Low-temperature subcritical extraction equipment and process for prinsepia utilis royle oil

Abstract

The invention discloses prinsepia utilis royle oil low-temperature subcritical extraction equipment and process, and belongs to the field of extraction equipment. A prinsepia utilis royle oil low-temperature subcritical extraction device comprises a fixing frame and an extraction tank fixedly installed on the fixing frame, the fixing frame is fixedly connected with a feeding cylinder communicated with the extraction tank, and the discharging end of the feeding cylinder is fixedly sleeved with a first electromagnetic valve; the driving part is arranged to drive the crushing cutter to rotate, prinsepia utilis royle in the hopper can be crushed, the permeation efficiency of a solvent is improved, meanwhile, the linkage part is used for driving the guide plate to vertically move in a reciprocating mode, prinsepia utilis royle which does not reach the crushing standard can be secondarily conveyed and crushed, the prinsepia utilis royle crushing quality is improved, and the crushing efficiency is improved through cooperation of an auger rod and a barrier strip. Prinsepia utilis royle deposited at the bottom of the extraction tank can be upwards conveyed and uniformly diffused in a solvent, and the contact surface of the solvent and the prinsepia utilis royle is increased, so that the prinsepia utilis royle oil extraction time is shortened, and the processing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of extraction equipment, and particularly to a low-temperature subcritical extraction equipment and process for pricklyash fruit oil. Background Art

[0002] Pricklyash fruit oil is an edible oil processed from pricklyash fruit, and is widely used in folk medical care, skin care and beauty. Long-term consumption of this oil has an important auxiliary effect on treating hyperlipidemia, reducing cholesterol and preventing cardiovascular diseases. When producing pricklyash fruit oil, a subcritical extraction equipment is usually used for processing.

[0003] With the rapid development of social economy, subcritical extraction is a new extraction and separation technology that uses subcritical fluid as an extractant, in a closed, oxygen-free and low-pressure pressure vessel, based on the principle of similar solubility of organic substances. Through the molecular diffusion process between the extraction material and the extractant during the soaking process, the fat-soluble components in the solid material are transferred to the liquid extractant, and then the extractant and the target product are separated through the process of vacuum evaporation, and finally the target product is obtained. Subcritical fluid extraction has many advantages compared with other separation methods: non-toxic, harmless, environmentally friendly, pollution-free, non-thermal processing, retaining the active ingredients of the extract without damage or oxidation, large production capacity, large-scale industrial production, energy-saving, low operating cost, and easy separation from the product.

[0004] However, when the existing low-temperature subcritical extraction equipment processes pricklyash fruit, the solvent can only penetrate into the pricklyash fruit through natural diffusion, and the penetration into the interior of large-volume or high-density pricklyash fruit is slow, resulting in incomplete extraction. Secondly, after the pricklyash fruit precipitates inside the extraction tank, the solvent cannot fully contact the pricklyash fruit comprehensively, resulting in the hindrance of solvent diffusion and prolonging the extraction time of pricklyash fruit oil. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the penetration of the low-temperature subcritical extraction equipment into the interior of large-volume or high-density pricklyash fruit is slow, resulting in incomplete extraction, and to propose a low-temperature subcritical extraction equipment and process for pricklyash fruit oil.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A low-temperature subcritical extraction device for Prinsepia utilis Royle oil, comprising a fixed frame and an extraction tank fixedly installed on the fixed frame. A feed cylinder communicating with the extraction tank is fixedly connected to the fixed frame. A first solenoid valve is fixedly sleeved on the discharge end of the feed cylinder. The device further includes: a hopper installed in the feed cylinder, with a filter plate fixedly connected to the bottom of the hopper. Among them, a crushing knife for crushing Prinsepia utilis Royle fruits is provided in the hopper, and a driving part for driving the crushing knife to rotate along the axis of the hopper is provided on the fixed frame; an arc-shaped guide plate fixedly connected in the feed cylinder, symmetrically arranged along the axis of the feed cylinder. A limiting groove is formed in the arc-shaped guide plate. Among them, a guide plate in contact with the hopper is slidably connected in the limiting groove. A groove is formed in the guide plate, and a linkage part is provided on the guide plate. When the linkage part moves, the guide plate moves vertically along the arc-shaped guide plate to push Prinsepia utilis Royle fruits into the hopper; a screw rod is rotatably installed in the extraction tank, and a retaining strip is fixedly connected to the screw rod.

[0008] In order to drive the crushing knife to rotate for crushing Prinsepia utilis Royle fruits, preferably, the driving part includes: a positioning frame fixedly connected to the fixed frame. A guiding groove is formed in the positioning frame. Among them, a first motor is fixedly connected to the positioning frame, and an output end of the first motor is fixedly connected to a stirring rod fixedly connected to the crushing knife. The stirring rod is rotatably connected to the filter plate.

[0009] In order to separate Prinsepia utilis Royle fruits of different sizes, further, a push plate is fixedly sleeved on the stirring rod, and the push plate is in contact with the filter plate.

[0010] In order to convey and crush unqualified crushed Prinsepia utilis Royle fruits for a second time, preferably, the linkage part includes: a connecting rod rotatably connected to the guide plate. Among them, one end of the connecting rod away from the guide plate is rotatably connected to a circular plate, and the connecting rod is eccentrically connected to the circular plate. A positioning rod is fixedly connected to one side of the circular plate, and the positioning rod is rotatably connected to the positioning frame; a first circular gear fixedly sleeved on the positioning rod. Among them, a second circular gear is meshed with the first circular gear. A transmission rod is fixedly connected to one side of the second circular gear. One end of the transmission rod away from the second circular gear penetrates through the positioning frame and is fixedly connected to a first bevel gear. A second bevel gear is meshed with one side of the first bevel gear away from the transmission rod, and the second bevel gear is fixedly sleeved on the stirring rod.

[0011] In order to drive the screw rod to rotate and increase the contact surface between Prinsepia utilis Royle fruits and the solvent, preferably, a second motor is fixedly installed on the fixed frame. An output end of the second motor penetrates into the extraction tank and is fixedly connected to the screw rod. A sealing bearing is fixedly sleeved on the output end of the second motor, and an outer ring of the sealing bearing is fixedly connected to the extraction tank.

[0012] In order to limit the auger rod and improve its stability in use, further, one end of the auger rod away from the output end of the second motor is rotatably connected with a limit disc, and a material guiding groove is formed on the limit disc.

[0013] In order to guide the prickly ash fruits, preferably, a discharge chute is provided between the hopper and the filter plate, and the number of the discharge chutes is two.

[0014] In order to control the discharge of prickly ash fruit oil, preferably, a discharge pipe is fixedly communicated with the extraction tank, and a second solenoid valve is fixedly sleeved on the discharge pipe.

[0015] In order to fix the hopper and guide the prickly ash fruits inside the feeding cylinder, preferably, two material guiding shells are fixedly connected inside the feeding cylinder, the inner arc surface of the material guiding shell is fixedly connected with the hopper, and an inclined groove is provided on the material guiding shell.

[0016] A low-temperature subcritical extraction process for prickly ash fruit oil comprises the following operating steps:

[0017] Step 1: Pour the prickly ash fruits into the hopper, and start the driving part by using an external control switch. The driving part drives the crushing knife to rotate, and the prickly ash fruits can be crushed.

[0018] Step 2: After the crushing is completed, the prickly ash fruits smaller than the through holes of the filter plate will fall downward into the extraction tank. The prickly ash fruits larger than the through holes of the filter plate will move outward along the center of the hopper under the action of the push plate and fall into the groove at the top of the material guiding plate.

[0019] Step 3: During the continuous crushing process, the driving part drives the linkage part to move, and the linkage part drives the material guiding plate to move vertically along the hopper and the arc-shaped guiding plate, pushing the larger prickly ash fruits upward and falling into the hopper again for secondary crushing treatment.

[0020] Step 4: After the crushed prickly ash fruits fall into the inner cavity of the extraction tank, the staff pours the solvent into the extraction tank and starts the second motor. The second motor drives the auger rod to rotate, and the prickly ash fruits deposited at the bottom of the extraction tank can be conveyed upward, so that they are evenly diffused in the extraction tank and fully contact with the solvent, thereby reducing the extraction time of prickly ash fruit oil and improving the processing efficiency.

[0021] Compared with the prior art, the present invention provides a low-temperature subcritical extraction device and process for prickly ash fruit oil, and has the following beneficial effects:

[0022] 1. The low-temperature subcritical extraction device for prickly ash fruit oil can crush the prickly ash fruits by driving the crushing knife to rotate by the driving part, so that the solvent can quickly diffuse and penetrate into the prickly ash fruits, thereby improving the extraction efficiency of prickly ash fruit oil;

[0023] 2. The low-temperature subcritical extraction equipment for pricklyash fruit oil can drive the guide plate to move vertically back and forth through the linkage part, enabling the secondary conveying and processing of unqualifiedly crushed pricklyash fruit, thereby improving the crushing quality of pricklyash fruit.

[0024] 3. The low-temperature subcritical extraction equipment for pricklyash fruit oil can drive the auger rod to rotate through the second motor, enabling the conveyance of the pricklyash fruit precipitated at the bottom of the extraction tank, making it evenly diffuse in the solvent inside the extraction tank, increasing the contact area between the pricklyash fruit and the solvent, reducing the extraction time, and improving the processing efficiency.

[0025] For the parts not involved in this device, they are the same as the prior art or can be implemented using the prior art. In the present invention, by setting the driving part to drive the crushing knife to rotate, the pricklyash fruit inside the hopper can be crushed, improving the penetration efficiency of the solvent. At the same time, by using the linkage part to drive the guide plate to move vertically back and forth, the unqualifiedly crushed pricklyash fruit can be conveyed and crushed a second time, improving the crushing quality of pricklyash fruit. Moreover, by using the cooperation of the auger rod and the baffle strip, the pricklyash fruit precipitated at the bottom of the extraction tank can be conveyed upward, making it evenly diffuse in the solvent, increasing the contact area between the solvent and the pricklyash fruit, thereby reducing the extraction time of pricklyash fruit oil and improving the processing efficiency. Brief Description of the Drawings

[0026] Figure 1 It is an axonometric schematic diagram of the structure of a low-temperature subcritical extraction equipment for pricklyash fruit oil proposed by the present invention;

[0027] Figure 2 It is a sectional schematic diagram of the extraction tank structure of a low-temperature subcritical extraction equipment for pricklyash fruit oil proposed by the present invention;

[0028] Figure 3 It is a sectional schematic diagram of the feeding cylinder structure of a low-temperature subcritical extraction equipment for pricklyash fruit oil proposed by the present invention;

[0029] Figure 4 It is a sectional schematic diagram of the hopper structure of a low-temperature subcritical extraction equipment for pricklyash fruit oil proposed by the present invention;

[0030] Figure 5 It is an exploded sectional view of the partial structure of a low-temperature subcritical extraction equipment for pricklyash fruit oil proposed by the present invention;

[0031] Figure 6 It is an axonometric schematic diagram of the crushing knife structure of a low-temperature subcritical extraction equipment for pricklyash fruit oil proposed by the present invention;

[0032] Figure 7 It is an axonometric schematic diagram of the driving part structure of a low-temperature subcritical extraction equipment for pricklyash fruit oil proposed by the present invention;

[0033] Figure 8 It is an axonometric schematic diagram of the linkage part structure of a low-temperature subcritical extraction equipment for pricklyash fruit oil proposed by the present invention;

[0034] Figure 9 This is a schematic cross-sectional view of the auger rod structure of a low-temperature subcritical extraction device for Prinsepia utilis Royle oil proposed by the present invention.

[0035] In the figure: 1, fixed frame; 2, extraction tank; 3, feed cylinder; 4, hopper; 5, positioning frame; 51, guide groove; 52, first motor; 53, stirring rod; 54, push plate; 6, filter plate; 7, crushing knife; 8, arc guide plate; 9, material guide plate; 10, connecting rod; 101, circular plate; 102, positioning rod; 103, first circular gear; 104, second circular gear; 105, transmission rod; 106, first bevel gear; 107, second bevel gear; 11, auger rod; 12, retaining strip; 13, second motor; 14, limit disc; 15, discharge pipe; 16, material guide shell. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying 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 the embodiments.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0038] Embodiment 1:

[0039] Refer to Figures 1-7 and Figure 9, A low-temperature subcritical extraction device for Prinsepia utilis Royle oil, comprising a fixing frame 1 and an extraction tank 2 fixedly installed on the fixing frame 1. A discharge pipe 15 is fixedly connected to the bottom of the extraction tank 2. A second solenoid valve is fixedly sleeved on the discharge pipe 15. When the second solenoid valve is opened, the Prinsepia utilis Royle oil in the extraction tank 2 can be discharged through the discharge pipe 15. A feed cylinder 3 communicating with the extraction tank 2 is fixedly connected to the fixing frame 1. A first solenoid valve is fixedly sleeved on the discharge end of the feed cylinder 3. When the Prinsepia utilis Royle enters the extraction tank 2, the first solenoid valve is closed to achieve the sealing of the extraction tank 2. Two guide shells 16 are fixedly connected inside the feed cylinder 3. The inner arc surface of the guide shell 16 is fixedly connected to the hopper 4. The guide shell 16 is provided with an inclined groove, which can fix the hopper 4 on the one hand and facilitate the entry of Prinsepia utilis Royle into the hopper 4 on the other hand. It further includes: a hopper 4 installed inside the feed cylinder 3. A filter plate 6 is fixedly connected to the bottom of the hopper 4. Two discharge grooves are provided between the hopper 4 and the filter plate 6. Among them, a crushing knife 7 for crushing Prinsepia utilis Royle is provided inside the hopper 4. A driving part for driving the crushing knife 7 to rotate along the axis of the hopper 4 is provided on the fixing frame 1; an arc-shaped guide plate 8 fixedly connected inside the feed cylinder 3 is symmetrically arranged along the axis of the feed cylinder 3. A limiting groove is opened on the arc-shaped guide plate 8. Among them, a guide plate 9 in contact with the hopper 4 is slidably connected inside the limiting groove. A groove is opened on the guide plate 9. A linkage part is provided on the guide plate 9. When the linkage part moves, the guide plate 9 moves vertically along the arc-shaped guide plate 8 to push the Prinsepia utilis Royle into the hopper 4; a screw rod 11 is rotatably installed inside the extraction tank 2. A baffle 12 is fixedly connected to the screw rod 11. When the screw rod 11 rotates, the Prinsepia utilis Royle precipitated at the bottom of the extraction tank 2 moves upward along the screw rod 11. When the Prinsepia utilis Royle moves upward, the baffle 12 can limit it. The length of the baffle 12 is less than that of the screw rod 11. When the Prinsepia utilis Royle breaks away from contact with the baffle 12, it will spread in the solvent inside the extraction tank 2, increasing the contact between the Prinsepia utilis Royle and the solvent and facilitating the diffusion and penetration of the solvent.

[0040] Specifically: By setting the driving part to drive the crushing knife 7 to rotate, the Prinsepia utilis Royle inside the hopper 4 can be crushed, improving the penetration efficiency of the solvent. At the same time, by using the linkage part to drive the guide plate 9 to move vertically back and forth, the Prinsepia utilis Royle that is not crushed up to standard can be conveyed and crushed again, improving the crushing quality of the Prinsepia utilis Royle. And by using the cooperation of the screw rod 11 and the baffle 12, the Prinsepia utilis Royle precipitated at the bottom of the extraction tank 2 can be conveyed upward, making it evenly spread in the solvent, increasing the contact surface between the solvent and the Prinsepia utilis Royle, thereby reducing the extraction time of Prinsepia utilis Royle oil and improving the processing efficiency.

[0041] Embodiment Two:

[0042] Refer to Figures 1-4 、 Figures 6-8 , which is basically the same as Embodiment One. Preferably, it is a specific implementation scheme for driving and adjusting the crushing knife 7.

[0043] The driving part includes: a positioning frame 5, fixedly connected to the fixed frame 1. A guiding groove 51 is formed on the positioning frame 5. Among them, a first motor 52 is fixedly connected to the positioning frame 5. The output end of the first motor 52 is fixedly connected to a stirring rod 53 fixedly connected to the crushing knife 7. The stirring rod 53 is rotatably connected to the filter plate 6. A pushing plate 54 is fixedly sleeved on the stirring rod 53. The pushing plate 54 is in contact with the filter plate 6.

[0044] Specifically: Before extracting the prickly ash fruit, the staff pours the prickly ash fruit into the hopper 4 and starts the first motor 52 by using an external control switch. When the output end of the first motor 52 rotates, it drives the stirring rod 53 to rotate. When the stirring rod 53 rotates, it drives the crushing knife 7 to rotate. When the crushing knife 7 rotates, it crushes the prickly ash fruit inside the hopper 4. At the same time, when the stirring rod 53 rotates, it drives the pushing plate 54 to rotate. When the pushing plate 54 rotates, it pushes the crushed prickly ash fruit to move. The smaller prickly ash fruit will fall into the extraction tank 2 through the through holes on the surface of the filter plate 6, while the larger prickly ash fruit moves from the center of the hopper 4 to the outside under the influence of the pushing plate 54 and moves through the discharge slot to the groove at the top of the guide plate 9.

[0045] Embodiment Three:

[0046] Refer to Figures 1-4 、 Figure 6 and Figure 8 and is basically the same as Embodiment One. Preferably, it is a specific implementation scheme for vertically reciprocating adjustment of the guide plate 9.

[0047] The linkage part includes: a connecting rod 10, rotatably connected to the guide plate 9. Among them, one end of the connecting rod 10 away from the guide plate 9 is rotatably connected to a circular plate 101. The connecting rod 10 is eccentrically connected to the circular plate 101. One side of the circular plate 101 is fixedly connected to a positioning rod 102. The positioning rod 102 is rotatably connected to the positioning frame 5; a first circular gear 103 fixedly sleeved on the positioning rod 102. Among them, a second circular gear 104 is meshed with the first circular gear 103. One side of the second circular gear 104 is fixedly connected to a transmission rod 105. The end of the transmission rod 105 away from the second circular gear 104 penetrates through the positioning frame 5 and is fixedly connected to a first bevel gear 106. A second bevel gear 107 is meshed with one side of the first bevel gear 106 away from the transmission rod 105. The second bevel gear 107 is fixedly sleeved on the stirring rod 53.

[0048] Specifically: When the stirring rod 53 drives the crushing knife 7 to crush the prickly ash fruits, it also drives the second bevel gear 107 to rotate. When the second bevel gear 107 rotates, it drives the first bevel gear 106 to rotate. When the first bevel gear 106 rotates, it drives the transmission rod 105 to rotate. When the transmission rod 105 rotates, it drives the second circular gear 104 to rotate. When the second circular gear 104 rotates, it drives the first circular gear 103 to rotate. Since the second circular gear 104 is smaller in volume and the first circular gear 103 is larger in volume, when the smaller-volume second circular gear 104 drives the larger-volume first circular gear 103 to rotate, the rotation speed of the first circular gear 103 is relatively slow. When the first circular gear 103 rotates, it drives the positioning rod 102 to rotate. When the positioning rod 102 rotates, it drives the circular plate 101 to rotate. When the circular plate 101 rotates, it drives one end of the connecting rod 10 to move around the axis of the circular plate 101. At this time, the other end of the connecting rod 10 drives the material guiding plate 9 to move vertically along the hopper 4 and the arc-shaped guiding plate 8. When the material guiding plate 9 moves upward to the designated position, the prickly ash fruits in the groove will fall downward into the hopper 4 for secondary crushing processing. Moreover, by using the smaller-volume second circular gear 104 to drive the larger-volume first circular gear 103 to rotate, the lifting speed of the material guiding plate 9 can be reduced, so as to ensure that there are sufficient prickly ash fruits in the groove and improve the quality of secondary crushing.

[0049] Embodiment 4:

[0050] Refer to Figure 1 , Figure 2 and Figure 9 and

[0051] A second motor 13 is fixedly installed on the fixing frame 1. The output end of the second motor 13 penetrates into the extraction tank 2 and is fixedly connected to the auger rod 11. A sealing bearing is fixedly sleeved on the output end of the second motor 13, and the outer ring of the sealing bearing is fixedly connected to the extraction tank 2. One end of the auger rod 11 away from the output end of the second motor 13 is rotatably connected to a limit disk 14, and a material guiding groove is formed on the limit disk 14.

[0052] Specifically: After all the prickly ash fruits to be crushed fall into the extraction tank 2, the staff closes the first solenoid valve and starts the second motor 13. When the output end of the second motor 13 rotates, it drives the auger rod 11 to rotate. When the auger rod 11 rotates, it drives the prickly ash fruits precipitated at the bottom of the extraction tank 2 to move upward. Moreover, under the action of the blocking strip 12, the prickly ash fruits can be limited. When the prickly ash fruits move upward along the auger rod 11 to the side without the blocking strip 12, under the influence of inertia, the prickly ash fruits spread to the periphery of the extraction tank 2 and fall, which can increase their contact surface with the solvent, thereby reducing the extraction time of prickly ash fruit oil and improving the processing efficiency.

[0053] A low-temperature subcritical extraction process for Prinsepia utilis Royle oil, the operation steps are as follows:

[0054] Step 1: Pour Prinsepia utilis Royle fruits into the hopper 4, and start the driving part by using an external control switch. The driving part drives the crushing knife 7 to rotate, capable of crushing the Prinsepia utilis Royle fruits.

[0055] Step 2: After crushing, the Prinsepia utilis Royle fruits smaller than the through holes of the filter plate 6 will fall downward into the extraction tank 2. The Prinsepia utilis Royle fruits larger than the through holes of the filter plate 6 will move outward along the center of the hopper 4 under the action of the push plate 54 and fall into the groove at the top of the guide plate 9.

[0056] Step 3: During continuous crushing, the driving part drives the linkage part to move, and the linkage part drives the guide plate 9 to move vertically along the hopper 4 and the arc guide plate 8, pushing the larger Prinsepia utilis Royle fruits upward and falling back into the hopper 4 for secondary crushing.

[0057] Step 4: After the crushed Prinsepia utilis Royle fruits fall into the inner cavity of the extraction tank 2, the staff pours the solvent into the extraction tank 2 and starts the second motor 13. The second motor 13 drives the auger rod 11 to rotate, capable of conveying the Prinsepia utilis Royle fruits deposited at the bottom of the extraction tank 2 upward, making them evenly spread in the extraction tank 2 and fully contact with the solvent, thereby reducing the extraction time of Prinsepia utilis Royle oil and improving the processing efficiency.

[0058] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A low-temperature subcritical extraction device for purslane oil, comprising a fixed frame (1) and an extraction tank (2) fixedly mounted on the fixed frame (1), a feed cylinder (3) connected to the extraction tank (2) being fixedly connected to the fixed frame (1), a first solenoid valve being fixedly sleeved on the discharge end of the feed cylinder (3), characterized in that: Also includes: A hopper (4) is installed in the feed barrel (3), and a filter plate (6) is fixedly connected to the bottom of the hopper (4). The hopper (4) is provided with a crushing knife (7) for crushing the prickle, and the fixed frame (1) is provided with a driving part for driving the crushing knife (7) to rotate along the axis of the hopper (4); An arc-shaped guide plate (8) is fixedly connected to the feed barrel (3) and is symmetrically arranged along the axis of the feed barrel (3). A limiting groove is provided on the arc-shaped guide plate (8). A guide plate (9) in contact with the hopper (4) is slidably connected in the limiting groove, a groove is provided on the guide plate (9), and a linkage part is provided on the guide plate (9). When the linkage part moves, the guide plate (9) moves vertically along the arc guide plate (8) to push the green thorn fruit into the hopper (4); An auger rod (11) is rotatably mounted in the extraction tank (2), and a retaining bar (12) is fixedly connected to the auger rod (11).

2. A low-temperature subcritical extraction device for utilitarian fruit oil according to claim 1, characterized in that: The driving unit comprises: A positioning frame (5) is fixedly connected to the fixing frame (1), and a guide groove (51) is provided on the positioning frame (5). The positioning frame (5) is fixedly connected to a first motor (52), an output end of the first motor (52) is fixedly connected to a stirring rod (53) fixedly connected to the crushing knife (7), and the stirring rod (53) is rotatably connected to the filter plate (6).

3. A low-temperature subcritical extraction device for utilitarian fruit oil according to claim 2, characterized in that: A push plate (54) is fixedly sleeved on the stirring rod (53), and the push plate (54) is in contact with the filter plate (6).

4. A low-temperature subcritical extraction device for utilitarian fruit oil according to claim 1, characterized in that: The linkage unit comprises: A connecting rod (10) is rotatably connected to the guide plate (9). The end of the connecting rod (10) away from the guide plate (9) is rotatably connected to a circular plate (101), the connecting rod (10) is eccentrically connected to the circular plate (101), one side of the circular plate (101) is fixedly connected to a positioning rod (102), and the positioning rod (102) is rotatably connected to the positioning frame (5); a first circular gear (103) fixedly sleeved on the positioning rod (102), The first circular gear (103) is meshedly connected with a second circular gear (104); one side of the second circular gear (104) is fixedly connected with a transmission rod (105); one end of the transmission rod (105) away from the second circular gear (104) passes through the positioning frame (5) and is fixedly connected with a first bevel gear (106); one side of the first bevel gear (106) away from the transmission rod (105) is meshedly connected with a second bevel gear (107); and the second bevel gear (107) is fixedly sleeved on the stirring rod (53).

5. The low-temperature subcritical extraction equipment for utilitarian fruit oil according to claim 1, characterized in that: A second motor (13) is fixedly mounted on the fixing frame (1); an output end of the second motor (13) penetrates into the extraction tank (2) and is fixedly connected to the auger rod (11); a sealed bearing is fixedly sleeved on the output end of the second motor (13), and an outer ring of the sealed bearing is fixedly connected to the extraction tank (2).

6. The low-temperature subcritical extraction equipment for utilitarian fruit oil according to claim 5, characterized in that: One end of the auger rod (11) away from the output end of the second motor (13) is rotatably connected to a limit plate (14), and a material guide groove is provided on the limit plate (14).

7. The low-temperature subcritical extraction equipment for utilitarian fruit oil according to claim 1, characterized in that: A discharge trough is provided between the hopper (4) and the filter plate (6), and the number of the discharge troughs is two.

8. The low-temperature subcritical extraction equipment for utilitarian fruit oil according to claim 1, characterized in that: The extraction tank (2) is fixedly connected to a discharge pipe (15), and a second solenoid valve is fixedly sleeved on the discharge pipe (15).

9. The low-temperature subcritical extraction equipment for utilitarian fruit oil according to claim 1, characterized in that: Two material guide shells (16) are fixedly connected inside the material feeding barrel (3); the inner arc surface of the material guide shell (16) is fixedly connected to the hopper (4); and an inclined groove is provided on the material guide shell (16).

10. An extraction process, using the low-temperature subcritical extraction equipment for utila prickle oil according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Pour the thorn fruit into the hopper (4), and use an external control switch to start the driving unit, which drives the crushing knife (7) to rotate, so as to crush the thorn fruit; Step 2: After the crushing is completed, the prickly ash fruit smaller than the through hole of the filter plate (6) will fall downward into the extraction tank (2), and the prickly ash fruit larger than the through hole of the filter plate (6) will move outward along the center of the hopper (4) under the action of the push plate (54) and fall into the groove on the top of the guide plate (9); Step 3: During the continuous crushing process, the driving part drives the linkage part to move, and the linkage part drives the guide plate (9) to move vertically along the hopper (4) and the arc guide plate (8), pushing the green thorn fruit with a larger volume upward and dropping it into the hopper (4) again for secondary crushing; Step 4: After the broken prickle fruit falls into the inner cavity of the extraction tank (2), the staff pours the solvent into the extraction tank (2) and starts the second motor (13). The second motor (13) drives the auger (11) to rotate, so that the prickle fruit deposited at the bottom of the extraction tank (2) can be transported upward, so that it is evenly spread in the extraction tank (2) and fully contacted with the solvent, thereby reducing the extraction time of the prickle fruit oil and improving the processing efficiency.

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