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Manual sampling device

A technology of manual sampling and sampling cylinder, which is applied in sampling devices and other directions, can solve problems such as inaccurate sampling, and achieve the effect of improving sampling accuracy

Active Publication Date: 2016-05-25
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem in the prior art that it is easy to push away the bulk material in the sample to be sampled and cause inaccurate sampling, the present invention provides a manual sampling device to achieve the purpose of improving sampling accuracy

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Embodiment Construction

[0024] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0025] Such as Figure 2 to Figure 4 As shown, the embodiment of the present invention provides a manual sampling device, including: a sampling barrel 10 and an auger. In the expanded surface of the sampling cylinder 10, the lower end of the sampling cylinder 10 is a part of a sine curve or a cosine curve. The auger is sleeved in the sampling barrel 10. The auger includes a rotating rod 21 and a spiral piece 22 fixed on the outer circumference of the rotating rod 21. The outer diameter of the spiral piece 22 is smaller than the inner diameter of the sampling barrel 10. The spiral piece 22 It can be driven by the rotating rod 21 to rotate around the axis of the sampling cylinder 10, and t...

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Abstract

The invention provides a manual sampling device. The manual sampling device comprises a sampling tube and a spiral drill, wherein the lower end, in an extended surface of the sampling tube, of the sampling tube is a part of a sine curve or a cosine curve; the spiral drill is nested in the sampling tube, the spiral drill comprises a rotating rod and a spiral blade, the spiral blade is fixed on the outer peripheral surface of the rotating rod, the outer diameter of the spiral blade is less than the inner diameter of the sampling tube, the spiral blade can be driven to rotate around the axial line of the sampling tube by the rotating rod, and the spiral blade can move along with the rotating rod along the axial line direction of the sampling tube. By setting the lower end of the sampling tube into a sine curve or cosine curve shape, a situation that large materials are squeezed out by the sampling tube can be avoided in the process of sampling, so that complete samples can be collected, thereby achieving the purpose of increasing the sampling accuracy.

Description

Technical field [0001] The invention relates to the field of sampling devices, in particular to a manual sampling device. Background technique [0002] Coal is my country's main energy product. In my country's primary energy structure, coal will occupy an important strategic position for a long time. As a commodity of bulk, bulk, and uneven quality, coal products usually need to be priced by quality. In addition, it is necessary to determine the rational use of coal commodities based on product quality parameters. This requires sampling, sample preparation, and testing of coal products to test the quality of various indicators. The total precision of coal sample testing consists of three links: sampling, sample preparation, and testing. Errors also come from these three aspects. Experiments show that if the error is expressed by variance, sampling error accounts for 80%, sample preparation error accounts for 16%, and laboratory error accounts for 4%. Therefore, sampling of co...

Claims

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Application Information

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IPC IPC(8): G01N1/08
Inventor 张国金孙钊龚兴波张建国石元元杨威陈卫卫郭爱玲王胜梅
Owner STATE GRID CORP OF CHINA
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