JP3926337B2 - Dust collector and dust collection work vehicle - Google Patents

Description

The present invention relates to a dust collector and a dust collection work vehicle using lift obtained by changing the airflow into a spiral shape and hitting the bottom portion to create an updraft unlike a suction dust collector, and in particular, fallen leaves and golf courses. It is suitable for collecting dead leaves.

The conventional dust collector is configured to suck an object and separate the air and the object with a filter. For this reason, if the object becomes full in the volume, the work must be interrupted or stopped due to clogging of the filter.
In addition, in order to obtain a suction force, the discharge body has to be relatively narrow and tubular, and in order to suck a relatively large object such as a fallen leaf, an extremely high output motor is required. .
Japanese Patent Publication 4-19916

According to the present invention, the pipe is made into an inner / outer duplex, and air is blown out from the lower end between the inner and outer pipes, and lift is generated in the inner pipe by the air.
In the structure of the present invention, when the inner tube is made thicker, the outer tube becomes thicker accordingly, and there is a problem that the apparatus becomes larger.

  In order to remove relatively large garbage such as fallen leaves, the present invention makes the apparatus as small as possible while increasing the size of the discharge body, and eliminates the need for a filter and is used for large garbage. Another problem is to obtain a dust collector that can be used continuously for a long time.

In the dust collector of the present invention, an outer wall is provided at a lower portion of a hollow discharge body having an upper end and a lower end opened, the lower portion of the outer wall is bent toward a lower edge of the discharge body, and an upper portion of the outer wall and a side wall of the discharge body are provided. A clogging plate is provided between them, a blower pipe is connected between the lower part of the discharger and the outer wall, and blades that rotate the wind are provided on the inner wall of the blower pipe .
With this configuration, the wind that flows between the exhaust body and the outer wall from the blower pipe is guided to the bent portion of the lower edge of the exhaust body and enters the exhaust body, and the object is lifted by the lift generated in the exhaust body. Blow out from.
According to a second aspect of the present invention, the discharge body is a box having a rectangular cross section.
According to a third aspect of the present invention, the dust collector of the first or second aspect is attached, and a motor for supplying pressurized air to the dust collector is mounted to form a dust collecting work vehicle.

According to this invention, the wind that flows downward from the blower pipe is spiraled by the blades provided in the blower pipe , flows into the space between the discharger and the outer wall, and then faces obliquely upward at the lower bent portion of the outer wall. Changes to the discharger and rises upward. The object is lifted by the lift generated at this time, and discharged from the upper end opening. Collect things by connecting a bag, net, etc. to the top opening. Since the wind flowing through the blower pipe is a spiral flow , a stronger lift can be obtained.
According to the invention of claim 2 , since the discharge body has a rectangular cross section, it can be formed wide and is suitable for collecting / removing fallen leaves on a street or collecting / removing fallen leaves on a golf course.
And the dust collector of this invention does not need a filter, and there is no possibility of clogging, and continuous use for a long time is possible.
The lift force can be changed depending on the strength of the wind flowing in from the blower tube and the size of the inner diameter of the blower tube.

In the figure, the discharger 1 has a rectangular box shape with a flat cross section, the upper part of which is curved to facilitate collection of dust, and the upper end is opened to serve as a discharge port 2. Moreover, the lower end is opened and serves as the inlet 3.
In the lower part of the discharge body 1, an outer wall 4 is provided along the long edge side wall. Between the upper edge of the outer wall 4 and the side wall of the discharge body 1 and between both end edges of the outer wall 4 and the discharge body 1 are closed, and an air inflow chamber 5 is formed between the discharge body 1 and the outer wall 4. . The lower portion of the outer wall 4 is a bent portion 6 bent toward the lower edge side of the discharge body 1 so that the wind descending the blower pipe 7 flows into the discharge body 1. The angle of the bent portion is suitably about 45 to 60 degrees at the inner angle.
The air inflow chamber 5 is connected to an end of a blower pipe 7. The blower tube 7 is provided with a spiral blade 8 on the inner side, and rotates the wind descending the blower tube 7.

In the above, the wind sent from the blower pipe 7 is given a rotational force by the action of the spiral blade 8 in the blower pipe 7, flows into the air inflow chamber 5 as a spiral flow, and is guided to the bent portion 6 of the outer wall and discharged. It goes to the inlet 3 of the body 1 and rises in the discharge body.
At this time, negative pressure is generated in the vicinity of the inflow port 3, the object in the vicinity of the inflow port 3 is sucked in, and is directed to the discharge port 2 by the lift of the air rising in the discharge body, facing the discharge port, It can be collected on the net.

  In this embodiment, since the discharge body 1 has a flat rectangular cross section, a relatively wide discharge body can be configured with a relatively small air pressure. Therefore, it is suitable for removal of fallen leaves over a wide area such as removal of fallen leaves on a street or cleaning of a golf course.

In the embodiment of the present invention, in addition to the mode in which the operator holds the motor or engine for holding the exhaust body in the hand and supplying the compressed air to the blower pipe on the back, the exhaust body is attached to the work vehicle or carriage. Or the aspect which installs an engine in a work vehicle or a trolley | bogie can be considered. In FIG. 5, reference numeral 11 is a work vehicle, 12 is an engine for supplying pressurized air, 13 is a dust collector of the present invention, and 14 is a net for collecting dust.
The dust collector of the present invention can be used in various ways as a dust collector.

  The present invention is implemented in the form as described above, and can recover and remove large-sized garbage with a simple structure without the risk of clogging, and has industrial applicability. .

It is sectional drawing of this invention embodiment. It is also a front view. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1. It is a sectional view of a blower tube similarly. It is the schematic of the dust collection work vehicle carrying the apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Exhaust body 2 Discharge port 3 Inflow port 4 Outer wall 5 Air inflow chamber 6 Bending part 7 Blower pipe 8 Spiral blade
11 Work vehicle 12 Engine 13 Dust collector 13 Net

Claims (3)

An outer wall is provided at the lower part of the hollow discharge body whose upper and lower ends are open,
Bending the lower part of the outer wall toward the lower edge of the discharge body,
Between the upper part of the outer wall and the side wall of the discharge body, a blocking plate is provided,
A blower pipe is connected between the lower part of the exhaust body and the outer wall;
Provided on the inner wall of the blast pipe is a blade that rotates the wind,
The wind that flows between the discharge body and the outer wall from the blower pipe is guided by the lower edge bent portion of the discharge body and enters the discharge body, and the object blows out from the upper end of the discharge body by the lift generated in the discharge body. did,
Dust collector The dust collector according to claim 1, wherein the discharge body has a box shape with a rectangular cross section. A dust collection work vehicle equipped with the motor or engine to which the dust collector of claim 1 or 2 is attached and pressurized air is supplied to the dust collector.

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