A stirring device for preparing zirconium oxide powder

Abstract

The utility model belongs to zirconium oxide preparation technical field, concretely relates to a kind of stirring device for zirconium oxide powder preparation, including cauldron body, mixing box, servo motor, stirring shaft and pivot, storage tank is equipped in cauldron body, the upper portion of cauldron body is equipped with gear sleeve, two vertical bevel gears and horizontal bevel gear are equipped in gear sleeve;The bottom of mixing box is connected with material guiding pipe, filter is equipped on material guiding pipe, one end of material guiding pipe is inserted into the feeding port of storage tank;The output shaft of servo motor is fixedly connected with second vertical bevel gear;The top of stirring shaft is fixedly connected with horizontal bevel gear, the centre of storage tank is penetrated by the middle part of stirring shaft, and stirring rod is equipped in the lower end of stirring shaft;The left end of pivot is rotatably connected in mixing box, and spiral stirring vane is equipped, and the right end of pivot is fixedly connected with first vertical bevel gear.The device has filtering function, can filter the impurities in precipitant, can also add precipitant evenly into second mixed solution, improve precipitation effect.

Description

Technical Field

[0001] This utility model belongs to the field of zirconium oxide preparation technology, and specifically relates to a stirring device for preparing zirconium oxide powder. Background Technology

[0002] Zirconium dioxide, with the chemical formula ZrO2, is the main oxide of zirconium. Under normal conditions, it is a white, odorless, and tasteless crystal, sparingly soluble in water, hydrochloric acid, and dilute sulfuric acid. Its chemically inert nature, coupled with its high melting point, high resistivity, high refractive index, and low coefficient of thermal expansion, makes it an important high-temperature resistant material, ceramic insulating material, and ceramic opacifier. It is also a primary raw material for artificial drills.

[0003] Currently, the preparation process of zirconium oxide mainly uses zircon and zircon as raw materials. For example, the published invention patent, application number CN201711213792.0, discloses a zirconium oxide production process that uses zircon as raw material. In the fourth step, a precipitant (i.e., a mixture of oxalic acid, ammonium bicarbonate, ammonia, and sodium hydroxide) is added to the second mixture obtained in the previous step and stirred to obtain zirconium hydroxide through precipitation. However, the existing stirring device is single-function and lacks filtration capabilities, failing to filter out impurities in oxalic acid, ammonium bicarbonate, ammonia, and sodium hydroxide, affecting subsequent reactions. In addition, the precipitant should be added evenly and slowly to the second mixture to promote the reaction between the precipitant and the reactants. However, the current method involves directly adding it to the stirring device through a pipe, which may cause uneven distribution of the precipitant, affecting the precipitation effect and hindering the reaction.

[0004] Therefore, there is an urgent need for a stirring device for the preparation of zirconium oxide powder to solve the above problems. Utility Model Content

[0005] To address the aforementioned deficiencies in the existing technology, this utility model provides a stirring device for the preparation of zirconia powder, comprising a vessel body, a mixing tank, a servo motor, a stirring shaft, and a rotating shaft. The vessel body has a feed inlet on its side and a discharge outlet at its bottom. A storage tank is located inside the vessel body, with a feeding port at the center of the top and multiple discharge ports at the bottom. A gear sleeve is located in the middle of the upper part of the vessel body, and a first vertical bevel gear, a second vertical bevel gear, and a horizontal bevel gear are arranged inside the gear sleeve. The first and second vertical bevel gears are respectively meshed and connected to the left and right sides of the horizontal bevel gear.

[0006] The mixing chamber is located on the left side above the vessel body. The top of the mixing chamber is equipped with a feeding port, and the bottom of the mixing chamber is equipped with a ramp. The bottom of the mixing chamber is connected to a guide pipe, and the connection between the guide pipe and the mixing chamber is located at the lower end of the ramp. A filter is installed on the guide pipe. One end of the guide pipe passes through the side wall of the vessel body and extends into the feeding port of the storage tank. A nozzle is installed on one end of the guide pipe.

[0007] The servo motor is located on the right side above the vessel body, and a motor base is fixed to the bottom of the servo motor. The output shaft of the servo motor passes through the gear sleeve and is fixedly connected to the second vertical bevel gear.

[0008] The stirring shaft is vertically installed in the vessel body. The top of the stirring shaft passes through the top wall of the vessel body and enters the gear sleeve, where it is fixedly connected to the horizontal bevel gear. The stirring shaft and the top wall of the vessel body are sealed and rotatably connected. The middle part of the stirring shaft passes through the center of the storage tank, and the stirring shaft and the storage tank are sealed and fixedly connected. Several stirring rods are installed at the lower end of the stirring shaft, and each stirring rod is equipped with multiple stirring blades.

[0009] The left end of the rotating shaft is rotatably connected to the mixing box, and a spiral stirring blade is provided on the left end of the rotating shaft. The right end of the rotating shaft passes through a gear sleeve and is fixedly connected to the first vertical bevel gear.

[0010] Optionally, a discharge valve is provided at the outlet of the vessel.

[0011] Optionally, the vessel shell is provided with an inspection port and an observation window.

[0012] Specifically, the inspection port facilitates the maintenance of the vessel's interior by staff, while the observation window allows on-site personnel to monitor the vessel's internal operation.

[0013] Optionally, the top edge of the feeding port of the storage tank is provided with an annular baffle, and an annular guide plate is fixed inside the storage tank. The annular guide plate is located below the feeding port, and the nozzle of the guide pipe is located between the annular baffle and the annular guide plate. In this way, while the annular guide plate provides guidance for the precipitant, the annular baffle can also be used to reduce the precipitant from spraying out from the top. The annular guide plate is an inverted cone with a diameter at the upper end larger than that at the lower end.

[0014] Optionally, a manual ball valve and a feed pump are also installed on the feed pipe.

[0015] Optionally, the filter includes a housing with a removable top cover, a filter inlet at the left end and a filter outlet at the right end, and a number of receiving cavities inside the housing. Each receiving cavity has perforated plates on both the left and right sides, and each receiving cavity is filled with a filter screen. The number of receiving cavities separates the filter screens from each other and positions the filter screens.

[0016] Specifically, the filter can not only remove impurities from the precipitant, but also slow down the flow rate of the precipitant in the feed pipe to a certain extent. In addition, the filter screen is easy to replace. If it is partially damaged, it can be replaced locally, and the rest can continue to be used, saving material costs.

[0017] Optionally, the stirring rods located on the left and right sides of the stirring shaft are arranged alternately, and the stirring blades located on the upper and lower sides of the stirring rods are arranged alternately.

[0018] Specifically, this design can improve the mixing capacity of the stirring rod and stirring blades, thereby increasing mixing efficiency.

[0019] This invention also includes other components that enable the stirring device for the preparation of zirconia powder to function properly, all of which are conventional techniques in the art. Furthermore, any devices or components not specified in this invention employ conventional techniques in the art, such as servo motors and feed pumps.

[0020] The working principle of this invention is as follows: A second mixture is added to the reactor body, making the liquid level lower than that of the storage tank and the bottom discharge port. Simultaneously, oxalic acid, ammonium bicarbonate, ammonia, and sodium hydroxide are added to the mixing tank. A servo motor is started, driving the stirring shaft and rotating shaft to rotate. The stirring shaft drives the stirring rod and stirring blades to rotate, stirring the second mixture in the reactor body. The rotating shaft drives the spiral stirring blades to rotate, mixing the precipitant in the mixing tank. After thorough mixing, the manual ball valve is opened, allowing the precipitant to flow into the feed pipe. The precipitant is sprayed through a nozzle into the feed port of the storage tank. Guided by the annular guide plate, it flows into the inner cavity of the storage tank. Due to the rotation of the stirring shaft, the storage tank rotates together, and the precipitant in the storage tank falls down along the discharge port, evenly adding to the second mixture. Under the combined stirring action of the stirring rod and stirring blades, it mixes evenly with the second mixture. After precipitation and filtration, zirconium hydroxide is obtained and ready for use.

[0021] The beneficial effects of this invention are that, through the vessel, mixing tank, servo motor, stirring shaft, and rotating shaft, the various components of the precipitant can be mixed, and the mixed precipitant can be added to the vessel and stirred together with the second mixture; through the filter, impurities in the precipitant can be filtered out to avoid affecting subsequent reactions; through the storage tank, the precipitant can be added slowly and evenly to the second mixture, which facilitates the uniformity of precipitant distribution during stirring, improves the precipitation effect, and is conducive to the smooth progress of the reaction. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 2 for Figure 1 Enlarged schematic diagram of the structure of section A in the middle.

[0025] Figure 3 This is a schematic diagram of the structure of the storage tank of this utility model.

[0026] Figure 4 This is a schematic diagram of the structure of the annular guide plate of this utility model.

[0027] Figure 5 This is a schematic diagram of the internal structure of the filter of this utility model.

[0028] In the diagram: 1. Kettle body, 2. Mixing tank, 3. Servo motor, 4. Stirring shaft, 5. Rotating shaft, 6. Storage tank, 7. Feeding port, 8. Discharge port, 9. Annular baffle, 10. Annular guide plate, 11. First vertical bevel gear, 12. Second vertical bevel gear, 13. Horizontal bevel gear, 14. Guide pipe, 15. Manual ball valve, 16. Feed pump, 17. Filter, 18. Shell, 19. Top cover, 20. Filter inlet, 21. Filter outlet, 22. Receiving cavity, 23. Filter screen, 24. Perforated plate, 25. Nozzle, 26. Stirring rod, 27. Stirring blade, 28. Spiral stirring blade. Detailed Implementation

[0029] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0030] Example

[0031] like Figure 1-5As shown, this utility model embodiment provides a stirring device for preparing zirconia powder, including a vessel body 1, a mixing tank 2, a servo motor 3, a stirring shaft 4, and a rotating shaft 5. The vessel body 1 has a feed inlet on its side and a discharge outlet at its bottom, with a discharge valve at the outlet. A storage tank 6 is located inside the vessel body 1. The storage tank 6 has a feeding port 7 at the center of its top and multiple discharge ports 8 at its bottom. An annular baffle 9 is provided at the top edge of the feeding port 7. An annular guide plate 10 is fixed inside the storage tank 6, located below the feeding port 7. 0 is an inverted cone shape with an upper diameter larger than a lower diameter; a gear sleeve is provided in the middle of the upper part of the vessel body 1, and a first vertical bevel gear 11, a second vertical bevel gear 12 and a horizontal bevel gear 13 are provided inside the gear sleeve, and the first vertical bevel gear 11 and the second vertical bevel gear 12 are respectively meshed and connected to the left and right sides of the horizontal bevel gear 13; an inspection port (not shown in the figure) and an observation window (not shown in the figure) are provided on the shell 18 of the vessel body 1. The inspection port (not shown in the figure) facilitates the maintenance of the inside of the vessel body 1 by the staff, and the observation window (not shown in the figure) facilitates the on-site personnel to observe the operation of the inside of the vessel body 1.

[0032] The mixing tank 2 is located on the left side above the vessel body 1. A feeding port is located at the top of the mixing tank 2, and a ramp is located at the bottom. A guide pipe 14 is connected to the bottom of the mixing tank 2, with the connection between the guide pipe 14 and the mixing tank 2 located at the lower end of the ramp. A manual ball valve 15, a feed pump 16, and a filter 17 are installed on the guide pipe 14. The filter 17 includes a housing 18, with a removable top cover 19 on the top. A filter inlet 20 is located at the left end of the housing 18, and a filter outlet 21 is located at the right end. The interior of the housing 18 contains several receiving cavities 22. Each receiving cavity 22 has perforated plates 24 on both its left and right sides, and each receiving cavity 22 is filled with a filter screen 23. The receiving cavity 22 separates the filter screens 23 from each other and positions them. The filter 17 can not only filter out impurities in the precipitant, but also slow down the flow rate of the precipitant in the feed pipe 14 to a certain extent. In addition, the filter screens 23 in the filter 17 are easy to replace. If they are partially damaged, they can be replaced locally and the rest can be used, saving material costs. One end of the feed pipe 14 passes through the side wall of the vessel body 1 and extends into the feeding port 7 of the storage tank 6. A nozzle 25 is installed at one end of the feed pipe 14. The nozzle 25 is located between the annular baffle 9 and the annular guide plate 10. In this way, while the annular guide plate 10 provides guidance for the precipitant, the annular baffle 9 can also be used to reduce the amount of precipitant sprayed out from the top.

[0033] The servo motor 3 is located on the right side above the vessel body 1, and a motor base is fixed to the bottom of the servo motor 3. The output shaft of the servo motor 3 passes through the gear sleeve and is fixedly connected to the second vertical bevel gear 12.

[0034] The stirring shaft 4 is vertically installed in the vessel body 1. The top end of the stirring shaft 4 passes through the top wall of the vessel body 1 and enters the gear sleeve, and is fixedly connected to the horizontal bevel gear 13. The stirring shaft 4 and the top wall of the vessel body 1 are sealed and rotatably connected. The middle part of the stirring shaft 4 passes through the center of the storage tank 6, and the stirring shaft 4 and the storage tank 6 are sealed and fixedly connected. Several stirring rods 26 are provided at the lower end of the stirring shaft 4, and each stirring rod 26 is provided with multiple stirring blades 27. The stirring rods 26 on the left and right sides of the stirring shaft 4 are arranged alternately, and the stirring blades 27 on the upper and lower sides of the stirring rods 26 are arranged alternately. This design can improve the stirring capacity of the stirring rods 26 and stirring blades 27 and improve the mixing efficiency.

[0035] The left end of the rotating shaft 5 is rotatably connected to the mixing box 2, and the left end of the rotating shaft 5 is provided with a spiral stirring blade 28. The right end of the rotating shaft 5 is inserted into the gear sleeve and fixedly connected to the first vertical bevel gear 11.

[0036] The working principle of this invention is as follows: A second mixture is added to the vessel 1, making the liquid level lower than the storage tank 6 and the bottom discharge port 8. Simultaneously, oxalic acid, ammonium bicarbonate, ammonia, and sodium hydroxide are added to the mixing tank 2. The servo motor 3 is started, driving the stirring shaft 4 and rotating shaft 5 to rotate. The stirring shaft 4 drives the stirring rod 26 and stirring blades 27 to rotate, stirring the second mixture in the vessel 1. Meanwhile, the rotating shaft 5 drives the spiral stirring blades 28 to rotate, mixing the precipitant in the mixing tank 2. After thorough mixing, the manual ball valve is opened. Valve 15 allows the precipitant to be introduced into the feed pipe 14. The precipitant is sprayed out through the nozzle 25 and into the feed port 7 of the storage tank 6. Under the guidance of the annular guide plate 10, it flows into the inner cavity of the storage tank 6. Due to the rotation of the stirring shaft 4, the storage tank 6 is rotated together. The precipitant in the storage tank 6 is sprinkled down along the discharge port 8 and evenly added to the second mixture. Under the joint stirring action of the stirring rod 26 and the stirring blade 27, it is mixed evenly with the second mixture. After precipitation and filtration, zirconium hydroxide is obtained and set aside.

[0037] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A stirring device for preparing zirconia powder, comprising a vessel, a mixing chamber, a servo motor, a stirring shaft, and a rotating shaft, characterized in that: The side of the vessel body is provided with a feed inlet, the bottom of the vessel body is provided with a discharge outlet, the inside of the vessel body is provided with a storage tank, the top center of the storage tank is provided with a feeding port, the bottom is provided with multiple discharge ports, the middle of the upper part of the vessel body is provided with a gear sleeve, the inside of the gear sleeve is provided with a first vertical bevel gear, a second vertical bevel gear and a horizontal bevel gear, and the first vertical bevel gear and the second vertical bevel gear are respectively meshed and connected to the left and right sides of the horizontal bevel gear; The mixing chamber is located on the left side above the vessel body. The top of the mixing chamber is equipped with a feeding port, and the bottom of the mixing chamber is connected to a guide pipe. A filter is installed on the guide pipe. One end of the guide pipe passes through the side wall of the vessel body and extends into the feeding port of the storage tank. A nozzle is installed on one end of the guide pipe. The servo motor is located on the right side above the vessel body. The output shaft of the servo motor passes through the gear sleeve and is fixedly connected to the second vertical bevel gear. The stirring shaft is vertically installed in the vessel body. The top of the stirring shaft passes through the top wall of the vessel body and enters the gear sleeve, where it is fixedly connected to the horizontal bevel gear. The middle part of the stirring shaft passes through the center of the storage tank. Several stirring rods are installed at the lower end of the stirring shaft, and each stirring rod is equipped with multiple stirring blades. The left end of the rotating shaft is rotatably connected to the mixing box, and a spiral stirring blade is provided on the left end of the rotating shaft. The right end of the rotating shaft passes through a gear sleeve and is fixedly connected to the first vertical bevel gear.

2. The stirring device for preparing zirconium oxide powder according to claim 1, characterized in that: A discharge valve is installed at the outlet of the reactor body.

3. The stirring device for preparing zirconium oxide powder according to claim 2, characterized in that: The vessel body is equipped with an inspection port and an observation window.

4. The stirring device for preparing zirconium oxide powder according to claim 3, characterized in that: The top edge of the feeding port of the storage tank is provided with an annular baffle. An annular guide plate is fixed inside the storage tank and is located below the feeding port. The annular guide plate is an inverted cone with a larger diameter at the top than at the bottom.

5. The stirring device for preparing zirconium oxide powder according to claim 4, characterized in that: The feed pipe is also equipped with a manual ball valve and a feed pump.

6. The stirring device for preparing zirconium oxide powder according to claim 5, characterized in that: The filter includes a housing with a top cover. The housing has a filter inlet at the left end and a filter outlet at the right end. The housing has several receiving cavities inside, each with a perforated plate on both the left and right sides, and each cavity is filled with a filter screen.

7. The stirring device for preparing zirconium oxide powder according to claim 6, characterized in that: The stirring rods located on the left and right sides of the stirring shaft are arranged alternately, and the stirring blades located on the upper and lower sides of the stirring rods are arranged alternately.

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