A processing device and method for graphene-modified degradable material

Abstract

The invention relates to the technical field of graphene materials, and in particular to a processing device and a processing method for graphene-modified degradable materials, comprising a dish, a rack and a controller. In the process of extracting, drying and film-forming graphene oxide sol, sol will remain at various positions of the film dish, resulting in waste of graphene oxide materials and weakening the processing efficiency of the graphene-modified degradable materials. Therefore, the invention utilizes a through hole to cover the solution in the dish on the bottom surface of the film dish, and cooperates to control the liquid level in the dish to be maintained within the height range of the through hole of the film dish, thereby reducing the residual amount of solution in the film dish, and utilizes an electromagnet on a truss rod to cooperate with a tension spring between telescopic rods to control the clamping action of the telescopic rod on the film dish. After the previous film dish is placed in an oven, the next film dish can be clamped and placed in the dish to extract the solution, thereby improving the utilization rate of the graphene-modified degradable materials and the operation effect of the processing equipment.

Description

Technical Field

[0001] The invention relates to the technical field of graphene materials, and in particular to processing equipment and a processing method for a graphene-modified degradable material. Background Art

[0002] Graphene is a two-dimensional material composed of carbon atoms in a honeycomb regular hexagonal layered structure. It is only one carbon atom layer thick. Graphene has a large specific surface area, good conductivity, and optical, thermal, and mechanical properties, making it a good material for catalyst carriers. Graphene oxide, one of the important members of the graphene family of materials, introduces a large number of electronegative oxygen-containing functional groups such as epoxy, hydroxyl, and carboxyl groups on the six-membered carbon ring. The catalytic principle of photocatalysts is that under the action of light, the electrons of the semiconductor catalyst are excited to transition to form a single electron, and holes are formed at the corresponding positions. The oxidation of the holes oxidizes organic matter, thereby reducing the organic matter content in water. Graphene oxide can act as an electron conductor in this process to promote the generation of holes. Graphene oxide can be prepared by redox method, is inexpensive, and is a better carrier in the degradation of organic matter in water.

[0003] Although graphene oxide loaded semiconductor catalysts can play a photocatalytic role, organic matter in water bodies can be oxidized and decomposed by graphene oxide modified catalysts. During the modification process, the aqueous sol containing graphene oxide and catalyst components needs to be extracted and dried to form a graphene oxide film loaded with titanium dioxide catalyst. Due to the high cost of graphene oxide and the extremely thin thickness of a single atomic layer, during the process of extracting, drying and forming the sol into a film, the sol will remain in various locations of the membrane disk, resulting in a waste of graphene oxide materials and weakening the processing efficiency of graphene modified degradation materials.

[0004] For example, a Chinese patent with application number CN201310749504.9 discloses a method for preparing a graphene / bismuth tungstate sheet nanostructure visible light catalytic material and a silicon modification method thereof. The method uses bismuth nitrate, tungstate, tetraethyl orthosilicate and graphene as raw materials, and prepares the graphene / bismuth tungstate sheet nanostructure solar light catalytic material through organic electrolyte-assisted hydrothermal, low-temperature freezing, aging, washing, drying and other steps, and further uses silicon modification to enhance the catalytic performance of the material; the technical scheme uses low-temperature freezing organic electrolyte-assisted hydrothermal method to obtain graphene / bismuth tungstate sheet visible light catalytic materials with strong adsorption and high activity, and further improves the performance of the graphene / bismuth tungstate sheet structure through silicon modification; the catalytic material of the technical scheme can be applied to sewage treatment, photodegradation of water, air purification and solar cells and other fields; however, the technical scheme involves a large number of types of added materials and reaction parameter controls, making the modification process of graphene more complicated.

[0005] In view of this, the present invention proposes a processing device and a processing method for graphene-modified degradable materials to solve the above-mentioned technical problems. Summary of the invention

[0006] In order to make up for the shortcomings of the prior art, the present invention proposes a processing equipment and a processing method for graphene-modified biodegradable materials. Through the self-leveling property of the solution formed by graphene oxide and catalyst in the dish, the solution is covered on the bottom surface of the membrane dish through the through-hole, and the liquid level in the dish is controlled to be maintained within the height range of the through-hole of the membrane dish, thereby reducing the residual solution in the membrane dish. The electromagnet on the truss is used in conjunction with the tension spring between the telescopic rods to control the clamping action of the telescopic rod on the membrane dish. After the previous membrane dish is placed in the oven, the next membrane dish can be clamped and placed in the dish for solution extraction, thereby improving the utilization rate of the graphene-modified biodegradable materials and the operation effect of the processing equipment.

[0007] The processing equipment of graphene-modified degradable materials described in the present invention comprises a dish, a bag rack and a controller; the dish is used to hold graphene oxide solution, and the outer side of the dish is provided with a bag rack; a sliding truss is also installed in the bag rack, and the truss moves along the bag rack through a motor installed thereon; a pair of sliding telescopic rods are also provided on the truss, and a tension spring is also provided on the surface of the truss, and the two ends of the tension spring are fixed to the telescopic rods at both ends of the truss; a fixed electromagnet is also installed in the middle of the truss, and iron blocks are fixed to the telescopic rods on both sides of the electromagnet; a membrane disk is also provided at the bottom end of the telescopic rod, and a through hole is opened on the bottom surface of the side wall of the membrane disk; the membrane disk is a hollow shell structure floating in the dish, and a raised key-shaped block is also provided on the top of the membrane disk toward the center of the side wall of the telescopic rod; a concave key-shaped pit is also provided at the bottom end of the telescopic rod, and the telescopic rod is engaged on the key-shaped block through the key-shaped pit to fix the membrane disk; the controller is used to adjust the operation of the processing equipment;

[0008] In the prior art, organic matter in water is oxidized and decomposed by using a graphene oxide modified catalyst. During the modification process, a water sol containing graphene oxide and catalyst components needs to be extracted and dried to form a graphene oxide film loaded with a titanium dioxide catalyst. Due to the high cost of graphene oxide and the extremely thin thickness of a single atomic layer, during the process of extracting and drying the sol to form a film, the sol will remain at various locations of the film disk, resulting in a waste of graphene oxide materials and weakening the processing efficiency of graphene modified degradation materials.

[0009] Therefore, the present invention provides a through hole on the bottom surface of the side wall of the membrane tray, which cooperates with the hollow shell structure of the membrane tray to make the membrane tray float on the liquid surface of the dish tray. The key-shaped pit provided at the bottom end of the telescopic rod is engaged with the key-shaped block raised on the top of the membrane tray through the force of the tension spring between the telescopic rods. Then, the bottom surface of the membrane tray is pressed below the liquid surface of the dish tray through the telescopic rod, and the liquid surface in the dish tray is controlled to be maintained within the height range of the through hole of the membrane tray, so that the solution in the dish tray flows into the membrane tray through the through hole. Then, the motor on the truss is started to move it along the rack, and then the solution in the dish tray is driven to flow relative to the surface of the membrane tray, so that the solution extracted on the membrane tray tends to be evenly distributed. Then, the telescopic rod is retracted to make the membrane tray be above the liquid surface of the dish tray. The self-leveling effect of the solution on the membrane tray is utilized to discharge the excess solution and finally form a thin film. The membrane tray is moved into the oven, and the iron block is repelled by starting the electromagnet on the truss, so that the telescopic rod overcomes the force of the tension spring therebetween and stretches out along the truss, and then disengages from the engagement with the membrane tray. The solution in the membrane tray forms a graphene oxide film loaded with a catalyst after drying. The present invention utilizes the self-leveling property of the solution formed by graphene oxide and the catalyst in the dish, so that it covers the bottom surface of the membrane tray through the through-hole, and cooperates to control the liquid level in the dish to be maintained within the height range of the through-hole of the membrane tray, thereby reducing the residual solution in the membrane tray, and utilizes the electromagnet on the truss to cooperate with the tension spring between the telescopic rods to control the engagement action of the telescopic rod on the membrane tray. After the previous membrane tray is placed in the oven, the next membrane tray can be engaged and placed in the dish for solution extraction, thereby improving the utilization rate of graphene-modified degradable materials and the operating effect of the processing equipment.

[0010] Preferably, the bottom surface of the through-hole of the membrane disk is provided with a bevel, and the top edge of the inner wall of the membrane disk is provided with a cut angle; the bottom surface of the through-hole is lower than the bottom surface of the membrane disk; during operation, the bevel provided on the bottom surface of the through-hole allows the solution retained at the through-hole during the self-leveling process to flow out, and the through-hole is lower than the bottom surface of the membrane disk, so that the edge of the solution retained on the bottom surface of the membrane disk forms a straight incision, ensuring the shape of the catalyst-loaded graphene oxide film after drying, and at the same time, the cut angle provided on the top of the side wall of the membrane disk increases the opening area at the top of the membrane disk, making it easier for the membrane disk placed in the oven to fully receive the heat radiation for drying, and the cut angle located at the side wall of the membrane disk strengthens the drying effect on the edge corners of the bottom surface of the membrane disk, shortens the molding time of the graphene oxide film on the membrane disk, and thus improves the operating effect of the graphene modified degradable material processing equipment.

[0011] Preferably, the edge of the membrane disk below the through-hole is also fixed with fins, and the fins are perpendicular to the axial direction of the truss; during operation, the truss slidably installed on the rack drives the membrane disk to move in the solution of the dish via the telescopic rod, and through the fins arranged on the membrane disk, when the reciprocating membrane disk in the dish causes the solution therein to flow around, the fins perpendicular to the truss can guide the movement of the membrane disk in the dish, reduce the interference and shaking of the solution forming the flow around in the dish on the movement of the membrane disk, maintain the clamping stability between the key block and the key pit, thereby improving the operating effect of the graphene-modified degradable material processing equipment.

[0012] Preferably, a hinged column plate is provided on the bottom end of the telescopic rod; the key-shaped pit is provided on the surface of the column plate facing the membrane plate, and the edge of the key-shaped pit is also provided with a rounded corner on the surface of the column plate; the column plate makes the key-shaped pit match the posture of the key-shaped block under the action of gravity; when working, the column plate hinged at the bottom of the telescopic rod, the rounded corners on the edge of the key-shaped pit on the surface of the column plate, and the posture of the column plate itself under the action of gravity make the telescopic rod on the truss rod approach the membrane plate by utilizing the rounded corners of the key-shaped pit and the rotatable The column plate enhances the convenience of engagement between the key-shaped pit and the key-shaped block. At the same time, the column plate hinged on the telescopic rod cooperates with the key-shaped block at the center of the side wall of the membrane plate. When the telescopic rod lifts the membrane plate above the dish plate, if the solution extracted on the membrane plate is unevenly distributed, the membrane plate is tilted through the hinge, and the side of the membrane plate with excessive solution flows out, further maintaining the leveling of the solution on the bottom surface of the membrane plate, maintaining the film-forming quality of graphene oxide, thereby improving the operation effect of the graphene-modified biodegradable material processing equipment.

[0013] Preferably, the surface of the truss is provided with a groove rail, in which a tension spring fixedly connected between the telescopic rods is installed; the top end of the telescopic rod is slidably installed in the groove rail of the truss through a groove block; when working, the groove rail provided on the truss is used to place the tension spring fixedly connected between the telescopic rods, so that the axial torsion generated by the tension spring during the telescopic process is limited by the groove block slidably installed in the groove rail, thereby preventing the tension spring from causing relative deflection between the telescopic rods sliding on the truss during the telescopic process, making it difficult for the key-shaped pit at the bottom of the telescopic rod to simultaneously engage with the key-shaped blocks on both sides of the membrane disk, thereby ensuring the smooth engagement process between the telescopic rod and the membrane disk, thereby stabilizing the operation effect of the graphene-modified degradable material processing equipment.

[0014] A method for processing a graphene-modified degradable material according to the present invention is applicable to the processing equipment for the graphene-modified degradable material, and the method comprises the following steps:

[0015] S1, graphene preparation: 60-100 mesh flake graphite is used as raw material, and potassium permanganate in concentrated sulfuric acid is used to react with graphite powder in a dish to obtain brown graphite flakes with derived carboxylic acid groups on the edge and mainly phenolic hydroxyl groups and epoxy groups on the plane. This graphite flake layer can be peeled off into graphene oxide by ultrasonic vigorous stirring, and a stable, light brown single-layer graphene oxide suspension is formed in water;

[0016] S2, modification to form a film; after the graphene suspension in S1 is washed until the pH of the washing liquid is greater than 6, a dispersion is formed in water, and titanium tetrachloride is immediately added to the dispersion, heated and hydrolyzed to make the titanium tetrachloride in the dispersion, so that the sol formed is adsorbed on the graphene oxide, and then the dispersion containing the sol is extracted to form a liquid layer on the membrane disk, and after drying, a graphene oxide film loaded with titanium dioxide catalyst is formed;

[0017] S3, monomer film preparation: using a PET transparent film as a filter plate, dispersing the graphene oxide dispersion in S2 on the surface of the filter plate by suction filtration, and evenly applying it with a coating machine, and after drying in a blast drying oven, covering the top of the graphene oxide with another layer of PET transparent film, and sealing the outer sides of the two layers of PET transparent film by hot-melt method, to process the graphene oxide monomer film;

[0018] S4, composite reactor: install the monomer membrane in S3 into the curtain membrane reactor, and form a conical three-dimensional structure between the monomer membranes. During the use of the curtain membrane reactor, the organic wastewater can directly pass through the graphene oxide film containing the catalyst to complete the reaction without being dispersed in water. The film is used to make a membrane reactor, which can realize the conversion of discontinuous treatment in the water treatment process into continuous treatment and increase efficiency.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention utilizes the self-leveling property of the solution formed by graphene oxide and the catalyst in the dish to cover the bottom surface of the membrane dish through the through-hole, and cooperates to control the liquid level in the dish to be maintained within the height range of the through-hole of the membrane dish, thereby reducing the residual solution in the membrane dish, and utilizes the electromagnet on the truss to cooperate with the tension spring between the telescopic rods to control the engagement action of the telescopic rods on the membrane dish. After the previous membrane dish is placed in the oven, the next membrane dish can be engaged and placed in the dish to extract the solution.

[0021] 2. The present invention sets an oblique angle on the bottom surface of the through-hole to allow the solution retained in the through-hole during the self-leveling process to flow out. The through-hole is lower than the bottom surface of the membrane disc, so that the edge of the solution retained on the bottom surface of the membrane disc forms a straight incision, ensuring the shape of the graphene oxide film loaded with catalyst after drying. At the same time, the cut angle set on the top of the side wall of the membrane disc increases the opening area at the top of the membrane disc, which is convenient for the membrane disc placed in the oven to fully receive the heat radiation for drying. The cut angle located at the side wall of the membrane disc strengthens the drying effect on the edge corners of the bottom surface of the membrane disc, thereby shortening the molding time of the graphene oxide film on the membrane disc.

[0022] 3. The present invention arranges a groove rail on the truss to place the tension spring fixed between the telescopic rods, so that the axial torsion of the tension spring during the telescopic process is limited by the groove block slidably installed in the groove rail, thereby preventing the tension spring from causing relative deflection between the telescopic rods sliding on the truss during the telescopic process, making it difficult for the key-shaped pit at the bottom of the telescopic rod to simultaneously engage with the key-shaped blocks on both sides of the membrane disk, thereby ensuring the smooth engagement process between the telescopic rod and the membrane disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0024] Figure 1 It is a flow chart of the graphene modified degradable material processing method of the present invention;

[0025] Figure 2 It is a stereoscopic diagram of the graphene-modified degradable material processing equipment of the present invention;

[0026] Figure 3 is an exploded view of the membrane disc component of the present invention;

[0027] Figure 4 yes Figure 2 A partial enlarged view of the middle A;

[0028] Figure 5 yes Figure 3 A partial enlarged view of point B in the middle;

[0029] In the figure: 1, dish plate; 2, rack; 3, truss; 31, motor; 32, tension spring; 33, electromagnet; 34, groove rail; 4, telescopic rod; 41, iron block; 42, key-shaped pit; 43, column plate; 44, fillet; 45, groove block; 5, membrane plate; 51, through-hole; 511, bevel; 52, key-shaped block; 53, cut corner; 54, fin. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figures 1 to 5 As shown, a processing device for graphene-modified degradable materials described in the present invention comprises a dish 1, a rack 2 and a controller; the dish 1 is used to hold graphene oxide solution, and the outer side of the dish 1 is provided with a rack 2; a sliding truss 3 is also installed in the rack 2, and the truss 3 moves along the rack 2 through a motor 31 installed thereon; a pair of sliding telescopic rods 4 are also provided on the truss 3, and a tension spring 32 is also provided on the surface of the truss 3, and the two ends of the tension spring 32 are fixed to the telescopic rods 4 at the two ends of the truss 3; a fixed The electromagnet 33 is fixed, and the telescopic rods 4 on both sides of the electromagnet 33 are fixedly connected with iron blocks 41; the bottom end of the telescopic rod 4 is also provided with a membrane disc 5, and a through hole 51 is opened on the bottom surface of the side wall of the membrane disc 5; the membrane disc 5 is a hollow shell structure floating in the dish 1, and a protruding key-shaped block 52 is also provided on the top of the membrane disc 5 toward the center of the side wall of the telescopic rod 4; the bottom end of the telescopic rod 4 is also provided with a concave key-shaped pit 42, and the telescopic rod 4 is engaged with the key-shaped block 52 through the key-shaped pit 42 to fix the membrane disc 5; the controller is used to adjust the operation of the processing equipment;

[0032] In the prior art, organic matter in water is oxidized and decomposed by a graphene oxide modified catalyst. During the modification process, a water sol containing graphene oxide and catalyst components needs to be extracted and dried to form a graphene oxide film loaded with a titanium dioxide catalyst. Due to the high cost of graphene oxide and the extremely thin thickness of a single atomic layer, during the process of extracting, drying and forming the sol into a film, the sol will remain at various locations of the membrane disk 5, resulting in a waste of graphene oxide materials and weakening the processing efficiency of graphene modified degradation materials.

[0033] Therefore, the present invention provides a through hole 51 on the bottom surface of the side wall of the membrane tray 5, in conjunction with the hollow shell structure of the membrane tray 5, so that the membrane tray 5 floats on the liquid surface of the dish tray 1, and the key-shaped pit 42 provided at the bottom end of the telescopic rod 4 is engaged with the key-shaped block 52 protruding on the top of the membrane tray 5 through the force of the tension spring 32 between the telescopic rods 4, and then the bottom surface of the membrane tray 5 is pressed below the liquid surface of the dish tray 1 through the telescopic rod 4, and the liquid surface in the dish tray 1 is controlled to be within the height range of the through hole 51 of the membrane tray 5, so that the solution in the dish tray 1 flows into the membrane tray 5 through the through hole 51, and then the motor 31 on the truss 3 is started to move it along the rack 2, and then the solution in the dish tray 1 is driven to flow relative to the surface of the membrane tray 5, so that the solution extracted on the membrane tray 5 tends to be evenly distributed, and then the telescopic rod 4 is retracted to make the membrane tray 5 above the liquid surface of the dish tray 1, and the self-leveling effect of the solution on the membrane tray 5 is utilized to discharge the excess solution and finally form a thin film. Then, the membrane plate 5 is moved into the oven, and the iron block 41 is repelled by starting the electromagnet 33 on the truss 3, so that the telescopic rod 4 overcomes the force of the tension spring 32 therebetween and is stretched along the truss 3, and then is separated from the engagement with the membrane plate 5. The solution in the membrane plate 5 forms a graphene oxide film loaded with a catalyst after drying. The present invention utilizes the self-leveling property of the graphene oxide and the catalyst in the dish 1 to form a solution, so that it is covered on the bottom surface of the membrane plate 5 through the through-hole 51, and cooperates to control the liquid level in the dish 1 to be maintained within the height range of the through-hole 51 of the membrane plate 5, thereby reducing the residual solution in the membrane plate 5, and utilizes the electromagnet 33 on the truss 3 to cooperate with the tension spring 32 between the telescopic rod 4 to control the engagement action of the telescopic rod 4 on the membrane plate 5. After the previous membrane plate 5 is placed in the oven, the next membrane plate 5 can be engaged and placed in the dish 1 for solution extraction, thereby improving the utilization rate of the graphene-modified degradable material and the operation effect of the processing equipment.

[0034] As an embodiment of the present invention, the bottom surface of the through-hole 51 of the membrane disk 5 is provided with an oblique angle 511, and the top edge of the inner wall of the membrane disk 5 is provided with a cut angle 53; the bottom surface of the through-hole 51 is lower than the bottom surface of the membrane disk 5; during operation, the solution retained in the through-hole 51 during the self-leveling process flows out through the oblique angle 511 provided on the bottom surface of the through-hole 51, and the through-hole 51 is lower than the bottom surface of the membrane disk 5, so that the edge of the solution retained on the bottom surface of the membrane disk 5 forms a straight incision, ensuring the shape of the graphene oxide film loaded with catalyst after drying, and at the same time, the cut angle 53 provided on the top of the side wall of the membrane disk 5 increases the opening area at the top of the membrane disk 5, so that the membrane disk 5 placed in the oven can fully receive the heat radiation for drying, and the cut angle 53 located at the side wall of the membrane disk 5 strengthens the drying effect on the edge corners of the bottom surface of the membrane disk 5, shortens the molding time of the graphene oxide film on the membrane disk 5, thereby improving the operation effect of the graphene modified degradable material processing equipment.

[0035] As an embodiment of the present invention, a fin 54 is fixedly connected to the edge of the membrane disk 5 below the through-hole 51, and the fin 54 is perpendicular to the axial direction of the truss 3; when working, the truss 3 slidably mounted on the rack 2 drives the membrane disk 5 to move in the solution of the dish 1 through the telescopic rod 4, and through the fin 54 arranged on the membrane disk 5, when the membrane disk 5 reciprocating in the dish 1 causes the solution therein to flow around, the fin 54 perpendicular to the truss 3 can guide the movement of the membrane disk 5 in the dish 1, reduce the interference and shaking of the solution forming the flow in the dish 1 on the movement process of the membrane disk 5, maintain the clamping stability between the key block 52 and the key pit 42, thereby improving the operation effect of the graphene-modified degradable material processing equipment.

[0036] As an embodiment of the present invention, a hinged column plate 43 is provided on the bottom end of the telescopic rod 4; the key-shaped pit 42 is opened on the surface of the column plate 43 facing the membrane plate 5, and the key-shaped pit 42 is also provided with a rounded corner 44 on the edge of the column plate 43 surface; the column plate 43 makes the key-shaped pit 42 match the posture of the key-shaped block 52 under the action of gravity; when working, the telescopic rod 4 on the truss rod 3 is used to approach the membrane plate 5 by means of the column plate 43 hinged at the bottom of the telescopic rod 4, the rounded corner 44 on the surface of the column plate 43 at the edge of the key-shaped pit 42, and the posture of the column plate 43 itself under the action of gravity. The rounded corners 44 of the key-shaped pit 42 and the rotatable column disk 43 enhance the convenience of the engagement between the key-shaped pit 42 and the key-shaped block 52. At the same time, the column disk 43 hinged on the telescopic rod 4 cooperates with the key-shaped block 52 at the center of the side wall of the membrane disk 5. When the telescopic rod 4 lifts the membrane disk 5 above the dish disk 1, when the solution extracted on the membrane disk 5 is unevenly distributed, the membrane disk 5 is tilted through the hinge, and the side of the membrane disk 5 with excessive solution flows out, further maintaining the leveling of the solution on the bottom surface of the membrane disk 5, maintaining the film-forming quality of graphene oxide, and thus improving the operating effect of the graphene-modified degradable material processing equipment.

[0037] As an embodiment of the present invention, a groove rail 34 is provided on the surface of the truss 3, and a tension spring 32 fixedly connected between the telescopic rods 4 is installed in the groove rail 34; the top of the telescopic rod 4 is slidably installed in the groove rail 34 of the truss 3 through a groove block 45; when working, the groove rail 34 provided on the truss 3 is used to place the tension spring 32 fixedly connected between the telescopic rods 4, so that the axial torsion generated by the tension spring 32 during the telescopic process is limited by the groove block 45 slidably installed in the groove rail 34, thereby preventing the tension spring 32 from causing relative deflection between the telescopic rods 4 sliding on the truss 3 during the telescopic process, making it difficult for the key-shaped pit 42 at the bottom of the telescopic rod 4 to simultaneously engage with the key-shaped blocks 52 on both sides of the membrane disk 5, thereby ensuring the smooth engagement process between the telescopic rod 4 and the membrane disk 5, thereby stabilizing the operation effect of the graphene-modified degradable material processing equipment.

[0038] A method for processing a graphene-modified degradable material according to the present invention is applicable to the processing equipment for the graphene-modified degradable material, and the method comprises the following steps:

[0039] S1, graphene preparation; using 60-100 mesh flake graphite as raw material, potassium permanganate in concentrated sulfuric acid and graphite powder are oxidized in dish 1 to obtain brown graphite flakes with derived carboxylic acid groups on the edge and mainly phenolic hydroxyl groups and epoxy groups on the plane, and the graphite flakes can be peeled off into graphene oxide by ultrasonic vigorous stirring, and a stable, light brown single-layer graphene oxide suspension is formed in water;

[0040] S2, modification to form a membrane; after the graphene suspension in S1 is washed until the pH of the washing liquid is greater than 6, a dispersion is formed in water, and titanium tetrachloride is immediately added to the dispersion, heated and hydrolyzed to make the titanium tetrachloride in the dispersion so that the sol formed is adsorbed on the graphene oxide, and then the dispersion containing the sol is extracted to form a liquid layer on the membrane disk 5, and after drying, a graphene oxide membrane loaded with titanium dioxide catalyst is formed;

[0041] S3, monomer film preparation: using a PET transparent film as a filter plate, dispersing the graphene oxide dispersion in S2 on the surface of the filter plate by suction filtration, and evenly applying it with a coating machine, and after drying in a blast drying oven, covering the top of the graphene oxide with another layer of PET transparent film, and sealing the outer sides of the two layers of PET transparent film by hot-melt method, to process the graphene oxide monomer film;

[0042] S4, composite reactor: install the monomer membrane in S3 into the curtain membrane reactor, and form a conical three-dimensional structure between the monomer membranes. During the use of the curtain membrane reactor, the organic wastewater can directly pass through the graphene oxide film containing the catalyst to complete the reaction without being dispersed in water. The film is used to make a membrane reactor, which can realize the conversion of discontinuous treatment in the water treatment process into continuous treatment and increase efficiency.

[0043] The specific workflow is as follows:

[0044] By means of the through-hole 51 provided on the bottom surface of the side wall of the membrane tray 5 and the hollow shell structure of the membrane tray 5, the membrane tray 5 is floated on the liquid surface of the dish tray 1. The key-shaped pit 42 provided at the bottom end of the telescopic rod 4 is engaged with the key-shaped block 52 protruding on the top of the membrane tray 5 through the force of the tension spring 32 between the telescopic rods 4. Then, the bottom surface of the membrane tray 5 is pressed below the liquid surface of the dish tray 1 through the telescopic rod 4, and the liquid surface in the dish tray 1 is controlled to be maintained within the height range of the through-hole 51 of the membrane tray 5, so that the solution in the dish tray 1 flows into the membrane tray 5 through the through-hole 51. Then, the motor 31 on the truss 3 is started to move it along the rack 2, thereby driving the solution in the dish tray 1 to flow relative to the surface of the membrane tray 5, so that the solution extracted on the membrane tray 5 tends to be evenly distributed. Then, the telescopic rod 4 is retracted. The membrane plate 5 is positioned above the liquid surface of the dish plate 1, and the excess solution is discharged by the self-leveling effect of the solution on the membrane plate 5 to eventually form a thin film. Then, the membrane plate 5 is moved into the oven, and the iron block 41 is repelled by starting the electromagnet 33 on the truss 3, so that the telescopic rod 4 overcomes the force of the tension spring 32 therebetween and is stretched along the truss 3, and then is released from the engagement with the membrane plate 5. The solution in the membrane plate 5 forms a catalyst-loaded graphene oxide film after drying. The bevel 511 provided on the bottom surface of the through-hole 51 allows the solution remaining in the through-hole 51 during the self-leveling process to flow out, and the through-hole 51 is lower than the bottom surface of the membrane plate 5, so that the edge of the solution remaining on the bottom surface of the membrane plate 5 forms a straight cut, thereby ensuring that the catalyst-loaded graphene oxide film after drying shape, and the cut angle 53 arranged on the top of the side wall of the membrane disk 5 increases the opening area of ​​the top of the membrane disk 5, which is convenient for the membrane disk 5 placed in the oven to fully receive the heat radiation for drying, and the cut angle 53 located at the side wall of the membrane disk 5 strengthens the drying effect on the edge corners of the bottom surface of the membrane disk 5, shortening the molding time of the graphene oxide film on the membrane disk 5; the fins 54 arranged on the membrane disk 5, when the membrane disk 5 reciprocating in the dish 1 causes the solution therein to flow around, the fins 54 perpendicular to the truss 3 can guide the movement of the membrane disk 5 in the dish 1, reduce the interference and shaking of the solution forming the flow in the dish 1 on the movement process of the membrane disk 5, and maintain the clamping stability between the key block 52 and the key pit 42; it is arranged at the bottom of the telescopic rod 4 The hinged column plate 43, the rounded corners 44 on the surface of the column plate 43 at the edge of the key-shaped pit 42, and the posture of the column plate 43 itself under the action of gravity make the telescopic rod 4 on the truss rod 3 use the rounded corners 44 of the key-shaped pit 42 and the rotatable column plate 43 to enhance the convenience of the engagement between the key-shaped pit 42 and the key-shaped block 52 in the process of approaching the membrane plate 5. At the same time, the column plate 43 hinged on the telescopic rod 4 cooperates with the key-shaped block 52 at the center of the side wall of the membrane plate 5. When the telescopic rod 4 lifts the membrane plate 5 above the dish plate 1, if the solution extracted from the membrane plate 5 is unevenly distributed, the membrane plate 5 is tilted through the hinge, and the side of the membrane plate 5 with excessive solution flows out, further maintaining the leveling of the solution on the bottom surface of the membrane plate 5 and maintaining the film-forming quality of graphene oxide.The groove rail 34 provided on the truss rod 3 is used to place the tension spring 32 fixedly connected between the telescopic rods 4, so that the axial torsion generated by the tension spring 32 during the telescopic process is limited by the groove block 45 slidably installed in the groove rail 34, thereby preventing the tension spring 32 from causing the telescopic rods 4 sliding on the truss rod 3 to produce relative deflection during the telescopic process, making it difficult for the key-shaped pit 42 at the bottom of the telescopic rod 4 to be simultaneously engaged with the key-shaped blocks 52 on both sides of the membrane disc 5, thereby ensuring the smooth engagement process between the telescopic rod 4 and the membrane disc 5. ;

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A processing device for graphene-modified degradable materials, Features: The invention comprises a dish (1), a rack (2) and a controller; the dish (1) is used to contain a solution of graphene oxide and a catalyst, and a rack (2) is arranged on the outer side of the dish (1); a sliding truss (3) is also installed in the rack (2), and the truss (3) moves along the rack (2) through a motor (31) installed thereon; a pair of sliding telescopic rods (4) are also arranged on the truss (3), and a tension spring (32) is also arranged on the surface of the truss (3), and the two ends of the tension spring (32) are fixed to the telescopic rods (4) at the two ends of the truss (3); a fixed electromagnet (33) is also installed in the middle of the truss (3), and the electromagnet (33) is fixed to the telescopic rod (4) at the two ends of the truss (3). Iron blocks (41) are fixedly connected to the telescopic rods (4) on both sides of the iron (33); a membrane disc (5) is also provided at the bottom end of the telescopic rod (4), and a through hole (51) is opened on the bottom surface of the side wall of the membrane disc (5); the membrane disc (5) is a hollow shell structure floating in the dish (1), and a protruding key-shaped block (52) is also provided on the top of the membrane disc (5) toward the center of the side wall of the telescopic rod (4); a concave key-shaped pit (42) is also provided at the bottom end of the telescopic rod (4), and the telescopic rod (4) is engaged with the key-shaped block (52) through the key-shaped pit (42) to fix the membrane disc (5); the controller is used to adjust the operation of the processing equipment; By means of a through hole (51) arranged on the bottom surface of the side wall of the membrane disc (5), in conjunction with the hollow shell structure of the membrane disc (5), the membrane disc (5) is floated on the liquid surface of the dish (1); the key-shaped pit (42) arranged at the bottom end of the telescopic rod (4) is engaged with the key-shaped block (52) protruding from the top of the membrane disc (5) through the action of the tension spring (32) between the telescopic rod (4); the bottom surface of the membrane disc (5) is then pressed below the liquid surface of the dish (1) through the telescopic rod (4); and the liquid surface in the dish (1) is controlled to be maintained at the through hole (51) of the membrane disc (5). ) within a height range, the solution in the dish (1) flows into the membrane dish (5) through the through opening (51), then the motor (31) on the truss (3) is started to move along the rack (2), thereby driving the solution in the dish (1) to flow relative to the surface of the membrane dish (5), so that the solution extracted on the membrane dish (5) tends to be evenly distributed, then the telescopic rod (4) is retracted, so that the membrane dish (5) is located above the liquid surface of the dish (1), and the self-leveling effect of the solution on the membrane dish (5) is utilized to discharge the excess solution and finally form a thin film; The bottom surface of the through opening (51) of the membrane disc (5) is provided with an oblique angle (511), and the top edge of the inner wall of the membrane disc (5) is provided with a cut angle (53); the bottom surface of the through opening (51) is lower than the bottom surface of the membrane disc (5); By providing an oblique angle (511) on the bottom surface of the through-hole (51), the solution remaining in the through-hole (51) during the self-leveling process flows out, and the through-hole (51) is lower than the bottom surface of the membrane disc (5), so that the edge of the solution remaining on the bottom surface of the membrane disc (5) forms a straight cut; The edge of the membrane disk (5) below the through opening (51) is also fixedly connected with a fin (54), and the fin (54) is perpendicular to the axial direction of the truss (3); The truss (3) slidably mounted on the rack (2) drives the membrane disc (5) to move in the solution of the dish (1) via the telescopic rod (4); when the membrane disc (5) reciprocating in the dish (1) causes the solution therein to flow around, the fins (54) perpendicular to the truss (3) can guide the movement of the membrane disc (5) in the dish (1), thereby reducing the interference and shaking of the solution forming the flow in the dish (1) on the movement of the membrane disc (5), and maintaining the engagement stability between the key block (52) and the key pit (42); A hinged column plate (43) is provided at the bottom end of the telescopic rod (4); the key-shaped pit (42) is provided on the surface of the column plate (43) facing the membrane plate (5), and a rounded corner (44) is provided on the edge of the key-shaped pit (42) on the surface of the column plate (43); under the action of gravity, the column plate (43) makes the posture of the key-shaped pit (42) match that of the key-shaped block (52); By means of a column plate (43) hingedly arranged at the bottom of the telescopic rod (4), a rounded corner (44) provided on the surface of the column plate (43) at the edge of the key-shaped pit (42), and the posture of the column plate (43) itself under the action of gravity, the telescopic rod (4) on the truss rod (3) can utilize the rounded corner (44) of the key-shaped pit (42) and the rotatable column plate (43) to enhance the space between the key-shaped pit (42) and the key-shaped block (52) when the telescopic rod (4) on the truss rod (3) approaches the membrane plate (5). The convenience of snapping is achieved by hingedly connecting the column plate (43) on the telescopic rod (4) and cooperating with the key block (52) at the center of the side wall of the membrane plate (5). When the membrane plate (5) is lifted above the dish plate (1) by the telescopic rod (4), if the solution extracted on the membrane plate (5) is unevenly distributed, the membrane plate (5) is tilted through the hinge, and the side with excessive solution on the membrane plate (5) flows out, thereby further maintaining the levelness of the solution on the bottom surface of the membrane plate (5); The surface of the truss (3) is provided with a groove rail (34), and a tension spring (32) fixedly connected between the telescopic rods (4) is installed in the groove rail (34); the top end of the telescopic rod (4) is slidably installed in the groove rail (34) of the truss (3) through a groove block (45); A groove rail (34) is provided on the truss (3) for accommodating the tension spring (32) fixedly connected between the telescopic rods (4), so that the axial torsion of the tension spring (32) during the telescopic process is limited by the groove block (45) slidably installed in the groove rail (34), thereby preventing the tension spring (32) from causing relative deflection between the telescopic rods (4) sliding on the truss (3) during the telescopic process, making it difficult for the key-shaped pit (42) at the bottom of the telescopic rod (4) to be simultaneously engaged with the key-shaped blocks (52) on both sides of the membrane disk (5), thereby ensuring smooth engagement between the telescopic rod (4) and the membrane disk (5).

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