Preparation process of rare earth-doped photocatalyst for catalytic air disinfection

Abstract

The present invention belongs to the field of photocatalyst preparation technology, and in particular discloses a preparation process of a rare earth-doped photocatalyst for catalytic air disinfection, comprising a housing and a cover plate on the top of the housing, a motor being provided at the center of the top surface of the cover plate, a rotating rod being provided on the inner side of the housing, and the top end of the rotating rod being connected to the output end of the motor through the cover plate. In the present invention, when the rotating rotating rod is used to stir the raw materials using a stirring component, when the elastic force of the first spring and the second spring is greater than the centrifugal force of the equidistant slide, the stirring component uses a paddle to stir the raw materials as a whole, so that the raw materials rotate inside the inner ring; when the elastic force of the first spring and the second spring is less than the centrifugal force of the slide, the slide gradually moves away from the rotating rod, at which time the paddle rotates inside the inner ring, and the area of the paddle vertically contacting the raw materials is reduced, and the stirring component with a faster speed quickly mixes and stirs the raw materials, thereby ensuring the mixing effect of the raw materials.

Description

Technical Field

[0001] The invention belongs to the technical field of photocatalyst preparation, and in particular relates to a preparation process of a rare earth doped photocatalyst for catalytic air disinfection. Background Art

[0002] There are various methods for preparing photocatalysts, including but not limited to hydrothermal synthesis, sol-gel, and photodeposition. The sol-gel method involves forming a sol through a chemical reaction in a solution, followed by drying and heat treatment to produce a solid material. When existing stirring equipment is used to stir the raw materials, the liquid raw materials added sequentially will separate into layers within the stirring device, requiring additional time for stirring.

[0003] Therefore, it is necessary to invent a preparation process of a rare earth doped photocatalyst for catalytic air disinfection to solve the above problems. Summary of the Invention

[0004] In view of the above problems, the present invention provides a preparation process of a rare earth-doped photocatalyst for catalytic air disinfection to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a preparation process for a rare earth-doped photocatalyst for catalytic air disinfection, comprising a shell and a cover plate at the top of the shell, a motor is provided at the center of the top surface of the cover plate, a rotating rod is provided on the inner side of the shell, the top end of the rotating rod is connected to the output end of the motor through the cover plate, a feed port is provided on the top of the shell, the prepared raw materials are passed into the inner side of the shell through the feed port, a discharge port is provided at the bottom of the outer circumferential surface of the shell, a stirring component is fixed on the surface of the rotating rod, the rotating rod stirs the prepared raw materials on the inner side of the shell by using the stirring component, a limiting ring is provided at the center of the inner bottom surface of the shell, the bottom end of the rotating rod is correspondingly inserted into the inner side of the limiting ring, a threaded portion is provided at the bottom of the outer circumferential surface of the rotating rod, a ring plate is provided at the bottom of the inner bottom of the shell, the ring plate is spirally sleeved on the surface of the threaded portion of the rotating rod, the limiting ring is provided as a damping block, and the ring plate is sleeved on the surface of the limiting ring, and the top surface of the ring plate corresponds to the discharge port;

[0006] The preparation process comprises the following steps:

[0007] S1. Select butyl titanate and mix it with anhydrous ethanol to obtain liquid A for preparing raw materials;

[0008] S2. Deionized water, anhydrous ethanol, and glacial acetic acid are selected, and cerium nitrate is added to obtain solution B for preparing a raw material;

[0009] S3. Start the motor, and the rotating rod at the output end of the motor rotates inside the housing. Since the limiting ring blocks the ring plate, the rotating rotating rod uses the threaded portion to move the ring plate upward until the ring plate moves to the top of the threaded portion, and the ring plate blocks the discharge port;

[0010] S4, liquid A for preparing the raw material enters the inner side of the shell through the feed port, and liquid B for preparing the raw material is added to the inner side of the shell in stages, and the rotating shaft stirs and mixes liquid A and liquid B through the stirring component to obtain a mixed solution;

[0011] S5. After stirring, the motor output end causes the rotating rod to reverse, and the ring plate is always at the top of the threaded portion due to its own weight. The reverse rotating threaded portion causes the ring plate to move downward until the ring plate can no longer block the discharge port, and the mixed solution is discharged from the discharge port. The mixed solution is collected and allowed to stand to obtain a gel, which is dried and ground to obtain a photocatalyst.

[0012] Furthermore, the stirring component includes two side plates, which are arranged opposite to each other, and the rotating rod is fixedly connected to the inner side surfaces of the side plates through multiple cross rods, and the multiple cross rods are arranged vertically and horizontally in parallel. An inner ring is provided on the inner side of the outer shell, and the outer side surface of the inner ring is fitted with the inner wall of the outer shell. The center of the outer side surface of the side plate is fixedly connected to the inner wall of the inner ring by a connecting rod, and the rotating rotating rod drives the side plates to rotate by multiple cross rods, and the rotating side plates drive the inner ring on the inside of the outer shell, and the multiple cross rods and side plates cooperate to stir the prepared raw materials inside the outer shell.

[0013] Furthermore, multiple crossbar surfaces are slidably sleeved with sliding sleeves, and side plates are fixed on both sides of the outer circumference of the sliding sleeves. Vertical rods are provided on both sides of the crossbars, and the vertical rods vertically penetrate multiple side plates. Circular plates are fixed to the top and bottom ends of the vertical rods, and the bottom surface of the top circular plate fits with the top surface of the top side plate, and the top surface of the bottom circular plate fits with the bottom surface of the bottom side plate. Both vertical rods use multiple side plates to allow multiple sliding sleeves to be vertically arranged in parallel. Under the limitation of the vertical rods and the side plates, multiple sliding sleeves are combined into a slide.

[0014] Furthermore, a first spring is sleeved on the surface of the cross bar, the outer end of the first spring is connected to the inner side of the side plate, the inner end of the first spring is connected to the outer side of the sliding sleeve, and a nut is spirally sleeved on the surface of the cross bar. The elastic force of the first spring makes the inner side of the sliding sleeve fit with the outer side of the nut.

[0015] Furthermore, the top and bottom of the rotating rod are respectively sleeved with a top ring and a bottom ring, the top of the rotating rod is sleeved with an elastic member, the top of the elastic member is connected to the bottom surface of the cover plate, and the bottom end of the elastic member is connected to the top surface of the top ring, and a first rotating plate is provided on both sides of the bottom of the top ring, the top of the first rotating plate is hinged to the top ring, and the bottom end of the first rotating plate is hinged to the sliding sleeve at the top of the slide, and a second rotating plate is provided on both sides of the top of the bottom ring, the bottom end of the second rotating plate is hinged to the bottom ring, and the top end of the second rotating plate is hinged to the sliding sleeve at the bottom of the slide.

[0016] Furthermore, a shift plate is fixed on the surface of the two vertical rods, the shift plate is arranged vertically, and a clamping rod is vertically passed through the outer end of the shift plate. Gears are fixed on the top and bottom ends of the clamping rod. Internal tooth grooves are provided on the top and bottom of the inner side wall of the inner ring, and the two gears correspond to the two internal tooth grooves one by one.

[0017] Furthermore, the two vertical rods of the slide are arranged opposite to each other, the two shift plates are arranged opposite to each other, and an arc rod is arranged between the two opposite shift plates. The arc rod passes through the centers of the two shift plates respectively, and a second spring is sleeved on the surface of the arc rod, and the second spring is in a stretched state.

[0018] Furthermore, the elastic force of the second spring acts on the shift plate, so that the gear on the shift plate corresponds to the inner tooth groove of the inner ring, and the gear meshes with the inner tooth groove.

[0019] The technical effects and advantages of the present invention are as follows:

[0020] 1. When the present invention uses a stirring component to stir the prepared raw materials through the rotating rotating rod, when the elastic force of the first spring and the second spring is greater than the centrifugal force of the equidistant slide, the stirring component uses the paddle to stir the prepared raw materials as a whole, so that the prepared raw materials rotate inside the inner ring; when the elastic force of the first spring and the second spring is less than the centrifugal force of the slide, the slide gradually moves away from the rotating rod. At this time, the paddle rotates inside the inner ring, and the area of the paddle vertically contacting the prepared raw materials is reduced. The stirring component with a faster speed quickly mixes and stirs the prepared raw materials, thereby ensuring the mixing effect of the prepared raw materials.

[0021] 2. When the slide is rotated by the cross bar on the rotating rod of the present invention, the centrifugal force generated by the rotation of the slide causes the first rotating plate to rotate. The rotating first rotating plate pulls the cover plate through the elastic member at the top of the top ring, thereby improving the fastening effect of the cover plate on the top of the shell.

[0022] 3. The present invention absorbs the centrifugal force of the slide during rotation through the elastic force of the first spring and the second spring, thereby preventing the slide from directly impacting the side plate and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is an overall schematic diagram of a device for preparing a rare earth-doped photocatalyst for catalytic air disinfection according to an embodiment of the present invention;

[0024] Figure 2 is a schematic perspective view of a cross-section of a housing according to an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of the inner components of the housing according to an embodiment of the present invention;

[0026] Figure 4 Schematic diagram of the inner side component of the inner ring according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the relative coordination of two dial plates according to an embodiment of the present invention;

[0028] In the figure: 1. outer shell; 2. cover plate; 3. motor; 4. rotating rod; 5. feed port; 6. discharge port; 7. limiting ring; 8. threaded portion; 9. ring plate; 10. side plate; 11. cross bar; 12. inner ring; 13. connecting rod; 14. sliding sleeve; 15. side plate; 16. vertical rod; 17. first spring; 18. nut; 19. top ring; 20. bottom ring; 21. elastic member; 22. first rotating plate; 23. second rotating plate; 24. dial plate; 25. clamping rod; 26. gear; 27. inner tooth groove; 28. arc rod; 29. second spring. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0030] The present invention provides a preparation process of a rare earth doped photocatalyst for catalytic air disinfection, such as Figures 1 to 3 As shown, it includes an outer shell 1 and a cover plate 2 at the top of the outer shell 1, a motor 3 is provided at the center of the top surface of the cover plate 2, a rotating rod 4 is provided on the inner side of the outer shell 1, and the top end of the rotating rod 4 is connected to the output end of the motor 3 through the cover plate 2, a feeding port 5 is provided on the top of the outer shell 1, and the prepared raw materials are introduced into the inner side of the outer shell 1 through the feeding port 5, and a discharge port 6 is provided at the bottom of the outer circumferential surface of the outer shell 1, a stirring component is fixed on the surface of the rotating rod 4, and the rotating rod 4 stirs the prepared raw materials on the inner side of the outer shell 1 with the stirring component, a limiting ring 7 is provided at the center of the inner bottom surface of the outer shell 1, and the bottom end of the rotating rod 4 is correspondingly inserted into the inner side of the limiting ring 7, a threaded portion 8 is provided at the bottom of the outer circumferential surface of the rotating rod 4, a ring plate 9 is provided at the inner bottom of the outer shell 1, and the ring plate 9 is spirally sleeved on the surface of the threaded portion 8 of the rotating rod 4, the limiting ring 7 is set as a damping block, and the ring plate 9 is sleeved on the surface of the limiting ring 7, and the top surface of the ring plate 9 corresponds to the discharge port 6. When the rotating rod 4 rotates, since the limiting ring 7 is set as a damping block, the limiting ring 7 prevents the ring plate 9 from rotating directly with the rotating rod 4. The rotating rotating rod 4 rotates at the center of the ring plate 9 using the threaded portion 8. The spiral cooperation between the rotating rotating rod 4 and the threaded portion 8 causes the ring plate 9 to move upward. The upward moving ring plate 9 gradually blocks the discharge port 6 until the ring plate 9 is completely moved to the top of the threaded portion 8. At this time, the ring plate 9 blocks the discharge port 6, and the ring plate 9 is always sleeved on the surface of the limiting ring 7.

[0031] After the ring plate 9 moves to the top of the threaded portion 8, the prepared raw materials are poured into the inner side of the shell 1 through the feed port 5. At this time, the prepared raw materials are accumulated on the top of the ring plate 9, and the rotating rod 4 continues to rotate. The rotating rotating rod 4 uses the stirring component to stir the prepared raw materials.

[0032] The preparation process comprises the following steps:

[0033] S1. Select butyl titanate and mix it with anhydrous ethanol to obtain liquid A for preparing raw materials.

[0034] S2. Deionized water, anhydrous ethanol, and glacial acetic acid are selected, and cerium nitrate is added to obtain liquid B for preparing raw materials.

[0035] S3. Start the motor 3. The rotating rod 4 at the output end of the motor 3 rotates inside the housing 1. Since the limiting ring 7 blocks the ring plate 9, the rotating rotating rod 4 uses the threaded portion 8 to move the ring plate 9 upward until the ring plate 9 moves to the top of the threaded portion 8, and the ring plate 9 blocks the discharge port 6.

[0036] S4. Liquid A for preparing the raw material enters the inner side of the shell 1 through the feed port 5, and liquid B for preparing the raw material is added to the inner side of the shell 1 in stages. The rotating shaft 4 stirs and mixes liquid A and liquid B through the stirring component to obtain a mixed solution.

[0037] S5. After stirring, the output end of the motor 3 causes the rotating rod 4 to reverse, and the ring plate 9 is always at the top of the threaded portion 8 due to its own weight. The reversely rotating threaded portion 8 causes the ring plate 9 to move downward until the ring plate 9 can no longer block the discharge port 6, and the mixed solution is discharged from the discharge port 6. The mixed solution is collected and allowed to stand to obtain a gel. The gel is dried and the dried product is ground to obtain a photocatalyst.

[0038] exist Figures 2 to 4 In the embodiment, the stirring component includes two side plates 10, the two side plates 10 are arranged opposite to each other, the rotating rod 4 is fixedly connected to the inner side of the side plates 10 by a plurality of cross bars 11, and the plurality of cross bars 11 are arranged vertically and horizontally in parallel. An inner ring 12 is provided on the inner side of the shell 1, and the outer side surface of the inner ring 12 is fitted with the inner wall of the shell 1. The center of the outer side surface of the side plate 10 is fixedly connected to the inner wall of the inner ring 12 by a connecting rod 13. The rotating rotating rod 4 drives the side plates 10 to rotate by using a plurality of cross bars 11. The rotating side plates 10 drive the inner ring 12 on the inner side of the shell 1, and the plurality of cross bars 11 are arranged vertically and horizontally in parallel. Cooperate with the side plate 10 to stir the prepared raw materials inside the outer shell 1. Since the ring plate 9 blocks the bottom opening of the inner ring 12, the prepared raw materials inside the inner ring 12 are prevented from falling out. After the mixed solution is stirred, the inner ring 12 and the stirring component carrying the mixed solution are pulled out from the inside of the outer shell 1 through the cover plate 2, and the inner ring 12 and the stirring component are directly cleaned to avoid a large amount of mixed solution remaining on the inside of the outer shell 1. At the same time, the inner wall of the outer shell 1 and the ring plate 9 are rinsed, and the water after rinsing is discharged through the discharge port 6 to prevent the mixed solution from corroding the inner wall of the outer shell 1.

[0039] exist Figures 2 to 4In the embodiment, multiple crossbars 11 are slidably sleeved with sleeves 14 on their surfaces, and side plates 15 are fixed on both sides of the outer circumference of the sleeves 14. Vertical rods 16 are provided on both sides of the crossbar 11, and the vertical rods 16 vertically penetrate the multiple side plates 15. Circular plates are fixed to the top and bottom ends of the vertical rods 16. The bottom surface of the top circular plate is in contact with the top surface of the top side plate 15, and the top surface of the bottom circular plate is in contact with the bottom surface of the bottom side plate 15. Both vertical rods 16 use the multiple side plates 15 to allow the multiple sleeves 14 to be arranged vertically and side by side. Under the constraints of the vertical rods 16 and side plates 15, the multiple sleeves 14 cooperate to form a slide. A first spring 17 is sleeved on the surface of the crossbar 11. The outer end of the first spring 17 is connected to the inner surface of the side plate 10, and the inner end of the first spring 17 is connected to the outer surface of the sleeve 14. A nut 18 is spirally sleeved on the surface of the crossbar 11. The elastic force of the first spring 17 causes the inner surface of the sleeve 14 to be in contact with the outer surface of the nut 18. When the rotating rod 4 uses the cross rod 11 to drive the side plate 10 to rotate, multiple cross rods 11 use multiple sleeves 14 to drive the slide to rotate centrifugally on the inner side of the inner ring 12. The centrifugal force generated by the rotation causes the slide to slide on the surface of the cross rod 11. The moving slide gradually moves away from the rotating rod 4 and gradually approaches the side plate 10. The sleeve 14 on the slide cooperates with the side plate 10 to squeeze the first spring 17 on the surface of the cross rod 11. The elastic force of the first spring 17 is limited to prevent the slide from directly impacting the inner surface of the side plate 10.

[0040] When the carriage moves, the two vertical rods 16 utilize multiple side plates 15 to keep the multiple sleeves 14 vertically aligned, preventing the sleeves 14 from shifting or rotating. As the rotation speed of the rotating rod 4 gradually decreases, the elastic force of the first spring 17 becomes greater than the centrifugal force of the carriage, and the elastic force of the first spring 17 pushes the carriage toward the rotating rod 4 until the inner surface of the sleeve 14 abuts the outer surface of the nut 18.

[0041] exist Figures 2 to 4In the figure, the top and bottom of the rotating rod 4 are respectively sleeved with a top ring 19 and a bottom ring 20, and the top of the rotating rod 4 is sleeved with an elastic member 21, the top of the elastic member 21 is connected to the bottom surface of the cover plate 2, and the bottom end of the elastic member 21 is connected to the top surface of the top ring 19, and a first rotating plate 22 is provided on both sides of the bottom of the top ring 19. The top of the first rotating plate 22 is hinged to the top ring 19, and the bottom end of the first rotating plate 22 is hinged to the sliding sleeve 14 at the top of the slide, and a second rotating plate 23 is provided on both sides of the top of the bottom ring 20, the bottom end of the second rotating plate 23 is hinged to the bottom ring 20, and the top of the second rotating plate 23 is hinged to the sliding sleeve 14 at the bottom of the slide. When the centrifugal force generated by the rotation causes the carriage to move away from the rotating rod 4, the sliding sleeves 14 at the top and bottom of the carriage respectively drive the bottom end of the first rotating plate 22 and the top end of the second rotating plate 23 to move. At this time, the first rotating plate 22 and the second rotating plate 23 rotate. The rotating first rotating plate 22 pulls the cover plate 2 via the elastic member 21 at the top of the top ring 19, improving the tightness of the cover plate 2 placed on the top of the housing 1. During the stirring process of the rotating rod 4 using the stirring member to prepare the raw materials, the cover plate 2 is ensured to effectively seal the top opening of the housing 1. The rotation of the second rotating plate 23 causes the bottom ring 20 to move upward on the surface of the rotating rod 4. The bottom ring 20 and the second rotating plate 23 define the bottom of the carriage, ensuring the balance between the top and bottom of the carriage.

[0042] exist Figures 2 to 5 In the embodiment, two vertical rods 16 are fixed with shift plates 24 on their surfaces. The shift plates 24 are arranged vertically, and a clamping rod 25 extends vertically through the outer ends of the shift plates 24. Gears 26 are fixed to the top and bottom ends of the clamping rod 25. Internal tooth grooves 27 are provided at the top and bottom of the inner sidewall of the inner ring 12, and the two gears 26 correspond one-to-one with the two internal tooth grooves 27. The two vertical rods 16 of the slide are arranged opposite each other, and the two shift plates 24 are arranged opposite each other. An arcuate rod 28 is provided between the two opposing shift plates 24, and the arcuate rod 28 extends through the centers of the two shift plates 24. A second spring 29 is sleeved on the surface of the arcuate rod 28, and the second spring 29 is in a stretched state. The elastic force of the second spring 29 acts on the paddle plate 24, so that the gear 26 on the paddle plate 24 corresponds to the inner tooth groove 27 of the inner ring 12, and the gear 26 meshes with the inner tooth groove 27. When the slide approaches the side plate 10 due to the centrifugal force of rotation, the slide drives the inner end of the paddle plate 24 to move through the vertical rod 16 on the side plate 15, and the outer end of the paddle plate 24 meshes with the inner tooth groove 27 of the inner ring 12 through the gear 26. The outer end of the paddle plate 24 rolls on the surface of the inner tooth groove 27 using the gear 26. At this time, the two opposing shift plates 24 rotate toward each other on the inner side of the inner ring 12, and the rotating shift plates 24 slide on the surface of the arc-shaped rod 28. In the process of rotating toward each other, the two shift plates 24 pull the second spring 29 on the surface of the arc-shaped rod 28. The elastic force of the second spring 29 makes the gear 26 at the outer end of the shift plate 24 always mesh with the surface of the inner tooth groove 27, and the elastic force of the second spring 29 further offsets the centrifugal force of the slide, thereby preventing the slide from directly driving the arc-shaped rod 28 to impact the inner surface of the side plate 10.

[0043] When the rotating rotating rod 4 uses the stirring component to stir the prepared raw materials, when the elastic force of the first spring 17 and the second spring 29 is greater than the centrifugal force of the equidistant slide, the stirring component uses the paddle 24 to stir the prepared raw materials as a whole, so that the prepared raw materials rotate inside the inner ring 12; when the elastic force of the first spring 17 and the second spring 29 is less than the centrifugal force of the slide, the slide gradually moves away from the rotating rod 4. At this time, the paddle 24 rotates inside the inner ring 12, and the area of the paddle 24 vertically contacting the prepared raw materials is reduced, and the stirring component with a faster speed quickly mixes and stirs the prepared raw materials.

[0044] By turning the nut 18, the screw engagement between the nut 18 and the crossbar 11 facilitates adjustment of the relative distance between the slide and the rotating rod 4, limited by the elastic force of the first spring 17. When the nut 18 is turned, the elastic force of the first spring 17 causes the slide to approach the rotating rod 4. At this time, the sliding sleeve 14 at the top of the slide pushes the top ring 19 upward using the first rotating plate 22, and the inner end of the working paddle 24 of the sliding sleeve 14 approaches the rotating rod 4. At this time, the area of the paddle 24 vertically contacting the prepared raw materials is increased, ensuring the overall stirring effect of the prepared raw materials inside the inner ring 12.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A process for preparing a rare earth-doped photocatalyst for catalytic air disinfection, comprising a housing (1), and a cover plate (2) located on the top of the housing (1), a motor (3) being provided at the center of the top surface of the cover plate (2), a rotating rod (4) being provided inside the housing (1), and the top end of the rotating rod (4) being connected to the output end of the motor (3) through the cover plate (2), characterized in that: The top of the shell (1) is provided with a feed port (5), and the prepared raw materials are introduced into the inner side of the shell (1) through the feed port (5). The bottom of the outer circumferential side of the shell (1) is provided with a discharge port (6). A stirring component is fixed on the surface of the rotating rod (4), and the rotating rod (4) stirs the prepared raw materials on the inner side of the shell (1) by using the stirring component. A limiting ring (7) is provided at the center of the inner bottom surface of the shell (1), and the bottom end of the rotating rod (4) is correspondingly inserted into the inner side of the limiting ring (7). A threaded portion (8) is provided at the bottom of the outer circumferential side of the rotating rod (4). A ring plate (9) is provided at the inner bottom of the shell (1), and the ring plate (9) is spirally sleeved on the surface of the threaded portion (8) of the rotating rod (4). The limiting ring (7) is provided as a damping block, and the ring plate (9) is sleeved on the surface of the limiting ring (7). The top surface of the ring plate (9) corresponds to the discharge port (6). The preparation process includes the following steps: S1. Select butyl titanate and mix it with anhydrous ethanol to obtain liquid A for preparing raw materials; S2. Deionized water, anhydrous ethanol, and glacial acetic acid are selected, and cerium nitrate is added to obtain solution B for preparing a raw material; S3, starting the motor (3), the rotating rod (4) at the output end of the motor (3) rotates inside the housing (1), and since the limiting ring (7) blocks the ring plate (9), the rotating rotating rod (4) uses the threaded portion (8) to move the ring plate (9) upward until the ring plate (9) moves to the top of the threaded portion (8), and the ring plate (9) blocks the discharge port (6); S4, liquid A for preparing the raw material is introduced into the inner side of the housing (1) through the feed port (5), and liquid B for preparing the raw material is added into the inner side of the housing (1) in stages, and the rotating rod (4) stirs and mixes liquid A and liquid B through the stirring component to obtain a mixed solution; S5. After stirring, the output end of the motor (3) causes the rotating rod (4) to reverse, and the ring plate (9) is always at the top of the threaded portion (8) due to its own weight. The threaded portion (8) rotates in the opposite direction and causes the ring plate (9) to move downward until the ring plate (9) cannot block the discharge port (6), and the mixed solution is discharged from the discharge port (6). The mixed solution is collected and allowed to stand to obtain a gel, the gel is dried, and the dried product is ground to obtain a photocatalyst. The stirring component comprises two side plates (10), the two side plates (10) are arranged opposite to each other, a rotating rod (4) is fixedly connected to the inner side surface of the side plates (10) through a plurality of cross bars (11), the plurality of cross bars (11) are arranged vertically and horizontally in parallel, an inner ring (12) is arranged on the inner side of the outer shell (1), the outer side surface of the inner ring (12) is in contact with the inner side wall of the outer shell (1), the center of the outer side surface of the side plate (10) is fixedly connected to the inner side wall of the inner ring (12) by a connecting rod (13), the rotating rotating rod (4) drives the side plates (10) to rotate by using the plurality of cross bars (11), the rotating side plates (10) drive the inner ring (12) inside the outer shell (1), and the plurality of cross bars (11) cooperate with the side plates (10) to stir the prepared raw materials inside the outer shell (1); The surfaces of the plurality of cross bars (11) are all slidably sleeved with sliding sleeves (14), and side plates (15) are fixed on both sides of the circumferential outer side surfaces of the sliding sleeves (14). Vertical bars (16) are provided on both sides of the cross bars (11), and the vertical bars (16) vertically penetrate the plurality of side plates (15). Circular plates are fixed on the top and bottom ends of the vertical bars (16), and the bottom surface of the top circular plate fits with the top surface of the top side plate (15), and the top surface of the bottom circular plate fits with the bottom surface of the bottom side plate (15). The two vertical bars (16) both utilize the plurality of side plates (15) to enable the plurality of sliding sleeves (14) to be arranged vertically in parallel. Under the limitation of the vertical bars (16) and the side plates (15), the plurality of sliding sleeves (14) cooperate and combine to form a slide frame; A first spring (17) is sleeved on the surface of the crossbar (11), the outer end of the first spring (17) is connected to the inner side of the side plate (10), and the inner end of the first spring (17) is connected to the outer side of the sliding sleeve (14); The top and bottom of the rotating rod (4) are respectively sleeved with a top ring (19) and a bottom ring (20); the top of the rotating rod (4) is sleeved with an elastic member (21); the top of the elastic member (21) is connected to the bottom surface of the cover plate (2); the bottom of the elastic member (21) is connected to the top surface of the top ring (19); first rotating plates (22) are provided on both sides of the bottom of the top ring (19); the top of the first rotating plate (22) is hinged to the top ring (19); the bottom of the first rotating plate (22) is hinged to the sliding sleeve (14) at the top of the slide; second rotating plates (23) are provided on both sides of the top of the bottom ring (20); the bottom of the second rotating plate (23) is hinged to the bottom ring (20); the top of the second rotating plate (23) is hinged to the sliding sleeve (14) at the bottom of the slide; After the mixed solution is stirred, the inner ring (12) and the stirring component carrying the mixed solution are pulled out from the inner side of the outer shell (1) through the cover plate (2), and the inner ring (12) and the stirring component are directly cleaned; During the stirring of the mixed solution, the centrifugal force generated by the rotation causes the slide to move away from the rotating rod (4), and the sliding sleeve (14) at the top and bottom of the slide respectively drives the bottom end of the first rotating plate (22) and the top end of the second rotating plate (23) to move, so that the first rotating plate (22) and the second rotating plate (23) rotate, and the rotating first rotating plate (22) pulls the cover plate (2) through the elastic member (21) at the top end of the top ring (19), thereby improving the fastening effect of the cover plate (2) covering the top of the housing (1); A shift plate (24) is fixed on the surface of the two vertical rods (16), the shift plate (24) is vertically arranged, a clamping rod (25) is vertically passed through the outer end of the shift plate (24), a gear (26) is fixed on the top and bottom ends of the clamping rod (25), and an inner tooth groove (27) is provided on the top and bottom of the inner side wall of the inner ring (12), and the two gears (26) correspond to the two inner tooth grooves (27) one by one; When the elastic force of the first spring (17) and the second spring (29) is greater than the centrifugal force of the equidistant slide, the stirring member stirs the prepared raw material as a whole using the paddle (24), so that the prepared raw material rotates inside the inner ring (12); When the elastic force of the first spring (17) and the second spring (29) is less than the centrifugal force of the slide, the slide gradually moves away from the rotating rod (4), the paddle (24) rotates inside the inner ring (12), and the area of the paddle (24) vertically contacting the prepared raw materials decreases, and the stirring component quickly mixes and stirs the prepared raw materials.

2. The process for preparing a rare earth-doped photocatalyst for catalytic air disinfection according to claim 1, characterized in that: The surface of the crossbar (11) is spirally sleeved with a nut (18), and the elastic force of the first spring (17) causes the inner side surface of the sliding sleeve (14) to fit with the outer side surface of the nut (18).

3. The process for preparing a rare earth-doped photocatalyst for catalytic air disinfection according to claim 1, characterized in that: The two vertical rods (16) of the slide are arranged opposite to each other, and the two shifting plates (24) are arranged opposite to each other. An arc rod (28) is arranged between the two opposite shifting plates (24). The arc rod (28) passes through the centers of the two shifting plates (24) respectively. A second spring (29) is sleeved on the surface of the arc rod (28), and the second spring (29) is in a stretched state.

4. The process for preparing a rare earth-doped photocatalyst for catalytic air disinfection according to claim 3, characterized in that: The elastic force of the second spring (29) acts on the shift plate (24), so that the gear (26) on the shift plate (24) corresponds to the inner tooth groove (27) of the inner ring (12), and the gear (26) is meshed with the inner tooth groove (27).

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