Fish oil decolorization device and decolorization method

Abstract

The invention discloses a fish oil decoloring device, belongs to the technical field of grease decoloring, and solves the problem that an existing decoloring agent cannot be stably separated from fish oil, the device comprises an upper barrel, a lower barrel, a conical material receiving plate and a stirring piece, the lower barrel is installed at an opening in the bottom end of the upper barrel, the conical material receiving plate is installed between the upper barrel and the lower barrel, and the stirring piece is installed on the conical material receiving plate. A stirring part is mounted in the upper cylinder, a sealing mechanism for ensuring sealing in the decolorizing process is mounted in the lower cylinder, the sealing mechanism comprises a sealing sliding plate and sealing rods, the sealing sliding plate is mounted in the lower cylinder in a sliding manner, and a plurality of groups of sealing rods are mounted on the surface of the sealing sliding plate; a discharging groove for discharging processed fish oil is formed in the conical material receiving plate, the sealing rod is in sliding connection with the discharging groove and controls opening and closing of the discharging groove of the conical material receiving plate, and a screening mechanism is installed in the conical material receiving plate and can extrude a decolorizing agent and extrude out the fish oil adsorbed in the decolorizing agent, so that separation of the fish oil and the decolorizing agent is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of oil decolorization, and in particular relates to a fish oil decolorization device and a decolorization method. Background Art

[0002] Fish oil is a kind of oil extracted from fatty fish. It is rich in eicosapentaenoic acid, docosahexaenoic acid and various n-3 polyunsaturated fatty acids. Fish oil is now a material that people often take for body care. Fish oil needs to go through multiple steps during processing. The main purpose of decolorization is to remove pigments and other impurities in fish oil to improve its purity and stability. Fish oil decolorization usually adopts adsorption method. Commonly used decolorizers include activated white clay, activated carbon, diatomaceous earth, etc. These decolorizers remove pigments and other impurities in fish oil through adsorption, thereby improving the color and transparency of fish oil.

[0003] When using the existing fish oil decolorization device, fish oil is put into the tank, and then the decolorizer is put into the tank. The decolorizer adsorbs the impurities in the fish oil by stirring, and removes the impurities and pigments in the fish oil. However, there are certain problems in actual use. Specifically, after the decolorizer adsorbs the impurities in the fish oil, the decolorizer and the fish oil cannot be stably separated, and a certain amount of fish oil will remain in the decolorizer after separation, resulting in a waste of resources and affecting the overall work quality. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In order to solve the problems raised in the above background technology, the present invention adopts the following technical solutions.

[0006] A fish oil decolorization device and decolorization method, comprising an upper cylinder, a lower cylinder, a conical material receiving plate and a stirring member, wherein the lower cylinder is installed at the bottom opening of the upper cylinder, the conical material receiving plate is installed between the upper cylinder and the lower cylinder, the stirring member is installed in the upper cylinder, and a sealing mechanism for ensuring the sealing of the decolorization process is installed in the lower cylinder, the sealing mechanism comprises a sealing slide plate and a sealing rod, a sealing slide plate is slidably installed inside the lower cylinder, a plurality of sealing rods are installed on the surface of the sealing slide plate, and a discharge groove for discharging processed fish oil is opened in the conical material receiving plate, and the sealing rod is slidably connected to the discharge groove.

[0007] As a preferred technical solution of the present invention, the sealing mechanism also includes a first screw, a guide rod, a driving motor and a main gear. The first screw is rotatably installed at the bottom end of the conical material receiving plate, and the guide rod is fixedly installed at the bottom end of the conical material receiving plate. The guide rod is parallel to the first screw. A driving motor is installed in the lower cylinder. The output end of the driving motor is connected to the first screw, the first screw is threadedly engaged with the sealing slide, the guide rod is slidably connected to the sealing slide, the top end of the first screw enters the conical material receiving plate, and the main gear is installed at the end of the first screw.

[0008] As a preferred technical solution of the present invention, a plurality of groups of sealing rods are provided, and the sealing rods have different lengths according to the different positions at which they are installed on the surface of the sealing slide plate.

[0009] As a preferred technical solution of the present invention, the device also includes a screening mechanism, which includes a second screw rod, a movable end, a connecting frame, a deflection side plate and a mounting base. The mounting base is fixedly mounted on the surface of the conical receiving plate, the second screw rod is rotatably mounted on the upper surface of the mounting base, the movable end is threadedly mounted on the outer side of the second screw rod, and a connecting frame is mounted on the side of the mobile end. Multiple groups of deflection side plates are arranged on the surface of the conical receiving plate, the deflection side plates are rotatably connected to the mounting base, and the deflection side plates are connected to the connecting frame.

[0010] As a preferred technical solution of the present invention, the screening mechanism includes a filter mesh and a meshing gear. The inner wall of the deflection side plate is provided with a filter mesh for filtering the decolorizing agent. The end of the second screw rod is equipped with a meshing gear, which is meshed and connected with the main gear.

[0011] As a preferred technical solution of the present invention, the connecting frame is an umbrella frame, and a plurality of groups of deflection side panels are provided, and the plurality of groups of deflection side panels enclose a conical bin.

[0012] As a preferred technical solution of the present invention, the device also includes a circulation mechanism, which includes a partition plate, a closing plate and a linkage rod. A partition plate is installed inside the upper cylinder, and multiple groups of circulation grooves are opened on the partition plate. A linkage rod is rotatably installed in the circulation groove, and a closing plate is installed outside the linkage rod.

[0013] As a preferred technical solution of the present invention, the circulation mechanism also includes a first bevel gear and a second bevel gear, the first bevel gear is installed on the end of the linkage rod, the second screw rod enters the interior of the partition plate, the second bevel gear is installed on the top of the second screw rod, and the second bevel gear is meshingly connected with the first bevel gear.

[0014] As a preferred technical solution of the present invention, a delivery port for delivering a decolorizing agent is provided on the surface of the upper cylinder, and a discharge pipe for discharging fish oil is installed on the side wall of the lower cylinder.

[0015] A fish oil decolorization method comprises the following steps: S1, adding decolorizing agent and fish oil, inputting the fish oil and decolorizing agent into the upper cylinder, and then closing the introduction port, and then stirring and mixing the fish oil and decolorizing agent through the operation of the stirring element, so that the decolorizing agent can absorb impurities and pigments in the fish oil; S2, the flow of fish oil and decolorizing agent, the rotation of the second screw, the second bevel gear meshes with the first bevel gear, and the closing plate rotates under the drive of the linkage rod, changing the angle of the closing plate in the flow slot, so that the fish oil and decolorizing agent pass through the partition plate and flow into the conical receiving plate; S3, screening and extrusion, through the operation of the whole sealing mechanism, the meshing gear is meshed with the main gear, driving the second screw to rotate, at this time the moving end moves along the thread outside the second screw, the moving end moves along the length direction of the second screw, the moving end pulls one end of the connecting frame, the angle of the connecting frame as a whole changes, the deflection side plate is pulled to deflect toward the side close to the second screw, multiple groups of deflection side plates are synchronously enclosed, the fish oil and decolorant in the conical receiving plate are squeezed, the fish oil passes through the filter gauze and the discharge groove on the conical receiving plate and flows into the lower cylinder, and the decolorant is concentrated and collected inside the deflection side plate, and the deflection side plate squeezes the decolorant to prevent the fish oil from remaining in the decolorant; S4, output, by driving the motor to rotate the first screw rod, at which time the sealing slide plate moves along the outside of the first screw rod, adjusting the position of the entire sealing slide plate, driving the sealing rod to disengage from the discharge groove in the conical receiving plate, so that the fish oil in the conical receiving plate flows into the surface of the sealing slide plate; S5, fish oil output: the fish oil flows along the surface of the sealing slide under the action of gravity, mainly concentrated at the end of the sealing slide with a lower slope, and then directly discharged through the discharge pipe, completing the collection and decolorization of the fish oil.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by setting a sealing mechanism, the position of the sealing slide plate can be moved up and down, the position and depth of the sealing rod in the discharge groove can be adjusted, and with the movement of the sealing slide plate, the inlet of the discharge pipe can be closed or opened, so as to facilitate the outflow of the decolorized fish oil. The installation of the screening mechanism can screen and squeeze the fish oil and decolorizing agent inside the conical receiving plate through the cooperation of the connecting frame and the deflection side plate, squeeze out the fish oil in the decolorizing agent, and allow the decolorized fish oil to flow out stably. Finally, through the circulation mechanism, when the fish oil and the decolorizing agent are not completely mixed, the partition plate is in a closed state as a whole. When the fish oil and the decolorizing agent are mixed, the angle of the sealing plate can be adjusted to allow the fish oil to flow into the conical receiving plate at the lower end while separating the decolorizing agent with larger particles, thereby achieving stable and efficient decolorization of the fish oil and separation of the fish oil and the decolorizing agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the external structure of the upper cylinder and the lower cylinder of the present invention.

[0018] Figure 2 It is a schematic diagram of the internal structure of the upper cylinder and the lower cylinder of the present invention.

[0019] Figure 3 It is a schematic diagram of the sealing mechanism structure in the present invention.

[0020] Figure 4 It is a front view of the sealing mechanism structure in the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the screening mechanism in the present invention.

[0022] Figure 6 It is a schematic diagram of the structure of the screening mechanism and the circulation mechanism in the present invention.

[0023] Figure 7 It is a schematic diagram of the circulation mechanism structure in the present invention.

[0024] Figure 8 It is a schematic diagram of the stirring member structure in the present invention.

[0025] The corresponding relationship between the illustrations and component names in the figure is as follows: 1. Upper cylinder; 2. Lower cylinder; 3. Conical receiving plate; 4. Stirring element; 5. Sealing mechanism; 51. Sealing slide plate; 52. Sealing rod; 53. First screw rod; 54. Guide rod; 55. Driving motor; 56. Main gear; 6. Screening mechanism; 61. Second screw rod; 62. Moving end; 63. Connecting frame; 64. Deflection side plate; 65. Mounting base; 66. Filter screen; 67. Meshing gear; 7. Circulation mechanism; 71. Partition plate; 72. Closing plate; 73. Linkage rod; 74. First bevel gear; 75. Second bevel gear. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0029] Depend on Figure 1 and Figure 2 As shown, it is a schematic structural diagram of the fish oil decolorization device in this embodiment, the device comprises an upper cylinder 1, a lower cylinder 2, a conical material receiving plate 3 and a stirring member 4, the lower cylinder 2 is installed at the bottom opening of the upper cylinder 1, the conical material receiving plate 3 is installed between the upper cylinder 1 and the lower cylinder 2, and a discharge groove for discharging the processed fish oil is opened in the conical material receiving plate 3, the stirring member 4 is installed in the upper cylinder 1, and a sealing mechanism 5 for ensuring the sealing of the decolorization process is installed in the lower cylinder 2, the surface of the upper cylinder 1 is provided with a delivery port for delivering the decolorant, and a discharge pipe for discharging the fish oil is installed on the side wall of the lower cylinder 2.

[0030] During use, fish oil and decolorant are put into the upper cylinder 1, and then the fish oil and decolorant in the upper cylinder 1 are mixed through the operation of the stirring member 4, and then the decolorant adsorbs the pigment and impurities in the fish oil to achieve the purpose of decolorizing the fish oil.

[0031] By the attached Figure 3 and Figure 4 As shown, it is a structural schematic diagram of the sealing mechanism 5 in this embodiment, the sealing mechanism 5 includes a sealing slide 51, a sealing rod 52, a first screw rod 53, a guide rod 54, a driving motor 55 and a main gear 56, the sealing slide 51 is slidably installed inside the lower cylinder 2, and a plurality of sealing rods 52 are installed on the surface of the sealing slide 51, and a plurality of sealing rods 52 are provided in total, and the sealing rods 52 have different lengths according to the different positions on the surface of the sealing slide 51 on which they are installed, the sealing rods 52 are slidably connected to the discharge groove, the first screw rod 53 is rotatably installed at the bottom end of the conical receiving plate 3, and a guide rod 54 is fixedly installed at the bottom end of the conical receiving plate 3, and the guide rod 54 is parallel to the first screw rod 53, a driving motor 55 is installed in the lower cylinder 2, and the output end of the driving motor 55 is connected to the first screw rod 53, the first screw rod 53 is threadedly meshed with the sealing slide 51, the guide rod 54 is slidably connected to the sealing slide 51, the top end of the first screw rod 53 enters the conical receiving plate 3, and the end of the first screw rod 53 is installed with a main gear 56.

[0032] During use, the driving motor 55 runs, driving the first screw rod 53 to rotate. At this time, the sealing slide 51 moves along the length direction of the first screw rod 53, and the stability of the movement of the sealing slide 51 is ensured by the guide rod 54 during the movement. When the sealing slide 51 moves to the side away from the conical receiving plate 3, the sealing rod 52 disengages from the discharge groove in the conical receiving plate 3. At this time, the fish oil in the conical receiving plate 3 will pass through the discharge groove and flow into the surface of the sealing slide 51, and the fish oil will flow along the surface of the sealing slide 51 and flow to one side of the discharge pipe. The fish oil will flow out through the discharge pipe to realize the collection of fish oil.

[0033] By the attached Figure 5 and Figure 6 As shown, it is a structural schematic diagram of the screening mechanism 6 in this embodiment. The device also includes a screening mechanism 6, which includes a second screw rod 61, a movable end 62, a connecting frame 63, a deflection side plate 64, a mounting base 65, a filter screen 66 and a meshing gear 67. The mounting base 65 is fixedly mounted on the surface of the conical receiving plate 3, and the second screw rod 61 is rotatably mounted on the upper surface of the mounting base 65. The movable end 62 is threadedly mounted on the external surface of the second screw rod 61, and a connecting frame 63 is mounted on the side of the movable end 62. A plurality of groups of deflection side plates 64 are arranged on the surface of the conical receiving plate 3, and the deflection side plates 64 are rotatably connected to the mounting base 65, and the deflection side plates 64 are connected to the connecting frame 63. A filter screen 66 for filtering the decolorizing agent is provided on the inner wall of the deflection side plate 64, and a meshing gear 67 is mounted on the end of the second screw rod 61, and the meshing gear 67 is meshedly connected to the main gear 56.

[0034] When the first screw rod 53 rotates during use, the main gear 56 at the end of the first screw rod 53 meshes with the meshing gear 67, and the second screw rod 61 moves in a different moving direction of the sealing slide plate 51. When the sealing slide plate 51 moves downward, the movable end 62 moves upward as a whole, so that the sealing slide plate 51 releases the seal of the conical receiving plate 3, and the movable end 62 drives the angle of the connecting skeleton 63 to change, driving multiple groups of deflection side plates 64 to deflect toward the middle end at the same time, and the fish oil and decolorant in the conical receiving plate 3 are screened. The fish oil passes through the filter mesh 66 in the deflection side plate 64 and flows out directly, while the fish oil is concentrated and input into the conical bin enclosed by the deflection side plate 64, and the deflection side plate 64 will squeeze the decolorant, squeeze out the fish oil adsorbed in the decolorant, and reduce the waste of resources.

[0035] By the attached Figure 7As shown, it is a structural schematic diagram of the circulation mechanism 7 in this embodiment. The device also includes a circulation mechanism 7, and the circulation mechanism 7 includes a partition plate 71, a closing plate 72, a linkage rod 73, a first bevel gear 74 and a second bevel gear 75. The partition plate 71 is installed inside the upper cylinder 1, and a plurality of groups of circulation grooves are provided on the partition plate 71. The linkage rod 73 is rotatably installed in the circulation groove, and the closing plate 72 is installed outside the linkage rod 73. The first bevel gear 74 is installed at the end of the linkage rod 73, and the second screw rod 61 enters the interior of the partition plate 71. The second bevel gear 75 is installed at the top of the second screw rod 61, and the second bevel gear 75 is meshed and connected with the first bevel gear 74.

[0036] During use, when the second screw rod 61 rotates, the second bevel gear 75 at the top of the second screw rod 61 rotates synchronously with the second screw rod 61, and the second bevel gear 75 engages with the first bevel gear 74 to provide power for the rotation of the multiple groups of linkage rods 73. At this time, with the rotation of the linkage rods 73, the overall angle of the closing plate 72 changes, and there is a spacing and gap between the circulation groove and the closing plate 72. The fish oil at the upper end will pass through the gap and flow into the inside of the conical receiving plate 3, so as to perform preliminary separation of the decolorizing agent in the fish oil.

[0037] A fish oil decolorization method comprises the following steps: S1, adding decolorizing agent and fish oil, inputting the fish oil and decolorizing agent into the upper cylinder 1, and then closing the introduction port, and then stirring and mixing the fish oil and decolorizing agent through the operation of the stirring member 4, so that the decolorizing agent can adsorb impurities and pigments in the fish oil; S2, the flow of fish oil and decolorizing agent, the rotation of the second screw 61, the second bevel gear 75 and the first bevel gear 74 are meshed, and the closing plate 72 is driven by the linkage rod 73 to rotate, changing the angle of the closing plate 72 in the flow groove, so that the fish oil and decolorizing agent pass through the partition plate 71 and flow into the conical receiving plate 3; S3, screening and extrusion, through the operation of the sealing mechanism 5 as a whole, the meshing gear 67 is meshed with the main gear 56, driving the second screw rod 61 to rotate, at this time, the movable end 62 moves along the thread outside the second screw rod 61, and the movable end 62 moves along the length direction of the second screw rod 61, and the movable end 62 pulls one end of the connecting frame 63, and the angle of the connecting frame 63 as a whole changes, pulling the deflection side plate 64 to deflect toward the side close to the second screw rod 61, and multiple groups of deflection side plates 64 are synchronously enclosed to squeeze the fish oil and decolorant in the conical receiving plate 3, and the fish oil passes through the filter gauze 66 and the discharge groove on the conical receiving plate 3 and flows into the lower cylinder 2, and the decolorant is concentrated and collected inside the deflection side plate 64, and the deflection side plate 64 squeezes the decolorant to prevent the fish oil from remaining in the decolorant; S4, output, by driving the motor 55, the first screw rod 53 is rotated, and the sealing plate 51 is moved along the outside of the first screw rod 53, the overall position of the sealing plate 51 is adjusted, and the sealing rod 52 is driven to disengage from the discharge groove in the conical receiving plate 3, so that the fish oil in the conical receiving plate 3 flows into the surface of the sealing plate 51; S5, fish oil output: the fish oil flows along the surface of the sealing slide plate 51 under the action of gravity, mainly concentrated at the end of the sealing slide plate 51 with a lower slope, and then directly discharged through the discharge pipe, completing the collection and decolorization of the fish oil.

[0038] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A fish oil decolorizing device, comprising an upper cylinder (1), a lower cylinder (2), a conical material receiving plate (3) and a stirring member (4), wherein the lower cylinder (2) is installed at the bottom opening of the upper cylinder (1), the conical material receiving plate (3) is installed between the upper cylinder (1) and the lower cylinder (2), and the stirring member (4) is installed in the upper cylinder (1), characterized in that: A sealing mechanism (5) is installed in the lower cylinder (2) to ensure sealing during the decolorization process. The sealing mechanism (5) comprises a sealing slide plate (51) and a sealing rod (52). The sealing slide plate (51) is slidably installed inside the lower cylinder (2). A plurality of groups of sealing rods (52) are installed on the surface of the sealing slide plate (51). A discharge groove for discharging processed fish oil is provided in the conical receiving plate (3). The sealing rod (52) is slidably connected to the discharge groove.

2. The fish oil decolorization device according to claim 1, characterized in that: The sealing mechanism (5) further comprises a first screw rod (53), a guide rod (54), a driving motor (55) and a main gear (56); the first screw rod (53) is rotatably mounted on the bottom end of the conical material receiving plate (3); the guide rod (54) is fixedly mounted on the bottom end of the conical material receiving plate (3); the guide rod (54) is parallel to the first screw rod (53); a driving motor (55) is mounted in the lower cylinder (2); the output end of the driving motor (55) is connected to the first screw rod (53); the first screw rod (53) is threadedly engaged with the sealing slide plate (51); the guide rod (54) is slidably connected to the sealing slide plate (51); the top end of the first screw rod (53) enters the conical material receiving plate (3); and the main gear (56) is mounted on the end of the first screw rod (53).

3. The fish oil decolorization device according to claim 1, characterized in that: A total of multiple groups of the sealing rods (52) are provided, and the sealing rods (52) have different lengths according to different positions at which they are installed on the surface of the sealing slide plate (51).

4. The fish oil decolorization device according to claim 2, characterized in that: The device further comprises a screening mechanism (6), the screening mechanism (6) comprising a second screw rod (61), a movable end (62), a connecting frame (63), a deflection side plate (64) and a mounting base (65); the mounting base (65) is fixedly mounted on the surface of the conical material receiving plate (3); the second screw rod (61) is rotatably mounted on the upper surface of the mounting base (65); the movable end (62) is threadedly mounted on the outer surface of the second screw rod (61); the connecting frame (63) is mounted on the side of the movable end (62); a plurality of groups of deflection side plates (64) are arranged on the surface of the conical material receiving plate (3); the deflection side plates (64) are rotatably connected to the mounting base (65); and the deflection side plates (64) are connected to the connecting frame (63).

5. The fish oil decolorization device according to claim 4, characterized in that: The screening mechanism (6) comprises a filter mesh (66) and a meshing gear (67). The inner wall of the deflection side plate (64) is provided with a filter mesh (66) for filtering the decolorizing agent. The end of the second screw rod (61) is provided with a meshing gear (67). The meshing gear (67) is meshedly connected with the main gear (56).

6. The fish oil decolorization device according to claim 5, characterized in that: The connecting frame (63) is an umbrella frame, and a plurality of groups of deflection side panels (64) are provided, and the plurality of groups of deflection side panels (64) enclose a conical bin.

7. The fish oil decolorization device according to claim 4, characterized in that: The device further comprises a circulation mechanism (7), the circulation mechanism (7) comprising a partition plate (71), a closing plate (72) and a linkage rod (73), the partition plate (71) being installed inside the upper cylinder (1), a plurality of groups of circulation slots being provided on the partition plate (71), a linkage rod (73) being rotatably installed inside the circulation slot, and a closing plate (72) being installed outside the linkage rod (73).

8. The fish oil decolorization device according to claim 7, characterized in that: The circulation mechanism (7) further comprises a first bevel gear (74) and a second bevel gear (75); the first bevel gear (74) is mounted on the end of the linkage rod (73); the second screw rod (61) enters the interior of the partition plate (71); the second bevel gear (75) is mounted on the top end of the second screw rod (61); the second bevel gear (75) is meshingly connected with the first bevel gear (74).

9. The fish oil decolorization device according to claim 1, characterized in that: The surface of the upper cylinder (1) is provided with a delivery port for delivering a decolorizing agent, and a discharge pipe for discharging fish oil is installed on the side wall of the lower cylinder (2).

10. A method for decolorizing fish oil, using the decolorizing device according to any one of claims 1 to 9, characterized in that: The steps include: S1, adding a decolorizing agent and fish oil, inputting the fish oil and the decolorizing agent into the upper cylinder (1), and then closing the introduction port, and then stirring and mixing the fish oil and the decolorizing agent through the operation of the stirring element (4), so that the decolorizing agent can absorb impurities and pigments in the fish oil; S2, the flow of the fish oil and the decolorizing agent, the rotation of the second screw (61), the meshing of the second bevel gear (75) and the first bevel gear (74), at which time the closing plate (72) rotates under the drive of the linkage rod (73), changing the angle of the closing plate (72) in the flow groove, so that the fish oil and the decolorizing agent pass through the partition plate (71) and flow into the conical receiving plate (3); S3, screening and extrusion, through the overall operation of the sealing mechanism (5), the meshing gear (67) is meshed with the main gear (56), driving the second screw rod (61) to rotate, and at this time, the movable end (62) moves along the outer thread of the second screw rod (61), and the movable end (62) moves along the length direction of the second screw rod (61). The movable end (62) pulls one end of the connecting frame (63), and the overall angle of the connecting frame (63) changes. The deflection side plate (64) is pulled to deflect toward the side close to the second screw rod (61), and the plurality of deflection side plates (64) are synchronously enclosed to squeeze the fish oil and decolorant in the conical receiving plate (3), so that the fish oil flows into the lower cylinder (2) through the filter screen (66) and the discharge groove on the conical receiving plate (3), while the decolorant is collected in the deflection side plate (64), and the deflection side plate (64) squeezes the decolorant to prevent the fish oil from remaining in the decolorant; S4, output, by driving the motor (55) to rotate the first screw rod (53), at which time the sealing slide plate (51) moves along the outside of the first screw rod (53), adjusting the overall position of the sealing slide plate (51), driving the sealing rod (52) to disengage from the discharge groove in the conical receiving plate (3), so that the fish oil in the conical receiving plate (3) flows onto the surface of the sealing slide plate (51); S5, fish oil output: the fish oil flows along the surface of the sealing slide plate (51) under the action of gravity, mainly concentrated at the end of the sealing slide plate (51) with a lower slope, and then directly discharged through the discharge pipe, completing the collection and decolorization of the fish oil.

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