Liquid material mixing device and method for preparing distillation substrate based thereon

Abstract

The present invention discloses a liquid-material mixing device and a preparation method of a substrate for distillation based thereon, wherein the liquid-material mixing device comprises: a mixing tank, a cover is fixedly installed on the upper part; a stirring mechanism, comprising a stirring tube rotatably installed on the lower side of the cover, and a corresponding stirring blade is fixedly installed on the stirring tube; a material circulation mechanism, comprising an arc-shaped feed plate fixedly connected to the upper side of the stirring tube at intervals, and an arc-shaped discharge pipe connected to the bottom of the stirring tube at intervals; a vibration dispersion mechanism, comprising a connecting tube fixedly connected to the middle part of the cover, the bottom of the connecting tube is connected downwardly with a corresponding ultrasonic transducer through a bellows, and an airbag arranged in a ring shape is fixedly installed on the upper part of the ultrasonic transducer, and the outer diameter of the airbag is smaller than the inner diameter of the stirring tube. The present invention can effectively and fully form sufficient stirring and mixing and ultrasonic dispersion of the material, thereby effectively improving the wear resistance and roughness of the coating after being applied to the substrate.

Description

Technical Field

[0001] The present invention relates to a liquid material mixing device and a method for preparing a distillation substrate based thereon. The liquid material mixing device is used to prepare a corresponding coating liquid, and the coating liquid prepared by the liquid material mixing device is used for the production and preparation of the distillation substrate. Background Art

[0002] Super hydrophobic surface can make water droplets roll down smoothly and prevent water droplets from adhering. For example, in order to improve the collection efficiency and collection effect of distillate, it is necessary to coat the surface of the distillation substrate with super hydrophobic surface. In the past two decades, super hydrophobic has gradually become one of the research hotspots in the field of surface treatment technology. The existing super hydrophobic theoretical research results show that the preparation of super hydrophobic surface needs to start from two aspects, namely reducing the solid surface energy and increasing the solid surface roughness. Among them, the technology of reducing the solid surface energy is relatively mature, and the methods are roughly the same, or using materials with low surface energy themselves, or coating low surface energy substances on high surface energy solid surfaces. Fluorosilane is widely used for low surface energy treatment of inorganic materials because of its extremely low surface energy of fluorocarbon chain in the structure, good chemical stability, and Si-OH bond generated by hydrolysis of Si-OR group is easy to combine with inorganic surface. However, the maximum water contact angle that can be obtained by low surface energy treatment of flat surface is about 120°, which is much lower than the super hydrophobic contact angle of 150°. If you want to further increase the water contact angle, you must increase the surface roughness. In order to increase the surface roughness of a solid, a concave-convex structure needs to be prepared on the solid surface. Currently, the difficulty in preparing a super-hydrophobic surface lies in preparing a wear-resistant micro-nano concave-convex structure.

[0003] The methods used to prepare the concave-convex structure in the prior art mainly include laser etching, plasma etching, chemical etching, electrochemical etching, chemical vapor deposition, electrochemical deposition, sol-gel method, hydrothermal method, electrostatic spinning, particle method, template method and microphase separation method. Among them, laser etching, plasma etching, chemical etching, electrochemical etching, sol-gel method, template method and microphase separation method mainly focus on preparing pits, while chemical vapor deposition, electrochemical deposition, hydrothermal method, electrostatic spinning and particle method focus on preparing protrusions. For safety glass, etching on its surface to form pits is like making microcracks, which will inevitably reduce its mechanical properties. Therefore, the best method for preparing super hydrophobic glass is to prepare a coating with a concave-convex structure on its surface.

[0004] The particle method of preparing a coating liquid with a concave-convex structure by adding nanoparticles to the coating and bonding the nanoparticles with organic or inorganic adhesive materials is simple and low-cost, and is often used to prepare a coating with a concave-convex structure. In the existing particle method technology for preparing a coating with a concave-convex structure, conventional stirring equipment plus an ultrasonic vibrator are mainly used to mix and stir the component materials and ultrasonically disperse them. In order to prevent the stirring mechanism of the stirring device from interfering with the setting of the ultrasonic vibrator, the ultrasonic vibrator can generally only be set in the area where the stirring mechanism is not set. The dispersion effect of the material in the area close to the ultrasonic vibrator can basically meet the design requirements, but the dispersion effect of the material far away from the ultrasonic vibrator generally does not meet the design requirements, resulting in the prepared coating liquid often having the disadvantages of insufficient roughness or poor wear resistance after being applied to the substrate.

[0005] Therefore, the purpose of the present invention is to design a liquid-material mixing device and a method for preparing a distillation substrate based on the device, which can effectively and fully stir, mix and ultrasonically disperse the raw materials used in preparing the coating liquid, thereby effectively improving the wear resistance and roughness of the coating after being coated on the substrate. Summary of the invention

[0006] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a liquid-material mixing device and a method for preparing a distillation substrate based thereon, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0007] The technical solution of the present invention is:

[0008] A liquid material mixing device, comprising:

[0009] A mixing tank, with a corresponding cover fixedly mounted on the upper part, a feed pipe arranged on the cover, and a corresponding discharge pipe arranged at the bottom of the mixing tank;

[0010] A stirring mechanism, comprising a stirring tube rotatably mounted on the lower side of the cover, on which corresponding stirring blades are fixedly mounted, and the stirring tube is driven by a corresponding driving motor;

[0011] The material circulation mechanism comprises an arc-shaped feed plate fixedly connected to the upper side of the stirring tube at intervals, and an arc-shaped discharge pipe connected to the bottom of the stirring tube at intervals, and the bottom of the stirring tube is sealed and installed with a corresponding sealing plate; the opening of the arc-shaped feed plate faces the rotation direction of the stirring tube, and the stirring tube is respectively provided with corresponding feed ports at positions corresponding to the arc-shaped feed plate; the opening of the arc-shaped discharge pipe faces the opposite direction of the rotation direction of the stirring tube;

[0012] The vibration dispersion mechanism comprises a connecting tube fixedly connected to the middle part of the sealing cover, the bottom of the connecting tube is downwardly connected to a corresponding ultrasonic transducer through a bellows, an air bag arranged in a ring shape is fixedly installed on the upper part of the ultrasonic transducer, the outer diameter of the air bag is smaller than the inner diameter of the stirring tube, and the ultrasonic transducer is connected to an external ultrasonic generator; the stirring tube rotates to drive the stirring blades to mix and stir the materials in the mixing tank, and the materials located at the upper part of the mixing tank enter the stirring tube under the blocking and pushing of the arc-shaped feed plate, and the materials entering the stirring tube are fully contacted with the ultrasonic transducer movably located in the stirring tube. After being fully dispersed under ultrasonic vibration, they are thrown out along the arc-shaped discharge pipe at the bottom of the stirring tube under the action of centrifugal force and inertial force.

[0013] The mixing tank is supported and installed by corresponding supporting legs, a corresponding cover plate is installed on the feed pipe in an openable and closable manner, and a corresponding discharge valve is fixedly installed on the discharge pipe.

[0014] A corresponding mounting tube is fixedly connected downwardly to the bottom side of the cover at a position corresponding to the stirring tube, and the stirring tube is rotatably sleeved on the mounting tube through a corresponding bearing.

[0015] The stirring tube is connected to the output shaft end of the driving motor through a gear meshing transmission mode.

[0016] The cross section of the airbag is arranged in a circular shape or an elliptical shape.

[0017] A method for preparing a distillation substrate based on the liquid-material mixing device described above comprises the following specific steps:

[0018] S1, weighing a hydrolyzable silane compound, monodisperse nano-silicon oxide and a solvent miscible with water, adding the materials to the liquid-material mixing device, and uniformly mixing the materials by ultrasonic dispersion and stirring to obtain a mixed solution A;

[0019] S2, adding deionized water and a catalyst to the mixed solution A, and performing ultrasonic dispersion and stirring again to obtain a mixed solution B containing monodisperse nano-silicon oxide particles in situ encapsulated by a hydrolyzed condensate of a hydrolyzable silane compound;

[0020] S3, adding a compound of an alkali metal or alkaline earth metal element and a compound of a non-metallic element to the mixed solution B, and mixing them uniformly by ultrasonic dispersion and stirring to obtain a mixed solution C;

[0021] S4, adding a polymer or a polymer solution to the mixed solution C, uniformly mixing the mixed solution by ultrasonic dispersion and stirring, and then adding a solvent that is immiscible with water to obtain a coating solution D for preparing a hard coating having a wear-resistant concave-convex structure;

[0022] S5, coating the coating liquid D onto the corresponding substrate by a corresponding spraying device, and performing a heating and curing treatment after leveling and surface drying;

[0023] S6, calcining the solidified coating, and obtaining, after cooling, a substrate for distillation having a hard coating with a wear-resistant concave-convex structure.

[0024] In the step S1, the hydrolyzable silane compound comprises a silane coupling agent and at least one selected from methyl orthosilicate, ethyl orthosilicate, trimethoxysilane and triethoxysilane, and the silane coupling agent is selected from at least one epoxy silane coupling agent; the particle size of the monodisperse nano-silicon oxide particles is 15nm to 400nm; the solvent miscible with water comprises at least one lower alcohol, including but not limited to methanol, ethanol and isopropanol.

[0025] The catalyst is selected from at least one of nitric acid, hydrochloric acid and acetic acid; the ratio of the mass of the hydrolysis condensate of the hydrolyzable silane compound in the mixed solution B to the mass of the monodisperse nano-silicon oxide particles is 4:1 to 1:4.

[0026] In step S3, the alkali metal or alkaline earth metal element is selected from at least one of Li, Na, K, Rb, Cs, Mg, Ca, Sr and Ba, the molar ratio of the alkali metal or alkaline earth metal element to Si in the mixed solution C is 1 / 300 to 1 / 10, and the molar ratio of the non-metallic element to Si is 1 / 200 to 1 / 5.

[0027] In step S4, the polymer is selected from at least one of epoxies, block copolymers, polyacrylic acids and polyvinyl alcohols; the water-immiscible solvent contains at least one ester, including but not limited to ethyl acetate and butyl acetate; the ratio of the volume of the polymer in the coating liquid D to the sum of the volume of the hydrolyzed silane compound hydrolysis condensate and the volume of the monodisperse nano-silica is 1:4 to 2:1.

[0028] Advantages of the present invention:

[0029] 1) The present invention is provided with a material circulation mechanism on the basis of a stirring tube. During the mixing and stirring process of the materials, the materials located at the upper part of the mixing tank enter the stirring tube under the blocking and pushing of the arc-shaped feed plate, and then are thrown out along the arc-shaped discharge pipe at the bottom of the stirring tube under the action of centrifugal force and inertial force, so that the materials can be circulated through the stirring tube; on this basis, the ultrasonic vibration generated by the ultrasonic transducer will directly act on the circulating materials to ensure the mixing uniformity and ultrasonic dispersion effect of the raw materials used in the preparation of the coating liquid.

[0030] 2) The present invention provides a suspended support for the ultrasonic transducer by setting an airbag to prevent the ultrasonic transducer from being in a continuous sinking state during the ultrasonic vibration process, so that the ultrasonic transducer can be connected to the connecting tube through the bellows; in addition, the outer diameter of the airbag is smaller than the inner diameter of the stirring tube. In this way, the ultrasonic transducer can be in an active state, and in the process of the ultrasonic transducer generating ultrasonic vibration, it can form a continuous displacement in the stirring tube, thereby greatly improving its contact rate with the circulating material, so as to further greatly improve the mixing uniformity and ultrasonic dispersion effect of the raw materials used in the preparation of the coating liquid.

[0031] 3) The present invention not only realizes the movable installation of the ultrasonic transducer through the setting of the bellows, but also can effectively transmit the ultrasonic vibration generated by the ultrasonic transducer to the circulating material more fully, thereby further improving the mixing uniformity and ultrasonic dispersion effect of the raw materials used in the preparation of the coating liquid, and can reduce the transmission of the ultrasonic vibration to the connecting pipe, thereby effectively improving the practical effect of the present invention.

[0032] 4) The present invention not only realizes the suspension support of the ultrasonic transducer through the provision of the airbag, but also prevents the ultrasonic transducer from excessively colliding with the stirring tube during movement, thereby further improving the practical effect of the present invention.

[0033] 5) On the basis of ensuring the mixing uniformity and ultrasonic dispersion effect of each raw material for the preparation of the coating liquid, the present invention further uses a method of in-situ encapsulation of monodisperse nano-silicon oxide particles by hydrolyzed condensates of hydrolyzable silane compounds, thereby eliminating the barrier effect of organic dispersants on the bonding between monodisperse silicon oxide particles and hydrolyzed condensates of hydrolyzable silane compounds, improving the bonding strength of hydrolyzable silane compounds hydrolyzed condensates to monodisperse nano-silicon oxide particles, and preventing monodisperse silicon oxide particles from being too protruding on the surface of the coating formed subsequently, thereby improving the wear resistance of the coating; by adding a mixed solvent of polymer material and different polarities, the polymer phase gradually precipitates during the curing process of the coating and occupies a certain volume, and then removes it by calcination to obtain concave holes, which makes up for the problem of low roughness caused by insufficient protrusion of silicon oxide particles; by adding alkali metals or alkaline earth metal elements and B and P, the network structure of the coating is optimized, and cracking of the coating during heat treatment is prevented. According to the test, the coating of the distillation substrate prepared by the present invention can significantly increase the roughness of the coating while ensuring the wear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the present invention.

[0035] Figure 2 It is a cross-sectional view of the present invention.

[0036] Figure 3It is a structural schematic diagram of the stirring mechanism of the present invention.

[0037] Figure 4 It is a schematic structural diagram of the vibration dispersion mechanism of the present invention.

[0038] Figure 5-6 This is a SEM photograph of the surface coating of the distillation substrate prepared in Example 2 of the present invention.

[0039] In the accompanying drawings: mixing tank 1, sealing cover 2, feed pipe 3, discharge pipe 4, stirring mechanism 5, stirring pipe 501, stirring blade 502, drive motor 503, material circulation mechanism 6, arc-shaped feed plate 601, arc-shaped discharge pipe 602, sealing plate 7, vibration dispersion mechanism 8, connecting pipe 801, bellows 802, ultrasonic transducer 803, airbag 9, support foot 10, cover plate 11, discharge valve 12, mounting pipe 13, bearing 14. DETAILED DESCRIPTION

[0040] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments in conjunction with the accompanying drawings:

[0041] Embodiment 1:

[0042] refer to Figure 1-2 , a liquid material mixing device, comprising:

[0043] A mixing tank 1, with a corresponding cover 2 fixedly mounted on the upper part, a feed pipe 3 being arranged on the cover 2, and a corresponding discharge pipe 4 being arranged at the bottom of the mixing tank 1;

[0044] The stirring mechanism 5 comprises a stirring tube 501 rotatably mounted on the lower side of the cover 2, and a corresponding stirring blade 502 is fixedly mounted on the stirring tube 501. The stirring tube 501 is driven by a corresponding driving motor 503;

[0045] The material circulation mechanism 6 comprises an arc-shaped feed plate 601 fixedly connected to the upper side of the stirring tube 501 at intervals, and an arc-shaped discharge pipe 602 connected to the bottom of the stirring tube 501 at intervals, and the bottom of the stirring tube 501 is sealed and installed with a corresponding sealing plate 7; the opening of the arc-shaped feed plate 601 faces the rotation direction of the stirring tube 501, and the stirring tube 501 is respectively provided with corresponding feed ports at positions corresponding to the arc-shaped feed plate 601; the opening of the arc-shaped discharge pipe 602 faces the opposite direction of the rotation direction of the stirring tube 501;

[0046] The vibration dispersion mechanism 8 comprises a connecting tube 801 fixedly connected to the middle part of the cover 2, the bottom of the connecting tube 801 is downwardly connected to a corresponding ultrasonic transducer 803 through a bellows 802, an air bag 9 arranged in a ring shape is fixedly installed on the upper part of the ultrasonic transducer 803, the outer diameter of the air bag 9 is smaller than the inner diameter of the stirring tube 501, and the ultrasonic transducer 803 is connected to an external ultrasonic generator; the stirring tube 501 rotates to drive the stirring blade 502 to mix and stir the material in the mixing tank 1, and the material located at the upper part of the mixing tank 1 enters the stirring tube 501 under the blocking and pushing of the arc-shaped feed plate 601, and the material entering the stirring tube 501 forms sufficient contact with the ultrasonic transducer located in the stirring tube 501, and after being fully dispersed under ultrasonic vibration, it is thrown out along the arc-shaped discharge pipe 602 at the bottom of the stirring tube 501 under the action of centrifugal force and inertial force.

[0047] On the basis of the stirring tube 501, the present invention is additionally provided with a material circulation mechanism 6. During the mixing and stirring process of the materials, the materials located at the upper part of the mixing tank 1 enter the stirring tube 501 under the blocking and pushing of the arc-shaped feed plate 601, and then are thrown out along the arc-shaped discharge pipe 602 at the bottom of the stirring tube 501 under the action of centrifugal force and inertial force, so that the materials can be circulated through the stirring tube 501; on this basis, the ultrasonic vibration generated by the ultrasonic transducer 803 will directly act on the circulating materials to ensure the mixing uniformity and ultrasonic dispersion effect of the raw materials used in the preparation of the coating liquid.

[0048] The present invention provides a suspension support for the ultrasonic transducer 803 by setting the airbag 9 to prevent the ultrasonic transducer 803 from being in a continuous sinking state during the ultrasonic vibration process, so that the ultrasonic transducer 803 can be connected to the connecting tube 801 through the bellows 802; in addition, the outer diameter of the airbag 9 is smaller than the inner diameter of the stirring tube 501. In this way, the ultrasonic transducer 803 can be in an active state, and in the process of the ultrasonic transducer 803 generating ultrasonic vibration, it can form a continuous displacement in the stirring tube 501, thereby greatly improving its contact rate with the circulating material, so as to further greatly improve the mixing uniformity and ultrasonic dispersion effect of the raw materials for the preparation of the coating liquid.

[0049] By setting the bellows 802, not only can the ultrasonic transducer 803 be installed movably, but also the ultrasonic vibration generated by the ultrasonic transducer 803 can be effectively transmitted to the circulating material more fully, thereby further improving the mixing uniformity and ultrasonic dispersion effect of the raw materials for the preparation of the coating liquid, and reducing the transmission of the ultrasonic vibration to the connecting tube 801, thereby effectively improving the practical effect of the present invention. And by setting the airbag 9, not only can the ultrasonic transducer 803 be suspended and supported, but also the ultrasonic transducer 803 can be prevented from excessively colliding with the stirring tube 501 during the movement, thereby further improving the practical effect of the present invention.

[0050] The mixing tank 1 is supported and installed by corresponding supporting legs 10 , a corresponding cover plate 11 is installed on the feed pipe 3 in an openable and closable manner, and a corresponding discharge valve 12 is fixedly installed on the discharge pipe 4 .

[0051] The bottom side of the cover 2 is fixedly connected downwardly with a corresponding mounting tube 13 at a position corresponding to the stirring tube 501, and the stirring tube 501 is rotatably sleeved on the mounting tube 13 through a corresponding bearing 14. The stirring tube 501 is connected to the output shaft end of the driving motor 503 through a gear meshing transmission. The cross section of the airbag 9 is set in a circular shape.

[0052] Embodiment 2:

[0053] A method for preparing a distillation substrate based on the liquid-material mixing device described above comprises the following specific steps:

[0054] S1, weigh 60g of tetraethyl orthosilicate, 30g of silane coupling agent (KH560) and 70g of monodisperse nano-silicon oxide dispersion with a solid content of 30%, wherein the particle size of the monodisperse nano-silicon oxide particles is 150nm, add ethanol and isopropanol,

[0055] The above materials are fed into the liquid-material mixing equipment described in the above embodiment 1, and the materials are uniformly mixed by ultrasonic dispersion and stirring to obtain a mixed liquid A;

[0056] S2, adding deionized water and nitric acid to the mixed solution A, and performing ultrasonic dispersion and stirring again to obtain a mixed solution B having a silicon oxide solid content of about 15%;

[0057] S3, 0.5 g P2O5 and 1.5 g sodium acetate are mixed in mixed solution B by ultrasonic dispersion and stirring to obtain mixed solution C;

[0058] S4, weighing 10g of the mixed solution C, adding 3g of a 10% 205 type polyvinyl alcohol aqueous solution thereto, uniformly mixing by ultrasonic dispersion and stirring, then adding 4g of butyl acetate, and uniformly stirring by ultrasonic stirring to obtain a coating solution D for preparing a hard coating having a wear-resistant concave-convex structure;

[0059] S5, coating the coating liquid D onto the corresponding substrate by a corresponding spraying device. The substrate in this embodiment is a 100 mm×100 mm ordinary glass substrate that has been cleaned. After leveling and surface drying, it is placed in an oven, dried at 80° C. for 10 minutes, and then transferred to 200° C. for half an hour for heating and curing.

[0060] S6, putting the glass with the solidified coating into an electric furnace, calcining it at 580° C. for two hours, and obtaining the glass with the hard coating having the wear-resistant concave-convex structure after cooling.

[0061] like Figure 5 , 6 As shown: SEM photo of the surface coating of the distillation substrate prepared in Example 2 of the present invention, Figure 5 , 6 It can be seen that the substrate for distillation prepared by the present invention has a concave-convex structure on the surface of the coating composed of protrusions formed by silica particle clusters and pits formed by the polymer phase between the silica particle clusters. The monodispersed nano-silicon oxide particles are firmly bonded together by the silica part formed by hydrolyzable silane through the in-situ encapsulation method, which reduces the protruding parts of the nano-silicon oxide particles on the surface and improves the wear resistance of the coating. The silica clusters and pits are prepared by the method of separating the polymer phase and the silica phase, which increases the roughness of the coating while ensuring the wear resistance.

[0062] 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 principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A liquid material mixing device, characterized in that: include: A mixing tank (1) is provided with a corresponding sealing cover (2) fixedly mounted on the upper part, a feeding pipe (3) is provided on the sealing cover (2), and a corresponding discharging pipe (4) is provided at the bottom of the mixing tank (1). A stirring mechanism (5), comprising a stirring tube (501) rotatably mounted on the lower side of the cover (2), a corresponding stirring blade (502) being fixedly mounted on the stirring tube (501), and the stirring tube (501) is driven by a corresponding driving motor (503); The material circulation mechanism (6) comprises an arc-shaped feed plate (601) fixedly connected to the upper side of the stirring tube (501) at intervals, and an arc-shaped discharge pipe (602) connected to the bottom of the stirring tube (501) at intervals, and the bottom of the stirring tube (501) is sealed and installed with a corresponding sealing plate (7); the opening of the arc-shaped feed plate (601) faces the rotation direction of the stirring tube (501), and the stirring tube (501) is respectively provided with corresponding feed ports at positions corresponding to the arc-shaped feed plate (601); the opening of the arc-shaped discharge pipe (602) faces the direction opposite to the rotation direction of the stirring tube (501); The vibration dispersion mechanism (8) comprises a connecting tube (801) fixedly connected to the middle of the cover (2); the bottom of the connecting tube (801) is downwardly connected to a corresponding ultrasonic transducer (803) through a bellows (802); an air bag (9) arranged in a ring shape is fixedly mounted on the upper part of the ultrasonic transducer (803); the outer diameter of the air bag (9) is smaller than the inner diameter of the stirring tube (501); the ultrasonic transducer (803) is connected to an external ultrasonic generator; the stirring tube (501) rotates The stirring blades (502) are driven to mix and stir the materials in the mixing tank (1); the materials located at the upper part of the mixing tank (1) enter the interior of the stirring tube (501) under the blocking and pushing of the arc-shaped feed plate (601); the materials entering the stirring tube (501) are in full contact with the ultrasonic transducer movably located in the stirring tube (501); after being fully dispersed under ultrasonic vibration, the materials are thrown out along the arc-shaped discharge tube (602) at the bottom of the stirring tube (501) under the action of centrifugal force and inertial force; A corresponding mounting tube (13) is fixedly connected downwardly to the bottom side of the cover (2) at a position corresponding to the stirring tube (501); the stirring tube (501) is rotatably sleeved onto the mounting tube (13) via a corresponding bearing (14); The stirring tube (501) is connected to the output shaft end of the driving motor (503) by means of gear meshing transmission.

2. A liquid material mixing device according to claim 1, characterized in that: The mixing tank (1) is supported and installed by corresponding supporting legs (10); a corresponding cover plate (11) is installed on the feed pipe (3) in an openable and closable manner; and a corresponding discharge valve (12) is fixedly installed on the discharge pipe (4).

3. A liquid material mixing device according to claim 1, characterized in that: The cross section of the airbag (9) is arranged in a circular or elliptical shape.

4. A method for preparing a distillation substrate of a liquid-material mixing device according to any one of claims 1 to 3, characterized in that: The following specific steps are included: S1, weighing a hydrolyzable silane compound, monodisperse nano-silicon oxide and a solvent miscible with water, adding the materials to the liquid-material mixing device, and uniformly mixing the materials by ultrasonic dispersion and stirring to obtain a mixed solution A; S2, adding deionized water and a catalyst to the mixed solution A, and performing ultrasonic dispersion and stirring again to obtain a mixed solution B containing monodisperse nano-silicon oxide particles in situ encapsulated by a hydrolyzed condensate of a hydrolyzable silane compound; S3, adding a compound of an alkali metal or alkaline earth metal element and a compound of a non-metallic element to the mixed solution B, and mixing them uniformly by ultrasonic dispersion and stirring to obtain a mixed solution C; S4, adding a polymer or a polymer solution to the mixed solution C, uniformly mixing the mixed solution by ultrasonic dispersion and stirring, and then adding a solvent that is immiscible with water to obtain a coating solution D for preparing a hard coating having a wear-resistant concave-convex structure; S5, coating the coating liquid D onto the corresponding substrate by a corresponding spraying device, and performing a heating and curing treatment after leveling and surface drying; S6, calcining the solidified coating, and obtaining, after cooling, a substrate for distillation having a hard coating with a wear-resistant concave-convex structure.

5. The method for preparing a distillation substrate according to claim 4, characterized in that: In the step S1, the hydrolyzable silane compound comprises a silane coupling agent and at least one selected from methyl orthosilicate, ethyl orthosilicate, trimethoxysilane and triethoxysilane, and the silane coupling agent is selected from at least one epoxy silane coupling agent; the particle size of the monodisperse nano-silicon oxide particles is 15nm to 400nm; the solvent miscible with water comprises at least one lower alcohol, including but not limited to methanol, ethanol and isopropanol.

6. The method for preparing a distillation substrate according to claim 4, characterized in that: The catalyst is selected from at least one of nitric acid, hydrochloric acid and acetic acid; the ratio of the mass of the hydrolysis condensate of the hydrolyzable silane compound in the mixed solution B to the mass of the monodisperse nano-silicon oxide particles is 4:1 to 1:

4.

7. The method for preparing a distillation substrate according to claim 4, characterized in that: In step S3, the alkali metal or alkaline earth metal element is selected from at least one of Li, Na, K, Rb, Cs, Mg, Ca, Sr and Ba, the molar ratio of the alkali metal or alkaline earth metal element to Si in the mixed solution C is 1 / 300 to 1 / 10, and the molar ratio of the non-metallic element to Si is 1 / 200 to 1 / 5.

8. The method for preparing a distillation substrate according to claim 4, characterized in that: In step S4, the polymer is selected from at least one of epoxies, block copolymers, polyacrylic acids and polyvinyl alcohols; the water-immiscible solvent contains at least one ester, including but not limited to ethyl acetate and butyl acetate; the ratio of the volume of the polymer in the coating liquid D to the sum of the volume of the hydrolyzed silane compound hydrolysis condensate and the volume of the monodisperse nano-silica is 1:4 to 2:1.

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