CN113247595A - High-precision stable discharging device in lithium battery industry and control method thereof - Google Patents
High-precision stable discharging device in lithium battery industry and control method thereof Download PDFInfo
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- CN113247595A CN113247595A CN202110479986.5A CN202110479986A CN113247595A CN 113247595 A CN113247595 A CN 113247595A CN 202110479986 A CN202110479986 A CN 202110479986A CN 113247595 A CN113247595 A CN 113247595A
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- 238000007599 discharging Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 21
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 19
- 238000003860 storage Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 62
- 230000005611 electricity Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims 2
- 229910001416 lithium ion Inorganic materials 0.000 claims 2
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 abstract description 4
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 description 6
- 230000004580 weight loss Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a high-precision stable blanking device in the lithium battery industry and a control method thereof, wherein the blanking device comprises at least two buffer storage bins, a blanking port of each buffer storage bin is connected with a feeding bin through a conveying pipeline, a feeding valve is arranged on each conveying pipeline, a weightless scale is arranged in the bottom of each feeding bin, a weightless scale sensor is arranged in each weightless scale, a speed-adjustable blanking mechanism is arranged below the blanking port of each feeding bin, the speed-adjustable blanking mechanism is used for adjusting the speed through a controller, and the controller is simultaneously connected with the feeding valve and the weightless scale sensor; the control method realizes closed-loop control through a control program, realizes continuous, stable and uninterrupted discharging of the discharging device, improves batch charging metering precision, and is not interfered by external factors. The invention is suitable for the online simultaneous stable blanking of two or more than two kinds of ultrahigh molecular weight polyethylene, and can provide guarantee for preparing high-stability and high-consistency diaphragm products.
Description
Technical Field
The invention relates to a high-precision stable discharging device in a lithium battery industry and a control method thereof, and belongs to the field of production of lithium battery diaphragms.
Background
The raw material used in the wet-process lithium battery diaphragm industry is ultra-high molecular weight polyethylene, more than two types of polyethylene with different ultra-high molecular weights (more than or equal to 40 ten thousand) can be used at the same time in the use process of the ultra-high molecular weight polyethylene, and enter an extruder through a metering system, and the requirements on the uniformity of mixed materials and the stability of blanking are high in the use process at the same time.
The prior known blanking system has two mixing schemes, one scheme is to use a high-speed mixer to carry out premixing and put the premixed material into a blanking system after the premixed material is mixed. The other method is on-line mixing, wherein two bins share one weightless scale for blanking, and the materials are stirred and mixed by a stirring paddle after entering one mixing bin. In the two schemes, the first mixing scheme occupies a large area, is high in cost, is complex to switch among different formulas, and is difficult to meet production requirements. In the second scheme, although continuous on-line material mixing and blanking can be realized, the stability is poor, the fluctuation is large, and the product quality is greatly influenced.
Disclosure of Invention
The invention aims to provide a high-precision stable blanking device in the lithium battery industry and a control method thereof, which are suitable for online simultaneous stable blanking of two or more types of ultrahigh molecular weight polyethylene so as to prepare a high-stability and high-consistency diaphragm product.
On one hand, one of the technical schemes adopted by the invention is as follows: the utility model provides a stable unloader of lithium electricity trade high accuracy, its includes two at least buffer memory feed bins, and the feed bin is all connected through conveying pipeline to the feed gate of every buffer memory feed bin to all install the feed valve on every conveying pipeline, weightless balance all is equipped with in the bottom in feed bin, the inside weightless balance sensor that is equipped with of weightless balance, the feed gate below in feed bin is equipped with adjustable speed unloading mechanism, the speed regulation is carried out through the controller to speed regulation unloading mechanism, feed valve and weightless balance sensor are connected simultaneously to the controller.
Furthermore, adjustable speed unloading mechanism includes unloading screw rod and adjustable variable frequency driver, unloading screw rod one end is as the discharge end, and the other end links to each other with adjustable variable frequency driver.
Furthermore, the adjustable variable frequency driver comprises a driving motor and a variable frequency speed regulator, the variable frequency speed regulator is connected with the controller, and the controller controls the rotating speed of the driving motor through the variable frequency speed regulator.
Further, the buffer memory feed bin sets up two, is first buffer memory feed bin and second buffer memory feed bin respectively, the below of first buffer memory feed bin is provided with first feeding storehouse, the below of second buffer memory feed bin is provided with second feeding storehouse, the below in first feeding storehouse is provided with first unloading screw rod, the below in second feeding storehouse is provided with second unloading screw rod.
Furthermore, the discharge ends of the first and second discharging screws are arranged oppositely, and a Y-shaped discharging device is arranged below the discharge ends of the two discharging screws.
Furthermore, a discharge port of the Y-shaped feeder is connected with a distributor, a distribution port of the distributor is connected with a feeding port of the extruder, and the distributor is used for distributing materials to different extruders.
Furthermore, a material level upper limit mark and a material level lower limit mark are arranged in the feeding bin.
Furthermore, the weightlessness scale sensor is a weight sensor, the weight sensor is connected with the controller and transmits a detected weight signal to the controller, and the controller controls the opening and closing of the feeding valve according to the received weight signal.
Further, the controller adopts a PLC controller.
On the other hand, the second technical scheme adopted by the invention is as follows: a control method of a high-precision stable blanking device in the lithium battery industry comprises the following steps:
the method comprises the following steps: presetting working modes in a control module, wherein each working mode corresponds to different materials for mixing, and each working mode also corresponds to different feeding speeds, upper limit weight of the materials and lower limit weight of the materials according to different materials;
step two: selecting a working mode suitable for the material according to the material in the cache bin, and adjusting the feeding speed to the speed in the mode by the controller through the variable-frequency speed regulator after the mode is selected;
step three: in the feeding process, a weightlessness scale sensor in the weightlessness scale transmits a weight signal detected by the weightlessness scale sensor to a controller of the control module in real time;
step four: when the detected weight of the materials in the feeding bin is lower than the preset lower limit weight of the materials, the controller controls the feeding valve to be opened, and at the moment, the buffer storage bin starts to feed the materials to the feeding bin;
step five: when the detected weight of the materials in the feeding bin reaches the preset upper limit weight of the materials, the controller controls the feeding valve to be closed, and at the moment, the cache bin stops feeding the materials to the feeding bin;
step six: and repeating the fourth step and the fifth step under the condition that the feeding speed is constant.
The invention has the following beneficial effects:
(1) the invention can be suitable for the metering control of raw materials of different types and different densities;
(2) in the invention, each material is controlled by an independent weightless scale, and the baiting of each material is independent and not interfered with each other;
(3) the invention combines volume feeding (keeping constant feeding speed) and weight feeding, thus ensuring continuous and stable feeding;
(4) the invention realizes that the raw materials metered by different weightless scales are fed into the extruder through the Y-shaped feed opening;
(5) the distributor is connected below the Y-shaped feed opening, so that the feeding device is suitable for feeding more than 2 extruders at the same time, and the working efficiency is improved;
(6) the invention can change the rotating speed of the discharging screw rod through the variable-frequency speed regulator and adjust the discharging amount;
(7) the whole blanking of the invention is automatically controlled by a PLC, and the invention can continuously work.
Drawings
FIG. 1 is a schematic view of the overall structure of the blanking device of the present invention;
fig. 2 is a control schematic of the present invention.
Labeled as: 1-a first buffer storage bin, 2-a second buffer storage bin, 3-a Y-shaped blanking device, 4-a distributor, 5-a first extruder, 6-a second extruder, 7-a first blanking screw, 8-a controller, 9-a weightless scale, 10-a variable frequency speed regulator, 11-a material level upper limit mark, 12-a material level lower limit mark, 13-a first feeding bin, 14-a second feeding bin, 15-a driving motor, 16-a feeding valve and 17-a second blanking screw.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example one
As shown in fig. 1, a stable unloader of lithium electricity trade high accuracy, it includes two at least buffer memory feed bins, and the feed bin is all connected through the conveying pipeline to the feed opening of every buffer memory feed bin to all install feed valve 16 on every conveying pipeline, weightless balance 9 all is equipped with in the bottom in feed bin, weightless balance 9 inside is equipped with weightless balance sensor, the feed opening below in feed bin is equipped with adjustable speed unloading mechanism, adjustable speed unloading mechanism carries out speed control through controller 8, 16 and weightless balance sensor are connected simultaneously to controller 8. The adjustable-speed discharging mechanism comprises a discharging screw and an adjustable variable-frequency driver, one end of the discharging screw serves as a discharging end, the other end of the discharging screw is connected with the adjustable variable-frequency driver, the adjustable variable-frequency driver comprises a driving motor 15 and a variable-frequency speed regulator 10, the variable-frequency speed regulator 10 is connected with a controller 8, and the controller 8 controls the rotating speed of a driving motor 19 through the variable-frequency speed regulator 10.
In this embodiment, the buffer memory feed bin is preferably provided with two, and is first buffer memory feed bin 1 and second buffer memory feed bin 2 respectively, the below of first buffer memory feed bin 1 is provided with first feeding storehouse 13, the below of second buffer memory feed bin 2 is provided with second feeding storehouse 14, the below of first feeding storehouse 13 is provided with first unloading screw 7, the below of second feeding storehouse 14 is provided with second unloading screw 17. The discharging ends of the first discharging screw 7 and the second discharging screw 17 are arranged oppositely, and a Y-shaped discharging device 3 is arranged below the discharging ends of the two discharging screws; the discharge port of the Y-shaped discharging device 3 is connected with the distributor 4, the distributing ports of the distributor 4 are respectively connected with the feeding ports of the two extruders, and materials pass through the Y-shaped discharging device 3 and enter different extruders through the distributor 4.
In this embodiment, be equipped with material level upper limit mark 11 and material level lower limit mark 12 in the feeding storehouse for artificial supplementary monitoring, the surplus of understanding material can be directly perceived.
In this embodiment, the weightlessness scale sensor is a weight sensor, the weight sensor is connected to the controller 8 and transmits a detected weight signal to the controller 8, and the controller 8 controls the opening and closing of the feed valve 16 according to the received weight signal, wherein the controller is a PLC controller.
In conclusion, the working principle of the device is as follows: different raw materials are filled in the first buffer storage bin 1 and the second buffer storage bin 2, the raw materials rapidly enter the lower feeding bin through the feeding valve 16, the weight of the raw materials with the volume above the weight can be detected by the weight loss scale 9 at the bottom of the feeding bin in real time, the weight loss scale and the discharging port are arranged in a staggered mode, normal discharging cannot be affected, the detected weight is sent to the controller 8 in the control module by the weight loss scale 9, and the controller 8 controls the discharging flow of the discharging mechanism and the opening and closing of the feeding valve 16 through the variable frequency speed regulator 10. When the material amount of the feeding bin reaches the lower limit 12 of the material level, the weightlessness scale 9 transmits a low material level weight signal to the controller 8 through the weightlessness scale sensor, the controller 8 controls the valve of the rapid feeding valve 16 to be opened, when the material amount of the feeding bin reaches the upper limit 11 of the material level, the weightlessness scale 9 transmits a high material level weight signal to the controller 8 through the weightlessness scale sensor, and the controller 8 controls the valve of the rapid feeding valve 16 to be closed. In addition, the whole blanking system is controlled by a chain program, when the material quantity of the extruder needs to be increased, a signal is transmitted to the variable-frequency speed regulator 10 through the controller 8, the rotating speed of the blanking screw 7 is increased, and the feeding quantity can be increased.
Example two.
A control method of a high-precision stable blanking device in the lithium battery industry comprises the following steps:
the method comprises the following steps: presetting working modes in a control module, wherein each working mode corresponds to different materials for mixing, and each working mode also corresponds to different feeding speeds, upper limit weight of the materials and lower limit weight of the materials according to different materials;
step two: selecting a working mode suitable for the material according to the material in the cache bin, and adjusting the feeding speed to the speed in the mode by the controller through the variable-frequency speed regulator after the mode is selected;
step three: in the feeding process, a weightlessness scale sensor in the weightlessness scale transmits a weight signal detected by the weightlessness scale sensor to a controller of the control module in real time;
step four: when the detected weight of the materials in the feeding bin is lower than the preset lower limit weight of the materials, the controller controls the feeding valve to be opened, and at the moment, the buffer storage bin starts to feed the materials to the feeding bin;
step five: when the detected weight of the materials in the feeding bin reaches the preset upper limit weight of the materials, the controller controls the feeding valve to be closed, and at the moment, the cache bin stops feeding the materials to the feeding bin;
step six: and repeating the fourth step and the fifth step under the condition that the feeding speed is constant.
In the control method, closed-loop control is realized through a control program, continuous and stable uninterrupted blanking is realized, batch feeding metering precision is improved, and interference of external factors (such as mechanical vibration and the like) is avoided.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution methods fall within the scope of the present invention.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (10)
1. The utility model provides a stable unloader of lithium electricity trade high accuracy, a serial communication port, including two at least buffer memory feed bins, the feed bin is all connected through the conveying pipeline to the feed valve all installs on every conveying pipeline, all be equipped with weightless balance in the bottom in feed bin, the inside weightless balance sensor that is equipped with of weightless balance, the feed opening below in feed bin is equipped with adjustable speed unloading mechanism, adjustable speed unloading mechanism carries out speed control through the controller, feed valve and weightless balance sensor are connected simultaneously to the controller.
2. The high-precision stable discharging device in the lithium battery industry according to claim 1, wherein the speed-adjustable discharging mechanism comprises a discharging screw and an adjustable variable frequency driver, one end of the discharging screw serves as a discharging end, and the other end of the discharging screw is connected with the adjustable variable frequency driver.
3. The high-precision stable blanking device in the lithium ion battery industry according to claim 2, wherein the adjustable variable frequency driver comprises a driving motor and a variable frequency speed regulator, the variable frequency speed regulator is connected with a controller, and the controller controls the rotating speed of the driving motor through the variable frequency speed regulator.
4. The high-precision stable discharging device in the lithium battery industry according to claim 1, wherein the number of the buffer bins is two, and the two buffer bins are a first buffer bin and a second buffer bin respectively, a first feeding bin is arranged below the first buffer bin, a second feeding bin is arranged below the second buffer bin, a first discharging screw rod is arranged below the first feeding bin, and a second discharging screw rod is arranged below the second feeding bin.
5. The high-precision stable blanking device for the lithium battery industry according to claim 4, wherein the discharge ends of the first blanking screw and the second blanking screw are arranged oppositely, and a Y-shaped blanking device is arranged below the discharge ends of the two blanking screws.
6. The blanking device with high precision and stability in the lithium ion battery industry according to claim 5, wherein a discharge port of the Y-shaped blanking device is connected with a distributor, a distribution port of the distributor is connected with a feeding port of the extruder, and the distributor is used for distributing materials to different extruders.
7. The high-precision stable blanking device in the lithium battery industry according to claim 1, wherein a material level upper limit mark and a material level lower limit mark are arranged in the feeding bin.
8. The high-precision stable blanking device in the lithium battery industry according to claim 1, wherein the weightlessness scale sensor is a weight sensor, the weight sensor is connected with the controller and transmits a detected weight signal to the controller, and the controller controls the opening and closing of the feeding valve according to the received weight signal.
9. The high-precision stable blanking device in the lithium battery industry according to claim 1, wherein the controller is a PLC controller.
10. The control method of the high-precision stable blanking device in the lithium battery industry according to any one of claims 1 to 8 is characterized by comprising the following steps:
the method comprises the following steps: presetting working modes in a control module, wherein each working mode corresponds to different materials for mixing, and each working mode also corresponds to different feeding speeds, upper limit weight of the materials and lower limit weight of the materials according to different materials;
step two: selecting a working mode suitable for the material according to the material in the cache bin, and adjusting the feeding speed to the speed in the mode by the controller through the variable-frequency speed regulator after the mode is selected;
step three: in the feeding process, a weightlessness scale sensor in the weightlessness scale transmits a weight signal detected by the weightlessness scale sensor to a controller of the control module in real time;
step four: when the detected weight of the materials in the feeding bin is lower than the preset lower limit weight of the materials, the controller controls the feeding valve to be opened, and at the moment, the buffer storage bin starts to feed the materials to the feeding bin;
step five: when the detected weight of the materials in the feeding bin reaches the preset upper limit weight of the materials, the controller controls the feeding valve to be closed, and at the moment, the cache bin stops feeding the materials to the feeding bin;
step six: and repeating the fourth step and the fifth step under the condition that the feeding speed is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110479986.5A CN113247595A (en) | 2021-04-30 | 2021-04-30 | High-precision stable discharging device in lithium battery industry and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110479986.5A CN113247595A (en) | 2021-04-30 | 2021-04-30 | High-precision stable discharging device in lithium battery industry and control method thereof |
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| CN113247595A true CN113247595A (en) | 2021-08-13 |
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| CN202110479986.5A Pending CN113247595A (en) | 2021-04-30 | 2021-04-30 | High-precision stable discharging device in lithium battery industry and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694803A (en) * | 2021-08-24 | 2021-11-26 | 中材锂膜有限公司 | Powder material flowing system of lithium ion battery diaphragm |
| CN113776631A (en) * | 2021-08-27 | 2021-12-10 | 安徽黑磁智能科技有限公司 | Linear prediction type powder material metering scale weighing device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5711904A (en) * | 1995-09-05 | 1998-01-27 | The Goodyear Tire & Rubber Company | Continuous mixing of silica loaded elastomeric compounds |
| CN201932699U (en) * | 2010-12-15 | 2011-08-17 | 鞍钢股份有限公司 | Accurate dosing unit |
| CN104129053A (en) * | 2014-07-16 | 2014-11-05 | 铜陵晶能电子股份有限公司 | Feeding system for lithium battery diaphragm production line |
-
2021
- 2021-04-30 CN CN202110479986.5A patent/CN113247595A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5711904A (en) * | 1995-09-05 | 1998-01-27 | The Goodyear Tire & Rubber Company | Continuous mixing of silica loaded elastomeric compounds |
| CN201932699U (en) * | 2010-12-15 | 2011-08-17 | 鞍钢股份有限公司 | Accurate dosing unit |
| CN104129053A (en) * | 2014-07-16 | 2014-11-05 | 铜陵晶能电子股份有限公司 | Feeding system for lithium battery diaphragm production line |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694803A (en) * | 2021-08-24 | 2021-11-26 | 中材锂膜有限公司 | Powder material flowing system of lithium ion battery diaphragm |
| CN113694803B (en) * | 2021-08-24 | 2023-08-15 | 中材锂膜有限公司 | Powder material flowing system of lithium ion battery diaphragm |
| CN113776631A (en) * | 2021-08-27 | 2021-12-10 | 安徽黑磁智能科技有限公司 | Linear prediction type powder material metering scale weighing device and method |
| CN113776631B (en) * | 2021-08-27 | 2023-12-01 | 安徽黑磁智能科技有限公司 | Weighing device and method of linear prediction type powder metering scale |
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Application publication date: 20210813 |