirling space 3 'is formed by connecting an outer cylinder 3 to the lower side of the body 1 to form a dust swirling space 3'.
The lower end of the body 1 may be used as it is without providing the outer cylinder, and the selection is arbitrary.

Reference numerals 3E and 5E denote external and internal guide cylinders connected to the lower ends of the outer cylinder 3 and the inner cylinder 4, respectively. These guide cylinders 3E and 5E are both illustrated. And a hopper-shaped external guide passage 3A which is formed in a substantially conical shape whose diameter gradually decreases downward, and whose interval between the two guide cylinders 3E, 5E communicates with the dust swirling space 3 '.
And the inside of the inner guide cylinder 5E is the inner cylinder 4
Is formed in an internal guide passage 5X of the same hopper structure, which leads to the internal space 5 of the above, and the coarse dust HD such as sparks separated in the dust swirl space 3 'passes downward through the external guide passage 3A. It is made to fall.

1H is an upper chamber of the machine body 1 partitioned by the above-mentioned partition plate 2, that is, an air purifying chamber, and 2A is an internal space 5 of the inner cylindrical body 4 opened at the center of the partition plate 2 and an air purifying chamber. Reference numeral 6 denotes a communication filter which is mounted on the communication port 2A, and includes a molding filter which is fed from the internal space 5 through the communication port 2A to the air cleaning chamber 1H through the air exhaust hole described later. The dust flow is generated by the molding filter 6.
Then, after the fine dust is collected, the air becomes clean air and is discharged from the discharge port 1B.

Numeral 7 denotes a dust removing pipe (dust removing device) which blows out the dust adhering to the filter 6 by blowing out compressed air sent through an air hose 8 from each nozzle 7A. 7 is a drive mechanism 9
While being reciprocated along the guide shaft 10, the filter 6 is configured to blow dust to the entire filter 6 to remove dust, and the dust blown off from the filter 6 is removed from the inner cylindrical body. 4 through the inner space 5 to be dropped toward the lower inner guide passage 5X.

In FIG. 2, reference numerals 10A, 10A denote support legs of the guide shaft 10, and 1R, 1R denote mounting plates for the support legs 10A, 10A installed on both sides inside the air cleaning chamber 1H.

In FIG. 3, 4P...
And the upper surface of the guide cylinder 5E, or both surfaces, and the surface deviating from the lower projection of the filter 6, that is, the dust P falling from the filter 6.
A large number of air vents provided in the area where D does not fall directly,
The air exhaust holes 4P are fed into the dust swirling space 3 'from the air supply port 1A and swirled, so that the remaining dust-containing airflow that separates the coarse dust HD such as sparks, that is, the fine air without danger of ignition It is configured such that only an airflow containing dust can be sent to the internal space 5 of the inner cylinder 4 and filtered by the filter 6.

Next, in FIG. 1 and FIG.
The reference numeral 2 generally designates a bucket for collecting dust. Inside the bucket 12 having wheels 12K and 12K (casters) for movement attached to the bottom, a constant interval is provided between the outer periphery and the bottom surface. In the state, the above-described internal guide passage 5X
Is provided, and is configured to collect dust PD falling down by its own weight and dust PD falling down from the filter 6.

The reference numeral 14A denotes a dust collection passage communicating with the outer guide passage 3A formed at a distance between the inner peripheral wall of the above-mentioned dust collecting bucket 12 and the outer peripheral wall of the inner dust collecting portion 13. As shown in the drawing, the inner and outer dust collecting sections 13 and 14 have independent integral structures, but only the inner dust collecting section 13 can be detached alone. May be configured.

FIGS. 4 and 5 show that the above-described bucket 12 is lifted off the floor surface as shown in FIG.
And the inner and outer dust collecting sections 13 and 14 as shown in FIG.
Are connected to the above-described inner guide passage 5X and the lower end of the external guide passage 3A in close contact with each other, and when the collected dust HD and PD are discarded, as shown in FIG. The structure of a lift capable of lowering the entire bucket 12 on the floor surface is described below. In these drawings and FIGS. 1 and 2, reference numeral 15 is provided inside the support leg 11 described above. Lift support frame, 15
Reference numerals A and 15A denote left and right support plates.

Reference numerals 16T, 16T denote lift levers which are mounted on the left and right support plates 15A, 15A so as to be rotatable up and down using mounting shafts 19, respectively, and 16 denotes a lift lever between the root ends of these lift levers 16T, 16T. Mounted lift rod, 17,1
Reference numeral 7 denotes left and right elevating plates 17A which are vertically slidably mounted between the side surfaces of the distal end portions of the lift levers 16T, 16T and the left and right support plates 15A, 15A by the mounting shaft 19 and the upper mounting shaft 18, respectively. And 17B are each mounting shaft 1
8 shows guide slots for 8, 19;

Further, in the drawing, 17X, 17X are left and right lift pieces bent at the upper ends of the left and right lifting plates 17, 17, and 12T, 12T are left and right lift pieces 17X, 1X.
7X, handles which protrude from the left and right sides of the bucket 12 in correspondence with 7X are shown. Further, in FIGS.
0A, the bearings are rotatably mounted on the side surfaces of the left and right elevating plates 17, 17, respectively.
Are fitted in guide grooves 16R of a substantially arc shape formed on the side surfaces of the distal ends of the lift levers 16T, 16T as shown in the figure.

According to the lift configured as described above, FIG.
The lift levers 16T, 16T are lifted from the state of FIG.
When the bearing 20 is pushed down to the state shown in FIG. 4, the left and right lifting plates 17, 17 are pushed up and the left and right lift pieces 17X, 17X,
17X pushes up the handles 12T, 12T of the bucket 12, so that the entire bucket 12 is pushed up in a state where the wheels 12K, 12K are floated, and the inside and outside dust collection sections 1
3 and 14 are connected in a state of being in close contact with the lower ends of the inner and outer guide passages 5X and 3A via packings RK, respectively, so that the dust PD ... and HD ... are separated. Enables recovery.

Further, the lift lever 16 depressed
When the T and 16T are pivoted upward with the lift rod 16 as shown in FIG. 5 and hung on the hook 15F, the bearing 20 moves to the lower end side of the guide groove 16R, and The lowering plates 17 and 17 descend to lower the bucket 12 on the floor surface as shown in FIG. 5 so that the wheels 12K can move.

The structure of the above-described lift is an example of the embodiment, and the bucket 12 may be moved up and down by using other driving means such as a motor or a cylinder. There is also a case where dust PD and HD are separated and collected by using other collecting means such as a case and a case. Needless to say, the structures of the lift and the bucket 12 are not limited to those shown in the drawing, and the selection is optional. I do.

Since the dust collector according to the present invention has the above-described configuration, the blower is driven to supply the dust-containing gas to the supply port 1.
If the dust-containing gas is sent from A into the dust swirling space 3 ', the dust-containing gas swirls along the space 3'.
The dust gradually falls in the direction of the external guide passage 3A while turning around the outermost periphery of the space 3 ', and is collected in the dust collecting portion 14 outside the bucket 12.

On the other hand, the remaining dust-containing gas separated from the coarse dust HD in the dust swirling space 3 'is supplied to the air exhaust holes 4P.
After passing through the internal space 5 to the filter 6, where the fine dust is collected, the air becomes clean air and is discharged out of the machine body 1 through the discharge port 1B.

Then, the fine dust collected by the filter 6 is blown off by blowing out the dust removing air from the dust removing pipe 7 and passes through the internal space 5 and the internal guide passage 5X to the inside dust collecting portion 13 of the bucket 12. Collected and collected dusts PD..., HD.
It can be easily discarded using 2K and 12K.

[0037]

As described above, according to the dust collecting apparatus of the present invention, combustible dust including fire sparks and fumes and ordinary fine dust can be collectively collected by one apparatus. In addition to simplifying the configuration of the entire device, it can save space and reduce cost, and separates and collects flammable coarse dust such as sparks and fumes and fine dust in separate collection sections. Therefore, it has an advantage that it can be used safely without the danger of fire occurrence, and is very suitable for use in welding work, fusing work, or collecting dust gas generated by laser processing or the like. .

[Brief description of the drawings]

FIG. 1 is a front view illustrating an entire dust collecting apparatus according to the present invention.

FIG. 2 is a plan sectional view taken along line XX of FIG.

FIG. 3 is a front sectional view taken along line YY of FIG. 2;

FIG. 4 is a partial cross-sectional front view illustrating a lifting state of a bucket by a lift operation.

FIG. 5 is a partial cross-sectional front view illustrating a state where a bucket is lowered on a floor surface by a lift operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dust collector body 1A Air supply port 1B Discharge port 1H Air clean room 3 Outer cylinder 3E External guide cylinder 3A External guide passage 3 'Dust swirl space 4 Inner cylinder 4P Air exhaust hole 5 Inner space 5E Inner guide cylinder 5X Internal guide passage 6 Filter 7 Dust removal pipe 12 Bucket 12K Wheel 13 Inner dust collecting unit 14 Outer dust collecting unit 16T Lift lever PD Fine dust HD Coarse dust

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B01D 50/00 501 B01D 50/00 501H 502 502B F term (reference) 4D031 AC04 BA03 BA10 BB06 DA05 EA03 4D058 JA14 MA15 MA47 QA01 QA09 QA17 RA02 SA20 UA11

Claims (4)

[Claims] 1. A method for separating fire dust, flame, and other various dusts, which may cause a fire, from dust-containing gas sent into an airframe through an air supply passage in which a suction or blowing action of a blower is performed. A dust swirling space communicating with the air supply passage by an inner / outer double cylindrical body, wherein the inner cylindrical body and the outer cylindrical body are provided. The inner and outer double guide cylinders are connected to each other on each lower side at an interval.
In addition, the inner and outer dust collecting portions of the structure that independently communicate with the inner space of the inner cylinder and the dust swirl space are detachably connected, and the upper part of the body that communicates with the inner space of the inner cylinder. The chamber is an air purifying chamber having a filter with a dust removing device and a discharge port for clean air, and both the inner cylinder and the upper portion of the lower guide cylinder, or any one of the inner cylinder and the lower guide cylinder. A dust collector, wherein a large number of air exhaust holes communicating the dust swirling space and the internal space are formed on a surface. 2. An air exhaust hole communicating between the dust swirling space and the internal space is provided on both or one of the upper portion of the inner cylinder and the lower guide cylinder, and the lower projection of the filter. The dust collector according to claim 1, wherein the dust collector is formed on a surface outside the portion. 3. An inner / outer double guide cylinder, which is continuously connected to each lower portion of the inner cylinder and the outer cylinder, is formed in a substantially conical shape whose diameter gradually decreases downward. 2. The dust collector according to claim 1, wherein the inner and outer dust collecting portions formed integrally are detachably connected to a lower end opening of each of the guide cylinders. 4. The inner and outer dust collecting sections are formed in a bucket structure having dual inner and outer wheels and moving wheels, and the inner and outer double dust collecting sections are provided on the lower side of the fuselage. 3. A lift which lifts up the parts integrally and which can connect the upper ends thereof to the lower ends of the guide cylinders of the inner cylinder and the outer cylinder closely.
Dust collector as described.