A vertical mixing and stirring structure for walnut oil production

Abstract

The present invention provides a vertical mixing and stirring structure for walnut oil production, which includes a vertical stirring cylinder, a stirring component and a driving motor; a dividing component divides the inner cavity of the vertical stirring cylinder into an upper chamber and a lower chamber; a lower water inlet hole is arranged in the middle and upper part of the side wall of the lower chamber, and the lower water inlet hole is connected to a water supply pipeline through a water supply branch. When the through hole in the dividing component is in a closed state, the lower stirring part rotates reversely to force the materials in the lower chamber to be conveyed upward, and the lower stirring part and the dividing component cooperate with each other to extrude the materials in the lower chamber. Part of the oil-water mixture seeping out from the materials flows into the second interlayer through the lower water inlet hole, and then flows back to the filtering chamber through the liquid discharge port at the bottom of the second interlayer. The present invention can realize the microscopic morphological changes of oilseeds such as walnut kernels, including swelling - absorbing water, oil molecules being displaced - compressed, and the displaced oil molecules being extruded, which is similar to repeatedly performing the two actions of inhaling and exhaling, accelerating the replacement speed of oil molecules and increasing the oil yield.

Description

Technical Field

[0001] The present invention relates to the technical field of mixing and stirring, and particularly relates to a vertical mixing and stirring structure for walnut oil production. Background Art

[0002] The existing water displacement method refers to a method of extracting oil by adding water under heating conditions, so that the protein in the plant cells of one kind of oilseed or several kinds of oilseeds denatures, and then the affinity between the oil and the protein is reduced to be less than the affinity between water and the protein. After that, water enters the plant cells to replace the oil, realizing the precipitation of the oil, and separating the oil by using the different densities of the oil and water. This method does not use solvents and is a green and healthy processing method. Walnuts have a high oil content and belong to soft oilseeds, which are suitable for extracting the contained oil by the water displacement method. For the specific extraction process, refer to CN202210940269.2.

[0003] The mixing and stirring component is one of the important components in the water displacement method, and the existing stirring structure has defects such as long stirring time and low oil yield. Summary of the Invention

[0004] The purpose of the present invention is to provide a vertical mixing and stirring structure for walnut oil production to solve at least one of the above technical problems existing in the prior art. The present invention is a divisional application of the application with the application number 202310590436X and the name "A vertical mixing and stirring structure for walnut oil production and its oil extraction method".

[0005] To solve the above technical problems, a vertical mixing and stirring structure for walnut oil production provided by the present invention includes: a vertical stirring cylinder, a stirring component, and a driving motor;

[0006] The vertical stirring cylinder is a vertically arranged oblong cylinder;

[0007] A dividing component is arranged inside the vertical stirring cylinder;

[0008] The dividing component divides the inner cavity of the vertical stirring cylinder into an upper chamber and a lower chamber;

[0009] The stirring component includes: a main shaft and spiral blades; the outer diameter of the spiral blades is adapted to the inner diameter of the inner wall of the vertical stirring cylinder (the outer diameter of the spiral blades is equal to or slightly smaller than the inner diameter of the cylinder); the main shaft penetrates through the upper chamber and the lower chamber vertically, and the spiral blades include an upper stirring part arranged in the upper chamber and a lower stirring part arranged in the lower chamber;

[0010] The splitting assembly comprises a first grinding plate and a second grinding plate which are stacked and closely fitted one above the other; the first grinding plate and the second grinding plate are provided with a first grinding hole and a second grinding hole respectively; one of the first grinding plate and the second grinding plate can be relatively rotated to change the overlap of the first grinding hole and the second grinding hole, thereby changing the size of the through hole on the splitting assembly as a whole (i.e., the size of the overlap area of ​​the first grinding hole and the second grinding hole on the horizontal projection plane) and opening and closing;

[0011] The driving motor is connected to the main shaft, and is used for driving the upper stirring part and the lower stirring part to rotate forward or reversely. When the through hole on the dividing component is open, the main shaft rotates forward, and the upper stirring part forces the material in the upper chamber to pass through the through hole of the dividing component from top to bottom. The main shaft reverses, and the lower stirring part forces the material in the lower chamber to pass through the through hole of the dividing component from bottom to top, thereby realizing repeated grinding of the material.

[0012] During production, the degree of wall breaking of walnut kernels after grinding greatly affects the oil extraction speed and rate of walnut kernels. The stirring equipment in the existing water replacement method can only realize the stirring function. When the wall of walnut kernels and other oil materials is not sufficiently broken, it will lead to low oil extraction efficiency, or it will take a long time to stir to complete production.

[0013] The present application combines the two processes of stirring and grinding together, thereby realizing that multiple processes of soaking, stirring and grinding are performed alternately and repeatedly in the same equipment; and the size of the through holes of the dividing component is adjustable, which can realize multiple grindings in a step-by-step manner from large to small, solving the problems of overheating of materials or even overcooking and burnt materials in the existing grinding process; the alternation and repetition of the soaking, stirring and grinding processes can realize the repeated microscopic changes of walnut kernels and other oil materials such as expansion - absorption of water, displacement - compression of oil molecules, and extrusion of displaced oil molecules, which is similar to repeatedly performing the two actions of exhaling and breathing, thereby accelerating the displacement of oil molecules and improving the oil yield.

[0014] When the first grinding hole and the second grinding hole are completely offset, the through hole on the dividing component as a whole is in a closed state, the dividing component completely divides the upper chamber and the lower chamber, and the bottom of the upper chamber forms a sealing structure. The upper chamber can be used for soaking walnut kernels and other oils, so that walnut kernels and other oils can fully absorb moisture.

[0015] Furthermore, a filtration chamber is arranged inside the vertical mixing drum and below the lower chamber; a first filter plate is arranged between the lower chamber and the filtration chamber; a first filter hole is arranged on the first filter plate; the oil-water mixture flowing down from the upper chamber and the lower chamber flows into the filtration chamber through the first filter plate.

[0016] Further, the main shaft penetrates through the filtering chamber, and the stirring member further includes a plurality of stirring elements (such as stirring blades or stirring rods) disposed on the main shaft and within the filtering chamber. The stirring elements rotate driven by the driving motor and the main shaft, and are used to force the separation of oil and water molecules in the filtering chamber.

[0017] Further, a heating module is provided at the bottom within the filtering chamber, and is used to heat-treat the oil-water mixture within the filtering chamber.

[0018] After the oil-water mixture in the filtering chamber separates oil and water molecules, the oil molecules float upward to form a walnut oil layer above, and the water molecules sink downward to form a clear water layer below. The heating function of the heating module can increase the oil-water separation speed, and at the same time, the heated clear water can be circulated back to the upper chamber and / or the lower chamber to continue the water displacement reaction.

[0019] Further, a pump body is further included; an upper water inlet hole is provided in the upper middle part of the side wall of the upper chamber; a water outlet is provided at the bottom of the filtering chamber, and the water outlet is connected to the upper water inlet hole through a water supply pipeline. The pump body is disposed on the water supply pipeline and is used to force the hot water (heated clear water) from the filtering chamber to spray into the upper chamber through the upper water inlet hole, moistening (or soaking) the material and heating the material at the same time.

[0020] In existing water displacement devices, additional heating components have to be used to heat the stirring container, thereby maintaining the environmental temperature during the water displacement process. In this application, hot water can be supplied to materials such as walnut kernels in the upper chamber and the lower chamber through a circulation mode. The environmental temperature during the water displacement process can be well maintained by this hot water, and this heating method is more direct and uniform; at the same time, in the existing water displacement process, the oil molecule content in the water liquid used for water displacement is relatively high, which hinders the further seepage of oil molecules from materials such as walnut kernels; while in this application, due to the use of a circulation mode for water displacement treatment, the oil-water mixture in the upper chamber flows into the lower chamber through the through holes on the partitioning component, and the oil-water mixture in the lower chamber flows into the filtering chamber through the first filter holes on the first filter plate. The clear water after oil-water separation is heated and then returns to the upper chamber and the lower chamber again. Thus, overall, the oil molecule content in the water liquid used for water displacement is relatively low, which is beneficial to the further seepage of oil molecules from materials such as walnut kernels.

[0021] Further, a drain port is provided at the bottom of the upper chamber, and the drain port is communicated with the filtering chamber through a return water pipeline.

[0022] When the through holes on the partitioning component are in a closed state, the water liquid in the upper chamber can return to the filtering chamber through the drain port and the return water pipeline.

[0023] Preferably, when the through-holes on the splitting component are in a closed state, the forward rotation of the upper stirring part forces the materials in the upper chamber to be conveyed downward. The upper stirring part and the splitting component cooperate with each other to extrude the materials, accelerating the exudation of oil molecules in the materials.

[0024] Preferably, when the through-holes on the splitting component are in a closed state, the reverse rotation of the lower stirring part forces the materials in the lower chamber to be conveyed upward. The lower stirring part and the splitting component cooperate with each other to extrude the materials in the lower chamber, accelerating the exudation of oil molecules in the materials.

[0025] Furthermore, a plurality of the upper water inlet holes are evenly arranged in the circumferential direction of the upper chamber.

[0026] The hot water sprayed out from the upper water inlet holes can be evenly sprayed onto the materials on the upper stirring part.

[0027] Furthermore, a first interlayer is arranged on the outer side of the middle upper part of the side wall of the upper chamber. Both ends of the upper water inlet holes communicate with the first interlayer and the upper chamber; the water supply pipeline is communicated with the first interlayer, and water is supplied to the upper chamber through the first interlayer and the upper water inlet holes in sequence.

[0028] Furthermore, it further includes a second filter plate, and second filter holes are arranged on the second filter plate;

[0029] The first filter plate and the second filter plate are stacked up and down and closely attached to form a filtering component; one of the first filter plate and the second filter plate can be relatively rotatably arranged, thereby changing the coincidence degree of the first filter holes and the second filter holes, and further changing the size of the filter holes on the filtering component (that is, in the horizontal projection plane, the overlapping area size of the first filter holes and the second filter holes) and the opening and closing.

[0030] Preferably, when the filter holes on the filtering component are closed, when the main shaft rotates forward, the lower stirring part and the filtering component cooperate with each other to extrude the materials in the lower chamber, accelerating the exudation of oil molecules in the materials.

[0031] Furthermore, lower water inlet holes are arranged in the middle upper part of the side wall of the lower chamber. The lower water inlet holes are connected to the water supply pipeline through a water supply branch, and the pump body can spray hot water into the lower chamber through the water supply branch and the lower water inlet holes.

[0032] Preferably, control valves are arranged on the above pipelines or branches to control their on-off.

[0033] Furthermore, a second interlayer is arranged on the outer side of the middle upper part of the side wall of the lower chamber. Both ends of the lower water inlet holes communicate with the second interlayer and the lower chamber; the water supply branch is communicated with the second interlayer, and water is supplied to the lower chamber through the second interlayer and the lower water inlet holes in sequence.

[0034] Further, a liquid discharge port is provided at the bottom of the second interlayer, and the liquid discharge port is communicated with the filtration chamber through a pipeline.

[0035] When the through hole in the dividing component is in a closed state, the lower stirring part rotates reversely to force the materials in the lower chamber to be conveyed upward. The lower stirring part and the dividing component cooperate with each other to extrude the materials in the lower chamber, and a part of the oil-water mixture seeping out from the materials flows into the second interlayer through the lower water inlet hole, and then flows back to the filtration chamber through the liquid discharge port at the bottom of the second interlayer.

[0036] Further, it further includes a lower actuator for driving the first filter plate or the second filter plate to rotate.

[0037] The first filter plate or the second filter plate is rotatably arranged in the vertical stirring cylinder. A relatively simple implementation manner is that the lower actuator is a rotating handle. One end of the rotating handle is connected to the first filter plate or the second filter plate, and the other end extends out from the gap on the side wall of the vertical stirring cylinder (a dynamic sealing structure is arranged on the gap). By moving the rotating handle, the first filter plate or the second filter plate can be driven to rotate, thereby adjusting the size of the filter holes on the filter assembly.

[0038] Similarly, the present application may further include an upper actuator for driving the first grinding plate or the second grinding plate to rotate. The upper actuator may also adopt the above-mentioned rotating handle.

[0039] Further, an oil outlet hole is provided in the middle of the side wall of the filtration chamber, and the oil in the upper oil layer in the filtration chamber flows out through the oil outlet hole.

[0040] Preferably, an oil tank for receiving the oil flowing out from the oil outlet hole is arranged outside the vertical stirring cylinder.

[0041] Further, a feed inlet is provided above the side wall of the vertical stirring cylinder; the drive motor is arranged at the top of the vertical stirring cylinder.

[0042] The second aspect of the present invention discloses an oil pressing device adopting the above-mentioned vertical mixing and stirring structure for walnut oil production.

[0043] The second aspect of the present invention discloses an oil pressing method based on the above-mentioned vertical mixing and stirring structure for walnut oil production, which includes the following steps:

[0044] S10. Feed the walnut kernel materials (preferably ground walnut kernel powder) into the vertical stirring cylinder through the upper feed inlet;

[0045] The pump body is started, and hot water at a set temperature (preferably 70 - 90 °C) is sprayed into the upper chamber through the upper water inlet hole; the main shaft rotates forward, and the upper stirring part mixes and stirs the materials while conveying the materials downward;

[0046] The through holes on the splitting component are fully opened (i.e., opened to the maximum). Under the pushing of the upper stirring part, the material is subjected to primary grinding treatment through the through holes;

[0047] The control valve on the water supply branch is opened, and hot water at a set temperature is sprayed into the lower chamber through the lower water inlet hole. The lower stirring part mixes and stirs the material entering the lower chamber;

[0048] The through holes on the splitting component are adjusted to be smaller. The main shaft rotates in reverse. Under the pushing of the lower stirring part, the material is subjected to secondary grinding and extrusion through the through holes;

[0049] The through holes on the splitting component are further adjusted to be smaller. The main shaft rotates forward. Under the pushing of the upper stirring part, the material is subjected to tertiary grinding and extrusion through the through holes;

[0050] Steps S40 and S50 are repeated multiple times (preferably 4 - 100 times);

[0051] The oil - water mixture in the upper chamber and the lower chamber flows into the filtered chamber after filtration; the stirring part in the filtered chamber rotates with the main shaft, agitating the oil - water mixture and forcing the oil - water separation; the lower - layer water in the filtered chamber is heated and then pumped back into the upper chamber and the lower chamber.

[0052] Furthermore, it also includes the step:

[0053] The through holes on the splitting component are fully closed. The upper stirring part rotates forward to force the material in the upper chamber to be transported downward. The upper stirring part and the splitting component cooperate with each other to extrude the material, accelerating the exudation of oil molecules in the material.

[0054] Furthermore, it also includes the step:

[0055] The through holes on the splitting component are fully closed. The lower stirring part rotates in reverse to force the material in the lower chamber to be transported upward. The lower stirring part and the splitting component cooperate with each other to extrude the material in the lower chamber, accelerating the exudation of oil molecules in the material.

[0056] Furthermore, it also includes the step:

[0057] The filtering holes on the filtering component are fully closed. When the main shaft rotates forward, the lower stirring part and the filtering component cooperate with each other to extrude the material in the lower chamber, accelerating the exudation of oil molecules in the material.

[0058] Furthermore, it also includes the step:

[0059] S110. The through holes on the splitting component are completely closed and the filtering holes on the filtering component are completely closed. The materials in the upper chamber and the lower chamber are immersed in hot water. The main shaft rotates forward and backward from time to time, and the upper stirring part and the lower stirring part continuously mix and stir the materials.

[0060] After the production process is completed, a slag discharge port is provided at the bottom of the upper chamber and / or the lower chamber. The sluice gate on the slag discharge port is opened to discharge the slag.

[0061] Adopting the above technical solution, the present invention has the following beneficial effects:

[0062] A vertical mixing and stirring structure for walnut oil production provided by the present invention integrates multiple processes such as soaking, mixing and stirring, and grinding, so as to realize the alternation and repetition of multiple processes such as soaking, mixing and stirring, and grinding in the same device; it can realize the microscopic morphological changes of oilseeds such as walnuts, such as swelling - absorbing water, oil molecules being displaced - compressed, and oil molecules being extruded repeatedly, accelerating the replacement speed of oil molecules and increasing the oil yield. Description of the Drawings

[0063] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0064] Figure 1 It is a schematic structural diagram of the vertical mixing and stirring structure provided by the embodiment of the present invention;

[0065] Figure 2 For Figure 1 A partial schematic diagram of the upper chamber shown;

[0066] Figure 3 For Figure 1 A partial schematic diagram of the lower chamber and the filtered chamber shown;

[0067] Figure 4 It is a schematic structural diagram when the through holes of the splitting component in the embodiment of the present invention are completely opened;

[0068] Figure 5 It is a schematic structural diagram when the through holes of the splitting component in the embodiment of the present invention are completely closed.

[0069] Reference Signs:

[0070] 1 - Driving motor; 10 - Vertical mixing drum; 11 - Upper chamber; 12 - Lower chamber; 13 - Filtering chamber; 14 - Upper water inlet; 15 - Lower water inlet; 16 - First interlayer; 17 - Second interlayer; 18 - Drain outlet; 19 - Liquid discharge port; 20 - Mixing component; 21 - Main shaft; 22 - Upper mixing part; 23 - Lower mixing part; 24 - Mixing piece; 30 - Partition component; 31 - First grinding plate; 32 - Second grinding plate; 33 - First grinding hole; 34 - Second grinding hole; 35 - Rotating handle; 41 - First filter plate; 42 - Second filter plate; 43 - First filter hole; 44 - Second filter hole; 45 - Oil outlet; 46 - Fuel tank; 50 - Heating module; 51 - Pump body; 52 - Water supply pipeline; 53 - Water supply branch; 61 - Upper slag discharge port; 62 - Upper gate plate. Detailed implementation mode

[0071] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0072] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It 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 cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0073] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0074] The present invention will be further explained and described below in combination with specific implementation modes.

[0075] Embodiment 1

[0076] As Figures 1-5As shown in the figure, a vertical mixing and stirring structure for walnut oil production provided in this embodiment includes: a vertical stirring cylinder 10, a stirring component 20, and a driving motor 1;

[0077] The vertical stirring cylinder 10 is a vertically arranged oblong cylinder;

[0078] A dividing component 30 is arranged inside the vertical stirring cylinder 10;

[0079] The dividing component 30 divides the inner cavity of the vertical stirring cylinder 10 into an upper chamber 11 and a lower chamber 12;

[0080] The stirring component 20 includes: a main shaft 21 and spiral blades; the outer diameter of the spiral blades is adapted to the inner wall diameter of the vertical stirring cylinder 10 (the outer diameter of the spiral blades is equal to or slightly smaller than the inner diameter of the cylindrical body); the main shaft 21 penetrates through the upper chamber 11 and the lower chamber 12 up and down, and the spiral blades include an upper stirring part 22 arranged in the upper chamber 11 and a lower stirring part 23 arranged in the lower chamber 12;

[0081] The dividing component 30 includes a first grinding plate 31 and a second grinding plate 32 that are stacked up and down and closely attached; first grinding holes 33 and second grinding holes 34 are respectively arranged on the plates of the first grinding plate 31 and the second grinding plate 32; one of the first grinding plate 31 and the second grinding plate 32 is rotatably arranged relative to the other, so as to change the coincidence degree of the first grinding holes 33 and the second grinding holes 34, and further change the size of the through holes on the dividing component 30 as a whole (that is, in the horizontal projection plane, the coincidence area size of the first grinding holes 33 and the second grinding holes 34) and the opening and closing;

[0082] The driving motor 1 is connected to the main shaft 21 and is used to drive the upper stirring part 22 and the lower stirring part 23 to rotate forward or backward; in the state where the through holes on the dividing component 30 are open, when the main shaft 21 rotates forward, the upper stirring part 22 forces the materials in the upper chamber 11 to pass through the through holes of the dividing component 30 from top to bottom, and when the main shaft 21 rotates backward, the lower stirring part 23 forces the materials in the lower chamber 12 to pass through the through holes of the dividing component 30 from bottom to top, thereby realizing the repeated grinding of the materials.

[0083] When the first grinding holes 33 and the second grinding holes 34 are completely staggered, the through holes on the dividing component 30 as a whole are in a closed state, and the dividing component 30 completely separates the upper chamber 11 and the lower chamber 12. A sealing structure is formed at the bottom of the upper chamber 11, and the upper chamber 11 can be used for soaking oil materials such as walnut kernels, so that the oil materials such as walnut kernels can fully absorb water.

[0084] Further, a filtering chamber 13 is provided inside the vertical stirring cylinder 10 and below the lower chamber 12; a first filter plate 41 is provided between the lower chamber 12 and the filtering chamber 13; first filter holes 43 are provided on the first filter plate 41; the oil-water mixture flowing down from the upper chamber 11 and the lower chamber 12 flows into the filtering chamber 13 through the first filter plate 41.

[0085] Further, the main shaft 21 penetrates through the filtering chamber 13, and the stirring member 20 further includes a plurality of stirring members 24 (such as stirring blades or stirring rods) provided on the main shaft 21 and inside the filtering chamber 13. The stirring members 24 rotate driven by the driving motor 1 and the main shaft 21, and are used to force the separation of oil and water molecules in the filtering chamber 13.

[0086] Further, a heating module 50 is provided at the bottom inside the filtering chamber 13, and is used to heat-treat the oil-water mixture in the filtering chamber 13.

[0087] After the oil-water mixture in the filtering chamber 13 separates oil and water molecules, the oil molecules float upward to form a walnut oil layer above, and the water molecules sink downward to form a clear water layer below. The heating function of the heating module 50 can improve the oil-water separation speed, and at the same time, the heated clear water can be circulated back to the upper chamber 11 and / or the lower chamber 12 to continue the water displacement reaction.

[0088] Further, a pump body 51 is further included; an upper water inlet hole 14 is provided in the upper middle part of the side wall of the upper chamber 11; a water outlet is provided at the bottom of the filtering chamber 13, and the water outlet is connected to the upper water inlet hole 14 through a water supply pipeline 52. The pump body 51 is provided on the water supply pipeline 52 and is used to force the hot water (heated clear water) from the filtering chamber 13 to be sprayed into the upper chamber 11 through the upper water inlet hole 14, so as to moisten (or soak) the material and heat the material at the same time.

[0089] In the existing water displacement equipment, additional heating components have to be used to heat the stirring container, so as to maintain the environmental temperature during the water displacement process. In this application, hot water can be supplied to materials such as walnut kernels in the upper chamber 11 and the lower chamber 12 through a circulation mode, and the environmental temperature during the water displacement process can be preferably maintained by the hot water. This heating method is more direct and uniform; at the same time, in the existing water displacement process, the oil molecule content in the water liquid used for water displacement is relatively high, which hinders the further exudation of oil molecules in materials such as walnut kernels; while in this application, due to the use of a circulation mode for water displacement treatment, the oil-water mixture in the upper chamber 11 flows into the lower chamber 12 through the through holes on the partitioning assembly 30, and the oil-water mixture in the lower chamber 12 flows into the filtering chamber 13 through the first filter holes 43 on the first filter plate 41. The clear water after oil-water separation is heated and then returns to the upper chamber 11 and the lower chamber 12 again. Therefore, the oil molecule content in the water liquid used for water displacement is relatively low as a whole, which is beneficial to the rapid exudation of oil molecules in materials such as walnut kernels.

[0090] Optionally, a drain port 18 is provided at the bottom of the upper chamber 11, and the drain port 18 is communicated with the filtered chamber 13 through a return water pipeline. When the through holes on the dividing assembly 30 are in a closed state, the liquid in the upper chamber 11 can return to the filtered chamber 13 through the drain port 18 and the return water pipeline.

[0091] Preferably, when the through holes on the dividing assembly 30 are in a closed state, the forward rotation of the upper stirring part 22 forces the materials in the upper chamber 11 to be conveyed downward, and the upper stirring part 22 and the dividing assembly 30 cooperate with each other to extrude the materials, accelerating the exudation of oil molecules in the materials.

[0092] Similarly, when the through holes on the dividing assembly 30 are in a closed state, the reverse rotation of the lower stirring part 23 forces the materials in the lower chamber 12 to be conveyed upward, and the lower stirring part 23 and the dividing assembly 30 cooperate with each other to extrude the materials in the lower chamber 12, accelerating the exudation of oil molecules in the materials.

[0093] In this embodiment, a plurality of the upper water inlet holes 14 are uniformly arranged in the circumferential direction of the upper chamber 11. The hot water sprayed out from the upper water inlet holes 14 can be evenly sprayed onto the materials on the upper stirring part 22. Further preferably, a first interlayer 16 is arranged on the outer side of the middle upper part of the side wall of the upper chamber 11, and both ends of the upper water inlet hole 14 communicate with the first interlayer 16 and the upper chamber 11; the water supply pipeline 52 is communicated with the first interlayer 16, and water is supplied into the upper chamber 11 through the first interlayer 16 and the upper water inlet hole 14 in sequence.

[0094] This embodiment may further include a second filter plate 42, and second filter holes 44 are provided on the second filter plate 42; the first filter plate 41 and the second filter plate 42 are stacked up and down and closely attached to form a filter assembly 40; one of the first filter plate 41 and the second filter plate 42 is rotatably arranged relative to the other, thereby changing the coincidence degree of the first filter holes 43 and the second filter holes 44, and further changing the size of the filter holes on the filter assembly 40 (that is, in the horizontal projection plane, the coincidence area size of the first filter holes 43 and the second filter holes 44) and the opening and closing.

[0095] Preferably, when the filter holes on the filter assembly 40 are closed, when the main shaft 21 rotates forward, the lower stirring part 23 and the filter assembly 40 cooperate with each other to extrude the materials in the lower chamber 12, accelerating the exudation of oil molecules in the materials. That is, it can simultaneously extrude or grind the materials in the upper chamber 11 and the lower chamber 12, accelerating the oil extraction effect.

[0096] Further, an upper-middle part of the side wall of the lower chamber 12 is provided with a lower water inlet hole 15. The lower water inlet hole 15 is connected to the water supply pipeline 52 through a water supply branch 53. The pump body 51 can spray hot water into the lower chamber 12 through the water supply branch 53 and the lower water inlet hole 15.

[0097] Further, a second interlayer 17 is arranged outside an upper-middle part of the side wall of the lower chamber 12. Both ends of the lower water inlet hole 15 communicate with the second interlayer 17 and the lower chamber 12; the water supply branch 53 communicates with the second interlayer 17, and water is supplied into the lower chamber 12 through the second interlayer 17 and the lower water inlet hole 15 in sequence.

[0098] Further, a liquid discharge port 19 is arranged at the bottom of the second interlayer 17. The liquid discharge port 19 is connected to the filtering chamber 13 through a pipeline.

[0099] When the through hole in the dividing component 30 is in a closed state, the lower stirring part 23 rotates reversely to force the materials in the lower chamber 12 to be conveyed upward. The lower stirring part 23 and the dividing component 30 cooperate with each other to extrude the materials in the lower chamber 12. Part of the oil-water mixture oozing out from the materials flows into the second interlayer 17 through the lower water inlet hole 15, and then flows back into the filtering chamber 13 through the liquid discharge port 19 at the bottom of the second interlayer 17.

[0100] Preferably, a control valve is arranged on the above pipeline or branch to control its on-off.

[0101] This application may further include an upper actuator for driving the first grinding plate 31 or the second grinding plate 32 to rotate. A relatively simple implementation manner is that the upper actuator can adopt a manual rotating handle 35. One end of the rotating handle 35 is connected to the first grinding plate 31 or the second grinding plate 32, and the other end extends out from a gap on the side wall of the vertical stirring cylinder 10 (a dynamic sealing structure is arranged on the gap). By moving the rotating handle 35, the first grinding plate 31 or the second grinding plate 32 can be driven to rotate, so as to adjust the size of the through hole in the dividing component 30. Of course, an electric mode such as a servo motor can also be adopted for driving, so as to facilitate realizing automatic control.

[0102] Similarly, this embodiment further includes a lower actuator for driving the first filter plate 41 or the second filter plate 42 to rotate. The first filter plate 41 or the second filter plate 42 is rotatably arranged in the vertical stirring cylinder 10, and the lower actuator drives one of them to rotate.

[0103] Further, an oil outlet hole 45 is arranged at an upper-middle part of the side wall of the filtering chamber 13. The oil liquid in the upper oil layer in the filtering chamber 13 flows out through the oil outlet hole 45.

[0104] Preferably, a fuel tank 46 for receiving the oil flowing out of the oil outlet hole 45 is provided outside the vertical mixing drum 10.

[0105] In addition, a feed inlet is provided above the side wall of the vertical mixing drum 10; the drive motor 1 is arranged at the top of the vertical mixing drum 10.

[0106] During production, the degree of cell wall rupture of walnuts after being ground greatly affects the oil extraction speed and oil yield of walnuts. The existing stirring equipment in the water displacement method can only achieve the stirring function. When the cell wall rupture of oilseeds such as walnuts is insufficient, it will lead to low oil extraction efficiency or long stirring time to complete production.

[0107] This application combines the two processes of stirring and grinding together, so as to realize the alternate and repeated progress of multiple processes such as soaking, stirring and grinding in the same equipment; and the size of the through holes of the dividing component 30 is adjustable, which can realize multiple grindings in a step-by-step manner from large to small, solving the problems of overheating or even being overcooked and burnt of materials in the existing grinding process; the alternate and repeated progress of the soaking, stirring and grinding processes can realize the microscopic morphological changes of oilseeds such as walnuts, such as swelling - absorbing water, oil molecules being displaced - compressed, and the displaced oil molecules being extruded repeatedly, similar to repeatedly doing the two actions of inhaling and exhaling, thus accelerating the oil molecule displacement speed and increasing the oil yield.

[0108] Embodiment 2

[0109] Refer to Figures 1-5 As shown, the second aspect of the present invention discloses an oil extraction method based on the above vertical mixing and stirring structure for walnut oil production, which includes the following steps:

[0110] S10. Feed the walnut material (preferably ground walnut powder) into the vertical mixing drum 10 through the upper feed inlet.

[0111] The pump body 51 is turned on, and hot water at a set temperature (preferably 70 - 90 °C) is sprayed into the upper chamber 11 through the upper water inlet hole 14; the main shaft 21 rotates forward, and the upper stirring part 22 mixes and stirs the material while transporting the material downward.

[0112] S20. The through holes on the dividing component 30 are fully opened (i.e., opened to the maximum), and under the push of the upper stirring part 22, the material is subjected to primary grinding treatment through the through holes.

[0113] The control valve on the water supply branch 53 is opened, and hot water at a set temperature is sprayed into the lower chamber 12 through the lower water inlet hole 15, and the lower stirring part 23 mixes and stirs the material entering the lower chamber 12.

[0114] S40. Reduce the through-holes on the dividing component 30, reverse the main shaft 21, and under the pushing of the lower stirring part 23, the material is secondarily ground and extruded through the through-holes;

[0115] S50. Further reduce the through-holes on the dividing component 30, rotate the main shaft 21 forward, and under the pushing of the upper stirring part 22, the material is tertiarily ground and extruded through the through-holes;

[0116] S60. Repeat steps S40 and S50 multiple times (preferably repeat 10 - 50 times);

[0117] S70. The oil-water mixture in the upper chamber 11 and the lower chamber 12 flows into the filtered chamber 13 after filtration; the stirring member 24 in the filtered chamber 13 rotates with the main shaft 21, agitating the oil-water mixture and forcing the oil and water to separate; the lower layer of water in the filtered chamber 13 is heated and then pumped back into the upper chamber 11 and the lower chamber 12.

[0118] Further, this embodiment may further include the steps:

[0119] S80. The through-holes on the dividing component 30 are completely closed, the upper stirring part 22 rotates forward to force the material in the upper chamber 11 to be conveyed downward, and the upper stirring part 22 and the dividing component 30 cooperate with each other to extrude the material, accelerating the exudation of oil molecules in the material.

[0120] S90. The through-holes on the dividing component 30 are completely closed, the lower stirring part 23 rotates reversely to force the material in the lower chamber 12 to be conveyed upward, and the lower stirring part 23 and the dividing component 30 cooperate with each other to extrude the material in the lower chamber 12, accelerating the exudation of oil molecules in the material.

[0121] S100. The filter holes on the filtering component 40 are completely closed. When the main shaft 21 rotates forward, the lower stirring part 23 and the filtering component 40 cooperate with each other to extrude the material in the lower chamber 12, accelerating the exudation of oil molecules in the material.

[0122] S110. The through-holes on the dividing component 30 are completely closed and the filter holes on the filtering component 40 are completely closed. The materials in the upper chamber 11 and the lower chamber 12 are immersed in hot water, the main shaft 21 rotates forward and reversely from time to time, and the upper stirring part 22 and the lower stirring part 23 continuously mix and stir the materials.

[0123] Steps S80 - S110 can be inserted after any one of steps S30 - 60, or can be carried out in sequence.

[0124] After the production process is completed, an upper slag discharge port 61 can be provided at the bottom of the upper chamber 11. By opening the upper gate 62 on the upper slag discharge port 61, the slag can be discharged, or it can be used to clean or wash the upper chamber 11. Similarly, a lower slag discharge port (not shown) can be provided at the bottom of the lower chamber 12. By opening the lower gate (not shown) on the lower slag discharge port, the slag can be discharged, or it can be used to clean or wash the lower chamber 12.

[0125] The present invention combines multiple processes such as soaking, mixing and stirring, and grinding together, so as to realize the alternating and repeated execution of multiple processes such as soaking, mixing and stirring, and grinding in the same device; it can realize the microscopic morphological changes of oilseeds such as walnut kernels, such as swelling - absorbing water, oil molecules being displaced - compressed, and oil molecules being extruded repeatedly, which speeds up the replacement speed of oil molecules and increases the oil yield.

[0126] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vertical mixing and stirring structure for walnut oil production, characterized in that, it includes: a vertical stirring cylinder, a stirring component, and a driving motor; the vertical stirring cylinder is a vertically arranged oblong cylinder; a dividing component is arranged inside the vertical stirring cylinder; the dividing component divides the inner cavity of the vertical stirring cylinder into an upper chamber and a lower chamber; the stirring component includes: a main shaft and spiral blades; the outer diameter of the spiral blades is adapted to the inner wall diameter of the vertical stirring cylinder; the main shaft penetrates through the upper chamber and the lower chamber vertically, and the spiral blades include an upper stirring part arranged in the upper chamber and a lower stirring part arranged in the lower chamber; the dividing component includes a first grinding plate and a second grinding plate that are stacked vertically and fit tightly; first grinding holes and second grinding holes are respectively arranged on the plates of the first grinding plate and the second grinding plate; one of the first grinding plate and the second grinding plate is rotatably arranged relative to the other, thereby changing the coincidence degree of the first grinding holes and the second grinding holes, and further changing the size and opening / closing of the through holes on the dividing component as a whole; the driving motor is connected to the main shaft and is used to drive the upper stirring part and the lower stirring part to rotate forward or backward; in the state where the through holes on the dividing component are open, the main shaft rotates forward, and the upper stirring part forces the materials in the upper chamber to pass through the through holes of the dividing component from top to bottom. When the main shaft rotates backward, the lower stirring part forces the materials in the lower chamber to pass through the through holes of the dividing component from bottom to top, thereby realizing the repeated grinding of the materials; a filtering chamber is arranged inside the vertical stirring cylinder and below the lower chamber; a first filter plate is arranged between the lower chamber and the filtering chamber; first filter holes are arranged on the first filter plate; the oil-water mixture flowing down from the upper chamber and the lower chamber flows into the filtering chamber through the first filter plate; it further includes a pump body; an upper water inlet hole is arranged in the middle upper part of the side wall of the upper chamber; a water outlet is arranged at the bottom of the filtering chamber, and the water outlet is connected to the upper water inlet hole through a water supply pipeline. The pump body is arranged on the water supply pipeline and is used to force the hot water from the filtering chamber to be sprayed into the upper chamber through the upper water inlet hole, moistening the materials and heating the materials at the same time; a lower water inlet hole is arranged in the middle upper part of the side wall of the lower chamber, and the lower water inlet hole is connected to the water supply pipeline through a water supply branch. The pump body can spray hot water into the lower chamber through the water supply branch and the lower water inlet hole; a second interlayer is arranged outside the middle upper part of the side wall of the lower chamber, and both ends of the lower water inlet hole communicate with the second interlayer and the lower chamber; the water supply branch communicates with the second interlayer, and water is supplied to the lower chamber through the second interlayer and the lower water inlet hole in sequence; a liquid discharge port is arranged at the bottom of the second interlayer, and the liquid discharge port is connected to the filtering chamber through a pipeline; when the through holes on the dividing component are in a closed state, the lower stirring part rotates backward to force the materials in the lower chamber to be conveyed upward. The lower stirring part and the dividing component cooperate with each other to extrude the materials in the lower chamber. Part of the oil-water mixture oozing out from the materials flows into the second interlayer through the lower water inlet hole, and then flows back to the filtering chamber through the liquid discharge port at the bottom of the second interlayer.

2. The vertical mixing and stirring structure according to claim 1, characterized in that, The main shaft penetrates through the filtration chamber, and the stirring member further includes a plurality of stirring elements disposed on the main shaft and within the filtration chamber. The stirring elements rotate driven by the drive motor and the main shaft to force the separation of oil and water molecules in the filtration chamber.

3. The vertical mixing and stirring structure according to claim 1, characterized in that a heating module is provided at the bottom within the filtration chamber for heating the oil-water mixture in the filtration chamber.

4. The vertical mixing and stirring structure according to claim 1, characterized in that a drain port is provided at the bottom of the upper chamber, and the drain port is communicated with the filtration chamber through a return water pipeline.

5. The vertical mixing and stirring structure according to claim 1, characterized in that a first interlayer is provided on the outer side of the middle and upper part of the side wall of the upper chamber, and both ends of the upper water inlet hole communicate the first interlayer and the upper chamber; the water supply pipeline is communicated with the first interlayer and supplies water to the upper chamber sequentially through the first interlayer and the upper water inlet hole.

6. The vertical mixing and stirring structure according to claim 1, characterized in that it further includes a second filter plate, and second filter holes are provided on the second filter plate; The first filter plate and the second filter plate are stacked vertically and closely attached to form a filter assembly; one of the first filter plate and the second filter plate is rotatably arranged relative to the other, thereby changing the coincidence degree of the first filter holes and the second filter holes, and further changing the size and opening / closing of the filter holes on the filter assembly.

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