Rapeseed oil refining device and process

Abstract

The invention discloses a rapeseed oil refining device and process in the technical field of rapeseed oil refining, the rapeseed oil refining device comprises an oil refining cylinder, a refrigeration pipe is arranged in the oil refining cylinder, the refrigeration pipe is spiral, two ends of the refrigeration pipe are connected with an external refrigerator, and the rapeseed oil refining device is characterized by further comprising two cleaning blocks which are symmetrically arranged, when the two cleaning blocks are closed, the refrigerating pipe can be wrapped; and the first driving mechanism is used for driving the cleaning block to move along the refrigeration pipe to clean wax ester on the surface of the refrigeration pipe.

Description

Technical Field

[0001] The invention relates to the technical field of rapeseed oil refining, in particular to a rapeseed oil refining device and process. Background Art

[0002] The defatting of rapeseed oil is mainly achieved through winterization, which is a specific treatment or control process. In the field of oil processing, winterization is a method of crystallization separation. By cooling the oil to a specific temperature, components with a higher freezing point such as glyceride are crystallized and precipitated, thereby achieving the separation of oil and solid fat.

[0003] When the rapeseed oil is degreased by the winterization method, a cooling pipe or a refrigeration pipe is usually used to cool the rapeseed oil. When the cooling pipe or the refrigeration pipe inserted into the oil refining equipment is working, the surface temperature of the cooling pipe and the refrigeration pipe is the lowest. Therefore, the solid ester in the rapeseed oil will adhere to the surface of the cooling pipe when crystallizing, and the thickness of the solid ester attached to the surface of the cooling pipe will become thicker and thicker as time goes by. If it is not cleaned in time, it will affect the heat exchange between the cold air in the cooling pipe and the rapeseed oil.

[0004] Based on this, the present invention designs a rapeseed oil refining device and process to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a rapeseed oil refining device and process to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rapeseed oil refining device, comprising an oil refining cylinder, wherein a refrigeration pipe is arranged in the oil refining cylinder, wherein the refrigeration pipe is spiral and both ends are connected to an external refrigerator, and the device is characterized in that it also includes: a cleaning block, which is arranged in two symmetrical portions, and the two cleaning blocks can wrap the refrigeration pipe when closed; and a first driving mechanism, which is used to drive the cleaning block to move along the refrigeration pipe to clean the wax esters on the surface of the refrigeration pipe.

[0007] As a further solution of the present invention, the first driving mechanism includes: a driving shaft, which is rotatably connected to the oil refining cylinder and coaxially arranged with the refrigeration pipe, and the rotating shaft of the driving shaft is transmission-connected to a motor located at the bottom of the oil refining cylinder; a sliding seat, which is coaxially arranged with the driving shaft and sleeved on the outside of the driving shaft, and the cleaning block is installed at the end of the sliding seat.

[0008] As a further solution of the present invention, the two cleaning blocks are rotatably mounted on the ends of the sliding seat and gears are fixedly mounted on the rotating shafts, the two gears mesh with each other, the upper gear meshes with a rack rod, the rack rod is elastically slidably connected to the sliding seat in the horizontal direction, the side of the rack rod is provided with a wedge rod capable of driving it to move, and the wedge rod is installed on the top of the oil refining cylinder; the side of the rack rod is also provided with a limit rod capable of limiting it, and the limit rod is slidably connected to the sliding seat in the vertical direction; a wedge block is fixedly connected to the bottom of the oil refining cylinder, and the wedge block can drive the limit rod to move upward to cancel the limit on the rack rod when the cleaning block moves to the bottom end of the refrigeration pipe; a driving assembly is also provided in the oil refining cylinder, and after the cleaning block moves to the bottom end of the refrigeration pipe, the driving assembly can drive the sliding seat and the cleaning block to move upward back to the initial position to wrap the top end of the refrigeration pipe.

[0009] As a further solution of the present invention, the driving assembly includes an elastic member, one end of the elastic member is connected to the slide seat, and the other end is abutted against the driving shaft. When the slide seat moves downward, the elastic member is compressed. After the cleaning block moves downward to the bottom end of the refrigeration pipe and no longer wraps the refrigeration pipe, the elastic force of the elastic member can drive the slide seat to move upward.

[0010] As a further solution of the present invention, the driving assembly includes a slide plate; the slide plate is arranged on the side of the driving shaft, and the slide plate is relatively fixed to the driving shaft when the cleaning block is performing cleaning work, and the slide plate is relatively fixed to the oil refining cylinder when the cleaning block completes the cleaning work and moves upward; the slide seat is slidably connected to the slide plate in the vertical direction; a threaded groove is provided on the circumferential side wall of the driving shaft, and a protrusion that can cooperate with the threaded groove is elastically and slidably installed inside the slide seat, and the protrusion is connected to the rack rod through a traction rope; when the rack rod drives the two cleaning blocks to close and wrap the refrigeration pipe, the rack rod can drive the protrusion to move to the outside of the threaded groove through the traction rope to disengage from the threaded groove.

[0011] As a further solution of the present invention, a docking groove is provided on the top of the driving shaft, and the docking groove is composed of a connected square groove and a cylindrical groove, the cylindrical groove is located above the square groove, and a fixed column capable of cooperating with the cylindrical groove is fixedly installed on the top of the sliding plate, and the fixed column is slidably connected in the vertical direction with a block capable of cooperating with the square groove; a linear driving mechanism for driving the block to move in the vertical direction is installed on the top of the refining cylinder.

[0012] As a further solution of the present invention, the linear drive mechanism includes a cylinder, which is fixedly mounted on the top of the refinery cylinder. A turntable is fixedly mounted on the output end of the cylinder, and the turntable is rotatably connected to the clamping block.

[0013] As a further solution of the present invention, the wedge-shaped rod is slidably connected to the oil refining cylinder in the vertical direction and is fixedly connected to the turntable via a fixing rod.

[0014] A rapeseed oil refining process uses a cleaning block to clean wax esters on the surface of a refrigeration tube during a degreasing process.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention arranges a cleaning block and a first driving mechanism. The first driving mechanism can drive the cleaning block wrapped around the refrigeration pipe to perform spiral motion along the refrigeration pipe. The cleaning block can scrape off the solid ester attached to the surface of the refrigeration pipe, and then the solid ester can fall to the bottom of the oil refining cylinder. The solid ester attached to the surface of the refrigeration pipe can be prevented from slowly accumulating to form an insulating layer to block the heat exchange between the cold air in the refrigeration pipe and the rapeseed oil in the oil refining cylinder, so that the rapeseed oil can be better degreased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0019] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0020] Figure 4 It is a schematic diagram of the structure of the cleaning block, the slide seat and the upper part thereof of the present invention;

[0021] Figure 5 It is a schematic diagram of the connection relationship and position relationship of the rack rod, the protrusion and the traction rope of the present invention;

[0022] Figure 6 It is a schematic cross-sectional view of part of the structure of the present invention;

[0023] Figure 7 It is a schematic cross-sectional view of the drive shaft structure of the present invention.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1-refining cylinder, 2-refrigeration pipe, 201-air inlet, 202-air outlet, 3-cleaning block, 4-driving shaft, 5-motor, 6-slide seat, 7-gear, 8-rack rod, 9-wedge rod, 10-limit rod, 11-wedge block, 12-slide plate, 13-thread groove, 14-bump, 15-traction rope, 16-square groove, 17-cylindrical groove, 18-fixed column, 19-block, 20-cylinder, 21-turntable, 22-fixed rod, 23-oil inlet, 24-filter plate, 25-oil outlet. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-Figure 7 The present invention provides a technical solution: a rapeseed oil refining device, comprising an oil refining cylinder 1, a refrigeration pipe 2 is arranged in the oil refining cylinder 1, the refrigeration pipe 2 is spiral and both ends are connected to an external refrigerator, and is characterized in that: it also includes a cleaning block 3 and a first driving mechanism; the cleaning blocks 3 are arranged in two symmetrical arrangements, and the two cleaning blocks 3 can wrap the refrigeration pipe 2 when closed; the first driving mechanism is used to drive the cleaning block 3 to move along the refrigeration pipe 2 to clean the wax ester on the surface of the refrigeration pipe 2.

[0028] The rapeseed oil to be defatted is added into the oil refining cylinder 1 from the oil inlet 23, and the external refrigerator will cool the air in the refrigeration pipe 2, and then the cold air in the cooling pipe 2 will pass through the air inlet 201 of the refrigeration pipe 2, and the cold air in the cooling pipe 2 located in the oil refining cylinder 1 will exchange heat with the rapeseed oil to cool the rapeseed oil in the oil refining cylinder 1, and then the air after the heat exchange in the refrigeration pipe 2 will enter the refrigerator again from the air outlet for cooling, and the air circulation work in the refrigeration pipe 2 realizes the cooling treatment of the rapeseed oil; by setting the refrigeration pipe 2 in a spiral shape, the contact area between the refrigeration pipe and the rapeseed oil can be greatly increased, and the cooling effect can be improved; under low temperature conditions, the solid esters (mainly If it is waxy, it will crystallize and precipitate. When the solid ester crystallizes and precipitates, it will first adhere to the outer wall of the refrigeration tube 2. The first driving mechanism can drive the cleaning block 3 wrapped around the refrigeration tube 2 to make a spiral motion along the refrigeration tube 2. The cleaning block 3 can scrape off the solid ester attached to the surface of the refrigeration tube 2, and then the solid ester can fall to the bottom of the oil refining cylinder 1; it can prevent the solid ester attached to the surface of the refrigeration tube 2 from slowly accumulating to form a heat insulation layer to block the cold air in the refrigeration tube 2 from heat exchange with the rapeseed oil in the oil refining cylinder 1, so that the rapeseed oil can be better defatted; after the solid ester in the rapeseed oil crystallizes and precipitates to a certain extent, the defatted rapeseed oil can be filtered by the filter plate 24 and then discharged from the oil outlet 25 of the oil refining cylinder 1.

[0029] Specifically, Figure 2 As shown, the first driving mechanism includes a driving shaft 4 and a slide 6; the driving shaft 4 is rotatably connected to the refinery cylinder 1 and is coaxially arranged with the refrigeration pipe 2, and the rotating shaft of the driving shaft 4 is transmission-connected with a motor 5 located at the bottom of the refinery cylinder 1; the slide 6 is coaxially arranged with the driving shaft 4 and sleeved on the outside of the driving shaft 4, and the cleaning block 3 is installed at the end of the slide 6.

[0030] When the motor 5 is working, it can drive the driving shaft 4 to rotate, and the driving shaft 4 will drive the cleaning block 3 to rotate synchronously through the slide 6. Since the cleaning block 3 wraps the refrigeration pipe 2, the sliding seat 6 will drive the cleaning block 3 to move along the surface of the refrigeration pipe 2 when it rotates, and the cleaning block 3 will move downward while rotating; the cleaning block 3 can make a spiral motion along the surface of the refrigeration pipe 2; in this embodiment, after the cleaning block 3 moves to the bottom end of the refrigeration pipe 2, the motor 5 rotates in the opposite direction, so that the cleaning block 3 moves upward along the refrigeration pipe 2 and returns to the bottom end. Figure 2 The initial position is shown, and the cycle continues.

[0031] Specifically, Figure 2-Figure 4 As shown, the two cleaning blocks 3 are rotatably mounted on the ends of the slide 6 and gears 7 are fixedly mounted on the rotating shafts, the two gears 7 mesh with each other, the upper gear 7 meshes with a rack rod 8, the rack rod 8 is elastically slidably connected to the slide 6 in the horizontal direction, and a wedge rod 9 capable of driving the rack rod 8 to move is arranged on the side of the rack rod 8, and the wedge rod 9 is installed on the top of the refinery cylinder 1; a limit rod 10 capable of limiting the position of the rack rod 8 is also arranged on the side of the rack rod 8, and the limit rod 10 is slidably connected to the slide 6 in the vertical direction; a wedge block 11 is fixedly connected to the bottom of the refinery cylinder 1, and the wedge block 11 can drive the limit rod 10 to move upward to cancel the limit on the rack rod 8 when the cleaning block 3 moves to the bottom end of the refrigeration pipe 2; a driving assembly is also arranged in the refinery cylinder 1, and after the cleaning block 3 moves to the bottom end of the refrigeration pipe 2, the driving assembly can drive the slide 6 and the cleaning block 3 to move upward back to the initial position to wrap the top end of the refrigeration pipe 2.

[0032] In the initial state, the two cleaning blocks 3 are in a closed state of wrapping the refrigeration pipe 2. When the driving shaft 4 rotates to drive the slide 6 to drive the cleaning block 3 to move downward along the surface of the refrigeration pipe 2 to the lowest point, the wedge block 11 set at the bottom of the refining cylinder 1 will drive the limit rod 10 to move upward through the inclined surface, and the limit rod 10 will cancel the limit on the rack rod 8; it should be noted that in Figure 2 , Figure 3 as well as Figure 4In this state, the spring connected to the rack rod 8 is in a stretched state. After the limit rod 10 cancels the limit on the rack rod 8, the rack rod 8 will move to the side away from the cleaning block 3 under the elastic force of the spring, and the rack rod 8 will drive the upper cleaning block 3 to rotate upward and the lower cleaning block 3 to rotate downward through the gear 7; the two cleaning blocks 3 will be opened and no longer wrap the refrigeration pipe; at this time, the motor 5 will stop working, and then the driving assembly will drive the slide 6 to drive the cleaning block 3 to move quickly upward and back to the top. When the slide 6 moves to the top, the wedge-shaped rod 9 set on the top of the inner wall of the refining cylinder 1 will drive the rack rod 8 to move to the side close to the cleaning block 3, and at this time, the rack rod 8 will drive the two cleaning blocks through the gear 7. 3 is closed, the two cleaning blocks 3 will wrap the refrigeration pipe 2 again, and then the motor 5 can work again, and the motor 5 can always keep rotating in the same direction; because after the cleaning block 3 moves to the lowest point, the cleaning block 3 returns to the initial position by the reverse rotation of the motor 5, and when the cleaning block 3 moves upward, the cleaning gap for the bottom surface of the refrigeration pipe 2 is too short, and the cleaning gap for the top surface of the refrigeration pipe 2 is too long, which will increase the cleaning interval of the solid ester attached to the surface of the refrigeration pipe 2; the cleaning block 3 is quickly returned to the top of the refrigeration pipe 2 by the driving mechanism, so that the cleaning interval of the cleaning block 3 for the solid ester on the surface of the refrigeration pipe 2 can be more reasonable, and the cleaning efficiency of the solid ester on the surface of the refrigeration pipe 2 can be improved.

[0033] Specifically, Figure 2 As shown, the driving assembly includes an elastic member, one end of the elastic member is connected to the slide 6, and the other end is abutted against the driving shaft 4. When the slide 6 moves downward, the elastic member is compressed. After the cleaning block 3 moves downward to the bottom end of the refrigeration pipe 2 and no longer wraps the refrigeration pipe 2, the elastic force of the elastic member can drive the slide 6 to move upward.

[0034] In this embodiment, the driving component is configured as an elastic component such as an elastic rope, a spring or a spring sheet. When the slide 6 moves downward, it drives the elastic component to compress. After the cleaning block 3 moves downward to the bottom of the refrigeration pipe 2 and no longer wraps the refrigeration pipe 2, the elastic force of the elastic component can drive the slide 6 and the cleaning block 3 to quickly move upward back to the position as shown in FIG. Figure 2 Initial position shown.

[0035] Specifically, Figure 2-Figure 5As shown, the driving assembly includes a slide plate 12; the slide plate 12 is arranged on the side of the driving shaft 4, and when the cleaning block 3 is performing the cleaning work, the slide plate 12 is relatively fixed to the driving shaft 4, and when the cleaning block 3 completes the cleaning work and moves upward, the slide plate 12 is relatively fixed to the refinery cylinder 1; the slide seat 6 is slidably connected to the slide plate 12 in the vertical direction; a threaded groove 13 is provided on the circumferential side wall of the driving shaft 4, and a protrusion 14 that can cooperate with the threaded groove 13 is elastically and slidably installed inside the slide seat 6, and the protrusion 14 is connected to the rack rod 8 through a traction rope 15; when the rack rod 8 drives the two cleaning blocks 3 to close and wrap the refrigeration pipe 2, the rack rod 8 can drive the protrusion 14 to move to the outside of the threaded groove 13 through the traction rope 15 to disengage from the threaded groove 13.

[0036] In this embodiment, during the process that the driving shaft 4 rotates to drive the slide 6 and the cleaning block 3 to rotate and move downward along the refrigeration pipe 3, the slide plate 12 remains relatively fixed with the driving shaft 4, and at this time, the slide plate 12 guides the downward movement of the slide 6; it should be noted that, since the highest point and the lowest point of the spiral section of the refrigeration pipe 2 are in the same vertical plane (that is, the refrigeration pipe thread is an integer number of circles), when the cleaning block 3 moves downward to the bottom of the refrigeration pipe 2, the number of revolutions of the cleaning block 3 is also an integer number of circles, and the slide plate 12 will be in Figure 2 The state shown; at this time, the limit rod 10 moves upward under the action of the wedge block 11 to cancel the limit on the rack rod 8. When the rack rod 8 moves away from the cleaning block 3 under the action of the spring, the protrusion 14 will also slide into the thread groove 13 under the elastic force of the spring, and the protrusion 12 will be inserted into the thread groove 13; at this time, the slide plate 12 and the oil refining cylinder 1 remain relatively fixed, and the slide plate 12 and the drive shaft 4 rotate relatively; then the motor 5 can drive the drive shaft 4 to continue to rotate, and the rotation direction of the drive shaft 4 remains unchanged. At this time, the rotation of the drive shaft 4 will drive the protrusion 14 and the slide seat 6 to move upward through the thread groove 13, Until the slide 6 moves upward to the initial position; because when the slide 6 moves downward to compress the elastic part, the elastic part will apply an upward thrust to the slide 6, which will cause the cleaning block 3 to apply an upward thrust to the refrigeration pipe 2 when moving along the refrigeration pipe 2, which can easily cause the refrigeration pipe 2 to be damaged by the force. In this embodiment, when the cleaning block 3 cleans the refrigeration pipe 2, it will not cause excessive damage to the refrigeration pipe 2, and the cleaning block 3 can move smoothly upward back to the initial position. The smooth upward movement of the cleaning block 3 can slightly stir the rapeseed oil in the refining cylinder 1, which can improve the efficiency of the crystallization of the solid ester.

[0037] Specifically, Figure 2 , Figure 6 and Figure 7As shown, a docking groove is provided on the top of the driving shaft 4, and the docking groove is composed of a connected square groove 16 and a cylindrical groove 17. The cylindrical groove 17 is located above the square groove 16. A fixed column 18 capable of cooperating with the cylindrical groove 17 is fixedly installed on the top of the slide plate 12. The fixed column 18 is slidably connected in the vertical direction with a block 19 capable of cooperating with the square groove 16; a linear driving mechanism for driving the block 19 to move in the vertical direction is installed on the top of the refining cylinder 1.

[0038] exist Figure 2 and Figure 6 In the state shown, the block 19 is located in the square groove 16, and the slide plate 12 and the drive shaft remain relatively fixed under the cooperation of the block 19 and the square groove 16; when the cleaning block 3 moves downward to the bottom end of the refrigeration pipe 2, the linear drive mechanism drives the block 19 to move upward, so that the block 19 is separated from the square groove 16, and the drive shaft 4 is connected with the slide plate 12 through the fixing column 18. Since the fixing column 18 is cylindrical and is located in the cylindrical groove 17, the slide plate 12 and the drive shaft 4 are in a state of relative rotation, and the block 19 will move upward to a state of being engaged with the top end of the refinery cylinder 1, and the slide plate 12 and the refinery cylinder 1 are in a relatively fixed state; then the slide plate 12 will not rotate when the drive shaft 4 rotates again, and the slide plate 6 can move upward under the guiding effect of the slide plate 12; after the slide plate 6 and the cleaning block 3 move to the top end of the refrigeration pipe 2, the linear drive mechanism drives the block 19 to move downward and insert it into the square groove 16, and then the slide plate 12 and the drive shaft 4 can be fixed again.

[0039] Specifically, Figure 6 As shown, the linear drive mechanism includes a cylinder 20, which is fixedly installed on the top of the refinery cylinder 1. A turntable 21 is fixedly installed on the output end of the cylinder 20, and the turntable 21 is rotatably connected to the block 19; the cylinder 20 can drive the block 19 to move in the vertical direction through the turntable 21.

[0040] Specifically, Figure 3 and Figure 6 As shown, the wedge rod 9 is slidably connected to the refining cylinder 1 in the vertical direction and is fixedly connected to the turntable 21 through the fixed rod 22; after the cleaning block 3 moves upward to the top of the refrigeration pipe 2, when the cylinder 20 drives the block 19 to move downward, the turntable 21 will drive the wedge rod 9 to move downward through the fixed rod 22, thereby driving the rack rod 8 to move toward the side close to the cleaning block 3. In this embodiment, the wedge rod 9 will drive the cleaning block 3 to close only after the cleaning block 3 moves smoothly to the highest point, so that the cleaning block 3 can better wrap the refrigeration pipe.

[0041] A rapeseed oil refining process uses a cleaning block to clean wax esters on the surface of a refrigeration tube during a degreasing process.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapeseed oil refining device, comprising an oil refining cylinder (1), wherein a refrigeration pipe (2) is arranged in the oil refining cylinder (1), wherein the refrigeration pipe (2) is spiral and has two ends connected to an external refrigerator, characterized in that: Also includes: The cleaning blocks (3) are arranged in two symmetrical positions, and the two cleaning blocks (3) are capable of wrapping the refrigeration pipe (2) when closed; The first driving mechanism is used to drive the cleaning block (3) to move along the refrigeration pipe (2) to clean the wax ester on the surface of the refrigeration pipe (2).

2. A rapeseed oil refining device according to claim 1, characterized in that: The first driving mechanism comprises: A drive shaft (4) is rotatably connected to the oil refining cylinder (1) and is coaxially arranged with the refrigeration pipe (2); a motor (5) located at the bottom of the oil refining cylinder (1) is transmission-connected to the rotation axis of the drive shaft (4); The slide seat (6) is coaxially arranged with the driving shaft (4) and sleeved on the outside of the driving shaft (4), and the cleaning block (3) is installed on the end of the slide seat (6).

3. A rapeseed oil refining device according to claim 2, characterized in that: The two cleaning blocks (3) are both rotatably mounted on the ends of the slide (6) and a gear (7) is fixedly mounted on the rotating shaft. The two gears (7) are meshed with each other. The upper gear (7) is meshed with a rack rod (8). The rack rod (8) is elastically slidably connected to the slide (6) in the horizontal direction. A wedge rod (9) capable of driving the rack rod to move is arranged on the side of the rack rod (8). The wedge rod (9) is installed on the top of the oil refining cylinder (1); a limiting rod (10) capable of limiting the position of the rack rod (8) is also arranged on the side of the rack rod (8). The limiting rod (10) is The rod (10) is slidably connected to the slide seat (6) in the vertical direction; a wedge block (11) is fixedly connected to the bottom of the oil refining cylinder (1), and the wedge block (11) can drive the limit rod (10) to move upward to cancel the limit on the rack rod (8) when the cleaning block (3) moves to the bottom end of the refrigeration pipe (2); a driving component is also arranged in the oil refining cylinder (1), and after the cleaning block (3) moves to the bottom end of the refrigeration pipe (2), the driving component can drive the slide seat (6) and the cleaning block (3) to move upward back to the initial position to wrap the top end of the refrigeration pipe (2).

4. A rapeseed oil refining device according to claim 3, characterized in that: The driving assembly includes an elastic member, one end of which is connected to a slide seat (6) and the other end of which is in contact with a driving shaft (4). When the slide seat (6) moves downward, the elastic member is compressed. After the cleaning block (3) moves downward to the bottom end of the refrigeration pipe (2) and no longer wraps the refrigeration pipe (2), the elastic force of the elastic member can drive the slide seat (6) to move upward.

5. A rapeseed oil refining device according to claim 3, characterized in that: The driving assembly comprises a slide plate (12); the slide plate (12) is arranged on the side of the driving shaft (4); when the cleaning block (3) performs cleaning work, the slide plate (12) and the driving shaft (4) are relatively fixed; when the cleaning block (3) completes the cleaning work and moves upward, the slide plate (12) and the oil refining cylinder (1) are relatively fixed; the slide seat (6) and the slide plate (12) are slidably connected in the vertical direction; a thread groove (13) is provided on the circumferential side wall of the driving shaft (4); a convex block (14) capable of cooperating with the thread groove (13) is elastically slidably installed inside the slide seat (6); the convex block (14) is connected to the rack rod (8) through a traction rope (15); when the rack rod (8) drives the two cleaning blocks (3) to close and wrap the refrigeration pipe (2), the rack rod (8) can drive the convex block (14) to move to the outside of the thread groove (13) through the traction rope (15) to disengage from the thread groove (13).

6. A rapeseed oil refining device according to claim 5, characterized in that: The top of the driving shaft (4) is provided with a docking groove, the docking groove is composed of a connected square groove (16) and a cylindrical groove (17), the cylindrical groove (17) is located above the square groove (16), the top of the slide plate (12) is fixedly installed with a fixing column (18) capable of cooperating with the cylindrical groove (17), the fixing column (18) is slidably connected in the vertical direction with a clamping block (19) capable of cooperating with the square groove (16); the top of the oil refining cylinder (1) is installed with a linear driving mechanism for driving the clamping block (19) to move in the vertical direction.

7. A rapeseed oil refining device according to claim 6, characterized in that: The linear drive mechanism comprises a cylinder (20), wherein the cylinder (20) is fixedly mounted on the top of the oil refining cylinder (1), and a rotating disk (21) is fixedly mounted on the output end of the cylinder (20), wherein the rotating disk (21) is rotatably connected to a clamping block (19).

8. A rapeseed oil refining device according to claim 7, characterized in that: The wedge-shaped rod (9) is slidably connected to the oil refining cylinder (1) in the vertical direction and is fixedly connected to the rotating disk (21) via a fixing rod (22).

9. A rapeseed oil refining process, characterized in that: The rapeseed oil is degreased using the refining device as described in any one of claims 1 to 8.

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