Soil air drying box

Abstract

The invention belongs to the technical field of soil analysis, and relates to a soil air drying box. The soil air drying box comprises an air drying box body and exhaust holes arranged on the air drying box body, mounting grooves are annularly arranged at the side walls of the exhaust holes, mounting disks are fixedly connected in the mounting grooves, the mounting disks are provided with a plurality of seal plates, the sides of adjacent seal plates are rotationally laminated, the seal plates are rotationally and sealingly cover the exhaust holes, circular control panels are rotationally connected in the mounting grooves, the disk surfaces of the control panels are provided with a plurality of arc-shaped necks in the circumference, drive rods are hinged at the disk surfaces of the controlpanels, one ends, back to the control panels, of the drive rods are hinged at the end portions of the seal plates, the sides of the control panels are provided with sawteeth, control gears are rotationally connected in the mounting grooves, and the mounting grooves are internally provided with drive motors rotationally controlling the gears. The soil air drying box can regulate the hole diametersof the exhaust holes according to actual requirements and can timely regulate the gas discharge rate in the air drying unit chamber so as to improve the soil test efficiency.

Description

technical field [0001] The invention relates to the technical field of soil analysis, in particular to a soil air-drying box. Background technique [0002] Soil samples often need to be air-dried for physical and chemical analysis. After being collected from the field, spread them out in a clean indoor ventilated place until they are naturally air-dried. Exposure to the sun is strictly prohibited. Pay attention to pollution sources such as acids, alkalis, dust, and gases that may affect the test results, and air-dry them. During the process, the soil samples should be turned frequently, large soil clods should be crushed, and intrusions other than the soil such as stones should be removed. The soil samples after air drying can be analyzed for physical and chemical indicators such as soil nutrients and organic matter. When the soil sample has a high water content, natural air drying often takes a long time. [0003] At present, the Chinese patent with the publication number ...

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Problems solved by technology

[0004] In normal use, there is a vent hole on the door of the air-drying unit chamber, and the vent hole is only a conventional cylindrical hole. During the soil test, the amount of gas in the air-drying unit chamber needs to be discharged according to the test requirements. The test The amount of gas in the air-drying unit chamber is different for different soil types. However, the aperture of the conventional vent hole is fixed, and the aperture of the vent hole cannot be adjusted according to the actual exhaust volume, thereby affecting the test efficiency of the soil.

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