JPH01254270A - Powder recovery apparatus - Google Patents

Abstract

PURPOSE:To reutilize a dusting powder, by connecting a powder collecting means to the inflow port of a cyclone to collect dust and classifying the same to recover the dusting powder. CONSTITUTION:The dusting powder scattered during work is sucked in a hood 5 as a powder to be sent to the inflow port 4 of a cyclone 1 through a duct 8. The powder flows in the cyclone 1 in a tangential direction to generate a vortex and a heavy powder sediments in the cyclone 1. A light dust is sucked out from the suction port 3 provided to the upper end of the cyclone 1 to be collected by the filter part of a blower. The heavy dusting powder reaching the lower part of the cyclone 1 is moved through a discharge pipe 7A by a screw conveyor 7B to be sent to a discharge port 8. When the discharge pipe 7A is filled with the dusting powder, a valve body 9 becomes an open state and the dusting powder falls to be separated by a sieving means. By this method, economical effect is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a powder collection device, and more specifically, after collecting hand powder and other dust scattered in a room during work, This invention relates to a powder recovery device that sorts and collects hand powder and prepares it for reuse.

(Prior Art) In the processing of bread and noodles, hand flour is used to prevent the dough from coming into close contact with hands or work tools, but this flour is scattered during the processing. Therefore, conventionally, the particles were collected by a hood installed above the workbench to prevent the particles from spreading throughout the room.

Since the collected hand powder contains fine dust and foreign matter, the collected powder was disposed of as is.

(Problems to be Solved by the Invention) With the conventional collection described above, the inside of the working room can be kept clean. However, most of what is collected is hand powder, and a large amount of hand powder is scattered during work, so collecting and disposing of this waste means wasting the hand powder. The economic loss will be large.

The present invention solves the above-mentioned disadvantages, and not only collects scattered powder such as hand powder to keep the work room clean, but also separates and collects hand powder from the powder, making it possible to reuse it. The purpose of this invention is to provide a powder recovery device.

(Means for Solving the Problems) The present invention solves the above-mentioned problems, and the configuration of the powder collection device is a powder collection device that collects powder such as scattered hand powder and dust. means are connected to said inlet of a cyclone having a negative pressure suction at its upper end and an inlet tangentially at the top, and conveyor means having a screw conveyor in a laterally extending discharge pipe in the lower part of the cyclone; connection,
A valve body is provided at the discharge port provided at the end of the discharge pipe of the conveyor means, and is rotatable and opens under its own weight, and is sucked by the negative pressure of the cyclone to close the discharge port. In this method, a sieve means is arranged to receive the falling powder and classify the powder according to a predetermined particle size, and below the sieve means, a collection container is arranged individually at each classification position.

(Function) According to the present invention configured as described above, collection of hand flour is performed in the following capacity.

(2) Powder including hand powder and dust scattered during work is collected by a powder collection means using, for example, a hood provided above the workbench.

■The powder collecting means is connected to a cyclone, and the powder flowing tangentially into the cyclone from the inlet provided at the top of the cyclone is collected by centrifugal force, and the powder with a certain particle size (weight) or more is collected. That is, hand powder and foreign matter settle in a spiral along the peripheral wall surface, while fine and lightweight dust and the like are removed from the cyclone through the suction port at the upper end located in the center of the cyclone.

■The hand powder and foreign matter that have reached the bottom of the cyclone are discharged by the conveyor means and fall from the discharge port. At this time, since the discharge pipe of the conveyor means is full of hand powder and foreign matter, the negative pressure of the cyclone does not reach the discharge port, and the hand powder and foreign matter fall from the discharge port to the outside. On the other hand, when the above-mentioned discharge pipe is not full of hand powder and foreign matter, such as when starting powder collection, the above-mentioned negative pressure is applied to the discharge port, so the discharge port is closed to prevent dust etc. from being sucked in from the outside. It is more practical to provide a valve body that closes the outlet only when there is negative pressure.

■Thus, the hand powder and foreign matter discharged from the discharge port are
They are sorted from each other by sieving means. That is, since hand powder has a smaller diameter than foreign matter, it passes through the sieve and is collected in a collection container for hand powder, and the remaining foreign matter is collected in the collection container. Only the hand powder is recovered from the collected powder and is reused.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the drawings, the apparatus of this embodiment is shown as a unit, but the front panel and opening/closing door are omitted.

In the drawings, reference numeral 1 denotes a cyclone, which is provided with a suction port 3 at the center of its upper end for suctioning negative pressure by a filter-equipped blower 2, and has an inflow port 4 in the tangential direction at the top. Above a workbench (not shown) for kneading dough such as bread using hand flour, a hood 5 is arranged as a means for collecting scattered hand flour. It is connected to the inlet 4.

The lower part of the cyclone 1 is provided with conveyor means 7 extending laterally therefrom. The conveyor means 7 is
A discharge pipe 7A communicates with the lower space of the cyclone 1, and a screw conveyor 7B driven by a motor 7C is provided inside the discharge pipe 7A. The lower part of the cyclone 1 also includes means such as scrapers (not shown) to prevent hand powder from adhering to the inner wall surface. A downwardly open discharge port 8 is provided at the end of the discharge pipe 7A, and the discharge port 8 is opened and closed by a valve body 9.

The valve body 9 has a hinge 9A at one location of the discharge port, and is rotatably attached, so that it rotates downward under its own weight to open the discharge port 8 and to release the negative pressure inside the cyclone. Its own weight is set so that when the discharge port 8 is reached, it is sucked by the negative pressure and closes the discharge port 8.

An inclined sieve means 10 is arranged below the discharge port 8. The sieve means 10 has a mesh net 10A in a predetermined area that allows the hand powder to pass through, and the lower end 1OB is open to allow the remaining foreign matter to fall.

The sieving means 10 is vibrated by a motor 100, etc., and is capable of sieving operation.

Below the mesh body 10A of the sieve means 10, a hand powder collection container 12 supported by a wagon 11 that can be freely carried out is disposed, and below the lower end 10B of the sieve means 10, a wagon 13 that can also be freely carried out is disposed. A foreign matter collection container 14 supported by is disposed.

In the powder collection device constructed as described above, collection of hand powder is performed in the following manner.

First, hand powder scattered during work is sucked into the hood 5 as a powder containing fine dust and foreign matter, and sent to the inlet 4 of the cyclone 1 via the duct 6.

(2) The powder flows tangentially into the cyclone 1, creating a vortex. Therefore, due to the centrifugal force, heavy objects such as hand powder and foreign objects settle in the cyclone 1 while rotating.

■On the other hand, light particles such as dust are separated from the hand powder and are sucked out from the suction port 3 at the top of the cyclone 1, and collected by a part of the filter of the blower. .

■ Hand powder and foreign matter that have reached the bottom of cyclone 1 are
The screw conveyor 7B, which is rotated by a motor 7C, moves through the discharge pipe 7A, and the discharge port 8 at the end thereof.
sent to.

■When the inside of the discharge pipe 7A becomes filled with hand powder and foreign matter, the negative pressure inside the cyclone 1 does not reach the valve body 9 of the discharge port 8, which rotates downward due to its own weight and becomes open. As a result, the hand powder and foreign matter fall off.

■ Hand flour and foreign matter are in a mixed state, but when they fall into the sieving means 10, they are subjected to vibrations, the hand flour passes through the mesh body 10A, is collected in the hand flour collection container 12, and the hand flour becomes granular. Foreign matter with a large diameter reaches the lower end 10B of the sieve means without passing through the mesh body 10A, and is stored in the foreign matter collection container 14 here.

(2) Thus, at an appropriate time, the wagon 11 is pulled out, the hand powder collection container 12 is taken out to reuse the hand powder, and the foreign material collection container 14 is taken out from the wagon 13 to dispose of the foreign material.

(Effects of the Invention) As described above, the present invention makes it possible to collect dust and foreign substances from the scattered hand powder and then separate only the hand powder and reuse it, so that the work room is always kept clean. Not only can it be preserved, but the economic effect of reusing hand flour can also be improved. Moreover,
Considering that most of the collected powder is hand flour, the effect is tremendous.

[Brief explanation of the drawing]

The drawing is a front view showing an embodiment of the present invention. l...Cyclone 2...Blower with filter 3...
Suction port 4...Inflow port 5...Hood 6...Duct 7
... Conveyor means 7A ... Discharge pipe 7B ... Screw conveyor 8 ... Discharge port 9 ... Valve body 10 ... Sieve means 10A ... Mesh net body 12 ... Hand powder collection container 14 ... Foreign matter collection container

Claims (2)

[Claims] (1) A powder collecting means for collecting powder such as scattered hand powder and dust is connected to the inlet of a cyclone which has a negative pressure suction port at the upper end and an inlet in the upper tangential direction, and In this method, a conveyor means having a screw conveyor is connected to a discharge pipe extending laterally, and the conveyor is filled with the powder that flows in from the inlet and falls to the lower part of the cyclone, and the powder is discharged from the discharge pipe to the outside. A powder recovery device characterized by discharging powder into (2) A powder collecting means for collecting powder such as scattered hand powder and dust is connected to the inlet of the cyclone, which has a negative pressure suction port at the upper end and an inlet in the tangential direction of the upper end, and In this case, a conveyor means having a screw conveyor is connected to a discharge pipe extending laterally, and a discharge port provided at the end of the discharge pipe of the conveyor means is rotatably opened by its own weight, and a cyclone A valve body is provided which closes the discharge port by suction by negative pressure, and a sieve means is disposed below the discharge port to receive the falling powder and classify the powder according to a predetermined particle size. A powder collection device characterized in that a collection container is individually arranged at each classification position below.