Intelligent batching device for lithium carbonate production

Abstract

The utility model provides an intelligent batching device for lithium carbonate production, which comprises a conveying belt, the front end of the conveying belt is connected with a programmable integrated controller PLC, and a lepidolite batching assembly, a sodium sulfate batching assembly, a first auxiliary material assembly, a second auxiliary material assembly and an auxiliary material standby batching assembly are arranged above the conveying belt. In the using process, the metering bin weighing device detects the weight and controls materials to be added into the metering bin, after the set weight is reached, the discharging valve of the metering bin is closed, the discharging valve of the metering bin is opened, the materials flow to the main conveying belt and are conveyed to the mixing bin to be mixed, and the automatic hydraulic lifting weight calibration device calibrates the metering bin regularly. The metering accuracy is guaranteed, the matching precision can be improved, and the product quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mixing and batching equipment technical field especially, it relates to a kind of intelligent batching device for lithium carbonate production. BACKGROUND

[0002] With the rise of new energy use, especially the market demand of new energy vehicles powered by lithium battery increases greatly. Lithium carbonate, as the positive electrode raw material of power battery, has been in high demand in recent years. With the development of technology, various production enterprises are trying different new processes and new technologies to improve product quality, production efficiency and energy saving. The mixing process section of the front end of lithium carbonate production needs to mix several different raw materials according to the ratio. Currently, the industry uses a relatively extensive batching process, and generally uses a dynamic continuous feeding batching mode. Some use a metering belt scale mode, and some use a loss-in-weight feeding mode. The production methods used are relatively traditional, and the following problems generally exist:

[0003] Large ratio error: dynamic measurement has the defect of low measurement accuracy, and under professional use and maintenance, the batching accuracy can only meet 1% error. The current situation is that the batching error is generally greater than 1%, even some are greater than 5%, which seriously affects product quality and causes waste of raw materials.

[0004] Low degree of automation: among several formulas, lithium mica accounts for more than 60%. In continuous production, forklifts need to frequently replenish the storage bin, and equipment failure and blockage of the discharge port also often occur, which often requires human intervention, wasting manpower and resources. It is seriously dependent on the experience of on-site workers rather than relying on system equipment.

[0005] Poor formula confidentiality: formula is the core secret of the company, and the batching of each material is not linked, which needs to be set separately without permission management.

[0006] Poor guarantee of accurate ratio: each material belongs to different feeding equipment, and once the ratio exceeds the error, it continues to run, which is easy to cause product quality problems. Because it is fed by weighing, the weighing system is not verified in time after a period of time.

[0007] In view of the above situation, a new solution is proposed: an intelligent batching system for lithium carbonate production line mixing section, which uses centralized control, formula management, system self-correction and flow regulation to solve the above problems. INVENTION CONTENTS

[0008] The utility model aims at solving the problems in the above background art and proposes an intelligent batching device for lithium carbonate production.

[0009] To achieve the above object, the utility model adopts the following technical scheme:

[0010] A kind of intelligent batching device for lithium carbonate production, including conveying belt, the front end of the conveying belt is connected with programmable centralized controller PLC, lithium mica batching assembly, sodium sulfate batching assembly, first auxiliary material assembly, second auxiliary material assembly and auxiliary material standby batching assembly are arranged above the conveying belt.

[0011] Preferably, the lithium mica batching assembly and sodium sulfate batching assembly are both composed of storage chamber, material level weighing monitor, fixed frame, variable frequency trailing material belt device, metering chamber, metering chamber weighing module, bin wall vibration device and hydraulic lifting weight corrector;

[0012] The left and right ends above the conveying belt are both fixed with storage chamber, the outer wall of the storage chamber is both fixed with material level weighing monitor, the bottom of the material level weighing monitor is both fixed with fixed frame, the middle and lower end of the fixed frame is both fixed with variable frequency trailing material belt device, the front end below the fixed frame is both fixed with metering chamber, the outer wall of the metering chamber is both fixed with metering chamber weighing module, the outer wall of the metering chamber is both fixed with bin wall vibration device, the outer wall below the metering chamber is both fixedly connected with hydraulic lifting weight corrector.

[0013] Preferably, two variable frequency trailing material belt devices are respectively arranged between the discharge port bottom of storage chamber and the feed port above metering chamber, between the discharge port bottom of metering chamber and the top of conveying belt.

[0014] Preferably, the first auxiliary material assembly, second auxiliary material assembly and auxiliary material standby batching assembly are all composed of storage bin, material level weighing monitoring device, rack, variable frequency star type unloader, metering bin, metering bin weighing module, bin wall vibrator and hydraulic lifting weight correction device;

[0015] The middle part above the conveying belt is both fixed with storage bin, the outer wall of the storage bin is both fixed with material level weighing monitoring device, the bottom of the material level weighing monitoring device is both fixed with rack, the middle part below the storage bin is both fixed with variable frequency star type unloader, the middle part below the rack is both fixed with metering bin, the outer wall of the metering bin is both fixed with metering bin weighing module, the outer wall of the metering bin is both fixed with bin wall vibrator, and the front end of the outer wall of the metering bin is both fixed with hydraulic lifting weight correction device.

[0016] Preferably, the discharge port bottom of the variable frequency star type unloader is just arranged above the middle part of the metering bin, and the middle part of the discharge port below the metering bin is just arranged above the conveying belt.

[0017] Preferably, the programmable centralized controller PLC is signal connected with the material level weighing monitor, the variable frequency material dragging belt device, the metering chamber weighing module, the bin wall vibration device, the hydraulic lifting weight corrector, the material level weighing monitoring device, the variable frequency star type unloader, the metering bin weighing module, the bin wall vibrator and the hydraulic lifting weight correction device.

[0018] The utility model discloses a plurality of dosing units combination form is controlled by programmable controller PLC, and the formula of each kind of material is inputted in PLC touch screen, and the system calculates the proportioning weight and transports the material to the rear end mixing bin, is provided with lithium mica dosing assembly, first auxiliary material assembly, second auxiliary material assembly, auxiliary material standby dosing assembly, sodium sulfate dosing assembly and conveying belt, and the metering bin weighing device detects weight and controls the material to add to the metering bin, closes the storage bin unloading valve after reaching the set weight, opens the metering bin discharge valve and turns to the conveying belt with the material flow, and the mixing bin is transported to carry out the mixing, and the automatic hydraulic lifting weight calibration device calibrates the metering bin regularly, guarantees the accuracy of measurement, can promote the proportioning precision, guarantees the product quality. ACCURACY

[0019] Figure 1 It is whole structure schematic diagram in the utility model;

[0020] Figure 2 It is lithium mica dosing assembly and sodium sulfate dosing assembly partial structure schematic diagram in the utility model;

[0021] Figure 3 It is first auxiliary material assembly, second auxiliary material assembly and auxiliary material standby dosing assembly partial structure schematic diagram in the utility model;

[0022] Figure 4 It is system architecture schematic diagram in the utility model;

[0023] Figure 5 It is system control flow chart in the utility model.

[0024] Legend:

[0025] Conveying belt 1, programmable centralized controller PLC 104, lithium mica dosing assembly 101, sodium sulfate dosing assembly 106, storage chamber 201, material level weighing monitor 202, fixed frame 203, variable frequency material dragging belt device 204, metering chamber 205, metering chamber weighing module 206, bin wall vibration device 207, hydraulic lifting weight corrector 208, first auxiliary material assembly 102, second auxiliary material assembly 103, auxiliary material standby dosing assembly 105, storage bin 301, material level weighing monitoring device 302, rack 303, variable frequency star type unloader 304, metering bin 305, metering bin weighing module 306, bin wall vibrator 307, hydraulic lifting weight correction device 308. DETAILED DESCRIPTION

[0026] Embodiment 1, refer to Figures 1-5 The application discloses an intelligent batching device for lithium carbonate production, which comprises a conveying belt 1, a programmable logic controller (PLC) 104 connected to the front end of the conveying belt 1, and lithium mica batching assemblies 101, sodium sulfate batching assemblies 106, first auxiliary material assemblies 102, second auxiliary material assemblies 103 and auxiliary material standby batching assemblies 105 arranged above the conveying belt 1.

[0027] The lithium mica batching assemblies 101 and the sodium sulfate batching assemblies 106 each comprise a storage chamber 201, a material level weighing monitor 202, a fixing frame 203, a variable-frequency material dragging belt device 204, a metering chamber 205, a metering chamber weighing module 206, a bin wall vibration device 207 and a hydraulic lifting weight corrector 208.

[0028] The left and right ends above the conveying belt 1 are each fixed with a storage chamber 201, the outer walls of the storage chambers 201 are each fixed with a material level weighing monitor 202, the bottoms of the material level weighing monitors 202 are each fixed with a fixing frame 203, the middle and lower ends of the fixing frames 203 are each fixed with a variable-frequency material dragging belt device 204, the lower front ends of the fixing frames 203 are each fixed with a metering chamber 205, the outer walls of the metering chambers 205 are each fixed with a metering chamber weighing module 206, the outer walls of the metering chambers 205 are each fixed with a bin wall vibration device 207, and the outer walls of the metering chambers 205 are each fixed with a hydraulic lifting weight corrector 208.

[0029] The two variable-frequency material dragging belt devices 204 are arranged between the bottoms of the discharge ports of the storage chambers 201 and the feeding ports above the metering chambers 205, and between the bottoms of the discharge ports of the metering chambers 205 and the top of the conveying belt 1.

[0030] The first auxiliary material assemblies 102, the second auxiliary material assemblies 103 and the auxiliary material standby batching assemblies 105 each comprise a storage bin 301, a material level weighing monitoring device 302, a rack 303, a variable-frequency star-shaped discharger 304, a metering bin 305, a metering bin weighing module 306, a bin wall vibrator 307 and a hydraulic lifting weight correction device 308.

[0031] The middle parts of the top of the conveying belt 1 are each fixed with a storage bin 301, the outer walls of the storage bins 301 are each fixed with a material level weighing monitoring device 302, the bottoms of the material level weighing monitoring devices 302 are each fixed with a rack 303, the lower middle parts of the storage bins 301 are each fixed with a variable-frequency star-shaped discharger 304, the lower middle parts of the racks 303 are each fixed with a metering bin 305, the outer walls of the metering bins 305 are each fixed with a metering bin weighing module 306, the outer walls of the metering bins 305 are each fixed with a bin wall vibrator 307, and the front ends of the outer walls of the metering bins 305 are each fixed with a hydraulic lifting weight correction device 308.

[0032] The discharge port of the variable frequency star-type discharger 304 at the bottom is arranged just above the middle of the metering bin 305, and the middle of the discharge port below the metering bin 305 is arranged just above the conveying belt 1.

[0033] In operation, the metering bin weighing module 306 and the metering chamber weighing module 206 detect the weight and control the feeding of materials to the metering bin 305 and the metering chamber 205, and after reaching the set weight, the discharge valves of the storage bin 301 and the storage chamber 201 are closed, and the discharge valves of the metering bin 305 and the metering chamber 205 are opened to switch the material flow to the conveying belt 1 to the mixing bin for mixing. The hydraulic lifting weight corrector 208 and the hydraulic lifting weight correction device 308 periodically calibrate the metering chamber 205 and the metering bin 305 to ensure the accuracy of metering, improve the proportioning accuracy, and ensure product quality.

[0034] Example 2 is different from Example 1 in that, as Figures 4-5 In this embodiment, the programmable centralized controller PLC 104 is signal-connected with the material level weighing monitor 202, the variable frequency material dragging belt device 204, the metering chamber weighing module 206, the bin wall vibration device 207, the hydraulic lifting weight corrector 208, the material level weighing monitoring device 302, the variable frequency star-type discharger 304, the metering bin weighing module 306, the bin wall vibrator 307, and the hydraulic lifting weight correction device 308.

[0035] When the batching control system is running, various material-related parameters are set by the upper touch screen, each bin is configured with a weighing module, the weight signal is fed back through the transmitter to the programmable centralized controller PLC 104, the programmable centralized controller PLC 104 realizes automatic control of the system, and the programmable centralized controller PLC 104 gives a work signal through the frequency converter according to the set related material parameters, and finally the belt conveyor and the discharger control the discharge to be closed to realize the batching of various materials. Combined with the production process requirements, the bin-type static metering batching method is adopted, which adopts a centralized control mode according to its process and characteristics, has high batching accuracy, and the upper computer is centrally controlled, which is convenient for changing the proportioning at any time. The programmable centralized controller PLC 104 is used to coordinate the working points of sequential actions, each weighing instrument can work independently or be controlled by the upper computer, some of which are not used or are faulty, which facilitates the removal, and the standby bin can be started and run at any time in case of failure. The system can be fully automatically operated or switched to manual control.

[0036] The programmable logic controller PLC 104 sets the proportioning at the control interface, enables the administrator permission to set the formula, the system enters the automatic operation mode, the discharge valves of the metering chamber 205 and the metering bin 305 are in the closed state to avoid material flow, the discharge valves of the storage chamber 201 and the storage bin 301 are in the high-speed feeding state, the material is fed to the metering chamber 205 and the metering bin 305 according to 90% of the set formula, when the value approaches, the feeding speed is automatically reduced to the medium-speed feeding, when the formula reaches 98%, the feeding speed is automatically adjusted to the low-speed to avoid the over-proportioning, after the preset value is reached, the feeding valves of the metering chamber 205 and the metering bin 305 are closed, the feeding is stopped, the discharge valves of the metering chamber 205 and the metering bin 305 are opened, the material in the metering chamber 205 and the metering bin 305 is discharged and flows to the next link to be mixed in the mixing bin, the system automatically judges whether the material discharge is normal, if the material is blocked, the vibration device is opened to help the smooth discharge, after the material in the bin is discharged, the discharge valve is closed, the system sends the proportioning completion signal to the central control system, the batch proportioning is completed, and the next batch is prepared to be entered.

[0037] The above is only the preferred embodiment of the present application, it should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, these should also be considered as the protection scope of the present application, these will not affect the effect and practicality of the present application.

Claims

1. An intelligent batching device for lithium carbonate production, comprising a conveyor belt (1), characterized in that, The front end of the conveyor belt (1) is connected to a programmable central controller PLC (104), and above the conveyor belt (1) are arranged a lithium mica batching component (101), a sodium sulfate batching component (106), a first auxiliary material component (102), a second auxiliary material component (103), and an auxiliary material spare batching component (105).

2. The intelligent batching device for lithium carbonate production according to claim 1, characterized in that, The lithium mica batching assembly (101) and sodium sulfate batching assembly (106) are both composed of a storage chamber (201), a material level weighing monitor (202), a fixed frame (203), a frequency conversion material conveyor belt device (204), a metering chamber (205), a metering chamber weighing module (206), a silo wall vibration device (207), and a hydraulic lifting weight calibrator (208). Storage chambers (201) are fixed at the left and right ends above the conveyor belt (1). Material level weighing monitors (202) are fixed on the outer walls of the storage chambers (201). Fixing frames (203) are fixed at the bottom of the material level weighing monitors (202). Variable frequency material conveyor belt devices (204) are fixed at the middle and lower ends of the fixing frames (203). Metering chambers (205) are fixed below the front end of the fixing frames (203). Metering chamber weighing modules (206) are fixed on the outer walls of the metering chambers (205). Bin wall vibration devices (207) are fixed on the outer walls of the metering chambers (205). Hydraulic lifting weight calibrators (208) are fixedly connected to the lower part of the outer walls of the metering chambers (205).

3. The intelligent batching device for lithium carbonate production according to claim 2, characterized in that, The two variable frequency material conveyor belt devices (204) are respectively located between the bottom of the discharge port of the storage chamber (201) and the inlet above the metering chamber (205), and between the discharge port at the bottom of the metering chamber (205) and the top of the conveyor belt (1).

4. The intelligent batching device for lithium carbonate production according to claim 1, characterized in that, The first auxiliary material assembly (102), the second auxiliary material assembly (103), and the auxiliary material spare batching assembly (105) are all composed of a storage silo (301), a material level weighing monitoring device (302), a frame (303), a variable frequency star-shaped unloader (304), a metering silo (305), a metering silo weighing module (306), a silo wall vibrator (307), and a hydraulic lifting weight calibration device (308); A storage bin (301) is fixed at the upper center of each conveyor belt (1). A material level weighing monitoring device (302) is fixed on the outer wall of each storage bin (301). A frame (303) is fixed at the bottom of each material level weighing monitoring device (302). A frequency conversion star-shaped unloader (304) is fixed at the lower center of each storage bin (301). A metering bin (305) is fixed at the lower center of each frame (303). A metering bin weighing module (306) is fixed on the outer wall of each metering bin (305). A bin wall vibrator (307) is fixed on the outer wall of each metering bin (305). A hydraulic lifting weight calibration device (308) is fixed at the front end of the outer wall of each metering bin (305).

5. The intelligent batching device for lithium carbonate production according to claim 4, characterized in that, The discharge port at the bottom of the variable frequency star-shaped unloader (304) is located above the middle of the metering bin (305), and the middle of the discharge port below the metering bin (305) is located above the conveyor belt (1).

6. The intelligent batching device for lithium carbonate production according to claim 2 or 3, characterized in that, The programmable central controller PLC (104) is connected to the material level weighing monitor (202), the frequency conversion material conveyor belt device (204), the metering chamber weighing module (206), the silo wall vibration device (207), the hydraulic lifting weight calibrator (208), the material level weighing monitoring device (302), the frequency conversion star-shaped unloader (304), the metering silo weighing module (306), the silo wall vibrator (307), and the hydraulic lifting weight calibrator (308) via signal connection.

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