Photocatalytic antibacterial coating preparation device

Abstract

The photocatalytic antibacterial coating preparation device comprises a material mixing barrel and a circular support fixedly connected to the bottom end of the interior of the material mixing barrel, the top of the circular support is rotationally connected with an auxiliary stirring mechanism, and a stirring mechanism is fixedly mounted at the top of the material mixing barrel; a plurality of indirect gears are connected between the stirring mechanism and the auxiliary stirring mechanism in a meshed mode and fixedly connected to the top end of the interior of the mixing barrel, a mixing inlet is fixedly communicated with one side of the top end of the mixing barrel, and a premixing device used for mixing raw materials in advance is arranged at the top of the mixing inlet. According to the photocatalytic antibacterial coating preparation device, inert gas is adopted in the device, oxidation reaction of raw materials can be prevented, the stability of the raw materials can be improved, meanwhile, in the solution stirring process, kinetic energy of a stirring motor is used for assisting a stirring mechanism and a stirring mechanism to rotate and stir in an opposite state, the uniformity degree of a solution can be improved, and the stability of the solution is improved. And the effect of the subsequently processed antibacterial coating is better.

Description

Technical Field

[0001] The invention relates to the technical field of preparation of antibacterial coatings, in particular to a device for preparing a photocatalytic antibacterial coating. Background Art

[0002] The main component of the photocatalytic antibacterial coating is a photocatalyst, which has a strong oxidizing ability and can destroy the cell wall, cell membrane, protein and nucleic acid of bacteria, thereby achieving an antibacterial effect. During preparation, the raw materials after grinding need to be evenly mixed with sol, solvent and adhesive, etc. The raw material stirring device of the prior art is driven by a motor, and a paddle-shaped stirring rod is fixedly connected to the output end of the motor. After the raw materials and the mixed solution are placed in the stirring barrel, the motor is started for stirring, thereby obtaining a basis for the subsequent coating to form good performance, and then the next step of processing is carried out. However, the above common preparation device still has shortcomings:

[0003] Although the mixed solution and raw materials can be broken up by traditional paddle stirring, the stirring uniformity is poor and many materials will agglomerate. In this way, many raw materials are not stirred at all, which has a great impact on the subsequent processing steps and will cause the antibacterial coating to be unqualified or the antibacterial effect to be poor. Summary of the invention

[0004] The purpose of the present invention is to provide a device for preparing a photocatalytic antibacterial coating to solve the problem raised in the above background technology that although the mixed solution and raw materials can be broken up by traditional paddle stirring, the stirring uniformity is poor and many materials will agglomerate. In this way, more raw materials do not participate in the stirring at all, which has a great impact on the subsequent processing steps and will cause the produced antibacterial coating to be unqualified or have poor antibacterial effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for preparing a photocatalytic antibacterial coating, comprising a mixing barrel and a circular support fixedly connected to the bottom end of the mixing barrel, the top of the circular support is rotatably connected to an auxiliary stirring mechanism, the top of the mixing barrel is fixedly installed with a stirring mechanism, a plurality of indirect gears are meshedly connected between the stirring mechanism and the auxiliary stirring mechanism, the plurality of indirect gears are all fixedly connected to the top end of the mixing barrel, one side of the top end of the mixing barrel is fixedly connected to a mixing inlet, and the top of the mixing inlet is provided with a pre-mixing device for mixing raw materials in advance.

[0006] Preferably, the auxiliary stirring mechanism includes a cross-shaped support plate and an inner gear ring. The cross-shaped support plate is rotatably connected to the circular support. A plurality of support round rods are fixedly connected to the surface of the cross-shaped support plate. One end of each of the plurality of support round rods is fixedly connected to one side of the inner gear ring. A plurality of auxiliary round rods are fixedly connected to one side of each of the plurality of support round rods. Using the kinetic energy of the stirring motor, the auxiliary stirring mechanism rotates and stirs in a state opposite to that of the stirring mechanism, which is beneficial to improving the uniformity of the solution and making the antibacterial coating processed subsequently have a better effect.

[0007] Preferably, the stirring mechanism includes a stirring bracket. The stirring bracket is fixedly installed in the middle of the top of the mixing barrel. A stirring motor is fixedly installed on the top of the stirring bracket. The output end of the stirring motor is fixedly connected to a cross-shaped connecting plate. A plurality of stirring plates are fixedly connected to the bottom of the cross-shaped connecting plate. An outer gear ring is fixedly connected to the outside of the cross-shaped connecting plate. One side of the outer gear ring is meshed with one side of an intermediate gear. The other side of the inner gear ring is meshed with the other side of the intermediate gear.

[0008] Preferably, a liquid outlet is provided at the bottom end of the mixing barrel, a liquid inlet is opened on one side of the mixing barrel, and a support assembly is provided on the other side of the mixing barrel.

[0009] Preferably, the support assembly includes a mounting support plate. A reinforcing plate is fixedly connected to the connection part between the mounting support plate and the mixing barrel. A clamping groove is opened on the surface of the mounting support plate. Clamping plates are slidably connected to both sides inside the clamping groove. A fastening screw is arranged between the two clamping plates.

[0010] Preferably, the premixing device includes a gas supply mechanism, a detection mechanism and a mixing mechanism. The gas supply mechanism includes a storage gas tank and an air pump. The storage gas tank is arranged between the two clamping plates. One end of the storage gas tank is fixedly communicated with a connecting air pipe. One end of the connecting air pipe is communicated with one side of the air pump. An air delivery pipe is fixedly installed at one end of the air pump.

[0011] Preferably, the mixing mechanism includes a mixing tank. A connecting head is fixedly installed at one end of the mixing tank. One side of the connecting head is communicated with one end of the air delivery pipe. The other end of the connecting head is fixedly communicated with a gas rotary joint. One side of the gas rotary joint is fixedly communicated with a mixing member. A raw material inlet is opened on the surface of the top end of the mixing tank.

[0012] Preferably, the mixing member includes a hollow rotating rod. The hollow rotating rod is rotatably connected to the gas rotary joint and is communicated with the gas rotary joint. A plurality of stirring air pipes are fixedly communicated with the outside of the hollow rotating rod. The upward tilt of the stirring air pipes can also make the raw materials tumble, which is also beneficial to the mixing uniformity.

[0013] Preferably, the detection mechanism includes a pressure gauge and an exhaust valve, and both the pressure gauge and the exhaust valve are fixedly installed on one side of the connection between the raw material inlet and the mixing tank.

[0014] Preferably, one end of the mixing tank is fixedly communicated with a connecting pipe, one end of the connecting pipe is communicated with one end of the mixing material inlet, an inert gas is arranged inside the storage gas tank, and an electromagnetic valve is fixedly installed on the surface of the connecting pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: a pre-mixing device is provided, various raw materials are poured into the interior of the mixing tank, a mixing device is arranged inside the mixing tank, an inert gas is stored inside the storage gas tank, the inert gas is pumped through the connecting head and the gas rotary joint into the interior of the hollow rotating rod by an air pump, a plurality of stirring air pipes are communicated with the surface of the hollow rotating rod, the stirring air pipes are arc-shaped and the tails of all of them are upturned, after the gas is introduced into the hollow rotating rod, the gas will flow out from each stirring air pipe, all the stirring air pipes face one direction, and the caliber of the stirring air pipes is small, so that the hollow rotating rod and the stirring air pipes can be driven to rotate, thus being able to stir the raw materials inside, and the ejected gas can also indirectly stir, making the mixing effect better, the upturned stirring air pipes can also make the raw materials churn, which is also beneficial to the uniformity of mixing, using the inert gas can prevent the oxidation reaction of the raw materials and improve the stability of the raw materials, at the same time, during the process of solution stirring, the kinetic energy of the stirring motor is used to assist the stirring mechanism to rotate in a state opposite to that of the stirring mechanism, which is beneficial to improving the uniformity of the mixing of the photocatalytic material and the solution, and making the effect of the antibacterial coating processed subsequently better. Description of the Drawings

[0016] Figure 1 It is the front view structure diagram of the coating preparation device of the present invention;

[0017] Figure 2 It is the back view structure diagram of the coating preparation device of the present invention;

[0018] Figure 3 It is the internal structure diagram of the mixing barrel of the coating preparation device of the present invention;

[0019] Figure 4 It is the partial enlarged view A of the internal structure diagram of the mixing barrel of the coating preparation device of the present invention;

[0020] Figure 5 It is the structure diagram of the auxiliary stirring device of the coating preparation device of the present invention;

[0021] Figure 6 It is the sectional structure diagram of the pre-mixing device of the coating preparation device of the present invention;

[0022] Figure 7 It is the structure diagram of the mixing assembly of the coating preparation device of the present invention;

[0023] Figure 8 This is a structural diagram of the stirring assembly of the coating preparation device of the present invention.

[0024] In the figure: 1, mixing barrel; 2, circular support; 3, cross-shaped support plate; 4, supporting round rod; 5, auxiliary round rod; 6, internal gear ring; 7, liquid outlet; 8, indirect gear; 9, stirring motor; 10, stirring bracket; 11, cross-shaped connecting plate; 12, stirring plate; 13, external gear ring; 14, mixing inlet; 15, liquid inlet; 16, installation support plate; 17, strengthening plate; 18, clamping groove; 19, clamping plate; 20, fastening screw; 21, storage gas tank; 22, connecting air pipe; 23, air pump; 24, mixing tank; 25, solenoid valve; 26, air supply pipe; 27, pressure gauge; 28, exhaust valve; 29, raw material inlet; 30, connector; 31, gas rotary joint; 32, hollow rotating rod; 33, stirring air pipe. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] Please refer to Figure 1-8 , the present invention provides a photocatalytic antibacterial coating preparation device, including a mixing barrel 1 and a circular support 2 fixedly connected to the bottom end inside the mixing barrel 1. An auxiliary stirring mechanism is rotatably connected to the top of the circular support 2. A stirring mechanism is fixedly installed on the top of the mixing barrel 1. A plurality of indirect gears 8 are meshed and connected between the stirring mechanism and the auxiliary stirring mechanism. A plurality of indirect gears 8 are fixedly connected to the top end inside the mixing barrel 1. One side of the top end of the mixing barrel 1 is fixedly communicated with a mixing inlet 14. A premixing device for premixing raw materials is arranged at the top of the mixing inlet 14.

[0027] Refer to Figure 2-5 , further, the auxiliary stirring mechanism includes a cross-shaped support plate 3 and an internal gear ring 6. The cross-shaped support plate 3 is rotatably connected to the circular support 2. A plurality of supporting round rods 4 are fixedly connected to the surface of the cross-shaped support plate 3. One end of each of the plurality of supporting round rods 4 is fixedly connected to one side of the internal gear ring 6. A plurality of auxiliary round rods 5 are fixedly connected to one side of each of the plurality of supporting round rods 4. The stirring mechanism includes a stirring bracket 10. The stirring bracket 10 is fixedly installed in the middle of the top end of the mixing barrel 1. A stirring motor 9 is fixedly installed on the top of the stirring bracket 10. The output end of the stirring motor 9 is fixedly connected to a cross-shaped connecting plate 11. A plurality of stirring plates 12 are fixedly connected to the bottom of the cross-shaped connecting plate 11. An external gear ring 13 is fixedly connected to the outside of the cross-shaped connecting plate 11. One side of the external gear ring 13 is meshed and connected to one side of the indirect gear 8. One side of the internal gear ring 6 is meshed and connected to the other side of the indirect gear 8;

[0028] When in use, the electronic components of the device are powered by an external power supply and controlled by the device's own controller. When the raw materials and the solution need to be mixed, the solution enters the interior of the mixing barrel 1 from the liquid inlet 15, and the premixed raw materials enter the interior of the mixing barrel 1 from the mixing inlet 14, and the stirring motor 9 is started. At this time, the stirring motor 9 rotates to drive the cross connecting plate 11 to rotate. A stirring plate 12 is fixedly connected to the bottom of the cross connecting plate 11. The rotation of the four stirring plates 12 can make the solution and the raw materials mix better. An external toothed ring 13 is fixedly connected to the outer side of the cross connecting plate 11, and a plurality of indirect gears 8 are fixedly connected to the top of the mixing barrel 1. A circular support 2 is fixedly connected to the bottom of the mixing barrel 1, and a liquid outlet 7 is provided directly below the circular support 2. The circular support 2 will not block the liquid outlet 7. A cross support plate 3 is rotatably connected above the circular support 2. The four corners of the plate 3 are connected with supporting rods 4, and the four supporting rods 4 are commonly connected to an inner toothed ring 6. The indirect gear 8 is between the inner toothed ring 6 and the outer toothed ring 13, and the two sides of the indirect gear 8 are respectively meshed with the inner toothed ring 6 and the outer toothed ring 13. The inner toothed ring 6 is restricted by multiple indirect gears 8, and has good stability during rotation. The power source of the outer toothed ring 13 is a stirring motor 9, which makes the outer toothed ring 13 rotate in one direction, driving multiple indirect gears 8 to rotate in another direction. Multiple indirect gears 8 also drive the inner toothed ring 6 to rotate in the same direction as the indirect gear 8, thereby forming an auxiliary stirring device with an opposite rotation direction to the stirring device, and multiple auxiliary rods 5 are connected to the supporting rods 4 for the same stirring, which is conducive to more uniform stirring, and is conducive to improving the uniformity of mixing the raw materials and the solution, so that the effect of the subsequent antibacterial coating is better.

[0029] See also Figure 6 and Figure 7, Further, a liquid outlet 7 is provided at the bottom end of the mixing barrel 1, a liquid inlet 15 is provided on one side of the mixing barrel 1, and a support assembly is provided on the other side of the mixing barrel 1. The support assembly includes a mounting support plate 16. A reinforcing plate 17 is fixedly connected to the connection between the mounting support plate 16 and the mixing barrel 1. A clamping groove 18 is provided on the surface of the mounting support plate 16. Both sides inside the clamping groove 18 are slidably connected with clamping plates 19. A fastening screw rod 20 is provided between the two clamping plates 19. The premixing device includes a gas supply mechanism, a detection mechanism, and a mixing mechanism. The gas supply mechanism includes a storage gas tank 21 and an air pump 23. The storage gas tank 21 is arranged between the two clamping plates 19. One end of the storage gas tank 21 is fixedly communicated with a connecting air pipe 22. One end of the connecting air pipe 22 is communicated with one side of the air pump 23. One end of the air pump 23 is fixedly installed with a delivery air pipe 26. The mixing mechanism includes a mixing tank 24. One end of the mixing tank 24 is fixedly installed with a connecting head 30. One side of the connecting head 30 is communicated with one end of the delivery air pipe 26. The other end of the connecting head 30 is fixedly communicated with a gas rotary joint 31. One side of the gas rotary joint 31 is fixedly communicated with a mixing member. A raw material inlet 29 is provided on the surface of the top end of the mixing tank 24. The mixing member includes a hollow rotating rod 32. The hollow rotating rod 32 is rotatably connected to the gas rotary joint 31 and is communicated with the gas rotary joint 31. A plurality of stirring air pipes 33 are fixedly communicated with the outside of the hollow rotating rod 32. The detection mechanism includes a pressure gauge 27 and an exhaust valve 28. The pressure gauge 27 and the exhaust valve 28 are both fixedly installed on one side of the connection between the raw material inlet 29 and the mixing tank 24. One end of the mixing tank 24 is fixedly communicated with a joint pipe. One end of the joint pipe is communicated with one end of the mixing material inlet 14. An inert gas is provided inside the storage gas tank 21. An electromagnetic valve 25 is fixedly installed on the surface of the joint pipe;

[0030] During use, various raw materials to be stirred are pre-mixed, which is beneficial to better mixing with the solution during subsequent stirring. Pour various feed materials into the mixing tank 24 through the raw material inlet 29. One end of the mixing tank 24 is connected with a joint pipe, and the joint pipe is connected to the mixing material inlet 14. An electromagnetic valve 25 is installed at the position of the joint pipe, and at this time, the electromagnetic valve 25 is in a closed state. After the raw materials enter the mixing tank 24, start the air pump 23. The air pump 23 extracts gas from the inside of the storage gas tank 21 through the connecting air pipe 22. Inert gas is stored inside the storage gas tank 21. When pre-mixing the raw materials, using inert gas can prevent the oxidation reaction of the raw materials and improve the stability of the raw materials. The air pump 23 flows the gas from the air supply pipe 26 through the connector 30 and the gas rotary joint 31 into the inside of the hollow rotating rod 32. The connector 30 is installed on the top of the mixing tank 24, and the sealing performance at the connection between the connector 30 and the mixing tank 24 is good. One end of the gas rotary joint 31 is connected and rotatably connected to the hollow rotating rod 32. A plurality of stirring air pipes 33 are connected to the outside of the hollow rotating rod 32. The stirring air pipes 33 are arc-shaped and their tails all tilt upwards. After the gas is introduced into the hollow rotating rod 32, the gas will flow out from each stirring air pipe 33. All the stirring air pipes 33 face the same direction, and the caliber of the stirring air pipes 33 is small. Therefore, it will drive the hollow rotating rod 32 and the stirring air pipes 33 to rotate, so as to stir and mix the raw materials inside. The ejected gas can also indirectly mix the raw materials, making the mixing effect better. The upward tilt of the tails of the stirring air pipes 33 can also make the raw materials tumble, which is also beneficial to the uniformity of mixing. A pressure gauge 27 is installed on the mixing tank 24 to detect the pressure inside the mixing tank 24 when using gas to drive the mixing. It can be directly observed through the pressure gauge 27, and an exhaust valve 28 is provided. When the pressure is too high, the exhaust valve 28 can be used to discharge the internal pressure to ensure the safety of use. When using the exhaust valve 28, intermittent exhaust is required, and a little less can be discharged each time to prevent the raw materials inside from leaking out from the connection between the exhaust valve 28 and the mixing tank 24. The storage gas tank 21 is installed on the installation support plate 16. A clamping groove 18 is opened on the installation support plate 16. Clamping plates 19 are installed on both sides inside the clamping groove 18. After placing the storage gas tank 21 on the installation support plate 16, move the clamping plates 19 on both sides to closely adhere to the storage gas tank 21, and then connect the two clamping plates 19 through the fastening screw 20, thereby limiting and fixing the storage gas tank 21. It is also more convenient and fast to replace the gas tank later. Finally, after the mixing is completed, open the electromagnetic valve 25 to enable the mixed raw materials to enter the inside of the mixing barrel 1 through the joint pipe and the mixing material inlet 14 for subsequent processing and use.

[0031] In the use of the embodiments of the present application: Through the coordinated action of components such as the housing, seals, bearings, and guide sleeves, the gas rotary joint 31 realizes the connection, transportation, and rotation of gas between pipelines. When the equipment operates, the rotor connected to the rotating equipment rotates synchronously, while the housing connected to the stationary pipeline remains stationary. Gas enters through the air inlet on the housing and is transmitted to the rotating equipment through the gas passage inside the rotor, realizing the stable transmission of gas between the fixed and rotating components. Driven by inert gas and gas for mixing and stirring, on the one hand, the cost of this device is relatively low, and at the same time, the stability of this device is relatively high, and the maintenance is simple and convenient. On the other hand, the mixing effect is relatively good, and the mixing cost is low. When stirring, an auxiliary stirring device is installed inside the mixing barrel 1, and the kinetic energy of the stirring motor 9 is used to drive the auxiliary stirring device for auxiliary stirring, making full use of energy while increasing the stirring efficiency and the degree of stirring uniformity, making the prepared antibacterial coating effect more remarkable. It should be noted that the present invention is a device for preparing a photocatalytic antibacterial coating, and the components are all common standard parts or parts known to those skilled in the art. Its structure and principle can be known to those skilled in the art through technical manuals or through conventional experimental methods. At the idle place of this device, all the above-mentioned electrical components, which refer to power components, electrical components, and the adapted monitoring computer and power supply, are connected through wires. For the specific connection means, reference should be made to the working principle above to complete the electrical connection according to the sequence of operation of each electrical component. The detailed connection means are well-known techniques in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for preparing a photocatalytic antibacterial coating, comprising a mixing barrel (1) and a circular support (2) fixedly connected to the bottom end inside the mixing barrel (1), characterized in that: The top of the circular support (2) is rotatably connected with an auxiliary stirring mechanism. The top of the mixing barrel (1) is fixedly installed with a stirring mechanism. A plurality of intermediate gears (8) are meshed and connected between the stirring mechanism and the auxiliary stirring mechanism. A plurality of the intermediate gears (8) are fixedly connected to the top end inside the mixing barrel (1). One side of the top end of the mixing barrel (1) is fixedly communicated with a mixing inlet (14). A premixing device for premixing raw materials is arranged at the top of the mixing inlet (14).

2. The preparation device of a photocatalytic antibacterial coating according to claim 1, wherein: The auxiliary stirring mechanism includes a cross-shaped support plate (3) and an internal gear ring (6). The cross-shaped support plate (3) is rotatably connected to the circular support (2). A plurality of support round rods (4) are fixedly connected to the surface of the cross-shaped support plate (3). One end of each of the plurality of support round rods (4) is fixedly connected to one side of the internal gear ring (6). A plurality of auxiliary round rods (5) are fixedly connected to one side of each of the plurality of support round rods (4).

3. The preparation device of a photocatalytic antibacterial coating according to claim 2, characterized in that: The stirring mechanism includes a stirring support (10). The stirring support (10) is fixedly installed in the middle of the top end of the mixing barrel (1). A stirring motor (9) is fixedly installed at the top of the stirring support (10). The output end of the stirring motor (9) is fixedly connected with a cross-shaped connecting plate (11). A plurality of stirring plates (12) are fixedly connected to the bottom of the cross-shaped connecting plate (11). An external gear ring (13) is fixedly connected to the outside of the cross-shaped connecting plate (11). One side of the external gear ring (13) is meshed and connected with one side of the intermediate gear (8). One side of the internal gear ring (6) is meshed and connected with the other side of the intermediate gear (8).

4. A device for preparing a photocatalytic antibacterial coating according to claim 1, characterized in that: A liquid outlet (7) is arranged at the bottom end of the mixing barrel (1). A liquid inlet (15) is arranged on one side of the mixing barrel (1). A support assembly is arranged on the other side of the mixing barrel (1).

5. The preparation device of a photocatalytic antibacterial coating according to claim 4, characterized in that: The support assembly includes a mounting support plate (16). A reinforcing plate (17) is fixedly connected to the connection part of the mounting support plate (16) and the mixing barrel (1). A clamping groove (18) is arranged on the surface of the mounting support plate (16). Clamping plates (19) are slidably connected to both sides inside the clamping groove (18). A fastening screw rod (20) is arranged between the two clamping plates (19).

6. The preparation device of a photocatalytic antibacterial coating according to claim 5, wherein: The premixing device includes a gas supply mechanism, a detection mechanism and a mixing mechanism. The gas supply mechanism includes a storage gas tank (21) and an air pump (23). The storage gas tank (21) is arranged between the two clamping plates (19). One end of the storage gas tank (21) is fixedly communicated with a connecting air pipe (22). One end of the connecting air pipe (22) is communicated with one side of the air pump (23). An air delivery pipe (26) is fixedly installed at one end of the air pump (23).

7. A preparation device for a photocatalytic antibacterial coating according to claim 6, characterized in that: The mixing mechanism includes a mixing tank (24). A connecting head (30) is fixedly installed at one end of the mixing tank (24). One side of the connecting head (30) is communicated with one end of the air delivery pipe (26). The other end of the connecting head (30) is fixedly communicated with a gas rotary joint (31). A mixing part is fixedly communicated with one side of the gas rotary joint (31). A raw material inlet (29) is arranged on the surface of the top end of the mixing tank (24).

8. The preparation device of a photocatalytic antibacterial coating according to claim 7, characterized in that: The mixing member includes a hollow rotating rod (32), the hollow rotating rod (32) is rotatably connected to a gas rotary joint (31), and the hollow rotating rod (32) is in communication with the gas rotary joint (31). A plurality of stirring air pipes (33) are fixedly communicated with the outer side of the hollow rotating rod (32).

9. The preparation device of a photocatalytic antibacterial coating according to claim 7, characterized in that: The detection mechanism includes a pressure gauge (27) and an exhaust valve (28), and both the pressure gauge (27) and the exhaust valve (28) are fixedly installed on one side of the connection between the raw material inlet (29) and the mixing tank (24).

10. The preparation device of a photocatalytic antibacterial coating according to claim 7, characterized in that: One end of the mixing tank (24) is fixedly communicated with a connecting pipe, one end of the connecting pipe is communicated with one end of the mixing material inlet (14), an inert gas is provided inside the storage gas tank (21), and a solenoid valve (25) is fixedly installed on the surface of the connecting pipe.

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