Pipeline slurry recovery system

Abstract

The utility model relates to a pipeline slurry recovery system, and belongs to the technical field of battery production and manufacturing, the pipeline slurry recovery system comprises a material supply main pipeline, the material supply main pipeline is used for conveying slurry to a finished product tank; the material supply unit comprises a material supply branch pipeline communicated with the material supply main pipeline; the recycling unit comprises a negative pressure tank communicated with the main feeding pipeline, and the negative pressure tank recycles slurry in the main feeding pipeline and the branch feeding pipelines through negative pressure. Due to the fact that the feeding branch pipeline is communicated with the feeding main pipeline and the recycling unit comprises the negative pressure tank communicated with the feeding main pipeline, residual slurry in the feeding branch pipeline and the feeding main pipeline can be pumped into the negative pressure tank in a negative pressure mode in the negative pressure tank to be recycled, the cleaning difficulty of the feeding pipeline can be reduced, and the cleaning efficiency of the feeding pipeline is improved. Slurry scrap is reduced and product utilization rate is increased.

Description

Technical Field

[0001] The present application relates to the technical field of battery production and manufacturing, and in particular to a pipeline slurry recovery system. Background Art

[0002] Battery slurry is a very important link in the battery production process and is the core of battery manufacturing. After the slurry is coated, rolled, and die-cut on the pole foil, it is made into pole sheets and transferred to the subsequent winding process to complete the subsequent production of the finished battery.

[0003] At present, in the battery slurry production feeding system, the feeding pipeline uses a diaphragm pump or a screw pump for pushing and conveying. When the feeding system is at the end of the production line, there is no slurry in the mixer to continue to supply the diaphragm pump or the screw pump, and the pushing and conveying action cannot continue. Therefore, at the end of the production line, there will be residual slurry in the feeding pipeline and it will be difficult to empty. The slurry accumulated in the feeding pipeline will precipitate and dry, making it difficult to clean the pipeline. At the same time, the waste of slurry will also reduce the utilization rate of the product. Summary of the invention

[0004] The embodiment of the present application provides a pipeline slurry recovery system to solve the problem in the related art that the residual slurry in the feed pipeline is difficult to utilize at the end of the production line, resulting in reduced product utilization and increased difficulty in cleaning the production line.

[0005] The present application embodiment provides a pipeline slurry recovery system, comprising:

[0006] A main feed pipeline, which is used to transport slurry to a finished product tank;

[0007] A feeding unit, the feeding unit comprising a feeding branch pipeline connected to the feeding main pipeline;

[0008] A recovery unit, wherein the recovery unit comprises a negative pressure tank connected to the main supply pipeline, and the negative pressure tank recovers the slurry in the main supply pipeline and the branch supply pipeline through negative pressure.

[0009] In some embodiments, a first valve for opening or closing an inlet end is provided on the main feed pipeline, and the branch feed pipeline and the negative pressure tank are both located downstream of the first valve.

[0010] In some embodiments, a second valve located downstream of the negative pressure tank is provided on the main supply pipeline, and a first delivery pump for delivering slurry to the downstream of the second valve is provided between the negative pressure tank and the main supply pipeline.

[0011] In some embodiments, a third valve is provided at the outlet end of the feed branch pipe, a fourth valve is provided at the interface of the negative pressure tank on the feed main pipe, and a fifth valve is provided at the interface of the first delivery pump on the feed main pipe.

[0012] In some embodiments, an air supply pipeline is provided on the feed branch pipeline, and an air valve and an oil-water separator located downstream of the air valve are provided on the air supply pipeline.

[0013] In some embodiments, the negative pressure tank is provided with a sixth valve for opening or closing the feed end, and a vacuum valve for connecting to the negative pressure extraction device, and the negative pressure tank is also provided with a pressure gauge and a pressure relief valve.

[0014] In some embodiments, the feeding unit further includes a stirrer and a second delivery pump, the stirrer is connected to the inlet end of the feeding branch pipeline through the second delivery pump, and the feeding branch pipeline is provided with a demagnetizing filter device.

[0015] In some embodiments, the main feed pipeline is connected to the head finished product tank and the tail finished product tank for supplying materials to the coating machine through pipelines, the lower part of the head finished product tank is connected to the third delivery pump through a pipeline, and the lower part of the tail finished product tank is connected to the fourth delivery pump through a pipeline.

[0016] In some embodiments, a seventh valve is provided on the connecting pipeline between the head finished product tank and the main supply pipeline, an eighth valve is provided on the connecting pipeline between the tail finished product tank and the main supply pipeline, and a ninth valve is provided on the main supply pipeline and is located between the seventh valve and the eighth valve.

[0017] In some embodiments, a tenth valve for opening or closing an outlet end is disposed on the main supply pipeline, and a ball receiving cup is disposed at the outlet end of the main supply pipeline.

[0018] The beneficial effects of the technical solution provided by this application include:

[0019] An embodiment of the present application provides a pipeline slurry recovery system. Since the supply branch pipeline is connected to the supply main pipeline, and the recovery unit includes a negative pressure tank connected to the supply main pipeline, the residual slurry in the supply branch pipeline and the supply main pipeline can be extracted into the negative pressure tank for reuse by creating a negative pressure in the negative pressure tank, thereby reducing the difficulty of cleaning the supply pipeline, reducing slurry scrap, and increasing product utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the structure of the recycling system provided in the embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of the negative pressure tank provided in the embodiment of the present application;

[0023] Figure 3 A schematic diagram of the connection between the air supply pipeline and the feed branch pipeline provided in an embodiment of the present application.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Main feed pipeline; 2. Branch feed pipeline; 3. Negative pressure tank; 4. First valve; 5. Second valve; 6. First delivery pump; 7. Third valve; 8. Fourth valve; 9. Fifth valve; 10. Air supply pipeline; 11. Air valve; 12. Oil-water separator; 13. Sixth valve; 14. Vacuum valve; 15. Pressure gauge; 16. Pressure relief valve; 17. Mixer; 18. Second delivery pump; 19. Demagnetization filter; 20. Head finished product tank; 21. Tail finished product tank; 22. Third delivery pump; 23. Fourth delivery pump; 24. Seventh valve; 25. Eighth valve; 26. Ninth valve; 27. Tenth valve; 28. Ball collecting cup. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] The embodiment of the present application provides a pipeline slurry recovery system, which can solve the problem in the related art that the residual slurry in the feed pipeline is difficult to utilize at the end of the production line, resulting in reduced product utilization and increased difficulty in production line cleaning.

[0028] See also Figures 1 to 3 As shown, the embodiment of the present application provides a pipeline slurry recovery system, comprising:

[0029] The main feed pipeline 1 is used to transport slurry to the finished product tank;

[0030] A feeding unit, the feeding unit comprises a feeding branch pipeline 2 connected to the feeding main pipeline 1;

[0031] The recovery unit includes a negative pressure tank 3 connected to the main supply pipeline 1, and the negative pressure tank 3 recovers the slurry in the main supply pipeline 1 and the branch supply pipeline 2 through negative pressure.

[0032] The recovery unit of the pipeline slurry recovery system of the embodiment of the present application includes a negative pressure tank 3 connected to the main supply pipeline 1. Specifically, when the production line is finished, it is necessary to recover the residual slurry in the supply branch pipeline 2 in the supply unit. The negative pressure tank 3 can be evacuated in advance and ensure a certain negative pressure state. When in use, the negative pressure tank 3 is connected to the main supply pipeline 1. Under the action of negative pressure, the negative pressure tank 3 can suck the residual slurry in the supply branch pipeline 2 and the main supply pipeline 1 into the negative pressure tank 3. The slurry in the negative pressure tank 3 can be extracted and utilized, thereby reducing the difficulty of cleaning the supply pipeline, reducing slurry scrap, and increasing product utilization.

[0033] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a pipeline slurry recovery system, in which a first valve 4 for opening or closing the inlet end is provided on the main feed pipeline 1 of the pipeline slurry recovery system, and the feed branch pipeline 2 and the negative pressure tank 3 are both located downstream of the first valve 4.

[0034] The main supply pipe 1 of the embodiment of the present application can be cleaned by pushing a ball, so a first valve 4 for opening or closing the inlet end is provided on the main supply pipe 1. The first valve 4 is kept normally closed to avoid leakage when supplying slurry and to avoid pressure relief when recovering slurry in the negative pressure tank 3. The first valve 4 can be opened when a small ball needs to be put in for pushing the ball cleaning.

[0035] It should be noted that the use of a ball-pushing cleaning method to clean the slurry conveying pipeline refers to using air pressure to push a small ball from one end of the slurry conveying pipeline to the other end to empty the pipeline slurry to complete the cleaning work.

[0036] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a pipeline slurry recovery system, in which a second valve 5 located downstream of a negative pressure tank 3 is provided on the main supply pipeline 1 of the pipeline slurry recovery system, and a first delivery pump 6 for delivering slurry to the downstream of the second valve 5 is provided between the negative pressure tank 3 and the main supply pipeline 1.

[0037] The main feed pipe 1 of the embodiment of the present application is also equipped with a second valve 5. Since the main feed pipe 1 can be emptied and cleaned by a ball-pushing cleaning method, it is mainly necessary to recover the residual slurry in the feed branch pipe 2. The first valve 4 and the second valve 5 are in a closed state to ensure the slurry recovery effect in the feed branch pipe 2. For example, when the first valve 4 and the second valve 5 remain closed, the negative pressure tank 3 is connected to the main feed pipe 1. Under the action of negative pressure, the negative pressure tank 3 can suck the residual slurry in the feed branch pipe 2 into the negative pressure tank 3, and the first valve 4 and the second valve 5 remain closed.

[0038] In addition, in this embodiment, a first delivery pump 6 for delivering slurry to the downstream of the second valve 5 is arranged between the negative pressure tank 3 and the main supply pipeline 1. The first delivery pump 6 adopts a screw pump. When the second valve 5 remains closed, the first delivery pump 6 can be used to deliver the slurry in the negative pressure tank 3 back to the main supply pipeline 1 for reuse.

[0039] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a pipeline slurry recovery system, in which a third valve 7 is provided at the outlet end of the feed branch pipe 2 of the pipeline slurry recovery system, a fourth valve 8 is provided at the interface of the negative pressure tank 3 on the feed main pipe 1, and a fifth valve 9 is provided at the interface of the first delivery pump 6 on the feed main pipe 1.

[0040] The third valve 7, the fourth valve 8 and the fifth valve 9 of the embodiment of the present application are provided to prevent the ball from getting stuck when the feeding main pipeline 1 is being cleaned by pushing the ball. Specifically, when the feeding main pipeline 1 is emptied and cleaned by pushing the ball, the third valve 7, the fourth valve 8 and the fifth valve 9 need to be closed in advance, so as to prevent the ball from getting stuck at the intersection of the pipelines when the ball is pushed by air pressure.

[0041] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a pipeline slurry recovery system, in which an air supply pipeline 10 is provided on a feed branch pipeline 2 of the pipeline slurry recovery system, and an air valve 11 and an oil-water separator 12 located downstream of the air valve 11 are provided on the air supply pipeline 10.

[0042] The air supply pipe 10 of the embodiment of the present application allows air to pass through. When the negative pressure tank 3 performs negative pressure absorption, air can enter the air supply pipe 10 to ensure that the slurry in the feed branch pipe 2 can flow into the negative pressure tank 3, thereby realizing the recovery of the slurry in the feed branch pipe 2.

[0043] Furthermore, the air valve 11 for controlling the on-off of the air supply pipeline 10 and the oil-water separator 12 located downstream of the air valve 11 can separate the oil and water in the incoming air, thereby preventing the debris in the air from being sucked into the slurry in the feed branch pipeline 2 during negative pressure recovery.

[0044] It should be noted that when the production line is finished, there is residual fluid inside the feed branch pipe 2. The present application uses negative pressure to transfer the remaining slurry in the pipe to the negative pressure tank 3 in the form of negative pressure. However, if the negative pressure is continuously drawn, there will be no air in the pipe. Without air, the liquid will not be able to flow. The air supply pipe 10 can allow gas to enter the pipe, making it convenient to recover the slurry in the pipe.

[0045] In some alternative embodiments: See Figures 1 to 3As shown, an embodiment of the present application provides a pipeline slurry recovery system, in which a sixth valve 13 for opening or closing a feed end and a vacuum valve 14 for connecting a negative pressure extraction device are provided on the negative pressure tank 3, and a pressure gauge 15 and a pressure relief valve 16 are also provided on the negative pressure tank 3.

[0046] The negative pressure tank 3 of the embodiment of the present application is equipped with a sixth valve 13 and a vacuum valve 14. When the sixth valve 13 is closed, the vacuum valve 14 can be connected to the negative pressure pumping device to evacuate the negative pressure tank 3 so that the negative pressure tank 3 can be kept in a certain negative pressure state. In addition, the negative pressure tank 3 is also equipped with a pressure gauge 15 for measuring the pressure inside the tank and a pressure relief valve 16 for limiting the pressure inside the tank to a preset pressure.

[0047] For example, when the production line is about to be finished, while the first valve 4 is ensured to be closed, the second valve 5 is closed, and the third valve 7 and the fourth valve 8 are opened. The negative pressure tank 3 uses the negative pressure extraction device to open the vacuum valve 14, creating a negative pressure state in the negative pressure tank 3 container, and the pressure gauge 15 shows -85Kpa. At this time, the sixth valve 13 is opened, and the air valve 11 is opened at the same time. The compressed air is separated from water, oil and other impurities through the oil-water separator 12 and then blown into the feed branch pipe 2. The air supply pressure of the oil-water separator 12 is adjusted to 20kpa. The residual slurry in the feed branch pipe 2 continues to flow to the negative pressure tank 3 through the negative pressure, thereby realizing the collection of the residual slurry in the feed branch pipe 2.

[0048] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a pipeline slurry recovery system, wherein the feeding unit of the pipeline slurry recovery system further includes a mixer 17 and a second delivery pump 18, the mixer 17 is connected to the inlet end of the feeding branch pipeline 2 through the second delivery pump 18, and a demagnetizing filter device 19 is provided on the feeding branch pipeline 2.

[0049] The second delivery pump 18 of the embodiment of the present application adopts a diaphragm pump, which can deliver the slurry produced in the mixer 17 to the feed branch pipe 2, and use the feed main pipe 1 to deliver it to the finished product tank for standby. In addition, a demagnetization filtration device 19 is installed on the feed branch pipe 2. The demagnetization filtration device 19 includes a demagnetizer and a filter, which can demagnetize and filter the passing slurry.

[0050] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a pipeline slurry recovery system, in which the main feed pipeline 1 of the pipeline slurry recovery system is connected to a head finished product tank 20 and a tail finished product tank 21 for feeding materials to a coating machine through pipelines, a third delivery pump 22 is connected to the lower part of the head finished product tank 20 through a pipeline, and a fourth delivery pump 23 is connected to the lower part of the tail finished product tank 21 through a pipeline.

[0051] The finished product tanks of the embodiment of the present application include a head finished product tank 20 and a tail finished product tank 21. The head finished product tank 20 and the tail finished product tank 21 are respectively connected to the main supply pipeline 1 through pipelines. The third delivery pump 22 and the fourth delivery pump 23 are screw pumps. The head finished product tank 20 supplies materials to the head coating process through the third delivery pump 22, and the tail finished product tank 21 supplies materials to the tail coating process through the fourth delivery pump 23.

[0052] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a pipeline slurry recovery system, in which a seventh valve 24 is provided on the connecting pipeline between the head finished product tank 20 and the supply main pipeline 1 of the pipeline slurry recovery system, an eighth valve 25 is provided on the connecting pipeline between the tail finished product tank 21 and the supply main pipeline 1, and a ninth valve 26 is provided on the supply main pipeline 1 and is located between the seventh valve 24 and the eighth valve 25.

[0053] When the seventh valve 24 and the eighth valve 25 of the embodiment of the present application are closed, the ball can be prevented from getting stuck when the main feeding pipeline 1 is pushing the ball for cleaning. At the same time, the seventh valve 24 and the eighth valve 25 can cooperate with the ninth valve 26 to switch the passage to realize the separate feeding of the head finished tank 20 or the tail finished tank 21.

[0054] Specifically, when the seventh valve 24 is opened and the ninth valve 26 is closed, the machine head finished product tank 20 can be fed separately; when the seventh valve 24 is closed and the eighth valve 25 and the ninth valve 26 are opened, the machine head finished product tank 20 can be fed separately.

[0055] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a pipeline slurry recovery system, in which a tenth valve 27 for opening or closing the outlet end is provided on the main supply pipeline 1 of the pipeline slurry recovery system, and a ball collecting cup 28 is provided at the outlet end of the main supply pipeline 1.

[0056] The supply main pipeline 1 of the embodiment of the present application is also equipped with a tenth valve 27, which can close the open end of the supply main pipeline 1 to ensure that the slurry is transported to the finished product tank. When the supply main pipeline 1 needs to be emptied and cleaned by pushing the ball, the tenth valve 27 can be opened and the ball collecting cup 28 installed at the outlet end of the supply main pipeline 1 can be used to recover the balls.

[0057] For example, when the main supply pipeline 1 is emptied and cleaned by pushing the ball, the third valve 7, the fourth valve 8, the fifth valve 9, the seventh valve 24 and the eighth valve 25 are closed, and the first valve 4, the second valve 5, the ninth valve 26 and the tenth valve 27 are opened, and the small ball is inserted from the inlet end of the main supply pipeline 1, and then the small ball is pushed from the inlet end to the outlet end of the main supply pipeline 1 by air pressure using external equipment. During the movement, the small ball squeezes out the pipeline slurry and finally falls into the ball collecting cup 28, thereby completing the cleaning of the main supply pipeline 1.

[0058] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0059] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0060] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A pipeline slurry recovery system, characterized in that: include: A main material supply pipeline (1), the main material supply pipeline (1) being used for conveying slurry to a finished product tank; A feeding unit, the feeding unit comprising a feeding branch pipeline (2) connected to the feeding main pipeline (1); A recovery unit, the recovery unit comprising a negative pressure tank (3) connected to the main supply pipeline (1), the negative pressure tank (3) recovers the slurry in the main supply pipeline (1) and the branch supply pipeline (2) through negative pressure.

2. The pipeline slurry recovery system according to claim 1, characterized in that: The main material supply pipeline (1) is provided with a first valve (4) for opening or closing the inlet end, and the branch material supply pipeline (2) and the negative pressure tank (3) are both located downstream of the first valve (4).

3. The pipeline slurry recovery system according to claim 1, characterized in that: The main feed pipe (1) is provided with a second valve (5) located downstream of the negative pressure tank (3), and a first delivery pump (6) for delivering slurry to the downstream of the second valve (5) is provided between the negative pressure tank (3) and the main feed pipe (1).

4. The pipeline slurry recovery system according to claim 3, characterized in that: The outlet end of the feed branch pipe (2) is provided with a third valve (7), the negative pressure tank (3) is provided with a fourth valve (8) at the interface on the feed main pipe (1), and the first delivery pump (6) is provided with a fifth valve (9) at the interface on the feed main pipe (1).

5. The pipeline slurry recovery system according to claim 1, characterized in that: The feed branch pipeline (2) is provided with an air supply pipeline (10), and the air supply pipeline (10) is provided with an air valve (11) and an oil-water separator (12) located downstream of the air valve (11).

6. The pipeline slurry recovery system according to claim 1, characterized in that: The negative pressure tank (3) is provided with a sixth valve (13) for opening or closing the feed end, and a vacuum valve (14) for connecting to the negative pressure extraction device. The negative pressure tank (3) is also provided with a pressure gauge (15) and a pressure relief valve (16).

7. The pipeline slurry recovery system according to claim 1, characterized in that: The feeding unit further comprises a stirrer (17) and a second delivery pump (18); the stirrer (17) is connected to the inlet end of the feeding branch pipeline (2) via the second delivery pump (18); and a demagnetizing filter device (19) is provided on the feeding branch pipeline (2).

8. The pipeline slurry recovery system according to claim 1, characterized in that: The main material supply pipeline (1) is connected to a head finished product tank (20) and a tail finished product tank (21) for supplying materials to the coating machine through pipelines, the lower part of the head finished product tank (20) is connected to a third delivery pump (22) through a pipeline, and the lower part of the tail finished product tank (21) is connected to a fourth delivery pump (23) through a pipeline.

9. The pipeline slurry recovery system according to claim 8, characterized in that: A seventh valve (24) is provided on the connecting pipeline between the head finished product tank (20) and the main supply pipeline (1), an eighth valve (25) is provided on the connecting pipeline between the tail finished product tank (21) and the main supply pipeline (1), and a ninth valve (26) is provided on the main supply pipeline (1) and is located between the seventh valve (24) and the eighth valve (25).

10. The pipeline slurry recovery system according to claim 1, characterized in that: The main material supply pipeline (1) is provided with a tenth valve (27) for opening or closing the outlet end, and the outlet end of the main material supply pipeline (1) is provided with a ball receiving cup (28).

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