A continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm

Abstract

The present invention discloses a continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm, which belongs to the technical field of hydrogen production diaphragm, and comprises a PET film unwinding mechanism, a first coating mechanism, a PPS fabric unwinding mechanism and a second coating mechanism, wherein the PET film unwinding mechanism is used to unwind the PET film to the first coating mechanism and the second coating mechanism in sequence; the first coating mechanism is used to apply slurry to one side of the PET film; the PPS fabric unwinding mechanism is used to unwind the PPS fabric to the second coating mechanism, and when the PPS fabric unwinding mechanism unwinds the PPS fabric to the second coating mechanism, the PPS fabric is attached to the side of the PET film coated with slurry; the second coating mechanism is used to apply slurry to the side of the PPS fabric away from the PET film. The present application has the effect of improving the working efficiency of slurry coating on both sides of the PPS fabric.

Description

Technical Field

[0001] The invention relates to the field of hydrogen production membranes, and in particular to a continuous coating and laminating device for hydrogen production membranes by alkaline water electrolysis. Background Art

[0002] Alkaline water electrolysis hydrogen production diaphragm is a key material used in the alkaline water electrolysis hydrogen production process. Its main function is to separate the cathode and anode in the electrolyzer to prevent hydrogen and oxygen from mixing, while allowing ions in the electrolyte (such as potassium hydroxide or sodium hydroxide solution) to move freely.

[0003] Hydrogen production membrane materials usually use polyphenylene sulfide (PPS) fabrics, and slurry is applied on both sides of the PPS fabric to improve its hydrophilicity, forming a composite membrane with a sandwich structure. Since both sides of the membrane, i.e., the PPS fabric, need to be coated with slurry, the coating of the PPS fabric in the prior art is usually performed by coating the slurry on one side of the PPS fabric and pre-evaporating it, and then coating the slurry on the other side of the PPS fabric and pre-evaporating it.

[0004] With regard to the above-mentioned prior art, during the process of coating the slurry on both sides of the PPS fabric, the slurry coating and pre-evaporation operations need to be performed on both sides of the PPS fabric in sequence, and the working efficiency of coating the slurry on both sides of the PPS fabric is low. Summary of the invention

[0005] In order to improve the work efficiency of slurry coating on both sides of PPS fabric, the present application provides a continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm.

[0006] The present application provides a continuous coating and laminating device for an alkaline water electrolysis hydrogen production diaphragm, which adopts the following technical solution:

[0007] A continuous coating and laminating device for an alkaline water electrolysis hydrogen production diaphragm comprises a PET film unwinding mechanism, a first coating mechanism, a PPS fabric unwinding mechanism and a second coating mechanism, wherein the PET film unwinding mechanism is used to unwind the PET film to the first coating mechanism and the second coating mechanism in sequence; the first coating mechanism is used to apply slurry to one side of the PET film; the PPS fabric unwinding mechanism is used to unwind the PPS fabric to the second coating mechanism, and when the PPS fabric unwinding mechanism unwinds the PPS fabric to the second coating mechanism, the PPS fabric is laminated to the side of the PET film coated with slurry; and the second coating mechanism is used to apply slurry to the side of the PPS fabric away from the PET film.

[0008] By adopting the above technical scheme, during the unwinding and coating process of the diaphragm, i.e., the PPS fabric, the PET film is first unwound and coated with the slurry through the first coating mechanism. Then, when the PET film is conveyed to the second coating mechanism, the PPS fabric is unwound and attached to the side of the PET film coated with the slurry. When the PPS fabric and the PET film are conveyed to the second coating mechanism together, the second coating mechanism coats the slurry on the side of the PPS fabric away from the PET film. Then, the slurry-coated PPS fabric and the PET film are conveyed to the pre-evaporation device for Pre-evaporation: During the coating process of the PPS fabric, the PET film supports the PPS fabric, which helps to ensure the coating stability of the slurry on the PET film when it is coated on the PPS fabric, and the slurry coating process on both sides of the PPS fabric can be carried out when the slurry is wet, so that after the slurry is coated on both sides of the PPS fabric, it is only necessary to feed the slurry into the pre-evaporation device for one pre-evaporation, and there is no need to coat and pre-evaporate the slurry on both sides of the PPS fabric in turn, which helps to improve the work efficiency of slurry coating on the diaphragm, i.e., both sides of the PPS fabric.

[0009] Optionally, the PET film unwinding mechanism includes a PET film unwinding rack, a PET film unwinding roller, a PET film tensioning roller and a PET film receiving roller. The PET film unwinding roller is rotatably installed on the PET film unwinding rack and is used to wind the PET film. There are multiple PET film tensioning rollers and they are all rotatably installed on the PET film unwinding rack. Each of the PET film tensioning rollers is used to tension the PET film fed into the coating assembly for slurry coating; the PET film receiving roller is rotatably installed on the first coating rack, and the PET film receiving roller is arranged between the first coating mechanism and the second coating mechanism and is used to carry and transport the side of the PET film away from the coating slurry.

[0010] By adopting the above technical scheme, each PET film tensioning roller plays a tensioning role when the PET film is coated with slurry, which is beneficial to ensure the stability of the PET film when the slurry is coated, and is beneficial to ensure the coating quality of the PET film; the setting of the PET film receiving roller facilitates to ensure the transportation stability of the PET film when it is fed to the second coating mechanism after the slurry is coated on one side.

[0011] Optionally, the first coating mechanism includes a first coating frame and a coating assembly, the coating assembly is arranged on the first coating frame and is used to coat the slurry on one side of the PET film, the coating assembly includes a coating roller, a storage box, a comma cutter head, a cutter head frame and a coating telescopic cylinder, the coating roller is rotatably mounted on the first coating frame, the storage box is mounted on the first coating frame and is used to accommodate the slurry, the comma cutter head is mounted on the cutter head frame and is located on the top of the storage box, and the coating telescopic cylinder is mounted on the first coating frame and is used to drive the cutter head frame to move toward or away from the coating roller.

[0012] By adopting the above technical solution, when the coating telescopic cylinder drives its own piston rod to move, the cutter head frame drives the comma cutter head to move in the direction close to or away from the coating roller, and the comma cutter head plays a limiting role when the slurry is coated on the PET film, thereby facilitating the uniformity and stability of the slurry when it is coated on the PET film. The setting of the coating telescopic cylinder facilitates the increase of the gap between the coating roller and the comma cutter head in the initial state, thereby facilitating the rapid placement of the PET film between the coating roller and the comma cutter head.

[0013] Optionally, the cutter head holder is rotatably mounted with a rotating screw, the rotating screw is passed through and threadedly engaged with one end of a piston rod of a coating telescopic cylinder, and the coating telescopic cylinder is provided with a locking component for fixing or loosening the rotating screw.

[0014] By adopting the above technical solution, after releasing the fixing of the rotating screw by the locking assembly, the rotating screw can be rotated to drive the cutter head frame and the comma cutter head to be adjusted along the axial direction of the coating telescopic cylinder, thereby facilitating the rapid adjustment of the thickness of the slurry coating on one side of the PET film or the PET films of different thicknesses, and has strong applicability.

[0015] Optionally, the locking assembly includes a fixed sleeve and a locking sleeve, the fixed sleeve is fixedly installed on one end of the piston rod of the coating telescopic cylinder, and the end of the fixed sleeve away from the piston rod of the coating telescopic cylinder is fixedly connected to a plurality of locking rods evenly distributed circumferentially around its own axis, each of the locking rods is elastic, and the locking sleeve is slidably fitted with the fixed sleeve, and the fixed sleeve is provided with a locking drive member for driving the locking sleeve to slide toward or away from the fixed sleeve, and when the locking sleeve moves in a direction close to the fixed sleeve, each of the locking rods moves in an axial direction close to the fixed sleeve.

[0016] By adopting the above technical solution, when the locking drive drives the locking rod to move in the axial direction close to the fixed sleeve, each locking rod can achieve a tight fixation on the position of the rotating screw by moving in the axial direction close to the fixed sleeve, thereby facilitating to fully ensure the stability of the position of the rotating screw after adjustment. By driving the locking rod to move in the axial direction away from the fixed sleeve, each locking rod can move in the axial direction away from the fixed sleeve under the action of its own elastic force, thereby releasing the lock on the rotating screw, which is convenient and quick.

[0017] Optionally, the locking drive component includes a driving spring and a locking screw, one end of the driving spring is connected to the fixed sleeve, and the other end is connected to the locking sleeve, the driving spring applies an elastic force to the locking sleeve to move in the direction away from the fixed sleeve, and the locking screw is threadedly engaged with the locking sleeve. When one end of the locking screw contacts the end of the fixed sleeve away from the locking sleeve, the locking sleeve is fixed to the fixed sleeve, and each locking rod presses against the rotating screw.

[0018] By adopting the above technical solution, when the locking screw is rotated so that the locking screw releases the interference with the fixed sleeve, the locking sleeve moves in the direction away from the fixed sleeve under the elastic force of the driving spring, thereby releasing the lock of the rotating screw by each locking rod. The locking of the rotating screw by each locking rod can be released without applying additional force to the locking sleeve, and the operation is simple.

[0019] Optionally, two material storage baffles and a material storage movement component are provided in the material storage box, and the two material storage baffles are slidably matched in the material storage box. The material storage movement component includes a bidirectional screw and a material storage guide rod. The bidirectional screw is horizontally rotatably installed on the material storage box, and the two ends of the bidirectional screw with opposite thread rotation directions are respectively passed through the two material storage baffles and matched with the two material storage baffle threads. The material storage guide rod and the bidirectional screw are arranged in parallel, and the material storage guide rod is passed through the two material storage baffles and slidably matched with the two material storage baffles.

[0020] By adopting the above technical scheme, when force is applied to rotate the bidirectional screw, the two storage baffles cooperate with the threads of the bidirectional screw and move towards or away from each other under the guidance of the storage guide rod, thereby limiting the slurry located between the two storage baffles, making it easy to adapt to PET films of different widths and sizes, and having strong applicability.

[0021] Optionally, the PPS fabric unwinding mechanism includes a PPS fabric unwinding frame, a PPS fabric unwinding roller, a PPS fabric tensioning roller and a PPS fabric receiving roller. The PPS fabric unwinding roller is rotatably mounted on the PPS fabric unwinding frame and is used to wind the PPS fabric. A plurality of PPS fabric tensioning rollers are provided and are rotatably mounted on the PPS fabric unwinding frame. The PPS fabric receiving roller is arranged close to the PET film receiving roller and is used to carry and transport one side of the PPS fabric.

[0022] By adopting the above technical scheme, each PPS fabric tensioning roller plays a role in tensioning the PPS fabric during transportation, which is beneficial to ensuring the stability of the PPS fabric during transportation; the PPS fabric receiving roller is arranged on the basis of facilitating the transportation stability of the PPS fabric when it is fed to the second coating mechanism, and also makes it difficult for the PPS fabric to penetrate the slurry due to too close adhesion with the PET film when it is bonded to the PET film and fed to the second coating mechanism for coating, which is beneficial to ensuring the coating quality of the PPS fabric.

[0023] Optionally, the first coating rack is provided with a rotation adjustment component, which includes an adjusting rocker arm, an adjusting push rod and an adjusting screw. The PPS fabric receiving roller is horizontally rotatably mounted on the adjusting rocker arm, one end of the adjusting push rod is in contact with the adjusting rocker arm, and the adjusting screw is rotatably mounted on the end of the adjusting push rod away from the adjusting rocker arm. The adjusting screw is horizontally penetrated and threadedly engaged with the first coating rack.

[0024] By adopting the above technical solution, when the adjusting screw is rotated, the adjusting screw drives the adjusting push rod to move horizontally toward or away from the adjusting rocker rod, so that the distance between the PPS fabric receiving roller and the PET film receiving roller is adjusted together, thereby facilitating adaptation to PET films and PPS fabrics of different thicknesses and sizes, and having strong applicability.

[0025] Optionally, the rotation adjustment component further includes an adjustment spring, one end of which is connected to the first coating frame and the other end of which is connected to the adjustment swing rod, and the adjustment spring applies an elastic force to the adjustment swing rod to move toward the direction of the adjustment push rod.

[0026] By adopting the above technical solution, the setting of the adjustment spring is conducive to further ensuring the stability of the position of the adjustment rocker and the PPS fabric receiving roller after adjustment, and also plays a certain buffering role during the transportation of the PPS fabric, making it less likely for the PPS fabric to be damaged due to excessive instantaneous tension during transportation, which is convenient for further ensuring the stability of the PPS fabric during transportation.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The slurry coating process on both sides of the PPS fabric can be carried out when the slurry is wet, so that after the slurry coating on both sides of the PPS fabric, it is only necessary to send the slurry into the pre-evaporation device for pre-evaporation once, without the need to coat and pre-evaporate the slurry on both sides of the PPS fabric in sequence, which is beneficial to improve the work efficiency of slurry coating on both sides of the diaphragm, i.e., the PPS fabric.

[0029] 2. By rotating the rotating screw, the rotating screw can drive the cutter head frame and the comma cutter head to adjust along the axial direction of the coating telescopic cylinder, so as to quickly adjust the thickness of the slurry coating on one side of the PPS fabric or the PPS fabrics of different thicknesses, and it has strong applicability.

[0030] 3. The setting of the PPS fabric receiving roller is not only to ensure the transportation stability of the PPS fabric when it is fed to the second coating mechanism, but also to prevent the slurry from penetrating due to the too close fit with the PET film when the PPS fabric is bonded to the PET film and fed to the second coating mechanism for coating, which is beneficial to ensure the coating quality of the PPS fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0032] Figure 2 It is a schematic diagram of the main structure of the PET film unwinding mechanism in the embodiment of the present application.

[0033] Figure 3 It is a schematic diagram of the main structure inside the storage box in the embodiment of the present application.

[0034] Figure 4 It is a schematic diagram of the connection relationship between the fixing sleeve and the locking sleeve in the embodiment of the present application.

[0035] Figure 5 yes Figure 4 A partial enlarged schematic diagram of part A.

[0036] Description of reference numerals:

[0037] 1. PET film unwinding rack; 2. PET film unwinding roller; 3. PET film tensioning roller; 4. PET film receiving roller; 5. Coating roller; 6. Coating motor; 7. Material storage box; 8. Comma blade; 9. Blade frame; 10. Coating telescopic cylinder; 11. Material storage baffle; 12. Bidirectional screw; 13. Material storage guide rod; 14. Material storage handle; 15. Rotating screw; 16. Coating guide rod; 17. Fixed sleeve; 18. Locking sleeve; 19. Locking Clamping rod; 20, pressing driving surface; 21, driving spring; 22, locking screw; 23, fixing ring; 24, PPS fabric unwinding rack; 25, PPS fabric unwinding roller; 26, PPS fabric tensioning roller; 27, PPS fabric receiving roller; 28, adjusting rocker; 29, adjusting push rod; 30, adjusting screw; 31, adjusting spring; 32, coating fixing plate; 33, second coating rack; 34, bonding receiving roller; 35, first coating rack. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-4 This application is described in further detail.

[0039] The present application discloses a continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm. Figure 1The continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm includes a PET film unwinding mechanism, a first coating mechanism, a PPS fabric unwinding mechanism and a second coating mechanism, wherein the PET film unwinding mechanism is used to unwind the PET film to the first coating mechanism and the second coating mechanism in sequence, and the first coating mechanism is used to apply slurry to one side of the PET film.

[0040] Reference Figure 1 and Figure 2 Specifically, the PET film unwinding mechanism includes a PET film unwinding frame 1, a PET film unwinding roller 2, a PET film tensioning roller 3 and a PET film receiving roller 4, wherein the PET film unwinding roller 2 is rotatably installed on the PET film unwinding frame 1 and is used to wind the PET film, and a plurality of PET film tensioning rollers 3 are provided and are all rotatably installed on the PET film unwinding frame 1. In the embodiment of the present application, the number of PET film tensioning rollers 3 is selected as three. When the PET film is transported, it is sequentially wound around each PET film tensioning roller 3, so that each PET film tensioning roller 3 plays a role in tensioning the PET film during transportation, thereby ensuring the stability of the PET film during transportation.

[0041] Continue to refer to Figure 1 and Figure 2 The first coating mechanism includes a first coating frame 35 and a coating assembly. The coating assembly is arranged on the first coating frame 35 and realizes slurry coating on one side of the PET film after the PET film is tensioned and conveyed by the PET film tensioning roller 3. Specifically, the coating assembly includes a coating roller 5, a coating motor 6, a storage box 7, a comma cutter head 8, a cutter head frame 9 and a coating telescopic cylinder 10. In the embodiment of the present application, the first coating frame 35 is fixedly installed on the PET film unwinding frame 1, and the coating roller 5 is horizontally rotatably installed on the first coating frame 35. The coating motor 6 is installed on the first coating frame 35 and drives the coating roller 5 to rotate through the reduction box to further ensure the stability of the PET film during transportation and coating.

[0042] Reference Figure 2 and Figure 3 The storage box 7 is installed on the first coating frame 35 and is used to accommodate the slurry. The top of the storage box 7 is open. The comma cutter head 8 is installed on the cutter head frame 9 and is located on the top of the storage box 7. When the PET film is transported, it passes through the storage box 7 and is located between the coating roller 5 and the comma cutter head 8. The coating roller 5 supports the side of the PET film that is not coated with slurry. The comma cutter head 8 plays a limiting role when the slurry is coated on the PPS fabric, thereby ensuring the uniform stability of the slurry when it is coated on the PPS fabric.

[0043] Reference Figure 3In order to ensure the stability of slurry coating on PET films of different widths, two material storage baffles 11 and a material storage movement assembly are arranged in the material storage box 7, wherein the material storage movement assembly includes a bidirectional screw 12 and a material storage guide rod 13, the bidirectional screw 12 is horizontally rotatably installed on the material storage box 7, the two material storage baffles 11 are arranged opposite to each other and are slidably matched with the material storage box 7, the two ends of the bidirectional screw 12 with opposite thread rotation directions are respectively passed through the two material storage baffles 11 and are threadedly matched with the two material storage baffles 11, and one end of the bidirectional screw 12 is passed through A storage handle 14 is fixedly connected to the outside of the storage box 7 to facilitate the rotation of the bidirectional screw 12. The storage guide rod 13 and the bidirectional screw 12 are arranged in parallel. The storage guide rod 13 passes through the two storage baffles 11 and slidably cooperates with the two storage baffles 11. When the bidirectional screw 12 rotates, the two storage baffles 11 cooperate with the threads of the bidirectional screw 12 and move towards or away from each other under the guidance of the storage guide rod 13, thereby playing a role in limiting the slurry located between the two storage baffles 11.

[0044] Reference Figure 3 and Figure 4 The coating telescopic cylinder 10 is installed on the first coating frame 35 and is used to drive the cutter head frame 9 to move toward or away from the coating roller 5, so as to quickly place the PET film between the coating roller 5 and the comma cutter head 8. Specifically, the coating telescopic cylinder 10 is selected as a cylinder in the embodiment of the present application. The cylinder body of the coating telescopic cylinder 10 is fixedly installed on the first coating frame 35. The piston rod of the coating telescopic cylinder 10 is penetrated through the first coating frame 35 and slides with the first coating frame 35. The cutter head frame 9 is rotatably installed with a rotating screw 15 coaxially arranged with the piston rod of the coating telescopic cylinder 10 toward one side of the coating telescopic cylinder 10. The rotating screw 15 is penetrated and threadedly engaged with one end of the piston rod of the coating telescopic cylinder 10, so that when the rotating screw 15 rotates, the rotating screw 15 drives the cutter head frame 9 and the comma cutter head 8 to adjust along the axial direction of the coating telescopic cylinder 10, thereby facilitating the rapid adjustment and adaptation of PET films of different thicknesses or the thickness of the slurry coating on one side of the PET film.

[0045] Reference Figure 3 In order to ensure the stability of the tool head frame 9 when the coating telescopic cylinder 10 drives the tool head frame 9 to move, two coating guide rods 16 are fixedly connected to the side of the tool head frame 9 facing the coating telescopic cylinder 10. The two coating guide rods 16 are arranged parallel to the coating telescopic cylinder 10. The two coating guide rods 16 are both inserted into the first coating frame 35 and slidably cooperate with the first coating frame 35 to play a role in limiting the movement of the tool head frame 9.

[0046] Reference Figure 4In order to further ensure the stability of the position of the cutter head holder 9 after the movement, the coating telescopic cylinder 10 is provided with a locking assembly, which is used to fix or loosen the rotating screw 15. Specifically, the locking assembly includes a fixed sleeve 17 and a locking sleeve 18, wherein the fixed sleeve 17 is fixedly mounted on one end of the piston rod of the coating telescopic cylinder 10, and the end of the fixed sleeve 17 away from the piston rod of the coating telescopic cylinder 10 is fixedly connected with a plurality of locking clamping rods 19 evenly distributed around its own axis in the circumferential direction, each locking clamping rod 19 is elastic, and when each locking clamping rod 19 moves toward the axial direction close to the fixed sleeve 17 and presses against the rotating screw 15, the position of the rotating screw 15 is fixed.

[0047] Reference Figure 4 and Figure 5 The locking sleeve 18 is slidably matched with the fixed sleeve 17, and a pressing driving surface 20 is provided in the locking sleeve 18. When the locking sleeve 18 moves in a direction close to the fixed sleeve 17, each locking clamp rod 19 moves in an axial direction close to the fixed sleeve 17 under the pressing action of the pressing driving surface 20. The fixed sleeve 17 is provided with a locking driving member, specifically, the locking driving member includes a driving spring 21 and a locking screw 22, wherein a fixing ring 23 is integrally fixedly connected to the outer peripheral surface of the fixed sleeve 17, and the fixing ring 23 is located at one end of the fixed sleeve 17 away from the locking screw 22. One end of the driving spring 21 is connected to the fixing ring 23, and the other end is connected to the locking sleeve 18. The driving spring 21 applies an elastic force to the locking sleeve 18 to move in a direction away from the fixed sleeve 17, so that in normal state, each locking clamp rod 19 does not press and fix the rotating screw 15.

[0048] Continue to refer to Figure 4 and Figure 5 The locking screw 22 is threadedly engaged with the outer circumferential surface of the locking sleeve 18. When one end of the locking screw 22 contacts the end of the fixed sleeve 17 away from the locking sleeve 18, that is, the side of the fixed ring 23 away from the locking screw 22, the locking sleeve 18 is fixed to the fixed sleeve 17, and each locking clamp 19 achieves a tight fixation to the rotating screw 15. The setting of the locking screw 22 facilitates the stability of the locking sleeve 18 when it is fixed to the fixed sleeve 17. When the locking screw 22 is rotated so that the locking screw 22 releases the contact with the fixed sleeve 17, the locking sleeve 18 moves in a direction away from the fixed sleeve 17 under the elastic force of the driving spring 21, thereby releasing the locking of the rotating screw 15 by each locking clamp 19.

[0049] Replay Figure 2The PET film receiving roller 4 is arranged between the first coating mechanism and the second coating mechanism and is used to carry and transport the side of the PET film away from the coating slurry. Specifically, the PET film receiving roller 4 is horizontally rotatably installed on the first coating frame 35. When one side of the PET film is coated with the slurry and then transported, the side of the PET film that is not coated with the slurry is pressed against the PET film receiving roller 4.

[0050] Reference Figure 1 and Figure 2 The PPS fabric unwinding mechanism includes a PPS fabric unwinding frame 24, a PPS fabric unwinding roller 25, a PPS fabric tensioning roller 26 and a PPS fabric receiving roller 27, wherein the PPS fabric unwinding roller 25 is rotatably mounted on the PPS fabric unwinding frame 24 and is used to wind the PPS fabric, and a plurality of PPS fabric tensioning rollers 26 are provided and are all rotatably mounted on the PPS fabric unwinding frame 24. In the embodiment of the present application, the number of PPS fabric tensioning rollers 26 is selected as three. When the PPS fabric is transported, it is sequentially wound around each PPS fabric tensioning roller 26, so that each PPS fabric tensioning roller 26 plays a role in tensioning the PPS fabric during transportation, thereby ensuring the stability of the PPS fabric during transportation.

[0051] Reference Figure 2 The PPS fabric receiving roller 27 is arranged close to the PET film receiving roller 4 and is used to carry and transport one side of the PPS fabric. Specifically, the first coating frame 35 is provided with two groups of rotating adjustment components, and the rotating adjustment components include an adjusting rocker 28, an adjusting push rod 29, an adjusting screw 30 and an adjusting spring 31, wherein the two ends of the PPS fabric receiving roller 27 are respectively horizontally rotatably installed on the two adjusting rockers 28 of the two groups of rotating adjustment components, one end of the adjusting push rod 29 of each group of rotating adjustment components abuts against the adjusting rocker 28 of each group of rotating adjustment components, and the adjusting screw 30 of each group of rotating adjustment components is rotatably installed on the end of the adjusting push rod 29 of each group of rotating adjustment components away from the adjusting rocker 28. The first coating frame 35 is fixedly installed with two coating fixing plates 32, and the adjusting screws 30 of the two groups of rotating adjustment components are respectively horizontally penetrated and threadedly engaged with the two coating fixing plates 32.

[0052] When the adjusting screw 30 rotates, the adjusting screw 30 drives the adjusting push rod 29 to move horizontally toward or away from the adjusting swing rod 28, so that the distance between the PPS fabric receiving roller 27 and the PET film receiving roller 4 is adjusted together, thereby facilitating the adaptation of PET films and PPS fabrics of different thicknesses. The provision of two sets of rotating adjustment components facilitates the stable support of the position of the PPS fabric receiving roller 27 after movement.

[0053] Continue to refer to Figure 2One end of the adjusting spring 31 of each group of rotating adjusting components is connected to the first coating frame 35, and the other end is connected to the adjusting rocker 28. The adjusting spring 31 applies an elastic force to the adjusting rocker 28 to move toward the adjusting push rod 29, so as to further ensure the stability of the position of the adjusting rocker 28 and the PPS fabric receiving roller 27 after the position adjustment, and at the same time play a certain buffering role during the transportation of the PPS fabric, so that the PPS fabric is not easily damaged due to excessive instantaneous tension during transportation, thereby ensuring the stability of the PPS fabric during transportation.

[0054] Reference Figure 1 and Figure 2 The second coating mechanism includes a second coating frame 33 and a coating assembly. In the embodiment of the present application, the second coating frame 33 is fixedly installed on the first coating frame 35 and is located on the top of the first coating frame 35. The coating assembly in the second coating mechanism has the same structure as the coating assembly in the first coating mechanism. The difference lies in the different setting positions, which will not be repeated here. The coating assembly in the second coating mechanism is mainly used for slurry coating on the side of the PPS fabric away from the PET film.

[0055] In order to ensure the stability when the slurry is coated on one side of the PET film, the PPS fabric is attached to the side of the PET film coated with the slurry and they are sent together to the second coating mechanism for coating, the second coating machine is horizontally installed with a bonding roller 34, and the bonding roller 34 is located between the first coating mechanism and the second mechanism and is arranged close to the coating component of the second mechanism. The PPS fabric and the PET film are bonded when they are wound around the bonding roller 34, and then they are sent together to the coating component of the second mechanism for coating.

[0056] The implementation principle of a continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm in an embodiment of the present application is as follows: during the unwinding and coating process of the diaphragm, i.e., the PPS fabric, the PET film is first unwound and coated with slurry through the coating component of the first coating mechanism, and then the PET film is conveyed to the second coating mechanism, where the PPS fabric is unwound and laminated to the side of the PET film coated with slurry, and when the PPS fabric and the PET film are laminated and fed together to the second coating mechanism, the coating component of the second coating mechanism coats the slurry on the side of the PPS fabric away from the PET film, and then the slurry-coated PPS fabric and PET film are fed to the pre-evaporation device for pre-evaporation.

[0057] In the process of coating both sides of the PPS fabric, the PET film first plays a supporting role for the PPS fabric, which is beneficial to ensure the coating stability of the slurry on the PET film when it is coated on the PPS fabric, and the slurry coating process on both sides of the PPS fabric can be carried out when the slurry is wet, so that after the slurry is coated on both sides of the PPS fabric, it is only necessary to send it to the pre-evaporation device for pre-evaporation once, without the need to coat and pre-evaporate the slurry on both sides of the PPS fabric in turn, which is beneficial to improve the work efficiency of slurry coating on the PPS fabric, i.e., both sides of the PPS fabric.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm, characterized in that: It comprises a PET film unwinding mechanism, a first coating mechanism, a PPS fabric unwinding mechanism and a second coating mechanism, wherein the PET film unwinding mechanism is used to unwind the PET film to the first coating mechanism and the second coating mechanism in sequence; the first coating mechanism is used to apply slurry to one side of the PET film; the PPS fabric unwinding mechanism is used to unwind the PPS fabric to the second coating mechanism, and when the PPS fabric unwinding mechanism unwinds the PPS fabric to the second coating mechanism, the PPS fabric is attached to the side of the PET film coated with slurry; the second coating mechanism is used to apply slurry to the side of the PPS fabric away from the PET film; The PET film unwinding mechanism comprises a PET film unwinding frame (1), a PET film unwinding roller (2), a PET film tensioning roller (3) and a PET film receiving roller (4); the PET film unwinding roller (2) is rotatably mounted on the PET film unwinding frame (1) and is used to wind the PET film; a plurality of PET film tensioning rollers (3) are provided and are all rotatably mounted on the PET film unwinding frame (1); each of the PET film tensioning rollers (3) is used to tension the PET film fed into the coating assembly for slurry coating; the PET film receiving roller (4) is arranged between the first coating mechanism and the second coating mechanism and is used to carry and transport the side of the PET film away from the coating slurry; The first coating mechanism comprises a first coating frame (35) and a coating assembly, wherein the coating assembly is arranged on the first coating frame (35) and is used to coat the slurry on one side of the PET film, and the coating assembly comprises a coating roller (5), a material storage box (7), a comma cutter head (8), a cutter head frame (9) and a coating telescopic cylinder (10), wherein the coating roller (5) is rotatably mounted on the first coating frame (35), the material storage box (7) is mounted on the first coating frame (35) and is used to accommodate the slurry, the comma cutter head (8) is mounted on the cutter head frame (9) and is located on the top of the material storage box (7), and the coating telescopic cylinder (10) is mounted on the first coating frame (35) and is used to drive the cutter head frame (9) to move in a direction close to or away from the coating roller (5); The cutter head frame (9) is rotatably mounted with a rotating screw (15), the rotating screw (15) being passed through and threadedly engaged with one end of a piston rod of a coating telescopic cylinder (10), the coating telescopic cylinder (10) being provided with a locking assembly for fixing or loosening the rotating screw (15).

2. The continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm according to claim 1, characterized in that: The locking assembly comprises a fixed sleeve (17) and a locking sleeve (18), wherein the fixed sleeve (17) is fixedly mounted on one end of a piston rod of a coating telescopic cylinder (10), and the end of the fixed sleeve (17) away from the piston rod of the coating telescopic cylinder (10) is fixedly connected to a plurality of locking clamping rods (19) uniformly distributed circumferentially around its own axis, and each of the locking clamping rods (19) is elastic, and the locking sleeve (18) is slidably fitted on the fixed sleeve (17), and the fixed sleeve (17) is provided with a locking driving member for driving the locking sleeve (18) to slide toward or away from the fixed sleeve (17), and when the locking sleeve (18) moves in a direction close to the fixed sleeve (17), each of the locking clamping rods (19) moves in an axial direction close to the fixed sleeve (17).

3. The continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm according to claim 2, characterized in that: The locking drive member comprises a driving spring (21) and a locking screw (22); one end of the driving spring (21) is connected to the fixed sleeve (17) and the other end is connected to the locking sleeve (18); the driving spring (21) applies an elastic force to the locking sleeve (18) to move in a direction away from the fixed sleeve (17); the locking screw (22) is threadedly engaged with the locking sleeve (18); when one end of the locking screw (22) contacts the end of the fixed sleeve (17) away from the locking sleeve (18), the locking sleeve (18) is fixed to the fixed sleeve (17), and each of the locking clamping rods (19) is pressed against the rotating screw (15).

4. The continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm according to claim 1, characterized in that: Two material storage baffles (11) and a material storage movement component are arranged in the material storage box (7). The two material storage baffles (11) are slidably matched in the material storage box (7). The material storage movement component comprises a bidirectional screw (12) and a material storage guide rod (13). The bidirectional screw (12) is horizontally rotatably installed in the material storage box (7). The two ends of the bidirectional screw (12) with opposite thread rotation directions are respectively passed through the two material storage baffles (11) and are threadedly matched with the two material storage baffles (11). The material storage guide rod (13) and the bidirectional screw (12) are arranged in parallel. The material storage guide rod (13) is passed through the two material storage baffles (11) and is slidably matched with the two material storage baffles (11).

5. The continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm according to claim 1, characterized in that: The PPS fabric unwinding mechanism comprises a PPS fabric unwinding frame (24), a PPS fabric unwinding roller (25), a PPS fabric tensioning roller (26) and a PPS fabric receiving roller (27); the PPS fabric unwinding roller (25) is rotatably mounted on the PPS fabric unwinding frame (24) and is used for winding the PPS fabric; a plurality of PPS fabric tensioning rollers (26) are provided and are all rotatably mounted on the PPS fabric unwinding frame (24); and the PPS fabric receiving roller (27) is provided close to the PET film receiving roller (4) and is used for carrying and transporting one side of the PPS fabric.

6. The continuous coating and laminating device for alkaline water electrolysis hydrogen production diaphragm according to claim 5, characterized in that: The first coating frame (35) is provided with a rotation adjustment component, which includes an adjustment rocker (28), an adjustment push rod (29) and an adjustment screw (30); the PPS fabric receiving roller (27) is horizontally rotationally mounted on the adjustment rocker (28); one end of the adjustment push rod (29) abuts against the adjustment rocker (28); the adjustment screw (30) is rotationally mounted on one end of the adjustment push rod (29) away from the adjustment rocker (28); the adjustment screw (30) is horizontally penetrated and threadedly engaged with the first coating frame (35).

7. The continuous coating and laminating device for the diaphragm for producing hydrogen by alkaline water electrolysis according to claim 6, characterized in that: The rotation adjustment component also includes an adjustment spring (31), one end of the adjustment spring (31) is connected to the first coating frame (35), and the other end is connected to the adjustment swing rod (28), and the adjustment spring (31) applies an elastic force to the adjustment swing rod (28) to move in a direction close to the adjustment push rod (29).

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