A plasticizer removal device and its deplasticizing process for walnut oil production

Abstract

This invention discloses a plasticizer removal device and its deplasticization process for walnut oil production, relating to the field of walnut oil processing. The device and process include a deplasticization tank, a negative pressure air pump for extraction at the top, an electric heating ring at the bottom, an external circulation deplasticization adsorption mechanism on the outer surface, a rotating tube inside the tank, an aeration mechanism at the bottom, and a spraying mechanism on the top surface. This device and process utilize electric heating and photocatalysis to decompose and release plasticizers. Simultaneously, negative pressure extraction and aeration improve the plasticizer release efficiency. After circulation adsorption by the external circulation deplasticization adsorption mechanism, walnut oil is sprayed onto the surface, thus achieving the deplasticization effect.

Description

Technical Field

[0001] This invention relates to the field of walnut oil processing technology, specifically to a plasticizer removal device and its deplasticization process for walnut oil production. Background Technology

[0002] Walnut oil is an edible oil extracted by pressing walnuts. The process of peeling, shelling, drying, and finally pressing walnuts involves multiple steps, which are now mostly automated using mechanical equipment. However, some contamination is inevitable during these processes, the most common of which is plasticizers. In recent years, the problem of excessive plasticizers in edible oils has been frequently reported, seriously affecting the safety of oil products.

[0003] Currently, methods for removing plasticizers from edible oils include adsorption with adsorbents, thermal decomposition, photocatalytic decomposition, and other biological treatment methods. Due to the special nature of edible oils, some conventional chemical methods are not suitable and can easily cause secondary pollution. Conventional methods require multiple steps and are cumbersome to operate. Furthermore, during the thermal decomposition process, plasticizers are usually released directly into the air, resulting in slow removal and secondary pollution of the air and the operating area. Therefore, a plasticizer removal device and its deplasticization process for walnut oil production are provided to solve the above problems. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a plasticizer removal device and its deplasticization process for walnut oil production. This solves the problems of conventional methods, which require multiple steps and are cumbersome to operate. Furthermore, during the heating and decomposition process, plasticizers are usually released directly into the air, resulting in slow discharge and secondary pollution of the discharged plasticizers in the air, as well as contamination of the operating area.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: a plasticizer removal device and its plasticizing process for walnut oil production, comprising a plasticizing tank, a negative pressure air pump for evacuation installed at the top of the plasticizing tank, an electric heating ring installed at the bottom of the plasticizing tank, an external circulation plasticizing adsorption mechanism provided on the outer surface of the plasticizing tank, a rotating tube provided inside the plasticizing tank, an aeration mechanism installed at the bottom of the rotating tube, and a spraying mechanism installed on the outer surface of the top of the rotating tube;

[0008] The external circulation deplasticizing adsorption mechanism includes a filter cylinder and a detachable activated carbon adsorption filter element installed inside the filter cylinder.

[0009] The aeration mechanism includes multiple aeration discs arranged in a ring array installed on the outer surface of the bottom end of the rotating tube. The aeration discs are connected to the inside of the rotating tube, and the aeration discs rotate and stir along with the rotating tube while performing aeration.

[0010] The spraying mechanism includes a rotating spray head fixedly installed on the outer surface of the rotating tube, and the filter cylinder is connected to the inside of the rotating spray head.

[0011] Preferably, a sealing cover is installed on the top of the deplasticizing tank, a feed pipe is installed on the top of the sealing cover, a discharge pipe is installed on the bottom of the deplasticizing tank, a servo motor for driving the rotating tube is installed on the top of the sealing cover, and a gas adsorption mechanism is installed on the top of the sealing cover, which is connected to the output end of a negative pressure air pump.

[0012] Preferably, a device frame is mounted on the outer surface of the servo motor, a transmission belt is installed between the output end of the servo motor and the rotating tube, the rotating tube is rotatably connected to the sealing cover, and an air intake filter box is rotatably connected to the top of the rotating tube. The device frame and the air intake filter box are both fixedly connected to the top of the sealing cover.

[0013] Preferably, an annular ultraviolet lamp is installed inside the deplasticizing tank, and a support frame fixed to the deplasticizing tank is installed above the annular ultraviolet lamp. A connector is fixedly installed at the bottom of the support frame. The rotating spray head is internally connected to the connector and the connector is rotatably connected to the rotating spray head. The other end of the connector is connected to the filter cartridge. Spray holes are opened on the side of the rotating spray head, and the spray holes are directly facing the annular ultraviolet lamp.

[0014] Preferably, the support frame has an integrally formed annular slide rail in the middle, the bottom of the annular slide rail has a groove, the top of the rotating spray head is welded with a cantilever, the top of the cantilever is equipped with a lifting ring, the top of the lifting ring is equipped with a slider, and the slider is slidably connected inside the groove.

[0015] Preferably, a cylinder cover is bolted to the top of the filter cylinder, a connecting pipe is installed between the cylinder cover and the connector, a fixing ring is installed on the outer wall of the filter cylinder, a fixing plate is installed on the outer wall of the deplasticizing tank, the fixing ring is fixed to the outer surface of the fixing plate, a circulation pipe is installed at the bottom of the filter cylinder, a three-way valve is installed between the circulation pipe and the discharge pipe, and an oil pump is installed between the discharge pipe and the deplasticizing tank.

[0016] Preferably, a support pipe is installed on the outer surface of the bottom end of the rotating tube, the aeration disc is installed at the end of the support pipe, and multiple aeration nozzles are installed on the outer surface of the aeration disc. The aeration nozzles are connected to the inside of the air inlet filter box through the support pipe.

[0017] Preferably, an installation tube is fixedly welded to the middle of the cylinder cover, the end of the connecting tube is installed on the top of the installation tube, a circular plate is installed at the bottom of the connecting tube, a sealing plug is installed at the bottom of the circular plate, the sealing plug is inserted into the inner top of the activated carbon adsorption filter element, positioning blocks are welded around the bottom of the circular plate, the positioning blocks are inserted between the filter cylinder and the activated carbon adsorption filter element, the circular plate abuts against the top of the activated carbon adsorption filter element, and an oil return hole is opened on the lower outer surface of the installation tube.

[0018] Preferably, the gas adsorption mechanism includes a housing installed on the top of the sealing cover. An air inlet head connected to a negative pressure air pump is fixedly installed inside one end of the housing, and a sliding exhaust head is provided inside the other end of the housing. Multiple replaceable silica gel adsorption filter elements are inserted between the air inlet head and the sliding exhaust head. An exhaust seat connected to the sliding exhaust head is provided on the top of the housing. A sliding frame is installed on the side of the sliding exhaust head, and the sliding frame passes through the housing. A fixing screw is installed on the outer side of the sliding frame.

[0019] Preferably, the plasticizer removal process of the plasticizer removal device for walnut oil production includes the following steps:

[0020] S1. Heating to promote activation: By activating the electric heating ring, the walnut oil at the bottom of the deplasticizing tank is heated, which increases the activity of plasticizer molecules in the walnut oil.

[0021] S2. Circulating adsorption: Walnut oil is circulated to the activated carbon adsorption filter through an oil pump, and plasticizers are directly adsorbed through the activated carbon adsorption filter.

[0022] S3, Spraying photocatalysis: The walnut oil extracted in S2 flows upward to the inside of the rotating spray head, and is sprayed into the deplasticized tank through the rotating spray head. The sprayed oil droplets are irradiated by the ring-shaped ultraviolet lamp to carry out photocatalytic decomposition.

[0023] S4. Negative pressure extraction: The air at the top of the deplasticizing tank is extracted to the outside by a negative pressure air pump, creating a negative pressure inside the deplasticizing tank. This allows external air to enter the deplasticizing tank from below the liquid surface and aerate the walnut oil through the aeration disc, assisting the plasticizer to escape to the outside. At the same time, the escaped plasticizer is discharged to the outside by the negative pressure air pump along with the airflow.

[0024] S5. Rotation enhancement: The servo motor drives the rotating tube to rotate, so that the aeration disc rotates and stirs while aerating the walnut oil. At the same time, the rotating spray head rotates, so that the droplets hit the surface of the ring-shaped ultraviolet lamp under the action of centrifugal force, which disperses the oil droplets and improves the photocatalytic decomposition effect, thereby enhancing the deplasticization effect.

[0025] This invention discloses a plasticizer removal device and its deplasticization process for walnut oil production, which has the following beneficial effects:

[0026] 1. The plasticizer removal device and its deplasticization process for walnut oil production heats the walnut oil using an electric heating ring, enhancing the activity of plasticizer molecules within the oil. Then, a negative pressure air pump draws air from the top of the deplasticization tank outwards, allowing external air to enter the tank from below the liquid surface, aerating the walnut oil. The gas is then discharged upwards, carrying away the escaped plasticizer molecules through the circulating airflow. Simultaneously, the walnut oil circulates through an activated carbon adsorption filter for direct plasticizer adsorption. Finally, the walnut oil is sprayed into the tank through a rotating spray head, which sprays oil droplets onto the outer surface of a ring-shaped ultraviolet lamp for photocatalytic decomposition. This combination of direct adsorption and heating-induced re-adsorption of plasticizers in the walnut oil enhances the deplasticization effect.

[0027] 2. The plasticizer removal device and its deplasticization process for walnut oil production: The rotating tube rotates under the action of a servo motor, causing the rotating spray head and aeration disc to rotate. At this time, the slider at the top of the rotating spray head slides along the chute and is suspended by the support frame. During the rotating spraying process, the oil droplets are hit on the outer surface of the annular ultraviolet lamp under the action of centrifugal force, which facilitates the dispersion of the oil droplets. When irradiated by the annular ultraviolet lamp, it is more conducive to the decomposition of plasticizers. During the rotation of the rotating tube, the aeration disc rotates. The back of the aeration disc is the surface that directly contacts the liquid during rotation. This causes the aeration disc to rotate during the aeration process. The aeration disc stirs the walnut oil, thereby accelerating the escape of plasticizers from the walnut oil.

[0028] 3. The plasticizer removal device and its deplasticization process used in walnut oil production involves plasticizer molecules being discharged outwards and then entering the chamber. They then flow sequentially through multiple silica gel adsorption filter elements via the air inlet. The silica gel particles inside the filter elements adsorb the plasticizer. During use, the sliding exhaust head can be slid outwards using a sliding frame. The frontmost silica gel adsorption filter element can be removed, the remaining filter elements pushed forward, and a new filter element inserted at the rearmost position near the sliding exhaust head. This is then secured with a fixing screw. This reduces the consumption of silica gel adsorption filter elements, promotes efficient use, facilitates assembly, and prevents plasticizer molecules from entering the workshop and causing secondary pollution. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall outer surface structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the overall rear structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the outer surface structure of the sealing cap of the present invention;

[0033] Figure 4 This is a schematic diagram of the top structure inside the deplasticizing tank of the present invention;

[0034] Figure 5 This is a cross-sectional view of the internal structure of the deplasticizing tank of the present invention;

[0035] Figure 6 This is a schematic diagram of the outer surface structure of the rotating tube of the present invention;

[0036] Figure 7 This is an exploded view of the outer surface structure of the support frame of the present invention;

[0037] Figure 8 This is an exploded view of the outer surface structure of the external circulation deplasticizing adsorption mechanism of the present invention;

[0038] Figure 9 This is a schematic diagram of the outer surface structure of the cap of the present invention;

[0039] Figure 10 This is an exploded view of the internal structure of the gas adsorption mechanism of the present invention.

[0040] In the diagram: 1. Deplasticizing tank; 2. Feed pipe; 3. Oil pump; 4. External circulation deplasticizing adsorption mechanism; 41. Filter cylinder; 42. Activated carbon adsorption filter element; 43. Cylinder cover; 44. Fixing plate; 45. Fixing ring; 46. Installation pipe; 47. Oil return hole; 48. Circular plate; 49. Sealing plug; 410. Positioning block; 5. Discharge pipe; 6. Three-way valve; 7. Circulation pipe; 8. Negative pressure air pump; 9. Gas adsorption mechanism; 91. Box body; 92. Air inlet head; 93. Sliding exhaust head; 94. Silica gel adsorption filter element; 95. Fixing screw; 96. Exhaust seat; 9 7. Sliding frame; 10. Servo motor; 11. Sealing cover; 12. Air inlet filter box; 13. Transmission belt; 14. Equipment frame; 15. Rotary pipe; 16. Spraying mechanism; 161. Support frame; 162. Rotary spray head; 163. Connecting pipe; 164. Circular slide rail; 165. Slide groove; 166. Lifting ring; 167. Sliding block; 168. Connector; 169. Cantilever; 1610. Spray hole; 17. Aeration mechanism; 171. Support pipe; 172. Aeration disc; 173. Aeration nozzle; 18. Heating ring; 19. Circular ultraviolet lamp. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, 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.

[0042] This application provides a plasticizer removal device and its deplasticization process for walnut oil production, which solves the problems of conventional methods that require multiple steps and are cumbersome to operate. In addition, during the heating and decomposition process, plasticizers usually enter the air directly, resulting in slow discharge and secondary pollution and contamination of the operating room caused by the discharged plasticizers entering the air.

[0043] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0044] This invention discloses a plasticizer removal device and its deplasticization process for walnut oil production.

[0045] According to the appendix Figure 1-10As shown, it includes a deplasticizing tank 1, a negative pressure air pump 8 for evacuation is installed on the top of the deplasticizing tank 1, an electric heating ring 18 is installed at the bottom of the inner part of the deplasticizing tank 1, an external circulation deplasticizing adsorption mechanism 4 is provided on the outer surface of the deplasticizing tank 1, a rotating tube 15 is provided inside the deplasticizing tank 1, an aeration mechanism 17 is installed at the bottom end of the rotating tube 15, and a spraying mechanism 16 is installed on the outer surface of the top end of the rotating tube 15.

[0046] The external circulation deplasticizing adsorption mechanism 4 includes a filter cylinder 41 and a removable activated carbon adsorption filter element 42 installed inside the filter cylinder 41.

[0047] The aeration mechanism 17 includes a plurality of aeration discs 172 arranged in a ring array on the outer surface of the bottom end of the rotating tube 15. The aeration discs 172 are connected to the inside of the rotating tube 15. While performing aeration, the aeration discs 172 rotate and stir along with the rotating tube 15.

[0048] The spraying mechanism 16 includes a rotating spray head 162 fixedly installed on the outer surface of the rotating tube 15, and the filter cylinder 41 is connected to the inside of the rotating spray head 162.

[0049] A sealing cover 11 is installed on the top of the deplasticizing tank 1, a feed pipe 2 is installed on the top of the sealing cover 11, a discharge pipe 5 is installed on the bottom of the deplasticizing tank 1, a servo motor 10 for driving the rotating tube 15 to rotate is installed on the top of the sealing cover 11, and a gas adsorption mechanism 9 is installed on the top of the sealing cover 11. The gas adsorption mechanism 9 is connected to the output end of the negative pressure air pump 8.

[0050] A device frame 14 is mounted on the outer surface of the servo motor 10. A transmission belt 13 is installed between the output end of the servo motor 10 and the rotating tube 15. The rotating tube 15 is rotatably connected to the sealing cover 11, and the top end of the rotating tube 15 is rotatably connected to the air intake filter box 12. The device frame 14 and the air intake filter box 12 are both fixedly connected to the top of the sealing cover 11.

[0051] An annular ultraviolet lamp 19 is installed inside the deplasticizing tank 1. A support frame 161 fixed to the deplasticizing tank 1 is installed above the annular ultraviolet lamp 19. A connector 168 is fixedly installed at the bottom of the support frame 161. A rotating spray head 162 is connected to the inside of the connector 168 and the connector 168 is rotatably connected to the rotating spray head 162. The other end of the connector 168 is connected to the filter cartridge 41. A spray hole 1610 is opened on the side of the rotating spray head 162, and the spray hole 1610 is directly facing the annular ultraviolet lamp 19.

[0052] The support frame 161 has an integrally formed annular slide rail 164 in the middle. The bottom of the annular slide rail 164 has a groove 165. The top of the rotating spray head 162 is welded with a cantilever 169. The top of the cantilever 169 is equipped with a lifting ring 166. The top of the lifting ring 166 is equipped with a slider 167. The slider 167 is slidably connected inside the groove 165.

[0053] A cover 43 is bolted to the top of the filter cylinder 41. A connecting pipe 163 is installed between the cover 43 and the connector 168. A fixing ring 45 is installed on the outer wall of the filter cylinder 41. A fixing plate 44 is installed on the outer wall of the deplasticizing tank 1. The fixing ring 45 is fixed to the outer surface of the fixing plate 44. A circulation pipe 7 is installed at the bottom of the filter cylinder 41. A three-way valve 6 is installed between the circulation pipe 7 and the discharge pipe 5. An oil pump 3 is installed between the discharge pipe 5 and the deplasticizing tank 1.

[0054] A support pipe 171 is installed on the outer surface of the bottom end of the rotating tube 15. An aeration disc 172 is installed at the end of the support pipe 171. Multiple aeration nozzles 173 are installed on the outer surface of the aeration disc 172. The aeration nozzles 173 are connected to the inside of the air intake filter box 12 through the support pipe 171.

[0055] An installation tube 46 is fixedly welded to the middle of the cylinder cover 43. The end of the connecting tube 163 is installed on the top of the installation tube 46. A circular plate 48 is installed at the bottom of the connecting tube 163. A sealing plug 49 is installed at the bottom of the circular plate 48. The sealing plug 49 is inserted into the inner top of the activated carbon adsorption filter element 42. Positioning blocks 410 are welded around the bottom of the circular plate 48. The positioning blocks 410 are inserted between the filter cylinder 41 and the activated carbon adsorption filter element 42. The circular plate 48 abuts against the top of the activated carbon adsorption filter element 42. An oil return hole 47 is opened on the outer surface of the lower end of the installation tube 46.

[0056] The gas adsorption mechanism 9 includes a housing 91 installed on the top of the sealing cover 11. An air inlet 92 connected to a negative pressure air pump 8 is fixedly installed inside one end of the housing 91. A sliding exhaust head 93 is provided inside the other end of the housing 91. Multiple replaceable silica gel adsorption filter elements 94 are inserted between the air inlet head 92 and the sliding exhaust head 93. An exhaust seat 96 connected to the sliding exhaust head 93 is provided on the top of the housing 91. A sliding frame 97 is installed on the side of the sliding exhaust head 93. The sliding frame 97 passes through the housing 91. A fixing screw 95 is installed on the outside of the sliding frame 97.

[0057] Working principle: In use, walnut oil is poured into the deplasticizing tank 1 through the feed pipe 2, and then the feed pipe end 2 is sealed. At this time, the electric heating ring 18, servo motor 10, negative pressure air pump 8, and oil pump 3 are activated. Simultaneously, the three-way valve 6 is rotated to connect the oil pump 3 to the circulation pipe 7. The electric heating ring 18 heats the walnut oil inside the deplasticizing tank 1, increasing the activity of plasticizer molecules and causing them to escape upwards. Simultaneously, the oil pump 3 draws the walnut oil from the bottom of the deplasticizing tank 1 into the activated carbon adsorption filter element 42. The oil then passes through the activated carbon adsorption filter element 42 and enters the filter cylinder 41, then upwards into the connecting pipe 163. During this process, the activated carbon adsorption filter element 42 directly adsorbs the plasticizers in the walnut oil, and then... The rotating spray head 162 sprays into the deplasticizing tank 1. At this time, the ring-shaped ultraviolet lamp 19 is activated. The sprayed oil droplets are irradiated by the ring-shaped ultraviolet lamp 19, which further catalyzes the release and decomposition of plasticizer molecules. During this process, the negative pressure air pump 8 draws the air from the top of the deplasticizing tank 1 outward, creating a negative pressure inside the deplasticizing tank 1. At this time, the external air enters the rotating tube 15 after being filtered by the air intake filter box 12. Then, it enters the aeration plate 172 through the support tube 171 at the bottom of the rotating tube 15. Finally, it is aerated outward through the aeration nozzle 173. The aeration process further enhances the fluidity of the walnut oil and improves the release of plasticizers. Meanwhile, the negative pressure air pump 8 continuously draws the air from the top of the deplasticizing tank 1 outward, using the air flow to carry away the plasticizer molecules released from the walnut oil, thus achieving the deplasticizing effect.

[0058] Furthermore, during the above operation, as the servo motor 10 drives the rotating tube 15 to rotate, the rotating tube 15 synchronously drives the rotating spray head 162 and multiple aeration discs 172 to rotate. At this time, the slider 167 at the top of the rotating spray head 162 slides along the slide groove 165 and is suspended by the support frame 161. The rotating spray process causes the oil droplets to hit the outer surface of the annular ultraviolet lamp 19 under the action of centrifugal force, which facilitates the dispersion of the oil droplets. When irradiated by the annular ultraviolet lamp 19, it is more conducive to the decomposition of plasticizers. During the process of the rotating tube 15 driving the aeration discs 172 to rotate, the back of the aeration discs 172 is the surface that directly contacts the liquid when rotating. This allows the aeration discs 172 to rotate during the aeration process. The aeration discs 172 stir the walnut oil, thereby accelerating the escape of plasticizers from the walnut oil.

[0059] Finally, the negative pressure air pump 8 continuously draws the air filtered by the air intake filter box 12 into the plastic removal tank 1. The air rises from the liquid surface to aerate, accelerating the liquid flow and improving the escape effect of plasticizer molecules. At the same time, the air is discharged upwards and continuously circulates, carrying away the plasticizer molecules in the air at the top of the plastic removal tank 1, thus achieving plastic removal. After being discharged outwards, the plasticizer molecules enter the box 91 and then flow through multiple silica gel adsorption filter elements 94 in sequence through the air intake head. The silica gel particles inside the silica gel adsorption filter element 94 adsorb the plasticizer. The walnut oil circulates through the activated carbon adsorption filter element 42, achieving direct adsorption of plasticizer, thereby completing the plastic removal process.

[0060] After use, by rotating the three-way valve 6, the oil pump 3 is connected to the discharge pipe 5. At this time, the oil pump 3 will draw out the walnut oil that has been deplasticized inside the deplasticization tank 1. Then, by replacing the activated carbon adsorption filter 42 and the silica gel adsorption filter 94, the next round of walnut oil deplasticization process can be started.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A plasticizer removal device for walnut oil production, comprising a plasticizer removal tank (1), characterized in that, The top of the deplasticizing tank (1) is equipped with a negative pressure air pump (8) for evacuation, the bottom of the deplasticizing tank (1) is equipped with an electric heating ring (18), the outer surface of the deplasticizing tank (1) is provided with an external circulation deplasticizing adsorption mechanism (4), the inside of the deplasticizing tank (1) is provided with a rotating tube (15), the bottom end of the rotating tube (15) is equipped with an aeration mechanism (17), and the top outer surface of the rotating tube (15) is equipped with a spraying mechanism (16). The external circulation deplastic adsorption mechanism (4) includes a filter cylinder (41) and a removable activated carbon adsorption filter element (42) installed inside the filter cylinder (41). The aeration mechanism (17) includes a plurality of aeration discs (172) arranged in a ring array on the outer surface of the bottom end of the rotating tube (15). The aeration discs (172) are connected to the inside of the rotating tube (15). The aeration discs (172) rotate and stir along with the rotating tube (15) while performing aeration. The spraying mechanism (16) includes a rotating spray head (162) fixedly installed on the outer surface of the rotating tube (15), and the filter cylinder (41) is connected to the inside of the rotating spray head (162); The inside of the deplasticizing tank (1) is equipped with an annular ultraviolet lamp (19). The side of the rotating spray head (162) is provided with a spray hole (1610). The spray hole (1610) is directly facing the annular ultraviolet lamp (19). The rotating spray head (162) rotates, causing the droplets to hit the surface of the annular ultraviolet lamp (19) under the action of centrifugal force, thus dispersing the oil droplets.

2. The plasticizer removal device for walnut oil production according to claim 1, characterized in that: The top of the deplasticizing tank (1) is equipped with a sealing cover (11), the top of the sealing cover (11) is equipped with a feed pipe (2), the bottom of the deplasticizing tank (1) is equipped with a discharge pipe (5), the top of the sealing cover (11) is equipped with a servo motor (10) for driving the rotating tube (15) to rotate, and the top of the sealing cover (11) is equipped with a gas adsorption mechanism (9), which is connected to the output end of the negative pressure air pump (8).

3. The plasticizer removal device for walnut oil production according to claim 2, characterized in that: The outer surface of the servo motor (10) is equipped with a device frame (14). A transmission belt (13) is installed between the output end of the servo motor (10) and the rotating tube (15). The rotating tube (15) is rotatably connected in the sealing cover (11), and the top end of the rotating tube (15) is rotatably connected to the air intake filter box (12). The device frame (14) and the air intake filter box (12) are both fixedly connected to the top of the sealing cover (11).

4. The plasticizer removal device for walnut oil production according to claim 2, characterized in that: Above the annular ultraviolet lamp (19) is a support frame (161) fixed to the deplastic tank (1). A connector (168) is fixedly installed at the bottom of the support frame (161). The rotating spray head (162) is internally connected to the connector (168), and the connector (168) is rotatably connected to the rotating spray head (162). The other end of the connector (168) is connected to the filter cartridge (41).

5. The plasticizer removal device for walnut oil production according to claim 4, characterized in that: The support frame (161) has an integrally formed annular slide rail (164) in the middle. The bottom of the annular slide rail (164) is provided with a slide groove (165). The top of the rotating spray head (162) is welded with a cantilever (169). The top of the cantilever (169) is equipped with a lifting ring (166). The top of the lifting ring (166) is equipped with a slider (167). The slider (167) is slidably connected inside the slide groove (165).

6. The plasticizer removal device for walnut oil production according to claim 4, characterized in that: The top of the filter cylinder (41) is bolted with a cylinder cover (43), and a connecting pipe (163) is installed between the cylinder cover (43) and the connector (168). A fixing ring (45) is installed on the outer wall of the filter cylinder (41), and a fixing plate (44) is installed on the outer wall of the deplasticizing tank (1). The fixing ring (45) is fixed on the outer surface of the fixing plate (44). A circulation pipe (7) is installed at the bottom of the filter cylinder (41), and a three-way valve (6) is installed between the circulation pipe (7) and the discharge pipe (5). An oil pump (3) is installed between the discharge pipe (5) and the deplasticizing tank (1).

7. The plasticizer removal device for walnut oil production according to claim 3, characterized in that: A support pipe (171) is installed on the outer surface of the bottom end of the rotating tube (15). The aeration disc (172) is installed at the end of the support pipe (171). Multiple aeration nozzles (173) are installed on the outer surface of the aeration disc (172). The aeration nozzles (173) are connected to the inside of the air intake filter box (12) through the support pipe (171).

8. The plasticizer removal device for walnut oil production according to claim 6, characterized in that: An installation tube (46) is fixedly welded to the middle of the cylinder cover (43). The end of the connecting tube (163) is installed on the top of the installation tube (46). A circular plate (48) is installed at the bottom of the connecting tube (163). A sealing plug (49) is installed at the bottom of the circular plate (48). The sealing plug (49) is inserted into the inner top of the activated carbon adsorption filter element (42). A positioning block (410) is welded around the bottom of the circular plate (48). The positioning block (410) is inserted between the filter cylinder (41) and the activated carbon adsorption filter element (42). The circular plate (48) abuts against the top of the activated carbon adsorption filter element (42). An oil return hole (47) is opened on the outer surface of the lower end of the installation tube (46).

9. A plasticizer removal device for walnut oil production according to claim 2, characterized in that: The gas adsorption mechanism (9) includes a box (91) installed on the top of the sealing cover (11). An air inlet (92) connected to a negative pressure air pump (8) is fixedly installed inside one end of the box (91). A sliding exhaust head (93) is provided inside the other end of the box (91). Multiple replaceable silica gel adsorption filter elements (94) are inserted between the air inlet (92) and the sliding exhaust head (93). An exhaust seat (96) connected to the sliding exhaust head (93) is provided on the top of the box (91). A sliding frame (97) is installed on the side of the sliding exhaust head (93). The sliding frame (97) penetrates the box (91). A fixing screw (95) is installed on the outside of the sliding frame (97).

10. The deplasticizing process of the plasticizer removal device for walnut oil production according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Heating to promote activation: By starting the electric heating ring (18), the walnut oil at the bottom of the deplasticizing tank (1) is heated through the electric heating ring (18), which promotes the increase of the activity of plasticizer molecules in the walnut oil. S2, Circulation Adsorption: Walnut oil is circulated to the activated carbon adsorption filter element (42) by the oil pump (3), and plasticizers are directly adsorbed by the activated carbon adsorption filter element (42). S3, Spraying photocatalysis: The walnut oil extracted in S2 flows upward to the inside of the rotating spray head (162), and is sprayed into the inside of the deplastic tank (1) through the rotating spray head (162). The sprayed oil droplets are irradiated by the ring-shaped ultraviolet lamp (19) to carry out photocatalytic decomposition. S4. Negative pressure extraction: The air at the top of the deplasticizing tank (1) is extracted to the outside by the negative pressure air pump (8). A negative pressure is formed inside the deplasticizing tank (1), so that the outside air enters the deplasticizing tank (1) from below the liquid surface. The walnut oil is aerated by the aeration disc (172) to help the plasticizer escape to the outside. At the same time, the escaped plasticizer is discharged to the outside by the airflow through the negative pressure air pump (8). S5. Rotation enhancement: The servo motor (10) drives the rotating tube (15) to rotate, so that the aeration disc (172) rotates and stirs while aerating in the walnut oil, thereby enhancing the photocatalytic decomposition effect and thus enhancing the deplasticization effect.

Images