JPH0247247B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a filter dust removal device, including a dust collector,
The present invention relates to a filter dust removal device suitable for removing dust attached to a filter of a vacuum cleaner or the like.

There have been various methods for removing the collected dust in filters used in dust collectors, etc. However, when the filter material is soft, such as cloth, the surface of the filter itself is Methods such as direct hitting, rocking, scraping off dust, and blowing against the wind are used.

However, all of these devices require space and have complicated mechanisms, which are disadvantageous in terms of cost.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a filter dust removal device that is simple and inexpensive and has a high dust removal effect even in cloth filters.

The main point of the present invention is that in the case of a relatively hard filter material such as non-woven fabric, if vibration is applied to a part of the filter, the vibration will be transmitted to the entire filter surface and the dust removal effect will be large; It is a well-known fact that cloth (woven fabric) is suitable as a filter material in the case of , and in the case of such a cloth filter, the material itself is soft, so even if a part of the filter is subjected to vibration, Taking into account the fact that vibrations are not transmitted over the entire surface of the filter, it is possible to vibrate the entire surface of the filter using a simple method.

The present invention is characterized by a breathable filter that is used in a dust collector, etc., and has a vibration plate attached to the inside of a bag filter in a filter section that filters and collects suction dust. A filter dust removal device equipped with a shape retainer.

Next, embodiments according to the present invention will be described based on the respective figures.

Here, FIG. 1 is an overall perspective view of a dust collector for a grinder equipped with a filter dust remover according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view thereof, and FIG. 3 is a part of a dust remover. FIG. 4, which is an exploded perspective view of a filter dust removal device according to an embodiment of the present invention, is an enlarged sectional view of the main parts thereof.

In each of the above figures, 1 is a grinder motor,
2 is the grinder whetstone, 3 is the hood, 4 is the mounting gasket, 5 is the water receiver for the grindstone, 6 is the dust collector body, 7 is the dust removal knob, 8 is the dust removal arm, 9 is the sealing part, 10 is the dust collector It's box.

In addition, 11 is a dust removal lever, 12 is a dust removal device, and 1
3 is a filter, 14 is a filter frame, 15 is a filter shape holder, 16 is an excitation plate, 17, 18
19 is a spark prevention plate, 19 is a fan, 20 is a dust collector motor, 21 is a discharge louver, and 22 is a switch.

That is, first, as shown in FIG. 1, the illustrated dust collector for a grinder has a double-headed grinder mounted on the upper part of the dust collector body 6, and the grinder powder is directly sucked into the dust collector body 6 without using a duct or the like. It is designed to filter and has a very compact overall structure.

To further explain this in detail with reference to Figure 2, the first
By operating the switch 22 shown in the figure, the grinder motor 1 and the dust collector motor 20 are operated to generate a flow of air in the flow path shown by the solid arrow.

Then, the dust ground by the grinder whetstone 2 is sucked through the hood 3 and the spark prevention plate 1
7, 18, etc., and is filtered by the filter 13, and only the clean air is guided from the fan 19 directly connected to the dust collector motor to the discharge louver 21 as shown by the dashed arrow, and is discharged outside the machine. It is something that

In the above, the grinding dust collected by the filter 13 is removed by reciprocating the dust removal knob 7 shown in FIG. A dust remover 12 provided on a dust removal lever 11 is moved directly to vibrate a filter 13, which is then brushed off and stored in a dust box 10.

This dust removing structure for dust removal will be explained in detail below with reference to FIGS. 3 and 4.

That is, the filter section and the dust removal section are
As shown in FIG. 4, a filter 13 related to a cloth filter formed in a corrugated shape, that is, a bag filter.
is fixed to the filter frame 14, and a breathable soft member such as a woven fabric is disposed inside the filter 13 to prevent the peaks of the filter 13 from collapsing due to suction wind pressure. It consists of a filter shape holder 15 made of The vibration plate 16 is U-shaped, and its both ends protrude from the sides of the filter shape holder 15, and these protruding parts abut against the dust remover 12 (thin metal or plastic plate, spring, etc.). It is designed to bend and restore itself to give it vibration.

Therefore, when the dust removal arm 8 is moved in the direction of the arrow in FIG. 4, the dust removal element 12 and the vibrating plate 16 come into contact and both are bent as shown. When the dust removal arm 8 is further moved, the vibrating plate 16 is repelled by its elasticity, and the vibration is transmitted to the entire filter shape holder 15, causing the entire surface of the filter 13 to vibrate, causing the adhering dust to peel off and fall. It is.

According to the above-mentioned aspect, vibrations are sufficiently transmitted to the entire filter surface, so that the dust removal effect is extremely large.

According to the experimental results, as shown in the dust removal performance comparison diagram in Figure 5, compared to the conventional tapping method shown by the broken line,
The method according to the present example shown by the solid line includes a return to the original state after dust removal, and it has been found that the relationship between the amount of collected dust and the amount of suction air is significantly improved. The difference in this effect is
It has been confirmed through experiments that the finer the dust collected by the filter, the larger it becomes.

Although it is effective in this way, its structure is simple, consisting of a filter part and parts related to filter shape retention and vibration excitation. This can significantly reduce the size of the dust collector, which also leads to downsizing of dust collectors and improved productivity.

In the above-mentioned embodiment, the shape of the vibration plate is U-shaped, but if the shape is such that it can provide vibration for dust removal, it may be shaped like a U-shape or other shape. It can be any shape.

Moreover, although the above-mentioned one relates to a dust collector for a grinder, the present invention is a general-purpose one that can be applied to other dust collectors or dust collectors such as vacuum cleaners.

Taking all of the above into consideration, the present invention makes it possible to remove dust from cloth filters, which has been considered difficult in the past, with a very simple operation and a great effect. At the same time, the large space occupied by conventional dust removal mechanisms can be reduced and compacted, making it an invention with excellent practical effects that can greatly contribute to the high performance and miniaturization of dust collectors and other devices that use filters. be able to.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view of a dust collector for a grinder equipped with a filter dust remover according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view thereof, and Fig. 3 also shows a part of a dust remover. FIG. 4 is an exploded perspective view of a filter dust removal device according to an embodiment of the present invention, FIG. 4 is an enlarged sectional view of the main part thereof, and FIG. 5 is a comparison diagram of dust removal performance. 11...Dust removal lever, 12...Dust removal element, 13
... Filter, 14 ... Filter frame, 15 ... Filter shape holder, 16 ... Vibration plate.

Claims (1)

[Scope of Claims] 1. A ventilation system in which a vibrating plate that applies vibration for dust removal is attached to the inside of a bag filter in a filter section for filtering and collecting suction dust, which is used in a dust collector or the like. A filter dust removal device characterized by being provided with a filter shape retainer. 2. In what is stated in claim 1,
A filter dust removal device in which the vibration plate is made of an elastic plate-like member, and the breathable filter shape holder is made of a soft breathable member. 3 In what is stated in claim 2,
The vibration plate made of an elastic plate-like member and the breathable filter shape holder made of a soft breathable member are manufactured integrally by means such as adhesive, and the vibration plate is used to hold the breathable filter. A filter dust removal device that is thinner and harder than the ingredients.