JP2850409B2 - Filter dust removal equipment for floor cleaning vehicles - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a filter dust removing device in a floor cleaning vehicle.

[Background Art] A floor cleaning vehicle, as disclosed in, for example, Japanese Utility Model Application No. 63-91073, rotates a circular main brush to remove dust and the like on the floor of a vehicle traveling path to a lower portion of the vehicle. It is configured to sweep up inside the dust box provided. Then, air containing fine floating dust generated when the brush sweeps up dust is sucked into an air flow passage extending inside the vehicle by a blower, and is filtered by a filter in a filter case arranged in the air flow passage. After filtering, clear air is discharged from the air outlet to the outside of the vehicle.

When the filter is frequently clogged due to repeated filtration of air and the filtration efficiency is reduced, the door on the back side of the filter case is opened and the filter is replaced.

[Problems to be Solved by the Invention] However, in the above-described configuration, a problem is raised in the filtering efficiency, and the focus is on dealing with a state in which the filter has reached the end of its service life. It does not refer to measures to remove dust adhering to the filter, always ensure good filtration efficiency, or extend the service life of the filter.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a filter dust removing apparatus for a floor cleaning vehicle, which always ensures a good filtering efficiency of a filter with a simple configuration and enables the filter to be used for a long time.

Means for Solving the Problems In order to achieve the above object, the invention according to claim 1 filters out polluted air including dust generated at the time of cleaning the main brush by a filter provided in an air flow passage, and filters the filter. In a dust removing device for a filter in a floor cleaning vehicle that vibrates by a shaker motor to separate dust adhering to the filter from the filter, the filter includes a filter portion formed in a wavy shape, and the filter portion being separated from the surroundings. And a panel filter with a supporting case,
A filter cover having a suction port for guiding air to a blower is provided on the downstream side of the panel type filter in the air flow passage, and the shaker motor is attached to the filter cover, and a filter cover is provided between the filter cover and the case. Is configured such that a vibration transmitting member for transmitting the vibration of the filter cover by the shaker motor to the case is interposed, and the filter is vibrated by transmitting the vibration from the shaker motor to the case.

According to a second aspect of the present invention, in the means of the first aspect, an elastically deformable seal member is provided between the filter cover and the case to seal between the periphery of the case and the filter cover. The seal member is elastically deformed following the vibration of the vibration transmission member while maintaining the airtightness between the case periphery and the filter cover.

[Operation] According to the above-described means, in the invention according to claim 1, vibration is transmitted to the case of the panel-type filter when the shaker motor is operated, and the vibration is transmitted to the filtering portion supported in a wavy manner in the case, and Dust adhering during filtration of the polluted air is separated from the filtration unit. Here, since the filtering portion is formed in a wave shape, the filtering efficiency is higher and the filter replacement interval is extended as compared with the case where the filtering portion is formed in a planar shape. In addition, since the vibration from the shaker motor is applied to the case capable of supporting the filtration unit from the periphery thereof and holding the filtration unit in a wave shape, the vibration of the case is efficiently distributed throughout the filtration unit. Then, the vibration of the shaker motor need only be transmitted to the case even though the filtering portion is formed in a wave shape, so that the structure for transmitting the vibration from the shaker motor to the filtering portion can be simplified.

Further, in a type in which a blower is provided downstream of the filter to protect the blower from polluted air, a shaker motor is attached to a filter cover used to communicate the filter with the blower. There is no need to prepare a special installation section. Further, the vibration transmitting member only needs to be interposed between the filter cover and the case, and the configuration of the vibration transmitting member is also simple.

In the invention according to claim 2, the suction airflow of the blower efficiently acts on the air flow passage due to the presence of the seal member provided between the filter and the filter cover. in this case,
If the sealing member is also used as the vibration transmitting member, the vibration does not efficiently act on the case because of the flexibility required for the sealing member. However, in the present invention, since the sealing member and the vibration transmitting member are separately provided, This eliminates the need for the vibration transmitting member to have the same flexibility as the seal member, so that a material that can efficiently transmit vibration can be selected, and sealing performance can be ensured and vibration transmission efficiency can be improved.

Embodiment An embodiment of the present invention will be described below in detail with reference to FIGS.

In FIG. 2, the floor cleaning vehicle sweeps dust in the corners of the floor of the vehicle traveling road toward the center by a side brush 1 provided at the front thereof, and the center of the floor by a main brush 2 provided at the bottom center. The dust of the section is swept up and collected in a dust box 3 provided forward in the traveling direction of the vehicle.

A panel-shaped filter 5 is arranged obliquely in a filter box 4 provided at the rear of the vehicle, and the filter box 4 has a suction port 6 formed by opening a lower portion thereof.
The main brush 2 communicates with the rear of the main brush 2. Also,
The filter 5 supports a later-described filter cover 7 that closes an upper portion thereof, and is connected to a storage chamber 10 through a ventilation path 9 through a suction port 8 provided through the cover 7.

Then, based on the negative pressure generated in the filter box 4 through the air passage 9 in accordance with the suction action of the blower 11 provided in the storage chamber 10, fine floating generated due to the sweeping of dust by the main brush 2. The polluted air containing dust flows into the filter box 4 through the suction port 6. After the polluted air is filtered by the filter 5, it flows downstream from the storage chamber 10 and is discharged from the exhaust port 12 to the outside of the vehicle.

Next, the filter 5 and its supporting mechanism will be described with reference to FIG. The filter box 4 is disposed above the dust pan 13 and an opening 15 is formed in the rear surface of the filter box 4. An opening / closing plate 16 is fixed to the rear surface of the filter box 4 with bolts B corresponding to the opening 15. By being worn, the opening 15 is always kept in a locked state by the opening / closing plate 16 at the solid line position. Then, the bolt B is released to unlock the opening / closing plate 16, and the lower end of the opening / closing plate 16 is rotated to a position shown by a two-dot chain line.

The filter 5 is formed by disposing a wavy filtering portion 18 in a square annular case 17 made of an iron plate so that the filter 5 is open at the top and bottom, and the outer surface of the case 17 of the filter 5 is filtered through a rubber seal 14b. It is supported by a support plate 19 which is arranged obliquely in parallel with the support 5. This support plate 19 is used for the filter 5
A communication opening 19a having a size corresponding to the size of the filter 5 and the dust pan 13 and the dust pan 13 is provided through the communication opening 19a.
And are in communication.

The lower end of the support plate 19 is rotatably supported by a bracket 20 provided at the lower portion of the filter box 4, and a sliding pin 22 projecting from a mounting piece 21 formed on the lower surface of the upper side of the support plate 19 is opened and closed. The support plate 19 is always held obliquely in contact with the inner wall of the guide groove 24 of the fixing member 23 fixed to the plate 16. When the opening / closing plate 16 is tilted to the position indicated by the two-dot chain line, the sliding pin 22 slides along the guide groove 24 of the fixing member 23, and the upper half of the filter 5 together with the support plate 19 is Protrude into.

The filter 5 supports the cover 7 via a pair of rubber seals 14a as reel members, and the cover 7 supports a shaker motor 25 on an upper surface thereof. A large vibration is generated by the eccentric weight 27 attached to the output shaft 26 of the motor 25 when the motor 25 rotates, and this vibration is transmitted to the cover 7. Then, on the back surface of the cover 7, the motor
The vicinity of the position corresponding to 25 is connected to the case 17 of the filter 5 by a connecting piece 28 as a vibration transmitting member made of hard urethane resin, and the vibration of the cover 7 is transmitted to the filter 5.

Now, the above-mentioned filter 5 filters the polluted air containing the floating dust by the suction action of the blower 11, and the fine dust accumulates on the inner surface of the filtering unit 18. Then, as the amount of dust accumulated on the filtering unit 18 increases, the filtering efficiency decreases. In this case, when the operation time of the blower 11 reaches a preset time, the motor
25 operates, and the vibration based on the action of the eccentric weight 27 is transmitted from the filter cover 7 to the filter 5 via the connecting piece 28. Therefore, dust adhering to the inner surface of the filter 18 of the filter 5 is shaken off and falls into the dust pan 13. Therefore, dust adhering to the filter 18 of the filter 5 is shaken off when reaching a certain amount, so that clogging of the filter 18 is avoided.

At this time, the rubber seal 14a interposed between the filter 5 and the cover 7 supports the cover 7 while elastically deforming with the vibration of the cover 7, thereby maintaining the airtightness between the cover 7 and the filter 5. The dust in the filter 5 does not escape to the cover 7 side. Similarly, the rubber seal 14b between the filter 5 and the support plate 19 absorbs the vibration of the filter 5, and the vibration is transmitted to the support plate 19 to prevent the mounting state of the filter 5 from malfunctioning.

To replace the filter 5, the bolt B is removed, the opening / closing plate 16 is opened, and the filter 5 projecting from the opening 15 may be removed from the support plate 19.

Further, by disposing the blower 11 on the downstream side of the filter 5, it is possible to prevent the air containing floating dust from passing through the blower 11 and impairing the function of the blower 11 due to the adhesion and deposition of the dust.

[Effects] As described in detail above, according to the first aspect of the present invention,
Since the filtering portion of the filter is formed in a wave shape, the filtering efficiency is higher than when the filtering portion is formed in a planar shape,
The filter replacement interval is extended. In addition, since the vibration from the shaker motor is applied to the case capable of supporting the filtration unit from the periphery thereof and holding the filtration unit in a wave shape, the vibration of the case can be efficiently transmitted to the entire region of the filtration unit. it can. Then, the vibration of the shaker motor need only be transmitted to the case even though the filter section is formed in a wave shape, so that the structure for transmitting the vibration from the shaker motor to the filter section can be simplified.

Further, in a type in which a blower is provided downstream of the filter to protect the blower from polluted air, a shaker motor is attached to a filter cover used to communicate the filter with the blower. There is no need to prepare a special installation section. Further, the vibration transmitting member only needs to be interposed between the filter cover and the case, and the structure of the vibration transmitting member can be simplified.

According to the second aspect of the present invention, the presence of the seal member provided between the filter and the filter cover allows the suction airflow of the blower to efficiently act on the airflow passage. Further, since the seal member and the vibration transmitting member are separately provided, there is no need to provide the vibration transmitting member with flexibility as high as that of the seal member, and a material capable of efficiently transmitting vibration can be selected. The performance can be secured and the vibration transmission efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a floor cleaning vehicle, FIG. 2 is a sectional view showing a filter and a shaker motor and a mounting structure thereof, and FIG. 3 is a sectional view of the filter and a shaker motor. A main brush 2, a panel-type filter 5, a filter cover 7, a suction port 8, a blower 11, a rubber seal 14a as a sealing member, a case 17, a filtering section 18, a connecting piece 28 as a vibration transmitting member, and a shaker motor 25.

Claims (2)

(57) [Claims] 1. A filter provided in an air passage for filtering polluted air containing dust generated during cleaning of a main brush,
In a dust removing device for a filter in a floor cleaning vehicle that separates dust attached to the filter from the filter by vibrating the filter by a shaker motor, the filter includes: a filter formed in a wavy shape; and And a case supporting the filter from the periphery thereof, and a filter cover provided with a suction port for guiding air to a blower is provided on a downstream side of the panel type filter in the air flow passage. Attaching a shaker motor, interposing a vibration transmitting member for transmitting the vibration of the filter cover by the shaker motor to the case between the filter cover and the case, and transmitting the vibration from the shaker motor to the case. Fill in a floor cleaning vehicle configured to vibrate the filtration unit Dust removal device. 2. The device according to claim 1, wherein said filter cover and said case are provided between said filter cover and said case.
An elastically deformable seal member for sealing between the case periphery and the filter cover is provided, and the seal member elastically deforms while keeping the airtightness between the case periphery and the filter cover following the vibration of the vibration transmission member. Item 3. A dust removing device for a filter in a floor cleaning vehicle according to Item 1.