A raw juice brown sugar decoction anti-bumping stirring device and method

Abstract

This invention relates to the field of brown sugar processing technology, and discloses a stirring device and method for preventing bumping during the boiling of raw brown sugar. The device includes a boiling tank, with a feed pipe fixed to the top and a discharge pipe fixed to the bottom. It also includes a drive shaft rotatably connected to the top of the boiling tank, with a drive unit on the top to rotate the shaft. This invention uses a magnetically driven piston assembly to automatically extract gas from the tank, maintaining a negative pressure environment, lowering the boiling point of the sugar solution, and achieving low-temperature boiling, effectively protecting the heat-sensitive nutrients and natural flavor of the sugar solution. The negative pressure also exerts a traction effect on the bubbles, accelerating water evaporation and preventing bumping. Furthermore, a spiral condenser tube is used to achieve efficient gas-liquid separation and condensation through centrifugal effect, and the recovered condensate is used for equipment lubrication and insulation, achieving resource reuse and improving energy efficiency.

Description

Technical Field

[0001] This invention relates to the field of brown sugar processing technology, specifically to a stirring device and method for boiling raw brown sugar without causing violent boiling. Background Technology

[0002] Brown sugar, a traditional sugarcane product, is loved by consumers because it retains most of the components of sugarcane and is rich in various minerals and vitamins. However, during the brown sugar boiling process, as water evaporates, the viscosity of the syrup gradually increases, making it difficult for the air bubbles inside to escape smoothly. This can easily lead to the accumulation of a large amount of steam. When the bubble membrane ruptures or the steam pressure increases suddenly, it can easily cause a violent "boiling" phenomenon. This not only causes the syrup to splash, resulting in waste of raw materials and safety hazards, but also damages the uniformity of the syrup, affecting the color and taste of the final brown sugar.

[0003] Currently, most traditional mechanical stirring devices are fixed paddle structures, which can only achieve rotational stirring in a plane and lack the ability to effectively shear and break up air bubbles inside the syrup, making it difficult to fundamentally prevent boiling over. In addition, traditional processes often use methods to increase the boiling temperature, but this will destroy the heat-sensitive nutrients in sugarcane juice, greatly reducing the health benefits of brown sugar. Furthermore, if the water vapor generated during the boiling process is directly released, it will not only waste heat energy but also easily cause environmental pollution. Summary of the Invention

[0004] This invention provides a stirring device for preventing bumping during the boiling of original brown sugar. A drive shaft rotates and lifts a stirring rod, creating three-dimensional stirring. Combined with dynamic wall scraping, it eliminates syrup temperature stratification and stirring dead zones, preventing localized scorching and improving heat exchange efficiency. Furthermore, magnetic coupling maintains a negative pressure environment for low-temperature boiling, protecting nutrients, preventing bumping, and improving brown sugar quality and production efficiency. This invention solves the problems mentioned in the background art, such as the difficulty of effectively preventing bumping with traditional stirring methods and the potential damage to the nutritional value of the sugar syrup during high-temperature boiling.

[0005] This invention provides the following technical solution: A device for preventing boiling over in the boiling of brown sugar includes a boiling tank, with a feed pipe fixed to the top and a discharge pipe fixed to the bottom. It also includes: a drive shaft rotatably connected to the top of the boiling tank, wherein a drive unit for driving the drive shaft to rotate is provided on the top of the boiling tank, and a stirring unit for agitating the brown sugar during boiling is installed on the drive shaft; an air extraction component installed on the top of the boiling tank to maintain the boiling tank under negative pressure during the boiling process; and a discharge section located at the bottom of the boiling tank for controlling the discharge pipe to switch between opening and closing.

[0006] As a preferred embodiment of the present invention, the driving unit includes a mounting frame, which is fixedly connected to the top of the boiling tank. A drive motor is fixedly connected to the mounting frame, and a shielding shell is fixedly connected to the output shaft of the drive motor. Multiple sets of inner magnetic blocks are fixed at equal intervals on the inner wall of the shielding shell. The top end of the drive shaft extends into the shielding shell and is fixedly connected to a driven ring. Multiple sets of outer magnetic blocks are fixed at equal intervals on the outer wall of the driven ring, and a non-contact magnetic coupling is formed between the outer magnetic blocks and the inner magnetic blocks. That is, when the inner magnetic blocks rotate with the driven ring, they can drive the outer magnetic blocks to rotate together with the driven ring.

[0007] As a preferred embodiment of the present invention, the stirring part includes a stirring shaft, a sealing box is fixedly connected to the top of the inner cavity of the cooking tank, a sleeve is slidably sealed at the bottom of the sealing box, the sleeve is slidably fitted onto the bottom end of the drive shaft, the stirring shaft is fixedly connected to the bottom end of the sleeve, a stirring rod is fixedly connected to the bottom end of the stirring shaft, a lifting plate is fixedly connected to the top of the sleeve, two sets of upper protrusions are symmetrically fixed to the bottom of the lifting plate, a positioning ring is fixedly connected to the inner wall of the sealing box, two sets of lower protrusions are symmetrically fixed to the bottom of the positioning ring, the upper and lower protrusions are adapted to each other, wherein, a limiting groove is opened on both sides of the inner cavity of the sleeve, and a limiting guide rod is fixedly connected to both sides of the bottom end of the drive shaft, and the two sets of limiting guide rods are correspondingly inserted into the limiting grooves on both sides.

[0008] As a preferred embodiment of the present invention, a limiting ring is fixedly connected inside the cooking tank, and a scraping rod is slidably connected to the lower part of the inner cavity of the cooking tank. The top of the scraping rod is in contact with the limiting ring, and the side wall of the scraping rod is in contact with the inner wall of the cooking tank. Both sides of the scraping rod are engaged with limiting sliders, and the two ends of the stirring rod are respectively fixed on the side walls of the two sets of limiting sliders.

[0009] As a preferred embodiment of the present invention, the air extraction assembly includes a piston box, which is fixedly connected to a mounting bracket. A piston magnetic plate is slidably connected inside the piston box. Two sets of rotating magnetic plates are symmetrically fixed on the outer wall of the shielding shell. The rotating magnetic plates are aligned with the piston magnetic plates and are magnetically engaged with each other. One end of the piston box away from the shielding shell is fixed and connected to an air extraction pipe. The other end of the air extraction pipe is connected to the top of the inner cavity of the boiling tank, and a one-way valve is installed on the air extraction pipe.

[0010] As a preferred embodiment of the present invention, the piston box is fixed and connected to an exhaust pipe at the end away from the shielding shell, and a one-way valve is installed on the exhaust pipe. The output end of the exhaust pipe is fixed and connected to a condenser pipe, which is designed in a horizontal spiral shape. The output end of the condenser pipe is fixed and connected to a tailpipe.

[0011] As a preferred embodiment of the present invention, the top of the cooking tank is fixedly connected to a reflux pipe, the output end of the reflux pipe is connected to the top of the inner cavity of the sealing box, the bottom of each spiral of the condenser tube is connected to the reflux pipe through a liquid guide pipe, the bottom of the inner cavity of the sealing box is fixedly connected to a drain pipe, and the other end of the drain pipe extends to the outside of the cooking tank.

[0012] As a preferred embodiment of the present invention, the pouring part includes a sealing rod, a discharge pipe is fixed and connected to the discharge pipe, the discharge pipe is designed to be inclined downwards, the sealing rod is slidably connected inside the discharge pipe, and an electric cylinder is fixedly connected to the bottom of the cooking tank, the telescopic end of the electric cylinder is fixedly connected to the bottom end of the sealing rod.

[0013] As a preferred embodiment of the present invention, a heating chamber is fixedly connected to the bottom of the cooking pot, a spiral electric heating tube is fixed inside the heating chamber, an electric heater is fixedly connected to the outer wall of the heating chamber, and the heating end of the electric heater is connected to the electric heating tube.

[0014] A method for preventing bumpy boiling and stirring when boiling raw brown sugar includes the following steps: Step 1: Pour the ingredients needed to make the original brown sugar into the boiling tank through the feed pipe; Step 2: Heat the raw materials while continuously stirring; Step 3: During the cooking process, continuously extract the gas from the cooking pot to create a negative pressure environment inside. Step 4: The extracted water vapor is condensed and reused.

[0015] Compared with the prior art, the present invention provides a stirring device and method for boiling brown sugar without bumping, which has the following beneficial effects: 1. This original brown sugar boiling anti-boiling stirring device automatically extracts gas from the tank through a magnetically driven piston assembly, maintaining a negative pressure environment, lowering the boiling point of the sugar solution, and achieving low-temperature boiling. This effectively protects the heat-sensitive nutrients and natural flavor in the sugar solution. Furthermore, the negative pressure state also exerts a traction effect on the bubbles, accelerating water evaporation and preventing boiling. In addition, with the spiral condenser tube, the centrifugal effect is used to achieve efficient gas-liquid separation and condensation, and the recovered condensate is used for equipment lubrication and heat insulation, realizing resource reuse and improving energy efficiency.

[0016] 2. This original brown sugar boiling anti-boiling stirring device uses a drive shaft to rotate the stirring rod. The upper and lower protrusions work together to cause the stirring rod to reciprocate axially while rotating, creating a three-dimensional stirring effect. This effectively eliminates temperature stratification of the syrup and eliminates stirring dead zones, resulting in more uniform heating and preventing localized scorching. Simultaneously, the stirring rod drives a scraper rod to rotate along the inner wall of the tank, continuously scraping away adhering syrup to prevent the formation of an insulating layer or caramelization. This significantly improves heat exchange efficiency, shortens boiling time, and ensures the stability of the brown sugar's color and flavor. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0018] Figure 1 This is a first-view perspective stereoscopic diagram of the present invention; Figure 2 This is a second-view perspective stereoscopic diagram of the present invention; Figure 3 This is a schematic diagram of the first cross-sectional structure of the boiling tank of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of region A in the middle; Figure 5 This is a schematic diagram of the second cross-sectional structure of the boiling tank of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram of region B in the middle; Figure 7 For the present invention Figure 5 Enlarged structural diagram of region C in the middle; Figure 8 This is a schematic diagram of the magnetic coupling structure of the present invention; Figure 9 This is a schematic diagram of the upper and lower protrusion structures of the present invention.

[0019] In the diagram: 1. Cooking tank; 2. Feed pipe; 21. Discharge pipe; 22. Discharge tube; 3. Drive shaft; 31. Limiting guide rod; 4. Mounting bracket; 41. Drive motor; 42. Shielding shell; 43. Inner magnetic block; 44. Driven ring; 45. Outer magnetic block; 5. Stirring shaft; 51. Sealing box; 52. Sleeve; 521. Limiting groove; 53. Lifting plate; 531. Upper protrusion; 54. Positioning ring; 541. 55. Lower protrusion; 56. Limiting ring; 57. Scraper rod; 58. Limiting slider; 59. Stirring rod; 60. Piston box; 61. Piston magnetic plate; 62. Rotating magnetic plate; 63. Suction pipe; 64. Exhaust pipe; 65. Condenser pipe; 66. Tail gas pipe; 67. Return pipe; 68. Liquid guide pipe; 69. Drain pipe; 70. Sealing rod; 71. Electric cylinder; 82. Heating chamber; 83. Electric heating tube; 84. Electric heater. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Reference Figures 1-9 A device for preventing boiling over in the boiling of brown sugar includes a boiling tank 1, with a feed pipe 2 fixed to and connected to the top of the boiling tank 1 and a sealing cap fixed to the top of the feed pipe 2. The bottom of the boiling tank 1 is fixed to and connected to a discharge pipe 21. The device also includes: a drive shaft 3 rotatably connected to the top of the boiling tank 1, wherein the top of the boiling tank 1 is provided with a drive unit for driving the drive shaft 3 to rotate, and a stirring unit for agitating the brown sugar during boiling is installed on the drive shaft 3; an air extraction component installed on the top of the boiling tank 1, used to maintain the boiling tank 1 under negative pressure during the boiling process; and a discharge section located at the bottom of the boiling tank 1, used to control the discharge pipe 21 to switch between opening and closing.

[0022] Reference Figures 1-9A heating chamber 8 is fixedly connected to the bottom of the cooking tank 1. A spiral-shaped electric heating tube 81 is fixed inside the heating chamber 8, and the heating chamber 8 contains a heating medium, which in this embodiment is heat-conducting oil. An electric heater 82 is fixedly connected to the outer wall of the heating chamber 8, and the heating end of the electric heater 82 is connected to the electric heating tube 81. The drive unit includes a mounting frame 4, which is fixedly connected to the top of the cooking tank 1. A drive motor 41 is fixedly connected to the mounting frame 4. A shielding shell 42 is fixedly connected to the output shaft of the drive motor 41. Multiple sets of inner magnetic blocks 43 are fixed at equal intervals on the inner wall of the shielding shell 42. The drive shaft 3... The top of the device extends into the shielding shell 42 and is fixedly connected to a driven ring 44. Multiple sets of outer magnetic blocks 45 are evenly spaced on the outer wall of the driven ring 44, and a non-contact magnetic coupling is formed between the outer magnetic blocks 45 and the inner magnetic blocks 43. That is, when the inner magnetic blocks 43 rotate with the driven ring 44, they can drive the outer magnetic blocks 45 to rotate together with the driven ring 44. The magnetic ring formed by the multiple sets of outer magnetic blocks 45 is sleeved on the outside of the magnetic ring formed by the multiple sets of inner magnetic blocks 43, and an air gap is formed between the two sets of magnetic rings. Torque is transmitted through the magnetic field, realizing the air-to-air transmission between the two sets of magnetic rings. The stirring part includes a stirring shaft 5. A sealing box 51 is fixedly connected to the top of the inner cavity of the can 1. A sleeve 52 is slidably sealed at the bottom of the sealing box 51. The sleeve 52 is slidably fitted onto the bottom end of the drive shaft 3. A stirring shaft 5 is fixedly connected to the bottom end of the sleeve 52. A stirring rod 58 is fixedly connected to the bottom end of the stirring shaft 5. A lifting plate 53 is fixedly connected to the top of the sleeve 52. Two sets of upper protrusions 531 are symmetrically fixed to the bottom of the lifting plate 53. A positioning ring 54 is fixedly connected to the inner wall of the sealing box 51. Two sets of lower protrusions 541 are symmetrically fixed to the bottom of the positioning ring 54. The upper protrusions 531 and the lower protrusions 541 are compatible with each other. The contact surfaces of the lower protrusion 541 are all inclined and smoothed. When the two sets of upper protrusions 531 and lower protrusions 541 are in synchronous contact, under the action of rotational torque, the upper protrusions 531 will rise along the lower protrusions 541, thereby causing the sleeve 52 to rise axially along the drive shaft 3. The sleeve 52 has limit grooves 521 on both sides of its inner cavity. The bottom ends of the drive shaft 3 are fixedly connected to limit guide rods 31. The two sets of limit guide rods 31 are inserted into the limit grooves 521 on both sides. That is, the sleeve 52 can rotate with the drive shaft 3 and slide axially along the drive shaft 3.

[0023] With the above-described structure, the drive motor 41 is activated, causing the shielding shell 42 and the inner magnetic block 43 to rotate. Utilizing the non-contact magnetic coupling between the outer magnetic block 45 and the inner magnetic block 43, the outer magnetic block 45 and the driven ring 44 rotate. This causes the stirring shaft 5 to rotate the sleeve 52 and the stirring rod 58 within the cooking tank 1, agitating the syrup inside, enhancing heat conduction, and achieving uniform heating. Simultaneously, the uniform stirring causes the syrup to continuously tumble, bringing the moist syrup to the surface, increasing the effective surface area for water evaporation, and significantly improving cooking efficiency. Furthermore, the shearing action generated by the rotating stirring rod 58 breaks up bubbles generated during brown sugar cooking, preventing violent boiling and thus improving the quality of the brown sugar. Additionally, when the sleeve 52 rotates, it works in conjunction with the protrusion 5... The arrangement of the upper protrusion 531 and the lower protrusion 541 allows the upper protrusion 531 to rise along the lower protrusion 541 under the action of rotational torque when it contacts the lower protrusion 541. This causes the sleeve 52 to rise axially along the drive shaft 3. After the upper protrusion 531 passes the lower protrusion 541, the sleeve 52 will descend axially along the drive shaft 3 under the action of gravity. This causes the stirring rod 58 to continuously rise and fall in the cooking tank 1, thereby generating a certain fluid guiding effect in the vertical direction of the syrup. This can quickly eliminate the temperature difference in the tank, achieve a more comprehensive and uniform stirring effect, effectively eliminate the dead corners of syrup stirring, further improve the quality of brown sugar cooking, and the alternating shearing force can more effectively destroy the stability of foam, prevent boiling over, and make water evaporation more stable and controllable.

[0024] Reference Figure 3 , Figure 5 and Figure 7 A limiting ring 55 is fixedly connected inside the cooking tank 1. A scraper rod 56 is slidably connected to the lower part of the inner cavity of the cooking tank 1. The top of the scraper rod 56 is in contact with the limiting ring 55, and the side wall of the scraper rod 56 is in contact with the inner wall of the cooking tank 1. Both sides of the scraper rod 56 are engaged with limiting sliders 57. The two ends of the stirring rod 58 are respectively fixed to the side walls of the two sets of limiting sliders 57. That is, when the sleeve 52 is raised and lowered, it drives the stirring rod 58 to slide up and down along the side wall of the scraper rod 56. The inner wall of the cooking tank 1, the limiting ring 55, the scraper rod 56, the stirring rod 58, the stirring shaft 5, the sleeve 52, the sealing box 51, and the drive shaft 3 together form a mutually limiting and restrictive motion system. That is, the stirring rod 58 can drive the scraper rod 56 to rotate along the inner wall of the cooking tank 1, but cannot drive the scraper rod 56 to rise and fall together. In this way, while satisfying the stirring rod 58 to rise and fall and stir, it also ensures that the scraper rod 56 always rotates around the inner wall of the cooking tank 1, effectively avoiding the "sticking" phenomenon.

[0025] With the above-described structure, when the stirring rod 58 rotates, it also drives the scraper rod 56 to rotate around the inner wall of the cooking tank 1. At this time, the scraper rod 56 acts like a "scraper," continuously scraping off the syrup adhering to the inner wall of the cooking tank 1, allowing it to return to the main body of syrup in the cooking tank 1. This prevents the syrup from adhering to the cooking tank 1 and forming a "heat insulation layer," which could lead to rapid heating and caramelization. This effectively prevents scorching, thereby improving the cooking quality. Furthermore, in conjunction with the stirring of the stirring rod 58, it further improves the heat exchange efficiency, shortens the cooking time, and reduces energy consumption.

[0026] Reference Figure 1 , Figure 5 , Figure 6 and Figure 8 The extraction assembly includes a piston box 6, which is fixedly connected to the mounting bracket 4. A piston magnetic plate 61 is slidably connected inside the piston box 6. Two sets of rotating magnetic plates 62 are symmetrically fixed on the outer wall of the shielding shell 42. The rotating magnetic plates 62 are aligned with the piston magnetic plates 61, and the piston magnetic plates 61 and rotating magnetic plates 62 are magnetically engaged, that is, one set of rotating magnetic plates 62 and piston magnetic plates 61 are magnetically attracted, and the other set of rotating magnetic plates 62 and piston magnetic plates 61 are magnetically repelled. One end of the piston box 6 away from the shielding shell 42 is fixed and connected to an extraction pipe 63. The other end of the extraction pipe 63 is connected to the top of the inner cavity of the boiling tank 1, and a one-way valve is installed on the extraction pipe 63. One end of the piston box 6 away from the shielding shell 42 is fixed and connected to an exhaust pipe 64, and a one-way valve is installed on the exhaust pipe 64. The output end of the exhaust pipe 64 is fixed and connected to a condenser pipe 65. The condenser tube 65 is designed in a horizontal spiral shape. The spiral design of the condenser tube 65 can generate a spiral acceleration effect on the discharged water vapor to achieve gas-liquid separation. At the same time, the total length of the condenser tube 65 is extended to increase the residence time of the steam and achieve better condensation. The output end of the condenser tube 65 is fixed and connected to the tail gas pipe 66. The output end of the tail gas pipe 66 is connected to the existing tail gas treatment equipment. The top of the boiling tank 1 is fixedly connected to the return pipe 67. The output end of the return pipe 67 is connected to the top of the inner cavity of the sealing box 51. The bottom of each spiral of the condenser tube 65 is connected to the return pipe 67 through the liquid guide pipe 68. The bottom of the inner cavity of the sealing box 51 is fixed and connected to the drain pipe 69. The other end of the drain pipe 69 extends to the outside of the boiling tank 1. The output end of the drain pipe 69 is fixed with a sealing cap. The drain pipe 69 is used to periodically drain the condensate in the sealing box 51.

[0027] It should be noted that the one-way valve in the extraction pipe 63 can only allow the gas at the top of the inner cavity of the boiling tank 1 to enter the piston box 6; the one-way valve in the exhaust pipe 64 can only allow the gas in the piston box 6 to enter the condenser pipe 65.

[0028] With the above structure, during the rotation of the shielding shell 42, the magnetic cooperation between the piston magnetic plate 61 and the rotating magnetic plate 62 is utilized. When the rotating magnetic plate 62, which has a magnetic repulsive force with the piston magnetic plate 61, rotates to the piston magnetic plate 61, it will push the piston magnetic plate 61 to slide towards the other end of the piston box 6 under the action of magnetic repulsion. This will compress the gas in the piston box 6 and open the one-way valve in the exhaust pipe 64, allowing the gas in the piston box 6 to be discharged along the exhaust pipe 64, condenser pipe 65 and tail gas pipe 66. Subsequently, when the rotating magnetic plate 62, which has a magnetic attraction force with the piston magnetic plate 61, rotates to the piston magnetic plate 61, it will pull the piston magnetic plate 61 to slide towards the side closer to the shielding shell 42 under the action of magnetic attraction. This will generate a negative pressure attraction force in the piston box 6 and open the one-way valve in the suction pipe 63, allowing the gas at the top of the inner cavity of the boiling tank 1 (the water vapor generated during boiling and evaporation and the original gas in the tank) to be drawn into the piston box 6. This process, repeated over and over, firstly reduces the pressure inside the boiling tank 1, avoiding the high-pressure risks associated with sealed boiling. Simultaneously, it maintains a negative pressure state inside the boiling tank 1, thereby lowering the boiling point of the sugar syrup and achieving low-temperature boiling. This maximizes the protection of the natural nutrients and active substances in the sugar syrup from high-temperature destruction, thus improving the quality of the brown sugar. Secondly, because the upper part of the inner cavity of the boiling tank 1 is under negative pressure, it pulls on the evaporating bubbles in the syrup, causing them to escape more quickly. This ensures a continuous and efficient evaporation process, significantly shortening the boiling time and preventing a sudden, violent explosion (i.e., bumping) after a large number of bubbles accumulate inside the syrup. Furthermore, when the water vapor extracted from the boiling tank 1 is compressed and pushed to the horizontally spiral-designed condenser tube 65, a spiral acceleration centrifugal force is generated, at which point the water vapor... Heavy droplets are thrown against the wall of the condenser tube 65 and rapidly exchange heat with the outside air, thus condensing and liquefying, and separating the gas and liquid. At this time, the gas part continues to be output to the exhaust gas treatment equipment along the exhaust pipe 66, achieving the environmental protection effect. The liquid part, in the gap when the gas thrust disappears, enters the return pipe 67 along the liquid guide pipe 68 under the action of gravity, and then enters the sealing box 51. At this time, water insulation is generated in the sealing box 51 to prevent heat from being transferred upward along the sleeve 52 and the stirring shaft 5. Combined with the air-sealed transfer of magnetic coupling, it effectively protects the drive motor 41 and improves the service life of the drive motor 41. At the same time, it can lubricate and cool the upper protrusion 531 and the lower protrusion 541, ensuring the smooth lifting and lowering of the stirring rod 58 and improving the durability of the upper protrusion 531 and the lower protrusion 541.

[0029] In addition, when the piston magnetic plate 61 slides back and forth in the piston box 6, a gas extraction effect will also be generated in the cavity of the piston box 6 near the shield shell 42, thereby accelerating the heat exchange speed of the airflow around the piston box 6, that is, at the condenser tube 65, and achieving a better condensation effect.

[0030] Reference Figure 2 , Figure 3 and Figure 5 The discharging section includes a sealing rod 7, and a discharge pipe 22 is fixed to and connected to the discharge pipe 21. The discharge pipe 22 is designed to be inclined downwards. The sealing rod 7 is slidably connected inside the discharge pipe 21. An electric cylinder 71 is fixedly connected to the bottom of the cooking tank 1. The telescopic end of the electric cylinder 71 is fixedly connected to the bottom end of the sealing rod 7. When the electric cylinder 71 is in the retracted state, the sealing rod 7 blocks the connection between the discharge pipe 21 and the discharge pipe 22, and the top of the sealing rod 7 extends to the bottom of the inner cavity of the cooking tank 1, effectively preventing some raw materials from entering the discharge pipe 21 and not being uniformly heated and stirred, thus ensuring the quality of brown sugar cooking. When the electric cylinder 71 is in the extended state, the sealing rod 7 releases the blockage of the connection between the discharge pipe 21 and the discharge pipe 22. At this time, the material is discharged by its own weight, which improves the convenience of discharging.

[0031] Example 2: Reference Figures 1-9 Similar to Example 1, but based on Example 1, a method for preventing bumpy boiling and stirring during the boiling of original brown sugar is proposed, including the following steps: Step 1: Pour the raw materials needed to make the original brown sugar into the boiling tank 1 through the feed pipe 2; Step 2: Heat the raw materials while continuously stirring; Step 3: During the cooking process, continuously extract the gas from the cooking tank 1 to create a negative pressure environment inside it; Step 4: The extracted water vapor is condensed and reused.

[0032] Reference Figures 1-9 In this invention, when in use, the raw materials for making brown sugar are first poured into the cooking tank 1 through the feed pipe 2. Then, the feed pipe 2 is sealed so that the cooking tank 1 is in a sealed state. Then, the heat-conducting medium in the heating chamber 8 is heated by the electric heater 82 in conjunction with the electric heating tube 81 so that the temperature of the heat-conducting medium reaches the temperature required for making brown sugar.

[0033] Simultaneously, the drive motor 41 is turned on, causing the shielding shell 42 and the inner magnetic block 43 to rotate. Utilizing the non-contact magnetic coupling between the outer magnetic block 45 and the inner magnetic block 43, the outer magnetic block 45 and the driven ring 44 rotate. This, in turn, causes the stirring shaft 5 to rotate the sleeve 52 and the stirring rod 58 within the cooking tank 1, agitating the syrup inside, enhancing heat conduction, and achieving uniform heating. Simultaneously, the uniform stirring causes the syrup to continuously tumble, bringing the moist syrup from the inside to the surface, increasing the effective surface area for water evaporation. This significantly improves the cooking efficiency, and the shearing action generated by the rotation of the stirring rod 58 breaks up the bubbles produced during the brown sugar cooking process, preventing violent boiling and thus improving the quality of the brown sugar. Furthermore, when the sleeve 52 rotates, the upper protrusion 531 and the lower protrusion 541 work together. When the upper protrusion 531 contacts the lower protrusion 541, under the action of rotational torque, the upper protrusion 531 will rise along the lower protrusion 541, causing the sleeve 52 to rise axially along the drive shaft 3. When the upper protrusion 531 passes the lower protrusion 541... After block 541, under the action of gravity, sleeve 52 will descend axially along drive shaft 3, causing stirring rod 58 to continuously rise and fall in boiling tank 1. This creates a certain fluid guiding effect along the vertical direction of the syrup, which can quickly eliminate temperature differences in the tank, achieve a more comprehensive and uniform stirring effect, effectively eliminate dead zones in the stirring of the syrup, further improve the quality of brown sugar boiling, and the alternating shearing force can more effectively destroy the stability of foam, prevent boiling over, and make water evaporation more stable and controllable; in addition, during stirring... When the stirring rod 58 rotates, it also drives the scraper rod 56 to rotate around the inner wall of the cooking tank 1. At this time, the scraper rod 56 acts like a "scraper", constantly scraping the syrup adhering to the inner wall of the cooking tank 1 and returning it to the main body of syrup in the cooking tank 1. This prevents the syrup from adhering to the cooking tank 1 and forming a "heat insulation layer", which would cause rapid heating and caramelization. This effectively prevents scorching and improves the cooking quality. In addition, the stirring rod 58 further improves the heat exchange efficiency, shortens the cooking time, and reduces energy consumption.

[0034] During the rotation of the shielding shell 42, the magnetic interaction between the piston magnetic plate 61 and the rotating magnetic plate 62 is utilized. When the rotating magnetic plate 62, which has a magnetic repulsive force with the piston magnetic plate 61, rotates to the position of the piston magnetic plate 61, it will push the piston magnetic plate 61 to slide towards the other end of the piston box 6 under the action of the magnetic repulsive force. This will compress the gas in the piston box 6 and open the one-way valve in the exhaust pipe 64, allowing the gas in the piston box 6 to be discharged through the exhaust pipe 64, the condenser pipe 65, and the tail gas pipe 66. Subsequently, when the rotating magnetic plate 62, which has a magnetic attraction force with the piston magnetic plate 61, rotates to the position of the piston magnetic plate 61, it will pull the piston magnetic plate 61 to slide towards the side closer to the shielding shell 42 under the action of the magnetic attraction force. This will generate a negative pressure attraction force in the piston box 6 and open the one-way valve in the suction pipe 63, allowing the gas at the top of the inner cavity of the boiling tank 1 to be drawn into the piston box 6. This process, repeated over and over, firstly reduces the air pressure inside the boiling tank 1, avoiding the high-pressure risks associated with sealed boiling. Simultaneously, it maintains a negative pressure state inside the boiling tank 1, thereby lowering the boiling point of the sugar syrup and achieving low-temperature boiling. This maximizes the protection of the natural nutrients and active substances in the sugar syrup from high-temperature destruction, thus improving the quality of the brown sugar. Secondly, because the upper part of the inner cavity of the boiling tank 1 is under negative pressure, it exerts a pulling effect on the evaporating bubbles in the syrup, causing them to exit the syrup more quickly. This ensures a continuous and efficient evaporation process, significantly shortening the boiling time and preventing a sudden, violent explosion of bubbles that accumulate inside the syrup. Furthermore, when the water vapor extracted from the boiling tank 1 is compressed and pushed to the horizontally spiral-designed condenser tube 65, a spiral acceleration centrifugal force is generated. At this time, the heavier liquid in the water vapor... The droplets are thrown onto the wall of the condenser tube 65 and rapidly exchange heat with the outside air, thus condensing and liquefying, and separating the gas and liquid. At this time, the gas part continues to be output to the exhaust gas treatment equipment along the exhaust pipe 66, achieving the environmental protection effect. The liquid part, in the gap when the gas thrust disappears, enters the return pipe 67 along the liquid guide pipe 68 under the action of gravity, and then enters the sealing box 51. At this time, water insulation is generated in the sealing box 51 to prevent heat from being transferred upward along the sleeve 52 and the stirring shaft 5. Combined with the air-locked transfer of magnetic coupling, it effectively protects the drive motor 41 and improves the service life of the drive motor 41. At the same time, it can lubricate and cool the upper protrusion 531 and the lower protrusion 541, ensuring the smooth lifting and lowering of the stirring rod 58 and improving the durability of the upper protrusion 531 and the lower protrusion 541.

[0035] Finally, when the brown sugar is cooked, the electric cylinder 71 extends and pushes the sealing rod 7 to release the blockage of the connection between the discharge pipe 21 and the discharge pipe 22. At this time, the brown sugar is discharged by its own weight, and with the continued rotation of the scraper rod 56, all the finished product attached to the inner wall of the cooking tank 1 is scraped off and discharged, reducing the adhesion loss and reducing the difficulty of cleaning the cooking tank 1 in the future.

[0036] Components not described in detail in this article are existing technologies.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for preventing bumping during the boiling of raw brown sugar, comprising a boiling tank (1), characterized in that, The top of the cooking tank (1) is fixed and connected to a feed pipe (2), and the bottom of the cooking tank (1) is fixed and connected to a discharge pipe (21). It also includes: A drive shaft (3) is rotatably connected to the top of the boiling tank (1). The top of the cooking pot (1) is provided with a driving part for driving the driving shaft (3) to rotate, and the driving shaft (3) is equipped with a stirring part for stirring the brown sugar during cooking. A vacuum assembly is installed on top of the cooking tank (1). The vacuum assembly is used to maintain the cooking tank (1) under negative pressure during the cooking process. The material pouring section is located at the bottom of the cooking tank (1) and is used to control the material discharge pipe (21) to switch between opening and closing.

2. The anti-boiling stirring device for boiling raw brown sugar according to claim 1, characterized in that, The drive unit includes a mounting bracket (4), which is fixedly connected to the top of the cooking tank (1). A drive motor (41) is fixedly connected to the mounting bracket (4). A shielding shell (42) is fixedly connected to the output shaft of the drive motor (41). Multiple sets of inner magnetic blocks (43) are fixed at equal intervals on the inner wall of the shielding shell (42). The top end of the drive shaft (3) passes through the shielding shell (42) and is fixedly connected to a driven ring (44). Multiple sets of outer magnetic blocks (45) are fixed at equal intervals on the outer wall of the driven ring (44). The outer magnetic blocks (45) and the inner magnetic blocks (43) form a non-contact magnetic coupling. That is, when the inner magnetic blocks (43) rotate with the driven ring (44), the outer magnetic blocks (45) and the driven ring (44) can rotate together.

3. The anti-boiling stirring device for boiling raw brown sugar according to claim 2, characterized in that, The stirring unit includes a stirring shaft (5). A sealing box (51) is fixedly connected to the top of the inner cavity of the cooking tank (1). A sleeve (52) is slidably sealed at the bottom of the sealing box (51). The sleeve (52) is slidably fitted onto the bottom end of the drive shaft (3). The stirring shaft (5) is fixedly connected to the bottom end of the sleeve (52). A stirring rod (58) is fixedly connected to the bottom end of the stirring shaft (5). A lifting plate (53) is fixedly connected to the top end of the sleeve (52). Two sets of upper protrusions (531) are symmetrically fixed to the bottom of the lifting plate (53). A positioning ring (54) is fixedly connected to the inner wall of the sealing box (51). Two sets of lower protrusions (541) are symmetrically fixed to the bottom of the positioning ring (54). The upper protrusions (531) and the lower protrusions (541) are compatible with each other. The sleeve (52) has a limit groove (521) on both sides of its inner cavity, and the bottom of the drive shaft (3) is fixedly connected to the limit guide rod (31) on both sides. The two sets of limit guide rods (31) are inserted into the limit grooves (521) on both sides.

4. The anti-boiling stirring device for boiling raw brown sugar according to claim 3, characterized in that, The cooking pot (1) is fixedly connected to a limiting ring (55). A scraping rod (56) is slidably connected to the lower part of the inner cavity of the cooking pot (1). The top of the scraping rod (56) is in contact with the limiting ring (55). The side wall of the scraping rod (56) is in contact with the inner wall of the cooking pot (1). Both sides of the scraping rod (56) are engaged with limiting sliders (57). The two ends of the stirring rod (58) are respectively fixed on the side walls of the two sets of limiting sliders (57).

5. The anti-boiling and stirring device for boiling raw brown sugar according to claim 3, characterized in that, The air extraction assembly includes a piston box (6), which is fixedly connected to the mounting bracket (4). A piston magnetic plate (61) is slidably connected inside the piston box (6). Two sets of rotating magnetic plates (62) are symmetrically fixed on the outer wall of the shielding shell (42). The rotating magnetic plates (62) are aligned with the piston magnetic plates (61) and are magnetically engaged with each other. One end of the piston box (6) away from the shielding shell (42) is fixed and connected to an air extraction pipe (63). The other end of the air extraction pipe (63) is connected to the top of the inner cavity of the boiling tank (1). A one-way valve is installed on the air extraction pipe (63).

6. The anti-boiling stirring device for boiling raw brown sugar according to claim 5, characterized in that, The piston box (6) is fixed at one end away from the shield shell (42) and connected to an exhaust pipe (64). A one-way valve is installed on the exhaust pipe (64). The output end of the exhaust pipe (64) is fixed and connected to a condenser pipe (65). The condenser pipe (65) is designed in a horizontal spiral shape. The output end of the condenser pipe (65) is fixed and connected to a tailpipe (66).

7. The anti-boiling stirring device for boiling raw brown sugar according to claim 6, characterized in that, The top of the cooking tank (1) is fixedly connected to a return pipe (67), the output end of the return pipe (67) is connected to the top of the inner cavity of the sealing box (51), the bottom of each spiral of the condenser (65) is connected to the return pipe (67) through a liquid guide pipe (68), the bottom of the inner cavity of the sealing box (51) is fixed and connected to a drain pipe (69), and the other end of the drain pipe (69) extends to the outside of the cooking tank (1).

8. The anti-boiling stirring device for boiling raw brown sugar according to claim 1, characterized in that, The material pouring section includes a sealing rod (7), and a discharge pipe (22) is fixed and connected to the discharge pipe (21). The discharge pipe (22) is designed to be inclined downwards. The sealing rod (7) is slidably connected inside the discharge pipe (21). An electric cylinder (71) is fixedly connected to the bottom of the cooking tank (1). The telescopic end of the electric cylinder (71) is fixedly connected to the bottom end of the sealing rod (7).

9. The anti-boiling stirring device for boiling raw brown sugar according to claim 1, characterized in that, The bottom of the cooking pot (1) is fixedly connected to a heating chamber (8), and a spiral electric heating tube (81) is fixed inside the heating chamber (8). An electric heater (82) is fixedly connected to the outer wall of the heating chamber (8), and the heating end of the electric heater (82) is connected to the electric heating tube (81).

10. A method for preventing bumping during the boiling of raw brown sugar, comprising the stirring device for preventing bumping during the boiling of raw brown sugar as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Pour the raw materials needed to make the original brown sugar into the boiling tank (1) through the feed pipe (2); Step 2: Heat the raw materials while continuously stirring; Step 3: During the cooking process, continuously extract the gas from the cooking tank (1) to create a negative pressure environment inside it; Step 4: The extracted water vapor is condensed and reused.

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