CN107014712B - Method and device for detecting content of flaky particles of lithotripter - Google Patents
Method and device for detecting content of flaky particles of lithotripter Download PDFInfo
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- CN107014712B CN107014712B CN201710375130.7A CN201710375130A CN107014712B CN 107014712 B CN107014712 B CN 107014712B CN 201710375130 A CN201710375130 A CN 201710375130A CN 107014712 B CN107014712 B CN 107014712B
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- 239000002245 particle Substances 0.000 title claims abstract description 108
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- 238000004458 analytical method Methods 0.000 claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 238000012216 screening Methods 0.000 claims abstract description 14
- 239000004575 stone Substances 0.000 claims description 24
- 239000011148 porous material Substances 0.000 claims description 11
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- 238000007873 sieving Methods 0.000 claims description 6
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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Abstract
The invention discloses a method and a device for detecting the content of lithotriptic needle-shaped particles, comprising the following steps: screening by a square hole sieve, and recording the particle masses M1-Mn of the screened particles with different particle size grades on each standard square hole sieve; screening by a parallel hole sieve, and recording the quality G1-Gn of needle-shaped particles in particles with different granularity grades of the screened particles on each parallel Kong Shaixia tray; calculating to obtain the contents of the lithotriptic needle-shaped particles with different granularity grades: M1/G1-Mn/Gn. The device comprises a vibrating device (13), a motor (11), an analysis screen fixing frame (7), an analysis screen (9) and a tray (8), wherein the motor (11) is connected with the vibrating device (13) and drives the vibrating device to vibrate for screening. The content of the flaky particles of the lithotripter needle can be automatically detected through the instrument, and the result can be automatically calculated to reduce the labor intensity, improve the detection efficiency and reduce the influence of human factors.
Description
Technical Field
The invention relates to the technical field of mechanical structures and detection equipment, in particular to a method and a device for detecting the content of broken stone needle-shaped particles.
Background
The content of the needle-shaped particles in the broken stone has great influence on the strength, stability and the like of the roadbed or the concrete, and the concrete requirements on the needle-shaped particle content in the broken stone are all met by the graded broken stone on the surface layer of the railway roadbed, the graded broken stone on the transition section of the roadbed, the railway broken stone ballasts, the highway cement concrete, the hydraulic concrete construction specifications and the like. At present, the content of needle-shaped particles in crushed stones is detected mainly by a standard gauge method and a vernier caliper method.
When the gauge method is used for detecting the content of the needle-shaped particles of the crushed stone, firstly, weighing the crushed stone, sieving the crushed stone with a sieve of 4.75mm, then visually picking out particles which are close to a cube shape, detecting the needle-shaped particles of a sample by the needle-shaped gauge, and picking out the needle-shaped particles, wherein the length of the needle-shaped particles is larger than the corresponding interval on the needle-shaped gauge and cannot pass through the needle-shaped gauge; detecting the flaky particles of the sample by the non-needle particles with corresponding intervals on the needle-shaped gauge, and picking out the particles with the thickness smaller than the corresponding hole width on the flaky gauge to pass through, namely the flaky particles; the percentage of the needle-shaped particle mass to the total mass of the crushed stone sample is the content of the crushed stone needle-shaped particle.
When the vernier caliper is used for detection, crushed stones are weighed and sieved by a 4.75mm sieve, then particles which are close to the cube shape are selected by visual inspection, and the rest aggregates possibly belonging to needle-shaped particles are measured, identified, recorded and counted by the vernier caliper according to the specified particle size; and finally, calculating the percentage of the mass of the needle-shaped particles to the total mass of the crushed stone sample, and taking the calculated percentage as the content of the crushed stone needle-shaped particles.
The above prior art has at least the following drawbacks: the screened particles need to be measured, identified and recorded manually one by one, so that the method has the advantages of large workload, complex operation, time and labor waste, easy omission and large influence of human factors on detection results.
Disclosure of Invention
The invention aims to provide a method and a device for detecting the content of flaky particles of a lithotripsy needle, which can automatically detect the content of flaky particles of the lithotripsy needle by an instrument, automatically calculate the result to reduce the labor intensity, improve the detection efficiency and reduce the influence of human factors.
The invention aims at realizing the following technical scheme:
a method for detecting the content of lithotripsy needle-shaped particles comprises the following steps:
screening by a square hole sieve, namely selecting a plurality of standard square hole sieves with different sieve hole sizes, sequentially placing the standard square hole sieves on a vibration device from top to bottom according to the hole diameters from large to small, arranging a tray at the lowest part of the standard square hole sieves, and vibrating and screening the broken stone needle-shaped particles from top to bottom; recording the particle masses M1-Mn of the sieved particles with different particle size grades on each standard square hole sieve; n represents the number of stages of the multi-stage different mesh sizes.
Screening by a parallel hole sieve, namely selecting a parallel hole sieve with the same multi-stage sieve pore size as a standard square hole sieve, wherein the sieve pore size of the parallel hole sieve of each stage is 1/2 of that of the standard square hole sieve; placing the parallel-hole sieves on a vibration device according to the aperture from large to small in sequence from top to bottom, and arranging a tray on each parallel Kong Shaixia; placing the sieved particles on the corresponding standard square hole sieves on the corresponding parallel hole sieves, and vibrating and sieving; recording the quality G1-Gn of needle-shaped particles in particles with different particle size grades of the sieved particles on each parallel Kong Shaixia tray;
calculating to obtain the contents of the lithotriptic needle-shaped particles with different granularity grades:
M1/G1～Mn/Gn。
the mesh sizes of the standard square-hole sieve are respectively as follows:
80 63, 50, 40, 31.5 or 32, 25, 20, 16, 12.5, 10,8,6.3,5,4;
the corresponding mesh sizes of the parallel-hole sieves are respectively as follows:
40 31.5, 25, 20, 16, 12.5, 10,8,6.3 or 6.25,5,4,3.15,2.5,2;
in mm.
The method also comprises the steps of automatically detecting the particle masses M1-Mn of different particle size grades and the needle-shaped particle masses G1-Gn in the particles of different particle size grades through a sensor; the data processing unit is used for automatically calculating the contents M1/G1-Mn/Gn of the lithotripter needle-shaped particles with different granularity levels, and a display is used for displaying the calculation result or printing the calculation result.
A broken stone needle slice particle content detection device comprises a vibration device 13, a motor 11, an analysis screen fixing frame 7, an analysis screen 9 and a tray 8;
the analysis screen fixing frame 7 is arranged on the vibration device 13, and the analysis screen 9 is arranged in the analysis screen fixing frame 7;
the analysis screen 9 comprises two groups, wherein one group is a standard square-hole screen with multiple stages of different screen hole sizes; the other group is a parallel-hole sieve with the same multi-stage sieve pore size as the standard square-hole sieve, and the sieve pore size of the parallel-hole sieve of each stage is 1/2 of that of the standard square-hole sieve;
the tray 8 is arranged below the analysis screen 9;
the motor 11 is connected with and drives the vibration device 13 to vibrate for screening.
The broken stone needle slice particle content detection device also comprises a tester 3 and a sensor 10, wherein the sensor 10 is arranged below the analysis screen fixing frame 7 or below each analysis screen 9 and the tray 8;
the tester 3 connects the sensor 10 with the motor 11 through a cable 12.
The tester 3 comprises a data processing unit, a signal amplifier, an A/D converter and a display 6; the signal detected by the sensor 10 is input to the data processing unit through the signal amplifier and the a/D converter, and the calculation result is output from the display 6 through the data processing unit.
The tester 3 also comprises a printer interface 4 and a computer interface 5, and the printer interface 4 and the computer interface 5 are connected with a data processing unit.
According to the technical scheme provided by the invention, the method and the device for detecting the content of the flaky particles of the lithotripter needle provided by the embodiment of the invention can automatically detect the content of the flaky particles of the lithotripter needle through an instrument, and can automatically calculate the result to reduce the labor intensity, improve the detection efficiency and reduce the influence of human factors.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a lithotripter needle particle content detection device provided by an embodiment of the invention;
fig. 2 is a schematic diagram of a tester of the lithotripter needle sheet particle content detection device according to the embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
Referring to fig. 1, a method for detecting the content of flaky particles in a lithotripter comprises the following steps:
square hole sieve screening, the purpose of this screening is to divide the broken stone needle slice particle sample into different granularity (also called particle size) grades and measure the particle quality M1 ~ Mn of different granularity grades. n is a natural number and represents the number of stages of different screen sizes. Specifically, selecting a plurality of stages of standard square hole sieves with different sieve hole sizes, sequentially placing the standard square hole sieves on a vibration device from top to bottom according to the pore diameters from large to small, arranging a tray at the lowest part of the standard square hole sieves, and vibrating and sieving the broken stone needle-shaped particles from top to bottom; recording the particle masses M1-Mn of the sieved particles with different particle size grades on each standard square hole sieve; taking 12 stages as an example, then: m1, M2, M3 … … M13, M12;
the parallel hole sieve is used for sieving, and the purpose of the sieve is to screen out needle-shaped particles with different granularity levels in a crushed stone needle-shaped particle sample and test the quality G1-Gn of the needle-shaped particles with different granularity levels. Specifically, selecting a parallel-hole sieve with the same multi-stage sieve pore size as a standard square-hole sieve, wherein the sieve pore size of the parallel-hole sieve of each stage is 1/2 of that of the standard square-hole sieve; placing the parallel-hole sieves on a vibration device according to the aperture from large to small in sequence from top to bottom, and arranging a tray on each parallel Kong Shaixia; placing the sieved particles on the corresponding standard square hole sieves on the corresponding parallel hole sieves, and vibrating and sieving; recording the quality G1-Gn of needle-shaped particles in particles with different particle size grades of the sieved particles on each parallel Kong Shaixia tray; taking 12 stages as an example, then: g1, G2, G3 … … G13, G12;
calculating to obtain the contents of the lithotriptic needle-shaped particles with different granularity grades:
M1/G1～Mn/Gn。
M1/G1, M2/G2, M3/G3 … … M13/G13, M12/G12;
in this example, taking 12 grades as an example, the mesh sizes of the standard square hole sieves are respectively as follows, and the unit is mm:
80 63, 50, 40, 31.5 or 32, 25, 20, 16, 12.5, 10,8,6.3,5,4;
it should be noted that the 31.5 or 32 grade is that the general products will not have 31.5 or 32 at the same time, so two choices are provided, that is, the mesh size of the parallel-hole sieve is 1/2 of that of the standard square-hole sieve, not strictly 1/2 in mathematical sense, and products with similar types can be selected in consideration of actual mechanical industry conditions.
The corresponding mesh sizes of the parallel-hole sieves are respectively as follows, and the unit is mm:
40 31.5, 25, 20, 16, 12.5, 10,8,6.3 or 6.25,5,4,3.15,2.5,2;
it should be noted that the reasons of the 6.3 or 6.25 grades are the same, and the general products do not have 6.3 or 6.25 at the same time, so two alternatives are provided, that is, the mesh size of the parallel-hole sieve is 1/2 of that of the standard square-hole sieve, not strictly 1/2 in mathematical sense, and the actual mechanical industry condition is considered, so that products with similar types can be selected.
In addition, as the computer industry is very mature at present, the method can automatically detect the particle masses M1-Mn of different granularity levels and the needle-shaped particle masses G1-Gn in the particles of different granularity levels by means of a computer technology; the data processing unit is used for automatically calculating the contents M1/G1-Mn/Gn of the lithotripter needle-shaped particles with different granularity levels, and a display is used for displaying the calculation result or printing the calculation result.
As shown in fig. 1, the lithotripter needle slice particle content detection device comprises a vibration device 13, a motor 11, an analysis screen fixing frame 7, an analysis screen 9 and a tray 8; the analysis screen fixing frame 7 is arranged on the vibration device 13, and the analysis screen 9 is arranged in the analysis screen fixing frame 7;
the analysis screen 9 comprises two groups, wherein one group is a standard square-hole screen with multiple stages of different screen hole sizes; the other group is a parallel-hole sieve with the same multi-stage sieve pore size as the standard square-hole sieve, and the sieve pore size of the parallel-hole sieve of each stage is 1/2 of that of the standard square-hole sieve;
in this example, taking 12 grades as an example, the mesh sizes of the standard square hole sieves are respectively as follows, and the unit is mm:
80 63, 50, 40, 31.5 or 32, 25, 20, 16, 12.5, 10,8,6.3,5,4;
it should be noted that the 31.5 or 32 grade is that the general products will not have 31.5 or 32 at the same time, so two choices are provided, that is, the mesh size of the parallel-hole sieve is 1/2 of that of the standard square-hole sieve, not strictly 1/2 in mathematical sense, and products with similar types can be selected in consideration of actual mechanical industry conditions.
The corresponding mesh sizes of the parallel-hole sieves are respectively as follows, and the unit is mm:
40 31.5, 25, 20, 16, 12.5, 10,8,6.3 or 6.25,5,4,3.15,2.5,2;
it should be noted that the reasons of the 6.3 or 6.25 grades are the same, and the general products do not have 6.3 or 6.25 at the same time, so two alternatives are provided, that is, the mesh size of the parallel-hole sieve is 1/2 of that of the standard square-hole sieve, not strictly 1/2 in mathematical sense, and the actual mechanical industry condition is considered, so that products with similar types can be selected.
The tray 8 is arranged below the analysis screen 9; one tray 8 may be provided under all the analysis screens 9, or one tray 8 may be provided under each analysis screen 9.
The motor 11 is connected with and drives the vibration device 13 to vibrate for screening.
In addition, in order to realize automatic testing, the lithotripter needle-shaped particle content detection device also comprises a tester 3 and a sensor 10, wherein the sensor 10 is arranged below the analysis screen fixing frame 7 or below each analysis screen 9 and the tray 8;
the tester 3 connects the sensor 10 with the motor 11 through a cable 12.
According to the method of the embodiment, if the sensor 10 is only arranged below the analysis screen fixing frame 7, the data are measured in batches, if a standard square hole screen is taken down, the data are recorded once, and the difference value is calculated to obtain the particle masses M1-Mn of different particle size grades; and taking out the next tray 8, recording data once, and calculating a difference value to obtain the quality G1-Gn of the needle-shaped particles in the particles with different granularity levels.
According to the method of the embodiment, if the sensor 10 is arranged below each analysis screen 9 and the tray 8, the particle masses M1-Mn of different particle size grades and the needle-shaped particle masses G1-Gn of the particles of different particle size grades can be directly measured.
In addition, as shown in fig. 2, the tester 3 includes a data processing unit, a signal amplifier, an a/D converter and a display 6; the signal detected by the sensor 10 is input to the data processing unit through the signal amplifier and the a/D converter, and the calculation result is output from the display 6 through the data processing unit. The sensor 10 may use a pressure sensor and the signal collected is a mechanical signal. The display 6 may also show the current test progress, prompting the next operational step and related test data.
The tester 3 also comprises a printer interface 4 and a computer interface 5, and the printer interface 4 and the computer interface 5 are connected with a data processing unit. The printer interface 4 is used to connect a general-purpose printer or a micro printer, and print the result. The computer interface 5 is used to connect a computer to which test data may be transferred, stored or otherwise processed.
In addition, the tester 3 further includes a power switch 2 for switching the tester 3. The tester 3 further comprises a key 1 for operating input of the tester 3, setting a vibration time, and controlling the motor 11 by and through the data processing unit, and stopping automatically when the vibration is completed.
It should be noted that the data processing and vibration control of this patent are common knowledge techniques that a person skilled in the art should know, and this patent only applies its method, and will not be described in detail.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (2)
1. The method for detecting the content of the lithotripsy needle-shaped particles is characterized by comprising the following steps of:
screening by a square hole sieve, namely selecting a plurality of standard square hole sieves with different sieve hole sizes, sequentially placing the standard square hole sieves on a vibration device from top to bottom according to the hole diameters from large to small, arranging a tray at the lowest part of the standard square hole sieves, and vibrating and screening the broken stone needle-shaped particles from top to bottom; recording the particle masses M1-Mn of the sieved particles with different particle size grades on each standard square hole sieve; n represents the number of stages of different screen sizes;
screening by a parallel hole sieve, namely selecting a parallel hole sieve with the same multi-stage sieve pore size as a standard square hole sieve; placing the parallel hole sieves on a vibration device from top to bottom in sequence according to the aperture from large to small, and arranging a tray on each parallel Kong Shaixia; placing the sieved particles on the corresponding standard square hole sieves on the corresponding parallel hole sieves, and vibrating and sieving; recording the quality G1-Gn of needle-shaped particles in particles with different particle size grades of the sieved particles on each parallel Kong Shaixia tray;
calculating to obtain the contents of the lithotriptic needle-shaped particles with different granularity grades:
M1/G1～Mn/Gn；
the mesh sizes of the standard square-hole sieve are respectively as follows:
80 63, 50, 40, 31.5 or 32, 25, 20, 16, 12.5, 10,8,6.3,5,4;
the corresponding mesh sizes of the parallel-hole sieves are respectively as follows:
40 31.5, 25, 20, 16, 12.5, 10,8,6.3 or 6.25,5,4,3.15,2.5,2;
the unit is mm;
the method also comprises the steps of automatically detecting the particle masses M1-Mn of different particle size grades and the needle-shaped particle masses G1-Gn in the particles of different particle size grades through a sensor; the data processing unit is used for automatically calculating the contents M1/G1-Mn/Gn of the lithotripter needle-shaped particles with different granularity levels, and a display is used for displaying the calculation result or printing the calculation result.
2. A broken stone needle sheet particle content detection device for realizing the broken stone needle sheet particle content detection method according to claim 1, which is characterized by comprising a vibration device (13), a motor (11), an analysis screen fixing frame (7), an analysis screen (9) and a tray (8);
the analysis screen fixing frame (7) is arranged on the vibration device (13), and the analysis screen (9) is arranged in the analysis screen fixing frame (7);
the analysis screen (9) comprises two groups, wherein one group is a standard square-hole screen with multiple stages of different screen hole sizes; the other group is a parallel-hole sieve with the same multi-level sieve pore size as the standard square-hole sieve;
the tray (8) is arranged below the analysis screen (9);
the motor (11) is connected with and drives the vibration device (13) to vibrate for screening;
the device also comprises a tester (3) and a sensor (10), wherein the sensor (10) is arranged below the analysis screen fixing frame (7) or below each analysis screen (9) and the tray (8);
the tester (3) is connected with the sensor (10) and the motor (11) through a cable (12);
the tester (3) comprises a data processing unit, a signal amplifier, an A/D converter and a display (6); the signal detected by the sensor (10) is input into the data processing unit through the signal amplifier and the A/D converter, and the data processing unit processes the signal and outputs a calculation result through the display (6);
the tester (3) also comprises a printer interface (4) and a computer interface (5), and the printer interface (4) is connected with the computer interface (5) to form a data processing unit;
the mesh sizes of the standard square-hole sieve are respectively as follows:
80 63, 50, 40, 31.5 or 32, 25, 20, 16, 12.5, 10,8,6.3,5,4;
the corresponding mesh sizes of the parallel-hole sieves are respectively as follows:
40 31.5, 25, 20, 16, 12.5, 10,8,6.3 or 6.25,5,4,3.15,2.5,2;
in mm.
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| CN111790587B (en) * | 2020-08-04 | 2022-06-03 | 中铁九局集团工程检测试验有限公司 | Needle-shaped broken pebble screening device and method |
| CN112893168A (en) * | 2021-01-13 | 2021-06-04 | 山西浩博森新材料有限公司 | Dynamic image scanning-based gravel detection and classification device and detection method thereof |
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