JPH0745626Y2 - Solidifying material spreader for soft ground improvement - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is directed to the scattering of dust generated when a solidifying material for ground improvement is sprayed to a predetermined place to improve soft ground, and to the dust collector. The present invention relates to a solidifying material spreader for soft ground improvement capable of preventing clogging of filter cloth.

[Prior Art] Conventionally, a solidifying material spreader for soft ground improvement of this type is provided with a single dedusting curtain below the cyclone body of a cyclone type spreading machine, and the dedusting curtain covers the chute part of the spreading machine. Further, it has a structure in which a suction tube for dust collection is inserted into the dust removal curtain.

[Problems to be solved by the invention] The cyclone-type spreader described above carries the solidifying material conveyed from the ground-improving solidifying material supply device to the cyclone-type spreader, and spreads it on the ground to be sprayed for ground improvement work. However, if the sprayed ground has irregularities, there is a problem that dust is ejected from the gap between the ground and the curtain and scattered to deteriorate the surrounding environment.

Also, inside the dedusting curtain, a large amount of dust rises due to the air conveyed by the solidifying material, and a large amount of dust is sucked because it is directly sucked by the suction pipe for dust collection, and the dust collector filter cloth is clogged and the hopper is full. However, there is a problem that the dust collecting ability is reduced in a short time.

[Means for Solving the Problem] The present invention solves the above-mentioned problem of dust scattering at the time of spraying the solidifying material.

In order to solve the above problems, the present invention provides a cyclone-type solidifying material spreader with a double dust-removing curtain having different lengths at the lower part of the main body of the spreader, and a weight attached to each lower end thereof. The dust collecting suction pipe is provided between the dedusting curtains, and the dust collecting suction pipe is connected to the dust collector to form a solid ground improving solidifying material spreader.

[Embodiment] An embodiment of the solidifying material spreading machine for soft ground improvement of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 is a cyclone main body of a cyclone type spraying machine, an upper part of the cyclone main body 1 is formed of a double cylinder, and an outer cylinder 4 is made of a solidifying material conveyed by a tank truck. A solidifying material feeding pipe 5 to be carried into the cyclone is provided, and a filter cloth 3 for discharging a part of the air carried together with the solidifying material to the atmosphere is provided at the upper end portion of the inner cylinder 4b.

The hopper 9 and chute 9a at the bottom of the cyclone body 1 are doubly covered with a dust-removing curtain of different length. The dust-removal curtain is composed of an inner dust-removal curtain 7 and an outer dust-removal curtain 8, the distance between the inner dust-removal curtain 7 and the outer dust-removal curtain 8 is 10 to 15 cm, and the length of the inner dust-removal curtain is Form about 15 cm shorter than the external dust removal curtain.

The weight rings 10 and 11 for constantly lowering the curtain are attached to the bottom edges of both dust-removing curtains. Further, the suction pipe 6 for dust collection is inserted into the gap between the inner dust removal curtain and the outer dust removal curtain, and the suction pipe 6 for dust collection is connected to a dust collector (not shown). The suction pipe 6 has a diameter of 100 m / m, and the dust collector has a capacity of 20 m ³ / min and a diameter of about 200 mmHg. In the drawing, 2 is a hanging hand.

[Operation / Effect of the Invention] Since the present invention is as described above, the spreader is hung and installed on a predetermined ground by a hanging hand.

At that time, the weight ring 10 provided on the outer dust removing curtain 8 is held so as to be constantly in contact with the ground, and the weight ring 11 of the inner dust removing curtain 7 is held higher than the ground.

The solidified material carried in from the tank truck (not shown) in that state enters the cyclone main body 1 through the solidified material input pipe 5, and is scattered on the ground through the chute 9. Part of the carrier air is discharged into the atmosphere through the filter cloth 3 of the inner cylinder 4b. On the other hand, the solidified material scattered on the ground flies up together with most of the air for transportation, and the coarse powder collides with the internal dedusting curtain 7 and falls on the ground. The fine dust is sucked by the suction pipe 6 through the gap between the outer dust-removal curtain 8 and the inner dust-removal curtain 7, and is collected by a dust collector (not shown). When the ground has a depression, the cyclone body is lowered to bring the weight ring 10 of the external dust removal curtain 8 into contact with the ground to prevent the dust from being discharged to the outside. When the spraying work on the ground is completed, the main body is lifted, moved to the next ground, and the same work is repeated.

Since this invention is as described above, a large amount of dust does not rise in the dust removal curtain unlike the conventional one, and a large amount is not directly sucked into the dust collection suction tube. There is no possibility that the dust collection ability will decrease in a short time due to the cloth clogging.

Further, even if the sprayed ground has irregularities, it is possible to prevent dust from spouting from the gap between the ground and the curtain.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a perspective view of a solidifying material spreader for soft ground improvement, and FIG. 2 is a vertical sectional view. 1 …… Cyclone 2 …… Hanger 3 …… Filter cloth 4 …… Outer cylinder 4b …… Inner cylinder 5 …… Solidification material injection pipe 6 …… Suction tube for dust collection 7 …… Internal dust removal curtain 8 …… External Dust removal curtain 9 …… Hopper 9a …… Shoot 10 …… Weight ring 11 …… Weight ring

Claims (1)

[Scope of utility model registration request] 1. A cyclone type sprayer has a cyclone type main body provided with a double dust removal curtain at a lower portion of the cyclone main body and a weight attached to each of the lower ends thereof, and a suction pipe for dust collection is provided between the dust removal curtains. A solidifying material spreader for improving soft ground, characterized by being connected to a dust collector.