Production and preparation device and preparation method of carbon nanotube conductive slurry with stable viscosity

Abstract

The invention relates to the technical field of conductive slurry preparation, in particular to a stable-viscosity carbon nanotube conductive slurry production and preparation device and a preparation method thereof.The stable-viscosity carbon nanotube conductive slurry production and preparation device comprises an outer cylinder, and a rotating cylinder rotationally connected with the outer cylinder is arranged in an inner cavity of the outer cylinder from bottom to top in a penetrating mode; stirring blades are fixed on the surface of the arc-shaped plate; the annular plate movably sleeves the outer side of the upper end of the rotary drum and is fixedly connected with the upper end of the arc-shaped plate, and the arc-shaped plate and the annular plate move up and down and drive the control valve plate to move up and down so as to control opening and closing of the feeding port; the device has the beneficial effects that the flow guide frame is fixed to the inner side wall of the rotary drum, the arc-shaped plate is vertically and slidably mounted on the outer side of the rotary drum, the spiral stirring blades are fixed to the surface of the arc-shaped plate, and the discharge notches are formed in the arc-shaped plate in a penetrating manner, so that different reactive forces are generated on the stirring blades by utilizing different viscosities of slurry, and the arc-shaped plate is driven to vertically move; filling of materials or fluid matrixes is automatically controlled, and it is guaranteed that the viscosity of the prepared slurry meets the requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of conductive slurry preparation, in particular to a device for producing carbon nanotube conductive slurry with stable viscosity and a preparation method thereof. Background Art

[0002] Carbon nanotubes have the following advantages:

[0003] 1. Good electronic conductivity, the fibrous structure can form a continuous conductive network in the electrode active material;

[0004] 2. After adding carbon nanotubes, the electrode has higher toughness, which can improve the peeling caused by the volume change of the material during charging and discharging, and improve the cycle life;

[0005] 3. Greatly improve the penetration ability of electrolyte in electrode materials, and are mostly used in positive / negative electrode materials of lithium-ion batteries.

[0006] In the prior art, Chinese Utility Model No. CN222076511U discloses a conductive slurry dispersing and stirring machine for dispersing, stirring and mixing raw materials for preparing the conductive slurry.

[0007] However, the preparation of conductive slurries requires high viscosity stability. If the slurry viscosity does not meet the standard after stirring, manual replenishment of material powder or fluid matrix and remixing are required, which prolongs the slurry preparation cycle and makes the viscosity of the prepared slurry difficult to control. To address this problem, the present invention provides a device and method for producing a conductive carbon nanotube slurry with stable viscosity to address the above-mentioned issues. Summary of the Invention

[0008] The object of the present invention is to provide a device and method for producing a carbon nanotube conductive slurry with stable viscosity, so as to solve the problem in the background art that the viscosity of the prepared slurry is difficult to automatically control.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for producing and preparing a carbon nanotube conductive slurry with stable viscosity, comprising:

[0010] An outer cylinder, wherein the inner cavity of the outer cylinder is penetrated from bottom to top by a rotating cylinder connected thereto in rotation, and a guide frame is fixedly provided on the inner side wall of the rotating cylinder, and one end opening of the guide frame penetrates the surface of the rotating cylinder;

[0011] An arc-shaped plate is vertically slidably mounted on the surface of the drum, a stirring blade is fixed on the surface of the arc-shaped plate, and the stirring blade is in the shape of a half spiral, and a discharge slot corresponding to the guide frame is opened through the surface of the arc-shaped plate;

[0012] The annular plate is movably sleeved on the outer side of the upper end of the rotary drum and fixedly connected to the upper end of the arc-shaped plate. A control valve plate is arranged on the outer side of the annular plate. A feed inlet is penetratingly opened on the side wall of the outer cylinder, and the feed inlet is communicated with the feeding box. The control valve plate covers the feeding port between the feeding box and the outer cylinder. The arc-shaped plate and the annular plate move up and down to drive the control valve plate to move up and down, thereby controlling the opening and closing of the feeding port.

[0013] Preferably, there are two feeding boxes, namely a powder material box and a fluid matrix box respectively. The control valve plate is fitted to the outer side wall of the outer cylinder. A connecting plate is fixedly arranged on the inner side wall of the control valve plate. A avoiding slot for the up-and-down sliding of the connecting plate is penetratingly opened on the side wall of the outer cylinder.

[0014] Preferably, a plurality of equally spaced weight-reducing grooves are penetratingly opened on the surface of the connecting plate. One end of the connecting plate is fixedly provided with a connecting clamping plate, and the cross section of the connecting clamping plate is in a "C" shape. The connecting clamping plate is integrally arc-shaped and concentric with the annular plate. The connecting clamping plate is movably clamped on the outer side of the annular plate.

[0015] Preferably, a rolling body is movably embedded in the inner side wall of one connecting clamping plate. Vibration rings are fixedly arranged on the upper and lower surfaces of the annular plate. The vibration rings are annular and the surfaces are wave-shaped. One connecting clamping plate is clamped on the outer side of the vibration ring and the surface of the vibration ring is resisted by the rolling body.

[0016] Preferably, a vertical guiding sliding groove is penetratingly opened on the surface of the rotary drum. A connecting column is fixedly arranged on the inner side wall of the arc-shaped plate, and the connecting column penetrates through the guiding sliding groove. One end of the connecting column is fixedly provided with a connecting frame, and the connecting frame is fitted to the inner side wall of the rotary drum. An upper sealing plate is fixedly arranged at the upper end of the rotary drum, and a damper is fixedly arranged on the surface of the upper sealing plate. A convex plate is fixedly arranged at the upper end of the connecting frame. The movable end of the damper penetrates through the upper sealing plate and is fixedly connected to the convex plate.

[0017] Preferably, a hollow cylinder is penetratingly arranged in the inner cavity of the rotary drum. A lower sealing plate is fixedly arranged at the lower end of the rotary drum. Both the upper sealing plate and the upper sealing plate are fixedly connected to the hollow cylinder. The other end opening of the diversion frame penetrates through the hollow cylinder and is fixedly connected to the hollow cylinder. A vertical plate is fixedly arranged on the inner side wall of the hollow cylinder, and the vertical plate and the diversion frame are mutually offset in the circumferential direction of the hollow cylinder. A vertical groove is opened on the inner side wall of the vertical plate. A fixed column is inserted into the inner cavity of the hollow cylinder from bottom to top, and there is a gap between the fixed column and the hollow cylinder. A spiral blade is fixedly arranged on the surface of the fixed column, and the lower end of the fixed column is fixed.

[0018] Preferably, the top of the outer cylinder is covered with a cover plate, the top of the hollow cylinder is movably connected to the cover plate, a group of two limiting rings are fixed to the outer side wall of the top of the hollow cylinder, and the two limiting rings are respectively fitted with the upper and lower surfaces of the cover plate, a vent hole is opened through the top of the hollow cylinder, a fixed shaft is fixed through the center of the top of the hollow cylinder, the lower end of the fixed shaft is movably inserted into the upper end of the fixed column, and the upper end of the fixed shaft is fixed with a driving pulley.

[0019] Preferably, the damper includes a sealing cylinder fixed to the upper surface of the upper sealing plate, the inner cavity of the sealing cylinder is movably provided with a sealing plug adapted thereto, a piston rod is fixed to the surface of the sealing plug, the lower end of the piston rod movably passes through the upper sealing plate and is fixedly connected to the convex plate, and the inner cavity of the sealing cylinder is provided with a compression spring for pressing the sealing plug downward.

[0020] Preferably, the inner cavity of the piston rod is provided with an exchange chamber, the surface of the sealing plug is penetrated by a damping hole connected to the exchange chamber, an adjustment plate is movably provided at the upper end of the inner cavity of the sealing cylinder, the upper end of the compression spring is against the adjustment plate, an adjusting screw is rotatably installed on the upper surface of the adjustment plate, the adjusting screw penetrates the top of the sealing cylinder through a thread, a through hole corresponding to the damper is penetrated on the surface of the cover plate, and the through hole is covered by a sealing cover, a plurality of vertical ribs distributed in a ring array are fixed to the inner wall of the outer cylinder, and the cross-section of the vertical ribs is arc-shaped.

[0021] A method for producing a carbon nanotube conductive slurry with stable viscosity, using the above-mentioned preparation device, specifically comprises the following steps:

[0022] Step 1: The drum rotates in the inner cavity of the outer drum and drives the arc plate and the stirring blade to rotate accordingly. The stirring blade stirs the slurry in the inner cavity of the outer drum. The slurry generates an upward reaction force on the stirring blade to offset the gravity of the arc plate and the annular plate;

[0023] Step 2: When the slurry viscosity reaches the standard, the stirring blade moves upward due to the reaction force, and the discharge slot and the guide frame are just in a connected state, and the slurry can be discharged through the guide frame;

[0024] Step 3: When the slurry viscosity does not meet the standard, it is divided into the following two situations:

[0025] ① The viscosity of the slurry is low. At this time, the reaction force on the stirring blade is small. The downward movement of the arc plate causes the discharge slot and the guide frame to be misaligned, and the slurry cannot be discharged. At the same time, the downward movement of the annular plate drives the control valve plate to move downward. The control valve plate opens the feeding port and the powder material in the feeding box is automatically added to the inner cavity of the outer cylinder to increase the slurry viscosity.

[0026] ② The viscosity of the slurry is relatively high. At this time, the reaction force on the stirring blade is relatively large. The upward movement of the arc plate causes the discharge slot to pass over the guide frame and become dislocated, making it impossible for the slurry to be discharged. At the same time, the upward movement of the annular plate drives the upward movement of the control valve plate. The control valve plate opens another feeding port, and the fluid matrix in the feeding box is automatically added to the inner cavity of the outer cylinder to reduce the slurry viscosity until the slurry viscosity meets the standard.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention is characterized in that a guide frame is fixed on the inner side wall of the rotating drum, and an arc plate is vertically slidably installed on the outer side of the rotating drum. A spiral stirring blade is fixed on the surface of the arc plate, and a discharge slot is opened through it. When the rotating drum rotates, the arc plate and the stirring blade are driven to rotate accordingly and the slurry is stirred. The stirring blade is driven by the reaction force of the slurry to drive the arc plate to slide vertically on the outer side of the rotating drum. When the slurry viscosity meets the standard, the discharge slot moves to coincide with the guide frame, and the slurry can automatically flow into the inner cavity of the rotating drum and be discharged. On the contrary, when the slurry viscosity does not meet the standard, the discharge slot and the guide frame are moved to coincide with each other. The arc plate is misaligned, and the material powder or fluid matrix is ​​automatically added to the inner cavity of the outer cylinder through the control valve plate until the slurry viscosity meets the standard and is automatically discharged. This device uses the different viscosities of the slurry to generate different reaction forces on the stirring blades, thereby driving the arc plate to move vertically to different positions. By controlling the connection between the discharge slot and the guide frame, the slurry is discharged or not, and the addition of material or fluid matrix is ​​automatically controlled according to the different height positions of the arc plate, thereby ensuring that the viscosity of the prepared slurry meets the requirements and shortening the preparation cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the interior of the outer cylinder structure of the present invention;

[0032] Figure 4 This is a three-dimensional schematic diagram of the control valve plate structure of the present invention;

[0033] Figure 5 This is a schematic diagram of the connection between the arc plate and the annular plate structure of the present invention;

[0034] Figure 6 This is an exploded schematic diagram of the curved plate structure of the present invention;

[0035] Figure 7 This is an exploded schematic diagram of the curved plate and drum structure of the present invention;

[0036] Figure 8 It is a partially cutaway schematic diagram of the drum structure of the present invention;

[0037] Figure 9 This is a schematic diagram of the internal structure of the drum of the present invention;

[0038] Figure 10 Schematic diagram of the internal structure of the damper of the present invention.

[0039] In the figure: 1. outer cylinder; 11. vertical ribs; 12. avoidance notch; 13. feed port; 14. cover plate; 15. cover; 2. rotating cylinder; 21. guide frame; 22. guide chute; 23. upper cover plate; 231. lower cover plate; 3. hollow cylinder; 31. vertical plate; 32. retaining ring; 33. limit ring; 34. vent; 35. fixed shaft; 36. driving pulley; 4. fixed column; 41. spiral blade; 5. curved plate; 51. stirring blade; 52. discharge Material trough mouth; 53, connecting frame; 531, convex plate; 54, connecting column; 6, annular plate; 61, vibration ring; 7, damper; 71, sealing cylinder; 72, sealing plug; 721, damping hole; 73, piston rod; 731, exchange bin; 74, compression spring; 75, adjusting plate; 76, adjusting screw; 8, powder material box; 81, fluid matrix box; 9, control valve plate; 91, connecting plate; 92, connecting clamping plate; 93, rolling element; 94, weight reduction groove. DETAILED DESCRIPTION

[0040] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] See also Figures 1 to 10 , the present invention provides a technical solution:

[0042] Embodiment 1, a device for producing and preparing carbon nanotube conductive slurry with stable viscosity, includes: an outer cylinder 1 , an arc-shaped plate 5 and an annular plate 6 .

[0043] Specifically, a rotating drum 2 is provided in the inner cavity of the outer cylinder 1 from bottom to top and is rotatably connected thereto. The rotating drum 2 is rotatably sealed against the bottom plate of the outer cylinder 1, and the lower end of the rotating drum 2 extends to the outside of the bottom plate of the outer cylinder 1. A guide frame 21 is fixedly provided on the inner side wall of the rotating drum 2, and one end of the guide frame 21 is opened and passes through the surface of the rotating drum 2. After the slurry in the inner cavity of the outer cylinder 1 is stirred evenly and meets the standards, it can pass through the guide frame 21 into the inner cavity of the rotating drum 2 and be discharged to the outside of the outer cylinder 1.

[0044] Secondly, the curved plate 5 is vertically slidably installed on the surface of the drum 2. When the drum 2 rotates, it can drive the curved plate 5 to rotate accordingly. At the same time, the curved plate 5 can also slide up and down on the surface of the drum 2. A stirring blade 51 is fixed on the surface of the curved plate 5, and the stirring blade 51 is in a semi-spiral shape. When the curved plate 5 and the stirring blade 51 rotate with the drum 2, the stirring blade 51 can stir and mix the slurry in the inner cavity of the outer cylinder 1. At the same time, the reaction force generated by the slurry on the stirring blade 51 will push the stirring blade 51 and the curved plate 5 to move upward. However, when the reaction force on the stirring blade 51 is small and insufficient to offset the overall gravity of the curved plate 5, the curved plate 5 can only slide downward along the surface of the drum 2 to the lowest point of the stroke. On the contrary, when the reaction force on the stirring blade 51 is large and completely sufficient to offset the overall gravity of the curved plate 5, the curved plate 5 will slide upward along the surface of the drum 2 to the highest point of the stroke, and the slurry on the stirring blade 51 The magnitude of the reaction force generated mainly depends on two points: one is the rotation speed of the stirring blade 51, and the other is the viscosity of the slurry. By controlling the rotation speed of the drum 2 to be constant, the up and down sliding of the arc plate 5 can be controlled to be affected only by the viscosity of the slurry. Under this condition, a discharge slot 52 corresponding to the guide frame 21 is opened through the surface of the arc plate 5. When the viscosity of the slurry is relatively low, the discharge slot 52 moves downward and is misaligned with the guide frame 21. When the viscosity of the slurry is relatively high, the discharge slot 52 moves upward and is misaligned with the guide frame 21. Therefore, in the above two cases, the slurry will not be discharged automatically. Only when the slurry viscosity reaches a specified range value, the discharge slot 52 moves to completely or partially correspond to the guide frame 21, and the slurry can be discharged from the inner cavity of the guide frame 21. In other words, the present device can control the viscosity of the slurry discharged from the lower end of the drum 2 by controlling the rotation speed of the drum 2. When the rotation speed of the drum 2 is constant, the viscosity of the slurry discharged from the lower end of the drum 2 is constant.

[0045] Furthermore, the annular plate 6 is movably sleeved on the outer side of the upper end of the rotating drum 2 and fixedly connected to the upper end of the curved plate 5. A plurality of curved plates 5 of the device are provided and distributed in an annular array around the rotating drum 2. The annular plate 6 is used to fix the plurality of curved plates 5 together. The annular plate 6 moves vertically synchronously with the plurality of curved plates 5. A control valve plate 9 is provided on the outer side of the annular plate 6. A feed port 13 is opened through the side wall of the outer cylinder 1, and the feed port 13 is connected to the feeding box. The control valve plate 9 covers the feeding port between the feeding box and the outer cylinder 1. The curved plate 5 and the annular plate 6 move up and down and drive the control valve plate 9 to move up and down, thereby controlling the opening and closing of the feeding port. When the control valve plate 9 moves up, the control valve plate 9 opens the feeding port, and the fluid matrix is ​​automatically added to the inner cavity of the outer cylinder 1 to reduce the slurry viscosity. When the control valve plate 9 moves down, the control valve plate 9 opens the feeding port, and the powder material is automatically added to the inner cavity of the outer cylinder 1 to increase the slurry viscosity until the slurry viscosity meets the standard.

[0046] In order to store the powder material and the fluid matrix separately, the feeding box of the present application is provided with two boxes, namely the powder material box 8 and the fluid matrix box 81. A certain amount of powder material and fluid matrix are pre-stored in the inner cavities of the powder material box 8 and the fluid matrix box 81 respectively. The bottom of the powder material box 8 is inclined to facilitate the feeding of the powder material into the inner cavity of the outer cylinder 1. The control valve plate 9 is fitted to the outer side wall of the outer cylinder 1. A connecting plate 91 is fixed to the inner side wall of the control valve plate 9. An avoidance slot 12 for the vertical sliding of the connecting plate 91 is formed through the side wall of the outer cylinder 1. The control valve plate 9 and the connecting plate 91 can only move in the vertical direction. In addition, in order to ensure that the control valve plate 9 always remains in contact with the outer cylinder 1, appropriate protrusions (not shown in the figure) are provided at the edge of the connecting plate 91 to abut against the inner side wall of the outer cylinder 1.

[0047] In order to control the up and down movement of the control valve plate 9, the present application also has a plurality of equally spaced weight-reducing slots 94 formed through the surface of the connecting plate 91. The setting of the weight-reducing slots 94 is used to prevent the powder material from accumulating on the surface of the connecting plate 91 and at the same time reduce the weight of the connecting plate 91 itself. A connecting card plate 92 is fixed to one end of the connecting plate 91, and the cross-section of the connecting card plate 92 is in the shape of a "匚". The connecting card plate 92 is integrally arc-shaped and concentric with the annular plate 6. The connecting card plate 92 is movably clamped outside the annular plate 6. When the annular plate 6 and the arc-shaped plate 5 move up and down in the vertical direction, the annular plate 6 can push the connecting card plate 92 to move up and down accordingly, thereby带动 the control valve plate 9 to move up and down.

[0048] In order to prevent the powder material from accumulating and clogging during feeding, the present application also has a rolling body 93 movably embedded in the inner side wall of a connecting card plate 92. Vibration rings 61 are fixed to the upper and lower surfaces of the annular plate 6. The vibration rings 61 are annular and the surface is wavy. A connecting card plate 92 is clamped outside the vibration ring 61 and the rolling body 93 abuts against the surface of the vibration ring 61. When the annular plate 6 rotates, the vibration ring 61 can push the connecting card plate 92 to generate a small-amplitude vibration in the vertical direction, thereby带动 the control valve plate 9 in the inner cavity of the powder material box 8 to vibrate, so as to facilitate the feeding of the powder material into the inner cavity of the outer cylinder 1 and prevent the powder material from accumulating. The fluid matrix in the inner cavity of the fluid matrix box 81 does not need to vibrate.

[0049] The support frame 53 is provided with a plurality of support members, each of which is provided with a plurality of support members, and the support members 53 are provided with a plurality of support members. The moving end passes through the upper sealing plate 23 and is fixedly connected to the convex plate 531. The damper 7 is provided to prevent the arc plate 5 and the annular plate 6 from vibrating in the up and down directions. Therefore, when the vibration ring 61 cooperates with the connecting card 92, the vibration ring 61 itself will not vibrate, and only the connecting card 92 will vibrate. Secondly, the damper 7 has a built-in elastic part. The damper 7 is pressed on the convex plate 531 from top to bottom, and cooperates with the gravity of the arc plate 5 and the annular plate 6 to drive the arc plate 5 and the annular plate 6 to move downward. Therefore, the drum 2 can rotate faster to improve the stirring effect of the slurry. At the same time, the reaction force generated by the slurry on the stirring blade 51 needs to offset the thrust of the damper 7 and the gravity of the arc plate 5 and the annular plate 6 at the same time before pushing the arc plate 5 and the annular plate 6 to move upward.

[0050] In order to discharge the slurry in time, the present application also has a hollow cylinder 3 running through the inner cavity of the rotating drum 2, a lower sealing plate 231 is fixed to the lower end of the rotating drum 2, and the upper sealing plate 23 and the upper sealing plate 23 are fixedly connected to the hollow cylinder 3. The hollow cylinder 3 and the rotating drum 2 remain relatively fixed and concentric. The rotation of the hollow cylinder 3 can drive the rotating drum 2 to rotate accordingly. The opening at the other end of the guide frame 21 passes through the hollow cylinder 3 and is fixed to the hollow cylinder 3. After the slurry in the inner cavity of the outer cylinder 1 enters the inner cavity of the guide frame 21, it will flow into the inner cavity of the hollow cylinder 3, so that the lower end opening of the hollow cylinder 3 is discharged. A vertical plate 31 is fixed to the inner side wall of the hollow cylinder 3, and the vertical plate 31 and the guide frame are fixed to the inner wall of the hollow cylinder 3. The frames 21 are staggered with each other in the circumferential direction of the hollow cylinder 3, and a vertical groove is provided on the inner wall of the vertical plate 31. The arrangement of the hollow cylinder 3 and the vertical plate 31 can be used to increase the contact area between the slurry in the inner cavity of the hollow cylinder 3 and the inner wall of the hollow cylinder 3. A limiting ring 31 is also fixed to the inner wall of the hollow cylinder 3. The limiting ring 31 is located at the upper end of the vertical plate 31. The arrangement of the limiting ring 31 is mainly used to prevent the slurry in the inner cavity of the hollow cylinder 3 from flowing upward. A fixed column 4 is inserted into the inner cavity of the hollow cylinder 3 from bottom to top, and a gap is left between the fixed column 4 and the hollow cylinder 3. A spiral blade 41 is fixed on the surface of the fixed column 4, and the lower end of the fixed column 4 is fixed, such as Figure 9As shown, after the slurry passes through the guide frame 21 and enters the inner cavity of the hollow cylinder 3, the rotation of the hollow cylinder 3 can drive the slurry to rotate through the viscosity of the slurry. Since the fixed column 4 and the spiral blade 41 do not rotate, relative rotation will occur between the spiral blade 41 and the hollow cylinder 3. At this time, the spiral blade 41 can guide the rotating slurry, thereby discharging the slurry downward in time.

[0051] In order to install and position the hollow cylinder 3, the present application also has a cover plate 14 covering the top of the outer cylinder 1, the top of the hollow cylinder 3 is movably connected to the cover plate 14, and a group of two limiting rings 33 are fixed to the outer wall of the top of the hollow cylinder 3, and the two limiting rings 33 are respectively attached to the upper and lower surfaces of the cover plate 14. The cooperation of the limiting ring 33 and the cover plate 14 can be used to suspend the hollow cylinder 3 to prevent the hollow cylinder 3 from moving up and down in the vertical direction. A vent hole 34 is opened on the top of the hollow cylinder 3. The setting of the vent hole 34 is mainly used to balance the air pressure between the inner cavity of the hollow cylinder 3 and the outside world to avoid The top of the inner cavity of the hollow cylinder 3 generates negative pressure due to the flow of slurry, which affects the downward discharge of the slurry. In addition, a fixed shaft 35 is fixedly provided at the center of the top circle of the hollow cylinder 3, and the lower end of the fixed shaft 35 is movably inserted into the upper end of the fixed column 4. The fixed shaft 35 and the fixed column 4 cooperate with each other to improve the stability of the relative position of the two, ensuring that the hollow cylinder 3 and the rotating drum 2 can only rotate on the outside of the fixed column 4 without tilting. A driving pulley 36 is fixed at the upper end of the fixed shaft 35, and the driving pulley 36 is connected to the external motor through a belt and a pulley to drive the rotating drum 2 and the hollow cylinder 3 to rotate.

[0052] In order to describe the internal structure of the damper 7 in detail, the damper 7 of the present application includes a sealing cylinder 71 fixed to the upper surface of the upper sealing plate 23, and the inner cavity of the sealing cylinder 71 is movably provided with a sealing plug 72 adapted thereto. A piston rod 73 is fixed to the surface of the sealing plug 72, and the lower end of the piston rod 73 is movably passed through the upper sealing plate 23 and fixedly connected to the convex plate 531. The inner cavity of the sealing cylinder 71 is provided with a compression spring 74 for pressing the sealing plug 72 downward. Figure 10 As shown, the sealing plug 72 and the piston rod 73 can slide up and down in the vertical direction, and the compression spring 74 is used to push the sealing plug 72 and the piston rod 73, thereby generating downward pressure on the annular plate 6.

[0053] When the locking cam 73 is unlocked, the locking cam 730 is unlocked, and the lock 71 is unlocked, so that the lock 71 can be unlocked, and the lock 71 can be unlocked when the lock 73 is unlocked. The distance between the adjustment plate 75 and the inner wall of the top of the sealing cylinder 71 is changed, thereby changing the degree of compression of the compression spring 74. A through hole corresponding to the damper 7 is opened on the surface of the cover 14, and the through hole is covered by the cover 15. After the damper 7 is aligned with the through hole covered by the cover 15 by rotating the rotating drum 2, the cover 15 is opened, and the staff can use a wrench to rotate the adjusting screw 76 from the top of the cover 14 to adjust the compression amount of the compression spring 74. A plurality of vertical ribs 11 distributed in a ring array are fixed to the inner wall of the outer cylinder 1, and the cross-section of the vertical ribs 11 is arc-shaped. The setting of the vertical ribs 11 is used to increase the contact area between the slurry and the inner wall of the outer cylinder 1, and reduce the rotation of the slurry when it is stirred by the stirring blade 51, thereby ensuring that the slurry can generate an upward reaction thrust on the stirring blade 51 when the stirring blade 51 rotates.

[0054] The present invention also discloses a method for producing a carbon nanotube conductive slurry with stable viscosity, using the above-mentioned preparation device, which specifically includes the following steps:

[0055] Step 1: The rotating drum 2 rotates in the inner cavity of the outer drum 1 and drives the curved plate 5 and the stirring blade 51 to rotate accordingly. The stirring blade 51 stirs the slurry in the inner cavity of the outer drum 1. The slurry generates an upward reaction force on the stirring blade 51 to offset the gravity of the curved plate 5 and the annular plate 6;

[0056] Step 2: When the slurry viscosity reaches the standard, the stirring blade 51 moves upward due to the reaction force, and the discharge slot 52 is connected to the guide frame 21, and the slurry can be discharged through the guide frame 21;

[0057] Step 3: When the slurry viscosity does not meet the standard, it is divided into the following two situations:

[0058] ① The viscosity of the slurry is low. At this time, the reaction force on the stirring blade 51 is small. The arc plate 5 moves downward, causing the discharge slot 52 to be misaligned with the guide frame 21, and the slurry cannot be discharged. At the same time, the annular plate 6 moves downward, driving the control valve plate 9 to move downward. The control valve plate 9 opens the feeding port, and the powder material in the feeding box is automatically added to the inner cavity of the outer cylinder 1 to increase the slurry viscosity.

[0059] ② The viscosity of the slurry is relatively high. At this time, the reaction force on the stirring blade 51 is relatively large. The arc plate 5 moves upward, causing the discharge slot 52 to pass over the guide frame 21 and become dislocated, and the slurry cannot be discharged. At the same time, the annular plate 6 moves upward, driving the control valve plate 9 to move upward. The control valve plate 9 opens another feeding port, and the fluid matrix in the feeding box is automatically added to the inner cavity of the outer cylinder 1 to reduce the slurry viscosity until the slurry viscosity meets the standard.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for producing and preparing carbon nanotube conductive slurry with stable viscosity, characterized by: Comprising: An outer cylinder (1), a rotating cylinder (2) rotatably connected thereto is disposed through the inner cavity of the outer cylinder (1) from bottom to top, a flow guiding frame (21) is fixedly disposed on the inner side wall of the rotating cylinder (2), and one end of the flow guiding frame (21) is open through the surface of the rotating cylinder (2); An arc-shaped plate (5), the arc-shaped plate (5) is vertically slidably mounted on the surface of the rotating cylinder (2), a stirring blade (51) is fixed on the surface of the arc-shaped plate (5), and the stirring blade (51) is in a half spiral shape. A discharge slot (52) corresponding to the flow guiding frame (21) is formed through the surface of the arc-shaped plate (5); A circular plate (6), the circular plate (6) is movably sleeved on the outer side of the upper end of the rotating cylinder (2) and fixedly connected to the upper end of the arc-shaped plate (5). A control valve plate (9) is disposed on the outer side of the circular plate (6). A feed port (13) is formed through the side wall of the outer cylinder (1), and the feed port (13) communicates with a feeding box. The control valve plate (9) covers the feeding port between the feeding box and the outer cylinder (1). The arc-shaped plate (5) and the circular plate (6) move up and down to drive the control valve plate (9) to move up and down, thereby controlling the opening and closing of the feeding port.

2. The device for producing and preparing a carbon nanotube conductive slurry with stable viscosity according to claim 1, characterized in that: There are two feeding boxes, namely a powder material box (8) and a fluid matrix box (81). The control valve plate (9) fits against the outer side wall of the outer cylinder (1). A connecting plate (91) is fixedly disposed on the inner side wall of the control valve plate (9). An avoidance slot (12) for the connecting plate (91) to slide up and down is formed through the side wall of the outer cylinder (1).

3. The device for producing and preparing a carbon nanotube conductive slurry with stable viscosity according to claim 2, characterized in that: A plurality of weight-reducing slots (94) are formed through the surface of the connecting plate (91) at equal intervals. One end of the connecting plate (91) is fixedly provided with a connecting clamping plate (92), and the cross section of the connecting clamping plate (92) is in a "C" shape. The connecting clamping plate (92) is integrally arc-shaped and concentric with the circular plate (6). The connecting clamping plate (92) is movably clamped on the outer side of the circular plate (6).

4. The device for producing and preparing a carbon nanotube conductive slurry with stable viscosity according to claim 3, characterized in that: A rolling body (93) is movably embedded on the inner side wall of one of the connecting clamping plates (92). Vibration rings (61) are fixedly disposed on the upper and lower surfaces of the circular plate (6). The vibration rings (61) are annular and the surfaces are wavy. One of the connecting clamping plates (92) is clamped on the outer side of the vibration ring (61) and the rolling body (93) abuts against the surface of the vibration ring (61).

5. The device for producing and preparing a carbon nanotube conductive slurry with stable viscosity according to claim 1, characterized in that: A vertical guiding chute (22) is formed through the surface of the rotating cylinder (2). A connecting column (54) is fixedly disposed on the inner side wall of the arc-shaped plate (5), and the connecting column (54) passes through the guiding chute (22). One end of the connecting column (54) is fixedly provided with a connecting frame (53), and the connecting frame (53) fits against the inner side wall of the rotating cylinder (2). An upper sealing plate (23) is fixedly disposed at the upper end of the rotating cylinder (2), and a damper (7) is fixedly disposed on the surface of the upper sealing plate (23). A convex plate (531) is fixedly disposed at the upper end of the connecting frame (53). The movable end of the damper (7) passes through the upper sealing plate (23) and is fixedly connected to the convex plate (531).

6. The device for producing and preparing a carbon nanotube conductive slurry with stable viscosity according to claim 5, characterized in that: The inner cavity of the rotating cylinder (2) is penetrated by a hollow cylinder (3), a lower sealing plate (231) is fixed at the lower end of the rotating cylinder (2), the upper sealing plate (23) and the upper sealing plate (23) are both fixedly connected to the hollow cylinder (3), the other end opening of the guide frame (21) penetrates the hollow cylinder (3) and is fixed to the hollow cylinder (3), the inner side wall of the hollow cylinder (3) is fixed with a vertical plate (31), and the vertical plate (31) and the guide frame (21) are mutually offset in the circumferential direction of the hollow cylinder (3), and the inner side wall of the vertical plate (31) is provided with a vertical groove, the inner cavity of the hollow cylinder (3) is plugged with a fixed column (4) from bottom to top, and a gap is left between the fixed column (4) and the hollow cylinder (3), a spiral blade (41) is fixed on the surface of the fixed column (4), and the lower end of the fixed column (4) is fixed.

7. The device for producing and preparing a carbon nanotube conductive slurry with stable viscosity according to claim 6, characterized in that: The top of the outer cylinder (1) is covered with a cover plate (14), the top of the hollow cylinder (3) is movably connected to the cover plate (14), two limiting rings (33) are fixed to the outer wall of the top of the hollow cylinder (3), and the two limiting rings (33) are respectively attached to the upper and lower surfaces of the cover plate (14), a vent hole (34) is opened through the top of the hollow cylinder (3), a fixed shaft (35) is fixedly provided at the center of the top of the hollow cylinder (3), the lower end of the fixed shaft (35) is movably plugged into the upper end of the fixed column (4), and a driving pulley (36) is fixed to the upper end of the fixed shaft (35).

8. The device for producing and preparing carbon nanotube conductive slurry with stable viscosity according to claim 7, characterized in that: The damper (7) comprises a sealing cylinder (71) fixed to the upper surface of the upper sealing plate (23); the inner cavity of the sealing cylinder (71) is movably provided with a sealing plug (72) adapted thereto; a piston rod (73) is fixed to the surface of the sealing plug (72); the lower end of the piston rod (73) movably penetrates the upper sealing plate (23) and is fixedly connected to the convex plate (531); the inner cavity of the sealing cylinder (71) is provided with a compression spring (74) for pressing the sealing plug (72) downward.

9. The device for producing and preparing a carbon nanotube conductive slurry with stable viscosity according to claim 8, characterized in that: The inner cavity of the piston rod (73) is provided with an exchange chamber (731), the surface of the sealing plug (72) is penetrated with a damping hole (721) connected to the exchange chamber (731), an adjustment plate (75) is movably arranged at the upper end of the inner cavity of the sealing cylinder (71), the upper end of the compression spring (74) abuts against the adjustment plate (75), an adjustment screw (76) is rotatably installed on the upper surface of the adjustment plate (75), the adjustment screw (76) penetrates the top of the sealing cylinder (71) through a thread, a through hole corresponding to the damper (7) is penetrated on the surface of the cover plate (14), and the through hole is covered by the cover (15), and a plurality of vertical ribs (11) distributed in a ring array are fixed to the inner side wall of the outer cylinder (1), and the cross section of the vertical ribs (11) is arc-shaped.

10. A method for producing a carbon nanotube conductive slurry with stable viscosity, characterized in that: Using the preparation device according to any one of claims 1 to 9, specifically comprising the following steps: Step 1: The rotating drum (2) rotates in the inner cavity of the outer drum (1) and drives the arc plate (5) and the stirring blade (51) to rotate accordingly. The stirring blade (51) stirs the slurry in the inner cavity of the outer drum (1). The slurry generates an upward reaction force on the stirring blade (51) to offset the gravity of the arc plate (5) and the annular plate (6); Step 2: When the viscosity of the slurry reaches the standard, the stirring blade (51) is moved upward by the reaction force, and the discharge slot (52) and the guide frame (21) are just in a connected state, and the slurry can pass through the guide frame (21) and be discharged; Step 3: When the slurry viscosity does not meet the standard, it can be divided into the following two situations: ① The viscosity of the slurry is relatively low. At this time, the reaction force on the stirring blade (51) is relatively small. The arc plate (5) moves downward, causing the discharge slot (52) and the guide frame (21) to be misaligned, and the slurry cannot be discharged. At the same time, the annular plate (6) moves downward, driving the control valve plate (9) to move downward. The control valve plate (9) opens the feed port, and the powder material in the feed box is automatically added to the inner cavity of the outer cylinder (1), so as to increase the viscosity of the slurry; ② The viscosity of the slurry is relatively large. At this time, the reaction force on the stirring blade (51) is relatively large. The arc plate (5) moves upward, causing the discharge slot (52) to pass over the guide frame (21) and become dislocated, so that the slurry cannot be discharged. At the same time, the annular plate (6) moves upward, driving the control valve plate (9) to move upward. The control valve plate (9) opens another feed port, and the fluid matrix in the feed box is automatically added to the inner cavity of the outer cylinder (1) to reduce the slurry viscosity until the slurry viscosity reaches the standard.

Images