阅读说明：本技术 一种不规则多孔物体密度测定方法及装置 (Method and device for measuring density of irregular porous object ) 是由 吴磊 杜屏 张明星 周小虎 周俊兰 袁卫 于 2021-07-29 设计创作，主要内容包括：本发明公开了一种不规则多孔物体密度测定方法及装置,测定方法利用测定装置,在测定装置的容器中填充固态流体和待测物体,通过排沙方式实现；使用测定装置检测固态流体的高度变化；测定装置设置有旋转装置,通过旋转装置多次旋转固态流体和待测物体,使固态流体和待测物体充分接触,使用多次测量数据求取算术平均值,确定待测物体的体积；结合待测物体的质量,对待测物体进行表观密度测定,通过此方法可以减小固态流体与待测物体间由于接触不全而带来的体积误差,进而求出其表观密度。(The invention discloses a method and a device for measuring the density of an irregular porous object, wherein the measuring method utilizes a measuring device, fills solid fluid and an object to be measured in a container of the measuring device, and is realized by a sand discharging mode; detecting a change in height of the solid fluid using the assay device; the measuring device is provided with a rotating device, the solid fluid and the object to be measured are rotated for multiple times through the rotating device, the solid fluid is fully contacted with the object to be measured, the arithmetic mean value is obtained by using multiple times of measurement data, and the volume of the object to be measured is determined; the method can reduce the volume error between the solid fluid and the object to be measured caused by incomplete contact, and further calculate the apparent density of the object to be measured.)

1. A method for measuring the density of an irregular porous object, which is performed by using a measuring apparatus for the density of an irregular porous object, the measuring apparatus being provided with a rotating means for rotating a container filled with a solid fluid and an object to be measured, comprising the steps of:

step 1, placing a device for measuring the density of an irregular porous object on a stable surface and leveling;

step 2, filling a container of the device for measuring the density of the irregular porous object with solid fluid, and reading the volume reading of the solid fluid at the moment and recording the volume reading as V₀；

Step 3, putting the object to be measured into a container of the irregular porous object density measuring device, measuring the mass at the moment, and recording the mass as M₀；

Step 4, rotating the container of the device for measuring the density of the irregular porous object by 180 degrees, and then rotating the container by 180 degrees again; the volume reading of the solid fluid at this time is taken and recorded as V₁；

Step 5, repeatedly rotating the container of the measuring device of the density of the irregular porous object n times, and recording data V_2、V₃…V_n；

Step 6, using a formulaCalculating the apparent density of the object to be measured; wherein rho is the apparent density of the object to be measured.

2. The irregular porous object density measuring method according to claim 1, wherein the measuring apparatus comprises: the measuring unit, the rotary bracket and the measuring cylinder; wherein the content of the first and second substances,

the measuring unit is used for measuring quality;

the rotating bracket is arranged on the measuring unit; the rotating bracket is provided with a hinged rotating shaft;

the measuring cylinder comprises a cylinder body, a first cover body and a second cover body; wherein, both ends of the cylinder body are communicated and provided with an opening part;

the middle part of the cylinder body is rotationally connected to a hinge rotating shaft of the rotating bracket; the cylinder body is provided with bidirectional scales; the first cover body and the second cover body are respectively detachably connected to two ends of the cylinder body and used for sealing the opening part of the cylinder body; the first cover body is provided with a plurality of sand leaking holes which can be opened and closed.

3. The irregular porous object density determination method according to claim 2, wherein the measuring unit comprises an electronic scale and a receiving tray; wherein, the bottom of the electronic scale is provided with a leveling mechanism; the electronic scale is detachably connected with the rotating bracket through a sucking disc; the material receiving plate is placed on the electronic scale and is positioned below the measuring cylinder.

4. The method for measuring the density of an irregular porous object according to claim 2, wherein the first cover comprises a first top cover and a first bottom cover; the first top cover and the first bottom cover are rotationally connected; the first top cover and the first bottom cover are correspondingly provided with a plurality of sand leaking holes.

5. The method according to claim 4, wherein the second cover comprises a second top cover and a second bottom cover; the second top cover and the second bottom cover are rotatably connected; and a plurality of sand leakage holes are correspondingly formed in the second top cover and the second bottom cover.

6. The method for measuring the density of an irregular porous object according to claim 3,

the step 2 specifically comprises

Step 2.1, rotating the measuring cylinder until one end is vertically upward and the other end is vertically downward; closing the sand leakage hole;

step 2.2, opening the cover body at the end which is vertically upward, and mainly putting the solid fluid into the measuring cylinder; the volume reading of the solid fluid at this time is taken and recorded as V₀(ii) a Mounting the cover body at one end which is vertically upward on the cylinder body;

the step 3 specifically comprises

Step 3.1, resetting the electronic scale;

step 3.2, opening the sand leakage hole to enable the solid fluid to fall into the material receiving plate along the sand leakage hole; when the residual volume of the solid fluid in the measuring cylinder reaches the specified requirement, closing the sand leakage hole to ensure that the solid fluid does not fall out of the sand leakage hole any more;

step 3.3, opening the cover body at the end which is vertically upward, putting the object to be measured into the measuring cylinder, reading the quality reading of the electronic scale at the moment, and recording the quality reading as M₀(ii) a The solid fluid in the material receiving disc is filled into the measuring cylinder again; and (3) mounting the cover body at the end which is vertically upward on the cylinder body, and keeping a sealing state.

7. The method for measuring the density of an irregular porous object according to claim 6, wherein in the step 3.2, when the residual volume of the solid fluid in the measuring cylinder is 1/3 of the total volume, the sand leaking holes are closed.

Technical Field

The invention belongs to the technical field of density measurement methods, and particularly relates to a method and a device for measuring the density of an irregular porous object.

Background

Apparent density is an important detection index of porous objects, but for irregular porous objects such as coke, ore and the like, the existence of pores cannot be directly measured by a drainage method, and the measurement difficulty is high, so that a measurement method of firstly sealing wax and then draining water appears, but the measurement process is complicated and the efficiency is low. The sand discharging method shows advantages in apparent density measurement because sand particles cannot enter the inside of the pores, but during measurement, a unfilled corner often appears between sand and an object to be measured, the object to be measured cannot be completely wrapped, and measurement errors occur.

Therefore, the invention provides an improved sand discharge method and a device used by the method, so as to reduce the complexity of measurement and improve the reliability of measurement.

Disclosure of Invention

In order to solve the problems, the invention provides a method and a device for measuring the density of an irregular porous object.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a method for measuring the density of an irregular porous object, further, the measuring method is carried out by using a measuring device for the density of the irregular porous object, the measuring device is provided with a rotating device for rotating a container filled with a solid fluid and an object to be measured, and the method comprises the following steps:

step 1, placing a device for measuring the density of an irregular porous object on a stable surface and leveling;

step 2, filling a container of the device for measuring the density of the irregular porous object with solid fluidReading the volume of the solid fluid at that time and recording as V₀；

Step 3, putting the object to be measured into a container of the irregular porous object density measuring device, measuring the mass at the moment, and recording the mass as M₀；

Step 4, rotating the container of the device for measuring the density of the irregular porous object by 180 degrees, and then rotating the container by 180 degrees again; the volume reading of the solid fluid at this time is taken and recorded as V₁；

Step 5, repeatedly rotating the container of the measuring device of the density of the irregular porous object n times, and recording data V_2、V₃…V_n；

Step 6, using a formulaCalculating the apparent density of the object to be measured; wherein rho is the apparent density of the object to be measured. Further, the assay device comprises:

the measuring unit, the rotary bracket and the measuring cylinder; wherein the content of the first and second substances,

the measuring unit is used for measuring quality;

the rotating bracket is arranged on the measuring unit; the rotating bracket is provided with a hinged rotating shaft;

the measuring cylinder comprises a cylinder body, a first cover body and a second cover body; wherein, both ends of the cylinder body are communicated and provided with an opening part; the middle part of the cylinder body is rotationally connected to a hinge rotating shaft of the rotating bracket; the cylinder body is provided with bidirectional scales; the first cover body and the second cover body are respectively detachably connected to two ends of the cylinder body and used for sealing the opening part of the cylinder body; the first cover body is provided with a plurality of sand leaking holes which can be opened and closed.

Further, the measuring unit comprises an electronic scale and a receiving tray; wherein, the bottom of the electronic scale is provided with a leveling mechanism; the electronic scale is detachably connected with the rotating bracket through a sucking disc; the material receiving plate is placed on the electronic scale and is positioned below the measuring cylinder.

Further, the first cover body comprises a first top cover and a first bottom cover; the first top cover and the first bottom cover are rotationally connected; the first top cover and the first bottom cover are correspondingly provided with a plurality of sand leaking holes.

Further, the second cover body comprises a second top cover and a second bottom cover; the second top cover and the second bottom cover are rotatably connected; and a plurality of sand leakage holes are correspondingly formed in the second top cover and the second bottom cover.

Further, the step 2 specifically comprises

Step 2.1, rotating the measuring cylinder until one end is vertically upward and the other end is vertically downward; closing the sand leakage hole;

step 2.2, opening the cover body at the end which is vertically upward, and mainly putting the solid fluid into the measuring cylinder; the volume reading of the solid fluid at this time is taken and recorded as V₀(ii) a Mounting the cover body at one end which is vertically upward on the cylinder body;

the step 3 specifically comprises

Step 3.1, resetting the electronic scale;

step 3.2, opening the sand leakage hole to enable the solid fluid to fall into the material receiving plate along the sand leakage hole; when the residual volume of the solid fluid in the measuring cylinder reaches the specified requirement, closing the sand leakage hole to ensure that the solid fluid does not fall out of the sand leakage hole any more;

step 3.3, opening the cover body at the end which is vertically upward, putting the object to be measured into the measuring cylinder, reading the quality reading of the electronic scale at the moment, and recording the quality reading as M₀(ii) a The solid fluid in the material receiving disc is filled into the measuring cylinder again; and (3) mounting the cover body at the end which is vertically upward on the cylinder body, and keeping a sealing state.

Further, in step 3.2, when the residual volume of the solid fluid in the measuring cylinder is 1/3 of the total volume, the sand leakage hole is closed. The invention has the following beneficial effects:

firstly, when the apparent density of the irregular porous object is measured, a user can measure the volume of the object to be measured for multiple times through the rotating barrel and obtain an arithmetic mean value, and the method can reduce the volume error caused by incomplete contact between the solid fluid and the object to be measured so as to obtain the apparent density; the device has the advantages of simple overall structure, convenient operation, high testing efficiency, good result reliability and suitability for popularization and use.

And secondly, the measuring device is also provided with a measuring unit for measuring the mass, so that the mass of the test object can be directly obtained, an additional measuring tool is not needed, and the measuring error is reduced.

Thirdly, a cover plate at one end of the measuring cylinder is provided with an openable sand leakage hole; when the sand is discharged, the sand does not need to be dumped, the static state of the measuring cylinder is not changed, the sand discharging amount is convenient to control, and the measuring error is further reduced; pouring the discharged solid fluid into the measuring cylinder again to ensure that the object to be measured is in the solid fluid, so that the object to be measured can be conveniently and fully contacted with the solid fluid; the openable sand leakage hole does not affect the sealing performance of the measuring cylinder.

Fourthly, arranging openable sand leakage holes on the cover plates at the two ends of the measuring cylinder; the user does not need to specially adjust the direction, and the universal property and the operability are higher when the device is used.

Drawings

FIG. 1 is a schematic structural view of a device for measuring the density of an irregular porous object according to the present invention;

FIG. 2 is a schematic structural view of a first top cover;

FIG. 3 is a flow chart of a method for determining the density of an irregular porous object according to the present invention;

description of the symbols:

1. the sand filter comprises an electronic scale, 2. a rotating bracket, 3. a hinged rotating shaft, 4. a cylinder body, 5. a second cover body, 6. a first cover body, 7. a material receiving disc, 8. a leveling mechanism and 9. a sand leakage hole.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

As shown in fig. 1-3, a method for measuring density of irregular porous object, which is implemented by filling solid fluid and object to be measured in a sand-discharging manner in a container of a measuring device by using the measuring device, wherein the object to be measured is coke, ore, etc.; the solid fluid comprises fine sand with uniform particles; detecting a change in height of the solid fluid using the assay device; the measuring device is provided with a rotating device, the solid fluid and the object to be measured are rotated for multiple times through the rotating device, the solid fluid is fully contacted with the object to be measured, the arithmetic mean value is obtained by using multiple times of measurement data, and the volume of the object to be measured is determined; and (4) combining the mass of the object to be measured, and measuring the apparent density of the object to be measured.

The density measuring device for the irregular porous object comprises a measuring unit, a rotating bracket 2 and a measuring cylinder; the measuring unit is used for measuring the quality and comprises an electronic scale 1 and a receiving tray 7, and the bottom of the electronic scale 1 is provided with a leveling mechanism 8 for leveling the electronic scale; the electronic scale is detachably connected with the rotating bracket 2 through a sucking disc; the material receiving plate 7 is placed on the electronic scale 1 and is positioned below the measuring cylinder.

The rotating bracket 2 is arranged on the electronic scale 1; the rotating bracket 2 is provided with a hinge rotating shaft 3, preferably, the hinge rotating shaft 3 of the rotating bracket 2 is symmetrically arranged, and the rotating axis of the hinge rotating shaft 3 is perpendicular to the axis of the measuring cylinder.

The measuring cylinder comprises a cylinder body 4 with two through ends, a first cover body 6 and a second cover body 5; wherein, the middle part of the cylinder body 4 is rotationally connected on the hinge rotating shaft 3 of the rotating bracket 2, and the cylinder body 4 is provided with bidirectional scales; the first cover body 6 and the second cover body 5 are respectively detachably connected to two ends of the cylinder body 4 and used for sealing the opening of the cylinder body 4; a first cover 6 including a first top cover and a first bottom cover; the first top cover and the first bottom cover are rotationally connected; a plurality of mutually matched sand leakage holes 9 are correspondingly formed in the first top cover and the first bottom cover; by rotating the first top cover, the sand leakage holes in the first top cover and the first bottom cover are mutually staggered or communicated, so that the sealing and sand leakage functions are realized; the sand leakage hole which can be opened and closed is arranged, so that the sand does not need to be toppled during sand discharge, the static state of the measuring cylinder is not changed, the sand discharge amount is conveniently controlled, and the measurement error is further reduced; meanwhile, the sealing performance of the measuring cylinder cannot be influenced; in order to improve the usability and operability of the measuring device, the second cover body comprises a second top cover and a second bottom cover; the second top cover is rotatably connected with the second bottom cover; a plurality of mutually agreeable sand leakage holes 9 are correspondingly formed in the second top cover and the second bottom cover, a user does not need to rotate to adjust, and the cover plates at the two ends of the measuring cylinder are provided with openable sand leakage holes.

The measuring process of the irregular porous object density measuring device comprises the following steps:

step 1, placing a device for measuring the density of an irregular porous object on a stable surface; the measuring device is leveled by a leveling mechanism 8 at the bottom of the electronic scale 1.

Step 2.1, rotating the measuring cylinder until the first cover body faces downwards and the second cover body faces upwards; and rotating the first top cover to stagger the sand leakage holes on the first top cover and the first bottom cover, and closing the sand leakage holes.

Step 2.2, opening the second cover body, mainly putting the solid fluid into the measuring cylinder, and swinging the measuring cylinder by a small amplitude to smooth the solid fluid; the volume reading of the solid fluid at this time is taken and recorded as V₀(ii) a And mounting the second cover body on the cylinder body.

And 3.1, clearing the electronic scale.

Step 3.2, rotating the first top cover, and enabling the sand leaking holes in the first top cover and the first bottom cover to be opposite, wherein the sand leaking holes are communicated with each other; the solid fluid is dropped into the material receiving plate along the sand leaking hole; after the residual volume of the solid fluid in the measuring cylinder reaches the specified requirement, preferably, when the solid fluid in the measuring cylinder is residual 1/3, the first top cover is rotated to stagger the sand leaking holes on the first top cover and the first bottom cover, and no solid fluid falls out of the sand leaking holes.

Step 3.3, opening the second cover body, putting the object to be measured into the measuring cylinder, reading the quality reading of the electronic scale at the moment, and recording the quality reading as M₀(ii) a The solid fluid in the material receiving plate is filled into the measuring cylinder again, and the object to be measured is ensured to be positioned in the solid fluid; and mounting the second cover body on the cylinder body, and keeping a sealing state.

Step 4, rotating the measuring cylinder by 180 degrees, then rotating the measuring cylinder by 180 degrees again, and swinging the measuring cylinder by a small amplitude to smooth the solid fluid; the volume reading of the solid fluid at this time is taken and recorded as V₁。

Step 5, repeating step 7 n times, and recording data V_2、V₃…V_n。

Step 6, using a formulaCalculating the apparent density of the object to be measured; wherein rho is the apparent density of the object to be measured.

The user can measure the volume of the object to be measured for multiple times through the rotating barrel and obtain the arithmetic mean value, and the method can reduce the volume error caused by incomplete contact between the solid fluid and the object to be measured so as to obtain the apparent density of the object to be measured.

The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention, and any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention; accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.