A lignan protection type decoloring device for refining sesame oil

Abstract

The application discloses a lignan protection type decoloring device for refining sesame oil and belongs to the technical field of oil processing. The device comprises a mounting base, a main body mechanism and an auxiliary mechanism arranged on the mounting base. The main body mechanism comprises a mixing tank, two rotating cylinders are arranged in the mixing tank, a stirring shaft penetrating through the rotating cylinders is designed at a differential speed with the rotating cylinders, and a plate stirring paddle is arranged on the shaft. A driving rotating wheel and a driven transmission wheel are arranged outside the mixing tank, and intermittent rotation of the stirring shaft is realized by meshing of a gear block and a gear groove. One end of a conveying pipe of the auxiliary mechanism is connected to a flange for introducing a decoloring liquid, and the decoloring liquid is uniformly sprayed through an annular shunt pipe and a spray head. The device enhances the turbulence by differential rotation of the stirring shaft and the rotating cylinders, reduces the shear force by intermittent transmission, makes the material roll slowly in the cylinder, and sequentially discharges the material through the limited flow gap between the inner wall of the rotating cylinder and the paddle blade with time, so that lignan thermal oxidation loss is avoided, the problems of uneven decoloring and low efficiency of traditional equipment are solved, and active components of sesame oil are effectively reserved.

Description

Technical Field

[0001] This invention relates to the field of oil refining and processing technology, and in particular to a lignan-protective decolorization device for sesame oil refining. Background Technology

[0002] Sesame oil is highly valued for its unique flavor and rich nutritional content. Lignans (such as sesamin and sesamolin) are important functional active ingredients with various physiological benefits, including antioxidant and anti-inflammatory properties. In the refining process of sesame oil, decolorization is a crucial step that determines the oil's color and quality. Adsorbents such as activated clay are typically used to remove pigments and impurities from the oil. Current decolorization processes mostly employ continuous mixing tanks, where a high-speed rotating impeller ensures thorough mixing of the decolorizing agent with the crude oil.

[0003] However, in actual production, high stirring speeds are often used to achieve high decolorization efficiency, leading to two prominent problems: First, the intense mechanical shearing force and localized high temperatures generated during stirring easily induce oxidative degradation or isomerization of heat-sensitive lignans in sesame oil, resulting in the loss of functional components. Second, traditional spraying methods struggle to instantly and uniformly disperse the decolorizing agent in the viscous oil phase, easily leading to localized excessively high or low concentrations, which not only reduces adsorption efficiency but may also introduce new impurities. Furthermore, existing discharge methods mostly involve one-time centralized discharge, making it difficult to precisely control the residence time of materials in the decolorization tank, resulting in insufficient decolorization or overheating of some materials. Therefore, there is an urgent need for a decolorization device that can achieve uniform mixing under mild conditions, controllable discharge, and effectively protect lignans. Summary of the Invention

[0004] To overcome the above shortcomings, the present invention provides a lignan-protective decolorization device for sesame oil refining, which aims to improve the problems of lignan thermal oxidation loss and uneven decolorization that are easily caused by existing decolorization equipment during processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A lignan-protective decolorization device for sesame oil refining includes a mounting base for support, a main body mechanism mounted on top of the mounting base, and an auxiliary mechanism mounted outside the main body mechanism. The main structure includes a mixing tank for bearing loads. Inside the mixing tank, two rotating cylinders are rotatably arranged. Each rotating cylinder has two sets of rotating support frames fitted on its outer ring surfaces at both ends. On the outer ring surfaces of the rotating cylinders on the opposite side of each pair of rotating support frames, two sets of pulley rings are fitted. A stirring shaft runs through the middle of each of the two rotating cylinders in a left-right direction. Two sets of plate-type stirring paddles are installed on the left and right sides of the stirring shaft. Two sets of driving pulleys are correspondingly arranged perpendicular to the upper ends of the two sets of pulley rings. A rotating main shaft runs through the middle of the two sets of driving pulleys in a left-right direction. A drive wheel is arranged in the middle of the rotating main shaft. A driven transmission wheel is installed in the middle of the stirring shaft perpendicular to the lower end of the drive wheel.

[0006] As a further description of the above technical solution: the rotating spindle extends through the left and right side walls of the mixing tank at both ends in the horizontal direction, and deep groove ball bearings are installed at both ends of the rotating spindle through bearing seats. The deep groove ball bearing on the left side is connected to a horizontally arranged drive motor through a coupling, and a controller is installed on the front side of the mixing tank.

[0007] As a further description of the above technical solution: multiple gear blocks are installed on the outer ring surface of the driving wheel, and multiple gear grooves are opened on the outer ring surface of the driven transmission wheel. The meshing transmission ratio of the gear blocks and gear grooves is at least 1:3 to achieve intermittent transmission.

[0008] As a further description of the above technical solution: both sets of plate-type stirring paddles are inclined 1 / 4 arc plates, and each arc plate has semi-circular grooves equidistantly opened on its surface, and the two sets of plate-type stirring paddles are installed symmetrically on the stirring shaft.

[0009] As a further description of the above technical solution: the two sets of pulley rings and the two sets of drive pulleys are connected by belt drive to realize the rotation of the rotating cylinder.

[0010] As a further description of the above technical solution: each of the rotating cylinders has screen holes evenly distributed on its side wall and outer peripheral surface, and the diameter of the screen holes on the side wall is larger than the diameter of the screen holes on the outer peripheral surface, so as to facilitate the discharge of the decolorized material.

[0011] As a further description of the above technical solution: the mixing tank has a hexagonal structure, with a main feed pipe installed in the middle of its upper end. The lower end of the main feed pipe is connected to two symmetrically installed L-shaped conveying pipes, and a discharge pipe is installed at the lower front side of the mixing tank.

[0012] As a further description of the above technical solution: there is a gap between the inner wall of the rotating cylinder and the outer edge of the plate-type stirring paddle, and the gap is smaller than the sieve aperture; during operation, the material is discharged in an orderly manner through the sieve aperture after being restricted by the gap, thereby realizing dynamic decolorization and guided discharge.

[0013] As a further description of the above technical solution: the auxiliary mechanism includes a plurality of annular diverter pipes arranged at equal intervals on the outer wall of the mixing tank, and a plurality of nozzles are connected to the inner wall of each annular diverter pipe.

[0014] As a further description of the above technical solution: the end of each nozzle away from the annular diverter pipe penetrates through the outer wall of the mixing tank, the lower ends of multiple annular diverter pipes are connected in series through a conveying pipe, and one end of the conveying pipe is connected to an inlet flange for uniformly spraying the decolorizing agent through the annular structure.

[0015] The present invention has the following beneficial effects: 1. In this invention, by adopting a design that combines the differential speed operation of the stirring shaft and the rotating cylinder, and utilizing the intermittent meshing transmission between the driving wheel and the driven transmission wheel, the stirring shaft pauses after rotating at a certain angle, giving the material sufficient time for adsorption reaction. This effectively reduces mechanical shear force and frictional heat generation. Combined with the semi-circular groove design on the surface of the plate-type stirring paddle, a gentle laminar flow is formed when turning the material, avoiding the oxidative breakage of lignans and achieving physical protection of heat-sensitive active ingredients.

[0016] 2. In this invention, by utilizing a specific flow-limiting gap between the inner wall of the rotating cylinder and the outer edge of the plate-type stirring paddle, and in conjunction with the sieve hole layout of different apertures on the rotating cylinder body, a guided discharge mechanism that moves over time is constructed, so that the material slowly rolls and moves downward in a thin layer inside the cylinder. This not only extends the decolorization process, but also ensures that the decolorizing agent is sprayed evenly with 360-degree coverage through the annular diversion pipe and the nozzle, greatly improving the contact efficiency between the adsorbent and the oil, and solving the problem of uneven decolorization in traditional equipment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a lignan-protected decolorizing device for sesame oil refining proposed in this invention; Figure 2 This is a cross-sectional structural diagram of a lignan-protected decolorizing device for sesame oil refining proposed in this invention; Figure 3 This is a schematic diagram of the rotating cylinder installation structure of a lignan-protected decolorizing device for sesame oil refining proposed in this invention; Figure 4 for Figure 3 Enlarged view of the left side of the middle section; Figure 5 This is a schematic diagram of the auxiliary mechanism of a lignan-protected decolorizing device for sesame oil refining proposed in this invention; Figure 6 This is a schematic diagram of the belt drive structure of a lignan-protective decolorizing device for sesame oil refining proposed in this invention; Figure 7This is a schematic diagram of the plate-type stirring paddle installation structure of a lignan-protected decolorizing device for sesame oil refining proposed in this invention. Figure 8 This is a schematic diagram of the impurity mixing support structure of a lignan-protected decolorizing device for sesame oil refining proposed in this invention.

[0018] Legend: 1. Mounting base; 2. Main structure; 201. Mixing tank; 202. Rotating cylinder; 203. Rotating support frame; 204. Belt ring; 205. Stirring shaft; 206. Plate stirring paddle; 207. Drive pulley; 208. Rotating main shaft; 209. Drive wheel; 210. Driven transmission wheel; 211. Deep groove ball bearing; 212. Drive motor; 213. Gear block; 214. Gear groove; 215. Semi-circular arc groove; 216. Belt; 217. Main feed pipe; 218. L-shaped conveying pipe; 219. Discharge pipe; 3. Auxiliary mechanism; 301. Annular diverter pipe; 302. Nozzle; 303. Conveying pipe; 304. Connection flange; 4. Controller; Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Reference Figures 1-8 An embodiment of a lignan-protected decolorizing device for sesame oil refining provided by the present invention: A lignan-protective decolorization device for sesame oil refining includes a mounting base 1 for supporting the main body 2, an auxiliary mechanism 3 mounted on the outside of the main body 2. As a further improvement to the above technical solution: the main body 2 includes a mixing tank 201 for bearing a load. Two rotating cylinders 202 are rotatably arranged inside the mixing tank 201. Two sets of rotating support frames 203 are fitted onto the outer annular surfaces of both ends of each rotating cylinder 202. Each rotating support frame 203 consists of a bearing seat and an annular groove embedded in the side wall of the mixing tank 201. Two sets of pulley rings 20 are fitted onto the outer annular surface of the rotating cylinder 202 on the side furthest from each other in each pair of rotating support frames 203. 4. A stirring shaft 205 runs through the middle of both rotating cylinders 202 in the left-right direction. Two sets of plate-type stirring paddles 206 are installed on both sides of the stirring shaft 205. Two sets of drive pulleys 207 are respectively arranged perpendicular to the upper end of the two sets of pulley rings 204. A rotating main shaft 208 runs through the middle of the two sets of drive pulleys 207 in the left-right direction. A drive wheel 209 is arranged in the middle of the rotating main shaft 208. A driven transmission wheel 210 is installed in the middle of the stirring shaft 205 perpendicular to the lower end of the drive wheel 209.

[0021] The rotating spindle 208 extends horizontally through the left and right side walls of the mixing tank 201. Deep groove ball bearings 211 are installed at the left and right ends of the rotating spindle 208 via bearing seats. The deep groove ball bearing 211 on the left side is connected to a horizontally positioned drive motor 212 via a coupling. A controller 4 is installed on the front side of the mixing tank 201.

[0022] Multiple gear blocks 213 are mounted on the outer ring surface of the drive wheel 209, and multiple gear grooves 214 are opened on the outer ring surface of the driven transmission wheel 210. The meshing transmission ratio of the gear blocks 213 and the gear grooves 214 is at least 1:3 to achieve intermittent transmission.

[0023] Both sets of plate-type agitators 206 are inclined 1 / 4 arc plates, and semi-circular grooves 215 are equally spaced on the surface of each arc plate. The two sets of plate-type agitators 206 are installed symmetrically on the agitator shaft 205.

[0024] Two sets of pulley rings 204 and two sets of drive pulleys 207 are connected by belt 216 to realize the rotation of the rotating drum 202; the belt 216 is only used to transmit power, and the entire weight and rotational stability of the rotating drum 202 are jointly borne by four sets of rotating support frames 203 through the cooperation of bearing seats and annular grooves.

[0025] Each rotating drum 202 has sieve holes distributed on its sidewalls and outer circumference. The diameter of the sieve holes on the sidewalls is larger than that on the outer circumference to facilitate the discharge of decolorized material. A gap is left between the inner wall of the rotating drum 202 and the outer edge of the plate agitator 206, and this gap is smaller than the sieve hole diameter. During operation, the material is discharged in an orderly manner through the sieve holes over time after being restricted by the gap, achieving dynamic decolorization and guided discharge. Since the material initially entering the rotating drum 202 is solid sesame raw material, and the flow restriction gap is smaller than the sieve hole diameter, the material will not leak directly from the sieve holes in large quantities during the tumbling process. Instead, it will be discharged gradually through the sieve holes after the decolorizing agent is sprayed in from the outside through the nozzle 302 and makes full contact.

[0026] The mixing tank 201 has a hexagonal structure, with a main feed pipe 217 installed in the middle of its upper end. The lower end of the main feed pipe 217 is connected to two symmetrically installed L-shaped conveying pipes 218. A discharge pipe 219 is installed at the lower front side of the mixing tank 201.

[0027] Specifically, the operating parameters of the drive motor 212 are programmed and set by the controller 4 located on the front side of the mounting base 1. The controller 4 adjusts the output speed and start / stop frequency of the drive motor 212, thereby achieving precise electrical control of the rotation state of the rotating main shaft 208 and the stirring shaft 205. By adopting an independent power transmission path design, the rotating main shaft 208 drives the drive pulley 207 to rotate, and at the same time, the meshing transmission between the drive wheel 209 and the driven transmission wheel 210 drives the stirring shaft 205 to rotate, thus forming a differential operation relationship between the rotating drum 202 and the stirring shaft 205. By having multiple gear blocks 213 on the outer ring surface of the drive wheel 209 mesh with multiple gear grooves 214 on the outer ring surface of the driven transmission wheel 210, and using a transmission ratio of at least 1:3, the stirring shaft 205 achieves intermittent rotation under the continuous drive of the drive motor 212, thereby reducing the mechanical shearing frequency at a physical level. The inclined 1 / 4 arc plate agitator 206, which is symmetrically installed on the agitator shaft 205, guides the flowing oil through the semi-circular groove 215 on the surface of the plate, thereby forming a gentle laminar flow state when turning the material, and avoiding the generation of local high temperature.

[0028] As a further improvement to the above technical solution: the auxiliary mechanism 3 includes a plurality of annular diverter pipes 301 arranged at equal intervals on the outer wall of the mixing tank 201, and a plurality of nozzles 302 are connected to the inner wall of each annular diverter pipe 301.

[0029] The end of each nozzle 302 away from the annular diverter pipe 301 penetrates the outer wall of the mixing tank 201. The lower ends of multiple annular diverter pipes 301 are connected in series through a conveying pipe 303. One end of the conveying pipe 303 is connected to an inlet flange 304 for uniformly spraying the decolorizing agent through the annular structure.

[0030] Specifically, multiple equally spaced annular distribution pipes 301 are connected in series via a delivery pipe 303. One end of the delivery pipe 303 is fixedly connected to an external decolorizing agent pressurization supply device via an inlet flange 304, thus establishing a stable decolorizing agent delivery channel. High-pressure decolorizing agent is introduced through the inlet flange 304. The series piping design ensures that the decolorizing agent is evenly distributed into each annular distribution pipe 301, thereby ensuring pressure balance within each layer of the annular distribution pipe 301. Multiple nozzles 302, connected to the inner wall of each annular distribution pipe 301, atomize and spray the decolorizing agent into the mixing tank 201, allowing the decolorizing agent to fully cover the surface of the rotating drum 202. The nozzles 302 penetrate the outer wall of the mixing tank 201, and the annular array spraying method allows the decolorizing agent to directly contact the oil inside the rotating drum 202 through the sieve holes, achieving uniform mixing in a confined space without damaging the oil quality.

[0031] Working principle: During operation, the operator first starts the drive motor 212 through the controller 4. The drive motor 212 drives the rotating main shaft 208 to start rotating under the support of the deep groove ball bearing 211 via the coupling. The rotating main shaft 208 drives the drive pulley 207 on it to rotate synchronously. The drive pulley 207 drives the rotating support frame 203 to rotate through the friction of the belt 216, thereby driving the two rotating cylinders 202 inside the mixing tank 201 to rotate continuously and slowly around their own axis. Simultaneously, the drive wheel 209 in the middle of the rotating main shaft 208 rotates coaxially. The gear block 213 on the outer ring of the drive wheel 209 periodically meshes with and moves the gear groove 214 on the outer ring of the driven transmission wheel 210. Since the meshing transmission ratio between the gear block 213 and the gear groove 214 is at least 1:3, the driven transmission wheel 210 rotates only once after the drive wheel 209 rotates several times. This forces the stirring shaft 205, which runs through the middle of the rotating drum 202, and the plate-type stirring paddle 206 on it to perform intermittent material-turning actions, creating a significant differential speed operation between the stirring shaft 205 and the rotating drum 202. Subsequently, the operator turns on the external liquid supply pump via the controller 4. The decolorizing agent enters the delivery pipe 303 through the inlet flange 304 and is distributed to each annular distribution pipe 301. Finally, it is atomized by the nozzle 302 and evenly sprayed onto the outer wall of the rotating drum 202, and then seeps into the interior through the sieve holes. Inside the mixing tank 201, the rotation of the rotating drum 202 and the intermittent rotation of the stirring shaft 205 work together to gently agitate the sesame oil raw material. Combined with the flow guidance provided by the semi-circular grooves 215 on the surface of the plate agitator 206, the oil forms a laminar flow and slowly tumbles within the drum. During this process, the decolorizing agent gradually diffuses and comes into contact with and adsorbs the pigment. As the rotating drum 202 continues to rotate, the material gradually moves towards the edge of the drum 202 under the influence of gravity and differential agitation. Utilizing the pre-set flow-limiting gap between the inner wall of the rotating drum 202 and the outer edge of the plate agitator 206, the material is restricted in its flow rate and passes through the sieve holes. Because the diameter of the sieve holes on the side wall is larger than that on the outer circumferential surface, the material is eventually discharged orderly along the drum wall over time, collected, and discharged through the discharge pipe 219 at the bottom of the mixing tank 201, completing the entire decolorization process.

[0032] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lignan-protective decolorizing device for sesame oil refining, comprising a mounting base (1) for supporting the sesame oil, characterized in that: The mounting base (1) has a main body mechanism (2) mounted on its top, and an auxiliary mechanism (3) is mounted on the outside of the main body mechanism (2). The main structure (2) includes a mixing tank (201) for bearing a load. Two rotating cylinders (202) are rotatably arranged inside the mixing tank (201). Two sets of rotating support frames (203) are fitted onto the outer ring surfaces at both ends of each rotating cylinder (202). Two sets of pulley rings (204) are fitted onto the outer ring surface of the rotating cylinder (202) on the side furthest from each other in each pair of rotating support frames (203). A stirring shaft (2) passes through the middle of each of the two rotating cylinders (202) along the left-right direction. 05), two sets of plate-type stirring paddles (206) are installed on both the left and right sides of the stirring shaft (205), and two sets of driving pulleys (207) are respectively arranged perpendicular to the upper end of the two sets of pulley rings (204). A rotating main shaft (208) runs through the middle of the two sets of driving pulleys (207) along the left and right direction. A drive wheel (209) is arranged in the middle of the rotating main shaft (208), and a driven transmission wheel (210) is installed in the middle of the stirring shaft (205) perpendicular to the lower end of the drive wheel (209).

2. The lignan-protective decolorizing device for sesame oil refining according to claim 1, characterized in that: The rotating spindle (208) extends horizontally through the left and right side walls of the mixing tank (201). Deep groove ball bearings (211) are installed at the left and right ends of the rotating spindle (208) via bearing seats. The deep groove ball bearing (211) on the left side is connected to a horizontally arranged drive motor (212) via a coupling. A controller (4) is installed on the front side of the mixing tank (201).

3. The lignan-protective decolorizing device for sesame oil refining according to claim 1, characterized in that: The outer ring surface of the drive wheel (209) is equipped with a plurality of gear blocks (213), and the outer ring surface of the driven transmission wheel (210) is provided with a plurality of gear grooves (214). The meshing transmission ratio of the gear blocks (213) and the gear grooves (214) is at least 1:3 to achieve intermittent transmission.

4. The lignan-protective decolorizing device for sesame oil refining according to claim 3, characterized in that: Both sets of plate-type stirring paddles (206) are inclined 1 / 4 arc plates, and each arc plate has semi-circular grooves (215) equidistantly opened on its surface. The two sets of plate-type stirring paddles (206) are installed symmetrically on the stirring shaft (205).

5. The lignan-protective decolorizing device for sesame oil refining according to claim 1, characterized in that: The two sets of pulley rings (204) and the two sets of drive pulleys (207) are connected by a belt (216) to realize the rotation of the rotating cylinder (202).

6. The lignan-protective decolorizing device for sesame oil refining according to claim 5, characterized in that: Each of the rotating cylinders (202) has sieve holes distributed on its side wall and outer circumferential surface. The diameter of the sieve holes on the side wall is larger than the diameter of the sieve holes on the outer circumferential surface, so as to facilitate the discharge of the decolorized material.

7. The lignan-protective decolorizing device for sesame oil refining according to claim 1, characterized in that: The mixing tank (201) has a hexagonal structure, with a main feed pipe (217) installed in the middle of its upper end. The lower end of the main feed pipe (217) is connected to two symmetrically installed L-shaped conveying pipes (218), and a discharge pipe (219) is installed at the lower front side of the mixing tank (201).

8. The lignan-protective decolorizing device for sesame oil refining according to claim 1, characterized in that: There is a gap between the inner wall of the rotating cylinder (202) and the outer edge of the plate stirring paddle (206), and the gap is smaller than the sieve hole diameter. During operation, the material is discharged in an orderly manner through the sieve hole after being restricted by the gap, so as to realize dynamic decolorization and guided discharge.

9. The lignan-protective decolorizing device for sesame oil refining according to claim 1, characterized in that: The auxiliary mechanism (3) includes a plurality of annular diverter pipes (301) arranged at equal intervals on the outer wall of the mixing tank (201), and a plurality of nozzles (302) are connected to the inner wall of each annular diverter pipe (301).

10. A lignan-protective decolorizing device for sesame oil refining according to claim 9, characterized in that: Each nozzle (302) has one end away from the annular diverter pipe (301) that penetrates the outer wall of the mixing tank (201). The lower ends of multiple annular diverter pipes (301) are connected in series through a conveying pipe (303). One end of the conveying pipe (303) is connected to an inlet flange (304) for uniformly spraying the decolorizing agent through the annular structure.

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