JPH0637807Y2 - Dust collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a dust collector used for collecting dust of wood chips in a woodworking factory, for example.

(Prior Art) For example, in a woodworking factory, a dust collector called a simple dust collector, which is small, movable, and relatively inexpensive, is used for collecting wood chips generated by an electric saw or the like. There is. A conventional example of this type of dust collector is shown in FIG.

That is, the dust collector 1 includes a suction device 5 including a motor 3, an impeller 4 and the like on a main body base 2 having wheels 2a, and
It is configured by including a filter dust collecting unit 6 for filtering dust collected by the suction device 5. The filter dust collecting part 6 has a dust collecting bag 8 made of filter cloth detachably attached to the lower part of an introducing chamber 7 which is communicated with the suction device 5 and has upper and lower both sides where dust is introduced together with air, and the dust collecting bag 8 is detachable. The upper part of the filter 7 is also provided with a bag-shaped filter 9 made of filter cloth. In such a configuration, when the suction device 5 is driven, dust is sucked together with air from the suction port 5a, dust is mainly captured by the filter 9 and only air is discharged to the outside, and the collected dust is collected. It can be stored in the bag 8. When dust collects in the dust bag 8 to some extent, the dust is removed from the introduction chamber 7, and the dust inside is discarded.

(Problems to be solved by the invention) By the way, in the dust collecting apparatus 1 using the filter 9 made of such a filter cloth, the filter 9 is gradually clogged with use, and the efficiency of suction (dust collection) is improved. Going down. Therefore, when the clogging condition becomes large, the surface of the filter 9 is mechanically vibrated or the operator taps the filter 9 with a stick while the device is stopped. I try to remove the dust from it. Here, the reason why the device is stopped during the dust removal work is that the suction device 5 cannot be removed by the suction pressure while it is still driven.

However, in the above conventional dust collector 1, the filter 9
Is a bag shape (for example, diameter 650 mm, length 1.4 m) and the filtration area is not so large, so that the filter 9 is clogged relatively early, and therefore the continuous use time is short. There is a drawback that dust removal work must be performed frequently.

Therefore, an object of the present invention is to provide a dust collector that can be used continuously for a long period of time.

[Structure of the Invention] (Means for Solving the Problem) A dust collector of the present invention has a suction device for sucking dust and an opening at the upper and lower portions, and the dust sucked by the suction device is pushed together with air. Introduction chamber, a dust bag provided at the lower part of the introduction chamber in communication with the lower opening, and a filter for filtration dust collection provided at the upper part of the introduction chamber in communication with the upper opening. And a suspending mechanism for suspending the upper end of the filter, the filter is covered with a filter cloth perforated plate having a plurality of holes on the upper end of the introduction chamber, and the upper end is closed. Is characterized in that a plurality of slender bag-like filter cloth cylinders that are open at the top and bottom are integrally attached so that the lower end openings thereof communicate with the holes.

(Operation) According to the above means, the dust sucked together with the air by the suction device is collected by the filter and stored in the dust bag.

In this case, since the filter for filter dust collection is configured by having a plurality of vertically elongated bag-shaped filter cloth cylinders, it is possible to increase the filter dust collection area and reduce the efficiency of dust collection. It can be prevented for a long time. Therefore, it is possible to dispense with the dust removal work less frequently.

And, since the plurality of bag-shaped filter cloth cylinders are integrally attached to the perforated plate made of filter cloth which is covered on the upper end of the introduction chamber,
It can be easily installed in the introduction chamber and can be manufactured at low cost.

Moreover, since the upper end of the filter is suspended by the suspension mechanism, the bag-shaped filter cloth tube does not suddenly rise or hang down when the device is started or stopped.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 2 shows the overall structure of the dust collector 11 according to this embodiment. The dust collector 11 includes a body base 13 having wheels 12.
A suction device 14 for sucking dust, a filter dust collecting portion 15 for collecting dust on the filter cloth, and the like are provided on the top.

The suction device 14 includes an impeller 17 driven to rotate by a motor 16.
Is provided in the casing 18. Further, the casing 18 is provided with a suction port 19, and a tip portion (not shown) is arranged in the suction port 19 at a position where dust is generated.
Twenty proximal ends are designed to be connected.

On the other hand, the filter dust collecting unit 15 has a dust collecting bag 22 below the introduction chamber 21 provided in the main body base 13 and the introduction chamber
The upper part of 21 is a filter for collecting dust 23 described later in detail.
It is configured by mounting. In this case, the introduction chamber 21 has a cylindrical shape with upper and lower surfaces open, and its side wall portion communicates with the casing 18 of the suction device 14 via a duct 24.
As a result, when the suction device 14 is driven, the sucked dust is pushed and introduced into the introduction chamber 21 together with the air. The dust collection bag 22 is made of a filter cloth such as nylon, and is detachably attached to the lower end portion of the introduction chamber 21 by, for example, a one-touch band (not shown). As a result, the dust bag 22 communicates with the lower opening of the introduction chamber 21.

Now, the filter 23 will be described with reference to FIGS. 1, 3, and 4.

This filter 23 is configured by integrally including a plurality of bag-like filter cloth cylinders 25, for example, 14 bag-like filter cloth cylinders 25 made of a filter cloth such as nylon, tetron, and cotton, and a perforated plate 26 also made of a similar filter cloth. ing. Among them, the perforated plate 26 has a thin circular lid shape covering the upper portion of the introduction chamber 21, and 14 holes 26a are formed evenly over the entire upper surface portion thereof. Also,
A felt 27 is attached to the inner peripheral surface of the perforated plate 26, and a band 28 for hanging the band and a string for hanging are attached to the outer peripheral part.
29 are provided. The bag-shaped filter cloth cylinder 25 has a long bag-like shape having a lower end having a diameter corresponding to the hole 26a of the perforated plate 26, and the lower end is sewn to each hole 26a. 14 (The quantity depends on the diameter of the perforated plate 26)
Are integrally provided on the perforated plate 26. In this embodiment,
The bag-shaped filter cloth tube 25 is formed by first forming a long tubular filter cloth,
By squeezing the center part of this tubular filter cloth,
Two adjacent bag-shaped filter cloth cylinders 25 are formed from one cylindrical filter cloth, and the upper ends thereof are connected by the connecting portion 25a. Further, the inner surface of each bag-shaped filter cloth cylinder 25 is provided with, for example, metal rings 30 for shape retention, which are located at, for example, two positions on the way, for example. Here, for example, the perforated plate 26 has a diameter of 650 mm, the perforated plate 26 has a height of 80 mm, and the bag-like filter cloth tube 2
The diameter of 5 (hole 26a) is 130 mm, and the length of bag-shaped filter cloth cylinder 25 is 1.4 m.

In the filter 23 configured as described above, the perforated plate 26 is placed on the upper surface of the introduction chamber 21, and the one-touch band 31 made of, for example, stainless steel is used as the string 28 for band passing.
It is attached to the upper part of the introduction chamber 21 by tightening through the part. Thus, the filter 23 is provided such that each bag-shaped filter cloth cylinder 25 communicates with the introduction chamber 21. Further, at this time, the felt 27 attached to the inner peripheral surface portion allows the inner peripheral surface portion of the perforated plate 26 to be brought into close contact with the outer wall portion of the introduction chamber 21 in a non-slip state to obtain high airtightness.

The upper end of the filter 23 (bag-shaped filter cloth cylinder 25) is hung by the suspension mechanism 32 on the ceiling 33 of the building, for example. In this case, the suspension mechanism 32 includes a suspension ring 34, an upper spring 35 whose lower end is connected to the center of the suspension ring 34, and seven lower springs 36 whose upper ends are connected to the suspension ring 34. And connecting the lower ends of the lower springs 36 to the connecting portions 25a connecting the upper ends of the two adjacent bag-shaped filter cloth cylinders 25 with the upper ends of the upper springs 35 attached to the ceiling 33. The filter 23 is thus suspended. A pull cord 37 is attached to the suspension ring 34 and hangs downward.

Next, the operation of the above configuration will be described.

When the suction device 14 is driven, the suction port 19 is passed through the duct 20.
From the inside, dust such as wood chips is sucked into the casing 18 together with air, and is pushed into the introduction chamber 21 through the duct 24. And
Due to the filter dust collecting action of the filter 23 made of filter cloth, air is mainly discharged from the filter 23 to the outside, and only the dust is captured by the filter 23 and accumulated in the dust collecting bag 22.

In this case, the filter 23 gradually becomes clogged with use, but the filter 23 is composed of a plurality of bag-shaped filter cloth cylinders.
Since it is composed of 25, it has a filtration area about three times that of the filter 9 described in the conventional example. Therefore, the decrease in the efficiency of suction (dust collection) due to clogging becomes relatively gradual.

When the clogging state becomes large, the filter 23 is vibrated while the apparatus is stopped, and dust is removed from the surface of the filter 23. This work can be performed by the worker pulling the drawstring 37 connected to the suspension ring 34 of the suspension mechanism 32. That is, by pulling the drawstring 37, the suspension ring 34 suspended on the ceiling 33 via the upper spring 35 is vertically vibrated, and the vibration of the suspension ring 34 is generated via the lower spring 36. The bag-shaped filter cloth cylinder 25 is transmitted to the bag-shaped filter cloth cylinder 25.
Will also vibrate up and down. In this case, spring 3
Due to the action of 5,36, even with a slight pulling operation of the drawstring 37, the entire bag-shaped filter cloth tube 25 repeats vibration a number of times, so that the dust can be effectively removed.

Further, when dust collects in the dust bag 22 to some extent, the dust is removed from the introduction chamber 21, and the dust inside is discarded.

According to this embodiment, since the filter 23 is composed of the plurality of bag-shaped filter cloth cylinders 25, it is possible to increase the filtration dust collection area of the filter 23 and reduce the dust collection efficiency. It can be prevented for a long time. Therefore, it is possible to eliminate the need to perform dusting-off work very often, and it is possible to use the dust collector 11 continuously for a long period of time. By the way, when used for collecting wood dust from a woodworking factory, the dust collector 1 described in the conventional example had to perform dusting-off work by continuous use for about 1 hour. Now, it is no longer necessary to pay off for at least 3 days.

By the way, in order to increase the filtration area of the filter as in the present embodiment, the same shape as the perforated plate 26 of the present embodiment is formed of, for example, a steel plate, and a cylindrical mounting portion is further welded to each hole thereof. It is also conceivable that the perforated disc fixed by means of the above is attached to the upper surface of the introduction chamber, and the bag-shaped filter cloth cylinders each having a small diameter are attached to the respective attachment portions of the perforated disc. However, in this case, mounting of the filter in the introduction chamber becomes troublesome, and the material cost and the like become expensive, and the cost becomes high as a whole.

On the other hand, in the present embodiment, the plurality of bag-shaped filter cloth cylinders 25 are integrated with the perforated plate 26, and furthermore, the perforated plate 26 is attached so as to cover the upper portion of the introduction chamber 21. The attachment to the introduction chamber 21 is extremely easy, and the cost can be reduced.

In addition, in the present embodiment, the upper end of the bag-shaped filter cloth cylinder 25 is a lifting mechanism.
Since it is suspended by 32, the bag-shaped filter cloth cylinder 25 does not suddenly rise or hang down when the suction device 14 is started or stopped. Therefore, it is possible to prevent the bag-shaped filter cloth cylinders 25 from rubbing against each other, being entangled with each other, or hitting something at the time of standing up. It is possible to improve the sex.

Moreover, particularly in this embodiment, since the suspension mechanism 32 is configured to include the upper spring 35 and the lower spring 36, it is possible to effectively remove dust by pulling the drawstring 37. Therefore, as compared with the conventional device that vibrates the filter 9 mechanically or by an air gun or the like, such a device is unnecessary and the cost can be reduced. Alternatively, even in the case where the worker himself / herself performs the scrubbing work, it is possible to complete the operation by an extremely simple operation of pulling the drawstring 37 instead of the troublesome work of hitting with a stick.

Although the dust bag 22 is made of a filter cloth in the above embodiment, a bag made of, for example, polyethylene or polypropylene may be used to discard the dust together with the collected dust. Further, the hanging mechanism 23 is configured to hang the bag-shaped filter cloth cylinder 25 on the ceiling 33. However, for example, a rod-shaped member is erected on the main body base 13 and is hung on the upper end thereof. Is also good. Furthermore, the suspension mechanism may be a simple string without using a spring.

In addition, the number and size of bag-shaped filter cloth cylinders may be appropriately set according to the type of dust in the place of use, etc.
The present invention can be variously modified without departing from the gist thereof.

[Effects of the Invention] As is apparent from the above description, according to the dust collector of the present invention, the filter for filter dust collection is formed by integrating the plurality of bag-shaped filter cloth cylinders with the porous plate made of filter cloth. It has an excellent structure that it can be used continuously for a long period of time because it is configured to be attached to the filter and a hanging mechanism that suspends the upper end of the filter is provided, and that the structure is simple and inexpensive. It is effective.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view of a filter portion, FIG. 2 is a side view of the whole, FIG. 3 is a top view of the filter, and FIG. [Fig. 3] is a vertical sectional side view of a perforated plate portion of the filter. Further, FIG. 5 is a view corresponding to FIG. 2 showing a conventional example. In the drawing, 11 is a dust collector, 13 is a main body base, 14 is a suction device, 15 is a filter dust collector, 21 is an introduction chamber, 22 is a dust bag, 23 is a filter, 25 is a bag-like filter cylinder, and 25a is A connecting portion, 26 is a perforated plate, 26a is a hole, 30 is a ring, 32 is a suspension mechanism, 34 is a suspension ring, 35 is an upper spring, 36 is a lower spring, and 37 is a drawstring.

Claims (1)

[Scope of utility model registration request] 1. A suction device for sucking dust, an introduction chamber having openings at upper and lower parts, into which dust sucked by the suction device is pushed together with air, and a lower opening of the introduction chamber communicating with the lower opening. A filter for dust collection provided in the upper part of the introduction chamber in communication with the upper opening, and a suspending mechanism for suspending the upper end of the filter. The filter is a perforated plate made of a filter cloth covered with an upper end portion of the introduction chamber and having a plurality of holes, and a plurality of vertically elongated bag-shaped filter cloth cylinders having an upper end closed and a lower end opened, and a lower end thereof. A dust collector, wherein the opening is integrally attached so as to communicate with each of the holes.