Vacuum conveying and metering device for bulk materials of waste lithium batteries

Abstract

The utility model discloses a vacuum conveying and metering device for bulk materials of waste lithium batteries, which relates to the technical field of waste lithium battery recovery and comprises a metering bin, a feeding bin arranged at the top of the metering bin and hermetically connected with the metering bin, a weighing component arranged between the metering bin and the feeding bin, a feeding pipe penetrating through the feeding bin, and a discharging pipe penetrating through the feeding bin. The pulse feeding assembly is arranged between the feeding pipe and the raw material pipeline, the vacuum assembly is arranged at the top of the feeding bin, the discharging control piece is arranged at the bottom of the measuring bin, and the discharging pipe is arranged at the bottom of the discharging control piece. According to the vacuum conveying and metering device for the bulk materials of the waste lithium batteries, vacuum conveying and accurate metering can be carried out on powder or small-particle bulk materials generated in the disassembling and recycling process of the waste lithium batteries, so that efficient and environment-friendly material collection and packaging are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste lithium battery recycling technical field, concretely is a kind of waste lithium battery bulk material vacuum conveying metering device. BACKGROUND

[0002] In the waste lithium battery disassembly recycling process, most of the final product exists in the form of bulk material of powder or small particles. Due to the characteristics of the processing technology, these materials will be produced at each link of the production line, thereby forming multiple finished product collection points.

[0003] At present, there are mainly two ways to handle these bulk materials in the industry: one is to directly access ton bag collection bags at each output point for collection, packaging and transportation. However, when replacing the ton bag, dust is easily leaked, causing environmental pollution, which is not conducive to environmental production. At the same time, the weights of each point are different, and the weight of each ton bag product cannot be accurately grasped. Manual weighing and labeling are required in the later stage, which will bring difficulties to the information management of the later storage management and material link.

[0004] The second is to uniformly collect finished product materials in some highly automated industrial sites and then package them quantitatively. However, quantitative packaging requires professional ton bag packaging equipment. However, these devices require a large space, which not only prolongs the length of the entire production line, but also increases the probability of failure and production costs. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a kind of waste lithium battery bulk material vacuum conveying metering device, the waste lithium battery bulk material vacuum conveying metering device can carry out vacuum conveying and accurate metering to the bulk material of powder or small particle form generated in the waste lithium battery disassembly recycling process, to realize the efficient, environmental protection material collection and packaging.

[0006] The above optimization structure of the utility model is realized by the following technical solutions: a kind of waste lithium battery bulk material vacuum conveying metering device, including metering bin;

[0007] Feeding bin, the feeding bin is located at the top of the metering bin and is sealingly connected with the metering bin;

[0008] Weighing assembly, the weighing assembly is arranged between the metering bin and the feeding bin;

[0009] Feeding pipe, the feeding pipe penetrates the feeding bin;

[0010] Pulse feeding assembly, the pulse feeding assembly is arranged between the feeding pipe and the raw material pipeline;

[0011] Vacuum assembly, the vacuum assembly is arranged at the top of the feeding bin;

[0012] A discharging control member is arranged at the bottom of the metering bin;

[0013] A discharging pipe is arranged at the bottom of the discharging control member.

[0014] In some embodiments, the vacuum assembly comprises a tee pipe arranged at the top of the feeding bin and connected with a vacuum pump;

[0015] A vacuum valve is connected with the tee pipe at one end and connected with the atmosphere at the other end;

[0016] A communication partition is arranged in the feeding bin and above the feeding pipe;

[0017] A vacuum chamber is arranged between the communication partition and the top of the feeding bin.

[0018] In some embodiments, the communication partition comprises a partition plate arranged in the feeding bin and above the feeding pipe, and a plurality of communication holes are arranged on the partition plate;

[0019] A filter core is coaxially arranged with the communication holes and fixedly arranged at the bottom of the partition plate.

[0020] In some embodiments, a back flushing assembly is further included, which comprises a back flushing electromagnetic valve in communication with the vacuum chamber;

[0021] An air storage chamber is arranged on the outer wall of the feeding bin and connected with the back flushing electromagnetic valve.

[0022] In some embodiments, the pulse feeding assembly comprises a feeding shell;

[0023] A feeding pipe is arranged at one side of the feeding shell and connected with a raw material pipeline;

[0024] A discharging pipe is arranged at the other side of the feeding shell and connected with the feeding pipe;

[0025] A pulse control member is arranged in the feeding shell and between the feeding pipe and the discharging pipe.

[0026] In some embodiments, the pulse control member comprises a plug which can block the feeding pipe arranged at one side of the feeding shell;

[0027] An execution cylinder is arranged at the side of the feeding shell close to the discharging pipe, and the output shaft of the execution cylinder extends into the feeding shell and is fixedly connected with the plug coaxially;

[0028] A solenoid valve is connected with the delivery pipe between the execution cylinder and the external pneumatic device.

[0029] In some embodiments, the metering bin includes a vibrator disposed on an outer wall of the metering bin.

[0030] In summary, the utility model has the following beneficial effects:

[0031] The waste lithium battery bulk material vacuum conveying and metering device can vacuum convey and accurately meter the bulk material in the form of powder or small particles generated in the waste lithium battery disassembly and recycling process, ensure the accuracy of the material weight, facilitate subsequent storage and informatization management, and simultaneously does not need to additionally equip storage devices and professional quantitative packaging equipment, can shorten the production line length, reduce the equipment floor area, save energy consumption, reduce fixed asset investment, thereby reduce the production cost, and can block the connection between the metering bin and the discharging pipe when replacing the packaging bag, thereby avoid dust leakage, and realize efficient and environmentally-friendly material collection and packaging. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structural schematic view of the utility model;

[0033] Figure 2 It is the utility model Figure 1 It is an enlarged view of A in the utility model;

[0034] Figure 3 It is a structural schematic view of the pulse feeding assembly of the utility model.

[0035] In the figure: 1, metering bin; 11, vibrator; 2, feeding bin; 3, weighing assembly; 4, feeding pipe; 5, pulse feeding assembly; 51, feeding shell; 52, feeding pipe; 53, discharging pipe; 54, plug; 55, execution cylinder; 56, solenoid valve; 6, vacuum assembly; 61, tee joint; 62, vacuum valve; 63, communication partition; 64, vacuum chamber; 7, discharging control member; 8, discharging pipe; 9, back flushing assembly; 91, back flushing solenoid valve; 92, gas storage chamber. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0037] REFERENCE Figures 1-3 A kind of waste lithium battery bulk material vacuum conveying metering device, including metering bin 1, feeding bin 2, weighing assembly 3, feeding pipe 4, pulse feeding component 5, vacuum component 6, blanking control piece 7, blanking pipe 8, metering bin 1 can store material, facilitate subsequent material weighing, metering bin 1 can be hopper, facilitate the gathering of material at the bottom of metering bin 1, feeding bin 2 is located at the top of metering bin 1, and is sealedly connected with metering bin 1, weighing assembly 3 is located between metering bin 1 and feeding bin 2, can accurately measure the weight of material in metering bin 1, this is prior art, here no longer repeat;Feeding pipe 4 penetrates feeding bin 2, and it is the passage that material enters feeding bin 2, pulse feeding component 5 is located between feeding pipe 4 and raw material pipeline, can control the material feeding of entering feeding pipe 4, vacuum component 6 is located at the top of feeding bin 2, can provide vacuum environment, to realize the vacuum conveying of material, blanking control piece 7 is located at the bottom of metering bin 1, controls the blanking of material, blanking pipe 8 is located at the bottom of blanking control piece 7, for discharging material, can directly conclude ton bag packaging bag and pack.

[0038] In some embodiments, vacuum component 6 includes tee 61, vacuum valve 62, communication separator 63, vacuum chamber 64, tee 61 is located at the top of feeding bin 2, and is connected with vacuum pump, one end of vacuum valve 62 is connected with tee 61, the other end is connected with atmosphere, tee 61 is connected with feeding bin 2 by vacuum pump, and the on-off of tee 61 and atmosphere is controlled by vacuum valve 62, to realize the switching of vacuum state and normal pressure state of feeding bin 2, communication separator 63 is located in feeding bin 2, and is located above feeding pipe 4, vacuum chamber 64 is located between communication separator 63 and the top of feeding bin 2.

[0039] In some embodiments, communication separator 63 includes partition plate, filter element, partition plate is located in feeding bin 2, and is located above feeding pipe 4, a plurality of communication holes are formed in partition plate, filter element is coaxially arranged with communication hole, and is fixedly arranged at the bottom of partition plate.Partition plate realizes the communication of upper and lower spaces by being provided with a plurality of communication holes, filter element is coaxially fixed at the bottom of partition plate, for filtering material, so that material remains in metering bin 1, while not affecting the flow of gas between metering bin 1 and vacuum chamber 64.

[0040] In some embodiments, it further includes backflushing component 9, backflushing component 9 includes backflushing electromagnetic valve 91, gas storage chamber 92, backflushing electromagnetic valve 91 is communicated with vacuum chamber 64, gas storage chamber 92 is arranged on the outer wall of feeding bin 2, and is connected with backflushing electromagnetic valve 91, when needed, compressed air in gas storage chamber 92 is blown into feeding bin 2 by the control of backflushing electromagnetic valve 91, to clean filter element, and the material adsorbed on filter element is blown off to metering bin 1, to improve the accuracy of conveying material.

[0041] In some embodiments, referenceFigures 2-3 The pulse feeding assembly 5 comprises a feeding shell 51, a feeding pipe 52, a discharge pipe 53 and a pulse control member. The feeding shell 51 is a shell of the pulse feeding assembly 5, which can be a hollow cylinder. The feeding pipe 52 is arranged on one side of the feeding shell 51 and connected with the raw material pipe. The discharge pipe 53 is arranged on the other side of the feeding shell 51 and connected with the feeding pipe 4. The pulse control member is arranged in the feeding shell 51 and between the feeding pipe 52 and the discharge pipe 53. The pulse control member can control the feeding of the material from the raw material pipe to the feeding pipe 4.

[0042] In some embodiments, the pulse control member comprises a plug 54, an execution cylinder 55 and a solenoid valve 56. The plug 54 can be inserted and matched with the feeding pipe 52 on one side of the feeding shell 51 to block the feeding pipe 52 and prevent the material in the feeding pipe 52 from flowing out. The execution cylinder 55 is arranged on the side of the feeding shell 51 close to the discharge pipe 53. The output shaft of the execution cylinder 55 extends into the feeding shell 51 and is fixedly connected with the plug 54 coaxially. The output shaft of the execution cylinder 55 can slide in the feeding shell 51 and is sealingly connected with the feeding shell 51. A sealing ring can be sleeved on the output shaft of the execution cylinder 55 and embedded in the feeding shell 51 to maintain the sealing state in the feeding shell 51 and prevent the material from leaking. The solenoid valve 56 is connected with the execution cylinder 55 through a gas supply pipe and connected with an external pneumatic device. Specifically, the solenoid valve 56 can be a three-way valve. The three connection ports of the solenoid valve 56 are respectively connected with the gas inlet and gas outlet of the execution cylinder 55 and the external pneumatic device. The communication between the external pneumatic device and the gas inlet or gas outlet of the execution cylinder 55 is controlled through the solenoid valve 56 to control the action of the execution cylinder 55 and further control the opening and closing of the plug 54 on the feeding pipe 52 to realize the pulse feeding.

[0043] In some embodiments, the discharging control member 7 can be a pneumatic butterfly valve. The pneumatic butterfly valve has simple structure and is easy to operate, which can quickly and effectively control the discharging of the material in the metering bin 1.

[0044] In some embodiments, the metering bin 1 comprises a vibrator 11 arranged on the outer wall of the metering bin 1 to accelerate the accumulation of the material at the bottom of the metering bin 1 and avoid the accumulation of the material on the inner wall of the metering bin 1, thereby improving the metering accuracy of the metering device.

[0045] In some embodiments, a control system is further included, which is electrically connected with the weighing assembly 3, the pulse feeding assembly 5, the vacuum assembly 6, the discharging control member 7 and the back flushing assembly 9. The control system can collect the values fed back by each structure, calculate and issue corresponding instructions to realize the automatic metering and conveying of the device and improve the conveying efficiency.

[0046] The specific working principle is as follows:

[0047] Standby state: after the system is started, the vacuum pump connected with the vacuum assembly 6 starts to work, the blanking control member 7 is closed with the pulse feeding assembly 5, and the vacuum valve 62 is opened. At this time, the vacuum pump is directly connected with the atmosphere, no material is transported, and the system is in a standby state.

[0048] Vacuumizing and feeding stage: when the system sends a signal to start metering, the vacuum valve 62 is closed, the vacuum pump starts to communicate with the metering bin 1, and the metering bin 1 is vacuumized. When the vacuum degree reaches the required value of negative pressure transportation, the electromagnetic valve 56 controls the execution cylinder 55 to drive the plug 54 to move, opens the feeding pipe, and makes it in a normally open state, the pulse feeding assembly 5 communicates with the feeding bin 2 through the feeding pipe 4, at this time, the material of the pulse feeding assembly 5 is in a negative pressure state and enters the feeding bin 2 through the discharge pipe 53 of the pulse feeding assembly 5 along with the airflow, and falls into the metering bin 1. Due to the existence of the filter element on the communication partition 63, the material is separated and stored below the communication partition 63, so as to avoid the material entering the vacuum chamber 64. After reaching the pre-set transportation time (usually the material transportation time can be set according to the experience value or test data during debugging, so that the weight of the first discharging is slightly less than the set value), the vacuum valve 62 is opened, and the pulse feeding assembly 5 is closed, the negative pressure in the metering bin 1 is quickly released and is in a normal pressure state, and the weighing assembly 3 can quickly detect the increased weight of the material in the metering bin 1. The system (tare weight has been pre-measured and recorded in the system).

[0049] Precise feeding stage: the vacuum valve 62 is closed again, so that the metering bin 1 is in a vacuum state again. At this time, the pulse feeding assembly 5 is not in a normally open state, but the plug 54 at the front end of the execution cylinder 55 is controlled by the electromagnetic valve 56 to open and close in a pulse mode (the opening time of each time can be 0.2s-2s, and the opening interval is 5s), so that the material enters the metering bin 1 in an intermittent and small batch mode. When the pulse feeding assembly 5 is closed each time, the vacuum valve 62 is closed, and the weighing assembly 3 starts to detect whether the weight of the material in the metering bin 1 reaches the expected deviation range of the set value. If the actual weight of the material is within the allowable deviation range of the set value, the current feeding is ended.

[0050] The last feeding is finished, the vacuum valve 62 is opened, the pulse feeding assembly 5 is closed, the metering bin 1 is released from the vacuum state, then the discharging control member 7 is opened, and the material of the current batch is discharged into the lower packaging bag through the discharging pipe 8. The vibrator 11 on the outer wall of the metering bin 1 starts to work to assist the discharging during the discharging process, and the discharging time can be preset according to the weight of the material of the current batch. When the discharging is close to the end, the back flushing assembly 9 starts to work, the compressed air in the air chamber 92 cleans the material adsorbed on the filter element through the back flushing electromagnetic valve 91, and then the material is discharged through the discharging control member 7 and the discharging pipe 8. When the discharging time is finished, the discharging control member 7 is closed, the weighing assembly 3 weighs the equipment in the normal pressure state, takes the weight value as the tare weight of the next metering and records in the system, and calculates the discharging weight of the current batch and records in the system. Usually, the packaging bag below needs to be discharged through multiple batches to reach the preset single package weight, and the discharging weight of each batch is recorded and counted in the control system. When the last batch is discharged, the discharging control member 7 also needs to be pulsed and accurately discharged under the control of the system, so as to ensure that the total weight of the material in the lower packaging bag is within the allowable error range of the set value. After the discharging is finished, the discharging control member 7 is closed, and the lower packaging bag can be replaced and fixed before the next discharging.

[0051] The above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A bulk material vacuum conveying and metering device for spent lithium batteries, characterized by: It comprises a metering bin (1); A feeding bin (2) is arranged on the top of the metering bin (1) and is in sealed connection with the metering bin (1); A weighing assembly (3) is arranged between the metering bin (1) and the feeding bin (2); A feeding pipe (4) penetrates the feeding bin (2); A pulse feeding assembly (5) is arranged between the feeding pipe (4) and a raw material pipeline; A vacuum assembly (6) is arranged on the top of the feeding bin (2); A discharging control member (7) is arranged on the bottom of the metering bin (1); A discharging pipe (8) is arranged on the bottom of the discharging control member (7).

2. The vacuum conveying and metering device for bulk material of waste lithium batteries according to claim 1, characterized in that: The vacuum assembly (6) comprises a tee (61) arranged on the top of the feeding bin (2) and connected with a vacuum pump; A vacuum valve (62) is connected with the tee (61) at one end and connected with the atmosphere at the other end; A communication partition (63) is arranged in the feeding bin (2) and above the feeding pipe (4); A vacuum chamber (64) is arranged between the communication partition (63) and the top of the feeding bin (2).

3. The vacuum conveying and metering device for bulk material of waste lithium batteries according to claim 2, characterized in that: The communication partition (63) comprises a partition plate arranged in the feeding bin (2) and above the feeding pipe (4), and a plurality of communication holes are arranged on the partition plate; A filter core is coaxially arranged with the communication holes and fixedly arranged on the bottom of the partition plate.

4. The vacuum conveying and metering device for bulk material of waste lithium batteries according to claim 3, characterized in that: It further comprises a back flushing assembly (9) comprising a back flushing electromagnetic valve (91) in communication with the vacuum chamber (64); An air storage chamber (92) is arranged on the outer wall of the feeding bin (2) and connected with the back flushing electromagnetic valve (91).

5. The vacuum conveying and metering device for bulk material of waste lithium batteries according to claim 1, characterized in that: The pulse feeding assembly (5) comprises a feeding shell (51); A feeding pipe (52) is arranged on one side of the feeding shell (51) and connected with the raw material pipeline; A discharging pipe (53) is arranged on the other side of the feeding shell (51) and connected with the feeding pipe (4); A pulse control member is arranged in the feeding shell (51) and between the feeding pipe (52) and the discharging pipe (53).

6. A vacuum conveying and metering device for bulk material of spent lithium batteries according to claim 5, characterized in that: The pulse control member comprises a plug (54) which can block the feeding pipe (52) arranged on one side of the feeding shell (51); An execution cylinder (55) is arranged on one side of the feeding shell (51) close to the discharging pipe (53), and the output shaft of the execution cylinder (55) extends into the feeding shell (51) and is fixedly connected with the plug (54) in a coaxial manner; An electromagnetic valve (56) is connected with the execution cylinder (55) through a gas conveying pipe and connected with an external pneumatic device.

7. The vacuum conveying and metering device for bulk material of waste lithium batteries according to claim 1, characterized in that: The metering bin (1) comprises a vibrator (11) arranged on the outer wall of the metering bin (1).

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