CN109855709B - Automatic sample separating and weighing device and method for granular or powder samples - Google Patents
Automatic sample separating and weighing device and method for granular or powder samples Download PDFInfo
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- CN109855709B CN109855709B CN201910242070.0A CN201910242070A CN109855709B CN 109855709 B CN109855709 B CN 109855709B CN 201910242070 A CN201910242070 A CN 201910242070A CN 109855709 B CN109855709 B CN 109855709B
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- 238000005303 weighing Methods 0.000 title claims abstract description 72
- 239000000843 powder Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 137
- 239000002245 particle Substances 0.000 claims abstract description 26
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 238000005070 sampling Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Abstract
The invention relates to the technical field of sample detection and discloses an automatic sample separating and weighing device for particle or powder samples, which comprises a vibrating mechanism, a dumping mechanism and a sample weighing mechanism, wherein the dumping mechanism is connected to one side of the vibrating mechanism through a rotating shaft, the sample weighing mechanism is positioned on the other side of the vibrating mechanism, a source sample container is vertically fixed on the dumping mechanism, the rotating shaft is driven by a driving mechanism to rotate towards one side of the sample weighing mechanism, the dumping mechanism rotates to the position above the vibrating mechanism and is matched with the vibrating mechanism, so that the source sample container is in a horizontal state, a target sample container is vertically arranged on the sample weighing mechanism, and when the source sample container is in the horizontal state, the source sample container corresponds to a container opening of the target sample container. The invention also discloses a weighing method. The invention realizes automatic sample separation and weighing of particle or powder samples during detection, and avoids sample pollution and loss.
Description
Technical Field
The invention relates to the technical field of sample detection, in particular to an automatic sample dividing and weighing device and a weighing method for a particle or powder sample.
Background
In the food and chemical industry, the sample is accurately packaged when the particle or powder product is detected. The existing method is realized through a sample divider, solid particles or powdery substances are firstly put into the sample divider, then the solid particles or powdery substances are evenly divided into samples by the sample divider and are put into other containers, the sample divider can ensure the sample dividing precision, but samples need to be contacted with the sample divider in the sample dividing process, if the sample divider is used for dividing other samples, cross contamination can be generated, and at the moment, the sample divider needs to be cleaned and then the samples of the next sample are divided, so that the sample dividing efficiency is low.
Secondly, when laboratory tests test sample performance, because the original sample used for detection is often small in quantity, any pollution of the sample can influence the accuracy of a test result, and the sample can be lost in the transferring process by using the sample divider, and pollution can be generated in the transferring process, so that the existing sample divider is not applicable.
If the sample separation and weighing are performed manually, the workload is large, the efficiency is low, and the automatic sample separation and weighing device cannot be suitable for automatic test of batch samples.
Disclosure of Invention
The invention aims to solve the problems, and provides an automatic sample dividing and weighing device and an automatic sample dividing and weighing method for particle or powder samples, which can realize automatic sample dividing and weighing of the particle or powder samples during detection and avoid sample pollution and loss.
The technical scheme adopted by the invention is as follows:
the utility model provides an automatic branch appearance weighing device of granule or powder sample, its characterized in that includes vibrating mechanism, dumping mechanism and title appearance mechanism, dumping mechanism passes through the pivot and connects in one side of vibrating mechanism, title prototype mechanism is located the opposite side of vibrating mechanism vertically fixed source sample container on dumping mechanism, the pivot passes through actuating mechanism drive, to title prototype mechanism one side rotation, dumping mechanism rotates to vibrating mechanism top and vibrating mechanism cooperation make source sample container is the horizontality, vertically set up the target sample container on the title appearance mechanism, when source sample container is the horizontality, source sample container corresponds with the container mouth of target sample container, vibrating mechanism drives and dumping mechanism vibration, makes granule or powder sample in the source sample container fall into in the target sample container, title prototype mechanism monitors sample weight, makes granule or powder's weight that falls into in the target sample container be the predetermined value.
Further, the automatic sample separating and weighing device for the particle or powder samples further comprises a control unit, wherein the vibration mechanism, the driving mechanism and the sample weighing mechanism are connected to the control unit, and the control unit controls the vibration mechanism to be started and stopped according to the comparison between the preset weighing weight and the weighing value of the weighing mechanism.
Further, vibration mechanism includes bottom plate and roof, the roof sets up in the bottom plate top through two spring plates of both sides, fixed setting up the electro-magnet on the bottom plate, the fixed permanent magnet that sets up in roof below, the electro-magnet corresponds with the permanent magnet position, and when the electro-magnet charges, electro-magnet and permanent magnet adsorb, drive the roof and remove, make the spring plate of both sides produce deformation, when the electro-magnet loses power, the spring plate of both sides resets, makes the roof return to normal position.
Further, the two spring plates and the bottom plate incline to form an angle, and when the electromagnet is adsorbed by the permanent magnet, the moving direction of the top plate is the same as the inclination direction of the spring plates.
Further, the vibration mechanism is arranged on the base, a side plate is arranged on one side of the base, the driving mechanism is a motor, the motor is arranged on the side plate, and the motor is connected to the rotating shaft through a belt.
Further, the electromagnet is arranged on the bottom plate between the two spring plates, and the permanent magnet is arranged under the top plate between the two spring plates.
Further, dumping mechanism includes the clamping jaw that sets up on rotating block and the rotating block, clamping jaw centre gripping source sample container, set up the container layer board on the rotating block of clamping jaw below, the container layer board supports source sample container, set up the stopper on the base, the stopper is located dumping mechanism's rotating block below, prescribes a limit to the answer position of rotating block.
Further, the weighing mechanism comprises a balance and a container seat arranged on the balance, and the target sample container is arranged on the container seat.
Further, the automatic sample separating and weighing device for the particle or powder samples further comprises a workbench, the vibrating mechanism and the dumping mechanism are arranged on the workbench, the sample weighing mechanism is arranged below the workbench, and the target sample container is arranged above the workbench.
The method for weighing the particles or the powder by using the automatic sample separating and weighing device for the particles or the powder samples is characterized by comprising the following steps of: the method comprises the following steps:
(1) Starting and initializing a sample separating device, and presetting a sample separating weight value by a control unit;
(2) A source sample container with less than half container capacity is arranged on a clamping jaw of a pouring mechanism and is fixed by the clamping jaw;
(3) Fixing the target sample container on a container base of the weighing mechanism;
(4) The driving mechanism drives the dumping mechanism to dump towards one side of the weighing device, so that the source sample container is overturned to a horizontal position, and at the moment, the container opening of the source sample container is positioned above the container opening of the target sample container and is opposite to the container opening;
(5) The control unit controls the vibration mechanism to vibrate, and particles or powder samples in the source sample container fall into the target sample container under vibration;
(6) The weighing mechanism feeds back the weight value of the particles or powder falling into the target sample container to the control unit, and when the weight value reaches a preset value, the control unit controls the vibration mechanism to stop vibrating;
(7) And (5) taking off the source sample container and the target sample container, and finishing sample separation.
The beneficial effects of the invention are as follows:
(1) The automatic sample dividing and weighing device is automatically controlled by the control unit and is accurate in weighing;
(2) No other equipment or personnel contact the sample in the weighing process, so that pollution and sample loss are not formed;
(3) Simple structure and convenient operation.
Drawings
FIG. 1 is a schematic view of the structure of the pouring mechanism of the present invention when not inverted;
FIG. 2 is a schematic diagram of the tilting mechanism of the present invention in a flipped configuration;
FIG. 3 is a schematic perspective view of the components associated with the vibration mechanism and the dumping mechanism;
fig. 4 is a schematic structural view of the vibration mechanism.
The reference numerals in the drawings are respectively:
1. a vibration mechanism; secondly, a dumping mechanism;
3. weighing a sample mechanism; fourth, the spindle;
5. a balance; sixthly, a container seat;
7. a target sample container; a workbench;
9. a rotating block; a clamping jaw;
11. a source sample container; 12, a container pallet;
13. a base; 14, side plates;
15. a motor; a belt pulley;
17. a limiting block; 18, a support body;
19. a stud; a base plate;
21. a top plate; 22, a spring plate;
23. an electromagnet; 24, permanent magnets.
Detailed Description
The following describes in detail the embodiments of the automatic sample-dividing weighing apparatus and the weighing method for a granular or powder sample according to the present invention with reference to the accompanying drawings.
Referring to fig. 1 and 2, the automatic sample separating and weighing device for the granular or powder samples comprises a vibrating mechanism 1, a dumping mechanism 2 and a sampling mechanism 3, wherein the dumping mechanism 2 is connected to the left side of the vibrating mechanism 1 through a rotating shaft 4, and the sampling mechanism 3 is positioned on the right side of the vibrating mechanism 1. The positions of the weighing mechanism 3, the vibrating mechanism 1 and the dumping mechanism 2 can be changed, and the sample separating and weighing operation of the device is not affected.
The weighing mechanism 3 comprises a balance 5 and a container seat 6 arranged on the balance 5, wherein a target sample container 7 is arranged on the container seat 6 and used for placing a sample after sample separation, and the weighing mechanism 3 can be arranged below the workbench 8 after the vibrating mechanism 1 and the dumping mechanism 2 are lifted up through the workbench 8 because the balance 5 cannot be directly arranged on the side edge of the vibrating mechanism 1 due to the limitation of the height and the size of the balance 5. While the receptacle 6 protrudes from an opening in the table top of the table 8, and the target sample container 7 is set on the receptacle 6.
Referring to fig. 3, the dumping mechanism 2 includes a rotating block 9 and a clamping jaw 10 disposed on the rotating block 9, the clamping jaw 10 is used for clamping a source sample container 11, in an initial state, the source sample container 11 is vertically fixed on the clamping jaw 10, a container supporting plate 12 is disposed on the rotating block 9 below the clamping jaw 10, and the container supporting plate 12 supports the source sample container 11. The clamping jaw 10 is a pneumatic clamping jaw.
The vibration mechanism 1 is provided on a base 13, and the base 13 is mounted on the table 8. A side plate 14 is arranged on one side of the base 13, a motor 15 is arranged on the side plate 14, a belt pulley 16 is arranged on the output main shaft of the motor 15 and the rotating shaft 4 of the dumping mechanism 2, and the rotation of the motor 15 is transmitted to the rotating shaft 4 through a belt. A speed change mechanism can also be arranged between the motor 15 and the rotating shaft 4 to adjust different rotating speeds.
The base 13 is provided with a limiting block 17, and the limiting block 17 is positioned below the rotating block 9 of the dumping mechanism 2 and limits the restoring position of the rotating block 9. The limiting block 17 comprises a supporting body 18 arranged on the base 13 and a stud 19 arranged on the supporting body 18, the top end of the stud 19 is used for limiting the dumping mechanism 2, and the restoring position of the dumping mechanism 2 is adjusted by adjusting the height of the stud 19.
The rotating block 9 of the dumping mechanism 2 is arranged on the rotating shaft 4 at the left side of the vibrating mechanism 1, the rotating shaft 4 is driven by the driving mechanism motor 15 to rotate, the dumping mechanism 2 is overturned rightwards and is overturned to be matched with the upper surface of the vibrating mechanism 1, and the dumping mechanism 2 and the upper surface of the vibrating mechanism 1 form a whole so as to prevent deviation during vibration. At this time, the source sample container 11 on the pouring mechanism 2 is poured rightward to the horizontal state or the nearly horizontal state. The pouring angle of the source sample container 11 can be slightly adjusted according to different particle and powder samples to prevent scattering of the samples, for example, the angle of the clamping jaw 10 is adjusted to enable the source sample container 11 to have a small angle with the vibrating mechanism 1 after being poured, so that the container mouth is slightly tilted upwards.
Referring to fig. 4, the vibration mechanism 1 adopts an electromagnetic vibration principle, the vibration mechanism 1 comprises a bottom plate 20 and a top plate 21, the top plate 21 is arranged above the bottom plate 20 through two spring plates 22 on two sides, an electromagnet 23 is fixedly arranged on the bottom plate 20, a permanent magnet 24 is fixedly arranged below the top plate 21, the electromagnet 23 corresponds to the permanent magnet 24 in position, when the electromagnet 23 is charged, the electromagnet 23 is adsorbed by the permanent magnet 24 to drive the top plate 21 to move, the spring plates 22 on two sides deform, and when the electromagnet 23 is de-energized or the power source is reversed, the spring plates 22 on two sides reset, so that the top plate 21 returns to the original position, and periodic vibration is generated. The top plate 21 is kept in a horizontal state all the time while vibrating due to the elastic action of the two spring plates 22.
The electromagnet 23 and the permanent magnet 24 are disposed in the space formed by the top plate 21, the bottom plate 20 and the two spring plates 22, or may be disposed outside the space and on the left or right side. The two spring plates 22 are inclined at an angle to the bottom plate 20, and when the electromagnet 23 is attracted by the permanent magnet 24, the direction of movement of the top plate 21 is the same as the inclination direction of the spring plates 22. The inclined arrangement of the spring plate 22 advantageously allows the spring plate 22 to vibrate elastically with less suction between the electromagnet 23 and the permanent magnet 24.
The sample separating and weighing device is controlled by a control unit, the control unit can be a single chip microcomputer, an industrial control computer or a PLC (programmable logic controller) and the like, and the vibrating mechanism 1, the driving motor and the sample weighing mechanism 3 are all connected to the control unit, and the control unit is interacted with a user, and is used for presetting weighing values, controlling the motor, controlling an electromagnet and the like.
Referring again to fig. 1 and 2, the operation of the present invention will now be described in detail by way of a sample weighing process for granular grain seeds.
Both the source sample container 11 and the target sample container 7 are loaded with seed samples by test tubes, and after the system is started and initialized, the weight values of the seed samples to be sampled are preset by the control unit.
A source sample container 11 having less than half the tube capacity is placed on the jaw 10 of the pouring mechanism 2 and held in place by the jaw 10. The source sample container 11 is in an upright state. The target sample container 7 is then fixed to the receptacle 6 of the weighing mechanism, ensuring the initial position of the target sample container 7.
The control unit controls the motor 15 to rotate, so that the dumping mechanism 2 is dumped to the right, namely, one side of the weighing device, and the source sample container 11 is overturned to the horizontal position, at the moment, the container opening of the source sample container 11 is positioned above the container opening of the target sample container 7, and the two container openings are opposite.
The control unit controls the vibration mechanism 1 to vibrate, different vibration frequencies are set according to the size of the seed particles, the dumping mechanism 2 vibrates under the belt transportation of the vibration mechanism 1, and the seed particles in the source sample container 11 fall into the target sample container 7 under the vibration. At this time, the balance 5 of the weighing mechanism 3 feeds back the weight of the seed sample falling into the target sample container 7 to the control unit in real time, and when the weight value reaches a preset value, the control unit controls the vibration mechanism 1 to stop vibrating, so that the one-time sample separation is completed.
The control unit controls the motor 15 to reversely rotate, so that the dumping mechanism 2 returns to the initial position, the source sample container 11 returns to the vertical position, the source sample container 11 and the target sample container 7 are taken down, the subsequent process is carried out, and the sample separation is finished.
And (5) repeating the above operation when sample separation and weighing are carried out again. The seed sample does not contact any other equipment in the operation process, and no pollution is generated.
In addition to seed samples, granular samples such as medicines, mineral particles, etc., and powdery samples such as chemical powder, food powder, etc., can be subjected to sample separation by the sample separation weighing device of the present invention.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (7)
1. An automatic sample separating and weighing device for a particle or powder sample is characterized in that: the sample weighing machine comprises a vibrating mechanism, a dumping mechanism and a sample weighing mechanism, wherein the dumping mechanism is connected to one side of the vibrating mechanism through a rotating shaft, the sample weighing mechanism is located on the other side of the vibrating mechanism, a source sample container is vertically fixed on the dumping mechanism, the rotating shaft is driven by a driving mechanism to rotate to one side of the sample weighing mechanism, the dumping mechanism rotates to the position above the vibrating mechanism and is matched with the vibrating mechanism, so that the source sample container is in a horizontal state, a target sample container is vertically arranged on the sample weighing mechanism, when the source sample container is in the horizontal state, the source sample container corresponds to a container opening of the target sample container, the vibrating mechanism drives the dumping mechanism to vibrate, so that particles or powder samples in the source sample container fall into the target sample container, the sample weighing mechanism monitors the weight of the samples, the weight of the particles or the powder falling into the target sample container is a preset value, the dumping mechanism comprises a rotating block and a clamping jaw arranged on the rotating block, a supporting plate arranged on the rotating block below the clamping jaw is used for supporting the source sample container.
2. An automated sample-dividing weighing apparatus for particulate or powder samples as claimed in claim 1 wherein: the automatic sample separating and weighing device for the particle or powder samples further comprises a control unit, wherein the vibration mechanism, the driving mechanism and the sample weighing mechanism are connected to the control unit, and the control unit controls the vibration mechanism to be started and stopped according to comparison between preset weighing weight and a weighing value of the weighing mechanism.
3. An automated sample-dividing weighing apparatus for particulate or powder samples as claimed in claim 1 wherein: the vibration mechanism comprises a bottom plate and a top plate, wherein the top plate is arranged above the bottom plate through two spring plates on two sides, an electromagnet is fixedly arranged on the bottom plate, a permanent magnet is fixedly arranged below the top plate, the electromagnet corresponds to the position of the permanent magnet, when the electromagnet is charged, the electromagnet is adsorbed with the permanent magnet, the top plate is driven to move, the spring plates on two sides are deformed, and when the electromagnet is powered off, the spring plates on two sides are reset, so that the top plate returns to the original position.
4. An automated sample-dividing weighing apparatus for particulate or powder samples as claimed in claim 3 wherein: the two spring plates and the bottom plate incline to form an angle, and when the electromagnet is adsorbed by the permanent magnet, the moving direction of the top plate is the same as the inclination direction of the spring plates.
5. An automated sample-dividing weighing apparatus for particulate or powder samples as claimed in claim 3 wherein: the vibration mechanism is arranged on the base, a side plate is arranged on one side of the base, the driving mechanism is a motor, the motor is arranged on the side plate, and the motor is connected to the rotating shaft through a belt.
6. An automated sample-dividing weighing apparatus for particulate or powder samples as claimed in claim 3 wherein: the electromagnet is arranged on the bottom plate between the two spring plates, and the permanent magnet is arranged below the top plate between the two spring plates.
7. A method of weighing particles or powder by an automatic sample-dividing weighing apparatus for a sample of particles or powder according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
(1) Starting and initializing a sample separating device, and presetting a sample separating weight value by a control unit;
(2) A source sample container with less than half container capacity is arranged on a clamping jaw of a pouring mechanism and is fixed by the clamping jaw;
(3) Fixing the target sample container on a container base of the weighing mechanism;
(4) The driving mechanism drives the dumping mechanism to dump towards one side of the weighing device, so that the source sample container is overturned to a horizontal position, and at the moment, the container opening of the source sample container is positioned above the container opening of the target sample container and is opposite to the container opening;
(5) The control unit controls the vibration mechanism to vibrate, and particles or powder samples in the source sample container fall into the target sample container under vibration;
(6) The weighing mechanism feeds back the weight value of the particles or powder falling into the target sample container to the control unit, and when the weight value reaches a preset value, the control unit controls the vibration mechanism to stop vibrating;
(7) And (5) taking off the source sample container and the target sample container, and finishing sample separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242070.0A CN109855709B (en) | 2019-03-28 | 2019-03-28 | Automatic sample separating and weighing device and method for granular or powder samples |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242070.0A CN109855709B (en) | 2019-03-28 | 2019-03-28 | Automatic sample separating and weighing device and method for granular or powder samples |
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| CN109855709A CN109855709A (en) | 2019-06-07 |
| CN109855709B true CN109855709B (en) | 2024-02-06 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207984B (en) * | 2020-04-21 | 2021-01-26 | 北京矿冶科技集团有限公司 | Quantitative division device and method |
| CN114427993A (en) * | 2020-09-16 | 2022-05-03 | 中国石油化工股份有限公司 | Liquid transfer system, solution determining instrument and liquid transfer solution determining method |
| CN113865679B (en) * | 2021-09-22 | 2023-12-05 | 上海汇像信息技术有限公司 | Weighing measurement method of powder weighing system |
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| US6986279B2 (en) * | 2000-08-22 | 2006-01-17 | Barnstead Thermolyne Corporation | Method and apparatus for determining liquid absorption of aggregate |
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| US5273584A (en) * | 1991-04-15 | 1993-12-28 | Plasma-Technik Ag | Device for the dosed conveying of powder to a powder processing unit |
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