A zinc oxide production process and centrifuge equipment

Abstract

This invention belongs to the technical field of zinc oxide production equipment, specifically a zinc oxide production process and centrifugal device, including a workbench. A first cylinder is rotatably connected to the upper end of the workbench. A second cylinder is installed in the middle of the first cylinder. A fourth cylinder is fixed to the bottom of the second cylinder. The surface of the fourth cylinder has several second circular holes. By rotating the second cylinder, the fourth cylinder is driven to rotate, and centrifugal force is used to throw a third circular plate outward, causing ammonia water to be thrown outward from the second circular holes. This allows the ammonia water to quickly and fully mix with the zinc oxide solution, accelerating the separation of precipitate and liquid. By driving the third cylinder to rotate, the rectangular hole coincides with the first cylinder, allowing the separated liquid to be discharged from the first circular hole. This solves the problem that tilting the first cylinder to drain water may cause precipitate to fall out.

Description

Technical Field

[0001] This invention belongs to the technical field of zinc oxide production equipment, specifically a zinc oxide production process and centrifugal equipment. Background Technology

[0002] Zinc oxide is an important inorganic chemical raw material, widely used in rubber, plastics, coatings, ceramics, pharmaceuticals, cosmetics and other fields.

[0003] A patent with publication number CN219377519U discloses a solid-liquid separation device for zinc oxide preparation. A drive motor rotates a cross-shaped fixing rod, which in turn rotates a dehydration cylinder, causing water to flow out from holes on the surface of the cylinder. A drain pipe discharges the water from the chamber, leaving the zinc oxide material inside the cylinder. By activating a second hydraulic rod, an annular pressure plate is moved downwards, scraping off the zinc oxide adhering to the inner wall of the cylinder. The zinc oxide falls onto the top of a lower abutment plate, where it is compacted. The first hydraulic rod then moves downwards, causing the lower abutment plate to move downwards, opening the chamber door and removing the zinc oxide material. This method facilitates scraping off the adhering zinc oxide and improves the ease of operation for workers.

[0004] In the aforementioned prior art, when the dehydration tank is rotated to allow the liquid to flow out of the hole, the sediment may be thrown out of the air and cause blockage of the hole. Furthermore, it is inconvenient to disassemble the dehydration tank, making maintenance and cleaning difficult.

[0005] Therefore, the present invention provides a zinc oxide production process and centrifuge equipment. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is: a zinc oxide production process according to this invention, comprising:

[0008] Step 1: Raw Material Preparation

[0009] The main raw materials for producing zinc oxide from zinc chloride are zinc chloride and ammonia. Zinc chloride can be obtained from zinc ore through smelting, condensation, distillation and other steps, while ammonia is obtained by reacting nitrogen and hydrogen in the presence of a catalyst.

[0010] Step 2: Dissolving zinc chloride

[0011] The obtained zinc chloride solid was added to a solvent, water was chosen as the solvent. During the dissolution process, heating and stirring were required to promote the dissolution of zinc chloride. Then the zinc oxide solution was poured into the second cylinder.

[0012] Step 3: Add ammonia water

[0013] Ammonia water is placed inside the tank and flows into the fourth cylinder through the connecting pipe, and then into the second cylinder through the second hole, so that the ammonia water and zinc oxide solution can be mixed. At the same time, the mixture is stirred to ensure uniform mixing. During the process of adding ammonia water, the solution will react to form zinc oxide precipitate.

[0014] Step 4: Precipitation Separation

[0015] After zinc chloride and ammonia react to form zinc oxide precipitate, it needs to be separated. A common separation method is to use a centrifuge to separate the precipitate from the solution. The mixed solution is placed in a second cylinder, and then the second cylinder is driven to rotate. Centrifugal force is used to separate the precipitate from the solution. The separated zinc oxide precipitate can be further processed by drying or other treatments.

[0016] Step 4: Sintering of Zinc Oxide

[0017] The separated zinc oxide precipitate is then sintered. Sintering refers to the process of heating granular materials to a certain temperature so that the particles combine to form a blocky substance. During the sintering process, some auxiliary agents, such as fluxing agents and sintering aids, can be added as needed to improve the sintering performance and quality of zinc oxide.

[0018] Step 4: Refining of Zinc Oxide

[0019] The sintered zinc oxide needs to be refined to improve its purity and quality. Refining is usually carried out by recrystallization or other physicochemical methods. During the recrystallization process, a suitable solvent can be selected to dissolve the zinc oxide and then recrystallize it to remove impurities.

[0020] Step 4: Drying Zinc Oxide

[0021] After refining, zinc oxide needs to be dried to remove moisture. This is usually done by high-temperature heating or vacuum drying. The dried zinc oxide can then be packaged and stored for later use.

[0022] A zinc oxide centrifuge device is provided, which is applicable to the zinc oxide production process described above. The device includes a workbench, a first cylinder rotatably connected to the upper end of the workbench, a second cylinder installed in the middle of the first cylinder, and a fourth cylinder fixed to the bottom of the inside of the second cylinder. The surface of the fourth cylinder is provided with a plurality of second circular holes.

[0023] Preferably, the surface of the second cylinder has a plurality of first circular holes, and a third cylinder is rotatably connected to the middle of the second cylinder, the surface of the third cylinder having a plurality of rectangular holes.

[0024] Preferably, a first ring is fixedly connected to the upper end of the second cylinder, and a gear ring is fixedly connected to the upper end of the third cylinder. The gear ring is rotatably disposed outside the first ring and meshes with a gear. The upper and lower ends of the gear are rotatably connected to fixed blocks via pins. Each fixed block is fixedly connected to one side of the first ring, and a handle is fixedly connected to the upper end of the gear via a pin.

[0025] Preferably, circular grooves are provided on both sides of the second circular hole, and the third circular plate is fixed to the inside of the circular groove by a spring, and the third circular plate can slide inside the second circular hole.

[0026] Preferably, a fifth cylinder is rotatably connected to the upper end of the fourth cylinder, the fifth cylinder is fixedly connected to the box body through a connecting pipe, and the box body is fixedly connected to the workbench.

[0027] Preferably, the inner side of the third cylinder is provided with a threaded groove, a circular scraper is slidably connected to the middle of the third cylinder, rectangular grooves are opened on both sides of the fourth cylinder, a second protrusion is fixedly connected to both sides of the middle of the circular scraper, the second protrusion can slide in the rectangular groove, and a first protrusion is fixedly connected to one side of the circular scraper, the first protrusion can slide in the threaded groove.

[0028] Preferably, the lower end of the first cylinder is fixedly connected to the output end of a motor, the motor is fixedly connected to the inside of the workbench through a motor base, and a drain outlet is provided on one side of the first cylinder.

[0029] Preferably, a first circular plate is fixedly connected to the bottom of the middle part of the first cylinder, a second circular plate is fixedly connected to the middle part of the first circular plate, a cross groove is opened at the upper end of the second circular plate, and a cross block is fixedly connected to the lower end of the second cylinder.

[0030] Preferably, a No. 1 sealing ring is fixedly connected to the upper end of the first circular plate, a cover plate is installed on the upper end of the first cylinder, a second circular ring is fixedly connected to the lower end of the cover plate, and a No. 2 sealing ring is fixedly connected to the lower end of the second circular ring.

[0031] The beneficial effects of this invention are as follows:

[0032] 1. The zinc oxide production process and centrifuge equipment described in this invention, by rotating the second cylinder to drive the fourth cylinder to rotate, uses centrifugal force to throw the third circular plate outward, so that ammonia water is thrown outward from the second circular hole, so that the ammonia water and zinc oxide solution can be quickly and fully mixed, and the separation of precipitate and liquid can be accelerated.

[0033] 2. The zinc oxide production process and centrifuge equipment described in this invention, by driving the third cylinder to rotate so that the rectangular hole coincides with the first circle, allows the separated liquid to be discharged from the first circular hole, thus solving the problem that the need to tilt the first cylinder to discharge water may cause sediment to fall out.

[0034] 3. The zinc oxide production process and centrifuge equipment described in this invention solves the problem of the sediment being inconvenient to remove by driving a circular scraper to move upward along the side wall of the second cylinder. Attached Figure Description

[0035] The invention will now be further described with reference to the accompanying drawings.

[0036] Figure 1 This is a process flow diagram of the present invention;

[0037] Figure 2 This is a perspective view of Embodiment 1 of the present invention;

[0038] Figure 3 This is a schematic diagram of the cross-section of the first cylinder;

[0039] Figure 4 This is a schematic diagram of the cross-section of the second cylinder;

[0040] Figure 5 This is an exploded view of the inside of the second cylinder;

[0041] Figure 6 yes Figure 4 Enlarged view of a portion of point A in the middle;

[0042] Figure 7 This is a schematic diagram of the fourth cylindrical structure;

[0043] Figure 8 yes Figure 6 Enlarged view of a section at point B in the middle;

[0044] Figure 9 This is a cross-sectional view of the workbench;

[0045] In the diagram: 1. Workbench; 2. First cylinder; 21. First circular plate; 211. Second circular plate; 212. Cross groove; 213. No. 1 sealing ring; 22. Drain outlet; 23. Second cylinder; 231. First circular hole; 232. Cross block; 233. First circular ring; 24. Cover plate; 241. Second circular ring; 242. No. 2 sealing ring; 25. Third cylinder; 251. Gear ring; 252. Gear; 253. Fixing block; 254. Handle; 255. Rectangular hole; 256. Threaded groove; 26. Fourth cylinder; 261. Fifth cylinder; 262. Second circular hole; 263. Circular groove; 264. Spring; 265. Third circular plate; 266. Rectangular groove; 27. Circular scraper; 271. First protrusion; 272. Second protrusion; 28. Motor; 3. Connecting pipe; 31. Box body. Detailed Implementation

[0046] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0047] Example 1

[0048] The zinc oxide production process described in this embodiment of the invention includes:

[0049] Step 1: Raw Material Preparation

[0050] The main raw materials for producing zinc oxide from zinc chloride are zinc chloride and ammonia. Zinc chloride can be obtained from zinc ore through smelting, condensation, distillation and other steps, while ammonia is obtained by reacting nitrogen and hydrogen in the presence of a catalyst.

[0051] Step 2: Dissolving zinc chloride

[0052] The obtained zinc chloride solid is added to a solvent, water is selected as the solvent. During the dissolution process, heating and stirring are required to promote the dissolution of zinc chloride. Then the zinc oxide solution is poured into the second cylinder 23.

[0053] Step 3: Add ammonia water

[0054] Ammonia water is placed in the tank 31 and flows into the fourth cylinder 26 through the connecting pipe 3, and then flows into the second cylinder 23 through the second round hole 262, so that the ammonia water and zinc oxide solution are mixed. At the same time, the mixture is stirred to ensure uniform mixing. During the process of adding ammonia water, the solution will react and generate zinc oxide precipitate.

[0055] Step 4: Precipitation Separation

[0056] After zinc chloride and ammonia react to form zinc oxide precipitate, it needs to be separated. A common separation method is to use a centrifuge to separate the precipitate. The mixed solution is placed in the second cylinder 23, and then the second cylinder 23 is driven to rotate. Centrifugal force is used to separate the precipitate from the solution. The separated zinc oxide precipitate can be further processed by drying or other treatments.

[0057] Step 4: Sintering of Zinc Oxide

[0058] The separated zinc oxide precipitate is then sintered. Sintering refers to the process of heating granular materials to a certain temperature so that the particles combine to form a blocky substance. During the sintering process, some auxiliary agents, such as fluxing agents and sintering aids, can be added as needed to improve the sintering performance and quality of zinc oxide.

[0059] Step 4: Refining of Zinc Oxide

[0060] The sintered zinc oxide needs to be refined to improve its purity and quality. Refining is usually carried out by recrystallization or other physicochemical methods. During the recrystallization process, a suitable solvent can be selected to dissolve the zinc oxide and then recrystallize it to remove impurities.

[0061] Step 4: Drying Zinc Oxide

[0062] After refining, zinc oxide needs to be dried to remove moisture. This is usually done by high-temperature heating or vacuum drying. The dried zinc oxide can then be packaged and stored for later use.

[0063] Furthermore, in order to optimize the zinc oxide production process, a third cylinder 25 is added inside the second cylinder 23 in this embodiment of the invention to prevent the precipitate from being thrown out of the first hole 231 when the second cylinder 23 is rotated, which would cause the first hole 231 to become blocked and prevent the subsequently separated liquid from being discharged.

[0064] Example 2

[0065] like Figure 2-8 As shown, a zinc oxide centrifuge includes a workbench 1, a first cylinder 2 rotatably connected to the upper end of the workbench 1, a second cylinder 23 installed in the middle of the first cylinder 2, a fourth cylinder 26 fixedly connected to the bottom of the inner part of the second cylinder 23, and a plurality of second circular holes 262 opened on the surface of the fourth cylinder 26.

[0066] Specifically, in the purification of zinc oxide, it is necessary to dissolve the zinc oxide and fully mix it with ammonia water to produce a precipitate. Directly pouring ammonia water into the zinc oxide solution does not allow for a complete reaction, requiring time to form the precipitate and wasting time. Using this invention, the zinc oxide solution is first poured into the second cylinder 23, followed by the addition of ammonia water into the fourth cylinder 26, allowing the ammonia water to flow out from several second circular holes 262. The second cylinder 23 is rotated to create a sloshing motion between the ammonia water and the zinc oxide solution, enabling rapid mixing. The second cylinder 23 continues to rotate, using centrifugal force to quickly separate the precipitate from the liquid in the zinc oxide solution mixed with ammonia. The liquid is then discharged, and the precipitate is removed for sintering and purification. Ammonia is added to the fourth cylinder 26, causing it to flow out from the second hole 262 and mix with the zinc oxide solution. Rotating the second cylinder 23 causes the ammonia and zinc oxide solution to shake, accelerating the mixing of the solutions. At the same time, the centrifugal force generated by the rotation of the second cylinder 23 separates the precipitate from the liquid, accelerating the formation of precipitates in the zinc oxide solution and improving work efficiency.

[0067] like Figure 5As shown, in this embodiment, the surface of the second cylinder 23 is provided with a plurality of first circular holes 231, and the middle part of the second cylinder 23 is rotatably connected to a third cylinder 25, the surface of the third cylinder 25 being provided with a plurality of rectangular holes 255.

[0068] Specifically, after the precipitate in the zinc oxide solution separates from the liquid, the liquid needs to be drained. This is typically done manually, which is time-consuming and labor-intensive. When using this invention, as the second cylinder 23 rotates to separate the zinc oxide solution, the rectangular hole 255 and the first circular hole 231 are offset to prevent the zinc oxide solution from flowing out of the second cylinder 23. When the precipitate and liquid are completely separated, the second cylinder 23 stops rotating. When the third cylinder 25 rotates, the rectangular hole 255 coincides with the first circular hole 231, allowing the liquid to flow out from both the first circular hole 231 and the rectangular hole 255. The precipitate remains inside the second cylinder 23, thus draining the liquid completely and preventing the precipitate from flowing out.

[0069] like Figure 6 As shown, in this embodiment, a first ring 233 is fixedly connected to the upper end of the second cylinder 23, and a gear ring 251 is fixedly connected to the upper end of the third cylinder 25. The gear ring 251 is rotatably disposed outside the first ring 233. The gear ring 251 meshes with a gear 252. The upper and lower ends of the gear 252 are rotatably connected to a fixing block 253 through a pin. The fixing block 253 is fixedly connected to one side of the first ring 233. A handle 254 is fixedly connected to the upper end of the gear 252 through a pin.

[0070] Specifically, when the third cylinder 25 is driven to rotate, the rotating handle 254 drives the gear 252 to rotate, the gear 252 drives the gear ring 251 to rotate, and the gear ring 251 drives the third cylinder 25 to rotate, so that the rectangular hole 255 coincides with the first circular hole 231, thereby discharging the liquid.

[0071] like Figure 8 As shown, in this embodiment, circular grooves 263 are respectively provided on both sides of the second circular hole 262. The circular grooves 263 are fixed to the third circular plate 265 by springs 264. The third circular plate 265 can slide inside the second circular hole 262.

[0072] Specifically, when ammonia is added to the fourth cylinder 26, the second cylinder 23 is driven to rotate, which in turn drives the fourth cylinder 26 to rotate. When the fourth cylinder 26 rotates, centrifugal force is used to throw the third circular plate 265 in the second circular hole 262 outward, while stretching the spring 264, so that the ammonia is thrown outward from the second circular hole 262, allowing the ammonia to fully mix with the zinc oxide solution. When the rotation stops, the centrifugal force disappears, and the pulling force of the spring 264 pulls the third circular plate 265 back into the second circular hole 262, preventing the precipitate from entering the fourth cylinder 26.

[0073] like Figure 9As shown, in this embodiment, the upper end of the fourth cylinder 26 is rotatably connected to the fifth cylinder 261. The fifth cylinder 261 is fixedly connected to the box body 31 through the connecting pipe 3. The box body 31 is fixedly connected to the workbench 1.

[0074] Specifically, when separating the zinc oxide solution, the connecting pipe 3 is installed at the upper end of the fifth cylinder 261, so that the ammonia water in the tank 31 flows from the fifth cylinder 261 into the fourth cylinder 26 and mixes with the zinc oxide solution. After the work is completed, the water pipe can be installed at the upper end of the fifth cylinder 261 to inject water into the fourth cylinder 26. Then, the second cylinder 23 is driven to drive the fourth cylinder 26 to rotate, and the water is thrown out by centrifugal force, which can clean the inside of the second cylinder 23.

[0075] like Figure 5 As shown, in this embodiment, the inner side of the third cylinder 25 is provided with a threaded groove 256, and a circular scraper 27 is slidably connected to the middle of the third cylinder 25. The fourth cylinder 26 has rectangular grooves 266 on both sides. The circular scraper 27 has a second protrusion 272 fixed to both sides of the middle of the circular scraper 27. The second protrusion 272 can slide in the rectangular groove 266. The circular scraper 27 has a first protrusion 271 fixed to one side. The first protrusion 271 can slide in the threaded groove 256.

[0076] Specifically, after separating the zinc oxide solution and draining the liquid, the precipitate needs to be removed. Since the precipitate accumulates at the lower end of the second cylinder 23, it is inconvenient to remove. When using this invention, the third cylinder 25 is driven to rotate, causing the first protrusion 271 on one side of the circular scraper 27 to slide in the threaded groove 256, while the second protrusion 272 slides upward in the rectangular groove 266. This causes the circular scraper 27 to slide upward along the inner wall of the second cylinder 23, pushing the precipitate at the bottom upward. At the same time, the precipitate on the side wall of the second cylinder 23 can be scraped off, making it convenient to remove the precipitate for subsequent processing.

[0077] like Figure 9 As shown, in this embodiment, the lower end of the first cylinder 2 is fixedly connected to the output end of the motor 28, and the motor 28 is fixedly connected to the inside of the workbench 1 through the motor base. A drain outlet 22 is provided on one side of the first cylinder 2.

[0078] Specifically, the first cylinder 2 is driven to rotate by the drive motor 28, and the first cylinder 2 drives the second cylinder 23 to rotate, thereby separating the precipitate in the zinc oxide solution inside the second cylinder 23 from the liquid, and the liquid is discharged from the drain outlet 22.

[0079] like Figure 3 As shown, in this embodiment, a first circular plate 21 is fixedly connected to the bottom of the middle part of the first cylindrical 2, a second circular plate 211 is fixedly connected to the middle part of the first circular plate 21, a cross groove 212 is opened at the upper end of the second circular plate 211, and a cross block 232 is fixedly connected to the lower end of the second cylindrical 23.

[0080] Specifically, when the second cylinder 23 needs to be repaired, the cross block 232 at the bottom of the second cylinder 23 can be pulled out from the cross groove 212, and the second cylinder 23 and its internal parts can be repaired and cleaned. The structure is simple and easy to disassemble.

[0081] like Figure 3 As shown, in this embodiment, a first sealing ring 213 is fixedly connected to the upper end of the first circular plate 21, a cover plate 24 is installed on the upper end of the first cylinder 2, a second ring 241 is fixedly connected to the lower end of the cover plate 24, and a second sealing ring 242 is fixedly connected to the lower end of the second ring 241.

[0082] Specifically, after the second cylinder 23 is installed inside the first cylinder 2, the cover plate 24 needs to be installed on the upper end of the first cylinder 2. At the same time, the second sealing ring 242 provided at the lower end of the cover plate 24 contacts the upper end of the first cylinder 2 and presses the first cylinder 2 downward. Meanwhile, the first sealing ring 213 provided at the upper end of the first circular plate 21 is compressed, making the second cylinder 23 more firmly fixed inside the first cylinder 2, and making the rotation of the first cylinder 2 and the second cylinder 23 more stable.

[0083] Working principle: When purifying zinc oxide, the cross block 232 at the bottom of the second cylinder 23 is inserted into the cross groove 212. Then, the zinc oxide solution is poured into the second cylinder 23. Then, the cover plate 24 is installed on the upper end of the first cylinder 2. At the same time, the second sealing ring 242 at the lower end of the cover plate 24 contacts the upper end of the first cylinder 2 and presses the first cylinder 2 downward. Meanwhile, the first sealing ring 213 at the upper end of the first circular plate 21 is also compressed, making the second cylinder 23 more firmly fixed in the first cylinder 2. When the first cylinder 2 drives the second cylinder 23 to rotate, it is more stable.

[0084] Then, the connecting pipe 3 is installed on the upper end of the fifth cylinder 261, allowing the ammonia in the box 31 to flow from the fifth cylinder 261 into the fourth cylinder 26. Subsequently, the drive motor 28 drives the first cylinder 2 to rotate, which in turn drives the second cylinder 23 to rotate. The rotation of the second cylinder 23 then drives the fourth cylinder 26 to rotate. When the fourth cylinder 26 rotates, centrifugal force causes the third circular plate 265 inside the second circular hole 262 to be thrown outwards, simultaneously stretching the spring 264, causing the ammonia to be thrown outwards from the second circular hole 262, allowing the ammonia to fully mix with the zinc oxide solution. When rotation stops, the centrifugal force disappears, and the spring... The pulling force of 264 pulls the third circular plate 265 back into the second circular hole 262, preventing the zinc oxide solution from entering the fourth cylinder 26. Centrifugal force is used to quickly separate the precipitate in the zinc oxide solution mixed with ammonia from the liquid. Turning the handle 254 drives the gear 252 to rotate, the gear 252 drives the gear ring 251 to rotate, and the gear ring 251 drives the third cylinder 25 to rotate, so that the rectangular hole 255 coincides with the first circular hole 231, allowing the liquid to flow out from the first circular hole 231 and the rectangular hole 255. The precipitate remains inside the second cylinder 23, which can drain the liquid and prevent the precipitate from flowing out.

[0085] Then, the third cylinder 25 is driven to rotate, causing the first protrusion 271 on one side of the circular scraper 27 to slide in the threaded groove 256, while the second protrusion 272 slides upward in the rectangular groove 266, causing the circular scraper 27 to slide upward along the inner wall of the second cylinder 23, pushing the sediment at the bottom upward, and scraping off the sediment on the side wall of the second cylinder 23, making it easier to remove the sediment for subsequent processing.

[0086] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A zinc oxide centrifuge, characterized in that: Includes a workbench (1), the upper end of which is rotatably connected to a first cylinder (2), a second cylinder (23) is installed in the middle of the first cylinder (2), a fourth cylinder (26) is fixedly connected to the bottom of the inside of the second cylinder (23), and a plurality of second circular holes (262) are opened on the surface of the fourth cylinder (26). The second cylinder (23) has several first circular holes (231) on its surface, and a third cylinder (25) is rotatably connected to the middle of the second cylinder (23). The third cylinder (25) has several rectangular holes (255) on its surface. The upper end of the second cylinder (23) is fixedly connected to a first ring (233), and the upper end of the third cylinder (25) is fixedly connected to a gear ring (251). The gear ring (251) is rotatably disposed outside the first ring (233). The gear ring (251) meshes with a gear (252). The upper and lower ends of the gear (252) are rotatably connected to a fixing block (253) through a pin. The fixing block (253) is fixedly connected to one side of the first ring (233). The upper end of the gear (252) is fixedly connected to a handle (254) through a pin. The second circular hole (262) has circular grooves (263) on both sides. The circular grooves (263) are fixed to the third circular plate (265) by springs (264). The third circular plate (265) can slide inside the second circular hole (262). The inner side of the third cylinder (25) is provided with a threaded groove (256). A circular scraper (27) is slidably connected to the middle of the third cylinder (25). A rectangular groove (266) is opened on both sides of the fourth cylinder (26). A second protrusion (272) is fixedly connected to both sides of the middle of the circular scraper (27). The second protrusion (272) can slide in the rectangular groove (266). A first protrusion (271) is fixedly connected to one side of the circular scraper (27). The first protrusion (271) can slide in the threaded groove (256).

2. The zinc oxide centrifuge according to claim 1, characterized in that: The upper end of the fourth cylinder (26) is rotatably connected to the fifth cylinder (261), the fifth cylinder (261) is fixedly connected to the box body (31) through the connecting pipe (3), and the box body (31) is fixedly connected to the workbench (1).

3. The zinc oxide centrifuge according to claim 1, characterized in that: The lower end of the first cylinder (2) is fixedly connected to the output end of the motor (28), and the motor (28) is fixedly connected to the inside of the workbench (1) through the motor seat. A drain outlet (22) is provided on one side of the first cylinder (2).

4. A zinc oxide centrifuge according to claim 3, characterized in that: The first cylindrical tube (2) has a first circular plate (21) fixedly connected to the bottom of the middle part, and a second circular plate (211) fixedly connected to the middle part of the first circular plate (21). A cross groove (212) is opened at the upper end of the second circular plate (211), and a cross block (232) is fixedly connected to the lower end of the second cylindrical tube (23).

5. A zinc oxide centrifuge according to claim 4, characterized in that: A first sealing ring (213) is fixedly connected to the upper end of the first circular plate (21), and a cover plate (24) is installed on the upper end of the first cylinder (2). A second ring (241) is fixedly connected to the lower end of the cover plate (24), and a second sealing ring (242) is fixedly connected to the lower end of the second ring (241).

6. A zinc oxide production process, characterized in that: The zinc oxide centrifuge according to any one of claims 1-5 includes the following steps: Step 1: Raw Material Preparation Zinc chloride solid and ammonia water were selected. Step 2: Dissolving zinc chloride Solid zinc chloride was added to a solvent, water was chosen as the solvent, and during the dissolution process, it was heated and stirred to promote the dissolution of zinc chloride. Then the zinc chloride solution was poured into the second cylinder (23) of the centrifuge. Step 3: Add ammonia water Ammonia water is placed in the box (31) and flows into the fourth cylinder (26) through the connecting pipe (3), and then flows into the second cylinder (23) through the second round hole (262) to mix the ammonia water with the zinc chloride solution. At the same time, the mixture is stirred to ensure uniform mixing. During the process of adding ammonia water, the solution will react and generate zinc oxide precipitate. Step 4: Precipitation Separation After zinc chloride and ammonia react to form zinc oxide precipitate, the mixture is centrifuged and separated by a centrifuge. The mixture is placed in a second cylinder (23), and then the second cylinder (23) is driven to rotate. The centrifugal force is used to separate the precipitate from the solution. The separated zinc oxide precipitate is then dried. Step 5: Sintering and Refining The separated zinc oxide precipitate is sintered and refined to obtain the finished zinc oxide product.

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