Automatic additive feeding system

Abstract

The utility model discloses an automatic additive feeding system which comprises a quantitative feeding device, a feeding device, a feeding device and a control device, the quantitative feeding device comprises a plurality of additive bins which are arranged in parallel, weight reduction meters are arranged on the additive bins, and a metering conveying device is correspondingly arranged at a discharge port of each additive bin; a material inlet of the buffer storage bin is communicated with the material outlet end of each metering conveying device; wherein a re-weighing device is further arranged on the temporary storage bin; and the control system is in signal connection with the quantitative feeding device, the metering conveying device and the temporary storage bin. According to the automatic additive feeding system provided by the utility model, the re-weighing device is arranged on the buffer storage bin, so that the weight of the additive can be re-checked before the additive enters the next process, the metering precision of the additive is improved, and the weight of the additive is ensured to be the actually required weight.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding devices, and more specifically to an automatic additive feeding system. Background Art

[0002] In the actual production process, the automatic additive feeding system has become a technical problem. In this process, the additives need to be accurately measured, and at the same time, it must be ensured that each can of material is added only once to ensure that product indicators are guaranteed.

[0003] The existing automatic additive feeding system realizes accurate metering of additives by setting up a quantitative feeding device. However, additives are inevitably adhered or remain in the equipment during the transportation process, resulting in the actual amount of additives entering the tank material not matching the actual demand, thus affecting product quality.

[0004] Therefore, how to provide an automatic additive feeding system that can ensure that the amount of additives entering the tank material meets the actual demand has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The utility model aims to provide an automatic additive feeding system which can improve the additive metering accuracy.

[0006] The utility model provides an automatic additive feeding system, comprising:

[0007] The quantitative feeding device comprises a plurality of additive silos arranged in parallel, each of which is provided with a weight loss meter, and each of which is provided with a metering conveying device at its outlet;

[0008] The buffer silo has a feed inlet connected to the discharge end of each metering and conveying device; wherein the buffer silo is also provided with a weighing device;

[0009] The control system is respectively connected with the weight loss meter, the metering and conveying device and the re-weighing device by signals.

[0010] Optionally, it also includes a material compacting device, which includes a storage barrel, a side wall of which is provided with a feed port that can be connected one-to-one with the discharge end of the metering and conveying device, and a bottom of the storage barrel is provided with a discharge port that can be connected to the feed port of the cache silo.

[0011] Optionally, the feed openings on the storage barrel are arranged in a staggered manner.

[0012] Optionally, the storage barrel has a material compacting cavity and relatively arranged feed end and discharge end, a compacting cylinder assembly is provided on the top of the material compacting cavity, a discharge port is opened at the discharge end, and a second electrically controlled valve electrically connected to the control system is provided at the discharge port; the compacting cylinder assembly can reciprocate along the axial direction of the storage barrel to compact the material in the material compacting cavity.

[0013] Optionally, the weight loss meter and the weighing device are both selected from weighing sensors;

[0014] And / or, the metering and conveying device is selected from a high-precision feeding screw.

[0015] Optionally, a first electrically controlled valve is provided at the outlet of the additive silo;

[0016] The first electrically-controlled valve is electrically connected to the control system.

[0017] Optionally, the discharge port of the buffer silo is connected to an electromagnetic conveying device, and the electromagnetic conveying device is connected to a subsequent mixing device.

[0018] Optionally, a third electrically-controlled valve is provided at the discharge port at the bottom of the buffer silo, and the third electrically-controlled valve is electrically connected to the control system.

[0019] Optionally, the automatic additive feeding system further comprises an alarm device, and the alarm device is electrically connected to the control system.

[0020] According to the technical content disclosed in the utility model, the following beneficial effects are achieved:

[0021] The automatic additive feeding system provided by the utility model includes a quantitative feeding device, a buffer silo and a reweighing device connected in sequence; and a control system connected to the quantitative feeding device and the reweighing device respectively. If the weighing result of the reweighing device does not meet the preset requirements, a feedback signal is sent to the control system, and the control system can control the automatic additive feeding system to stop and alarm, so that the production operator can intervene in time. Therefore, the coordinated setting of the reweighing device and the control system can make the weight of the additive recheck before entering the next process, ensuring that the weight of the additive entering the next process is the actual required weight.

[0022] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0024] Figure 1 This is a structural diagram of the automatic additive feeding system of the utility model.

[0025] Figure 2 This is a control system diagram of the utility model.

[0026] Explanation of the accompanying drawings: 1. First weighing sensor; 2. Additive silo; 3. First electrically-controlled valve; 4. Discharge pipe; 5. Feeding screw; 6. Motor; 7. Compacting cylinder assembly; 8. Material compacting chamber; 9. Second electrically-controlled valve; 10. Buffer silo; 11. Second weighing sensor; 12. Third electrically-controlled valve; 13. Electromagnetic conveyor. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0028] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0029] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0030] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0031] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0032] See also Figure 1 The present embodiment provides an automatic additive feeding system for automatically adding lithium battery positive electrode material additives, the system comprising: a quantitative feeding device, a material compacting device, a reweighing device and an electromagnetic conveying device connected in sequence, the electromagnetic conveying device being connected to a subsequent mixing device; and a control system electrically connected to the quantitative feeding device, the material compacting device, the reweighing device and the electromagnetic conveying device respectively; the control system can control the quantitative feeding device to quantitatively feed the material compacting device, and after the material is compacted in the material compacting device, it enters the buffer silo 10 and is weighed by the reweighing device. When the weighing result of the reweighing device meets the preset conditions, the control system can control the electromagnetic conveying device to transport the compacted material to the next process.

[0033] The quantitative feeding device includes two additive silos 2 with a volume of 50L arranged in parallel. A weight loss meter is provided on the additive silo 2 to detect the weight reduction value of the material in the additive silo 2 in real time. The weight loss meter is a first weighing sensor 1 in this embodiment; wherein, three supporting points are evenly arranged on the circumference of the additive silo 2, and each supporting point is provided with a first weighing sensor 1 electrically connected to the control system. A metering and conveying device is correspondingly arranged at the discharge port of each additive silo 2. The metering and conveying device is used to realize the quantitative discharge of the additive silo 2. The specific configuration is that the discharge port at the bottom of the additive silo 2 is connected to the feed pipe 4 and the feeding screw 5 in sequence; the feed pipe 4 is vertically arranged, and its feed port is connected to the discharge port at the bottom of the additive silo 2, and its discharge port is connected to the feeding screw 5, and the feed pipe 4 and the feeding screw 5 are arranged perpendicular to each other. In this embodiment, the feeding screw 5 is a high-precision feeding screw, and the feeding is driven by a motor 6. The discharge pipe 4 is provided with a first electrically controlled valve 3, that is, the first electrically controlled valve 3 is arranged on the discharge port at the bottom of the additive silo 2, and the first electrically controlled valve 3, the high-precision feeding screw, and the motor 6 are respectively connected to the control system by electrical signals.

[0034] The material compacting device includes a storage barrel having a material compacting cavity 8, a feed port connected to the material compacting cavity 8 is provided on the side wall of the storage barrel, and the discharge end of the feeding screw 5 is connected to the above feed port to quantitatively deliver additives into the material compacting cavity 8. It should be noted that in order to achieve mixed addition or alternating addition of two additives, in this embodiment, two feed ports are staggered on the side wall of the storage barrel, one high and one low, each feed port is connected to a quantitative feeding device, and the two quantitative feeding devices are in parallel with each other; of course, it can be understood that in order to meet the addition requirements of multiple additives, more than two feed ports can also be set on the side wall of the material compacting cavity 8, and multiple feed ports are staggered to prevent material blockage. A compacting cylinder assembly 7 is provided at the top of the material compacting cavity 8, and a second electrically controlled valve 9 is provided at the discharge port at the bottom of the material compacting cavity 8, and the second electrically controlled valve 9 is electrically connected to the control system; the compacting cylinder assembly 7 can reciprocate in the material compacting cavity 8 along the axial direction of the storage barrel to compact the material in the material compacting cavity. After the additive is delivered to the material compacting cavity 8 by the quantitative feeding device, the compacting cylinder assembly 7 compacts the additive in the material compacting cavity 8, and then the control system controls the second electrically controlled valve 9 to open, so that the compacted additive enters the buffer silo 10 for weight verification by the weighing device.

[0035] The re-weighing device includes a second weighing sensor 11 arranged on the buffer silo 10. The second weighing sensor 11 is electrically connected to the control system. Its arrangement is the same as that of the first weighing sensor 1 on the additive silo 2, which will not be repeated here.

[0036] The electromagnetic conveying device is an electromagnetic conveyor 13 connected to the control system signal. A third electrically controlled valve 12 is provided between the discharge port at the bottom of the buffer silo 10 and the feed port of the electromagnetic conveyor 13, and the third electrically controlled valve 12 is electrically connected to the control system.

[0037] Working principle: The first weighing sensor 1 is used to weigh the additives in the two additive silos 2. When additives need to be added, the motor 6 is started, and the feeding screw 5 pushes the additives in the additive silo 2 into the material compacting cavity 8 for compaction (in this process, the compacting cylinder assembly 7 works intermittently, and the two feeding screws 5 add materials according to the preset addition ratio). After the additives are compacted, the control system opens the second electric control valve 9, and the compacted additives enter the buffer silo 10 for secondary weighing. When the mixing equipment meets the conditions for adding materials, the third electric control valve 12 is opened, and the electromagnetic conveying is started for adding materials.

[0038] Working process: Employees add two kinds of additives into two additive silos 2 respectively. When additives need to be added, the motor 6 starts the feeding screw 5 to start adding additives into the material compacting cavity 8. The two feeding screws 5 add according to the adding ratio, and the compacted additives enter the buffer silo 10 for secondary weighing. If the result of the secondary weighing does not meet the preset requirements, that is, the weight of the additives weighed twice is different from the actual additive demand, the control system sends an alarm signal to the alarm device, and the alarm device sounds an alarm. After the reweighing meets the standards, when the mixing equipment meets the feeding conditions, the third electrically controlled valve 12 opens, and the electromagnetic conveying starts to feed. In this embodiment, the control system is controlled by the PLC, and the weight of the material added is controlled according to the control logic; the secondary weighing function is interlocked with the PLC to prevent inaccurate weight of the additive; the system can mix and add the two materials and compact them, so as to achieve the purpose of evenly mixing the additives.

[0039] In summary, in the automatic additive feeding system provided by the present invention, the additive is stored in the additive silo 2, accurately metered by the feeding screw 5, and initially compacted into the buffer silo 10 by the compacting cylinder assembly 7. Figure 2, the PLC program automatically compares the weight of the additive silo, and finally transports the material to the mixing equipment of the next process through the electromagnetic conveyor 13. The control system records the feeding data by communicating with the DCS or MES, realizing the unmanned automatic metering function of the additive, thereby achieving the purpose of quality control. The utility model adopts a material compacting device mainly because the density of the measured additive is relatively light, and it is convenient to unload the material and meter the next process after compaction, ensuring accurate metering; compaction is adopted because compaction has no effect on the mixing. The buffer silo 10 for repeated weighing is added because the weight of the additive directly transported to the mixing equipment by the feeding screw 5 is not accurate enough, resulting in unqualified mixed materials. Re-weighing can be used to determine whether the added additives are correct. If it is inaccurate, the equipment alarm will stop, and the production operator will intervene to confirm. The electromagnetic conveyor 13 is mainly used to quickly feed the compacted material. If a spiral method is used here, material residue will remain on the inner wall of the spiral, thereby affecting the reliability of the material quality index.

[0040] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An automatic additive feeding system, characterized in that: include: The quantitative feeding device comprises a plurality of additive silos arranged in parallel, each of which is provided with a weight loss meter, and each of which is provided with a metering and conveying device at its outlet; A buffer silo, the feed port of which is connected to the discharge end of each of the metering and conveying devices; wherein the buffer silo is also provided with a weighing device; The control system is respectively connected with the weight loss meter, the metering and conveying device and the reweighing device by signals.

2. The automatic additive feeding system according to claim 1, characterized in that: It also includes a material compacting device, which includes a storage barrel. A feed port that can be connected to the discharge end of the metering and conveying device in a one-to-one correspondence is opened on the side wall of the storage barrel, and a discharge port that can be connected to the feed port of the cache silo is opened at the bottom of the storage barrel.

3. The automatic additive feeding system according to claim 2, characterized in that: The feed openings on the storage barrel are arranged in a staggered manner.

4. The automatic additive feeding system according to claim 2 or 3, characterized in that: The storage barrel has a material compacting cavity and a feed end and a discharge end arranged opposite to each other. A compacting cylinder assembly is provided on the top of the material compacting cavity. The discharge port is opened at the discharge end, and a second electrically controlled valve electrically connected to the control system is provided at the discharge port. The compacting cylinder assembly can reciprocate along the axial direction of the storage barrel to compact the material in the material compacting cavity.

5. The automatic additive feeding system according to any one of claims 1 to 3, characterized in that: The weight loss meter and the weighing device are both selected from weighing sensors; And / or, the metering and conveying device is selected from a high-precision feeding screw.

6. The automatic additive feeding system according to any one of claims 1 to 3, characterized in that: A first electrically controlled valve is provided at the outlet of the additive silo; The first electrically-controlled valve is electrically connected to the control system.

7. The automatic additive feeding system according to any one of claims 1 to 3, characterized in that: The discharge port of the buffer silo is connected to an electromagnetic conveying device, and the electromagnetic conveying device is connected to a subsequent mixing device.

8. The automatic additive feeding system according to claim 7, characterized in that: A third electrically-controlled valve is provided at the discharge port at the bottom of the buffer silo, and the third electrically-controlled valve is electrically connected to the control system.

9. The automatic additive feeding system according to any one of claims 1 to 3, characterized in that: The automatic additive feeding system also includes an alarm device, which is electrically connected to the control system.

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