Photobioreactor sheet with baffle structure as well as integral one-time forming manufacturing device and manufacturing method of photobioreactor sheet

Abstract

The invention relates to the field of microalgae culture photobioreactors, in particular to a photobioreactor sheet with a baffle structure and an integral one-time forming manufacturing device and method of the photobioreactor sheet. The invention further relates to a manufacturing device and a manufacturing method for manufacturing a soft plate type photobioreactor by adopting the photobioreactor sheet with the baffle structure. The problem that the photobioreactor sheet with the baffle structure is difficult to integrally form at one time and continuously produce is solved; and the photobioreactor sheet with the baffle structure, which is stable and reliable in quality and has any length, and a corresponding manufacturing device and a corresponding manufacturing method are provided for subsequent welding of rib plates, drawstring welding and peripheral edge welding between flow channels of the soft plate type photobioreactor.

Description

Technical Field

[0001] The invention relates to the field of microalgae cultivation photobioreactors, and in particular to a photobioreactor sheet with a baffle structure and an integral one-step molding manufacturing device and a manufacturing method thereof. Background Art

[0002] Microalgae is a general term for eukaryotic or prokaryotic microorganisms that can release oxygen through photosynthesis. They can use light and CO2 to synthesize organic substances such as amino acids, proteins, lipids, vitamins and pigments, and have important application prospects in the fields of human food, medicine, dyes, aquaculture and biorefining. However, the large-scale application of microalgae still faces the problems of difficult large-scale supply and high production costs. The core problem lies in the high cost of photobioreactors. In order to solve this problem, on the one hand, it is necessary to optimize the reactor design and improve the utilization rate of light energy, thereby greatly improving the yield; on the other hand, it is necessary to reduce the manufacturing cost of the reactor and the cost of materials and energy required for cultivation.

[0003] In recent years, a lot of research has been carried out on improving the efficiency of photoreactors and reducing costs. Among them, adding a static mixer or baffle in the photobioreactor can not only strengthen the mixing of the culture solution, but also realize the flash effect of microalgae cells, greatly improving the light energy utilization rate of the photobioreactor. Chinese patents ZL 201010193837.4, ZL201420323929.3 and ZL201410270445.1 provide a soft plate photobioreactor with a specific internal structure, which makes the culture solution (algae solution) flow in a spiral shape by arranging baffles at an angle of 20-70 degrees with the flow direction of the culture solution on the illuminated surface and the non-illuminated surface of the inner wall of the bioreactor along the flow direction of the culture solution, so as to realize the shuttle of algae cells between the light zone and the dark zone of the photobioreactor, exert the "flash effect" of algae cells, thereby improving the light energy utilization rate of the large-scale cultivation of microalgae and increasing the yield of microalgae cells.

[0004] When such a photobioreactor is made of a soft light-transmitting material (for example, one of polyethylene, polyvinyl chloride, polypropylene, ethylene-vinyl acetate copolymer, polyester or thermoplastic elastomer), due to its special baffle structure, under the existing technical conditions, the soft light-transmitting film material and the upper baffle and lower baffle of the soft plate-type photobioreactor are difficult to be formed as a whole at one time, and only a two-step process can be used. The first step is to respectively manufacture the baffle by injection molding, and manufacture the soft light-transmitting film material by extrusion blow molding, casting or calendering. Then, the baffle is positioned on a flat welding device, the soft light-transmitting film material is laid, and the baffle and the soft light-transmitting film material are welded by hot pressing, ultrasonic or high-frequency welding to obtain a photobioreactor sheet with a baffle structure. The second step is to align and position the two photobioreactor sheets with a baffle structure in a face-to-face manner, and then weld the ribs between the flow channels of the soft plate-type photobioreactor, weld the drawstrings, and weld the surrounding edges, thereby manufacturing a soft plate-type photobioreactor. This manufacturing process is not only difficult to align the weld seam, but also can only be welded by semi-automatic manufacturing methods such as manual alignment and flat-plate welding equipment, while the welding of the drawstring can only be done manually. Such an intermittent manufacturing process has problems such as low production efficiency, high manufacturing cost, and difficulty in ensuring quality, and can only manufacture small-sized (for example, 2 meters) soft plate-type photobioreactors.

[0005] Although Chinese Patent ZL201420323929.3 and Chinese Patent ZL201410270445.1 have mentioned that "the baffle of the soft plate-type photobioreactor and the soft light-transmitting film material can be bonded together by bonding, hot pressing, high-frequency welding, ultrasonic welding and other methods, or the baffle and the soft light-transmitting film material can be formed together at one time by calendering, sheet extrusion, extrusion compounding, blister compounding and other methods", the above patents do not provide specific manufacturing processes and implementation plans. At present, there is no device on the market that can realize the one-time molding of the baffle and the soft light-transmitting film material as a whole. To realize the one-time molding of the baffle and the soft light-transmitting film material as a whole, it is necessary to overcome the difficulties such as the difficulty of molding the baffle due to the large ratio of the height of the baffle to the thickness of the soft light-transmitting film material, and the easy damage of the soft light-transmitting film material during the demolding process. Summary of the invention

[0006] The purpose of the present invention is to provide a photobioreactor sheet with a baffle structure and an integrated, continuous, and mass-produced device and manufacturing method (and subsequently made into a soft plate-type photobioreactor flow channel and reactor) to address the problems existing in the above-mentioned baffle and soft light-transmitting film material being integrally formed at one time (and subsequently made into a soft plate-type photobioreactor), so as to solve the problem that the photobioreactor sheet with a baffle structure is difficult to be integrally formed at one time and continuously produced, and also to provide a photobioreactor sheet with a baffle structure of stable and reliable quality and arbitrary length for the subsequent welding of ribs between the flow channels of the soft plate-type photobioreactor, welding of drawstrings, and welding of surrounding edges.

[0007] The invention provides a photobioreactor sheet with a baffle structure, which is convenient for automatic welding of ribs between flow channels of a soft plate-type photobioreactor, and an integral one-step molding manufacturing device and a manufacturing method thereof.

[0008] The photobioreactor sheet with baffle structure of the present invention is composed of multiple sheet repeating units connected end to end as shown in Figure 1. The sheet repeating unit is composed of multiple baffles 12 and a substrate 11 connected to the baffles, and the two are an integrated structure; the substrate is a soft light-transmitting film material.

[0009] The baffle-structured photobioreactor sheet of the present invention includes two types, a non-folding type (Type A) and a folding type (Type B), according to the different sheet repeating units. The non-folding type photobioreactor sheet with a baffle structure is used to weld two sheets face to face at the ribs to form a soft plate-type photobioreactor flow channel, and the folding type photobioreactor sheet with a baffle structure is used to fold one sheet into two layers face to face and then weld them at the ribs to form a soft plate-type photobioreactor flow channel, which is more convenient for automated production.

[0010] The non-folding photobioreactor sheet with baffle structure of the present invention is composed of a plurality of non-folding sheet repeating units connected end to end as shown in FIG. 1( a ). In the non-folding sheet repeating unit, the area where the baffles 12 are located is distributed on both sides of the central axis A', and the area where the baffles 12 are located is composed of a plurality of baffles 12 and a substrate 11 connected to the baffles, and the two are an integrated structure.

[0011] The baffles are arranged in a row perpendicular to the central axis A', and the distance between the head and tail of the projections of two adjacent rows of baffles on the central axis A' is called the row spacing, and the projection of the baffles (in each row) on the central axis is called the row width of the baffles; the row spacing is 10-200mm, the distance between the first row of baffles and the edge of the sheet repeating unit is 10-400mm, and the distance between the last row of baffles and the edge of the sheet repeating unit is 10-400mm.

[0012] The baffle is preferably such that when two sheets are aligned face to face and then welded at the ribs to form a flow channel of the soft plate-type photobioreactor, the rows of the two sheets are staggered by a row spacing along the central axis A' direction.

[0013] The number of baffle rows of the non-folding sheet repeating unit is 2-200 rows, preferably 5-100 rows.

[0014] A row of baffles arranged along the central axis A' is called a column, the head-to-tail distance between the projections of two adjacent columns of baffles in the direction perpendicular to the central axis A' is called the column spacing, and the projection of the baffles (in each column) in the direction perpendicular to the central axis A' is called the column width of the baffles; the column spacing is 10mm-300mm, and the distance between the outermost column of baffles and the edge of the sheet repeating unit is 10-300mm.

[0015] The number of baffle columns of the non-folding sheet repeating unit is 1-100 columns, preferably 1-50 columns.

[0016] The width of the non-folding photobioreactor sheet with baffle structure is 30mm-20000mm.

[0017] The folding type photobioreactor sheet with baffle structure of the present invention is composed of a plurality of folding type sheet repeating units connected end to end as shown in FIG. 1( b ). In the folding type sheet repeating unit, the area where the baffle 12 is located is distributed on both sides of the folding line B', and the area where the baffle 12 is located is composed of a plurality of baffles 12 and a substrate 11 connected to the baffle, and the two are an integrated structure.

[0018] The baffles are arranged in a row perpendicular to the folding line B', and the distance between the head and tail of the projections of two adjacent rows of baffles on the folding line B' is called the row spacing, and the projection of the baffles (of each row) on the folding line is called the row width of the baffles; the row spacing is 10-200mm, the distance between the first row of baffles and the edge of the sheet repeating unit is 10-400mm, and the distance between the last row of baffles and the edge of the sheet repeating unit is 10-400mm.

[0019] The rows of baffles on the left and right sides of the fold line B' are preferably staggered by a row spacing along the fold line B'.

[0020] The number of baffle rows of the folding sheet repeating unit is 2-200 rows, preferably 5-100 rows.

[0021] A row of baffles arranged along the folding line B' is called a column, the head-to-tail spacing of the projections of two adjacent columns of baffles in the direction perpendicular to the folding line B' is called the column spacing, the projection of the baffles (of each column) in the direction perpendicular to the folding line B' is called the column width of the baffles, and the positions of the columns on the left and right sides of the folding line B' of the sheet are symmetrical along the folding line B'; the column spacing is 10mm-300mm, the distance between the outermost columns of baffles on both sides of the folding line B' and the edge of the sheet repeating unit is 10-300mm, and the distance between the innermost columns of baffles on both sides of the folding line B' and the folding line B' is 10-300mm.

[0022] The number of baffle columns of the folding sheet repeating unit is 2-200 columns, preferably 2-100 columns.

[0023] The width of the folded photobioreactor sheet with baffle structure is 60mm-40000mm.

[0024] The baffles of the (non-folding type and folding type) photobioreactor sheet with baffle structure are long strips, and the angle between the length direction of the baffles and the central axis A' / folding line B' is 20-70 degrees.

[0025] The cross-sectional shape of the baffle includes but is not limited to rectangle, trapezoid, triangle and semicircle (as shown in FIG. 2( a)), that is, the baffle can be a rectangular baffle 21, a triangular baffle 22, a trapezoidal baffle 23 and a semicircular baffle 24; wherein the thickness of the rectangular baffle is 1-10 mm; the thickness of the trapezoidal, triangular or semicircular baffle at half height is 1-10 mm.

[0026] Preferably, the bottom of the baffle is a raised boss structure, as shown in FIG2(b). The boss structure can reduce the risk of the sheet being torn at the root of the baffle during the demolding process, thereby solving the problem of the soft light-transmitting film material being easily damaged during the demolding process.

[0027] The connection between the baffle and the boss structure at the bottom of the baffle includes but is not limited to one or more of an arc, a cone, a chamfer and a rounded corner structure.

[0028] The length of the baffle is 5-300 mm, and the height (ie, the height of the cross section of the baffle itself) is 1-20 mm, and the preferred height of the baffle is 4-16 mm.

[0029] The baffle may be a solid structure or a hollow structure.

[0030] The back side of the baffle with the hollow structure may be an open groove structure, or may be a closed surface with an open part formed by combining a film and a substrate.

[0031] The thickness of the substrate is 0.05-3 mm, preferably 0.08-1.5 mm.

[0032] The substrate may be a single-layer structure or a multi-layer structure.

[0033] The thickness of the substrate at the rib plate welding part between the two rows of baffles is greater than or equal to the thickness of the substrate at other parts (the other parts are parts on the substrate other than the rib plate welding part and the boss structure part). The thickness of the substrate between the two rows of baffles is preferably 1-5 times the thickness of the substrate at other parts. By designing the substrate with non-uniform thickness, the overall mass of the reactor can be reduced while ensuring the pressure bearing capacity of the welding part, further reducing the cost of the reactor.

[0034] The material of the baffle is preferably the same as that of the substrate.

[0035] The material of the substrate is a soft light-transmitting film material, and the soft light-transmitting film material includes but is not limited to a composite material of one or more of polyethylene, polyvinyl chloride, polypropylene, polyester, ethylene-vinyl acetate copolymer, polyurethane, polyethylene terephthalate, thermoplastic elastomer, polyimide and polyamide.

[0036] The material of the substrate can be further selected to be a light-transmitting and air-permeable material. Preferably, the material of the substrate is a soft light-transmitting film material that is permeable to oxygen but not to carbon dioxide gas.

[0037] Processing aids can be added to the materials of the baffle and substrate, including but not limited to one or more of anti-aging agents, ultraviolet light stabilizers, antioxidants, nucleating agents, lubricants, opening agents, etc., to further improve the anti-aging, light transmittance and processing performance of the soft plate type photobioreactor.

[0038] The processing aid can be added directly to the materials of the baffle and the substrate, or first prepared into a functional masterbatch and then added to the materials of the baffle and the substrate. Preferably, the processing aid is added in the form of a functional masterbatch.

[0039] Another object of the present invention is to provide an integral one-time molding manufacturing device for the above-mentioned photobioreactor sheet with baffle structure, the integral one-time molding manufacturing device of the present invention comprises a material extrusion device and a molding device which are arranged in sequence, such as Figure 3 shown.

[0040] The material extrusion device comprises a premixing device, a vacuum feeder, a single-screw extruder or a twin-screw extruder, a screen-changing filter, a melt pump and a hanger-type die head which are arranged in sequence.

[0041] The molding device comprises a solid molding device for manufacturing a photobioreactor sheet with a solid baffle structure or a hollow molding device for manufacturing a photobioreactor sheet with a hollow baffle structure.

[0042] The solid forming device for manufacturing a photobioreactor sheet with a solid baffle structure can be used for non-folding sheets and folding sheets, and includes an upper roller, a middle roller and a lower roller arranged horizontally from top to bottom, the rotating shafts of the upper roller, the middle roller and the lower roller are supported by supports at both ends, the upper roller, the middle roller and the lower roller are connected to a driving device, and the roller cylinder of the middle roller is provided with a plurality of long strip grooves for rolling the sheet to form a baffle, and the upper roller and the lower roller are transmission rollers, both of which are smooth rollers. The upper roller, the middle roller, the lower roller and the driving device are all installed on a bracket.

[0043] Figure 4 It is a solid forming device for the manufacture of non-folding sheets and folding sheets. When used for the manufacture of non-folding sheets, only Figure 4 The left or right area of ​​the center axis of the middle roller of the solid forming device shown, that is, the long strip groove on the middle roller is Figure 4 The structure arrangement shown on the left or right side of the center axis of the middle roller of the solid forming device shown in the figure; when used for the manufacture of folding sheet materials, the Figure 4 The areas on both sides of the center axis of the middle roller of the solid forming device shown, that is, the long strip grooves on the middle roller are arranged according to Figure 4 The structural arrangement of the middle roller of the solid forming device shown.

[0044] Among them, a plurality of micropores are provided at the bottom of the elongated groove, and the micropores are connected to the internal space of the middle roller for exhaust. Preferably, an air suction pump is provided inside the middle roller, and the air suction pump is used to perform negative pressure extraction through the micropores to fill the elongated groove with materials.

[0045] The shape and arrangement direction of the long strip grooves on the middle roller of the solid forming device correspond to the shape and arrangement direction of the solid baffles on the photobioreactor sheet with baffle structure.

[0046] The size of the long strip groove on the middle roller of the solid forming device is consistent with the size of the solid baffle on the baffle structure photobioreactor sheet, and a certain tolerance can be set according to the material characteristics of the baffle structure photobioreactor sheet, and the tolerance range is -10% to +10%.

[0047] Preferably, the present invention provides a concave platform structure at the junction between the top of the elongated groove and the outer wall of the middle roller, and the corresponding bottom of the baffle after demolding is a raised boss structure, as shown in FIG2(b). The boss structure can reduce the risk of the sheet being torn at the root of the baffle during the demolding process, thereby solving the problem of easy damage to the soft light-transmitting film material during the demolding process.

[0048] The ratio of the outer diameter of the roller of the middle roller of the solid forming device to the depth of the long strip groove is 20:1-120:1, so as to facilitate demoulding.

[0049] The circumference of the outer wall of the middle roller of the solid forming device is consistent with the length of a single sheet repeating unit of the photobioreactor sheet with a solid baffle structure, that is, one sheet repeating unit is formed by walking around the middle roller once. A certain tolerance can also be set according to the material characteristics of the photobioreactor sheet with a solid baffle structure, and the tolerance range is -10% to +10%.

[0050] The length of the upper roller, middle roller and lower roller of the solid forming device is greater than or equal to the width of the photobioreactor sheet with solid baffle structure. Preferably, the ratio of the length of the upper roller, middle roller and lower roller to the width of the photobioreactor sheet with solid baffle structure is 1.1:1-1.6:1.

[0051] The upper roller, middle roller and lower roller of the solid forming device have a diameter in the middle of the roller that is greater than or equal to the diameter of the roller edge. Preferably, the diameter in the middle of the roller is slightly greater than the diameter of the roller edge (mid-height structure), and the mid-height value of the roller is 0.01-20mm.

[0052] The cross-sectional shape of the long strip groove of the solid forming device includes but is not limited to a rectangle, a trapezoid, a triangle and a semicircle.

[0053] The hollow forming device for manufacturing a photobioreactor sheet with a hollow baffle structure can be used for non-folding sheets and folding sheets ( Figure 5 The hollow forming device is used for non-folding and folding sheets, and includes an upper roller, a middle roller and a lower roller arranged horizontally from top to bottom, and the rotating shafts of the upper roller, the middle roller and the lower roller are supported by the supports at both ends. The upper roller, the middle roller and the lower roller are connected to the driving device, and the roller of the middle roller is provided with a plurality of long strip grooves for rolling the sheet to form a baffle, and the roller of the lower roller is provided with a plurality of long strip protrusions corresponding to the long strip grooves, and the upper roller is a smooth roller. The upper roller, the middle roller, the lower roller and the driving device are all installed on the bracket.

[0054] Figure 5 It is a hollow forming device for manufacturing non-folding sheets and folding sheets. When used for manufacturing non-folding sheets, only Figure 5 The left or right area of ​​the central axis of the middle roller of the hollow forming device shown, that is, the long strip groove on the middle roller is pressed Figure 5 The structure arrangement shown on the left or right side of the center axis of the middle roller of the hollow forming device shown in the figure; when used for manufacturing folding sheet materials, at the same time, using Figure 5 The hollow forming device shown in the figure has two areas on both sides of the central axis of the middle roller, that is, the long strip grooves on the middle roller are arranged according to the Figure 5The structural arrangement of the middle roller of the hollow forming device shown.

[0055] Among them, the bottom of the long strip groove is provided with a plurality of micropores, and the micropores are connected with the internal space of the middle roller for exhaust. Preferably, an air suction pump is provided inside the middle roller, and the air suction pump is used to perform negative pressure suction through the micropores to fill the long strip groove with materials.

[0056] The shape and arrangement direction of the long strip grooves on the middle roller of the hollow forming device are consistent with the shape and arrangement direction of the hollow baffles on the photobioreactor sheet with baffle structure.

[0057] The size of the long strip groove on the middle roller of the hollow forming device is consistent with the size of the outer wall of the hollow baffle on the baffle structure photobioreactor sheet, and a certain tolerance can be set according to the material characteristics of the baffle structure photobioreactor sheet, and the tolerance range is -10% to +10%.

[0058] The shape and arrangement direction of the long strip protrusions on the lower roller of the hollow forming device are consistent with the shape and arrangement direction of the hollow baffles on the photobioreactor sheet with baffle structure.

[0059] The size of the long strip protrusion on the lower roller of the hollow forming device is consistent with the size of the inner wall of the hollow baffle on the baffle structure photobioreactor sheet, and a certain tolerance can be set according to the material characteristics of the baffle structure photobioreactor sheet, and the tolerance range is -10% to +10%.

[0060] The ratio of the outer diameter of the roller of the middle roller of the hollow forming device to the depth of the long strip groove is 20:1-120:1.

[0061] The outer wall circumference of the middle roller of the hollow forming device is consistent with the length of a single repeating unit of the photobioreactor sheet with hollow baffle structure, and a certain tolerance can be set according to the material characteristics of the photobioreactor sheet with hollow baffle structure, and the tolerance range is -10% to +10%.

[0062] The ratio of the outer diameter of the lower roller of the hollow forming device to the height of the long strip protrusion is 20:1-120:1.

[0063] The outer wall circumference of the lower roller of the hollow forming device is consistent with the length of a single repeating unit of the photobioreactor sheet with a hollow baffle structure, and a certain tolerance can be set according to the material characteristics of the photobioreactor sheet with a hollow baffle structure, and the tolerance range is -10% to +10%.

[0064] The length of the upper roller, middle roller and lower roller of the hollow forming device is greater than or equal to the width of the photobioreactor sheet with hollow baffle structure. Preferably, the ratio of the length of the upper roller, middle roller and lower roller to the width of the photobioreactor sheet with hollow baffle structure is 1.1:1-1.6:1.

[0065] The upper roller, middle roller and lower roller of the hollow forming device have a diameter in the middle of the roller that is greater than or equal to the diameter of the roller edge. Preferably, the diameter in the middle of the roller is slightly greater than the diameter of the roller edge (mid-height structure), and the mid-height value of the roller is 0.01-20mm.

[0066] The cross-sectional shape of the long strip groove of the middle roller of the hollow forming device includes but is not limited to a rectangle, a trapezoid, a triangle and a semicircle.

[0067] The cross-sectional shape of the long strip protrusion of the lower roller of the hollow forming device includes but is not limited to a rectangle, a trapezoid, a triangle and a semicircle.

[0068] The hollow forming device of the photobioreactor sheet with a hollow baffle structure can be used in conjunction with a film synchronous compounding device to manufacture the photobioreactor sheet with a hollow baffle structure with a closed baffle back.

[0069] The film synchronous composite device comprises a finished film for sealing the back of the baffle and a conveyor. The finished film for sealing the back of the baffle is conveyed by the conveyor, and the upper roller of the hollow forming device is used as a pressing roller to press it on the back of the photobioreactor sheet with a hollow baffle structure to realize the composite of the finished film and the substrate.

[0070] The material of the finished film used for sealing the back of the baffle is a polymer material that can be composited with the material of the photobioreactor sheet with a hollow baffle structure, preferably a polymer material that can be composited without glue, which can be the same as the substrate material or different, including but not limited to one or more composite materials of polyethylene, polyvinyl chloride, polypropylene, polyester, ethylene-vinyl acetate copolymer, polyurethane, polyethylene terephthalate, thermoplastic elastomer, polyimide and polyamide.

[0071] Preferably, the melting point of the material of the finished film used for sealing the back side of the baffle is higher than or equal to the material of the photobioreactor sheet with the hollow baffle structure.

[0072] The forming device also includes a cooling device for cooling and shaping the photobioreactor sheet with baffle structure, and the cooling device is at least connected to the lower roller and the middle roller.

[0073] The cooling device includes a first cooling mechanism connected to the lower roller, a second cooling mechanism connected to the middle roller, and a third cooling mechanism connected to the upper roller, wherein the first cooling mechanism has a first constant temperature controller for controlling the temperature of the lower roller, the second cooling mechanism has a second constant temperature controller for controlling the temperature of the middle roller, and the third cooling mechanism has a third constant temperature controller for controlling the temperature of the upper roller.

[0074] The rear end of the forming device can be sequentially provided with a trimming device for trimming the edge of the baffle structure photobioreactor sheet, a cooling rack, a first traction device, a storage rack, a second traction device, a transverse cutting device for cutting on the sheet and a winding device for manufacturing the baffle structure photobioreactor sheet; the trimming device for trimming the edge of the baffle structure photobioreactor sheet, a traction device, and a manufacturing device for the flow channel of the soft plate type photobioreactor can also be sequentially provided, so that the prepared baffle structure photobioreactor sheet can be directly used for manufacturing the flow channel of the soft plate type photobioreactor and the soft plate type photobioreactor without cooling and winding.

[0075] The trimming device includes a trimming frame, a trimming machine drive roller assembly arranged on the trimming frame and used to convey sheets, and trimming knives arranged on both sides of the trimming frame. The blades of the trimming knives are located on the sheet conveying path, and the distance between the two trimming knives is less than the roller surface length of the drive roller.

[0076] The transverse cutting device can be a point breaking processing device or a sheet cutting device, which is used to cut the sheet of the photobioreactor with baffle structure according to the required length.

[0077] The dot-break line processing device includes a dot-break line processing frame, a dot-break line processing machine transmission roller assembly arranged on the dot-break line processing frame and used to convey sheets, and a punching mechanism arranged on the dot-break line processing frame, the punching mechanism includes a plurality of punching needles arranged at equal intervals along the width direction of the strip and a punching drive assembly used to drive the punching needles to make reciprocating motion perpendicular to the surface of the strip.

[0078] The sheet material cutting device comprises a processing frame, a driving roller assembly arranged on the processing frame and used for conveying the strip material, and a cutter or a laser cutting device arranged on the processing frame.

[0079] The one-step forming manufacturing device for the photobioreactor sheet with baffle structure also includes a monitoring and control component. The material extrusion device, the forming device, the trimming device, the first traction device, the second traction device, the transverse cutting device and the monitoring and control component are signal-connected. The monitoring and control component is signal-connected to the central control device, and the central control device is signal-connected to the terminal server.

[0080] The monitoring and control components, central control equipment and terminal servers in the present invention all adopt common equipment in the field and can be purchased commercially.

[0081] The overall one-step forming manufacturing method of the photobioreactor sheet with a (solid or hollow) baffle structure of the present invention comprises the following specific manufacturing steps:

[0082] 1. Preheating: Start the power supply of the single screw extruder or twin screw extruder of the material extrusion device to heat the screw. After the screw temperature reaches the set temperature, set the temperature of the upper roller, middle roller and lower roller of the molding device to 10-80℃, and keep a certain distance between the upper roller, middle roller and lower roller, and start the molding device (the molding device includes a cooling device).

[0083] 2. Premixing heating: After the screw temperature of the material extruder and the temperatures of the upper, middle and lower rollers of the molding device reach the set temperature, the raw materials of the baffle and substrate materials and the functional masterbatch containing the processing aid (hereinafter referred to as the material) are added to the mixer in proportion for premixing. The mixing temperature is 10-80°C, the rotation speed is 10-800 rpm, and the mixing time is 1-10 minutes.

[0084] 3. Extrusion molding demoulding: Use a single-screw extruder or a twin-screw extruder to melt and extrude the material, filter it through the screen filter of the material extrusion device, and pump it with a melt pump. Then, it will be formed into a flat sheet material through a hanger-type die. The flat sheet material will be pulled to the gap between the lower roller and the middle roller of the molding device. The distance between the lower roller and the middle roller is adjusted to be close to the thickness of the sheet of the photobioreactor with a baffle structure. The flat sheet material is clamped, and the speed of the lower roller and the middle roller is adjusted to 0.2-10 rpm, so that the flat sheet material fills the long strip groove of the middle roller to form a complete solid The hollow baffle structure is formed by filling the gap between the long strip groove of the middle roller and the long strip protrusion of the lower roller to obtain a preliminarily formed photobioreactor sheet with a baffle structure; the preliminarily formed photobioreactor sheet with a baffle structure is pulled to the gap between the upper roller and the middle roller, the distance between the upper roller and the middle roller is adjusted to press the preliminarily formed photobioreactor sheet with a baffle structure, and then the rotation speed of the upper roller is adjusted to 0.2-10 revolutions per minute, and the force generated by the two rollers rotating in opposite directions is used to make the baffle come out of the long strip groove to achieve demolding.

[0085] 4. Cooling, shaping and cutting: The initially formed photobioreactor sheet with baffle structure is wound around the upper roller of the forming device for half a circle and then led out from the upper part of the upper roller, and pulled to the cooling rack, the first traction device, the storage rack, the second traction device, the transverse cutting device and the winding device, and the second traction device, the transverse cutting device and the winding device are started for further cooling, shaping, cutting and winding to obtain the photobioreactor sheet with baffle structure.

[0086] The present invention also provides a soft plate-type photobioreactor flow channel made of the aforementioned photobioreactor sheet with baffle structure, wherein the soft plate-type photobioreactor flow channel is formed by aligning two sheets of the non-folding photobioreactor sheet with baffle structure of any length and welding them at the rib plate position; or by folding the folding photobioreactor sheet with baffle structure of any length along a fold line and welding them at the rib plate position.

[0087] The above-mentioned integral one-step molding manufacturing device and manufacturing method for the photobioreactor sheet with baffle structure can be used to manufacture the photobioreactor sheet with baffle structure of any length (especially short or extra-long size).

[0088] Among them, short-sized (for example, 0.2-5 meters) baffle-structured photobioreactor sheets can be welded to form flow channels using a conventional non-continuous, one-by-one manufacturing method on a work surface using a rib plate welding method, and then added with drawstrings and inlet and outlet joints, or the drawstrings can be removed and replaced with hard joints to form small-sized soft plate photobioreactors one by one.

[0089] Among them, the super-long size (for example, 50-300 meters) baffle structure photobioreactor sheet can use the following continuous welding device and method to weld the ribs to form a flow channel, and then add drawstrings and inlet and outlet joints, or remove the drawstrings and replace them with hard joints to form an super-long soft plate photobioreactor.

[0090] Among them, of course, according to the understanding of those skilled in the art, the photobioreactor sheet with baffle structure of general size between short size and extra-long size can be welded by conventional non-continuous one-by-one manufacturing method on the work table to form a flow channel, and then add drawstrings and inlet and outlet joints, or remove the drawstrings and replace them with hard joints, and manufacture them one by one to form a soft plate photobioreactor of general size; it can also use the continuous welding device and method of the present invention to weld the ribs to form a flow channel, and then add drawstrings and inlet and outlet joints, or remove the drawstrings and replace them with hard joints to form a soft plate photobioreactor of general size.

[0091] Another object of the present invention is to provide a manufacturing device and a manufacturing method for automatically aligning and continuously, welding ribs of arbitrary length and large quantities of two (or one folded in half) photobioreactor sheets with baffle structures (hereinafter referred to as photobioreactor sheets) to form a flow channel of a soft plate type photobioreactor (and subsequently make a soft plate type photobioreactor) in response to the above-mentioned problems existing in the automatic alignment and continuous, arbitrary length and large-scale welding of ribs of two (or one folded in half) photobioreactor sheets with baffle structures (and subsequently make a soft plate type photobioreactor), so as to solve the problems existing in the manufacturing process of a soft plate type photobioreactor with an internal baffle structure, such as difficulty in welding ribs of two (or one folded in half) photobioreactor sheets with baffle structures, low production efficiency, excessively high manufacturing cost, difficulty in ensuring quality, and only the ability to manufacture small-sized soft plate type photobioreactors.

[0092] The invention provides a manufacturing device for welding two (or one folded in half) baffle-structured photobioreactor sheets at ribs to form a soft plate-type photobioreactor flow channel.

[0093] The manufacturing device for welding the sheet of the photobioreactor with a baffle structure at the rib plate to form a soft plate-type photobioreactor flow channel of the present invention comprises an unwinding device, a folding device, a first guide roller 94, a second traction device 95, a guide device, a welding device, a traction and winding device and a control device 913 which are sequentially arranged along the conveying direction of the sheet of the photobioreactor with a baffle structure, such as Fig. 9 .

[0094] The unwinding device is used to send out the baffle structure photobioreactor sheet along the conveying direction, and includes a mounting seat 91 and a roll rack 92; the mounting seat 91 is arranged on a guide rail parallel to the wide width (transverse) direction, and the left and right (transverse) position of the baffle structure photobioreactor sheet can be adjusted by sliding the mounting seat 91 on the guide rail; the roll rack 92 is arranged on the mounting seat 91; the roll rack 92 can be a double roll rack or a single roll rack; when two non-folding baffle structure photobioreactor sheets are used that are directly aligned face to face, the roll rack 92 is a double roll rack, and a roll of a non-folding sheet is placed on each of the two roll racks, and the two rolls of sheets are face to face and released at the same time, without It is directly transported to the first traction device 932 or directly transported to the first guide roller 94 through the folding device; when a folded-in-two layers of face-to-face folded photobioreactor sheet with baffle structure is used, the roll rack 92 is a single roll rack, on which a roll of folded sheet is placed, and the single roll rack releases the folded sheet to the folding device, which is directly transported to the first traction device 932 or directly transported to the first guide roller 94 after being folded by the folding device; the roll of photobioreactor sheet with baffle structure on the roll rack 92 rotates around its own axis under the traction of the first traction device 932 to release the sheet and is transported to the second guide roller 96 through the first guide roller 94 and the second traction device 95.

[0095] The folding device is used to fold the folding type baffle structure photobioreactor sheet along the folding line, and the folding device includes a tripod 931 and a first traction device 932; the tripod is as follows Fig.10 As shown, it includes a first edge 101, a second edge 102 and a third edge 103. The first edge 101 is parallel to the roll frame, and the point where the second edge 102 and the third edge 103 intersect is the vertex 104. The first traction device 932 includes two parallel rollers, the rotation axes of the two rollers are supported by supports at both ends, one or both of the two rollers can be connected to the driving device 123, and the driving device 123 can be a motor-driven coupling. The two rollers each include a rotation axis 121 and a pressure ring 122, and one or both are driven to rotate by the driving device 123; the pressure ring is sleeved on the rotation axis, the number of the pressure rings is at least 2, and each pressure ring is arranged at intervals, and the gap between two adjacent pressure rings is greater than or equal to the width of the baffle column on the baffle structure photobioreactor sheet. The function of the pressure ring is to press the sheet and pull the sheet forward. The gap between the pressure rings allows the area where the baffle on the baffle structure photobioreactor sheet is located to pass through the two rollers of the first traction device 932. The placement of the tripod 931 is as follows Fig.10 and Fig.11 As shown, the first edge 101 is parallel to the roll frame 92, the second edge 102 and the third edge 103 are placed obliquely, and the vertex 104 is close to the gap between the two rollers of the first traction device 932. When a folded photobioreactor sheet with a baffle structure is used to manufacture a soft plate photobioreactor, the folded photobioreactor sheet with a baffle structure is first laid on the first edge 101 to cover the tripod; at the same time, the folded photobioreactor sheet with a baffle structure covers the second edge 102, the third edge 103 and the vertex 104, the vertex of the folded photobioreactor sheet with a baffle structure is aligned with the vertex 104, folded at the vertex 104, and the folded photobioreactor sheet with a baffle structure is pulled to the gap between the two rollers of the first traction device 932.

[0096] The first guide roller 94 is used to convert two non-folded sheets directly aligned face to face or one folded sheet of photobioreactor sheet with baffle structure folded into two layers face to face into a horizontal conveyance.

[0097] The second traction device 95 is arranged between the first guide roller 94 and the second guide roller 96, and plays the role of traction and tensioning the sheet of the light bioreactor with baffle structure. The second traction device 95 includes two parallel rollers, the rotation axes of the two rollers are supported by the supports at both ends, one or both of the two rollers can be connected to the driving device 123, the driving device 123 can be a motor-driven coupling, the two rollers each include a rotating shaft 121 and a pressure ring 122, one or both are driven to rotate by the driving device 123; the pressure ring 122 is sleeved on the rotating shaft 121, the number of the pressure rings is at least 2, each pressure ring is arranged at intervals, and the gap between two adjacent pressure rings is greater than or equal to the width of the baffle column on the sheet of the light bioreactor with baffle structure. The function of the pressure ring is to press the sheet and pull the sheet forward, and the gap between the pressure rings allows the area where the baffle on the sheet of the light bioreactor with baffle structure is located to pass through the two rollers of the second traction device 95.

[0098] The surface of the pressure ring 122 of the second traction device 95 can be provided with a pattern, and the setting of the pattern can increase the friction between the pressure ring and the sheet material, and better drive the sheet material to be transported. At the same time, the pattern can also increase the welding effect of the sheet material, making the welding point more firm.

[0099] The second traction device 95 also plays a pressing role. The pneumatic device 124 connected to one of the two rollers is used to adjust the distance between the two rollers, and one roller is pressed toward the other roller to tension the ribs of two non-folded or one folded photobioreactor sheet with baffle structure that is directly aligned face to face between the two rollers, so that the photobioreactor sheet with baffle structure is transported forward smoothly and the ribs of the sheet do not deviate.

[0100] The guide device includes a plurality of second guide rollers 96 and a guide plate 97, which are used to convey two non-folded sheets directly aligned face to face or one folded sheet of baffle-structured photobioreactor sheets folded into two layers face to face, and ensure that the ribs of the baffle-structured photobioreactor sheets do not deviate during the conveying process.

[0101] The guide plate 97 is structured as follows: Fig.13 As shown, it includes a plurality of long strip plates 131 separated by a certain gap, the width of the long strip plates is equal to or slightly smaller than the column spacing of the baffles, and the gap between two adjacent long strip plates is equal to or slightly larger than the column width of the baffles.

[0102] The welding device is used to weld two non-folded sheets or one folded sheet with baffle structure directly aligned face to face into multiple parallel flow channel structures, and the weld seam serves as the rib plate of the flow channel. The weld seam is located in the middle of two adjacent rows of baffles. The welding device includes a heating element 98 and a pressing device 99, such as Figure 14-16shown.

[0103] The heating element 98 is arranged between the pressing device 99 and the guide plate 97 or on the pressing device 99 .

[0104] The heating element 98 includes an upper heating element 981 and a lower heating element 982, which are relatively arranged in the center position between two adjacent rows of baffles of two non-folded photobioreactor sheets directly aligned face to face or one folded photobioreactor sheet with baffle structure that is folded into two layers face to face. Depending on the heating method, the upper heating element and the lower heating element can be placed on the inner side or the outer side of the two layers of face to face photobioreactor sheets with baffle structure.

[0105] The heating methods of the heating element 98 include high temperature heating, ultrasonic heating, high frequency heating, pulse heating, friction heating, infrared heating or laser heating, etc., which can be achieved by the upper heating element 981 and the lower heating element 982. Among them, high temperature heating is suitable for the manufacture of soft plate-type photobioreactor flow channels of materials that are directly heated, such as Fig.14 As shown, at this time, the heating element 98 is arranged between the pressing device 99 and the guide plate 97, and can be arranged on the inside or outside of the flow channel formed by two non-folded sheets of photobioreactor sheets that are directly aligned face to face or folded into two layers of folded sheets with baffle structures. After passing through the guide plate 97, the sheet is heated, and the heated sheet is then hot-pressed and welded by the pressing ring of the pressing device. Ultrasonic heating is suitable for the manufacture of soft plate-type photobioreactor flow channels made of materials that are not suitable for direct heating. The ultrasonic heating element and the pressing device can be set as the same component, such as Fig.15 As shown; the high-frequency heating method is suitable for the manufacture of soft plate photobioreactor flow channels made of special materials such as PVC. The high-frequency heating element and the pressing device can be set as the same component, such as Fig.15 At this time, during the rotation of the pressing device 99, the pressing ring heats the inner side of the sheet by generating ultrasound or high-frequency vibration, and simultaneously directly performs hot-pressing welding on the outer side of the flow channel formed by the sheet.

[0106] The pressing device 99 is as follows Fig.16 As shown, it includes two parallel rollers 991 and 992, and the rotating shafts of the two rollers are supported by supports at both ends. One or both of the two rollers can be connected to the driving device 123, and the driving device 123 can be a motor-driven coupling. The two rollers include a rotating shaft 121 and a pressure ring 122, and one or both are driven to rotate by the driving device 123; the pressure ring can be mounted on the rotating shaft, and can also be integrally formed with the rotating shaft. The number of the pressure rings is at least 2, and the pressure rings are arranged at intervals, and the gap between two adjacent pressure rings is greater than or equal to the column width of the baffle.

[0107] The surface of the pressing ring 122 of the pressing device 99 can be provided with a pattern, and the setting of the pattern can increase the friction between the pressing ring and the sheet material, and better drive the sheet material to be transported. At the same time, the pattern can also increase the welding effect of the sheet material, making the welding point more firm.

[0108] The welding process is to adjust the distance and pressure between the two rollers 991 and 992, and press one roller against the other roller to press and weld the photobioreactor sheet with baffle structure.

[0109] The pressing device 99 also includes a crossbeam 993 arranged above the roller 991 and a plurality of pressure wheels 994 arranged on the crossbeam; the pressure wheel 994 is arranged between two adjacent pressure rings, and the bottom of the pressure wheel 994 is close to the upper part of the rotating shaft of the roller 991. When in use, the distance between different pressure wheels and the crossbeam can be adjusted to make the pressure of each pressure ring on the rib plate on the pressing device 99 consistent.

[0110] The traction and winding device includes a third traction device 910, a cross-cutting device 911 and a winding device 912. The third traction device 910 includes two parallel rollers. The rotating shafts of the two rollers are supported by supports at both ends. One or both of the two rollers can be connected to the driving device 123. The driving device 123 can be a motor-driven coupling. The two rollers each include a rotating shaft 121 and a pressure ring 122. One or both are driven to rotate by the driving device 123. The pressure ring is sleeved on the rotating shaft. The number of the pressure rings is at least 2. The pressure rings are arranged at intervals, and the gap between two adjacent pressure rings is greater than or equal to the column width of the baffle.

[0111] In the present invention, the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910 all include two parallel rollers, both rollers include a rotating shaft 121 and a pressure ring 122; the pressure ring 122 is sleeved on the rotating shaft 121, the rotating shafts of the two rollers are supported by the supports at both ends, the two rollers are connected to the driving device 123, one of the two rollers is connected to the pneumatic device 124 or both rollers are connected to the pneumatic device 124, the two parallel rollers can be arranged up and down or left and right as needed; preferably, they can be arranged vertically up and down or horizontally left and right; the two rollers can be hard rollers, or rubber rollers, or one can be a hard roller and the other can be a rubber roller. One of the two parallel rollers can be selected or both rollers can be selected to connect to the pneumatic device 124, and the pneumatic device 124 is used to separate the two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910.

[0112] A cross-cutting device 911 is provided between the third traction device 910 and the winding device 912. The third traction device 910 draws the welded baffle structure photobioreactor sheet into the winding device 912. When the winding device 912 completes the winding of one roll, the cross-cutting device 911 cuts the baffle structure photobioreactor sheet, and the manufacture of the flow channel of the soft plate type photobioreactor is completed.

[0113] The unwinding device, the first traction device 932, the second traction device 95, the heating element 98, the laminating device 99, the third traction device 910, the cross-cutting device 911 and the winding device 912 are all connected to the control device 913 by signal, the control device is connected to the central control device by signal, and the central control device is connected to the terminal server by signal.

[0114] The manufacturing device also includes a machine table 914, and the unwinding device, the first traction device 932, the second traction device 95, the heating element 98, the laminating device 99, the third traction device 910, and the cross-cutting device 911 are arranged on the machine table 914. The control device 913 can be arranged on the machine table 914 or other positions of the manufacturing device described in the present invention.

[0115] The present invention also provides a method for welding the non-folding type or folding type photobioreactor sheet with baffle structure at the rib plate to form a soft plate type photobioreactor flow channel by using the manufacturing device.

[0116] The method of welding the baffle-structured photobioreactor sheet at the rib plate to form a soft plate-type photobioreactor flow channel of the present invention comprises the following steps:

[0117] 1. Turn on the external power supply and the external air source, supply air to the pneumatic device 124, and use the pneumatic device 124 to separate the two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910;

[0118] 2. Setting the operating temperature of the heating element 98 to preheat the heating element 98;

[0119] 3. After the temperature of the heating element 98 reaches the working temperature, the two non-folded or one folded photobioreactor sheets with baffle structures to be welded are pulled out from the unwinding device, directly aligned face to face or folded into two layers face to face by the folding device, and then placed between the two rollers of the first traction device 932 or directly placed on the first guide roller 94, and converted into horizontal movement by the guidance of the first guide roller 94, and then guided by the second traction device 95 and the second guide roller 96. The photobioreactor sheets that are directly aligned face to face or folded into two layers face to face pass through the guide plate 97, pass between the two rollers of the pressing device 99, and arrive between the two rollers of the third traction device 910, and ensure that during the traction process, the photobioreactor sheets with baffle structures that are directly aligned face to face or folded into two layers face to face by the folding device are aligned left and right, and the heating element 98 is located in the center between two adjacent rows of baffles of the photobioreactor sheets with baffle structures;

[0120] 4. The two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910 are moved by the pneumatic device 124 until the two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910 are in contact with the non-baffle area of ​​the photobioreactor sheet, and the pressure between the two rollers is controlled by adjusting the input air pressure to tension the photobioreactor sheet with baffle structure that is directly aligned face to face or folded into two layers face to face by the folding device;

[0121] 5. Control the driving device 123 of the first traction device 932 and the second traction device 95 to rotate, and drive the driving device 123 to drive the horizontal transportation of the baffle structure photobioreactor sheet that is directly aligned face to face or folded into two layers face to face by the folding device, and the heating element 98 is in front and the pressing device 99 is in the back along the conveying direction, and the spacing of the pressing wheel 994 on the crossbeam 993 is adjusted to keep the pressure of the welding parts of all the baffle structure photobioreactor sheets consistent during welding. The heating element 98 heats and melts the face-to-face photobioreactor sheets, and the pressing device 99 is used to press and weld the molten sheet parts, and the pressing parts (i.e., welds) serve as the ribs of the soft plate type photobioreactor; the two non-folded sheets directly aligned face to face or folded into two layers face to face by the folding device after welding are rolled up by the rolling device, and cut by the cross-cutting device 911 when the set size is reached;

[0122] 6. Replace the photobioreactor sheet with baffle structure at the unwinding device, repeat steps 3 to 5, and weld the next batch of photobioreactor sheets with baffle structure;

[0123] 7. After welding is completed, the pneumatic device 124 is adjusted to move the two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910, so that the two rollers of the first traction device 932, the two rollers of the second traction device 95, the two rollers of the pressing device 99 and the two rollers of the third traction device 910 are separated, and the heating of the heating element 98 is stopped. When the temperature of the heating element 98 drops to room temperature, the power supply and the gas source are turned off.

[0124] The manufacturing device and method for welding the baffle-structured photobioreactor sheet at the rib plate to form a soft plate-type photobioreactor flow channel described in the present invention can use the baffle-structured photobioreactor sheet of any length as feed material, and after welding to form the soft plate-type photobioreactor flow channel, add a pull belt and an inlet and outlet joints, or add a hard joint to form a soft plate-type photobioreactor.

[0125] The present invention further provides a soft plate type photobioreactor, which comprises the soft plate type photobioreactor flow channel and joints arranged at both ends of the soft plate type photobioreactor flow channel.

[0126] The joint may be a hard joint, which is composed of a main pipe (main pipe, thick pipe) connected to a culture fluid delivery device (e.g., a pump) and a branch pipe (branch pipe, thin pipe) connected to a flow channel of a soft plate-type photobioreactor, and may be made of any hard material that is harmless to the culture process.

[0127] Compared with the prior art, the advantages of the photobioreactor sheet with baffle structure, the integral one-step molding manufacturing device and the manufacturing method provided by the present invention are:

[0128] 1. The length of the sheet of the photobioreactor with baffle structure can be customized according to demand, so that the length of the prepared single soft plate photobioreactor can be extended arbitrarily. When constructing a large-scale soft plate photobioreactor microalgae cultivation system on site, it can be cut arbitrarily according to the site to construct an ultra-long (for example, 50-300 meters, or even longer) single soft plate photobioreactor, which can greatly reduce the number of connections of the soft plate photobioreactor, realize rapid construction, greatly reduce the construction cost of the microalgae cultivation system, and can also greatly reduce the flow resistance of the soft plate photobioreactor microalgae cultivation system and reduce the risk of damage to the soft plate photobioreactor. However, the soft plate photobioreactors described in ZL201420323929.3 and ZL201410270445.1 can only be manufactured one by one on a work surface in a non-continuous manner, and can only manufacture small-sized (for example, 2 meters) soft plate photobioreactors. When using it to construct a large-scale soft plate photobioreactor microalgae cultivation system, it is necessary to connect hundreds of single soft plate photobioreactors in series, which is not only cumbersome in construction, but also the introduction of hundreds of connecting devices (pipes and joints) will greatly increase the flow resistance of the photobioreactor microalgae cultivation system, increase the risk of damage to the soft plate photobioreactor and increase the energy consumption of the culture fluid drive.

[0129] 2. The substrate and baffle of the photobioreactor sheet with baffle structure can be integrally formed at one time, which reduces the manufacturing process of the photobioreactor sheet with baffle structure, realizes continuous production, greatly improves production efficiency, and reduces the manufacturing cost of the soft plate photobioreactor.

[0130] 3. The device provided by the present invention optimizes the ratio of the diameter of the middle roller and the height of the baffle so that the contact part between the middle roller and the lower roller maintains an appropriate curvature, thereby solving the problem of baffle molding during molding and easy deformation of the baffle during demolding; the negative pressure environment inside the groove solves the problem that the baffle cannot fill the groove; the concave platform structure at the junction of the top of the groove and the sheet material makes the bottom of the baffle a raised convex platform structure, thereby solving the problem that the sheet material is easily torn at the root of the baffle during demolding. The above series of optimized designs solve the problems of the baffle being difficult to mold due to the excessive ratio of the baffle height to the thickness of the soft light-transmitting film material and the sheet material being easily torn at the root of the baffle during demolding, thereby ensuring the continuous production of the photobioreactor sheet with the baffle structure.

[0131] 4. The folding device, traction device and guide device provided by the present invention can realize the smooth transportation of the photobioreactor sheet with baffles after folding. After ensuring the initial alignment of the sheets, the manpower consumption for adjusting the alignment during transportation and the problem of unstable flow channel quality are reduced, the cost of manufacturing the flow channel of the soft plate photobioreactor is reduced, and the quality of the flow channel of the soft plate photobioreactor is improved.

[0132] 5. The manufacturing device and manufacturing method provided by the present invention solve the problems of over-welding damage and loose welding caused by inconsistent pressure during welding of various flow channel ribs in the process of continuous welding of multiple flow channels of arbitrary length, achieve the stability of flow channel welding quality, and improve the quality of the flow channel of the soft plate type photobioreactor.

[0133] 6. The manufacturing device and manufacturing method provided by the present invention realize the continuous manufacturing of the flow channel of the soft plate type photobioreactor, and can realize the manufacturing of the flow channel of the soft plate type photobioreactor of any length, solving the difficult problem of manufacturing the flow channel of a large soft plate type photobioreactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0134] FIG. 1( a ) is a top view of a repeating unit of a non-folded photobioreactor sheet with a baffle structure;

[0135] FIG1( b ) is a top view of a repeating unit of a folded photobioreactor sheet with a baffle structure;

[0136] FIG. 2( a ) is a front view of the cross-sectional shape of a single baffle on a photobioreactor sheet with a baffle structure;

[0137] FIG2( b ) is a front view of the cross-sectional shape of a single baffle with a raised boss structure at the bottom on a photobioreactor sheet with a baffle structure;

[0138] Figure 3 A schematic diagram of a device for manufacturing a photobioreactor sheet with a baffle structure;

[0139] Figure 4 A plan view of a solid forming device for manufacturing non-folded and folded photobioreactor sheets with solid baffle structures;

[0140] Figure 5 A plan view of a hollow forming device for manufacturing non-folded and folded photobioreactor sheets with hollow baffle structures;

[0141] Figure 6 This is a product picture of a photobioreactor sheet with a baffle structure;

[0142] Figure 7 It is a schematic diagram of a thin film synchronous composite device;

[0143] Figure 8 This is a product picture of a soft plate photobioreactor;

[0144] Fig. 9 It is a structural schematic diagram of a single roll-up soft plate photobioreactor flow channel manufacturing device;

[0145] Fig.10 It is a schematic diagram of the structure of a tripod for a folding device;

[0146] Fig.11 A schematic diagram of a folding method of the folding device;

[0147] Fig.12 It is a front view of one of the two rollers in parallel;

[0148] Fig.13 is a top view of the guide plate;

[0149] Fig.14 A schematic diagram of the location of a heating element;

[0150] Fig.15 A schematic diagram of another arrangement position of a heating element;

[0151] Fig.16 It is a structural schematic diagram of a pressing device;

[0152] Fig.17 This is a schematic diagram of the structure of a double-roll-frame soft plate photobioreactor flow channel manufacturing device.

[0153] Reference numerals:

[0154] 11. substrate; 12. baffle; A', central axis; B', fold line; 21. rectangular baffle; 22. triangular baffle; 23. trapezoidal baffle; 24. semicircular baffle; 31. premixing device; 32. vacuum feeder; 33. extruder; 34. screen filter; 35. melt pump; 36. hanger head; 37. molding device; 38. trimming device; 39. cooling rack; 310. first traction device; 311. material storage Frame; 312, second traction device; 313, transverse cutting device; 314, winding device; 41, upper roller; 42, middle roller; 43, lower roller; C', central axis; 44, long strip groove; 45, driving device; 46, bracket; 51, upper roller; 52, middle roller; 53, lower roller; 54, long strip groove; 55, driving device; 56, bracket; 57, long strip protrusion; D', central axis; 71, finished film; 72, Conveyor; 91, mounting seat; 92, roll rack; 921, folded light bioreactor sheet with baffle structure; 922, welded light bioreactor sheet with baffle structure; 931, triangular plate; 932, first traction device; 94, first guide roller; 95, second traction device; 96, second guide roller; 97, guide plate; 98, heating element; 99, pressing device; 910, third traction device; 911, cross-cutting Device; 912, winding device; 913, control device; 914, machine table; 101, first edge; 102, second edge; 103, third edge; 104, vertex; 121, rotating shaft; 122, pressure ring; 123, driving device; 124, pneumatic device; 131, long strip plate; 981, upper heating element; 982, lower heating element; 991, upper roller; 992, lower roller; 993, crossbeam; 994, pressure wheel. DETAILED DESCRIPTION

[0155] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0156] Example 1 Non-folding photobioreactor sheet with baffle structure

[0157] It is composed of a plurality of non-folding sheet repeating units connected end to end as shown in FIG1( a ). In the non-folding sheet repeating unit, the area where the baffle 12 is located is composed of a plurality of baffles 12 and a substrate 11 connected to the baffle, and the two are an integral structure.

[0158] The row spacing of the baffles is 10-200 mm, the distance between the first row of baffles and the edge of the sheet repeating unit is 10-400 mm, and the distance between the last row of baffles and the edge of the sheet repeating unit is 10-400 mm.

[0159] The number of baffle rows of the non-folding sheet repeating unit is 2-200 rows.

[0160] The row spacing of the baffles is 10mm-300mm, and the distance between the outermost row of baffles and the edge of the sheet repeating unit is 10-300mm.

[0161] The number of baffle columns of the non-folding sheet repeating unit is 1-100.

[0162] The width of the non-folding photobioreactor sheet with baffle structure is 30mm-20000mm.

[0163] The baffle is in the shape of an elongated strip, and the angle between the length direction of the baffle and the central axis A' is 20-70°.

[0164] The cross-sectional shape of the baffle is rectangular, and the thickness of the rectangular baffle is 1-10 mm.

[0165] The length of the baffle is 5-300 mm, and the height (ie the height of the cross section of the baffle itself) is 1-20 mm.

[0166] The baffle is a solid structure, the thickness of the substrate is 0.05-3 mm, and the substrate is a single-layer structure.

[0167] The thickness of the substrate between the two rows of baffles is 1-5 times the thickness of the substrate at other positions. The connection between the baffle and the substrate is arc-shaped.

[0168] Example 2 Non-folding photobioreactor sheet with baffle structure

[0169] Different from the first embodiment, the cross-section of the baffle is a trapezoid, and the thickness of the trapezoidal baffle at the half height is 1-10 mm. The baffle is a hollow structure.

[0170] The back side of the baffle with the hollow structure may be an open groove structure, or may be a closed surface with an open part formed by combining a film and a substrate.

[0171] The substrate is a multi-layer structure.

[0172] Example 3 Folding photobioreactor sheet with baffle structure

[0173] As shown in Figure 1(b), the folding photobioreactor sheet with baffle structure of the present invention is composed of multiple folding sheet repeating units connected end to end. In the folding sheet repeating unit, the area where the baffle 12 is located is distributed on both sides of the folding line B'. The area where the baffle 12 is located is composed of multiple baffles 12 and a substrate 11 connected to the baffle, and the two are an integrated structure, made of polyethylene, with a thickness of 0.5mm, a single-layer structure, a width of 2140mm, and a length of 1504mm. The baffle 12 is a solid structure, and the area where the baffle is located is distributed on both sides of the folding line B'. The substrate 11 on both sides of the folding line contains 208 baffles respectively, arranged in 13 rows * 10 columns. The length of the baffle 12 is 60mm, the height is 8mm, the cross-section is rectangular, the thickness is 3mm, the angle with the folding line is 30°, and the spacing between the baffle rows is 110mm. The distance between the first row of baffles on the left side of the fold line and the edge of the sheet repeating unit is 50mm, and the distance between the last row of baffles on the left side of the fold line and the edge of the sheet repeating unit is 102mm; the distance between the first row of baffles on the right side of the fold line and the edge of the sheet repeating unit is 102mm, and the distance between the last row of baffles on the right side of the fold line and the edge of the sheet repeating unit is 50mm. The distance between the baffle columns is 70mm, the distance between the outermost columns on both sides of the fold line and the edge of the sheet repeating unit is 70mm, and the distance between the innermost columns of baffles on both sides of the fold line and the fold line is 70mm.

[0174] Example 4: Folding photobioreactor sheet with baffle structure

[0175] Different from the third embodiment, the cross-section of the baffle is a trapezoid, and the thickness of the trapezoidal baffle at the half height is 1-10 mm. The baffle is a hollow structure.

[0176] The back side of the baffle with the hollow structure may be an open groove structure, or may be a closed surface with an open part formed by combining a film and a substrate.

[0177] The substrate is a multi-layer structure.

[0178] Example 5: An integral one-step molding manufacturing device and manufacturing method for a foldable photobioreactor sheet with a baffle structure

[0179] like Figure 3As shown, a manufacturing device for a foldable photobioreactor sheet with a baffle structure as described in Example 3 includes a material extrusion device for melting and conveying raw materials of baffle and substrate materials and a functional masterbatch containing processing aids (hereinafter referred to as material), a molding device 37 for molding the photobioreactor sheet with a baffle structure, a trimming device 38 for trimming the edge of the photobioreactor sheet with a baffle structure, a cooling rack 39 for further cooling the photobioreactor sheet with a baffle structure, a first traction device 310 for pulling the photobioreactor sheet with a baffle structure, a material storage rack 311, a second traction device 312 for pulling the photobioreactor sheet with a baffle structure, a transverse cutting device 313 for cutting the photobioreactor sheet with a baffle structure along the width direction, and a winding device 314 for winding the photobioreactor sheet.

[0180] The material extrusion device includes a premixing device 31 for material mixing, a vacuum feeder 32 for conveying premixed materials, a single screw extruder 33 for melting and conveying materials, a screen filter 34 for removing impurities, a melt pump 35 for conveying, pressurizing and metering molten materials, and a hanger-type die head 36.

[0181] The forming device 37 is as follows Figure 4 The solid forming device shown includes an upper roller 41, a middle roller 42, a lower roller 43, and a driving device 45 for driving the upper roller 41, the middle roller 42, and the lower roller 43 to rotate. The above devices are all installed on a bracket 46. There are 516 long strip grooves 44 arranged in rows and columns on the middle roller 42. The size of the long strip grooves 44 is 60*3*8mm, and there are multiple micro holes at the bottom of the groove. An air suction pump is provided inside the middle roller 42, and the air suction pump is used to perform negative pressure suction so that the material can fill the long strip grooves 44. The width of the upper roller 41, the middle roller 42, and the lower roller 43 is 2500mm and the diameter is 479mm. The upper roller, the middle roller, and the lower roller are each driven by a driving device 45 on the left and right through a reducer transmission gear box, so that the distance between the rollers can be adjusted separately or simultaneously at both ends. The bracket 46 can be driven by a motor to move forward and backward to facilitate waste cleaning.

[0182] First, heat up the material extrusion device. When the set temperature is reached, move the molding device 37 close to the hanger head 36, add the material to the premixing device 31, turn on the power of the premixing device 31, premix for 10 minutes, and turn on the power of the vacuum feeder 32 for feeding.

[0183] The single screw extruder 33 is started, and the driving device 45 of the molding device 37 is started to drive the upper roller 41, the middle roller 42 and the lower roller 43 to rotate, and the molten material is extruded through the hanger head 36 to obtain a flat sheet material, and the flat sheet material is sent to the molding device 37, and is pulled to the gap between the middle roller 42 and the lower roller 43, and the distance between the middle roller 42 and the lower roller 43 is adjusted to control the thickness of the substrate 11, and the middle roller 42 and the lower roller 43 cooperate to roll, so that the baffle 12 is formed on the flat sheet material, and the following is obtained. Figure 6 The photobioreactor sheet with baffle structure is initially formed as shown. The suction pump generates negative pressure, so that the material fills the long strip groove 44, so that the baffle structure is completely the same as the long strip groove 44.

[0184] The initially formed photobioreactor sheet with baffle structure is pulled between the upper rollers 41 and 42 for demoulding and further cooled and shaped. After being led out from the upper part of the upper roller 41, the edge is trimmed by the trimming device 38, and the sheet is pulled between the two rollers of the first traction device 310 through the cooling rack 39. The distance between the two rollers is adjusted to clamp the initially formed photobioreactor sheet with baffle structure to keep it in a tensioned state. Then, it is further pulled between the two rollers of the storage rack 311 and the second traction device 312, and is wound by the winding device 314. When the photobioreactor sheet with baffle structure reaches the set length, it is cut by the transverse cutting device 313.

[0185] The manufacturing equipment and method provided in this embodiment can be used to manufacture photobioreactor sheets with baffle structures, which can achieve overall one-time molding and continuous production. The length of photobioreactor sheets with baffle structures can reach more than 50 meters per hour. Compared with the original two-step process of baffle manufacturing and secondary welding, the production efficiency is greatly improved and the manufacturing cost of the photobioreactor sheets is greatly reduced.

[0186] Example 6: Device and method for manufacturing a foldable photobioreactor sheet with a baffle structure

[0187] The other parts are the same as those in Example 5, except that the baffle of the photobioreactor sheet with baffle structure is a hollow structure, and the baffle wall thickness is 1 mm. Figure 5The hollow forming device shown comprises an upper roller 51, a middle roller 52, a lower roller 53, and a driving device 55 for driving the upper roller 51, the middle roller 52, and the lower roller 53 to rotate. The above devices are all mounted on a bracket 56. The middle roller 52 has 516 long strip grooves 54 arranged in rows and columns, and the lower roller 53 has 516 long strip protrusions 57 arranged in rows and columns. The long strip grooves 54 have a size of 60*3*8mm, and a plurality of micro holes are arranged at the bottom of the groove. An air suction pump is arranged inside the middle roller 52, and the air suction pump is used to perform negative pressure suction so that the material can fill the long strip grooves 54. The long strip protrusions have a size of 59*2*7mm, and the width of the upper roller 51, the middle roller 52, and the lower roller 53 is 2500mm, and the diameter is 479mm.

[0188] During extrusion molding, the middle roller 52 and the lower roller 53 cooperate to roll the flat sheet material to form a hollow baffle structure, wherein an air pump is provided inside the middle roller to draw air to form a negative pressure, so that the flat sheet material completely adheres to the surface of the middle roller, and the outer wall structure of the baffle is exactly the same as the structure of the long strip groove 54.

[0189] The manufacturing equipment and method provided in this embodiment can realize one-step molding and continuous production of the photobioreactor sheet with baffle structure. The length of the photobioreactor sheet with baffle structure can reach more than 50 meters per hour. Compared with the original two-step process of baffle manufacturing and secondary welding, the production efficiency is greatly improved. In addition, since the baffle structure is a hollow structure, the material consumption of the photobioreactor sheet with baffle structure can be reduced by about 300 grams per square meter, which can further reduce the manufacturing cost of the photobioreactor sheet.

[0190] Example 7: Manufacturing device and manufacturing method of foldable photobioreactor sheet with baffle structure

[0191] The other parts are the same as those of Example 6, except that the baffle of the photobioreactor sheet with baffle structure is a hollow structure, and the back of the baffle is a closed surface. Figure 7 The film synchronous compounding device shown. The film synchronous compounding device includes a finished film 71 and a conveyor 72. During extrusion molding, the baffle structure photobioreactor sheet and the finished film 71 are pulled between the upper roller 51 and the middle roller 52, and the finished film is closely attached to the upper roller 51. The distance between the upper roller 51 and the middle roller 52 is adjusted to clamp the baffle structure photobioreactor sheet and the finished film. The upper roller 51 and the middle roller 52 cooperate to roll and press, and the back of the baffle structure photobioreactor sheet and the finished film are compounded without glue while demoulding, so that the back of the hollow baffle is a closed surface.

[0192] The manufacturing equipment and method provided in this embodiment can realize one-step molding and continuous production of the photobioreactor sheet with baffle structure. The length of the photobioreactor sheet with baffle structure can reach more than 50 meters per hour. Compared with the two-step process of the original baffle manufacturing and secondary welding, the production efficiency is greatly improved. In addition, since the baffle structure is a closed hollow structure, the gas inside the baffle can effectively improve the strength of the baffle, and the wall thickness of the baffle can be further reduced, which further reduces the material consumption of the photobioreactor sheet with baffle structure and reduces the manufacturing cost.

[0193] Example 8: Device for manufacturing a non-folding photobioreactor sheet with a baffle structure

[0194] The manufacturing device and manufacturing method of any one of Embodiments 5-7 are used, but the difference from Embodiment 5-7 is that the middle roller and the lower roller are half the length of the middle roller and the lower roller in Embodiment 5-7, for example Figure 4 C' or Figure 5 The left area or the right area of ​​D'.

[0195] Example 9

[0196] The rest is the same as in Examples 5-8, except that the photobioreactor sheet with baffle structure is directly used to manufacture the soft plate type photobioreactor flow channel and the soft plate type photobioreactor, and the first traction device 310 or the forming device of the manufacturing device of Examples 5-8 directly transports the photobioreactor sheet with baffle structure to the feeding device of the manufacturing device of the soft plate type photobioreactor flow channel.

[0197] The manufacturing device and method provided in this embodiment are used to manufacture the photobioreactor sheet with baffle structure, omitting the winding and unwinding processes, realizing continuous production and manufacturing, which can greatly reduce equipment investment and labor expenses, and further reduce the manufacturing cost of the soft plate photobioreactor.

[0198] Example 10

[0199] like Fig. 9 As shown, a manufacturing device for welding a folded photobioreactor sheet with a baffle structure at the rib plate to form a soft plate photobioreactor flow channel includes a reeling device, a folding device, a first guide roller 94, a second traction device 95, a guide device, a welding device, a traction and reeling device and a control device 913 which are arranged in sequence along the conveying direction of the photobioreactor sheet with a baffle structure.

[0200] The unwinding device is used to send out the baffle structure photobioreactor sheet along the conveying direction, and includes a mounting seat 91 and a roll rack 92; the mounting seat 91 is installed on a guide rail parallel to the wide width (transverse) direction, and the left and right (transverse) position of the baffle structure photobioreactor sheet can be adjusted by sliding the mounting seat 91 on the guide rail; the roll rack 92 is arranged on the mounting seat 91; a folded baffle structure photobioreactor sheet is used, which is folded into two layers facing each other, and the roll rack 92 is a single roll rack, on which a roll of a folded sheet is placed, and the single roll rack releases the folded sheet to the folding device, which is folded by the folding device and conveyed to the first guide roller 94; the baffle structure photobioreactor sheet roll on the roll rack 92 rotates around its own axis under the traction of the first traction device 932 to release the sheet and is conveyed to the second guide roller 96 through the first guide roller 94 and the second traction device 95.

[0201] The folding device is used to fold the folding type baffle structure photobioreactor sheet along the folding line, and the folding device includes a tripod 931 and a first traction device 932; the tripod is as follows Fig.10 As shown, it includes a first edge 101, a second edge 102 and a third edge 103. The first edge 101 is parallel to the roll frame 92, and the vertex where the second edge 102 and the third edge 103 intersect is 104. The first traction device 932 includes two parallel rollers, the rotation axes of the two rollers are supported by supports at both ends, and the two rollers are respectively connected to the driving device 123, and the driving device 123 is a motor-driven coupling. The two rollers each include a rotating shaft 121 and a pressure ring 122, as shown in FIG. Fig.12 As shown; the pressure ring is sleeved on the rotating shaft, the diameter of the rotating shaft is 150mm, the outer diameter of the pressure ring is 180mm, the inner diameter is 150mm, and the width is 50mm. The pressure ring 122 is sleeved on the rotating shaft 121, the number of pressure rings is 11, and the gap between any two adjacent pressure rings is 50mm. The function of the pressure ring is to press the sheet and pull the sheet forward. The gap between the pressure rings allows the area where the baffle on the sheet of the photobioreactor with baffle structure is located to pass through the two rollers of the first traction device 932. The tripod 931 is placed as shown in the following figure. Fig.10 and Fig.11As shown, the first edge 101 is parallel to the roll frame 92, the second edge 102 and the third edge 103 are placed obliquely, and the vertex 104 is close to the gap between the two rollers of the first traction device 932. A soft plate-type photobioreactor is manufactured by using a folded-in-two-layer photobioreactor sheet with a baffle structure, firstly, the folded-in-two-layer photobioreactor sheet with a baffle structure is laid on the first edge 101 to cover the tripod; at the same time, the folded-in-two-layer photobioreactor sheet with a baffle structure covers the second edge 102, the third edge 103 and the vertex 104, the vertex of the fold line of the folded-in-two-layer photobioreactor sheet with a baffle structure is aligned with the vertex 104, folded in half at the vertex 104, and the folded photobioreactor sheet with a baffle structure is pulled to the gap between the two rollers of the first traction device 932.

[0202] The first guide roller 94 is a smooth roller with a diameter of 60 mm and a width of 1500 mm, and is used to transform the folded photobioreactor sheet into a sheet to be transported in a horizontal direction.

[0203] The second traction device 95 is arranged between the first guide roller 94 and the second guide roller 96, and plays the function of traction and tensioning the photobioreactor sheet with baffle structure. The second traction device 95 includes two rollers arranged in parallel, and the rotating shafts of the two rollers are supported by the supports at both ends. Both rollers are connected to the driving device 123, and the driving device 123 is a motor-driven coupling. Both rollers include a rotating shaft 121 and a pressure ring 122; the pressure ring 122 is sleeved on the rotating shaft 121, and the rotating shaft diameter is 150mm, the outer diameter of the pressure ring is 180mm, the inner diameter is 150mm, and the width is 50mm. The pressure ring 122 is sleeved on the rotating shaft 121, and the number of pressure rings is 11, and the gap between any two adjacent pressure rings is 50mm.

[0204] The surface of the pressure ring 122 of the second traction device 95 is provided with a pattern, and the setting of the pattern can increase the friction between the pressure ring and the sheet material, and better drive the sheet material to be transported. At the same time, the pattern can also increase the welding effect of the sheet material, making the welding point more firm.

[0205] The second traction device 95 also plays a pressing role. The pneumatic device 124 connected to one of the two rollers is used to adjust the distance between the two rollers, and one roller is pressed toward the other roller to tension the ribs of two non-folded or one folded photobioreactor sheet with baffle structure that is directly aligned face to face between the two rollers, so that the photobioreactor sheet with baffle structure is transported forward smoothly and the ribs of the sheet do not deviate.

[0206] The guide device includes four second guide rollers 96 and one guide plate 97. The second guide roller 96 is a smooth roller with a diameter of 60 mm and a width of 1500 mm. The photobioreactor sheet with baffle structure passes through the lower part of the first second guide roller, the upper part of the second second guide roller, the lower part of the third second guide roller, the upper part of the fourth second guide roller, and enters the guide plate 97 in sequence.

[0207] The guide plate 97 is structured as follows: Fig.13 As shown, it includes 11 long strip plates 131 separated by a certain gap, the width of the long strip plate is 60 mm, and the gap between two long strip plates is 40 mm.

[0208] The welding device includes a heating element 98 and a pressing device 99. The heating element 98 includes an upper heating element 981 and a lower heating element 982. The upper heating element 981 and the lower heating element 982 are arranged at the ends of the long strip plate 131 of the guide plate 97, such as Fig.14 As shown, the heating element is used to heat the inner side of two folded layers of photobioreactor sheets with baffle structures facing each other, the heating element is 20 mm long, 10 mm wide, made of stainless steel, and electrically heated by a thermocouple.

[0209] The pressing device 99 is as follows Fig.16 As shown, it includes two parallel rollers 991 and 992, which are arranged vertically up and down and arranged on both sides of the overlapping part of the sheet with baffle after folding. The rotating shafts of the two rollers are supported by the supports at both ends. Both rollers are connected to the driving device 123, and the driving device 123 is a motor-driven coupling. The two rollers include a rotating shaft 121 and a pressure ring 122; the pressure ring is sleeved on the rotating shaft, the rotating shaft 121 has a diameter of 100mm, the outer diameter of the pressure ring is 130mm, the inner diameter is 100mm, and the width is 15mm. The pressure ring 122 and the rotating shaft 121 are an integrally formed structure, the number of pressure rings is 11, and the gap between any two pressure rings is 50mm.

[0210] The surface of the pressing ring 122 of the pressing device 99 is provided with a pattern, and the setting of the pattern can increase the friction between the pressing ring and the sheet material, and better drive the sheet material to be transported. At the same time, the pattern can also increase the welding effect of the sheet material, making the welding point more firm.

[0211] The welding process is to adjust the distance and pressure between the two rollers 991 and 992, and press one roller against the other roller to press and weld the photobioreactor sheet with baffle structure.

[0212] The pressing device 99 also includes a crossbeam 993 arranged above the roller 991 and a plurality of pressure wheels 994 arranged on the crossbeam; the pressure wheel 994 is arranged between two adjacent pressure rings, and the pressure wheel 994 is close to the rotating axis of the roller 991. When in use, the distance between different pressure wheels and the crossbeam can be adjusted to make the pressure of each pressure ring on the rib plate on the pressing device 99 consistent.

[0213] The traction and winding device includes a third traction device 910, a cross-cutting device 911 and a winding device 912. The third traction device 910 includes two parallel rollers. The rotating shafts of the two rollers are supported by supports at both ends. Both rollers are connected to a driving device 123. The driving device 123 is a motor-driven coupling. Both rollers include a rotating shaft 121 and a pressure ring 122. The rotating shaft has a diameter of 150 mm, and the pressure ring has an outer diameter of 180 mm, an inner diameter of 150 mm, and a width of 50 mm. The pressure ring 122 is sleeved on the rotating shaft 121. The number of pressure rings is 11, and the gap between any two adjacent pressure rings is 50 mm.

[0214] A cross-cutting device 911 is provided between the third traction device 910 and the winding device 912. The third traction device 910 draws the welded baffle structure photobioreactor sheet into the winding device 912. When the winding device 912 completes the winding of one roll, the cross-cutting device 911 cuts the baffle structure photobioreactor sheet, and the manufacture of the flow channel of the soft plate type photobioreactor is completed.

[0215] The unwinding device, the first traction device 932, the second traction device 95, the heating element 98, the laminating device 99, the third traction device 910, the cross-cutting device 911 and the winding device 912 are all connected to the control device 913 by signal, the control device is connected to the central control device by signal, and the central control device is connected to the terminal server by signal.

[0216] The manufacturing device also includes a machine platform 914 , and the unwinding device, the first traction device 932 , the second traction device 95 , the heating element 98 , the laminating device 99 , the third traction device 910 , and the cross-cutting device 911 are arranged on the machine platform 914 , and the control device 913 can be arranged on the machine platform 914 .

[0217] The winding device 912 is connected to the driving device 123 and is used to drive the welded photobioreactor sheet to be wound.

[0218] The process of manufacturing the flow channel of the soft plate-type photobioreactor using the device:

[0219] 1. Turn on the external power supply and the external air source, supply air to the pneumatic device 124, and use the pneumatic device to separate the two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910;

[0220] 2. Setting the operating temperature of the heating element 98 to preheat the heating element 98;

[0221] 3. After the temperature of the heating element 98 reaches the working temperature, a folded photobioreactor sheet with baffle structure to be welded is pulled out from the unwinding device, folded into two layers of folded photobioreactor sheet with baffle structure 921 facing each other by the folding device, placed between the two rollers of the first traction device 932, guided by the first guide roller 94 and converted into horizontal movement, pulled by the second traction device 95 and guided by the second guide roller 96, the folded photobioreactor sheet with two layers facing each other passes over the guide plate 97, passes between the two rollers of the pressing device 99, and arrives between the two rollers of the third traction device 910, and ensures that during the traction process, the photobioreactor sheet with baffle structure folded into two layers facing each other by the folding device is aligned left and right, and the heating element 98 is located in the center between two adjacent rows of baffles of the photobioreactor sheet with baffle structure;

[0222] 4. The two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910 are moved by the pneumatic device 124 until the two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910 are in contact with the non-baffle area of ​​the photobioreactor sheet, and the pressure between the two rollers is controlled by adjusting the input air pressure to tension the photobioreactor sheet with baffle structure folded into two layers face to face by the folding device;

[0223] 5. Control the driving device 123 of the first traction device 932 and the second traction device 95 to rotate, and drive the driving device 123 to drive the baffle structure photobioreactor sheet 921 folded into two layers facing each other by the folding device to be transported horizontally, with the heating element 98 in front and the pressing device 99 in the rear along the conveying direction, and adjust the spacing of the pressing wheel 994 on the crossbeam 993 to keep the pressure of all the welding parts of the baffle structure photobioreactor sheets consistent during welding. The heating element 98 heats and melts the facing photobioreactor sheets, and the pressing device 99 is used to press and weld the molten sheet parts, and the pressing parts (i.e., welds) are used as the ribs of the soft plate-type photobioreactor; the welded baffle structure photobioreactor sheet 922 is rolled up by the rolling device, and cut by the cross-cutting device 911 when it reaches the set size;

[0224] 6. Replace the photobioreactor sheet with baffle structure at the unwinding device, repeat steps 3 to 5, and weld the next batch of photobioreactor sheets with baffle structure;

[0225] 7. After welding is completed, the pneumatic device 124 is adjusted to move the two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910, so that the two rollers of the first traction device 932, the two rollers of the second traction device 95, the two rollers of the pressing device 99 and the two rollers of the third traction device 910 are separated, and the heating of the heating element 98 is stopped. When the temperature of the heating element 98 drops to room temperature, the power supply and gas source are turned off.

[0226] like Figure 8 As shown, by using the manufacturing device and method provided in this embodiment to manufacture the flow channel of a soft plate type photobioreactor, the length of a single soft plate type photobioreactor flow channel can be extended arbitrarily, which can greatly reduce the connection and construction costs of a large-scale microalgae cultivation system.

[0227] Embodiment 11

[0228] A manufacturing device for welding a folded photobioreactor sheet with a baffle structure at a rib plate to form a soft plate photobioreactor flow channel, the device and steps are different from those of Example 1 in that ultrasonic heating welding is used for welding. Specifically, Fig.15 As shown, the ultrasonic heating element 98 and the pressing device 99 are arranged as the same component; wherein, the upper heating element 981 is arranged on the pressure ring of the upper roller of the parallel rollers, and the lower heating element 982 is arranged on the pressure ring of the lower roller of the parallel rollers, and the upper heating element 981 and the lower heating element 982 are both connected to the ultrasonic generating device.

[0229] In this embodiment, only one of the upper heating element 981 and the lower heating element 982 can be selected as needed, or both can be selected to heat and weld the photobioreactor sheet with baffle structure that is folded into two layers facing each other.

[0230] The manufacturing device provided by the present invention adopts ultrasonic heating and is suitable for manufacturing the flow channel of the soft plate-type photobioreactor of materials that are not suitable for direct heating. In addition, the heating element and the pressing device of the manufacturing device of this embodiment are set as the same component, which reduces the components of the manufacturing device and can further avoid the problem that the heating part and the pressing part do not overlap, resulting in inconsistent width of the flow channel of the soft plate-type photobioreactor.

[0231] Example 12

[0232] A manufacturing device for welding a folded photobioreactor sheet with a baffle structure at the rib plate to form a soft plate photobioreactor flow channel, the device and steps are different from those of Example 2 in that the heating element 98 is welded by high-frequency heating welding.

[0233] The high-frequency heating method adopted by the present invention is suitable for manufacturing the flow channel of the soft plate photobioreactor made of special materials such as PVC. At the same time, the manufacturing device provided by the present invention sets the heating element and the pressing device as the same component, such as Fig.15 As shown, the number of components of the manufacturing device is reduced, which can further avoid the problem of inconsistent flow channel width of the soft plate type photobioreactor due to the misalignment of the heating part and the pressing part.

[0234] Example 13

[0235] A manufacturing device for welding two sheets of baffle-structured photobioreactor sheets at the ribs to form a soft plate-type photobioreactor flow channel. The manufacturing device shown is different from Example 1 in that the photobioreactor sheets used are two directly aligned non-folded baffle-structured photobioreactor sheets, and the roll stand 92 is a double roll stand. Fig.17 Without passing through the folding device, two sheets of non-folded photobioreactor sheets with baffle structures that are aligned face to face are directly pulled out from the unwinding device, and after being directly aligned face to face, they are placed between the two rollers of the first traction device 932, and the aligned photobioreactor sheets with baffle structures are converted into horizontal motion through the guidance of the first guide roller 94, and the other steps are performed according to the method described in Example 1 to weld the flow channel.

[0236] Embodiment 14

[0237] A manufacturing device for welding two sheets of baffle-structured photobioreactor sheets at the ribs to form a flow channel of a soft plate-type photobioreactor. The manufacturing device is different from Example 13 in that the two sheets of non-folded photobioreactor sheets with baffle structures that are aligned face to face are directly pulled out from the unwinding device without passing between the two rollers of the first traction device 932. After being directly aligned face to face, the aligned photobioreactor sheets with baffle structures are converted into horizontal movement through the guidance of the first guide roller 94. The other steps are to weld the flow channel according to the method described in Example 13.

[0238] Embodiment 15

[0239] A manufacturing device for welding a folded photobioreactor sheet with a baffle structure at a rib plate to form a flow channel of a soft plate-type photobioreactor. The manufacturing device shown is different from Example 10 in that the folded photobioreactor sheet with a baffle structure is directly folded in half by a folding device without passing between two rollers of a first traction device 932. The aligned photobioreactor sheet with a baffle structure is then guided by a first guide roller 94 to convert the aligned photobioreactor sheet with a baffle structure into horizontal motion. The other steps are performed by welding the flow channel according to the method described in Example 10.

[0240] Example 16

[0241] A soft plate type photobioreactor flow channel obtained by welding the photobioreactor sheet with a baffle structure described in any one of Examples 1 to 4, or a soft plate type photobioreactor flow channel obtained by welding the photobioreactor sheet with a baffle structure manufactured by the manufacturing device and manufacturing method described in any one of Examples 5 to 9, or a soft plate type photobioreactor flow channel manufactured by the manufacturing device and manufacturing method described in any one of Examples 10 to 15.

[0242] At the same time, this embodiment also provides a soft plate type photobioreactor, the soft plate type photobioreactor comprising the soft plate type photobioreactor flow channel and joints arranged at both ends of the soft plate type photobioreactor flow channel. The joints may be hard joints, specifically consisting of a main pipe connected to a culture fluid delivery device and a branch pipe connected to the soft plate type photobioreactor flow channel.

[0243] Embodiment 17

[0244] A manufacturing device for a flow channel of a soft plate-type photobioreactor, the manufacturing device comprising two integral one-time molding manufacturing devices for photobioreactor sheets with baffle structures as described in embodiments 5-8, and a first traction device 932 and / or a first guide roller 94, a second traction device 95, a guide device, a welding device, a traction and winding device, and a control device 913 arranged in sequence along the conveying direction of the photobioreactor sheet with baffle structures;

[0245] In the one-step forming manufacturing device for the photobioreactor sheet with baffle structure described in the two embodiments 5-8, the sheets coming out of the forming device are aligned face to face, and after alignment, they are directly transported to the first traction device 932 or directly transported to the first guide roller 94, and then transported to the guide device through the second traction device 95;

[0246] The guide device includes a plurality of second guide rollers 96 and a guide plate 97. The plurality of second guide rollers 96 are arranged in parallel, and the photobioreactor sheet with a baffle structure passes through from the lower part of the first second guide roller to the upper part of the last second guide roller in sequence and enters the guide plate 97; the guide plate 97 includes a plurality of long strip plates 131 separated by a certain gap;

[0247] The welding device comprises a heating element 98 and a pressing device 99, wherein the heating element 98 is arranged between the pressing device 99 and the guide plate 97 or on the pressing device 99;

[0248] The traction and winding device includes a third traction device 910, a cross-cutting device 911 and a winding device 912; the cross-cutting device 911 is arranged between the third traction device 910 and the winding device 912; the third traction device 910 pulls the welded baffle structure photobioreactor sheet into the winding device 912, and when the winding device 912 completes the winding of one roll, the cross-cutting device 911 cuts the baffle structure photobioreactor sheet;

[0249] The first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910 all include two parallel rollers, and the two rollers include a rotating shaft 121 and a pressing ring 122; the pressing ring 122 is sleeved on the rotating shaft 121, and the rotating shafts of the two rollers are supported by supports at both ends. The two rollers are connected to the driving device 123, and one of the two rollers is connected to the pneumatic device 124 or both rollers are connected to the pneumatic device 124;

[0250] The first traction device 932 , the second traction device 95 , the heating element 98 , the pressing device 99 , the third traction device 910 , the cross-cutting device 911 and the winding device 912 are all connected to the control device 913 by signals.

[0251] The pressing device 99 includes two parallel rollers 991 and 992, a crossbeam 993 arranged above the roller 991, and a plurality of pressing wheels 994 arranged on the crossbeam; the pressing wheel 994 is arranged between two adjacent pressing rings, and the pressing wheel 994 is close to the rotating shaft of the roller 991.

[0252] The number of the pressure rings 122 is at least 2, and the pressure rings are arranged at intervals, and the gap between two adjacent pressure rings is greater than or equal to the width of the baffle column on the photobioreactor sheet with baffle structure.

[0253] The surface of the pressure ring 122 is provided with patterns.

[0254] The width of the long strip plate 131 is equal to or slightly smaller than the column spacing of the baffles, and the gap between two adjacent long strip plates is equal to or slightly larger than the column width of the baffles.

[0255] The heating method of the heating element 98 includes high temperature heating, ultrasonic heating, high frequency heating, pulse heating, friction heating, infrared heating or laser heating. In this embodiment, any one of them can be selected.

[0256] In this embodiment, the sheet coming out of the forming device can be directly aligned, or it can be aligned after passing through one or more devices including a trimming device, a cooling rack, a first traction device, a storage rack, a second traction device, a transverse cutting device and a winding device.

[0257] A method for manufacturing a flow channel of a soft plate-type photobioreactor, the manufacturing method comprising the following steps:

[0258] 1) Preheating: Start the power supply of the single screw extruder or twin screw extruder of the material extrusion device to heat the screw; after the screw temperature reaches the set temperature, set the temperature of the upper roller, middle roller and lower roller of the molding device to 10-80°C, and keep a certain distance between the upper roller, middle roller and lower roller, and start the molding device;

[0259] 2) Premixing and heating: After the screw temperature of the material extruder and the temperatures of the upper roller, middle roller and lower roller of the molding device reach the set temperature, the raw materials of the baffle and the substrate material and the functional masterbatch containing the processing aid are sequentially added to the premixing device in proportion for premixing, the mixing temperature is 10-80°C, the rotation speed is 10-800 rpm, and the mixing time is 1-10 minutes;

[0260] 3) Extrusion molding demoulding: Use a single screw extruder or a twin screw extruder to melt and extrude the material, filter it through the screen filter of the material extrusion device, and pump it with a melt pump. Then, it passes through a hanger-type die to form a flat sheet material. The flat sheet material is pulled to the gap between the lower roller and the middle roller of the molding device, and the spacing between the lower roller and the middle roller is adjusted to be close to the thickness of the sheet of the photobioreactor with a baffle structure. The flat sheet material is clamped, and the rotation speed of the lower roller and the middle roller is adjusted to 0.2-10 rpm, so that the flat sheet material fills the long strip groove of the middle roller to form a complete solid The hollow baffle structure is formed by filling the gap between the long strip groove of the middle roller and the long strip protrusion of the lower roller to obtain a preliminarily formed photobioreactor sheet with a baffle structure; the preliminarily formed photobioreactor sheet with a baffle structure is pulled to the gap between the upper roller and the middle roller, the distance between the upper roller and the middle roller is adjusted to press the preliminarily formed photobioreactor sheet with a baffle structure, and then the rotation speed of the upper roller is adjusted to 0.2-10 revolutions per minute, and the baffle is removed from the long strip groove by the force generated by the two rollers rotating in opposite directions to achieve demolding;

[0261] 4) Connecting an external power source and an external air source, supplying air to the pneumatic device 124, and using the pneumatic device 124 to separate the two rollers of the second traction device 95, the pressing device 99, and the third traction device 910;

[0262] 5) Setting the operating temperature of the heating element 98 to preheat the heating element 98;

[0263] 6) After the temperature of the heating element 98 reaches the working temperature, the preliminarily formed baffle structure photobioreactor sheet is wound around the upper roller of the forming device for half a circle and then led out from the upper part of the upper roller. The sheets of the two forming devices are led out from the upper part of the upper roller respectively and then directly aligned face to face. After alignment, they are placed between the two rollers of the first traction device 932 and guided by the first guide roller 94, or directly placed on the first guide roller 94 and converted into horizontal movement by the guidance of the first guide roller 94. They are pulled by the second traction device 95 and guided by the second guide roller 96. The baffle structure photobioreactor sheet that is directly aligned face to face passes over the guide plate 97, passes between the two rollers of the pressing device 99, and arrives between the two rollers of the third traction device 910. It is ensured that during the traction process, the baffle structure photobioreactor sheet that is directly aligned face to face is aligned left and right, and the heating element 98 is located in the center between two adjacent rows of baffles of the baffle structure photobioreactor sheet;

[0264] 7) The two rollers of the second traction device 95, the pressing device 99 and the third traction device 910 are moved by the pneumatic device 124 until the two rollers of the second traction device 95, the pressing device 99 and the third traction device 910 are in contact with the non-baffle area of ​​the photobioreactor sheet, and the pressure between the two rollers is controlled by adjusting the input air pressure to tension the photobioreactor sheet with baffle structure that is directly aligned face to face;

[0265] 8) Control the driving device 123 of the second traction device 95 to rotate, and drive the driving device 123 to drive the horizontal conveying of the baffle structure photobioreactor sheets that are directly aligned face to face, with the heating element 98 in front and the pressing device 99 in the back along the conveying direction, and adjust the spacing of the pressing wheel 994 on the crossbeam 993 to keep the pressure of the welding parts of all the baffle structure photobioreactor sheets consistent during welding; the heating element 98 heats and melts the photobioreactor sheets that face each other, and the pressing device 99 is used to press and weld the molten sheet parts, and the pressed parts serve as the ribs of the soft plate-type photobioreactor; the two non-folded baffle structure photobioreactor sheets that are directly aligned face to face after welding are rolled up by the rolling device, and cut by the cross-cutting device 911 when the set size is reached;

[0266] 9) After welding is completed, the pneumatic device 124 is adjusted to move the two rollers of the second traction device 95, the pressing device 99 and the third traction device 910, so that the two rollers of the second traction device 95, the two rollers of the pressing device 99 and the two rollers of the third traction device 910 are separated, and the heating of the heating element 98 is stopped. When the temperature of the heating element 98 drops to room temperature, the power supply and gas source are turned off.

[0267] Embodiment 18

[0268] A manufacturing device for a flow channel of a soft plate-type photobioreactor, the manufacturing device comprising the integral one-time molding manufacturing device for a photobioreactor sheet with a baffle structure as described in Examples 5-8, and a folding device, a first guide roller 94, a second traction device 95, a guide device, a welding device, a traction and winding device, and a control device 913 arranged in sequence along the conveying direction of the photobioreactor sheet with a baffle structure;

[0269] The folding device includes a tripod 931 and a first traction device 932; the tripod includes a first edge 101, a second edge 102 and a third edge 103, and the point where the second edge 102 and the third edge 103 intersect is a vertex 104;

[0270] In the one-step forming manufacturing device for the photobioreactor sheet with baffle structure described in Examples 5-8, the sheet coming out of the forming device is pulled to the folding device by the first pulling device 932, the photobioreactor sheet with baffle structure is laid on the first edge 101, covering the second edge 102, the third edge 103 and the vertex 104, the folding line of the photobioreactor sheet with baffle structure is aligned with the vertex 104, folded at the vertex 104, and the folded photobioreactor sheet with baffle structure is pulled to the gap between the two rollers of the first pulling device 932; the folded photobioreactor sheet with baffle structure is transported to the guide device via the first guide roller 94 and the second pulling device 95;

[0271] The guide device includes a plurality of second guide rollers 96 and a guide plate 97. The photobioreactor sheet with a baffle structure passes through from the lower part of the first second guide roller to the upper part of the last second guide roller in sequence and enters the guide plate 97. The guide plate 97 includes a plurality of long strip plates 131 separated by a certain gap.

[0272] The welding device comprises a heating element 98 and a pressing device 99, wherein the heating element 98 is arranged between the pressing device 99 and the guide plate 97 or on the pressing device 99;

[0273] The traction and winding device includes a third traction device 910, a cross-cutting device 911 and a winding device 912; the cross-cutting device 911 is arranged between the third traction device 910 and the winding device 912; the third traction device 910 pulls the welded baffle structure photobioreactor sheet into the winding device 912, and when the winding device 912 completes the winding of one roll, the cross-cutting device 911 cuts the baffle structure photobioreactor sheet;

[0274] The first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910 all include two parallel rollers, and the two rollers include a rotating shaft 121 and a pressing ring 122; the pressing ring 122 is sleeved on the rotating shaft 121, and the rotating shafts of the two rollers are supported by supports at both ends. The two rollers are connected to the driving device 123, and one of the two rollers is connected to the pneumatic device 124 or both rollers are connected to the pneumatic device 124;

[0275] The first traction device 932 , the second traction device 95 , the heating element 98 , the pressing device 99 , the third traction device 910 , the cross-cutting device 911 and the winding device 912 are all connected to the control device 913 by signals.

[0276] The pressing device 99 includes two parallel rollers 991 and 992, a crossbeam 993 arranged above the roller 991, and a plurality of pressing wheels 994 arranged on the crossbeam; the pressing wheel 994 is arranged between two adjacent pressing rings, and the pressing wheel 994 is close to the rotating shaft of the roller 991.

[0277] The number of the pressure rings 122 is at least 2, and the pressure rings are arranged at intervals, and the gap between two adjacent pressure rings is greater than or equal to the width of the baffle column on the photobioreactor sheet with baffle structure.

[0278] The surface of the pressure ring 122 is provided with patterns.

[0279] The width of the long strip plate 131 is equal to or slightly smaller than the column spacing of the baffles, and the gap between two adjacent long strip plates is equal to or slightly larger than the column width of the baffles.

[0280] The heating method of the heating element 98 includes high temperature heating, ultrasonic heating, high frequency heating, pulse heating, friction heating, infrared heating or laser heating.

[0281] In this embodiment, the sheet coming out of the forming device can be folded directly, or it can be folded after passing through one or more devices including a trimming device, a cooling rack, a first traction device, a storage rack, a second traction device, a transverse cutting device and a winding device.

[0282] A method for manufacturing a flow channel of a soft plate-type photobioreactor, the manufacturing method comprising the following steps:

[0283] 1) Preheating: Start the power supply of the single screw extruder or twin screw extruder of the material extrusion device to heat the screw; after the screw temperature reaches the set temperature, set the temperature of the upper roller, middle roller and lower roller of the molding device to 10-80°C, and keep a certain distance between the upper roller, middle roller and lower roller, and start the molding device;

[0284] 2) Premixing and heating: After the screw temperature of the material extruder and the temperatures of the upper roller, middle roller and lower roller of the molding device reach the set temperature, the raw materials of the baffle and the substrate material and the functional masterbatch containing the processing aid are sequentially added to the premixing device in proportion for premixing, the mixing temperature is 10-80°C, the rotation speed is 10-800 rpm, and the mixing time is 1-10 minutes;

[0285] 3) Extrusion molding demoulding: Use a single screw extruder or a twin screw extruder to melt and extrude the material, filter it through the screen filter of the material extrusion device, and pump it with a melt pump. Then, it passes through a hanger-type die to form a flat sheet material. The flat sheet material is pulled to the gap between the lower roller and the middle roller of the molding device, and the spacing between the lower roller and the middle roller is adjusted to be close to the thickness of the sheet of the photobioreactor with a baffle structure. The flat sheet material is clamped, and the rotation speed of the lower roller and the middle roller is adjusted to 0.2-10 rpm, so that the flat sheet material fills the long strip groove of the middle roller to form a complete solid The hollow baffle structure is formed by filling the gap between the long strip groove of the middle roller and the long strip protrusion of the lower roller to obtain a preliminarily formed photobioreactor sheet with a baffle structure; the preliminarily formed photobioreactor sheet with a baffle structure is pulled to the gap between the upper roller and the middle roller, the distance between the upper roller and the middle roller is adjusted to press the preliminarily formed photobioreactor sheet with a baffle structure, and then the rotation speed of the upper roller is adjusted to 0.2-10 revolutions per minute, and the baffle is removed from the long strip groove by the force generated by the two rollers rotating in opposite directions to achieve demolding;

[0286] 4) Connect an external power source and an external air source, supply air to the pneumatic device 124, and use the pneumatic device 124 to separate the two rollers of the first traction device 932, the second traction device 95, the pressing device 99, and the third traction device 910;

[0287] 5) Setting the operating temperature of the heating element 98 to preheat the heating element 98;

[0288] 6) After the temperature of the heating element 98 reaches the working temperature, the initially formed photobioreactor sheet with baffle structure is led out from the upper part of the upper roller after being wound around the upper roller of the forming device for half a circle, and then folded into two layers facing each other by the folding device, and then placed between the two rollers of the first traction device 932, and converted into horizontal movement by the guidance of the first guide roller 94, and then guided by the second traction device 95 and the second guide roller 96. The photobioreactor sheet folded into two layers facing each other passes over the guide plate 97, passes between the two rollers of the pressing device 99, and arrives between the two rollers of the third traction device 910, and it is ensured that during the traction process, the photobioreactor sheet with baffle structure folded into two layers facing each other by the folding device is aligned left and right, and the heating element 98 is located in the center between two adjacent rows of baffles of the photobioreactor sheet with baffle structure;

[0289] 7) The two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910 are moved by the pneumatic device 124 until the two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910 are in contact with the non-baffle area of ​​the photobioreactor sheet, and the pressure between the two rollers is controlled by adjusting the input air pressure to tension the photobioreactor sheet with baffle structure folded into two layers face to face by the folding device;

[0290] 8) Control the driving device 123 of the first traction device 932 and the second traction device 95 to rotate, and drive the driving device 123 to drive the horizontal transportation of the photobioreactor sheet with baffle structure that is folded into two layers facing each other through the folding device, with the heating element 98 in front and the pressing device 99 in the back along the conveying direction, and adjust the spacing of the pressing wheel 994 on the crossbeam 993 so that the pressure of welding parts of all the photobioreactor sheets with baffle structure is kept consistent during welding; the heating element 98 heats and melts the photobioreactor sheets facing each other, and the pressing device 99 is used to press and weld the molten sheet parts, and the pressed parts are used as the ribs of the soft plate-type photobioreactor; the welded photobioreactor sheet with baffle structure that is folded into two layers facing each other through the folding device is rolled up by the rolling device, and is cut by the cross-cutting device 911 when it reaches the set size;

[0291] 9) After welding is completed, the pneumatic device 124 is adjusted to move the two rollers of the first traction device 932, the second traction device 95, the pressing device 99 and the third traction device 910, so that the two rollers of the first traction device 932, the two rollers of the second traction device 95, the two rollers of the pressing device 99 and the two rollers of the third traction device 910 are separated, and the heating of the heating element 98 is stopped. When the temperature of the heating element 98 drops to room temperature, the power supply and the gas source are turned off.

[0292] The process parameters (such as temperature, time, etc.) of the present invention can realize the method by taking upper and lower limits and interval values, and the embodiments are not listed one by one here.

[0293] Any contents not described in detail in the present invention can be based on the conventional technical knowledge in the art.

[0294] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that any modification or equivalent replacement of the technical solutions of the present invention does not depart from the spirit and scope of the technical solutions of the present invention and should be included in the scope of the claims of the present invention.

Claims

1. A photobioreactor sheet with baffle structure, characterized in that: The photobioreactor sheet with baffle structure is composed of a plurality of sheet repeating units connected end to end; The sheet repeating unit comprises a substrate and a baffle of an integral structure, and the baffle is located on both sides of the central axis or the folding line; The baffles are arranged in rows and columns on the substrate, with a row spacing of 10-200 mm, the distance between the first row of baffles and the edge of the sheet repeating unit is 10-400 mm, and the distance between the last row of baffles and the edge of the sheet repeating unit is 10-400 mm; the column spacing is 10 mm-300 mm, and the distance between the outermost row of baffles and the edge of the sheet repeating unit is 10-300 mm; The number of baffle rows of the sheet material repeating unit is 2-200 rows, and the number of baffle columns of the sheet material repeating unit is 1-200 columns.

2. The photobioreactor sheet with baffle structure according to claim 1, characterized in that: The rows on both sides of the fold line are staggered by one row spacing along the direction of the fold line.

3. The photobioreactor sheet with baffle structure according to claim 1, characterized in that: The width of the photobioreactor sheet with baffle structure is 30mm-40000mm.

4. The photobioreactor sheet with baffle structure according to claim 1, characterized in that: The baffle is a solid structure or a hollow structure; the back of the baffle with a hollow structure is an open groove structure, or a closed surface with an opening formed by combining a film and a substrate.

5. The photobioreactor sheet with baffle structure according to claim 1, characterized in that: The photobioreactor sheet with baffle structure is a non-folding photobioreactor sheet with baffle structure or a folding photobioreactor sheet with baffle structure.

6. An integral one-step molding manufacturing device for a photobioreactor sheet with a baffle structure, characterized in that: The manufacturing device comprises a material extrusion device and a molding device which are arranged in sequence; The material extrusion device comprises a premixing device, a vacuum feeder, a screw extruder, a screen filter, a melt pump and a hanger-type die head which are arranged in sequence; The forming device comprises an upper roller, a middle roller, a lower roller and a driving device, wherein the upper roller, the middle roller and the lower roller are installed on a bracket in an up-and-down structure, and the upper roller, the middle roller and the lower roller are all connected to the driving device; The upper roller is a smooth roller, and the middle roller is provided with long strip grooves arranged in rows and columns. The arrangement of the long strip grooves is the same as the arrangement of the baffles on the manufactured sheet. The size of the long strip grooves is the same as the size of the baffles on the manufactured sheet, and a plurality of micro holes are provided at the bottom of the grooves.

7. The one-step forming manufacturing device for the photobioreactor sheet with baffle structure according to claim 6, characterized in that: The manufacturing device also includes a trimming device, a cooling rack, a first traction device, a material storage rack, a second traction device, a transverse cutting device and a winding device which are arranged in sequence, and the trimming device is connected to the forming device.

8. The one-step integral molding manufacturing device for a photobioreactor sheet with a baffle structure according to claim 6 or 7, characterized in that: The lower roller is a smooth roller, or the lower roller is provided with long strip protrusions arranged in rows and columns; the arrangement of the long strip protrusions is the same as that of the long strip grooves, and they correspond one to one.

9. The one-step forming manufacturing device for the photobioreactor sheet with baffle structure according to claim 8, characterized in that: The manufacturing device also includes a film synchronous composite device; the film synchronous composite device includes a finished film and a conveyor. The finished film is conveyed by the conveyor and is pressed onto the back of the photobioreactor sheet with a hollow baffle structure by an upper roller to achieve composite of the finished film and the substrate.

10. The one-step integral molding manufacturing device for a photobioreactor sheet with a baffle structure according to claim 6 or 7, characterized in that: An air suction pump is arranged inside the middle roller, and the air suction pump is connected to the microholes.

11. The one-step integral molding manufacturing device for a photobioreactor sheet with a baffle structure according to claim 6 or 7, characterized in that: The ratio of the outer diameter of the middle roller to the depth of the long strip groove is 20:1-120:1; the lengths of the upper roller, the middle roller and the lower roller are greater than or equal to the width of the photobioreactor sheet with baffle structure.

12. The one-step forming manufacturing device for the photobioreactor sheet with baffle structure according to claim 11, characterized in that: The ratio of the length of the upper roller, the middle roller and the lower roller to the width of the photobioreactor sheet with the baffle structure is 1.1:1-1.6:

1.

13. The one-step integral molding manufacturing device for a photobioreactor sheet with a baffle structure according to claim 6 or 7, characterized in that: The forming device also includes a cooling device for cooling and shaping the photobioreactor sheet with baffle structure, and the cooling device is at least connected to the lower roller and the middle roller.

14. The one-step forming manufacturing device for the photobioreactor sheet with baffle structure according to claim 13, characterized in that: The cooling device includes a first cooling mechanism connected to the lower roller, a second cooling mechanism connected to the middle roller, and a third cooling mechanism connected to the upper roller, wherein the first cooling mechanism has a first constant temperature controller for controlling the temperature of the lower roller, the second cooling mechanism has a second constant temperature controller for controlling the temperature of the middle roller, and the third cooling mechanism has a third constant temperature controller for controlling the temperature of the upper roller.

15. The one-step forming manufacturing device for the photobioreactor sheet with baffle structure according to claim 7, characterized in that: The trimming device includes a trimming frame, a trimming machine drive roller assembly arranged on the trimming frame and used to convey sheets, and trimming knives arranged on both sides of the trimming frame. The blades of the trimming knives are located on the sheet conveying path, and the distance between the two trimming knives is less than the roller surface length of the drive roller.

16. The one-step forming manufacturing device for the photobioreactor sheet with baffle structure according to claim 7, characterized in that: The manufacturing device also includes a monitoring and control component. The material extrusion device, the molding device, the trimming device, the first traction device, the second traction device, the transverse cutting device and the monitoring and control component are signal-connected. The monitoring and control component is signal-connected to the central control device, and the central control device is signal-connected to the terminal server.

17. A method for manufacturing a photobioreactor sheet with a baffle structure in one piece, the steps of the manufacturing method are as follows: 1) Preheating: Start the power supply of the single screw extruder or twin screw extruder of the material extrusion device to heat the screw; after the screw temperature reaches the set temperature, set the temperature of the upper roller, middle roller and lower roller of the molding device to 10-80°C, and keep a certain distance between the upper roller, middle roller and lower roller, and start the molding device; 2) Premixing and heating: After the screw temperature of the material extruder and the temperatures of the upper roller, middle roller and lower roller of the molding device reach the set temperature, the raw materials of the baffle and the substrate material and the functional masterbatch containing the processing aid are sequentially added to the premixing device in proportion for premixing, the mixing temperature is 10-80°C, the rotation speed is 10-800 rpm, and the mixing time is 1-10 minutes; 3) Extrusion molding demoulding: Use a single screw extruder or a twin screw extruder to melt and extrude the material, filter it through the screen filter of the material extrusion device, and pump it with a melt pump. Then, it passes through a hanger-type die to form a flat sheet material. The flat sheet material is pulled to the gap between the lower roller and the middle roller of the molding device, and the spacing between the lower roller and the middle roller is adjusted to be close to the thickness of the sheet of the photobioreactor with a baffle structure. The flat sheet material is clamped, and the rotation speed of the lower roller and the middle roller is adjusted to 0.2-10 rpm, so that the flat sheet material fills the long strip groove of the middle roller to form a complete solid The hollow baffle structure is formed by filling the gap between the long strip groove of the middle roller and the long strip protrusion of the lower roller to obtain a preliminarily formed photobioreactor sheet with a baffle structure; the preliminarily formed photobioreactor sheet with a baffle structure is pulled to the gap between the upper roller and the middle roller, the distance between the upper roller and the middle roller is adjusted to press the preliminarily formed photobioreactor sheet with a baffle structure, and then the rotation speed of the upper roller is adjusted to 0.2-10 revolutions per minute, and the baffle is removed from the long strip groove by the force generated by the two rollers rotating in opposite directions to achieve demolding; 4) Cooling, shaping and cutting: The initially formed photobioreactor sheet with baffle structure is wound around the upper roller of the forming device for half a circle and then led out from the upper part of the upper roller, and pulled to the cooling rack, the first traction device, the storage rack, the second traction device, the transverse cutting device and the winding device, and the second traction device, the transverse cutting device and the winding device are started for further cooling, shaping, cutting and winding to obtain the photobioreactor sheet with baffle structure.

18. A manufacturing device for a flow channel of a soft plate-type photobioreactor, characterized in that: The manufacturing device comprises two integral one-time forming manufacturing devices for the baffle structure photobioreactor sheet material according to any one of claims 6 to 16, and a first traction device (932) and / or a first guide roller (94), a second traction device (95), a guide device, a welding device, a traction and winding device, and a control device (913) sequentially arranged along the conveying direction of the baffle structure photobioreactor sheet material; In the one-step forming manufacturing device for photobioreactor sheets with baffle structures as described in any one of claims 6 to 16, the sheets coming out of the forming device are aligned face to face, and after alignment, they are directly transported to the first traction device (932) or directly transported to the first guide roller (94), and then transported to the guide device via the second traction device (95); The guide device comprises a plurality of second guide rollers (96) and a guide plate (97); the plurality of second guide rollers (96) are arranged in parallel, and the photobioreactor sheet with a baffle structure passes through from the lower part of the first second guide roller to the upper part of the last second guide roller in sequence and enters the guide plate (97); the guide plate (97) comprises a plurality of long strip plates (131) spaced at a certain interval; The welding device comprises a heating element (98) and a pressing device (99), wherein the heating element (98) is arranged between the pressing device (99) and the guide plate (97) or on the pressing device (99); The traction and winding device comprises a third traction device (910), a cross-cutting device (911) and a winding device (912); a cross-cutting device (911) is arranged between the third traction device (910) and the winding device (912); the third traction device (910) pulls the welded light bioreactor sheet with baffle structure into the winding device (912); when the winding device (912) completes the winding of one roll, the cross-cutting device (911) cuts the light bioreactor sheet with baffle structure; The first traction device (932), the second traction device (95), the pressing device (99) and the third traction device (910) all include two parallel rollers, and the two rollers all include a rotating shaft (121) and a pressing ring (122); the pressing ring (122) is sleeved on the rotating shaft (121), the rotating shafts of the two rollers are supported by supports at both ends, the two rollers are connected to the driving device (123), one of the two rollers is connected to the pneumatic device (124) or both rollers are connected to the pneumatic device (124); The first traction device (932), the second traction device (95), the heating element (98), the pressing device (99), the third traction device (910), the cross-cutting device (911) and the winding device (912) are all connected to the control device (913) by signal.

19. A manufacturing device for a flow channel of a soft plate-type photobioreactor, characterized in that: The manufacturing device comprises an integral one-time forming manufacturing device for a photobioreactor sheet with a baffle structure as claimed in any one of claims 6 to 16, and a folding device, a first guide roller (94), a second traction device (95), a guide device, a welding device, a traction and winding device, and a control device (913) arranged in sequence along the conveying direction of the photobioreactor sheet with a baffle structure; The folding device comprises a tripod (931) and a first traction device (932); the tripod comprises a first edge (101), a second edge (102) and a third edge (103), and the point where the second edge (102) and the third edge (103) intersect is a vertex (104); In the one-step forming manufacturing device for the photobioreactor sheet with a baffle structure as described in any one of claims 6 to 16, the sheet coming out of the forming device is pulled by the first traction device (932) to the folding device, the photobioreactor sheet with a baffle structure is laid on the first edge (101), covering the second edge (102), the third edge (103) and the vertex (104), the folding line of the photobioreactor sheet with a baffle structure is aligned with the vertex (104), folded at the vertex (104), and the folded photobioreactor sheet with a baffle structure is pulled to the gap between the two rollers of the first traction device (932); the folded photobioreactor sheet with a baffle structure is transported to the guide device via the first guide roller (94) and the second traction device (95); The guide device comprises a plurality of second guide rollers (96) and a guide plate (97); the photobioreactor sheet with a baffle structure passes through from the lower part of the first second guide roller to the upper part of the last second guide roller in sequence and enters the guide plate (97); the guide plate (97) comprises a plurality of long strip plates (131) spaced apart by a certain gap; The welding device comprises a heating element (98) and a pressing device (99), wherein the heating element (98) is arranged between the pressing device (99) and the guide plate (97) or on the pressing device (99); The traction and winding device comprises a third traction device (910), a cross-cutting device (911) and a winding device (912); a cross-cutting device (911) is arranged between the third traction device (910) and the winding device (912); the third traction device (910) pulls the welded light bioreactor sheet with baffle structure into the winding device (912); when the winding device (912) completes the winding of one roll, the cross-cutting device (911) cuts the light bioreactor sheet with baffle structure; The first traction device (932), the second traction device (95), the pressing device (99) and the third traction device (910) all include two parallel rollers, and the two rollers all include a rotating shaft (121) and a pressing ring (122); the pressing ring (122) is sleeved on the rotating shaft (121), the rotating shafts of the two rollers are supported by supports at both ends, the two rollers are connected to the driving device (123), one of the two rollers is connected to the pneumatic device (124) or both rollers are connected to the pneumatic device (124); The first traction device (932), the second traction device (95), the heating element (98), the pressing device (99), the third traction device (910), the cross-cutting device (911) and the winding device (912) are all connected to the control device (913) by signal.

20. The manufacturing device for the flow channel of the soft plate-type photobioreactor according to claim 18 or 19, characterized in that: The pressing device (99) comprises two parallel rollers (991) and (992), a crossbeam (993) arranged above the roller (991), and a plurality of pressing wheels (994) arranged on the crossbeam; the pressing wheel (994) is arranged between two adjacent pressing rings, and the pressing wheel (994) is close to the rotating shaft of the roller (991).

21. The manufacturing device for the flow channel of the soft plate-type photobioreactor according to claim 18 or 19, characterized in that: The number of the pressure rings (122) is at least 2, and the pressure rings are arranged at intervals, and the gap between two adjacent pressure rings is greater than or equal to the width of the baffle column on the photobioreactor sheet with baffle structure.

22. The manufacturing device of the flow channel of the soft plate type photobioreactor according to claim 18 or 19, characterized in that: The surface of the pressure ring (122) is provided with a pattern.

23. The manufacturing device of the flow channel of the soft plate-type photobioreactor according to claim 18 or 19, characterized in that: The width of the long strip plate (131) is equal to or slightly smaller than the column spacing of the baffles, and the gap between two adjacent long strip plates is equal to or slightly larger than the column width of the baffles.

24. The manufacturing device of the flow channel of the soft plate-type photobioreactor according to claim 18 or 19, characterized in that: The heating method of the heating element (98) includes high temperature heating, ultrasonic heating, high frequency heating, pulse heating, friction heating, infrared heating or laser heating.

25. A method for manufacturing a flow channel of a soft plate-type photobioreactor, the method comprising the following steps: 1) Preheating: Start the power supply of the single screw extruder or twin screw extruder of the material extrusion device to heat the screw; after the screw temperature reaches the set temperature, set the temperature of the upper roller, middle roller and lower roller of the molding device to 10-80°C, and keep a certain distance between the upper roller, middle roller and lower roller, and start the molding device; 2) Premixing and heating: After the screw temperature of the material extruder and the temperatures of the upper roller, middle roller and lower roller of the molding device reach the set temperature, the raw materials of the baffle and the substrate material and the functional masterbatch containing the processing aid are sequentially added to the premixing device in proportion for premixing, the mixing temperature is 10-80°C, the rotation speed is 10-800 rpm, and the mixing time is 1-10 minutes; 3) Extrusion molding demoulding: Use a single screw extruder or a twin screw extruder to melt and extrude the material, filter it through the screen filter of the material extrusion device, and pump it with a melt pump. Then, it passes through a hanger-type die to form a flat sheet material. The flat sheet material is pulled to the gap between the lower roller and the middle roller of the molding device, and the spacing between the lower roller and the middle roller is adjusted to be close to the thickness of the sheet of the photobioreactor with a baffle structure. The flat sheet material is clamped, and the rotation speed of the lower roller and the middle roller is adjusted to 0.2-10 rpm, so that the flat sheet material fills the long strip groove of the middle roller to form a complete solid The hollow baffle structure is formed by filling the gap between the long strip groove of the middle roller and the long strip protrusion of the lower roller to obtain a preliminarily formed photobioreactor sheet with a baffle structure; the preliminarily formed photobioreactor sheet with a baffle structure is pulled to the gap between the upper roller and the middle roller, the distance between the upper roller and the middle roller is adjusted to press the preliminarily formed photobioreactor sheet with a baffle structure, and then the rotation speed of the upper roller is adjusted to 0.2-10 revolutions per minute, and the baffle is removed from the long strip groove by the force generated by the two rollers rotating in opposite directions to achieve demolding; 4) connecting an external power source and an external air source, supplying air to the pneumatic device (124), and using the pneumatic device (124) to separate the two rollers of the second traction device (95), the pressing device (99) and the third traction device (910); 5) setting the operating temperature of the heating element (98) to preheat the heating element (98); 6) After the temperature of the heating element (98) reaches the working temperature, the initially formed photobioreactor sheet with baffle structure is wound around the upper roller of the forming device for half a circle and then led out from the upper part of the upper roller. The sheets of the two forming devices are led out from the upper part of the upper roller respectively and then directly aligned face to face. After alignment, they are placed between the two rollers of the first traction device (932) and guided by the first guide roller (94), or directly placed on the first guide roller (94), and converted into horizontal movement by the guidance of the first guide roller (94). They are pulled by the second traction device (95) and guided by the second guide roller (96). The photobioreactor sheet with baffle structure that is directly aligned face to face passes over the guide plate (97), passes between the two rollers of the pressing device (99), and arrives between the two rollers of the third traction device (910). It is ensured that during the traction process, the photobioreactor sheet with baffle structure that is directly aligned face to face is aligned left and right, and the heating element (98) is located in the center between two adjacent rows of baffles of the photobioreactor sheet with baffle structure; 7) The two rollers of the second traction device (95), the pressing device (99) and the third traction device (910) are moved by the pneumatic device (124) until the two rollers of the second traction device (95), the pressing device (99) and the third traction device (910) are in contact with the non-baffle area of ​​the baffle structured photobioreactor sheet, and the pressure between the two rollers is controlled by adjusting the input air pressure to tension the baffle structured photobioreactor sheet that is directly aligned face to face; 8) controlling the driving device (123) of the second traction device (95) to rotate, and driving the driving device (123) to horizontally convey the directly face-to-face aligned light bioreactor sheets with baffle structures, with the heating element (98) first and the pressing device (99) later in the conveying direction, adjusting the spacing between the pressing wheels (994) on the crossbeam (993) so that the pressure of welding parts of all the light bioreactor sheets with baffle structures remains consistent during welding; the heating element (98) heats and melts the face-to-face light bioreactor sheets with baffle structures, and the pressing device (99) is used to press and weld the molten sheet parts, with the pressed parts serving as ribs of the soft plate-type light bioreactor; after welding, the two non-folded light bioreactor sheets with baffle structures that are directly face-to-face aligned are rolled up by the rolling device, and are cut by the cross-cutting device (911) when the set size is reached; 9) After welding is completed, the pneumatic device (124) is adjusted to move the two rollers of the second traction device (95), the pressing device (99) and the third traction device (910), so that the two rollers of the second traction device (95), the two rollers of the pressing device (99) and the two rollers of the third traction device (910) are separated, and the heating of the heating element (98) is stopped. When the temperature of the heating element (98) drops to room temperature, the power supply and the gas source are turned off.

26. A method for manufacturing a flow channel of a soft plate-type photobioreactor, the method comprising the following steps: 1) Preheating: Start the power supply of the single screw extruder or twin screw extruder of the material extrusion device to heat the screw; after the screw temperature reaches the set temperature, set the temperature of the upper roller, middle roller and lower roller of the molding device to 10-80°C, and keep a certain distance between the upper roller, middle roller and lower roller, and start the molding device; 2) Premixing and heating: After the screw temperature of the material extruder and the temperatures of the upper roller, middle roller and lower roller of the molding device reach the set temperature, the raw materials of the baffle and the substrate material and the functional masterbatch containing the processing aid are sequentially added to the premixing device in proportion for premixing, the mixing temperature is 10-80°C, the rotation speed is 10-800 rpm, and the mixing time is 1-10 minutes; 3) Extrusion molding demoulding: Use a single screw extruder or a twin screw extruder to melt and extrude the material, filter it through the screen filter of the material extrusion device, and pump it with a melt pump. Then, it passes through a hanger-type die to form a flat sheet material. The flat sheet material is pulled to the gap between the lower roller and the middle roller of the molding device, and the spacing between the lower roller and the middle roller is adjusted to be close to the thickness of the sheet of the photobioreactor with a baffle structure. The flat sheet material is clamped, and the rotation speed of the lower roller and the middle roller is adjusted to 0.2-10 rpm, so that the flat sheet material fills the long strip groove of the middle roller to form a complete solid The hollow baffle structure is formed by filling the gap between the long strip groove of the middle roller and the long strip protrusion of the lower roller to obtain a preliminarily formed photobioreactor sheet with a baffle structure; the preliminarily formed photobioreactor sheet with a baffle structure is pulled to the gap between the upper roller and the middle roller, the distance between the upper roller and the middle roller is adjusted to press the preliminarily formed photobioreactor sheet with a baffle structure, and then the rotation speed of the upper roller is adjusted to 0.2-10 revolutions per minute, and the baffle is removed from the long strip groove by the force generated by the two rollers rotating in opposite directions to achieve demolding; 4) connecting an external power source and an external air source, supplying air to the pneumatic device (124), and using the pneumatic device (124) to separate the two rollers of the first traction device (932), the second traction device (95), the pressing device (99), and the third traction device (910); 5) setting the operating temperature of the heating element (98) to preheat the heating element (98); 6) After the temperature of the heating element (98) reaches the working temperature, the initially formed photobioreactor sheet with baffle structure is wound around the upper roller of the forming device for half a circle and then led out from the upper part of the upper roller, folded into two layers facing each other by the folding device, and then placed between the two rollers of the first traction device (932), guided by the first guide roller (94) to convert into horizontal movement, pulled by the second traction device (95) and guided by the second guide roller (96), the photobioreactor sheet folded into two layers facing each other passes over the guide plate (97), passes between the two rollers of the pressing device (99), and arrives between the two rollers of the third traction device (910), and it is ensured that during the traction process, the photobioreactor sheet with baffle structure folded into two layers facing each other by the folding device is aligned left and right, and the heating element (98) is located in the center between two adjacent rows of baffles of the photobioreactor sheet with baffle structure; 7) The two rollers of the first traction device (932), the second traction device (95), the pressing device (99) and the third traction device (910) are moved by the pneumatic device (124) until the two rollers of the first traction device (932), the second traction device (95), the pressing device (99) and the third traction device (910) are in contact with the non-baffle area of ​​the photobioreactor sheet, and the pressure between the two rollers is controlled by adjusting the input air pressure to tension the photobioreactor sheet with baffle structure folded into two layers facing each other by the folding device; 8) Controlling the driving devices (123) of the first traction device (932) and the second traction device (95) to rotate, and driving the driving device (123) to drive the horizontal conveying of the photobioreactor sheet with baffle structure that is folded into two layers facing each other through the folding device, with the heating element (98) in front and the pressing device (99) in the back along the conveying direction, and adjusting the spacing between the pressing wheels (994) on the crossbeam (993) so that the pressure of welding parts of all the photobioreactor sheets with baffle structure is kept consistent during welding; the heating element (98) heats and melts the photobioreactor sheets facing each other, and the pressing device (99) is used to press and weld the molten sheet parts, and the pressed parts are used as the ribs of the soft plate-type photobioreactor; after welding, the photobioreactor sheet with baffle structure that is folded into two layers facing each other through the folding device is rolled up by the rolling device, and is cut by the cross-cutting device (911) when the set size is reached; 9) After welding is completed, the pneumatic device (124) is adjusted to move the two rollers of the first traction device (932), the second traction device (95), the pressing device (99) and the third traction device (910), so that the two rollers of the first traction device (932), the two rollers of the second traction device (95), the two rollers of the pressing device (99) and the two rollers of the third traction device (910) are separated, and the heating of the heating element (98) is stopped. When the temperature of the heating element (98) drops to room temperature, the power supply and the gas source are turned off.

27. A soft plate-type photobioreactor flow channel, characterized in that: The soft plate-type photobioreactor flow channel is formed by aligning two sheets of the photobioreactor sheet material with a baffle structure according to any one of claims 1 to 5 of any length and welding them at the rib plate portion; or, The photobioreactor sheet with baffle structure according to any one of claims 1 to 5 of any length is folded in half along a folding line and welded at the rib plate position.

28. A soft plate type photobioreactor, characterized in that: The soft plate type photobioreactor comprises the soft plate type photobioreactor flow channel of claim 27 and joints arranged at both ends of the soft plate type photobioreactor flow channel.

29. The soft plate type photobioreactor according to claim 28, characterized in that: The joint is a hard joint.

30. The soft plate type photobioreactor according to claim 29, characterized in that: The hard joint is composed of a main pipe connected to a culture liquid conveying device and a plurality of branch pipes connected to a flow channel of a soft plate-type photobioreactor.

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