JPH1157366A - Dust shaking device for filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently shake the entire part of a filter and to surely shake off dust. SOLUTION: A vibration generator 18 is turnably supported via a vibration isolating rubber 22 at the ceiling wall 19 of a hopper chamber 4 of a road surface cleaning car. The centroid position of a vibration generator 18 is set near the center of a shaker motor 24 and an exciting section 27 is disposed near the same. The opposite side of the exciting section 27 is provided with a stopper 29 and the filter 7 is held in a home position. The exciting section 27 is vibrated in a direction approximately perpendicular to the contact surface of the filter 7 by a shaker motor 24 and the vibration generator 18 is oscillated like a pendulum by the repulsive force of the filter 7 accompanying the vibration and the filter 7 is repetitively hammered by the exciting section 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for shaking off dust adhering to a filter in a cleaning car or the like.

[0002]

2. Description of the Related Art Conventionally, the following dust removing devices are known. First conventional example: a device in which a vibration generator is installed at the center of a filter cover, and a vibration transmitting member is interposed between the vibration generator and the filter (Japanese Patent Application Laid-Open No. 3-146109). Second conventional example: a device in which a filter is slidably supported on a mounting portion, a vibration generator is installed on the surface of the filter, and the entire filter is repeatedly slid with vibration energy and hit against the mounting portion (Japanese Patent Laid-Open No. Hei 5- 154320). Third conventional example: An apparatus for rotating and moving a brush in contact with a filter to scrape dust (Japanese Patent Laid-Open No. 5-161815).

[0003]

However, the conventional dust removing apparatus has the following problems. First Conventional Example: Vibration is not easily transmitted to the entire area of the filter, dust is likely to remain in corners, and the center of the filter may be damaged early. Second conventional example: The support structure of the filter is complicated, the sliding portion and the contact portion are easily worn and damaged, not only generating large noise, but also wasteful in that vibration energy is consumed for sliding the filter. Third conventional example: There is a problem that a complicated brush driving mechanism is required, the manufacturing cost of the apparatus is high, and the filter is easily damaged by the brush contact.

An object of the present invention is to provide a simple and highly durable apparatus which can efficiently excite the entire filter and reliably shake off dust.

[0005]

In order to solve the above-mentioned problems, a dust removing apparatus according to the present invention comprises a vibration generator which is rotatably supported on a support distant from the filter, and which applies vibration to the filter. The vibration part is provided in the vibration generator, the vibration generator is swung by the repulsive force of the filter, and the filter is repeatedly hit by the vibration part.

Further, in the dust removing device of the present invention, a vibrating portion is provided in the vicinity of the center of gravity of the vibration generator so that high-energy vibration can be generated by effectively utilizing the weight of the vibration generator. Item 2).

Further, in order to largely swing the vibration generator by the repulsive force of the filter, a shaker motor for vibrating the vibrating portion in a direction substantially perpendicular to the contact surface of the filter is installed in the vibration generator. 3).

In this case, it is preferable to provide a stopper for holding the filter in a fixed position on the opposite side of the vibrating portion so as to suppress the loss of vibration and hitting energy (claim 4).

In order to improve the durability of the apparatus, it is desirable to provide an anti-vibration rubber at the pivot point of the vibration generator so that vibration wear does not occur at the mounting portion of the vibration generator. .

[0010] In particular, in order to improve the dust removal efficiency of a filter mounted on a cleaning car, the dust removing apparatus of the present invention is a cleaning car provided with a filter above the hopper chamber. The vibrator is rotatably supported on the ceiling wall of the vibrator, and a vibrator for applying vibration to the filter is provided near the center of gravity of the vibrator, and the vibrator is swung by the repulsive force of the filter. Is configured to repeatedly hit the filter.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention applied to a road cleaning vehicle will be described below with reference to the drawings. As shown in FIG. 1, the road cleaning vehicle travels on a vehicle body 1, sweeps dust on a road surface with a side brush 2, sweeps up and collects the dust with a main brush 3 into a hopper chamber 4, and contaminates the hopper chamber 4. The air is sucked by the blower 5 through the duct 6, dust in the polluted air is removed by the filter 7, and when the dust adheres to the filter 7 and the performance is reduced, the suction from the duct 6 is stopped or weakened. In this state, dust adhering to the filter 7 is shaken off by the dust removing device 8.

As shown in FIGS. 2 and 3, a partition 10 having a vent hole 10a is provided obliquely above the hopper chamber 4, and a filter 7 is provided with a rubber packing 11 on the partition 10.
Is placed via. The filter 7 has a filter paper 13 stretched inside a rectangular frame 12 covering the ventilation hole 10a, and the frame 12 is sandwiched between the partition wall 10 and two pressers 14 by bolts 15 and wing nuts 16. Wearing is fixed.

The dust removing device 8 includes a vibration generator 18 that excites the filter 7 from the rear side. A bracket 20 to which a vibration generator 18 is attached is fixed to a ceiling wall 19 of the hopper chamber 4 which is separated upward from the filter 7. The vibration generator 18 includes a frame 21 having an upward U-shape, and an upper end of the frame 21 is rotatably supported by a bracket 20 via an anti-vibration rubber 22. A shaker motor 24 having an eccentric weight 23 and a weight 25 are provided at the lower end of the frame 21, and the position of the center of gravity of the vibration generator 18 is set near the center of the shaker motor 24.

In the vicinity of the position of the center of gravity, a vibrating portion 27 for applying high-frequency vibration of a shaker motor 24 to the filter 7 is provided on the front surface of the lower end of the frame 21 so as to be in vertical contact with the rear side surface of the frame 12. . Also, the vibration unit 2
A stopper 29 made of a highly rigid material such as metal for holding the filter 7 in a fixed position is provided on the front wall 28 of the hopper chamber 4 on the opposite side of the hopper chamber 7. The dust removing device 8 uses the shaker motor 24 to vibrate the vibrating unit 27 in a direction substantially perpendicular to the contact surface of the filter 7, and repels the vibration generator 18 by the repulsive force of the filter 7 due to the vibration. The filter 7 swings obliquely back and forth around the center 22 and the filter 7 is repeatedly beaten by the vibration unit 27.

According to the dust removing device 8 having the above-described structure, the vibrating section 27 is provided near the position of the center of gravity of the vibration generator 18. Can act on the filter 7. Since the shaker motor 24 vibrates the vibrating section 27 in a direction substantially perpendicular to the contact surface of the filter 7, the repulsive force of the filter 7 is increased, whereby the vibration generator 18 swings greatly, and the vibrating section 27 is moved. Beat the filter 7 hard. Since the filter 7 is held at a fixed position by the stopper 29 on the opposite side of the vibrating section 27, the tapping energy efficiently spreads to the filter paper 13 without being wasted by the movement of the filter 7. Therefore, the whole of the filter 7 can be efficiently excited by the synergistic action of the high frequency vibration and the repeated tapping, and the dust attached to the filter paper 13 can be reliably shaken off.

Further, in this road cleaning truck, since the dust removing device 8 is configured to excite the filter 7 by an external force, the filter 7 and the vibration generator 18 are separately provided in the hopper chamber 4. By installing the filter, the structure of the filter 7 can be simplified, the vibration generator 18 can be easily assembled,
And maintenance such as inspection of the motor 24 can be easily performed. In addition, the vibration generator 18 is
Since only the filter 7 comes into contact with the filter 7, wear points due to vibration can be minimized, and the durability of the filter 7 and the vibration generator 18 can be improved. In particular, since the vibration proof rubber 22 is provided at the rotation fulcrum of the vibration generator 18, it is possible to prevent the vibration wear at the mounting portion of the vibration generator 18 beforehand.

FIGS. 4 and 5 show another embodiment of the dust removing apparatus according to the present invention, and the same or corresponding members as those in the above embodiment are denoted by the same reference numerals as those in FIG. In the dust removing device 8 shown in FIG. 4, the vibration generator 18 is installed above the filter 7, and the upper end of the frame 21 is attached to the bracket 2 of the ceiling wall 19 via the vibration-proof rubber 22.
It is rotatably supported at zero. The frame 21 is provided with a shaker motor 24 having an eccentric weight 23 and a weight 25, and the center of gravity of the vibration generator 18 is set slightly lower than the center of the shaker motor 24.

At the lower end of the frame 21 near the position of the center of gravity, there is provided a vibrating section 27 for applying high-frequency vibration of the shaker motor 24 to the filter 7 via the metal plate 31.
The abutment 31 is fixed to the presser foot 14 of the filter 7 with a bolt 32, and the shaker motor 24 causes the vibrating unit 27 to vibrate in a direction substantially perpendicular to the contact surface of the abutment 31, and vibrates by a repulsive force from the filter 7 side. The generator 18 swings up and down around the anti-vibration rubber 22, and the vibrating section 27 repeatedly strikes the center of the abutment 31. The frame 21 is rotatably supported by a vibration-proof rubber 22 at the rear end of the upper bent portion 21a in order to bring the vibrating portion 27 into contact with the abutment 31 substantially vertically.

Therefore, the dust removing device 8 also efficiently excites the entire filter 7 by the synergistic action of the high frequency vibration and the repeated tapping, similarly to the previous embodiment, and the filter paper 1
The dust adhering to 3 can be reliably shaken off. However, in the case of this embodiment, since the rubber packing 11 between the filter 7 and the partition 10 absorbs a part of the vibration and the tapping energy, the output of the vibration generator 18 needs to be set slightly higher. .

In the dust removing device 8 shown in FIG. 5, the vibration generator 18 is rotatably supported by the bracket 20 of the ceiling wall 19 via the pin 34 at the rear end of the frame 21. The filter 7 is disposed below the partition 10 via a rubber packing 11, and is fixed between the partition 10 and the stopper 29 by a bolt 15 and a wing nut 16. A presser foot 14 and an abutment 31 are arranged vertically and horizontally on the upper surface of the filter 7, and are fixed to a stopper 29 with a bolt 35 and a wing nut 36. Then, the vibrating portion 27 of the vibration generator 18 comes into contact with the center of the abutment 31 from a substantially vertical direction, so that high frequency vibration and repeated tapping act on the filter 7 synergistically.

According to this configuration, since the rubber packing 11 is provided on the vibrating portion 27 side of the filter 7, FIG.
Unlike the device of the above, there is no possibility that the vibration and the tapping energy are attenuated by the rubber packing 11. Further, since the filter 7 is held at a fixed position by the stopper 29 on the opposite side of the vibrating section 27, the filter 7 can be efficiently spread over the entire area of the filter paper 13 without wasting vibration and hitting energy. There is an advantage that the dust removing effect can be improved in the dust removing device 8 of the type in which the generator 18 is provided above the filter 7.

It should be noted that the present invention is not limited to a road cleaning vehicle, but may be applied to a filter dust removing device in various machines for processing powder and granular materials such as a dust collector and a milling machine. In a road cleaning vehicle, the shape and configuration of each part may be appropriately changed without departing from the spirit of the present invention, such as mounting a vibration generator on the rear wall of the hopper chamber.

[0023]

As described above in detail, according to the first aspect of the present invention, the vibration is applied to the filter from the outside by the vibrator of the vibration generator, and the vibration generator is swung by the repulsive force of the filter.
Since the filter is configured to be repeatedly beaten by the vibrating section, the entire filter can be efficiently excited, dust can be reliably shaken off, and the device can be configured simply and robustly.

According to the second aspect of the present invention, since the vibrating portion is provided near the position of the center of gravity of the vibration generator, there is an effect that high-energy vibration can be generated by effectively utilizing the own weight of the vibration generator.

According to the third aspect of the present invention, since the vibrating portion is vibrated in the direction substantially perpendicular to the contact surface of the filter by the shaker motor, the repulsive force of the filter is strengthened, and the vibration generator is largely swung. The effect is that the filter can be strongly beaten.

According to the fourth aspect of the invention, since the filter is held at a fixed position by the stopper on the side opposite to the vibrating section, there is an effect that vibration and loss of tapping energy can be suppressed.

According to the fifth aspect of the present invention, since the vibration isolating rubber is provided at the pivot of the vibration generator, there is an effect that the vibration abrasion at the mounting portion of the vibration generator can be prevented.

According to the sixth aspect of the present invention, in the cleaning car, the vibration generator is rotatably supported on the ceiling wall of the hopper room remote from the filter, so that the filter and the vibration generator are separately provided in the hopper room. By installing the filter, the structure of the filter can be simplified, the vibration generator can be easily assembled, and the maintenance thereof can be easily performed.

[Brief description of the drawings]

FIG. 1 is a cutaway side view of a main part of a road cleaning truck showing an embodiment of the present invention.

FIG. 2 is a sectional view of a hopper chamber showing a filter dust removing device in the cleaning vehicle of FIG. 1;

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

FIG. 4 is a sectional view of a hopper chamber showing another embodiment of the dust removing device.

FIG. 5 is a sectional view of a hopper chamber showing still another embodiment of the dust removing device.

[Explanation of symbols]

4. Hopper room, 7. Filter, 8. Dust removal device,
18. Vibration generator, 19: Ceiling wall, 22: Anti-vibration rubber, 24: Shaker motor, 27: Vibration unit, 29
・ Stopper.

Claims (6)

[Claims] 1. A vibration generator is rotatably supported on a supporting member distant from the filter, and a vibration generator for applying vibration to the filter is provided on the vibration generator, and the vibration generator is swung by the repulsive force of the filter. A filter dust removing device configured to repeatedly beat the filter by a vibrating unit. 2. The filter dust removing device according to claim 1, wherein the vibrating section is provided near the center of gravity of the vibration generator. 3. A filter dust removing device according to claim 1, wherein a shaker motor for vibrating the vibrating portion in a direction substantially perpendicular to a contact surface of the filter is provided in the vibration generator. 4. The filter dust removing device according to claim 3, further comprising a stopper for holding the filter at a fixed position on the opposite side of the vibrating section. 5. A filter dust removing device according to claim 1, wherein a vibration isolating rubber is provided at a rotation fulcrum of the vibration generator. 6. A cleaning car provided with a filter in an upper part of a hopper chamber, wherein a vibration generator is rotatably supported on a ceiling wall of the hopper chamber separated from the filter upward, and a vibrating part for applying vibration to the filter is provided. A filter dust removing device provided near the center of gravity of the vibration generator, wherein the vibration generator is swung by the repulsive force of the filter, and the filter is repeatedly hit by the vibrator.