A lithium battery NMP recovery device

Abstract

The invention discloses a lithium battery NMP recovery device, characterized in that a receiving barrel is fixedly connected to the lower end of the shell, a filter plate is arranged between the shell and the receiving barrel, a cover plate is fixedly connected to the upper end of the shell, a driving motor is fixedly connected to the middle part of the lower end of the receiving barrel, a transmission member is arranged at the output end of the driving motor, the transmission member is arranged in the middle of the inner cavity of the shell, a cleaning mechanism for scraping off impurities accumulated on the filter plate is arranged on the outer wall of the transmission member, and a guide mechanism for adjusting the position of the cleaning mechanism is arranged on the side wall of the inner cavity of the shell, when the transmission member drives the cleaning mechanism to rotate, the guide mechanism first moves the cleaning mechanism down to a position close to the filter plate, and after the cleaning mechanism rotates for one circle, the guide mechanism moves the cleaning mechanism up and separates it from the filter plate and drives it to push the impurities out of the shell. The present invention enables the NMP solution entering the inner cavity of the shell to be filtered at the first time, and a shell rotating with the rotating rod is arranged to scrape off the impurities left on the filter plate.

Description

Technical Field

[0001] The invention relates to the technical field of lithium batteries, in particular to a lithium battery NMP recovery device. Background Art

[0002] NMP is an excellent high-grade solvent, widely used in petrochemical, pharmaceutical, electronic materials, lithium battery manufacturing and other fields. The NMP-containing waste gas generated in the production process is condensed into NMP liquid. When the NMP solution is recovered and purified, it is necessary to filter the NMP solution to remove the impurities contained therein.

[0003] For example, Chinese patent publication No. CN115745222A discloses an NMP recovery and purification device and method for improving lithium battery production, including a mounting frame and a filter tank arranged above the mounting frame, the filter tank is fixed to the top of the mounting frame by supporting legs, a frame plate is fixed below the mounting frame, and a mixing sedimentation cylinder penetrating the mounting frame is fixed on the top of the frame plate.

[0004] In this scheme, the NMP solution is pumped into the device by a pump, and the push plate drives the brush to brush the impurities on the filter screen, and the impurities on the filter screen are shaken off by the vibration of the drive shaft. However, the brush cannot be cleaned for a long time, and the brush will be covered with impurities and it will be difficult to clean the filter screen. Moreover, the vibration of the drive shaft can only vibrate when NMP solution continuously enters the filter tank. When there is NMP solution in the tank body, the impurities shaken off will return to the NMP solution again. Summary of the invention

[0005] The object of the present invention is to provide a lithium battery NMP recovery device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A lithium battery NMP recovery device comprises a shell, a receiving barrel is fixedly connected to the lower end of the shell, a filter plate is arranged between the shell and the receiving barrel, a cover plate is fixedly connected to the upper end of the shell, a driving motor is fixedly connected to the middle part of the lower end of the receiving barrel, a transmission member is arranged at the output end of the driving motor, the transmission member is arranged in the middle part of the inner cavity of the shell, a cleaning mechanism for scraping impurities accumulated on the filter plate is arranged on the outer wall of the transmission member, a guide mechanism for adjusting the position of the cleaning mechanism is arranged on the side wall of the inner cavity of the shell, when the transmission member drives the cleaning mechanism to rotate, the guide mechanism first moves the cleaning mechanism downward to a position close to the filter plate, after the cleaning mechanism rotates one circle, the guide mechanism moves the cleaning mechanism upward to separate from the filter plate and drives it to push the impurities out of the shell.

[0008] As a further solution of the present invention: the transmission member includes a rotating rod, the lower end of the rotating rod passes through the filter plate and is fixedly connected to the output end of the driving motor, the upper end of the rotating rod passes through the cover plate, the rotating rod is rotatably connected to the filter plate and the cover plate, the middle part of the upper end of the rotating rod is rotatably connected to the water inlet pipe, the lower end of the rotating rod is provided with symmetrical water outlets, an extension block is fixedly connected to one side of the lower part of the outer wall of the rotating rod, a slide groove perpendicular to the filter plate is provided on the side of the extension block away from the rotating rod, the inner cavity of the slide groove is slidably connected to a connecting block, the side of the connecting block away from the rotating rod is fixedly connected to a rotating column, and the outer wall of the rotating column is provided with a cleaning mechanism.

[0009] As a further solution of the present invention: the cleaning mechanism includes a shell, the inner cavity and side walls of the shell are provided with filter screens, the outer wall of the shell is rotatably connected to the connecting block through a rotating column on the side close to the rotating rod, a top plate is fixedly connected to the upper part of the inner cavity of the shell, and a movable plate is slidably connected to the outer wall of one end of the top plate close to the connecting block, and the width of the movable plate is equal to the width of the inner cavity of the shell, and both are greater than the width of the top plate.

[0010] As a further solution of the present invention: a screw is rotatably connected to one side of the upper inner cavity of the shell, and the screw is threadably connected to the movable plate; the outer wall of the screw at one end away from the movable plate is rotatably connected to a mounting plate; the screw passes through one end of the mounting plate and is fixedly connected to a first sliding rod; the mounting plate is fixedly connected to one end away from the rotating rod; the first sliding rod and the second sliding rod are symmetrical about the center position of the rotating rod; the lower end of the mounting plate is fixedly connected to an elastic telescopic plate; a rope is fixedly connected to the bottom of the inner cavity of the elastic telescopic plate; one end of the rope away from the bottom of the inner cavity of the elastic telescopic plate passes through the mounting plate and is fixedly connected to the screw.

[0011] As a further solution of the present invention: the guide mechanism includes a symmetrical first annular plate and a second annular plate, the first annular plate and the second annular plate are both fixedly connected to the side wall of the inner cavity of the shell, an arc plate fixedly connected to the side wall of the inner cavity of the shell is arranged between the first annular plate and the second annular plate, the first annular plate and the arc plate form a first annular groove, the second annular plate and the arc plate form a second annular groove, and the first sliding rod and the second sliding rod are slidably connected to the first annular groove and the second annular groove.

[0012] As a further solution of the present invention: a conical notch penetrating the arc plate is provided on one side of the outer wall of the arc plate, a baffle fixedly connected to the side wall of the inner cavity of the shell is provided in the middle of the conical notch, the baffle is an isosceles trapezoid, the upper end of the baffle is fixedly connected to the first annular plate, the side edges of the baffle and the arc plate together form symmetrical first and second bevel grooves, the first and second bevel grooves are both connected to the first annular groove and the second annular groove, and an adjustment member for introducing the shell into the second bevel groove is provided at the intersection of the second bevel groove and the second annular groove.

[0013] As a further solution of the present invention: the adjusting member includes a groove, which is arranged at the lower end of the arc plate close to the second inclined groove, and the inner cavity of the groove is rotatably connected to a guide plate, and the upper and lower ends of the guide plate close to the groove are respectively fixedly connected to a first baffle rod and a second baffle rod, and the first baffle rod and the second baffle rod are symmetrical about the guide plate, and the guide plate, the first baffle rod and the second baffle rod are all arched, and the middle part of the inner cavity of the guide plate and the top of the inner cavity of the groove away from the guide plate are elastically connected by a spring.

[0014] As a further solution of the present invention: the second sliding rod is composed of a thin rod and a circular disc, the length of the thin rod is greater than the length of the second baffle rod located below the guide plate, the end of the thin rod away from the mounting plate is fixedly connected to the circular disc, the diameter of the circular disc is equal to the diameter of the first sliding rod and both are greater than the diameter of the thin rod.

[0015] As a further solution of the present invention: a first annular rack is fixedly connected to the bottom of one side of the first annular groove close to the second inclined groove, a gear used in conjunction with the first rack is fixedly connected to the outer wall of the first slide rod, the gear and the first rack are meshed, a receiving plate is provided below the first rack, the receiving plate is fixedly connected to the outer shell, the outer shell and the side wall of the arc plate are jointly provided with an arc groove for installing the receiving plate, the receiving plate is inclined relative to the horizontal plane where the cover plate is located, and the first annular plate is away from the second rack at the lower end of one side of the second inclined groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By arranging the transmission member and the water inlet pipe to rotate in coordination, the effect of water inlet at the center and water outlet around can be achieved, so that the NMP solution entering the inner cavity of the shell can be filtered at the first time, and a shell that rotates with the rotating rod is arranged to scrape the impurities left on the filter plate. When the impurity accumulation liquid level rises, the motor drives the rotating rod to drive the shell to rotate. When the shell enters the second annular groove through the first chute along the first annular groove, the shell with an opening inclined downward can scrape the impurities at the first time to avoid the impurities adhering to the lower end of the shell and being difficult to remove. The shell can enter the second chute through the guide plate only after the shell has completely rotated one circle. When the shell is in the second chute, the whole is "V"-shaped, which can not only prevent impurities from falling, but also facilitate the discharge of the NMP solution remaining in the shell through the filter screen. When the shell returns to the first annular groove again, the first rack and the second rack that are symmetrically arranged can drive the screw to rotate through the gear, thereby driving the moving plate to scrape the impurities in the inner cavity of the shell and automatically complete the reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the overall internal structure of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the cross section in the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the transmission member in the present invention.

[0022] Figure 5 It is a structural schematic diagram of the cleaning mechanism in the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of the elastic expansion plate in the present invention.

[0024] Figure 7 It is a schematic diagram of the positional relationship between the cleaning mechanism and the guiding mechanism in the present invention.

[0025] Figure 8 It is a structural schematic diagram of the guide mechanism in the present invention.

[0026] Fig. 9 Schematic diagram of the positions of the first rack and the second rack in the present invention.

[0027] Fig.10 It is a schematic diagram of the structure of the adjusting member in the present invention.

[0028] In the figure: 1, shell; 2, receiving barrel; 3, driving motor; 4, water inlet pipe; 5, transmission member; 51, rotating rod; 52, water outlet; 53, slide; 54, connecting block; 6, cover plate; 7, receiving plate; 8, cleaning mechanism; 81, shell; 82, top plate; 83, elastic telescopic plate; 831, rope; 84, screw; 85, moving plate; 86, gear; 87, first slide bar; 88, second slide bar; 89, Mounting plate; 9, guide mechanism; 91, arc plate; 92, first annular plate; 93, second annular plate; 94, baffle plate; 95, first annular groove; 96, second annular groove; 97, first inclined groove; 98, second inclined groove; 99, first rack; 910, second rack; 10, adjustment member; 101, groove; 102, guide plate; 103, first stop rod; 104, second stop rod; 105, spring; 11, filter plate. DETAILED DESCRIPTION

[0029] See also Figure 1-3In an embodiment of the present invention, a lithium battery NMP recovery device includes a shell 1, a receiving barrel 2 is fixedly connected to the lower end of the shell 1, a filter plate 11 is arranged between the shell 1 and the receiving barrel 2, a cover plate 6 is fixedly connected to the upper end of the shell 1, a driving motor 3 is fixedly connected to the middle part of the lower end of the receiving barrel 2, a transmission member 5 is arranged at the output end of the driving motor 3, the transmission member 5 is arranged in the middle part of the inner cavity of the shell 1, a cleaning mechanism 8 for scraping off impurities accumulated on the filter plate 11 is arranged on the outer wall of the transmission member 5, and a guide mechanism 9 for adjusting the position of the cleaning mechanism 8 is arranged on the side wall of the inner cavity of the shell 1. When the transmission member 5 drives the cleaning mechanism 8 to rotate, the guide mechanism 9 first moves the cleaning mechanism 8 down to a position close to the filter plate 11. After the cleaning mechanism 8 rotates one circle, the guide mechanism 9 moves the cleaning mechanism 8 up to separate from the filter plate 11 and drives it to push the impurities out of the shell 1.

[0030] See also Figure 4 The transmission member 5 includes a rotating rod 51, the lower end of the rotating rod 51 passes through the filter plate 11 and is fixedly connected to the output end of the driving motor 3, the upper end of the rotating rod 51 passes through the cover plate 6, the rotating rod 51 is rotatably connected to the filter plate 11 and the cover plate 6, the middle part of the upper end of the rotating rod 51 is rotatably connected to the water inlet pipe 4, and the lower end of the rotating rod 51 is provided with a symmetrical water outlet 52. The NMP solution is injected from the center of the shell 1 to the bottom of the inner cavity of the shell 1 through the cooperation of the water inlet pipe 4 and the rotating rod 51, and then spreads from the filter plate 11 to the surroundings along the water outlet 52. Since the cross-sectional area of ​​the water inlet pipe 4 is smaller than the cross-sectional area of ​​the filter plate 11, the water entering the shell can be The NMP solution in the inner cavity of 81 can be filtered at the first time, avoiding excessive flow of NMP solution into the inner cavity of the shell 1, which causes impurities to move around with the water flow and be difficult to settle, and can make the filter residue more evenly distributed on the filter plate 11. An extension block is fixedly connected to one side of the lower part of the outer wall of the rotating rod 51, and a slide groove 53 perpendicular to the filter plate 11 is provided on the side of the extension block away from the rotating rod 51. The inner cavity of the slide groove 53 is slidably connected to a connecting block 54, and the connecting block 54 can be vertically slidably matched with the rotating column through the extension block. The side of the connecting block 54 away from the rotating rod 51 is fixedly connected to the rotating column, and a cleaning mechanism 8 is provided on the outer wall of the rotating column.

[0031] See also Figure 5-7The cleaning mechanism 8 includes a shell 81, and the inner cavity and side walls of the shell 81 are both provided with filter screens. The outer wall of the shell 81 is rotatably connected to the connecting block 54 on one side near the rotating rod 51 through a rotating column. The upper part of the inner cavity of the shell 81 is fixedly connected with a top plate 82, and the outer wall of one end of the top plate 82 near the connecting block 54 is slidably connected with a movable plate 85. The width of the movable plate 85 is equal to the width of the inner cavity of the shell 81, and both are greater than the width of the top plate 82, that is, the movable plate 85 can slide along the top plate 82 to clean the impurities accumulated at the bottom of the inner cavity of the shell 81, and a screw rod 84 is rotatably connected to one side of the upper part of the inner cavity of the shell 81, and the screw 84 is threadedly connected to the movable plate 85, that is, the rotation of the screw 84 will drive the movable plate 85 to reciprocate in the inner cavity of the shell 81, and the outer wall of the end of the screw 84 away from the movable plate 85 is rotatably connected with a mounting plate 89, and one end of the screw 84 passing through the mounting plate 89 is fixedly connected with a first sliding rod 87, and the end of the mounting plate 89 away from the rotating rod 51 is fixedly connected with a second The sliding bar 88, the first sliding bar 87 and the second sliding bar 88 are symmetrical about the center position of the rotating rod 51. The lower end of the mounting plate 89 is fixedly connected to an elastic expansion plate 83, and the bottom of the inner cavity of the elastic expansion plate 83 is fixedly connected to a rope 831. The end of the rope 831 away from the bottom of the inner cavity of the elastic expansion plate 83 passes through the mounting plate 89 and is fixedly connected to the screw 84. That is, when the screw 84 rotates, on the one hand, it will drive the movable plate 85 to move along the top plate 82 in the direction gradually away from the rotating rod 51, and on the other hand, it will continuously wrap the rope 831 around the outer wall, so as to shrink the elastic expansion plate 83, thereby generating a gap between the shell 81 and the side wall of the shell 1, and then the movable plate 85 can push out the impurities accumulated at the bottom of the inner cavity of the shell 81 from the retracted end of the elastic expansion plate 83, thereby completing the cleaning of the shell 81, avoiding that the impurities are scraped off from the filter plate 11 and accumulated in the inner cavity of the shell 81. It is difficult to discharge it outside the device, which affects the subsequent impurity scraping process.

[0032] See also Figure 8-9The guide mechanism 9 includes a symmetrical first annular plate 92 and a second annular plate 93, both of which are fixedly connected to the side wall of the inner cavity of the shell 1. An arc plate 91 fixedly connected to the side wall of the inner cavity of the shell 1 is arranged between the first annular plate 92 and the second annular plate 93. The distances between the top and bottom ends of the arc plate 91 and the first annular plate 92 and the second annular plate 93 are equal, that is, the vertical heights of the first annular groove 95 composed of the first annular plate 92 and the arc plate 91 and the second annular groove 96 composed of the second annular plate 93 and the arc plate 91 are equal, and the first sliding rod 87 and the second sliding rod 88 are slidably connected to the first annular groove 95 and the second annular groove 96. By arranging the symmetrical first sliding rod 87 and the second sliding rod 88, the shell 81 can be moved in the first annular groove 95 and the second annular groove 96. No rotation occurs during sliding, thereby ensuring that the shell 81 remains stable and does not rotate during the process of scraping and discharging impurities, so that the impurities on the filter plate 11 can be scraped off as much as possible during the scraping process, and the impurities will not fall back onto the filter plate 11 due to the tilt of the shell 81 during the discharge process. The first annular groove 95 is located above the second annular groove 96, and when the scraping operation is not performed, the first slide bar 87 and the second slide bar 88 are located in the first annular groove 95, that is, at this time the shell 81 is located above the filter plate 11 and does not contact the filter plate 11, thereby avoiding the shell 81 being closely attached to the filter plate 11, thereby reducing the water flow rate of the filter plate 11, and further reducing the filtration rate of the NMP solution.

[0033] A conical notch penetrating the arc plate 91 is provided on one side of the outer wall of the arc plate 91, and a baffle 94 fixedly connected to the side wall of the inner cavity of the shell 1 is provided in the middle of the notch of the arc plate 91. The baffle 94 is an isosceles trapezoid. The upper end of the baffle 94 is fixedly connected to the first annular plate 92, and the length of the upper end is greater than the length of the lower end. The side of the baffle 94 and the arc plate 91 together form a symmetrical first inclined groove 97 and a second inclined groove 98. The first inclined groove 97 and the second inclined groove 98 are used to connect the first annular groove 95 and the second annular groove 96, so that the shell 81 can travel back and forth between the first annular groove 95 and the second annular groove 96 through the first sliding rod 87 and the second sliding rod 88, thereby realizing that the shell 81 enters the second annular groove 96 from the first annular groove 95 through the first inclined groove 97 when scraping impurities, and the second sliding rod 88 will enter the first inclined groove 97 before the first sliding rod 87, that is, when the first After the second slide bar 88 and the first slide bar 87 enter the inclined groove, the shell 81 will tilt, and the side of the shell 81 away from the first slide bar 87 will first contact the filter plate 11, that is, the opening of the shell 81 will first contact the filter plate 11, so that the shell 81 can start to scrape the filter plate 11 when it is tilted, thereby avoiding the bottom of the shell 81 directly contacting the filter plate 11, which causes some impurities to adhere to the bottom of the shell 81 and be difficult to remove, and rotate one circle in the second annular groove 96 to achieve comprehensive scraping of the filter plate 11. Since the shell 81 enters the second annular groove 96 through the first inclined groove 97 and needs to return to the first annular groove 95 through the second inclined groove 98, but in order to avoid the shell 81 from entering the second inclined groove 98 too early, an adjustment member 10 for introducing the shell 81 into the second inclined groove 98 is particularly provided at the intersection of the second inclined groove 98 and the second annular groove 96.

[0034] See also Fig.10The adjusting member 10 includes a groove 101, which is arranged at the lower end of the arc plate 91 near the second inclined groove 98. The inner cavity of the groove 101 is rotatably connected to a guide plate 102. The upper and lower ends of the guide plate 102 near the groove 101 are fixedly connected to a first baffle 103 and a second baffle 104. The first baffle 103 and the second baffle 104 are symmetrical about the guide plate 102. The guide plate 102, the first baffle 103 and the second baffle 104 are all arched. The middle of the inner cavity of the guide plate 102 and the top of the inner cavity of the groove 101 away from the guide plate 102 are elastically connected by a spring 105. The first baffle 103 and the second baffle 104 are arched so that they do not contact the spring 105 when the spring 105 pulls the guide plate 102. Without affecting the pulling force applied by the spring 105 to the guide plate 102, when the guide plate 102 is only subjected to the pulling force of the spring 105, it will remain in a horizontal state, while the first blocking rod 103 and the second blocking rod 104 are perpendicular to the guide plate 102. When the first sliding rod 87 and the second sliding rod 88 move in the second annular groove 96, since the second sliding rod 88 is composed of a thin rod and a disk, wherein the length of the thin rod is greater than the length of the second blocking rod 104 located below the guide plate 102, the end of the thin rod away from the mounting plate 89 is fixedly connected to the disk, and the diameter of the disk is equal to the diameter of the first sliding rod 87, and both are greater than the diameter of the thin rod, that is, when the second sliding rod 88 slides under the second blocking rod 104, the thin rod will not contact the second blocking rod 104, thereby avoiding the guide When the first slide bar 87 passes by, the first slide bar 87 contacts the second stop bar 104 and drives the guide plate 102 to rotate counterclockwise, thereby changing the guide plate 102 from a horizontal state to an inclined state, and the angle formed by the end thereof and the upper end surface of the second annular groove 96 is greater than the angle formed by the second inclined groove 98 and the upper end surface of the second annular groove 96. At this time, the tension of the spring 105 will tighten the guide plate 102 in the direction away from the second inclined groove 98, thereby making the guide plate 102 unable to reset, and the first slide bar 87 is used as a trigger point to drive the guide plate 102 to rotate. When the guide plate 102 completes the tilting, the housing 81 has completely slid past the end of the second slide groove 53, and the guide plate 102 after rotating is 02 will not affect the movement of the shell 81, and when the shell 81 slides under the guide plate 102 for the first time, it drives the guide plate 102 to rotate counterclockwise, and when the shell 81 rotates to the position of the guide plate 102 again, the already inclined guide plate 102 will guide the shell 81 into the second inclined groove 98 by cooperating with the second slide bar 88 and the first slide bar 87, and when the first slide bar 87 and the first blocking bar 103 contact, the guide plate 102 is driven to rotate to the initial horizontal position again, thereby contacting the guide plate 102 to block the second annular groove 96, and the design of the disc and the thin rod can prevent the guide plate 102 from being triggered by the second slide bar 88 to cause the guide plate 102 to rotate prematurely, thereby affecting the movement state of the shell 81.When the housing 81 cooperates with the first slide bar 87, the housing 81 can move more smoothly.

[0035] When the shell 81 moves in the second chute 98, the shell 81 is in a "V" shape as a whole, which prevents impurities from falling out of the inner cavity of the shell 81 during the rising process, and can also promote the leakage of a small amount of NMP solution remaining in the inner cavity of the shell 81 from the filter screen when scraping off the impurities. When the shell 81 moves to the first annular groove 95, the bottom of the first annular groove 95 close to the second chute 98 is fixedly connected to the bottom of the first annular groove 95. The outer wall of the first slide bar 87 is fixedly connected to a gear 86 used in conjunction with the first rack 99. The gear 86 and the first rack 99 are meshed. The gear 86 is driven by the rack to rotate, thereby driving the screw 84 to rotate clockwise, thereby driving the movable plate 85 to move in the direction of the first slide bar 87 and contracting the elastic expansion plate 83 by winding the rope 831 to push the impurities out of the shell 81, and a receiving plate 7 is arranged under the first rack 99, and the receiving plate 7 is fixedly connected to the shell 1, and the shell 1 and the side wall of the arc plate 91 are jointly provided with an arc groove for installing the receiving plate 7, and the receiving plate 7 is inclined relative to the horizontal plane where the cover plate 6 is located, so that the impurities pushed out of the inner cavity of the shell 81 are moved out of the inner cavity of the shell 1 through the receiving plate 7, and the receiving plate 7 is connected to the outer shell 1. The lower part of one end of the material plate 7 extending out of the shell 81 is provided with a receiving box (not shown in the figure) for holding impurities. When the shell 81 slides over the first rack 99 away from the end of the second chute 98, the gear 86 will mesh with the second rack 910 provided at the lower end of the first annular plate 92. The second rack 910 will drive the screw 84 to rotate counterclockwise through the gear 86 to reset the movable plate 85 and the elastic expansion plate 83. A liquid level sensor is provided on the side wall of the inner cavity of the shell 1. As the impurities increase during the filtration process, the amount of water flowing through the filter plate 11 will decrease. When the liquid level reaches the set threshold, the sensor will turn on the switch of the drive motor 3, thereby driving the rotating rod 51 to drive the shell 81 to rotate, and then the impurities on the filter plate 11 are cleaned. After the impurities are cleaned, the liquid level drops, and the drive motor 3 is turned off. There is no need to worry that the liquid level will continue to rise and exceed the height of the receiving plate 7 and leak out of the shell 1 from the arc groove. This goes back and forth, and there is no need to manually clean the filter plate 11. At the same time, the filter plate 11 can be cleaned during the filtration process and impurities can be automatically discharged.

Claims

1. A lithium battery NMP recovery device, comprising a housing, characterized in that: The lower end of the shell is fixedly connected with a receiving barrel, a filter plate is arranged between the shell and the receiving barrel, the upper end of the shell is fixedly connected with a cover plate, the middle part of the lower end of the receiving barrel is fixedly connected with a driving motor, the output end of the driving motor is provided with a transmission member, the transmission member is arranged in the middle part of the inner cavity of the shell, the outer wall of the transmission member is provided with a cleaning mechanism for scraping off impurities accumulated on the filter plate, the side wall of the inner cavity of the shell is provided with a guide mechanism for adjusting the position of the cleaning mechanism, when the transmission member drives the cleaning mechanism to rotate, the guide mechanism first moves the cleaning mechanism down to a position close to the filter plate, after the cleaning mechanism rotates one circle, the guide mechanism moves the cleaning mechanism up to separate from the filter plate and drives it to push the impurities out of the shell; The cleaning mechanism includes a shell, the inner cavity and the side wall of the shell are provided with a filter screen, the guide mechanism includes a symmetrical first annular plate and a second annular plate, an arc plate fixedly connected to the side wall of the inner cavity of the shell is provided between the first annular plate and the second annular plate, the first annular plate and the arc plate form a first annular groove, and the second annular plate and the arc plate form a second annular groove; A conical notch penetrating the arc plate is provided on one side of the outer wall of the arc plate, a baffle fixedly connected to the side wall of the inner cavity of the shell is provided in the middle of the conical notch, the side edge of the baffle and the arc plate together form a symmetrical first oblique groove and a second oblique groove, the first oblique groove and the second oblique groove are both connected to the first annular groove and the second annular groove, and an adjusting member for introducing the shell into the second oblique groove is provided at the intersection of the second oblique groove and the second annular groove.

2. A lithium battery NMP recovery device according to claim 1, characterized in that, The transmission member includes a rotating rod, the lower end of which passes through the filter plate and is fixedly connected to the output end of the driving motor, the upper end of the rotating rod passes through the cover plate, the rotating rod is rotatably connected to the filter plate and the cover plate, the middle part of the upper end of the rotating rod is rotatably connected to the water inlet pipe, the lower end of the rotating rod is provided with a symmetrical water outlet, an extension block is fixedly connected to one side of the lower part of the outer wall of the rotating rod, a slide groove perpendicular to the filter plate is provided on the side of the extension block away from the rotating rod, a connecting block is slidably connected to the inner cavity of the slide groove, a rotating column is fixedly connected to the side of the connecting block away from the rotating rod, and a cleaning mechanism is provided on the outer wall of the rotating column.

3. A lithium battery NMP recovery device according to claim 1, characterized in that, The outer wall of the shell is rotatably connected to the connecting block through a rotating column on one side close to the rotating rod, a top plate is fixedly connected to the upper part of the inner cavity of the shell, and a movable plate is slidably connected to the outer wall of one end of the top plate close to the connecting block, and the width of the movable plate is equal to the width of the inner cavity of the shell, and both are greater than the width of the top plate.

4. A lithium battery NMP recovery device according to claim 3, characterized in that, The cam is connected to the movable plate by a screw rod, and the movable plate is connected to the movable plate by a screw rod. The outer wall of the screw rod away from the movable plate is connected to the mounting plate by a screw rod. The screw rod passes through the mounting plate and is fixedly connected to the first sliding rod at one end. The mounting plate is fixedly connected to the second sliding rod at one end away from the rotating rod. The first sliding rod and the second sliding rod are symmetrical about the center position of the rotating rod. The lower end of the mounting plate is fixedly connected to the elastic expansion plate. The bottom of the inner cavity of the elastic expansion plate is fixedly connected to a rope. The end of the rope away from the bottom of the inner cavity of the elastic expansion plate passes through the mounting plate and is fixedly connected to the screw rod.

5. A lithium battery NMP recovery device according to claim 4, characterized in that, The first annular plate and the second annular plate are both fixedly connected to the side wall of the inner cavity of the shell, and the first sliding rod and the second sliding rod are slidably connected to the first annular groove and the second annular groove.

6. A lithium battery NMP recovery device according to claim 5, characterized in that, The baffle is an isosceles trapezoid, and the upper end of the baffle is fixedly connected to the first annular plate.

7. A lithium battery NMP recovery device according to claim 6, characterized in that, The adjusting member includes a groove, which is arranged at the lower end of the arc plate close to the second inclined groove. The inner cavity of the groove is rotatably connected to a guide plate. The upper and lower ends of the guide plate close to the groove are respectively fixedly connected to a first baffle rod and a second baffle rod. The first baffle rod and the second baffle rod are symmetrical about the guide plate. The guide plate, the first baffle rod and the second baffle rod are all arched. The middle part of the inner cavity of the guide plate and the top of the inner cavity of the groove away from the guide plate are elastically connected by a spring.

8. A lithium battery NMP recovery device according to claim 7, characterized in that, The second sliding rod is composed of a thin rod and a disc. The length of the thin rod is greater than the length of the second baffle rod located below the guide plate. One end of the thin rod away from the mounting plate is fixedly connected to the disc. The diameter of the disc is equal to the diameter of the first sliding rod and both are greater than the diameter of the thin rod.

9. A lithium battery NMP recovery device according to claim 5, characterized in that, A first annular rack is fixedly connected to the bottom of one side of the first annular groove close to the second inclined groove, and a gear used in conjunction with the first rack is fixedly connected to the outer wall of the first slide rod, and the gear is meshed with the first rack. A receiving plate is provided below the first rack, and the receiving plate is fixedly connected to the outer shell. The outer shell and the side wall of the arc plate are jointly provided with an arc groove for installing the receiving plate, and the receiving plate is inclined relative to the horizontal plane where the cover plate is located, and the first annular plate is away from the second rack at the lower end of one side of the second inclined groove.

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