A low-temperature vacuum drying autoclave for preparing high-purity fish oil

Abstract

This application relates to the field of fish oil refining and extraction equipment, and in particular to a low-temperature vacuum drying vessel for preparing high-purity fish oil. The vessel includes a decolorizing vessel body, with a drive motor mounted on the top. A stirring shaft and a stirring wheel are located within the decolorizing vessel body, and the drive motor is connected to the stirring shaft. A rotating shaft is also added within the decolorizing vessel body, connected to the stirring shaft. Heating boxes and cooling boxes are respectively installed on the left and right sides of the top of the decolorizing vessel body. During rotation, the rotating shaft controls the heating boxes or cooling boxes to adjust the temperature within the decolorizing vessel body. The purpose of this application is to ensure coordinated temperature adjustment and stirring during the fish oil decolorization process. Simultaneous temperature adjustment and stirring helps ensure accurate temperature control, thereby effectively ensuring the decolorization effect of the fish oil.

Description

Technical Field

[0001] This application relates to the field of fish oil refining and extraction equipment, and in particular to a low-temperature vacuum drying vessel for the preparation of high-purity fish oil. Background Technology

[0002] Fish oil decolorization is a crucial step in the fish oil refining process. Its main purpose is to improve the quality of fish oil by adsorbing and removing some residual impurities such as proteins, colloids, mucus, oxidation products, and soap particles. The decolorization reactor is the core reaction equipment for this process, ensuring that the fish oil and the decolorizing agent (commonly bleaching clay or activated carbon, or a mixture of both) come into full contact under specific temperature and vacuum conditions to complete the adsorption reaction.

[0003] In related technologies, the specific temperature inside the decolorization kettle during fish oil decolorization needs to be determined based on the oil quality and the characteristics of the adsorbent, and is usually within the range of 60-100℃. This means that when decolorizing fish oil of different qualities, the temperature inside the kettle needs to be adjusted adaptively according to the different oils.

[0004] When adjusting the temperature in a decolorizing kettle, the stirring device inside the kettle must always be kept running and must never be stopped. Temperature adjustment and stirring are synergistic and indispensable. Stirring allows heat to be quickly transferred and dispersed within the kettle, preventing "localized overheating" or "high temperature near the jacket and low temperature at the center," thus ensuring accurate temperature control. If stirring is stopped during the temperature adjustment process in the decolorizing kettle, solids will quickly settle and clump together, resulting in insufficient contact between the decolorizing agent and the material, significantly reducing the decolorizing effect.

[0005] Therefore, ensuring that the decolorization kettle and the stirring device operate synchronously during the temperature adjustment process is crucial to ensuring the normal progress of the decolorization reaction. Summary of the Invention

[0006] This application provides a low-temperature vacuum drying vessel for preparing high-purity fish oil. The purpose is to ensure that during the fish oil decolorization process, when temperature adjustment is required within the decolorization vessel, the normal operation of the stirring device is not affected, and that the two key steps of temperature adjustment and stirring are carried out synchronously. This facilitates the coordinated operation of temperature adjustment and stirring. Simultaneous stirring during temperature adjustment helps ensure the accuracy of temperature control, thereby effectively ensuring the decolorization effect of the fish oil.

[0007] This application provides a low-temperature vacuum drying vessel for preparing high-purity fish oil, employing the following technical solution: A low-temperature vacuum drying vessel for preparing high-purity fish oil includes a decolorizing vessel body. A drive motor is fixed to the top of the decolorizing vessel body. A stirring shaft and a stirring wheel are provided inside the decolorizing vessel body. The drive motor is connected to the stirring shaft. A rotating shaft is also provided inside the decolorizing vessel body. The rotating shaft is connected to the stirring shaft. A heating box and a cooling box are respectively installed on the left and right sides of the top of the decolorizing vessel body. During the rotation of the rotating shaft, the heating box or the cooling box controls the temperature adjustment treatment inside the decolorizing vessel body.

[0008] By adopting the above technical solution, this setup requires the rotation of the rotating shaft to perform temperature control within the decolorization kettle via a heating or cooling box. The heating or cooling box performs temperature control during the rotation of the rotating shaft. Since the rotation of the rotating shaft is driven by the rotation of the stirring shaft, when temperature control is needed within the decolorization kettle, the heating or cooling box controls the temperature control within the kettle while the stirring shaft is rotating. This tightly links the rotation of the stirring shaft with the temperature control within the decolorization kettle, effectively ensuring that when temperature control is required during fish oil decolorization, it does not affect the normal operation of the stirring device. It also ensures that the two key steps of temperature control and stirring are performed synchronously, thus facilitating coordinated operation between them. Simultaneous stirring during temperature control helps ensure precise temperature control, thereby effectively guaranteeing the decolorization effect of the fish oil.

[0009] Preferably, a snap-fit ​​plate is integrally formed on the periphery of one end of the stirring shaft near the rotating shaft, and a snap-fit ​​groove is formed on the bottom of one end of the rotating shaft near the stirring shaft, and the snap-fit ​​plate snaps into the corresponding snap-fit ​​groove.

[0010] By adopting the above technical solution, the stirring shaft and the rotating shaft are connected by a snap-fit ​​plate and a snap-fit ​​groove, thereby enabling the stirring shaft to drive the rotating shaft to stir synchronously during rotation. Setting the stirring shaft and rotating shaft to a snap-fit ​​connection method facilitates the installation, removal, and replacement of the stirring shaft and rotating shaft, making them more convenient.

[0011] Preferably, the rotating shaft is integrally connected to a drive gear along its circumference, and a first bevel gear and a second bevel gear are respectively meshed and connected to the left and right sides of the drive gear. The first bevel gear is connected to the heating box, and the second bevel gear is connected to the cooling box. The first bevel gear is used to control the heating box to heat up the body of the decolorizing kettle, and the second bevel gear is used to control the cooling box to cool down the body of the decolorizing kettle.

[0012] By adopting the above technical solution, during the rotation of the first bevel gear, the heating box is controlled to inject hot air into the decolorizing kettle body to achieve the heating of the decolorizing kettle body; during the rotation of the second bevel gear, the cooling box is controlled to inject cold air into the decolorizing kettle body to achieve the cooling of the decolorizing kettle body.

[0013] Preferably, both the first bevel gear and the second bevel gear are located above the driving gear, and both the first bevel gear and the second bevel gear are slidably arranged in the vertical direction.

[0014] By adopting the above technical solution, in the initial state, when no temperature adjustment is required during the fish oil decolorization process, both the first and second bevel gears are located above the driving gear. At this time, neither the first nor the second bevel gears mesh with the driving gear. In this state, the drive motor drives the stirring shaft to rotate within the decolorization kettle body, and only the stirring step occurs within the decolorization kettle body; no temperature adjustment is performed.

[0015] When the decolorizing kettle body needs to be heated, the first bevel gear slides towards the drive gear until it meshes with the drive gear, while the second bevel gear remains stationary above the drive gear. In this state, when the stirring shaft drives the rotating shaft to rotate, the drive gear and the first bevel gear mesh, thereby controlling the heating box to inject hot gas into the decolorizing kettle body to complete the heating process inside the decolorizing kettle body.

[0016] When cooling is required inside the decolorizing reactor, the first bevel gear remains stationary, still positioned above the drive gear. The second bevel gear is slid closer to the drive gear until they mesh. In this state, when the stirring shaft drives the rotating shaft to rotate, the drive gear and the second bevel gear mesh, thereby controlling the cooling box to inject cold air into the decolorizing reactor to complete the cooling process inside the reactor.

[0017] Preferably, the ends of the first bevel gear and the second bevel gear that are far apart from each other are integrally connected with a rotating rod in the horizontal direction. A rotating cam is integrally fitted around the periphery of the rotating rod. A vent plate is installed inside the heating box and the cooling box. A lifting rod is added between the vent plate and the corresponding rotating cam. One end of the lifting rod is connected to the vent plate, and the other end of the lifting rod is connected to the rotating cam.

[0018] By adopting the above technical solution, when the decolorizing kettle body needs to be heated, the first bevel gear drives the corresponding rotating rod and rotating cam to rotate. As the rotating cam rotates, it drives the corresponding lifting rod to rise and fall vertically. While the lifting rod is rising and falling, it simultaneously drives the vent plate to slide up and down within the heating box. As the vent plate slides within the heating box, when the vent plate slides down out of the heating box, the heating box is in the open state. At this time, the hot air inside the heating box is injected into the decolorizing kettle body to raise the temperature. When cooling is required inside the decolorizing autoclave, the second bevel gear drives the corresponding rotating rod and rotating cam to rotate. As the rotating cam rotates, it drives the corresponding lifting rod to rise and fall vertically. Simultaneously, the lifting rod drives the vent plate to slide up and down within the cooling box. As the vent plate slides within the cooling box, it opens when it slides out of the cooling box, allowing hot air from the heating box to be injected into the decolorizing autoclave for heating.

[0019] The vent plate is installed in a lifting and sliding manner using a rotating cam. When the vent plate slides down out of the heating or cooling box, it heats or cools the body of the decolorizing kettle. When the vent plate slides up into the heating or cooling box, the heating or cooling box is closed, and no heating or cooling is performed on the body of the decolorizing kettle.

[0020] This makes the temperature control process inside the decolorizing kettle intermittent and buffered by the heating or cooling box, which can effectively avoid the problem of sudden temperature changes inside the decolorizing kettle and help ensure the stability of the temperature control process inside the decolorizing kettle.

[0021] Preferably, a return spring is integrally connected to the top of the ventilated plate along the vertical direction.

[0022] By adopting the above technical solution, the air vent plate can be raised and lowered and slid in the vertical direction by using a rotating cam and a return spring.

[0023] Preferably, a sealing box is integrally connected to the outer side of the decolorizing kettle body. A lifting rack is installed vertically inside the sealing box. A support block is integrally connected to the top of the lifting rack. A rotating groove is provided on the support block. The end of the rotating rod passes through the decolorizing kettle body and is inserted into the rotating groove. A drive gear is provided inside the sealing box. The drive gear and the lifting rack are meshed. A knob is installed outside the sealing box. The knob and the drive gear are connected through a corresponding rotating shaft.

[0024] By adopting the above technical solution, specifically, when the rotating rod needs to be raised or lowered, the corresponding knob is rotated, which drives the drive gear and the lifting rack to mesh. The drive gear drives the lifting rack to rise or fall within the sealed box, which in turn drives the corresponding rotating rod to slide up or down. The rotating rod then drives the corresponding first bevel gear or second bevel gear to rise or fall.

[0025] Preferably, an auxiliary roller is sleeved around the periphery of the lifting rod, and the bottom of the auxiliary roller is connected to the top of the rotating cam.

[0026] By adopting the above technical solution, the connection between the rotating cam and the lifting rod is transitioned by the auxiliary roller, which makes the rotating cam smoother in the process of driving the lifting rod to move up and down in the vertical direction, and helps to improve the stability of the lifting rod sliding in the vertical direction.

[0027] Preferably, the breathable plate is in the shape of a right triangle, and the top of the breathable plate is inclined.

[0028] By adopting the above technical solution, the vent plate is designed as a right-angled triangle. As the vent plate gradually slides downwards out of the heating or cooling box, the opening between the vent plate and the heating or cooling box gradually increases. The greater the distance the vent plate slides out of the heating or cooling box, the larger the opening of the heating or cooling box becomes. This ensures that the process of injecting gas into the decolorizing reactor from the heating or cooling box gradually increases, thereby further avoiding the problem of sudden temperature changes within the decolorizing reactor and helping to ensure the stability of the temperature control process within the decolorizing reactor.

[0029] In summary, this application includes at least one of the following beneficial technical effects: 1. This setup requires the rotation of the rotating shaft to regulate the temperature within the decolorizing kettle via a heating or cooling box. The heating or cooling box regulates the temperature of the kettle during the rotation of the shaft. Since the rotation of the rotating shaft is driven by the rotation of the stirring shaft, when temperature regulation is needed within the decolorizing kettle, the heating or cooling box regulates the temperature while the stirring shaft is rotating. This tightly links the rotation of the stirring shaft with the temperature regulation within the decolorizing kettle, effectively ensuring that when temperature regulation is required during fish oil decolorization, it does not affect the normal operation of the stirring device. It also ensures that the two key steps of temperature regulation and stirring are performed synchronously, facilitating coordinated operation between them. Simultaneous stirring during temperature regulation helps ensure accurate temperature control, thus effectively guaranteeing the decolorization effect of the fish oil. 2. In the initial state, when no temperature adjustment is required during the fish oil decolorization process, both the first and second bevel gears are located above the driving gear. At this time, neither the first nor the second bevel gears mesh with the driving gear. In this state, the drive motor drives the stirring shaft to rotate within the decolorization kettle body, and only the stirring step takes place within the decolorization kettle body; no temperature adjustment is performed.

[0030] When the decolorizing kettle body needs to be heated, the first bevel gear slides towards the drive gear until it meshes with the drive gear, while the second bevel gear remains stationary above the drive gear. In this state, when the stirring shaft drives the rotating shaft to rotate, the drive gear and the first bevel gear mesh, thereby controlling the heating box to inject hot gas into the decolorizing kettle body to complete the heating process inside the decolorizing kettle body.

[0031] When cooling is required inside the decolorizing reactor, the first bevel gear remains stationary, still positioned above the drive gear. The second bevel gear is slid closer to the drive gear until they mesh. In this state, when the stirring shaft drives the rotating shaft to rotate, the drive gear and the second bevel gear mesh, thereby controlling the cooling box to inject cold air into the decolorizing reactor to complete the cooling process inside the reactor. 3. The vent plate is designed as a right-angled triangle. As the vent plate slides downwards out of the heating or cooling box, the opening between the vent plate and the heating or cooling box gradually increases. The greater the distance the vent plate slides out of the heating or cooling box, the larger the opening of the heating or cooling box becomes. This ensures that the gas injection process from the heating or cooling box into the decolorization reactor is gradual, further preventing sudden temperature changes within the decolorization reactor and helping to ensure the stability of the temperature control process within the decolorization reactor. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram illustrating the structural relationship between the stirring shaft, stirring wheel, rotating shaft, driving gear, first bevel gear, second bevel gear, rotating rod, rotating cam, vent plate, lifting rod, return spring, lifting rack, support block, rotating groove, driving gear, and auxiliary roller in the embodiments of this application. Figure 3 This is a structural schematic diagram illustrating the positional relationship of the vent plate in the heating box and cooling box in a specific embodiment of this application; Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.

[0033] Reference numerals in the attached drawings: 1. Decolorizing kettle body; 2. Drive motor; 3. Stirring shaft; 4. Stirring wheel; 5. Rotating shaft; 6. Heating box; 7. Cooling box; 8. Snap-fit ​​plate; 9. Snap-fit ​​groove; 10. Drive gear; 11. First bevel gear; 12. Second bevel gear; 13. Rotating rod; 14. Rotating cam; 15. Vent plate; 16. Lifting rod; 17. Return spring; 18. Sealing box; 19. Lifting rack; 20. Support block; 21. Rotating groove; 22. Drive gear; 23. Knob; 24. Auxiliary roller. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail below.

[0035] Example: This application discloses a low-temperature vacuum drying vessel for preparing high-purity fish oil, referring to... Figure 1 It includes a decolorizing kettle body 1, the top of which is equipped with a pipe for evacuating the inside of the decolorizing kettle body 1 and venting waste gas, to ensure that the fish oil is in a vacuum state during the decolorization process and that the waste gas inside the decolorizing kettle body 1 can be discharged in time after the decolorization is completed.

[0036] Reference Figure 1 and Figure 2 The decolorizing kettle body 1 is equipped with a stirring shaft 3 and a stirring wheel 4. After fish oil and the corresponding decolorizing agent are added to the decolorizing kettle body 1, the stirring shaft 3 drives the stirring wheel 4 to stir inside the kettle, thereby allowing the fish oil and the decolorizing agent to fully mix, which is beneficial to improving the decolorization effect of the fish oil. A drive motor 2 is tightly attached to the top of the decolorizing kettle body 1. The drive motor 2 is connected to the stirring shaft 3. The drive motor 2 drives the stirring shaft 3 to rotate, thereby allowing the stirring wheel 4 to fully mix the fish oil and the decolorizing agent inside the kettle.

[0037] At the same time, refer to Figure 1 , Figure 2 as well as Figure 3 The decolorizing kettle body 1 is also equipped with a rotating shaft 5, which is connected to the top of the stirring shaft 3. While the drive motor 2 drives the stirring shaft 3 to rotate, the rotating shaft 5 rotates synchronously with the stirring shaft 3. Heating boxes 6 and cooling boxes 7 are respectively installed on the left and right sides of the top of the decolorizing kettle body 1. Corresponding pipes are provided on the top of the decolorizing kettle body 1 to fill the heating boxes 6 or cooling boxes 7 with the corresponding hot or cold air. During the rotation of the rotating shaft 5, the heating boxes 6 or cooling boxes 7 are controlled to adjust the temperature inside the decolorizing kettle body 1.

[0038] This setup requires the rotation of the rotating shaft 5 to regulate the temperature inside the decolorizing kettle 1 via the heating box 6 or cooling box 7. The heating box 6 or cooling box 7 regulates the temperature of the decolorizing kettle 1 during the rotation of the rotating shaft 5. The rotation of the rotating shaft 5 is driven by the rotation of the stirring shaft 3. This ensures that when temperature regulation is needed inside the decolorizing kettle 1, the heating box 6 or cooling box 7 regulates the temperature while the stirring shaft 3 drives the rotating shaft 5. This tightly links the rotation of the stirring shaft 3 with the temperature regulation within the decolorizing kettle 1, effectively ensuring that the need for temperature regulation during fish oil decolorization does not affect the normal operation of the stirring device. It also ensures that the two key steps of temperature regulation and stirring are performed synchronously, facilitating coordinated operation between them. Simultaneous stirring during temperature regulation helps ensure precise temperature control, thus effectively guaranteeing the decolorization effect of the fish oil.

[0039] Specifically, refer to Figure 3 and Figure 4 A snap-fit ​​plate 8 is integrally formed on the periphery of the end of the stirring shaft 3 near the rotating shaft 5. A slot 9 is formed on the bottom of the rotating shaft 5 near the end of the stirring shaft 3, and the snap-fit ​​plate 8 snaps into the corresponding slot 9. The snap-fit ​​plate 8 and the slot 9 are used to snap-fit ​​and connect the stirring shaft 3 and the rotating shaft 5, so that the stirring shaft 3 can drive the rotating shaft 5 to stir synchronously during rotation. Setting the stirring shaft 3 and the rotating shaft 5 to a snap-fit ​​connection method makes it easier to install, disassemble, and replace the stirring shaft 3 and the rotating shaft 5.

[0040] Specifically, refer to Figure 1 , Figure 2 as well as Figure 3 A drive gear 10 is integrally connected to the top of the rotating shaft 5 along its circumference, and the drive gear 10 is horizontally positioned. A first bevel gear 11 and a second bevel gear 12 are meshed with the left and right sides of the drive gear 10, respectively, and both the first bevel gear 11 and the second bevel gear 12 are vertically positioned. The first bevel gear 11 is connected to the heating box 6, and the second bevel gear 12 is connected to the cooling box 7. As the drive gear 10 rotates with the rotating shaft 5, it meshes with either the first bevel gear 11 or the second bevel gear 12, thereby driving the first bevel gear 11 or the second bevel gear 12 to rotate. The first bevel gear 11 controls the heating box 6 to raise the temperature inside the decolorizing kettle body 1, and the second bevel gear 12 controls the cooling box 7 to lower the temperature inside the decolorizing kettle body 1.

[0041] During the rotation of the first bevel gear 11, the heating box 6 is controlled to inject hot air into the decolorizing kettle body 1 to raise the temperature inside the decolorizing kettle body 1; during the rotation of the second bevel gear 12, the cooling box 7 is controlled to inject cold air into the decolorizing kettle body 1 to lower the temperature inside the decolorizing kettle body 1.

[0042] Specifically, the first bevel gear 11 and the second bevel gear 12 are both located above the driving gear 10, and the first bevel gear 11 and the second bevel gear 12 are both slidably arranged in the vertical direction.

[0043] In the initial state, when no temperature adjustment is required during the fish oil decolorization process, both the first bevel gear 11 and the second bevel gear 12 are located above the drive gear 10. At this time, neither the first bevel gear 11 nor the second bevel gear 12 meshes with the drive gear 10. In this state, the drive motor 2 drives the stirring shaft 3 to rotate inside the decolorization kettle body 1. Only the stirring step is performed inside the decolorization kettle body 1, and no temperature adjustment is performed.

[0044] When the decolorizing kettle body 1 requires heating, the first bevel gear 11 slides towards the drive gear 10 until it meshes with the drive gear 10, while the second bevel gear 12 remains stationary above the drive gear 10. In this state, when the stirring shaft 3 drives the rotating shaft 5 to rotate, the drive gear 10 and the first bevel gear 11 mesh, thereby controlling the heating box 6 to inject hot gas into the decolorizing kettle body 1 to complete the heating process within the decolorizing kettle body 1.

[0045] When cooling is required inside the decolorizing reactor body 1, the first bevel gear 11 remains stationary, still positioned above the drive gear 10. The second bevel gear 12 is slid closer to the drive gear 10 until it meshes with the drive gear 10. In this state, when the stirring shaft 3 drives the rotating shaft 5 to rotate, the drive gear 10 and the second bevel gear 12 mesh, thereby controlling the cooling box 7 to inject cold air into the decolorizing reactor body 1 to complete the cooling process inside the decolorizing reactor body 1.

[0046] Specifically, refer to Figure 1 , Figure 2 as well as Figure 3 The first bevel gear 11 and the second bevel gear 12 are both horizontally connected at opposite ends with a rotating rod 13. A rotating cam 14 is integrally fitted around the circumference of the rotating rod 13. Both the heating box 6 and the cooling box 7 are equipped with vent plates 15. A lifting rod 16 is provided between the vent plate 15 and the corresponding rotating cam 14. One end of the lifting rod 16 is connected to the vent plate 15, and the other end of the lifting rod 16 is connected to the rotating cam 14.

[0047] When the decolorizing kettle body 1 needs to be heated, the first bevel gear 11 drives the corresponding rotating rod 13 and rotating cam 14 to rotate. As the rotating cam 14 rotates, it drives the corresponding lifting rod 16 to rise and fall vertically. While the lifting rod 16 is rising and falling, it simultaneously drives the vent plate 15 to slide up and down within the heating box 6. As the vent plate 15 slides within the heating box 6, when the vent plate 15 slides down out of the heating box 6, the heating box 6 is in the open state. At this time, the hot air in the heating box 6 is injected into the decolorizing kettle body 1 to raise the temperature. When cooling is required inside the decolorizing autoclave 1, the second bevel gear 12 drives the corresponding rotating rod 13 and rotating cam 14 to rotate. As the rotating cam 14 rotates, it drives the corresponding lifting rod 16 to rise and fall vertically. Simultaneously, the lifting rod 16 drives the vent plate 15 to slide up and down within the cooling box 7. As the vent plate 15 slides within the cooling box 7, when it slides down out of the cooling box 7, the cooling box 7 is in the open state. At this time, the hot air in the heating box 6 is injected into the decolorizing autoclave 1 to raise the temperature.

[0048] The vent plate 15 is installed in a lifting and sliding manner by rotating the cam 14. When the vent plate 15 slides down out of the heating box 6 or cooling box 7, it can heat up or cool down the inside of the decolorizing kettle body 1. When the vent plate 15 slides up into the heating box 6 or cooling box 7, the heating box 6 or cooling box 7 is in a closed state, and no heating or cooling is performed inside the decolorizing kettle body 1.

[0049] This makes the temperature control process inside the decolorizing kettle body 1 intermittent and buffered by the heating box 6 or cooling box 7, which can effectively avoid the problem of sudden temperature changes inside the decolorizing kettle body 1 and help ensure the stability of the temperature control process inside the decolorizing kettle body 1.

[0050] Furthermore, referring to Figure 2 A return spring 17 is integrally connected to the top of the vent plate 15 along the vertical direction. The vertical sliding movement of the vent plate 15 is achieved by using the rotating cam 14 and the return spring 17.

[0051] Specifically, refer to Figure 1 , Figure 2 as well as Figure 3 A sealing box 18 is integrally connected to the outer side of the decolorizing kettle body 1. A lifting rack 19 is installed vertically inside the sealing box 18. A support block 20 is integrally connected to the top of the lifting rack 19. A rotating groove 21 is opened on the support block 20. The end of the rotating rod 13 passes through the decolorizing kettle body 1 and is inserted into the rotating groove 21. A drive gear 22 is provided inside the sealing box 18, and the drive gear 22 and the lifting rack 19 are kept in mesh. A knob 23 is installed outside the sealing box 18, and the knob 23 and the drive gear 22 are connected through a corresponding rotating shaft.

[0052] Specifically, when the rotating rod 13 needs to be raised or lowered, the corresponding knob 23 is rotated, which drives the drive gear 22 and the lifting rack 19 to mesh. The drive gear 22 drives the lifting rack 19 to rise or fall within the sealed box 18, which in turn drives the corresponding rotating rod 13 to slide up or down, and then drives the corresponding first bevel gear 11 or second bevel gear 12 to rise or fall.

[0053] Furthermore, referring to Figure 2 An auxiliary roller 24 is sleeved around the lifting rod 16, and the bottom of the auxiliary roller 24 is connected to the top of the rotating cam 14.

[0054] The auxiliary roller 24 is used to transition the connection between the rotating cam 14 and the lifting rod 16, so that the rotating cam 14 can drive the lifting rod 16 to move up and down in the vertical direction more smoothly, which helps to improve the stability of the lifting rod 16 sliding in the vertical direction.

[0055] Furthermore, the overall shape of the breathable plate 15 is a right-angled triangle, and the top of the breathable plate 15 is inclined.

[0056] The vent plate 15 is designed as a right-angled triangle. As the vent plate 15 gradually slides downwards out of the heating box 6 or cooling box 7, the opening between the vent plate 15 and the heating box 6 or cooling box 7 gradually increases. The greater the distance the vent plate 15 slides out of the heating box 6 or cooling box 7, the larger the opening of the heating box 6 or cooling box 7 becomes. This ensures that the process of injecting gas into the decolorizing reactor body 1 from the heating box 6 or cooling box 7 is gradual, thereby further avoiding the problem of sudden temperature changes inside the decolorizing reactor body 1 and helping to ensure the stability of the temperature control process inside the decolorizing reactor body 1.

[0057] The implementation principle of the low-temperature vacuum drying vessel for preparing high-purity fish oil in this application embodiment is as follows: The top of the decolorizing kettle body 1 is equipped with a pipe for evacuating the inside of the decolorizing kettle body 1 and for venting waste gas, so as to ensure that the fish oil is in a vacuum state during the decolorization process and that the waste gas inside the decolorizing kettle body 1 can be discharged in time after the decolorization is completed.

[0058] The decolorizing kettle body 1 is equipped with a stirring shaft 3 and a stirring wheel 4. After fish oil and the corresponding decolorizing agent are added to the decolorizing kettle body 1, the stirring shaft 3 drives the stirring wheel 4 to stir inside the kettle, thereby allowing the fish oil and the decolorizing agent to fully mix, which is beneficial to improving the decolorization effect of the fish oil. A drive motor 2 is tightly attached to the top of the decolorizing kettle body 1. The drive motor 2 is connected to the stirring shaft 3. The drive motor 2 drives the stirring shaft 3 to rotate, thereby allowing the stirring wheel 4 to fully mix the fish oil and the decolorizing agent inside the kettle.

[0059] Meanwhile, a rotating shaft 5 is also installed inside the decolorizing kettle body 1. The rotating shaft 5 is connected to the top of the stirring shaft 3. While the drive motor 2 drives the stirring shaft 3 to rotate, the rotating shaft 5 rotates synchronously with the stirring shaft 3. A heating box 6 and a cooling box 7 are respectively installed on the left and right sides of the top of the decolorizing kettle body 1. Corresponding pipes are provided on the top of the decolorizing kettle body 1 to fill the heating box 6 or cooling box 7 with the corresponding hot or cold air. During the rotation of the rotating shaft 5, the heating box 6 or cooling box 7 controls the temperature treatment inside the decolorizing kettle body 1.

[0060] This setup requires the rotation of the rotating shaft 5 to regulate the temperature inside the decolorizing kettle 1 via the heating box 6 or cooling box 7. The heating box 6 or cooling box 7 regulates the temperature of the decolorizing kettle 1 during the rotation of the rotating shaft 5. The rotation of the rotating shaft 5 is driven by the rotation of the stirring shaft 3. This ensures that when temperature regulation is needed inside the decolorizing kettle 1, the heating box 6 or cooling box 7 regulates the temperature while the stirring shaft 3 drives the rotating shaft 5. This tightly links the rotation of the stirring shaft 3 with the temperature regulation within the decolorizing kettle 1, effectively ensuring that the need for temperature regulation during fish oil decolorization does not affect the normal operation of the stirring device. It also ensures that the two key steps of temperature regulation and stirring are performed synchronously, facilitating coordinated operation between them. Simultaneous stirring during temperature regulation helps ensure precise temperature control, thus effectively guaranteeing the decolorization effect of the fish oil.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A low-temperature vacuum drying vessel for preparing high-purity fish oil, characterized in that: The apparatus includes a decolorizing kettle body (1), a drive motor (2) is fixedly mounted on the top of the decolorizing kettle body (1), a stirring shaft (3) and a stirring wheel (4) are provided inside the decolorizing kettle body (1), the drive motor (2) is connected to the stirring shaft (3), a rotating shaft (5) is also provided inside the decolorizing kettle body (1), the rotating shaft (5) is connected to the stirring shaft (3), a heating box (6) and a cooling box (7) are respectively installed on the left and right sides of the top of the decolorizing kettle body (1), and the rotating shaft (5) controls the heating box (6) or the cooling box (7) to perform temperature adjustment treatment inside the decolorizing kettle body (1) during rotation.

2. The low-temperature vacuum drying vessel for preparing high-purity fish oil according to claim 1, characterized in that: The stirring shaft (3) has a snap-fit ​​plate (8) integrally formed on the periphery of one end near the rotating shaft (5), and a slot (9) is provided at the bottom of one end of the rotating shaft (5) near the stirring shaft (3), and the snap-fit ​​plate (8) snaps into the corresponding slot (9).

3. The low-temperature vacuum drying vessel for preparing high-purity fish oil according to claim 2, characterized in that: The rotating shaft (5) is integrally connected to a drive gear (10) along its circumference. The left and right sides of the drive gear (10) are respectively meshed with a first bevel gear (11) and a second bevel gear (12). The first bevel gear (11) is connected to the heating box (6), and the second bevel gear (12) is connected to the cooling box (7). The first bevel gear (11) is used to control the heating box (6) to heat up the body of the decolorizing kettle (1), and the second bevel gear (12) is used to control the cooling box (7) to cool down the body of the decolorizing kettle (1).

4. The low-temperature vacuum drying vessel for preparing high-purity fish oil according to claim 3, characterized in that: The first bevel gear (11) and the second bevel gear (12) are both located above the driving gear (10), and the first bevel gear (11) and the second bevel gear (12) are both slidably arranged in the vertical direction.

5. The low-temperature vacuum drying vessel for preparing high-purity fish oil according to claim 4, characterized in that: The first bevel gear (11) and the second bevel gear (12) are both connected by a rotating rod (13) in a horizontal direction at their opposite ends. A rotating cam (14) is integrally fitted around the rotating rod (13). A vent plate (15) is installed in both the heating box (6) and the cooling box (7). A lifting rod (16) is added between the vent plate (15) and the corresponding rotating cam (14). One end of the lifting rod (16) is connected to the vent plate (15), and the other end of the lifting rod (16) is connected to the rotating cam (14).

6. The low-temperature vacuum drying vessel for preparing high-purity fish oil according to claim 5, characterized in that: A return spring (17) is integrally connected to the top of the ventilated plate (15) in the vertical direction.

7. The low-temperature vacuum drying vessel for preparing high-purity fish oil according to claim 6, characterized in that: A sealing box (18) is integrally connected to the outside of the decolorizing kettle body (1). A lifting rack (19) is installed vertically inside the sealing box (18). A support block (20) is integrally connected to the top of the lifting rack (19). A rotating groove (21) is provided on the support block (20). The end of the rotating rod (13) passes through the decolorizing kettle body (1) and is inserted into the rotating groove (21). A drive gear (22) is provided inside the sealing box (18). The drive gear (22) and the lifting rack (19) are meshed. A knob (23) is installed outside the sealing box (18). The knob (23) and the drive gear (22) are connected by a corresponding rotating shaft.

8. The low-temperature vacuum drying vessel for preparing high-purity fish oil according to claim 7, characterized in that: The lifting rod (16) is fitted with an auxiliary roller (24) around its periphery, and the bottom of the auxiliary roller (24) is connected to the top of the rotating cam (14).

9. The low-temperature vacuum drying vessel for preparing high-purity fish oil according to claim 8, characterized in that: The breathable plate (15) is in the shape of a right triangle, and the top of the breathable plate (15) is inclined.

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