CN108760434B - Full-automatic dividing machine - Google Patents
Full-automatic dividing machine Download PDFInfo
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- CN108760434B CN108760434B CN201810762980.7A CN201810762980A CN108760434B CN 108760434 B CN108760434 B CN 108760434B CN 201810762980 A CN201810762980 A CN 201810762980A CN 108760434 B CN108760434 B CN 108760434B
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- 239000000463 material Substances 0.000 claims abstract description 43
- 238000003860 storage Methods 0.000 claims abstract description 35
- 238000005303 weighing Methods 0.000 claims abstract description 33
- 238000005070 sampling Methods 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 230000003442 weekly effect Effects 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 8
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a full-automatic dividing machine, and belongs to the technical field of test sample preparation equipment. The machine comprises a feed inlet supported at the uppermost part of a base, wherein the bottom of the feed inlet is positioned on a weighing hopper with a weighing sensor, and the bottom of the weighing hopper is a discharge channel capable of being opened and closed; the lower part of the discharging channel is provided with a vibrating material box high end with a chute, the lower end of the vibrating material box is provided with a rotatable blanking pipe driven by a dividing motor, the outlet of the blanking pipe faces to the upper part of the conical side wall of the dividing funnel, the bottom of the dividing funnel is provided with a sample storage outlet, and the conical side wall is provided with a sample outlet with a preset sampling dividing angle. The invention realizes the full-automatic operation stability of the whole operation processes of weighing a batch of materials, storing and discarding samples, vibrating feeding, dividing and sampling, storing the residual materials and the like, is accurate and precise in mass division, greatly reduces the labor intensity and improves the production efficiency.
Description
Technical Field
The invention relates to preparation of medium-strength material samples applied to industries such as metallurgy, coal, port business inspection and the like, in particular to a full-automatic dividing machine, and belongs to the technical field of test sample preparation equipment.
Background
"reduction" generally refers to the process of reducing mass without changing particle size to achieve the quality of the material being tested and inspected. In the industries of metal smelting, heat treatment and the like, shrinkage separation is a key procedure for material sample preparation, and aims to reduce subsequent workload, reduce sample amount and meet the sampling amount required by inspection.
The division of the sample is divided into on-line and off-line, and the main requirement of the division by adopting a machine is to improve the division accuracy and reduce the labor intensity.
The chinese patent document with application number 201110030783.4 discloses a shrinkage chute, comprising a collecting hopper and a chute connected with the bottom of the collecting hopper, wherein an included angle of more than 0 degrees and less than 90 degrees is formed between the chute and the axis of the collecting hopper, and a mounting seat connected with the chute is coaxial with the collecting hopper. The dividing chute is arranged on the vibration feeding dividing mechanism, and the mounting seat of the dividing chute is connected with the rotary main shaft, so that the dividing chute can rotate. But it can only scale down proportionally.
To the best of the applicant's knowledge, the prior art fails to realize full automation of the whole operation processes of weighing, sample storage and removal, vibration feeding, shrinkage sampling, residual material storage and the like; and only the scaling down can be realized in proportion, namely the scaling down is carried out according to the preset proportion of the feeding, and the sampling scaling down according to preset quality can not be practically realized.
Disclosure of Invention
The primary object of the present invention is: the full-automatic dividing machine for the whole dividing operation is provided, so that the working efficiency is greatly improved, and the labor intensity is reduced.
A further object of the invention is: the full-automatic dividing machine can divide according to preset quality and has a simple structure.
In order to achieve the primary purpose, the basic technical scheme of the full-automatic dividing machine is as follows: the weighing hopper comprises a feeding hole supported at the uppermost part of a base, wherein the bottom of the feeding hole is positioned on a weighing hopper with a weighing sensor, and the bottom of the weighing hopper is provided with a discharging channel capable of being opened and closed; the lower part of the discharging channel is provided with a vibrating material box high end with a chute, the lower end of the vibrating material box is provided with a rotatable blanking pipe driven by a dividing motor, the outlet of the blanking pipe faces to the upper part of the conical side wall of the dividing funnel, the bottom of the dividing funnel is provided with a sample storage outlet, and the conical side wall is provided with a sample outlet with a preset sampling dividing angle.
During operation, granular materials to be reduced enter the weighing hopper from the sample inlet, the discharging channel is opened after weighing and recording, the materials fall into the vibrating material box, are uniformly dusted to the blanking pipe under the action of the vibrating motor, fall into the reducing hopper in the rotating process driven by the reducing motor, fall into the storage tank from the sample storage outlet for storage mostly, and flow out from the sample outlet with preset graduation to the sampling nozzle for collection at least according to requirements. Therefore, the invention realizes full automation of the whole process by reasonable connection arrangement of all parts, and can obviously improve the working efficiency and lighten the labor intensity.
According to the invention, the sample storage device positioned below the sample storage outlet is supported on the base, the sample storage device comprises a horizontal indexing disc driven by an indexing motor, a group of sample storage tanks with sliding valves capable of being reset and closed are circumferentially arranged on the indexing disc, and when the sample storage tanks are positioned right below the sample storage outlet, the corresponding sliding valves are right opposite to the telescopic ends of the opening cylinders arranged on the base. Therefore, feeding can be realized, the bottom of the sample storage tank is automatically controlled to be opened after the sample storage tank is shifted, expired materials in the tank are discarded and emptied, and then the tank is automatically closed to wait for receiving and storing. Therefore, the division and storage of different materials can be automatically carried out continuously for many times.
In order to achieve the further object, the full-automatic dividing machine of the invention comprises a control circuit, wherein the signal output end of the weighing sensor is connected with the weighing signal input end of the control circuit, and the control output end of the control circuit is connected with the controlled end of the dividing motor for controlling the weekly pause time t of the dividing motor according to the following calculation result 2 ：
t 2 =（M Total (S) θ-360m Fixing device ）/6N m Fixing device
In the middle of
t 2 -dividing the weekly suspension time of the motor in units of: minute (min)
M Total (S) -initial mass of material transmitted from the weighing sensor, unit: gram (g)
θ—predetermined sampling indexing angle of the conical sidewall of the separating funnel, unit: degree of
m Fixing device -predetermined mass fraction of material, unit: gram (g)
N-rotation speed of blanking pipe, unit: revolutions per minute.
The thought and calculation of the shrinkage quality control are discovered and summarized in long-term practice by the applicant, and experiments prove that no matter how much material is fed, sampling materials with preset quality can be accurately shrunk.
Further, the vibration material box is arranged on the vibration pad and is connected with the vibration starting motor.
Further, the weighing hopper is supported on the bracket through a weighing sensor.
Further, the sample outlet is inclined and gradually reduced.
In a word, the invention not only realizes the full-automatic operation stability of the whole operation processes of weighing a batch of materials, storing and discarding samples, vibrating feeding, dividing and sampling, storing the residual materials and the like, but also has the advantages of accuracy, precise mass division, great reduction of labor intensity and improvement of production efficiency.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a perspective view showing an external structure according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of the internal structure of the embodiment of fig. 1.
Fig. 3 is a schematic perspective view of the vibration dividing portion in fig. 2.
Fig. 4 is a schematic perspective view of the portion of the sample storage device of fig. 2.
Detailed Description
Example 1
The basic constitution of the full-automatic dividing machine for laboratory is as shown in figures 1 and 2, a base 1 supports a feed inlet 2 through the uppermost part of a stand column, the bottom of the feed inlet 2 is positioned on a weighing hopper 4, the weighing hopper 4 is supported on a bracket through a weighing sensor 3, and the bottom is a discharge channel which is driven by an air cylinder 5 and can be opened and closed.
The lower part of the discharging channel is provided with the high end of a vibrating material box 6 with a chute. The concrete structure of this part is shown in fig. 3, and the lower end of the vibration material box 6 is provided with a blanking pipe 8 which is driven by a speed reducer dividing motor 10 through a belt 11 in a speed reducing transmission manner and can rotate around a vertical shaft. Since the vibrating cartridge 6 with the chute is arranged on the vibrating pad 12 and is engaged with the vibration starting motor 13, the vibration starting motor 13 is driven to start vibrating. The outlet of the down pipe 8 is directed towards the upper part of the conical side wall of the separating funnel 9. The bottom of the shrinkage funnel 9 is provided with a sample storage outlet 9-1, the side wall of the cone is provided with an inclined taper sample outlet 9-2 with a preset sampling indexing angle, and the lower end of the inclined taper sample outlet is provided with a sampling nozzle 9-3. When the dividing motor drives the blanking pipe to rotate at a constant speed, the sample outlet with a preset sampling dividing angle can realize dividing of a preset proportion.
Because the materials with the mass changing in a certain range are required to be reduced according to the required mass in practice, the full-automatic dividing machine of the embodiment comprises a control circuit which is arranged in an electrical control cabinet and comprises a PLC, the signal output end of a weighing sensor is connected with the weighing signal input end of the control circuit, the control output end of the control circuit is connected with a dividing motor, a starting motor, an indexing motor, a controlled end of a cylinder, a starting cylinder and the like, and the full-automatic dividing machine is used for controlling the weekly pause time t of the dividing motor according to the following calculation result 2 ：
t 2 =（M Total (S) θ-360m Fixing device ）/6N m Fixing device
In the middle of
t 2 -dividing the weekly suspension time of the motor in units of: minute (min)
M Total (S) -initial mass of material transmitted from the weighing sensor, unit: gram (g)
θ—predetermined sampling indexing angle of the conical sidewall of the separating funnel, unit: degree of
m Fixing device -predetermined mass fraction of material, unit: gram (g)
N-rotation speed of blanking pipe, unit: revolutions per minute.
Since the dividing motor with the rotation speed n in the embodiment passes through the reduction ratio i 1 Is a speed reducer with a speed reduction ratio of i 2 When the belt drive of (a) drives the blanking pipe, thus N=n/(i) 1* i 2 ）。
The specific derivation process of the above formula is as follows:
let the initial mass of the material be M Total (S) The method comprises the steps of carrying out a first treatment on the surface of the The opening angle of the preset sampling indexing angle of the conical side wall of the shrinkage funnel is theta; the rotating speed of the dividing motor is n; the motor has a reduction ratio of i 1 The method comprises the steps of carrying out a first treatment on the surface of the Pulley reduction ratio i 2 The method comprises the steps of carrying out a first treatment on the surface of the The predetermined division mass is m Fixing device The method comprises the steps of carrying out a first treatment on the surface of the The chute rotates for a circle within a period T for a period of time T 1 The method comprises the steps of carrying out a first treatment on the surface of the The stay time after the chute makes one turn is t 2 ；
When the speeds of the material flows in one period T are equal, the mass of the material flowing in each period T is respectivelyIs m 1 m 2 m 3 .......m n The chute rotates for a circle T in each period T 1 The mass of the discharged materials is m respectively k1 m k2 m k3 .......m kn ；
From the division ratioIs available in the form of
Total mass m of material participating in fixed proportion division a =m Fixing device
Time t of chute rotation 1 =
M Total (S) =m 1 + m 2 + m 3 .......+m n
m a =m k1 + m k2 + m k3 .......+m kn
m k1 =
m k2 =
m kn =
Thereby can be obtained
I.e. t 2 =。
In addition, the base 1 of the present embodiment also supports a sample storage device 14 located under the sample storage outlet 9-1, the specific structure of which is shown in fig. 4, the sample storage device 14 comprises a horizontal indexing disk 14-2 driven by an indexing motor 14-1 through a transmission mechanism, a group of twelve sample storage tanks 14-3 with a resettable closing slide valve 14-4 at the bottom are circumferentially arranged on the indexing disk 14-2, and when the sample storage tank 14-3 is located right under the sample storage outlet 9-1, the slide valve 14-4 is opposite to the telescopic end of an opening cylinder 14-5 arranged on the base 1. Therefore, the sliding valve can be controlled to be opened and closed by opening the cylinder as required, so that the stored or emptied and reduced surplus materials can be accepted or discarded, and the indexing and continuous multiple times of automation can be controlled to accept or discard.
In this embodiment, since the dividing motor, the indexing motor, the cylinder, the opening cylinder and the like are controlled by the PLC of the control circuit, the following automatic process can be realized: the method comprises the steps of feeding a sample inlet into a weighing hopper, rotating a sample storage device (12 stations) clockwise to form a station, opening a slide valve at the lower part of a sample storage tank, discarding (emptying the sample storage tank) out of expired materials in the sample storage tank, closing the slide valve at the lower part of the sample storage tank, recording the weight of the materials in the weighing hopper by a weighing sensor, uploading the weight to a PLC (programmable logic controller), opening a group of cylinders below the weighing hopper (initial state is closed), enabling the materials to fall into a vibrating material box, uniformly advancing the materials under the action of a vibrating motor, enabling the materials to fall into a shrinkage hopper through a blanking pipe, driving the blanking pipe to rotate through the shrinkage motor, automatically calculating the retention time of the shrinkage motor after the blanking pipe rotates for one circle, enabling most of the materials entering the shrinkage hopper to fall into the sample storage tank for preservation, and enabling the materials to flow to a sampling nozzle from the discharging port according to the quality requirements.
Experiments prove that the sample discarding time can be automatically adjusted according to the sample feeding quality and under the condition of unchanged sample dividing proportion by adopting the sample dividing machine of the embodiment, so that the sample dividing according to the required quality is realized, the intelligent full automation is realized, the dividing precision is high, and the development trend of the future fixed quality dividing is practically met.
In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (5)
1. The utility model provides a full-automatic extension, includes the feed inlet that supports in the base top, its characterized in that: the bottom of the feed inlet is positioned on a weighing hopper with a weighing sensor, and the bottom of the weighing hopper is a discharge channel which can be opened and closed; the lower end of the discharging channel is provided with a rotatable blanking pipe driven by a dividing motor, the outlet of the blanking pipe faces to the upper part of a conical side wall of the dividing funnel, the bottom of the dividing funnel is provided with a sample storage outlet, and the conical side wall is provided with a sample outlet with a preset sampling dividing angle;
the control circuit is used for controlling the weekly pause time t of the dividing motor according to the following calculation result 2 ：
t 2 =（M Total (S) θ-360m Fixing device ）/6N m Fixing device
In the middle of
t 2 -dividing the weekly suspension time of the motor in units of: minute (min)
M Total (S) -initial mass of material transmitted from the weighing sensor, unit: gram (g)
θ—predetermined sampling indexing angle of the conical sidewall of the separating funnel, unit: degree of
m Fixing device -predetermined mass fraction of material, unit: gram (g)
N-rotation speed of blanking pipe, unit: revolutions per minute.
2. The fully automatic dividing machine according to claim 1, wherein: the sample storage device is supported on the base and comprises a horizontal indexing disc driven by an indexing motor, a group of sample storage tanks with sliding valves capable of being reset and closed are circumferentially arranged on the indexing disc, and when the sample storage tanks are positioned right below the sample storage outlet, the sliding valves are right opposite to the telescopic ends of the opening cylinders arranged on the base.
3. A fully automatic dividing machine according to claim 2, wherein: the vibration material box is arranged on the vibration pad and is connected with the vibration starting motor.
4. A fully automatic dividing machine according to claim 3, wherein: the weighing hopper is supported on the bracket through a weighing sensor.
5. The fully automatic dividing machine according to claim 4, wherein: the sample outlet is inclined and gradually reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810762980.7A CN108760434B (en) | 2018-07-12 | 2018-07-12 | Full-automatic dividing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810762980.7A CN108760434B (en) | 2018-07-12 | 2018-07-12 | Full-automatic dividing machine |
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| CN108760434A CN108760434A (en) | 2018-11-06 |
| CN108760434B true CN108760434B (en) | 2024-02-13 |
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| CN109533406A (en) * | 2018-12-25 | 2019-03-29 | 长沙开元仪器有限公司 | A kind of reduction device |
| CN109499731A (en) * | 2019-01-14 | 2019-03-22 | 香农工业设备制造南京有限公司 | Applied to ore class or the automatic grinding machine of coal class raw material |
| CN112015130B (en) * | 2019-06-01 | 2023-01-20 | 上海梅山钢铁股份有限公司 | Material quantitative division control device and control method |
| CN113776636A (en) * | 2021-09-15 | 2021-12-10 | 力鸿检验集团有限公司 | Operation method of monitoring device of hybrid splitter |
| CN115889159A (en) * | 2022-10-28 | 2023-04-04 | 英飞智信（苏州）科技有限公司 | Impurity detection device and method for solid particle inspection |
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2018
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1110087A (en) * | 1997-06-23 | 1999-01-19 | Kobe Steel Ltd | Automatic particle size measuring device for sand |
| CN102175479A (en) * | 2011-01-28 | 2011-09-07 | 长沙开元仪器股份有限公司 | Vibration feeding dividing mechanism and dividing chute thereof |
| CN203259357U (en) * | 2013-05-23 | 2013-10-30 | 北京西玛智深科技有限公司 | Automatic grading apparatus for sampling |
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