A nanofiltration membrane preparation device and production process

Abstract

The application belongs to the technical field of nanofiltration membrane preparation, and particularly relates to a nanofiltration membrane preparation device and production process. The surface of the nanofiltration membrane is prone to unevenness or lines during preparation, which affects the preparation quality of the nanofiltration membrane. The following scheme is proposed, which comprises a preparation base, two mounting vertical rods on the preparation base, a same fixing plate frame arranged on the two mounting vertical rods, and two fixing supports. The nanofiltration membrane preparation device and production process disclosed by the application has the effect of improving the preparation quality of the nanofiltration membrane. The device adopts a preparation method of combining two substrates during nanofiltration membrane preparation, which can ensure the flatness of the two sides of the prepared nanofiltration membrane, so as to avoid unevenness or lines. In addition, the two substrates can be edge sealed during the combining and forming process, so as to avoid changes in the gap between the substrates and affect the thickness uniformity of the finished product, and further improve the use effect of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of nanofiltration membrane preparation, and in particular to a nanofiltration membrane preparation device and a production process. Background Art

[0002] Nanofiltration membranes: With pore sizes exceeding 1 nm, typically 1-2 nm, are functional semipermeable membranes that allow the permeation of solvent molecules, certain low-molecular-weight solutes, or low-valent ions. They are a unique and promising type of separation membrane, named for their ability to retain nanometer-sized substances. They are used to remove organic matter and color from surface water, remove hardness from groundwater, partially remove soluble salts, concentrate fruit juice, and separate useful substances from pharmaceuticals.

[0003] Nanofiltration membranes are a highly efficient, energy-efficient, and uniquely selective separation technology. They bridge the gap between ultrafiltration and reverse osmosis, and are particularly well-suited for applications requiring the selective removal of multivalent ions and small organic molecules while retaining some monovalent ions and minerals. They are playing an increasingly important role in water treatment, food and beverage, biopharmaceuticals, and other fields.

[0004] When preparing existing nanofiltration membranes, the membrane liquid needs to be placed on a substrate. The membrane liquid is generally placed on the substrate by spraying or direct coating. However, when the above methods are used for preparation, the surface of the nanofiltration membrane is prone to unevenness or texture, which affects the preparation quality of the nanofiltration membrane. Summary of the Invention

[0005] The present invention discloses a nanofiltration membrane preparation device and a production process, aiming to solve the technical problem in the background art that the surface of the nanofiltration membrane is prone to unevenness or texture during preparation, thereby affecting the preparation quality of the nanofiltration membrane.

[0006] The present invention provides a nanofiltration membrane preparation device comprising:

[0007] A base is prepared, wherein two mounting poles are provided on the base, and a same fixing plate frame is provided on the two mounting poles;

[0008] Two fixed supports, both of which are arranged on the top of the preparation base, and both of the fixed supports are provided with two conveying rollers;

[0009] Two conveyor belts, each of which is provided on four conveyor rollers. A drive motor is provided on one side outer wall of each of the two fixed brackets. The output shafts of the two drive motors are connected to one end of two of the conveyor rollers through a coupling.

[0010] A membrane liquid tank is arranged on the top of the preparation base;

[0011] The flat film preparation unit is arranged on the two mounting vertical rods, and is used for flat preparation of nanofiltration membranes and ensuring uniformity of the thickness of the nanofiltration membranes in the merging forming process.

[0012] The film preparation cleaning module is arranged on the fixed plate frame and the membrane liquid tank, and is used for cleaning the film preparation substrate to avoid dust and impurities from polluting the membrane liquid.

[0013] In a preferred scheme, the flat film preparation unit comprises:

[0014] The two electric telescopic rods are respectively arranged on the two mounting vertical rods, and the output ends of the two electric telescopic rods are fixedly connected with the mounting bases.

[0015] The two mounting rods are respectively arranged on the two mounting bases, and the two mounting bases are respectively provided with the servo motors.

[0016] The two merging rod frames are respectively arranged on the two mounting rods.

[0017] In a preferred scheme, the flat film preparation unit further comprises:

[0018] The two overturning motors are respectively arranged on the two merging rod frames, and the output shafts of the two overturning motors are respectively connected with the pickup frame seats through the shaft couplings.

[0019] The plurality of elastic inner groove pieces are respectively arranged on the two pickup frame seats, and the plurality of elastic inner groove pieces respectively pass through the four mounting ports.

[0020] The two mounting supports are respectively arranged on the two pickup frame seats.

[0021] In a preferred scheme, the flat film preparation unit further comprises:

[0022] The four general motors are respectively arranged on the two mounting supports, and the output shafts of the four general motors are respectively connected with the connecting frames through the shaft couplings.

[0023] The four fixed suction cups are respectively arranged on the output ends of the four electric rod pieces.

[0024] Two air pump bodies, two air pump bodies are arranged on two mounting supports respectively, the input end of two air pump bodies is fixedly connected with two connecting pipes, the input end of four connecting pipes is arranged on four fixed suction cups respectively.

[0025] In a preferred scheme, the flat film forming unit further comprises:

[0026] Two connecting supports, two connecting supports are arranged on two mounting vertical rods respectively, a same rubber roller frame is arranged on two connecting supports, two mounting shaft rods are arranged on the rubber roller frame;

[0027] Two stepping motors, two stepping motors are arranged on the rubber roller frame, the output shaft of two stepping motors is connected with one end of two mounting shaft rods through a shaft coupling respectively, an edge sealing rubber roller is arranged on two mounting shaft rods;

[0028] An ejection guide rail, the ejection guide rail is arranged on the rubber roller frame, two movable openings are formed in the ejection guide rail.

[0029] In a preferred scheme, the flat film forming unit further comprises:

[0030] Two opening and closing plates, two opening and closing plates are arranged in the inside of two movable openings, two return springs are arranged on the opposite side outer walls of two opening and closing plates, a cutting tool is arranged on the side outer wall of two opening and closing plates;

[0031] A power motor, the power motor is arranged on the rubber roller frame, an opening and closing cam is connected with the output shaft of the power motor through a shaft coupling, the opening and closing cam is located between two opening and closing plates;

[0032] Two micro adhesion elements, two micro adhesion elements are arranged on two cutting tools respectively.

[0033] In a preferred scheme, the film forming cleaning module comprises:

[0034] An electric push rod, the electric push rod is arranged on the fixed plate frame, a fixed rod frame is fixedly connected with the output end of the electric push rod;

[0035] Two film coating bins, one of two film coating bins is arranged on one end of the fixed rod frame, the outer wall of the other film coating bin is provided with a support element;

[0036] A conveying pipe, the conveying pipe is arranged on the film liquid tank, a film forming pump is arranged on the output end of the conveying pipe.

[0037] In a preferred scheme, the film forming cleaning module further comprises:

[0038] The cleaning gas pump is provided with a U-shaped through pipe at the output end of the cleaning gas pump and the output end of the film making pump, two output ends of one of the U-shaped through pipes are connected with the interiors of two film coating bins respectively, and the input end of the cleaning gas pump is provided with an air purifier;

[0039] Two cleaning seats are provided with air through holes, one of the cleaning seats is arranged at one end of the support piece, and the two output ends of the other U-shaped through pipe are connected with the interiors of two air through holes respectively.

[0040] A double-shaft motor is arranged on the two cleaning seats, and two output shafts of the double-shaft motor are connected with driving gears through couplings.

[0041] In a preferred scheme, the film making and cleaning module further comprises:

[0042] Four rotating sleeve frames are arranged on the two cleaning seats respectively, ball grooves are arranged on one side of the outer wall of each of the four rotating sleeve frames, and a plurality of ball pieces are arranged in the interiors of the four ball grooves.

[0043] Four gear rings are arranged on the four rotating sleeve frames respectively, the four gear rings are engaged with the two driving gears respectively, and cleaning rollers are arranged in the interiors of the four rotating sleeve frames.

[0044] A nanofiltration membrane preparation process uses the nanofiltration membrane preparation device described above, and comprises the following steps:

[0045] Step one, the substrate is arranged on the conveying belt, and the conveying roller is driven by the driving motor to run with the conveying belt to convey the substrate;

[0046] Step two, the substrate is picked up by the flat film making unit, and is flipped and adjusted so that two substrates correspond to each other;

[0047] Step three, the film making and cleaning module is operated to clean the substrate in cooperation with the flat film making unit, and the film liquid is arranged on the substrate after cleaning;

[0048] Step four, the two substrates are combined and close to each other by the flat film making unit for preparation, and then the combined substrate is edge sealed to complete the preparation.

[0049] As can be seen from the above, the nanofiltration membrane preparation device provided by the application has the effect of improving the nanofiltration membrane preparation quality, and the device uses the method of combining two substrates for preparation when preparing the nanofiltration membrane, which can ensure the flatness of the two sides of the nanofiltration membrane after preparation, so as to avoid the concave-convex or line conditions, and at the same time, the two substrates can be edge sealed during the combined forming process, so as to avoid the change of the substrate gap affecting the thickness uniformity of the finished product, and further improve the use effect of the device. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 The overall structure schematic diagram of a nanofiltration membrane preparation device is proposed in the present application;

[0051] Figure 2 The overall side view structure schematic diagram of a nanofiltration membrane preparation device is proposed in the present application;

[0052] Figure 3 The driving motor and mounting vertical rod combination structure schematic diagram of a nanofiltration membrane preparation device is proposed in the present application;

[0053] Figure 4 The flat membrane preparation unit structure schematic diagram of a nanofiltration membrane preparation device is proposed in the present application;

[0054] Figure 5 The fixed rod frame and pickup frame seat combination structure schematic diagram of a nanofiltration membrane preparation device is proposed in the present application;

[0055] Figure 6 The pickup frame seat cross-sectional structure schematic diagram of a nanofiltration membrane preparation device is proposed in the present application;

[0056] Figure 7 The rubber roller frame cross-sectional structure schematic diagram of a nanofiltration membrane preparation device is proposed in the present application;

[0057] Figure 8 The opening and closing plate and cutting tool combination structure schematic diagram of a nanofiltration membrane preparation device is proposed in the present application;

[0058] Figure 9 The membrane preparation and cleaning module structure schematic diagram of a nanofiltration membrane preparation device is proposed in the present application;

[0059] Figure 10 The cleaning seat and rotating sleeve frame combination structure schematic diagram of a nanofiltration membrane preparation device is proposed in the present application.

[0060] In the figure: 1, preparation base; 2, fixed support; 3, conveying belt; 4, film preparation cleaning module; 401, conveying pipe; 402, electric push rod; 403, fixed rod frame; 404, film coating bin; 405, film preparation pump; 406, U-shaped pipe; 407, support piece; 408, cleaning seat; 409, driving gear; 410, air purifier; 411, cleaning air pump; 412, air through hole; 413, gear ring; 414, double-shaft motor; 415, rotating sleeve frame; 416, ball piece; 417, cleaning roller; 5, film liquid tank; 6, flat film preparation unit; 601, electric telescopic rod; 602, rubber roller frame; 603, pickup frame seat; 604, overturning motor; 605, mounting base; 606, servo motor; 607, mold outlet guide rail; 608, mounting rod piece; 609, merging rod frame; 610, mounting support; 611, connecting frame; 612, elastic inner groove piece; 613, general motor; 614, air pump body; 615, connecting pipe; 616, electric rod piece; 617, fixed suction disc; 618, edge sealing rubber roller; 619, mounting shaft rod; 620, stepping motor; 621, power motor; 622, connecting support; 623, back-pulling spring; 624, opening and closing plate; 625, opening and closing cam; 626, cutting tool; 627, slightly sticky piece; 7, conveying roller; 8, driving motor; 9, mounting vertical rod; 10, fixed plate frame. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0062] The nanofiltration membrane preparation device disclosed by the present application is mainly applied to the scene that the surface of the nanofiltration membrane is prone to appear uneven or lines during preparation, thereby affecting the preparation quality of the nanofiltration membrane.

[0063] Reference Figures 1-10 A nanofiltration membrane preparation device, comprising:

[0064] The preparation base 1 is provided with two mounting vertical rods 9, and the two mounting vertical rods 9 are provided with the same fixed plate frame 10.

[0065] The two fixed supports 2 are arranged on the top of the preparation base 1, and the two fixed supports 2 are provided with two conveying rollers 7.

[0066] The two conveying belts 3 are arranged on the four conveying rollers 7, respectively, and the side outer wall of each of the two fixed supports 2 is provided with a driving motor 8, and the output shaft of each of the two driving motors 8 is connected with one end of two of the conveying rollers 7 through a shaft coupling.

[0067] A film liquid tank 5 is arranged on the top of the preparation base 1.

[0068] A flat film preparation unit 6 is arranged on the two mounting vertical rods 9, and is used for flat preparation of the nanofiltration membrane and ensuring uniformity of the thickness of the nanofiltration membrane in the combined molding process.

[0069] A film preparation cleaning module 4 is arranged on the fixed plate frame 10 and the film liquid tank 5, and is used for cleaning the film preparation substrate to avoid dust and impurities from polluting the film liquid.

[0070] Referring to Figures 2-8 In a preferred embodiment, the flat film preparation unit 6 comprises:

[0071] Two electric telescopic rods 601 are arranged on the two mounting vertical rods 9, and the output ends of the two electric telescopic rods 601 are fixedly connected with mounting bases 605, and the two mounting bases 605 are arranged on the two mounting vertical rods 9.

[0072] Two mounting rod members 608 are arranged on the two mounting bases 605, and the two mounting bases 605 are provided with servo motors 606, and the output shafts of the two servo motors 606 are connected with one ends of the two mounting rod members 608 through couplings.

[0073] Two combined rod frames 609 are arranged on the two mounting rod members 608.

[0074] In the present application, the flat film preparation unit 6 further comprises:

[0075] Two overturning motors 604 are arranged on the two combined rod frames 609, and the output shafts of the two overturning motors 604 are connected with pickup frame seats 603 through couplings, and the two pickup frame seats 603 are provided with two mounting ports.

[0076] A plurality of elastic inner groove members 612 are arranged on the two pickup frame seats 603, and the plurality of elastic inner groove members 612 pass through the four mounting ports.

[0077] Two mounting supports 610 are arranged on the two pickup frame seats 603.

[0078] In the present application, the flat film preparation unit 6 further comprises:

[0079] Four universal motors 613 are arranged on the two mounting brackets 610 respectively, the output shafts of the four universal motors 613 are connected with the connecting frames 611 through couplings, and the inner walls of the four connecting frames 611 are fixedly connected with the electric rod members 616;

[0080] Four fixed suction cups 617 are arranged at the output ends of the four electric rod members 616 respectively.

[0081] Two air pump bodies 614 are arranged on the two mounting brackets 610 respectively, and the input ends of the two air pump bodies 614 are fixedly connected with the two connecting pipes 615, and the input ends of the four connecting pipes 615 are arranged on the four fixed suction cups 617 respectively.

[0082] In the application, the flat film forming unit 6 further comprises:

[0083] Two connecting brackets 622 are arranged on the two mounting vertical rods 9 respectively, and the same rubber roller frame 602 is arranged on the two connecting brackets 622, and the two mounting shaft rods 619 are arranged on the rubber roller frame 602.

[0084] Two stepping motors 620 are arranged on the rubber roller frame 602, and the output shafts of the two stepping motors 620 are connected with one ends of the two mounting shaft rods 619 through couplings, and the edge sealing rubber rollers 618 are arranged on the two mounting shaft rods 619.

[0085] A mold ejection guide rail 607 is arranged on the rubber roller frame 602, and two movable openings are formed in the mold ejection guide rail 607.

[0086] In the application, the flat film forming unit 6 further comprises:

[0087] Two opening and closing plates 624 are arranged in the two movable openings, two back pulling springs 623 are arranged on the opposite side outer walls of the two opening and closing plates 624, and cutting tools 626 are arranged on the side outer walls of the two opening and closing plates 624.

[0088] A power motor 621 is arranged on the rubber roller frame 602, and an opening and closing cam 625 is connected with the output shaft of the power motor 621 through a coupling, and the opening and closing cam 625 is located between the two opening and closing plates 624.

[0089] Two micro adhesion members 627 are arranged on the two cutting tools 626 respectively.

[0090] Specifically, the substrate is picked up, at this time the combined lever frame 609 is in a horizontal state, when the substrate moves to a certain position, the electric rod 616 and the air pump body 614 operate to drive the fixed suction cup 617 to adsorb and fix the substrate, and reset after adsorption, at this time the substrate moves to the inside of the elastic inner groove 612, the fixed suction cup 617 cancels the adsorption and fixation, so as to cooperate with the plurality of elastic inner grooves 612 to self-adjust the position of the substrate, so that it is at the center, then the electric telescopic rod 601 operates to adjust the height of the pickup frame seat 603, and after adjusting to the appropriate height, the overturning motor 604 is started, which can drive the pickup frame seat 603 and the substrate thereon to overturn, and then the servo motor 606 operates, which drives the mounting rod 608 and the combined lever frame 609 to rotate, and makes each two substrates correspondingly arranged;

[0091] When the film liquid is set on the substrate, the electric rod 616 and the fixed suction cup 617 cooperate to make each two corresponding substrates close to each other, so that the film liquid on them is combined to prepare a complete nanofiltration membrane, then the electric telescopic rod 601 drives the mounting base 605 to descend, and then drives the substrate to descend, the substrate is set on the mold outlet guide rail 607 before, at this time the power motor 621 operates, the electric opening and closing cam 625 rotates to make the return spring 623 deform, and make the two opening and closing plates 624 move away, and then drive the cutting tool 626 and the micro adhesive 627 to move, so that the adhesive tape of the edge sealing rubber roller 618 is adhered to the two substrates through the micro adhesive 627, and then reset, at this time the general motor 613 and the stepping motor 620 are started to make the substrate and the edge sealing rubber roller 618 rotate until the outer wall of the substrate is completely provided with the adhesive tape of the edge sealing rubber roller 618, at this time the power motor 621 operates again, and the cutting tool 626 and the adhesive tape of the edge sealing rubber roller 618 are cut off, and then the substrate is conveyed out through the mold outlet guide rail 607;

[0092] In a specific application scenario, the flat membrane preparation unit 6 is suitable for nanofiltration membrane preparation link, that is, the flat membrane preparation unit 6 is prepared by the way of combining two substrates, so that one side of the substrate with uneven or texture corresponds, so that after combining, the flatness of both sides of the nanofiltration membrane prepared is ensured, so as to avoid the uneven or texture situation, thereby increasing the preparation effect and preparation quality of the nanofiltration membrane preparation, and at the same time, the two substrates can be edge sealed during the combining and forming process, so that the gap distance between the two substrates will not change, so as to avoid the change of the substrate gap affecting the thickness uniformity of the finished product, and further improve the use effect of the device;

[0093] It should be noted that the cutting tool 626 is used to cut the adhesive tape of the edge sealing rubber roller 618 during use, and the micro adhesive 627 can micro-adhere the fracture of the adhesive tape of the edge sealing rubber roller 618 after cutting, so as to facilitate subsequent edge sealing operation;

[0094] The elastic inner groove member 612 can be used to position the substrates at the center of the circle by cooperation between the plurality of elastic inner groove members 612, so as to improve the alignment accuracy of the two corresponding substrates.

[0095] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 9 and Figure 10 , in a preferred embodiment, the film manufacturing and cleaning module 4 comprises:

[0096] The electric push rod 402 is arranged on the fixed plate frame 10, and the output end of the electric push rod 402 is fixedly connected with the fixed rod frame 403.

[0097] Two film coating warehouses 404, one of which is arranged at one end of the fixed rod frame 403, and the outer wall of the other film coating warehouse 404 is provided with a support member 407.

[0098] The conveying pipe 401 is arranged on the film liquid tank 5, and the output end of the conveying pipe 401 is provided with a film manufacturing pump 405.

[0099] In the present application, the film manufacturing and cleaning module 4 further comprises:

[0100] The cleaning air pump 411 is arranged on the fixed rod frame 403, and the output end of the cleaning air pump 411 is provided with a U-shaped pipe 406.

[0101] Two cleaning seats 408 are arranged on the fixed rod frame 403, and the output end of the cleaning air pump 411 is provided with a U-shaped pipe 406.

[0102] The double-shaft motor 414 is arranged on the two cleaning seats 408, and the two output shafts of the double-shaft motor 414 are both connected with the driving gear 409 through the shaft coupling.

[0103] In the present application, the film manufacturing and cleaning module 4 further comprises:

[0104] Four rotating sleeve frames 415 are arranged on the two cleaning seats 408, and the outer wall of one side of the four rotating sleeve frames 415 is provided with a ball groove.

[0105] Four gear rings 413 are arranged on the four rotating sleeve frames 415 respectively, and the four gear rings 413 are respectively engaged with the two drive gears 409. The interiors of the four rotating sleeve frames 415 are respectively provided with cleaning rollers 417.

[0106] Specifically, before film preparation, the flat film preparation unit 6 adjusts the height of the substrate to move to the height of the cleaning seat 408, and pushes the substrate out of the elastic inner groove member 612 through the electric rod member 616 and the fixed suction cup 617. At this time, the substrate is in contact with the ball member 416. Then the double-shaft motor 414 operates to drive the drive gear 409 to rotate, thereby driving the gear ring 413 to rotate the rotating sleeve frame 415 and the cleaning roller 417 to clean the surface of the substrate. At the same time, the cleaning air pump 411 operates to suck air into the interior of the air purifier 410 to obtain clean gas, which is delivered to the air hole 412 through the U-shaped pipe 406, thereby cooperating with the cleaning roller 417 to perform cleaning work until the cleaning is completed.

[0107] Then the electric push rod 402 moves to move the film coating bin 404 to the substrate. At this time, the preparation pump operates to deliver the membrane liquid in the membrane liquid tank 5 to the interior of the film coating bin 404 through the delivery pipe 401, and then the film coating bin 404 is arranged on the substrate for the preparation of the nanofiltration membrane.

[0108] In a specific application scenario, the film preparation and cleaning module 4 is suitable for the film preparation substrate cleaning and film liquid spraying link, that is, the film preparation and cleaning module 4 can spray the film liquid onto the substrate to prepare the nanofiltration membrane. At the same time, when the film is prepared, the film preparation and cleaning module 4 can clean the film-coated surface of the substrate to ensure the cleanliness of the film-coated surface, thereby reducing the adverse effects of dust and impurities on the preparation quality during film preparation, and further increasing the use effect of the device.

[0109] A nanofiltration membrane preparation process using the nanofiltration membrane preparation device as described above, comprising the following steps:

[0110] Step one, arrange the substrate on the conveying belt 3, and drive the conveying roller 7 and the conveying belt 3 to operate by the driving motor 8 to convey the substrate.

[0111] Step two, substrate pickup, at this time the combined rod frame 609 is in a horizontal state, when the substrate moves to a certain position, the electric rod 616 and the air pump body 614 operate to drive the fixed suction cup 617 to adsorb and fix the substrate, and reset after adsorption, at this time the substrate moves to the inside of the elastic inner groove 612, the fixed suction cup 617 cancels the adsorption and fixation, so as to cooperate with the plurality of elastic inner grooves 612 to adjust the position of the substrate, so that it is at the center, then the electric telescopic rod 601 operates to adjust the height of the pickup frame seat 603, and after adjusting to the appropriate height, the overturning motor 604 is started, which can drive the pickup frame seat 603 and the substrate thereon to overturn, then the servo motor 606 operates, which drives the mounting rod 608 and the combined rod frame 609 to rotate, and makes two substrates correspondingly arranged;

[0112] Step three, before film preparation, the flat film preparation unit 6 adjusts the height of the substrate to move to the cleaning seat 408 height, and pushes the substrate out of the elastic inner groove 612 through the electric rod 616 and the fixed suction cup 617, at this time the substrate contacts the ball 416, then the double-shaft motor 414 operates to drive the driving gear 409 to rotate, thereby making the gear ring 413 drive the rotating sleeve frame 415 and the cleaning roller 417 to rotate to clean the surface of the substrate, at the same time the cleaning air pump 411 operates to suck air into the air purifier 410 to obtain clean gas, and then through the U-shaped pipe 406 to the air hole 412, so as to cooperate with the cleaning roller 417 to clean until the cleaning is completed;

[0113] Then the electric push rod 402 moves, so that the film coating bin 404 moves to the substrate, at this time the preparation pump operates to transport the membrane liquid in the membrane liquid tank 5 to the inside of the film coating bin 404 through the delivery pipe 401, and then sets on the substrate through the film coating bin 404, for the preparation of nanofiltration membrane;

[0114] Step four, when the film liquid is set on the substrate, the electric rod 616 cooperates with the fixed suction cup 617 to make the corresponding substrate close to each other, so as to combine the film liquid on it to prepare a complete nanofiltration membrane, then the electric telescopic rod 601 drives the installation base 605 to descend, and then drives the substrate to descend, the substrate is set on the mold outlet guide rail 607 before, at this time the power motor 621 runs, the electric opening and closing cam 625 rotates, so that the back pull spring 623 deforms, and the two opening and closing plates 624 move away, and then drive the cutting tool 626 and the micro adhesive 627 to move, so as to adhere the adhesive tape of the edge sealing glue roller 618 to the two substrates through the micro adhesive 627, and then reset, at this time the general motor 613 and the stepping motor 620 are started, so that the substrate and the edge sealing glue roller 618 rotate until the outer wall of the substrate is completely provided with the adhesive tape of the edge sealing glue roller 618, at this time the power motor 621 runs again, and the cutting tool 626 and the adhesive tape of the edge sealing glue roller 618 are cut off, then the substrate is conveyed out through the mold outlet guide rail 607, in the process, the film reaction of the film liquid in the gap between the substrates is completed, so as to complete the preparation operation.

[0115] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art in the technical range disclosed by the present application, according to the technical scheme and the inventive concept of the present application, equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A nanofiltration membrane preparation device, characterized in that: include: A base is prepared, wherein two mounting poles are provided on the base, and a same fixing plate frame is provided on the two mounting poles; Two fixed supports, both of which are arranged on the top of the preparation base, and both of the fixed supports are provided with two conveying rollers; Two conveyor belts, each of which is provided on four conveyor rollers. A drive motor is provided on one side outer wall of each of the two fixed brackets. The output shafts of the two drive motors are connected to one end of two of the conveyor rollers through a coupling. A membrane liquid tank is arranged on the top of the preparation base; The flattening membrane making unit is arranged on two mounting poles and is used to flatten and prepare the nanofiltration membrane and ensure the uniformity of the thickness of the nanofiltration membrane during the merging and molding process; The film cleaning module is arranged on the fixed plate frame and the film liquid tank. The film cleaning module is used to clean the film substrate to prevent dust and impurities from contaminating the film liquid. The flat film unit includes: Two electric telescopic rods, the two electric telescopic rods are respectively arranged on two mounting poles, the output ends of the two electric telescopic rods are fixedly connected to the mounting bases, and the two mounting bases are respectively arranged on the two mounting poles; Two mounting rods, the two mounting rods are respectively arranged on two mounting bases, and the two mounting bases are both provided with servo motors, and the output shafts of the two servo motors are respectively connected to one end of the two mounting rods through couplings; Two combined rod brackets are respectively arranged on two mounting rods.

2. A nanofiltration membrane preparation device according to claim 1, characterized in that: The flat film making unit also includes: Two flip motors, the two flip motors are respectively arranged on the two merging rod frames, the output shafts of the two flip motors are connected to the picking frame seat through a coupling, and the two picking frame seats are provided with two mounting ports; A plurality of elastic inner groove members, each of which is disposed on the two picking frame seats, and each of which passes through the four mounting openings; Two mounting brackets are respectively arranged on the two picking frame seats.

3. A nanofiltration membrane preparation device according to claim 2, characterized in that: The flat film making unit also includes: Four universal motors, each of which is mounted on two mounting brackets. The output shafts of the four universal motors are connected to a connecting frame via a coupling, and the inner walls of the four connecting frames are fixedly connected to electric rods. Four fixed suction cups, which are respectively arranged at the output ends of the four electric rods; Two air pump bodies are respectively arranged on two mounting brackets. The input ends of the two air pump bodies are fixedly connected to two connecting pipes, and the input ends of the four connecting pipes are respectively arranged on four fixed suction cups.

4. A nanofiltration membrane preparation device according to claim 3, characterized in that: The flat film making unit also includes: Two connecting brackets, the two connecting brackets are respectively arranged on the two mounting uprights, the two connecting brackets are provided with a same rubber roller frame, and the rubber roller frame is provided with two mounting shaft rods; Two stepper motors, both of which are arranged on the rubber roller frame, and the output shafts of the two stepper motors are respectively connected to one end of two mounting shafts through couplings, and the two mounting shafts are each provided with an edge-sealing rubber roller; The demoulding guide rail is arranged on the rubber roller frame and has two movable openings.

5. A nanofiltration membrane preparation device according to claim 4, characterized in that: The flat film making unit also includes: Two opening and closing plates, the two opening and closing plates are arranged inside the two movable openings, two pull-back springs are arranged on the outer walls on opposite sides of the two opening and closing plates, and a cutting tool is arranged on the outer walls on one side of the two opening and closing plates; A power motor is provided on the rubber roller frame, wherein the output shaft of the power motor is connected to an opening and closing cam via a coupling, and the opening and closing cam is located between the two opening and closing plates; Two micro-adhesive parts are respectively arranged on the two cutting tools.

6. A nanofiltration membrane preparation device according to claim 5, characterized in that: The film making and cleaning module comprises: An electric push rod is arranged on a fixed plate frame, and an output end of the electric push rod is fixedly connected to the fixed rod frame; Two coating bins, one of which is arranged at one end of a fixed rod frame, and the outer wall of the other coating bin is provided with a bracket; The delivery pipe is arranged on the membrane liquid tank, and a membrane making pump is arranged at the output end of the delivery pipe.

7. A nanofiltration membrane preparation device according to claim 6, characterized in that: The film making and cleaning module also includes: A cleaning air pump, the output end of the cleaning air pump and the output end of the film-making pump are both provided with a U-shaped through-tube, the two output ends of one of the U-shaped through-tubes are respectively connected to the interior of the two film-coating bins, and the input end of the cleaning air pump is provided with an air purifier; Two cleaning seats, both of which are provided with air holes, one of which is provided at one end of the bracket, and the two output ends of the other U-shaped through pipe are respectively connected to the interiors of the two air holes; A dual-shaft motor is provided on two cleaning seats, and both output shafts of the dual-shaft motor are connected to a driving gear through a coupling.

8. A nanofiltration membrane preparation device according to claim 7, characterized in that: The film making and cleaning module also includes: Four rotating sleeves, the four rotating sleeves are respectively arranged on the two cleaning seats, the outer walls of one side of the four rotating sleeves are each provided with a ball groove, and a plurality of ball members are arranged inside the four ball grooves; Four gear rings are respectively arranged on four rotating sleeves, the four gear rings are respectively engaged with two driving gears, and cleaning rollers are arranged inside the four rotating sleeves.

9. A nanofiltration membrane preparation process, using the nanofiltration membrane preparation device according to claim 8, characterized in that: The steps include: Step 1: Place the substrate on the conveyor belt, and use the drive motor to drive the conveyor roller and the conveyor belt to transport the substrate; Step 2: Pick up the substrates. The flattening film forming unit picks up the substrates and flips them over so that the two substrates are aligned with each other. Step 3: The film forming and cleaning module operates to cooperate with the flat film forming unit to clean the substrate, and after cleaning, the film liquid is placed on the substrate; Step 4: The two substrates are brought together by the flattening film forming unit to prepare the substrate, and then the edges of the combined substrates are sealed to complete the preparation.

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