Manufacturing device and manufacturing method of soft plate type photobioreactor runner

Abstract

The invention relates to the field of microalgae culture photobioreactors, in particular to a manufacturing device and a manufacturing method of a soft plate type photobioreactor runner. According to the manufacturing device, two (or one folded) photobioreactor sheets with baffle structures are automatically aligned and continuously welded with rib plates of any length in a large scale to form a soft plate type photobioreactor runner, and then the soft plate type photobioreactor is manufactured. The invention relates to a flexible plate type photobioreactor, and aims to solve the problems that in the manufacturing process of a flexible plate type photobioreactor with an internal baffle structure, two (or one folded) sheet rib plates of a photobioreactor with a baffle structure are difficult to weld, the production efficiency is low, the manufacturing cost is too high, the quality is difficult to guarantee, and only a small-size flexible plate type photobioreactor can be manufactured.

Description

Technical Field

[0001] The present invention relates to the field of microalgae cultivation photobioreactors, and in particular to a manufacturing device and a manufacturing method for a flow channel of a soft plate-type photobioreactor having an internal baffle structure and multiple flow channels. 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 can only be welded by semi-automatic manufacturing methods such as manual alignment and flat-plate welding devices, while the welding of the drawstring can only be done manually. The use of 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 soft plate photobioreactors.

[0005] Although Chinese patents ZL201420323929.3 and ZL201410270445.1 have mentioned that "the flow channels are separated by ribs, which are bonding seams or welding seams formed by directly bonding or welding the main films of the illuminated surface and the matte surface in the integral molding of the soft plate-type photobioreactor, and act as a partition plate", the above patents do not provide specific manufacturing processes and implementation plans. Currently, there is no device on the market that can automatically align two (or one folded in half) sheets of photobioreactor sheets with baffle structures and continuously weld ribs of any length in large quantities. Moreover, the baffle structure prevents two sheets (or one sheet folded in half) of photobioreactor sheets with baffle structures from fitting tightly together. When conventional manual alignment is used followed by welding using semi-automatic manufacturing methods such as flat-plate welding devices, the ribs of the two layers of sheets facing each other are prone to deviation (misalignment), making it difficult to ensure the consistency of the flow channel structure after welding. At the same time, since the photobioreactor includes multiple flow channels, multiple flow channels need to be welded simultaneously and the ribs are long, making it difficult to keep the welding conditions of different ribs consistent for a long time. To achieve automatic alignment of two sheets (or one sheet folded in half) of photobioreactor sheets with baffle structures and to be able to weld ribs continuously, of any length, and in large quantities, it is necessary to overcome the difficulties of left-right deviation (misalignment) of the two layers of photobioreactor sheets with baffle structures facing each other and the difficulty of keeping the welding conditions of multiple ribs consistent. Summary of the invention

[0006] The purpose of the present invention is to provide a manufacturing device and a manufacturing method for automatically aligning and continuously welding ribs 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 of automatically aligning and continuously welding ribs of two (or one folded in half) photobioreactor sheets with baffle structures to any length and in large quantities (and subsequently make a soft plate type photobioreactor), so as to solve the problems of 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 being able to manufacture small-sized soft plate type photobioreactors in the manufacturing process of soft plate type photobioreactors with internal baffle structures.

[0007] 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.

[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 may 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 properties, light transmittance and processing properties of the 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] 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 34, a second traction device 35, a guide device, a welding device, a traction and winding device and a control device 313 arranged in sequence along the conveying direction of the sheet of the photobioreactor with a baffle structure, such as Figure 3 .

[0040] The unwinding device is used to deliver the baffle structure photobioreactor sheet along the conveying direction, and includes a mounting seat 31 and a roll rack 32; the mounting seat 31 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 31 on the guide rail; the roll rack 32 is arranged on the mounting seat 31; the roll rack 32 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 32 is a double roll rack, and a roll of a non-folding sheet is placed on each of the two roll racks, and the sheets of the two rolls are facing each other. The sheets are folded and released at the same time, and are directly transported to the first traction device 332 or directly transported to the first guide roller 34 without passing through the folding device; when a sheet of folded-in-half-type photobioreactor sheet with a baffle structure is used, the roll rack 32 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 in half by the folding device and transported to the first guide roller 34; the roll of the photobioreactor sheet with a baffle structure on the roll rack 32 rotates around its own axis under the traction of the first traction device 332 to release the sheet and is transported to the second guide roller 36 through the first guide roller 34 and the second traction device 35.

[0041] 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 331 and a first traction device 332; the tripod is as follows Figure 4 As shown, it includes a first edge 41, a second edge 42 and a third edge 43. The first edge 41 is parallel to the roll frame, and the point where the second edge 42 and the third edge 43 intersect is the vertex 44. The first traction device 332 includes two parallel rollers, the rotating shafts of the two rollers are supported by supports at both ends, and one or both of the two rollers can be connected to the driving device 63. The driving device 63 can be a motor-driven coupling. The two rollers include a rotating shaft 61 and a pressure ring 62, and one or both are driven to rotate by the driving device 63; the pressure ring is sleeved on the rotating shaft, and 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 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 332. The placement of the tripod 331 is as follows Figure 4 and Figure 5As shown, the first edge 41 is parallel to the roll frame 32, the second edge 42 and the third edge 43 are placed obliquely, and the vertex 44 is close to the gap between the two rollers of the first traction device 332. 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 41 to cover the tripod; at the same time, the folded photobioreactor sheet with a baffle structure covers the second edge 42, the third edge 43 and the vertex 44, the vertex of the folded photobioreactor sheet with a baffle structure is aligned with the vertex 44, folded at the vertex 44, and the folded photobioreactor sheet with a baffle structure is pulled to the gap between the two rollers of the first traction device 332.

[0042] The first guide roller 34 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.

[0043] The second traction device 35 is arranged between the first guide roller 34 and the second guide roller 36, and plays the role of traction and tensioning the sheet of the light bioreactor with baffle structure. The second traction device 35 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 63, the driving device 63 can be a motor-driven coupling, the two rollers each include a rotating shaft 61 and a pressure ring 62, one or both are driven to rotate by the driving device 63; the pressure ring 62 is sleeved on the rotating shaft 61, 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 35.

[0044] The surface of the pressure ring 62 of the second traction device 35 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.

[0045] The second traction device 35 also plays a pressing role. The pneumatic device 64 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.

[0046] The guide device includes a plurality of second guide rollers 36 and a guide plate 37, which are used to convey 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, and ensure that the ribs of the photobioreactor sheet with baffle structure do not deviate during the conveying process.

[0047] The guide plate 37 is structured as follows: Figure 7 As shown, it includes a plurality of long strip plates 71 spaced apart 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.

[0048] 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 38 and a pressing device 39, such as Figure 8-10 shown.

[0049] The heating element 38 is arranged between the pressing device 39 and the guide plate 37 or on the pressing device 39 .

[0050] The heating element 38 includes an upper heating element 381 and a lower heating element 382, ​​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.

[0051] The heating methods of the heating element 38 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 381 and the lower heating element 382. 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 Figure 8 As shown, at this time, the heating element 38 is arranged between the pressing device 39 and the guide plate 37, 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 37, 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. 9As 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. 9 At this time, during the rotation of the pressing device 39, 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.

[0052] The pressing device 39 is as follows Fig.10 As shown, it includes two parallel rollers 391 and 392, 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 63, and the driving device 63 can be a motor-driven coupling. The two rollers include a rotating shaft 61 and a pressure ring 62, and one or both are driven to rotate by the driving device 63; 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.

[0053] The surface of the pressing ring 62 of the pressing device 39 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.

[0054] The welding process is to adjust the distance and pressure between the two rollers 391 and 392, and press one roller against the other roller to press and weld the photobioreactor sheet with baffle structure.

[0055] The pressing device 39 also includes a crossbeam 393 arranged above the roller 391 and a plurality of pressure wheels 394 arranged on the crossbeam; the pressure wheel 394 is arranged between two adjacent pressure rings, and the pressure wheel 394 is close to the rotating axis of the roller 391. 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 39 consistent.

[0056] The traction and winding device includes a third traction device 310, a cross-cutting device 311 and a winding device 312. The third traction device 310 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 63. The driving device 63 can be a motor-driven coupling. The two rollers each include a rotating shaft 61 and a pressure ring 62. One or both are driven to rotate by the driving device 63. 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.

[0057] In the present invention, the first traction device 332, the second traction device 35, the pressing device 39 and the third traction device 310 all include two parallel rollers, both rollers include a rotating shaft 61 and a pressure ring 62; the pressure ring 62 is sleeved on the rotating shaft 61, the rotating shafts of the two rollers are supported by supports at both ends, the two rollers are connected to the driving device 63, one of the two rollers is connected to the pneumatic device 64 or both rollers are connected to the pneumatic device 64, 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, rubber rollers, or one is a hard roller and the other is a rubber roller. One of the two parallel rollers can be selected or both rollers can be selected to connect to the pneumatic device 64, and the pneumatic device 64 is used to separate the two rollers of the first traction device 332, the second traction device 35, the pressing device 39 and the third traction device 310.

[0058] A cross-cutting device 311 is provided between the third traction device 310 and the winding device 312. The third traction device 310 draws the welded baffle structure photobioreactor sheet into the winding device 312. When the winding device 312 completes the winding of one roll, the cross-cutting device 311 cuts the baffle structure photobioreactor sheet, and the manufacture of the flow channel of the soft plate type photobioreactor is completed.

[0059] The unwinding device, the first traction device 332, the second traction device 35, the heating element 38, the pressing device 39, the third traction device 310, the cross-cutting device 311 and the winding device 312 are all connected to the control device 313 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.

[0060] The manufacturing device also includes a machine table 314, and the unwinding device, the first traction device 332, the second traction device 35, the heating element 38, the laminating device 39, the third traction device 310, and the cross-cutting device 311 are arranged on the machine table 314. The control device 313 can be arranged on the machine table 314 or other positions of the manufacturing device described in the present invention.

[0061] 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.

[0062] 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:

[0063] 1. Turn on the external power supply and the external air source, supply air to the pneumatic device 64, and use the pneumatic device 64 to separate the two rollers of the first traction device 332, the second traction device 35, the pressing device 39 and the third traction device 310;

[0064] 2. Setting the operating temperature of the heating element 38 to preheat the heating element 38;

[0065] 3. After the temperature of the heating element 38 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 332 or directly placed on the first guide roller 34, and converted into horizontal movement by the guidance of the first guide roller 34, and then guided by the second traction device 35 and the second guide roller 36. The photobioreactor sheets that are directly aligned face to face or folded into two layers face to face pass through the guide plate 37, pass between the two rollers of the pressing device 39, and arrive between the two rollers of the third traction device 310, 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 38 is located in the center between two adjacent rows of baffles of the photobioreactor sheets with baffle structures;

[0066] 4. The two rollers of the first traction device 332, the second traction device 35, the pressing device 39 and the third traction device 310 are moved by the pneumatic device 64 until the two rollers of the first traction device 332, the second traction device 35, the pressing device 39 and the third traction device 310 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;

[0067] 5. Control the driving device 63 of the first traction device 332 and the second traction device 35 to rotate, and drive the driving device 63 to horizontally convey the baffle structure photobioreactor sheets that are directly aligned face to face or folded into two layers face to face by the folding device, with the heating element 38 in front and the pressing device 39 in the back along the conveying direction, and adjust the spacing of the pressing wheel 394 on the crossbeam 393 to keep the pressure of all the welding parts of the baffle structure photobioreactor sheets consistent during welding. The heating element 38 heats and melts the face-to-face photobioreactor sheets, and the pressing device 39 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 that are 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 311 when the set size is reached;

[0068] 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;

[0069] 7. After welding is completed, the pneumatic device 64 is adjusted to move the two rollers of the first traction device 332, the second traction device 35, the pressing device 39 and the third traction device 310, so that the two rollers of the first traction device 332, the two rollers of the second traction device 35, the two rollers of the pressing device 39 and the two rollers of the third traction device 310 are separated, and the heating of the heating element 38 is stopped. When the temperature of the heating element 38 drops to room temperature, the power supply and the gas source are turned off.

[0070] The manufacturing device and method for welding the baffle structure photobioreactor sheet at the rib plate to form a flow channel of a soft plate photobioreactor can use a baffle structure photobioreactor sheet of any length as feed material, weld to form a flow channel of a soft plate photobioreactor, add a drawstring and an inlet and outlet joint, or add a hard joint to form a soft plate photobioreactor. The hard joint is composed of a main pipe (main pipe, thick pipe) connected to a culture fluid delivery device (for example, a pump) and a branch pipe (branch pipe, thin pipe) connected to the flow channel of the soft plate photobioreactor, and can be made of any hard material that is harmless to the culture process.

[0071] The manufacturing device and method of the flow channel of the soft plate-type photobioreactor provided by the present invention have the following advantages compared with the existing flow channel manufacturing technology:

[0072] 1. The folding device, traction device and guide device provided by the present invention can realize the smooth transportation of the photobioreactor sheet with baffle after folding. After ensuring the initial alignment of the sheet, the manpower consumption for adjusting the alignment during transportation and the problem of unstable flow channel quality are reduced, the manufacturing cost of the flow channel of the soft plate photobioreactor is reduced, and the quality of the flow channel of the soft plate photobioreactor is improved.

[0073] 2. 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.

[0074] 3. 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, thus solving the difficult problem of manufacturing the flow channel of a large soft plate type photobioreactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] FIG. 1( a ) is a top view of a repeating unit of a non-folded photobioreactor sheet with a baffle structure;

[0076] FIG1( b ) is a top view of a repeating unit of a folded photobioreactor sheet with a baffle structure;

[0077] FIG. 2( a ) is a front view of the cross-sectional shape of a single baffle on a photobioreactor sheet with a baffle structure;

[0078] 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;

[0079] Figure 3 It is a structural schematic diagram of a single roll-up soft plate photobioreactor flow channel manufacturing device;

[0080] Figure 4 It is a schematic diagram of the structure of a tripod for a folding device;

[0081] Figure 5 A schematic diagram of a folding method of the folding device;

[0082] Figure 6 It is a front view of one of the two rollers in parallel;

[0083] Figure 7 is a top view of the guide plate;

[0084] Figure 8 A schematic diagram of the location of a heating element;

[0085] Fig. 9 A schematic diagram of another arrangement position of a heating element;

[0086] Fig.10 It is a structural schematic diagram of a pressing device;

[0087] Fig.11 This is a flow channel diagram of a soft plate photobioreactor;

[0088] Fig.12 This is a schematic diagram of the structure of a double-roll-frame soft plate photobioreactor flow channel manufacturing device.

[0089] Reference numerals:

[0090] 11. substrate; 12. baffle; A', central axis; B', folding line; 21. rectangular baffle; 22. triangular baffle; 23. trapezoidal baffle; 24. semicircular baffle; 31. mounting seat; 32. roll rack; 321. folded photobioreactor sheet with baffle structure; 322. welded photobioreactor sheet with baffle structure; 331. triangular plate; 332. first traction device; 34. first guide roller; 35. second traction device; 36. second guide roller; 37. guide plate; 3 8. Heating element; 39. Laminating device; 310. Third traction device; 311. Cross-cutting device; 312. Winding device; 313. Control device; 314. Machine table; 41. First edge; 42. Second edge; 43. Third edge; 44. Vertex; 61. Rotating shaft; 62. Pressing ring; 63. Driving device; 64. Pneumatic device; 71. Long strip of plate; 381. Upper heating element; 382. Lower heating element; 391. Upper roller; 392. Lower roller; 393. Crossbeam; 394. Pressing wheel. DETAILED DESCRIPTION

[0091] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0092] Example 1

[0093] like Figure 3 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 34, a second traction device 35, a guide device, a welding device, a traction and reeling device and a control device 313 which are arranged in sequence along the conveying direction of the photobioreactor sheet with a baffle structure.

[0094] The unwinding device is used to send out the baffle structure photobioreactor sheet along the conveying direction, and includes a mounting seat 31 and a roll rack 32; the mounting seat 31 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 31 on the guide rail; the roll rack 32 is arranged on the mounting seat 31; a folded baffle structure photobioreactor sheet is used, which is folded into two layers facing each other, and the roll rack 32 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 34; the baffle structure photobioreactor sheet roll on the roll rack 32 rotates around its own axis under the traction of the first traction device 332 to release the sheet and is conveyed to the second guide roller 36 through the first guide roller 34 and the second traction device 35.

[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 331 and a first traction device 332; the tripod is as follows Figure 4 As shown, it includes a first edge 41, a second edge 42 and a third edge 43. The first edge 41 is parallel to the roll frame 32, and the intersection point of the second edge 42 and the third edge 43 is the vertex 44. The first traction device 332 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 63, and the driving device 63 is a motor driven coupling. The two rollers each include a rotating shaft 61 and a pressure ring 62, as shown in FIG. Figure 6 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 62 is sleeved on the rotating shaft 61, 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 332. The tripod 331 is placed as shown in the following figure. Figure 4 and Figure 5 As shown, the first edge 41 is parallel to the roll frame 32, the second edge 42 and the third edge 43 are placed obliquely, and the vertex 44 is close to the gap between the two rollers of the first traction device 332. 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 41 to cover the tripod; at the same time, the folded-in-two-layer photobioreactor sheet with a baffle structure covers the second edge 42, the third edge 43 and the vertex 44, the vertex of the folding line of the folded-in-two-layer photobioreactor sheet with a baffle structure is aligned with the vertex 44, folded in half at the vertex 44, and the folded photobioreactor sheet with a baffle structure is pulled to the gap between the two rollers of the first traction device 332.

[0096] The first guide roller 34 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.

[0097] The second traction device 35 is arranged between the first guide roller 34 and the second guide roller 36, and plays the function of traction and tensioning the photobioreactor sheet with baffle structure. The second traction device 35 includes two parallel rollers, the rotating shafts of the two rollers are supported by the supports at both ends, and the two rollers are connected to the driving device 63, and the driving device 63 is a motor-driven coupling. The two rollers include a rotating shaft 61 and a pressure ring 62; the pressure ring 62 is sleeved on the rotating shaft 61, 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 62 is sleeved on the rotating shaft 61, the number of pressure rings is 11, and the gap between any two adjacent pressure rings is 50mm.

[0098] The surface of the pressure ring 62 of the second traction device 35 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.

[0099] The second traction device 35 also plays a pressing role. The pneumatic device 64 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 comprises four second guide rollers 36 and one guide plate 37. The second guide roller 36 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 37 in sequence.

[0101] The guide plate 37 is structured as follows: Figure 7 As shown, it includes 11 long strip plates 71 separated by a certain gap, the width of the long strip plates is 60 mm, and the gap between two long strip plates is 40 mm.

[0102] The welding device comprises a heating element 38 and a pressing device 39. The heating element 38 comprises an upper heating element 381 and a lower heating element 382. The upper heating element 381 and the lower heating element 382 are arranged at the ends of the long strip plate 71 of the guide plate 37, such as Figure 8 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.

[0103] The pressing device 39 is as follows Fig.10 As shown, it includes two parallel rollers 391 and 392, 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 63, and the driving device 63 is a motor-driven coupling. The two rollers include a rotating shaft 61 and a pressing ring 62; the pressing ring is sleeved on the rotating shaft, the rotating shaft 61 has a diameter of 100mm, the outer diameter of the pressing ring is 130mm, the inner diameter is 100mm, and the width is 15mm. The pressing ring 62 and the rotating shaft 61 are an integrally formed structure, the number of pressing rings is 11, and the gap between any two pressing rings is 50mm.

[0104] The surface of the pressing ring 62 of the pressing device 39 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.

[0105] The welding process is to adjust the distance and pressure between the two rollers 391 and 392, and press one roller against the other roller to press and weld the photobioreactor sheet with baffle structure.

[0106] The pressing device 39 also includes a crossbeam 393 arranged above the roller 391 and a plurality of pressure wheels 394 arranged on the crossbeam; the pressure wheel 394 is arranged between two adjacent pressure rings, and the pressure wheel 394 is close to the rotating axis of the roller 391. 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 39 consistent.

[0107] The traction and winding device includes a third traction device 310, a cross-cutting device 311 and a winding device 312. The third traction device 310 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 63. The driving device 63 is a motor-driven coupling. Both rollers include a rotating shaft 61 and a pressure ring 62. 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 62 is sleeved on the rotating shaft 61. There are 11 pressure rings, and the gap between any two adjacent pressure rings is 50 mm.

[0108] A cross-cutting device 311 is provided between the third traction device 310 and the winding device 312. The third traction device 310 draws the welded baffle structure photobioreactor sheet into the winding device 312. When the winding device 312 completes the winding of one roll, the cross-cutting device 311 cuts the baffle structure photobioreactor sheet, and the manufacture of the flow channel of the soft plate type photobioreactor is completed.

[0109] The unwinding device, the first traction device 332, the second traction device 35, the heating element 38, the pressing device 39, the third traction device 310, the cross-cutting device 311 and the winding device 312 are all connected to the control device 313 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.

[0110] The manufacturing device also includes a machine platform 314 , and the unwinding device, the first traction device 332 , the second traction device 35 , the heating element 38 , the pressing device 39 , the third traction device 310 , and the cross-cutting device 311 are arranged on the machine platform 314 , and the control device 313 can be arranged on the machine platform 314 .

[0111] The winding device 312 is connected to the driving device 63 and is used to drive the welded photobioreactor sheet to be wound.

[0112] The process of manufacturing the flow channel of the soft plate-type photobioreactor using the device:

[0113] 1. Turn on the external power supply and the external air source, supply air to the pneumatic device 64, and use the pneumatic device 64 to separate the two rollers of the first traction device 332, the second traction device 35, the pressing device 39 and the third traction device 310;

[0114] 2. Setting the operating temperature of the heating element 38 to preheat the heating element 38;

[0115] 3. After the temperature of the heating element 38 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 321 facing each other by the folding device, placed between the two rollers of the first traction device 332, guided by the first guide roller 34, converted into horizontal movement, pulled by the second traction device 35 and guided by the second guide roller 36, the folded photobioreactor sheet with two layers facing each other passes over the guide plate 37, passes between the two rollers of the pressing device 39, and arrives between the two rollers of the third traction device 310, 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 38 is located in the center between two adjacent rows of baffles of the photobioreactor sheet with baffle structure;

[0116] 4. The two rollers of the first traction device 332, the second traction device 35, the pressing device 39 and the third traction device 310 are moved by the pneumatic device 64 until the two rollers of the first traction device 332, the second traction device 35, the pressing device 39 and the third traction device 310 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;

[0117] 5. Control the driving device 63 of the first traction device 332 and the second traction device 35 to rotate, and drive the baffle structure photobioreactor sheet 321 folded into two layers facing each other by the folding device to be transported horizontally through the driving device 63. The heating element 38 is in front and the pressing device 39 is in the back along the conveying direction. The spacing between the pressing wheels 394 on the crossbeam 393 is adjusted to keep the pressure of the welding parts of all the baffle structure photobioreactor sheets consistent during welding. The heating element 38 heats and melts the facing photobioreactor sheets, and the pressing device 39 is used to press and weld the molten sheet parts. The pressed parts (i.e., welds) serve as the ribs of the soft plate-type photobioreactor. The welded baffle structure photobioreactor sheet 322 is rolled up by the rolling device, and cut by the cross-cutting device 311 when it reaches the set size.

[0118] 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;

[0119] 7. After welding is completed, the pneumatic device 64 is adjusted to move the two rollers of the first traction device 332, the second traction device 35, the pressing device 39 and the third traction device 310, so that the two rollers of the first traction device 332, the two rollers of the second traction device 35, the two rollers of the pressing device 39 and the two rollers of the third traction device 310 are separated, and the heating of the heating element 38 is stopped. When the temperature of the heating element 38 drops to room temperature, the power supply and the gas source are turned off.

[0120] like Fig.11 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.

[0121] Example 2

[0122] 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. 9As shown, the ultrasonic heating element 38 and the pressing device 39 are arranged as the same component; wherein, the upper heating element 381 is arranged on the pressure ring of the upper roller of the parallel rollers, and the lower heating element 382 is arranged on the pressure ring of the lower roller of the parallel rollers, and the upper heating element 381 and the lower heating element 382 are both connected to the ultrasonic generating device.

[0123] In this embodiment, only one of the upper heating element 381 and the lower heating element 382 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.

[0124] 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.

[0125] Example 3

[0126] 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 in Example 2 in that the heating element 38 is welded by high-frequency heating welding.

[0127] 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. 9 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.

[0128] Example 4

[0129] like Fig.12 As shown, a manufacturing device for welding two pieces of baffle structure photobioreactor sheets at the rib plate 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 structure photobioreactor sheets, and the roll rack 32 is a double roll rack, such as Fig.12 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 332, and the aligned photobioreactor sheets with baffle structures are converted into horizontal motion through the guidance of the first guide roller 34, and the other steps are performed according to the method described in Example 1 to weld the flow channel.

[0130] Example 5

[0131] A manufacturing device for welding two sheets of photobioreactor with baffle structures at the ribs to form a flow channel of a soft plate-type photobioreactor. The manufacturing device is different from Example 4 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 332. 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 34. The other steps are to weld the flow channel according to the method described in Example 4.

[0132] Example 6

[0133] 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 is different from Example 1 in that the folded photobioreactor sheet with a baffle structure is directly pulled out from a reeling device without passing between two rollers of a first traction device 332, and after being folded in half by a folding device, the aligned photobioreactor sheet with a baffle structure is converted into horizontal movement by the guidance of a first guide roller 34, and the flow channel is welded in other steps according to the method described in Example 1.

[0134] Example 7

[0135] A soft plate-type photobioreactor flow channel manufactured using the manufacturing device and manufacturing method described in any one of Examples 1-6.

[0136] 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 plurality of branch pipes connected to the soft plate type photobioreactor flow channel.

[0137] 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.

[0138] Any contents not described in detail in the present invention can be based on the conventional technical knowledge in the art.

[0139] 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 manufacturing device for a flow channel of a soft plate-type photobioreactor, characterized in that: The manufacturing device comprises an unwinding device, a first traction device (332) and / or a first guide roller (34), a second traction device (35), a guide device, a welding device, a traction and winding device and a control device (313) which are sequentially arranged along the conveying direction of the baffle-structured photobioreactor sheet; The unwinding device comprises a mounting seat (31) and a roll rack (32); the roll rack (32) is arranged on the mounting seat (31); the roll rack (32) is a double roll rack; A roll of non-folded sheet material is placed on each of the two roll stands, and the sheets of the two rolls are aligned face to face and released at the same time. After being released and aligned, the sheets are directly transported to a first traction device (332) or directly transported to a first guide roller (34), and then transported to a guide device via a second traction device (35); The guide device comprises a plurality of second guide rollers (36) and a guide plate (37); the plurality of second guide rollers (36) 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 (37); the guide plate (37) comprises a plurality of long strip plates (71) spaced at a certain interval; The welding device comprises a heating element (38) and a pressing device (39), wherein the heating element (38) is arranged between the pressing device (39) and the guide plate (37) or on the pressing device (39); The traction and winding device comprises a third traction device (310), a cross-cutting device (311) and a winding device (312); a cross-cutting device (311) is arranged between the third traction device (310) and the winding device (312); the third traction device (310) pulls the welded light bioreactor sheet with baffle structure into the winding device (312); when the winding device (312) completes the winding of one roll, the cross-cutting device (311) cuts the light bioreactor sheet with baffle structure; The first traction device (332), the second traction device (35), the pressing device (39) and the third traction device (310) all include two parallel rollers, and the two rollers all include a rotating shaft (61) and a pressing ring (62); the pressing ring (62) is sleeved on the rotating shaft (61), the rotating shafts of the two rollers are supported by supports at both ends, the two rollers are connected to a driving device (63), one of the two rollers is connected to a pneumatic device (64) or both rollers are connected to the pneumatic device (64); The unwinding device, the first traction device (332), the second traction device (35), the heating element (38), the pressing device (39), the third traction device (310), the cross-cutting device (311) and the winding device (312) are all connected to the control device (313) by signals.

2. A manufacturing device for a soft plate-type photobioreactor flow channel, characterized in that: The manufacturing device comprises an unwinding device, a folding device, a first guide roller (34), a second traction device (35), a guide device, a welding device, a traction and winding device and a control device (313) which are sequentially arranged along the conveying direction of the baffle-structured photobioreactor sheet; The unwinding device comprises a mounting seat (31) and a roll rack (32); the roll rack (32) is arranged on the mounting seat (31); the roll rack (32) is a single roll rack; The folding device comprises a tripod (331) and a first traction device (332); the tripod comprises a first edge (41), a second edge (42) and a third edge (43); the first edge (41) is parallel to the roll frame (32); the point where the second edge (42) and the third edge (43) intersect is a vertex (44); The baffle structure photobioreactor sheet roll on the roll stand (32) rotates around its own axis under the traction of the first traction device (332) to release the sheet to the folding device, the baffle structure photobioreactor sheet is laid on the first edge (41), covers the second edge (42), the third edge (43) and the vertex (44), the folding line of the baffle structure photobioreactor sheet is aligned with the vertex (44), folded at the vertex (44), and the folded baffle structure photobioreactor sheet is pulled to the gap between the two rollers of the first traction device (332); the folded baffle structure photobioreactor sheet is transported to the guide device via the first guide roller (34) and the second traction device (35); The guide device comprises a plurality of second guide rollers (36) and a guide plate (37); 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 (37); the guide plate (37) comprises a plurality of long strip plates (71) spaced at a certain interval; The welding device comprises a heating element (38) and a pressing device (39), wherein the heating element (38) is arranged between the pressing device (39) and the guide plate (37) or on the pressing device (39); The traction and winding device comprises a third traction device (310), a cross-cutting device (311) and a winding device (312); a cross-cutting device (311) is arranged between the third traction device (310) and the winding device (312); the third traction device (310) pulls the welded light bioreactor sheet with baffle structure into the winding device (312); when the winding device (312) completes the winding of one roll, the cross-cutting device (311) cuts the light bioreactor sheet with baffle structure; The first traction device (332), the second traction device (35), the pressing device (39) and the third traction device (310) all include two parallel rollers, and the two rollers all include a rotating shaft (61) and a pressing ring (62); the pressing ring (62) is sleeved on the rotating shaft (61), the rotating shafts of the two rollers are supported by supports at both ends, the two rollers are connected to a driving device (63), one of the two rollers is connected to a pneumatic device (64) or both rollers are connected to the pneumatic device (64); The unwinding device, the first traction device (332), the second traction device (35), the heating element (38), the pressing device (39), the third traction device (310), the cross-cutting device (311) and the winding device (312) are all connected to the control device (313) by signals.

3. The manufacturing device of the flow channel of the soft plate type photobioreactor according to claim 1 or 2, characterized in that: The pressing device (39) includes two parallel rollers (391) and (392), a crossbeam (393) arranged above the roller (391), and a plurality of pressure wheels (394) arranged on the crossbeam; the pressure wheel (394) is arranged between two adjacent pressure rings, and the pressure wheel (394) is close to the rotating shaft of the roller (391).

4. The manufacturing device of the flow channel of the soft plate type photobioreactor according to claim 1 or 2, characterized in that: The mounting seat (31) is arranged on a guide rail parallel to the width direction of the photobioreactor sheet with baffle structure, and the lateral position of the photobioreactor sheet with baffle structure can be adjusted by sliding the mounting seat (31) on the guide rail.

5. The manufacturing device of the flow channel of the soft plate type photobioreactor according to claim 1 or 2, characterized in that: The number of the pressure rings (62) 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.

6. The manufacturing device of the flow channel of the soft plate-type photobioreactor according to claim 1 or 2, characterized in that: The surface of the pressure ring (62) is provided with a pattern.

7. The manufacturing device of the flow channel of the soft plate type photobioreactor according to claim 1 or 2, characterized in that: The width of the long strip plate (71) 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.

8. The manufacturing device of the flow channel of the soft plate type photobioreactor according to claim 1 or 2, characterized in that: The heating method of the heating element (38) includes high temperature heating, ultrasonic heating, high frequency heating, pulse heating, friction heating, infrared heating or laser heating.

9. A method for manufacturing a flow channel of a soft plate-type photobioreactor, the method comprising the following steps: 1) connecting an external power source and an external air source, supplying air to a pneumatic device (64), and using the pneumatic device (64) to separate the two rollers of the second traction device (35), the pressing device (39), and the third traction device (310); 2) setting the operating temperature of the heating element (38) to preheat the heating element (38); 3) After the temperature of the heating element (38) reaches the working temperature, the two non-folded baffle-structured photobioreactor sheets to be welded are pulled out from the unwinding device, directly aligned face to face, and then placed between the two rollers of the first traction device (332), guided by the first guide roller (34), or directly placed on the first guide roller (34), converted into horizontal movement by the guidance of the first guide roller (34), pulled by the second traction device (35) and guided by the second guide roller (36), and the baffle-structured photobioreactor sheets directly aligned face to face pass over the guide plate (37), pass between the two rollers of the pressing device (39), and arrive between the two rollers of the third traction device (310), and ensure that during the traction process, the baffle-structured photobioreactor sheets directly aligned face to face are aligned left and right, and the heating element (38) is located in the center between two adjacent rows of baffles of the baffle-structured photobioreactor sheet; 4) using a pneumatic device (64) to move the two rollers of the second traction device (35), the pressing device (39) and the third traction device (310) until the two rollers of the second traction device (35), the pressing device (39) and the third traction device (310) are in contact with the non-baffle area of ​​the photobioreactor sheet, and by adjusting the input air pressure to control the pressure between the two rollers, the photobioreactor sheet with baffle structure that is directly aligned face to face is tensioned; 5) controlling the driving device (63) of the second traction device (35) to rotate, and driving the driving device (63) to horizontally convey the directly face-to-face aligned photobioreactor sheets with baffle structures, with the heating element (38) first and the pressing device (39) later in the conveying direction, adjusting the spacing between the pressing wheels (394) on the crossbeam (393) so that the pressure of welding parts of all the photobioreactor sheets with baffle structures is kept consistent during welding; the heating element (38) heats and melts the face-to-face photobioreactor sheets, and the pressing device (39) is used to press and weld the molten sheet parts, with the pressed parts serving as ribs of the soft plate-type photobioreactor; after welding, the two non-folded photobioreactor 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 (311) when the set size is reached; 6) replacing the photobioreactor sheet with baffle structure at the unwinding device, repeating steps 3) to 5) to weld the next batch of photobioreactor sheets with baffle structure; 7) After welding is completed, the pneumatic device (64) is adjusted to move the two rollers of the second traction device (35), the pressing device (39) and the third traction device (310), so that the two rollers of the second traction device (35), the two rollers of the pressing device (39) and the two rollers of the third traction device (310) are separated, and the heating of the heating element (38) is stopped. When the temperature of the heating element (38) drops to room temperature, the power supply and the gas source are turned off.

10. A method for manufacturing a flow channel of a soft plate-type photobioreactor, the method comprising the following steps: 1) connecting an external power source and an external air source, supplying air to a pneumatic device (64), and using the pneumatic device (64) to separate two rollers of a first traction device (332), a second traction device (35), a pressing device (39), and a third traction device (310); 2) setting the operating temperature of the heating element (38) to preheat the heating element (38); 3) After the temperature of the heating element (38) reaches the working temperature, a folded photobioreactor sheet with a baffle structure to be welded is pulled out from the unwinding device, folded into two layers facing each other by the folding device, and then placed between the two rollers of the first traction device (332). The sheet is converted into horizontal movement by the guidance of the first guide roller (34), and is pulled by the second traction device (35) and guided by the second guide roller (36). The folded photobioreactor sheet with two layers facing each other passes over the guide plate (37), passes between the two rollers of the pressing device (39), and arrives between the two rollers of the third traction device (310). It is ensured that during the traction process, the photobioreactor sheet with a baffle structure folded into two layers facing each other by the folding device is aligned left and right, and the heating element (38) is located in the center between two adjacent rows of baffles of the photobioreactor sheet with a baffle structure; 4) using a pneumatic device (64) to move the two rollers of the first traction device (332), the second traction device (35), the pressing device (39) and the third traction device (310) until the two rollers of the first traction device (332), the second traction device (35), the pressing device (39) and the third traction device (310) are in contact with the non-baffle area of ​​the photobioreactor sheet, and by adjusting the input air pressure to control the pressure between the two rollers, the photobioreactor sheet with a baffle structure folded into two layers facing each other by the folding device is tensioned; 5) controlling the driving devices (63) of the first traction device (332) and the second traction device (35) to rotate, and driving the driving device (63) 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 (38) in front and the pressing device (39) in the back along the conveying direction, and adjusting the spacing between the pressing wheels (394) on the crossbeam (393) so that the pressure of welding parts of all the photobioreactor sheets with baffle structure is kept consistent during welding; the heating element (38) heats and melts the photobioreactor sheets facing each other, and the pressing device (39) 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 (311) when the set size is reached; 6) replacing the photobioreactor sheet with baffle structure at the unwinding device, repeating steps 3) to 5) to weld the next batch of photobioreactor sheets with baffle structure; 7) After welding is completed, the pneumatic device (64) is adjusted to move the two rollers of the first traction device (332), the second traction device (35), the pressing device (39) and the third traction device (310), so that the two rollers of the first traction device (332), the two rollers of the second traction device (35), the two rollers of the pressing device (39) and the two rollers of the third traction device (310) are separated, and the heating of the heating element (38) is stopped. When the temperature of the heating element (38) drops to room temperature, the power supply and the gas source are turned off.

11. A soft plate type photobioreactor flow channel manufactured by the manufacturing device according to claim 1 or 2, or a soft plate type photobioreactor flow channel manufactured by the manufacturing method according to claim 9 or 10.

12. A soft plate type photobioreactor, characterized in that: The soft plate type photobioreactor comprises the soft plate type photobioreactor flow channel of claim 11 and joints arranged at both ends of the soft plate type photobioreactor flow channel.

13. The soft plate type photobioreactor according to claim 12, characterized in that: The joint is a hard joint.

14. The soft plate type photobioreactor according to claim 13, 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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