JPS6193850A - Cyclone - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Object of the Invention) The present invention relates to an improvement in a cyclone for collecting powder, granules, and the like.

In conventional cyclones, particularly highly adhesive powders, etc., tend to adhere to the walls from the cyclone's function, forming bridges, and eventually clogging the inside and causing loss of function. .

The present invention solves the above-mentioned drawbacks by jetting or outflowing air (or gas) onto the inner surface of the cyclone to prevent particles from adhering to the cyclone, or by peeling off the particles once they have adhered to the cyclone. It is.

In addition, in the structure of a conventional cyclone, there is an inner cylinder with an exhaust port, which is fixedly separated from the outer cylinder (main body) by an upper plate, and the inlet for the powder mixed air (or gas) is in this upper plate. It is located directly below. This powder with high adhesion is deposited on the upper plate.
It easily adheres between the inner and outer cylinders and significantly impedes the cyclone function.

The present invention provides a space large enough for the powder-heated air (or gas) to once generate a swirling flow upward, so that all the swirling flow comes into contact with the air (gas) jetting out or flowing out from the wall surface. Especially, it solves the above-mentioned drawbacks.

(Structure of the Invention) The present invention includes a cyclone body (2) that is made of a breathable material or a material processed to be breathable, and has a mechanism that substantially has small holes, and a casing (1) that covers the outside of the cyclone body. It has an air (or gas) chamber (6) covered with a Equipped with a structure that blows out or outflows air (or gas) from part or all of the inner wall surface, and a space above the inlet (3) for air (or gas) mixed with powder, etc. that allows for one or more rotations of the swirling flow. , relates to a cyclone characterized by preventing adhesion.

The breathable material in the cyclone main body of the present invention is:
For example, materials and mechanisms including porous synthetic resins, ceramics, etc., processed into a breathable state include, for example, metals, synthetic resins, etc. with nail holes, net-like materials, etc.

Next, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a front sectional view, and FIG. 2 is a plan view thereof.

The casing (1) has an air (or gas) supply port α [, and the cyclone body (2) is made of a breathable material or has a structure that allows ventilation. Particles such as powder are mixed with air (or gas) and passed through the inlet (3) for 10 to 30 minutes.
It is supplied at a speed of 20/s and forms a swirling flow inside the main body. At this time, particles with large specific gravity are separated to the wall surface, and air (or gas) is separated to the center side. The amount of air (or gas) supplied from the air (or gas) supply port must be such that the flow velocity of the air (or gas) blown from the wall of the main body into the cyclone is greater than or equal to the sedimentation velocity of the particles to be collected (some adhesion is possible). (in this case, the static pressure is greater than the powder resistance value for that thickness). The particles that have moved toward the wall have their horizontal force reduced by the air (or gas) blown out from between the walls of the main body, and move downward. Part of the flow becomes an upward swirling flow, and the particles are given an upward force and move against gravity, but along the way the gravity becomes stronger and they turn downward. (Since a space is required in which the upward swirling flow can make one rotation or more, the length of the cylindrical part of the cyclone is 1°2 than that of a conventional cyclone.
~2 times as much. ) Some of the relatively large particles reach the upper plate (4), collide with it, and turn downward. At that time, the particles lose their kinetic energy and are carried to the exhaust port (9) by the air (or gas) flow, so in order to prevent this, the lower end of the exhaust pipe (7) is moved slightly above the upper plate (for example, (approximately 10% of the board diameter).
In a normal cyclone, the lower end of the inner cylinder, which corresponds to the exhaust pipe, is inserted below the lower surface of the inlet. The inlet, as already mentioned, is located just below the top plate. ).

In the manner described above, almost all of the particles can be separated and collected.

(Effects of the invention) By implementing the present invention, it is possible to prevent even highly adhesive powder from adhering inside the cyclone.
The collection efficiency is also good, and long-term operation is possible even in environments where the temperature is higher than the fat melting point of the fat-containing powder.

[Brief explanation of the drawing]

The drawing shows an example of the cyclone of the present invention.
The figure is a front sectional view, and FIG. 2 is a plan view thereof. The small holes in the cyclone body are provided on the entire surface or in part), and the arrows indicating air (or gas) being spouted or outflowed to the inner wall are partially omitted and partially filled in. . The thick arrow (a) indicating the flow from the inlet is powder, etc.
The thin arrow (b) is air (or gas). 1: Casing, 2: Cyclone body, 3: Inlet, 4
: Top plate, 5: Bottom plate, 6: Air (or gas) chamber, 7: Exhaust stack, 8: Exhaust port for collected powder, etc., 9: Exhaust port, 10
: Air (or gas) supply port O Patent applicant: Morinaga & Co., Ltd.

Claims (1)

[Claims] It has a cyclone body made of a breathable material or a material processed to be breathable, and a mechanism that has substantially small holes, and an air (or gas) chamber covered with a casing on the outside of the body, which allows air to be drawn from the outside. A structure that supplies air (or gas) and blows out or flows out through small holes in the cyclone body onto a part or the entire surface of the inner wall of the cyclone, and an upper part of the inlet for air (or gas) mixed with powder, etc. A cyclone characterized by having a space in which a swirling flow can make one or more revolutions to prevent adhesion.