Data for determining the conditions of blockage of perforated sifting surfaces by particles of loose grain material

The blocking of the holes of sieving surfaces depends on a number of factors, among which the key ones are the properties of the particles of the loose material and the parameters of the holes. 1. The data are presented "Determination of the Young's modulus of loose material particles" in the form of a tabular dependence of the change in the Young's modulus for particles of loose material: wheat, corn, peas, and buckwheat. A digital pressure gauge (Tester AGW-3) was used for experimental identification. The influence of the relative humidity of the test material particles, the movement and force of the AGW-3 indicator were taken into account. The data obtained is a component for determining the adhesion force of loose material particles to the edges of the sieve holes. 2.The presented data 'Dependence of the adhesion force F_ad (N) on the relative velocity of the loose material particle (V_rp)' illustrate the relationship between the adhesion force of wheat, corn, pea, and buckwheat particles with the edge of openings and their relative velocity during passage through the perforation. Particular attention was given to the moisture content of the particles. The following parameters were held constant: number of sublayers of loose material (k_ml), contact coefficient (k_e), and thickness of the perforated screening surface (h_s). 3. The data ‘Dependence of the adhesion force Fad (N) on the number of sublayers of loose material (kml)’ are presented in the form of the dependence of the adhesion force of wheat, corn, peas and buckwheat particles with a hole edge on the number of sublayers of loose material. The thickness of one sublayer is assumed to be the thickness of a particle of loose material. Attention was also paid to the moisture content of the particles. The recorded parameters were: relative velocity of the loose material particle at the moment of contact with the hole edge, contact coefficient ke, thickness of the perforated screening surface hs. 4. The data ‘Dependence of the adhesion force Fad (N) on the contact coefficient ke’ are presented in the form of the dependence of the adhesion force of wheat, corn, peas and buckwheat particles with the hole edge on the coefficient of contact of the particle with the hole edge. The contact coefficient depends on the shape of the hole. In the case of typical hole shapes, this coefficient reaches 1. The use of epicycloidal holes significantly reduces it. Attention was also paid to the moisture content of the particles. The recorded parameters were: relative velocity of the loose material particle at the moment of contact with the hole edge, number of sublayers of loose material kml, thickness of the perforated screening surface hs. 5. The data ‘Dependence of the adhesion force Fad (N) on the thickness of the perforated screening surface (hs)’ is presented in the form of the dependence of the adhesion force of wheat, corn, peas and buckwheat particles with the edge of the holes on the thickness of the sieve. The thickness of the sieve forms the contact path that the particles must overcome when they are sieved through the holes. Attention was also paid to the moisture content of the particles. The recorded parameters were: relative velocity of the loose material particle at the moment of contact with the hole edge, number of sublayers of loose material kml, contact coefficient ke.筛分面筛孔的堵塞情况受多种因素影响，其中核心影响因素为松散物料颗粒的特性与筛孔参数。 1. 本数据集以表格形式呈现《松散物料颗粒杨氏模量（Young's modulus）测定》（Determination of the Young's modulus of loose material particles）中，小麦、玉米、豌豆及荞麦颗粒的杨氏模量变化关系。实验采用数字压力表（digital pressure gauge）Tester AGW-3完成实验测定，同时考量了被测物料颗粒的相对湿度、AGW-3指示器的位移与受力情况。所得数据可作为测定松散物料颗粒与筛孔边缘粘附力（adhesion force）的组成部分。 2. 本次展示的数据集《松散物料颗粒粘附力F_ad（N）随相对运动速度V_rp的变化关系》（Dependence of the adhesion force F_ad (N) on the relative velocity of the loose material particle (V_rp)），阐明了小麦、玉米、豌豆及荞麦颗粒与筛孔边缘的粘附力，与其穿过穿孔筛面时的相对运动速度之间的关联。实验重点关注了物料颗粒的含水率，同时固定了如下参数：松散物料子层数（k_ml）、接触系数（contact coefficient）以及穿孔筛分面厚度（h_s）。 3. 数据集《粘附力F_ad（N）随松散物料子层数（k_ml）的变化关系》以表格形式呈现了小麦、玉米、豌豆及荞麦颗粒与筛孔边缘的粘附力，随松散物料子层数的变化关系。其中，单个子层的厚度设定为松散物料颗粒的厚度。实验同样关注了物料颗粒的含水率，固定参数包括：颗粒与筛孔边缘接触瞬间的相对运动速度、接触系数（k_e）以及穿孔筛分面厚度（h_s）。 4. 数据集《粘附力F_ad（N）随接触系数（k_e）的变化关系》呈现了小麦、玉米、豌豆及荞麦颗粒与筛孔边缘的粘附力，随颗粒与筛孔边缘接触系数的变化关系。接触系数取决于筛孔形状：对于典型筛孔形状，该系数取值为1；若采用摆线孔（epicycloidal holes），则可显著降低该系数。实验同样关注了物料颗粒的含水率，固定参数包括：颗粒与筛孔边缘接触瞬间的相对运动速度、松散物料子层数（k_ml）以及穿孔筛分面厚度（h_s）。 5. 数据集《粘附力F_ad（N）随穿孔筛分面厚度（h_s）的变化关系》呈现了小麦、玉米、豌豆及荞麦颗粒与筛孔边缘的粘附力，随筛板厚度的变化关系。筛板厚度决定了颗粒穿过筛孔时所需克服的接触路径长度。实验同样关注了物料颗粒的含水率，固定参数包括：颗粒与筛孔边缘接触瞬间的相对运动速度、松散物料子层数（k_ml）以及接触系数（k_e）。