JPS596885Y2 - Filter dust removal equipment such as dust collectors - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dust removal device that can effectively remove dust adhering to the filter of a dust collector or vacuum cleaner.

Conventionally, there are two types of dust removal devices for filters: a backwash type that removes dust by sending backwash air to the filter, and a vibration type that removes dust by vibrating the filter, but backwash type dust removal devices have a very difficult structure. has the disadvantage of being complicated and expensive,
In addition, vibrating dust removers have a structure that simply vibrates the filter up and down or left and right, so they cannot achieve sufficient dust removal effects. In the case of a type filter, there was a problem that the dust removal effect was further reduced.

In view of the above-mentioned points, the present invention, when removing dust by applying vibration to a cylindrical filter with an inner and outer double structure, exerts an excellent dust removal effect by twisting the inner and outer filters, thereby increasing the dust removal effect. DESCRIPTION OF THE PREFERRED EMBODIMENTS It is an object of the present invention to provide an improved dust removal device for a filter, and embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a vacuum cleaner according to the present invention, in which 1 is a trolley with wheels 1a and lb attached, 2 is a machine frame provided on the trolley 1,
3 shows a filter box connected to the machine frame 2, and 4 shows a dust collection packet detachably attached to the bottom of the filter box 3.

A vacuum blower 5 connected to the filter box 3 and a motor 6 for driving the blower 5 are installed inside the machine frame 2, and a dust collection hose (not shown) is installed on the outside of the bottom of the filter box 3. ), and a partition plate 8 having a large ventilation hole 8a in the center is attached to the inner bottom of the box 3.

Next, the reference numeral 9 indicates a filter housed in the filter box 3, and this filter 9 has a generally cylindrical shape that widens toward the end with an inlet 9' for dust-containing air at the bottom. However, in order to increase the collection area as much as possible and increase the dust collection efficiency, the entire structure has a double structure inside and outside, as shown in the cross-sectional view.

That is, 9a is an inner cylinder constituting the filter 9, and the upper surface 9a' is closed and the bottom surface is open.

Reference numeral 9b denotes an intermediate cylinder formed outside the inner cylinder 9a by folding the lower end of the inner cylinder 9a upward and outward.
By folding the upper end of b again downward and outward, the outer cylindrical body 9C
is formed.

The bottom opening type double filter 9 formed by folding a long cylinder twice in the middle in this manner is installed in a filter box with the lower end of the outer cylinder 9C fixed to the upper surface of the partition plate 8. 3, and an inner cylindrical body 9a and an intermediate cylindrical body 9b
Between the filter frame 10, which is shaped like a basket from above, is located between the
is inserted, and the intermediate cylindrical body 9b is formed by folding the lower end of the inner cylindrical body 9a outward and upward along the lower end of the filter frame 10.

In the figure, reference numerals 11 and 11' denote left and right brackets that are attached to the left and right sides of the upper inner wall surface of the filter box 3, and the opposing surfaces of both brackets are provided with vertically symmetrically inclined vertical bars as shown in FIG. Guide grooves 11a and 11a are drilled therein, and inside both guide grooves 11a and 11a', both ends of an operating rod 12 fixed horizontally in the diametrical direction of the upper edge of the filter frame 10 are movable up and down, respectively. is inserted into.

12a and 12b connect the upper surface of the filter 9, specifically, the upper surface 9a' of the inner cylinder 9a and the upper edge folded portions 9b' of both the intermediate and outer cylinders 9a, 9c to the operating rod 12. Therefore, the entire filter 9 described above is housed inside the filter box 3 with its lower end fixed to the partition plate 8 and suspended from the operating rod 12.

Reference numeral 13 has an inner end inserted into the filter box 3 connected to the middle part of the operating rod 12 by a universal joint 14, and an outer end penetrating the lid 3a of the box 3 and projecting to the upper surface side, which is freely movable up and down. On the operating rod, 15 indicates a knob attached to the outer end of the operating rod 12.

16... are a plurality of springs stretched between the upper edge of the inner cylindrical body 9a and the inner upper wall surface of the filter box 3, and the entire inner cylindrical body 9a is connected to the springs 16.
The filter frame 10 is constantly stretched upward by the .
Both ends of the guide grooves 11a and 11a' are located in the middle of the left and right guide grooves 11a and 11a', which are always vertically long as shown in FIG.

Next, to explain the operation of the above-mentioned structure, after connecting the dust collecting hose to the suction port 7, when the motor 6 is started and the vacuum blower 5 is operated to suck dust, dust-containing air flows from the suction port 7 into the filter box 3. be sucked into.

Large dust with a heavy specific gravity contained in the sucked air hits the partition plate 8 and falls directly into the dust collection packet 4.

Further, fine dust having a light specific gravity passes through the ventilation hole 8a of the partition plate 8, enters the inside of the filter 9 from the inlet 9', and is collected there.

In addition, since the present invention uses a double-structured filter 9 with a collection area as wide as possible, dust collection is performed extremely efficiently, and even though the collection area of the filter 9 is large, the filter box 3 is It has the advantage that the entire system can be stored in a compact form.

If the above-mentioned dust collection operation is continued, the collected dust will adhere to the surface of the filter 9 and cause clogging, reducing the dust collection efficiency.

Therefore, dust removal work is carried out to dust off the dust adhering to the filter 9 into the dust collection packet 4 at regular intervals.
In the present invention, this work is carried out by manually moving the operating rod 13 projecting from the top surface of the filter box 3 up and down.

FIG. 3 shows the state when the operating rod 13 is pushed down. When the operating rod 13 is pushed down, the operating rod 12 is guided by the guide grooves 11a, 11a' of the bracket 11.11' and the state shown in FIG. Then, it descends while rotating in a clockwise direction.

When the operating rod 12 rotates downward, the inner cylindrical body 9a and the intermediate cylindrical body 9b are pulled by the tensioning action of the spring 16 and the filter frame 10 integrated with the operating rod 12, while the lower ends are fixed to the partition plate 8. Compressive force and twisting are applied to the outer cylindrical body 9C, causing wrinkles as shown in the figure.

Next, when the operating rod 13 is pulled up with the knob 15 as shown in FIG. Both of the guide grooves 11a and 11a of the bracket l-11.
, 11a, twists and wrinkles are applied by the operating rod 12 which moves upward while rotating counterclockwise in FIG. 2.

By moving the operating rod 13 up and down in this way, the cylinders 9a, 9b, and 9C of the filter 9 alternately expand and contract, and are also twisted left and right, so that the dust attached to the surface of the filter 9 is completely removed. The dust is brushed off to the dust collection packet 4 side, and the filter 9 can be unclogged.

In addition, the filter frame 10 mentioned above has each cylindrical body 9a, 9b, 9
At the same time as C is expanded and contracted, the inner cylindrical body 9a and the intermediate cylindrical body 9b
It is also possible to prevent close contact between the two.

As described above, according to the dust removal device of the present invention, a cylindrical filter with a dual structure of inside and outside, which is difficult to remove dust, can be alternately expanded and contracted and twisted by an extremely simple operation of moving the operating rod up and down. By adding it, it is possible to remove dust attached to both filter surfaces,
It has a much simpler structure than conventional backwashing dust removers, and has an excellent dust removal effect.It also has highly practical effects that are far superior to ordinary vibrating dust removers. It is suitable for cleaning the vacuum cleaners and various dust collectors shown in the figure.

[Brief explanation of the drawing]

Figure 1 is a front sectional view of a vacuum cleaner implementing the present invention, Figure 2 is a perspective view showing the main parts of the invention, and Figures 3 and 4 are main parts schematically showing the state during dust removal operation. FIG. 3...Filter box, 3a...
Lid body, 8...Partition plate, 9...Filter, 9'...Dust entry port, 9a...
Inner cylindrical body, 9b...Intermediate cylindrical body, 9C...
Outer cylinder body, 10...Filter frame, 11.11'
...Bracket, 11a, 11a'...
Guide groove, 12... Operating rod, 13...
Operating rod, 16...spring.

Claims (1)

[Scope of utility model registration request] An open-bottom inner-outside double structure in which the lower end of the inner cylinder with its top closed is folded upward to form an intermediate cylinder, and the upper end of the intermediate cylinder is folded back again to form an outer cylinder. A cylindrical filter is housed inside a filter box with the lower end of the outer cylindrical body fixed to the box side, and a cage-shaped filter is inserted from above between the inner cylindrical body and the intermediate cylindrical body of the filter. While the lower side of the filter frame is in contact with the inner side of the folded part of both cylinders, the left and right brackets with symmetrically inclined vertical guide grooves are installed facing the upper inner wall surface of the filter box. Both ends of an operating rod fixed to the upper edge of the filter frame are fitted into the left and right guide grooves so as to be movable up and down, and the operating rod is fitted with the upper surface of the inner cylinder, the intermediate cylinder, and the outer cylinder. The folded edge portions are respectively suspended, and the inner end of an operating rod, which is inserted through the lid of the filter box so as to be able to move up and down, is connected to the middle portion of the operating rod, and the upper surface of the inner cylinder body and the filter box are connected to each other. A spring is installed between the inner cylindrical body and the upper inner wall surface to constantly extend the inner cylindrical body upward so that both ends of the operating shaft are always located in the middle of the left and right guide grooves that are vertically bored. Features filter dust removal equipment such as dust collectors.