Zirconia powder drying apparatus and drying method thereof

Abstract

The application discloses a zirconium oxide powder drying device and a drying method thereof, relates to the technical field of drying, and comprises a zirconium oxide powder drying box, a first industrial camera is fixedly installed at one end of the outside of the zirconium oxide powder drying box, a second industrial camera is fixedly installed at the other end of the outside of the zirconium oxide powder drying box, a powder discharge box is arranged at one end of the inside of the zirconium oxide powder drying box, and a discharge pipe is fixedly installed on one side of the inner wall of the powder discharge box. Iron filings generated due to equipment abrasion in the drying process can be removed through the cooperation of the two groups of electromagnetic iron removal rods and the hot air fan, and secondary drying is carried out according to the dryness of the powder discharge box, so that the hot air directly contacts the zirconium oxide powder, the zirconium oxide powder is uniformly heated, the zirconium oxide powder is dried from inside to outside, the formation of a surface hard shell is avoided, meanwhile, the zirconium oxide powder can be dispersed while being dried, the powder fluidity is improved, and the phenomenon of hard agglomeration of the powder is avoided.

Description

Technical Field

[0001] This invention relates to the field of drying technology, specifically to a zirconium oxide powder drying apparatus and drying method. Background Technology

[0002] Zirconia is widely used in cutting-edge fields such as structural ceramics, electronic ceramics, biomedical materials, and solid oxide fuel cell electrolytes due to its excellent mechanical properties, chemical stability, and unique thermal properties. With the continuous expansion of application fields, the market has put forward increasingly stringent requirements for the particle size distribution, purity, dispersibility, and sintering activity of zirconia powder. Especially in the preparation of high-end ceramics, submicron or even nanoscale ultrafine powders are usually required, and the powders are required to have narrow particle size distribution, high lattice integrity, and extremely low impurity content to ensure the densification, uniformity, and service reliability of the final ceramic products. Zirconia is a high-hardness material that has a strong abrasive effect on the inner walls of equipment, pipes, valves, and other components during processing. The resulting metal debris is a major source of pollution. In the drying and subsequent mechanical processing stages such as crushing, grinding, and conveying, the mechanical moving parts of the equipment, such as agitators and conveying screws, inevitably experience wear. These wear processes produce fine metal debris. Since ultrafine zirconia powder and metal debris are similar in particle size, conventional sieving or air classification methods are difficult to effectively separate them. When mixed into the zirconia powder, they become harmful impurities that are difficult to remove. Furthermore, zirconia powder is expensive, and powder may escape during processing and conveying, resulting in high raw material consumption and no reduction in factory costs. Therefore, some improvements are needed. Summary of the Invention

[0003] The purpose of this invention is to provide a zirconium oxide powder drying apparatus and drying method for existing devices, in order to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a zirconia powder drying device, including a zirconia powder drying box, a first industrial camera fixedly installed at one end of the exterior of the zirconia powder drying box, a second industrial camera fixedly installed at the other end of the exterior of the zirconia powder drying box, a powder discharge box provided at one end of the interior of the zirconia powder drying box, a discharge pipe fixedly installed on one side of the inner wall of the powder discharge box, the discharge pipe being connected to the zirconia powder drying box, and a powder recovery component and a separation and drying component also provided inside the zirconia powder drying box; The separation and drying assembly includes a powder separation box, a power supply box, two sets of electromagnetic iron removal rods, an iron filings vacuum cleaner, a third conveying pipe, a third cleaning nozzle, a hot air blower, a fourth conveying pipe, a fifth conveying pipe, a third electric valve, a fourth electric valve, a fifth electric valve, a first humidity detector, and a second humidity detector. The powder separation box is detachably installed on one side of the inner wall of the powder discharge box. The bottom of the powder separation box is inclined and has several sets of conveying holes. The position of the powder separation box corresponds to the position of the discharge pipe. The power supply box is located at one end of the outside of the zirconia powder drying box, on one side of the powder discharge box. One end of the two sets of electromagnetic iron removal rods is connected to the power supply box, and the other end extends through the zirconia powder drying box into the powder separation box. The hot air blower is fixedly installed outside the zirconia powder drying box, located on one side of the iron filings dust collector. One end of the fourth conveying pipe is connected to the third conveying pipe, and the other end is connected to the hot air blower.

[0005] The present invention further describes that the hot air blower is fixedly installed outside the zirconia powder drying box, located on one side of the iron filings vacuum cleaner. One end of the fourth conveying pipe is connected to the third conveying pipe, and the other end is connected to the hot air blower. The iron filings vacuum cleaner is fixedly installed on one side of the zirconia powder drying box, corresponding to the position of the powder separation box. One end of the third conveying pipe is connected to the iron filings vacuum cleaner, and the other end extends through the zirconia powder drying box to one side of the powder separation box. One end of the third cleaning nozzle is fixedly installed on the third conveying pipe, and the other end extends into the interior of the powder separation box. One end of the fifth conveying pipe is connected to the hot air blower, and the other end is connected to the recycling box; The third electric valve is fixedly installed inside the fourth conveying pipe at one end near the hot air blower, the fourth electric valve is fixedly installed inside the third conveying pipe at one end near the iron filings vacuum cleaner, and the fifth electric valve is fixedly installed inside the fifth conveying pipe. The first humidity detector is fixedly installed on one side of the inner wall of the powder discharge box, and the second humidity detector is fixedly installed on one side of the outer wall of the zirconia powder drying box.

[0006] The present invention further describes that the powder recovery assembly includes a recovery box, a first conveying pipe, a first electric valve, a second electric valve, a first cleaning nozzle, a first suction pump, a second cleaning nozzle, a second suction pump, a second conveying pipe, and a third suction pump. The recovery box is fixedly installed on one side of the exterior of the zirconia powder drying box. The first cleaning nozzle is fixedly installed on one side of the top exterior of the zirconia powder drying box, and the position of the first cleaning nozzle corresponds to the position of the first feed pipe. The second cleaning nozzle is fixedly installed on the other side of the top exterior of the zirconia powder drying box, and the position of the second cleaning nozzle corresponds to the position of the second feed pipe. One end of the first conveying pipe is connected to the recovery box, and the other end is connected to the first cleaning nozzle.

[0007] The present invention further illustrates that the first suction pump is fixedly installed on the first conveying pipe at one end near the first cleaning nozzle, and the second suction pump is fixedly installed on the first conveying pipe at one end near the second cleaning nozzle.

[0008] The present invention further illustrates that the first electric valve is fixedly installed inside the first delivery pipe at one end near the first cleaning nozzle, and the second electric valve is fixedly installed inside the first delivery pipe at one end near the second cleaning nozzle.

[0009] The present invention further illustrates that one end of the second conveying pipe is connected to the recycling bin, and the other end is connected to the first feed pipe, and the third suction pump is fixedly installed on the second conveying pipe.

[0010] The present invention further illustrates that the zirconia powder drying box is placed on the floor of the production workshop. The interior of the zirconia powder drying box is hollow. A condensate drain pipe is also provided on one side of the zirconia powder drying box. A first feed pipe is detachably installed on one side of the exterior of the zirconia powder drying box, and a second feed pipe is detachably installed on the other side of the exterior of the zirconia powder drying box.

[0011] The present invention further illustrates that the zirconia powder drying oven is also equipped with a drying control system. The drying control system includes a data detection module and a control module. The data detection module includes an image receiving submodule, a drying detection submodule, and an analysis submodule. The image receiving submodule is electrically connected to two sets of industrial cameras. The drying detection submodule is electrically connected to two sets of humidity detectors. The control module is electrically connected to the zirconia powder drying oven. The control module includes a temperature control submodule and a recycling control submodule. The temperature control submodule is electrically connected to the hot air blower, and the recycling control submodule is electrically connected to three sets of cleaning nozzles, three sets of suction pumps, five sets of electric valves, a recycling bin, a scrap dust collector, a power supply box, and two sets of electromagnetic iron removal rods.

[0012] Including the following methods: S1. When it is necessary to dry the zirconia powder, connect the first feed pipe and the second feed pipe to the workshop feeding pipeline so that the zirconia powder is transported into the zirconia powder drying box. S2. Start the drying control system to dry the zirconium oxide powder; S3. After the zirconia powder is dried, it is discharged to the powder separation box through the discharge pipe for separation and drying, and then the zirconia powder is dried again through the powder discharge box. S4. After the zirconia powder is dried, the drying control system controls the collection of iron filings.

[0013] It also includes the following specific operating steps: During the process of recovering zirconia dust, the drying control system detects the amount of powder in the recovery box through the recovery control submodule. After the powder is full, it is transported to the first feed pipe for drying. At the same time, the recovered zirconia powder is preheated and dried according to the different humidity levels in the workshop.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, through the combined use of two sets of industrial cameras, a drying control system, and two sets of cleaning nozzles, can automatically identify the dust concentration of zirconia powder in different areas during the conveying process, and change the powder recovery area and suction according to the different dust concentrations, so as to avoid zirconia powder from scattering everywhere during the conveying process and affecting the workshop production environment. By using two sets of electromagnetic iron removal rods, a hot air blower, and a drying control system, iron filings generated by equipment wear during the drying process can be removed. The zirconia powder is then subjected to a secondary drying operation based on the dryness and moisture content of the powder discharge box. This allows the hot air to directly contact the zirconia powder, heating it evenly and drying it from the inside out, thus preventing the formation of a hard shell on the surface. At the same time, the zirconia powder can be dispersed while drying, improving its flowability and preventing hard agglomeration. By using the recycling bin, the third suction pump, the second humidity detector, and the drying control system in combination, the powder can be transported to the first feed pipe for drying after it is fully collected. At the same time, the recycled zirconia powder can be preheated and dried according to the different humidity levels in the workshop, which reduces the consumption of raw materials in the production process, lowers the factory's cost expenditure, and achieves the effect of energy conservation and emission reduction. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is a schematic diagram showing the location of the recycling bin in this invention; Figure 4 This is a schematic diagram of the separation and drying component structure of the present invention; Figure 5 This is a schematic diagram of the powder recovery component structure of the present invention; Figure 6 This is a partial cross-sectional schematic diagram of the powder discharge box of the present invention; Figure 7 This is a schematic diagram of the pipeline structure of the present invention; Figure 8 This is a schematic diagram of the control system of the present invention.

[0016] In the diagram: 1. Zirconia powder drying oven; 11. First industrial camera; 12. Second industrial camera; 13. First feed pipe; 14. Second feed pipe; 15. Powder discharge box; 16. Discharge pipe; 17. Condensate discharge pipe; 2. Powder recovery assembly; 21. Recovery box; 22. First conveying pipe; 221. First electric valve; 222. Second electric valve; 23. First cleaning nozzle; 231. First suction pump; 24. Second cleaning nozzle; 241. Second suction pump; 25. Second conveying pipe; 26. Third suction pump; 3. Separation and drying components; 31. Powder separation box; 32. Power supply box; 321. Electromagnetic iron removal rod; 33. Iron filings vacuum cleaner; 331. Third conveying pipe; 34. Third cleaning nozzle; 35. Hot air blower; 351. Fourth conveying pipe; 352. Fifth conveying pipe; 36. Third electric valve; 361. Fourth electric valve; 362. Fifth electric valve; 37. First humidity detector; 371. Second humidity detector. Detailed Implementation

[0017] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-8This invention provides a technical solution: a zirconia powder drying device and its drying method, comprising a zirconia powder drying box 1, which is placed on the floor of a production workshop. The interior of the zirconia powder drying box 1 is hollow. A first industrial camera 11 is fixedly installed at one end of the exterior of the zirconia powder drying box 1, and a second industrial camera 12 is fixedly installed at the other end of the exterior of the zirconia powder drying box 1. The two sets of industrial cameras are used to identify the dust state and powder accumulation of the zirconia powder. Dust covers can be detachably installed on the exterior of both sets of industrial cameras to effectively prevent zirconia powder from adhering. A first feed pipe 13 is detachably installed on one side of the exterior of the zirconia powder drying box 1, and a second feed pipe 12 is detachably installed on the other side of the exterior of the zirconia powder drying box 1. Feed pipe 14, two sets of feed pipes are used to cooperate in conveying zirconia powder for drying operation. A powder discharge box 15 is set at one end of the interior of the zirconia powder drying box 1 for separating and drying the zirconia powder. A discharge pipe 16 is fixedly installed on one side of the inner wall of the powder discharge box 15. The discharge pipe 16 is connected to the zirconia powder drying box 1 for outputting the dried zirconia powder. A discharge pipe is set at the bottom of the powder discharge box 15 and connected to a workshop collection device (not shown in the figure) for outputting the dried zirconia powder and the discharge of hot air. A condensate discharge pipe 17 is also set on one side of the zirconia powder drying box 1 for discharging the condensate generated during drying. The interior of the zirconia powder drying box 1 is also equipped with a powder recovery component 2 and a separation drying component 3. The powder recovery assembly 2 includes a recovery box 21, a first conveying pipe 22, a first electric valve 221, a second electric valve 222, a first cleaning nozzle 23, a first suction pump 231, a second cleaning nozzle 24, a second suction pump 241, a second conveying pipe 25, and a third suction pump 26. The recovery box 21 is fixedly installed on one side of the exterior of the zirconia powder drying box 1 to help recover dust generated during the material conveying process. The recovery box 21 has a built-in powder detector (not shown in the figure). The first cleaning nozzle 23 is fixedly installed on one side of the top exterior of the zirconia powder drying box 1, and the position of the first cleaning nozzle 23 corresponds to the position of the first feed pipe 13. The second cleaning nozzle 24 is fixedly installed on the other side of the top exterior of the zirconia powder drying box 1, and the position of the second cleaning nozzle 24 corresponds to the position of the second feed pipe 14. The two sets of cleaning nozzles are used to cooperate in the recovery operation of zirconia powder in different areas. One end of the first conveying pipe 22 is connected to the recovery box 21, and the other end is connected to the first cleaning nozzle 23. The first suction pump 231 is fixedly installed on the first conveying pipe 22 near the end of the first cleaning nozzle 23, and the second suction pump 241 is fixedly installed on the first conveying pipe 22 near the end of the second cleaning nozzle 24. The two sets of suction pumps are used to cooperate in the powder recovery operation. The first electric valve 221 is fixedly installed inside the first conveying pipe 22 near the end of the first cleaning nozzle 23, and the second electric valve 222 is fixedly installed inside the first conveying pipe 22 near the end of the second cleaning nozzle 24. They are used to cooperate in controlling the powder flow. One end of the second conveying pipe 25 is connected to the recycling box 21, and the other end is connected to the first feed pipe 13. It is used to collect the recycled dust powder and reuse it. The third suction pump 26 is fixedly installed on the second conveying pipe 25 to cooperate in conveying zirconium oxide powder. The separation and drying assembly 3 includes a powder separation box 31, a power supply box 32, two sets of electromagnetic iron removal rods 321, an iron filings dust collector 33, a third conveying pipe 331, a third cleaning nozzle 34, a hot air blower 35, a fourth conveying pipe 351, a fifth conveying pipe 352, a third electric valve 36, a fourth electric valve 361, a fifth electric valve 362, a first humidity detector 37, and a second humidity detector 371. The powder separation box 31 is detachably installed on one side of the inner wall of the powder discharge box 15, and the bottom of the powder separation box 31 is inclined. The powder separation box 31 is inclined and has several sets of conveying holes. The position of the powder separation box 31 corresponds to the position of the discharge pipe 16. It is used to cooperate in the secondary separation and drying operation of zirconia powder. The power supply box 32 is located at one end of the outside of the zirconia powder drying box 1, on one side of the powder discharge box 15. One end of the two sets of electromagnetic iron removal rods 321 is connected to the power supply box 32, and the other end extends through the zirconia powder drying box 1 into the powder separation box 31. It is used to cooperate in separating the iron filings generated by the wear of the equipment during the drying process. The iron filings vacuum cleaner 33 is fixedly installed on the outside of the zirconia powder drying box 1, corresponding to the position of the powder separation box 31. One end of the third conveying pipe 331 is connected to the iron filings vacuum cleaner 33, and the other end extends through the zirconia powder drying box 1 to one side of the powder separation box 31. One end of the third cleaning nozzle 34 is fixedly installed on the third conveying pipe 331, and the other end extends to the bottom of the powder separation box 31, for use in collecting the iron filings generated during separation. The hot air blower 35 is fixedly installed outside the zirconia powder drying box 1, located on one side of the iron filings dust collector 33. One end of the fourth conveying pipe 351 is connected to the third conveying pipe 331, and the other end is connected to the hot air blower 35. One end of the fifth conveying pipe 352 is connected to the hot air blower 35, and the other end is connected to the recovery box 21, which is used to divert hot air for drying the recovered powder; The third electric valve 36 is fixedly installed inside the fourth delivery pipe 351 at one end near the hot air blower 35, and is used to control the gas flow. The fourth electric valve 361 is fixedly installed inside the third conveying pipe 331 near one end of the iron filings vacuum cleaner 33, and is used to control the flow of powder. The fifth electric valve 362 is fixedly installed inside the fifth delivery pipe 352 to control the gas flow. The first humidity detector 37 is fixedly installed on one side of the inner wall of the powder discharge box 15 to detect the dryness of the powder during the separation process. The second humidity detector 371 is fixedly installed on one side of the outer wall of the zirconia powder drying box 1 to detect the dryness of the recovered powder. The zirconia powder drying oven 1 is also equipped with a drying control system. The drying control system includes a data detection module and a control module. The data detection module includes an image receiving submodule, a drying detection submodule, and an analysis submodule. The image receiving submodule is electrically connected to two sets of industrial cameras, the drying detection submodule is electrically connected to two sets of humidity detectors, and the control module is electrically connected to the zirconia powder drying oven 1. The control module includes a temperature control submodule and a recycling control submodule. The temperature control submodule is electrically connected to the hot air blower 35, and the recycling control submodule is electrically connected to three sets of cleaning nozzles, three sets of suction pumps, five sets of electric valves, recycling bin 21, iron filings vacuum cleaner 33, power supply box 32, two sets of electromagnetic iron removal rods 321, and the powder detector built into the recycling bin 21.

[0019] The drying control system includes the following operating steps: S1. When it is necessary to dry the zirconia powder, connect the first feed pipe 13 and the second feed pipe 14 to the workshop feeding pipeline so that the zirconia powder is transported into the zirconia powder drying box 1.

[0020] S2. Start the drying control system to dry the zirconium oxide powder; Specifically, the drying control system controls the zirconia powder drying chamber 1 to dry the zirconia powder. During the drying process, the zirconia powder easily drifts into the workshop from the first feed pipe 13 and the second feed pipe 14. At this time, the drying control system uses the image receiving submodule to control two sets of industrial cameras to identify the dust concentration of the drifting zirconia powder at the two feed pipes and compare it with the set value. The system adjusts the recovery suction according to the different dust concentrations. The image receiving submodule sets the dust concentration value range to A1, and the recovery control submodule sets the suction value range to B1~B2. For example, when the two sets of industrial cameras detect that the dust concentration value at the first feed pipe 13 reaches A1, the drying control system determines that the dust concentration at the first feed pipe 13 is low. The drying control system then controls only the first electric valve through the recovery control submodule. When 221 is turned on, the first suction pump 231 starts, with a suction value range of B1. The first suction pump 231 sucks the zirconia powder dust scattered in the area near the first feed pipe 13 into the first conveying pipe 22 through the first cleaning nozzle 23, and then conveys it to the recycling box 21 for centralized collection. When the two sets of industrial cameras detect that the dust concentration value at the second feed pipe 14 reaches A1, the drying control system determines that the dust concentration at the second feed pipe 14 is low. The drying control system controls only the second electric valve 222 to open through the recycling control submodule, and the second suction pump 241 starts, with a suction value range of B1. The second suction pump 241 sucks the zirconia powder dust scattered in the area near the second feed pipe 14 into the first conveying pipe 22 through the second cleaning nozzle 24, and then conveys it to the recycling box 21 for centralized collection.

[0021] When the two sets of industrial cameras detect that the dust concentration at either feed pipe is greater than A1, the drying control system determines that the dust concentration is high. The drying control system controls the first electric valve 221 and the second electric valve 222 to open through the recycling control submodule. The two sets of suction pumps start and the suction value range is adjusted to B2. The two sets of cleaning nozzles suck the zirconium oxide powder dust scattered in the nearby area into the first conveying pipe 22 and then transport it to the recycling box 21 for centralized collection.

[0022] By using two sets of industrial cameras, a drying control system, and two sets of cleaning nozzles in combination, the dust concentration of zirconia powder in different areas during the conveying process can be automatically identified, and the powder recovery area and suction force can be adjusted according to the different dust concentrations to prevent zirconia powder from scattering everywhere during the conveying process and affecting the workshop production environment.

[0023] S3. After the zirconia powder is dried, it is output to the powder separation box 31 through the discharge pipe 16 for separation and drying, and the zirconia powder is then dried a second time through the powder discharge box 15. Specifically, after the above steps are completed, the zirconia powder is conveyed to the zirconia powder drying chamber 1 for stirring and drying. After drying, the zirconia powder is output from the discharge pipe 16 to the powder separation chamber 31 for separation and drying. The zirconia powder first accumulates inside the powder separation chamber 31. At this time, the drying control system controls the power supply box 32 to start through the recovery control submodule, and the two sets of electromagnetic iron removal rods 321 are activated. The two sets of electromagnetic iron removal rods 321 come into contact with the zirconia powder and remove the iron filings generated by the wear of the equipment during the drying process. After the iron removal operation, the zirconia powder accumulates in the powder separation chamber 31. When a certain amount has accumulated, the zirconia powder slowly flows out from several sets of conveying holes on the powder separation chamber 31 into the powder discharge chamber 15. Then, the drying control system detects the humidity value of the first humidity detector 37 through the drying detection submodule and compares it with the set value. If the drying detection submodule detects that the humidity value of the first humidity detector 37 is lower than the set value, the drying control system determines that the humidity value in the powder discharge chamber 15 is low. No secondary drying operation is required. If the drying detection submodule detects that the humidity value of the first humidity detector 37 is equal to the set value, the drying control program determines that there is moisture in the powder discharge box 15. The drying control system controls the third electric valve 36 to open, while the fourth electric valve 361 and the fifth electric valve 362 remain closed. The hot air blower 35 starts, and the drying control system controls the hot air blower 35 to slowly blow hot air into the third conveying pipe 331 through the fourth conveying pipe 351 to prevent the zirconia powder from scattering. Finally, the hot air is sprayed out from the third cleaning nozzle 34 into the powder discharge box 15, allowing the hot air to directly contact the zirconia powder and heat it evenly, drying it from the inside out and avoiding the formation of a hard shell on the surface. At the same time, it can disperse the zirconia powder while drying, improving the powder's fluidity and preventing the powder from hard agglomerating. If the drying detection submodule detects that the humidity value of the first humidity detector 37 is higher than the set value, the drying control system controls the hot air blower 35 to increase the heating temperature and accelerate the drying speed to prevent the zirconia powder from becoming damp and clumping.

[0024] By using two sets of electromagnetic iron removal rods 321, hot air blower 35 and drying control system together, iron filings generated by equipment wear during the drying process can be removed. The zirconia powder is then dried a second time according to the dryness and wetness of the powder discharge box 15. Hot air directly contacts the zirconia powder and heats it evenly, allowing it to dry from the inside out, avoiding the formation of a hard shell on the surface. At the same time, the zirconia powder can be dispersed while drying, improving powder flowability and preventing the formation of hard agglomerates.

[0025] S4. After the zirconia powder is dried, the drying control system controls the iron filings collection operation. Specifically, after the zirconia powder drying operation is completed, the drying control system controls the fourth electric valve 361 to open through the recovery control submodule, while the third electric valve 36, the fifth electric valve 362, and the hot air blower 35 are all closed. The iron filings vacuum cleaner 33 is turned on, while the power supply box 32 and the two sets of electromagnetic iron removal rods 321 are turned off. The iron filings vacuum cleaner 33 sucks the iron filings separated from the two sets of electromagnetic iron removal rods 321 into the third conveying pipe 331 through the third cleaning nozzle 34, and finally sucks them into the iron filings vacuum cleaner 33 for centralized collection.

[0026] By using the iron filings vacuum cleaner 33, the third conveying pipe 331 and the drying control system together, the iron filings generated by the wear of the equipment can be collected in a centralized manner after drying, eliminating the need for manual cleaning by staff and reducing their workload.

[0027] S2 includes the following specific operating steps: During the process of recovering zirconia dust, the drying control system controls the built-in powder detector of the recovery box 21 through the recovery control submodule to detect the amount of powder in the recovery box 21. After the powder is full, it is transported to the first feed pipe 13 for drying. At the same time, the recovered zirconia powder is preheated and dried according to the different humidity levels in the workshop. Specifically, the drying control system sets a high threshold V for the built-in powder detector in the recovery box 21. max With low threshold V min When the amount of recycled powder reaches V max When the drying control system determines that the recovery box 21 is full, it automatically triggers the secondary conveying program. The recovery control submodule controls the third suction pump 26 to start, and the recovered powder is uniformly conveyed to the first feed pipe 13 through the second conveying pipe 25, so that the recovered powder re-enters the zirconia powder drying box 1 for the main drying process, realizing the closed-loop utilization of raw materials. When the amount of recovered powder drops to V... min At this time, the drying control system controls the third suction pump 26 to stop running and resets the built-in powder detector of the recovery box 21, waiting for the next full recovery trigger.

[0028] Specifically, after the powder in the recycling bin 21 is full, the drying control system controls the third suction pump 26 to start through the recycling control submodule. The third suction pump 26 sucks the powder in the recycling bin 21 into the second conveying pipe 25, and then into the first feed pipe 13. The collected zirconia dust powder is recycled and sent back into the zirconia powder drying box 1 for stirring and drying. During the above operation, the drying control system detects the value of the second humidity detector 371 through the drying detection submodule and performs graded judgment and differentiated preprocessing of the recycled powder state according to the preset humidity value. The drying control system sets the humidity values ​​to H1 and H2; H1 is the minimum value and H2 is the maximum value, which can be adjusted according to specific needs. If the value of the second humidity detector 371 detected by the drying detection submodule is ≤ H1, the drying control system determines that the recycled powder is in a dry state and can directly participate in the main drying process. At this time, the drying control system controls the fifth electric valve 362 to remain closed through the recycling control submodule, and the hot air blower 35 does not provide hot air to the recycling bin 21 to reduce energy consumption.

[0029] If the detection value of the second humidity detector 371 is between H1 and H2, the drying control system determines that the recovered powder contains trace amounts of moisture and starts the micro-moisture preheating program. The drying control system controls the fifth electric valve 362 to open 1 / 3 through the recovery control submodule, and the temperature control submodule controls the hot air blower 35 to output low-temperature preheating air. The hot air is diverted to the recovery box 21 through the fifth conveying pipe 352 to preheat and dry the recovered powder, so as to avoid the damp powder from directly entering the main drying box and causing agglomeration or increasing the main drying load.

[0030] If the detection value of the second humidity detector 371 is greater than H2, the drying control system determines that the humidity of the workshop environment is too high, causing the recycled powder to absorb moisture severely. It then starts the high humidity enhanced drying program. The recycling control submodule controls the fifth electric valve 362 to be fully opened, the temperature control submodule controls the hot air blower 35 to increase the temperature of the drying hot air, and controls the third suction pump 26 to start and stop intermittently through the recycling control submodule. This causes the recycled powder to linger and tumble briefly in the recycling box 21, prolonging the hot air contact time and ensuring that the recycled powder reaches the preset dryness requirement before entering the main drying process.

[0031] If the value detected by the drying detection submodule of the second humidity detector 371 is higher than the set value, the drying control system determines that the humidity in the workshop is high and the recovered zirconia dust powder contains moisture, so it needs to be preheated and dried. The drying control system controls the fifth electric valve 362 to open through the recovery control submodule, and the hot air blower 35 diverts the hot air to the fifth conveying pipe 352, and then blows it into the recovery box 21 to preheat and dry the zirconia dust powder collected in the recovery box 21.

[0032] By using the recycling bin 21, the third suction pump 26, the second humidity detector 371, and the drying control system in conjunction with the powder collection bin 21, the powder can be transported to the first feed pipe 13 for drying after it is full. At the same time, the recycled zirconium oxide powder can be preheated and dried according to the different humidity levels in the workshop, thereby reducing the consumption of raw materials in the production process, reducing the cost of the factory, and achieving the effect of energy saving and emission reduction.

[0033] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A zirconia powder drying apparatus, comprising a zirconia powder drying chamber (1), characterized in that, A first industrial camera (11) is fixedly installed at one end of the exterior of the zirconia powder drying box (1), and a second industrial camera (12) is fixedly installed at the other end of the exterior of the zirconia powder drying box (1). A powder discharge box (15) is provided at one end of the interior of the zirconia powder drying box (1). A discharge pipe (16) is fixedly installed on one side of the inner wall of the powder discharge box (15). The discharge pipe (16) is connected to the zirconia powder drying box (1). A powder recovery component (2) and a separation drying component (3) are also provided inside the zirconia powder drying box (1). The separation and drying assembly (3) includes a powder separation box (31), a power supply box (32), two sets of electromagnetic iron removal rods (321), an iron filings dust collector (33), a third conveying pipe (331), a third cleaning nozzle (34), a hot air blower (35), a fourth conveying pipe (351), a fifth conveying pipe (352), a third electric valve (36), a fourth electric valve (361), a fifth electric valve (362), a first humidity detector (37), and a second humidity detector (371). The powder separation box (31) is detachably installed at the powder discharge point. On one side of the inner wall of the box (15), the bottom of the powder separation box (31) is inclined and the powder separation box (31) is provided with several sets of material conveying holes. The position of the powder separation box (31) corresponds to the position of the discharge pipe (16). The power supply box (32) is located at one end of the outside of the zirconia powder drying box (1) and on one side of the powder discharge box (15). One end of the two sets of electromagnetic iron removal rods (321) is connected to the power supply box (32), and the other end extends through the zirconia powder drying box (1) to the inside of the powder separation box (31).

2. The zirconium oxide powder drying apparatus according to claim 1, characterized in that, The hot air blower (35) is fixedly installed outside the zirconium oxide powder drying box (1) and located on one side of the iron filings dust collector (33). One end of the fourth conveying pipe (351) is connected to the third conveying pipe (331), and the other end is connected to the hot air blower (35). The iron filings vacuum cleaner (33) is fixedly installed on the outside of the zirconia powder drying box (1) and corresponds to the position of the powder separation box (31). One end of the third conveying pipe (331) is connected to the iron filings vacuum cleaner (33), and the other end extends through the zirconia powder drying box (1) to one side of the powder separation box (31). One end of the third cleaning nozzle (34) is fixedly installed on the third conveying pipe (331), and the other end extends into the inside of the powder separation box (31). One end of the fifth conveying pipe (352) is connected to the hot air blower (35), and the other end is connected to the recycling box (21); The third electric valve (36) is fixedly installed inside the fourth conveying pipe (351) at one end near the hot air blower (35), the fourth electric valve (361) is fixedly installed inside the third conveying pipe (331) at one end near the iron filings vacuum cleaner (33), and the fifth electric valve (362) is fixedly installed inside the fifth conveying pipe (352). The first humidity detector (37) is fixedly installed on one side of the inner wall of the powder discharge box (15), and the second humidity detector (371) is fixedly installed on one side of the outer wall of the zirconia powder drying box (1).

3. The zirconium oxide powder drying apparatus according to claim 2, characterized in that, The powder recovery assembly (2) includes a recovery box (21), a first conveying pipe (22), a first electric valve (221), a second electric valve (222), a first cleaning nozzle (23), a first suction pump (231), a second cleaning nozzle (24), a second suction pump (241), a second conveying pipe (25), and a third suction pump (26). The recovery box (21) is fixedly installed at one end of the exterior of the zirconia powder drying box (1). The first cleaning nozzle (23) is fixedly installed on one side of the top exterior of the zirconia powder drying box (1). The position of the first cleaning nozzle (23) corresponds to the position of the first feed pipe (13). The second cleaning nozzle (24) is fixedly installed on the other side of the top exterior of the zirconia powder drying box (1). The position of the second cleaning nozzle (24) corresponds to the position of the second feed pipe (14). One end of the first conveying pipe (22) is connected to the recovery box (21), and the other end is connected to the first cleaning nozzle (23).

4. The zirconium oxide powder drying apparatus according to claim 3, characterized in that, The first suction pump (231) is fixedly installed on the first conveying pipe (22) at one end near the first cleaning nozzle (23), and the second suction pump (241) is fixedly installed on the first conveying pipe (22) at one end near the second cleaning nozzle (24).

5. The zirconium oxide powder drying apparatus according to claim 4, characterized in that, The first electric valve (221) is fixedly installed inside the first delivery pipe (22) at one end near the first cleaning nozzle (23), and the second electric valve (222) is fixedly installed inside the first delivery pipe (22) at one end near the second cleaning nozzle (24).

6. The zirconium oxide powder drying apparatus according to claim 5, characterized in that, One end of the second conveying pipe (25) is connected to the recycling box (21), and the other end is connected to the first feed pipe (13). The third suction pump (26) is fixedly installed on the second conveying pipe (25).

7. A zirconium oxide powder drying apparatus according to claim 6, characterized in that, The zirconia powder drying box (1) is placed on the floor of the production workshop. The interior of the zirconia powder drying box (1) is hollow. A condensate drain pipe (17) is also provided on one side of the zirconia powder drying box (1). A first feed pipe (13) is detachably installed on one side of the exterior of the zirconia powder drying box (1). A second feed pipe (14) is detachably installed on the other side of the exterior of the zirconia powder drying box (1).

8. A zirconium oxide powder drying apparatus according to claim 7, characterized in that, The zirconia powder drying oven (1) is also equipped with a drying control system. The drying control system includes a data detection module and a control module. The data detection module includes an image receiving submodule, a drying detection submodule, and an analysis submodule. The image receiving submodule is electrically connected to two sets of industrial cameras. The drying detection submodule is electrically connected to two sets of humidity detectors. The control module is electrically connected to the zirconia powder drying oven (1). The control module includes a temperature control submodule and a recycling control submodule. The temperature control submodule is electrically connected to the hot air blower (35). The recycling control submodule is electrically connected to three sets of cleaning nozzles, three sets of suction pumps, five sets of electric valves, recycling box (21), iron filings vacuum cleaner (33), power supply box (32), and two sets of electromagnetic iron removal rods (321).

9. The drying method of the zirconium oxide powder drying apparatus according to claim 8, characterized in that, Including the following methods: S1. When it is necessary to dry the zirconia powder, connect the first feed pipe (13) and the second feed pipe (14) to the workshop feed pipeline so that the zirconia powder is transported to the inside of the zirconia powder drying box (1). S2. Start the drying control system to dry the zirconium oxide powder; S3. After the zirconia powder is dried, it is discharged through the discharge pipe (16) to the powder separation box (31) for separation and drying, and the zirconia powder is dried again through the powder discharge box (15). S4. After the zirconia powder is dried, the drying control system controls the collection of iron filings.

10. The drying method of the zirconium oxide powder drying apparatus according to claim 9, characterized in that, S2 also includes the following specific operational steps: During the process of recovering zirconium oxide dust powder, the drying control system detects the amount of powder in the recovery box (21) through the recovery control submodule. After the powder is full, it is transported to the first feed pipe (13) for drying. At the same time, the recovered zirconium oxide powder is preheated and dried according to the different humidity levels in the workshop.

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