JPS5924169A - Drier - 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 The present invention relates to a dryer for efficiently drying wet items.

Traditionally, when drying wet powder or items with complex shapes, hot air is used to dry the item, either by blowing it on the item or by simply heating it. In a desiccator, the dehydrating agent and the item are dried together in an airtight container with a slider.

Furthermore, the sample chamber, which can be heated with a vacuum dryer, is dried by reducing the pressure with a vacuum pump.

However, all of these conventional dryers have many problems in rapid drying.

In other words, a dryer that sends hot air cannot be used for items that deteriorate due to heating. Also, with a normal desiccator, dehydration and drying takes too much time and is inefficient. It was not good.

Furthermore, in a vacuum dryer, moisture is removed by rapid evaporation at first, but the temperature of the product is rapidly cooled due to the heat of vaporization of the water. For this reason, even if a heater is installed in the sample chamber, the interior is in a vacuum, so heat conduction is poor, and items cannot be heated efficiently, and moist items remain locally cooled due to heat of vaporization. be.

In addition, samples with high moisture content may even freeze even though they are heated.

That is, the conventional dryer had a drawback of poor drying efficiency.

An object of the present invention is to provide a dryer with extremely high drying efficiency.

The dryer of the present invention includes a sample chamber for storing all items to be dried, a dehydrating agent column filled with a dehydrating agent, and a circulation pump for circulating internal air through the sample chamber and the dehydrating agent column. It consists of:

That is, the dryer of the present invention has a structure that can be sealed, and includes a separation chamber, a dehydrating agent column, and a circulation pump, and is configured so that internal air can be circulated between the sample chamber and the dehydrating agent column.

That is, by selecting the type of dehydrating agent for the dryer of the present invention, items can be efficiently dried at room temperature or at high temperatures. Furthermore, since there is no vacuum inside, and because air is forced to circulate, heating is extremely efficient. The humid air in the sample chamber is dehumidified by a dehydrating agent column, and then returned to the sample chamber with dry air. This process is carried out continuously by a pump so that the items dry quickly.

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

FIG. 1 is a conceptual diagram showing an embodiment of the dryer of the present invention.

The dryer shown in FIG. 1 includes a sample M1, a lid 2 for making the sampling opening airtight, a backing 3, a dehydrating agent column 4, a circulation pump 5, and stop pulp 6, 7. and a conduit 8.

The items to be dried are placed in the sample chamber 1, covered with the lid 2, the stop valve 6.7 is opened, and the circulation pump 5 is activated. This is a VC factory, the air inside is, for example, air flow direction 9.10
It flows and circulates in the direction shown. Humid air in the air flow direction 9 near the air outlet is forced to pass through the dehydrating agent column 4 via the circulation pump 5, so that dry air flows into the sample chamber 1 as shown in the air flow direction 1o. .

For this reason, the items in the sample chamber l are exposed to dry air without coloring and are therefore dried efficiently. L.

Note that a heater may be provided in the sample chamber 1.

In this case, unlike a vacuum dryer, air circulates inside the dryer, so it is possible to heat the product uniformly and quickly.

Further, if necessary for regenerating the dehydrating agent, a heater may be provided in the dehydrating agent column 4.

In this case, by opening the lid 2 of the sample chamber 1 and operating the circulation pump 5, the heating regeneration process of the dehydrating agent can be carried out efficiently.

As a dehydrating agent, silica gel, magnesium perchlorate,
Zeolite, activated alumina, etc. can be used as required.

Next, regarding the usage example of the dryer shown in FIG.
C.Explain.

The dryer shown in FIG. 1 has a cylindrical sample chamber 1 with an internal volume of 511.
Figure 1 shows a dehydrating agent column 4 filled with 500 grams of synthetic zeolite (Zeolum A 3, sold by Wako Pure Systems), and a circulation pump 5, which is an air pump for circulation.
This dryer is connected to the dryer, and sand containing 30% moisture is
Insert 0g and turn on the air pump to approximately 101Vin.
When air was circulated through eye 1, the moisture in the sand decreased by 1 within 5 minutes.
% or less.

When this same amount of the same sand was treated with a commercially available vacuum dryer, it was not possible to reduce the VC to 1% or less within 1 hour even if it was heated to 50°C.

Note that in the dryer shown in FIG. 1, when the operation of the circulation pump 5 was stopped and air was not circulated, it was impossible to reduce the moisture content of the sand to 1% or less within one hour.

As specifically shown in the above usage examples, the dryer of the present invention can provide a new and extremely effective dryer.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram showing an embodiment of the present invention. 1...sample chamber, 2...lid, 3 river packing, 4...
- Dehydrating agent column, 5... Circulation pump, 6.7 River stop valve, 8... Conduit, 9. lo...Air flow direction.

Claims (1)

[Claims] Drying characterized by comprising a sample chamber for storing items to be dried, a dehydrating agent column filled with a dehydrating agent, and a circulation pump for circulating internal air through the sample chamber and the dehydrating agent column. vessel.