CN114719944A - Automatic sampling and weighing method for belt weigher - Google Patents
Automatic sampling and weighing method for belt weigher Download PDFInfo
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- CN114719944A CN114719944A CN202210544136.3A CN202210544136A CN114719944A CN 114719944 A CN114719944 A CN 114719944A CN 202210544136 A CN202210544136 A CN 202210544136A CN 114719944 A CN114719944 A CN 114719944A
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- sampling
- transmission device
- trolley
- belt transmission
- weighing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
- G01G11/08—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/24—Weighing mechanism control arrangements for automatic feed or discharge
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sampling And Sample Adjustment (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses an automatic sampling and weighing method for a belt scale, which comprises the steps of sampling and weighing materials by using a blanking weighing device; the sampling and weighing process comprises the following steps: the control unit controls the sampling trolley to do reciprocating uniform motion from left to right and from right to left on the slide way of the secondary belt transmission device, sampling and charging are carried out when the sampling trolley runs to a discharging point under the primary belt transmission device, the accurate unit discharging amount of the primary belt transmission device is obtained by calculating the product of the running speed ratio of the sampling trolley and the secondary belt transmission device and the weighing weight of the sampling trolley, and then the push rod of the sampling trolley pushes the material cleaning plate to move to discharge the tray. The invention can solve the problem that the existing belt scale has large measurement error and influences the sintering quality of mixed material components.
Description
Technical Field
The invention relates to the technical field of steel manufacturing and equipment thereof, in particular to a method for automatically sampling and weighing the blanking amount of a belt weigher in sintering.
Background
In sintering production, accurate blanking of a bin is an important part of homogeneous sintering production. The existing belt weigher comprises a sampling trolley on a belt transmission device with an inductive electronic scale and a sampling trolley on the belt transmission device, wherein the sampling trolley comprises a tray driven by a power transmission device, the sampling trolley is positioned under a hopper on one side of the belt transmission device, the tray of the sampling trolley takes samples from the material received from the hopper, then the inductive electronic scale weighs and counts the materials received in the sampling trolley and the tray, finally the belt transmission device conveys the sampling trolley to the other side of the belt transmission device, and the power transmission device on the sampling trolley drives the tray to overturn and unload.
Because the response electronic scale counts the material in sample dolly and the tray, need subtract the weight of sample dolly, because the weight error of belt drive itself and the weight error of sample dolly, and the belt can not the error of other factors such as real-time calibration, the error after the totalization is great, and the tray upset of sample dolly is unloaded often and is remained the clout in the tray, can't effectively reduce and weigh the error, be difficult to obtain more accurate blanking volume, cause follow-up mixture composition deviation very big, influence sintering composition stability.
Therefore, the belt scale automatic sampling and weighing method can automatically weigh the belt blanking amount, can take times of the manual sampling weight once, and can control the sampling weight as required.
Disclosure of Invention
The invention aims to solve the problem of providing an automatic sampling and weighing method for a belt scale, and aims to solve the problem that the existing belt scale is large in measurement error and affects the sintering quality of mixed materials.
In order to solve the problems, the technical scheme of the invention is as follows: the automatic sampling and weighing method of the belt scale comprises the steps of sampling and weighing materials by using a blanking weighing device;
the blanking weighing device comprises a belt transmission device below the hopper, an inductive electronic scale and a sampling trolley with a tray, the belt transmission device comprises two stages of a primary belt transmission device and a secondary belt transmission device, a velometer and an induction electronic scale are arranged on the two stages, the primary belt transmission device is positioned below the hopper, the secondary belt transmission device is positioned below the primary belt transmission device, the sampling trolley is positioned on the secondary belt transmission device and moves on a slideway on the secondary belt transmission device through a travelling wheel, an inductive electronic scale is arranged below a tray of the sampling trolley, a material cleaning plate which is pushed by a push rod with power to move back and forth is arranged on the front side of the tray, the sampling trolley is provided with a velocimeter, and the inductive electronic scales and the velocimeter are connected with a control unit; the travelling wheel of the sampling trolley is connected with a transmission motor, and the transmission motor is connected with the control unit; a push rod of the sampling trolley is connected with a hydraulic cylinder, the hydraulic cylinder is connected with the control unit, and the tray is a rectangular chute with an opening at the upper part;
the sampling and weighing process comprises the following steps: the control unit controls the sampling trolley to do reciprocating uniform motion from left to right and from right to left on the slide way of the secondary belt transmission device, sampling and charging are carried out when the sampling trolley runs to a discharging point under the primary belt transmission device, the accurate unit discharging amount of the primary belt transmission device is obtained by calculating the product of the running speed ratio of the sampling trolley and the secondary belt transmission device and the weighing weight of the sampling trolley, and then the push rod of the sampling trolley pushes the material cleaning plate to move to discharge the tray.
In the above technical solution, a more specific solution may be: the control unit is a PLC controller;
the sampling and weighing process comprises the following steps:
A. the control unit controls the sampling trolley to move at a constant speed from left to right on a slideway of the secondary belt transmission device, and the sampling trolley performs sampling and loading when moving to the front of a discharging point under the primary belt transmission device;
B. the velocimeter measures the movement speed of the secondary belt transmission device and the movement speed of the sampling trolley, the time of the 1m throwing disc passing through the blanking point and the sampling time of the sampling trolley are in inverse proportion to the movement speeds of the two, so the sampling time of the sampling trolley is the product of the time of the 1m throwing disc passing through the blanking point and the ratio of the movement speed of the secondary belt transmission device and the movement speed of the sampling trolley; the sampling trolley stops at the rear position of the blanking point after sampling is finished by the blanking point, the sampling weight of the sampling trolley is obtained by the induction electronic scale, when the sampling trolley and the secondary belt transmission device move at a constant speed, the sampling weight and the unit blanking amount of the sampling trolley are in direct proportion to the sampling time of the sampling trolley and the secondary belt transmission device, and the unit blanking amount is the product of the sampling weight of the sampling trolley and the ratio of the movement speed of the sampling trolley and the movement speed of the secondary belt transmission device because the 1m throwing disc passes through the blanking point time and the sampling time of the sampling trolley are in inverse proportion to the movement speeds of the sampling trolley and the secondary belt transmission device; the control unit controls a hydraulic cylinder of the sampling trolley to drive a push rod to push a material cleaning plate to move so as to unload the tray, and primary sampling weighing is completed;
C. and C, the sampling trolley continuously runs to the tail end on the secondary belt transmission device and then returns, and when the sampling trolley passes through the discharging point again, the step B is repeated, and secondary sampling weighing is completed.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the automatic sampling and weighing method of the belt weigher adopts two stages of belt transmission devices which are stacked up and down, a sampling trolley moves on a second stage of belt transmission device relatively, induction electronic scales and a velocimeter are arranged on the two stages of belt transmission devices and the sampling trolley, and the accurate unit blanking amount of the first stage of belt transmission device is obtained by calculating the product of the running speed ratio of the sampling trolley and the second stage of belt transmission devices and the weighing weight of the sampling trolley; the sampling trolley of the device adopts the material cleaning plate to horizontally push the material to be unloaded from the front end of the tray to the rear end of the tray, so that the material is more completely unloaded, and the sampling weight is more accurate. The device can multiply the manual sampling weight and control the sampling weight as required, finishes the weighing of the unit blanking amount of the primary belt transmission device, reduces the manual sampling deviation and the sampling danger coefficient, and provides certain technical support for reducing the blanking deviation for homogeneous sintering.
Drawings
FIG. 1 is an isometric view of an embodiment of the present invention;
FIG. 2 is an isometric view of a sampling trolley according to an embodiment of the present invention;
fig. 3 is a left side view of an embodiment of the present invention.
Detailed Description
The embodiments of the invention will be further described in detail below with reference to the following drawings:
the automatic sampling and weighing method for the belt weigher comprises the step of sampling and weighing materials by using a blanking weighing device.
The blanking weighing device comprises a primary belt transmission device 2 and a secondary belt transmission device 3 which are arranged below a hopper 1, wherein a velocimeter 6 and an induction electronic scale 7 are arranged on two stages, and the secondary belt transmission device 3 is arranged below the primary belt transmission device 2, as shown in figures 1 to 3.
The sampling trolley 4 is positioned on the secondary belt transmission device 3 and moves on a slide rail 3-1 on the secondary belt transmission device through a travelling wheel 4-4, an induction electronic scale 7 is arranged below a tray 4-1 of the sampling trolley 4, a material cleaning plate 4-2 which is pushed to move back and forth by a push rod 4-3 with power is arranged on the front side of the tray 7, the push rod 4-2 of the sampling trolley is connected with a hydraulic cylinder 4-6, and the travelling wheel 4-4 of the sampling trolley is connected with a transmission motor 4-5; the material cleaning plate 4-2 is horizontally pushed from the front end of the tray 4-1 to the rear end of the tray for horizontal discharging, so that discharging is more complete and sampling weight is more accurate; the sampling trolley 4 is provided with a velocimeter 6.
The induction electronic scales 7 and the speed measuring instruments 6 are connected with a control unit 5, the hydraulic cylinders 4-6 and the transmission motors 4-5 are connected with the control unit 5, and the control unit 5 is a PLC controller.
The sampling and weighing process comprises the following steps:
the PLC controller controls the sampling trolley 4 to move at a constant speed from left to right on the slideway 3-1 of the secondary belt transmission device, when the sampling trolley moves to the front of a blanking point under the primary belt transmission device 2, sampling and charging are carried out, and meanwhile, the velocimeter 6 measures the movement speed V of the secondary belt transmission device 31And the moving speed V of the sampling trolley 42The time of 1m throwing disc passing through a blanking point is T1I.e. T1=1/V1The sampling time of the sampling trolley is T2I.e. T2=1/V2Therefore, T2=T1×（V1/V2) After the sampling trolley passes through the blanking point and finishes sampling, the sampling trolley stops at the rear position of the blanking point, and the weight M is obtained by the induction electronic scale 72When the sampling trolley and the secondary belt transmission device move at a constant speed, the sampling weight and the unit blanking amount of the sampling trolley are in direct proportion to the sampling time of the sampling trolley and the secondary belt transmission device, and the unit blanking amount is M1I.e. M2/M1=T2/T1And due to M2/M1=T2/T1=V1/V2，M1=M2×（V2/V1) (ii) a The PLC controller controls a hydraulic cylinder 4-6 of the sampling trolley 4 to drive a push rod 4-3 to push a material cleaning plate 4-2 to move so as to unload the tray 4-1, and the first sampling weighing is completed; and the sampling trolley 4 continuously runs to the tail end on the secondary belt transmission device 3 and then returns, when the sampling trolley passes through the discharging point of the primary belt transmission device again after reciprocating on the secondary belt transmission device, the operations are repeated, the second-stage sampling and weighing are completed, and the sampling and weighing are finished.
The method adopts two-stage belt transmission devices which are arranged in an up-and-down stacked mode, the sampling trolley 4 moves on the second-stage belt transmission device 3 relatively, induction electronic scales 7 and a velocimeter 6 are arranged on the two-stage belt transmission devices and the sampling trolley, and the accurate unit blanking amount of the first-stage belt transmission device is obtained by calculating the product of the running speed ratio of the sampling trolley and the second-stage belt transmission device and the weighing weight of the sampling trolley; and the whole process of sampling and material clearing of the sampling trolley is realized, the automatic sampling and material clearing is realized, the PLC automatically calculates the sampling and material blanking amount of various materials, the personnel participation is not needed, and the automatic operation is realized.
The device and the method can multiply the manual sampling weight and control the sampling weight as required, complete the weighing of the unit blanking amount of the primary belt transmission device, reduce the manual sampling deviation and the sampling danger coefficient, and provide a certain technical support for reducing the blanking deviation in homogeneous sintering.
Claims (2)
1. An automatic sampling and weighing method for a belt scale is characterized in that: comprises sampling and weighing materials by using a blanking weighing device;
the blanking weighing device comprises a belt transmission device below the hopper, an inductive electronic scale and a sampling trolley with a tray, the belt transmission device comprises two stages of a primary belt transmission device and a secondary belt transmission device, a velometer and an induction electronic scale are arranged on the two stages, the primary belt transmission device is positioned below the hopper, the secondary belt transmission device is positioned below the primary belt transmission device, the sampling trolley is positioned on the secondary belt transmission device and moves on a slideway on the secondary belt transmission device through a travelling wheel, an inductive electronic scale is arranged below a tray of the sampling trolley, a material cleaning plate which is pushed by a push rod with power to move back and forth is arranged on the front side of the tray, the sampling trolley is provided with a velocimeter, and the inductive electronic scales and the velocimeter are connected with a control unit; the travelling wheel of the sampling trolley is connected with a transmission motor, and the transmission motor is connected with the control unit; a push rod of the sampling trolley is connected with a hydraulic cylinder, the hydraulic cylinder is connected with the control unit, and the tray is a rectangular chute with an opening at the upper part;
the sampling and weighing process comprises the following steps: the control unit controls the sampling trolley to do reciprocating uniform motion from left to right and from right to left on the slide way of the secondary belt transmission device, sampling and charging are carried out when the sampling trolley runs to a discharging point under the primary belt transmission device, the accurate unit discharging amount of the primary belt transmission device is obtained by calculating the product of the running speed ratio of the sampling trolley and the secondary belt transmission device and the weighing weight of the sampling trolley, and then the push rod of the sampling trolley pushes the material cleaning plate to move to discharge the tray.
2. The automatic sampling and weighing method of the belt scale according to claim 1, characterized in that: the control unit is a PLC controller;
the sampling and weighing process comprises the following steps:
A. the control unit controls the sampling trolley to move at a constant speed from left to right on a slideway of the secondary belt transmission device;
B. when the sampling trolley runs to the front of a discharging point under the primary belt transmission device, sampling and charging are carried out; the velocimeter measures the movement speed of the secondary belt transmission device and the movement speed of the sampling trolley, the time of the 1m throwing disc passing through the blanking point and the sampling time of the sampling trolley are in inverse proportion to the movement speeds of the two, so the sampling time of the sampling trolley is the product of the time of the 1m throwing disc passing through the blanking point and the ratio of the movement speed of the secondary belt transmission device and the movement speed of the sampling trolley; the sampling trolley stops at the rear position of the blanking point after sampling is finished by the blanking point, the sampling weight of the sampling trolley is obtained by the inductive electronic scale, when the sampling trolley and the secondary belt transmission device move at a uniform speed, the sampling weight and the unit blanking amount of the sampling trolley are in direct proportion to the sampling time of the sampling trolley and the secondary belt transmission device, and the unit blanking amount is the product of the sampling weight of the sampling trolley and the ratio of the movement speed of the sampling trolley and the movement speed of the secondary belt transmission device because the time when 1m of throwing disc passes through the blanking point and the sampling time of the sampling trolley are in inverse proportion to the movement speed of the sampling trolley and the movement speed of the sampling trolley; the control unit controls a hydraulic cylinder of the sampling trolley to drive a push rod to push a material cleaning plate to move so as to unload the tray, and primary sampling weighing is completed;
C. and C, the sampling trolley continuously runs to the tail end on the secondary belt transmission device and then returns, and when the sampling trolley passes through the discharging point again, the step B is repeated, and secondary sampling weighing is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210544136.3A CN114719944A (en) | 2022-05-19 | 2022-05-19 | Automatic sampling and weighing method for belt weigher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210544136.3A CN114719944A (en) | 2022-05-19 | 2022-05-19 | Automatic sampling and weighing method for belt weigher |
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| CN114719944A true CN114719944A (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210544136.3A Pending CN114719944A (en) | 2022-05-19 | 2022-05-19 | Automatic sampling and weighing method for belt weigher |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200958967Y (en) * | 2006-10-18 | 2007-10-10 | 娄底市裕德科技有限公司 | Material inspector for electronic belt balance |
| CN102012253A (en) * | 2010-11-18 | 2011-04-13 | 江苏赛摩集团有限公司 | High-precision belt weighing device |
| CN102445260A (en) * | 2011-09-22 | 2012-05-09 | 山东理工大学 | Automatic weighing loading device and intelligent compensation digital control method |
| US20140062709A1 (en) * | 2012-08-30 | 2014-03-06 | Frank S. Hyer | System and methods for belt conveyor weighing |
| CN205240587U (en) * | 2015-12-21 | 2016-05-18 | 西安电炉研究所有限公司 | Portable dolly of weighing |
| CN105865590A (en) * | 2016-05-13 | 2016-08-17 | 北汽福田汽车股份有限公司 | Metering method and device and feeding system with metering device |
| CN110864794A (en) * | 2019-11-06 | 2020-03-06 | 北京首钢自动化信息技术有限公司 | Batching belt scale online detection device and method thereof |
-
2022
- 2022-05-19 CN CN202210544136.3A patent/CN114719944A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200958967Y (en) * | 2006-10-18 | 2007-10-10 | 娄底市裕德科技有限公司 | Material inspector for electronic belt balance |
| CN102012253A (en) * | 2010-11-18 | 2011-04-13 | 江苏赛摩集团有限公司 | High-precision belt weighing device |
| CN102445260A (en) * | 2011-09-22 | 2012-05-09 | 山东理工大学 | Automatic weighing loading device and intelligent compensation digital control method |
| US20140062709A1 (en) * | 2012-08-30 | 2014-03-06 | Frank S. Hyer | System and methods for belt conveyor weighing |
| CN205240587U (en) * | 2015-12-21 | 2016-05-18 | 西安电炉研究所有限公司 | Portable dolly of weighing |
| CN105865590A (en) * | 2016-05-13 | 2016-08-17 | 北汽福田汽车股份有限公司 | Metering method and device and feeding system with metering device |
| CN110864794A (en) * | 2019-11-06 | 2020-03-06 | 北京首钢自动化信息技术有限公司 | Batching belt scale online detection device and method thereof |
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