JPH073317Y2 - Mud sample dryer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to environmental protection such as water treatment, chemical industry, food industry,
The present invention relates to a mud sample drying device that evaporates and dries the water contained in a collected mud material sample in order to measure the water content in the mud material handled in fields such as the pharmaceutical industry.

[Conventional technology]

Generally, in the fields of environmental protection such as water treatment, chemical industry, food industry, chemical industry, etc., in order to perform process control or quality control, the water content in the mud substance to be handled must be measured accurately and quickly. is important.

Heretofore, as a method of measuring this moisture, an ultrasonic attenuation method, an infrared absorption method, a dielectric constant method, an electric resistance method, a Karl Fischer method, an infrared drying method and the like have been known.

[Problems to be solved by the invention]

Among the conventional moisture measurement methods, ultrasonic attenuation method, infrared absorption method, dielectric constant method, electric resistance method are electrical measurement methods,
The time required for measurement is extremely short. However, since neither of these methods is a method for directly measuring water content,
It is known that the reliability of data decreases when the state of a solid contained in a sample changes.

Further, the Karl Fischer method is a chemical measurement method and is suitable for measurement of a small amount of water, but has a drawback that the operation is complicated and takes time.

Furthermore, the infrared drying method is a method of measuring water content by weighing the weight before and after heating and drying, and is the most reliable method, but it is disadvantageous in that the drying time is long and the time required for measurement is long. ing.

The present invention intends to further improve the conventional reliable infrared drying method, to provide a mud-like sample drying device capable of shortening the drying time of a sample and measuring its moisture quickly and accurately. It is a thing.

[Means for solving problems]

According to the present invention, an infrared heater having an annular structure is provided above a holding table for holding a sample container containing a mud-like sample, and the air heater is provided in close proximity to the infrared heater so that the infrared heater can pass through the infrared heater. An air heater for blowing hot air from the central portion of the infrared heater to the mud-like sample in the sample container is provided in the upper center of the infrared heater.

〔Example〕

An embodiment of the present invention will be described with reference to FIG.
An infrared heater 4 configured to be ventilated is provided in the vicinity of an upper portion of a sample container 3 holding a sample container 3 containing a mud sample 2 (hereinafter abbreviated as sample 2), and further above the upper part thereof. An air heater 5 for blowing hot air to the sample 2 in the sample container 3 held on the sample container 1 passing through the center of the infrared heater 4 is provided.

As the infrared heater 4, an infrared sheath heater, an infrared lamp, a ceramics heater, or the like can be used, and a far infrared heater that radiates a wavelength in the far infrared region can also be used.

Further, the air heater 5 is connected to the blower 7 through the air pipe 6 and normally has a flow rate of about 1 to 100 l / min.

The relative position between the infrared heater 4 and the air heater 5 is such that the sample 2 in the sample container 3 is heated by the infrared heater 4 and hot air from the air heater 5 is blown through the center of the infrared heater at the same time. At the position, the shape of the infrared heater 4 may be a spiral shape with a space as shown in the second illustrated example, or a donut shape as in the third illustrated example so that the infrared heater 4 can be ventilated. An air heater 5 is provided on the upper portion so that the hot air from the air heater 5 passes through the central portion of the infrared heater 4 and is blown onto the sample 2.

Furthermore, in order to prevent the sample 2 from being scorched during drying, it is preferable to control the temperature of the infrared heater 4 or the air heater 5. For example, as in the first illustrated example, the temperature near the surface of the sample 2 is sensed. A temperature controller 9 including a temperature sensor 8 such as a thermocouple or a thermistor is provided, and the temperature controller 9 may control the output of the infrared heater 4 or the air heater 5 to enable temperature control.
For temperature control in this case, the air heater 5 has a faster response speed than the infrared heater 4, so it is preferable to control the air heater 5.

In the figure, 10 indicates each electric wiring of the infrared heater 4, the air heater 5, the blower 7, and the temperature controller 9.

Then, the sample container 3 accommodating the sample 2 is held on the holding table 1, and the radiant heat from the infrared heater 4 and the air heater 5 are held.
Moisture in the sample 2 is evaporated by being heated by the hot air from the sample 2. At this time, the hot air from the air heater 5 comes into contact with the infrared heater 4 and is blown to the vicinity of the center of the sample 2 so that the surrounding area of the sample 2 is reduced. The water vapor is efficiently removed, and the water content in the sample 2 is quickly evaporated and dried.

In this way, the sample 2 is dried quickly by the synergistic effect of the arrangement relationship between the infrared heater 4 and the air heater 5, and the moisture content in the sample 2 can be measured accurately in a short time. Further, in order to adjust the heating temperature for the sample 2, the temperature near the surface of the sample 2 is sensed by the temperature sensor 8, and the output of the infrared heater 4 or the air heater 5 is controlled by the temperature controller 9, so that the set temperature can be adjusted. Performs temperature control with good followability.

[Effect of device]

According to the present invention, an infrared heater having an annular structure is provided above a holding table for holding a sample container containing a mud-like sample, and the air heater is provided in close proximity to the infrared heater so that the infrared heater can pass through the infrared heater. The air heater that blows hot air from the center of the sample to the mud sample in the sample container is arranged at the center of the upper part of the infrared heater, so that it passes from the center of the infrared heater to near the center of the sample. The hot air blown intensively removes water vapor from the surroundings of the sample efficiently, allowing the moisture in the sample to be evaporated quickly and efficiently, and a small amount of mud sample for which moisture should be measured is also sampled. Since highly reliable measurement results can be obtained, it is possible to accurately measure the moisture content of substances handled in various fields such as environmental protection, chemical industry, food industry, and pharmaceutical industry in a short time. Can, be applied to control or quality control of each process, energy saving, is intended to achieve the beneficial Naru effects such as resource saving or labor saving.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing one embodiment of the present invention, and FIGS. 2 and 3 show examples of the shape of an infrared heater used in the present invention. 1 ... Holding base, 2 ... Sample, 3 ... Sample container, 4 ... Infrared heater, 5 ... Air heater, 6 ... Air piping, 7 ...
Blower, 8 ... Temperature sensor, 9 ... Temperature controller, 10 ...
…Electric wiring.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshio Maeda Yoshio Maeda 1-6-27 Konan, Minato-ku, Tokyo Ebara In Filco Co., Ltd. (72) Koichi Yamamoto 1-6-27 Konan, Minato-ku, Tokyo Ebara In Infilco Co., Ltd. (72) Inventor Masaaki Osato 1-6-27 Konan, Minato-ku, Tokyo EBARA Infilco Co., Ltd. (56) References 28292 (JP, Y1) Actual public Sho 58-42865 (JP, Y2)

Claims (2)

[Scope of utility model registration request] 1. An infrared heater 4 having an annular structure which is closely ventilated is provided above the holding table 1 for holding a sample container 3 containing a mud matter sample 2, and the infrared heater 4 is provided with the infrared heater 4. An apparatus for drying a mud-like sample, characterized in that an air heater 5 for blowing hot air to the mud-like sample 2 in the sample container 3 from the center of the aeration part is provided in the upper center of the infrared heater 4. . 2. The infrared heater 4 or the air heater 5 comprises:
The mud-like sample drying device according to claim 1, wherein the temperature is controlled by a temperature controller 9 having a temperature sensor 8 for sensing the temperature in the vicinity of the sample container.