CN111111827A - Preparation device and method of uniform sample - Google Patents
Preparation device and method of uniform sample Download PDFInfo
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- CN111111827A CN111111827A CN201911399542.XA CN201911399542A CN111111827A CN 111111827 A CN111111827 A CN 111111827A CN 201911399542 A CN201911399542 A CN 201911399542A CN 111111827 A CN111111827 A CN 111111827A
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- sample
- stepping motor
- screen cloth
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/14—Stamping mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
Abstract
The invention relates to a device and a method for preparing a uniform sample, wherein the output end of a first stepping motor in the device is connected with a first screw rod, a first slide block is arranged on the first screw rod through an internal thread hole, and the first slide block is arranged in an upright post in a sliding manner through a groove; one side of the first sliding block is fixedly connected with an impact head through a first connecting rod, a box body is arranged below the impact head, the impact end of the impact head extends into the box body through an opening, a sample table is arranged at the bottom of the box body and is positioned right below the impact end of the impact head, a first layer of screen is arranged around the sample table, a second layer of screen with a small aperture is connected below the first layer of screen, and a third layer of screen with a small aperture is connected below the second layer of screen; according to the method, the second layer of screen and the third layer of screen with corresponding meshes are calculated and then installed, the sample is placed on the sample table, the first stepping motor is started, samples with different sizes are separated, the first stepping motor is turned off after the weight of the sample required by the test is finished, and the uniformity of the sample is guaranteed.
Description
Technical Field
The invention belongs to the technical field of sample preparation, and relates to a device and a method for preparing a uniform sample.
Background
In the production process of the electronic glass, the process temperature in each procedure is set by taking the corresponding temperature of the electronic glass with certain viscosity as a reference, and comprises a melting temperature, a stirring temperature, a clarifying temperature, a forming temperature and the like. Therefore, during the development of electronic glass, the testing of the corresponding viscosity at different temperatures is essential.
At present, the relation between the viscosity and the temperature of the electronic glass is measured by adopting a rotation method in the industry, namely, the glass melt is filled between a coaxial rotating body and a crucible, the rotating body and the crucible are provided with different angular velocities, the rotating body and the crucible generate torque due to viscous resistance of the glass melt, and the torque is measured by a torque measuring device, so that the viscosity of the glass melt can be obtained. Different temperatures correspond to different viscosities, a relation curve of the viscosities and the temperatures is drawn according to a plurality of tested points, and then a fitting formula of the relation between the viscosities and the temperatures is solved, so that a temperature value can be solved through the viscosities, and a viscosity value can also be solved through the temperatures. It can be seen that the rotation method is a test performed in a state where the glass is molten, and belongs to a high temperature test.
When a new glass material prescription is researched in a laboratory, an obtained glass sample is a whole piece of glass with the size of about 120 multiplied by 60 multiplied by 10mm, and the glass sample needs to be made into small fragments before a high-temperature test is carried out, the sample is wrapped by a clean material and knocked into fragments by an iron hammer in the current sample preparation method, a 10-mesh screen underflow and a 30-mesh screen overflow are taken for a crystallization test, and the rest blocks are used for a viscosity test.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the preparation device and the preparation method of the uniform sample, which have the advantages of simple structure, convenience and safety in operation and guarantee of the uniformity of the sample.
The invention is realized by the following technical scheme:
a preparation device for uniform samples comprises an impact head, a box body, a first stepping motor, a first screw, a first sliding block, a first connecting rod, a first supporting platform and an upright post;
the first support table is provided with an upright post and a first stepping motor, the output end of the first stepping motor is connected with a first screw rod, the first screw rod is parallel to the upright post, a first internal thread hole is formed in the first sliding block, the first sliding block is arranged on the first screw rod through the first internal thread hole, a groove is formed in one side, close to the first sliding block, of the upright post, and the first sliding block is arranged in the upright post in a sliding mode through the groove;
the utility model discloses a sample platform, including the stand, the stand is provided with the box, the box is provided with the opening, the impact end of impacting the head is gone deep into inside the box through the opening, the bottom half is located and is impacted the end and be the sample platform under, the sample platform is used for holding the sample, be the first layer screen cloth around the sample platform, the below of first layer screen cloth is connected with second floor screen cloth, second floor screen cloth is less than the aperture of first layer screen cloth, the below of second floor screen cloth is connected with the third layer screen cloth, the.
Preferably, the device also comprises a second connecting rod, a second sliding block, a second screw rod, a second stepping motor and a second supporting platform;
one side of the box opposite to the first supporting table is provided with a second supporting table, a second stepping motor is arranged on the second supporting table, the output end of the second stepping motor is arranged towards the box, the output end of the second stepping motor is connected with a second screw rod, a second internal thread hole is formed in a second sliding block, the second sliding block is arranged on the second screw rod through the second internal thread hole, and the second sliding block is fixedly connected with the box through a second connecting rod.
Preferably, the upper end of the box body is provided with a protective cover, and the protective cover is provided with an opening.
Further, a handle is arranged on the protective cover.
Preferably, the first layer of screen cloth is symmetrically and horizontally arranged along the center of the bottom of the box body and then vertically bent upwards to form a first limit groove with the box body; the second layer of screen mesh is symmetrically arranged along the center position of the second layer of screen mesh in a horizontally outward extending mode, then is vertically bent upwards and horizontally extended inwards, and finally is vertically bent downwards to form a first blocking wall, and the first blocking wall is buckled in the first limiting groove;
the second layer of screen mesh extends horizontally outwards along the first barrier wall and then is bent vertically upwards, and a second limiting groove is formed between the second layer of screen mesh and the vertical edge of the first barrier wall; the third layer of screen mesh extends outwards along the central position of the third layer of screen mesh symmetrically and horizontally, then bends upwards vertically and then extends inwards horizontally, finally bends downwards and vertically to form a second blocking wall, and the second blocking wall is buckled in a second limiting groove.
Preferably, the first layer of screen cloth, the second layer of screen cloth and the third layer of screen cloth are all made of stainless steel.
Preferably, the first layer of screen cloth, the second layer of screen cloth and the third layer of screen cloth all be circular, the diameter that the second layer of screen cloth is greater than the first layer of screen cloth 10 ~ 20mm, the diameter that the third layer of screen cloth is greater than the second layer of screen cloth 10 ~ 20 mm.
A method for preparing a homogeneous sample, based on the apparatus for preparing a homogeneous sample according to any one of the above, comprising the steps of,
step 1, calculating the mesh number of a second layer of screen, a third layer of screen and a third layer of screen according to the required sample particle size, and then selecting the second layer of screen and the third layer of screen with corresponding mesh number;
step 3, placing the sample on a sample table at the bottom of the box body, starting a first stepping motor, driving an impact head to move by the first stepping motor through a first sliding block, and further crushing and sieving the sample to separate out samples with different sizes;
and 4, after the set time is reached in the step 3, taking down the third layer of screen and the second layer of screen, respectively weighing the sample weight, closing the first stepping motor when the sample weight meets the test requirement, installing the second layer of screen and the third layer of screen again when the sample weight does not meet the test requirement, continuously crushing and sieving the sample by the first stepping motor until the sample weight meets the test requirement, and closing the first stepping motor to finish the preparation of the uniform sample.
Further, in the step 3, when the first stepping motor is started, a second stepping motor is started, and the second stepping motor drives the box body to move left and right through a second sliding block;
and 4, closing the first stepping motor and the second stepping motor when the weight of the sample meets the test requirement, and after the second layer of screen and the third layer of screen are installed again when the weight of the sample does not meet the test requirement, continuing to crush the sample and sieving the sample by the first stepping motor and the second stepping motor until the weight of the sample meets the test requirement, and closing the first stepping motor and the second stepping motor.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the preparation device for the uniform sample, the upright post and the first stepping motor are arranged on the first support platform, the output end of the first stepping motor can be connected with the first screw rod, and the first sliding block is arranged on the first screw rod, so that the upright post and the first stepping motor can be stabilized by the first support platform, and the first stepping motor drives the first screw rod to rotate left and right so that the first sliding block can slide up and down in the upright post; the impact end of the impact head penetrates into the box body through the opening, the first layer of screen is arranged on the periphery of the sample platform, the second layer of screen is connected below the first layer of screen, the aperture of the second layer of screen is smaller than that of the first layer of screen, the third layer of screen is connected below the second layer of screen, and the aperture of the third layer of screen is smaller than that of the second layer of screen; the device can obtain uniform samples in the required particle size range, and is convenient and fast for experimental research of scientific research institutions and other research units.
Furthermore, the box body drives the second layer of screen and the third layer of screen to move left and right through the second stepping motor, so that samples with different particle sizes can be separated more quickly, and the efficiency of preparing uniform samples is improved.
Furthermore, the upper end of the box body is provided with a protective cover, so that the danger of injury caused by glass sputtering which possibly occurs in manual sample preparation is avoided.
The invention relates to a preparation method of a uniform sample, which comprises the steps of firstly calculating the required mesh number of a screen according to the required particle size of the sample, then installing a second layer of screen and a third layer of screen, adjusting the height and frequency of a sample impact head impacting the sample through a first stepping motor after the sample is placed so as to separate sample particles with uniform sizes, stopping the work of the first stepping motor according to whether the weight of the sample meets the test requirement, and particularly avoiding test errors caused by non-uniformity of a melted glass sample in the high-temperature test process; the second layer of screen cloth and the sample that the third layer of screen cloth homogeneity is good can be separated, have improved work efficiency.
Furthermore, the movement frequency and the displacement of the second layer of screen and the third layer of screen are adjusted through the second stepping motor, so that samples with different particle sizes can be separated more quickly, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of a device for preparing a homogeneous sample according to the present invention.
Fig. 2 is a schematic view illustrating the connection between the first sliding block and the vertical column in fig. 1.
Fig. 3 is a top view of the first screen of fig. 1.
Fig. 4 is a top view of the second screen of fig. 1.
In the figure: 1-impact head; 2-a box body; 3-a sample; 4-a first layer of screen mesh; 5-a second layer of screen mesh; 6-a third layer of screen mesh; 7-a first stepper motor; 8-a first screw; 9-a first slider; 10-a first link; 11-a protective cover; 12-a bolt; 13-a first limit groove; 14-a first barrier wall; 15-a handle; 16-a sample stage; 17-a first support table; 18-a second restraint slot; 19-a second barrier wall; 20-a second link; 21-a second slide; 22-a second screw; 23-a second stepper motor; 24-a second support table; 25-upright post; 26-groove.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The invention relates to a preparation device of a uniform sample, which comprises an impact head 1, a box body 2, a first stepping motor 7, a first screw 8, a first slide block 9, a first connecting rod 10, a first supporting platform 17 and a stand column 25, wherein the bottom of the box body 2 comprises a first layer of screen 4 and a sample platform 16, the first layer of screen 4 and the box body 2 are integrated, the middle of the first layer of screen 4 is of a solid structure, and the middle part of the first layer of screen 4 is of a complete circle, in particular to the sample platform 16;
the first supporting platform 17 is provided with an upright post 25 and a first stepping motor 7, the output end of the first stepping motor 7 is connected with a first screw 8, the first screw 8 is parallel to the upright post 25, a first internal threaded hole is formed in the first sliding block 9, the first sliding block 9 is arranged on the first screw 8 through the first internal threaded hole, a groove 26 is formed in one side, close to the first sliding block 9, of the upright post 25, the first sliding block 9 is arranged in the upright post 25 in a sliding mode through the groove 26, and the first sliding block is connected with the upright post as shown in fig. 2;
the side, opposite to the upright post 25, of the first sliding block 9 is fixedly connected with an impact head 1 through a first connecting rod 10, a box body 2 is arranged below the impact head 1, an opening is formed in the box body 2, the impact end of the impact head 1 extends into the box body 2 through the opening, a sample table 16 is arranged at the bottom of the box body 2 and is located right below the impact end of the impact head 1, the sample table 16 is used for containing a sample 3, a first layer of screen 4 is arranged on the periphery of the sample table 16, a second layer of screen 5 is connected below the first layer of screen 4, the second layer of screen 5 is smaller than the first layer of screen 4 in diameter, a third layer of screen 6 is connected below the second layer of screen 5, the third layer of screen 6 is smaller than the second layer of screen 5, the third layer of screen 6 is placed on a workbench, and the top views of the second layer of screen 5 and the third layer of screen 6 are.
One side that box 2 is relative with first supporting bench 17 is provided with second brace table 24, is provided with second step motor 23 on the second brace table 24, and the output of second step motor 23 sets up towards box 2, and the output of second step motor 23 is connected with second screw rod 22, is provided with second internal thread hole in the second slider 21, and second slider 21 passes through second internal thread hole and sets up on second screw rod 22, through second connecting rod 20 fixed connection between second slider 21 and the box 2.
The upper end of box 2 is equipped with visor 11, and the central point of visor 11 puts and is provided with the opening, drives first screw rod 8 through first step motor 7 and rotates to drive first slider 9 and reciprocate, first slider 9 drives impact head 1 and reciprocates and impact sample 3.
The protective cover 11 is fixed on the box body 2 through a bolt 12, a handle 15 is arranged on the protective cover 11 for operation, and the protective cover is arranged to prevent the glass sample from being injured due to sputtering of broken glass in the process of impacting the glass sample.
The first layer of screen 4 symmetrically extends horizontally along the center of the bottom of the box body 2 and then is bent vertically upwards to form a first limit groove 13 with the box body 2; the second layer of screen cloth 5 extends outwards along its central position symmetry level, later upwards buckles perpendicularly and then extends inwards horizontally, buckles perpendicularly downwards at last and forms first barrier wall 14, and first barrier wall 14 buckle is in first spacing groove 13, and first barrier wall 14 can block with first spacing groove 13 chucking, can not drop at the vibration in-process.
The first layer of screen 4, the second layer of screen 5 and the third layer of screen 6 are all made of stainless steel, the second layer of screen 5 is horizontally extended outwards along the first barrier wall 14 and then is vertically bent upwards, and a second limiting groove 18 is formed by the second layer of screen 5 and the vertical edge of the first barrier wall 14; the third layer of screen 6 extends outwards along the central position of the third layer symmetrically and horizontally, then bends upwards vertically and then extends inwards horizontally, finally bends downwards vertically to form a second blocking wall 19, the second blocking wall 19 is buckled in a second limiting groove 18, and the second blocking wall 19 can be tightly clamped with the second limiting groove 18 and cannot fall off in the vibration process.
The first layer of screen 4, the second layer of screen 5 and the third layer of screen 6 are all round, the second layer of screen 5 is 10-20 mm larger than the whole diameter of the first layer of screen 4, and the second layer of screen 5 is smaller than the aperture of the first layer of screen 4; the third layer of screen cloth 6 is 10 ~ 20mm bigger than the whole diameter of second layer of screen cloth 5, and third layer of screen cloth 6 is less than the aperture of second layer of screen cloth 4.
The second connecting rod 20 is welded with the second sliding block 21, and the second screw rod 22 is driven to rotate through the second stepping motor 23, so that the second sliding block 21 is driven to slide left and right, the second sliding block 21 drives the box body and each layer of screen to move left and right, samples with different particle sizes are separated through step-by-step screen vibration, and the uniformity of various test samples is guaranteed.
The box body 2 can be connected with 3-5 layers of screen meshes layer by layer according to the scheme, so that samples with different particle sizes can be conveniently separated, uniform samples can be provided for different tests, labor is saved, and working efficiency is improved.
According to the preparation method of the uniform sample, the particle size of the required sample can be determined by the existing formula:
mesh inner diameter μm ≈ 14832.4/mesh number (1)
Calculating the required mesh number of the screen;
the method comprises the following steps:
the first step is as follows: calculating the mesh number required by the second layer of screen 5 and the third layer of screen 6 according to the required sample particle size by using a formula (1), and then selecting the second layer of screen 5 and the third layer of screen 6 with corresponding mesh number;
the second step is that: clamping the second layer of screen cloth 5 onto a first limiting groove 13 of the first layer of screen cloth 4 through a first barrier wall 14, and clamping the third layer of screen cloth 6 onto a second limiting groove 18 of the second layer of screen cloth 5 through a second barrier wall 19;
the third step: opening the protective cover 11, placing the annealed glass sample 3 on a sample table 16 in the box body 2, and fixing the protective cover 11 and the box body 2 through bolts 12 to prevent broken glass from splashing in the sample preparation process;
the fourth step: adjusting a first stepping motor 7 to enable an impact head 1 to move up and down to impact a sample, adjusting a second stepping motor to enable a box body 2 to drive a first layer of screen 4, a second layer of screen 5 and a third layer of screen 6 to move left and right, and enabling fragments with different sizes to be separated through the screens;
the fifth step: fourthly, after 10-20 min, taking down the third layer of screen 6 and the second layer of screen 5, respectively weighing the sample weight, and stopping the procedure when the test requirement is met; and if the weight of the sample does not meet the test requirement, continuing the second step and the fourth step until the weight of the sample meets the test requirement.
And ultrasonically cleaning a sample with the weight meeting the test requirement by absolute ethyl alcohol for one time to remove organic impurities, removing oily impurities, ultrasonically cleaning the sample by purified water for 2 times to remove water-soluble substances and other floating substances, drying the sample in an oven, and then testing.
The device for preparing the uniform sample as shown in FIG. 1 needs to prepare 60g of glass particles with the diameter of 0.5-1.5 mm for crystallization test and 200g of glass fragments with the diameter of 1.5-3 mm for viscosity test, and comprises the following preparation steps:
the first step is as follows: according to the formula:
mu m of screen inner diameter (particle diameter) approximately equal to 14832.4/mesh number
Calculating glass particles of 0.5-1.5 mm to obtain undersize products of a 10-mesh screen and oversize products of a 30-mesh screen;
the 1.5-3 mm glass fragments are undersize of a 5-mesh screen and oversize of a 10-mesh screen. Therefore, the first layer of screen is 5 meshes, the second layer of screen is 10 meshes, and the third layer of screen is 30 meshes;
the second step is that: clamping a 10-mesh second-layer screen with the diameter of 280mm onto a first limiting groove of a circular 5-mesh first-layer screen with the outer diameter of 260mm and the inner diameter of 180mm through a first blocking wall, and clamping a 30-mesh third-layer screen with the diameter of 300mm onto the first limiting groove of the second-layer screen through a second blocking wall clamping groove;
the third step: the handle 15 is held by hand, the protective cover 11 is opened, the annealed glass sample is placed on a sample table 16 with the diameter of 180mm at the bottom of the box body, the protective cover 11 and the box body 2 are fixed through the bolt 12, and glass cullet is prevented from splashing in the sample preparation process;
the fourth step: adjusting a first stepping motor to enable an impact head to move up and down at a speed of 50 times/min to impact a sample, setting the moving distance to be 100mm, and meanwhile, setting a box body 2 to drive the first layer of screen, the second layer of screen and the third layer of screen to move at a frequency of 60 times/min and a displacement of 50mm, so that glass samples are crushed and sieved at the same time, and samples with different sizes are separated;
the fifth step: and fourthly, after 15min, taking down the third layer of screen and the second layer of screen, respectively weighing the sample weight, wherein the two sample weights both meet the test requirement, and stopping the procedure.
And ultrasonically cleaning a sample with the weight meeting the test requirement by absolute ethyl alcohol for one time, then ultrasonically cleaning the sample by purified water for 2 times, then placing the sample in an oven for drying, and respectively testing after drying.
The foregoing is directed to embodiments of the present invention and, in light of the foregoing description, various modifications and substitutions may be made by those skilled in the art without departing from the spirit of the invention and these modifications and substitutions are within the scope of the detailed description of the invention.
Claims (9)
1. The preparation device of the uniform sample is characterized by comprising an impact head (1), a box body (2), a first stepping motor (7), a first screw (8), a first sliding block (9), a first connecting rod (10), a first supporting platform (17) and an upright post (25);
an upright post (25) and a first stepping motor (7) are arranged on the first supporting table (17), the output end of the first stepping motor (7) is connected with a first screw rod (8), the first screw rod (8) is parallel to the upright post (25), a first internal threaded hole is formed in the first sliding block (9), the first sliding block (9) is arranged on the first screw rod (8) through the first internal threaded hole, a groove (26) is formed in one side, close to the first sliding block (9), of the upright post (25), and the first sliding block (9) is arranged in the upright post (25) through the groove (26) in a sliding mode;
the utility model discloses a sample platform, including first slider (9), stand (25), box (2), sample platform (16) is used for holding sample (3), be first layer screen cloth (4) around sample platform (16), the below of first layer screen cloth (4) is connected with second layer screen cloth (5), second layer screen cloth (5) are less than the aperture of first layer screen cloth (4), the below of second layer screen cloth (5) is connected with third layer screen cloth (6), third layer screen cloth (6) are less than the aperture of second layer screen cloth (5), third layer screen cloth (6) are placed on the workstation.
2. The apparatus for preparing a uniform sample according to claim 1, further comprising a second link (20), a second slider (21), a second screw (22), a second stepping motor (23), and a second support (24);
one side that box (2) and first supporting bench (17) are relative is provided with second brace table (24), be provided with second step motor (23) on second brace table (24), the output of second step motor (23) sets up towards box (2), the output of second step motor (23) is connected with second screw rod (22), be provided with second internal thread hole in second slider (21), second slider (21) pass through second internal thread hole and set up on second screw rod (22), pass through second connecting rod (20) fixed connection between second slider (21) and box (2).
3. A device for preparing homogeneous samples according to claim 1, wherein the upper end of the casing (2) is provided with a protective cover (11), and the protective cover (11) is provided with an opening.
4. A device for the preparation of homogeneous samples according to claim 3, wherein said protective cover (11) is provided with a handle (15).
5. The device for preparing the uniform sample according to claim 1, wherein the first layer of screen mesh (4) is symmetrically and horizontally arranged along the central position of the bottom of the box body (2) and then is bent upwards vertically to form a first limit groove (13) with the box body (2); the second layer of screen (5) symmetrically extends outwards horizontally along the center position, then bends upwards vertically and then extends inwards horizontally, finally bends downwards vertically to form a first blocking wall (14), and the first blocking wall (14) is buckled in the first limiting groove (13);
the second layer of screen (5) extends horizontally outwards along the first barrier wall (14) and then is bent vertically upwards, and a second limiting groove (18) is formed between the second layer of screen and the vertical edge of the first barrier wall (14); the third layer of screen (6) symmetrically extends outwards horizontally along the center position, then bends upwards vertically and extends inwards horizontally, finally bends downwards vertically to form a second blocking wall (19), and the second blocking wall (19) is buckled in a second limiting groove (18).
6. The device for preparing the uniform sample according to claim 1, wherein the first layer of screen cloth (4), the second layer of screen cloth (5) and the third layer of screen cloth (6) are all made of stainless steel.
7. The device for preparing a uniform sample according to claim 1, wherein the first layer of screen (4), the second layer of screen (5) and the third layer of screen (6) are circular, the second layer of screen (5) is 10-20 mm larger than the first layer of screen (4), and the third layer of screen (6) is 10-20 mm larger than the second layer of screen (5).
8. A method for preparing a homogeneous sample, comprising the steps of, in the apparatus for preparing a homogeneous sample according to any one of claims 1 to 7,
step 1, calculating the mesh number of a second layer of screen (5) and a third layer of screen (6) according to the required sample particle size, and then selecting the second layer of screen (5) and the third layer of screen (6) with corresponding mesh numbers;
step 2, connecting the second layer of screen (5) obtained in the step 1 below the first layer of screen (4), connecting the third layer of screen (6) obtained in the step 1 below the second layer of screen (5), and placing the third layer of screen (6) on a workbench;
step 3, placing the sample on a sample table (16) at the bottom of the box body (2), then starting a first stepping motor (7), wherein the first stepping motor (7) drives the impact head (1) to move through a first sliding block (9), so that the sample is crushed and sieved, and samples with different sizes are separated;
and 4, after the set time is reached in the step 3, taking down the third layer of screen (6) and the second layer of screen (5), respectively weighing the sample weight, closing the first stepping motor (7) when the sample weight meets the test requirement, installing the second layer of screen (5) and the third layer of screen (6) again when the sample weight does not meet the test requirement, continuously crushing and sieving the sample by the first stepping motor (7) until the sample weight meets the test requirement, and closing the first stepping motor (7) to finish the preparation of the uniform sample.
9. The method for preparing a uniform sample according to claim 8, wherein in step 3, the first stepping motor (7) is started, and simultaneously, the second stepping motor (23) is started, and the second stepping motor (23) drives the box body (2) to move left and right through the second slide block (21);
and in the step 4, when the weight of the sample meets the test requirement, closing the first stepping motor (7) and the second stepping motor (23), when the weight of the sample does not meet the test requirement, installing the second layer of screen (5) and the third layer of screen (6) again, continuing to crush the sample and sieving the sample by the first stepping motor (7) and the second stepping motor (23), and closing the first stepping motor (7) and the second stepping motor (23) until the weight of the sample meets the test requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911399542.XA CN111111827B (en) | 2019-12-30 | 2019-12-30 | Device and method for preparing uniform sample |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116689069A (en) * | 2023-06-21 | 2023-09-05 | 江苏超芯星半导体有限公司 | Metal pollution-free silicon carbide synthetic material block crushing device |
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