Edible oil high-quality processing production line

Abstract

The invention discloses an edible oil high-quality processing production line which comprises a shell-kernel separator, a drying machine, an oil press, a refining pot, an oil storage tank, an oil storage tank, an oil storage tank, a control system and a control system, wherein the shell-kernel separator is responsible for separating shells and kernels of oil plants, and the drying machine is used for drying the seed kernels separated by the shell-kernel separator and conveying the seed kernels dried by the drying machine into the oil press for oil pressing; edible oil primarily pressed by the oil press is pumped into the refining pot in a pumping manner to be refined, the edible oil refined by the refining pot is pumped into the decolorizing tank and is decolorized by a mixed decolorizing agent, the edible oil decolorized by the decolorizing tank is mixed with the decolorizing agent, and the tail end filtering device is used for filtering the edible oil mixed with the decolorizing agent. Pumping into the tail end filtering device to separate the decolorizing agent in the edible oil; the production line can realize automatic cleaning and deslagging.

Description

Technical Field

[0001] The present invention relates to a high-quality processing production line for edible oil. Background Art

[0002] In the field of edible oil refining production, the decolorization process is a key link to improve the quality of oil. In traditional processes, adsorbents such as clay are generally used to decolorize crude oil, and then solid-liquid separation equipment is needed to remove the decolorizer particles mixed in the oil phase. Currently, plate and frame filters or bag filters are mainly used in the industry for decolorizer separation, but these devices have the following technical defects:

[0003] Filter efficiency decay problem: As the filtration process continues, the decolorizer particles will gradually block the pore structure of the filter medium (such as filter cloth). When the decolorized oil passes through the end filtration device, the clay particles continuously accumulate on the inner wall of the filter bag (filter cloth), resulting in a reduction in the effective diameter of the filter pores and an exponential increase in the filtration resistance. Experimental data shows that after continuous operation for 4 hours, the filtration efficiency can drop by more than 60%.

[0004] Disadvantages of manual slag removal: Existing equipment needs to be shut down regularly for manual slag discharge, and the efficiency of manual slag discharge is extremely low, and the equipment downtime is relatively long.

[0005] Based on the above problems, we have designed a high-quality processing production line for edible oil that can achieve automatic cleaning and slag discharge. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a high-quality processing production line for edible oil that can achieve automatic cleaning and slag discharge.

[0007] To solve the above problems, the present invention adopts the following technical solutions:

[0008] A high-quality processing production line for edible oil, comprising,

[0009] A shell-kernel separator, responsible for separating the shells and kernels of oilseeds,

[0010] A dryer, drying the kernels separated by the shell-kernel separator,

[0011] An oil press, feeding the kernels dried by the dryer into the oil press for oil extraction,

[0012] A refining pot, pumping the edible oil after primary pressing by the oil press into the refining pot for refining,

[0013] A decolorization tank, pumping the edible oil after being refined by the refining pot into the decolorization tank, and decolorizing it by mixing with a decolorizer. It also includes,

[0014] Terminal filtration device. The edible oil after being decolorized in the decolorization tank is mixed with a decolorizing agent and is pumped to the terminal filtration device to separate the decolorizing agent from the edible oil.

[0015] Preferably, the terminal filtration device includes a tank body, a tank cover, an extrusion device, a filter bag and a passive slag discharging device. The tank cover and the passive slag discharging device are respectively installed at the upper and lower ends of the tank body, and the filter bag is installed between the tank cover and the passive slag discharging device. The edible oil mixed with the decolorizing agent enters the filter bag through the center of the tank cover. The oil is filtered out through the filter holes on the surface of the filter bag, and the residue is intercepted in the filter bag. The extrusion device is installed through the tank cover, and the filter bag passes through the extrusion device. After the extrusion device descends, it extrudes the filter bag, extrudes the oil contained in the residue in the filter bag, and squeezes and pushes the residue in the filter bag towards the lower part of the filter bag. Finally, the extrusion device pushes the passive slag discharging device to descend, so that the residue in the filter bag is discharged through the passive slag discharging device. An oil outlet pipe is welded at a position close to the bottom on the side of the tank body.

[0016] Preferably, a connecting seat is provided at the center position of the tank cover. The center of the connecting seat has a vertically penetrating stepped hole. An upper connecting pipe is assembled at the stepped hole. A gland is threadedly connected to the top of the connecting seat. A stop washer is clamped between the gland and the upper connecting pipe. A connecting end for connecting an oil pipe is provided at the axis center of the gland. A first pressing ring is threadedly connected to the lower end of the upper connecting pipe. The upper end of the filter bag is clamped by the upper connecting pipe and the first pressing ring.

[0017] Preferably, a downwardly protruding lower connecting pipe is provided at the axis center of the bottom of the tank body. The lower connecting pipe is conical, and its diameter gradually decreases upward. A first stepped hole is machined at the axis center of the lower connecting pipe. A second pressing ring is threadedly connected in the first stepped hole. The lower end of the filter bag is turned outwards and limited to the stepped surface of the first stepped hole, and is clamped by screwing up the second pressing ring.

[0018] Preferably, the extrusion device includes a hydraulic telescopic rod, an outer bracket, an inner bracket device, a roller structure, an upper expanding plate, a lower tightening plate, and a force application rod group. The outer bracket is fixed to the top of the can lid, and there are two outer brackets arranged left and right. The number of hydraulic telescopic rods is the same as that of the outer brackets, and the hydraulic telescopic rods are fixed to the top of the outer brackets. Two roller structures are arranged in parallel, and the roller structures are slidably installed through the inner bracket device. The filter bag passes through between the two roller structures. The inner bracket device is driven to displace by the hydraulic telescopic rod, and the force application rod group displaces synchronously with the inner bracket device. The upper expanding plate and the lower tightening plate are respectively located at the upper and lower parts of the inner wall of the can body. When the hydraulic telescopic rod retracts, it drives the inner bracket device to displace upward. At this time, the two roller structures on both sides are in passive contact with the upper expanding plate, and the distance between the two roller structures expands, and the extrusion force on the filter bag disappears. When the hydraulic telescopic rod extends downward, the inner bracket device drives the two roller structures to move downward. During the downward movement, the two roller structures approach each other and then squeeze the filter bag. When the roller structures move downward to the position of the lower tightening plate, the distance between the two roller structures is rigidly shortened.

[0019] Preferably, the inner bracket device includes two parallel cross bars. At both ends of each cross bar, a limit cap is fixed. At the middle position of each cross bar, a connecting plate is fixed. The upper end of the connecting plate is fixedly connected with a sliding rod. The sliding rod passes upward through the can lid and is fixed to the movable end of the hydraulic telescopic rod. Two front and rear springs are assembled on each cross bar. The roller structure is slidably installed between the two cross bars. Under the action of the front and rear springs, the two roller structures approach each other. The force application rod group is installed through the sliding rod.

[0020] Preferably, the roller structure includes a central rod. A roller is rotatably installed on the central rod. A bearing is assembled between the central rod and the roller. At both ends of the central rod, a sliding plate is processed. The sliding plate has a through hole for passing through the cross bar. The spring acts between the limit cap and the sliding plate. A through groove is processed on the plate surface of the sliding plate. A guide wheel is rotatably installed through the through groove. The filter bag passes through between the two rollers. The upper expanding plate and the lower tightening plate are both matched with the guide wheel. The two side surfaces of the upper expanding plate are first guiding inclined surfaces, and the distance between the two first guiding inclined surfaces increases upward. The two inner side surfaces of the lower tightening plate are second guiding inclined surfaces, and the distance between the two second guiding inclined surfaces gradually decreases downward.

[0021] Preferably, the passive slag discharging device includes a bottom tank, a sealing body and a sliding shaft. The bottom tank is flange-connected to the bottom of the tank body and corresponds to the bottom opening of the lower connecting pipe. A guiding pipe is arranged at the center of the inner bottom of the bottom tank. The sliding shaft displaces along the axial direction of the guiding pipe. The sealing body is fixed to the upper end of the sliding shaft. A sealing ring is clamped on the outer wall of the sealing body near the upper end. The sealing ring forms a seal with the inner wall of the filter bag. After the sliding shaft descends, the sealing body disengages from the filter bag. A slag discharging pipe is welded at the rear end of the bottom tank; Side brackets are welded on both sides of the bottom tank. Guide sleeves are arranged at the ends of the side brackets. Guide rods are slidably installed through the guide sleeves. A first cross bar is welded to the bottom of the sliding shaft. The lower end of the guide rod is fixed to the first cross bar. A bearing plate is welded to the upper end of the guide rod. A first spring is sleeved on the guide rod. The first spring acts between the bearing plate and the guide sleeve. In the state where the first spring is stretched, the sealing body is inserted upward into the filter bag. After the acting rod group descends, it acts on the bearing plate.

[0022] Preferably, the acting rod group includes a connecting piece, an acting rod and an adjustable rod. The connecting piece is fixed to the sliding rod. The acting rod is vertically fixed to the bottom of the connecting piece. The adjustable rod is threadedly connected to the lower end of the acting rod and acts on the bearing plate through the adjustable rod.

[0023] Preferably, the connecting piece includes a connecting pipe. The connecting pipe is fixed to the sliding rod by screws. A U-shaped plate is fixed to the outside of the connecting pipe. A socket is welded to the inside of the U-shaped plate. The upper end of the acting rod is inserted into the socket and then fixed by screws.

[0024] The beneficial effects of the present invention are as follows:

[0025] In this technical solution, the filter bag is designed to filter edible oil, and the decolorizing agent contained in the edible oil is separated and intercepted. When the equipment operates for a period of time, the oil inlet is stopped, and the filter bag is rolled and extruded by the extrusion device to extrude the intercepted particulate matter downward, so that the filter bag restores its filtering ability. Finally, the intercepted particulate matter is cleaned out from the bottom of the equipment to complete the passive slag discharging action. The actual measurement shows that this design can keep the filtration flux above 85% of the initial value, and the single-time slag cleaning operation only takes 90-120 seconds, and the comprehensive filtration efficiency of the system is increased by 2.3 times.

[0026] This technical solution can achieve automatic cleaning, without manual disassembly cleaning, with a relatively fast cleaning speed and more convenient maintenance, and at the same time avoid delaying production.

[0027] The extrusion device can reduce the oil content rate of the filter residue from 18-25% in the traditional process to less than 7.5%. It is expected that 1.2-1.8 tons of oil can be recovered more for every 100 tons of decolorized oil processed.

[0028] The structure of this device is simple and the cost is low, which is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 is a schematic structural diagram of the present invention;

[0031] Figure 2 is a front view of the end filtration device;

[0032] Figure 3 is a cross-sectional view of the end filtration device;

[0033] Figure 4 is Figure 3 an enlarged view at A;

[0034] Figure 5 is Figure 3 an enlarged view at B;

[0035] Figure 6 is an installation schematic diagram of the extrusion device;

[0036] Figure 7 is Figure 3 an enlarged view at C;

[0037] Figure 8 is a three-dimensional view of the press roll structure;

[0038] Figure 9 is a structural diagram of the passive slag discharging device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

[0040] Any feature disclosed in this specification (including any additional claims, abstract, and drawings), unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by terms such as "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "central", "end portion", "length", "outer end", etc. are based on the orientation or positional relationships shown in the drawings. These are 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. Therefore, it should not be construed as a limitation to the present invention.

[0042] In addition, in the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0043] In the present invention, unless otherwise clearly specified and defined, terms such as "arranged", "socketed", "connected", "penetrated", "plugged in", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. 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 circumstances.

[0044] Referring to Figure 1 a high-quality processing production line for edible oil as shown, including

[0045] a shell-seed separation machine 1, responsible for separating the shells and seeds of the oil material,

[0046] a dryer 2, drying the seeds separated by the shell-seed separation machine 1,

[0047] an oil press 3, feeding the seeds dried by the dryer 2 into the oil press 3 for oil extraction,

[0048] a refining pot 4, pumping the crude edible oil after primary oil extraction by the oil press 3 into the refining pot 4 for refining,

[0049] a decolorization tank 5, pumping the edible oil after being refined by the refining pot 4 into the decolorization tank 5, and decolorizing it by mixing with a decolorizing agent. It also includes

[0050] a terminal filtering device 6. The edible oil after being decolorized in the decolorization tank 5 is mixed with the decolorizing agent, and the decolorizing agent in the edible oil is separated by pumping it into the terminal filtering device 6.

[0051] In the above technical solution, the decolorizing agent in the edible oil is removed by the terminal filtering device 6.

[0052] In this technical solution, the decolorizing agent used is clay.

[0053] Refer to Figure 2 and Figure 3 As shown, the terminal filtration device 6 includes a tank body 61, a tank cover 62, an extrusion device 63, a filter bag 64 and a passive slag discharging device 65. The tank cover 62 and the passive slag discharging device 65 are respectively installed at the upper and lower ends of the tank body 61, and the filter bag 64 is installed between the tank cover 62 and the passive slag discharging device 65. The edible oil mixed with the decolorizing agent enters the filter bag 64 through the center of the tank cover 62. The oil is filtered out through the filter holes on the surface of the filter bag 64, and the residue is intercepted in the filter bag 64. The extrusion device 63 is installed through the tank cover 62, and the filter bag 64 passes through the extrusion device 63. After the extrusion device 63 descends, it squeezes the filter bag 64, extrudes the oil contained in the residue of the filter bag 64, and squeezes and pushes the residue in the filter bag 64 towards the lower part of the filter bag 64. Finally, the extrusion device 63 pushes the passive slag discharging device 65 to descend, so that the residue in the filter bag 64 is discharged through the passive slag discharging device 65. An oil outlet pipe 66 is welded at a position close to the bottom on the side of the tank body 61.

[0054] In the above technical solution, the edible oil mixed with the decolorizing agent enters the filter bag 64 through the tank cover 62. The edible oil is filtered out by using the micropores on the surface of the filter bag 64, while the decolorizing agent particles with relatively larger particle sizes are intercepted in the filter bag 64.

[0055] After the edible oil is separated, it is discharged along with the oil outlet pipe 66.

[0056] After the equipment operates for a period of time, a large number of particulate matters adhere to the inner wall of the filter bag 64, causing the filter holes of the filter bag 64 to be blocked and the passing efficiency of the edible oil to decrease.

[0057] At this time, by descending the extrusion device 63, the filter bag 64 is squeezed, so that the solid particulate matters attached to the inner wall of the filter bag 64 are squeezed downward, and the filter performance of the filter bag 64 is restored.

[0058] At the same time, this squeezing action will also squeeze out the edible oil contained in the filter bag 64 and the edible oil contained in the particulate matters, so that the edible oil is fully separated.

[0059] As the extrusion device 63 continues to descend, the particulate matters are accumulated at the lower part of the filter bag 64 until the extrusion device 63 acts on the passive slag discharging device 65. By opening the passive slag discharging device 65, the lower part of the filter bag 64 is opened, and the particulate matters after extrusion and oil removal are discharged through the passive slag discharging device 65, completing the cleaning of the filter bag 64.

[0060] The filter hole size of the filter bag is determined according to the interception requirement, usually 1 - 10 microns.

[0061] In this embodiment, the pore size of the filter bag 64 is 6 microns. The filter bag 64 is made of a shear-resistant composite material.

[0062] Refer to Figure 3 and Figure 4 As shown, a connecting seat 621 is provided at the center position of the can lid 62. The center of the connecting seat 621 has a stepped hole vertically penetrating through it. An upper connecting pipe 622 is assembled at the stepped hole. A gland 623 is threadedly connected to the top of the connecting seat 621. A stop washer 624 is clamped between the gland 623 and the upper connecting pipe 622. A connecting end 625 for connecting an oil pipe is provided at the axis center of the gland 623. A first compression ring 626 is threadedly connected to the lower end of the upper connecting pipe 622. The upper end of the filter bag 64 is clamped by the upper connecting pipe 622 and the first compression ring 626.

[0063] This technical solution provides a fixing method for the filter bag 64, which facilitates the maintenance and replacement of the filter bag 64.

[0064] Refer to Figure 3 and Figure 5 As shown, an upwardly convex lower connecting pipe 611 is provided at the axis center of the bottom of the tank body 61. The lower connecting pipe 611 is conical, and its diameter gradually decreases upward. A first stepped hole is machined at the axis center of the lower connecting pipe 611. A second compression ring 612 is threadedly connected in the first stepped hole. The lower end of the filter bag 64 is turned outwards and limited to the stepped surface of the first stepped hole, and is clamped by screwing up the second compression ring 612.

[0065] In the above technical solution, a fixing method for the lower end of the filter bag 64 is provided. After removing the passive slag discharging device 65 and then removing the second compression ring 612, the lower end of the filter bag 64 can be loosened, which facilitates the maintenance and replacement of the filter bag 64.

[0066] Refer to Figure 3As shown, the extrusion device 63 includes a hydraulic telescopic rod 631, an outer bracket 632, an inner bracket device 633, a roller structure 634, an upper expansion plate 635, a lower tightening plate 636 and a force application rod group 637. The outer bracket 632 is fixed to the top of the can lid 62. There are two outer brackets 632 arranged left and right. The number of hydraulic telescopic rods 631 is the same as that of the outer brackets 632. The hydraulic telescopic rod 631 is fixed to the top of the outer bracket 632. There are two roller structures 634 arranged in parallel. The roller structure 634 is slidably installed through the inner bracket device 633. The filter bag 64 passes through between the two roller structures 634. The inner bracket device 633 is driven to displace by the hydraulic telescopic rod 631. The force application rod group 637 displaces synchronously with the inner bracket device 633. The upper expansion plate 635 and the lower tightening plate 636 are respectively located at the upper and lower parts of the inner wall of the tank body 61. When the hydraulic telescopic rod 631 retracts, it drives the inner bracket device 633 to displace upward. At this time, the two roller structures 634 on both sides are in passive contact with the upper expansion plate 635. At this time, the distance between the two roller structures 634 expands, and the extrusion force on the filter bag 64 disappears. When the hydraulic telescopic rod 631 extends downward, the inner bracket device 633 drives the two roller structures 634 to move downward. During the downward movement, the two roller structures 634 approach each other and then squeeze the filter bag 64. When the roller structure 634 moves downward to the position of the lower tightening plate 636, the distance between the two roller structures 634 is forcibly shortened.

[0067] In the above technical solution, the rotatable roller structure 634 is adopted, which is convenient to drive the two roller structures 634 to roll and squeeze along the surface of the filter bag 64 under the action of the hydraulic telescopic rod 631, so as to squeeze the particulate matter attached to the inner wall of the filter bag 64 downward and complete the cleaning work of the filter bag 64.

[0068] Refer to Figure 3 、 Figure 6 and Figure 7 As shown, the inner bracket device 633 includes two parallel cross bars 6331. A limit cap 6332 is fixed at each end of each cross bar 6331. A connecting plate 6333 is fixed at the middle position of each cross bar 6331. The upper end of the connecting plate 6333 is fixedly connected with a sliding rod 6334. The sliding rod 6334 passes upward through the can lid 62 and is fixed to the movable end of the hydraulic telescopic rod 631. There are a front spring 6335 and a rear spring 6335 assembled on each cross bar 6331. The roller structure 634 is slidably installed between the two cross bars 6331. Under the action of the front and rear springs 6335, the two roller structures 634 approach each other. The force application rod group 637 is installed through the sliding rod 6334.

[0069] In the above technical solution, the inner support device 633 is pushed by a spring 6335. Under the action of the spring 6335, the two roller structures 634 approach each other and squeeze against the surface of the filter bag 64.

[0070] As the rigid rod 6331 descends, the roller structure 634 completes the squeezing and cleaning of the filter bag 64.

[0071] Refer to Figure 3 、 Figure 6 and Figure 8 As shown in, the roller structure 634 includes a central rod 6341. A roller 6342 is rotatably mounted on the central rod 6341. A bearing 6343 is assembled between the central rod 6341 and the roller 6342. Slide plates 6344 are machined at both ends of the central rod 6341. The slide plates 6344 have through holes 6345 for passing through the cross bar 6331. The spring 6335 acts between the limit cap 6332 and the slide plate 6344. A through groove 6346 is machined on the plate surface of the slide plate 6344. A guide wheel 6347 is rotatably mounted through the through groove 6346. The filter bag 64 passes between the two rollers 6342. The upper expansion plate 635 and the lower tightening plate 636 both cooperate with the guide wheel 6347. The two side surfaces of the upper expansion plate 635 are first guide inclined surfaces 6351, and the distance between the two first guide inclined surfaces 6351 increases upward. The two inner side surfaces of the lower tightening plate 636 are second guide inclined surfaces 6361, and the distance between the two second guide inclined surfaces 6361 gradually decreases downward.

[0072] In the above technical solution, the roller 6342 can rotate along the central rod 6341, which is convenient for generating a roller pressure on the surface of the filter bag 64 and squeezing the particulate matter at the inner wall of the filter bag 64 downward.

[0073] With the arrangement of the guide wheel 6347, when the roller structure 634 ascends, by moving the guide wheel 6347 along the first guide inclined surface 6351, the distance between the two roller structures 634 is enlarged. At this time, the pressing on the filter bag 64 disappears, which is convenient for the edible oil to enter the filter bag 64.

[0074] When the filter bag 64 needs to be cleaned, the roller structure 634 descends. When it descends to the point where the guide wheel 6347 contacts the second guide inclined surface 6361, a rigid limiting force is generated. As the roller structure 634 continues to descend, the two roller structures 634 are forced to approach each other, generating a further pressing on the filter bag 64.

[0075] When the roller structure 634, driven by the hydraulic telescopic rod 631, descends to the limit position, the acting rod group 637 pushes open the passive slag discharging device 65 to complete the slag discharging work.

[0076] Refer to Figure 5 and Figure 9 As shown, the passive slag discharging device 65 includes a bottom tank 651, a sealing body 652 and a sliding shaft 653. The bottom tank 651 is flange-connected to the bottom of the tank body 61 and corresponds to the bottom opening of the lower connecting pipe 611. A guiding pipe 654 is arranged at the axial center of the inner bottom of the bottom tank 651. The sliding shaft 653 displaces axially along the guiding pipe 654. The sealing body 652 is fixed to the upper end of the sliding shaft 653. A sealing ring 655 is clamped on the outer wall of the sealing body 652 near the upper end. The sealing ring 655 forms a seal with the inner wall of the filter bag 64. After the sliding shaft 653 descends, the sealing body 652 disengages from the filter bag 64. A slag discharging pipe 656 is welded to the rear end of the bottom tank 651; Side brackets 657 are welded on both sides of the bottom tank 651. Guide sleeves 658 are arranged at the ends of the side brackets 657. A guide rod 659 is slidably installed through the guide sleeves 658. A first cross bar 6510 is welded to the bottom of the sliding shaft 653. The lower end of the guide rod 659 is fixed to the first cross bar 6510. A bearing plate 6511 is welded to the upper end of the guide rod 659. A first spring 6512 is sleeved on the guide rod 659. The first spring 6512 acts between the bearing plate 6511 and the guide sleeve 658. In the state where the first spring 6512 is stretched, the sealing body 652 is inserted upward into the filter bag 64. After the actuating rod group 637 descends, it acts on the bearing plate 6511.

[0077] In the above technical solution, the sealing body 652 seals the inner lower end position of the filter bag 64, so that after the mixture of edible oil and decolorizing agent enters the filter bag 64, the edible oil can only be filtered out along the filter holes on the surface of the filter bag 64, while the decolorizing agent is intercepted in the filter bag 64.

[0078] When the filtering capacity of the filter bag 64 is insufficient and the edible oil is continuously pumped into the filter bag 64, the pressure in the filter bag 64 increases sharply. At this time, the sealing body 652 is pushed downward to open, playing an overpressure protection effect on the filter bag 64.

[0079] During normal operation, the filter bag 64 is periodically squeezed and cleaned by the downward movement of the press roll structure 634.

[0080] During the downward movement of the press roll structure 634, the actuating rod group 637 moves downward accordingly. When the actuating rod group 637 moves downward to the limit position, it acts on the bearing plate 6511, causing the sealing body 652 to disengage from the filter bag 64 downward. At this time, the slag discharging work can be completed.

[0081] Refer to Figure 2 and Figure 9As shown, the acting force rod group 637 includes a connecting member 6371, an acting force rod 6372, and an adjustable rod 6373. The connecting member 6371 is fixed to the sliding rod 6334. The acting force rod 6372 is vertically fixed to the bottom of the connecting member 6371. The adjustable rod 6373 is threadedly connected to the lower end of the acting force rod 6372 and acts on the bearing plate 6511 through the adjustable rod 6373.

[0082] The connecting member 6371 includes a connecting pipe 6374. The connecting pipe 6374 is fixed to the sliding rod 6334 by screws. A U-shaped plate 6375 is fixed to the outer side of the connecting pipe 6374. A socket 6376 is welded to the inner side of the U-shaped plate 6375. The upper end of the acting force rod 6372 is inserted into the socket 6376 and then fixed by screws.

[0083] In the above technical solution, the position of the adjustable rod 6373 can be adjusted by threading to facilitate fine adjustment, so that when the roller structure descends to the limit position, it can ensure that the seal body 652 is fully opened.

[0084] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-quality processing production line for edible oil, comprising: A shell-kernel separator (1) responsible for separating the shells and kernels of oilseeds. A dryer (2) for drying the kernels separated by the shell-kernel separator (1). An oil press (3), feeding the kernels dried by the dryer (2) into the oil press (3) for oil extraction. A refining pot (4), pumping the crude oil after primary pressing by the oil press (3) into the refining pot (4) for refining. A decolorization tank (5), pumping the edible oil after being refined by the refining pot (4) into the decolorization tank (5). Decolorizing with a mixed decolorizing agent, characterized in that it further comprises: A terminal filtration device (6), the edible oil mixed with the decolorizing agent after being decolorized by the decolorization tank (5) is pumped to the terminal filtration device (6) to separate the decolorizing agent in the edible oil.

2. The high-quality processing production line for edible oil according to claim 1, characterized in that: The terminal filtration device (6) comprises a tank body (61), a tank cover (62), an extrusion device (63), a filter bag (64) and a passive slag discharging device (65). The tank cover (62) and the passive slag discharging device (65) are respectively installed at the upper and lower ends of the tank body (61). The filter bag (64) is installed between the tank cover (62) and the passive slag discharging device (65). The edible oil mixed with the decolorizing agent enters the filter bag (64) through the center of the tank cover (62). The oil is filtered out through the filter holes on the surface of the filter bag (64), and the residue is intercepted in the filter bag (64). The extrusion device (63) is installed through the tank cover (62), and the filter bag (64) passes through the extrusion device (63). After the extrusion device (63) descends, it squeezes the filter bag (64), extrudes the oil contained in the residue in the filter bag (64), and pushes the residue in the filter bag (64) downward. Finally, the extrusion device (63) pushes the passive slag discharging device (65) downward, so that the residue in the filter bag (64) is discharged through the passive slag discharging device (65). An oil outlet pipe (66) is welded at a position near the bottom on the side of the tank body (61).

3. The high-quality processing production line for edible oil according to claim 2, wherein: A connecting seat (621) is provided at the center position of the tank cover (62). The center of the connecting seat (621) has a vertically penetrating stepped hole. An upper connecting pipe (622) is assembled at the stepped hole. A gland (623) is threadedly connected to the top of the connecting seat (621). A stop washer (624) is clamped between the gland (623) and the upper connecting pipe (622). A connecting end (625) for connecting an oil pipe is provided at the axis of the gland (623). A first compression ring (626) is threadedly connected to the lower end of the upper connecting pipe (622). The upper end of the filter bag (64) is clamped by the upper connecting pipe (622) and the first compression ring (626).

4. The high-quality processing production line for edible oil according to claim 2, characterized in that: At the center of the bottom of the tank body (61), there is an upward convex lower connecting pipe (611). The lower connecting pipe (611) is conical, and its diameter gradually decreases upward. A first stepped hole is machined at the center of the lower connecting pipe (611). A second pressing ring (612) is threadedly connected in the first stepped hole. The lower end of the filter bag (64) is turned outwards and limited to the stepped surface of the first stepped hole, and is clamped by screwing up the second pressing ring (612).

5. The high-quality processing production line for edible oil according to claim 4, wherein: The extrusion device (63) includes a hydraulic telescopic rod (631), an outer bracket (632), an inner bracket device (633), a roller structure (634), an upper expanding plate (635), a lower tightening plate (636) and a force application rod group (637). The outer bracket (632) is fixed to the top of the tank cover (62). There are two outer brackets (632) arranged on the left and right. The number of hydraulic telescopic rods (631) is the same as that of the outer brackets (632). The hydraulic telescopic rod (631) is fixed to the top of the outer bracket (632). Two roller structures (634) are arranged in parallel. The roller structure (634) is slidably installed through the inner bracket device (633). The filter bag (64) passes between the two roller structures (634). The inner bracket device (633) is driven to displace by the hydraulic telescopic rod (631). The force application rod group (637) displaces synchronously with the inner bracket device (633). The upper expanding plate (635) and the lower tightening plate (636) are respectively located at the upper and lower parts of the inner wall of the tank body (61). When the hydraulic telescopic rod (631) retracts, it drives the inner bracket device (633) to displace upward. At this time, the two roller structures (634) on both sides are in passive contact with the upper expanding plate (635). At this time, the distance between the two roller structures (634) expands, and the extrusion force on the filter bag (64) disappears. When the hydraulic telescopic rod (631) extends downward, the inner bracket device (633) drives the two roller structures (634) to move downward. During the downward movement, the two roller structures (634) approach each other and squeeze the filter bag (64). When the roller structure (634) moves downward to the position of the lower tightening plate (636), the distance between the two roller structures (634) is rigidly shortened.

6. The high-quality processing production line for edible oil according to claim 5, characterized in that: The inner support device (633) includes two parallel cross bars (6331). Limiting caps (6332) are fixed at both ends of each cross bar (6331). Connecting plates (6333) are fixed at the middle positions of each cross bar (6331). A sliding rod (6334) is fixedly connected to the upper end of the connecting plate (6333). The sliding rod (6334) passes upward through the tank cover (62) and is fixed to the movable end of the hydraulic telescopic rod (631). Two front and rear springs (6335) are assembled on each cross bar (6331). The roller structure (634) is slidably installed between the two cross bars (6331). Under the action of the front and rear springs (6335), the two roller structures (634) approach each other. The acting rod group (637) is installed through the sliding rod (6334).

7. The high-quality processing production line for edible oil according to claim 6, characterized in that: The roller structure (634) includes a central rod (6341). A roller (6342) is rotatably installed on the central rod (6341). A bearing (6343) is assembled between the central rod (6341) and the roller (6342). Sliding plates (6344) are processed at both ends of the central rod (6341). The sliding plates (6344) have through holes (6345) for passing through the cross bar (6331). The spring (6335) acts between the limiting cap (6332) and the sliding plate (6344). A through groove (6346) is processed on the plate surface of the sliding plate (6344). A guide wheel (6347) is rotatably installed through the through groove (6346). The filter bag (64) passes between the two rollers (6342). The upper expanding plate (635) and the lower tightening plate (636) are both matched with the guide wheel (6347). The two side surfaces of the upper expanding plate (635) are first guiding inclined surfaces (6351), and the distance between the two first guiding inclined surfaces (6351) increases upward. The two inner side surfaces of the lower tightening plate (636) are second guiding inclined surfaces (6361), and the distance between the two second guiding inclined surfaces (6361) gradually decreases downward.

8. The high-quality processing production line for edible oil according to claim 7, characterized in that: The passive slag discharging device (65) includes a bottom tank (651), a sealing body (652) and a sliding shaft (653). The bottom tank (651) is flange-connected to the bottom of the tank body (61) and corresponds to the bottom opening of the lower connecting pipe (611). A guiding pipe (654) is arranged at the axial center of the inner bottom of the bottom tank (651). The sliding shaft (653) displaces axially along the guiding pipe (654). The sealing body (652) is fixed to the upper end of the sliding shaft (653). A sealing ring (655) is clamped on the outer wall of the sealing body (652) near the upper end. The sealing ring (655) forms a seal with the inner wall of the filter bag (64). After the sliding shaft (653) descends, the sealing body (652) disengages from the filter bag (64). A slag discharging pipe (656) is welded to the rear end of the bottom tank (651). Side brackets (657) are welded to both sides of the bottom tank (651). Guide sleeves (658) are arranged at the ends of the side brackets (657). Guide rods (659) are slidably installed through the guide sleeves (658). A first cross bar (6510) is welded to the bottom of the sliding shaft (653). The lower end of the guide rod (659) is fixed to the first cross bar (6510). A bearing plate (6511) is welded to the upper end of the guide rod (659). A first spring (6512) is sleeved on the guide rod (659). The first spring (6512) acts between the bearing plate (6511) and the guide sleeve (658). In the state where the first spring (6512) is stretched, the sealing body (652) is inserted upward into the filter bag (64). After the acting rod group (637) descends, it acts on the bearing plate (6511).

9. The high-quality processing production line for edible oil according to claim 8, characterized in that: The acting rod group (637) includes a connecting member (6371), an acting rod (6372) and an adjustable rod (6373). The connecting member (6371) is fixed to the sliding rod (6334). The acting rod (6372) is vertically fixed to the bottom of the connecting member (6371). The adjustable rod (6373) is threadedly connected to the lower end of the acting rod (6372). The adjustable rod (6373) acts on the bearing plate (6511).

10. The high-quality processing production line for edible oil according to claim 9, characterized in that: The connecting member (6371) includes a connecting pipe (6374). The connecting pipe (6374) is fixed to the sliding rod (6334) by screws. A U-shaped plate (6375) is fixed to the outside of the connecting pipe (6374). A socket (6376) is welded to the inside of the U-shaped plate (6375). The upper end of the acting rod (6372) is inserted into the socket (6376) and then fixed by screws.

Images