Slurry filtering and transporting system

Abstract

The utility model provides a slurry filtration transportation system, including pulping equipment, treatment equipment and storage equipment, the treatment equipment includes a filtration device and a transportation device, the transportation device includes a liquid inlet assembly, a liquid outlet assembly and a recovery assembly, the liquid inlet assembly is communicated with the pulping equipment and the filtration device, the liquid outlet assembly is communicated with the storage equipment and the filtration device, and the recovery assembly is communicated with the filtration device. The recycling assembly communicates with the filtering device and the storage device. According to the slurry filtering and transporting system, the slurry remaining in the filtering device is allowed to enter the recycling assembly and then is collected to the storage equipment, so that the slurry remaining in the filtering device is reduced, the waste of the remaining slurry is avoided, and the yield of the slurry is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a slurry filtering and transporting system. Background Art

[0002] The production of lithium batteries involves a homogenization process, which aims to obtain lithium battery slurry. After the current collector surface is coated with the lithium battery slurry, a pole roll can be obtained. The slurry prepared by the pulping equipment needs to be filtered to remove impurities and then transported to the storage equipment. The problem with the filtering and transporting operation of the slurry is that there is residual slurry in the filtering device. It is difficult to clean the residual slurry after long-term accumulation, and mixing with the newly prepared slurry will result in poor coating quality on the surface of the pole roll. The current countermeasure is to manually clean the filtering device to remove the accumulated slurry when the slurry filtering and transporting operation stops. Manual cleaning affects production efficiency and increases the operation burden. Summary of the Utility Model

[0003] In view of this, the utility model provides a slurry filtering and transporting system that can reduce the residual slurry in the filtering device and recycle the residual slurry.

[0004] The slurry filtering and transporting system provided by the utility model includes a pulping device, a processing device and a storage device. The processing device includes a filtering device and a transporting device. The transporting device includes a liquid inlet component, a liquid outlet component and a recycling component. The liquid inlet component communicates the pulping device with the filtering device. The liquid outlet component communicates the storage device with the filtering device. The recycling component communicates the filtering device with the storage device.

[0005] The slurry filtering and transporting system of the utility model allows the slurry remaining in the filtering device to enter the recycling component and then be collected in the storage device, reducing the slurry residue in the filtering device and reducing the waste of the residual slurry, thereby improving the output of the slurry.

[0006] In some embodiments, the transporting device further includes a connecting pipe. The pulping device and the storage device are respectively connected to two ends of the connecting pipe. The connecting pipe includes at least one set of connecting parts. Each connecting part includes a liquid inlet part, a recycling part and a liquid outlet part arranged in sequence. The liquid inlet component, the recycling component and the liquid outlet component are respectively connected to the liquid inlet part, the recycling part and the liquid outlet part.

[0007] In some embodiments, the transporting device further includes at least one set of pipe valves. The pipe valves correspond to the connecting parts one by one. Each pipe valve includes a first valve and a second valve. The first valve is arranged between the corresponding liquid inlet part and the recycling part. The second valve is arranged between the corresponding recycling part and the liquid outlet part.

[0008] In some embodiments, the filtering device includes a container provided with a waste discharge port. The recycling component includes a recycling pipe. The recycling pipe connects the waste discharge port and the recycling part.

[0009] In some embodiments, the recovery component further includes a recovery valve disposed in the recovery pipe.

[0010] In some embodiments, the connecting pipe includes two sets of connecting parts arranged in sequence, the filtering device includes a rotary filter and a filtering iron remover, the liquid inlet component includes a first liquid inlet pipe and a second liquid inlet pipe, the liquid outlet component includes a first liquid outlet pipe and a second liquid outlet pipe, and the recovery component includes a first recovery pipe and a second recovery pipe.

[0011] The first liquid inlet pipe and the first liquid outlet pipe are connected to the rotary filter and are respectively connected to the liquid inlet part and the liquid outlet part of the first set of connecting parts.

[0012] The second liquid inlet pipe and the second liquid outlet pipe are connected to the filtering iron remover and are respectively connected to the liquid inlet part and the liquid outlet part of the second set of connecting parts.

[0013] The first recovery pipe is connected to the rotary filter and the recovery part of the first set of connecting parts, and the second recovery pipe is connected to the filtering iron remover and the recovery part of the second set of connecting parts.

[0014] In some embodiments, both the filtering iron remover, the second liquid inlet pipe and the second liquid outlet pipe are configured as two, the second recovery pipe is configured as two sets, and the two filtering iron removers are arranged in parallel.

[0015] In some embodiments, the processing device further includes a propulsion device, the connecting pipe further includes a first connecting part and a second connecting part, the first connecting part, the second connecting part and the connecting parts are arranged in sequence, the first connecting part is connected to the pulping device, and the second connecting part is connected to the propulsion device.

[0016] In some embodiments, the processing device further includes a recovery device, the connecting pipe further includes a third connecting part and a fourth connecting part, the second connecting part, the connecting parts, the third connecting part and the fourth connecting part are arranged in sequence, the third connecting part is connected to the recovery device, and the fourth connecting part is connected to the storage device.

[0017] In some embodiments, the transportation device further includes a third valve and a fourth valve, the third valve is disposed between the second connecting part and the propulsion device, and the fourth valve is disposed between the third connecting part and the recovery device. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the slurry filtering and transportation system according to Embodiment 1 of the present utility model;

[0019] Figure 2 is Figure 1 a partial schematic diagram of the slurry filtering and transportation system shown;

[0020] Figure 3 is a schematic diagram of the slurry filtering and transportation system according to Embodiment 2 of the present utility model.

[0021] Reference numerals: 10, pulping equipment; 20, filtering device; 21, rotary filter; 22, filtering iron remover; 31, liquid inlet assembly; 311, first liquid inlet pipe; 312, second liquid inlet pipe; 313, first liquid inlet valve; 314, second liquid inlet valve; 32, liquid outlet assembly; 321, first liquid outlet pipe; 322, second liquid outlet pipe; 323, first liquid outlet valve; 324, second liquid outlet valve; 33, recycling assembly; 331, first recycling pipe; 332, second recycling pipe; 333, first recycling valve; 334, second recycling valve; 34, connecting pipe; 341, first connecting part; 342, second connecting part; 343, liquid inlet part; 344, recycling part; 345, liquid outlet part; 346, third connecting part; 347, fourth connecting part; 351, first valve; 352, second valve; 353, third valve; 354, fourth valve; 355, fifth valve; 356, sixth valve; 36, connecting pipe in series; 40, propulsion device; 50, recycling device; 60, storage equipment; 70, diaphragm pump. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0024] The present invention provides a slurry filtering and transporting system, which can be used for filtering and transporting lithium battery slurry. In addition to lithium battery slurry, the system can also filter and transport other types of slurries. Hereinafter, taking the homogenization process of lithium battery slurry as an example, the composition and working principle of the slurry filtering and transporting system of the present invention will be introduced, and the application of the slurry filtering and transporting system in other slurry treatment processes will not be elaborated.

[0025] Refer to Figure 1 and Figure 3, the slurry filtration and transportation system of the present utility model includes a pulping device 10, a processing device and a storage device 60. The pulping device 10 is used to produce slurry. The processing device includes a filtering device 20 and a transportation device. The transportation device is responsible for transporting the slurry from the pulping device 10 to the filtering device for the filtering device 20 to filter. The filtered slurry is transported by the transportation device into the storage device 60, and the storage device 60 is used to store the slurry and supply the slurry for the electrode roll coating process.

[0026] Refer to Figures 1 - 2 , the transportation device includes a liquid inlet component 31 and a liquid outlet component 32. The liquid inlet component 31 has a liquid inlet flow channel connecting the pulping device 10 and the filtering device 20, and the liquid outlet component 32 has a liquid outlet flow channel connecting the storage device 60 and the filtering device 20. The filtering device 20 includes a filtering appliance and a container for accommodating the filtering appliance. The slurry from the pulping device 10 can flow into the container along the liquid inlet flow channel, and after being purified by the filtering appliance, the slurry can flow into the storage device 60 along the liquid outlet flow channel.

[0027] In some embodiments, the liquid inlet component 31 includes a liquid inlet pipe connecting the container and a liquid inlet valve provided on the liquid inlet pipe. The liquid outlet component 32 includes a liquid outlet pipe connecting the container and a liquid outlet valve provided on the liquid outlet pipe. The liquid inlet pipe is used to form the liquid inlet flow channel, and the liquid outlet pipe is used to form the liquid outlet flow channel. The liquid inlet flow channel connects the inner cavity of the container with the inside of the pulping device 10, and the liquid outlet flow channel connects the inner cavity of the container with the inside of the storage device 60. The liquid inlet valve is used to control the dredging and blocking of the liquid inlet flow channel, and the liquid outlet valve is used to control the dredging and blocking of the liquid outlet flow channel.

[0028] Optionally, the filtering device 20 is configured in multiple numbers. Refer to Figures 1 - 2 , the multiple filtering devices 20 are divided into a rotary filter 21 and a filtering iron remover 22 according to the filtering principle. The liquid inlet pipe includes a first liquid inlet pipe 311 and a second liquid inlet pipe 312, and the liquid outlet pipe includes a first liquid outlet pipe 321 and a second liquid outlet pipe 322. The first liquid inlet pipe 311 and the second liquid inlet pipe 312 are respectively connected to the rotary filter 21 and the filtering iron remover 22, and respectively form a first liquid inlet flow channel and a second liquid inlet flow channel. The first liquid outlet pipe 321 and the second liquid outlet pipe 322 are respectively connected to the rotary filter 21 and the filtering iron remover 22, and respectively form a first liquid outlet flow channel and a second liquid outlet flow channel. The first liquid inlet flow channel connects the pulping device 10 with the container of the rotary filter 21, and the first liquid outlet flow channel connects the storage device 60 with the container of the rotary filter 21; the second liquid inlet flow channel connects the pulping device 10 with the container of the filtering iron remover 22, and the second liquid outlet flow channel connects the storage device 60 with the container of the filtering iron remover 22.

[0029] Furthermore, refer to Figure 2, the inlet valve includes a first inlet valve 313 provided on the first inlet pipe 311 and a second inlet valve 314 provided on the second inlet pipe 312, and the outlet valve includes a first outlet valve 323 provided on the first outlet pipe 321 and a second outlet valve 324 provided on the second outlet pipe 322. The first inlet valve 313 is used to control the switching between the unblocked and blocked states of the first inlet flow channel, the first outlet valve 323 is used to control the switching between the unblocked and blocked states of the first outlet flow channel, the second inlet valve 314 is used to control the switching between the unblocked and blocked states of the second inlet flow channel, and the second outlet valve 324 is used to control the switching between the unblocked and blocked states of the second outlet flow channel.

[0030] In some embodiments, the transportation device further includes a connecting pipe 34. The connecting pipe 34 has a transportation flow channel. The pulping device 10 and the storage device 60 are respectively connected to two ends of the connecting pipe 34 and are communicated through the transportation flow channel. The connecting pipe 34 includes at least one set of connecting parts. Each set of connecting parts includes an inlet part 343 and an outlet part 345. The inlet part 343 and the outlet part 345 are arranged in sequence along the extending direction of the transportation flow channel. The inlet assembly 31 and the outlet assembly 32 are respectively connected to the inlet part 343 and the outlet part 345. The extending direction of the transportation flow channel is defined as the direction in which the pulp flows in the connecting pipe 34, away from the pulping device 10 and close to the storage device 60.

[0031] Optionally, referring to Figures 1 - 3 , the connecting pipe 34 extends from the pulping device 10 to the processing device, and then extends from the processing device to the storage device 60, and includes two sets of connecting parts. Along the extending direction of the transportation flow channel, the inlet part 343 of the first set of connecting parts, the outlet part 345 of the first set of connecting parts, the inlet part 343 of the second set of connecting parts, and the outlet part 345 of the second set of connecting parts are arranged in sequence. Two ends of the first inlet pipe 311 are respectively connected to the inlet part 343 of the first set of connecting parts and the rotary filter 21, two ends of the first outlet pipe 321 are respectively connected to the outlet part 345 of the first set of connecting parts and the rotary filter 21, two ends of the second inlet pipe 312 are respectively connected to the inlet part 343 of the second set of connecting parts and the filter and iron remover 22, and two ends of the second outlet pipe 322 are respectively connected to the outlet part 345 of the second set of connecting parts and the filter and iron remover 22.

[0032] Thus, the pulp from the pulping device 10 can flow along the connecting pipe 34 towards the liquid inlet part 343 of the first set of connecting pipe parts, and then flow into the rotary filter 21 through the first liquid inlet pipe 311. After being filtered in the rotary filter 21, the pulp flows along the first liquid outlet pipe 321 towards the liquid outlet part 345 of the first set of connecting pipe parts, then flows along the connecting pipe 34 towards the liquid inlet part 343 of the second set of connecting pipe parts, and then flows into the filtering and iron removing device 22 through the second liquid inlet pipe 312. After being filtered again in the filtering and iron removing device 22, the pulp flows along the second liquid outlet pipe 322 towards the liquid outlet part 345 of the second set of connecting pipe parts, and finally flows along the connecting pipe 34 towards the storage device 60.

[0033] Further, as Figure 3 shown in the pulp filtering and transportation system, two filtering and iron removing devices 22 are configured, both the second liquid inlet pipe 312 and the second liquid outlet pipe 322 are configured as two. The liquid inlet part 343 of the second set of connecting pipe parts is connected to two second liquid inlet pipes 312, and the liquid outlet part 345 of the second set of connecting pipe parts is connected to two second liquid outlet pipes 322. One of the second liquid inlet pipes 312 and one of the second liquid outlet pipes 322 are connected to one of the filtering and iron removing devices 22, and the other second liquid inlet pipe 312 and the other second liquid outlet pipe 322 are connected to the other filtering and iron removing device 22. The two filtering and iron removing devices 22 are arranged in parallel.

[0034] In this way, the two filtering and iron removing devices 22 are backup to each other. When one of the filtering and iron removing devices 22 breaks down, is suspended for use or is being cleaned, the other set of filtering and iron removing devices 22 can still continue to operate, thus ensuring that the filtering and transportation operation of the pulp does not have to be interrupted forcedly.

[0035] In some embodiments, the processing device further includes a propulsion device 40 having a propulsion channel. The connecting pipe 34 includes a first connecting part 341 and a second connecting part 342. The first connecting part 341 and the second connecting part 342 are arranged in sequence along the extending direction of the transportation channel. The first connecting part 341 is connected to the pulping device 10 to make the inside of the pulping device 10 communicate with the transportation channel, and the second connecting part 342 is connected to the propulsion device 40 to make the propulsion channel communicate with the transportation channel. After the propulsion device 40 is started, it can generate a propulsion air flow for cleaning the residual pulp in the connecting pipe 34. The propulsion air flow enters the transportation channel from the propulsion channel, and then flows along the transportation channel and gradually approaches the storage device 60. The residual pulp in the transportation channel is pushed into the storage device 60 under the thrust of the propulsion air flow.

[0036] In this way, not only can the residual pulp in the transportation channel be cleaned, preventing the pulp from accumulating in the transportation channel for a long time and being difficult to clean, and preventing the mixing of the residual pulp and the newly produced pulp from affecting the pulp quality, but also the recycling of the residual pulp in the transportation channel is realized, improving the output of the pulp.

[0037] Refer to Figure 1 and Figure 3, in some embodiments, the transportation device further includes a diaphragm pump 70. One end of the diaphragm pump 70 is connected to the pulping device 10 through a pipeline, and the other end of the diaphragm pump 70 is connected to the first connection portion 341 of the communication pipe 34. The diaphragm pump 70 is used to pump the pulp made by the pulping device 10 into the communication pipe 34, so that the filtering device 20 can obtain the pulp from the pulping device 10. After the filtering device 20 finishes filtering the pulp, the pulp flows into the communication pipe 34 again under the drive of the diaphragm pump 70 and finally flows into the storage device 60.

[0038] Optionally, the processing device further includes a pushing ball. The initial position of the pushing ball is located in the propulsion device 40. When the filtering device 20 finishes filtering the pulp, the propulsion device 40 can be started to generate a propulsion air flow. After the propulsion device 40 is started, the pushing ball enters the transportation flow channel from the propulsion channel under the thrust of the propulsion air flow. The surface of the pushing ball forms a sliding fit with the inner wall surface of the transportation flow channel. Therefore, the residual pulp can be scraped off from the inner wall surface of the transportation flow channel by the pushing ball, improving the effect of cleaning the transportation flow channel.

[0039] Further, referring to Figure 1 and Figure 3 , the processing device further includes a recovery device 50 having a recovery channel. The communication pipe 34 further includes a third connection portion 346 and a fourth connection portion 347. The first connection portion 341, the second connection portion 342, the third connection portion 346 and the fourth connection portion 347 are arranged in sequence along the extension direction of the transportation flow channel. The third connection portion 346 is connected to the recovery device 50 to connect the recovery channel to the transportation flow channel, and the fourth connection portion 347 is connected to the storage device 60 to connect the inside of the storage device 60 to the transportation flow channel. The pushing ball sequentially passes through the propulsion channel, the second connection portion 342, the first set of connecting pipe portions, the second set of connecting pipe portions, the third connection portion 346 and enters the recovery channel under the thrust of the propulsion air flow, thereby realizing the recovery of the pushing ball by the recovery device 50. After being cleaned, the pushing ball can be put into the propulsion device 40 again and reused.

[0040] In view of the fact that the pulp is extremely likely to remain in the filtering device, the pulp filtering and transportation system of the present invention defines that the transportation device further includes a recovery assembly 33, and the recovery assembly 33 has a recovery channel connecting the filtering device 20 and the storage device 60. In this way, even after the pulp is filtered by the filtering appliance, a part of the pulp remains in the filtering device 20. These residual pulps can still be recovered through the recovery assembly 33 and then sent to the storage device 60, reducing the waste of the residual pulp, increasing the output of the pulp, preventing the internal cleaning of the filtering device 20 from being difficult due to the long-term remaining of the pulp in the filtering device 20, and avoiding the problem of the deterioration of the pulp quality caused by the mixing of the newly made pulp and the pulp remaining in the filtering device.

[0041] Specifically, referring to Figures 1 - 3, in some embodiments, each set of connecting pipes further includes a recovery part 344 located between the liquid inlet part 343 and the liquid outlet part 345 of the set of connecting pipes. The container of the filtering device 20 includes a liquid inlet, a liquid outlet, and a residue discharge port. The liquid inlet pipe is connected to the liquid inlet, and the liquid outlet pipe is connected to the liquid outlet. The recovery assembly 33 includes a recovery pipe having a recovery flow path. The two ends of the recovery pipe are respectively connected to the residue discharge port and the recovery part 344. In this way, the inside of the container of the filtering device 20 is communicated with the transportation flow path of the connecting pipe 34 through the recovery flow path. When most of the slurry flows into the liquid outlet pipe through the liquid outlet, the slurry remaining in the container can enter the recovery pipe from the residue discharge port, then enter the transportation flow path from the recovery pipe, and finally flow into the storage device 60 together with the slurry flowing into the transportation flow path through the liquid outlet pipe.

[0042] It can be understood that in other embodiments, the other end of the recovery pipe relatively far from the residue discharge port can also be directly connected to the liquid outlet pipe so that the recovery flow path is directly communicated with the liquid outlet flow path, or the other end of the recovery pipe relatively far from the residue discharge port can be directly connected to the storage device 60 so that the recovery flow path is directly communicated with the inside of the storage device 60. In this way, the slurry remaining in the container can also be cleaned and recovered.

[0043] In some embodiments, the liquid inlet part 343, the recovery part 344, and the liquid outlet part 345 are arranged in sequence along the extending direction of the transportation flow path. Refer to Figures 1 - 3 , the recovery pipe includes a first recovery pipe 331 and a second recovery pipe 332. Along the extending direction of the transportation flow path, the liquid inlet part 343 of the first set of connecting pipes, the recovery part 344 of the first set of connecting pipes, the liquid outlet part 345 of the first set of connecting pipes, the liquid inlet part 343 of the second set of connecting pipes, the recovery part 344 of the second set of connecting pipes, and the liquid outlet part 345 of the second set of connecting pipes are arranged in sequence. The first recovery pipe 331 is connected to the residue discharge port of the rotary filter 21 and the recovery part 344 of the first set of connecting pipes, and the second recovery pipe 332 is connected to the residue discharge port of the filter magnetic separator 22 and the recovery part 344 of the second set of connecting pipes.

[0044] In this way, the slurry remaining in the rotary filter 21 and the slurry remaining in the filter magnetic separator 22 can flow into the connecting pipe 34 through the first recovery pipe 331 and the second recovery pipe 332 respectively. These remaining slurries can finally flow into the storage device 60, and both the rotary filter 21 and the filter magnetic separator 22 can be effectively cleaned to prevent the remaining slurry from mixing into the newly prepared slurry.

[0045] Optionally, the residue discharge port is opened at the bottom of the container closest to the ground. With this setting, the slurry remaining in the container of the filtering device 20 can automatically flow into the recovery pipe by its own weight. Therefore, the remaining slurry in the container is easier to be emptied and drained, improving the recovery efficiency and convenience of the remaining slurry.

[0046] In some other embodiments, the recovery assembly 33 further includes a promotion and discharge thruster. The promotion and discharge thruster includes an air flow output channel communicating with the recovery pipe. The inside of the promotion and discharge thruster can generate an air pressure higher than that of the recovery flow channel. After the promotion and discharge thruster is started, a promotion and discharge air flow can be generated. The promotion and discharge air flow enters the recovery pipe along the air flow output channel and pushes the residual slurry entering the recovery pipe to flow faster into the transport flow channel. Therefore, the promotion and discharge thruster can improve the cleaning and recovery efficiency of the residual slurry.

[0047] As shown in Figure 1 the slurry filtration and transportation system shown, the number of the filter and iron removers 22 is multiple. Refer to Figure 2 , the transportation device further includes at least one connecting pipe 36. The multiple filter and iron removers are connected in series through the connecting pipe 36 to form a filter and iron removal queue. One end of each connecting pipe 36 is connected to the liquid outlet of a filter and iron remover 22, and the other end of each connecting pipe 36 is connected to the liquid inlet of another filter and iron remover 22. The second inlet pipe 312 is connected to the liquid inlet of the filter and iron remover 22 at the head of the filter and iron removal queue, and the second outlet pipe 322 is connected to the liquid outlet of the filter and iron remover 22 at the end of the filter and iron removal queue. The number of the second recovery pipes 332 is equivalent to the number of the filter and iron removers 22. The multiple filter and iron removers 22 are respectively connected to the multiple second recovery pipes 332 in one-to-one correspondence through their respective surplus material discharge ports.

[0048] Furthermore, the second set of connecting pipe parts includes multiple recovery parts 344 arranged in sequence along the extending direction of the transport flow channel. The number of the multiple recovery parts 344 of the second set of connecting pipe parts is equivalent to the number of the second recovery pipes 332. The multiple second recovery pipes 332 are respectively connected to the multiple recovery parts 344 of the second set of connecting pipe parts in one-to-one correspondence.

[0049] In this way, the slurry can be filtered multiple times through the multiple filter and iron removers 22, and the iron filings in the slurry can be cleaned more thoroughly.

[0050] As shown in Figure 3 the slurry filtration and transportation system shown, the second recovery pipes 332 are configured into two groups. One group of the second recovery pipes 332 connects one filter and iron remover 22 to the recovery part 344 of the second set of connecting pipe parts, and the other group of the second recovery pipes 332 connects another filter and iron remover 22 to the recovery part 344 of the second set of connecting pipe parts. In this way, the slurry remaining in the two filter and iron removers 22 can be cleaned and recovered.

[0051] Furthermore, the recovery assembly 33 further includes a recovery valve provided on the recovery pipe. The recovery valve is used to control the switching of the recovery flow channel between the unblocked and blocked states. Refer to Figure 2, the recovery valve includes a first recovery valve 333 and a second recovery valve 334. The first recovery valve 333 is provided in the first recovery pipe 331, and the second recovery valve 334 is provided in the second recovery pipe 332. The first recovery valve 333 is used to control the recovery flow channel of the first recovery pipe 331 to switch between the unblocked and blocked states, and the second recovery valve 334 is used to control the recovery flow channel of the second recovery pipe 332 to switch between the unblocked and blocked states. The recovery valve can be a manual valve that is manually controlled to open and close, or an automatic valve that automatically opens and closes.

[0052] Further, for the slurry filtration and transportation system as shown in 3, the second recovery valve 334 is configured into two groups. One group of the second recovery valves 334 is provided in one group of the second recovery pipes 332, and the other group of the second recovery valves 334 is provided in the other group of the second recovery pipes 332. Each group of the second recovery valves 334 can be individually controlled, that is, the opening and closing states of the two groups of the second recovery valves 334 are independent of each other and do not affect each other.

[0053] Optionally, the recovery valve includes a first valve port and a second valve port. The connection mode between the recovery assembly 33, the filtration device 20, and the communication pipe 34 can be as follows: ① The first valve port is connected to the surplus material discharge port of the filtration device 20, the second valve port is connected to one end of the recovery pipe, and the other end of the recovery pipe is connected to the recovery part 344 of the communication pipe 34; ② The recovery pipe includes a first pipe section and a second pipe section. The two ends of the first pipe section are respectively connected to the surplus material discharge port of the filtration device 20 and the first valve port, and the two ends of the second pipe section are respectively connected to the second valve port and the recovery part 344 of the communication pipe 34; ③ The surplus material discharge port of the filtration device 20 is connected to one end of the recovery pipe, the other end of the recovery pipe is connected to the first valve port, and the second valve port is connected to the recovery part 344 of the communication pipe 34.

[0054] In some embodiments, along the extension direction of the transportation flow channel, the first connection part 341, the second connection part 342, the liquid inlet part 343 of the first group of connecting pipe parts, the recovery part 344 of the first group of connecting pipe parts, the liquid outlet part 345 of the first group of connecting pipe parts, the liquid inlet part 343 of the second group of connecting pipe parts, the recovery part 344 of the second group of connecting pipe parts, the liquid outlet part 345 of the second group of connecting pipe parts, the third connection part 346, and the fourth connection part 347 are arranged in sequence. Refer to Figure 1 and Figure 3 , the transportation device further includes two groups of pipe valves provided on the communication pipe 34. The first group of pipe valves corresponds to the first group of connecting pipe parts, and the first group of pipe valves includes a first valve 351 and a second valve 352; the second group of pipe valves corresponds to the second group of connecting pipe parts, and the second group of pipe valves includes a first valve 351 and a second valve 352.

[0055] Specifically, as Figure 2As shown, the first valve 351 of the first group of pipe valves is disposed between the liquid inlet portion 343 and the recovery portion 344 of the first group of connecting pipe portions, and the second valve 352 of the first group of pipe valves is disposed between the recovery portion 344 and the liquid outlet portion 345 of the first group of connecting pipe portions; the first valve 351 of the second group of pipe valves is disposed between the liquid inlet portion 343 and the recovery portion 344 of the second group of connecting pipe portions, and the second valve 352 of the second group of pipe valves is disposed between the recovery portion 344 and the liquid outlet portion 345 of the second group of connecting pipe portions. When any one or both of the first valve 351 and the second valve 352 are closed, the transport flow path between the second connection portion 342 and the third connection portion 346 is blocked; when both the first valve 351 and the second valve 352 are opened, the transport flow path between the second connection portion 342 and the third connection portion 346 is unblocked.

[0056] Further, referring to Figure 1 and Figure 3 , the transport device further includes a third valve 353 and a fourth valve 354 disposed on the connecting pipe 34. The third valve 353 is disposed between the propulsion device 40 and the second connection portion 342, and the fourth valve 354 is disposed between the third connection portion 346 and the recovery device 50; the slurry filtration and transport system further includes a fifth valve 355 and a sixth valve 356. The fifth valve 355 is disposed on the pipeline between the pulping device 10 and the diaphragm pump 70, and the sixth valve 356 is disposed between the fourth connection portion 347 and the storage device 60.

[0057] Next, taking the Figure 1 shown slurry filtration and transport system as an example, the filtration and transport process of the slurry is introduced:

[0058] ① Open the fifth valve 355, open the first liquid inlet valve 313 and the first liquid outlet valve 323, open the second liquid inlet valve 314 and the second liquid outlet valve 324, close the third valve 353 and the fourth valve 354, close the first valve 351 and the second valve 352 of the first group of pipe valves, close the first valve 351 and the second valve 352 of the second group of pipe valves, and close all the first recovery valves 333 and all the second recovery valves 334. In this way, the first liquid inlet flow path, the first liquid outlet flow path, the second liquid inlet flow path, and the second liquid outlet flow path are all unblocked;

[0059] ② Start the diaphragm pump 70. The diaphragm pump 70 pumps the pulp in the pulping equipment 10 into the transportation device. The pulp flows into the transportation channel from the first connection part 341 and sequentially flows through the second connection part 342 and the liquid inlet part 343 of the first group of connecting pipe parts along the connecting pipe 34. Then, the pulp enters the rotary filter 21 along the first liquid inlet channel. After being filtered in the rotary filter 21, the pulp flows along the first liquid outlet channel to the liquid outlet part 345 of the first group of connecting pipe parts, thus flowing into the connecting pipe 34 again. Then, it sequentially flows through the liquid outlet part 345 of the first group of connecting pipe parts and the liquid inlet part 343 of the second group of connecting pipe parts. Next, the pulp enters the filtering magnetic separator 22 along the second liquid inlet channel. After being filtered in the filtering magnetic separator 22, the pulp flows along the second liquid outlet channel to the liquid outlet part 345 of the second group of connecting pipe parts, thus flowing into the connecting pipe 34 again. After that, the pulp flows towards the storage equipment 60;

[0060] ③ Open the sixth valve 356 so that the pulp filtered and purified by the filtering device 20 flows into the storage equipment 60 after sequentially flowing through the third connection part 346 and the fourth connection part 347;

[0061] ④ When the pulp in the pulping equipment 10 is emptied, close the diaphragm pump 70, close the first liquid inlet valve 313 and the first liquid outlet valve 323, and close the second liquid inlet valve 314 and the second liquid outlet valve 324. In this way, the first liquid inlet channel, the first liquid outlet channel, the second liquid inlet channel, and the second liquid outlet channel are all blocked;

[0062] ⑤ Open the first valve 351 and the second valve 352 of the first group of pipe valves, open the first valve 351 and the second valve 352 of the second group of pipe valves, open all the first recovery valves 333 and all the second recovery valves 334, keep the recovery channels of the first recovery pipe 331 in a dredged state for 10 - 20 minutes, and keep the recovery channels of the second recovery pipe 332 in a dredged state for 10 - 20 minutes, so that the residual pulp in the rotary filter 21 and the filtering magnetic separator 22 flows into the connecting pipe 34 through the first recovery pipe 331 and the second recovery pipe 332 respectively. After the rotary filter 21 and the filtering magnetic separator 22 are emptied of the residual pulp, close all the first recovery valves 333 and all the second recovery valves 334;

[0063] ⑥Open the third valve 353 and start the propulsion device 40. The propulsion device 40 generates a propulsion air flow and pushes the push ball located inside the propulsion device 40 into the propulsion channel. Under the thrust of the propulsion air flow, the push ball enters the connecting pipe 34 from the second connecting portion 342, and then the push ball sequentially passes through the liquid inlet portion 343 of the first set of connecting pipe portions, the recovery portion 344 of the first set of connecting pipe portions, the liquid outlet portion 345 of the first set of connecting pipe portions, the liquid inlet portion 343 of the second set of connecting pipe portions, the recovery portion 344 of the second set of connecting pipe portions, and the liquid outlet portion 345 of the second set of connecting pipe portions along the extending direction of the transport flow channel. During this period, the residual slurry flowing into the connecting pipe 34 through the recovery assembly 33 is pushed by the push ball towards the storage device 60, and the push ball scrapes the slurry adhering to the inner wall surface of the transport flow channel and thus pushes it towards the storage device 60 together;

[0064] ⑦Before the push ball reaches the third connecting portion 346, open the fourth valve 354 and operate the recovery device 50 to enable the push ball to enter the recovery channel, thereby completing the recovery of the push ball by the recovery device 50.

[0065] In this way, through the sliding fit between the push ball and the inner wall surface of the transport flow channel, the accumulated slurry inside the transport flow channel is cleaned and recovered more thoroughly, significantly reducing the wall - adhering slurry in the transport flow channel. The residual slurry flowing into the connecting pipe 34 through the recovery assembly 33 flows into the storage device 60 under the push of the push ball, greatly improving the cleaning and recovery efficiency of the residual slurry. In addition, along the extending direction of the transport flow channel, the total length of the connecting pipe 34 to be cleaned is longer. The total length to be cleaned refers to the total length of the pipe section of the connecting pipe 34 that can be cleaned by the push ball. In the Figure 1 and Figure 3 shown slurry filtering and transporting system, the transport channels between the second connecting portion 342 and the third connecting portion 346 can all be scraped by the push ball to remove the slurry adhering to the inner wall.

[0066] The technical features of the above - described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above - described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0067] Those of ordinary skill in the art in this technical field should recognize that the above - described embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as within the substantial spirit scope of the present invention, appropriate changes and variations made to the above - described embodiments fall within the scope claimed by the present invention.

Claims

1. A slurry filtration and transportation system, characterized in that: The invention comprises pulping equipment (10), processing equipment and storage equipment (60), wherein the processing equipment comprises a filtering device (20) and a transport device, and the transport device comprises a liquid inlet component (31), a liquid outlet component (32) and a recovery component (33). The liquid inlet component (31) connects the pulping device (10) and the filtering device (20), the liquid outlet component (32) connects the storage device (60) and the filtering device (20), and the recovery component (33) connects the filtering device (20) and the storage device (60).

2. The slurry filtration and transportation system according to claim 1, characterized in that: The transport device further comprises a connecting pipe (34), the pulping device (10) and the storage device (60) are respectively connected to two ends of the connecting pipe (34). The connecting pipe (34) comprises a connecting portion, and the connecting portion comprises a liquid inlet portion (343), a recovery portion (344) and a liquid outlet portion (345) which are arranged in sequence. The liquid inlet component (31), the recovery component (33) and the liquid outlet component (32) are respectively connected to the liquid inlet portion (343), the recovery portion (344) and the liquid outlet portion (345).

3. The slurry filtration and transportation system according to claim 2, characterized in that: The transport device further comprises at least one set of pipe valves, wherein the pipe valves correspond to the connecting pipes one by one. The pipe valve includes a first valve (351) and a second valve (352), wherein the first valve (351) is arranged between the corresponding liquid inlet portion (343) and the recovery portion (344), and the second valve (352) is arranged between the corresponding recovery portion (344) and the liquid outlet portion (345).

4. The slurry filtration and transportation system according to claim 2, characterized in that: The filtering device (20) comprises a container with a residual material discharge port, and the recovery component (33) comprises a recovery pipe, and the recovery pipe connects the residual material discharge port and the recovery part (344).

5. The slurry filtration and transportation system according to claim 4, characterized in that: The recovery component (33) also includes a recovery valve arranged on the recovery pipe.

6. The slurry filtration and transportation system according to claim 2, characterized in that: The connecting pipe (34) comprises two groups of connecting pipes arranged in sequence, the filtering device (20) comprises a rotary filter (21) and a filter iron remover (22), the liquid inlet assembly (31) comprises a first liquid inlet pipe (311) and a second liquid inlet pipe (312), the liquid outlet assembly (32) comprises a first liquid outlet pipe (321) and a second liquid outlet pipe (322), and the recovery assembly (33) comprises a first recovery pipe (331) and a second recovery pipe (332), wherein: The first liquid inlet pipe (311) and the first liquid outlet pipe (321) are connected to the rotary filter (21), and are respectively connected to the liquid inlet portion (343) and the liquid outlet portion (345) of the first group of connecting pipes; The second liquid inlet pipe (312) and the second liquid outlet pipe (322) are connected to the filter iron remover (22), and are respectively connected to the liquid inlet portion (343) and the liquid outlet portion (345) of the second group of connecting pipes; The first recovery pipe (331) connects the rotary filter (21) and the recovery part (344) of the first group of connecting pipes, and the second recovery pipe (332) connects the filter iron remover (22) and the recovery part (344) of the second group of connecting pipes.

7. The slurry filtration and transportation system according to claim 6, characterized in that: The filter iron remover (22), the second liquid inlet pipe (312) and the second liquid outlet pipe (322) are each configured in pairs, the second recovery pipe (332) is configured in two groups, and the two filter iron removers (22) are arranged in parallel.

8. The slurry filtration and transportation system according to claim 2, characterized in that: The processing equipment further comprises a propulsion device (40), and the connecting pipe (34) further comprises a first connecting portion (341) and a second connecting portion (342). The first connecting portion (341), the second connecting portion (342) and the connecting portion are arranged in sequence. The first connection part (341) is connected to the pulping equipment (10), and the second connection part (342) is connected to the propulsion device (40).

9. The slurry filtration and transportation system according to claim 8, characterized in that: The processing equipment further includes a recovery device (50), and the connecting pipe (34) further includes a third connecting portion (346) and a fourth connecting portion (347). The second connection part (342), the connecting part, the third connection part (346) and the fourth connection part (347) are arranged in sequence, the third connection part (346) is connected to the recovery device (50), and the fourth connection part (347) is connected to the storage device (60).

10. The slurry filtration and transportation system according to claim 9, characterized in that: The transport device further comprises a third valve (353) and a fourth valve (354), wherein the third valve (353) is arranged between the second connection part (342) and the propulsion device (40), and the fourth valve (354) is arranged between the third connection part (346) and the recovery device (50).

Images