Squeezer for low-temperature squeezing processing treatment of walnut oil and operation method of squeezer

Abstract

The invention relates to the technical field of walnut oil low-temperature squeezers, and discloses a squeezer for walnut oil low-temperature squeezing processing treatment.The squeezer comprises a base, three supporting columns distributed at equal intervals are fixedly mounted at the top of the base, a mounting frame is jointly and fixedly mounted in the middles of the three supporting columns, and a connecting ring is mounted at the top of the mounting frame; a barrel used for separating crushed walnuts from walnut oil is clamped to the inner wall of the connecting ring, a supporting seat is connected to the top of the barrel in an attached mode, the bottom end of the supporting seat is fixedly connected with the top of the base, an oil guide ring used for collecting and guiding the walnut oil is fixedly connected to the top end of the supporting seat in a sleeving mode, and an equipment seat is rotationally installed at the top end of the supporting column; the walnut residue squeezing device has the advantages that the middle portions of walnut residues are expanded and pressurized from inside to outside, so that the walnut residues in the middle portions can be fully squeezed, meanwhile, walnut oil in the middle portions is blown out of walnut residue cakes through gas, and the problem of resource waste is solved.

Description

Technical Field

[0001] The invention relates to the technical field of walnut oil low-temperature pressing machines, in particular to a pressing machine for low-temperature pressing and processing of walnut oil and an operating method thereof. Background Art

[0002] Walnut oil is a nutritious edible oil, widely used in some exquisite ingredients. In the process of pressing walnut oil, you first need to select suitable walnut kernels and crush them into crumbs, and finally use a press to press them to make the walnut oil inside seep out. There are two widely circulated methods for pressing walnut oil. One is low-temperature pressing; the other is heated pressing. Both pressing methods have their own advantages. Compared with heated pressing, low-temperature pressing can reduce the oil yield to a certain extent, but it can retain the beneficial ingredients in walnut oil to the greatest extent, avoiding the beneficial ingredients from being damaged and ineffective when heated, which reduces the nutritional effect of walnut oil.

[0003] The existing walnut low-temperature press is unable to fully and evenly press the walnut pieces in the middle of the walnut residue during the pressing process, resulting in insufficient pressing, which in turn causes part of the walnut oil in the middle of the walnut residue cake to be unable to pass through the external walnut residue to be collected, resulting in a large amount of uncollected walnut oil still remaining in the final discarded walnut residue, leading to low production efficiency and waste of resources. Summary of the invention

[0004] In view of the fact that the existing walnut oil low-temperature pressing and processing press proposed in the background technology is unable to fully and evenly press the walnut fragments in the middle of the walnut residue during the pressing process, resulting in insufficient pressing, and further resulting in part of the walnut oil located in the middle of the walnut residue cake being unable to pass through the external walnut residue to be collected, resulting in a large amount of uncollected walnut oil still remaining in the final discarded walnut residue. The present invention provides a press, which has the advantage of expanding and pressurizing the middle part of the walnut residue from the inside to the outside, so that the middle walnut residue can be fully pressed, and at the same time, the walnut oil located in the middle is blown out of the walnut residue cake by gas, thereby solving the problem of resource waste, and solving the technical problems proposed in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a press for low-temperature pressing and processing of walnut oil, comprising a base, three equidistantly distributed support columns are fixedly installed on the top of the base, a mounting frame is fixedly installed in the middle of the three support columns, a connecting ring is installed on the top of the mounting frame, and a pressing chamber for separating walnut pieces and walnut oil is clamped on the inner wall of the connecting ring, the top of the pressing chamber is fitted with a support seat, and the bottom end of the support seat is fixedly connected to the top of the base, and the top end of the support seat is sleeved and fixedly connected with a press for collecting walnut oil A guiding oil guide ring, a plurality of oil guide holes for collecting walnut oil flowing out of the pressing chamber are opened on the top of the support seat, and the oil guide holes are located in the oil guide ring, an equipment seat is rotatably installed on the top of the support column, a hydraulic press for squeezing walnut residues in the pressing chamber is fixedly installed on the bottom of the equipment seat, a fixing ring is fixedly connected to the bottom end of the pressing chamber, two sets of oil discharge mechanisms, both of which are inserted in the pressing chamber and distributed up and down, and two sets of internal pressure mechanisms, which are respectively installed at the bottom of the two oil discharge mechanisms. Preferably, the oil discharge mechanism includes a lower pressure plate, which is slidably connected to the inner wall of the pressing chamber, a first air collecting pipe is fixedly connected at the bottom center of the lower pressure plate, and the bottom piston of the first air collecting pipe is connected to the first piston shaft, and four equally spaced second air collecting pipes are also fixedly connected to the bottom of the lower pressure plate, the bottom ends of the four second air collecting pipes are piston-connected to the second piston shaft, a through hole with the same length is opened in the second piston shaft, the piston in the through hole is connected to the third piston shaft, and the top of the third piston shaft is fixedly connected to the bottom of the lower pressure plate, the first air collecting pipe and the four second air collecting pipes are connected through the outer walls near the top with T-shaped air guide pipes, and a nozzle is fixedly installed at the bottom of the T-shaped air guide pipe.

[0006] Preferably, the internal pressure mechanism includes four limit covers, which are respectively fixedly connected to the bottom ends of four second piston shafts, and the bottom of the limit cover is fixedly connected to an oil collecting cup, and a connecting block is arranged on the central axis inside the oil collecting cup, and the inner cavity of the oil collecting cup is penetrated by four equidistantly distributed moving blocks, and four rotating blocks are connected to the connecting block and the four moving blocks for common rotation, and the four moving blocks are fixedly connected to a hollow expansion block at one end away from the rotating block, and a solid-liquid separation film is installed on the surface of the hollow expansion block, and an oil guide cavity is provided in the moving block, and the two ends of the oil guide cavity are respectively connected to the oil collecting cup and the inner cavity of the hollow expansion block, and a third spring is fixedly connected between two opposite moving blocks.

[0007] Preferably, a first spring is fixedly connected between the top end of the first piston shaft and the lower pressure plate, and a second spring is sleeved on the outer side of the four third piston shafts, and both ends of the second spring are fixedly connected to the lower pressure plate and the second piston shaft respectively.

[0008] Preferably, a bucket-shaped groove is provided at the bottom of the inner cavity of the oil collecting cup, and the bucket-shaped groove is located below the four moving blocks. Preferably, an oil guide pipe is connected through one side of the oil collecting cup close to the inner wall of the pressing chamber, and the oil guide pipe is connected to the bottom of the bucket-shaped groove in the oil collecting cup.

[0009] Preferably, the equipment seat is rotatably connected to the top end of one of the support columns, and is slidably connected to the top ends of the other two support columns, and an insertion shaft is plugged and installed between the equipment seat and the top ends of the other two support columns.

[0010] Preferably, a rotating frame is rotatably mounted on the support column rotatably connected to the equipment base, a discharge box is fixedly mounted on the rotating frame, and the discharge box is connected to an external feed pipe.

[0011] Preferably, the connecting ring is provided with three equidistantly distributed plug holes, the top of the mounting frame is fixedly connected with three limit shafts corresponding to the connecting ring, and the three limit shafts are respectively plugged into the three plug holes.

[0012] An operating method of a walnut oil low-temperature pressing machine for processing, the specific steps are as follows:

[0013] S1, rotating the rotating frame to discharge the ground walnut pieces into the pressing chamber through the external feeding pipe and the discharge box in two batches;

[0014] S2, inserting the two oil-draining mechanisms into the pressing chamber respectively with the walnut pieces input twice, and arranging them in a way that one oil-draining mechanism presses a layer of walnut pieces;

[0015] S3, rotating the equipment seat to the designated position, and using the plug shaft to connect with the support column to fix and limit the equipment seat; S4, starting the hydraulic press, so that the output shaft of the hydraulic press gradually descends and abuts against the lower pressure plate to squeeze downward to squeeze the walnut pieces.

[0016] The present invention has the following beneficial effects:

[0017] 1. The present invention uses the oil discharge mechanism to complete the action of blowing air into the inside of the walnut residue through the action of squeezing and extruding. By taking advantage of the small volume of gas molecules, the gas molecules can shuttle between the gaps of the walnut residue and quickly blow out the walnut oil mixed in the middle of the walnut residue, so that the walnut oil can quickly approach the inner wall of the pressing chamber from the middle of the walnut residue, thereby accelerating the discharge effect, thereby solving the problem that the walnut residue cake becomes increasingly compact during the squeezing process, causing the walnut oil seeping in the middle to be unable to be quickly discharged, resulting in a large amount of walnut oil still being wasted in the middle of the residue cake that is finally discharged.

[0018] 2. The present invention can also extrude and expand the middle part of the walnut residue from the inside to the outside through the internal pressure mechanism when the walnut residue is not completely compacted, so as to achieve the effect of squeezing the walnut oil from the inside, avoiding the problem that the walnut oil in the middle part of the walnut residue cannot be quickly discharged and the squeezing is insufficient due to the long distance from the pressing chamber. At this time, under the expansion of the hollow expansion block, the walnut oil in the middle part of the walnut residue will enter the inner cavity of the oil collecting cup through the solid-liquid separation film and the oil guide cavity, and finally be discharged in a concentrated manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the installation frame and the lower pressure plate in the present invention;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the pressing chamber in the present invention;

[0022] Figure 4 It is a structural schematic diagram of the bottom of the lower pressure plate in the present invention;

[0023] Figure 5 It is a partial cross-sectional structural schematic diagram of the oil discharge mechanism and the internal pressure mechanism in the present invention;

[0024] Figure 6 It is a structural schematic diagram of the second piston shaft, the third piston shaft and the connecting block in the present invention;

[0025] Figure 7 It is a partial cross-sectional structural schematic diagram of the second piston shaft and the oil guide cup in the present invention;

[0026] Figure 8 It is a structural schematic diagram of the pressing chamber and the supporting seat in the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the support seat and the oil guide ring in the present invention;

[0028] Fig.10 It is a schematic diagram of the structure of the rotating frame and the discharge box in the present invention.

[0029] In the figure: 1. base; 2. support column; 3. mounting frame; 4. equipment base; 5. hydraulic press; 6. rotating frame; 7. discharge box; 8. pressing chamber; 9. support base; 10. oil guide ring; 11. plug shaft; 12. connecting ring; 13. limit shaft; 14. fixing ring;

[0030] 15. Oil discharge mechanism; 1501. Lower pressure plate; 1502. First air collecting pipe; 1503. First piston shaft; 1504. T-type air guide pipe; 1505. Injection head; 1506. First spring; 1507. Second air collecting pipe; 1508. Second piston shaft; 1509. Third piston shaft; 1510. Second spring;

[0031] 16. Internal pressure mechanism; 1601. Limit cover; 1602. Oil collecting cup; 1603. Oil guide pipe; 1604. Connecting block; 1605. Rotating block; 1606. Moving block; 1607. Oil guide chamber; 1608. Hollow expansion block; 1609. Third spring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 10 A press for low-temperature pressing and processing of walnut oil comprises a base 1, three equally spaced support columns 2 are fixedly mounted on the top of the base 1, a mounting frame 3 is fixedly mounted in the middle of the three support columns 2, a connecting ring 12 is mounted on the top of the mounting frame 3, and a pressing chamber 8 for separating walnut pieces and walnut oil is clamped on the inner wall of the connecting ring 12, a supporting seat 9 is fitted on the top of the pressing chamber 8, and the bottom end of the supporting seat 9 is fixedly connected to the top of the base 1, and an oil guide ring 10 for collecting and guiding walnut oil is sleeved and fixedly connected to the top of the supporting seat 9, A plurality of oil guide holes for collecting walnut oil flowing out of the pressing chamber 8 are provided on the top of the support seat 9, and the oil guide holes are located in the oil guide ring 10. An equipment seat 4 is rotatably installed on the top of the support column 2, and a hydraulic press 5 for squeezing walnut residues in the pressing chamber 8 is fixedly installed on the bottom of the equipment seat 4. A fixing ring 14 is fixedly connected to the bottom end of the pressing chamber 8, two sets of oil discharge mechanisms 15, both of which are inserted into the pressing chamber 8 and distributed up and down, and two sets of internal pressure mechanisms 16, which are respectively installed at the bottom of the two oil discharge mechanisms 15.

[0034] It is worth noting that when the walnut residue is squeezed, by setting up two sets of oil discharge mechanisms 15 and internal pressure mechanisms 16, and utilizing the up-and-down arrangement of one layer of walnut residue and one layer of oil discharge mechanism 15 and the internal pressure mechanism 16, multiple portions of walnut residue cakes can be squeezed out at one time, thereby achieving the effect of reducing the thickness of the walnut during one-time squeezing, reducing the energy consumption of squeezing, and improving the oil extraction rate of squeezing. In this process, the oil discharge mechanism 15 will complete the action of blowing air into the inside of the walnut residue through the squeezing and extruding action, and utilizing the advantage of the small volume of gas molecules to shuttle between the gaps of the walnut residue and quickly blow out the walnut oil mixed in the middle of the walnut residue, so that the walnut oil can quickly approach the inner wall of the pressing chamber 8 from the middle of the walnut residue, accelerating the discharge. The effect is achieved, thereby solving the problem that the walnut residue cake becomes increasingly compacted during the pressing process, and the walnut oil seeping out in the middle cannot be discharged quickly, resulting in a large amount of walnut oil still being wasted in the middle of the residue cake that is finally discharged. At the same time, the internal pressure mechanism 16 can also squeeze and expand the middle part of the walnut residue from the inside to the outside when the walnut residue is not completely compacted, thereby achieving the effect of squeezing the walnut oil from the inside, avoiding the problem that the walnut oil in the middle of the walnut residue cannot be quickly discharged and the pressing is insufficient due to the long distance from the pressing chamber 8. At this time, under the expansion of the hollow expansion block 1608, the walnut oil in the middle of the walnut residue will enter the inner cavity of the oil collecting cup 1602 through the solid-liquid separation film and the oil guide cavity 1607, and finally be discharged in a concentrated manner.

[0035] Furthermore, the oil discharge mechanism 15 includes a lower pressure plate 1501, which is slidably connected to the inner wall of the pressing chamber 8, a first air collecting pipe 1502 is fixedly connected at the bottom center of the lower pressure plate 1501, and the bottom piston of the first air collecting pipe 1502 is connected to a first piston shaft 1503, and four equally spaced second air collecting pipes 1507 are fixedly connected to the bottom of the lower pressure plate 1501, and the bottom ends of the four second air collecting pipes 1507 are piston-connected to second piston shafts 1508, and a through hole of the same length as the second piston shaft 1508 is opened in the second piston shaft 1508, and the piston in the through hole is connected to a third piston shaft 1509, and the top end of the third piston shaft 1509 is fixedly connected to the bottom of the lower pressure plate 1501. The outer walls of the air collecting pipe 1502 and the four second air collecting pipes 1507 near the top are all connected with T-shaped air guide pipes 1504, and the bottom of the T-shaped air guide pipe 1504 is fixedly installed with a nozzle 1505. Through the continuous downward extrusion of the output shaft of the hydraulic press 5, it will first abut against the lower pressure plate 1501 located above, and then the lower pressure plate 1501 will be prompted to squeeze the walnut residue downward. During this process, the two oil discharge mechanisms 15 will continue to move downward under the downward extrusion force, and squeeze the walnut residue at the bottom of each, so as to achieve the effect of squeezing out multiple portions of walnut residue cakes at one time, thereby reducing the thickness of the walnuts during one-time squeezing, reducing the energy consumption of squeezing, and increasing the oil yield of squeezing. During this process, the first piston shaft 1503 and the second piston shaft 1508 will gradually retract into the first air collecting pipe 1502 and the second air collecting pipe 1507 during the extrusion. At this time, the compressed air generated in the first air collecting pipe 1502 and the second air collecting pipe 1507 will enter the middle part of the walnut residue through the T-shaped air guide pipe 1504 and the nozzle 1505. Taking advantage of the small volume of gas molecules, they can shuttle between the gaps in the walnut residue and quickly blow out the walnut oil mixed in the middle part of the walnut residue, so that the walnut oil can quickly approach the inner wall of the pressing chamber 8 from the middle part of the walnut residue, accelerating the discharge effect, thereby solving the problem that the walnut residue cake becomes increasingly compact during the pressing process, causing the walnut oil seeping out in the middle to be unable to be quickly discharged, resulting in a large amount of walnut oil still being wasted in the middle part of the residue cake that is finally discharged.

[0036] Furthermore, the internal pressure mechanism 16 includes four limit covers 1601, which are respectively fixedly connected to the bottom ends of the four second piston shafts 1508, and the bottom of the limit cover 1601 is fixedly connected to an oil collecting cup 1602, and a connecting block 1604 is arranged on the central axis of the oil collecting cup 1602, and the inner cavity of the oil collecting cup 1602 is connected with four equally spaced moving blocks 1606, and the connecting block 1604 is connected with the four moving blocks 1606 for common rotation. 605, one end of the four moving blocks 1606 away from the rotating block 1605 is fixedly connected to a hollow expansion block 1608, a solid-liquid separation film is installed on the surface of the hollow expansion block 1608, an oil guide cavity 1607 is opened in the moving block 1606, and the two ends of the oil guide cavity 1607 are respectively connected to the oil collecting cup 1602 and the inner cavity of the hollow expansion block 1608, wherein a third spring 1609 is fixedly connected between two opposite moving blocks 1606, and a set of internal pressure mechanism 1609 is used to press the oil collecting cup 1602 and the inner cavity of the hollow expansion block 1608. The four oil collecting cups 1602 are respectively distributed around the middle of the corresponding slag cake, so as to achieve the effect of uniform outward expansion and squeezing of the middle of the slag cake. During this period, the connecting block 1604 in each oil collecting cup 1602 will abut against the third piston shaft 1509 when the lower pressure plate 1501 drives the third piston shaft 1509 to continue to press downward, and under its drive, it will synchronously move downward to the specified position. At this time, the downward action of the connecting block 1604 will push the four rotating blocks 1605 to expand, thereby pushing the moving block 1606 to drive the hollow expansion block 1608 to expand outward, and achieve the effect of applying pressure outward from the inside of the walnut residue, thereby solving the problem that the walnut oil located in the middle of the walnut residue cannot be quickly discharged and the pressing is insufficient due to the long distance from the pressing chamber 8 during the pressing process. At this time, under the expansion of the hollow expansion block 1608, the walnut oil located in the middle of the walnut residue will enter the inner cavity of the oil collecting cup 1602 through the solid-liquid separation film and the oil guide cavity 1607, and finally be discharged in a concentrated manner.

[0037] Furthermore, a first spring 1506 is fixedly connected between the top end of the first piston shaft 1503 and the lower pressure plate 1501, and a second spring 1510 is sleeved on the outer side of the four third piston shafts 1509. The two ends of the second spring 1510 are respectively fixedly connected to the lower pressure plate 1501 and the second piston shaft 1508. The setting of the first spring 1506 and the second spring 1510 can assist the resetting of the first piston shaft 1503 and the second piston shaft 1508. During the squeezing process, as the first piston shaft 1503 and the second piston shaft 1508 move, the compressed air increases. When the compressed air is discharged and the hydraulic press 5 is no longer squeezing downward, the rebound resetting of the first spring 1506 and the second spring 1510 can quickly reset the first piston shaft 1503 and the second piston shaft 1508, thereby achieving the effect that the oil discharge mechanism 15 can be used continuously for multiple times.

[0038] Furthermore, a bucket-shaped groove is provided at the bottom of the inner cavity of the oil collecting cup 1602, and the bucket-shaped groove is located below the four movable blocks 1606. Through this arrangement, the inner cavity space of the oil collecting cup 1602 can be increased to facilitate the collection and accommodation of more walnut oil. At the same time, the inclination angle of the bucket-shaped groove can accelerate the sliding of the walnut oil, improve the collection effect, and avoid the backflow problem of the collected walnut oil.

[0039] Furthermore, an oil guide pipe 1603 is connected to one side of the oil collecting cup 1602 close to the inner wall of the pressing chamber 8, and the oil guide pipe 1603 is connected to the bottom of the bucket-shaped groove in the oil collecting cup 1602. Through the above arrangement, after the walnut oil is squeezed into the bucket-shaped groove of the oil collecting cup 1602 again by the moving block 1606 and the hollow expansion block 1608, the walnut oil can be directly guided to the inner wall of the pressing chamber 8, so that the walnut oil squeezed again from the middle of the walnut residue can be directly discharged from the pressing chamber 8, thereby improving the discharge efficiency of the walnut oil in the middle of the walnut residue and avoiding the problem that the walnut oil in the middle lacks guidance and flows back into other walnut residues.

[0040] Furthermore, the equipment seat 4 is rotatably connected to the top of one of the support columns 2, and is slidably connected to the tops of the other two support columns 2. An insertion shaft 11 is installed between the equipment seat 4 and the tops of the other two support columns 2. Through the above arrangement, the hydraulic press 5 can be easily rotated under the action of the equipment seat 4, so that when the technician takes the walnut residue cake away from the pressing chamber 8, the residue cake can be collected on one side by rotating the hydraulic press 5, so as to avoid the residue falling into the pressing chamber 8 again during the removal of the residue cake, affecting the next pressing effect. The insertion shaft 11 can meet the fixed limit of the equipment seat 4, thereby improving the stability of the hydraulic press 5 at the top of the support column 2 when working.

[0041] Among them, a rotating frame 6 is rotatably installed on the supporting column 2 rotatably connected to the equipment seat 4, and a discharge box 7 is fixedly installed on the rotating frame 6, and the discharge box 7 is connected to an external feeding pipe. Through the above arrangement, it is possible to liberate manual labor and eliminate the need for manual feeding, thereby reducing manual labor and improving the production efficiency of the press. At the same time, it also avoids the problem that external pollutants are easily introduced into the pressing chamber 8 during the manual feeding process, thereby reducing the quality of walnut oil.

[0042] In addition, three equidistantly distributed sockets are provided on the connecting ring 12, and three limit shafts 13 corresponding to the connecting ring 12 are fixedly connected to the top of the mounting frame 3, and the three limit shafts 13 are respectively plugged into the three sockets. Through the above arrangement, the connecting ring 12 can be quickly disassembled and assembled, thereby achieving the effect of facilitating the taking of the pressing chamber 8, and facilitating the technicians to perform regular maintenance on the pressing chamber 8.

[0043] It is worth noting that the operating method of a press for low-temperature pressing of walnut oil is as follows:

[0044] S1, rotating the rotating frame 6, and discharging the ground walnut pieces into the pressing chamber 8 through the external feeding pipe and the discharge box 7 in two batches;

[0045] S2, inserting the two oil-discharging mechanisms 15 into the pressing chamber 8 respectively with the walnut pieces input twice, and arranging them in a way that one oil-discharging mechanism 15 presses a layer of walnut pieces;

[0046] S3, rotating the equipment seat 4 to a specified position, and using the plug shaft 11 to plug into the support column 2 to fix the equipment seat 4;

[0047] S4, start the hydraulic press 5, so that the output shaft of the hydraulic press 5 gradually descends and abuts against the lower pressing plate 1501 to press downward to squeeze the walnut pieces.

[0048] The working principle of the method of use of the present invention is as follows: through the continuous downward extrusion of the output shaft of the hydraulic press 5, it will first abut against the lower pressure plate 1501 located above, and then the lower pressure plate 1501 will be urged to squeeze the walnut residue downward. During this process, the two oil discharge mechanisms 15 will continue to move downward under the force of downward extrusion, and squeeze the walnut residue at the bottom of each of them, so as to achieve the effect of squeezing out multiple portions of walnut residue cakes at one time, thereby reducing the thickness of the walnut during one-time squeezing, reducing the squeezing energy consumption, and increasing the squeezing oil yield. During this process, the first piston shaft 1503 and the second piston shaft 1508 will gradually retract to the first collecting pipe 1 during squeezing. 502 and the second air collecting pipe 1507. At this time, the compressed air generated in the first air collecting pipe 1502 and the second air collecting pipe 1507 will enter the middle part of the walnut residue through the T-shaped air guide pipe 1504 and the nozzle 1505. By taking advantage of the small volume of gas molecules, the gas molecules can shuttle between the gaps of the walnut residue and quickly blow out the walnut oil mixed in the middle part of the walnut residue, so that the walnut oil can quickly approach the inner wall of the pressing chamber 8 from the middle part of the walnut residue, thereby accelerating the discharge effect, thereby solving the problem that the walnut residue cake becomes more and more compact during the pressing process, causing the walnut oil seeping in the middle to be unable to be quickly discharged, resulting in a large amount of walnut oil still being wasted in the middle part of the residue cake discharged at last. At the same time, the four oil collecting cups 1602 on a set of internal pressure-applying mechanisms 16 are respectively distributed around the middle of the corresponding slag cake, so that the middle of the slag cake can be uniformly expanded and squeezed outward. During this period, the connecting block 1604 in each oil collecting cup 1602 will abut against the third piston shaft 1509 when the lower pressure plate 1501 drives the third piston shaft 1509 to continue to press down, and driven by it, it will move downward to the specified position synchronously. At this time, the downward action of the connecting block 1604 will push the four rotating blocks 1605 to expand, thereby pushing the moving block 1606 to drive the hollow expansion block 1608 to expand outward, and achieve outward pressure from the inside of the walnut slag. The effect solves the problem that the walnut oil in the middle of the walnut residue cannot be quickly discharged and is not fully pressed due to its long distance from the pressing chamber 8 during the pressing process. At this time, under the expansion of the hollow expansion block 1608, the walnut oil in the middle of the walnut residue will pass through the solid-liquid separation film and the oil guide cavity 1607 into the inner cavity of the oil collecting cup 1602, and finally be discharged in a centralized manner. The above two sets of oil discharge mechanisms 15 and internal pressure mechanisms 16 are arranged to expand and pressurize the middle part of the walnut residue from the inside to the outside, so that the middle walnut residue can be fully pressed, and at the same time, the walnut oil in the middle is blown out of the walnut residue cake by gas, thereby solving the problem of resource waste.

Claims

1. A walnut oil low temperature pressing machine, comprising a base (1), characterized in that: The top of the base (1) is fixedly mounted with three support columns (2) distributed at equal distances, a mounting frame (3) is fixedly mounted in the middle of the three support columns (2), a connecting ring (12) is mounted on the top of the mounting frame (3), and a pressing chamber (8) for separating walnut pieces and walnut oil is clamped on the inner wall of the connecting ring (12), the top of the pressing chamber (8) is fittedly connected with a support seat (9), and the bottom end of the support seat (9) is fixedly connected to the top of the base (1), and the top of the support seat (9) is fixedly connected to the top of the base (1). The end of the support column (2) is fixedly connected with an oil guide ring (10) for collecting and guiding walnut oil, the top of the support seat (9) is provided with a plurality of oil guide holes for collecting walnut oil flowing out of the pressing chamber (8), and the oil guide holes are located in the oil guide ring (10), the top of the support column (2) is rotatably mounted with an equipment seat (4), the bottom of the equipment seat (4) is fixedly mounted with a hydraulic press (5) for squeezing walnut residue in the pressing chamber (8), and the bottom of the pressing chamber (8) is fixedly connected with a fixing ring (14); Two sets of oil discharge mechanisms (15), both of which are plugged into the pressing chamber (8) and are distributed up and down; Two sets of internal pressure applying mechanisms (16), the two internal pressure applying mechanisms (16) are respectively installed at the bottom of the two oil discharge mechanisms (15).

2. A walnut oil low temperature pressing processing press according to claim 1, characterized in that: The oil discharge mechanism (15) comprises a lower pressure plate (1501), the lower pressure plate (1501) is slidably connected to the inner wall of the pressing chamber (8), a first air collecting pipe (1502) is fixedly connected at the center of the bottom circle of the lower pressure plate (1501), and a first piston shaft (1503) is connected to the bottom piston of the first air collecting pipe (1502), and four second air collecting pipes (1507) are also fixedly connected to the bottom of the lower pressure plate (1501), and the bottom ends of the four second air collecting pipes (1507) are all piston-connected. A second piston shaft (1508), a through hole of the same length as the second piston shaft (1508) is opened in the second piston shaft (1508), the piston in the through hole is connected to the third piston shaft (1509), and the top end of the third piston shaft (1509) is fixedly connected to the bottom of the lower pressure plate (1501), the first air collecting pipe (1502) and the four second air collecting pipes (1507) are connected to the outer wall near the top end through a T-shaped air guide pipe (1504), and the bottom end of the T-shaped air guide pipe (1504) is fixedly installed with a nozzle (1505).

3. A walnut oil low temperature pressing processing press according to claim 2, characterized in that: The internal pressure mechanism (16) comprises four limit covers (1601), the four limit covers (1601) are respectively fixedly connected to the bottom ends of the four second piston shafts (1508), the bottom of the limit cover (1601) is fixedly connected to an oil collecting cup (1602), a connecting block (1604) is arranged on the central axis of the oil collecting cup (1602), the inner cavity of the oil collecting cup (1602) is penetrated by four equally distributed moving blocks (1606), and the connecting block (1604) and the four moving blocks (1606) are connected to each other for rotation together. A rotating block (1605) is provided, and one end of each of the four moving blocks (1606) away from the rotating block (1605) is fixedly connected to a hollow expansion block (1608), a solid-liquid separation film is installed on the surface of the hollow expansion block (1608), an oil guide cavity (1607) is provided in the moving block (1606), and the two ends of the oil guide cavity (1607) are respectively connected to the oil collecting cup (1602) and the inner cavity of the hollow expansion block (1608), wherein a third spring (1609) is fixedly connected between two opposite moving blocks (1606).

4. A walnut oil low temperature pressing processing press according to claim 2, characterized in that: A first spring (1506) is fixedly connected between the top end of the first piston shaft (1503) and the lower pressure plate (1501), and a second spring (1510) is sleeved on the outer side of the four third piston shafts (1509), and the two ends of the second spring (1510) are fixedly connected to the lower pressure plate (1501) and the second piston shaft (1508), respectively.

5. A walnut oil low temperature pressing processing press according to claim 3, characterized in that: A bucket-shaped groove is provided at the bottom of the inner cavity of the oil collecting cup (1602), and the bucket-shaped groove is located below the four moving blocks (1606).

6. A walnut oil low temperature pressing processing press according to claim 5, characterized in that: An oil guide pipe (1603) is connected through one side of the oil collecting cup (1602) close to the inner wall of the pressing chamber (8), and the oil guide pipe (1603) is connected to the bottom of the bucket-shaped groove in the oil collecting cup (1602).

7. A walnut oil low temperature pressing processing press according to claim 1, characterized in that: The equipment seat (4) is rotatably connected to the top of one of the support columns (2), and is slidably connected to the tops of the other two support columns (2); an insertion shaft (11) is inserted and installed between the equipment seat (4) and the tops of the other two support columns (2).

8. A walnut oil low temperature pressing processing press according to claim 7, characterized in that: A rotating frame (6) is rotatably mounted on the support column (2) rotatably connected to the equipment seat (4), a discharge box (7) is fixedly mounted on the rotating frame (6), and the discharge box (7) is connected to an external feed pipe.

9. A walnut oil low temperature pressing processing press according to claim 1, characterized in that: The connecting ring (12) is provided with three equidistantly distributed plug holes, and the top of the mounting frame (3) is fixedly connected with three limit shafts (13) corresponding to the connecting ring (12), and the three limit shafts (13) are respectively plugged into the three plug holes.

10. The method for operating a press for low-temperature pressing of walnut oil according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: S1, rotating the rotating frame (6) to discharge the ground walnut pieces into the pressing chamber (8) through the external feeding pipe and the discharge box (7) in two batches; S2, inserting the two oil-draining mechanisms (15) into the pressing chamber (8) respectively in cooperation with the walnut pieces input twice, and arranging the walnut pieces in a manner of pressing a layer of the walnut pieces with one oil-draining mechanism (15); S3, rotating the equipment seat (4) to a specified position, and using the plug shaft (11) to plug into the support column (2) to fix the equipment seat (4); S4, starting the hydraulic press (5), so that the output shaft of the hydraulic press (5) gradually descends and squeezes downward to squeeze the walnut pieces.

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