JPH0557008B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an apparatus for filtering and drying slurry containing solids.

[Conventional technology]

In order to obtain dry solids from a processed material containing solids and liquids such as slurry, a dehydration filtration operation;
It is widely known that the drying operation is performed using a separate device.

Furthermore, there are known devices in which after dehydration filtration is completed, the container itself is inverted or tilted, and the filtered solids are dropped into a drying section with a jacket, or the container is dried by continuing rotation. 52−
No. 17898).

[Problem that the invention seeks to solve]

However, in the above-mentioned devices that perform filtration and drying using separate devices, it is necessary to transfer the filtered solids to a drying device, which may cause contamination of foreign matter such as dust.
There were problems such as deterioration due to contact with the air, adverse effects on the human body and environment due to harmful substances, and the need for complicated labor.

In addition, in devices that perform filtration and drying by inverting or tilting the container, the solids obtained in one filtration operation are processed in one drying operation, so in many cases, the drying device has poor filtration performance. The volumetric efficiency is extremely poor, and it is dangerous to flip, tilt, or rotate.
There were problems such as the inability to automate the supply of materials to be processed and the discharge of dried materials on a line.

This invention is intended to solve the above problems, and it is possible to perform filtration and drying with one device.
The object of the present invention is to provide a filtration/drying apparatus that does not bring the material to be processed into contact with the outside during intermediate steps, has high volumetric efficiency in filtration and drying, and is less dangerous.

[Means for solving problems]

This invention provides a container having a filtration section at the top and a drying section at the bottom divided by a partition, a center pole extending from the bottom of the drying section in the center of the container to the filtration section, and a center pole provided above the partition of the filtration section. a filter medium provided in the filtration section; a material introduction section provided above the filter medium of the filtration section; and a filtrate discharge section provided below the filter medium; a passage formed through a partition wall and a filter medium; a shutter for opening and closing this passage; a jacket provided around the drying section; a heat medium inlet and a heat medium outlet for introducing and discharging a heat medium into the jacket; a steam discharge section and a dry matter discharge section provided in the drying section; and a steam discharge section and a dry matter discharge section provided in the container so as to transfer the solids obtained in the filtration section to the drying section through the passage and to stir the solids in the drying section. This is a filtration drying device equipped with a vibration generator.

[Effect]

In the filtration drying apparatus of the present invention, a material to be treated such as a slurry is introduced from a material introduction part into a filtration part in a container, filtered through a filter medium, and the filtrate is discharged to the outside, while solids are removed by the filter medium. Capture. After the filtration is completed, the solids obtained by filtration are moved on the filter medium by applying vibrations to the container using a vibration generator, and the solids obtained by the filtration are caused to fall through the passage into the drying section by opening the shutter. These operations can be performed multiple times if necessary. Thereafter, a heating medium is introduced into the jacket from the heating medium inlet to heat the drying section, and the container is vibrated by a vibration generator to agitate and dry the solids.

When the container is vibrated by the vibration generator, the solids in the filtration section and the solids in the drying section move along the peripheral wall of the container and are agitated, but because of the center pole, stagnation and short circuits in the center are prevented. The transfer and stirring effect will be high. The steam generated in the drying section is discharged from the steam discharge section, and the dried solids are discharged from the dry matter discharge section.

{Examples] The present invention will be explained below using examples. 1st
The figure is a vertical sectional view of the embodiment, FIG. 2 is a sectional view taken along line A-A, and FIGS.
It is a sectional view of B.

In the figure, reference numeral 1 denotes a main body container, which is formed into a vertical cylindrical shape, and is partitioned by a partition wall 4 into a filtration section 2 at the upper part and a drying section 3 at the lower part. A hollow center pole 5 is inserted into the center of the container 1 from the bottom of the drying section 3.
rises and extends halfway through the filter section 2.

In the filtration section 2, a filter plate 6 as a filter medium is provided on the partition wall 4.
is provided and fixed by a flange 7. A passage 8 is provided in a portion of the partition wall 4 and the filter plate 6. A shutter 9 is provided in the passage 8 and can be opened and closed by a lever 10. Filtration section 2
A supply nozzle 1 with a supply valve 11 is located in the upper part of the
2 and a compressed air inlet 13 are provided. Partition wall 4
A drain pipe 14 is connected to a drain nozzle 16 from the lowest part through a flexible tube 15, and is suctioned by a vacuum pump 17.

A jacket 18 is installed on the side wall and bottom wall of the drying section 3.
is provided and connected to the heat medium inlet 19 and the heat medium outlet 20. An exhaust nozzle 2 is installed at the top of the drying section 3.
1 is provided, and a discharge nozzle 23 having a discharge valve 22 is provided at the bottom. The container 1 is supported by a column 25 via a vibration-proof rubber 24.

Two vibration generators 26 and 27 are provided on both sides of the lower part of the container 1 in an intersecting direction so as to apply vibrations in an inclined direction along the peripheral wall of the container 1. The vibration generators 26 and 27 are constructed by attaching weights to both ends of the rotating shafts of two motors installed at both sides of the lower part of the container 1 so as to be inclined in the intersecting direction, so as to cancel out the horizontal component forces. The containers 1 are rotated, and the respective weights apply linear vibrations to the container 1 in the direction of inclination along its peripheral wall.

In the above configuration, the shutter 9 is closed as shown in FIG.
1 is closed and suction is performed from the drain nozzle 16 using the vacuum pump 17 to perform filtration. At this time, compressed air may be sent from the compressed air inlet 13 to perform filtration by a pressurization method. By filtration, the material to be treated is separated into a filtrate and solid matter by the filter plate 6, the filtrate is discharged to the outside from the drain nozzle 16, and the solid matter is captured by the filter plate 6. Filtration may be performed multiple times, or continuous filtration may be performed.

After filtration, the vibration generators 26 and 27 are driven to give vibration to the container 1, and when the shutter 9 is opened as shown in FIG. 4, the solids on the filter plate 6 are vibrated along the peripheral wall of the container 1. It is lifted obliquely upward, moves in a circular manner on the filter plate 6, and falls into the drying section 3 through the passage 8.
At this time, compressed air, washing water, or the like may be introduced through the nozzle 28 to promote peeling or to wash the filter plate 6. After the solid matter has fallen, if the drying capacity of the drying section 3 is sufficient, the above-mentioned filtration and solid matter transfer are repeated several times.

When an appropriate amount of solid material is transferred to the drying section 3 in this way, a heating medium is introduced into the jacket 18 to heat the solid material in the drying section 3, and the vibration generators 26 and 27 are driven to remove the solid material. Stir. At this time, the vibration of the container 1 causes the solid material to vibrate in an oblique direction along the peripheral wall, and the solid material is lifted obliquely upward along the side wall to the side wall part where the contact area with the container 1 is large. It moves inward along the upper surface of the layer, and moves in a circular manner along the peripheral wall while performing a spiral movement in which the central portion of the container 1 descends along the center pole 5. At this time, the solids move in the horizontal direction and jump in the vertical direction, and are efficiently stirred. In this case, it is also possible to increase the stirring efficiency by providing a buffer in the drying section 3.

In this way, the solid matter is dried in the drying section 3,
The generated steam is exhausted from the exhaust nozzle 21.
At this time, suction from the exhaust nozzle 21 accelerates drying. As a specific method of suction, the exhaust nozzle 21 is guided to a condenser (not shown) connected to a suction means such as a vacuum pump 17 or a blower.
Cooling water is supplied to the condenser and the condenser is evacuated while being cooled to perform vacuum drying. The dried material is discharged from the discharge nozzle 23 by opening the discharge valve 22 while continuing to vibrate.

In the above-mentioned apparatus, filtration and drying can be performed in one type of apparatus, and the material to be treated does not come into contact with the outside during intermediate steps, so there is no risk of contamination with foreign substances or deterioration of quality. In addition, by repeating filtration and transferring solids several times, the dry loading amount per unit volume is larger than that of conventional methods, which reduces the time required for supply and discharge, resulting in a reduction in the throughput per unit time. (production volume) increases. Further, since the container 1 does not need to be turned over or tilted, there is no danger.

In addition, in the above description, the structure, arrangement, etc. of the container 1, filtration part 2, drying part 3, passage 8, shutter 9, vibration generators 26, 27, filter media, etc. are not limited to those in the example and can be changed. It is. Furthermore, the object to be treated is not limited to slurry, but may be anything containing solids and liquids.

〔Effect of the invention〕

According to this invention, a passage having a shutter that can be opened and closed is provided in the partition wall that divides the filtration part and the drying part into upper and lower parts of the container, and the dried material is dropped from the filtration part by vibration, and in the drying part by vibration. While stirring the solid matter, it is heated by the jacket and transferred through the center port to enhance the stirring effect, so the solid matter can be moved by opening and closing the shutter in one device, and filtration and stirring can be carried out continuously or in parallel. The process can be carried out efficiently, and the material to be processed does not come into contact with the outside during the process, increasing the volumetric efficiency of filtration and drying, and there is no need to invert or tilt the container, so there is less danger. effective.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view of the embodiment, and Figure 2 is its A.
-A sectional view, FIGS. 3 and 4 are BB sectional views showing other states. In each figure, the same reference numerals indicate the same parts, 1 is the main container, 2 is the filtration part, 3 is the drying part, 4 is the partition wall, 5 is the center pole, 6 is the filter plate, 8 is the passage, 9 is the shutter, 12 is a supply nozzle, 16 is a drain nozzle, 1
8 is a jacket, 21 is an exhaust nozzle, 23 is an exhaust nozzle, and 26 and 27 are vibration generators.

Claims (1)

[Scope of Claims] 1. A container having a filtration section at the top and a drying section at the bottom divided by partition walls, a center pole extending from the bottom of the drying section in the center of the container to the filtration section, and a center pole extending from the partition wall of the filtration section. a filter medium provided at the top; a material introduction section provided above the filter medium of the filtration section; and a filtrate discharge section provided below the filter medium; solids are dropped from the filtration section to the drying section. a passage formed through a partition wall and a filter medium; a shutter for opening and closing this passage; a jacket provided around the drying section; a heating medium inlet and a heating medium outlet for introducing and discharging a heating medium into the jacket. a steam exhaust section and a dry matter discharge section provided in the drying section; and the container configured to transfer the solids obtained in the filtration section to the drying section through the passage and to stir the solids in the drying section. A filtration drying device equipped with a vibration generator installed in the filtration drying device. 2. The filtration and drying device according to claim 1, wherein the container is a vertical cylindrical container having a filtration section at the top and a drying section at the bottom. 3. The filtration drying device according to claim 1 or 2, wherein the vibration generator applies vibration in an oblique direction along the peripheral wall of the container.