Idesia polycarpa oil refining extraction equipment and extraction method thereof

Abstract

The invention relates to the technical field of idesia oil extraction, in particular to idesia oil refining and extracting equipment and an extracting method thereof, solves the problem that during idesia oil refining and degumming, hot water injection is not uniform, and the oil refining quality is influenced, and relates to the technical field of idesia oil extraction, in particular to idesia oil refining and extracting equipment and an extracting method thereof. The stirring mechanism comprises a stirring rod and an open ring body, the open ring body is communicated with the stirring rod through a leading-in pipe, the stirring rod is in transmission connection with a motor at the top of the degumming tank, and a plurality of blade groups which are arranged up and down are mounted on the outer surface of the stirring rod; a guide-out groove is formed in the blade set, and a plurality of flow dividing assemblies are installed in the stirring rod. Liquid needing to be added can be put at multiple points at different heights in the degumming tank, it is ensured that the liquid makes full contact with crude oil, dissolution of colloidal substances is promoted, and the degumming speed and effect are improved.

Description

Technical Field

[0001] The invention relates to the technical field of Castanopsis schefflera oil extraction, in particular to Castanopsis schefflera oil refining and extraction equipment and an extraction method thereof. Background Art

[0002] Refining tung oil is a multi-step process aimed at removing impurities and improving its quality. The main steps in refining tung oil typically include degumming, deacidification, decolorization, and deodorization. Degumming is a crucial first step in the refining process, removing water-soluble impurities, particularly colloids such as phospholipids (e.g., lecithin). These phospholipids often become sticky in the oil, causing turbidity and stratification, which directly impacts the oil's quality, stability, and subsequent refining efforts.

[0003] During the refining and degumming process of crude castanopsis oil, hot water is usually needed to increase the solubility of the colloidal substances in the oil. When phospholipids combine with water, the phospholipids will precipitate from the oil, eventually forming an oil-water separation system.

[0004] Conventionally, direct injection is often used to inject the required hot water into the degumming tank. However, due to the high viscosity of Castanopsis chinensis oil, especially at low temperatures, the oil has poor fluidity. This results in a slow diffusion of hot water directly injected onto the surface of the crude oil in the degumming tank. This causes uneven distribution of the hot water throughout the crude oil, ultimately leading to incomplete removal of impurities such as phospholipids, which in turn affects degumming efficiency and, ultimately, the refining quality of the oil. Furthermore, to compensate for the poor degumming effect, it may be necessary to increase the amount of hot water used or extend the degumming time, which wastes energy and increases production costs. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a refining and extraction device for Castanopsis truncatum oil and an extraction method thereof, so as to solve the problem raised in the above background technology that uneven hot water injection affects the refining quality of Castanopsis truncatum oil during refining and degumming.

[0006] To achieve the above object, the present invention provides the following technical solution: a tung oil refining and extraction device, comprising a degumming tank, the degumming tank being equipped with a feeding assembly, and a stirring mechanism being provided in the degumming tank for dispersing the liquid introduced along the feeding assembly into multiple points in the degumming tank;

[0007] The stirring mechanism includes a stirring rod and an open ring body, the open ring body and the stirring rod are connected by an inlet pipe, the stirring rod is connected to the motor at the top of the degumming tank, the outer surface of the stirring rod is equipped with a plurality of blade groups arranged up and down, the interior of the blade group is provided with a guide groove, and a plurality of diversion components are installed inside the stirring rod, the inner diameter of the plurality of diversion components gradually decreases from top to bottom, when liquid flows downward in the inner cavity of the stirring rod, the plurality of diversion components divert the liquid to the plurality of guide grooves and discharge it.

[0008] Preferably, the blade group consists of three blades, and the diverter assembly consists of a base plate, a retaining ring and three guide blocks. The retaining ring is installed on the top surface of the base plate and fits with the inner side of the guide block.

[0009] Preferably, the height of the guide blocks gradually decreases from the middle to both sides, and the height of the connecting line between two adjacent guide blocks gradually decreases from the inside to the outside;

[0010] The retaining ring in the bottom diverter assembly is solid.

[0011] Preferably, the outlet groove is composed of a straight pore and a plurality of diversion pores connected to the bottom of the straight pore, and the extension direction of the straight pore is consistent with the extension direction of the blade.

[0012] Preferably, the open ring body includes an annular frame connected to the top of the two inlet pipes, and annular baffles are installed on both the inner and outer sides of the wall of the annular frame recess, and the two annular baffles are inclined from bottom to top from one side to the other.

[0013] Preferably, a reinforcement rod is installed between the annular frame and the stirring rod;

[0014] Preferably, the filter assembly includes two gradually expanding and staggered spiral filter structures, and the height of the spiral filter structure gradually decreases from the inside to the outside. The two spiral filter structures are respectively convex upward and concave downward. A slag discharge pipe passing through the degumming tank is installed at the tail end of the spiral filter structure, and a control valve is provided on the slag discharge pipe.

[0015] Preferably, the feeding assembly includes a feeding pipe inserted into the top of the degumming tank, the bottom of the feeding pipe is connected to a branch pipe extending into the interior of the annular frame, the diameter of the branch pipe is smaller than the spacing between the two annular baffles, and an arc-shaped plate located below the annular baffle is sleeved on the bottom of the three branch pipes.

[0016] As a preferred method, the steps of the extraction method of the Castanopsis tung oil refining and extraction equipment are as follows:

[0017] S1. Put the crude oil of Castanopsis tung oil into the degumming tank and heat it to 50-60°C;

[0018] S2. A hot water supply device is connected to an external feeding pipe to add an appropriate amount of hot water to the preheated crude oil. The hot water flows along the open ring body and the inlet pipe into the inner cavity of the stirring rod. Then, during the process of flowing from top to bottom, it is dispersed and introduced into the outlet grooves on the blades at different heights by the plurality of diversion components. When the motor on the degumming tank drives the stirring rod to rotate, the hot water is dispersed and delivered to different positions in the crude oil at multiple points.

[0019] S3. After the hot water is added, continue stirring for 10-20 minutes to fully hydrate impurities such as phospholipids to form phospholipid hydrates;

[0020] S4. After stopping stirring, let it stand for 1-2 hours;

[0021] S5. Open the outlet at the bottom of the degumming tank to allow the oil to drain downwards, and use the filter assembly to remove solid impurities.

[0022] S6. After the oil is discharged, the solenoid valve is opened, and the impurities on the filter assembly slide along the spiral downward path to the slag discharge pipe and are finally discharged;

[0023] S7. The derived oil is sequentially sent to two operating tanks on one side of the degumming tank for deacidification, decolorization, deodorization and dehydration operations.

[0024] By means of the above technical solution, the present invention provides a refining and extraction device for Castanopsis truncatula oil and a method thereof, which have at least the following beneficial effects:

[0025] 1. During the degumming process of refining and extracting Castanopsis chinensis oil, the hot water required for injection is introduced into the open ring body along the injection component, and then the hot water is injected into multiple points at different heights in the degumming tank along the introduction pipe, the inner cavity of the stirring rod and several diversion components in sequence to ensure full contact between the water and the crude oil. At the same time, the hot water distribution in the entire Castanopsis chinensis crude oil system is more even, which promotes the dissolution of the colloid substance and improves the degumming speed and effect.

[0026] 2. The present invention can introduce the liquid required for the crude oil degumming process into the inner cavity of the stirring rod, and utilize a plurality of diversion components to intercept and divert part of the liquid column flowing from top to bottom in the stirring rod. At the same time, three guide blocks in the diversion component cooperate to form three recessed grooves to divert the intercepted liquid into the interiors of different paddles at corresponding heights. The straight pores and a plurality of diversion pores therein are then diverted into the crude oil, thereby effectively ensuring the dispersion effect of the liquid.

[0027] 3. The present invention uses two annular baffles in conjunction with the arc-shaped plate added to the branch pipe to expand the effective shielding area above the branch pipe when the branch pipe releases liquid into the annular frame, thereby preventing the liquid from splashing outside the annular frame.

[0028] 4. The present invention utilizes an upwardly protruding spiral filter structure to intercept solid impurities. Its inclined upper surface can guide the solid impurities to slide into the downwardly concave spiral filter structure, thereby effectively avoiding the risk of clogging of the entire filter pore of the filter assembly.

[0029] 5. The two spiral filtering structures gradually expanding downward in the present invention can guide the intercepted solid impurities to the location of the slag discharge pipe, thereby ultimately facilitating the transfer of the solid impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the stirring mechanism of the present invention;

[0033] Figure 3 This is a schematic diagram of the position structure of the delivery component and the open ring body of the present invention;

[0034] Figure 4 Schematic diagram of the installation structure of the stirring rod and the diversion assembly of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the diversion component of the present invention;

[0036] Figure 6 It is a structural schematic diagram of the lead-out slot of the present invention;

[0037] Figure 7 Schematic diagram of the installation structure of the annular frame and the annular baffle of the present invention;

[0038] Figure 8 Schematic diagram of the structure of the filter assembly of the present invention.

[0039] In the picture:

[0040] 1. Operation tank; 2. Degumming tank;

[0041] 3. Feeding assembly; 301. Feeding pipe; 302. Branch pipe; 303. Arc plate;

[0042] 4. Stirring mechanism; 401. Stirring rod; 402. Open ring; 4021. Ring frame; 4022. Ring baffle; 4023. Reinforcement rod; 403. Inlet pipe; 404. Blade assembly; 405. Outlet groove; 4051. Straight aperture; 4052. Diverter aperture; 406. Diverter assembly; 4061. Bottom plate; 4062. Baffle ring; 4063. Guide block;

[0043] 5. Filter assembly; 501. Spiral filter structure; 502. Slag discharge pipe. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0045] Example 1

[0046] See also Figures 1-8 , the present embodiment proposes a tung oil refining and extracting device, which can add liquids such as hot water supplied to the crude oil during the degumming process, and disperses the delivery of liquids at multiple points in the crude oil to ensure the uniformity of its delivery. This tung oil refining and extracting device is mainly composed of an operating tank 1, a degumming tank 2, a delivery assembly 3 installed on the degumming tank 2, and a stirring mechanism 4 located in the degumming tank 2. Wherein the operating tank 1 is mainly used for deacidification, decolorization, deodorization and dehydration operations after the degumming of the tung oil crude oil, and this series of operations is basically consistent with the prior art, so no detailed description is made here. Corresponding heating functions are provided in the degumming tank 2 and the operating tank 1, and are intended to heat the crude oil during the degumming process. Delivery assembly 3 and stirring mechanism 4 cooperate to disperse the delivery of liquid injected into the crude oil at multiple points in the degumming tank 2, and the filter assembly 5 installed inside the degumming tank 2 is used for intercepting solid impurities therein when the oil in the degumming tank 2 is subsequently discharged, ensuring the purity of the oil discharged.

[0047] The stirring mechanism 4 includes a stirring rod 401 connected to the motor at the top of the degumming tank 2 and an open ring body 402 arranged in the degumming tank 2. The stirring rod 401 is composed of a solid part, a collecting part and a hollow part from top to bottom. The solid part is used to connect to the motor on the degumming tank 2. The collecting part is connected to two inlet pipes 403 at the bottom of the open ring body 402. The hollow part is used to combine with a plurality of blade groups 404 arranged up and down. The blade group 404 consists of three blades. The inner part of the blade is provided with a guide groove 405 for guiding out the liquid. The groove 405 is composed of a straight pore 4051 and a plurality of diversion pores 4052 connected to the bottom of the straight pore, and the extension direction of the straight pore 4051 is consistent with the extension direction of the horizontal plane of the blade, so that the liquid subsequently discharged from the outlet groove 405 is delivered at multiple points. A plurality of diversion components 406 are installed inside the stirring rod 401. The inner diameter of the plurality of diversion components 406 gradually decreases from top to bottom. When liquid flows downward in the inner cavity of the stirring rod 401, the plurality of diversion components 406 divert the liquid to the plurality of outlet grooves 405.

[0048] During actual application, by the external required addition hot water supply equipment or acidic liquid supply equipment (need to add in the special case that impurity such as phospholipid is difficult to remove), along the hot water or acidic liquid of the inside delivery assembly 3 to the open annulus 402 set amount, then the liquid added enters the convergence part of stirring rod 401 along two introduction pipes 403, the middle part of the convergence part has the setting of contraction to the bottom, so that when increasing the water body flow rate, the liquid that initially enters the hollow part will be tightly filled in the hollow part with less diameter, to avoid producing space. When the liquid of the hollow part of stirring rod 401 flows in the interior crude oil of degumming tank 2, the liquid is dispersed by some diverter assemblies 406 arranged up and down, and along the lead-out groove 405 in some blades, this liquid is evenly dispersed to the different height positions in the crude oil, ensure that hot water / acid solution can fully contact with crude oil, promote the uniform mixing of the two, be beneficial to the dissolving and separation of colloid substance.

[0049] Hot water is added at multiple points at different heights in the degumming tank 2, and the motor is operated to drive the stirring rod 401 and the blade group 404 to rotate, which can continuously stir the mixture of the ash crude oil and water. Through this dynamic stirring method, it helps to further accelerate the separation of the colloids and the oil, thereby improving the degumming efficiency.

[0050] In addition, hot water is evenly discharged at multiple points through several outlet slots 405 and mixed with the Castanopsis tung oil, which helps to evenly distribute the temperature of the entire system, avoid local temperatures being too high or too low, ensure that the crude oil is degummed within an appropriate temperature range, and prevent overheating or overcooling from having a negative impact on oil quality.

[0051] Example 2

[0052] In order to ensure that the liquid intercepted by the diverter assembly 406 in the stirring rod 401 can be smoothly and evenly introduced into the three outer blades, such as Figure 2-Figure 6 As shown, the flow diverter assembly 406 consists of a base plate 4061, a retaining ring 4062, and three guide blocks 4063. The retaining ring 4062 is mounted on the top surface of the base plate 4061 and abuts against the inner sides of the guide blocks 4063. Because the height of the guide blocks 4063 gradually decreases from the middle to the sides, a recessed groove can be formed between two adjacent guide blocks 4063. The three guide blocks 4063 are combined to form three annular recessed grooves arranged equidistantly. In the recessed grooves, the intersection of two guide blocks 4063 is located at the lowest position. The lowest point of the three recessed grooves corresponds to the entrance end of the outlet grooves 405 provided in the three blades of the blade assembly 404. At the same time, because the height of the connecting line between two adjacent guide blocks 4063 gradually decreases from the inside to the outside, the portion of liquid intercepted by the flow diverter assembly 406 of corresponding height can be dispersed relatively evenly and without residue into the three outlet grooves 405 of equal height.

[0053] In addition, the retaining ring 4062 in the bottom diversion component 406 is solid and can receive the liquid that is not intercepted by the diversion components 406 above, and then use the three guide blocks 4063 equipped with it to disperse and guide it into the outlet grooves 405 in the three paddles at the corresponding height.

[0054] Example 3

[0055] like Figure 2 、 Figure 3 and Figure 7 As shown, the open ring body 402 includes an annular frame 4021 connected to the top of the two inlet pipes 403, and annular baffles 4022 are installed on the inner and outer sides of the wall of the recessed part of the annular frame 4021, and the two annular baffles 4022 are inclined from bottom to top from one side to the other side. A reinforcement rod 4023 is installed between the annular frame 4021 and the stirring rod 401 to increase the structural stability between the open ring body 402 and the stirring rod 401. The height of the bottom wall of the annular frame 4021 increases from the area connected to the inlet pipe 403 to both sides, so that the liquid dropped into the annular frame 4021 by the dispensing component 3 can slide straight along the inclined bottom wall and finally slide into the two inlet pipes 403 without residue. At the same time, with the use of the annular baffles 4022, when the dispensing component 3 is dispensing liquid, the liquid is reduced from splashing outside the annular frame 4021.

[0056] In accordance with the above, the delivery assembly 3 includes a feeding pipe 301 plugged into the top of the degumming tank 2. The bottom of the feeding pipe 301 is connected to a branch pipe 302 extending into the interior of the annular frame 4021. The bottom of the three branch pipes 302 is sleeved with a curved plate 303 located below the annular baffle 4022. Since the diameter of the branch pipes 302 is smaller than the spacing between the two annular baffles 4022, in order to ensure the rapidity of the required liquid supply, when the feeding pipe 301 with a relatively large diameter is connected to the branch pipe 302 with a relatively small diameter, the amount of liquid delivered to the annular frame 4021 can be ensured by increasing the number of branch pipes 302. In addition, by the additional curved plate 303, when the branch pipes 302 are expanded to deliver liquid into the annular frame 4021, the effective shielding area above further reduces the liquid from splashing outside the annular frame 4021.

[0057] Example 4

[0058] Under normal circumstances, when using the filter structure set in the degumming tank 2 to remove solid impurities, the intercepted solid impurities are usually spread on the upper surface of the filter structure, and the solid impurities need to be transferred manually or with other tools. In addition, the filter holes are easily clogged, affecting the subsequent separation effect of oil and solid impurities. Figure 2 and Figure 8 As shown, in order to allow the intercepted solid impurities to be discharged autonomously after the oil and solid impurities are separated, the filter assembly 5 in this embodiment includes two gradually expanding and staggered spiral filter structures 501, and the height of the spiral filter structures 501 gradually decreases from the inside to the outside in a spiral shape. The two spiral filter structures 501 are respectively convex upward and concave downward. A slag discharge pipe 502 is installed at the tail end of the spiral filter structure 501, passing through the degumming tank 2, and the slag discharge pipe 502 is equipped with a control valve. The spiral filter structure 501 includes a filter plate and a filter membrane arranged below the filter plate, as well as other conventional filter structures required for filtering the tung oil and solid impurities, which are not described in detail here. Both spiral filter structures 501 can achieve a filtering effect, but when the upwardly protruding spiral filter structure 501 intercepts solid impurities, since its two sides tend to tilt downward, the solid impurities intercepted by its upper surface will slide into the spiral filter structure 501 arranged in a downward concave shape. In addition, since the spirals of the two spiral filter structures 501 gradually expand from the inside to the outside and gradually coil downward, the solid impurities that fall into the downward concave spiral filter structure 501 will eventually slide along its downward spiral groove to the location of the slag discharge pipe 502. After that, the control valve is opened to guide this part of the slag discharge pipe 502 outward. And the slag discharge pipe 502 is directly connected to the lowest point of the spiral filter structure 501, so that when transferring solid impurities, it can be unobstructed and more thorough.

[0059] Example 5

[0060] The extraction method of the tung oil refining and extraction equipment is as follows:

[0061] S1. Put the crude oil of Castanopsis tung oil into the degumming tank 2 and heat the crude oil to 50-60°C;

[0062] S2. An external hot water supply device is connected to the feeding pipe 301 to add an appropriate amount of hot water to the preheated crude oil. The hot water flows along the open ring body 402 and the introduction pipe 403 into the inner cavity of the stirring rod 401. Then, during the process of flowing from top to bottom, the hot water is dispersed and introduced into the outlet grooves 405 on the blades at different heights by the plurality of diversion components 406. When the motor on the degumming tank 2 drives the stirring rod 401 to rotate, the hot water is dispersed and delivered to different positions in the crude oil at multiple points;

[0063] S3. After the hot water is added, continue stirring for 10-20 minutes to fully hydrate impurities such as phospholipids to form phospholipid hydrates;

[0064] S4. After stopping stirring, let it stand for 1-2 hours;

[0065] S5. Open the bottom outlet of the degumming tank 2 to allow the oil to drain downwards, and simultaneously cooperate with the filter assembly 5 to remove solid impurities therein;

[0066] S6. After the oil is discharged, the solenoid valve is opened, and the impurities on the filter assembly 5 slide along the spiral downward path to the slag discharge pipe 502 and are finally discharged;

[0067] S7. The derived oil is sequentially fed into two operating tanks 1 on one side of the degumming tank 2 for deacidification, decolorization, deodorization and dehydration operations.

[0068] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A refining and extraction equipment for Castanopsis tung oil, characterized by: The degumming tank (2) comprises a dispensing assembly (3) installed in the degumming tank (2), and a stirring mechanism (4) is provided in the degumming tank (2) for dispersively dispensing the liquid introduced along the dispensing assembly (3) into multiple positions in the degumming tank (2); The stirring mechanism (4) comprises a stirring rod (401) and an open ring body (402). The open ring body (402) and the stirring rod (401) are connected via an inlet pipe (403). The stirring rod (401) is connected to the motor at the top of the degumming tank (2). The outer surface of the stirring rod (401) is provided with a plurality of blade groups (404) arranged up and down. The interior of the blade group (404) is provided with a guide groove (405). The interior of the stirring rod (401) is provided with a plurality of diversion components (406). The inner diameter of the plurality of diversion components (406) gradually decreases from top to bottom. When liquid flows downward in the inner cavity of the stirring rod (401), the plurality of diversion components (406) divert the liquid to the plurality of guide grooves (405) for discharge.

2. The refining and extraction equipment for Castanopsis truncatula oil according to claim 1, characterized in that: The blade assembly (404) is composed of three blades, and the diverter assembly (406) is composed of a base plate (4061), a retaining ring (4062) and three guide blocks (4063). The retaining ring (4062) is installed on the top surface of the base plate (4061) and fits with the inner side of the guide block (4063).

3. The refining and extraction equipment for Castanopsis truncatula oil according to claim 2, characterized in that: The height of the guide blocks (4063) gradually decreases from the middle to the two sides, and the height of the connection line between two adjacent guide blocks (4063) gradually decreases from the inside to the outside; The retaining ring (4062) in the bottommost diverter assembly (406) is solid.

4. The refining and extraction equipment for Castanopsis truncatula oil according to claim 1, characterized in that: The outlet groove (405) is composed of a straight pore (4051) and a plurality of diversion pores (4052) connected to the bottom of the straight pore, and the extension direction of the straight pore (4051) is consistent with the extension direction of the blade.

5. The refining and extraction equipment for Castanopsis truncatula oil according to claim 1, characterized in that: The open ring body (402) includes an annular frame (4021) connected to the top of the two inlet pipes (403), and annular retaining bars (4022) are installed on both the inner and outer sides of the concave wall of the annular frame (4021), and the two annular retaining bars (4022) are inclined from bottom to top from one side to the other side.

6. The refining and extraction equipment for Castanopsis truncatula oil according to claim 5, characterized in that: A reinforcement rod (4023) is installed between the annular frame (4021) and the stirring rod (401); The height of the bottom wall of the annular frame (4021) increases gradually from the area connected to the introduction tube (403) toward both sides.

7. The refining and extraction equipment for Castanopsis truncatula oil according to claim 1, characterized in that: The filter assembly (5) comprises two gradually enlarging and staggered spiral filter structures (501), and the height of the spiral filter structures (501) gradually decreases from the inside to the outside in a spiral shape. The two spiral filter structures (501) are respectively convex upward and concave downward. A slag discharge pipe (502) passing through the degumming tank (2) is installed at the tail end of the spiral filter structure (501), and a control valve is provided on the slag discharge pipe (502).

8. The equipment for refining and extracting Castanopsis truncatula oil according to claim 1, characterized in that: The feeding assembly (3) comprises a feeding pipe (301) plugged into the top of the degumming tank (2); the bottom of the feeding pipe (301) is connected to a branch pipe (302) extending into the interior of the annular frame (4021); the diameter of the branch pipe (302) is smaller than the distance between the two annular retaining bars (4022); and an arc-shaped plate (303) located below the annular retaining bar (4022) is sleeved on the bottom of the three branch pipes (302).

9. The equipment for refining and extracting Castanopsis truncatula oil according to any one of claims 1 to 8, characterized in that: The extraction method of the tung oil refining and extraction equipment is as follows: S1, putting the crude oil of Castanopsis tung oil into the degumming tank (2), and heating the crude oil to 50°C-60°C; S2, an external hot water supply device is connected to the feeding pipe (301), and an appropriate amount of hot water is added to the preheated crude oil. The hot water flows along the open ring body (402) and the introduction pipe (403) into the inner cavity of the stirring rod (401). Then, during the process of flowing from top to bottom, the hot water is dispersedly introduced into the outlet grooves (405) on the blades at different heights by the plurality of diversion components (406). When the motor on the degumming tank (2) drives the stirring rod (401) to rotate, the hot water is dispersedly fed to different positions in the crude oil at multiple points; S3. After the hot water is added, continue stirring for 10-20 minutes to fully hydrate impurities such as phospholipids to form phospholipid hydrates; S4. Stop stirring and let it stand for 1-2 hours; S5, opening the discharge port at the bottom of the degumming tank (2) to allow the oil therein to be discharged downwards, while simultaneously cooperating with the filter assembly (5) to remove solid impurities therein; S6. After the oil is discharged, the solenoid valve is opened, and the impurities on the filter assembly (5) slide along the spiral downward path to the slag discharge pipe (502) and are finally discharged; S7. The extracted oil is sequentially fed into two operation tanks (1) on one side of the degumming tank (2) for deacidification, decolorization, deodorization and dehydration operations.

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