A device and method for removing 3-chloropropanol and glycidol from fish oil.

Abstract

This invention discloses a device and method for removing 3-chloropropanol and glycidol from fish oil, relating to the field of fish oil refining technology. The device includes a shell and a feeding assembly. A heating jacket is installed at the bottom of the shell, and a frame is installed on the outer side of the shell. A feeding hopper is fixed to the top of the frame. The feeding assembly is located in the middle of the shell and includes a motor. The motor is located at the middle of one end of the shell, and its output end is connected to a drive shaft. This invention achieves efficient and automated separation of 3-chloropropanol and glycidol from fish oil through an integrated continuous distillation and sealed inlet / outlet structure. Under negative pressure and heating conditions, the equipment continuously conveys fish oil using a spiral scraper, causing 3-chloropropanol and glycidol to vaporize and separate. Simultaneously, an automatically linked, sealed rotating valve core ensures continuous material intake and output. The entire process requires no downtime, significantly improving production efficiency and separation effect while ensuring the quality of the fish oil.

Description

Technical Field

[0001] This invention relates to the field of fish oil refining technology, specifically to a device and method for removing 3-chloropropanol and glycidol from fish oil. Background Technology

[0002] Fish oil is an oily substance extracted from the tissues of oily fish. It is a general term for all lipid substances in fish. In fish oil, 3-chloropropanol and glycidol mainly exist in the form of esters, namely 3-chloropropanol ester and glycidol ester. These are processing contaminants generated during the refining of fish oil. In order to ensure the safety and compliance of fish oil products, they need to be removed by distillation.

[0003] For example, patent CN220056733U discloses a plasticizer removal device. This patent, by setting up a connecting part and an agitator plate, and by having the connecting part cooperate with a reciprocating screw and a motor, can agitate the edible oil in the deodorizing pot, thereby ensuring that the edible oil in the deodorizing pot is heated evenly, thus reducing the heating time of the edible oil and ultimately improving work efficiency. However, in the process of heating, distilling and refining fish oil, this type of equipment can only adopt intermittent batch operations of feeding, vacuuming, distilling and discharging, and cannot achieve continuous processing of fish oil, thus restricting the overall production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for removing 3-chloropropanol and glycidol from fish oil, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device and method for removing 3-chloropropanol and glycidol from fish oil, comprising a housing and a feeding assembly. A heating jacket is provided at the bottom of the housing, and a frame is provided on the outer side of the housing. A feeding hopper is fixed at the top of the frame. The feeding assembly is located in the middle of the housing and includes a motor. The motor is located in the middle of one end of the housing, and the output end of the motor is connected to a drive shaft. A toothed sleeve is slidably connected to the outer side of one end of the drive shaft, and a first toothed shaft is slidably connected to one end of the toothed sleeve. A spiral scraper is provided on the outer side of the first toothed shaft. A second toothed shaft is inserted into the middle of the toothed sleeve, and a third toothed shaft is slidably connected to the other end of the toothed sleeve. A synchronous pulley set is provided at one end of both the third toothed shaft and the second toothed shaft, and a valve stem is provided at the output end of the synchronous pulley set. A valve core is fixedly connected to one end of the valve stem, and a feeding groove is provided on the outer side of the valve core. A valve shell is slidably connected to the outer side of the valve core.

[0006] Furthermore, the spiral scraper has a U-shaped cross-section and is slidably connected to the housing.

[0007] Furthermore, the second gear shaft is rotatably connected to the first gear shaft, the first gear shaft is rotatably connected to the housing, and the housing is rotatably connected to the third gear shaft.

[0008] Furthermore, there are two valve housings, which are located at the upper left and lower right corners of the housing, respectively. The upper and lower ends of the valve housing located at the upper left corner are connected to the feed hopper and the interior of the housing, respectively.

[0009] Furthermore, a pump body is mounted on one top end of the housing, and an exhaust pipe is provided on one side of the pump body. A pressure sensor is fixed on one top end of the housing.

[0010] Furthermore, the spiral scraper is internally equipped with an agitation assembly, which includes a torsion spring shaft. The spiral scraper is rotatably connected to the torsion spring shaft, and one end of the torsion spring shaft is fixedly connected to a swing arm. One end of the swing arm is rotatably connected to a connecting shaft, and one end of the connecting shaft is fixedly connected to an anti-slip wheel. The other end of the connecting shaft is equipped with a synchronizing gear, and one side of the synchronizing gear meshes with a driven gear. The driven gear is internally equipped with a stirring shaft, and the outside of the stirring shaft is provided with stirring blades.

[0011] Furthermore, the stirring shaft is rotatably connected to the spiral scraper, and the axis of the stirring shaft coincides with the axis of the torsion spring shaft.

[0012] Furthermore, a switching assembly is installed at one end of the interior of the housing, and the switching assembly includes a guide rod. The guide rod is symmetrically arranged on one side of the interior of the housing, and a hanging plate is slidably connected to the outer side of the guide rod. Floats are installed at the lower ends of both sides of the hanging plate, and guide grooves are symmetrically opened on both sides of the hanging plate. A sliding column is slidably connected inside the guide groove, and an adjusting sleeve is fixedly connected to one end of the sliding column.

[0013] Furthermore, the adjusting sleeve is rotatably connected to the toothed sleeve, and the through hole in the middle of the toothed sleeve is prismatic.

[0014] Furthermore, the method for removing 3-chloropropanol and glycidol from fish oil, applied to the device for removing 3-chloropropanol and glycidol from fish oil, includes the following steps: Step 1: Start the motor, which drives the gear sleeve to rotate synchronously through the transmission shaft. The gear sleeve simultaneously meshes and drives the first gear shaft, the second gear shaft, and the third gear shaft to rotate together. The second and third gear shafts drive their respective valve cores to rotate continuously through the synchronous belt pulley group and the valve stem. The fish oil in the hopper flows into the feeding groove of the upper valve core and is then fed downwards with the rotation, falling into the housing through the valve shell, thus realizing automatic feeding. Step 2: Start the pump to extract air from inside the housing to create a negative pressure environment. The pressure sensor monitors the air pressure inside the cavity in real time to accurately maintain a stable negative pressure condition. At the same time, the heat medium at the specified temperature is introduced into the heating jacket through the conveying equipment to uniformly heat the bottom of the housing. Step 3: The first gear shaft drives the spiral scraper to rotate, pushing the fish oil to move uniformly to the right along the shell axis. The fish oil completes distillation and separation in a fully heated environment. During this process, the stirring components work together. When it is at the bottom of the shell, the anti-slip wheel relies on its own weight and the elastic clamping force provided by the torsion spring shaft to stick tightly to the inner wall of the shell. As it moves with the spiral scraper, it rotates due to friction. Through the coupling shaft, synchronous gear and driven gear, it drives the stirring shaft and stirring blade to continuously stir the fish oil. When the anti-slip wheel moves to the upper area of ​​the shell, it deflects downward through the swing arm around the torsion spring shaft under the action of gravity, and detaches from the inner wall of the shell. The stirring mechanism automatically stops operating. Step 4: The fish oil distilled in the shell is continuously discharged through the valve core and valve shell in the lower right corner and transported to the next process. When the pressure sensor detects an increase in the gas pressure in the cavity, the equipment promptly transports the enriched 3-chloropropanol and glycidol vaporized gas through the exhaust pipe to a special recovery equipment for centralized processing through the closed-loop control system. Step 5: Under the buoyancy of the oil, the float maintains the sliding column in the vertical section of the guide groove. The gear sleeve maintains complete engagement with the first, second, and third gear shafts. The equipment continuously performs the entire process of feeding, conveying, and discharging. When the liquid level is lower than the preset threshold, the float descends with the liquid level, the hanging plate slides down along the guide rod, and the inclined side wall at the upper end of the guide groove pushes the sliding column to the left. The adjusting sleeve drives the gear sleeve to disengage from the third gear shaft, automatically pausing the discharge. Similarly, when the liquid level is too high, the switching component also links the gear sleeve to disengage from the third gear shaft, while the first and second gear shafts maintain transmission, automatically pausing the feeding. After the liquid level returns to normal, each component resets in sequence, and the feeding and discharging automatically restart.

[0015] This invention provides a device and method for removing 3-chloropropanol and glycidol from fish oil, which have the following beneficial effects: 1. This invention achieves efficient and automated separation of 3-chloropropanol and glycidol in fish oil through an integrated continuous distillation and sealed feed-in / out structure. Under negative pressure and heating conditions, the equipment uses a spiral scraper to continuously transport fish oil, causing 3-chloropropanol and glycidol to vaporize and separate. At the same time, the automatically linked, sealed rotating valve core enables continuous material feeding and discharging. The entire process does not require machine shutdown, significantly improving production efficiency and separation effect, and ensuring the product quality of fish oil.

[0016] 2. The stirring component of this invention is driven by an anti-slip wheel linked to the spiral scraper. During the distillation and conveying of fish oil, it automatically stirs the fish oil, making it heat evenly, thereby greatly improving the heating and vaporization efficiency. When the mechanism runs to the non-working area, it can automatically disengage and stop stirring, effectively avoiding idling energy consumption and component wear, and reducing the long-term operating cost of the equipment.

[0017] 3. This invention achieves adaptive start and stop of feeding and discharging through a purely mechanically linked liquid level interlock control mechanism, ensuring the stability and safety of the separation process. This mechanism senses changes in liquid level in real time through a float. When the liquid level exceeds the safe range, it can automatically cut off the meshing between the toothed sleeve and the corresponding toothed shaft, pausing feeding or discharging. This effectively prevents 3-chloropropanol and glycidol vapor from accidentally entering the fish oil discharge pipe or disrupting the working conditions. This design requires no manual intervention or additional electrical control, has a high degree of automation, and reduces operating costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a device for removing 3-chloropropanol and glycidol from fish oil according to the present invention. Figure 2 This is a schematic diagram of the overall right-side structure of a device for removing 3-chloropropanol and glycidol from fish oil according to the present invention; Figure 3 This is a schematic diagram of the switching component structure of a device for removing 3-chloropropanol and glycidol from fish oil according to the present invention. Figure 4 This is a schematic diagram of the second gear shaft structure of a device for removing 3-chloropropanol and glycidol from fish oil according to the present invention. Figure 5 This is a schematic diagram of the toothed sleeve structure of a device for removing 3-chloropropanol and glycidol from fish oil according to the present invention. Figure 6 This is a schematic diagram of the valve core structure of a device for removing 3-chloropropanol and glycidol from fish oil according to the present invention. Figure 7 This is a schematic diagram of the stirring component structure of a device for removing 3-chloropropanol and glycidol from fish oil according to the present invention.

[0019] In the diagram: 1. Housing; 2. Heating jacket; 3. Frame; 4. Feed hopper; 5. Pump body; 6. Exhaust pipe; 7. Pressure sensor; 8. Feeding assembly; 801. Motor; 802. Drive shaft; 803. Gear sleeve; 804. First gear shaft; 805. Spiral scraper; 806. Second gear shaft; 807. Third gear shaft; 808. Synchronous belt pulley set; 809. Valve stem; 810. Valve core; 811. Feeding assembly. 812. Valve housing; 9. Agitator assembly; 901. Torsion spring shaft; 902. Rocker arm; 903. Connecting shaft; 904. Anti-slip wheel; 905. Synchronizing gear; 906. Driven gear; 907. Agitator shaft; 908. Agitator blade; 10. Switching assembly; 1001. Guide rod; 1002. Hanging plate; 1003. Float; 1004. Guide groove; 1005. Sliding column; 1006. Adjusting sleeve. Detailed Implementation

[0020] Please see Figures 1 to 6This invention provides a technical solution: a device and method for removing 3-chloropropanol and glycidol from fish oil, comprising a housing 1 and a feeding assembly 8. A heating jacket 2 is installed at the bottom of the housing 1, and a frame 3 is installed on the outer side of the housing 1. A feeding hopper 4 is fixed to the top of the frame 3. A pump body 5 is installed at one end of the top of the housing 1, and an exhaust pipe 6 is installed on one side of the pump body 5. A pressure sensor 7 is fixed to one end of the top of the housing 1. The feeding assembly 8 is located in the middle of the housing 1 and includes a motor 801. The motor 801 is located in the middle of one end of the housing 1, and a drive shaft 802 is connected to the output end of the motor 801. A toothed sleeve 803 is slidably connected to the outer side of one end of the drive shaft 802, and a first toothed shaft 804 is slidably connected to the inner end of the toothed sleeve 803. A spiral scraper 805 is installed on the outer side of the first toothed shaft 804. The spiral scraper 805 has a U-shaped cross-section. Plate 805 is slidably connected to housing 1. A second gear shaft 806 is inserted into the middle of the gear sleeve 803, and a third gear shaft 807 is slidably connected to the other end of the gear sleeve 803. The second gear shaft 806 is rotatably connected to the first gear shaft 804, and the first gear shaft 804 is rotatably connected to housing 1. Housing 1 is rotatably connected to the third gear shaft 807. A synchronous pulley group 808 is provided at one end of the third gear shaft 807 and the second gear shaft 806. A valve stem 809 is installed at the output end of the synchronous pulley group 808. A valve core 810 is fixedly connected to one end of the valve stem 809. A feeding groove 811 is opened on the outer side of the valve core 810. A valve shell 812 is slidably connected to the outer side of the valve core 810. There are two valve shells 812, and the two valve shells 812 are located at the upper left corner and the lower right corner of housing 1, respectively. The upper and lower ends of the valve shell 812 located at the upper left corner are connected to the feeding hopper 4 and the interior of housing 1, respectively.

[0021] The specific operation is as follows: After the fish oil enters the shell 1 from the hopper 4, it gathers in the lower left corner of the shell 1 under gravity. First, the pump 5 is started to extract air from the shell 1 to create a negative pressure environment. At the same time, the pressure sensor 7 monitors the air pressure changes in the cavity in real time to accurately maintain a stable negative pressure condition. Then, the heating jacket 2 is started to uniformly heat the bottom of the shell 1. The negative pressure environment can effectively reduce the boiling point of the material. In addition, the boiling points of 3-chloropropanol and glycidol are much lower than those of fish oil. These two harmful components can be fully heated and vaporized into a gaseous state, achieving initial separation from the liquid fish oil and ensuring the quality of the raw materials. After the controller starts the motor 801, the motor 801 drives the transmission shaft 802 and the gear sleeve 80 3. Synchronous rotation: Since the gear sleeve 803 meshes with the teeth of the first gear shaft 804, the second gear shaft 806, and the third gear shaft 807 respectively, it can synchronously drive the three sets of gear shafts to rotate together. When the first gear shaft 804 rotates, it drives the outer spiral scraper 805 to push the fish oil to the right at a uniform speed along the axis of the shell 1. The fish oil is in a heated environment throughout the continuous transportation process, completing the distillation and separation operation. At the same time, this device controls the fish oil level below the first gear shaft 804. During the movement of the spiral scraper 805, it can form a layered barrier for the fish oil on both sides. At the same time, the spiral scraper 805 can also guide and push the vaporized mixed gas in the cavity, guiding the gas to collect below the pump body 5 for subsequent unified collection. Meanwhile, the synchronously operating second gear shaft 806 and third gear shaft 807 drive the valve core 810 to rotate continuously via the synchronous pulley group 808 and valve stem 809. When the fish oil flows into the feeding trough 811 above the valve core 810 under gravity, the valve core 810 rotates to move it downwards, allowing the oil to flow downwards from the valve housing 812. This automatically transports the oil inside the hopper 4 to the housing 1, while simultaneously transporting the distilled oil in the housing 1 to the next process through the valve housing 812 in the lower right corner and the pipeline. The valve core 810 is equipped with a sealing element on its outer side, which remains tightly fitted to the inner wall of the valve housing 812 throughout the rotation process, forming a reliable dynamic seal structure and effectively... By preventing backflow of external air, the interference of feeding and discharging actions on the vacuum inside the shell 1 is minimized, ensuring continuous and stable distillation. Subsequently, when the pressure sensor 7 detects an abnormal increase in gas pressure inside the chamber, the equipment responds promptly through the controller and closed-loop control system, transporting the vaporized gases of 3-chloropropanol and glycidol accumulated inside the chamber to a dedicated recovery device for centralized processing via the exhaust pipe 6. The entire set of equipment relies on a linkage transmission structure and a sealed feeding and discharging mechanism, eliminating the need for intermittent operation and ultimately achieving continuous and automatic separation of 3-chloropropanol and glycidol in fish oil. This significantly improves production efficiency, simplifies manual operation, and reliably ensures the removal of contaminants and the quality of the finished fish oil.

[0022] Please see Figure 7The spiral scraper 805 is internally equipped with an agitation assembly 9, which includes a torsion spring shaft 901. The spiral scraper 805 is rotatably connected to the torsion spring shaft 901. One end of the torsion spring shaft 901 is fixedly connected to a swing arm 902. One end of the swing arm 902 is rotatably connected to a connecting shaft 903. One end of the connecting shaft 903 is fixedly connected to an anti-slip wheel 904. The other end of the connecting shaft 903 is equipped with a synchronous gear 905. One side of the synchronous gear 905 is meshed with a driven gear 906. The driven gear 906 is internally equipped with a stirring shaft 907. The stirring shaft 907 is externally equipped with a stirring blade 908. The stirring shaft 907 is rotatably connected to the spiral scraper 805. The axis of the stirring shaft 907 coincides with the axis of the torsion spring shaft 901. The specific operation is as follows: During the process of the spiral scraper 805 pushing fish oil, due to the self-weight of the anti-slip wheel 904, the anti-slip wheel 904 located at the lower part of the spiral scraper 805 can rely on its own weight to tightly adhere to the inner wall of the housing 1. At the same time, the torsion spring shaft 901 can provide elastic auxiliary clamping force, further increasing the frictional resistance between the anti-slip wheel 904 and the inner wall of the housing 1, effectively preventing transmission slippage and ensuring the stability of power transmission. When the spiral scraper 805 rotates synchronously with the first gear shaft 804, it can drive the anti-slip wheel 904 to rotate autonomously by friction. Then, through the coupling shaft 903, synchronous gear 905, and driven gear 906, it drives the stirring shaft 907 and the outer stirring blade 908 to rotate synchronously, continuously stirring the fish oil being transported. The stirring action can strongly... The internal heat exchange of the oil makes the fish oil heat more evenly and fully, greatly improving the heating and vaporization efficiency, and thus improving the overall processing capacity of the entire equipment. When the anti-slip wheel 904 moves to the upper part of the shell 1 with the spiral scraper 805, the direction of gravity of the anti-slip wheel 904 is opposite to that of the upper inner wall of the shell 1. Under the action of gravity, it will drive the swing arm 902 to deflect downward around the axis of the torsion spring shaft 901, so that the anti-slip wheel 904 is no longer in close contact with the inner wall of the shell 1. The frictional resistance between the two is greatly reduced. At this time, the stirring shaft 907 and the stirring blade 908 are lifted by the mechanism and moved out of the fish oil surface. The stirring mechanism automatically stops running, avoiding the ineffective power consumption generated by the idle running of the parts. This not only effectively reduces the overall energy consumption of the equipment, reduces the wear of parts, extends the service life, but also saves the long-term operating cost of the equipment.

[0023] Please see Figure 3 and Figure 5A switching assembly 10 is installed at one end of the interior of the housing 1. The switching assembly 10 includes a guide rod 1001. The guide rod 1001 is symmetrically arranged on one side of the interior of the housing 1. A hanging plate 1002 is slidably connected to the outer side of the guide rod 1001. Floats 1003 are installed at the lower ends of both sides of the hanging plate 1002. Guide grooves 1004 are symmetrically opened on both sides of the hanging plate 1002. A sliding column 1005 is slidably connected inside the guide groove 1004. An adjusting sleeve 1006 is fixedly connected to one end of the sliding column 1005. The adjusting sleeve 1006 is rotatably connected to the toothed sleeve 803. The through hole in the middle of the toothed sleeve 803 is prismatic. The specific operation is as follows: During normal operation of the equipment, the float 1003 relies on the buoyancy generated by the oil to maintain the slide column 1005 in the vertical section of the guide groove 1004. At this time, the gear sleeve 803 maintains complete tooth meshing with the first gear shaft 804, the second gear shaft 806, and the third gear shaft 807 respectively. The entire transmission mechanism operates normally, and the equipment can continuously complete the entire process of feeding, conveying, and discharging. During the operation of the equipment, the flow state of the fish oil and the continuous vaporization and separation of 3-chloropropanol and glycidol inside the equipment are affected. Due to the impact of consumption, the oil level inside the shell 1 will gradually decrease. If the level is too low, the oil cannot completely cover the feeding trough 811, which may cause some 3-chloropropanol and glycidol vapors to be transported to the discharge pipe, thus affecting the separation effect. At this time, when the oil level is lower than the preset safety threshold, the float 1003 descends synchronously with the oil level, and the hanging plate 1002 slides down along the outer wall of the guide rod 1001 under its own gravity. The inclined side wall of the upper end of the guide groove 1004 pushes the sliding column 1005 to move to the left. Due to the adjustment sleeve 10 06 and the gear sleeve 803 can only rotate relative to each other and cannot produce axial displacement. The sliding column 1005 will drive the adjusting sleeve 1006 to move to the left synchronously, thereby driving the gear sleeve 803 to disengage from the third gear shaft 807, automatically cutting off the discharge end transmission, pausing the discharge operation. After the oil level in the housing 1 rises back to a safe height, the float 1003 floats back to its original position, and each component returns to its original position in sequence. The gear sleeve 803 and the third gear shaft 807 resume engagement, and the discharge process automatically restarts. Similarly, when the oil level in the housing 1 is too high, the adjustment block 1003 will be cut off. When the linkage sleeve 803 of component 10 disengages from the third gear shaft 807, the sleeve 803 maintains normal transmission engagement with the first gear shaft 804 and the second gear shaft 806. The equipment automatically stops feeding to prevent the liquid level from exceeding the limit and affecting the distillation process. The entire liquid level interlocking mechanism adopts a pure mechanical linkage design with a high degree of automation. It can adaptively start and stop feeding and discharging actions in real time according to changes in liquid level. It can effectively prevent harmful vapor leakage, stabilize the separation effect, reduce manual input, and lower the overall operation and maintenance and usage costs of the equipment.

[0024] In summary, the apparatus and method for removing 3-chloropropanol and glycidol from fish oil are as follows: First, the controller starts the motor 801. The motor 801 drives the gear sleeve 803 to rotate synchronously via the transmission shaft 802. The gear sleeve 803 simultaneously meshes and drives the first gear shaft 804, the second gear shaft 806, and the third gear shaft 807 to rotate together. The second gear shaft 806 and the third gear shaft 807 drive their respective valve cores 810 to rotate continuously via the synchronous pulley group 808 and the valve stem 809. The fish oil in the hopper 4 flows into the feeding groove 811 of the upper valve core 810 and is then fed downwards with the rotation. It falls into the housing 1 through the valve shell 812, thus realizing automatic feeding. Secondly, the pump body 5 is started to draw air from the inside of the shell 1 to form a negative pressure environment. The pressure sensor 7 monitors the air pressure in the cavity in real time to accurately maintain a stable negative pressure condition. At the same time, the heat medium at a specified temperature is introduced into the heating jacket 2 through the conveying equipment to uniformly heat the bottom of the shell 1. Under the negative pressure environment, 3-chloropropanol and glycidol are fully vaporized because their boiling points are much lower than those of fish oil, thus achieving initial separation from liquid fish oil. Next, the first gear shaft 804 drives the spiral scraper 805 to rotate, pushing the fish oil to move to the right at a constant speed along the axis of the shell 1. The fish oil completes distillation and separation in a fully heated environment. During this process, the spiral scraper 805 controls the fish oil level below the first gear shaft 804, while forming a layered barrier between the fish oil on both sides and guiding the vaporized mixed gas to converge below the pump body 5. Then, the stirring component 9 works in conjunction. When it is in the lower part of the shell 1, the anti-slip wheel 904 relies on its own weight and the elastic clamping force provided by the torsion spring shaft 901 to stick tightly to the inner wall of the shell 1. As it moves with the spiral scraper 805, it rotates due to friction. Through the connecting shaft 903, the synchronous gear 905 and the driven gear 906, it drives the stirring shaft 907 and the stirring blade 908 to continuously stir the fish oil and enhance heat exchange. When the anti-slip wheel 904 moves to the upper part of the shell 1, under the action of gravity, it deflects downward through the swing arm 902 around the torsion spring shaft 901, disengaging from the inner wall of the shell 1, and the stirring mechanism automatically stops operating. Afterwards, the distilled fish oil in the shell 1 is continuously discharged through the lower right corner valve core 810 and valve shell 812 and transported to the next process. At the same time, the outer seal of the valve core 810 is tightly fitted with the inner wall of the valve shell 812 throughout the process to form a reliable dynamic seal, preventing the backflow of external air and maintaining the stability of the cavity vacuum. When the pressure sensor 7 detects an increase in the gas pressure in the cavity, the equipment promptly transports the enriched 3-chloropropanol and glycidol vaporized gas through the exhaust pipe 6 to a dedicated recovery device for centralized processing through the closed-loop control system. Finally, during operation, the float 1003, under the buoyancy of the oil, keeps the slide column 1005 in the vertical section of the guide groove 1004. The gear sleeve 803 maintains complete engagement with the first gear shaft 804, the second gear shaft 806, and the third gear shaft 807. The equipment continuously performs the entire process of feeding, conveying, and discharging. When the liquid level is lower than the preset threshold, the float 1003 descends with the liquid level, the hanging plate 1002 slides down along the guide rod 1001, and the inclined side wall at the upper end of the guide groove 1004 pushes the slide column 1005 to the left. The adjusting sleeve 1006 drives the gear sleeve 803 to disengage from the third gear shaft 807, automatically pausing the discharge. Similarly, when the liquid level is too high, the switching component 10 also links the gear sleeve 803 to disengage from the third gear shaft 807, while the first gear shaft 804 and the second gear shaft 806 maintain transmission, automatically pausing the feeding. After the liquid level returns to normal, each component resets in sequence, and the feeding and discharging automatically restart, resulting in a high degree of automation.

[0025] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A device for removing 3-chloropropanol and glycidol from fish oil, characterized in that, The device includes a housing (1) and a feeding assembly (8). A heating jacket (2) is installed at the bottom of the housing (1), and a frame (3) is installed on the outer side of the housing (1). A feeding hopper (4) is fixed at the top of the frame (3). The feeding assembly (8) is located in the middle of the housing (1), and the feeding assembly (8) includes a motor (801). The motor (801) is installed in the middle of one end of the housing (1), and the output end of the motor (801) is connected to a drive shaft (802). A gear sleeve (803) is slidably connected to the outer side of one end of the drive shaft (802), and a first gear shaft (804) is slidably connected to the inner end of the gear sleeve (803). A spiral scraper (805) is arranged on the outer side of the first gear shaft (804), a second gear shaft (806) is inserted into the middle of the gear sleeve (803), and a third gear shaft (807) is slidably connected to the other end of the gear sleeve (803). A synchronous pulley group (808) is provided at one end of the third gear shaft (807) and the second gear shaft (806), and a valve stem (809) is arranged at the output end of the synchronous pulley group (808). A valve core (810) is fixedly connected to one end of the valve stem (809), and a feeding groove (811) is opened on the outer side of the valve core (810). A valve shell (812) is slidably connected to the outer side of the valve core (810).

2. The apparatus for removing 3-chloropropanol and glycidol from fish oil according to claim 1, characterized in that, The spiral scraper (805) has a U-shaped cross section and is slidably connected to the housing (1).

3. The apparatus for removing 3-chloropropanol and glycidol from fish oil according to claim 1, characterized in that, The second gear shaft (806) is rotatably connected to the first gear shaft (804), and the first gear shaft (804) is rotatably connected to the housing (1), and the housing (1) is rotatably connected to the third gear shaft (807).

4. The apparatus for removing 3-chloropropanol and glycidol from fish oil according to claim 1, characterized in that, There are two valve housings (812), and the two valve housings (812) are located at the upper left corner and the lower right corner of the housing (1) respectively. The upper and lower ends of the valve housing (812) located at the upper left corner are connected to the feed hopper (4) and the interior of the housing (1) respectively.

5. The apparatus for removing 3-chloropropanol and glycidol from fish oil according to claim 1, characterized in that, A pump body (5) is installed at one end of the top of the housing (1), and an exhaust pipe (6) is provided on one side of the pump body (5). A pressure sensor (7) is fixed at one end of the top of the housing (1).

6. The apparatus for removing 3-chloropropanol and glycidol from fish oil according to claim 1, characterized in that, The spiral scraper (805) is equipped with an agitation assembly (9), which includes a torsion spring shaft (901). The spiral scraper (805) is rotatably connected to the torsion spring shaft (901), and one end of the torsion spring shaft (901) is fixedly connected to a swing arm (902). One end of the swing arm (902) is rotatably connected to a connecting shaft (903), and one end of the connecting shaft (903) is fixedly connected to an anti-slip wheel (904). The other end of the connecting shaft (903) is equipped with a synchronous gear (905), and one side of the synchronous gear (905) is meshed with a driven gear (906). The driven gear (906) is equipped with a stirring shaft (907), and the stirring shaft (907) is equipped with stirring blades (908) on its outer side.

7. The apparatus for removing 3-chloropropanol and glycidol from fish oil according to claim 6, characterized in that, The stirring shaft (907) is rotatably connected to the spiral scraper (805), and the axis of the stirring shaft (907) coincides with the axis of the torsion spring shaft (901).

8. The apparatus for removing 3-chloropropanol and glycidol from fish oil according to claim 1, characterized in that, A switching assembly (10) is installed at one end of the interior of the housing (1), and the switching assembly (10) includes a guide rod (1001). The guide rod (1001) is symmetrically arranged on one side of the interior of the housing (1), and a hanging plate (1002) is slidably connected to the outer side of the guide rod (1001). Floats (1003) are installed at the lower ends of both sides of the hanging plate (1002), and guide grooves (1004) are symmetrically opened on both sides of the hanging plate (1002). A sliding column (1005) is slidably connected inside the guide groove (1004), and an adjusting sleeve (1006) is fixedly connected to one end of the sliding column (1005).

9. The apparatus for removing 3-chloropropanol and glycidol from fish oil according to claim 8, characterized in that, The adjusting sleeve (1006) is rotatably connected to the toothed sleeve (803), and the central through hole of the toothed sleeve (803) is prismatic.

10. A method for removing 3-chloropropanol and glycidol from fish oil, characterized in that, The apparatus for removing 3-chloropropanol and glycidol from fish oil according to any one of claims 1-9 comprises the following steps: Step 1: Start the motor (801), drive the gear sleeve (803) to rotate synchronously through the transmission shaft (802), and the gear sleeve (803) simultaneously meshes and drives the first gear shaft (804), the second gear shaft (806) and the third gear shaft (807) to rotate together. The second gear shaft (806) and the third gear shaft (807) drive their respective valve cores (810) to rotate continuously through the synchronous pulley group (808) and the valve stem (809). The fish oil in the hopper (4) flows into the feeding groove (811) of the upper valve core (810) and is then fed to the bottom as it rotates. It falls into the housing (1) through the valve shell (812) to realize automatic feeding. Step 2: Start the pump body (5) to extract the air inside the shell (1) to form a negative pressure environment, and monitor the air pressure inside the cavity in real time through the pressure sensor (7) to accurately maintain a stable negative pressure condition. At the same time, the heat medium at a specified temperature is introduced into the heating jacket (2) through the conveying equipment to uniformly heat the bottom of the shell (1). Step 3: The first gear shaft (804) drives the spiral scraper (805) to rotate, pushing the fish oil to move to the right at a constant speed along the axial direction of the shell (1). The fish oil completes distillation and separation in a heated environment throughout the process. During this process, the stirring component (9) works in coordination. When it is in the lower part of the shell (1), the anti-slip wheel (904) relies on its own weight and the elastic clamping force provided by the torsion spring shaft (901) to stick tightly to the inner wall of the shell (1). When the spiral scraper (805) moves, it rotates due to friction. Through the connecting shaft (903), synchronous gear (905) and driven gear (906), it drives the stirring shaft (907) and stirring blade (908) to continuously stir the fish oil. When the anti-slip wheel (904) moves to the upper part of the shell (1), it deflects downward through the swing arm (902) around the torsion spring shaft (901) under the action of gravity, and disengages from the inner wall of the shell (1). The stirring mechanism automatically stops operating. Step 4: The fish oil distilled in the shell (1) is continuously discharged through the lower right corner valve core (810) and valve shell (812) and transported to the next process. When the pressure sensor (7) detects that the gas pressure in the cavity increases, the equipment promptly transports the enriched 3-chloropropanol and glycidol vaporized gas through the exhaust pipe (6) to the special recycling equipment for centralized processing through the closed-loop control system. Step 5: Under the buoyancy of the oil, the float (1003) maintains the sliding column (1005) in the vertical section of the guide groove (1004). The gear sleeve (803) maintains complete engagement with the first gear shaft (804), the second gear shaft (806), and the third gear shaft (807). The equipment continues to perform the entire process of feeding, conveying, and discharging. When the liquid level is lower than the preset threshold, the float (1003) descends with the liquid level, and the hanging plate (1002) slides down along the guide rod (1001). 004) The upper inclined sidewall pushes the sliding column (1005) to the left, and the adjusting sleeve (1006) drives the toothed sleeve (803) to disengage from the third toothed shaft (807), automatically pausing the discharge. Similarly, when the liquid level is too high, the switching component (10) also links the toothed sleeve (803) to disengage from the third toothed shaft (807), while the first toothed shaft (804) and the second toothed shaft (806) maintain transmission, automatically pausing the feeding. After the liquid level returns to normal, each component resets in sequence, and the feeding and discharging restart automatically.

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