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Soil sample collection device

A soil sample and collector technology, applied in the field of soil measurement, can solve the problems of discrete sampling depth, limited effective sampling height, and extrusion.

Inactive Publication Date: 2013-10-30
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has the disadvantages that the collected soil will inevitably be squeezed during hard sampling, and the head and tail are cut off, the effective sampling height is limited, and the sampling depth is discrete.

Method used

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Embodiment Construction

[0014] Below in conjunction with the accompanying drawings, the present invention is described in detail, such as figure 1 As shown, the soil sample collector of the present invention includes a drill rod 2, the upper end of the drill rod 2 is a drill shank 1, the lower end of the drill rod 2 is a drill bit 4, and the drill surface of the drill bit 4 is a helical surface, which is provided in the drill rod 2. There is a concentric positioning device, the sampling pipe 3 is rotatably arranged at the lower end of the concentric positioning device, and the upper end of the concentric positioning device is detachably connected with the drill shank 1 . The concentric positioning device includes a sampling tube fixing cap 8, a bearing 10, a fixing shaft 11 and a nut 9, the bearing 10 is arranged between the lower end of the fixing shaft 11 and the sampling fixing cap 8, and the upper end of the fixing shaft 11 and the drill shank 1 are fixed by the nut 9 connection, see figure 2 ....

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Abstract

The invention discloses a soil sample collection device which comprises a drill rod and a sampling tube, wherein a drill handle is arranged at the upper end of the drill rod; a drill bit is arranged at the lower end of the drill rod; a drill surface of the drill bit is a helical surface; a concentric positioning device is arranged in the drill rod; the sampling tube is rotatably arranged at the lower end of the concentric positioning device; and the upper end of the concentric positioning device is detachably connected with the drill handle. Compared with the prior art, in the soil sample collection device disclosed by the invention, a detachable sampling tube is arranged in the drill rod, and a drill bit with a helical surface is arranged at the lower end of the drill rod; when in sampling, external soil can be discharged out of the outer part of the drill rod through the helical drill surface, and the drill rod and the sampling tube are separated so that the sampling tube is always kept in a soil sampling hole; to continue drilling, the drill rod is connected with the sampling tube; thus continuous sampling is realized in the case of discontinuous drilling, and the sampling tube is always kept in the hole; and moreover, the soil sample collected in the sampling tube is always the original one, and the volume weight and water content of the soil can be accurately measured.

Description

technical field [0001] The invention relates to a soil sample collecting instrument, which belongs to the technical field of soil measurement. Background technique [0002] At present, the electronic instrument observation method and the soil drilling observation method are used for the observation of soil moisture in the agricultural meteorological business, and the electronic instrument observation needs to be calibrated by the soil drilling method. Obviously, the quality of the calibration is directly related to the observation results of the electronic instrument, and the quality of the calibration depends on the accuracy of the soil drilling method itself. The soil drilling method can only obtain the gravimetric water content. To measure the volumetric water content, it is also necessary to measure the soil bulk density. Measuring soil bulk density in my country has always been a arduous task, such as the stratified soil ring sampling method, which is a large workload,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/08G01N5/04
Inventor 万长建张富存韩小梅
Owner NANJING UNIV OF INFORMATION SCI & TECH
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