Production process of camellia oil rich in highly unsaturated fatty acids

Abstract

The invention discloses a production process of camellia oil rich in highly unsaturated fatty acids, and belongs to the technical field of camellia oil production. Comprising four treatment steps of fruit selection, husking, grinding and squeezing, and through multiple links of raw material selection, impurity removal, fine processing, refining and the like, high quality, safety and health of the camellia oil are ensured. The finally obtained finished product camellia oil is rich in nutrition and pure in taste. By arranging the oil pressing device, automation of tea cake pressing is achieved, and the tea cake pressing efficiency is improved. In the squeezing process, only each tea cake needs to be pushed into the linear rail through the head end of the main body base table, and the tea cakes are squeezed for multiple times through the cooperation of the feeding assembly and the pushing and pressing assembly. In the squeezing process, an outer lug plate on the squeezing assembly is stirred through an outer rack, so that the squeezing assembly slides towards the tail end of the main body base table and is matched with the pushing assembly to apply pressure to the whole squeezing assembly, and therefore tea cakes are squeezed while the squeezing assembly is fed.

Description

Technical Field

[0001] The invention relates to a production process of camellia oil rich in highly unsaturated fatty acids, belonging to the technical field of camellia oil production. Background Art

[0002] Camellia oil, also known as wild camellia oil, tea seed oil, and oil tea seed oil, has a high content of unsaturated fatty acids and has many benefits to the human body. There are two ways to extract camellia oil: pressing and leaching. The main principle of both methods is to destroy the cell structure inside the tea tree seeds, so that the tea tree seeds can secrete tea oil.

[0003] When using the pressing method to extract oil, it is usually necessary to grind the camellia seeds into powder and then pack them into tea cakes, which are then squeezed by external force to make the tea cakes secrete tea oil. The whole process is relatively simple to operate, and the subsequent camellia crude oil is easier to handle than the leaching method. However, the general pressing method can usually only squeeze a fixed number of tea cakes at a time, and it takes a lot of time to change the tea cakes to be squeezed each time, and the pressing efficiency is low. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a production process of camellia oil rich in highly unsaturated fatty acids, which solves the problem of low efficiency of producing camellia oil by pressing in the prior art.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical solution: A production process of camellia oil rich in highly unsaturated fatty acids, comprising the following steps:

[0006] S1. After the picked camellia fruits are dried in the sun, the camellia fruits with full grains and no shriveling are selected as raw materials;

[0007] S2, removing impurities such as stones, stems, mud and the like from camellia seeds, and shelling the camellia seeds;

[0008] S3, grinding and crushing the shelled camellia seeds and steaming them at high temperature, steaming the camellia seed powder with 110° C. steam to obtain camellia powder, shaping the camellia powder into round tea cakes with the same diameter, and sequentially placing the tea cakes into an oil pressing device for pressing to obtain crude camellia oil;

[0009] S4, the crude oil and phosphoric acid are fully mixed, and the mixture is put into an acid reaction tank for acidification, and the acid value after acidification is measured. The temperature of the crude oil reaction tank is 100°C;

[0010] S5, sending the crude oil acidified in S4 to an alkali refining tank for alkalization, passing through an alkali refining mixer, and observing the state of the soap nuts;

[0011] S6, sending the alkalized crude oil in S5 into a soap removal centrifuge for oil-soap separation, and washing and dehumidifying the crude oil after the soap nuts are separated;

[0012] S7, winterizing the crude oil obtained in S6, after the temperature in the winterization pot drops to 5°C, performing low-temperature crystallization for 24 hours, and then filtering through a filter to obtain the winterized crude oil;

[0013] S8, after decolorizing and deodorizing the crude oil obtained in S7, a finished tea oil is obtained.

[0014] By adopting the above technical solution, the camellia oil preparation process ensures the high quality, safety and health of the camellia oil through multiple links such as selecting raw materials, removing impurities, fine processing and refining. The final finished camellia oil is not only rich in nutrition but also has a pure taste.

[0015] The present invention also provides a technical solution, the oil pressing device comprises: a main body base, a pair of linear tracks are arranged in the middle part of the main body base, and a feeding assembly and a pushing assembly are arranged at the head and tail ends respectively; an extraction assembly comprises a filling disc with a filling groove, and a pressure disc concentrically assembled on the filling disc, the tea cake is clamped and fixed in the filling disc groove by the filling disc and the pressure disc, and the head and tail end faces of a plurality of the extraction assemblies are fitted to each other and are slidably arranged on the linear tracks; a limit table is arranged near the pushing group and at On the main body base on both sides of the linear slide rail, the support platform is provided with limiting sleepers for limiting the subsequent squeezing components when the squeezing components are unloading; wherein, the feeding component includes a rotatable feeding gear plate equidistantly arranged in the circumferential direction of the squeezing component, which is used to push the squeezing component into the linear slide rail and apply pressure to the squeezing component; the outer ear plates extending toward the outer circle in the circumferential direction of the containing disc are equal in number to the feeding gear plates, and the outer ear plates abut against the outer racks on the feeding gear disc when feeding.

[0016] By adopting the above technical scheme, the single-time pressing method used in the traditional pressing method is changed, and the high automation of tea cake pressing is achieved, which improves the pressing efficiency of tea cake. During the pressing process, each tea cake only needs to be pushed into the linear track through the head end of the main base, and the tea cake is pressed multiple times by the feeding component and the pushing component. During the pressing process, the feed gear plate rotates continuously, and the outer ear plate on the pressing component is moved by the external rack, so that the pressing component slides toward the tail end of the main base, and the entire pressing component is pressed in cooperation with the pushing component, thereby realizing the pressing of the tea cake while the pressing component is feeding. During the entire pressing process, the tea cake can always withstand the pressure at both ends, thereby improving the oil output efficiency of the tea cake. The tea cake is placed in the pressing component, so that the tea oil produced by the pressing is directly collected through the pressing component, and the tea oil does not need to be collected through other external collection devices, which avoids the tea oil from being contaminated by the external environment and ensures the quality of the tea oil.

[0017] The present invention is further configured such that the feeding assembly also includes: a fixed disc, which is arranged at the head end of the main body base, a feed hole is arranged at the center of the fixed disc for the extraction assembly to pass through, a driving component, which is arranged on the fixed disc of the outer circle of the feed hole, and the driving component includes a driving table, the driving table is connected to two support plates, and the feed gear plate is rotatably arranged between the two support plates and is driven to rotate by the driving component.

[0018] By adopting the above technical solution, it is ensured that the tea cake can maintain the corresponding pressure while loading, and the pressure will not disappear when the tea cake is loaded, so that the entire tea cake can always maintain a relatively reasonable pressure from feeding to discharging, so that the tea cake can continue to produce oil during the entire pressing process. After the pressing component is loaded into the tea cake, it enters the linear track through the head end of the main base, and through the center hole of the fixed disc. When the feed gear disc rotates, the outer rack on the outer ring of the feed gear disc drives the outer ear plate on the outer ring of the containing disc, so that the entire pressing device is pushed into the pressing stroke. At the same time, the pushing component at the rear end of the main base also presses the pressing component on the rear end linear track, so that the pressing component between the pushing component and the feeding component can be continuously pressurized, ensuring that the tea cake can be fully squeezed.

[0019] The present invention is further configured such that the pushing assembly includes: a fixed platform with an installation inner cavity, which is arranged at the tail end of the main body base; the installation inner cavity of the fixed platform is provided with a driver, a thrust telescopic rod, which is connected to the driver; the axis line of the thrust telescopic rod intersects with the center of the squeezing assembly slidably arranged on the linear guide rail.

[0020] By adopting the above technical scheme, the pushing component is the main pressure source of the entire pressing device. The pushing component pushes the squeezing component at the rear end of the main base, and cooperates with the feeding component at the head end of the main base to apply pressure to the squeezing component between the two. The squeezing components fit together and concentrated pressure is applied. The horizontally placed linear track makes the squeezing components on the linear track experience the same pressure, and the situation where the oil yield of the tea cake in a single squeezing component is reduced due to too low pressure will not occur.

[0021] The present invention is further configured such that an oil drain groove is provided in the outer ring area of ​​the containing groove, an annular filter is provided in the oil drain groove, the oil drain groove is connected to an oil drain channel, and the oil drain channel is connected to the inner cavity of the oil storage shell arranged on the back of the containing disc.

[0022] By adopting the above technical solution, the oil drain groove can collect the tea oil that is squeezed out, and the tea oil flows from the oil drain channel connected to the oil drain groove to the inner cavity of the oil storage shell after passing through the oil drain groove, so that the tea oil can be quickly collected. The annular filter screen arranged in the oil drain groove can perform preliminary filtering on the tea oil, and can prevent impurities from entering the oil drain channel and blocking the oil drain channel.

[0023] The present invention is further configured such that a ball core plug is provided in the oil discharge channel, and the ball core plug is connected to a tightening spring.

[0024] By adopting the above technical solution, the tea oil can be prevented from flowing back. Since the containing disc and the pressure disc adopt a closed sliding, the pressure disc will squeeze out the air in the containing disc through the oil discharge channel while applying pressure to the tea cake. Therefore, the ball core plug can prevent the tea oil that has entered the oil storage shell from flowing back into the containing disc due to external pressure when the pressure disc and the containing disc are separated.

[0025] The present invention is further configured such that the pressure plate includes a main board, and a plurality of pressure plates with different apertures are stacked on the main board, the outermost pressure plate has the smallest aperture, the innermost pressure plate has the largest aperture, the pressure plate with the largest aperture is fixed on the pressure plate, and pressure springs are arranged between the remaining pressure plates and the main board.

[0026] By adopting the above technical solution, the tea cake is squeezed by multiple layers of pressure plates, and the squeezing force of each layer gradually increases, so as to fully squeeze the tea cake. During the squeezing process, the pressure plate with the smallest aperture is first pressed against the tea cake. Due to the pressure, the pressed tea cake extends outward in the circumferential direction, and the diameter of the tea cake expands. At this time, the first pressure plate is completely retracted into the second pressure plate with a larger aperture. The pressure plate with a larger aperture squeezes the tea cake that extends and spreads outward again, so that the outer circle of the tea cake can also be squeezed more fully, so that the oil yield of the tea cake is improved.

[0027] The present invention is further configured as follows: the linear slide rail includes a support platform, a trapezoidal fixed platform is provided on the support platform, a circular slide rod is provided on the trapezoidal fixed platform, the pressure plate and the outer ring wall of the containing circular plate are both provided with outwardly extending claws, the claws are provided with a clamping hole for clamping the circular slide rod, and the clamping hole is provided with an opening with an arc smaller than the length of its own semi-circular arc.

[0028] By adopting the above technical solution, the squeezing component is slidably connected to the circular slide bar through the claw, so that the entire squeezing component can slide smoothly, reducing the influence of the frictional external force generated during the squeezing process of the squeezing component. The circular slide bar can also guide the squeezing component. When the squeezing component is fed, the squeezing component can be quickly placed on the straight track through the end extending from the circular slide bar. An opening with an arc smaller than the length of the semicircular arc is set on one side of the claw, so that the claw can slide smoothly on the straight track.

[0029] The present invention is further configured such that a shrinkage shell is fittedly provided at the position where the claws are provided on the containing disc, a strip slider is slidably provided inside the shrinkage shell, one end of the strip slider sliding inside the shrinkage shell is connected to a stress spring, and the other end is connected to an arc-shaped limit block.

[0030] By adopting the above technical solution, the arc-shaped limit block can limit the tea cake at the center of the serving disc, so that the tea cake is always in the center when it is squeezed. After the tea cake is compressed, when the outer circle extends outward, it can spread more evenly, and the center of the tea cake can always be kept in the center of the serving disc, making the squeezing surface more uniform.

[0031] The beneficial effect of the present invention is that the tea cake contained in the squeezing component can be continuously loaded and unloaded and squeezed by setting the feeding component in cooperation with the pushing component, thereby improving the squeezing efficiency of the entire tea cake. During the squeezing process, the squeezing component moves on a linear track, enters from the head end of the main body base, and is discharged from the tail end. The entire squeezing process maintains continuous loading and unloading, and with the assistance of the limiting sleepers, the tea cake can always be under pressure during the entire squeezing process, and the phenomenon of the tea cake pressure disappearing or decreasing will not occur during unloading and loading.

[0032] Through the setting of the extraction component, the containing disc cooperates with the pressure disc, so that the tea cake can be squeezed in layers and steps. The pressure of the pressure springs installed between each layer of pressure plate and the main board increases layer by layer, and the pressure of the pressure springs in the bottom layer is the largest, thereby realizing a squeezing process with increasing pressure layer by layer. At the same time, after the tea cake is pressed, the outer circle diffuses, and the subsequent pressure plates can squeeze the diffused area of ​​the tea cake again, ensuring that all areas of the tea cake can be squeezed more fully.

[0033] By setting up the oil discharge channel and the ball core plug, the tea oil produced by pressing can directly enter the oil storage shell through the oil discharge channel, avoiding the tea oil production and collection process from being contaminated by the external environment, and ensuring the output quality of the tea oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0035] Figure 2 A top view of the present invention;

[0036] Figure 3 It is a schematic diagram of the three-dimensional structure of the serving disk of the present invention;

[0037] Figure 4 is a side cross-sectional view of the extraction assembly of the present invention;

[0038] Figure 5 It is a schematic diagram of the three-dimensional structure of the pressure disc of the present invention;

[0039] Figure 6 For the present invention Figure 4 A schematic diagram of the enlarged structure in the middle.

[0040] In the figure: 1. Main body base; 2. Linear rail; 3. Feeding assembly; 4. Pushing assembly; 5. Extracting assembly; 6. Limiting platform; 7. Limiting sleeper; 8. Clamping claw; 9. Tea cake; 10. Annular filter; 201. Circular slide bar; 202. Support platform; 203. Trapezoidal fixed platform; 301. Feed gear plate; 302. Fixed disc; 303. Driving component; 401. Fixed platform; 402. Driver; 403. Thrust telescopic rod; 501. Serving disc; 502. Pressure disc; 503. Oil drain valve; 701. Auxiliary handle ; 702, plug-in hole; 703, semicircular limit plate; 801, clamping hole; 3011, external rack; 3021, feed hole; 3031, driving table; 3032, support plate; 5011, external ear plate; 5012, oil drain groove; 5013, oil drain channel; 5014 oil storage shell; 5015, ball core plug; 5016, tightening spring; 5017, shrinkage shell; 5018, strip slider; 5019, arc limit block; 5010, holding tank; 5021, main board; 5022, pressure plate; 5023, pressure spring. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0042] A production process of camellia oil rich in highly unsaturated fatty acids comprises the following preparation steps:

[0043] S1. After the camellia fruits are picked and dried, the ones with full grains and no shriveling are selected as raw materials to ensure the basic quality of camellia oil. Such raw materials contain richer nutrients and fewer impurities, which is conducive to maintaining the purity and quality of the oil in the subsequent processing process.

[0044] S2. Remove impurities such as stones, stems, mud and so on from camellia seeds, and shell the camellia seeds at the same time; this can effectively reduce the physical contamination in camellia oil and improve the cleanliness and safety of the oil.

[0045] S3, grinding and crushing the shelled camellia seeds and steaming them at high temperature, steaming the oil camellia seed powder with 110°C steam to obtain the camellia powder after steaming, shaping the camellia powder into round tea cakes 9 with the same diameter, and sequentially placing the tea cakes 9 into the oil pressing device for pressing to obtain the camellia crude oil; grinding and crushing ruptures the cell walls of the camellia seeds, which is conducive to the full release of oil. High-temperature steaming can further promote the precipitation of oil, and at the same time shape the camellia powder into a uniform round tea cake 9, which is convenient for subsequent pressing operations. Such a treatment method helps to improve the oil yield of camellia oil and the stability of the oil product.

[0046] S4. Fully mix the crude oil and phosphoric acid, put them into the acid reaction tank for acidification, and measure the acid value after acidification. The temperature of the crude oil reaction tank is 100°C. At this time, the crude oil floats up, generally showing two phenomena, one is covering the entire tank liquid surface, and the other is more intensely concentrated around the rotating shaft, with less tank wall.

[0047] S5. Send the crude oil acidified in S4 to the alkali refining tank for alkalization. After passing through the alkali refining mixer, observe the state of the soap nuts, check whether the soap nuts are emulsified, whether the pH value of the alkali solution is reasonable, maintain the water temperature balance, and avoid emulsification.

[0048] S6, sending the alkalized crude oil in S5 to a soap removal centrifuge for oil-soap separation. During separation, if the exported soap nuts are too dry, open the water valve and add an appropriate amount of water until the extraction is smooth, and measure the acid value at the soap nuts separation point. After the soap nuts are separated, wash the crude oil with water and dehumidify;

[0049] S7, the crude oil obtained in S6 is winterized, first open the winterization tank valve, open the blower and stir, then open the buffer tank valve, after the crude oil is sent into the winter tank, close the winterization tank valve and turn off the blower etc., open the condenser and pass into cold air cooling, the temperature reaches the rear low-temperature crystallization 24h, then carry out plate and frame filter to filter, then filter the crude oil after winterization by filter to obtain;

[0050] S8, after decolorizing and deodorizing the crude oil obtained in S7, a finished tea oil is obtained.

[0051] like Figure 1As shown, the oil pressing device includes a main body base 1, a pair of linear rails 2 are symmetrically arranged at the center line position of the length direction of the main body base 1, and the squeezing components 5 are slidably connected to the linear rails 2. A plurality of squeezing components 5 are attached to each other head to tail, and a feeding component 3 and a pushing component 4 are respectively arranged at the head and tail ends of the main body base 1. On the main body base 1 at one end of the pushing component 4, on both sides of the linear slide rail, a limiting platform 6 is also fixedly installed, and a limiting sleeper 7 can be detachably inserted on the limiting platform 6, which is used to limit the subsequent squeezing components 5 when the squeezing components 5 are unloaded, so as to maintain the pressure of the subsequent squeezing components 5.

[0052] In this embodiment, the linear slide rail includes three sections, namely the feeding section located at the right end of the feeding component 3, the unloading section located at the left end of the limiting platform 6, and the pressing section between the unloading section and the loading section. During pressing, the feeding component 3 delivers the pressing component 5 from the feeding section to the pressing section.

[0053] like Figure 1 As shown, the limiting sleeper 7 includes an auxiliary handle 701, a plug-in hole 702 and a semicircular limiting plate 703. The auxiliary handle 701 is wrapped with a wear-resistant layer to facilitate workers to lift it. When unloading is required, the limiting sleeper 7 is plugged into the groove of the limiting platform 6, and the plug-in hole 702 is aligned with the limiting rod during the plugging process. The remaining squeezing component 5 is blocked on the other side by the semicircular limiting plate 703, so that the thrust telescopic rod 403 can be retracted, thereby removing the squeezing component 5 to be removed from the linear slide rail.

[0054] like Figure 1 and Figure 2 As shown, the main base 1 is mainly used to fix and install each component. The linear track 2 is used to transmit the squeezing component 5, so that the squeezing component 5 can smoothly realize synchronous feeding when being squeezed. The squeezing component 5 can directly squeeze the tea cake 9, and can directly collect the squeezed tea oil without letting the tea oil flow to the outside, avoiding the external environment from polluting the tea oil, and facilitating further processing of the subsequent tea oil. The pushing component 4 is the main source of pressure. The squeezing component 5 mainly applies pressure through the thrust component to achieve the squeezing of the tea cake 9. The feeding component 3 is used to push the squeezing component 5 into the squeezing section of the linear track 2, while maintaining the squeezing force when the squeezing component is pushed in. The outer ear plate 5011 equal to the number of the feed gear plate 301 is extended to the outer circle in the circumferential direction of the containing disc 501, and the outer ear plate 5011 abuts against the outer rack 3011 on the feed gear plate 301 during feeding.

[0055] The feed assembly 3 includes a rotatable feed gear disc 301 equidistantly arranged in the circumferential direction of the extraction assembly 5, and also includes a fixed disc 302 installed at the head end of the main body base 1. The fixed disc 302 and the main body base 1 are connected by a triangular support plate 3032 through welding to improve the lateral support strength of the fixed disc 302. A feed hole 3021 is arranged at the center of the fixed disc 302 for the extraction assembly 5 to pass through. A driving component 303 is installed in the circumferential direction of the fixed disc 302. The driving component 303 includes a driving round table 3031. The driving round table 3031 is connected to two support plates 3032. The rotatable feed gear disc 301 is rotatably arranged between the two support plates 3032 and driven to rotate by the driving component 303.

[0056] In this embodiment, the driving component 303 drives the feeding gear plate 301 to rotate. During the rotation of the feeding gear plate 301, the outer rack 3011 abuts against the outer ear plate 5011 of the outer ring of the loading disc 501, and the entire squeezing assembly 5 is pushed into the squeezing section of the linear track 2 by pushing the outer ear plate 5011. During the pushing process, the squeezing assembly 5 at the front end of the pushed squeezing assembly 5 is still abutted by the outer rack 3011, and the squeezing force can be continuously maintained. When the pushed squeezing assembly 5 abuts against the end face of the squeezing assembly 5 at its front end, the outer rack 3011 separates from the outer ear plate 5011 on the squeezing assembly 5 at the front end of the pushed squeezing assembly 5, completing the feeding process of a squeezing assembly 5. By repeatedly pushing the squeezing assembly 5 and continuously discharging the squeezed squeezing assembly 5 in the unloading section, the entire squeezing is continuously carried out, which speeds up the squeezing of the tea cake 9 and improves the squeezing efficiency.

[0057] like Figure 2 As shown, the pushing assembly 4 includes a fixed platform 401 with an installation cavity, which is arranged at the tail end of the main base 1. The installation cavity of the fixed platform 401 is provided with a driver 402 and a thrust telescopic rod 403, which is connected to the driver 402. The axis of the thrust telescopic rod 403 intersects with the center of the squeezing assembly 5 slidably arranged on the linear guide rail. The squeezing assembly 5 at the leftmost end of the linear track 2 is abutted and pushed by the thrust telescopic rod 403, so as to realize squeezing of the grabbing assembly on the entire linear track 2. The center lines of the squeezing assemblies 5 on the linear track 2 are all overlapped with each other, which can avoid deviation when the entire squeezing force is transmitted, so that the squeezing forces received by all the squeezing assemblies 5 during the entire squeezing process are in the same linear direction, thereby improving the stability of the entire squeezing device.

[0058] like Figure 4As shown, the squeezing assembly 5 includes a filling disc 501 with a filling groove 5010, and a pressure disc 502 concentrically assembled on the filling disc 501. The tea cake 9 is clamped and fixed in the groove of the filling disc 501 by the filling disc 501 and the pressure disc 502. The head and tail end faces of multiple squeezing assemblies 5 fit each other and are slidably arranged on the linear track 2. Each squeezing assembly 5 is fed in sequence to achieve continuous squeezing. The filling disc 501 and the pressure disc 502 are spliced ​​in a sliding seal. When the pressure disc 502 is spliced ​​with the filling disc 501, the air inside the filling disc 501 can only be discharged through the oil drain groove 5012.

[0059] like Figure 3 As shown, an oil drain groove 5012 is provided in the outer ring area of ​​the containing groove 5010, an annular filter screen 10 is provided in the oil drain groove 5012, and the oil drain groove 5012 is connected to an oil drain channel 5013, and the oil drain channel 5013 is connected to the inner cavity of the oil storage shell 5014 provided on the back of the containing disc 501.

[0060] The oil discharge channel 5013 is arranged on one side of the oil discharge groove 5012. When the pressing assembly 5 is slidably connected to the linear slide rail, the oil discharge channel 5013 is just at the bottom. The tea oil produced by the tea cake 9 after being pressed enters the oil discharge groove 5012 after being filtered by the annular filter 10. Since the pressing assembly is slidably connected to the linear slide rail, the tea oil entering the oil discharge groove 5012 flows to the bottom of the oil discharge groove 5012 under the action of gravity, and presses open the ball core plug 5015 under the action of pressure, and enters the oil storage shell 5014 through the oil discharge channel 5013.

[0061] An oil drain valve 503 is installed on the oil storage shell 5014. When the pressing assembly is removed from the linear slide rail after being pressed, the tea oil in the oil storage shell 5014 is discharged by controlling the oil drain valve 503.

[0062] like Figure 6 As shown, a ball plug 5015 is provided in the oil discharge channel 5013, and the ball plug 5015 is connected to a tightening spring 5016. The ball plug 5015 is supported by the tightening spring 5016 to block the oil discharge channel 5013. When tea oil from the outside enters, the ball plug 5015 is pushed open under the action of high pressure, and the tea oil can enter the inner cavity of the oil storage shell 5014 through the oil discharge channel 5013. When the tea oil is discharged, the ball plug 5015 is pushed back to its original position to block the oil discharge channel 5013, so as to prevent the tea oil in the inner cavity of the oil storage shell 5014 from flowing back.

[0063] like Figure 5As shown, the pressure plate includes a main board 5021, and a plurality of pressure plates 5022 with different apertures are stacked on the main board 5021. The outermost pressure plate 5022 has the smallest aperture, and the innermost pressure plate 5022 has the largest aperture. The pressure plate 5022 with the largest aperture is fixed on the pressure plate, and a pressure spring 5023 is arranged between the remaining pressure plates 5022 and the main board 5021. The pressure spring 5023 abutting against the pressure plate 5022 with the smallest aperture has the smallest elastic coefficient and the largest elastic expansion amount. The elastic coefficient of the pressure spring 5023 abutting against the remaining pressure plates 5022 increases as the aperture increases, and the elastic expansion amount decreases as the aperture increases. The elastic force of the spring is proportional to the elastic coefficient and the compression amount. During the squeezing process, the elastic coefficient of the pressure spring 5023 with a large compression amount is small, so that the rebound force of each pressure spring 5023 on the pressure plate 5022 can be kept at the same strength. By arranging the pressure spring 5023 in this way, when the tea cake 9 is pressed by different pressure plates 5022 , the elastic force between each pressure plate 5022 can always remain basically consistent, so that the pressing force of the tea cake 9 is sufficiently uniform.

[0064] like Figure 1 and Figure 3 As shown, the linear slide includes a support platform 202, a trapezoidal fixed platform 401203 is arranged on the support platform 202, a circular slide bar 201 is arranged on the trapezoidal fixed platform 401203, and a clamping claw 8 extending outward is arranged on the outer wall of the pressure plate and the containing disc 501, and a clamping hole 801 for clamping the circular slide bar 201 is arranged on the clamping claw 8, and the clamping hole 801 is provided with an opening of an arc less than the length of the semicircular arc. Since the bottom of the circular slide bar 201 is connected to the trapezoidal fixed platform 401203, and the opening is provided, when the clamping hole 801 on the clamping claw 8 is slidably clamped with the circular slide bar 201, the arc opening arranged at the position of the clamping hole 801 just corresponds to the part of the circular slide bar 201 connected to the trapezoidal fixed platform 401203, so that the clamping claw 8 can slide smoothly on the circular slide bar 201.

[0065] like Figure 3 As shown, a shrinking shell 5017 is fitted at the position where the claw 8 is provided on the filling disc 501, and a strip slider 5018 is slidably provided in the shrinking shell 5017. One end of the strip slider 5018 is connected to a stress spring when sliding in the shrinking shell 5017, and the other end is connected to an arc-shaped limit block 5019. The arc-shaped limit block 5019 can limit the tea cake 9 at the center of the filling groove 5010 to prevent the tea cake 9 from deviating during the squeezing process.

[0066] Working principle: tea oil seeds are first screened, then ground and steamed to make tea cakes 9, which are then put into the filling groove 5010 of the filling disc 501, and placed in the middle position of the filling groove 5010 through an arc-shaped limit card. The pressure disc 502 and the filling disc 501 are spliced ​​together, so that the tea cake 9 is pressed in the filling groove 5010 of the filling disc 501, and a sealed sliding arrangement is adopted between the pressure disc 502 and the filling disc 501, and magnetic rings with opposite magnetic poles are respectively arranged on the outer rings of the disc end faces of the pressure disc 502 and the filling disc 501, so that after the pressure disc 502 and the filling disc 501 are spliced ​​together, they can maintain a relatively stable splicing under the mutual attraction of the magnetic rings.

[0067] After the tea cake 9 is successfully loaded into the loading groove 5010 of the loading disc 501, the entire squeezing assembly 5 is inserted into the center slide bar through the clamping hole 801 on the clamping claw 8, and the entire squeezing assembly 5 is pushed, and through the guiding effect of the center slide bar, it enters the squeezing area of ​​the linear track 2 from the feed hole 3021 of the fixed disc 302. When the squeezing assembly 5 passes through the feed hole 3021, the feed gear disc 301 rotates, so that the outer rack 3011 and the outer ear plate 5011 abut against each other, so that the outer ear plate 5011 is pushed by the outer rack 3011, and the entire squeezing assembly 5 is pushed to the squeezing area.

[0068] After the squeezing assembly 5 enters the squeezing area, the feed gear plate 301 stops rotating, and the pushing assembly 4 applies pressure to the squeezing assembly 5 at the rearmost end of the linear track 2. Since the adjacent squeezing assemblies 5 fit each other, the pressure is transmitted to each squeezing assembly 5, thereby applying pressure to all squeezing assemblies 5. During the pressure application process, when the gap between the squeezing assemblies 5 at the rear end of the main body base 1 moves to the position facing the stopper of the limit platform 6, the stopper sleeper 7 is inserted into the stopper of the limit platform 6, and the squeezing assembly 5 at the right end of the limit platform 6 is limited by the stopper sleeper 7 and maintained in a compressed state. At this time, the thrust telescopic rod 403 on the pushing assembly 4 is controlled to contract, and the single squeezing assembly 5 at the left end of the limit platform 6 loses the pressure, and then the leftmost squeezing assembly 5 is removed. After removing the squeezing component 5, the thrust telescopic rod 403 is re-controlled to extend outward, to support the squeezing component 5 limited by the limited sleeper 7, and to apply a certain thrust to it, so that the limited sleeper 7 is separated from the contact surface of the squeezing component 5, thereby removing the limited sleeper 7. At this time, another squeezing component 5 is inserted from the right end of the main base 1 through the feeding component 3, and the above steps are repeated, so as to realize the continuous squeezing of the tea cake 9.

[0069] When the squeezing component 5 is under force, the pressure plate 5022 with the smallest aperture first applies pressure to the tea cake 9. While the tea cake 9 is flattened, the pressure plate 5022 with the smallest aperture contracts toward the inside of the pressure plate 5022 with a larger aperture, so that the pressure plate 5022 with a larger aperture contacts the edge of the tea cake 9 that extends outward after being pressed, and applies pressure to the outer edge of the tea cake 9. The tea cake 9 continues to be compressed and diffused, and is squeezed again by the pressure plate 5022 with a larger aperture. The tea cake 9 is squeezed in layers by the layers of pressure plates 5022, so that the tea cake 9 can be squeezed more fully. Since the spring elastic coefficient on the pressure plate 5022 with the smallest aperture is the smallest, during squeezing, as the compression of the spring gradually increases, the spring rebound force also gradually increases, and the spring installed on the pressure plate 5022 with the smallest aperture has the largest expansion and contraction amount. Therefore, by changing the spring elastic coefficient, the situation in which the squeezing force of each layer of spring pressure plate 5022 is different due to springs with different compression amounts is avoided, so that the force on the entire tea cake 9 is evenly distributed and can be squeezed more completely.

[0070] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A production process of camellia oil rich in highly unsaturated fatty acids, characterized in that: The steps include: S1. After the picked camellia fruits are dried in the sun, the camellia fruits with full grains and no shriveling are selected as raw materials; S2, removing impurities such as stones, stems, mud and the like from camellia seeds, and shelling the camellia seeds; S3, grinding and crushing the shelled camellia seeds and steaming them at high temperature, steaming the camellia seed powder with steam at 110° C. to obtain camellia powder, shaping the camellia powder into round tea cakes (9) with the same diameter, and sequentially placing the tea cakes (9) into an oil pressing device for pressing to obtain crude camellia oil; S4, the crude oil and phosphoric acid are fully mixed, and the mixture is put into an acid reaction tank for acidification, and the acid value after acidification is measured. The temperature of the crude oil reaction tank is 100°C; S5, sending the crude oil acidified in S4 to an alkali refining tank for alkalization, passing through an alkali refining mixer, and observing the state of the soap nuts; S6, sending the alkalized crude oil in S5 into a soap removal centrifuge for oil-soap separation, and washing and dehumidifying the crude oil after the soap nuts are separated; S7, winterizing the crude oil obtained in S6, after the temperature in the winterization pot drops to 5°C, performing low-temperature crystallization for 24 hours, and then filtering through a filter to obtain the winterized crude oil; S8, after decolorizing and deodorizing the crude oil obtained in S7, a finished tea oil is obtained.

2. The oil pressing device used in the production process of camellia oil rich in highly unsaturated fatty acids as claimed in claim 1 is characterized in that: include: A main body base (1), wherein a pair of linear rails (2) are arranged in the middle part of the main body base (1), and a feeding assembly (3) and a pushing assembly (4) are respectively arranged at the head and tail ends of the linear rails; The squeezing component (5) comprises a filling disc (501) having a filling groove (5010), and a pressure disc (502) coaxially mounted on the filling disc (501); the tea cake (9) is clamped and fixed in the groove of the filling disc (501) by the filling disc (501) and the pressure disc (502); the head and tail end faces of a plurality of the squeezing components (5) are mutually fitted and slidably arranged on the linear track (2); a limiting platform (6) is arranged on the main body base (1) on both sides of the linear slide rail, close to the pushing group; a limiting sleeper (7) is arranged on the limiting platform (6) for limiting the subsequent squeezing components (5) when the squeezing components (5) are unloaded; The feed assembly (3) comprises rotatable feed gear plates (301) equidistantly arranged in the circumferential direction of the squeeze assembly (5), which are used to push the squeeze assembly (5) into the linear slide rail and apply pressure to the squeeze assembly (5); The containing disc (501) is provided with external ear plates (5011) extending toward the outer circle in the circumferential direction, the number of which is equal to the number of the feeding gear disc (301).

3. An oil pressing device according to claim 2, characterized in that: The feed assembly (3) further comprises: A fixed disc (302) is arranged at the head end of the main body base (1), and a feed hole (3021) is arranged at the center of the fixed disc (302) for the extraction component (5) to pass through; The driving component (303) is arranged on the fixed disc (302) of the outer ring of the feed hole (3021), and the driving component (303) includes a driving table (3031), and the driving table (3031) is connected to two support plates (3032). The feed gear plate (301) is rotatably arranged between the two support plates (3032) and is driven to rotate by the driving component (303).

4. An oil pressing device according to claim 2, characterized in that: The pushing assembly (4) comprises: A fixed platform (401) with an installation inner cavity is arranged at the rear end of the main body base (1), and the installation inner cavity of the fixed platform (401) is provided with a driver (402); The thrust telescopic rod (403) is connected to the driver (402), and the axis of the thrust telescopic rod (403) intersects with the center of the squeezing component (5) slidably arranged on the linear guide rail.

5. An oil pressing device according to claim 2, characterized in that: An oil drain groove (5012) is arranged in the outer ring area of ​​the containing groove (5010), an annular filter screen (10) is arranged in the oil drain groove (5012), and the oil drain groove (5012) is connected to an oil drain channel (5013), and the oil drain channel (5013) is connected to the inner cavity of the oil storage shell (5014) arranged on the back side of the containing disc (501).

6. An oil pressing device according to claim 5, characterized in that: A ball core plug (5015) is arranged in the oil discharge channel (5013), and the ball core plug (5015) is connected to a tightening spring (5016).

7. An oil pressing device according to claim 2, characterized in that: The pressure plate comprises a main board (5021), on which a plurality of pressure plates (5022) with different apertures are stacked, wherein the outermost pressure plate (5022) has the smallest aperture, and the innermost pressure plate (5022) has the largest aperture. The pressure plate (5022) with the largest aperture is fixed on the pressure plate, and pressure springs (5023) are arranged between the remaining pressure plates (5022) and the main board (5021).

8. An oil pressing device according to claim 2, characterized in that: The linear slide rail comprises a circular slide bar (201), and the outer ring walls of the pressure plate and the containing disc (501) are both provided with outwardly extending claws (8), and the claws (8) are provided with a clamping hole (801) for clamping the circular slide bar (201), and the clamping hole (801) is provided with an opening with an arc length smaller than the semi-circular arc length thereof.

9. An oil pressing device according to claim 8, characterized in that: A retractable shell (5017) is fittedly provided at the position where the claw (8) is provided on the containing disc (501), and a strip-shaped slider (5018) is slidably provided inside the retractable shell (5017). One end of the strip-shaped slider (5018) is connected to a stress spring when sliding inside the retractable shell (5017), and the other end is connected to an arc-shaped limit block (5019).

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