JP2005199224A - Wind power screening device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device capable of selecting even fine particles with high precision with regard to a wind power screening device that selects the solid particles with high precision. <P>SOLUTION: The device is provided with a main column 3 with a lower end opened, a cyclone 5 connected through a branched path 4 from the column 3, a light article recovery section provided at an upper end of the column 3, a sample supply inlet 12, and a feeder 11 communicating with the column 3 through the inlet 12, an upper valve 13 and a lower valve 14 are provided above the opening at the lower end of the column 3, an expansion chamber 2 having a charge inlet 1 is formed above the valve 13, the cyclone 5 is provided with an overflow 6 and an underflow 8, and a lower end of the underflow 8 communicates with the column 3, the heavy articles carried in the gas stream while mixed with the light articles are guided into the path 4 and are captured by the cyclone 5, and the light articles and the heavy articles can be separated with high precision by returning the captured heavy articles to the inlet 12 to repeat the rescreening. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wind power sorting apparatus that sorts solid particles with high accuracy.

  Conventionally, various types of wind power sorting devices and air flow sorting devices are known. Cyclone type using swirl flow, zigzag classifier type that floats and collects light weight by rising flow in a vertical column of zigzag, falling light weight by applying air flow from the side to falling particle flow Those that change the trajectory are known (see Patent Documents 1 and 2).

Furthermore, a configuration using an upward flow in a vertical vertical column is also known (see Patent Documents 3 and 4).
JP 2002-126648 A JP2000-084488 Patent 2636160 Patent 2757333

  Any of the conventional examples described in Patent Documents 1 to 4 separates a light object and a heavy object by a single selection, and has a drawback that the accuracy of the selection is lowered depending on the object.

  Sorting of solid particles by a wind power sorter using upflow is performed by utilizing the difference in the speed (terminal velocity) at which different particles freely fall in the air. The terminal speed is small for light objects and large for heavy objects. Theoretically, when an upward flow with a flow velocity larger than the terminal velocity of a light object and smaller than that of a heavy object is applied to both, the light object is carried by the upward flow and levitated, whereas the heavy object is It is possible to select the two by falling against it.

  However, when the difference between the terminal speeds is small, it is difficult to separate the two, and the floating or falling object, or both, becomes a mixture of light and heavy objects. When the particles to be sorted become fine particles, the difference in termination speed becomes extremely small, and high-precision separation is impossible with wind sorting. On the other hand, wind sorting is excellent as an energy-saving sorting process, and a wind sorter applicable to fine particles has been desired.

  An object of the present invention is to solve the conventional problems as described above, and an object of the present invention is to realize a wind power device capable of high-precision sorting even with fine particles.

  In order to solve the above-mentioned problems, the present invention is an apparatus that sorts light and heavy objects by wind power of airflow, provided with a branch path in the airflow passage, and mixed with the light weight to be carried by the airflow. An object is guided and captured to the branching path, and the captured heavy object is returned to the airflow path and re-sorting is repeated, thereby enabling high-precision sorting of a light object and a heavy object. A wind sorting apparatus is provided.

  In order to solve the above problems, the present invention provides a main column having an open lower end, a cyclone connected via a branch path from the main column, a light weight collection unit provided at the upper end of the main column, A wind power sorting apparatus comprising a sample supply port and a feeder communicating with the main column via the sample supply port, wherein an upper valve and a lower valve are provided above the opening at the lower end of the main column. An expansion chamber having an air supply port is formed above the upper valve, and the cyclone has an overflow and an underflow, and the lower end of the underflow communicates with the main column. A wind power sorting apparatus is provided.

  The lower end of the underflow is in communication with the feeder.

  The lower end of the underflow and the feeder are joined at a sample supply port.

  The cyclone includes a flow controller.

  The lightweight object recovery unit is characterized in that a net surface is formed at the upper end and a recovery port is formed at the lower part.

  The lightweight object recovery unit is a cyclone having a lightweight object recovery port.

  The cyclone includes a flow rate controller having a light weight collection port.

  By adopting the above-mentioned solution, the wind power sorter can improve the accuracy of sorting by allowing solid particles to circulate through the branch passage and passing through the air flow passage many times. As a result, the same effect can be achieved with one sorter by connecting many stages of conventional wind sorters in which solid particles pass through the air flow path only once and repeating the sort. it can.

  The best mode for carrying out the present invention will be described below with reference to the drawings based on the embodiments.

(principle)
First, the principle of the present invention will be described with reference to FIG. When an appropriate branch path is provided in the airflow path, the flow velocities of the path A before branching and the path B after branching differ. The flow rates of the passage B and the branch passage C vary depending on the shape of the branch passage and the flow velocity of the passage A, but the flow velocity of the passage A is higher than the flow velocity of the passage B in any case.

  When the flow rate of the passage A is adjusted so that the entire amount of the light weight object and a part of the heavy weight object float, and the flow rate of the passage B is adjusted so that a part of the light weight object sinks, Only light weight remains on the upper part of the passage B.

  The mixture of light and heavy items is guided to the branch path C, but is collected by an existing device such as a cyclone and returned to the path A before branching, and the selection is repeated again. By collecting a heavy object that has fallen in the lower part of the passage A and a lightweight object that has floated in the upper part of the passage B, high-precision separation of the two can be achieved.

  Example 1 is shown in FIG. This wind power sorter has a vertical main column 3. The lower end of the main column 3 is opened, and an upper valve 13 and a lower valve 14 are provided above it, and an expansion chamber 2 is formed above it. An air supply port 1 is formed in the expansion chamber 2.

  A light weight collection unit 9 is provided at the upper end of the main column 3. A net surface 10 is formed at the upper end of the light weight collection unit 9, and a collection port 15 is formed at the bottom. A sample supply port 12 is formed below the middle part of the main column 3, and the sample supply port 12 is connected to the feeder 11.

  A branch path 4 is formed above the middle part of the main column 3. The branch path 4 is connected to a cyclone 5, and the cyclone 5 includes an overflow 6 and an underflow 8. A flow rate regulator 7 is provided at the upper end of the overflow 6, and the lower end of the underflow 8 is open and communicates with the feeder 11.

(Function)
The air supplied from the air supply port 1 by a blower (not shown) turns into an upward flow in the expansion chamber 2 and ascends the main column 3. A part of the airflow enters the cyclone 5 through the branch path 4, most of which is exhausted from the overflow 6 at the top of the cyclone through the flow controller 7, and the rest is exhausted from the underflow 8 at the bottom of the cyclone.

  On the other hand, the airflow that has not entered the branch path 4 rises as it is in the main column 3 and is exhausted through the mesh surface 10 provided in the upper part of the light weight collection unit 9.

  A mixture of light and heavy objects to be sorted is supplied to the main column 3 through the sample supply port 12 by the feeder 11. Here, the entire amount of the lightweight material and a part of the heavy material are levitated and rise in the main column 3 together with the air flow. Heavy objects that have fallen against the upward flow pass through the open upper valve 13 and accumulate on the closed lower valve 14. When collecting heavy objects, the upper valve 13 is closed and the lower valve 14 is opened to collect.

  The levitated matter that has risen in the main column is divided into one that goes to the branch path 4 and one that goes up the main column 3 as it is. By adjusting the flow rate with the flow rate controller 7, the main column 3 that rises as it is can be reduced to only a light weight, and the entire amount of the heavy weight that has floated can be guided to the branch path 4.

  The mixture of the light and heavy items entering the branch path 4 is separated from the air by the cyclone 5 and returned to the feeder 11 through the underflow 8. The lightweight material that has moved up the main column 3 without going to the branch path 4 is separated from the air in the lightweight material recovery unit 9 and recovered through the recovery port 15.

  Example 2 is shown in FIG. The second embodiment has substantially the same configuration as the first embodiment, but in the second embodiment, the underflow 8 of the cyclone 5 is directly connected to the sample supply port 12 instead of the feeder 11 as in the first embodiment. Different. Example 2 will be described below.

  This wind power sorter has a vertical main column 3. The lower end of the main column 3 is opened, and an upper valve 13 and a lower valve 14 are provided above it, and an expansion chamber 2 is formed above it. An air supply port 1 is formed in the expansion chamber 2. A light weight collection unit 9 is provided at the upper end of the main column 3. A net surface 10 is formed at the upper end of the light weight collection unit 9, and a collection port 15 is formed at the bottom.

  A sample supply port 12 is formed below the middle part of the main column 3, and the sample supply port 12 is connected to the feeder 11. A branch path 4 is formed above the middle part of the main column 3. The branch path 4 is connected to a cyclone 5, and the cyclone is composed of an overflow 6 and an underflow 8. A flow controller 7 is provided at the upper end of the overflow 6, and the underflow 8 is connected to the sample supply port 12 at the lower end.

(Function)
The air supplied from the air supply port 1 by the blower turns into an upward flow in the expansion chamber 2 and ascends the main column 3. A part of the air flow enters the cyclone 5 through the branch path 4, most of which is exhausted from the overflow 6 at the upper part of the cyclone through the flow controller 7, and the rest enters the sample supply port 12 from the underflow 8 at the lower part of the cyclone. On the other hand, the airflow that has not entered the branch path 4 rises as it is in the main column 3 and is exhausted through the mesh surface 10 provided at the upper part of the light weight collection unit 9.

  A mixture of light and heavy objects to be sorted is supplied to the main column 3 through the sample supply port 12 by the feeder 11. Here, the entire amount of the lightweight material and a part of the heavy material are levitated and rise in the main column 3 together with the air flow. Heavy objects that have fallen against the upward flow pass through the open upper valve 13 and accumulate on the closed lower valve 14. When collecting heavy objects, the upper valve 13 is closed and the lower valve 14 is opened to collect. The levitated matter that has risen in the main column is divided into two that are directed to the branch path 4 and one that ascends the main column.

  By adjusting the flow rate with the flow rate regulator 7, the only thing that ascends the main column as it is can be a lightweight object, and the entire amount of the lifted heavy object can be guided to the branch path 4. The mixture of the light and heavy items entering the branch path 4 is separated from the air by the cyclone 5 and returned to the sample supply port 12 through the underflow 8. The lightweight material that has moved up the main column 3 without going to the branch path 4 is separated from the air in the lightweight material recovery unit 9 and recovered through the recovery port 15.

  Example 3 is shown in FIG. This embodiment is almost the same as the first embodiment. The difference is that a cyclone 16 is provided in place of the lightweight collection unit 9. In other words, the characteristic feature of the third embodiment is that the cyclone 16 includes an overflow 17 and an underflow 19. A flow rate regulator 18 is provided at the upper end of the overflow 17, and the lower end of the underflow 19 is open.

  The characteristic configuration of the third embodiment is as described above. The overall configuration will be described below. This wind power sorter has a vertical main column 3. The lower end of the main column 3 is opened, and an upper valve 13 and a lower valve 14 are provided above it, and an expansion chamber 2 is formed above it. An air supply port 1 is formed in the expansion chamber 2.

  The upper end of the main column 3 is connected to the cyclone 16. The cyclone 16 is composed of an overflow 17 and an underflow 19. A flow rate regulator 18 is provided at the upper end of the overflow 17, and the lower end of the underflow 19 is open. A sample supply port 12 is formed below the middle part of the main column 3, and the sample supply port 12 is connected to the feeder 11.

  A branch path 4 is formed above the middle part of the main column 3. The branch path 4 is connected to a cyclone 5, and the cyclone is composed of an overflow 6 and an underflow 8. A flow rate regulator 7 is provided at the upper end of the overflow 6, and the lower end of the underflow 8 is open and communicates with the feeder 11.

(Function)
The air supplied from the air supply port 1 by the blower turns into an upward flow in the expansion chamber 2 and ascends the main column 3. A part of the airflow enters the cyclone 5 through the branch path 4, most of which is exhausted from the overflow 6 at the top of the cyclone through the flow controller 7, and the rest is exhausted from the underflow 8 at the bottom of the cyclone.

  On the other hand, the airflow that has not entered the branch path 4 rises as it is in the main column 3 and enters the cyclone 16. Most of the air entering the cyclone 16 is exhausted from the overflow 17 through the flow controller 18, and the rest is exhausted from the underflow 19.

  A mixture of light and heavy objects to be sorted is supplied to the main column 3 through the sample supply port 12 by the feeder 11. Here, the entire amount of the lightweight material and a part of the heavy material are levitated and rise in the main column 3 together with the air flow. Heavy objects that have fallen against the upward flow pass through the open upper valve 13 and accumulate on the closed lower valve 14. When collecting heavy objects, the upper valve 13 is closed and the lower valve 14 is opened to collect.

  The levitated matter that has risen in the main column is divided into two that are directed to the branch path 4 and one that ascends the main column. By adjusting the flow rate with the flow rate regulators 7 and 18, the only thing that ascends the main column as it is is a lightweight item, and the entire amount of the lifted heavy item can be guided to the branch path 4.

  The mixture of the light and heavy items entering the branch path 4 is separated from the air by the cyclone 5 and returned to the feeder 11 through the underflow 8. The lightweight material that has moved up the main column 3 without going to the branch path 4 is separated from the air by the cyclone 16 and recovered from the underflow 19.

  Particle size, density, etc., including selection of particles with different particle sizes in the granule manufacturing process and removal of foreign substances, selection of materials in the waste recycling process, removal of foreign substances in agricultural products, selection of grains, etc. There are applications in general sorting by shape.

It is a principle diagram of the present invention. It is a front view of Example 1 of the sorting device concerning the present invention. It is a front view of Example 2 of the sorting device concerning the present invention. It is a front view of Example 3 of the sorting device concerning the present invention.

Explanation of symbols

A passage before branch
B Post-branch passage
C branch road
1 Air supply port
2 Expansion chamber
3 Main column
4 branch road
5 Cyclone
6 Cyclone overflow
7 Flow controller
8 Cyclone Underflow
9 Lightweight material collection department
10 Mesh
11 Feeder
12 Sample supply port
13 Upper valve
14 Lower valve
15 Lightweight collection port
16 Cyclone
17 Cyclone overflow
18 Flow controller
19 Cyclone Underflow

Claims (8)

A device that sorts light and heavy items by wind power of air current,
A branch path is provided in the airflow path, and heavy objects that are mixed in lightweight objects and transported to the airflow are guided to the branch path and captured, and the captured heavy objects are returned to the airflow path for re-sorting. By repeating the above, it is possible to sort light and heavy objects with high accuracy. A main column having an open lower end, a cyclone connected via a branch path from the main column, a light weight recovery unit provided at an upper end of the main column, a sample supply port, and the sample supply port A wind power sorter equipped with a feeder communicating with the main column,
An upper valve and a lower valve are provided above the opening at the lower end of the main column, and an expansion chamber having an air supply port is formed above the upper valve,
The cyclone includes an overflow and an underflow, and a lower end of the underflow communicates with a main column.   The wind power sorting device according to claim 2, wherein a lower end of the underflow communicates with the feeder.   The wind power sorter according to claim 2, wherein a lower end of the underflow and the feeder are joined at a sample supply port.   The wind power sorting apparatus according to claim 2, 3 or 4, wherein the cyclone includes a flow rate regulator.   6. The wind power sorting apparatus according to claim 2, wherein the light weight collection unit has a mesh surface formed at an upper end thereof and a collection port formed at a lower portion thereof.   6. The wind power sorting apparatus according to claim 2, 3, 4, or 5, wherein the light weight collection unit is a cyclone having a light weight collection port.   8. The wind power sorting apparatus according to claim 7, wherein the cyclone includes a flow rate regulator having a light weight collection port.