Novel rotary crystallization dryer

Abstract

The utility model relates to a novel rotary crystallization dryer. The crystallization dryer comprises a body and a feeding and discharging spiral conveyor, the feeding and discharging spiral conveyor is rotationally installed on the body and comprises a shell, the shell is rotationally installed on the body, an auger is rotationally installed in the shell, one end of the shell is located in the body, and the other end of the shell is located outside the body. A driving mechanism for driving the auger to rotate is arranged at the end, located outside the body, of the shell, a feeding pipe is arranged on the upper side of the end, located inside the body, of the shell, a discharging pipe is arranged on the lower side of the end, located outside the body, of the shell, a feeding pipe is arranged on the upper side of the end, located outside the body, of the shell, and a discharging pipe is arranged on the lower side of the end, located outside the feeding pipe, of the shell. And the feeder is in transmission connection with a rotating shaft of the auger through a transmission mechanism. According to the novel rotary crystallization dryer, the production efficiency can be greatly improved, and the production safety is improved. The crystallization device can avoid accumulation of crystallization raw materials and is beneficial to discharge of the crystallization raw materials.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium hexafluorophosphate production equipment, and particularly relates to a novel rotary crystallization dryer. Background Art

[0002] As the most widely commercially used lithium-ion battery electrolyte, lithium hexafluorophosphate has good ionic conductivity and electrochemical stability, becoming the core raw material for producing lithium-ion battery electrolytes, accounting for about 43% of the total cost of electrolytes. With the rapid development of the new energy industry, its market demand has increased sharply, and the development prospect is good.

[0003] The novel rotary crystallization dryer is commonly used in the crystallization and drying processes of lithium hexafluorophosphate. During the rotation of the novel rotary crystallization dryer, the internal material is continuously turned up and down, and the heat conduction with the inner wall of the equipment is fully and continuously updated, so that rapid heat transfer drying or cooling with cold quantity of the material can be realized. After the material reaches the drying or crystallization purpose, the equipment needs to stop rotating, and the material is discharged manually by connecting the pipe orifice.

[0004] The Chinese utility model patent with the authorization announcement number CN218686495U discloses a novel rotary crystallization drying system, which includes a rotary novel rotary crystallization dryer and a screw conveyor. One end of the screw conveyor is arranged inside the rotary novel rotary crystallization dryer, and the rotary novel rotary crystallization dryer rotates relative to the screw conveyor. The rotary novel rotary crystallization dryer is used to synthesize crystals from raw materials. A material guiding component is arranged between the rotary novel rotary crystallization dryer and the screw conveyor, and the material guiding component is used to send the crystals inside the rotary novel rotary crystallization dryer into the screw conveyor. The screw conveyor is used to supply raw materials to the novel rotary crystallization dryer and discharge the crystalline material from the rotary novel rotary crystallization dryer. However, during the use of this system, when feeding raw materials into the novel rotary crystallization dryer through the screw conveyor, since the discharge port is directly below the feeding port, the raw materials are likely to fall from the discharge port. In addition, when the crystals fall into the feeding port, they are likely to accumulate in the feeding port and cause blockage, affecting the discharge. Summary of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides a novel rotary crystallization dryer.

[0006] The technical solution of a novel rotary crystallization dryer of the utility model is as follows:

[0007] A novel rotary crystallization dryer comprises a main body and a feed and discharge screw conveyor, wherein the feed and discharge screw conveyor is rotatably mounted on the main body, and the feed and discharge screw conveyor comprises a shell, wherein the shell is rotatably mounted on the main body, an auger is rotatably mounted in the shell, one end of the shell is located inside the main body, and the other end is located outside the main body, and the end of the shell located outside the main body is provided with a driving mechanism for driving the auger to rotate, a feed pipe is provided on the upper side of the end of the shell located inside the main body, and a discharge pipe is provided on the lower side, a feed pipe is provided on the upper side of the end of the shell located outside the main body, and a discharge pipe is provided on the lower side, the discharge pipe is located inside the feed pipe, and the discharge pipe is located outside the feed pipe, a feeder is rotatably mounted in the feed pipe, and the feeder is transmission-connected to the rotating shaft of the auger through a transmission mechanism.

[0008] Furthermore, the central axis of the feeder extends inwardly to the inside of the shell, and a fixed plate is provided on the shell. The central axis of the feeder is rotatably mounted on the fixed plate through a bearing. The transmission mechanism includes a driving gear and a driven gear meshing with the driving gear. The rotating shaft of the auger extends to the inside of the shell, and the driven gear is fixedly connected to the end of the central axis of the feeder. The driving gear is fixedly connected to the rotating shaft of the auger.

[0009] Furthermore, a feeding hopper is provided at the upper end of the feeding pipe, and the feeding hopper is trumpet-shaped.

[0010] Furthermore, the driving mechanism includes a driving motor, a driving pulley, a driven pulley and a synchronous belt. The rotating shaft of the auger extends outward to the outside of the shell. The driving pulley is fixedly connected to the output shaft end of the driving motor, and the driven pulley is fixedly connected to the rotating shaft of the auger. The synchronous belt is wrapped around the driving pulley and the driven pulley.

[0011] Furthermore, the main body includes a crystallization drying cylinder, a support tube is provided on one side of the crystallization drying cylinder, a support assembly and a power assembly are provided outside the support tube, the crystallization drying cylinder performs rotational motion between the support assembly and the inlet and outlet screw conveyor, and the power assembly is used to drive the crystallization drying cylinder to perform rotational motion.

[0012] Furthermore, the crystallization drying cylinder is provided with a first conical pipe and a second conical pipe, the outside of the second conical pipe is connected to a drain pipe assembly, the drain pipe assembly includes a first drain pipe, the first drain pipe is connected to the second conical pipe, the crystallization drying cylinder and the support tube are provided with a second drain pipe, the second drain pipe is connected to the first drain pipe.

[0013] Furthermore, the support assembly includes a bearing and a bearing seat, the support tube and the bearing seat are connected via a bearing, and the outside of the bearing seat is fixedly connected to a bracket.

[0014] Further, a material guiding assembly for guiding the crystals in the first conical pipe into the feeding pipe is provided on the crystallization drying cylinder. The material guiding assembly includes a grate and a material guiding chute. The grate is arranged at the end of the first conical pipe, and the material guiding chute is arranged at one end of the first conical pipe where the grate is provided.

[0015] The utility model provides a novel rotary crystallization dryer, and its beneficial effects are as follows:

[0016] By arranging the feeding and discharging screw conveyor, the novel rotary crystallization dryer of the utility model can discharge the crystal material from the novel rotary crystallization dryer without stopping the rotation after the lithium hexafluorophosphate crystals are dried. This can not only greatly improve the production efficiency, but also realize the continuous operation of production, reduce manual operation, improve the stability of product quality, and improve the production safety. When the screw conveyor rotates forward, the auger can convey the raw material to be crystallized and dried into the crystallization drying cylinder. During the feeding process, since the discharge pipe is outside the feeding pipe, the raw material will not fall from the discharge pipe. When the screw conveyor rotates reversely, the auger can discharge the crystal raw material entering from the feeding pipe. During this process, the auger can drive the feeder to rotate, and the feeder can stir the crystal raw material in the feeding pipe, avoiding the accumulation of crystal raw material and helping the crystal raw material to be discharged. Description of the Drawings

[0017] Figure 1 is a cross-sectional schematic view of the novel rotary crystallization dryer of the utility model;

[0018] Figure 2 is a schematic structural view of the novel rotary crystallization dryer of the utility model;

[0019] Figure 3 is Figure 1 is a schematic view of the feeding and discharging screw conveyor in the novel rotary crystallization dryer of the utility model;

[0020] Figure 4 is Figure 3 an enlarged view of part A in

[0021] In the figure: 1, crystallization drying cylinder; 2, support pipe; 3, first conical pipe; 4, second conical pipe; 5, first drain pipe; 6, second drain pipe; 7, feeding and discharging screw conveyor; 8, grate; 9, housing; 10, auger; 11, feeding pipe; 12, discharge pipe; 13, feeding pipe; 14, discharge pipe; 15, feeding hopper; 16, drive motor; 17, driving belt pulley; 18, driven belt pulley; 19, synchronous belt; 20, feeder; 21, fixing plate; 22, driving gear; 23, driven gear. Detailed Embodiments

[0022] The following further describes the present utility model in detail in conjunction with the drawings and specific embodiments:

[0023] The specific embodiment of the novel rotary crystallization dryer of the utility model is as follows: Figures 1 to 4 As shown, it includes a main body and a feed-in and feed-out screw conveyor 7, which is rotatably installed on the main body. The feed-in and feed-out screw conveyor 7 includes a shell 9, which is rotatably installed on the main body. An auger 10 is rotatably installed in the shell 9, one end of the shell 9 is located inside the main body, and the other end is located outside the main body. The end of the shell 9 located outside the main body is provided with a driving mechanism for driving the auger 10 to rotate, a feed pipe 13 is provided on the upper side of the end of the shell 9 located inside the main body, and a discharge pipe 14 is provided on the lower side, a feed pipe 11 is provided on the upper side of the end of the shell 9 located outside the main body, and a discharge pipe 12 is provided on the lower side, the discharge pipe 14 is located on the inner side of the feed pipe 13, and the discharge pipe 12 is located on the outer side of the feed pipe 11, a feeder 20 is rotatably installed in the feed pipe 13, and the feeder 20 is transmission connected to the rotating shaft of the auger 10 through a transmission mechanism.

[0024] The central axis of the feeder 20 extends inward to the inside of the housing 9, and a fixing plate 21 is provided on the housing 9. The central axis of the feeder 20 is rotatably mounted on the fixing plate 21 through a bearing. The transmission mechanism includes a driving gear 22 and a driven gear meshing with the driving gear 22. The rotating shaft of the auger 10 extends to the inside of the housing 9, and the driven gear 23 is fixedly connected to the end of the central axis of the feeder 20. The driving gear 22 is fixedly connected to the rotating shaft of the auger 10. A feed hopper 15 is provided at the upper end of the feed pipe 13, and the feed hopper 15 is trumpet-shaped.

[0025] The driving mechanism includes a driving motor 16, a driving pulley 17, a driven pulley 18 and a synchronous belt 19. The rotating shaft of the auger 10 extends outward to the outside of the housing 9. The driving pulley 17 is fixedly connected to the output shaft end of the driving motor 16. The driven pulley 18 is fixedly connected to the rotating shaft of the auger 10. The synchronous belt 19 is wrapped around the driving pulley 17 and the driven pulley 18. The body includes a crystallization drying cylinder 1. A support tube 2 is provided on one side of the crystallization drying cylinder 1. A support assembly and a power assembly are provided outside the support tube 2. The crystallization drying cylinder 1 performs a rotary motion between the support assembly and the inlet and outlet screw conveyor 7. The power assembly is used to drive the crystallization drying cylinder 1 to perform a rotary motion. The crystallization drying cylinder 1 is provided with a first conical tube 3 and a second conical tube 4. The outside of the second conical tube 4 is connected with a drainage pipe assembly, which includes a first drainage pipe 5. The first drainage pipe 5 is connected to the second conical tube 4. A second drainage pipe 6 is provided in the crystallization drying cylinder 1 and the support tube 2, and the second drainage pipe 6 is connected to the first drainage pipe 5.

[0026] The support assembly includes a bearing and a bearing housing. The support tube 2 is connected to the bearing housing through a bearing, and a bracket is fixedly connected to the outside of the bearing housing. A material guiding assembly for guiding the crystals in the first conical tube 3 into the feeding tube 13 is provided on the crystallization drying cylinder 1. The material guiding assembly includes a grate 8 and a material guiding chute. The grate 8 is arranged at the end of the first conical tube 3, and the material guiding chute is arranged at one end of the first conical tube 3 where the grate 8 is provided.

[0027] Through the setting of the feeding and discharging screw conveyor 7, the novel rotary crystallization dryer of the present utility model can export the crystal material from the novel rotary crystallization dryer without stopping the rotation after the crystallization drying of lithium hexafluorophosphate, which can not only greatly improve the production efficiency, but also realize the continuous operation of production, reduce manual operation, improve the stability of product quality, and improve the production safety. When the screw conveyor rotates forward, the auger 10 can convey the raw material to be crystallized and dried into the crystallization drying cylinder 1. During the feeding process, since the discharge pipe 12 is outside the feeding pipe 11, the raw material will not fall from the discharge pipe 12. When the screw conveyor rotates in the reverse direction, the auger 10 can discharge the crystal raw material entering from the feeding pipe 13. During this process, the auger 10 can drive the feeder 20 to rotate, and the feeder 20 can stir the crystal raw material in the feeding pipe 13, avoiding the accumulation of the crystal raw material and helping the discharge of the crystal raw material.

[0028] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A novel rotary crystallization dryer, comprising a main body and an inlet and outlet screw conveyor, wherein the inlet and outlet screw conveyor is rotatably mounted on the main body, characterized in that: The feed and discharge screw conveyor includes a shell, which is rotatably mounted on the main body, and an auger is rotatably mounted in the shell. One end of the shell is located inside the main body, and the other end is located outside the main body. The end of the shell located outside the main body is provided with a driving mechanism for driving the auger to rotate. A feed pipe is provided on the upper side of the end of the shell located inside the main body, and a discharge pipe is provided on the lower side. A feed pipe is provided on the upper side of the end of the shell located outside the main body, and a discharge pipe is provided on the lower side. The discharge pipe is located on the inner side of the feed pipe, and the discharge pipe is located on the outer side of the feed pipe. A feeder is rotatably mounted in the feed pipe, and the feeder is transmission-connected to the rotating shaft of the auger through a transmission mechanism.

2. The novel rotary crystallization dryer according to claim 1 is characterized in that: The central axis of the feeder extends inwardly to the inside of the shell, and a fixed plate is provided on the shell. The central axis of the feeder is rotatably mounted on the fixed plate through a bearing. The transmission mechanism includes a driving gear and a driven gear meshing with the driving gear. The rotating shaft of the auger extends to the inside of the shell, and the driven gear is fixedly connected to the end of the central axis of the feeder. The driving gear is fixedly connected to the rotating shaft of the auger.

3. The novel rotary crystallization dryer according to claim 2 is characterized in that: A feeding hopper is arranged at the upper end of the feeding pipe, and the feeding hopper is trumpet-shaped.

4. The novel rotary crystallization dryer according to claim 1 is characterized in that: The driving mechanism includes a driving motor, a driving pulley, a driven pulley and a synchronous belt. The rotating shaft of the auger extends outward to the outside of the shell. The driving pulley is fixedly connected to the end of the output shaft of the driving motor, and the driven pulley is fixedly connected to the rotating shaft of the auger. The synchronous belt is wrapped around the driving pulley and the driven pulley.

5. The novel rotary crystallization dryer according to claim 1 is characterized in that: The main body includes a crystallization drying cylinder, a support tube is provided on one side of the crystallization drying cylinder, a support assembly and a power assembly are provided outside the support tube, the crystallization drying cylinder performs rotational motion between the support assembly and the inlet and outlet screw conveyor, and the power assembly is used to drive the crystallization drying cylinder to perform rotational motion.

6. The novel rotary crystallization dryer according to claim 5 is characterized in that: The crystallization drying cylinder is provided with a first conical pipe and a second conical pipe, the outside of the second conical pipe is connected to a drain pipe assembly, the drain pipe assembly includes a first drain pipe, the first drain pipe is connected to the second conical pipe, the crystallization drying cylinder and the support pipe are provided with a second drain pipe, the second drain pipe is connected to the first drain pipe.

7. The novel rotary crystallization dryer according to claim 5 is characterized in that: The support assembly includes a bearing and a bearing seat. The support tube is connected to the bearing seat via a bearing, and the outside of the bearing seat is fixedly connected to a bracket.

8. The novel rotary crystallization dryer according to claim 5 is characterized in that: The crystallization drying cylinder is provided with a material guide component for guiding the crystals in the first cone pipe into the feed pipe. The material guide component includes a grate and a material guide chute. The grate is arranged at the end of the first cone pipe, and the material guide chute is arranged at one end of the first cone pipe where the grate is arranged.

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