CN104964895A - Method and apparatus for determining apparent density of pervasive solid substance - Google Patents
Method and apparatus for determining apparent density of pervasive solid substance Download PDFInfo
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Abstract
本发明涉及普适固体物视密度的测定方法及其装置。测定不溶性固体密度可用比重瓶或韦氏比重称，可溶性固体可用气体比重法，但仪器制造精度苛刻，经济性和方便性较差。本方法以固态流体为容积置换介质；使用特制的容积测定装置，测定待测物体积；使用分析天平测定其质量；通过特定公式计算，实现视密度测定。该装置由下、中、上瓶体、量程管及加入的固态流体组成。本发明结构简单，实用经济；固态流体可重复使用，对环境友好；固态流体一次加入，利用固定筛网在装置从正立转位成倒立过程中实现待测物与固态流体分离，操作十分方便；此装置，适用于所有固体物质的视密度测定，可解决形状不规则、具有可溶性或可浸润性固体物质视密度测定的难题。
The invention relates to a method and a device for measuring the apparent density of universal solid objects. The density of insoluble solids can be measured by pycnometer or Webster pycnometer, and the gas pycnometric method can be used for soluble solids, but the precision of the instrument is harsh, and the economy and convenience are poor. This method uses solid fluid as the volume replacement medium; uses a special volume measuring device to measure the volume of the object to be measured; uses an analytical balance to measure its mass; and calculates through a specific formula to achieve apparent density measurement. The device is composed of lower, middle and upper bottles, measuring range tube and added solid fluid. The invention is simple in structure, practical and economical; the solid fluid can be reused and is environmentally friendly; the solid fluid is added once, and the fixed screen is used to separate the object to be tested from the solid fluid during the process of turning the device from upright to inverted, and the operation is very convenient ; This device is suitable for measuring the apparent density of all solid substances, and can solve the problem of measuring the apparent density of irregularly shaped, soluble or wettable solid substances.
Description
技术领域 technical field
本发明涉及一种密度测定方法，具体涉及一种普适固体物视密度的测定方法及其装置。 The invention relates to a method for measuring density, in particular to a method for measuring the apparent density of a universal solid object and a device thereof.
背景技术 Background technique
视密度是物体质量与其占据空间的比值，在天然物物性分析和工程计算中它比真密度还要实用。但由于固体物质形体多不规则，体积测定较难，尤其对于可溶性和吸湿性固体，其体积、密度的测定就更加困难。目前，测定不溶性固体密度，可用比重瓶或韦氏比重称。对于可溶性固体，可用气体比重法（Gas Pycnometry），且有气体恒温压力比法和气体比热容比法方面的研究。但用气体容积置换法的仪器制造精度苛刻，且需要配置氦气钢瓶等一系列装置，使用的经济性和方便性较差。 Apparent density is the ratio of the mass of an object to the space it occupies, and it is more practical than the true density in the analysis of physical properties of natural objects and engineering calculations. However, due to the irregular shape of solid substances, volume measurement is difficult, especially for soluble and hygroscopic solids, the measurement of volume and density is even more difficult. At present, to measure the density of insoluble solids, a pycnometer or a Webster pycnometer can be used. For soluble solids, gas pycnometry can be used, and there are studies on gas constant temperature and pressure ratio method and gas specific heat capacity ratio method. However, the manufacturing precision of the instrument using the gas volume displacement method is harsh, and a series of devices such as helium cylinders are required, so the economy and convenience of use are poor.
发明内容 Contents of the invention
本发明的目的是提供一种普适固体物视密度的测定方法及其装置，可解决形状不规则、具有可溶性或可浸润性固体物质视密度测定的难题。 The purpose of the present invention is to provide a method for measuring the apparent density of a universal solid object and its device, which can solve the problem of measuring the apparent density of irregularly shaped, soluble or wettable solid objects.
本发明所采用的技术方案是： The technical scheme adopted in the present invention is:
普适固体物视密度的测定方法，其特征在于： The method for measuring the apparent density of a universal solid object is characterized in that:
所述方法利用测定装置，填充固态流体，通过体积置换方式实现。 The method utilizes a measuring device, is filled with solid fluid, and is realized through volume replacement.
所述测定方法以固态流体为容积置换介质，通过特制的测定装置，加入固态流体和待测物，用千分尺测定装置内固态流体的高度变化，确定待测物的体积；结合待测物得质量，对待测物进行视密度测定。 The measurement method uses solid fluid as the volume replacement medium, through a special measuring device, adding solid fluid and the object to be measured, measuring the height change of the solid fluid in the device with a micrometer, and determining the volume of the object to be measured; combining the object to be measured to obtain the mass , to measure the apparent density of the object to be tested.
所述固态流体由以下步骤制得： Described solid fluid is made by following steps:
步骤一：固态流体原料的选择： Step 1: Selection of solid fluid raw materials:
选用自身流动较好的矿物、植物及人工制备的球形或类球形物质； Choose minerals, plants and artificially prepared spherical or spherical substances with good flow;
步骤二：预处理与粒径分级： Step 2: Pretreatment and particle size classification:
对选用的固态流体原料进行手工预处理，用自然筛分或研磨筛分进行粒径分级，粒径范围为1-0.36mm，得到试样； The selected solid fluid raw materials are manually pretreated, and the particle size classification is carried out by natural sieving or grinding sieving, and the particle size range is 1-0.36mm to obtain samples;
步骤三：流化处理： Step 3: Fluidization:
在步骤二所得的试样中加入固态或液态助流剂，旋转、打磨，进行流化处理，助流剂的用量为0.0-5.0%，得到固态流体； Adding a solid or liquid flow aid to the sample obtained in step 2, rotating, grinding, and performing fluidization treatment, the amount of the flow aid is 0.0-5.0%, to obtain a solid fluid;
步骤四：固态流体质量确认： Step 4: Solid fluid quality confirmation:
测定所得固态流体的粒径、休止角和夯实时间，符合粒径范围为1-0.36mm、休止角为20-45°、夯实时间为0.5-5min的确定为适用固态流体。 Measure the particle size, angle of repose, and tamping time of the obtained solid fluid. If the particle size range is 1-0.36mm, the angle of repose is 20-45°, and the tamping time is 0.5-5min, it is determined to be suitable for solid fluid.
所述测定装置包括以下结构： The assay device includes the following structures:
自下而上包括下瓶体、中瓶体和上瓶体，中瓶体作为下瓶体和上瓶体的连接段； From bottom to top, it includes the lower bottle body, the middle bottle body and the upper bottle body, and the middle bottle body is used as the connecting section between the lower bottle body and the upper bottle body;
中瓶体直径小于下瓶体和上瓶体，中瓶体中设置有水平的固定筛网； The diameter of the middle bottle body is smaller than that of the lower bottle body and the upper bottle body, and a horizontal fixed screen is arranged in the middle bottle body;
上瓶体顶部设置有量程管； There is a measuring range tube on the top of the upper bottle;
量程管顶端设置数显深度千分尺另外配有橡胶塞。 A digital display depth micrometer is set on the top of the range tube, and a rubber stopper is also provided.
下瓶体顶端和上瓶体底端均设置有外螺纹，中瓶体上下两端均设置有内螺纹，下瓶体和上瓶体均通过螺纹连接于中瓶体。 Both the top of the lower bottle body and the bottom end of the upper bottle body are provided with external threads, and the upper and lower ends of the middle bottle body are provided with internal threads, and both the lower bottle body and the upper bottle body are connected to the middle bottle body by threads.
上瓶体与量程管通过金属套箍连接。 The upper bottle body and the measuring range tube are connected by a metal ferrule.
所述测定装置的测定过程包括以下步骤： The assay process of the assay device comprises the following steps:
步骤一：组装普适固体物视密度的测定装置： Step 1: Assemble the device for measuring the apparent density of universal solid objects:
自下而上组装下瓶体、中瓶体和上瓶体，中瓶体作为下瓶体和上瓶体的连接段，中瓶体中安装水平的固定筛网； Assemble the lower bottle body, the middle bottle body and the upper bottle body from bottom to top, the middle bottle body is used as the connection section between the lower bottle body and the upper bottle body, and a horizontal fixed screen is installed in the middle bottle body;
下瓶体顶端和上瓶体底端均设置有外螺纹，中瓶体上下两端均设置有内螺纹，下瓶体和上瓶体均通过螺纹连接于中瓶体； Both the top of the lower bottle body and the bottom end of the upper bottle body are provided with external threads, and the upper and lower ends of the middle bottle body are provided with internal threads, and both the lower bottle body and the upper bottle body are connected to the middle bottle body by threads;
上瓶体顶部通过金属套箍连接量程管； The top of the upper bottle is connected to the measuring range tube through a metal ferrule;
步骤二：各部件体积的确定： Step 2: Determination of the volume of each component:
以固定筛网分界，确定下瓶体、上瓶体及量程管三部分的体积，设下瓶体总体积为V，上瓶体体积为V1，待测物真实体积为V2，量程管体积为V3； Determine the volumes of the lower bottle, the upper bottle and the range tube with the fixed screen as the boundary, set the total volume of the lower bottle as V, the volume of the upper bottle as V 1 , the real volume of the object to be measured as V 2 , and the volume of the range tube The volume is V 3 ;
步骤三：量程管的标化： Step 3: Standardization of the range tube:
量程管顶端安装数显深度千分尺，室温下用量筒向测定装置中加水至距量程管下端高度为h处，在此处标记下基线，然后用校正过的滴定管滴加体积为VB的水，滴加时在4、8、12mL处各标记一个圆点，并在VB处标记上基线，用数显深度千分尺准确量度上、下基线间的距离，记为Hs-x；以下基线处为基点0，用数显深度千分尺准确量度0、4、8、12、VB mL处的距离，通过线性回归得出线性相关系数为1，方为合格； Install a digital display depth micrometer on the top of the measuring range tube. At room temperature, use a measuring cylinder to add water to the measuring device to a height h from the lower end of the measuring range tube. Mark the baseline here, and then use a calibrated burette to drop water with a volume of V B. When adding drops, mark a dot at 4, 8, and 12mL, and mark the upper baseline at V B , and use a digital depth micrometer to accurately measure the distance between the upper and lower baselines, which is recorded as Hs-x; the lower baseline is Base point 0, use a digital display depth micrometer to accurately measure the distances at 0, 4, 8, 12, and V B mL, and obtain a linear correlation coefficient of 1 through linear regression to qualify;
步骤四：装载固态流体： Step 4: Load solid fluid:
取下数显深度千分尺，取固态流体，在夯实条件下，借助锥形漏斗从量程管上端处加入，边加边夯实，直至加至量程管下刻度线；安装数显深度千分尺测量固态流体顶部至量程管上基线的距离，记为Hz； Take off the digital display depth micrometer, take the solid fluid, and add it from the upper end of the range tube with the help of a tapered funnel under tamping conditions, and tamp it while adding, until it reaches the lower scale line of the range tube; install the digital display depth micrometer to measure the top of the solid fluid The distance to the baseline on the measuring range tube, denoted as Hz;
步骤五：待测物体积的测定： Step 5: Determination of the volume of the object to be tested:
取下数显深度千分尺，用橡胶瓶塞盖住量程管上口，将测定装置从正立转位成倒立，拧下下瓶体，拧下中瓶体，将装入准确称重的待测物装于下瓶体中，拧上中瓶体，与上瓶体相连，拧紧各连接处，翻转测定装置，复位于正立，超声夯实；安装数显深度千分尺测量待测物及固态流体混合体的顶部至量程管上基线的距离，记为Hy； Take off the digital display depth micrometer, cover the upper opening of the measuring range tube with a rubber stopper, turn the measuring device from upright to upside down, unscrew the lower bottle body, unscrew the middle bottle body, and put the accurately weighed to-be-measured Put the object in the lower bottle, screw on the middle bottle, connect with the upper bottle, tighten the joints, turn over the measuring device, return to the upright position, and ultrasonically tamp; install a digital display depth micrometer to measure the mixture of the test object and solid fluid The distance from the top of the body to the baseline on the measuring range tube is denoted as Hy;
用分析天平称量待测物质量，以固态流体为流体，用测定装置测定待测物体积，然后按下式计算，得出待测物视密度： Weigh the mass of the object to be measured with an analytical balance, use the solid fluid as the fluid, measure the volume of the object to be measured with a measuring device, and then calculate according to the following formula to obtain the apparent density of the object to be tested:
式中： In the formula:
w为待测物重量,单位为g； w is the weight of the object to be measured, in g;
Hs-x为上、下基线间的距离，单位为mm； H sx is the distance between the upper and lower baselines, in mm;
Hz为夯实后固态流体顶部至测量管上基线的距离，单位为mm； H z is the distance from the top of the solid fluid after tamping to the baseline on the measuring tube, in mm;
Hy为加入待测物后，重新夯实后固态流体顶部至测量管上基线的距离，单位为mm； H y is the distance from the top of the solid fluid to the baseline on the measuring tube after retamping after adding the object to be tested, in mm;
VB为测量管上、下基线间经标定的体积，单位为mL； V B is the calibrated volume between the upper and lower baselines of the measuring tube, in mL;
为温度影响系数，室温下，取为1。 is the temperature influence coefficient, at room temperature, Take it as 1.
本发明具有以下优点： The present invention has the following advantages:
本发明适用范围广，可解决可溶性、易浸润、体积不规则固体物视密度的测定的难题，对各种类型固体普遍适用；结构简单，采用特制的容积测定装置，以固体流动剂为流体介质，并与分析天平称重、千分尺测深相结合，可完成视密度的测定工作；操作方便，固态流体一次加入，使用时仅需瓶体颠倒和复位，即可测出△H（Hz-Hy），测试精度为0.05-0.001mm；实用性较强，经方法学研究得出，以黄豆为试样本方法的重现性RSD为0.96%，以比重瓶法为对照准确度为99.81%。 The invention has a wide range of applications, can solve the problem of measuring the apparent density of soluble, easy-to-wet, and irregular-volume solids, and is generally applicable to various types of solids; it has a simple structure, adopts a special volume measurement device, and uses a solid flow agent as the fluid medium , combined with analytical balance weighing and micrometer sounding, can complete the determination of apparent density; easy to operate, solid fluid is added at one time, and only need to turn the bottle upside down and reset when using, you can measure △H ( Hz - H y ), the test accuracy is 0.05-0.001mm; the practicability is strong. According to the methodology research, the reproducibility RSD of the method using soybean as the sample sample is 0.96%, and the accuracy of using the pycnometer method as the control is 99.81 %.
附图说明 Description of drawings
图1为测量装置结构图。 Figure 1 is a structural diagram of the measuring device.
图中，1-下瓶体，2-中瓶体，3-上瓶体，4-金属套箍，5-量程管， 6 -数显深度千分尺。 In the figure, 1-lower bottle body, 2-middle bottle body, 3-upper bottle body, 4-metal ferrule, 5-range tube, 6-digital depth micrometer.
具体实施方式 Detailed ways
下面结合具体实施方式对本发明进行详细的说明。 The present invention will be described in detail below in combination with specific embodiments.
本发明涉及的普适固体物视密度的测定方法，利用测定装置，填充固态流体，通过体积置换方式实现。 The method for measuring the apparent density of a universal solid object involved in the present invention uses a measuring device, fills it with solid fluid, and realizes it through volume replacement.
所述固态流体由以下步骤制得： Described solid fluid is made by following steps:
步骤一：固态流体原料的选择： Step 1: Selection of solid fluid raw materials:
选用自身流动较好的矿物、植物及人工制备的球形或类球形物质； Choose minerals, plants and artificially prepared spherical or spherical substances with good flow;
步骤二：预处理与粒径分级： Step 2: Pretreatment and particle size classification:
对选用的固态流体原料进行手工预处理，用自然筛分或研磨筛分进行粒径分级，粒径范围为1-0.36mm，得到试样； The selected solid fluid raw materials are manually pretreated, and the particle size classification is carried out by natural sieving or grinding sieving, and the particle size range is 1-0.36mm to obtain samples;
步骤三：流化处理： Step 3: Fluidization:
在步骤二所得的试样中加入固态或液态助流剂，旋转、打磨，进行流化处理，助流剂的用量为0.0-5.0%，得到固态流体； Adding a solid or liquid flow aid to the sample obtained in step 2, rotating, grinding, and performing fluidization treatment, the amount of the flow aid is 0.0-5.0%, to obtain a solid fluid;
步骤四：固态流体质量确认： Step 4: Solid fluid quality confirmation:
测定所得固态流体的粒径、休止角和夯实时间，符合粒径范围为1-0.36mm、休止角为20-45°、夯实时间为0.5-5min的确定为适用固态流体。 Measure the particle size, angle of repose, and tamping time of the obtained solid fluid. If the particle size range is 1-0.36mm, the angle of repose is 20-45°, and the tamping time is 0.5-5min, it is determined to be suitable for solid fluid.
上述方法中涉及的普适固体物视密度的测定装置，自下而上包括下瓶体1、中瓶体2和上瓶体3，中瓶体2作为下瓶体1和上瓶体3的连接段。下瓶体1顶端和上瓶体3底端均设置有外螺纹，中瓶体2上下两端均设置有内螺纹，下瓶体1和上瓶体3均通过螺纹连接于中瓶体2，形成分体式、葫芦形的容器。 The device for measuring the apparent density of universal solid objects involved in the above method comprises a lower bottle body 1, a middle bottle body 2 and an upper bottle body 3 from bottom to top, and the middle bottle body 2 is used as a part of the lower bottle body 1 and the upper bottle body 3. connect segment. Both the top of the lower bottle body 1 and the bottom end of the upper bottle body 3 are provided with external threads, the upper and lower ends of the middle bottle body 2 are all provided with internal threads, and the lower bottle body 1 and the upper bottle body 3 are connected to the middle bottle body 2 by threads. Form a split type, gourd-shaped container.
下瓶体1为不透明件，材质为丙烯腈-丁二烯-苯乙烯（ABS）塑料，颜色为黑色。上瓶体3为半透明件，材质为聚丙烯（PP）塑料，颜色为乳白色，上端口为研磨平面 The lower bottle body 1 is an opaque part made of acrylonitrile-butadiene-styrene (ABS) plastic, and the color is black. The upper bottle body 3 is a translucent piece made of polypropylene (PP) plastic, the color is milky white, and the upper port is a grinding plane
中瓶体2直径小于下瓶体1和上瓶体3，中瓶体2中设置有水平的固定筛网，材质均为金属。上瓶体3顶部设置有量程管5，为透明件，材质为玻璃，下端口为研磨平面，上端口为有翻边研磨平面。上瓶体3与量程管5通过金属套箍4连接。 The diameter of the middle bottle body 2 is smaller than that of the lower bottle body 1 and the upper bottle body 3, and the middle bottle body 2 is provided with a horizontal fixed screen made of metal. The top of the upper bottle body 3 is provided with a measuring range tube 5, which is a transparent part made of glass, the lower port is a grinding plane, and the upper port is a grinding plane with flanging. The upper bottle body 3 is connected with the measuring range tube 5 through the metal ferrule 4 .
测量过程中，量程管5顶端设置数显深度千分尺6；数据测量后，量程管5顶端设置橡胶塞。 During the measurement process, a digital display depth micrometer 6 is set on the top of the range tube 5; after data measurement, a rubber stopper is set on the top of the range tube 5.
上述测定装置的具体测定方法，由以下步骤实现： The specific measuring method of above-mentioned measuring device is realized by the following steps:
步骤一：组装普适固体物视密度的测定装置： Step 1: Assemble the device for measuring the apparent density of universal solid objects:
自下而上组装下瓶体1、中瓶体2和上瓶体3，中瓶体2作为下瓶体1和上瓶体3的连接段，中瓶体2中安装水平的固定筛网； Assemble the lower bottle body 1, the middle bottle body 2 and the upper bottle body 3 from bottom to top, the middle bottle body 2 is used as the connection section between the lower bottle body 1 and the upper bottle body 3, and a horizontal fixed screen is installed in the middle bottle body 2;
下瓶体1顶端和上瓶体3底端均设置有外螺纹，中瓶体2上下两端均设置有内螺纹，下瓶体1和上瓶体3均通过螺纹连接于中瓶体2； Both the top of the lower bottle body 1 and the bottom end of the upper bottle body 3 are provided with external threads, and the upper and lower ends of the middle bottle body 2 are provided with internal threads, and the lower bottle body 1 and the upper bottle body 3 are connected to the middle bottle body 2 by threads;
上瓶体3顶部通过金属套箍4连接量程管5； The top of the upper bottle body 3 is connected to the measuring range tube 5 through the metal ferrule 4;
步骤二：各部件体积的确定： Step 2: Determination of the volume of each component:
以固定筛网分界，确定下瓶体1、上瓶体3及量程管5三部分的体积，设下瓶体1总体积为V，上瓶体3体积为V1，待测物真实体积为V2，量程管5体积为V3； Determine the volumes of the lower bottle body 1, upper bottle body 3 and range tube 5 with a fixed screen, set the total volume of the lower bottle body 1 as V, the volume of the upper bottle body 3 as V 1 , and the real volume of the object to be measured is V 2 , the volume of the range tube 5 is V 3 ;
步骤三：量程管的标化： Step 3: Standardization of the range tube:
量程管5顶端安装数显深度千分尺6，室温下用量筒向测定装置中加水至距量程管5下端高度为h处，在此处标记下基线，然后用校正过的滴定管滴加体积为VB的水，滴加时在4、8、12mL处各标记一个圆点，并在VB处标记上基线，用数显深度千分尺6准确量度上、下基线间的距离，记为Hs-x；以下基线处为基点0，用数显深度千分尺6准确量度0、4、8、12、VB mL处的距离，通过线性回归得出线性相关系数为1，方为合格； A digital display depth micrometer 6 is installed on the top of the measuring range tube 5. At room temperature, use a measuring cylinder to add water to the measuring device to a height h from the lower end of the measuring range tube 5, mark the baseline here, and then use a calibrated burette to drop the volume V B When adding water, mark a dot at 4, 8, and 12 mL respectively, and mark the upper baseline at V B , and use a digital depth micrometer 6 to accurately measure the distance between the upper and lower baselines, which is recorded as Hs-x; The following baseline is the base point 0, and the distances at 0, 4, 8, 12, and V B mL are accurately measured with a digital display depth micrometer 6, and the linear correlation coefficient obtained through linear regression is 1, which is qualified;
步骤四：装载固态流体： Step 4: Load solid fluid:
取下数显深度千分尺6，取固态流体，在夯实条件下，借助锥形漏斗从量程管5上端处加入，边加边夯实，直至加至量程管5下刻度线；安装数显深度千分尺6测量固态流体顶部至量程管5上基线的距离，记为Hz； Take off the digital display depth micrometer 6, take the solid fluid, and add it from the upper end of the range tube 5 with the help of a tapered funnel under compaction conditions, and tamp it while adding, until it reaches the lower scale line of the range tube 5; install the digital display depth micrometer 6 Measure the distance from the top of the solid fluid to the baseline on the measuring range tube 5, denoted as Hz;
步骤五：待测物体积的测定： Step 5: Determination of the volume of the object to be tested:
取下数显深度千分尺6，用橡胶瓶塞盖住量程管5上口，将测定装置从正立转位成倒立，拧下下瓶体1，拧下中瓶体2，将装入准确称重的待测物装于下瓶体1中，拧上中瓶体2，与上瓶体3相连，拧紧各连接处，翻转测定装置，复位于正立，超声夯实；安装数显深度千分尺6测量待测物及固态流体混合体的顶部至量程管上基线的距离，记为Hy； Take off the digital display depth micrometer 6, cover the upper opening of the measuring range tube 5 with a rubber stopper, turn the measuring device from upright to upside down, unscrew the lower bottle body 1, unscrew the middle bottle body 2, and put the measuring device into the accurate scale. Put the heavy object to be tested in the lower bottle body 1, screw on the middle bottle body 2, connect with the upper bottle body 3, tighten the joints, turn over the measuring device, return to the upright position, and tamp it ultrasonically; install the digital display depth micrometer 6 Measure the distance from the top of the analyte and solid-fluid mixture to the baseline on the measuring range tube, denoted as Hy;
用分析天平称量待测物质量，以固态流体为流体，用测定装置测定待测物体积，然后按下式计算，得出待测物视密度： Weigh the mass of the object to be measured with an analytical balance, use the solid fluid as the fluid, measure the volume of the object to be measured with a measuring device, and then calculate according to the following formula to obtain the apparent density of the object to be measured:
式中： In the formula:
w为待测物重量,单位为g； w is the weight of the object to be measured, in g;
Hs-x为上、下基线间的距离，单位为mm； H sx is the distance between the upper and lower baselines, in mm;
Hz为夯实后固态流体顶部至测量管上基线的距离，单位为mm； H z is the distance from the top of the solid fluid after tamping to the baseline on the measuring tube, in mm;
Hy为加入待测物后，重新夯实后固态流体顶部至测量管上基线的距离，单位为mm； H y is the distance from the top of the solid fluid to the baseline on the measuring tube after retamping after adding the object to be tested, in mm;
VB为测量管上、下基线间经标定的体积，单位为mL； V B is the calibrated volume between the upper and lower baselines of the measuring tube, in mL;
为温度影响系数，室温下，取为1。 is the temperature influence coefficient, at room temperature, Take it as 1.
实施例1： Example 1:
用分析天平称取山药6.30g，取经流化处理的D101树脂作为固态流体，测得Hs-x =31.78mm，Hz-Hy =16.66mm，计算得山药的视密度为0.801。 Weigh 6.30g of yam with an analytical balance, take the fluidized D101 resin as a solid fluid, measure H sx =31.78mm, H z -H y = 16.66mm, and calculate the apparent density of yam to be 0.801.
实施例2： Example 2:
用分析天平称取黄芩4.20g，取滑石粉作为固态流体，测得Hs-x =31.78mm，Hz-Hy =13.72mm，计算得黄芩的视密度为0.649。 Weigh 4.20g of Scutellaria baicalensis with an analytical balance, take talcum powder as a solid fluid, measure H sx =31.78mm, H z -H y = 13.72mm, and calculate the apparent density of Scutellaria baicalensis as 0.649.
实施例3： Example 3:
用分析天平称取连翘3.40g，取石英砂作为固态流体，测得Hs-x =31.78mm，Hz-Hy =20.58mm，计算得连翘的视密度为0.350。 Weigh 3.40g of Forsythia with an analytical balance, take quartz sand as solid fluid, measure H sx = 31.78mm, H z -H y = 20.58mm, and calculate the apparent density of Forsythia to be 0.350.
本发明的内容不限于实施例所列举，本领域普通技术人员通过阅读本发明说明书而对本发明技术方案采取的任何等效的变换，均为本发明的权利要求所涵盖。 The content of the present invention is not limited to the examples listed, and any equivalent transformation of the technical solution of the present invention adopted by those of ordinary skill in the art by reading the description of the present invention is covered by the claims of the present invention.
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