Titration forming device and method for zirconia microsphere production

Abstract

The invention discloses a titration forming device and method for zirconium oxide microbead production, and relates to the technical field of zirconium oxide microbead titration forming. The titration forming device for zirconia microsphere production comprises an outer separation circular table plate, a plurality of placement separation holes are formed in the upper surface of the outer separation circular table plate in a penetrating mode, cooling liquid in a first pipeline flows into a second pipeline through a barrel, an inner supporting plate is matched with the outer separation circular table plate, and the inner supporting plate is communicated with the second pipeline through a discharging opening and a guiding cavity. The outer partition circular table plate is connected with the rotating end, and a rolling separation plate is arranged below a discharging port of the second pipeline. According to the titration forming device and method for producing the zirconium oxide microbeads, by adjusting the outflow and inflow of the cylinder and enabling the outflow and inflow to be dynamically balanced, a smooth liquid channel is formed, small-diameter microbeads are isolated in the placement isolation holes, the possibility that the small-diameter microbeads are adhered to other microbeads is reduced, and the production efficiency of the zirconium oxide microbeads is improved. In the conveying process, the microbeads with different particle sizes are separated through gravity, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of zirconium oxide microbead titration molding, and in particular to a titration molding device and method for producing zirconium oxide microbeads. Background Art

[0002] In the production process of zirconia microbeads, the titration molding device is one of the key equipment to achieve microbead molding, and is particularly suitable for preparing zirconia microbeads with small particle size and high sphericity requirements.

[0003] Referring to Chinese Patent Publication No.: CN219338053U, a forming device for zirconia ceramic microbead green bodies includes a green body forming mechanism, a lifting motor installed on one side of the top of the green body forming mechanism, and a vibration motor installed on one side of the bottom. The top of the green body forming mechanism is provided with a titration mechanism, and a knocking motor installed on the top of the titration mechanism. The green body forming mechanism includes a collecting tank, a collecting base is fixedly installed at the bottom of the collecting tank, a solution tank is opened inside the collecting tank, wherein the solution tank is provided with green body forming liquid, the bottom of the solution tank is symmetrically provided with a drain pipe, and the top of the drain pipe is threadedly connected with a drain plug, wherein a plurality of heating devices are symmetrically installed on both sides of the collecting tank near the solution tank. By setting the green body forming mechanism, the raw materials for producing zirconia ceramic microbeads can be dripped into the green body forming liquid for heating and molding, and by setting the titration mechanism, the raw materials of zirconia ceramic microbeads can be titrated.

[0004] When producing zirconia microbeads by the titration molding method, small microbeads are the majority. In order to improve production efficiency, multiple titration nozzles are arranged in a circumferential array. After a large number of microbeads sink freely, they will gather at the bottom of the molding medium tank and easily adhere to each other to form agglomerates. In particular, small zirconia microbeads have a large specific surface area, and the surface interaction force between the microbeads is stronger, making it easier for the microbeads to attract each other. Small zirconia microbeads have relatively poor fluidity, and smaller zirconia microbeads are more significantly affected by Brownian motion, and there will be more irregular motion in the molding medium, which makes The probability of collision between microbeads increases, and small zirconia microbeads are more likely to gather together in the molding medium and are difficult to disperse. This not only increases the difficulty of the subsequent separation process, but may also cause damage to the microbeads during the separation process, affecting the yield and product quality. If the microbeads at the bottom are regularly moved up and removed by lifting the filter plate, the upper solution of the coolant will fluctuate significantly during the upward movement, which will not only affect the molding of the zirconia microbeads on the upper layer of the coolant, but also bring out some of the newly fallen microbeads, introducing defective products. The diameter of zirconia microbeads has a span, and they need to be collected and then screened separately, which reduces work efficiency. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a titration molding device and method for the production of zirconia microbeads. By adjusting the outflow and inflow of the cylinder and achieving dynamic balance between the two, a smooth liquid channel is formed, and small-diameter microbeads are isolated in the placement holes, reducing the possibility of small-diameter microbeads sticking to other microbeads. Gravity is used to separate microbeads of different particle sizes during the transportation process, reducing particle adhesion, reducing subsequent processing steps, improving production efficiency, and facilitating large-scale production.

[0006] Technical solution: To achieve the above objectives, the present invention is implemented through the following technical solution: A titration molding device for the production of zirconia microbeads, comprising: a titration table, a cylinder is placed in the middle of the titration table, the coolant in the first pipe flows into the second pipe through the cylinder, the liquid level of the first pipe is above the liquid level of the second pipe, the outflow and inflow of the cylinder per unit time are balanced, an outer partition circular plate is provided in the cylinder, a plurality of placement holes are opened through the upper surface of the outer partition circular plate, an inner support plate is fixedly connected to the inner wall of the cylinder, the inner support plate is adapted to the outer partition circular plate, a blanking port is opened through the upper surface of the inner support plate, the bottom of the blanking port is connected to the second pipe through a guide cavity, the outer partition circular plate is connected to the rotating end of the stepping motor through a rotating shaft, a rolling plate is provided below the discharge port of the second pipe, and the rolling plate is used to separate microbeads of different particle sizes.

[0007] Preferably, the diameter of the placement hole is 0.03-0.1 mm, the outer spacer frustum plate is a hollow frustum, and the angle between the generatrix of the outer spacer frustum plate and the vertical line is 30°-35°.

[0008] Preferably, the top of the outer partition circular plate is connected to a top plate, the inner support plate is slidingly connected to the outer partition circular plate, the inner wall of the inner support plate is connected to an inclined plate, the bottom end of the inclined plate is connected to an end arc plate, the inclined plate and the end arc plate constitute a material guide plate, the upper edges of both ends of the material guide plate are connected to side plates, the top of each side plate is connected to the bottom of one end of the inner support plate, one side of each side plate is connected to the inner wall of the cylinder, a circular hole is penetrated through the upper surface of the top end of the inclined plate, the rotating shaft passes through the bottom wall of the cylinder and the circular hole in turn and is connected to the bottom of the top plate.

[0009] Preferably, the angle between the inclined plate and the horizontal line is 60-65°, two side holes are opened through the side of the bottom of the cylinder, the plane of the end arc plate away from the end of the rotating shaft is smoothly connected to the plane of the bottom of a side hole, the guide cavity is arranged between the two side plates and the guide plate, the top of the guide cavity is connected to the blanking port, and the bottom of the guide cavity is connected to a side hole.

[0010] Preferably, a horizontal plate is connected to the middle of the titration platform, a bottom plate is connected to the bottom of the titration platform, the cylinder is placed on the horizontal plate, the first pipe and the second pipe are arranged on both sides of the titration platform, the top of the first pipe is connected to the liquid storage box through a first flow control valve, the bottom of the first pipe is connected to the liquid inlet pipe through a second flow control valve, the liquid inlet pipe is connected to one of the side holes, one end of the other side hole is connected to the guide cavity, the other end of the side hole is connected to the second pipe through a third flow control valve, and the bottom of the second pipe is connected to a fourth flow control valve.

[0011] Preferably, the first flow control valve, the second flow control valve, the third flow control valve and the fourth flow control valve are all electrically connected to the controller through wires, and the liquid inlet pipe and the liquid outlet pipe are both equipped with flow meters, and the flow meters are used to measure the amount of liquid entering and flowing out of the cylinder per unit time. The liquid level difference between the liquid level of the first pipeline and the liquid level of the second pipeline is 5-10 cm, and the liquid flow rate of the second flow control valve and the liquid flow rate of the third flow control valve per unit time maintain dynamic balance, the liquid flow rate of the second flow control valve and the liquid flow rate of the first flow control valve per unit time maintain dynamic balance, and the liquid flow rate of the third flow control valve and the liquid flow rate of the fourth flow control valve per unit time maintain dynamic balance.

[0012] Preferably, a liquid collecting cylinder is provided directly below the fourth flow control valve, the inner wall of the liquid collecting cylinder is connected to a connecting plate, a pumping hole is provided through the side of the bottom of the liquid collecting cylinder, the pumping hole is connected to the pump body through a liquid pumping tube, and the pump body is connected to the liquid storage box through a liquid discharge tube, a pumping port is provided on the top of the liquid collecting cylinder, the bottom of the pumping port is connected to a support plate, one end of the support plate is connected to the inner wall of the liquid collecting cylinder, the top of the support plate is connected to a positioning bottom strip, one side of the connecting plate is connected to a positioning middle strip, one side of the positioning bottom strip is connected to the connecting plate, the positioning bottom strip is adapted to the positioning middle strip, and the positioning bottom strip consists of a semicircular strip plate and straight plates at both ends of the semicircular strip plate.

[0013] Preferably, a screening cylinder is provided on the upper part of the liquid collecting cylinder, the bottom of the screening cylinder is slidably connected to the support plate, a plurality of liquid outlet holes are provided on the side of the screening cylinder, a rolling plate is provided in the middle of the screening cylinder, a plurality of first screen bars, a plurality of second screen bars and a plurality of third screen bars are provided on the upper surface of the rolling plate, the rolling plate where the plurality of first screen bars are located is a fine separation plate, the rolling plate where the plurality of second screen bars are located is a medium separation plate, the rolling plate where the plurality of third screen bars are located is a coarse separation plate, and the fine The dividing plate is located at the center of the rolling plate, and the middle dividing plate is located between the fine dividing plate and the coarse dividing plate. The ratio of the diameter of the fine dividing plate to the width of the middle dividing plate and the width of the coarse dividing plate is 5:3:2. The bottom at the edge of the fine dividing plate is connected to the bottom wall of the screening drum through the first partition plate, and the bottom at the edge of the middle dividing plate is connected to the bottom wall of the screening drum through the second partition plate. A first collecting chamber is provided between the first partition plates, a second collecting chamber is provided between the first partition plate and the second partition plate, and a third collecting chamber is provided between the second partition plate and the inner wall of the screening drum.

[0014] Preferably, the width of the first screen bar is 0.03-0.1 mm, the width of the second screen bar is 0.1-0.5 mm, and the width of the third screen bar is 0.5-2 mm.

[0015] A method for producing zirconium oxide microbeads is applied to a titration molding device for producing zirconium oxide microbeads. A communicating vessel is formed by a first pipe, a cylinder, and a second pipe. The difference in liquid levels between the first and second pipes is used as the driving force for liquid flow. The speeds of liquid inlet and outlet are jointly adjusted by a first flow control valve, a second flow control valve, a third flow control valve, and a fourth flow control valve to control the flow rate of the liquid channel in the cylinder. Microbeads with a diameter of 0.03-0.1 mm formed at the bottom of the cooling liquid are allowed to enter the placement holes by rotating an outer partitioning disc. The isolated microbeads and the microbeads at the edge of the outer partitioning disc fall onto a rolling plate via a guide cavity, a liquid outlet pipe, and a second pipe. The rolling plate separates the microbeads into different collection cavities according to screening diameter.

[0016] Beneficial Effects: The present invention provides a titration molding device and method for producing zirconium oxide microbeads. Compared with the prior art, the present invention has the following beneficial effects: 1. Through a plurality of solenoid valves, the outflow and inflow of the cylinder are precisely controlled and adjusted, and the two are dynamically balanced, so that the solution at the bottom of the cylinder flows slowly, forming a gentle liquid channel for carrying away the cooled and molded microbeads. Through the slowly rotating outer partition plate and the matching inner support plate, the small-diameter microbeads are isolated in the placement holes, reducing the possibility of small-diameter microbeads adhering to the remaining microbeads. The disappearance of the bottom support allows the microbeads to be collected in a direction on the placement holes and on the outer partition plate. During the transportation process, the microbeads of different particle sizes are separated by gravity. The structure is simple, particle adhesion is reduced, and subsequent processing steps are reduced, thereby improving production efficiency and facilitating large-scale production.

[0017] 2. Both the first and second pipes are slender pipes with large resistance. A slightly larger liquid level difference is required to promote the smooth flow of the liquid to avoid slow flow or even stagnation due to excessive resistance. Therefore, the liquid level difference between the first and second pipes cannot be less than 5 cm. In order to ensure the smooth flow of liquid in the first pipe, cylinder and second pipe, it is necessary to avoid turbulence, impact or liquid level fluctuation caused by excessive height difference. Therefore, the liquid level difference between the first and second pipes cannot be too large. The liquid level difference between the first and second pipes needs to be less than 10 cm, so that the liquid level difference between the first and second pipes is maintained at 5-10 cm.

[0018] 3. The arc surface at the bottom of the outer partition frustum rotates relative to the large-diameter microbeads. Slight rotation will make the contact between the large-diameter microbeads and the container wall dynamic, preventing the two microbeads from maintaining a fixed contact point for a long time. After a brief contact, they will separate due to rotation, which can prevent adhesion when the surface is not completely hardened. Rotation can reduce surface adsorption forces, such as the cumulative effect of van der Waals forces, reducing the probability of adhesion; slow rotation makes the contact between the microbeads and the cooling medium more uniform in all directions, avoiding softening areas of the surface caused by local slow cooling, and reducing the possibility of adhesion due to local non-solidification. The relative movement of the microbead surface and the cooling medium during rotation can "polish" the surface, making the surface smoother and reducing mechanical bite or adsorptive adhesion caused by surface roughness; even if the microbeads gather due to gravity or flow field, slight rotation will disperse them through centrifugal force or collision, reducing the chance of intensive contact and reducing the risk of adhesion from the root.

[0019] 4. There are many microbeads that have just fallen onto the rolling plate, and the number of microbeads with a diameter of 0.03-0.1mm is the largest, requiring more screening time. Therefore, the screening distance of the first screen bar needs to be extended. The ratio of the diameter of the subdividing plate to the width of the medium dividing plate and the width of the coarse dividing plate is 5:3:2, which makes it easier for microbeads with diameters of 0.03-0.1mm, 0.1-0.5mm, and 0.5-2mm to pass through the screening holes and enter the first, second, and third collection chambers respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the present application and enable those skilled in the relevant art to make and use the present application.

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 for Figure 1 Schematic diagram of the structure from another perspective.

[0024] Figure 3 for Figure 1 Schematic diagram of the structure after removing the titration table, horizontal plate and bottom plate.

[0025] Figure 4 It is a cross-sectional view of the cylinder.

[0026] Figure 5 It is a structural diagram of the stepping motor, outer partition circular table plate, placement of partition holes, inclined plate, and side plates.

[0027] Figure 6 This is a separation diagram of the part where the outer partition frustum plate and the inner support plate are located.

[0028] Figure 7 It is a structural diagram of the inner support plate, side plate, end arc plate and inclined plate.

[0029] Figure 8 It is a structural schematic diagram of the first pipeline, the cylinder, and the second pipeline.

[0030] Figure 9 It is a structural diagram of the liquid collecting cylinder, screening cylinder and support plate.

[0031] Figure 10 This is a diagram showing the separation of the liquid collecting cylinder and its internal structure.

[0032] Figure 11 This is a cross-sectional view of the part where the screening cylinder is located.

[0033] Figure 12 A top view of the rolling plate.

[0034] The reference numerals in the figure are: 11, titration table; 12, horizontal plate; 13, bottom plate; 21, liquid storage box; 22, liquid discharge pipe; 23, pump body; 24, liquid extraction pipe; 31, first pipeline; 32, cylinder; 33, second pipeline; 34, first flow control valve; 35, second flow control valve; 36, liquid inlet pipe; 37, liquid outlet pipe; 38, third flow control valve; 39, fourth flow control valve; 41, stepping motor; 42, rotating shaft; 43, outer spacer plate; 44, inner support plate; 45, top plate; 46, placement hole; 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111 7. Side plate; 48. Inclined plate; 49. End arc plate; 51. Guide cavity; 52. Round hole; 53. Side hole; 55. Dropping port; 61. Liquid collecting cylinder; 62. Pumping hole; 63. Connecting plate; 64. Pumping port; 65. Positioning middle bar; 66. Positioning bottom bar; 67. Support plate; 71. Screening cylinder; 72. Liquid outlet; 73. Rolling plate; 74. First screen bar; 75. Second screen bar; 76. Third screen bar; 81. First partition plate; 82. Second partition plate; 83. First collecting chamber; 84. Second collecting chamber; 85. Third collecting chamber.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] like Figure 1 - Figure 12As shown, the embodiment of the present invention provides a titration forming device for producing zirconium oxide microbeads, comprising: a titration platform 11, a cylinder 32 is placed in the middle of the titration platform 11, the coolant in the first pipe 31 flows into the second pipe 33 through the cylinder 32, the liquid level of the first pipe 31 is located above the liquid level of the second pipe 33, the outflow and inflow of the cylinder 32 per unit time are kept balanced, an outer partition plate 43 is provided in the cylinder 32, and the upper surface of the outer partition plate 43 is penetrated A number of placement holes 46 are opened, and an inner support plate 44 is fixedly connected to the inner wall of the cylinder 32. The inner support plate 44 is adapted to the outer partition circular plate 43. A drop-out port 55 is opened through the upper surface of the inner support plate 44. The bottom of the drop-out port 55 is connected to the second pipe 33 through the guide cavity 51. The outer partition circular plate 43 is connected to the rotating end of the stepper motor 41 through the rotating shaft 42. A roller plate 73 is provided below the discharge port of the second pipe 33. The roller plate 73 is used to separate microbeads of different particle sizes.

[0038] The diameter of the spacer hole 46 is 0.03-0.1 mm, the outer spacer frustum plate 43 is a hollow frustum, and the angle between the generatrix of the outer spacer frustum plate 43 and the vertical line is 30°-35°.

[0039] The top of the outer partition circular cone plate 43 is connected to the top plate 45, the inner support plate 44 is slidably connected to the outer partition circular cone plate 43, the inner wall of the inner support plate 44 is connected to the inclined plate 48, the bottom end of the inclined plate 48 is connected to the end arc plate 49, the inclined plate 48 and the end arc plate 49 constitute a material guide plate, the upper edges of both ends of the material guide plate are connected to the side plates 47, the top of each side plate 47 is connected to the bottom of one end of the inner support plate 44, one side of each side plate 47 is connected to the inner wall of the cylinder 32, and a circular hole 52 is opened on the upper surface of the top end of the inclined plate 48. The rotating shaft 42 passes through the bottom wall of the cylinder 32 and the circular hole 52 in sequence and is connected to the bottom of the top plate 45.

[0040] The angle between the inclined plate 48 and the horizontal line is 60-65°. Two side holes 53 are opened through the side surface of the bottom of the cylinder 32. The plane of the end arc plate 49 away from the end of the rotating shaft 42 is smoothly connected to the plane at the bottom of one side hole 53. The guide cavity 51 is arranged between the two side plates 47 and the guide plate. The top of the guide cavity 51 is connected to the blanking port 55, and the bottom of the guide cavity 51 is connected to a side hole 53.

[0041] A horizontal plate 12 is connected to the middle of the titration platform 11, and a bottom plate 13 is connected to the bottom of the titration platform 11. The cylinder 32 is placed on the horizontal plate 12. The first pipe 31 and the second pipe 33 are arranged on both sides of the titration platform 11. The top of the first pipe 31 is connected to the liquid storage box 21 through a first flow control valve 34, and the bottom of the first pipe 31 is connected to the liquid inlet pipe 36 through a second flow control valve 35. The liquid inlet pipe 36 is connected to a side hole 53, and one end of the other side hole 53 is connected to the guide cavity 51. The other end of the side hole 53 is connected to the second pipe 33 through a third flow control valve 38, and the bottom of the second pipe 33 is connected to the fourth flow control valve 39.

[0042] The first flow control valve 34, the second flow control valve 35, the third flow control valve 38, and the fourth flow control valve 39 are all electrically connected to the controller through wires. The liquid inlet pipe 36 and the liquid outlet pipe 37 are both installed with flow meters, which are used to measure the amount of liquid entering and flowing out of the cylinder 32 per unit time. The liquid level difference between the liquid level in the first pipe 31 and the liquid level in the second pipe 33 is 5-10 cm. The liquid flow rate of the second flow control valve 35 and the liquid flow rate of the third flow control valve 38 per unit time maintain a dynamic balance. The liquid flow rate of the second flow control valve 35 and the liquid flow rate of the first flow control valve 34 per unit time maintain a dynamic balance. The liquid flow rate of the third flow control valve 38 and the liquid flow rate of the fourth flow control valve 39 per unit time maintain a dynamic balance.

[0043] A liquid collecting cylinder 61 is provided directly below the fourth flow control valve 39. The inner wall of the liquid collecting cylinder 61 is connected to a connecting plate 63. A pumping hole 62 is provided on the side of the bottom of the liquid collecting cylinder 61. The pumping hole 62 is connected to the pump body 23 through the liquid pumping tube 24. The pump body 23 is connected to the liquid storage box 21 through the liquid discharge tube 22. A pumping port 64 is provided on the top of the liquid collecting cylinder 61. The bottom of the pumping port 64 is connected to a support plate 67. One end of the support plate 67 is connected to the inner wall of the liquid collecting cylinder 61. The top of the support plate 67 is connected to a positioning bottom strip 66. One side of the connecting plate 63 is connected to a positioning middle strip 65. One side of the positioning bottom strip 66 is connected to the connecting plate 63. The positioning bottom strip 66 is adapted to the positioning middle strip 65. The positioning bottom strip 66 consists of a semicircular strip plate and straight plates at both ends of the semicircular strip plate.

[0044] A screening cylinder 71 is provided on the upper part of the liquid collecting cylinder 61. The bottom of the screening cylinder 71 is slidably connected to the support plate 67. A plurality of liquid outlet holes 72 are provided on the side of the screening cylinder 71. A rolling plate 73 is provided in the middle of the screening cylinder 71. A plurality of first screen bars 74, a plurality of second screen bars 75, and a plurality of third screen bars 76 are provided on the upper surface of the rolling plate 73. The rolling plate 73 where the plurality of first screen bars 74 are located is a fine separation plate, the rolling plate 73 where the plurality of second screen bars 75 are located is a medium separation plate, and the rolling plate 73 where the plurality of third screen bars 76 are located is a coarse separation plate. The subdivision plate is located at the center of the rolling plate 73, and the middle separation plate is located between the subdivision plate and the coarse separation plate. The ratio of the diameter of the subdivision plate to the width of the middle separation plate and the width of the coarse separation plate is 5:3:2. The bottom at the edge of the subdivision plate is connected to the bottom wall of the screening cylinder 71 through the first partition plate 81, and the bottom at the edge of the middle separation plate is connected to the bottom wall of the screening cylinder 71 through the second partition plate 82. A first collecting chamber 83 is provided between the first partition plates 81, a second collecting chamber 84 is provided between the first partition plate 81 and the second partition plate 82, and a third collecting chamber 85 is provided between the second partition plate 82 and the inner wall of the screening cylinder 71.

[0045] The width of the first screen bar 74 is 0.03-0.1 mm, the width of the second screen bar 74 is 0.1-0.5 mm, and the width of the third screen bar 76 is 0.5-2 mm.

[0046] A method for producing zirconium oxide microbeads is applied to a titration molding device for producing zirconium oxide microbeads. A communicating vessel is formed by a first pipe 31, a cylinder 32, and a second pipe 33. The liquid level difference between the first pipe 31 and the second pipe 33 is used as the driving force for liquid flow. The speed of liquid inlet and outlet is jointly adjusted by a first flow control valve 34, a second flow control valve 35, a third flow control valve 38, and a fourth flow control valve 39 to control the flow rate of the liquid channel in the cylinder 32. Microbeads with a diameter of 0.03-0.1 mm formed at the lower part of the cooling liquid are caused to enter the placement partition hole 46 by rotating the outer partition cone plate 43. The isolated microbeads and the microbeads at the edge of the outer partition cone plate 43 fall onto the rolling plate 73 via the guide cavity 51, the liquid outlet pipe 37, and the second pipe 33. The rolling plate 73 separates the microbeads into different collection chambers according to the screening diameter.

[0047] During use, in order to control costs and reduce floor space, the first pipe 31 and the second pipe 33 are both slender pipes with large resistance. A slightly larger liquid level difference is required to promote the smooth flow of the liquid to avoid slow flow or even stagnation due to excessive resistance. Therefore, the liquid level difference between the first pipe 31 and the second pipe 33 cannot be less than 5 cm. In order to ensure the smooth flow of liquid in the first pipe 31, the cylinder 32, and the second pipe 33, it is necessary to avoid turbulence, impact or liquid level fluctuation caused by excessive height difference. Therefore, the liquid level difference between the first pipe 31 and the second pipe 33 cannot be too large. The liquid level difference between the first pipe 31 and the second pipe 33 needs to be less than 10 cm. After the liquid level difference between the first pipe 31 and the second pipe 33 is maintained at 5-10 cm, the first flow control valve 34, the second flow control valve 35, the third flow control valve 38, and the fourth flow control valve 39 are opened synchronously to make the flow rate of all flow control valves the same per unit time. To slow the flow of liquid at the bottom of cylinder 32, allowing the liquid to flow slowly between the first and second pipes 31, 33, and cylinder 32, and thus maintain a stable liquid level in cylinder 32, it is necessary not only to control the difference in liquid levels between the first and second pipes 31, 33, but also to reduce the size of the side hole 53 and increase flow resistance. This ensures that "inflow = outflow" of liquid within cylinder 32. If the inflow and outflow values ​​within cylinder 32 differ by more than 5%, timely adjustments must be made by controlling the various solenoid valves. The diameter of the side hole 53 should ideally be 4-6 mm, but this can be adjusted based on actual production needs.

[0048] The smallest microbeads produced by the titration molding method can be 0.03mm, and the commonly used beads are 0.05mm. Most of the diameters of the zirconia microbeads produced by the titration molding method are concentrated between 0.03-1mm, which are small diameter microbeads.

[0049] After the zirconium oxide powder is mixed with the mixed glue, it is added to the titration molding equipment. The mixed material is heated to a certain temperature and kept warm by the equipment so that the material becomes a liquid with suitable fluidity. Turn on the stepper motor 41, and the rotating end of the stepper motor 41 drives the outer partition circular plate 43 to rotate through the rotating shaft 42. The outer partition circular plate 43 rotates one circle every 6 seconds. The rotation speed of the outer partition circular plate 43 is low, which reduces the impact on the solution in the cylinder 32, especially the liquid surface. The microbead material relies on the surface tension of the liquid, and the liquid drips out in the form of a single liquid bead through the titration nozzle and is pre-formed into zirconium oxide ceramic microbeads. The microbeads are shaped by air cooling during the falling process, and then fall into the coolant by gravity to form.

[0050] The formed microbeads continue to sink and contact the outer partition cone plate 43. The outer partition cone and the inner support plate 44 are both made of polytetrafluoroethylene. The outer partition cone and the inner support plate 44 do not adhere to the microbeads. Some small microbeads with diameters between 0.03-1mm fall directly into the placement holes 46, and some microbeads with diameters between 0.03-1mm move downward along the surface of the outer partition cone plate 43. The slow rotation of the outer partition cone plate 43 assists the remaining small microbeads to roll into the empty placement holes 46, thereby improving the collection rate. The microbeads that do not enter the placement holes 46 move to the bottom of the outer partition cone plate 43, and the microbeads with large diameters gather at the bottom of the outer partition cone plate 43. Large-diameter droplets are more likely to maintain a spherical shape under the action of surface tension. Surface tension causes the liquid to tend to the minimum surface area, and the spherical shape is the optimal form. In the spherical form, the contact area between the droplets is minimal, and the surface tension will resist the deformation of the droplets. Even if there is a short contact, they are easily separated due to the tension, reducing the possibility of adhesion. The outer partition circular plate 43 rotates slowly, and the gap between the outer partition circular plate 43 and the inner wall of the cylinder 32 is less than 0.03mm. The arc surface at the bottom of the outer partition circular plate 43 rotates relative to the large-diameter microbeads. Slight rotation will make the contact between the large-diameter microbeads and the container wall dynamic, preventing the two microbeads from maintaining a fixed contact point for a long time. For microbeads that are not completely solidified, they are separated by rotation after a short contact, which can prevent adhesion when the surface is not completely hardened. For microbeads that have been initially solidified, rotation can reduce surface adsorption forces, such as the cumulative effect of van der Waals forces, and reduce the probability of adhesion. Slow rotation makes the contact between the microbeads and the cooling medium more uniform in all directions, avoids softening areas on the surface caused by slow local cooling, and reduces the possibility of adhesion due to local non-solidification. At the same time, the relative movement between the surface of the microbeads and the cooling medium during rotation can "polish" the surface, making it smoother and reducing mechanical bite or adsorptive adhesion caused by surface roughness; even if the microbeads gather due to gravity or flow field, slight rotation will disperse them through centrifugal force or collision, reducing the chance of intensive contact and reducing the risk of adhesion from the root.

[0051] When part of the outer partition circular plate 43 rotates to the top of the blanking port 55, the bottom of the space is no longer supported by the inner support plate 44, and the microbeads in the space suddenly lose their bottom support. The outer partition circular plate 43 rotates slowly, giving the microbeads a long time to fall. The microbeads enter the guide cavity 51 through the blanking hole. The guide cavity 51 is an inclined nearly triangular shape, and the inclined angle of the inclined plate 48 is large, which is convenient for guiding the microbeads to move toward the bottom of the guide cavity 51.

[0052] The beads that enter the bottom of the guide cavity 51 flow, along with the flow of liquid in the cylinder 32, into the liquid outlet pipe 37, the third flow control valve 38, the second pipe 33, and the fourth flow control valve 39. The fourth flow control valve 39 is located directly above the center of the rolling plate 73. The beads that flow out of the fourth flow control valve 39 fall to the top of the rolling plate 73 and roll downward along the curved surface. The beads then pass through the first screen bars 74, the second screen bars 75, and the third screen bars 76. The rolling plate 73 where several first screen bars 74 are located is a fine-dividing plate, the rolling plate 73 where several second screen bars 75 are located is a medium-dividing plate, and the rolling plate 73 where several third screen bars 76 are located is a coarse-dividing plate. The fine-dividing plate is located at the center of the rolling plate 73, and the medium-dividing plate is located between the fine-dividing plate and the coarse-dividing plate. There are many microbeads that have just fallen onto the rolling plate 73, and the number of microbeads with a diameter of 0.03-0.1mm is the largest, requiring more screening time. Therefore, the screening distance of the first screen bar 74 needs to be extended, and the ratio of the diameter of the subdividing plate to the width of the medium dividing plate and the width of the coarse dividing plate is 5:3:2, which facilitates the three types of microbeads with diameters of 0.03-0.1mm, 0.1-0.5mm, and 0.5-2mm to pass through the screening holes and enter the first collecting chamber 83, the second collecting chamber 84, and the third collecting chamber 85 respectively. In the process of collecting the microbeads, the microbeads are classified according to their diameter at the same time, saving time for subsequent operations. The liquid that enters the screening cylinder 71 together with the microbeads gathers at the bottom of the liquid collecting cylinder 61 through the liquid outlet 72. The pump body 23 transports the filtered coolant to the liquid storage box 21 through the liquid extraction pipe 24, completing the cycle of coolant cylinder 32-second tube body-liquid collecting cylinder 61-liquid storage box 21-first pipeline 31, and maintaining the amount of coolant inside the cylinder 32.

[0053] The outflow and inflow of the cylinder 32 are precisely controlled and regulated by a number of solenoid valves, and the two are dynamically balanced, so that the solution at the bottom of the cylinder 32 flows slowly to form a smooth liquid channel for carrying away the cooled and formed microbeads. The small-diameter microbeads are isolated in the placement holes 46 by the slowly rotating outer partition cone plate 43 and the matching inner support plate 44, reducing the possibility of small-diameter microbeads adhering to the remaining microbeads, and the microbeads in the placement holes 46 and on the outer partition cone plate 43 are directionally collected by the disappearance of the bottom support. During the transportation process, the microbeads of different particle sizes are separated by gravity. The structure is simple, particle adhesion is reduced, and subsequent processing steps are reduced, thereby improving production efficiency and facilitating large-scale production.

[0054] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. While specific details are described in detail in the preferred embodiments of the present invention to provide a thorough understanding of the present invention, those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A titration molding device for producing zirconium oxide microbeads, characterized in that: include: A titration platform (11) is provided with a cylinder (32) in the middle of the titration platform (11), the cooling liquid in the first pipe (31) flows into the second pipe (33) through the cylinder (32), the liquid level of the first pipe (31) is located above the liquid level of the second pipe (33), the outflow and inflow of the cylinder (32) per unit time are kept balanced, an outer partitioning circular plate (43) is provided in the cylinder (32), a plurality of placement holes (46) are opened through the upper surface of the outer partitioning circular plate (43), the cylinder (32) ) is fixedly connected to the inner wall of the second pipe (33) with an inner support plate (44), the inner support plate (44) is adapted to the outer partitioning cone plate (43), a drop-out opening (55) is provided on the upper surface of the inner support plate (44), the bottom of the drop-out opening (55) is connected to the second pipe (33) through the guide cavity (51), the outer partitioning cone plate (43) is connected to the rotating end of the stepping motor (41) through the rotating shaft (42), and a rolling plate (73) is provided below the discharge port of the second pipe (33), and the rolling plate (73) is used to separate microbeads of different particle sizes.

2. The titration molding device for producing zirconium oxide microbeads according to claim 1, characterized in that: The diameter of the placement hole (46) is 0.03-0.1 mm, the outer spacer frustum plate (43) is a hollow frustum plate, and the angle between the generatrix of the outer spacer frustum plate (43) and the vertical line is 30°-35°.

3. The titration molding device for producing zirconium oxide microbeads according to claim 1, characterized in that: The top of the outer partitioning circular plate (43) is connected to the top plate (45), the inner supporting plate (44) is slidably connected to the outer partitioning circular plate (43), the inner wall of the inner supporting plate (44) is connected to the inclined plate (48), the bottom end of the inclined plate (48) is connected to the end arc plate (49), the inclined plate (48) and the end arc plate (49) constitute a material guide plate, the upper edges of both ends of the material guide plate are connected to the side plates (47), the top of each side plate (47) is connected to the bottom of one end of the inner supporting plate (44), and one side of each side plate (47) is connected to the inner wall of the cylinder (32), and a circular hole (52) is opened on the upper surface of the top end of the inclined plate (48), and the rotating shaft (42) passes through the bottom wall of the cylinder (32), the circular hole (52) in sequence, and is connected to the bottom of the top plate (45).

4. The titration molding device for producing zirconium oxide microbeads according to claim 3, characterized in that: The angle between the inclined plate (48) and the horizontal line is 60-65 degrees. Two side holes (53) are formed through the side surface of the bottom of the cylinder (32). The plane of the end arc plate (49) away from the rotating shaft (42) is smoothly connected to the plane of the bottom of one side hole (53). The guide cavity (51) is arranged between the two side plates (47) and the guide plate. The top of the guide cavity (51) is connected to the blanking port (55), and the bottom of the guide cavity (51) is connected to one side hole (53).

5. The titration molding device for producing zirconium oxide microbeads according to claim 4, characterized in that: The middle of the titration platform (11) is connected to a transverse plate (12), the bottom of the titration platform (11) is connected to a bottom plate (13), the cylinder (32) is placed on the transverse plate (12), the first pipe (31) and the second pipe (33) are arranged on both sides of the titration platform (11), the top of the first pipe (31) is connected to the liquid storage box (21) through a first flow control valve (34), the bottom of the first pipe (31) is connected to a liquid inlet pipe (36) through a second flow control valve (35), the liquid inlet pipe (36) is connected to one of the side holes (53), one end of the other side hole (53) is connected to the guide cavity (51), the other end of the side hole (53) is connected to the second pipe (33) through a third flow control valve (38), and the bottom of the second pipe (33) is connected to a fourth flow control valve (39).

6. The titration molding device for producing zirconium oxide microbeads according to claim 5, characterized in that: The first flow control valve (34), the second flow control valve (35), the third flow control valve (38), and the fourth flow control valve (39) are all electrically connected to the controller via wires. The liquid inlet pipe (36) and the liquid outlet pipe (37) are both installed with flow meters, and the flow meters are used to measure the amount of liquid entering the cylinder (32) and flowing out of the cylinder (32) per unit time. The liquid level difference between the liquid level of the first pipe (31) and the liquid level of the second pipe (33) is 5-10 cm. The liquid flow rate of the second flow control valve (35) and the liquid flow rate of the third flow control valve (38) per unit time maintain dynamic balance. The liquid flow rate of the second flow control valve (35) and the liquid flow rate of the first flow control valve (34) per unit time maintain dynamic balance. The liquid flow rate of the third flow control valve (38) and the liquid flow rate of the fourth flow control valve (39) per unit time maintain dynamic balance.

7. The titration molding device for producing zirconium oxide microbeads according to claim 6, characterized in that: A liquid collecting cylinder (61) is provided directly below the fourth flow control valve (39), and a connecting plate (63) is connected to the inner wall of the liquid collecting cylinder (61). A pumping hole (62) is provided through the side surface of the bottom of the liquid collecting cylinder (61), and the pumping hole (62) is connected to the pump body (23) through the liquid pumping pipe (24). The pump body (23) is connected to the liquid storage box (21) through the liquid discharge pipe (22). A pumping port (64) is provided on the top of the liquid collecting cylinder (61). The bottom is connected to a support plate (67), one end of the support plate (67) is connected to the inner wall of the liquid collecting cylinder (61), the top of the support plate (67) is connected to a positioning bottom strip (66), one side of the connecting plate (63) is connected to a positioning middle strip (65), one side of the positioning bottom strip (66) is connected to the connecting plate (63), the positioning bottom strip (66) is adapted to the positioning middle strip (65), and the positioning bottom strip (66) is composed of a semicircular strip plate and straight plates at both ends of the semicircular strip plate.

8. The titration molding device for producing zirconium oxide microbeads according to claim 7, characterized in that: A screening cylinder (71) is provided on the upper portion of the liquid collecting cylinder (61), the bottom of the screening cylinder (71) is slidably connected to the support plate (67), a plurality of liquid outlet holes (72) are provided through the side of the screening cylinder (71), a rolling plate (73) is provided in the middle portion of the screening cylinder (71), a plurality of first screen bars (74), a plurality of second screen bars (75), and a plurality of third screen bars (76) are provided through the upper surface of the rolling plate (73), the rolling plate (73) where the plurality of first screen bars (74) are located is a subdividing plate, the rolling plate (73) where the plurality of second screen bars (75) are located is a middle dividing plate, and the rolling plate (73) where the plurality of third screen bars (76) are located is a The fine separation plate is located at the center of the rolling separation plate (73), and the middle separation plate is located between the fine separation plate and the coarse separation plate. The ratio of the diameter of the fine separation plate to the width of the middle separation plate and the width of the coarse separation plate is 5:3:

2. The bottom of the edge of the fine separation plate is connected to the bottom wall of the screening cylinder (71) through a first partition plate (81), and the bottom of the edge of the middle separation plate is connected to the bottom wall of the screening cylinder (71) through a second partition plate (82). A first collecting chamber (83) is provided between the first partition plates (81), a second collecting chamber (84) is provided between the first partition plate (81) and the second partition plate (82), and a third collecting chamber (85) is provided between the second partition plate (82) and the inner wall of the screening cylinder (71).

9. The titration molding device for producing zirconium oxide microbeads according to claim 8, characterized in that: The width of the first screen bar (74) is 0.03-0.1 mm, the width of the second screen bar (74) is 0.1-0.5 mm, and the width of the third screen bar (76) is 0.5-2 mm.

10. A method for producing zirconium oxide microbeads, applied to the titration molding device for producing zirconium oxide microbeads according to any one of claims 1 to 9, characterized in that: A communicating vessel is formed by a first pipe (31), a cylinder (32), and a second pipe (33). The liquid level difference between the first pipe (31) and the second pipe (33) is used as the driving force for the flow of the liquid. The speed of the liquid inlet and outlet is jointly adjusted by a first flow control valve (34), a second flow control valve (35), a third flow control valve (38), and a fourth flow control valve (39). The flow rate of the liquid channel in the cylinder (32) is controlled. The microbeads with a diameter of 0.03-0.1 mm formed at the lower part of the cooling liquid are allowed to enter the placement hole (46) by rotating the outer partitioning cone plate (43). The isolated microbeads and the microbeads at the edge of the outer partitioning cone plate (43) fall onto the rolling plate (73) through the guide cavity (51), the liquid outlet pipe (37), and the second pipe (33). The microbeads are separated into different collection cavities according to the screening diameter by the rolling plate (73).

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