Solid-liquid separation device
By combining a suspension treatment tank and a solvent storage tank, and utilizing components such as a filter layer and a scraper, the solid content of the suspension is increased, solving the problem of low solid content in the suspension and achieving efficient operation of the equipment and reduced energy consumption.
Patent Information
- Application Number
- CN202422608521.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-10-28
AI Technical Summary
The low liquid-solid content of existing solid-state battery precursor materials leads to frequent start-ups and shutdowns of centrifugal separation equipment, limited processing capacity, high energy consumption, and low equipment operating efficiency.
The system employs a suspension treatment tank and a solvent storage tank, and is equipped with components such as a filter layer, drive motor, scraper paddle, and filter element. By allowing the suspension to settle and filtration, the solid content of the suspension is increased, while the processing capacity and energy consumption of the centrifuge are reduced.
It increases the solid content of the suspension, reduces the equipment footprint and energy consumption, reduces the number of centrifuge start-ups and shutdowns, and improves the solid-liquid separation effect and equipment efficiency.
Smart Images
Figure CN223602177U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to solid -liquid separation device technical field, specifically, relate to a solid -liquid separation device. BACKGROUND
[0002] The new energy field pays attention to the research and development of solid-state batteries, and the solid-state battery industry has also risen on a large scale. In the production process of the precursor material of the full solid-state sulfide used in the solid-state battery, the precursor material needs to be crushed (wet grinding), filtered, dried, and the like.
[0003] At present, the solid-liquid separation method of the solid-state battery precursor material mainly includes the precipitation method, the filtration method and the centrifugal method. The centrifugal method uses centrifugal force to separate solid and liquid. However, in the existing production process, the precursor (raw powder) of the electrolyte is dosed and mixed (primary crushing) to obtain a suspension after homogenization and wet grinding. Due to the equipment operation requirements of the previous process, the solid content of the produced suspension is only 20%-30%, or even lower. If the suspension directly enters the centrifugal separator for separation, the centrifugal separation equipment will frequently start and stop, add material, and scrape material, resulting in low equipment operation efficiency; and the processing capacity of the equipment is limited and the energy consumption is high.
[0004] Therefore, it is necessary to consider a more optimized suspension treatment method. INVENTION CONTENTS
[0005] The main purpose of the utility model is to provide a solid-liquid separation device which can improve the solid content of the suspension, reduce the processing capacity of the subsequent centrifugal separator, improve the work efficiency, and thus reduce the energy consumption and the equipment cost.
[0006] In order to achieve the above-mentioned main purpose, the solid-liquid separation device provided by the utility model comprises a suspension treatment tank and a solvent storage tank. The suspension treatment tank comprises a tank body, a suspension liquid inlet, a suspension liquid outlet, a solvent liquid outlet and a filter layer. The filter layer is located in the solution cavity of the tank body and separates the solution cavity into a clear liquid cavity and a turbid liquid cavity. The suspension liquid inlet and the suspension liquid outlet are both communicated with the turbid liquid cavity, the solvent liquid outlet is communicated with the clear liquid cavity, and the solvent liquid outlet is also communicated with the liquid inlet of the solvent storage tank.
[0007] As can be seen from the above scheme, the solid-liquid separation device of the utility model can improve the solid content of the suspension, reduce the land occupation of the equipment, improve the solid-liquid separation effect, reduce the start-stop frequency of the subsequent centrifugal machine, reduce the processing capacity of the centrifugal machine, reduce the energy consumption, and reduce the equipment cost.
[0008] In a further aspect, the filter layer is floatingly arranged in the solution cavity.
[0009] Therefore, the filter layer is floatingly arranged in the solution cavity, and can improve the settling speed of the fine particles with the suspension liquid level in the tank body floating up and down.
[0010] In a further aspect, the suspension liquid treatment tank further comprises a driving motor, a spline shaft and a scraping paddle, the driving motor is installed on the top of the tank body, the driving motor and the spline shaft are drivingly connected, the spline shaft is inserted into the solution cavity from the top of the tank body, and the scraping paddle is installed on one end of the spline shaft in the solution cavity; the filter layer is installed on the spline shaft and is arranged in the axial direction of the spline shaft.
[0011] Therefore, the driving motor, the spline shaft and the scraping paddle are arranged to scrape and clean the adherents on the inner wall of the solution cavity.
[0012] In a further aspect, the suspension liquid treatment tank further comprises a filter core, and the filter core is detachably installed on the solvent outlet.
[0013] Therefore, the filter core is arranged on the solvent outlet to prevent the smaller particles from flowing back to the solvent storage tank, thereby further improving the purity of the solvent.
[0014] In a further aspect, an observation hole is further arranged on the tank body.
[0015] Therefore, the observation hole arranged on the tank body can facilitate observation of the suspension liquid in the tank body.
[0016] In a further aspect, an exhaust pipe is further arranged on the tank body, the exhaust pipe is located on the top of the tank body, and the exhaust pipe is in communication with the clear liquid cavity.
[0017] Therefore, the exhaust pipe arranged on the tank body can be used to adjust the internal and external air pressure in the solution cavity to ensure the safety of the equipment.
[0018] In a further aspect, the solid-liquid separation device further comprises a diaphragm pump, a first control valve, a second control valve and a solvent discharge pipe, the liquid inlet of the diaphragm pump is in communication with the liquid outlet of the solvent storage tank; the suspension liquid treatment tank further comprises a cleaning liquid inlet, the liquid outlet of the diaphragm pump is in communication with the cleaning liquid inlet through the first control valve, and the cleaning liquid inlet is located on the top of the solution cavity; and the liquid outlet of the diaphragm pump is in communication with the solvent discharge pipe through the second control valve.
[0019] Therefore, the diaphragm pump is arranged to facilitate the extraction of the solvent in the solvent storage tank for use in the previous process, and can also be used to clean the solution cavity and the filter layer of the suspension liquid treatment tank.
[0020] In a further aspect, the solid-liquid separation device further comprises a first rotary pump, a liquid inlet of the first rotary pump being communicated with the suspension liquid inlet pipe, and a liquid outlet of the first rotary pump being communicated with the suspension liquid inlet.
[0021] Therefore, by communicating the suspension liquid inlet pipe with the suspension liquid inlet through the first rotary pump, the flow rate of the suspension liquid into the suspension liquid treatment tank can be controlled.
[0022] In a further aspect, the solid-liquid separation device further comprises a second rotary pump, a liquid inlet of the second rotary pump being communicated with the suspension liquid outlet, and a liquid outlet of the second rotary pump being communicated with the suspension liquid outlet pipe.
[0023] Therefore, by setting the second rotary pump, the suspension liquid can be conveniently pumped out for the next processing link.
[0024] In a further aspect, the suspension liquid treatment tank further comprises a liquid level detector for detecting the liquid level in the solution cavity, a thermometer for detecting the temperature in the solution cavity, and a pressure gauge for detecting the pressure in the solution cavity.
[0025] Therefore, by setting the liquid level detector, the thermometer and the pressure gauge, the liquid level, the temperature and the pressure in the solution cavity can be monitored to ensure the normal operation of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 is a structural schematic diagram of an embodiment of the solid-liquid separation device.
[0027] The present application will be further described below in conjunction with the drawings and embodiments. DETAILED DESCRIPTION
[0028] As shown in the drawings, Figure 1 In this embodiment, the solid-liquid separation device comprises a suspension liquid treatment tank 1 and a solvent storage tank 2. The suspension liquid treatment tank 1 comprises a tank body 11, a suspension liquid inlet 12, a suspension liquid outlet 13, a solvent outlet 14 and a filter layer 15. The filter layer 15 is located in a solution cavity 111 of the tank body 11 and separates the solution cavity 111 into a clear liquid cavity 112 and a turbid liquid cavity 113. The suspension liquid inlet 12 and the suspension liquid outlet 13 are both communicated with the turbid liquid cavity 113, the solvent outlet 14 is communicated with the clear liquid cavity 112, and the solvent outlet 14 is further communicated with a liquid inlet of the solvent storage tank 2.
[0029] In this embodiment, in order to prevent some fine particles from having a low settling speed, the filter layer 15 is floatingly arranged in the solution cavity 111. The filter layer 15 floats up and down with the liquid level of the suspension liquid in the tank body 11, so as to improve the settling speed of some fine particles.
[0030] The suspension processing tank 1 further comprises a driving motor 16, a spline shaft 17 and a scraping paddle 18. The driving motor 16 is installed on the top of the tank body 11. The driving motor 16 is drivingly connected with the spline shaft 17. The spline shaft 17 is inserted into the solution cavity 111 from the top of the tank body 11. The filter layer 15 is installed on the spline shaft 17 and moves along the axial direction of the spline shaft 17. The scraping paddle 18 is installed on one end of the spline shaft 17 which is located in the solution cavity 111. The scraping paddle 18 can scrape and clean the adhesion on the inner wall of the solution cavity 111. The spline shaft 17 can guide the movement of the filter layer 15.
[0031] In addition, the suspension processing tank 1 further comprises a filter core 19 which is detachably installed on the solvent outlet 14. The filter core 19 is installed on the solvent outlet 14 to prevent the smaller particles from flowing back into the solvent storage tank 2, thereby further improving the purity of the solvent.
[0032] In the embodiment, the tank body 11 is further provided with an observation hole 20 and an exhaust pipe 30. The observation hole 20 is in communication with the turbid liquid cavity 113. The observation hole 20 is provided on the tank body 11 to facilitate the observation of the suspension in the tank body 11. The observation hole 20 can be closed by a light-transmitting material, such as glass or light-transmitting plastic, to facilitate the observation while keeping the tank body 11 sealed. The exhaust pipe 30 is located on the top of the tank body 11 and is in communication with the clear liquid cavity 112. The exhaust pipe 30 is used to balance the air pressure inside and outside the solution cavity 111, so that the solvent vapor can be discharged in time.
[0033] In the embodiment, the suspension processing tank 1 further comprises a liquid level detector (not shown) for detecting the liquid level in the solution cavity 111, a thermometer 40 for detecting the temperature in the solution cavity 111 and a pressure gauge 50 for detecting the pressure in the solution cavity 111. The liquid level detector, the thermometer 40 and the pressure gauge 50 are provided to facilitate the monitoring of the liquid level, the temperature and the pressure in the solution cavity 111, thereby ensuring the normal operation of the equipment.
[0034] In the embodiment, the solid-liquid separation device further comprises a diaphragm pump 3, a first control valve 4, a second control valve 5, and a solvent discharge pipe 51. The liquid inlet of the diaphragm pump 3 is in communication with the liquid outlet of the solvent storage tank 2. The suspension treatment tank 1 further comprises a cleaning liquid inlet 114. The liquid outlet of the diaphragm pump 3 is in communication with the cleaning liquid inlet 114 through the first control valve 4, and the cleaning liquid inlet 114 is located at the top of the solution cavity 111. The liquid outlet of the diaphragm pump 3 is also in communication with the solvent discharge pipe 51 through the second control valve 5. By arranging the diaphragm pump 3, the solvent in the solvent storage tank 2 can be conveniently pumped out for use in the previous process, and can also be used for cleaning the solution cavity 111 and the filter layer 15 of the suspension treatment tank 1. When it is necessary to clean the solution cavity 111 and the filter layer 15, the first control valve 4 is opened and the second control valve 5 is closed, and the solvent in the solvent storage tank 2 is transported to the cleaning liquid inlet 114 through the diaphragm pump 3, so that the solution cavity 111 and the filter layer 15 are sprayed and flushed.
[0035] In addition, the solvent storage tank 2 is further provided with a pressure relief valve 23 and a blowdown control valve 24. The pressure relief valve 23 is arranged at the top of the solvent storage tank 2, and the blowdown control valve 24 is arranged at the bottom of the solvent storage tank 2. Both the pressure relief valve 23 and the blowdown control valve 24 are in communication with the solvent cavity of the solvent storage tank 2. The pressure relief valve 23 is used for pressure control of the solvent cavity, and the blowdown control valve 24 is used for discharging residual substances in the solvent cavity.
[0036] In the embodiment, the solid-liquid separation device further comprises a first rotor pump 6 and a second rotor pump 7. The liquid inlet of the first rotor pump 6 is in communication with the suspension feed pipe 61, and the liquid outlet of the first rotor pump 6 is in communication with the suspension liquid inlet 12. The liquid inlet of the second rotor pump 7 is in communication with the suspension liquid outlet 13 through a third control valve 71, and the liquid outlet of the second rotor pump 7 is in communication with the suspension discharge pipe 8 through a fourth control valve 72. By arranging the first rotor pump 6 to make the suspension feed pipe 61 in communication with the suspension liquid inlet 12, the flow rate of the suspension entering the suspension treatment tank 1 can be conveniently controlled. By arranging the second rotor pump 7, the suspension can be conveniently pumped out for use in the next process.
[0037] The solid-liquid separation device of the embodiment works as follows: the first rotor pump 6 transports the suspension liquid from the suspension liquid inlet pipe 61 into the solution cavity 111, the flow rate of the suspension liquid decreases after entering the solution cavity 111, the solid matters precipitate to the bottom under the action of gravity, and the solvent is in the upper layer and enters the clear liquid cavity 112 through the filter layer 15. The high solid content suspension liquid in the lower layer in the turbid liquid cavity 113 can be transported to the next centrifugal separation process by the second rotor pump 7, the solvent in the clear liquid cavity 112 flows into the solvent storage tank 2 through the solvent outlet 14 and the filter core 19, and the solvent can be recycled to the previous process or used to clean the solution cavity 111 and the filter layer 15 of the suspension liquid treatment tank 1. When cleaning, the diaphragm pump 3 can transport the solvent to the cleaning inlet 114, the driving motor 16 of the suspension liquid treatment tank 1 drives the spline shaft 17 to rotate along the axial direction of the spline shaft 17, and then drives the scraping paddle 18 to rotate. Under the action of gravity, the solvent washes off the powder of the filter layer 15, and the powder on the inner wall of the solution cavity 111 is also scraped off by the scraping paddle 18, so that the cleaning effect is achieved.
[0038] As can be seen from the above, the solid-liquid separation device of the utility model can make the low solid content suspension liquid enter the suspension liquid treatment tank 1 for standing and precipitating and filtering after entering the suspension liquid treatment tank 1, improve the solid content of the suspension liquid, reduce the floor area of the equipment, improve the solid-liquid separation effect, reduce the start-stop frequency of the subsequent centrifuge, reduce the processing capacity of the centrifuge, reduce the energy consumption, and reduce the equipment cost.
[0039] It should be noted that the above is only the preferred embodiment of the utility model, but the design concept of the utility model is not limited to this, and any non-essential modification of the utility model made by using the concept also falls within the protection scope of the utility model.
Claims
1. A solid-liquid separation device, characterized in that: The system includes a suspension treatment tank and a solvent storage tank. The suspension treatment tank includes a tank body, a suspension inlet, a suspension outlet, a solvent outlet, and a filter layer. The filter layer is located in the solution cavity of the tank body and isolates the solution cavity into a clear liquid cavity and a turbid liquid cavity. The suspension inlet and the suspension outlet are both connected to the turbid liquid cavity. The solvent outlet is connected to the clear liquid cavity. The solvent outlet is also connected to the inlet of the solvent storage tank.
2. The solid-liquid separation device according to claim 1, characterized in that: The filter layer can be floated within the solution chamber.
3. The solid-liquid separation device according to claim 1, characterized in that: The suspension treatment tank also includes a drive motor, a splined shaft, and a scraper. The drive motor is installed on the top of the tank body and is drivenly connected to the splined shaft. The splined shaft is inserted into the solution chamber from the top of the tank body, and the scraper is installed at one end of the splined shaft located in the solution chamber. The filter layer is mounted on the splined shaft and is movably positioned along the axial direction of the splined shaft.
4. The solid-liquid separation device according to claim 1, characterized in that: The suspension treatment tank also includes a filter element, which is detachably installed at the solvent outlet.
5. The solid-liquid separation device according to claim 1, characterized in that: The tank is also provided with an observation hole, which is connected to the turbid liquid chamber.
6. The solid-liquid separation apparatus according to any one of claims 1 to 5, characterized in that: The tank is also equipped with an exhaust pipe, which is located at the top of the tank and is connected to the clear liquid chamber.
7. The solid-liquid separation apparatus according to any one of claims 1 to 5, characterized in that: The solid-liquid separation device also includes a diaphragm pump, a first control valve, a second control valve, and a solvent discharge pipe, wherein the inlet of the diaphragm pump is connected to the outlet of the solvent storage tank; The suspension treatment tank also includes a cleaning inlet, and the outlet of the diaphragm pump is connected to the cleaning inlet through the first control valve. The cleaning inlet is located at the top of the solution chamber. The outlet of the diaphragm pump is also connected to the solvent discharge pipe through the second control valve.
8. The solid-liquid separation apparatus according to any one of claims 1 to 5, characterized in that: The solid-liquid separation device further includes a first rotor pump, the inlet of which is connected to the suspension feed pipe, and the outlet of which is connected to the suspension inlet.
9. The solid-liquid separation apparatus according to any one of claims 1 to 5, characterized in that: The solid-liquid separation device further includes a second rotor pump, the inlet of which is connected to the outlet of the suspension, and the outlet of which is connected to the discharge pipe of the suspension.
10. The solid-liquid separation apparatus according to any one of claims 1 to 5, characterized in that: The suspension treatment tank also includes a level detector for detecting the liquid level in the solution chamber, a thermometer for detecting the temperature in the solution chamber, and a pressure gauge for detecting the pressure in the solution chamber.