JPH09843A - Dust collector - Google Patents

Abstract

PURPOSE: To effectively perform the removal of dust from a filter by a simple structure without damaging a filter by providing a dust collector with a dust removing mechanism shaking the ring part making a round within a filter by the operation of an arm part. CONSTITUTION: The dust removing arm 14 attached to a tank cover 4 is a rod-shaped part having a cross-shaped cross section consisting of an arm part 15 having a holding cylinder 4a loosely inserted therein and threaded with a lever 17 on the upper surface of the tank cover 4 and the ring part 16 integrally formed along with the arm part 15 and making a round in a tank 2 between a suction unit 5 and a filter 13 in a non-contact state and made of a synthetic resin. When the lever 17 is revolved, the dust removing arm 14 shakes the arm part 15 and the ring part 16 left and right around a revolving part 15a supported by the holding cylinder 4a to alternately strike the inner surface of the filter 13 left and right. At this time, since the ring part 16 has the form contacting with the bag-shaped filter 13 long in the peripheral direction thereof, the dust bonded to the filter 13 can be shaken off without damaging the filter 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collector capable of sucking water, dust, and relatively large dust such as small stones and used for business purposes.

[0002]

2. Description of the Related Art The above dust collector is provided with a dust removing mechanism for removing dust adhering to a filter. As this dust removing mechanism, as disclosed in, for example, Japanese Utility Model Publication No. 51-27649, a T-shaped body having a vertical rod that comes into contact with a filter at the tip is attached to a rotating shaft at the center of the tank, and the T-shaped body is also provided. Is pressed against a cam provided on the bearing of the rotary shaft, and the rotary shaft is rotated by operating the lever, so that the T-shaped body is reciprocally moved in the radial direction while being rotated by the cam, hitting the filter, and dust attached to the filter. Those who get rid of are known.

[0003]

However, in the above dust removing mechanism, since the vertical rod has a small number of contact portions with the filter, sufficient dust removing effect cannot be obtained unless the lever is rotated many times. In addition to the troublesome operation, there is a risk that the vertical rod may get caught in the filter and damage the filter. Further, when the filter is clogged, the filter contracts. In this case, however, the filter cannot be supported entirely because the filter can be supported only in a small area where the vertical rod comes into contact with the filter. Further, the structure is complicated only by the dust removing mechanism, the number of parts is large, and the cost is increased.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention provides a dust collector equipped with a simple structure having a dust removing mechanism which is easy to operate and has a good dust removing effect without fear of damaging the filter. The dust removing mechanism is a ring-shaped portion that goes around the inside of the filter, and is extended from the ring-shaped portion and is supported by one of the upper and lower housings and protrudes to the outside of the housing. By operating the protruding portion, It is characterized in that it is constituted by an arm portion for swinging the ring-shaped portion.

[0005]

When the ring-shaped portion is swung by the operation of the arm portion, the ring-shaped portion strikes the inner surface of the filter to remove dust. At this time, since the ring-shaped contact is made with the filter, the abutting portion is large, a suitable dust removing effect can be obtained by a simple operation in a short time, and the filter is not likely to be caught. Moreover, even if the clogged filter contracts, the ring-shaped part prevents further contraction.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a dust collector 1 has a barrel-shaped tank 2 and a tank cover 4 integrated with an upper cowling 3 which is fitted into an upper opening of the tank 2. An intake unit built in between the cowling 3 and the tank cover 4. 5 includes a plurality of suction fans 6,
While a motor 7 having 6 ... Is provided, a float portion 8 is arranged below the suction fan 6. The float part 8 regulates the amount of water when sucking in water,
When the float 9 in the float cage 10 rises with the amount of sucked water and reaches the inflow port 11, further suction of water is blocked. Further, the sucked air is sent to the air feeding passage 3a in the cowling 3 by the suction fan 6 through the inflow port 11, and is discharged from the exhaust port 3b on the lower surface of the cowling 3. Further, between the tank cover 4 and the tank 2, an opening edge portion of a cloth filter 13 for blocking the suction port 12 of the tank 2 and the float portion 8 from each other in a bag shape is sandwiched. Air and water sucked in by hoses and nozzles can be filtered here.

A dust removing arm 14 is attached to the tank cover 4. The dust removing arm 14 has a holding cylinder 4a vertically formed on the tank cover 4 and is loosely inserted. As shown in FIGS. 2 and 3, an arm portion 15 to which a lever 17 is screwed on the upper surface of the tank cover 4 and the arm portion 15 thereof. It is a rod-shaped member having a cross-shaped cross section, which is formed integrally with the portion 15 and includes a ring portion 16 which makes a non-contact circuit between the intake unit 5 and the filter 13 in the tank 2 and is made of synthetic resin. Further, the lever 17 is provided with an arm portion 15 protruding from the tank cover 4.
A large-diameter fitting cylinder 17a fitted to the tip of the arm is provided. The fitting cylinder 17a and the tip of the arm portion 15 are fitted to each other in a cross-shaped cross section. When fitted and screwed with the screw 17b, it is integrated with the arm portion 15 and the tank cover 4 prevents it from coming off downward. Further, the insertion portion of the arm portion 15 into the holding cylinder 4a is a rotating portion 15a having a circular cross section so that the arm portion 15 maintains airtightness. Therefore dust removal arm 1
With reference numeral 4, when the lever 17 is rotated, the arm portion 15 and the ring portion 16 swing left and right around a rotating portion 15a pivotally supported by the holding cylinder 4a. 18,18 ...
Are reinforcing ribs provided at equal intervals on the arm portion 15 and the ring portion 16, and 19 and 19 are provided between the left and right connecting portions of the ring portion 16 with the arm portion 15 and an intermediate portion of the arm portion 15. On the other hand, one side 20 is a circular frame that is placed between the float portion 8 and the bottom of the filter 13 and maintains the bag shape of the filter 13.

In the dust collector 1 constructed as described above, when the lever 17 of the dust removing arm 14 is gripped and is swung to the left and right, the ring portion 16 as shown by the chain double-dashed line in FIG.
Swings greatly to the left and right, so that the inner surface of the filter 13 is alternately hit to the left and right, and the dust adhering to the filter 13 can be removed. Especially the ring part 1
Since 6 is in the form of contacting the bag-shaped filter 13, the contact area with the inner surface of the filter 13 is long in the circumferential direction, and the dust removing effect is suitable, and in addition, the filter 13 is caught. There is no risk of damage. Further, even if the filter 13 is clogged and tries to shrink during suction, the ring portion 16 together with the frame 20 can prevent the shrinkage. Further, the swinging of the ring portion 16 can be performed by operating the lever 17 protruding to the outside of the tank cover 4, so that dust can be removed without opening the tank cover 4 one by one. As described above, according to the dust collector of this embodiment, it is possible to effectively remove dust from the filter with a simple structure and a simple operation. In the above-described embodiment, the cross-sectional shape of the ring portion 16 and the arm portion 15 has a cross shape, so that the dust-removing arm 14 can be easily molded and the overall weight can be reduced, and sufficient strength can be obtained. However, this cross-sectional shape is not limited to the above-mentioned embodiment, and a circular cross-section,
Other shapes such as a U-shaped cross section may be used. Further, various design changes such as elimination of the reinforcing portion 19 and molding of the arm portion and the ring portion as separate bodies are possible.
Although one ring portion is provided, one or more ring portions may be connected below the ring portion so that the upper and lower portions of the filter can be hit by the upper and lower ring portions.

[0009]

As described above, according to the present invention, by adopting a dust removing arm having a simple structure including a ring-shaped portion and an arm portion,
There is no need to open the tank cover, you can hit a large area with a simple operation in a short time, and you can effectively remove dust from the filter. In addition, there is no risk of filter breakage, and it is possible to prevent the clogging of the filter from shrinking.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a dust collector.

FIG. 2 is an explanatory diagram of a dust removing arm.

FIG. 3 is an explanatory diagram of a dust removing arm.

[Explanation of symbols]

1 ... Dust collector, 2 ... Tank, 3 ... Cowling, 4 ...
・ Tank cover, 5 ・ ・ Intake unit, 8 ・ ・ Float part, 12 ・ ・ Suction port, 13 ・ ・ Filter, 14 ・ ・ Dust removal arm, 15 ・ ・ Arm part, 16 ・ ・ Ring part, 17
..Lever, 20..frame

Claims (1)

[Claims] 1. A filter disposed between the upper housing having an intake unit and a lower housing having a suction port in a bag shape to shut off the filter from each other, and strikes the filter to remove dust adhering to the filter. A dust collector provided with a dust removing mechanism, wherein the dust removing mechanism is a ring-shaped portion that goes around the inside of the filter, and is extended from the ring-shaped portion and is supported by either one of the upper and lower housings and is outside the housing. The dust collector is characterized in that the dust collector is configured to have an arm portion that protrudes to an upper portion and swings the ring-shaped portion by operating the protruding portion.