Semi-submersible energy-saving alkalization reaction structure for cocoa alkalization

Abstract

This invention discloses a semi-submersible, energy-saving alkalization reaction structure for cocoa alkalization, relating to the field of alkalization reaction equipment. It includes a prefabricated cavity with positioning anchors uniformly fixedly connected circumferentially to its outer bottom surface; each anchor has a hydraulic lifting cylinder embedded within it. A base plate is provided on the top surface of the base, with the piston rods of the hydraulic lifting cylinders detachably mounted to the base plate. Columns are uniformly fixedly mounted circumferentially on the top surface of the base plate, with support bars fixedly connected to the inner sides of each column. Hydraulic telescopic cylinders are embedded within the columns, with connecting plates fixedly mounted on the piston rods of the telescopic cylinders, and these connecting plates are fixedly connected to the lid of the ribbon reactor. The advantages of this invention are: by integrating the hydraulic lifting cylinders and the columns and telescopic cylinders into an integrated semi-submersible layout within the pit and prefabricated cavity, the ribbon reactor achieves flexible lifting, stable support, and convenient maintenance, effectively reducing installation difficulty and production energy consumption, and ensuring the stable and efficient cocoa alkalization reaction.

Description

Technical Field

[0001] This invention belongs to the field of alkalization equipment, specifically to the field of cocoa alkalization, and more specifically to a semi-submersible energy-saving alkalization reaction structure for cocoa alkalization. Background Technology

[0002] Cocoa alkalization is a core process in cocoa processing. Its main purpose is to neutralize the acidic substances in natural cocoa using an alkaline medium (such as potassium carbonate solution), thereby improving cocoa flavor, deepening product color, and enhancing the solubility of cocoa powder to meet the needs of subsequent food processing such as chocolate, baking, and beverages. Ribbon reactors are widely used in cocoa alkalization reactions due to their uniform stirring and excellent mixing effect. Their operational stability, ease of operation, energy efficiency, and hygiene and safety directly affect the production efficiency, product quality, and production cost of cocoa alkalization.

[0003] Currently, most ribbon reactors used for cocoa alkalization adopt the traditional ground-fixed installation structure, which directly fixes the reactor to the factory floor using brackets. Traditional fixed ribbon reactors are large and heavy, requiring the construction of a temporary hoisting platform and the use of large hoisting equipment to accurately hoist the reactor onto the brackets. The installation process is cumbersome, time-consuming, and labor-intensive. Furthermore, if the reactor needs to be moved or overhauled later, the entire support structure must be disassembled, which is extremely difficult and seriously affects the continuity of production.

[0004] Meanwhile, the cocoa alkalization reaction requires maintaining a stable temperature. Traditional ground-mounted reactors are directly exposed to the external environment, resulting in rapid heat loss and necessitating continuous energy consumption for heating and insulation to maintain a stable reaction temperature. Furthermore, the reactor's feed inlet is located high up, requiring the installation of feeding equipment such as elevators, which further increases the equipment's operating power consumption and overall production energy consumption.

[0005] Furthermore, alkalization is a food processing technique that demands extremely high cleanliness from the reactor. Regular, comprehensive cleaning and maintenance of the reactor interior and the screw ribbon are essential to prevent material residue and bacterial growth, which could compromise product hygiene and safety. However, traditional fixed reactors have a lid that is fixedly connected to the reactor body and cannot be raised or lowered independently. The screw ribbon cannot be completely removed from the reactor, requiring personnel to enter the reactor for cleaning and maintenance. This is not only cumbersome and inefficient but also poses safety risks. On the other hand, the separate design of the lid and body, with the integrated screw ribbon for stirring on the lid, requires significant space for disassembly and assembly. Traditional fixed reactors have limited surrounding space after installation, making it difficult to disassemble the lid and integrated screw ribbon, resulting in a cumbersome process that increases the workload and difficulty of cleaning and maintenance, further extending equipment downtime.

[0006] Furthermore, although some reactors are installed underground, they still employ a fixed structure, secured by supports erected within the pit. The pit environment is humid, requiring anti-corrosion treatment. The confined space within the pit, further compressed by the supports, not only increases the difficulty of reactor installation and disassembly but also makes subsequent cleaning and maintenance of the reactors, supports, and related components extremely inconvenient. Limited operating space for personnel poses safety hazards. Summary of the Invention

[0007] This invention addresses the technical problems of difficult maintenance and high energy consumption in cocoa alkalization reaction equipment by providing a semi-submersible, energy-saving alkalization reaction structure. Through an integrated semi-submersible layout design that combines hydraulic lifting cylinders, columns, and hydraulic telescopic cylinders within the pit and prefabricated cavity, the spiral reactor achieves flexible lifting, stable support, and convenient maintenance, effectively reducing installation difficulty and energy consumption, and ensuring the stable and efficient operation of the cocoa alkalization reaction.

[0008] The technical solution adopted in this invention is as follows: A semi-submersible energy-saving alkalization reaction structure for cocoa alkalization is provided, including a ribbon reactor and a foundation pit set on a support surface. A prefabricated cavity is provided within the foundation pit. Positioning anchors are uniformly fixedly connected circumferentially to the outer bottom surface of the prefabricated cavity. The positioning anchors are embedded in the foundation pit, and a hydraulic lifting cylinder is embedded within each anchor. The piston rod of the hydraulic lifting cylinder penetrates into the prefabricated cavity. A base platform is coaxially fixedly connected to the bottom surface of the prefabricated cavity. A base plate is provided on the top surface of the base platform. The piston rod of the hydraulic lifting cylinder... Each component is detachably installed on the substrate. Columns are uniformly fixedly installed on the top surface of the substrate along the circumference. Support bars are fixedly connected to the inner side of each column. The support bars abut against the outer surface of the ribbon reactor. Supports are uniformly fixedly connected to the outer wall of the ribbon reactor along the circumference. The positions and numbers of the supports correspond to the support bars, and the supports abut against the top surface of each support bar and are fixed with bolts. Hydraulic telescopic cylinders are embedded in the columns. Connecting plates are fixedly installed on the piston rods of the hydraulic telescopic cylinders. The connecting plates are fixedly connected to the lid of the ribbon reactor.

[0009] A foundation pit is excavated at the reserved location for the ribbon reactor in the cocoa alkalization process. A prefabricated container is placed within the pit, and its positioning anchors are embedded into the pit before being backfilled and fixed to ensure stable positioning. A hydraulic lifting cylinder allows for flexible raising and lowering of the base plate and ribbon reactor. During installation, the base plate can be lifted to be flush with the support surface, significantly reducing the difficulty of lifting and moving the reactor. During operation, the ribbon reactor can be lowered into the underground prefabricated container, achieving a semi-submersible layout. Combined with the underground constant temperature environment, this reduces heat loss from the reactor body, lowering the heating and insulation energy consumption required for cocoa alkalization. Simultaneously, components such as the feed port and manhole on the reactor lid are close to the ground, eliminating the need for lifting equipment and saving electricity. Furthermore, it eliminates the need for a high operating platform, improving efficiency for feeding and inspection. The safety and convenience of the equipment are ensured by the coordinated use of columns, support bars, and supports, which provide robust support for the reactor. The auxiliary support ring further enhances structural stability, preventing reactor swaying caused by stirring vibrations. The hydraulic telescopic cylinder can independently drive the reactor lid to rise and fall, simultaneously bringing the screw ribbon out of the reactor body. This facilitates thorough cleaning and maintenance of the reactor interior and the screw ribbon, meeting the hygiene requirements for food-grade cocoa processing and guaranteeing the quality of products from subsequent alkalization reactions. Furthermore, the detachable connection design of each component, combined with the lifting function of the hydraulic lifting cylinder, significantly simplifies equipment maintenance procedures. Hydraulic components and the reactor can be quickly disassembled and repaired, reducing downtime and ensuring the continuity of cocoa alkalization production. The overall structure balances practicality, energy efficiency, stability, and convenience, fully adapting to the process requirements of cocoa alkalization.

[0010] To further optimize this technical solution, the top surface of the positioning anchor is coaxially provided with a slot, and the prefabricated cavity is provided with through holes that match the position and number of slots. The diameter of the through holes and the slots are the same and larger than the diameter of the hydraulic lifting cylinder. The cylinder body of the hydraulic lifting cylinder is fitted with the slot, the bottom of the hydraulic lifting cylinder abuts against the inner bottom surface of the slot, and the top of the cylinder extends into the prefabricated cavity. It is then fixedly installed in the prefabricated cavity by matching flanges and bolts.

[0011] The slots on the positioning anchors provide precise installation space for the hydraulic lifting cylinder, ensuring coaxiality and preventing offset or jamming during lifting. This ensures smooth lifting and is suitable for the stable lifting requirements of the ribbon reactor. The slot and through-hole dimensions allow for ample space for the installation of the hydraulic lifting cylinder's inlet and outlet oil lines, preventing interference between the lines and the cavity or positioning anchors. This ensures smooth oil flow and reduces the risk of line wear and leakage. The hydraulic lifting cylinder is fixed to the prefabricated cavity via flanges and bolts, enabling detachable installation. This allows for quick disassembly and replacement of the hydraulic lifting cylinder during subsequent maintenance, improving equipment maintenance efficiency and reducing maintenance costs.

[0012] To further optimize this technical solution, the top surface of the substrate is uniformly provided with adapter holes along the circumference. The adapter holes correspond to the number and position of the hydraulic lifting cylinders, and the diameter of the adapter holes is larger than the diameter of the hydraulic lifting cylinders. The piston rod of the hydraulic lifting cylinder extends to the top surface of the substrate and is detachably installed with the substrate by means of a connector.

[0013] The adapter hole facilitates the extension of the piston rod of the hydraulic lifting cylinder to the top surface of the base plate, making subsequent disassembly and assembly easier. Furthermore, its diameter is larger than the cylinder body diameter of the hydraulic lifting cylinder, ensuring that the disassembly and assembly of the hydraulic lifting cylinder are not interfered with by the adapter hole, thus improving the flexibility of construction and use.

[0014] To further optimize this technical solution, the connector includes a mounting plate disposed above the adapter hole. Spacers are evenly distributed circumferentially on the bottom surface of the mounting plate. Each spacer is fixedly connected to the top surface of the base plate. Fixing bolts matching the spacers are evenly distributed on the mounting plate. The fixing bolts are threadedly connected to the spacers. The piston rod of the hydraulic lifting cylinder is fixedly installed on the mounting plate by means of matching flanges and bolts.

[0015] The mounting plate, supported by the spacer, provides construction space for assembling the piston rod of the hydraulic lifting cylinder, facilitating its disassembly and maintenance, and improving construction convenience and operational flexibility.

[0016] To further optimize this technical solution, the prefabricated cavity is a box with a top opening, which is welded and fixed with steel plates. The thickness of the steel plates is 8-12 mm. The inner layer of the box is provided with an anti-corrosion lining layer, and the outer side of the box is provided with an anti-corrosion outer lining layer, an insulation layer and a casting and fixing layer from the inside to the outside.

[0017] The steel plate welded box has sufficient rigidity and load-bearing capacity to stably support the weight of the ribbon reactor and materials, and resist the impact force generated by stirring vibration. In addition, the multi-layer structure of the inner and outer layers of the box protects the cavity. The prefabricated structure of the box greatly shortens the installation cycle and reduces the difficulty of on-site construction.

[0018] To further optimize this technical solution, the anti-corrosion inner lining is an epoxy resin coating applied to the inner surface of the box, with a thickness of 0.6-1.2 mm; the anti-corrosion outer lining is an asphalt anti-corrosion coating with a thickness of 0.5-0.7 mm; the insulation layer is a polystyrene board fixedly connected to the box, with a thickness of 25-35 mm; and the cast-in-place fixing layer is a concrete layer with a thickness of 50-70 mm.

[0019] The epoxy resin coating, as an anti-corrosion inner lining, effectively resists the corrosion of alkaline media during the cocoa alkalization process, with no toxic or harmful substances leaching out, meeting the hygiene requirements of food processing. It also has good sealing properties to prevent material leakage. The asphalt anti-corrosion coating, as an outer lining, effectively isolates the corrosion of underground soil and moisture, extending the service life of the cavity. The polystyrene board, as an insulation layer, provides stable insulation, reduces heat loss from the vessel, lowers the heating and insulation energy consumption of the cocoa alkalization reaction, and, in conjunction with the underground environment, achieves constant temperature, ensuring stable reaction temperature. The concrete pouring fixing layer achieves a firm bond between the cavity and the foundation pit, improving overall stability. Moreover, the material is common and the cost is controllable, balancing fixing effect and economy.

[0020] To further optimize this technical solution, an assembly notch is coaxially provided on the top surface of the column. The cylinder body of the hydraulic lifting cylinder is fitted with the assembly notch, the bottom surface of the cylinder body abuts against the inner bottom surface of the assembly notch, the top surface protrudes from the top surface of the column, and is fixedly connected to the top surface of the column through a flange.

[0021] The installation notch provides precise installation and positioning space for the hydraulic telescopic cylinder, ensuring that the hydraulic telescopic cylinder is coaxially assembled with the column, avoiding misalignment or jamming during the telescopic process, ensuring smooth lifting and lowering of the vessel cover, and not interfering with the oil inlet and outlet oil circuit layout, facilitating subsequent maintenance and improving the flexibility of equipment use.

[0022] To further optimize this technical solution, a diagonal bracing beam is fixedly connected to the bottom of the outer side wall of the column along the circumferential direction, and the diagonal bracing beam is fixedly connected to the top surface of the base plate.

[0023] The diagonal bracing beams can transfer the vertical and lateral forces on the column to the base plate, forming a triangular support structure, which greatly improves the support rigidity and stability of the column.

[0024] To further optimize this technical solution, a support ring is coaxially arranged above the substrate. The inner ring wall of the support ring abuts against the outer wall of the ribbon reactor. Support legs are fixedly connected to the bottom surface of the support ring along the circumferential direction, and the support legs are respectively fixedly connected to the substrate.

[0025] The top surface of the substrate abuts against the outer wall of the reactor body via a support ring fixed by the legs, thereby supporting the bottom of the ribbon reactor. This, along with the side support of the support bars and the top fixation of the support base, enhances the installation firmness of the ribbon reactor and ensures the stability of its use.

[0026] To further optimize this technical solution, the outer surface of the support ring is provided with an adhesive layer, which is a polyurethane rubber layer with a thickness of 2-4 mm.

[0027] By applying a polyurethane rubber coating to the outside of the support ring, the direct hard contact between the ribbon reactor and the support ring is avoided, which would cause wear and extend the service life of both the ribbon reactor and the support ring.

[0028] The beneficial effects of this invention are as follows: 1. By installing the ribbon reactor in a prefabricated cavity and burying it underground, combined with the insulation layer outside the cavity and the constant temperature environment underground, the heat loss of the reactor can be effectively reduced, thereby reducing the heating and insulation energy consumption of the reactor to maintain a stable alkalization reaction temperature. In addition, the semi-submersible design of the reactor makes the covered feed port close to the bottom surface, eliminating the need for feeding equipment such as elevators, reducing the power consumption of equipment operation, and thus reducing the energy consumption cost of cocoa alkalization production. 2. The cavity and positioning anchor are embedded in the foundation pit and fixed by the concrete pouring layer to ensure the stability of the cavity. The positioning anchor is equipped with a hydraulic lifting cylinder to lift the base plate to be flush with the support surface, which facilitates the transfer and installation of the reactor and improves the flexibility of use. After the base plate and reactor are put into the cavity, the base plate is placed on the base platform to avoid the lifting cylinder from operating under pressure for a long time, thus ensuring the safety and reliability of use. 3. The base plate of the spiral ribbon reactor is supported at the bottom of the reactor body by a support ring, and the support bars on the column support the sides of the reactor body. After the support on the reactor body is installed with the support bars, the top of the reactor body is fixed. This provides multi-angle fixation for the reactor, ensuring its sturdiness and operational stability. The column is connected to the reactor cover by an embedded hydraulic telescopic cylinder, which allows the reactor cover to be separated from the reactor body. Combined with the semi-submersible design of the reactor, the reactor cover and the spiral ribbon can be pushed out of the reactor body, making it easy to separate the spiral ribbon and the reactor body for maintenance and cleaning. The operation is simple and the use is more flexible. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the semi-submersible energy-saving alkalization reaction structure for cocoa alkalization in this embodiment. Figure 2 This is a schematic diagram of the state structure of the ribbon reactor with the prefabricated cavity extended in this embodiment; Figure 3 This is a cross-sectional structural diagram of the assembly of the prefabricated cavity and the positioning anchor in this embodiment; Figure 4 This is a schematic diagram of the disassembled structure of the positioning anchor and the hydraulic lifting cylinder in this embodiment; Figure 5 This is a schematic diagram of the planar structure of the assembly of the box body and the positioning anchor in this embodiment; Figure 6 This is a schematic diagram of the assembly structure of the substrate, column, mounting plate, and support ring in this embodiment; Figure 7 This is a schematic diagram of the substrate structure in this embodiment; Figure 8 This is a schematic diagram of the disassembled structure of the column and the hydraulic telescopic cylinder in this embodiment; Figure 9This is a schematic diagram of the spiral ribbon reactor in this embodiment.

[0030] In the diagram, 1. Ribbon reactor; 101. Support; 2. Prefabricated cavity; 201. Through hole; 202. Box body; 2021. Anti-corrosion inner lining; 2022. Anti-corrosion outer lining; 2023. Insulation layer; 2024. Cast-in-place fixing layer; 3. Positioning anchor; 301. Slot; 4. Hydraulic lifting cylinder; 5. Base; 6. Base plate; 601. Adapter hole; 602. Spacer; 7. Column; 701. Assembly notch; 8. Support bar; 9. Hydraulic telescopic cylinder; 901. Connecting piece; 10. Mounting plate; 1001. Fixing bolt; 11. Diagonal brace beam; 12. Support ring; 1201. Support leg; 13. Drying box; 1301. Cover; 1302. Flow hole. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 5 The semi-submersible energy-saving alkalization reaction structure for cocoa alkalization first selects a suitable alkalization reaction station in the plant area according to the requirements of the cocoa alkalization process. Then, a foundation pit is dug at the preset installation position of the ribbon reactor 1. The prefabricated cavity is placed in the foundation pit. The prefabricated cavity is a box structure 202 made of 8-12 mm steel plate welded together. The inner surface of the box 202 is provided with an anti-corrosion lining layer 2021. The anti-corrosion lining layer 2021 is an epoxy resin layer coated on the inner surface of the box 202. When the epoxy resin layer is coated on the inner surface of the box 202, the roughness of the inner surface of the box 202 is controlled by sandblasting to facilitate the coating of epoxy resin. The coating thickness of the epoxy resin layer is controlled at 0.6-1.2 mm. After the epoxy resin layer is cured, the box 202 is tested for sealing to ensure that the box 202 has no leakage. The outer side of the box 202 is provided with an anti-corrosion lining layer 2022, an insulation layer 2023, and a casting fixing layer 2024 in sequence from the inside to the outside. The anti-corrosion lining layer 2022 is an asphalt anti-corrosion coating applied to the outer surface of the box 202. The asphalt anti-corrosion coating is applied multiple times to control the coating thickness to 0.5-0.7 mm. The insulation layer 2023 is made of 25-35 mm thick polystyrene board, which is bonded to the outer surface of the box 202 with adhesive. Then, the box 202 is hoisted into the foundation pit and adjusted to be level. Concrete is then poured into the gap between the box 202 and the foundation pit. After the concrete solidifies, the casting fixing layer 2024 is formed to fix the box 202. The thickness of the casting fixing layer 2024 is 50-70 mm, thus constructing the assembly space of the semi-submersible ribbon reactor 1. Please see the appendix Figure 1-4 A positioning anchor 3 is fixedly connected circumferentially to the outer bottom surface of the prefabricated cavity 2. The positioning anchor 3 can be welded to the bottom surface of the box body 202. When excavating the foundation pit, according to the position of the box body 202 and the positioning anchor 3, a hole is excavated downward in the foundation pit to accommodate the positioning anchor 3. When pouring concrete, the concrete is poured into the hole simultaneously to fix the positioning anchor 3. The positioning anchor 3 increases the fixing firmness of the box body 202. A slot 301 is coaxially opened on the top surface of the positioning anchor 3, and a matching slot 301 is opened on the box body 202. The through hole 201 and the slot 301 have the same diameter as the through hole 201. The slot 301 in the positioning anchor 3 provides installation space for the hydraulic lifting cylinder 4, and the diameter of the slot 301 is larger than the cylinder body diameter of the hydraulic lifting cylinder 4 so that the oil inlet pipe and oil outlet pipe of the hydraulic lifting cylinder 4 can be laid in the slot 301. After the hydraulic lifting cylinder 4 is placed in the slot 301, the bottom of the hydraulic lifting cylinder 4 abuts against the inner bottom surface of the slot 301, and the top of the cylinder protrudes from the slot 301 and the through hole 201 into the housing 202, and is fixedly connected to the housing 202 by means of flanges and bolts. Please see the appendix Figure 2-3 and appendix Figure 6-7 A base 5 is coaxially mounted on the bottom of the housing 202. The base 5 is a solid structure and is welded and fixed to the housing 202. The anti-corrosion lining layer 2021 is also coated on the base 5. A base plate 6 is mounted on the base 5. The base plate 6 is fixedly installed with the piston rod of the hydraulic lifting cylinder 4. The base plate 6 has adapter holes 601 along its circumference. The adapter holes 601 correspond to the positions and number of through holes 201 on the hydraulic lifting cylinder 4 and the housing 202. The piston rod passes through the adapter holes 601 to the top of the base plate 6 and is installed on the base plate 6 by means of a connector. The connector includes components provided in the adapter holes 601. The piston rod is fixedly installed on the mounting plate 10 above the base plate 6 by means of flange and bolts. Spacers 602 are evenly arranged around the bottom surface of the mounting plate 10. The spacers 602 are all fixedly connected to the top surface of the base plate 6. Fixing bolts 1001 matching the spacers 602 are evenly arranged on the mounting plate 10. The fixing bolts 1001 are threadedly connected to the spacers 602 respectively, thereby transferring the piston rod of the hydraulic lifting cylinder 4 to the base plate 6. When installing the ribbon reactor 1, the hydraulic lifting cylinder 4 lifts the base plate 6 upward so that it is flush with the support surface, reducing the difficulty of installing and moving the ribbon reactor 1. Please see the appendix Figure 2 Appendix Figure 6 Appendix Figure 9Columns 7 are uniformly fixedly installed circumferentially on the top surface of the substrate 6. After the ribbon reactor 1 is hoisted above the substrate 6, it is hoisted between the columns 7. Support bars 8 are fixedly connected to the inner side of each column 7. The support bars 8 are in contact with the outer surface of the ribbon reactor 1, and the contact surface between the support bars 8 and the ribbon reactor 1 is consistent with the outer contour of the ribbon reactor 1, ensuring the stability of the support for the ribbon reactor 1. In addition, a support 101 is welded and fixed circumferentially on the upper part of the outer surface of the ribbon reactor 1. The support 101 is placed on the top surface of the support bars 8 and fixed to the support with bolts. On the support bar 8, a support ring 12 is coaxially fixedly installed on the top surface of the base plate 6 via the support leg 1201. The support ring 12 abuts against the bottom of the outer wall of the ribbon reactor 1, thereby assisting in supporting the ribbon reactor 1 and enhancing the stability of the support and fixation of the ribbon reactor 1. The outer surface of the support ring 12 is treated with a rubber coating, such as a polyurethane rubber coating layer with a coating thickness of 2-4 mm, thereby avoiding hard contact between the ribbon reactor 1 and the support ring 12, thus avoiding contact wear and extending the service life of the ribbon reactor 1 and the support ring 12. Please see the appendix Figure 2 Appendix Figure 6 Appendix Figure 8 The top surface of the column 7 is coaxially provided with an assembly notch 701, which provides assembly space for the hydraulic lifting cylinder. The cylinder body of the hydraulic lifting cylinder is installed into the assembly notch 701, and its bottom abuts against the bottom surface of the assembly notch 701. The oil inlet and outlet of the hydraulic lifting cylinder protrude from the outside of the column 7 through the assembly notch 701 to connect the oil circuit. The top of the hydraulic lifting cylinder protrudes from the top surface of the column 7 and is fixedly installed to the column 7 by means of bolts and flanges. The piston rod of the hydraulic lifting cylinder is fixedly installed to the lid of the ribbon reactor 1 by means of a connecting piece 901. By lifting the lid, the hydraulic lifting cylinder can bring the ribbon of the ribbon reactor 1 out of the reactor body to clean and maintain the ribbon and the reactor body, ensuring the flexibility and convenience of subsequent use. Please see the appendix Figure 6 Appendix Figure 8A diagonal brace 11 is fixedly connected circumferentially to the bottom of the outer side wall of the column 7. The diagonal brace 11 is fixedly connected to the top surface of the base plate 6. The diagonal brace 11 enhances the stability and firmness of the support for the column 7. After the ribbon reactor 1 is installed and fixed on the base plate 6, the hydraulic lifting cylinder 4 pulls the base plate 6 and the ribbon reactor 1 into the housing 202 and places the base plate 6 on the base 5, so that the base 5 supports the base plate 6 and the ribbon reactor 1. The support of the hydraulic lifting cylinder 4 is then released to avoid damage caused by the hydraulic lifting cylinder 4 supporting the base plate 6 and the ribbon reactor 1 for a long time. When the hydraulic lifting cylinder 4 needs maintenance, first disconnect the piston rod from the mounting plate 10, then remove the mounting plate 10 from the housing 202. The hydraulic lifting cylinder 4 can then be removed from the positioning anchor 3. The operation is simple and flexible. The hydraulic telescopic cylinder 9 in the column 7 locks the position of the lid, sealing the lid to the body. After the hydraulic telescopic cylinder 9 lifts the lid, it releases the seal on the body and pulls the bolt out of the body, allowing for inspection, maintenance, and cleaning of the bolt and the body, ensuring flexibility of use.

[0033] The working principle of this semi-submersible energy-saving alkalization reaction structure for cocoa alkalization is as follows: A foundation pit is excavated at the selected alkalization reaction site within the plant. The inner and outer layers of the prefabricated box 202 are treated with anti-corrosion measures, and an insulation layer 2023 is added to the outer layer of the box 202. The box 202 is then hoisted into the foundation pit. Positioning anchors 3 on the bottom of the box 202 are inserted into pre-set holes in the foundation pit. The box 202 is then adjusted to a horizontal position and held in place. Cement is then filled into the gap between the foundation pit and the box 202. After the cement hardens, the box 202 is fixed. Once the box 202 is fixed, a hydraulic lifting cylinder 4 is inserted through a through-hole 201 on the box 202 into the slot 301 of the positioning anchor 3. The diameters of the through-hole 201 and the slot 301 are larger than the cylinder diameter of the hydraulic lifting cylinder 4, effectively preventing interference with the oil inlet and outlet pipelines on the cylinder and ensuring smooth oil circuit layout. After the bottom of the hydraulic lifting cylinder 4 contacts the bottom of the slot 301, its top is located inside the housing 202 and is fixed by bolts and flanges. The operation is simple and provides convenience for subsequent maintenance and disassembly. Then, the base plate 6 is hoisted into the housing 202, and the position of the base plate 6 is adjusted so that the adapter hole 601 on it corresponds to the position of the piston rod of the hydraulic lifting cylinder 4. After the base plate 6 is placed on the base 5 inside the housing 202, the piston rod of the hydraulic lifting cylinder 4 extends through the adapter hole 601 to the top surface of the base plate 6. Then, the mounting plate 10 is aligned with the spacer 602 on the top surface of the base plate 6, and the mounting plate 10 and the spacer 602 are threaded together and fixed by fixing bolts 1001. Finally, the piston rod of the hydraulic lifting cylinder 4 is fixed to the mounting plate 10 by flanges and bolts, so that the hydraulic lifting cylinder 4 and the base plate 6 are firmly installed and convenient for subsequent disassembly and maintenance of the hydraulic lifting cylinder 4, improving the flexibility of equipment use. When installing the ribbon agitator onto the base plate 6, the hydraulic lifting cylinder 4 lifts the base plate 6 until it is flush with the support surface, reducing the difficulty of hoisting and transferring the ribbon reactor 1. The ribbon reactor 1 is then hoisted above the base plate 6, and its bottom side wall is tightly abutted against the support ring 12 on the base plate 6, achieving initial positioning and support of the reactor body. Subsequently, the column 7 is fixedly installed on the top surface of the base plate 6, and the diagonal bracing beam 11 at the bottom of the outer side wall of the column 7 is fixedly connected to the top surface of the base plate 6 to enhance the support stability and firmness of the column 7. The support bar 8 on the inner side of the column 7 fits and abuts against the outer surface of the ribbon reactor 1, and the contact surface of the support bar 8 matches the outer contour of the ribbon reactor 1. At the same time, the support 101 on the outer side wall of the ribbon reactor 1 is placed on the top surface of the support bar 8 and fixed by bolts, achieving multiple stable supports for the ribbon reactor 1. After the ribbon reactor 1 and the base plate 6 are installed, the hydraulic lifting cylinder 4 is controlled to retract, lowering the base plate 6 and the ribbon reactor 1 together into the housing 202 until the base plate 6 is stably placed on the base 5. The base 5 then bears the entire weight of the base plate 6 and the ribbon reactor 1, relieving the supporting load on the hydraulic lifting cylinder 4 and preventing damage caused by long-term stress on the hydraulic lifting cylinder 4.Subsequently, the lid of the ribbon reactor 1 is fixedly assembled with the piston rod of the hydraulic telescopic cylinder 9 at the top of the column 7 via a connecting piece 901. At this point, only the lid of the ribbon reactor 1 is exposed above the supporting surface. When using the ribbon reactor 1 to perform alkalization reaction on cocoa, since only the lid protrudes from the supporting surface, components such as the feed port, manhole, and temperature and pressure measuring instruments on the lid are close to the ground. This eliminates the need to build a high operating platform, significantly improving the safety and convenience of feeding, daily inspection, and equipment maintenance. Simultaneously, the feed port's proximity to the supporting surface eliminates the need for feeding equipment such as elevators, effectively saving on equipment operating power consumption. Furthermore, the ribbon reactor 1 is placed inside an underground prefabricated enclosure 202. Combined with the insulation layer 2023 on the outside of the enclosure 202 and the constant temperature characteristics of the underground environment, the influence of external temperature fluctuations on the reactor body can be effectively reduced, lowering the energy consumption for heating and insulation of the reactor body. This allows the reactor body to stably maintain the 80-100℃ reaction temperature required for cocoa alkalization, achieving energy-efficient and high-performance operation of the cocoa alkalization reaction.

Claims

1. A semi-submersible energy efficient alkalization reaction structure for theobromine alkalization comprising a screw band reaction vessel (1), characterized in that: It also includes a foundation pit set on the support surface, a prefabricated cavity (2) is set in the foundation pit, and a positioning anchor (3) is uniformly fixedly connected to the outer bottom surface of the prefabricated cavity (2) along the circumference. The positioning anchor (3) is embedded in the foundation pit, and a hydraulic lifting cylinder (4) is embedded in the positioning anchor (3). The piston rod of the hydraulic lifting cylinder (4) passes into the prefabricated cavity (2). A base (5) is coaxially fixedly connected to the inner bottom surface of the prefabricated cavity (2). A base plate (6) is set on the top surface of the base plate (5). The piston rod of the hydraulic lifting cylinder (4) is detachably installed with the base plate (6). A column (7) is uniformly fixedly installed on the top surface of the base plate (6) along the circumference. The inner side of the column (7) is fixedly connected with support bars (8), the support bars (8) abut against the outer surface of the ribbon reactor (1), and the outer wall of the ribbon reactor (1) is uniformly fixedly connected with supports (101) along the circumference. The supports (101) correspond to the position and number of the support bars (8), and the supports (101) abut against the top surface of the support bars (8) and are fixed by bolts. The column (7) is embedded with a hydraulic telescopic cylinder (9), and a connecting piece (901) is fixedly installed on the piston rod of the hydraulic telescopic cylinder (9). The connecting piece (901) is fixedly connected to the lid of the ribbon reactor (1).

2. The semi-submersible energy-saving alkalization reaction structure for cocoa alkalization according to claim 1, characterized in that: The top surface of the positioning anchor (3) is coaxially provided with a slot (301), and the prefabricated cavity (2) is provided with through holes (201) that match the position and number of slots (301). The diameter of the through holes (201) and the slots (301) is the same and larger than the diameter of the hydraulic lifting cylinder (4). The cylinder body of the hydraulic lifting cylinder (4) is fitted with the slot (301). The bottom of the hydraulic lifting cylinder (4) abuts against the inner bottom surface of the slot (301), and the top of the cylinder extends into the prefabricated cavity (2). It is fixedly installed in the prefabricated cavity (2) by matching flanges and bolts.

3. The semi-submersible energy-saving alkalization reaction structure for cocoa alkalization according to claim 1, characterized in that: The top surface of the substrate (6) is uniformly provided with adapter holes (601) along the circumference. The number and position of the adapter holes (601) correspond to the hydraulic lifting cylinders (4). The diameter of the adapter holes (601) is larger than the diameter of the hydraulic lifting cylinders (4). The piston rod of the hydraulic lifting cylinders (4) extends to the top surface of the substrate (6) and is detachably installed on the substrate (6) by means of a connector.

4. The semi-submersible energy-saving alkalization reaction structure for cocoa alkalization according to claim 3, characterized in that: The connector includes a mounting plate (10) disposed above the adapter hole (601). Spacers (602) are evenly disposed around the bottom surface of the mounting plate (10). The spacers (602) are all fixedly connected to the top surface of the base plate (6). Fixing bolts (1001) matching the spacers (602) are evenly disposed on the mounting plate (10). The fixing bolts (1001) are threadedly connected to the spacers (602). The piston rod of the hydraulic lifting cylinder (4) is fixedly installed on the mounting plate (10) by means of a matching flange and bolts.

5. The semi-submersible energy-saving alkalization reaction structure for cocoa alkalization according to claim 1 or 2, characterized in that: The prefabricated cavity (2) is a box (202) with a top opening fixed by welding steel plates. The thickness of the steel plates is 8-12 mm. The inner layer of the box (202) is provided with an anti-corrosion inner lining layer (2021). The outer side of the box (202) is provided with an anti-corrosion outer lining layer (2022), a heat insulation layer (2023), and a casting and fixing layer (2024) from the inside to the outside.

6. The semi-submersible energy-saving alkalization reaction structure for cocoa alkalization according to claim 5, characterized in that: The anti-corrosion inner lining (2021) is an epoxy resin coating applied to the inner surface of the box (202), with a thickness of 0.6-1.2 mm; the anti-corrosion outer lining (2022) is an asphalt anti-corrosion coating with a thickness of 0.5-0.7 mm; the insulation layer (2023) is a polystyrene board fixedly connected to the box (202), with a thickness of 25-35 mm; the cast-in-place fixing layer (2024) is a concrete layer with a thickness of 50-70 mm.

7. The semi-submersible energy-saving alkalization reaction structure for cocoa alkalization according to claim 1, characterized in that: The top surface of the column (7) is coaxially provided with an assembly notch (701). The cylinder body of the hydraulic lifting cylinder is fitted with the assembly notch (701). The bottom surface of the cylinder body abuts against the inner bottom surface of the assembly notch (701). The top surface protrudes from the top surface of the column (7) and is fixedly connected to the top surface of the column (7) through a flange.

8. The semi-submersible energy-saving alkalization reaction structure for cocoa alkalization according to claim 1, characterized in that: The bottom of the outer side wall of the column (7) is fixedly connected with a diagonal bracing beam (11) along the circumferential direction, and the diagonal bracing beam (11) is fixedly connected to the top surface of the base plate (6).

9. The semi-submersible energy-saving alkalization reaction structure for cocoa alkalization according to claim 1, characterized in that: A support ring (12) is coaxially arranged above the substrate (6). The inner ring wall of the support ring (12) abuts against the outer wall of the ribbon reactor (1). A support leg (1201) is fixedly connected to the bottom surface of the support ring (12) along the circumferential direction, and the support leg (1201) is fixedly connected to the substrate (6) respectively.

10. The semi-submersible energy-saving alkalization reaction structure for cocoa alkalization according to claim 9, characterized in that: The outer surface of the support ring (12) is provided with a coating layer, which is a polyurethane rubber layer with a thickness of 2-4 mm.

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