Device and method for bulk granule collision falling point distribution and collision recovery coefficient measurement

A particle collision and restitution coefficient technology, applied in the agricultural field, can solve the problems of inability to measure the distribution value, high measurement cost, and high measurement accuracy

Pending Publication Date: 2017-09-08
ZHEJIANG UNIV OF TECH
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  • Application Information

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Problems solved by technology

This measurement method can only measure the average value of the particle collision restitution coefficient, and cannot measure the distribution value
A high-speed camera is used to track the trajectory of particles before and after the collision. The measurement accuracy is high during the measurement process, but the measurement cost is high, and the measurement efficiency is low when a si...

Method used

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  • Device and method for bulk granule collision falling point distribution and collision recovery coefficient measurement

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings, but it should not be understood that the scope of the above-mentioned theme of the present invention is limited to the above-mentioned embodiments.

[0023] Such as figure 1 As shown in the figure, a measuring device for the distribution of impact points of bulk particles and the coefficient of collision restitution includes a horizontal base 10, a slide bar 1, a large container 9, an electronic scale 11, and a lifting platform 7; the left side of the horizontal base 10 is vertically fixed with a slide bar 1. There is a height scale on the slider 1, and the slider 2 is installed on the slider 1 by sliding up and down through the fixing nut; the right side of the slider 2 is equipped with a material bucket 3 placed horizontally, and the material bucket 3 is a U-shaped structure with a bottom There is a round hole in the center, the round hole has a 45-degree cha...

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Abstract

The invention relates to the field of agriculture, in particular relates to a bulk granule collision testing device. A device for bulk granule collision falling point distribution and collision recovery coefficient measurement comprises a material falling mechanism, a collision mechanism, a falling material collecting mechanism and an analysis mechanism, wherein the collision mechanism is positioned below the material falling mechanism, the material falling mechanism is used for placing a to-be-measured granule from a high place into the collision mechanism, and the material falling mechanism is provided with a material falling hole having a size matched with the size of the to-be-measured granule; the collision mechanism is used for colliding the granule flowing out from the material falling mechanism into the falling material collecting mechanism, the falling material collecting mechanism is positioned at the material falling place of the granule after collision, and the falling material collecting mechanism is used for separately collecting the granules coming out of the collision mechanism by; and the analysis mechanism is used for quantitative analysis of the granules in the material falling mechanism. The device and the method disclosed by the invention are convenient for collision falling point distribution and collision recovery coefficient measurement of bulk granules. The structure is simple, and the operation is convenient.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a device for testing bulk particles. [0002] The invention relates to the agricultural field, in particular to a bulk particle collision test method. Background technique [0003] The restitution coefficient of bulk particles can be defined by the ratio of the rebound velocity after impact to the velocity before impact, that is, e=V R / V, the physical meaning of particle collision restitution coefficient is to describe the energy loss before and after the collision. In the numerical simulation process of agricultural seeders (such as wheat seeders, soybean seeders), the collision recovery coefficient of bulk material particles (such as rice seeds, soybean seeds, wheat seeds) is one of the key parameters to describe the movement of particles. This parameter can easily calculate the velocity of particles after collision. [0004] Most of the existing technologies use high-speed camer...

Claims

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Application Information

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IPC IPC(8): G01N15/00G01N3/52
CPCG01N3/52G01N15/00G01N2015/0003
Inventor 朱良友赵云华钟英杰祁亚茹
Owner ZHEJIANG UNIV OF TECH
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