Cooling and mixing device

Abstract

The utility model discloses a cooling mixing device which comprises a support, a rotating tank horizontally arranged on the support and a water cooling box body wrapping the rotating tank, a water inlet pipe is arranged at the upper end of the water cooling box body, a water accumulating jar and a water outlet pipe are arranged at the lower end of the water cooling box body, the water inlet pipe and the water outlet pipe are externally connected with a cooling-water machine, and a transverse water pipe located in the water cooling box body is arranged at the lower end of the water inlet pipe. The transverse water pipe is provided with a plurality of spraying heads facing the rotating tank, the rotating tank can rotate on the support, a mixing structure is arranged in the rotating tank, a feeding assembly is arranged at one end of the rotating tank, and a discharging assembly is arranged at the other end of the rotating tank. The cooling and mixing device replaces a slow cooling section production line and a cooling section production line of a traditional kiln, the occupied area is greatly reduced, energy consumption and loss are lower, the spraying head sprays water to cool the rotary tank, the cooling time is shorter, the mixing structure mixes internal materials while the rotary tank rotates, the cooling speed is further increased, and the production efficiency is improved. And the rotary tank replaces the labor cost of a sagger of a kiln in the traditional technology, so that the production cost is lower.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium battery powder processing equipment, specifically to a cooling and mixing device. Background Technology

[0002] Lithium battery powder needs to be purified to obtain higher purity lithium battery powder in order to improve the storage capacity of lithium batteries. At present, most lithium battery powder is heated in a kiln to evaporate impurities and exhaust waste gas, and then cooled before being discharged. For example, Chinese utility model patent application number 202110681868.2 discloses a gas-heated roller kiln for producing lithium battery materials. It includes a kiln body (1), a protective gas replacement chamber (2), a mechanical transmission device and an automatic control device. The kiln body (1) is divided into a heating section, a heat preservation section, a slow cooling section and a cooling section. A gas heating system is arranged in the heating section and the heat preservation section of the kiln body (1), and a self-preheating ejector radiant tube is used for gas heating. The burner is a combustion device. The burner is staggered in the upper and lower rows, symmetrically distributed at multiple points, and controlled by pulse timing in multiple zones. The exhaust pipe (8) and waste pipe (9) are set on the top of the kiln, and a stirring fan (22) is set on the top of each kiln section. The roller (3) is sealed with a sealing box, and the exposed parts of the sealing box on both sides are sealed with flanges. Water cooling device (10) and air cooling pipe (25) are set in the slow cooling section and cooling section of the kiln body (1). The protective gas replacement chamber (2) is set at both ends of the inlet and outlet of the kiln. It is sent into the furnace and transmission sealing cover through the protective gas pipe (7) and the bottom protective gas branch pipe (26) set below the kiln body (1) and the upper protective gas branch pipe (27). This type of gas-fired roller kiln for producing lithium battery materials has the following disadvantages: 1. The slow cooling section and the cooling section result in a long production line, requiring a large floor space, long cooling time, and high energy consumption; 2. The lithium battery powder raw material is cooled slowly in a sealed kiln, resulting in low efficiency; 3. The kiln has a limited lifespan, generally requiring replacement every three months, which increases production costs. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a cooling mixing device with smaller footprint, lower energy consumption, higher efficiency and lower production cost.

[0004] Therefore, this utility model is implemented using the following technical solution:

[0005] A cooling and mixing device is characterized by comprising a support, a rotating tank horizontally mounted on the support, and a water cooling box surrounding the rotating tank. The water cooling box has an inlet pipe at its upper end, a water collection basin and an outlet pipe at its lower end. The inlet and outlet pipes are connected to a chiller. The lower end of the inlet pipe has a transverse water pipe located inside the water cooling box. The transverse water pipe has several spray heads facing the rotating tank. The rotating tank can rotate on the support. The rotating tank has a mixing structure inside. One end of the rotating tank has a feeding assembly, and the other end of the rotating tank has a discharging assembly.

[0006] Furthermore, the upper left side of the water cooling box is connected to a cold air inlet pipe, and the right side is connected to a hot air outlet pipe.

[0007] Furthermore, the rotary tank has a feed cone on one side and a discharge cone on the other side. The feed cone is connected to the feed assembly, and the discharge cone is connected to the discharge assembly. The feed assembly includes a feed ring and a feed flange that are fixedly connected, and the discharge assembly includes a discharge ring and a discharge flange that are fixedly connected. The feed flange and the discharge flange are fixedly connected to the support. The feed ring is provided with a feed pipe, and the discharge ring is provided with a discharge hopper.

[0008] Furthermore, the feed cone is fitted with multiple cone sprockets, the support is equipped with a drive motor, the drive motor shaft is equipped with a motor sprocket aligned with the cone sprockets, the motor sprocket and the cone sprockets are connected by a chain for transmission, both the feed cone and the discharge cone are equipped with rings, and the support is equipped with multiple support rollers that can rest on the rings.

[0009] Furthermore, the hybrid structure includes a first helical blade and a second helical blade with opposite helical directions. The outer ring of the first helical blade is welded and fixed to the inner wall of the rotating tank. The outer diameter of the second helical blade is smaller than the inner diameter of the first helical blade. The outer ring of the second helical blade and the inner ring of the first helical blade are connected by several connecting rods. The discharge cone has a discharge port. The inner wall of the discharge cone is provided with multiple guide plates. The guide plates extend from the right end of the discharge cone to the discharge port. The guide plates are arc-shaped as a whole, and the angle between the guide plates and the inner wall of the discharge cone is an acute angle. The guide plates and the discharge cone form a feeding groove. The inner wall of the discharge flange is provided with a transition ring. The middle of the transition ring bulges inward to form a bend. One side of the transition ring smoothly transitions with the inner wall of the discharge cone, and the other side smoothly transitions with the inner wall of the discharge hopper. The discharge hopper has an isolation frame. The outer end of the isolation frame is provided with a cylinder. The drive rod of the cylinder is inserted into the discharge hopper. The other end of the drive rod is provided with a discharge tongue that can abut against the transition ring.

[0010] Furthermore, the feed pipe is connected to an air inlet pipe, the upper part of the discharge hopper is connected to an exhaust pipe, the feed ring is equipped with a temperature sensor inserted into the feed cone, the feed pipe is equipped with a differential pressure sensor, the exhaust pipe is equipped with an oxygen sensor, and both ends of the water cooling box are equipped with water baffles, and a high-temperature resistant sealing gasket is provided between the water baffles and the water cooling box, abutting against the feed cone and the discharge cone.

[0011] Furthermore, thin-walled bearings and multiple graphite packing seal assemblies are provided between the feed ring and the feed cone, and between the discharge ring and the discharge cone. The feed ring and the discharge ring are provided with oil passages that communicate with the corresponding graphite packing seal assemblies, and the oil passage inlets are equipped with oil injection nozzles.

[0012] Furthermore, the inner rings of the feed ring and the discharge ring are provided with multiple first grooves, and the feed cone and the discharge cone are provided with multiple second grooves that are misaligned and communicate with the first grooves. The feed ring and the discharge ring are provided with air passages that communicate with the outermost first groove, and the air passage inlet has an air injection nozzle.

[0013] After adopting the above technical solution, the cooling and mixing device mainly consists of a rotary tank and a water cooling box, which replaces the slow cooling section and cooling section production line of the traditional kiln. The footprint is greatly reduced, and the energy consumption and loss are also lower. Moreover, while the rotary tank is rotating, the spray head sprays water to cool the rotary tank, resulting in a shorter cooling time. At the same time as the rotary tank is rotating, the mixing structure mixes the internal materials, further improving the cooling speed and cooling efficiency. In addition, the rotary tank replaces the cost of the sagger of the traditional kiln, making the production cost lower. Attached Figure Description

[0014] The present invention includes the following figures:

[0015] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the right-side structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the first groove, the second groove, the air passage, etc. in this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the graphite packing sealing assembly, oil passage, and other structures in this utility model.

[0019] Reference numerals: 1. Cooling device; 2. Support; 3. Rotary tank; 4. Exhaust pipe; 5. Inlet pipe; 9. Water cooling box; 10. Water inlet pipe; 11. Water collection basin; 12. Water outlet pipe; 13. Horizontal water pipe; 14. Spray head; 16. Cold air inlet pipe; 17. Hot air outlet pipe; 18. Feeding cone; 19. Discharge cone; 20. Feeding ring; 21. Feeding flange; 22. Discharge ring; 23. Discharge flange; 24. Feeding pipe; 25. Discharge hopper; 26. Conical sprocket; 27. Drive motor; 28. Motor sprocket; 30. Ring; 31. 32. Support roller; 33. Thin-walled bearing; 34. Graphite packing seal assembly; 35. First helical blade; 36. Second helical blade; 37. Connecting rod; 48. Guide plate; 49. Temperature sensor; 40. Oxygen sensor; 41. Differential pressure sensor; 42. Water baffle; 43. High-temperature resistant gasket; 44. Oil passage; 45. Oil injector; 56. Discharge port; 57. Feed chute; 58. Transition ring; 59. Isolation frame; 50. Cylinder; 51. Drive rod; 52. Discharge tongue; 53. First groove; 54. Second groove; 65. Air passage; 66. Air injector. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0021] Referring to the above-mentioned figures, the cooling mixing device 1 provided by this utility model includes a support 2, a rotating tank 3 horizontally mounted on the support 2, and a water cooling box 9 enclosing the rotating tank 3. The water cooling box 9 has an inlet pipe 10 at its upper end, a water collection basin 11 at its lower end, and an outlet pipe 12. The inlet pipe 10 and the outlet pipe 12 are connected to a chiller. The lower end of the inlet pipe 10 has a horizontal water pipe 13 located inside the water cooling box 9. The horizontal water pipe 13 has several spray heads 14 facing the rotating tank 3. The rotating tank 3 can rotate on the support 2. The rotating tank 3 has a mixing structure inside, and one end of the rotating tank 3 has a feeding component, and the other end of the rotating tank 3 has a discharging component. The upper left side of the water cooling box 9 is connected to a cold air inlet pipe 1. 6. A hot air outlet pipe 17 is connected to the right side. The rotating tank 3 has a feeding cone 18 on one side and a discharging cone 19 on the other side. The feeding cone 18 is connected to the feeding assembly, and the discharging cone 19 is connected to the discharging assembly. The feeding assembly includes a fixedly connected feeding ring 20 and a feeding flange 21. The discharging assembly includes a fixedly connected discharging ring 22 and a discharging flange 23. The feeding flange 21 and the discharging flange 23 are fixedly connected to the support 2. The feeding ring 20 is provided with a feeding pipe 24, and the discharging ring 22 is provided with a discharging hopper 25. Multiple inclined cone sprockets 26 are sleeved on the feeding cone 18. The support 2 is provided with a drive motor 27, and the shaft of the drive motor 27 is provided with a motor sprocket aligned with the inclined cone sprockets 26. 28. The motor sprocket 28 and the inclined cone sprocket 26 are connected by a chain for transmission. Both the feed cone 18 and the discharge cone 19 are provided with rings 30. The support 2 is provided with multiple rollers 31 that can abut against the rings 30. The hybrid structure includes a first helical blade 37 and a second helical blade 38 with opposite helical directions. The outer ring of the first helical blade 37 is welded and fixed to the inner wall of the rotating tank 3. The outer diameter of the second helical blade 38 is smaller than the inner diameter of the first helical blade 37. The outer ring of the second helical blade 38 and the inner ring of the first helical blade 37 are connected by several connecting rods 39. The discharge cone 19 has a discharge port 51. The inner wall of the discharge cone 19 is provided with multiple guide plates 40. The guide plates 40 extend from the right end of the discharge cone 19 to the outlet. At the feed inlet 51, the guide plate 40 is arc-shaped, and the angle between the guide plate 40 and the inner wall of the discharge cone 19 is acute. The guide plate 40 and the discharge cone 19 form a feeding groove 52. The inner wall of the discharge flange 23 is provided with a transition ring 53. The transition ring 53 bulges inward in the middle to form a bend. One side of the transition ring 53 smoothly transitions with the inner wall of the discharge cone 19, and the other side smoothly transitions with the inner wall of the discharge hopper 25. The discharge hopper 25 has an isolation frame 54. The outer end of the isolation frame 54 is provided with a cylinder 55. The drive rod 56 of the cylinder 55 is inserted into the discharge hopper 25. The other end of the drive rod 56 is provided with a discharge tongue 57 that can abut against the transition ring 53. This structure of the guide plate 40 facilitates the conveying of lithium battery powder to the discharge hopper 25.When the rotary tank 3 rotates in the forward direction, the first helical blade 37 conveys the lithium battery powder raw material towards the feed cone 18, and the second helical blade 38 conveys the lithium battery powder raw material towards the discharge cone 19, making the lithium battery powder raw material in the rotary tank 3 more evenly mixed. When the rotary tank 3 rotates in the reverse direction, the first helical blade 37 conveys the lithium battery powder raw material towards the discharge cone 19, and then it is conveyed by the guide plate 40 to the discharge hopper 25. The feed pipe 24 is connected to the air inlet pipe 5, and the discharge hopper 25 is... The rotating tank 3 is connected to an exhaust pipe 4. A temperature sensor 41 is installed on the feed ring 20 and inserted into the feed cone 18. A differential pressure sensor 43 is installed on the feed pipe 24. An oxygen sensor 42 is installed on the exhaust pipe 4. Water baffles 44 are installed at both ends of the water cooling tank 9. A high-temperature resistant sealing gasket 45 is installed between the water baffles 44 and the water cooling tank 9, abutting against the feed cone 18 and the discharge cone 19. The temperature sensor 41 is used to detect the temperature inside the rotating tank 3, and the oxygen sensor 42 is used for… The oxygen content inside the rotating tank 3 is detected, and the pressure inside the rotating tank 3 is controlled according to the signal from the differential pressure sensor 43. Thin-walled bearings 32 and multiple graphite packing seal assemblies 33 are provided between the feed ring 20 and the feed cone 18, and between the discharge ring 22 and the discharge cone 19. The graphite packing seal assembly 33 is mainly made of graphite wire reinforced with various reinforcing fibers and metal wires (steel wire, copper wire, nickel wire, carbon fiber, pre-oxidized fiber, glass yarn, etc.) as raw materials, and is suitable for dynamic sealing under high temperature and high pressure conditions. The feed ring 20 and discharge ring 22 are provided with oil passages 47 that communicate with the corresponding graphite packing sealing assembly 33. The inlet of the oil passage 47 has an oil injection nozzle 48. The inner rings of both the feed ring 20 and discharge ring 22 are provided with multiple first grooves 58. The feed cone 18 and discharge cone 19 are each provided with multiple second grooves 59 that are offset from and communicate with the first grooves 58. The feed ring 20 and discharge ring 22 are provided with air passages 60 that communicate with the outermost first groove 58. The inlet of the air passage 60 has an air injection nozzle 61.

[0022] The working principle of this utility model is as follows:

[0023] The drive motor 27 starts and drives the feeding cone 18, rotating tank 3 and discharging cone 19 to rotate in the forward direction. The water inlet pipe 10 delivers cold water to the horizontal water pipe 13 and sprays it onto the outer surface of the feeding cone 18, rotating tank 3 and discharging cone 19 through the spray head 14 to cool the high-temperature lithium battery powder in the rotating tank 3. At the same time, the cold air inlet pipe 16 inputs cold air into the cooling box and the hot air outlet pipe 17 discharges the hot air from the cooling box until the lithium battery powder is completely cooled. The drive motor 27 of the cooling device 1 reverses and drives the feeding cone 18, rotating tank 3 and discharging cone 19 to rotate in the opposite direction. It also drives the cylinder 55 to open the discharge tongue 57 of the cooling device 1. The cooled lithium battery powder is lifted by the guide plate 40 to the discharge ring 22 and discharged through the discharge hopper 25.

[0024] In this embodiment, the cooling and mixing device mainly consists of a rotary tank 3 and a water-cooled box 9, replacing the slow cooling section and cooling section of the traditional kiln production line. This significantly reduces the floor space required and lowers energy consumption and losses. Furthermore, while the rotary tank 3 rotates, the spray nozzles 14 spray water onto it for cooling, resulting in a shorter cooling time. Simultaneously, the mixing structure mixes the internal materials, further increasing the cooling speed and efficiency. The rotary tank 3 also replaces the traditional kiln's sagger, reducing production costs. The air inlet duct 16 and the hot air outlet duct 17 further accelerate the cooling of the high-temperature lithium battery powder in the rotating tank 3; the water baffle ring 44 and the high-temperature resistant sealing gasket 45 improve the sealing performance of the water cooling box 9; lubricating oil is periodically injected into the oil passage 47 through the oil injector 48, thereby keeping the graphite packing assembly lubricated and improving its service life; the discharge cone 19 does not discharge material when rotating forward, but when the discharge cone 19 rotates in reverse, the material will enter the feeding trough 52 and move towards the discharge port 51 for discharge. Due to the overall guide plate 40 The curved shape allows the feeding trough 52 to hold more material, increasing the discharge speed. The material slides down to the bottom of the curved feeding trough 52 due to its own weight. As the discharge cone 19 continuously reverses direction, the bottom of the curved feeding trough 52 constantly changes, causing the material to consistently tend to slide towards the discharge port 51, further accelerating the discharge speed. The transition ring 53 on the inner wall of the discharge flange 23 bulges inward in the middle, forming a bend. One side of the transition ring 53 smoothly transitions with the inner wall of the discharge cone 19, while the other side transitions with the inner wall of the discharge hopper 25. The smooth transition effectively prevents material from accumulating on the inner wall of the discharge flange 23, thus avoiding affecting the sealing performance and ensuring more thorough discharge. The drive cylinder 55 can move the discharge tongue 57 left and right. When the material is mixed, the discharge tongue 57 moves to the right so that it abuts against the transition ring 53 to seal the discharge port 51. When discharging, the discharge tongue 57 moves to the left to disengage from the transition ring 53. The structure is stable and reliable. The isolation frame 54 keeps the cylinder 55 away from the rotating tank 3, preventing the cylinder 55 from operating in a high-temperature environment for a long time, thereby improving its service life.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A cooling mixing device, characterized in that: The device includes a support, a horizontally mounted rotating tank on the support, and a water cooling box surrounding the rotating tank. The water cooling box has an inlet pipe at the upper end, a water collection basin and an outlet pipe at the lower end. The inlet and outlet pipes are connected to a chiller. The lower end of the inlet pipe has a horizontal water pipe located inside the water cooling box. The horizontal water pipe has several spray heads facing the rotating tank. The rotating tank can rotate on the support. The rotating tank has a mixing structure inside. One end of the rotating tank has a feeding component and the other end has a discharging component.

2. The cooling mixing device according to claim 1, characterized in that: The upper left side of the water cooling box is connected to a cold air inlet pipe, and the right side is connected to a hot air outlet pipe.

3. A cooling mixing device according to claim 1 or 2, characterized in that: The rotating tank has a feed cone on one side and a discharge cone on the other side. The feed cone is connected to the feed assembly, and the discharge cone is connected to the discharge assembly. The feed assembly includes a feed ring and a feed flange that are fixedly connected. The discharge assembly includes a discharge ring and a discharge flange that are fixedly connected. The feed flange and the discharge flange are fixedly connected to the support. The feed ring is provided with a feed pipe, and the discharge ring is provided with a discharge hopper.

4. A cooling mixing device according to claim 3, characterized in that: The feed cone is fitted with multiple cone sprockets, the support is equipped with a drive motor, and the drive motor shaft is equipped with a motor sprocket aligned with the cone sprockets. The motor sprocket and the cone sprockets are connected by a chain for transmission. Both the feed cone and the discharge cone are equipped with rings, and the support is equipped with multiple support rollers that can rest on the rings.

5. A cooling mixing device according to claim 3, characterized in that: The hybrid structure includes a first helical blade and a second helical blade with opposite helical directions. The outer ring of the first helical blade is welded and fixed to the inner wall of the rotating tank. The outer diameter of the second helical blade is smaller than the inner diameter of the first helical blade. The outer ring of the second helical blade and the inner ring of the first helical blade are connected by several connecting rods. The discharge cone has a discharge port. The inner wall of the discharge cone is provided with multiple guide plates. The guide plates extend from the right end of the discharge cone to the discharge port. The guide plates are arc-shaped and the angle between the guide plates and the inner wall of the discharge cone is acute. The guide plates and the discharge cone form a feeding groove. The inner wall of the discharge flange is provided with a transition ring. The middle of the transition ring bulges inward to form a bend. One side of the transition ring smoothly transitions with the inner wall of the discharge cone, and the other side smoothly transitions with the inner wall of the discharge hopper. The discharge hopper has an isolation frame. The outer end of the isolation frame is provided with a cylinder. The drive rod of the cylinder is inserted into the discharge hopper. The other end of the drive rod is provided with a discharge tongue that can abut against the transition ring.

6. A cooling mixing device according to claim 4, characterized in that: The feed pipe is connected to an air inlet pipe, the upper part of the discharge hopper is connected to an exhaust pipe, the feed ring is equipped with a temperature sensor inserted into the feed cone, the feed pipe is equipped with a differential pressure sensor, the exhaust pipe is equipped with an oxygen sensor, the left and right ends of the water cooling box are equipped with water baffles, and a high-temperature resistant sealing gasket is provided between the water baffles and the water cooling box to abut against the feed cone and the discharge cone.

7. A cooling mixing device according to claim 4, characterized in that: Thin-walled bearings and multiple graphite packing seal assemblies are provided between the feed ring and the feed cone, and between the discharge ring and the discharge cone. The feed ring and the discharge ring are provided with oil passages that communicate with the corresponding graphite packing seal assemblies, and the oil passage inlets are equipped with oil injection nozzles.

8. A cooling mixing device according to claim 4, characterized in that: The inner rings of the feed ring and the discharge ring are each provided with multiple first grooves. The feed cone and the discharge cone are each provided with multiple second grooves that are offset from and communicate with the first grooves. The feed ring and the discharge ring are provided with air passages that communicate with the outermost first groove. The air passage inlet is provided with an air injection nozzle.

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