Continuous production device for bacterial nano cellulose membrane

Abstract

The invention relates to the technical field of bacterial cellulose production, and discloses a bacterial nano cellulose membrane continuous production device, which comprises a box body, a top opening is open, and a culture medium is arranged in the box body; the rotating mechanism is arranged on the box body, a plurality of rotary drums are arranged on the rotating mechanism, and the rotary drums are partially soaked in the culture medium; the mounting frame is arranged on one side of the box body, a plurality of moving mechanisms are arranged on the mounting frame, the moving mechanisms are arranged on one side of the box body, demolding mechanisms and collecting mechanisms are arranged on the moving mechanisms, the collecting mechanisms are located below the demolding mechanisms, and the demolding mechanisms are used for cutting bacterial nano cellulose membranes on the end face of the rotary drum; the collecting mechanism is used for collecting and transferring the bacterial nano cellulose membrane cut off by the demolding mechanism; according to the automatic production line, manual participation is not needed in the forming, demolding, harvesting and transferring processes of the bacterial nano-cellulose membrane, automatic production of the bacterial nano-cellulose membrane is achieved, the production efficiency is effectively improved, and the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of bacterial cellulose production, in particular to a bacterial nanocellulose film continuous production device. Background Art

[0002] Bacterial cellulose is another type of natural non-toxic nanomaterial synthesized by microbial fermentation besides plant cellulose, also known as microbial cellulose. Bacterial cellulose belongs to nano-scale fibers, which are the thinnest natural fibers currently. Moreover, bacterial cellulose exists in the form of 100% cellulose, with extremely high purity, and has good permeability, high tensile strength and excellent property maintenance ability.

[0003] The main production method of existing bacterial cellulose membranes is to culture them in dish-shaped or box-shaped culture vessels, and then manually take them out after the bacterial cellulose membranes are formed, which has a low degree of automation. Summary of the invention

[0004] The object of the present invention is to provide a bacterial nanocellulose membrane continuous production device, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a bacterial nanocellulose film continuous production device, comprising:

[0006] A box body with an open top, wherein the box body contains a culture medium;

[0007] A rotating mechanism is arranged on the box body, and a plurality of rotating drums are arranged on the rotating mechanism, and the rotating drums are partially immersed in the culture medium so that a bacterial nanocellulose film is formed on the end surface of the rotating drum;

[0008] A mounting frame is arranged on one side of the box body, a plurality of moving mechanisms are arranged on the mounting frame, and the plurality of moving mechanisms correspond to the plurality of rotating drums one by one, the moving mechanism is arranged on one side of the box body, a demoulding mechanism and a collecting mechanism are arranged on the moving mechanism, the collecting mechanism is located below the demoulding mechanism, the demoulding mechanism is used to cut the bacterial nanocellulose film on the end surface of the rotating drum, and the collecting mechanism is used to collect and transfer the bacterial nanocellulose film cut by the demoulding mechanism;

[0009] The transport mechanism is arranged below the plurality of moving mechanisms, and is used for receiving and transporting the bacterial nanocellulose membrane transferred by the collecting mechanism.

[0010] Optionally, the rotating mechanism includes:

[0011] A first motor is fixedly mounted on one side of the box;

[0012] The rotating shaft is rotatably connected to the box body through a first bearing seat, one end of the rotating shaft is connected to the output shaft of the first motor, and the plurality of rotating drums are fixedly connected to the rotating shaft.

[0013] Optionally, the moving mechanism includes:

[0014] A multi-stage telescopic cylinder is fixedly mounted on the mounting frame, and an output end of the multi-stage telescopic cylinder faces the rotating drum;

[0015] A support plate is fixedly connected to the output end of the multi-stage telescopic cylinder, and the demoulding mechanism and the collecting mechanism are arranged on the support plate.

[0016] Optionally, the demoulding mechanism includes:

[0017] A double-outlet cylinder is fixedly mounted on the support plate;

[0018] A pair of cutting blades are connected to the two output shafts of the double-outlet cylinder through connecting rods. The pair of cutting blades are respectively located on both sides of the drum. When the two output ends of the double-outlet cylinder are extended or retracted, the pair of cutting blades move close to or away from the end surface of the drum.

[0019] Optionally, the collection mechanism includes:

[0020] A pair of collecting rollers, respectively located on both sides of the rotating drum and corresponding to the pair of cutting blades one by one;

[0021] A second motor, fixedly mounted on the support plate;

[0022] A transmission assembly is connected to the output shaft of the second motor, and the transmission assembly is connected to the two collecting rollers.

[0023] Optionally, the transmission assembly includes:

[0024] A pair of first connecting rods, corresponding to and connected to the pair of collecting rollers respectively;

[0025] A first transmission belt is transmission-connected between the output shaft of the second motor and any one of the first connecting rods through a pair of first transmission wheels;

[0026] A second connecting rod is rotatably connected to the support plate, a second spur gear is fixedly connected to the second connecting rod, the second spur gear is meshed with the first spur gear, and the first spur gear is connected to an output shaft of the second motor;

[0027] A second transmission belt is transmission-connected between the second connecting rod and another of the first connecting rods through a pair of second transmission wheels;

[0028] A pair of tension wheels are rotatably connected to the support plate through a first elastic member and a second bearing seat, and the pair of tension wheels are respectively against the first transmission belt and the second transmission belt.

[0029] Optionally, a pair of sliding grooves are provided on the support plate, a sliding frame is slidably connected in the sliding grooves, a second elastic member is arranged between the sliding frame and the sliding grooves, a third bearing seat is slidably connected in the sliding frame, a second elastic member is arranged between the third bearing seat and the sliding frame, the sliding direction of the third bearing seat is perpendicular to the sliding direction of the sliding frame, and a pair of the first connecting rods are rotatably connected in a pair of the third bearing seats respectively.

[0030] Optionally, a second motor is fixedly connected to the support plate, an output shaft of the second motor is connected to a cam, a connecting plate is fixedly connected to the sliding frame, and the cam is used to abut against a pair of the connecting plates.

[0031] Optionally, an escape opening is provided on the mounting frame, and the escape opening is located above the transfer mechanism and on the moving track of the collection mechanism.

[0032] Optionally, the transfer mechanism is a belt conveyor.

[0033] The invention discloses the following technical effects: by partially immersing a rotary drum in a culture medium in a box body, and driving a plurality of rotary drums to rotate slowly through a rotating mechanism, the circumference of the rotary drum can be effectively contacted with the culture medium, so that the culture medium is uniformly adhered to the rotary drum, and the culture medium can maintain sufficient air contact and obtain sufficient oxygen, so that the culture medium grows on the end surface of the rotary drum with the rotary drum as a base, so that a bacterial nanocellulose film is formed on the surface of the rotary drum; when it is necessary to cut and obtain the bacterial nanocellulose film, it is only necessary to drive a demoulding mechanism to approach the rotary drum through a moving mechanism, and the demoulding mechanism cuts the bacterial nanocellulose film on the end surface of the rotary drum, and as the rotary drum rotates, the whole bacterial nanocellulose film falls off the rotary drum, and at the same time, a collecting mechanism under the demoulding mechanism collects the fallen bacterial nanocellulose film; after the collection is completed, the bacterial nanocellulose film is driven by the moving mechanism to move to the top of the transport mechanism, and the bacterial nanocellulose film is transferred to the transport mechanism by the collecting mechanism, and then transferred to the next processing step by the transport mechanism; no human participation is required in the process of forming, demoulding, harvesting and transferring the bacterial nanocellulose film, so that the automatic production of the bacterial nanocellulose film is realized, the production efficiency is effectively improved, and the labor cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is a front view of the support plate of the present invention;

[0037] Figure 3 This is a schematic diagram of the support plate of the present invention from another viewing angle.

[0038] In the figure: 1, box body; 2, rotating mechanism; 21, first motor; 22, rotating shaft; 23, first bearing seat; 3, rotating drum; 4, mounting frame; 5, moving mechanism; 51, multi-stage telescopic cylinder; 52, supporting plate; 6, demoulding mechanism; 61, double-outlet cylinder; 62, cutting blade; 7, collecting mechanism; 71, collecting roller; 72, second motor; 73, first connecting rod; 74, first transmission belt; 75, first transmission wheel; 76, second connecting rod; 77, second spur gear; 78, first spur gear; 79, second transmission belt; 710, second transmission wheel; 711, tensioning wheel; 712, first elastic member; 713, second bearing seat; 8, transport mechanism; 9, sliding groove; 10, sliding frame; 11, second elastic member; 12, third bearing seat; 13, third elastic member; 14, second motor; 15, cam; 16, connecting plate. DETAILED DESCRIPTION

[0039] Bacterial cellulose (BC) is a natural polymer material produced by a specific type of bacteria through a fermentation process under suitable conditions. It is mainly produced by Gluconacetobacter xylinus (also known as Acetobacter xylinum) and several other related strains. Compared with plant-derived cellulose, bacterial cellulose has higher purity and a smaller and more evenly distributed nanofiber network structure, which gives it many unique physical and chemical properties. Research and Development Since scientists first isolated strains that can produce cellulose from acetic acid bacteria in the early 20th century, people have begun to study this special form of cellulose. With the advancement of science and technology, especially in the field of biotechnology, there is an increasing number of studies on how to increase the yield of bacterial cellulose and its application range. In 1945, Brown et al. first reported that acetic acid bacteria can produce cellulose. Subsequently, scientists began to study different types of acetic acid bacteria and found that some of these strains are particularly suitable for producing high-quality bacterial cellulose. Through in-depth research on the structure, composition and synthesis mechanism of bacterial cellulose, researchers have revealed its unique nanofiber network structure and high purity. These studies have laid a theoretical foundation for subsequent application development. After entering the 21st century, with the enhancement of sustainable development and environmental awareness, bacterial cellulose as a renewable resource has received widespread attention. Researchers have not only verified its various potential uses in the laboratory, but also made preliminary attempts in actual industrial production. For example, in the fields of food, medicine, cosmetics, etc., bacterial cellulose shows good application prospects. Environmentally friendly materials Given the increasing global awareness of sustainable development and environmental protection, finding renewable resources has become an important issue. As a completely degradable and pollution-free green material, bacterial cellulose shows great potential in many industries. Although traditional plastic packaging materials are convenient and practical, their non-degradability has led to serious environmental pollution problems. Due to its good mechanical properties and transparency, bacterial cellulose can be used as a substitute for the production of new environmentally friendly packaging materials. In the textile industry, bacterial cellulose can be used as a substitute for synthetic fibers to reduce the demand for fossil fuels. In addition, its good hygroscopicity and air permeability make it an ideal clothing fabric. The transparency and uniformity of bacterial cellulose make it suitable for the manufacture of high-performance optical films, such as display substrates, touch screens and other high-tech products. Application in the medical and health field Due to its good biocompatibility, high water absorption and air permeability, bacterial cellulose is widely used in wound dressings, artificial skin and other fields, and is also being explored as a drug sustained-release carrier. Dressings made of bacterial cellulose can provide a continuously moist environment, promote cell regeneration, and accelerate the wound healing process. In addition, its good air permeability also helps prevent infection.Artificial skin made of bacterial cellulose has good biocompatibility and mechanical properties and can be used to treat burns and other skin injuries. Researchers are exploring the possibility of using bacterial cellulose as a drug sustained-release carrier. By controlling its structure and porosity, long-term drug release can be achieved and the therapeutic effect can be improved. 4. Use in the food industry In addition to the above uses, bacterial cellulose has also attracted attention for its low-calorie but satiety-providing characteristics, and it also has certain prospects in the development of functional foods. Bacterial cellulose can be used as a food additive to increase the volume of food without increasing calories. This is very beneficial for weight loss and controlling blood sugar levels. The unique texture of bacterial cellulose can improve the taste of food, making it more delicate and refreshing. For example, adding bacterial cellulose to foods such as ice cream and jelly can enhance consumers' eating experience. Bacterial cellulose can also be used as a source of dietary fiber to help maintain intestinal health. Studies have shown that moderate intake of dietary fiber can prevent constipation, reduce cholesterol and the risk of cardiovascular disease. Production process improvement In order to meet the needs of different application scenarios and reduce costs, researchers are constantly trying to optimize the production conditions of bacterial cellulose (such as culture medium formulation, temperature control, etc.), as well as exploring new post-processing technologies to improve its performance or impart additional functions. Selecting the right carbon source, nitrogen source and other nutrients is the key to increasing the yield of bacterial cellulose. By adjusting the composition of the culture medium, researchers can significantly increase the yield and quality of bacterial cellulose. Conditions such as temperature, pH value, and oxygen supply will affect the synthesis of bacterial cellulose. By precisely controlling these parameters, production efficiency can be further improved. After harvesting, bacterial cellulose usually needs to go through steps such as washing and drying before it can be used for subsequent processing. Researchers have developed a variety of post-processing techniques, such as ultrasonic treatment and enzyme treatment, to improve its performance. Through genetic engineering technology, production strains can be modified to have higher cellulose production capacity or produce bacterial cellulose with specific functions. For example, by introducing specific genes, bacterial cellulose can be given antibacterial and anti-inflammatory properties. 6. Application Cases and Commercialization Status In recent years, with the continuous deepening of research and technological advancement, bacterial cellulose has been commercialized in many fields. Many companies have launched wound dressings and artificial skin products based on bacterial cellulose. These products have received a good response in the market and have gradually replaced traditional materials. Some food companies in Japan and other places have begun to use bacterial cellulose as a food additive and have launched a series of low-calorie, high-fiber functional foods. These products have been welcomed by consumers. Some environmentally friendly packaging material companies have also begun to develop new packaging materials based on bacterial cellulose. These materials are not only environmentally friendly, but also have good mechanical properties and transparency, and are expected to replace traditional plastic packaging materials in the future. Future Outlook Although bacterial cellulose has shown great application potential in many fields, it still faces some challenges. First, the cost of large-scale production is still high, and the production process needs to be further optimized to reduce costs.Secondly, market acceptance still needs to be improved, and more publicity and promotion work is needed. Finally, it is necessary to continue to explore new application areas and expand the application scope of bacterial cellulose. Future technological innovation will further promote the development of bacterial cellulose.

[0040] The production process of bacterial cellulose mainly includes the following steps:

[0041] 1. Culture medium preparation: Mix various raw materials in proportion to prepare a culture medium suitable for bacterial growth.

[0042] 2. Sterilization: Sterilize the prepared culture medium under high temperature and high pressure to eliminate microbial contamination.

[0043] 3. Cooling: Cool the sterilized culture medium to a suitable temperature for inoculation of bacteria.

[0044] 4. Inoculation: Inoculate Gluconobacter xylella or other suitable bacteria into the cooled culture medium.

[0045] 5. Fermentation: The inoculated culture medium is transferred to a fermentation tank for fermentation. During the fermentation process, parameters such as temperature, pH value and dissolved oxygen need to be controlled to ensure normal bacterial growth and cellulose synthesis.

[0046] 6. Harvest: After fermentation, the bacterial cellulose film or gel-like substance formed is removed from the fermentation tank.

[0047] 7. Washing: The harvested bacterial cellulose is washed several times to remove residual culture medium and impurities.

[0048] 8. Dehydration: Dehydrate the washed bacterial cellulose to reduce its water content.

[0049] 9. Drying: Dry the dehydrated bacterial cellulose to achieve the required moisture content.

[0050] 10. Post-processing: According to the specific application requirements, the dried bacterial cellulose is further processed, such as cutting, molding, etc.

[0051] The culture medium is the basis for bacterial growth and cellulose synthesis, and its composition directly affects the yield and quality of bacterial cellulose. Common culture medium components include carbon sources, nitrogen sources, minerals and other trace nutrients.

[0052] Post-processing steps of bacterial cellulose include harvesting, cleaning, dehydration and drying, which are critical to the quality and performance of the final product. Common post-processing equipment includes:

[0053] Harvesting equipment: Bacterial cellulose usually forms a thin film or gel-like substance in the fermentation tank. The harvesting equipment can be manual scraping or using an automated robotic arm. For large-scale production, automated harvesting equipment is usually used to improve efficiency.

[0054] Cleaning equipment: After harvesting, bacterial cellulose needs to be cleaned several times to remove residual culture medium and impurities. The cleaning equipment can be a simple flushing tank or a fully automatic cleaning line. The water temperature and water flow need to be controlled during the cleaning process to avoid damage to the bacterial cellulose.

[0055] Dehydration equipment: The water content of bacterial cellulose after washing is high and needs to be dehydrated. Commonly used dehydration equipment includes centrifuge, filter press and vacuum filter. Centrifuge separates water through high-speed rotation; filter press squeezes out water through pressure; vacuum filter uses negative pressure to suck water.

[0056] Drying equipment: After dehydration, bacterial cellulose needs to be further dried to reach the required moisture content. Common drying equipment includes ovens, spray dryers and freeze dryers. Ovens dry by heating air; spray dryers atomize liquids and then dry them; freeze dryers remove moisture by low-temperature sublimation.

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0059] Reference Figure 1-Figure 3 The present invention provides a bacterial nanocellulose film continuous production device, comprising:

[0060] A box body 1, with an open top, contains a culture medium;

[0061] The rotating mechanism 2 is arranged on the box body 1, and a plurality of rotating drums 3 are arranged on the rotating mechanism 2. The rotating drums 3 are partially immersed in the culture medium so that a bacterial nanocellulose film is formed on the end surface of the rotating drum 3;

[0062] A mounting frame 4 is arranged on one side of the housing 1, and a plurality of moving mechanisms 5 are arranged on the mounting frame 4, and the plurality of moving mechanisms 5 correspond to the plurality of rotating drums 3 one by one. The moving mechanisms 5 are arranged on one side of the housing 1, and a demoulding mechanism 6 and a collecting mechanism 7 are arranged on the moving mechanisms 5, and the collecting mechanism 7 is located below the demoulding mechanism 6, and the demoulding mechanism 6 is used to cut the bacterial nanocellulose film on the end surface of the rotating drum 3, and the collecting mechanism 7 is used to collect and transfer the bacterial nanocellulose film cut by the demoulding mechanism 6;

[0063] The transport mechanism 8 is disposed below the plurality of moving mechanisms 5 , and is used for receiving the bacterial nanocellulose membrane transferred by the transport and collection mechanism 7 .

[0064] By partially immersing the drum 3 in the culture medium in the housing 1, and driving the plurality of drums 3 to rotate slowly through the rotating mechanism 2, the drum 3 can be effectively contacted with the culture medium in the circumferential direction, so that the culture medium is evenly adhered to the drum 3, and the culture medium can maintain sufficient air contact and obtain sufficient oxygen, so that the culture medium grows on the end surface of the drum 3 with the drum 3 as the base, so that a bacterial nanocellulose film is formed on the surface of the drum 3. When it is necessary to cut and obtain the bacterial nanocellulose film, it is only necessary to drive the demoulding mechanism 6 to approach the drum 3 through the moving mechanism 5, and the demoulding mechanism 6 removes the bacterial nanocellulose on the end surface of the drum 3. The cellulose film is cut, and as the drum 3 rotates, the entire bacterial nanocellulose film falls off the drum 3. At the same time, the falling bacterial nanocellulose film is collected by the collecting mechanism 7 below the demoulding mechanism 6. After the collection is completed, the bacterial nanocellulose film is driven by the moving mechanism 5 to move to the top of the transfer mechanism 8, and the bacterial nanocellulose film is transferred to the transfer mechanism 8 by the collecting mechanism 7, and then transferred to the next processing step by the transfer mechanism 8. No human intervention is required in the process of formation, demoulding, harvesting and transfer of the bacterial nanocellulose film, thereby realizing the automatic production of the bacterial nanocellulose film, effectively improving the production efficiency and reducing the labor cost.

[0065] In one embodiment of the present invention, the rotating mechanism 2 comprises:

[0066] The first motor 21 is fixedly mounted on one side of the box body 1;

[0067] The rotating shaft 22 is rotatably connected to the housing 1 via a first bearing seat 23 . One end of the rotating shaft 22 is connected to the output shaft of the first motor 21 . The plurality of rotating drums 3 are fixedly connected to the rotating shaft 22 .

[0068] The first motor 21 drives the rotating shaft 22 to rotate, thereby driving the multiple rotating drums 3 to rotate slowly.

[0069] In one embodiment of the present invention, the moving mechanism 5 comprises:

[0070] The multi-stage telescopic cylinder 51 is fixedly mounted on the mounting frame 4, and the output end of the multi-stage telescopic cylinder 51 faces the rotating drum 3;

[0071] The support plate 52 is fixedly connected to the output end of the multi-stage telescopic cylinder 51 , and the demoulding mechanism 6 and the collecting mechanism 7 are arranged on the support plate 52 .

[0072] The support plate 52 is driven to move by the multi-stage telescopic cylinder 51 , so that the support plate 52 drives the demoulding mechanism 6 and the collecting mechanism 7 to move toward or away from the drum 3 .

[0073] In one embodiment of the present invention, the demoulding mechanism 6 comprises:

[0074] The double-outlet cylinder 61 is fixedly mounted on the support plate 52;

[0075] A pair of cutting blades 62 are connected to the two output shafts of the double-outlet cylinder 61 through connecting rods. The pair of cutting blades 62 are respectively located on both sides of the drum 3. When the two output ends of the double-outlet cylinder 61 are extended and retracted, the pair of cutting blades 62 move close to or away from the end surface of the drum 3.

[0076] The pair of cutting blades 62 are driven to move by the double-outlet cylinder 61 so that the pair of cutting blades 62 penetrate into the bacterial nanocellulose film on the end surface of the drum 3 , and the bacterial nanocellulose film is cut by the pair of cutting blades 62 cooperating with the rotation of the drum 3 .

[0077] In one embodiment of the present invention, the collecting mechanism 7 comprises:

[0078] A pair of collecting rollers 71, respectively located on both sides of the drum 3 and corresponding to the pair of cutting blades 62;

[0079] A second motor 72 is fixedly mounted on the support plate 52;

[0080] The transmission assembly is connected to the output shaft of the second motor 72 , and the transmission assembly is connected to the two collecting rollers 71 .

[0081] With the rotation of the drum 3 and the cooperation of the cutting blade 62, the bacterial nanocellulose membrane is gradually cut off the drum 3 and the cut opening of the bacterial nanocellulose membrane falls onto the collecting roller 71. The second motor 72 drives a pair of collecting rollers 71 to rotate through the transmission assembly, so that the detached bacterial nanocellulose membrane can be wound and collected. Conversely, the reverse rotation can apply the bacterial nanocellulose membrane to the transfer mechanism 8.

[0082] In one embodiment of the present invention, the transmission assembly comprises:

[0083] A pair of first connecting rods 73, corresponding to and connected to the pair of collecting rollers 71 respectively;

[0084] The first transmission belt 74 is transmission-connected between the output shaft of the second motor 72 and any first connecting rod 73 via a pair of first transmission wheels 75;

[0085] A second connecting rod 76 is rotatably connected to the support plate 52 , a second spur gear 77 is fixedly connected to the second connecting rod 76 , the second spur gear 77 is meshed with a first spur gear 78 , and the first spur gear 78 is connected to the output shaft of the second motor 72 ;

[0086] The second transmission belt 79 is connected between the second connecting rod 76 and the other first connecting rod 73 through a pair of second transmission wheels 710;

[0087] A pair of tension wheels 711 are rotatably connected to the support plate 52 through a first elastic member 712 and a second bearing seat 713 , and the pair of tension wheels 711 are respectively against the first transmission belt 74 and the second transmission belt 79 .

[0088] Through the transmission effect of the first transmission belt 74 and a pair of first transmission wheels 75, the second motor 72 drives the first connecting rod 73 with the first transmission wheel 75 to rotate. At the same time, the second motor 72 drives the second connecting rod 76 to rotate through the engagement of the second spur gear 77 and the first spur gear 78, and the second connecting rod 76 rotates in the opposite direction to the first connecting rod 73 with the first transmission wheel 75. Therefore, the first connecting rod 73 with the second transmission wheel 710 is driven to rotate through the second transmission belt 79 and a pair of second transmission wheels 710, so that the pair of first connecting rods 73 rotate in opposite directions, so that the pair of collecting rollers 71 rotate in opposite directions, which is suitable for the winding of the bacterial nanocellulose film on the two end surfaces of the drum 3, and realizes the effect of synchronously winding or unwinding a pair of collecting rollers 71 driven by a single driving source.

[0089] In one embodiment of the present invention, a pair of sliding grooves 9 are opened on the support plate 52, a sliding frame 10 is slidably connected in the sliding grooves 9, a second elastic member 11 is arranged between the sliding frame 10 and the sliding grooves 9, a third bearing seat 12 is slidably connected in the sliding frame 10, a third elastic member 13 is arranged between the third bearing seat 12 and the sliding frame 10, the sliding direction of the third bearing seat 12 is perpendicular to the sliding direction of the sliding frame 10, and a pair of first connecting rods 73 are rotatably connected to the pair of third bearing seats 12 one by one.

[0090] When the collecting roller 71 is continuously wound, the diameter of the bacterial nanocellulose film wound thereon is continuously increased, and no matter it is against the cutting blade 62 above it or against the bacterial nanocellulose film on the rotating drum 3, the sliding frame 10 and the third bearing seat 12 can slide, so that the collecting roller 71 has sufficient displacement space, and at the same time the transmission effect of the tensioning wheel 711, the first transmission belt 74 and the second transmission belt 79 are realized.

[0091] The first elastic member 712 and the second bearing seat 713 are used for automatic reset and tension of the tensioning wheel 711 and for enabling the tensioning wheel 711 to rotate against the first transmission belt 74 or the second transmission belt 79. The second elastic member 11 is used for automatic reset and tension of the sliding frame 10. The third elastic member 13 is used for automatic reset and tension of the third bearing seat 12.

[0092] In one embodiment of the present invention, a second motor 14 is fixedly connected to the support plate 52 , an output shaft of the second motor 14 is connected to a cam 15 , a connecting plate 16 is fixedly connected to the sliding frame 10 , and the cam 15 is used to abut against a pair of connecting plates 16 .

[0093] In order to improve the collection effect of the collecting roller 71, the collecting roller 71 needs to be close to the bacterial nanocellulose membrane, so as to avoid interference between the collecting roller 71 and the bacterial nanocellulose membrane when the collecting roller 71 moves toward the drum 3. The cam 15 is driven to rotate by the second motor 14 to push a pair of connecting plates 16 to move away from each other, thereby driving the collecting roller 71 to move synchronously through the sliding frame 10. When the collecting roller 71 is in a suitable position, the second motor 14 continues to rotate to make the cam 15 release the thrust on the pair of connecting plates 16, and the sliding frame 10 can be automatically reset through the second elastic member 11, so that the collecting roller 71 is close to the bacterial nanocellulose membrane.

[0094] In one embodiment of the present invention, an escape hole is provided on the mounting frame 4, which is located above the transfer mechanism 8 and on the moving track of the collecting mechanism 7. The escape hole can facilitate the collecting roller 71 to directly unwind the bacterial nanocellulose membrane onto the transfer mechanism 8.

[0095] In one embodiment of the present invention, the transfer mechanism 8 is a belt conveyor.

[0096] Furthermore, the circumferential side edges of the drum 3 may be coated with a smooth coating to prevent the culture medium from adhering, thereby preventing the bacterial nanocellulose film from forming on the circumferential side edges of the drum 3 .

[0097] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0098] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A bacterial nanocellulose membrane continuous production device, characterized in that: include: A box body (1) with an open top, wherein the box body (1) contains a culture medium; A rotating mechanism (2) is arranged on the housing (1), and a plurality of rotating drums (3) are arranged on the rotating mechanism (2), wherein the rotating drums (3) are partially immersed in the culture medium so that a bacterial nanocellulose film is formed on the end surface of the rotating drum (3); A mounting frame (4) is arranged on one side of the housing (1); a plurality of moving mechanisms (5) are arranged on the mounting frame (4); the plurality of moving mechanisms (5) correspond to the plurality of rotating drums (3) one by one; the moving mechanisms (5) are arranged on one side of the housing (1); a demoulding mechanism (6) and a collecting mechanism (7) are arranged on the moving mechanism (5); the collecting mechanism (7) is located below the demoulding mechanism (6); the demoulding mechanism (6) is used to cut the bacterial nanocellulose film on the end surface of the rotating drum (3); and the collecting mechanism (7) is used to collect and transfer the bacterial nanocellulose film cut by the demoulding mechanism (6); The transport mechanism (8) is arranged below the plurality of moving mechanisms (5), and the transport mechanism (8) is used to receive and transport the bacterial nanocellulose membrane transferred by the collecting mechanism (7).

2. A bacterial nanocellulose film continuous production device according to claim 1, characterized in that: The rotating mechanism (2) comprises: A first motor (21) is fixedly mounted on one side of the box body (1); The rotating shaft (22) is rotatably connected to the housing (1) via a first bearing seat (23); one end of the rotating shaft (22) is connected to the output shaft of the first motor (21); and the plurality of rotating drums (3) are fixedly connected to the rotating shaft (22).

3. The bacterial nanocellulose film continuous production device according to claim 1, characterized in that: The moving mechanism (5) comprises: A multi-stage telescopic cylinder (51) is fixedly mounted on the mounting frame (4), and an output end of the multi-stage telescopic cylinder (51) faces the rotating drum (3); A support plate (52) is fixedly connected to the output end of the multi-stage telescopic cylinder (51), and the demoulding mechanism (6) and the collecting mechanism (7) are arranged on the support plate (52).

4. A bacterial nanocellulose film continuous production device according to claim 3, characterized in that: The demoulding mechanism (6) comprises: A double-outlet cylinder (61) is fixedly mounted on the support plate (52); A pair of cutting blades (62) are connected to the two output shafts of the double-outlet cylinder (61) through connecting rods. The pair of cutting blades (62) are respectively located on both sides of the rotating drum (3). When the two output ends of the double-outlet cylinder (61) are extended or retracted, the pair of cutting blades (62) move closer to or away from the end surface of the rotating drum (3).

5. The bacterial nanocellulose film continuous production device according to claim 4, characterized in that: The collecting mechanism (7) comprises: A pair of collecting rollers (71), respectively located on both sides of the rotating drum (3) and corresponding one to one with the pair of cutting blades (62); A second motor (72) is fixedly mounted on the support plate (52); A transmission assembly is connected to the output shaft of the second motor (72), and the transmission assembly is connected to the two collecting rollers (71).

6. A bacterial nanocellulose film continuous production device according to claim 5, characterized in that: The transmission assembly comprises: A pair of first connecting rods (73), corresponding to and connected to the pair of collecting rollers (71) respectively; A first transmission belt (74) is transmission-connected between the output shaft of the second motor (72) and any one of the first connecting rods (73) via a pair of first transmission wheels (75); a second connecting rod (76) rotatably connected to the support plate (52); a second spur gear (77) is fixedly connected to the second connecting rod (76); the second spur gear (77) is meshed with a first spur gear (78); the first spur gear (78) is connected to an output shaft of the second motor (72); A second transmission belt (79) is transmission-connected between the second connecting rod (76) and another of the first connecting rods (73) via a pair of second transmission wheels (710); A pair of tension wheels (711) are rotatably connected to the support plate (52) via a first elastic member (712) and a second bearing seat (713), and the pair of tension wheels (711) are respectively in contact with the first transmission belt (74) and the second transmission belt (79).

7. A bacterial nanocellulose film continuous production device according to claim 6, characterized in that: The support plate (52) is provided with a pair of sliding grooves (9), a sliding frame (10) is slidably connected in the sliding grooves (9), a second elastic member (11) is arranged between the sliding frame (10) and the sliding grooves (9), a third bearing seat (12) is slidably connected in the sliding frame (10), a third elastic member (13) is arranged between the third bearing seat (12) and the sliding frame (10), the sliding direction of the third bearing seat (12) is perpendicular to the sliding direction of the sliding frame (10), and a pair of the first connecting rods (73) are rotatably connected in the pair of the third bearing seats (12) one by one.

8. The bacterial nanocellulose membrane continuous production device according to claim 7, characterized in that: A second motor (14) is fixedly connected to the support plate (52), an output shaft of the second motor (14) is connected to a cam (15), a connecting plate (16) is fixedly connected to the sliding frame (10), and the cam (15) is used to abut against a pair of the connecting plates (16).

9. The bacterial nanocellulose membrane continuous production device according to claim 1, characterized in that: The mounting frame (4) is provided with an escape opening, and the escape opening is located above the transfer mechanism (8) and on the moving track of the collection mechanism (7).

10. The bacterial nanocellulose film continuous production device according to claim 1, characterized in that: The transfer mechanism (8) is a belt conveyor device.

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