Lithium iron phosphate slurry solid content determination device and application thereof

Abstract

The invention belongs to the technical field of lithium iron phosphate production, particularly relates to a lithium iron phosphate slurry solid content measuring device and application thereof, and provides the following scheme aiming at the problems that in the prior art, the actually measured solid content has large deviation from the theoretical solid content, and settled slurry is easy to fall into a container to influence the later detection accuracy. A mounting frame is fixed to the top of the base, a stirring barrel is fixedly arranged in the mounting frame in a penetrating mode, slurry is contained in the stirring barrel, a stirring shaft is arranged in the stirring barrel, and the stirring shaft is used for stirring the slurry in the stirring barrel; the device comprises a base, and further comprises a rotating shaft rotating at the top of the base, the outer wall of the rotating shaft is sleeved with a rotating frame, and a plurality of containing grooves are formed in the rotating frame. Data detection and comparison can be conducted under the conditions that whether slurry is stirred or not and the bottom area of a container and the drying temperature are variables, accurate data can be obtained, and the accuracy of the data is improved. Therefore, the actually measured and theoretical solid content deviation is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium iron phosphate production, and in particular to a device for measuring the solid content of lithium iron phosphate slurry and an application thereof. Background Art

[0002] The production process of positive electrode material lithium iron phosphate includes 7 major processes: feeding - batching - dispersion - grinding - spraying - sintering - screening and demagnetization - packaging. The spraying process is the boundary, the process before is the front process, and the process after is the back process. The material of the front process is slurry, and the material of the back process is powder. In the production process, if the solid content of the slurry is too high, it will cause blockage in the front process, and if the solid content is too low, it will reduce production capacity and cause energy waste. Therefore, the accuracy of solid content testing is very important for production. The current testing methods mainly include: Weighing: Place a clean 50ml beaker on the electronic balance, wait for the reading to stabilize, record the mass of the empty beaker m0, and then press the '→0←' key to peel.

[0003] Add slurry: Pour 10 ml of slurry into the beaker.

[0004] Record the mass: Place the beaker containing the sample on the electronic balance, and after the reading stabilizes, record the mass m1 of the sample before drying.

[0005] Drying: Place the beaker containing the sample in a constant temperature drying oven and dry it at 120°C for 2 hours.

[0006] Cooling and weighing: After drying, take out the beaker, place it in a desiccator to cool to room temperature, and then put it on an electronic balance. After the reading stabilizes, record the mass m2 of the dried sample plus the empty beaker.

[0007] Calculation: Substitute into the formula to calculate the solid content W of the sample.

[0008] The prior art still has the following deficiencies in the determination of solid content of lithium iron phosphate slurry: 1. The current testing method has the disadvantages of large deviation between the measured and theoretical solid content (2-3%) and large fluctuation in the same batch.

[0009] 2. In the prior art, the slurry is directly poured into the container, causing the slurry to fall into the container after sedimentation, affecting the accuracy of subsequent detection.

[0010] In view of the above problems, the present invention document proposes a device for measuring the solid content of lithium iron phosphate slurry and its application. Summary of the invention

[0011] The purpose of the present invention is to solve the shortcomings of large deviation between the existing measured and theoretical solid content, the slurry after sedimentation falls into the container, and affects the accuracy of subsequent detection, and to propose a lithium iron phosphate slurry solid content determination device and its application.

[0012] In order to achieve the above object, the present invention adopts the following technical solutions: A lithium iron phosphate slurry solid content measuring device comprises a base, a mounting frame is fixed on the top of the base, a stirring drum is fixedly penetrated in the mounting frame, the stirring drum contains slurry, a stirring shaft is arranged in the stirring drum, and the stirring shaft is used to stir the slurry in the stirring drum; It also includes a rotating shaft rotating on the top of the base, the outer wall of the rotating shaft is sleeved with a rotating frame, the rotating frame is provided with a plurality of placement slots, and containers are placed in the placement slots, the plurality of containers are respectively beakers, conical flasks and culture dishes of the same number, and the bottom areas of the beakers, conical flasks and culture dishes are different, and a handle is fixed on the top of the rotating frame; A stirring structure is arranged in the stirring drum and is used to evenly stir the slurry in the stirring drum; A plurality of groups of clamping structures are arranged in the rotating frame and are used for clamping and fixing the container.

[0013] In a possible design, the stirring structure includes a driving motor fixed to the top of the mixing drum, the output shaft of the driving motor is fixed with a second bevel gear, the top of the mixing drum is rotatably connected to the first bevel gear, and the first bevel gear is meshed with the second bevel gear, the top of the stirring shaft extends to the top of the mixing drum, and the top of the stirring shaft slides through the first bevel gear, the cooperation between the first bevel gear and the second bevel gear is used to drive the mixing shaft to rotate, a mounting plate is welded to one side of the top of the mixing drum, one side of the mounting plate is rotatably connected to a third bevel gear meshed with the first bevel gear, a pin is fixed on the side of the third bevel gear that deviates from the center of the circle, two vertical rods are fixed on the top of the mixing drum, the same moving frame is slidably connected between the two vertical rods, a sliding groove is provided on the side of the moving frame close to the third bevel gear, and one end of the pin extends The gear train is actuated by a plurality of gears, and the gear train is controlled by a plurality of gears, and the gear train is controlled by a plurality of gears, and the gear train is controlled by a plurality of gears. The gear train is controlled by a plurality of gears, and the gear train is controlled by a plurality of gears. The gear train is controlled by a plurality of gears, and the gear train is controlled by a plurality of gears.

[0014] In one possible design, the clamping structure includes a rotating ring that rotates on the top of the rotating frame, and the rotating ring is concentric with the placement groove, the top of the rotating ring is provided with a plurality of arc holes, and the top of the rotating frame is slidably connected with a plurality of L-shaped plates, and the ends of the plurality of L-shaped plates close to each other are fixed with arc clamping plates, and the plurality of arc clamping plates are used to clamp the bottom of the container, and the bottom of one side of the plurality of L-shaped plates is fixed with a pin rod, and the bottom end of the pin rod extends into the arc hole and slidably cooperates with the arc hole, and the rotating ring rotates to enable the arc clamping plate to clamp the bottom of the container through the cooperation between the arc hole and the pin rod; the first pull rope pulls the rotating ring to rotate, and when the rotating ring rotates, the L-shaped plate and the arc clamping plate are driven to move toward the middle through the cooperation between the pin rod and the arc hole, and then the plurality of arc clamping plates complete the clamping of the bottom of the container, which is convenient for placing the plurality of containers on the rotating frame in a constant temperature drying oven for drying at the same time in the later stage.

[0015] In a possible design, the clamping structure also includes a plurality of fixed blocks fixed to the top of the rotating frame, a tension spring is fixed to one side of the plurality of fixed blocks, a shift block is fixed to one end of the plurality of tension springs away from the fixed blocks, the plurality of shift blocks are fixed to the outer wall of the rotating ring, a first pull rope is fixed to one side of the plurality of shift blocks away from the tension spring, the bottom ends of the plurality of first pull ropes pass through the rotating frame and are fixed to a bearing block, a first spring is fixed to the top of the plurality of bearing blocks, the top ends of the plurality of first springs are fixedly connected to the bottom of the rotating frame, and the plurality of first springs are sleeved on the corresponding The outer wall of the first pull rope, the elastic force of the first spring and the gravity of the supporting block are greater than the tension of the tension spring, which is used to drive the rotating ring to rotate counterclockwise. The top of the rotating frame is rotatably connected to a guide wheel through the base, and the guide wheel is used to guide the first pull rope. A plurality of guide rods are fixed to the top of the supporting block, and the top ends of the guide rods slide and extend into the rotating frame. When the rotating frame is pulled upward, the supporting block moves downward under the action of its own gravity and the elastic force of the first spring, and the supporting block pulls the shift block through the first pull rope, so the first pull rope pulls the rotating ring to rotate, thereby completing the clamping and fixation of the container.

[0016] In a possible design, a fixing column is rotatably provided on the bottom inner wall of the mixing drum, and the top end of the fixing column is slidably extended to the bottom end of the mixing shaft to increase the stability of the rotation of the mixing shaft.

[0017] In a possible design, a bearing ring is provided on the outer wall fixing sleeve of the rotating shaft, and the bearing ring is used to support the rotating frame, a plurality of positioning columns are fixed on the top of the bearing ring, a plurality of positioning holes are provided in the rotating frame, and the positioning holes cooperate with the positioning columns to enable the rotating shaft to drive the rotating frame to rotate.

[0018] In one possible design, the top of the base is provided with a groove located below the discharge pipe, and the bottom inner wall of the groove is provided with an electronic scale. A carrying plate is placed on the top of the electronic scale, and the carrying plate is slidably set in the groove. The carrying plate is used to carry the container, and the electronic scale and the carrying plate are used together to measure the mass of the container before and after the slurry is placed.

[0019] In a possible design, a rubber layer is provided on the side of the arc-shaped clamping plate away from the L-shaped plate to increase the friction between the arc-shaped clamping plate and the container. The rubber layer is any one of silicone rubber, fluororubber, EPDM rubber, EPDM rubber, and butyl rubber.

[0020] In a possible design, a sliding groove is provided in the handle, a connecting rod is slidably connected in the sliding groove, the bottom end of the connecting rod slides and extends to the bottom of the handle and is fixed with a lifting plate, a second spring is fixed between the top end of the connecting rod and the top inner wall of the sliding groove, a pull rod is fixed to the top of the connecting rod, and the top end of the pull rod slides and extends to the top of the handle, the second spring is sleeved on the outer wall of the pull rod, and a plurality of second pull ropes are provided on the outer wall of the lifting plate, one end of each of the plurality of second pull ropes is fixedly connected to one side of an adjacent shift block, A plurality of guide posts are fixed on the top of the rotating frame, an L-shaped guide hole is arranged in the guide post, and one end of the second pull rope passes through the L-shaped guide hole, the L-shaped guide hole and the guide post are used to change the pulling direction of the second pull rope, the top of the rotating frame is rotatably connected to a plurality of guide groove wheels through the base, and the guide groove wheels are used to guide the second pull rope; the rotating frame is lifted upward by the pull rod, the pull rod drives the lifting plate to move upward, the lifting plate pulls the shift block through the second pull rope, and the shift block drives the rotating ring to rotate, so that multiple containers can be clamped at the same time, and the clamping is more stable.

[0021] In the present application, an application method of a lithium iron phosphate slurry solid content measuring device comprises the following steps: S1. Classification measurement: data analysis and comparison are performed based on variables such as slurry stirring state, container bottom area, drying temperature, etc. to obtain accurate data. S2. Place the rotating frame on the carrying ring and limit the position by the positioning column and the positioning hole; place a beaker, a conical flask and a culture dish in the placement slot, and use an electronic scale and a carrying plate to measure the weight of the empty container; pour 10 ml of unstirred slurry into the container through the flow control valve to measure the slurry mass; S3, start the drive motor, drive the stirring shaft to rotate through the bevel gear, and make it move up and down to increase the stirring uniformity; repeat step S2, and pour the stirred slurry into the container; S4, repeating steps S2 and S3 to obtain multiple groups of samples; pulling the rotating frame upward and clamping the container, placing them in constant temperature drying ovens at different temperatures for drying for 2 hours; taking out the container after drying, cooling it to room temperature and weighing it, and calculating the solid content of the sample; performing data analysis and comparison according to different variables; S5. When the rotating frame is lifted, the bearing block moves downward and the rotating ring is rotated by pulling the first pull rope, driving the L-shaped plate and the arc-shaped clamping plate to move toward the middle to clamp the bottom of the container; it is convenient to place multiple containers in a constant temperature drying oven for drying at the same time, and determine the solid content of the sample under fixed variables; S6. The rotating frame can also be pulled up by the pull rod, and the rotating ring can be pulled up by the second pull rope to rotate, thereby clamping the bottom of the container, and the clamping is more stable.

[0022] Beneficial effect: In the present invention, the top of the mixing drum is rotatably connected to the first bevel gear, the top of the mixing shaft slides through the first bevel gear, the side of the third bevel gear deviating from the center of the circle is fixed with a pin, the top of the mixing drum is slidably connected to the moving frame, the pin is slidably matched with the slide groove, and the moving frame is rotatably sleeved on the outer wall of the mixing shaft through a sleeve ring; the mixing shaft is driven to stir the slurry through the cooperation of the second bevel gear and the first bevel gear, and the third bevel gear drives the mixing shaft to reciprocate up and down through the cooperation of the pin and the moving frame, so that different heights inside the mixing drum can be stirred, thereby increasing the uniformity of stirring and avoiding the slurry precipitation from affecting the accuracy of later detection; In the present invention, a rotating ring is rotatably arranged at the top of the rotating frame, a plurality of arc-shaped holes are arranged at the top of the rotating ring, a plurality of L-shaped plates are slidably connected to the top of the rotating frame, a pin is fixed to the bottom of one side of the plurality of L-shaped plates, and the pin is slidably matched with the arc-shaped hole; the first pull rope pulls the rotating ring to rotate, and when the rotating ring rotates, the L-shaped plate and the arc-shaped clamping plate are driven to move toward the middle through the cooperation of the pin and the arc-shaped hole, and then the plurality of arc-shaped clamping plates complete the clamping of the container, so that the plurality of containers on the rotating frame can be placed in a constant temperature drying oven for drying at the same time in the later stage; In the present invention, a plurality of placement slots are provided in the rotating frame, and containers are placed in the placement slots, and the plurality of containers are respectively beakers, conical flasks and culture dishes of the same number, and the bottom areas of the beakers, conical flasks and culture dishes are all different; the same volume of slurry can be placed in the beakers, conical flasks and culture dishes, and then the solid content of the samples in the containers with different bottom areas of the slurry can be detected under the condition of constant slurry uniformity and drying temperature, and the best data can be obtained.

[0023] In the present invention, data detection and comparison can be performed respectively when the slurry is stirred or not, the bottom area of ​​the container and the drying temperature are variables, so that accurate data can be obtained, thereby reducing the deviation between the actual measured and theoretical solid content. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a device for measuring solid content of lithium iron phosphate slurry provided in Example 1 of the present invention; Figure 2 A schematic diagram of a three-dimensional explosion structure of a device for measuring solid content of lithium iron phosphate slurry provided in Example 1 of the present invention; Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a mixing drum of a device for measuring solid content of lithium iron phosphate slurry provided in Example 1 of the present invention; Figure 4 A schematic diagram of a three-dimensional exploded structure of a third bevel gear, a moving frame and a first bevel gear of a device for measuring solid content of lithium iron phosphate slurry provided in Example 1 of the present invention; Figure 5 A schematic diagram of a three-dimensional exploded structure of a rotating frame and a rotating shaft of a lithium iron phosphate slurry solid content measuring device provided in Example 1 of the present invention; Figure 6 A schematic diagram of the three-dimensional structure of a rotating ring, an L-shaped plate and a first pull rope of a lithium iron phosphate slurry solid content measuring device provided in Example 1 of the present invention; Figure 7 A schematic diagram of a three-dimensional exploded structure of an L-shaped plate and a rotating ring of a lithium iron phosphate slurry solid content measuring device provided in Example 1 of the present invention; Figure 8 A schematic diagram of the three-dimensional structure of a rotating frame, a rotating ring and a lifting plate of a lithium iron phosphate slurry solid content measuring device provided in Example 2 of the present invention; Fig. 9 A schematic cross-sectional view of a handle of a device for measuring solid content of lithium iron phosphate slurry provided in Example 2 of the present invention; Fig.10 This is a schematic diagram of a three-dimensional sectional explosion structure of a rotating ring, a guide wheel, and a guide column of a lithium iron phosphate slurry solid content measuring device provided in Example 2 of the present invention.

[0025] In the figure: 1, base; 2, mounting frame; 3, mixing drum; 4, discharge pipe; 5, flow control valve; 6, mixing shaft; 7, first bevel gear; 8, drive motor; 9, second bevel gear; 10, mounting plate; 11, third bevel gear; 12, pin; 13, vertical rod; 14, moving frame; 15, slide; 16, collar; 17, rotating shaft; 18, bearing ring; 19, positioning column; 20, rotating frame; 21, positioning hole; 22, handle; 23, placement slot; 24, container; 25, rotating ring ; 26. L-shaped plate; 27. Arc-shaped clamping plate; 28. Arc-shaped hole; 29. ​​Pin rod; 30. Fixed block; 31. Dial block; 32. Tension spring; 33. First pull rope; 34. Guide wheel; 35. Load-bearing block; 36. First spring; 37. Guide rod; 38. Sliding groove; 39. Pull rod; 40. Second spring; 41. Connecting rod; 42. Lifting plate; 43. Guide column; 44. L-shaped guide hole; 45. Guide groove wheel; 46. Second pull rope; 47. Groove; 48. Electronic scale; 49. Load-bearing plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Example 1: Reference Figure 1-Figure 3 The measuring device is used in the field of lithium iron phosphate production. The structure includes a base 1. A mounting frame 2 is fixed to the top of the base 1 by bolts. A mixing drum 3 is fixed through the mounting frame 2 by a bearing. The mixing drum 3 is used to hold the lithium iron phosphate slurry to be measured. A mixing shaft 6 is provided in the mixing drum 3, and the blades of the mixing shaft 6 are used to stir the slurry in the mixing drum 3.

[0028] Reference Figure 2 and Figure 5 In addition, the device also includes a rotating shaft 17 rotating on the top of the base 1, and a rotating frame 20 is provided on the outer wall of the rotating shaft 17 through a bearing sleeve. A plurality of placement grooves 23 are provided in the rotating frame 20, and these placement grooves 23 are used to place containers 24. The containers 24 include the same number of beakers, conical flasks and culture dishes, and the bottom areas of the beakers, conical flasks and culture dishes are different to meet different test requirements. A handle 22 is welded on the top of the rotating frame 20 to facilitate manual rotation of the rotating frame 20.

[0029] Reference Figure 3 and Figure 4In order to realize the stirring function, a stirring structure is provided in the stirring drum 3 in this embodiment. The stirring structure includes a driving motor 8 fixed to the top of the stirring drum 3, and the output shaft of the driving motor 8 is fixed with a second bevel gear 9 through a key connection. The top of the stirring drum 3 is rotatably connected to the first bevel gear 7 through a bearing, and the first bevel gear 7 is meshed with the second bevel gear 9. The top of the stirring shaft 6 extends to the top of the stirring drum 3, and the top of the stirring shaft 6 slides through the first bevel gear 7 through a bearing, so that the stirring shaft 6 can be driven to rotate when the first bevel gear 7 rotates. A mounting plate 10 is welded to one side of the top of the stirring drum 3, and a third bevel gear 11 meshed with the first bevel gear 7 is rotatably connected to one side of the mounting plate 10 through a bearing. A pin 12 is welded to the side of the third bevel gear 11 that deviates from the center of the circle. The top of the mixing drum 3 is fixed with two vertical rods 13 by bolts, and the same moving frame 14 is slidably connected between the two vertical rods 13. A slide groove 15 is provided on the side of the moving frame 14 close to the third bevel gear 11, and one end of the pin 12 extends into the slide groove 15 and slides with the slide groove 15. When the third bevel gear 11 rotates, the moving frame 14 can be driven to move up and down through the cooperation of the pin 12 and the slide groove 15. The outer wall of the stirring shaft 6 is provided with a collar 16 through a bearing rotation sleeve, and the collar 16 is welded to one side of the moving frame 14, so that when the moving frame 14 moves up and down, the stirring shaft 6 can be driven to move up and down through the collar 16. A discharge pipe 4 that cooperates with the container 24 is fixed to the bottom of the mixing drum 3 through a flange, and a flow control valve 5 is provided on the outer wall of the discharge pipe 4 for controlling the discharge of the slurry.

[0030] In specific use, first start the drive motor 8, and drive the stirring shaft 6 to rotate through the cooperation of the second bevel gear 9 and the first bevel gear 7 to stir the slurry in the mixing drum 3. At the same time, the first bevel gear 7 will drive the third bevel gear 11 meshing with it to rotate, and the third bevel gear 11 drives the stirring shaft 6 to move up and down through the cooperation of the pin 12 and the moving frame 14, so that the slurry can be stirred while stirring the positions at different heights inside the mixing drum 3, thereby increasing the uniformity of stirring. After the stirring is completed, turn off the drive motor 8, open the flow control valve 5, and pour the stirred slurry in the mixing drum 3 into the corresponding container 24 one by one through the discharge pipe 4.

[0031] Reference Figure 5-Figure 7In order to clamp and fix the container 24, the embodiment provides multiple groups of clamping structures in the rotating frame 20. The clamping structure includes a rotating ring 25 rotating on the top of the rotating frame 20, and the rotating ring 25 is concentric with the placement groove 23. A plurality of arc holes 28 are provided on the top of the rotating ring 25. A plurality of L-shaped plates 26 are slidably connected to the top of the rotating frame 20, and the ends of the L-shaped plates 26 close to each other are fixed with arc clamping plates 27 by bolts, and the plurality of arc clamping plates 27 are used to clamp the bottom of the container 24. A pin rod 29 is welded to the bottom of one side of the plurality of L-shaped plates 26, and the bottom end of the pin rod 29 extends into the arc hole 28 and slidably cooperates with the arc hole 28. Therefore, when the rotating ring 25 rotates, the cooperation between the arc hole 28 and the pin rod 29 can drive the L-shaped plate 26 and the arc clamping plate 27 to move toward the middle or outward, thereby achieving the clamping or release of the container 24.

[0032] Then, the rotating ring 25 is rotated by the first pull rope 33. When the rotating ring 25 rotates, the arc hole 28 and the pin 29 cooperate to drive the L-shaped plate 26 and the arc clamping plate 27 to move toward the middle, and then the multiple arc clamping plates 27 complete the bottom clamping of the container 24. After that, the multiple containers 24 on the rotating frame 20 are placed in a constant temperature drying oven for drying. After the drying is completed, the rotating ring 25 is rotated in the opposite direction by manually pulling the first pull rope 33 again, and then the arc clamping plate 27 releases the container 24, completing the entire solid content determination process.

[0033] Reference Figure 6 The clamping structure further includes a plurality of fixed blocks 30 fixed to the top of the rotating frame 20. A tension spring 32 is fixed to one side of each fixed block 30. A shift block 31 is fixed to the other end of each of the tension springs 32, and each of the shift blocks 31 is fixed to the outer wall of the rotating ring 25. In order to realize the driving of the rotating ring 25, a first pull rope 33 is fixed to the side of each shift block 31 away from the tension spring 32. The bottom ends of these first pull ropes 33 all penetrate the rotating frame 20 and are fixed to a bearing block 35. At the top of the bearing block 35, a plurality of first springs 36 are fixed, and the top ends of these first springs 36 are fixedly connected to the bottom of the rotating frame 20. It is important that these first springs 36 are sleeved on the outer wall of the corresponding first pull rope 33. In order to ensure that the rotating ring 25 can rotate counterclockwise, the elastic force of the first spring 36 and the gravity of the bearing block 35 are set to be greater than the tension of the tension spring 32.

[0034] Reference Figure 6 At the top of the rotating frame 20, a guide wheel 34 is rotatably connected through a base, and the guide wheel 34 is used to guide the first pull rope 33 to ensure that they can move smoothly. At the top of the bearing block 35, a plurality of guide rods 37 are also fixed, and the top ends of these guide rods 37 slide and extend into the rotating frame 20, providing additional stability.

[0035] Specifically, when the rotating frame 20 is pulled upward, the bearing block 35 moves downward under the action of its own weight and the elastic force of the first spring 36. This downward movement pulls the shifting block 31 through the first pull rope 33, and then pulls the rotating ring 25 to rotate. In this way, the container 24 can be clamped and fixed.

[0036] Reference Figure 3 A fixing column is rotatably connected to the inner wall of the bottom of the mixing drum 3. The top of the fixing column slides and extends to the bottom of the mixing shaft 6 to increase the stability of the mixing shaft 6 during rotation. This ensures that the mixing shaft 6 can remain stable when stirring the lithium iron phosphate slurry, thereby improving the stirring effect and measurement accuracy.

[0037] Reference Figure 5 A carrying ring 18 is fixedly provided on the outer wall of the rotating shaft 17. The carrying ring 18 is used to carry the rotating frame 20. A plurality of positioning posts 19 are fixed on the top of the carrying ring 18. A plurality of positioning holes 21 are provided in the rotating frame 20, and these positioning holes 21 cooperate with the positioning posts 19. In this way, when the rotating shaft 17 rotates, the rotating frame 20 can be driven to rotate by the cooperation of the positioning posts 19 and the positioning holes 21. This design ensures that the rotating frame 20 can rotate stably and accurately, thereby achieving the clamping and fixing of the container 24.

[0038] Reference Figure 2 , a groove 47 located below the discharge pipe 4 is provided on the top of the base 1. An electronic scale 48 is fixedly installed on the bottom inner wall of the groove 47. The model of the electronic scale 48 is preferably ACS-30. Of course, other models can also be selected as long as the measurement accuracy requirements are met. A carrying plate 49 is placed on the top of the electronic scale 48. The carrying plate 49 is slidably set in the groove 47 to facilitate taking the carrying plate 49 out of or putting it into the groove 47. The carrying plate 49 is used to carry the container 24, and the container 24 is used to hold lithium iron phosphate slurry. The electronic scale 48 cooperates with the carrying plate 49 to measure the mass of the container 24 before and after holding the slurry, so as to calculate the solid content of the slurry.

[0039] Reference Figure 6 Furthermore, a rubber layer is provided on the side of the arc clamping plate 27 away from the L-shaped plate 26, and the rubber layer is used to increase the friction between the arc clamping plate 27 and the container 24 to prevent the container 24 from slipping during the clamping process. The material of the rubber layer can be any one of silicone rubber, fluororubber, ethylene propylene rubber, EPDM rubber, and butyl rubber, all of which have good wear resistance and elasticity and can meet the use requirements.

[0040] Through the above specific implementation, we can realize a stable and reliable lithium iron phosphate slurry solid content measuring device, whose clamping structure can effectively clamp and fix the container 24, and improve the measurement accuracy and stability. At the same time, through the design of structures such as the fixed column and the carrying ring 18, we can also ensure the stability of the stirring shaft 6 during the stirring process, and further improve the measurement effect.

[0041] The device provided in this embodiment can achieve uniform stirring of lithium iron phosphate slurry, and pour the stirred slurry into containers with different bottom areas, and then dry multiple groups of samples at different temperatures, so as to facilitate the determination of solid content later. At the same time, through the provided clamping structure, it is possible to conveniently clamp and fix multiple containers, thereby improving the efficiency of the test.

[0042] Example 2: Reference Figure 8-Figure 10 , improved on the basis of Example 1: a sliding groove 38 is provided in the handle 22, and a connecting rod 41 is slidably connected in the sliding groove 38. The bottom end of the connecting rod 41 slides and extends to the bottom of the handle 22, and a lifting plate 42 is fixed. A second spring 40 is fixed between the top of the connecting rod 41 and the top inner wall of the sliding groove 38, and the second spring 40 is used to provide elastic force so that the lifting plate 42 can remain in place when not affected by external forces. A pull rod 39 is also fixed to the top of the connecting rod 41, and the top of the pull rod 39 slides and extends to the top of the handle 22, which is convenient for user operation. The second spring 40 is sleeved on the outer wall of the pull rod 39 to prevent the pull rod 39 from shaking during the sliding process.

[0043] refer to Figure 8-Figure 10 , the outer wall of the lifting plate 42 is provided with a plurality of second pull ropes 46, one end of each of which is fixedly connected to one side of an adjacent shifting block 31. A plurality of guide columns 43 are fixed to the top of the rotating frame 20, and an L-shaped guide hole 44 is provided in the guide column 43, and one end of the second pull rope 46 passes through the L-shaped guide hole 44. The L-shaped guide hole 44 and the guide column 43 are used to change the pulling direction of the second pull rope 46, so that the second pull rope 46 can smoothly pull the shifting block 31. The top of the rotating frame 20 is also rotatably connected to a plurality of guide groove wheels 45 through the base, and the guide groove wheels 45 are used to guide the second pull rope 46, so that the second pull rope 46 is smoother during the pulling process.

[0044] When in use, the user first places the container 24 on the carrier plate 49, and then measures the mass of the container 24 by the electronic scale 48. Next, the user pours the lithium iron phosphate slurry into the container 24, and again measures the total mass of the container 24 and the slurry by the electronic scale 48. Then, the user pulls up the pull rod 39, and the pull rod 39 drives the lifting plate 42 to move upward, and the lifting plate 42 pulls the shift block 31 through the second pull rope 46. The shift block 31 drives the rotating ring 25 to rotate, thereby making the arc-shaped clamping plate 27 approach the container 24 and clamp the container 24. Since a rubber layer is provided on the arc-shaped clamping plate 27, the friction between the container 24 and the container 24 can be increased, making the clamping more stable. Finally, the user discharges the slurry through the discharge pipe 4, measures the mass of the container 24 again, and calculates the solid content of the slurry.

[0045] In this way, multiple containers 24 can be clamped at the same time, the clamping is more stable, and the work efficiency is improved. At the same time, the electronic scale 48 and the carrier plate 49 are used in combination to accurately measure the solid content of the slurry, thereby improving the measurement accuracy.

[0046] An application method of a lithium iron phosphate slurry solid content measuring device comprises the following steps: S1. During the measurement, it is necessary to classify and measure according to variables such as whether the slurry is stirred, the bottom area of ​​the container 24, and the drying temperature, and perform data analysis and comparison according to different variables to obtain accurate data; S2, place the rotating frame 20 on the top of the carrying ring 18, and the positioning column 19 cooperates with the positioning hole 21 to limit the rotating frame 20, then place multiple containers 24 in the placement groove 23 respectively, and the bottom of the container 24 is located on the base 1, and the multiple containers 24 are respectively the same number of beakers, conical flasks and culture dishes, and the bottom areas of the beakers, conical flasks and culture dishes are different. The rotating shaft 17 is driven by the motor to rotate, and the rotating shaft 17 drives the rotating frame 20 to rotate through the positioning column 19. The rotating frame 20 moves the multiple containers 24 one by one to the bottom of the carrying plate 49 of the discharge pipe 4, and the weight when no slurry is contained is measured by the cooperation of the electronic scale 48 and the carrying plate 49, and then the flow control valve 5 is opened, and the unmixed slurry in the mixing drum 3 is poured into the corresponding container 24 one by one through the discharge pipe 4, and the poured slurry is 10ml, and then the mass of the slurry is measured by the electronic scale 48 and the carrying plate 49; S3, start the driving motor 8, and drive the stirring shaft 6 to rotate through the cooperation of the second bevel gear 9 and the first bevel gear 7 to stir the slurry in the stirring drum 3, and the first bevel gear 7 drives the third bevel gear 11 to rotate, and the third bevel gear 11 drives the stirring shaft 6 to move up and down through the cooperation of the pin 12 and the moving frame 14, so that the stirring shaft 6 can be driven to stir the slurry while stirring the positions at different heights inside the stirring drum 3 to increase the uniformity of stirring, and then repeat step S2 to pour 10 ml of the evenly stirred slurry into multiple containers 24; S4, repeating steps S2 and S3 to obtain multiple groups of samples, then pulling the rotating frame 20 upward, and clamping multiple containers 24 during the pulling, and placing the multiple rotating frames 20 in a constant temperature drying oven at different temperatures for drying for 2 hours, taking out the containers 24 after drying, placing them in a dryer to cool to room temperature, and then weighing them, so that the solid content of the samples can be calculated, and then performing data analysis and comparison according to different temperatures, whether the slurry is stirred or not, and the bottom area of ​​the container 24; S5. When the rotating frame 20 is pulled upward by the handle 22, the bearing block 35 moves downward under the action of its own weight and the elastic force of the first spring 36. The bearing block 35 pulls the shifting block 31 through the first pull rope 33. The weight of the bearing block 35 and the elastic force of the first spring 36 are greater than the tension of the tension spring 32. Therefore, the first pull rope 33 pulls the rotating ring 25 to rotate. When the rotating ring 25 rotates, the L-shaped plate 26 and the arc clamping plate 27 are driven to move toward the middle through the cooperation of the pin rod 29 and the arc hole 28, and then the multiple arc clamping plates 27 complete the clamping of the container 24, so that the multiple containers 24 on the rotating frame 20 are placed in a constant temperature drying oven for drying at the same time in the later stage. The multiple containers 24 are the same number of beakers, conical flasks and culture dishes, and the solid content of the sample can be determined when the bottom area of ​​the container 24 is a variable and the temperature and slurry conditions are quantitative. S6. In addition, the rotating frame 20 can be pulled upward by the pull rod 39, and the pull rod 39 drives the lifting plate 42 to move upward. The lifting plate 42 pulls the shift block 31 through the second pull rope 46, and the shift block 31 drives the rotating ring 25 to rotate, so that multiple containers 24 can be clamped at the same time, and the clamping is more stable.

[0047] However, as is well known to those skilled in the art, the working principles and wiring methods of the drive motor 8, flow control valve 5 and electronic scale 48 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for measuring solid content of lithium iron phosphate slurry, characterized in that: It comprises a base (1), a mounting frame (2) is fixed on the top of the base (1), a mixing drum (3) is fixedly passed through the mounting frame (2), slurry is contained in the mixing drum (3), a mixing shaft (6) is provided in the mixing drum (3), and the mixing shaft (6) is used to mix the slurry in the mixing drum (3); It also includes a rotating shaft (17) rotating on the top of the base (1), the outer wall of the rotating shaft (17) is provided with a rotating frame (20), the rotating frame (20) is provided with a plurality of placement grooves (23), and containers (24) are placed in the placement grooves (23), the plurality of containers (24) are respectively beakers, conical flasks and culture dishes of the same number, and the bottom areas of the beakers, conical flasks and culture dishes are different, and a handle (22) is fixed on the top of the rotating frame (20); A stirring structure, arranged in the stirring drum (3), and used for uniformly stirring the slurry in the stirring drum (3); A plurality of groups of clamping structures are arranged in the rotating frame (20) and are used to clamp and fix the container (24).

2. A lithium iron phosphate slurry solid content measuring device according to claim 1, characterized in that: The stirring structure comprises a driving motor (8) fixed to the top of the stirring drum (3), the output shaft of the driving motor (8) being fixed with a second bevel gear (9), the top of the stirring drum (3) being rotatably connected with a first bevel gear (7), and the first bevel gear (7) is meshed with the second bevel gear (9), the top of the stirring shaft (6) extending to the top of the stirring drum (3), and the top of the stirring shaft (6) slidingly passes through the first bevel gear (7), the cooperation between the first bevel gear (7) and the second bevel gear (9) is used to drive the stirring shaft (6) to rotate, a mounting plate (10) is welded to one side of the top of the stirring drum (3), one side of the mounting plate (10) is rotatably connected with a third bevel gear (11) meshed with the first bevel gear (7), a pin (12) is fixed to the side of the third bevel gear (11) deviating from the center of the circle, two vertical rods (13) are fixed to the top of the stirring drum (3), a same moving frame (14) is slidably connected between the two vertical rods (13), and the moving frame (14) is close to the third bevel gear (11). A slide groove (15) is provided on one side of the gear (11), and one end of the pin (12) extends into the slide groove (15) and slidably cooperates with the slide groove (15), and the cooperation between the slide groove (15) and the pin (12) drives the moving frame (14) to move up and down. A sleeve (16) is rotatably sleeved on the outer wall of the stirring shaft (6), and the sleeve (16) is fixed on one side of the moving frame (14). The moving frame (14) drives the stirring shaft (6) to move up and down through the sleeve (16). A discharge pipe (4) that cooperates with the container (24) is fixed at the bottom of the stirring drum (3), and a flow control valve (5) is provided on the outer wall of the discharge pipe (4).

3. A lithium iron phosphate slurry solid content measuring device according to claim 2, characterized in that: The clamping structure comprises a rotating ring (25) rotating on the top of the rotating frame (20), and the rotating ring (25) is cocentric with the placement groove (23), a plurality of arc-shaped holes (28) are provided on the top of the rotating ring (25), and a plurality of L-shaped plates (26) are slidably connected to the top of the rotating frame (20), and arc-shaped clamping plates (27) are fixed at one end of the plurality of L-shaped plates (26) close to each other, and the plurality of arc-shaped clamping plates (27) are used to clamp the bottom of the container (24), and a pin rod (29) is fixed at the bottom of one side of the plurality of L-shaped plates (26), and the bottom end of the pin rod (29) extends into the arc-shaped hole (28) and slidably cooperates with the arc-shaped hole (28), and the rotating ring (25) rotates through the cooperation of the arc-shaped hole (28) and the pin rod (29) so that the arc-shaped clamping plate (27) clamps the bottom of the container (24).

4. A lithium iron phosphate slurry solid content measuring device according to claim 3, characterized in that: The clamping structure further comprises a plurality of fixed blocks (30) fixed to the top of the rotating frame (20), a tension spring (32) being fixed to one side of the plurality of fixed blocks (30), a shifting block (31) being fixed to one end of the plurality of tension springs (32) away from the fixed blocks (30), the plurality of shifting blocks (31) being fixed to the outer wall of the rotating ring (25), a first pull rope (33) being fixed to one side of the plurality of shifting blocks (31) away from the tension spring (32), the bottom ends of the plurality of first pull ropes (33) passing through the rotating frame (20) and being fixed to a bearing block (35), and the tops of the plurality of bearing blocks (35) being fixed to a first spring (36). The top ends of the plurality of first springs (36) are fixedly connected to the bottom of the rotating frame (20), and the plurality of first springs (36) are sleeved on the outer walls of the corresponding first pull ropes (33). The elastic force of the first springs (36) and the gravity of the bearing block (35) are greater than the tension of the tension spring (32), and are used to drive the rotating ring (25) to rotate counterclockwise. The top of the rotating frame (20) is rotatably connected to a guide wheel (34) through a base, and the guide wheel (34) is used to guide the first pull ropes (33). The top of the bearing block (35) is fixed with a plurality of guide rods (37), and the top ends of the guide rods (37) slide and extend into the rotating frame (20).

5. A lithium iron phosphate slurry solid content measuring device according to claim 4, characterized in that: A fixing column is rotatably provided on the inner wall of the bottom of the mixing drum (3), and the top end of the fixing column is slidably extended to the bottom end of the mixing shaft (6) to increase the rotation stability of the mixing shaft (6).

6. A lithium iron phosphate slurry solid content measuring device according to claim 5, characterized in that: The outer wall fixed sleeve of the rotating shaft (17) is provided with a bearing ring (18), and the bearing ring (18) is used to bear the rotating frame (20). A plurality of positioning posts (19) are fixed on the top of the bearing ring (18). A plurality of positioning holes (21) are provided in the rotating frame (20), and the positioning holes (21) cooperate with the positioning posts (19) to enable the rotating shaft (17) to drive the rotating frame (20) to rotate.

7. A lithium iron phosphate slurry solid content measuring device according to claim 6, characterized in that: The top of the base (1) is provided with a groove (47) located below the discharge pipe (4), the bottom inner wall of the groove (47) is provided with an electronic scale (48), the top of the electronic scale (48) is placed with a carrying plate (49), and the carrying plate (49) is slidably arranged in the groove (47), and the carrying plate (49) is used to carry the container (24).

8. A lithium iron phosphate slurry solid content measuring device according to claim 7, characterized in that: A rubber layer is provided on one side of the arc-shaped clamping plate (27) away from the L-shaped plate (26) for increasing the friction between the arc-shaped clamping plate (27) and the container (24); the rubber layer is any one of silicone rubber, fluororubber, ethylene propylene rubber, EPDM rubber, and butyl rubber.

9. A lithium iron phosphate slurry solid content measuring device according to claim 8, characterized in that: The handle (22) is provided with a sliding groove (38), and a connecting rod (41) is slidably connected to the sliding groove (38). The bottom end of the connecting rod (41) slides and extends to the bottom of the handle (22) and is fixed with a lifting plate (42). A second spring (40) is fixed between the top of the connecting rod (41) and the top inner wall of the sliding groove (38). A pull rod (39) is fixed to the top of the connecting rod (41), and the top of the pull rod (39) slides and extends to the top of the handle (22). The second spring (40) is sleeved on the outer wall of the pull rod (39). The outer wall of the lifting plate (42) is provided with a plurality of second springs (40). Two pull ropes (46), one end of each of the second pull ropes (46) is fixedly connected to one side of an adjacent shifting block (31), a plurality of guide columns (43) are fixedly connected to the top of the rotating frame (20), an L-shaped guide hole (44) is provided in the guide column (43), and one end of the second pull rope (46) passes through the L-shaped guide hole (44), the L-shaped guide hole (44) and the guide column (43) are used to change the pulling direction of the second pull rope (46), and a plurality of guide groove wheels (45) are rotatably connected to the top of the rotating frame (20) through a base, and the guide groove wheels (45) are used to guide the second pull rope (46).

10. The application method of the device for measuring solid content of lithium iron phosphate slurry according to claim 9, characterized in that: The following steps are involved: S1. Classification measurement: data analysis and comparison are performed based on the variables of the slurry stirring state, the bottom area of ​​the container (24), and the drying temperature to obtain accurate data. S2, placing the rotating frame (20) on the carrying ring (18), and limiting the position by the positioning column (19) and the positioning hole (21); placing a beaker, a conical flask and a culture dish in the placement groove (23), and using an electronic scale (49) and a carrying plate (48) to measure the weight of the empty container (24); pouring 10 ml of unstirred slurry into the container (24) through the flow control valve (5), and measuring the mass of the slurry; S3, starting the driving motor (8), driving the stirring shaft (6) to rotate through the bevel gear, and causing it to reciprocate up and down to increase stirring uniformity; repeating step S2, pouring the stirred slurry into the container (24); S4, repeating steps S2 and S3 to obtain multiple groups of samples; pulling the rotating frame (20) upward and clamping the container (24), and placing them in constant temperature drying ovens at different temperatures for drying for 2 hours; After drying, the container (24) is taken out, cooled to room temperature and weighed to calculate the solid content of the sample; data analysis and comparison are performed according to different variables; S5. When the rotating frame (20) is lifted, the bearing block (35) moves downward and the rotating ring (25) is pulled to rotate by the first pull rope (33), driving the L-shaped plate (26) and the arc-shaped clamping plate (27) to move toward the middle to clamp the bottom of the container (24); it is convenient to place multiple containers (24) in a constant temperature drying oven for drying at the same time, and to determine the solid content of the sample under fixed variables; S6. The rotating frame (20) can also be pulled up by the pull rod (39), and the rotating ring (25) can be pulled up by the second pull rope (46) to rotate, thereby clamping the bottom of the container (24) to make the clamping more stable.

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