A small-batch permanent magnet iron removal device for laboratory use

Abstract

The present invention discloses a small-batch permanent magnet iron removal device for laboratory use, which includes a motor and a speed reducer connected in sequence. The output end of the speed reducer has two output shafts. The first output shaft is fixed in the first support, and the second output shaft is connected to the first gear. The left end of the rotating housing is fixed on the first support, and the right end is fixed on the second support. It is an integral body with the second gear and is connected to the first gear through the second gear. A plurality of sleeves are arranged inside the rotating housing. One end of the sleeve is fixed on the sleeve tray, and the sleeve tray is connected in cooperation with the first output shaft. The other end of the sleeve is connected to the transition support inside the second support. One end of the magnetic bar is placed inside the sleeve, and the other end is connected to the transition support, forming an integral body of the sleeve, the magnetic bar, and the transition support, which is driven by the first output shaft to rotate. The main support is connected to the third support and the fourth support. This device is cheap and has a high iron removal efficiency, and can meet the iron removal requirements for small-batch production and laboratory use of lithium-ion battery materials.

Description

Technical Field

[0001] The present invention relates to a small-batch permanent magnet iron removal device for laboratory use, which is applied to intermittently and cyclically remove magnetic foreign matters from powder materials in small batches. Background Art

[0002] Driven by the new energy industry, the lithium-ion battery industry has maintained continuous rapid growth; the development of lithium-ion batteries will surely ensure a longer service life and higher safety with more stringent requirements. Since magnetic foreign matters have a crucial impact on the safety performance of lithium batteries, in order to obtain higher safety performance of lithium batteries, higher requirements must be put forward for the control of magnetic foreign matters in the production process of lithium-ion battery materials. Currently, the magnetic foreign matters in battery materials are generally controlled within 50 ppb, and for cathode materials such as NCA used in Tesla, the magnetic foreign matters are required to be controlled within 10 ppb. However, at present, when removing magnetic foreign matters from lithium-ion battery materials, the entire production process needs to be concerned, including pretreatment processes such as raw materials, reaction, and separation, and post-treatment processes such as drying, screening, and packaging to ensure higher requirements for magnetic foreign matter control.

[0003] Currently, for the iron removal process in large-scale production of lithium-ion battery materials, the commonly used electromagnetic iron removers are expensive. The materials flow unidirectionally from top to bottom under the action of gravity and do not have the function of wireless cyclic iron removal. Both the electromagnet and the pipe wall are in a static state. The commonly used powder pipeline iron remover is the same as the above electromagnetic iron remover, except that the magnetic part of the pipeline iron remover is a permanent magnet iron remover. Similarly, the materials flow unidirectionally from top to bottom under the action of gravity and do not have the function of wireless cyclic iron removal. Both the electromagnet and the pipe wall are in a static state, and the materials cannot be in full contact with the magnetic rods. Only by increasing the number of magnetic rods or stacking multiple iron removers or increasing the iron removal times can the iron removal requirements be met. Some manufacturers have improved the powder pipeline iron remover by using a motor to drive the magnetic rods in the pipeline so that the magnetic rods can rotate. The advantage is that each magnetic rod can be in more sufficient contact with the materials, and the iron removal performance of each magnetic rod can be exerted. However, the pipe wall is still static, and the full contact is limited.

[0004] For small-batch production of lithium-ion battery materials and iron removers for laboratory use, there is currently no better and suitable solution. The existing solutions are as follows: one is to miniaturize mass production equipment to achieve the function of small-batch iron removal in the laboratory. Its disadvantage is that the price is expensive. If wireless cyclic iron removal is required, the iron removal requirements are met by increasing the number of magnetic rods or stacking multiple iron removers or increasing the iron removal times. The other is to simply manually stir the iron removal materials with magnetic rods. The disadvantages are that it is time-consuming and laborious, the effect is not good, and it is easily contaminated during the manual operation process. Summary of the Invention

[0005] In view of the deficiencies of the above-mentioned existing technologies, the present invention provides a small-batch permanent magnet iron removal device for laboratory use.

[0006] The present invention is realized by the following technical solutions.

[0007] A small-batch permanent magnet iron removal device for laboratory use, comprising a motor (1) and a speed reducer (2) connected in sequence. The output end of the speed reducer (2) has two output shafts, namely a first output shaft (3) and a second output shaft (4), and the output rotation directions of the first output shaft (3) and the second output shaft (4) are opposite to each other. The first output shaft (3) is fixed in the first support (6), and the second output shaft (4) is connected to the first gear (7) by interference fit through a keyway; the left end of the rotating housing (8) is fixed to the first support (6), the right end of the rotating housing (8) is fixed to the second support (11), the rotating housing (8) and the second gear (12) are an integral body, and it is connected to the first gear (7) through the second gear (12); a plurality of sleeves (13) are arranged in the cavity of the rotating housing (8). One end of the sleeve is fixed to the sleeve tray (14) by welding or bolts and forms an integral body with it. The sleeve tray (14) is connected to the first output shaft (3) by clearance fit through a sleeve spline (15); the other end of the sleeve is connected to a transition support (35) inside the second support (11) by a first quick-release bolt (32). The transition support (35) and the second support (11) are connected by a fourth bearing (20). One end of the magnetic bar (16) is placed inside the sleeve, and the other end is connected to the transition support (35) inside the second support (11) by a first quick-release bolt (32), forming an integral body of the sleeve (13), the magnetic bar (16), and the transition support (35), which rotates driven by the first output shaft (3); the main support (17) is connected to the third support (18) and the fourth support (19) through bearings, enabling the third support (18) and the fourth support (19) to rotate around the bearings; the first support (6), the second support (11), the third support (18), and the fourth support (19) are fixed by bolts or integrally formed to form a support structure that is fixed relative to the rotating housing (8) and the sleeve (13) and does not move.

[0008] Preferably, due to the gear matching design inside the speed reducer (2), the rotation directions of the first output shaft (3) and the second output shaft (4) are opposite, that is, when the first output shaft (3) rotates clockwise, the second output shaft (4) rotates counterclockwise, or when the first output shaft (3) rotates counterclockwise, the second output shaft (4) rotates clockwise.

[0009] Preferably, the second gear (12) is externally tangent to the first gear (7) for connection. The speed ratio range of the second gear (12) to the first gear (7) is 1:3 to 1:16. The rotating housing (8) and the magnetic bar (16) perform relative motion with a speed ratio of 1:3 to 1:16 and opposite rotation directions.

[0010] Preferably, the first output shaft (3) is fixed in the first support (6) through the first bearing (5), and the second output shaft (4) is connected to the first gear (7) by interference fit of a keyway; the left end of the rotating housing (8) is fixed to the first support (6) through the second bearing (9), and the right end of the rotating housing (8) is fixed to the second support (11) through the third bearing (10).

[0011] Preferably, the second support (11) includes an outer end and an inner end. The outer end of the second support (11) is connected and supported to the rotating housing (8) through the third bearing (10), and the inner end of the second support (11) is connected to the transition support (35) through the fourth bearing (20).

[0012] Preferably, third support end covers (21) and fourth support end covers (22) are provided on the outer sides of the third support (18) and the fourth support (19).

[0013] Preferably, the third support end cover (21) and the fourth support end cover (22) are fixed by bolt connection to the main support (17) through the bolt holes on the end covers; an annular slideway (23) is provided on the main support (17). The third support end cover (21) and the fourth support end cover (22) are located within the annular slideway (23). The periphery of the annular slideway has inclination markings, and the inclination angle of the motor reducer, the rotating cylinder, and the sleeve as a whole can be read through the pointers on the third support end cover (21) and the fourth support end cover (22).

[0014] Preferably, 4 universal wheels for supporting and moving the entire device are installed under the main support (17).

[0015] The beneficial technical effects of the present invention:

[0016] In the small-batch permanent magnet iron removal device for laboratory use of the present invention, the magnetic part (magnetic rod) and the cylinder part (rotating cylinder) rotate in opposite directions and move relative to each other in opposite directions, so that the material is fully agitated and the material is fully contacted with the magnetic part (magnetic rod). The closed space can perform iron removal on a unit amount of material in a cyclic manner. This device is inexpensive and has a high iron removal efficiency, and can meet the iron removal requirements for small-batch production and laboratory use of lithium-ion battery materials. Description of the Drawings

[0017] Figure 1 is the front view of the present invention;

[0018] Figure 2 is the side view of the present invention;

[0019] Figure 3 is the present invention Figure 2 in the A-A sectional view;

[0020] Figure 4 is the present inventionFigure 1 Sectional view B-B in

[0021] Figure 5 This invention shows the standby / awaiting material state with an inclination angle of -90 degrees.

[0022] Figure 6 This invention shows the usage / operation state with an inclination angle of 0 degrees.

[0023] Figure 7 This invention shows the shutdown and discharging state with an inclination angle of 90 degrees. Detailed implementation mode

[0024] The present invention will be described in detail below in conjunction with the specific implementation mode.

[0025] A small-batch permanent magnet iron removal device for laboratory use includes a motor 1 and a speed reducer 2 connected in sequence. The output end of the speed reducer 2 has two output shafts, namely a first output shaft 3 and a second output shaft 4, and the output rotation directions of the first output shaft 3 and the second output shaft 4 are opposite to each other. The first output shaft 3 is fixed in the first support 6 through the first bearing 5. The output end of the first output shaft 3 is connected with the tray 14 through a spline with a clearance fit. The second output shaft 4 is connected with the first gear 7 through an interference fit of a keyway.

[0026] There are lifters 24 arranged on the inner wall of the rotating shell 8 of the rotating shell. The left end of the rotating shell 8 is fixed on the first support 6 through the second bearing 9, and the right end of the rotating shell 8 is fixed on the second support 11 through the third bearing 10. The rotating shell 8 and the second gear 12 are an integral body, and it is connected with the first gear 7 through the second gear 12; the second gear 12 is externally tangent to the first gear 7 for connection, and the speed ratio range of the second gear 12 to the first gear 7 is 1:3 to 1:16. The rotating shell 8 and the magnetic rod 16 have a speed ratio of 1:3 to 1:16 and rotate in opposite directions. The rotating shell 8 is driven by the second output shaft 4 to rotate; there are multiple sleeves 13 arranged in the cavity of the rotating shell 8. One end of the sleeve is fixed to the sleeve tray 14 through welding or bolts and forms an integral body with it. The sleeve tray 14 is connected with the first output shaft 3 through a sleeve spline with a clearance fit; the other end of the sleeve is connected with the transition support 35 inside the second support 11 through the first quick-install bolt 32. The transition support 35 and the second support 11 are connected through the fourth bearing 20. One end of the magnetic rod 16 is placed inside the sleeve, and the other end is connected with the transition support 35 inside the second support 11 through the first quick-install bolt 32, forming an integral body of the sleeve 13, the magnetic rod 16, and the transition support 35.

[0027] The second support 11 includes an outer end and an inner end. The outer end of the second support 11 is connected and supported to the rotating housing 8 through the third bearing 10, and the inner end of the second support 11 is connected to the transition support 35 through the fourth bearing 20. The sleeve and the magnetic bar are integrated. The left end is fixed by the first bearing 5, and the right end is fixed by the fourth bearing 20. After removing the first quick-release bolt 32, holding the sleeve handle 29 can take out the sleeve and the magnetic bar together from the rotating housing 8 on the right side; then, holding the magnetic bar handle 30 can take out the magnetic bar from the sleeve on the right side. The transition support 35 of the sleeve 13, the magnetic bar 16, and the inner end of the second support 11 is integrated and rotates driven by the first output shaft 3. It is equivalent that the left end of this whole is fixedly supported by the first bearing 5, and the right end is fixedly supported by the fourth bearing 20.

[0028] The main support 17 is connected to the third support 18 and the fourth support 19 through the fifth bearing 25 and the sixth bearing 26, so that the third support 18 and the fourth support 19 can rotate around the bearings; the first support 6, the second support 11, the third support 18, and the fourth support 19 are fixed by bolts or integrally formed to form a supporting structure that is fixed relative to the rotating housing 8 and the sleeve 13.

[0029] The third support end cover 21 and the fourth support end cover 22 are provided on the outside of the third support 18 and the fourth support 19. The third support end cover 21 and the fourth support end cover 22 are bolted and fixed to the main support 17 through the bolt holes on the end covers; an annular slideway 23 is provided on the main support 17. The third support end cover 21 and the fourth support end cover 22 are located in the annular slideway 23. The periphery of the annular slideway has an inclination angle mark, and the inclination angle of the motor reducer, the rotating cylinder, and the sleeve as a whole can be read through the pointers on the third support end cover 21 and the fourth support end cover 22.

[0030] Four universal wheels for supporting and moving the whole device are installed under the main support 17.

[0031] Description of the usage process:

[0032] Equipment shutdown or material waiting state: In the standby state, due to the absence of materials, the center of gravity is biased towards the motor reducer end. At the same time, the third support end cover 21 and the fourth support end cover 22 are in a loose state through the second quick-release bolts 34 on the end covers. The machine body rotates around the fifth bearing 25 and the sixth bearing 26, and the motor reducer end naturally droops under gravity, and the inclination pointer 33 points to -90°.

[0033] Equipment feeding: When the equipment is stopped or waiting for materials, loosen the first quick-installation bolts 32 on the sleeve end cover 27 and the magnetic rod end cover 28. Hold the sleeve handle and the sleeve and the magnetic rod can be taken out from the rotating housing from the upper side together; after taking out, place it vertically upward, and then hold the magnetic rod handle and the magnetic rod can be taken out from the sleeve from the upper side; at the same time, clean the inside of the housing, the inner and outer sides of the sleeve and its end cover, the magnetic rod and its end cover; after cleaning, pour an appropriate amount of materials into the housing, then hold the magnetic rod handle and the magnetic rod can be sleeved into the sleeve from the upper side downward, hold the sleeve handle and the sleeve and the magnetic rod can be sleeved into the rotating housing from the upper side downward together, and then tighten the quick-installation bolts on the sleeve end cover and the magnetic rod end cover to connect the sleeve magnetic rod and the housing into one body and seal the housing; thus, the feeding is completed.

[0034] Equipment use or operation state: After the feeding is completed, adjust the equipment to the use or operation state, close the protective cover, then turn on the motor power supply, and adjust the motor frequency according to the process requirements, so as to adjust the rotation speed of the sleeve magnetic rod, and thus adjust the rotation speed of the rotating housing; at the same time, control the startup time according to the process requirements. Theoretically, the faster the rotation speed and the longer the time, the better the iron removal effect.

[0035] In the use or operation state, due to the presence of materials, the center of gravity of the machine body is balanced. At the same time, adjust the positions of the third support end cover 21 and the fourth support end cover 22 through the second quick-installation bolts 34 on the end covers, so that the machine body rotates around the fifth bearing 25 and the sixth bearing 26, the inclination of the machine body is horizontal, and the inclination pointer 33 points to 0°. At the same time, tighten the third support end cover 21 and the fourth support end cover 22 through the bolts on the end covers to keep the machine body horizontal; at the same time, when the equipment is running, make a protective cover outside the third support 18 and the fourth support 19 to cover the exposed rotating housing and the rotating third bearing 10 and the fourth bearing 20 to play a safety protection role.

[0036] Equipment shutdown and discharging state: In the shutdown and discharging state, due to the presence of materials, the center of gravity of the machine body is balanced. At the same time, adjust the positions of the third support end cover 21 and the fourth support end cover 22 through the second quick-installation bolts 34 on the end covers, so that the machine body rotates around the fifth bearing 25 and the sixth bearing 26, the port of the motor reducer is vertically upward, and the inclination pointer 33 points to 90°. At the same time, tighten the third support end cover 21 and the fourth support end cover 22 through the second quick-installation bolts 34 on the end covers to keep the port of the motor reducer of the machine body vertically upward.

[0037] When the equipment stops, discharges materials, and is cleaned, adjust the motor frequency to 0. After the rotating housing 8 stops, disconnect the motor power supply, and then open the protective cover; adjust the equipment to the shutdown or material waiting state, loosen the quick-install bolts on the sleeve end cover 27 and the magnetic rod end cover 28, and hold the sleeve handle to take out the sleeve 13 and the magnetic rod 16 together from the upper side of the rotating housing. Magnetic foreign objects are adsorbed on the outer wall of the sleeve due to the action of the magnetic rod. After taking it out, place it vertically upward; at this time, the housing port is opened, and the bag for collecting products is put on the housing port. Adjust the equipment to the shutdown and discharging state, and the finished product materials fall into the bag for collecting products due to gravity. After the sample collection is completed, remove the bag and seal it for subsequent steps; after the product collection is completed, deal with the waste materials. Hold the magnetic rod handle to take out the magnetic rod from the upper side of the sleeve. At this time, since the magnetic rod 16 is pulled out of the sleeve 13, the sleeve has no magnetic field, and the magnetic foreign objects adsorbed on the outer side of the sleeve lose their acting force and then fall into the sleeve tray 14. Clean the magnetic foreign objects in time; at the same time, clean the inside of the housing, the inner and outer sides of the sleeve and its end covers, the magnetic rod and its end covers; after cleaning, hold the magnetic rod handle to put the magnetic rod into the sleeve from the upper side downward, and hold the sleeve handle to put the sleeve and the magnetic rod into the rotating housing 8 from the upper side downward together, and then tighten the quick-install bolts on the sleeve end cover and the magnetic rod end cover to connect the sleeve magnetic rod and the housing into one body and seal the housing; thus, the discharging and cleaning are completed.

[0038] If the product is detected to be qualified, the next batch of materials can be processed; if not, the materials can be re-fed for iron removal.

[0039] The above are only the preferred embodiments of the present invention and do not limit the invention. It should be pointed out that for those of ordinary skill in the art, under the technical inspiration provided by the present invention, other equivalent improvements can also be made, which can all achieve the purpose of the present invention and should be regarded as the protection scope of the present invention.

Claims

1. A permanent magnet iron removal device for laboratory use, characterized in that, It includes a motor (1) and a speed reducer (2) connected in sequence. The output end of the speed reducer (2) has a first output shaft (3) and a second output shaft (4). The first output shaft (3) is fixed in the first support (6) through a first bearing (5). The second output shaft (4) is connected to the first gear (7) through interference fit of a keyway. The left end of the rotating housing (8) is fixed to the first support (6) through a second bearing (9), and the right end is fixed to the second support (11) through a third bearing (10). The rotating housing (8) is connected to the first gear (7) through a second gear (12). A plurality of sleeves (13) are arranged in the cavity of the rotating housing (8). One end of the sleeve is fixed to the sleeve tray (14). The sleeve tray (14) is connected to the first output shaft (3) through a clearance fit of a sleeve spline (15). The other end of the sleeve is connected to a transition support (35) inside the second support (11). The transition support (35) is connected to the second support (11). One end of the magnetic bar (16) is placed inside the sleeve, and the other end is connected to the transition support (35) inside the second support (11) through a first quick-install bolt (32). The main support (17) is connected to the third support (18) and the fourth support (19) through bearings, enabling the third support (18) and the fourth support (19) to rotate around the bearings. The first support (6), the second support (11), the third support (18), and the fourth support (19) are fixed by bolts or integrally formed, and are fixed support structures relative to the rotating housing (8) and the sleeve (13).

2. The permanent magnet iron removal device for laboratory use according to claim 1, characterized in that, The rotation directions of the first output shaft (3) and the second output shaft (4) are opposite.

3. The permanent magnet iron removal device for laboratory use according to claim 1, characterized in that, The second gear (12) is connected to the first gear (7) by external tangency. The speed ratio range of the second gear (12) to the first gear (7) is 1:3 to 1:

16. The rotating housing (8) and the magnetic bar (16) have a speed ratio of 1:3 to 1:16, and the rotation directions are opposite to each other.

4. The permanent magnet iron removal device for laboratory use according to claim 1, characterized in that, The second support (11) includes an outer end and an inner end. The outer end of the second support (11) is connected and supported to the rotating housing (8) through a third bearing (10). The inner end of the second support (11) is connected to the transition support (35) through a fourth bearing (20). The sleeve is connected to the transition support (35) inside the second support (11) through a first quick-install bolt (32).

5. The permanent magnet iron removal device for laboratory use according to claim 1, characterized in that, Third support end caps (21) and fourth support end caps (22) are provided on the outer sides of the third support (18) and the fourth support (19).

6. The permanent magnet iron removal device for laboratory use according to claim 3, characterized in that, The third support end cap (21) and the fourth support end cap (22) are fixed by bolt connection to the main support (17) through the bolt holes on the end caps. An annular slideway (23) is provided on the main support (17). The third support end cap (21) and the fourth support end cap (22) are located inside the annular slideway (23). The periphery of the annular slideway has an inclination mark. The inclination angle of the motor speed reducer, the rotating cylinder, and the sleeve as a whole can be read through the pointers on the third support end cap (21) and the fourth support end cap (22).

7. The permanent magnet iron removal device for laboratory use according to claim 1, characterized in that, Four universal wheels (31) for supporting and moving the entire device are installed under the main support (17).

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