Soybean soft wetting and breaking processing device

Abstract

The application relates to the technical field of soybean deep processing, and particularly discloses a soybean soft wetting and crushing processing device, which comprises a crushing box, two symmetrical crushing rollers are arranged in the crushing box, a material bin is arranged above the crushing box, a discharging narrow channel which is communicated with the top of the crushing box is arranged at the lower end of the material bin, a high-temperature water mist mechanism is arranged in the discharging narrow channel, and a negative pressure suction and filtration mechanism is connected to the upper end of the material bin; a discharging roller is rotatably arranged in the discharging narrow channel below a shunt angle box, a plurality of helical line grooves which extend along the axial direction are annularly arranged on the outer circumferential surface of the discharging roller; the soybean can be uniformly distributed by the high-temperature water mist from bottom to top during the discharging process, so that the hardness of the soybean is reduced to a certain extent, the resistance of the soybean during crushing by the subsequent crushing rollers is reduced, the overload of the crushing roller power motor is reduced, and stable operation of the whole device is realized.

Description

Technical Field

[0001] This invention relates to the field of soybean deep processing technology, and specifically discloses a soybean softening and wetting crushing processing device. Background Technology

[0002] In the cold-pressing process of soybeans for oil extraction, soybeans must first be crushed into pieces of a certain size to increase the oil yield during subsequent pressing. Existing soybean crushers mainly use two crushing rollers rotating synchronously in opposite directions, so that the soybeans are crushed by shearing and compressive forces as they pass through the gap between the two crushing rollers.

[0003] For example, invention patent application number 202510285641.4 discloses a soybean crusher for soybean oil production, including a mounting frame, a shell, a protective shell, crushing rollers, connecting gears, fins, and a hollow frame. The shell is connected to the mounting frame, and the protective shell is connected to the side of the shell. Two crushing rollers are symmetrically rotated and connected inside the shell. The outer sides of the crushing rollers are circumferentially spaced with inclined grooves, and the inside of the crushing rollers has symmetrically opened through holes. The connecting gears are connected to the left end of the crushing rollers, and the two connecting gears mesh with each other. The connecting gears are located inside the protective shell, and the fins are installed in the through holes. The hollow frames are symmetrically connected to both sides of the shell, with the left hollow frame located inside the protective shell. This invention discloses a crusher that, through the cooperation of a cooling fan and fins, can send cold air into the through holes of the crushing rollers, allowing the fins to exchange heat with the cold air, thereby cooling the crushing rollers and preventing soybean protein denaturation due to temperature increases during soybean crushing, thus ensuring the quality of the subsequent soybean oil product.

[0004] However, compared to other legumes, soybeans not only have a large particle size but also a relatively hard structure. When using traditional soybean crushers to directly crush soybeans, the soybeans in the hopper are fed in batches between the two crushing rollers. When the crushing rollers crush too many soybeans simultaneously, motor overload frequently occurs, easily damaging the motor. Furthermore, when crushing dry soybeans, the hard physical properties of soybeans easily lead to frequent jamming, and the feeding operation cannot be interrupted in time after jamming occurs, causing soybeans to accumulate above the crushing rollers and affecting subsequent normal operation. Therefore, to address the above-mentioned shortcomings of existing soybean crushers used in soybean oil production, this application proposes a soybean softening and wetting crushing processing device that can effectively solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a soybean softening and wetting crushing processing device to solve the technical problems and shortcomings of existing roller crushers that are prone to motor overload and material jamming during the direct crushing process of soybeans, resulting in poor operation stability of the entire device.

[0006] This invention is achieved through the following technical solution: A soybean softening and humidifying crushing processing device includes a crushing box, inside which two symmetrically arranged crushing rollers are installed, and a power assembly for driving the two crushing rollers is provided on the side of the crushing box. A hopper is provided above the crushing box, and a narrow discharge channel connected to the top of the crushing box is provided at the lower end of the hopper. A high-temperature water mist mechanism is provided in the discharge channel, and a negative pressure suction filtration mechanism is connected to the upper end of the hopper. The high-temperature water mist mechanism includes a mixing pipe, the end of which is connected to a hot air blower via an insulated pipe. A spray chamber is provided in the mixing pipe near the side of the insulated pipe. An atomizing nozzle is installed at the upper end of the spray chamber. The atomizing nozzle is connected to a booster pump via a water pipe. The water inlet of the booster pump is connected to an external water source. Multiple diversion angle boxes are arranged side by side in the discharge channel. The upper end of each diversion angle box is triangular in structure, and both sides of the diversion angle box are provided with mist outlets. The end face of each diversion angle box is connected to the mixing pipe via a connecting pipe. A feeding roller is rotatably installed in the feeding chute located below the diversion angle box. Multiple spiral grooves extending along the axial direction are arranged in a ring array on the outer circular surface of the feeding roller.

[0007] As a further feature of the above scheme, the hopper is an inverted right-angled trapezoid with a wider top and a narrower bottom. A feeding slot is provided at the upper end of one side of the hopper, and a sealing strip is rotatably installed on the feeding slot. An air extraction port is provided at the upper end of the side of the hopper opposite to the feeding slot, and a baffle plate is provided below the air extraction port. The negative pressure suction and filtration mechanism is connected to the air extraction port.

[0008] As a further provision of the above solution, the negative pressure suction filtration mechanism includes a filter box, one side of which is connected to a negative pressure device, and the other side of which is connected to a suction pipe, with the end of the suction pipe connected to the suction port.

[0009] As a further provision of the above scheme, one of the crushing rollers is fixedly installed in the crushing box, and the other crushing roller is limited to move in the crushing box. The crushing box is provided with an adjustment component for driving the limited movement of the crushing roller. The power component includes a transmission box fixed on the outer side of the crushing box. The transmission box is provided with a power motor connected to the fixed crushing roller. Both crushing rollers are provided with meshing gears on their roller shafts.

[0010] As a further feature of the above solution, the adjustment component includes sliding blocks disposed on the roller shafts at both ends of the limiting movement crushing roller. The sliding blocks are connected to the roller shafts via bearings, and limiting slots that interact with the sliding blocks are provided on both sides of the crushing box. A hydraulic cylinder connected to the sliding block is fixedly disposed at the side end of the limiting slot.

[0011] As a further provision of the above scheme, a driven wheel is provided at the outer end of the feed roller shaft, a driving wheel is provided on the crushing roller shaft that limits movement, and a transmission belt is provided between the driving wheel and the driven wheel. A tension adjusting wheel acting on the transmission belt is provided on the outer surface of the crushing box.

[0012] As a further feature of the above scheme, the width and depth of the spiral groove are both set between 1.4 and 1.6 times the average particle size of soybeans.

[0013] As a further feature of the above scheme, each of the two crushing rollers is provided with a feed guide plate in the crushing box above the two crushing rollers, and both feed guide plates guide the soybeans upwards towards the gap between the two crushing rollers. The crushing box below the two crushing rollers is provided with a downwardly inclined receiving guide plate, and the lower inclined end of the receiving guide plate is provided with a screen plate that is inclined in the opposite direction and extends out of the side of the crushing box. The bottom of the crushing box is provided with a discharge conveying auger.

[0014] As a further provision of the above scheme, a scraper elevator with its lower end connected to the screen plate is provided on the side of the crushing box, and a return channel connected to the upper surface of the crushing box is provided at the upper end of the scraper elevator.

[0015] The soybean softening and crushing processing device disclosed in this invention first fills the hopper with soybeans during operation, and then replenishes soybeans in a timely manner whenever the soybeans in the hopper drop to a certain height during subsequent operation, so as to ensure the soybean level in the hopper.

[0016] Next, the high-temperature water mist mechanism and the negative pressure suction filtration mechanism are activated simultaneously. During operation, the negative pressure suction filtration mechanism continuously suctions from the top of the hopper, and the extracted gas is sent to the filter box for filtration. During operation, the high-temperature water mist mechanism continuously introduces high-temperature gas into the mixing pipe using a hot air blower, and under the action of a booster pump, the atomizing nozzles continuously spray atomized liquid into the spray chamber. The high-temperature gas acts on the atomized liquid, rapidly raising the water mist temperature to 60-80°C. The water mist then flows along with the high-temperature gas into a row of distribution angle boxes, and is discharged from the exhaust ports on both sides of the distribution angle boxes. The discharged high-temperature water mist, under the negative pressure at the top of the hopper, moves upwards along the gaps in the soybeans inside the hopper. During this upward and downward movement, it continuously contacts the soybeans, allowing the soybeans to fully absorb the heat and moisture from the high-temperature water mist, thus softening them to a certain extent.

[0017] As the soybeans move from the top of the hopper into the narrow feeding channel, the entire feeding process is controlled for at least 6 minutes to ensure the softening effect of the soybeans. Subsequently, the softened soybeans are evenly packed into the spiral grooves on the feeding rollers in rows. As the feeding rollers rotate downwards, the rows of soybeans in the spiral grooves fall one after another into the gap between the two crushing rollers. The shearing and compressing forces provided by the two crushing rollers, combined with the softening effect of the soybeans themselves, enable low-resistance crushing of the soybeans, preventing motor overload. Furthermore, because the soybeans fall in orderly rows, there is no jamming due to excessive batches of soybeans being fed.

[0018] Finally, after being crushed by two crushing rollers, the soybeans fall onto a perforated screen plate. The perforated screen plate then screens the crushed soybean fragments. Small fragments that meet the size requirements fall into the discharge conveyor auger for quantitative discharge, while large fragments that do not meet the size requirements are transported back to the two crushing rollers by a scraper elevator for further crushing to ensure the crushing effect of the soybeans.

[0019] Furthermore, when the control system detects a sudden increase in the current of the power motor, it indicates a jamming situation. The control system then actively controls the retraction of two hydraulic cylinders. Under the action of the hydraulic cylinders, the limiting movement of the crushing roller moves away from the other crushing roller. After the gap between the two crushing rollers widens, the jammed soybean material can be discharged smoothly. At the same time, during the process of the two crushing rollers moving away from each other, the two gears also disengage, preventing the power of the power motor from being transmitted to the limiting crushing roller. This not only stops the rotation of that crushing roller but also causes the feeding roller to stop rotating, thus halting the continued feeding of soybeans. This prevents uncrushed soybeans from passing directly through the gap during the process of feeding soybeans, and also prevents excessive soybeans above the gap from causing jamming when the two crushing rollers resume operation.

[0020] Compared with the prior art, the present invention has the following beneficial effects: The soybean softening and crushing processing device disclosed in this invention sets a high-temperature water mist mechanism at the lower end of the hopper and connects a negative pressure suction and filtration mechanism at the upper end. This allows the soybeans to be softened by a uniformly distributed high-temperature water mist from bottom to top during the feeding process, thereby reducing the hardness of the soybeans to a certain extent, reducing the resistance of the subsequent crushing rollers when crushing the soybeans, reducing the overload of the crushing roller motor, and achieving stable operation of the entire device.

[0021] This invention also changes the feeding mechanism at the bottom of the existing silo. By opening a spiral groove on the roller body of the feeding roller and controlling the width and depth of the spiral groove, soybeans can fall into the gap between the two crushing rollers in rows during the feeding process. This avoids the large operating load on the crushing rollers and the easy occurrence of material accumulation and jamming caused by the existing batch feeding of soybeans, and further ensures the stable operation of the entire device.

[0022] This invention also limits the movement of one of the two crushing rollers and links the rotation of the feeding roller to the transmission of the crushing roller. When a jam occurs, it can not only quickly control the crushing roller to move away, thereby opening the gap between the two crushing rollers and allowing the soybeans to be discharged smoothly, but also immediately cut off the power source of the feeding roller. This prevents the feeding roller from continuing to feed, which would cause uncrushed soybeans to pass directly through the gap, and also prevents the excessive amount of soybeans above the gap from causing a jam when the two crushing rollers are running again.

[0023] The present invention further includes a perforated plate to screen the crushed soybean fragments by size. Soybean fragments that do not meet the crushing size requirements can be transported again by the scraper elevator to the top of the two crushing rollers for further crushing, thereby fully ensuring the crushing effect of soybeans. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a frontal perspective view of the present invention; Figure 2 This is a three-dimensional structural diagram of the back of the present invention; Figure 3 This is a three-dimensional structural diagram of the interior of the silo in this invention; Figure 4 This is a schematic diagram of the high-temperature water mist flow inside the silo in this invention; Figure 5 This is a three-dimensional structural diagram of the feeding mechanism and the high-temperature water mist mechanism in this invention; Figure 6 This is a three-dimensional structural diagram of the crushing box, power assembly, etc. in this invention; Figure 7 This is a three-dimensional structural diagram of the inside of the crushing box in this invention; Figure 8 This is a three-dimensional structural diagram of the crushing roller, feeding mechanism, etc. in this invention. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-8 This application will be described in detail with reference to the embodiments. Example 1

[0028] Example 1 discloses a soybean softening and wetting crushing processing device, see attached drawing. Figure 1 and attached Figure 2 The main body of the device includes a frame 1 and a control system for the entire device. A hopper 2 is provided at the upper end of the frame 1, and a crushing box 3 connected to the bottom of the hopper 2 is provided at the lower end of the frame 1. A discharge conveying auger 4 is connected to the lower end of the crushing box 3, and a high-temperature water mist mechanism 5 is connected to the lower end of the hopper 2.

[0029] Reference Appendix Figure 3 and attached Figure 4 The hopper 2 is generally arranged in an inverted right-angled trapezoidal shape, wider at the top and narrower at the bottom, with a narrow discharge channel 201 connected to the lower end. A feeding slot 202 is provided at the upper part of one side of the hopper 2, and a sealing strip 203 is hinged to the feeding slot 202. An air extraction port 204 is provided at the upper part of the side of the hopper 2 opposite to the feeding slot 202. A baffle plate 205 is provided below the air extraction port 204, and a negative pressure suction and filtration mechanism 6 is connected to the outer end of the air extraction port 204. Specifically, the negative pressure suction and filtration mechanism 6 includes a filter box 601, with a negative pressure fan 602 or an air pump connected to one side of the filter box 601, and an air extraction pipe 603 connected to the other side of the filter box 601, with the end of the air extraction pipe 603 connected to the air extraction port 204. During operation, the aforementioned negative pressure suction and filtration mechanism 6 can create a negative pressure state at the upper end of the hopper 2, thereby drawing the high-temperature water mist in the discharge channel 201 upwards. This allows the high-temperature water mist to come into full contact with the soybeans piled above during its upward movement, thus promoting the soybeans to absorb moisture and heat, and softening the hardness of their own structure to a certain extent.

[0030] The high-temperature water mist mechanism 5 includes a mixing pipe 501, one end of which is connected to a hot air blower 503 via an insulated pipe 502. A spray chamber 504 is provided in the mixing pipe 501 near the end of the insulated pipe 502. An atomizing nozzle 505 is installed on the top wall of the spray chamber 504, with its lower end extending into the spray chamber 504. The top of the atomizing nozzle 505 is connected to a booster pump 506 via a water pipe. The water inlet of the booster pump 506 is connected to an external water source via a pipe. A drain hole is provided at the bottom of the mixing pipe 501 to discharge the liquefied water inside.

[0031] In addition, multiple diversion angle boxes 507 are arranged side by side in the feeding narrow channel 201, and the upper end of each diversion angle box 507 is triangular. Each diversion angle box 507 has a mist exhaust port 5071 on both sides, and the end face of each diversion angle box 507 is connected to the mixing pipe 501 via a connecting pipe 508. During operation, the high-temperature water mist mechanism 5 continuously generates high-temperature hot air of approximately 90-110°C by the hot air blower 503 and introduces it into the mixing pipe 501. Simultaneously, the booster pump 506 continuously delivers external water to the atomizing nozzle 505, and then sprays water mist into the spray chamber 504 through the atomizing nozzle 505. The sprayed water mist moves backward together after being subjected to the high-temperature hot air. Simultaneously, the water mist absorbs the temperature of the hot air, rapidly raising its own temperature to approximately 60-80°C. The mixed high-temperature water mist then enters the diversion angle box 507 through the connecting pipe 508 and exits from the mist outlets 5071 on both sides of the diversion angle box 507. At this time, soybeans moving downwards from the gap between two adjacent diversion angle boxes 507 are subjected to the high-temperature water mist. Simultaneously, the high-temperature water mist flows upwards under the negative pressure suction at the top of the hopper 2, thus ensuring full contact with the soybeans above. To guarantee the softening and humidifying effect of the high-temperature water mist on the soybeans, the time it takes for the soybeans at the top of the hopper 2 to move to the position of the diversion angle box 507 must be controlled to at least 6 minutes, thus ensuring that the hardness of the soybeans is softened to a certain extent before crushing.

[0032] Reference Appendix Figures 3-6 and appendix Figure 8 A feeding mechanism 7 is provided in the feeding chute 201 below the diversion angle box 507. Two crushing rollers 8 are symmetrically arranged in the crushing box 3 directly below the feeding mechanism 7. A power assembly 9 is provided on the outer side of the crushing box 3 to drive the two crushing rollers 8 to rotate synchronously in opposite directions.

[0033] The specific feeding mechanism 7 includes a feeding roller 701 rotatably mounted in the feeding chute 201. One end of the feeding roller 701 is connected to a feeding motor (not shown in the figure) for controlling its rotation. Multiple spiral grooves 702 extending along the axial direction are arranged in a circular array on the outer surface of the feeding roller 701. The width and depth of the spiral grooves 702 are both set between 1.4 and 1.6 times the average particle size of the soybeans, ensuring that after the feeding roller 701 rotates a certain angle, the spiral grooves 702 are filled with a row of evenly arranged soybeans. When the spiral grooves 702 filled with soybeans rotate to the bottom, they fall sequentially at their corresponding axial positions under their own gravity. Then, two crushing rollers 8 apply shearing and compressive forces to the soybeans, crushing them into appropriately sized pieces that pass through the gap between the two crushing rollers 8 and are finally discharged into the discharge conveyor auger 4. Example 2

[0034] Example 2 discloses a soybean softening and crushing processing device that is further optimized and improved based on the technical solution in Example 1. The similarities between it and Example 1 will not be described again.

[0035] Reference Appendix Figures 6-8 In this embodiment 2, one crushing roller 8 is fixedly and rotatably mounted in the crushing box 3, and sliding blocks 801 are rotatably connected to both ends of the roller shaft of the other crushing roller 8 via bearings. Limiting slots that cooperate with the sliding blocks 801 are also provided on both sides of the crushing box 3. A hydraulic cylinder 802 is then provided at the side end of the limiting slot, and the extension / retraction end of the hydraulic cylinder 802 is connected to the sliding block 801. Through the above structural design, the gap between the two crushing rollers 8 can be adjusted by controlling the extension or retraction of the hydraulic cylinder 802.

[0036] Furthermore, the power assembly 9 in this embodiment 2 includes a transmission box 901 fixed on the outer side of the crushing box 3. The transmission box 901 is equipped with a power motor 902 connected to the crushing roller 8 which is fixedly rotated. Then, gears 903 that mesh with each other are provided on the roller shafts of the two crushing rollers 8. Through the meshing between the two gears 903 and the power input of the power motor 902, the synchronous reverse rotation of the two crushing rollers 8 can be achieved.

[0037] In addition, a drive wheel is provided on the crushing roller 8 shaft connected to the sliding block 801, and the feeding motor connected to the outer end of the feeding roller 701 is changed to a driven wheel 703. A transmission belt 904 is provided between the drive wheel and the driven wheel 703. At the same time, a tension adjusting wheel 905 acting on the transmission belt 904 is provided on the outer side of the crushing box 3.

[0038] In this embodiment 2, through the above-mentioned optimized design, when the current of the power motor 902 suddenly increases during the operation of the soybean softening and crushing processing device, it indicates that a material jam has occurred. At this time, the control system of the entire device will actively control the two hydraulic cylinders 802 to retract, so that the movable crushing roller 8 can move away from the other crushing roller under the action of the hydraulic cylinders 802. Then, after the gap between the two crushing rollers 8 widens, the jammed soybean material can be discharged smoothly. At the same time, the two gears 903 will also separate, and the power of the power motor 902 cannot be transmitted to the movable crushing roller 8, so that the crushing roller 8 also stops rotating, thereby pausing the rotation of the feeding roller 701. After the feeding roller 701 stops rotating, the continued feeding of soybeans can be stopped. After the material jamming problem is resolved, the hydraulic cylinder 802 will extend and reset, so that the two crushing rollers 8 can rotate synchronously in opposite directions again to crush the soybeans, and the feeding roller 701 will also run synchronously again to feed soybeans into the crushing roller gap. Example 3

[0039] Example 3 discloses a soybean softening and crushing processing device that is further optimized and improved based on the technical solution in Example 2. The similarities between it and Example 2 will not be described again.

[0040] Reference Appendix Figure 6 and attached Figure 8 In this embodiment 2, a feed guide plate 10 is provided in the crushing box 3 above the two crushing rollers 8, and both feed guide plates 10 can guide soybeans upwards towards the gap between the two crushing rollers 8. At the same time, a downwardly inclined receiving guide plate 11 is provided in the crushing box 3 below the two crushing rollers 8, and a screen plate 12 with a reverse inclination is provided at the lower inclined end of the receiving guide plate 11, and the lower inclined end of the screen plate 12 extends out of the side of the crushing box 3. Finally, a scraper elevator 13 is provided on the side of the crushing box 3, the lower end of which is connected to the screen plate 12, and a return channel 14 connected to the upper surface of the crushing box 3 is provided at the upper end of the scraper elevator 13.

[0041] Through the above-mentioned optimized design, this embodiment 2 enables the soybeans to move into the gap between the two crushing rollers 8 for effective crushing. On the other hand, the crushed soybean fragments can be screened by the screen plate 12. Soybean fragments that meet the particle size requirements will fall into the discharge conveying auger 4 for delivery, while soybean fragments that do not pass through the screen will enter the bottom of the scraper elevator 13 and then be sent back to the top of the two crushing rollers 8 for secondary crushing, thereby ensuring the effect of soybean crushing.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A soybean softening and wetting crushing processing device, comprising a crushing box, wherein two symmetrically arranged crushing rollers are installed inside the crushing box, and a power assembly for driving the two crushing rollers is provided on the side of the crushing box, and a hopper is provided above the crushing box, characterized in that, The lower end of the hopper is provided with a narrow discharge channel that is connected to the top of the crushing box. A high-temperature water mist mechanism is provided in the discharge channel. The upper end of the hopper is connected to a negative pressure suction and filtration mechanism. The high-temperature water mist mechanism includes a mixing pipe, the end of which is connected to a hot air blower via an insulated pipe. A spray chamber is provided in the mixing pipe near the side of the insulated pipe. An atomizing nozzle is installed at the upper end of the spray chamber. The atomizing nozzle is connected to a booster pump via a water pipe. The water inlet of the booster pump is connected to an external water source. Multiple diversion angle boxes are arranged side by side in the discharge channel. The upper end of each diversion angle box is triangular in structure, and both sides of the diversion angle box are provided with mist outlets. The end face of each diversion angle box is connected to the mixing pipe via a connecting pipe. A feeding roller is rotatably installed in the feeding chute located below the diversion angle box. Multiple spiral grooves extending along the axial direction are arranged in a ring array on the outer circular surface of the feeding roller.

2. The soybean softening and wetting crushing processing device according to claim 1, characterized in that, The hopper is arranged in an inverted right-angled trapezoid with a wider top and a narrower bottom. A feeding slot is opened at the upper part of one side of the hopper, and a sealing strip is rotatably installed on the feeding slot. An air extraction port is opened at the upper part of the side of the hopper opposite to the feeding slot, and a baffle plate is installed below the air extraction port. The negative pressure suction and filtration mechanism is connected to the air extraction port.

3. The soybean softening and crushing processing device according to claim 2, characterized in that, The negative pressure suction and filtration mechanism includes a filter box, a negative pressure device connected to one side of the filter box, and an air extraction pipe connected to the other side of the filter box, with the end of the air extraction pipe connected to the air extraction port.

4. The soybean softening and wetting crushing processing device according to claim 1, characterized in that, One of the crushing rollers is fixedly installed in the crushing box, and the other crushing roller is limited to move in the crushing box. The crushing box is provided with an adjustment component for driving the limited movement of the crushing roller. The power component includes a transmission box fixed on the outer side of the crushing box. The transmission box is provided with a power motor connected to the fixed crushing roller. Both crushing rollers are provided with meshing gears on their roller shafts.

5. The soybean softening and crushing processing device according to claim 4, characterized in that, The adjustment assembly includes sliding blocks mounted on the roller shafts at both ends of the limiting movement crushing roller. The sliding blocks are connected to the roller shafts via bearings, and limiting slots that interact with the sliding blocks are provided on both sides of the crushing box. A hydraulic cylinder connected to the sliding block is fixedly mounted on the side end of the limiting slot.

6. The soybean softening and crushing processing apparatus according to claim 5, characterized in that, The outer end of the feed roller shaft is provided with a driven wheel, the crushing roller shaft which limits movement is provided with a driving wheel, and a transmission belt is provided between the driving wheel and the driven wheel. A tension adjusting wheel acting on the transmission belt is provided on the outer surface of the crushing box.

7. The soybean softening and wetting crushing processing apparatus according to claim 1 or 6, characterized in that, The width and depth of the spiral groove are both set between 1.4 and 1.6 times the average particle size of soybeans.

8. The soybean softening and wetting crushing processing device according to claim 1, characterized in that, Both crushing boxes above the two crushing rollers are equipped with feed guide plates, and both feed guide plates guide soybeans upwards towards the gap between the two crushing rollers. The crushing boxes below the two crushing rollers are equipped with downward inclined receiving guide plates, and the downward inclined end of the receiving guide plates is equipped with screen plates that are inclined in the opposite direction and extend outwards from the side of the crushing box. The bottom of the crushing box is equipped with a discharge conveying auger.

9. The soybean softening and wetting crushing processing apparatus according to claim 8, characterized in that, The side of the crushing box is equipped with a scraper elevator whose lower end is connected to the screen plate, and the upper end of the scraper elevator is equipped with a return channel that is connected to the upper surface of the crushing box.

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