Rapeseed oil leaching processing wet meal desolventizing device and method

Abstract

The invention discloses a rapeseed oil leaching processing wet meal desolventizing device and method, and relates to the technical field of wet meal desolventizing devices. Comprising a conveying shell, the conveying shell is provided with a desolventizing mechanism used for processing wet meal through rapeseed oil leaching, the desolventizing mechanism comprises a feeding assembly, the feeding assembly comprises a feeding shell fixed to the upper end of the conveying shell, and a transmission shaft is connected to the interior of the feeding shell in a penetrating mode. The pressure in the storage container is reduced through the vacuum pump, so that the boiling point of the solvent is reduced, the condensation process is accelerated, impurities in solvent steam are effectively removed through filtering of the second filter screen, it is ensured that the condensed solvent is pure and free of impurities, and the first mounting plate and the second mounting plate are connected through bolts, so that the filter cylinder is convenient to disassemble and replace, and the interior is convenient to clean; the vacuum pump is used for reducing the pressure in the storage container, the condensation process is accelerated, and the condensation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wet meal desolventizing devices, and particularly to a wet meal desolventizing device and method for rapeseed oil extraction and processing. Background Art

[0002] Rapeseed is one of the main oil crops in China, and its main processing technologies are mechanical pressing and pre-pressing extraction. During the production process of pressing rapeseed into rapeseed oil, it needs to go through processes such as cleaning, rinsing, stir-frying seeds, removing fumes, pressing, and filtering, and finally refined oil is produced. After rapeseed oil is pressed out by a press, a large amount of rapeseed meal will be produced. Rapeseed meal is a very good raw material for making organic fertilizer and high-protein feed. In the process of rapeseed oil extraction and processing, the desolventizing treatment of wet meal is a crucial link.

[0003] Reference patent (Publication No.: CN212560150U; Publication Date: February 19, 2021) relates to a rapeseed meal extraction device. The technical solution adopted is: a rapeseed meal extraction device, including a main body, in which a mixing chamber and a precipitation chamber are arranged from top to bottom. The volume of the precipitation chamber is smaller than that of the mixing chamber; a first switching valve is arranged between the mixing chamber and the precipitation chamber, and the first switching valve is used to control the on-off connection between the mixing chamber and the precipitation chamber; a liquid discharge channel is arranged on the side wall of the mixing chamber, and a filtering component and a second switching valve are arranged in sequence from inside to outside in the liquid discharge channel. Rapeseed meal precipitates in the precipitation chamber and the mixed liquid remains in the mixing chamber; the mixed solution in the mixing chamber is discharged through the liquid discharge channel. Therefore, the rapeseed oil contained in the rapeseed meal can be recovered, thereby improving the utilization rate of rapeseed and the protein content ratio of the feed containing rapeseed meal.

[0004] Based on the above patent, in the wet meal desolventizing device for rapeseed oil extraction and processing, the solvent in the wet meal obtains heat energy through heating by a desolventizing tank and vaporizes, so as to be separated from the meal. Then the raw material is directly fed into the interior of the desolventizing tank, resulting in uneven sizes of wet meal particles, affecting the contact area between the solvent and the wet meal, and further reducing the extraction efficiency. In addition, the existing desolventizing system is prone to form residues on the tank wall during the stirring process, and the residues will affect the desolventizing effect. At the same time, when collecting, the boiling point of the solvent cannot be effectively reduced, resulting in low condensation efficiency. Therefore, the present invention provides a wet meal desolventizing device and method for rapeseed oil extraction and processing.

[0005] Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a device and method for desolventizing wet meal in rapeseed oil leaching processing, which solves the problems that when the raw materials are directly fed into the desolventizing tank, the wet meal particles are of different sizes, affecting the contact area between the solvent and the wet meal, thereby reducing the leaching efficiency, and that the existing desolventizing system is prone to form residues on the tank wall during the stirring process, the residues will affect the desolventizing effect, and at the same time, the boiling point of the solvent cannot be effectively reduced during collection, resulting in low condensation efficiency.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A device for desolventizing wet meal in rapeseed oil leaching processing, including a conveying housing, on which a desolventizing mechanism for rapeseed oil leaching processing of wet meal is provided. The desolventizing mechanism includes:

[0008] A feeding component, including a feeding housing fixed at the upper end of the conveying housing. A transmission shaft penetrates through the interior of the feeding housing. A crushing shaft is fixed on the outer wall of one side of the transmission shaft inside the feeding housing. A filtering housing is slidably connected inside the feeding housing. A gear scraper connected through a reciprocating component is arranged inside the filtering housing.

[0009] A filtering component, including a desolventizing tank arranged at the discharge port of the conveying housing. A stirring component for conveying materials is arranged inside the desolventizing tank. A conduit penetrates through one side of the desolventizing tank. One end of the conduit is fixed with a filtering housing. A cleaning rod connected through a hand-cranking component is arranged inside the filtering housing.

[0010] Preferably, a driving shaft penetrates through the interior of the conveying housing. A conveying shaft is fixed on the outer wall of the driving shaft. One end of the driving shaft extending outside the conveying housing is fixed with a motor. The driving shaft and the transmission shaft are connected through a transmission wheel and a transmission belt. The crushing shaft is provided in two groups, and the two groups of crushing shafts are connected through gear transmission.

[0011] Preferably, a first filter screen is fixed on the lower end surface of the filtering housing. The filtering housing is slidably connected with the feeding housing and is connected to the feeding housing through bolts.

[0012] Preferably, the reciprocating component includes a chute opened on the inner wall of the filtering housing. A reciprocating screw is rotatably connected inside the chute. A sliding rod is slidably connected to the inner wall of the chute. The sliding rod is in threaded connection with the reciprocating screw. The gear scrapers are evenly distributed on the lower end surface of the sliding rod.

[0013] Preferably, the stirring component includes a protective housing fixed on the inner wall of the desolventizing tank. A connecting shaft penetrates through the interior of the protective housing. A first gear cone set is arranged at one end of the connecting shaft located at the center of the desolventizing tank. A vertical shaft penetrates through the lower end of the protective housing. A stirring rod is fixed on the outer wall of the vertical shaft. A scraper support is fixed at the end of the stirring rod.

[0014] Preferably, a positioning groove is formed in the inner wall of the filter housing, a filter cartridge is slidably connected inside the filter housing, a positioning rod is fixed to the outer wall of the filter cartridge, the positioning rod is slidably connected with the positioning groove, a second filter screen is fixed to one end of the inner wall of the filter cartridge, a second mounting plate is fixed to one side wall of the filter housing, a first mounting plate is attached to one side wall of the second mounting plate, the first mounting plate and the second mounting plate are connected by bolts, a hose is connected in a flowing manner to one side of the first mounting plate, one end of the hose is connected to a condenser, the output end of the condenser is connected to a storage container, and a vacuum pump is arranged on one side of the storage container.

[0015] Preferably, the hand-cranking assembly includes a movable rod vertically penetrating through the filter housing, a hand crank is fixed to the top end of the movable rod, a second bevel gear set is arranged at one end of the movable rod extending into the filter housing, a fixing plate is fixed to the inner wall of the filter housing, a transmission rod penetrates through the fixing plate, a cleaning rod is fixedly connected to one end of the transmission rod, and the other end of the transmission rod is in transmission connection with the second bevel gear set.

[0016] The present invention also discloses a method for desolventizing wet meal in rapeseed oil extraction processing, including the following steps:

[0017] Step 1: Input the wet meal through the feeding outer shell device, use the crushing shaft to crush the wet meal to make its particles uniform, and then evenly transport the crushed wet meal into the desolventizing tank through the conveying shaft.

[0018] Step 2: In the desolventizing tank, use the stirring assembly to stir the wet meal to make it fully contact with the desolventizing medium.

[0019] Step 3: Finally, the solvent vapor generated during the desolventizing process enters the filter housing through the conduit, is filtered by the filter cartridge and the second filter screen to remove impurities, then enters the condenser for condensation treatment, and finally flows into the storage container for storage.

[0020] Beneficial effects

[0021] The present invention provides a device and method for desolventizing wet meal in rapeseed oil extraction processing. Compared with the prior art, the following beneficial effects are achieved:

[0022] First, the present invention uses a condenser to cool the steam, causing it to condense into a liquid. The pressure inside the storage container is reduced by a vacuum pump, thereby lowering the boiling point of the solvent and accelerating the condensation process. Through the filtration of the second filter screen, impurities in the solvent vapor are effectively removed, ensuring that the condensed solvent is pure and free of impurities. In addition, the first mounting plate and the second mounting plate are connected by bolts, facilitating the disassembly and replacement of the filter cartridge for internal cleaning. By using a vacuum pump to reduce the pressure inside the storage container, the condensation process is accelerated, improving the condensation efficiency. Moreover, by manually rotating the hand crank to drive the movable rod, the transmission rod is connected to the movable rod through a second bevel gear set for transmission, enabling the transmission rod to rotate on the fixed plate, and thus rotating the cleaning rod at one end of the transmission rod. The cleaning rod is attached to the second filter screen to prevent blockage during filtration. Cleaning is performed by hand cranking, which is simple and convenient to operate.

[0023] Second, when the wet meal enters the desolventizing tank for desolventizing treatment after being crushed and evenly conveyed, the provided connecting shaft is driven by a motor. Then, the vertical shaft is driven by a first bevel gear set and the connecting shaft under the action of the motor to rotate on the protective housing. The crushed wet meal is stirred by the stirring rod, and a scraper bracket is fixed at the end of the stirring rod to rotate in contact with the inner wall of the desolventizing tank, which helps the solvent in the wet meal to be evenly heated and vaporized, thereby improving the desolventizing efficiency. Stirring can ensure that the solvent in the wet meal is fully exposed to the heating environment, accelerating the separation process of the solvent from the wet meal. In addition, it can scrape off the wet meal or solvent residues attached to the tank wall, preventing the residues from affecting the desolventizing effect and subsequent equipment cleaning. The rotational contact of the scraper bracket ensures the cleanliness of the inner wall of the desolventizing tank, further improving the desolventizing quality.

[0024] Third, the driving shaft and the transmission shaft rotate under the action of a motor through a transmission wheel and a transmission belt to drive the crushing shaft to rotate, so as to crush the wet meal entering the feeding housing. The crushed wet meal particles are more uniform, which helps to increase the contact area between the wet meal and the solvent, thereby improving the leaching efficiency. The more uniform crushed wet meal particles are beneficial for subsequent desolventizing treatment. Then, it falls onto the first filter screen on the filter housing for filtration to remove impurities and inadequately crushed materials in the wet meal, ensuring that the wet meal entering the desolventizing tank is pure and free of impurities, thereby improving the desolventizing effect and the quality of the meal. The inadequately crushed materials are taken out and crushed again to ensure that all wet meal can be fully crushed. During filtration, the reciprocating screw is driven by a motor, and the gear scraper slides along the chute under the action of the reciprocating screw to swing the filtered materials, enhancing the filtration effect and preventing the filter screen from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 Schematic cross-sectional structure diagram of the conveying housing of the present invention;

[0027] Figure 3 Schematic internal structure diagram of the filter housing of the present invention;

[0028] Figure 4 Schematic internal structure diagram of the desolventizing tank of the present invention;

[0029] Figure 5 Schematic installation structure diagram of the filter cartridge of the present invention;

[0030] Figure 6 Schematic internal structure diagram of the filter housing of the present invention.

[0031] In the figure: 1. Conveying housing; 101. Driving shaft; 102. Conveying shaft; 2. Feed housing; 201. Transmission shaft; 202. Crushing shaft; 3. Filter housing; 301. First filter screen; 302. Chute; 303. Reciprocating screw; 304. Slide bar; 305. Gear scraper; 4. Desolventizing tank; 401. Protective housing; 402. Connecting shaft; 403. First bevel gear set; 404. Vertical shaft; 405. Stirring rod; 406. Scraper support; 5. Duct; 6. Filter housing body; 7. Hose; 701. First mounting plate; 702. Positioning groove; 703. Filter cartridge; 704. Positioning rod; 705. Second filter screen; 706. Second mounting plate; 8. Condenser; 801. Storage container; 802. Vacuum pump; 9. Movable rod; 901. Hand crank; 902. Second bevel gear set; 903. Fixed plate; 904. Transmission rod; 905. Cleaning rod. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-6 , the present invention provides a technical solution

[0034] A wet meal desolventizing device for rapeseed oil extraction and processing, including a conveying housing 1, and a desolventizing mechanism for wet meal in rapeseed oil extraction and processing is provided on the conveying housing 1. The desolventizing mechanism includes:

[0035] The feeding assembly includes a feeding outer shell 2 fixed to the upper end of a conveying outer shell 1. A transmission shaft 201 penetrates through the inside of the feeding outer shell 2. A crushing shaft 202 is fixed to the outer wall on one side of the transmission shaft 201 inside the feeding outer shell 2. A filtering outer shell 3 is slidably connected inside the feeding outer shell 2. A gear scraper 305 connected through a reciprocating assembly is arranged inside the filtering outer shell 3;

[0036] The filtering assembly includes a desolventizing tank 4 arranged at the discharge port of the conveying outer shell 1. A stirring assembly for conveying materials is arranged inside the desolventizing tank 4. A conduit 5 penetrates through one side of the desolventizing tank 4. A cleaning rod 905 connected through a hand-cranking assembly is arranged inside a filtering housing 6 fixed to one end of the conduit 5.

[0037] In a preferred embodiment, a drive shaft 101 penetrates through the inside of the conveying outer shell 1. A conveying shaft 102 is fixed to the outer wall of the drive shaft 101. One end of the drive shaft 101 extending outside the conveying outer shell 1 is fixed with a motor. The drive shaft 101 and the transmission shaft 201 are connected through a transmission wheel and a transmission belt. The crushing shafts 202 are arranged in two groups, and the two groups of crushing shafts 202 are connected through gear transmission. The drive shaft 101 and the transmission shaft 201 rotate under the action of the motor through the transmission wheel and the transmission belt, so as to drive the crushing shafts 202 to rotate, break the wet meal entering the feeding outer shell 2, and make the broken wet meal particles more uniform, which helps to increase the contact area between the wet meal and the solvent, thereby improving the leaching efficiency. The broken wet meal particles are more uniform, which is beneficial to the subsequent desolventizing treatment. The arranged conveying shaft 102 is in a spiral structure, and then the conveying shaft 102 rotates under the action of the drive shaft 101 and the motor to convey the wet meal for rapeseed oil leaching and processing into the desolventizing tank 4 for operation, so that the wet meal can be kept stable during the conveying process and is not easy to be blocked. After the wet meal is broken and evenly conveyed, it enters the desolventizing tank 4 for desolventizing treatment. Since the wet meal particles are more uniform and the contact area with the desolventizing medium is larger, the desolventizing effect is better, which helps to reduce the residual amount of the solvent and improve the quality of the meal material.

[0038] In a preferred embodiment, a first filter screen 301 is fixed to the lower end face of the filtration housing 3. The filtration housing 3 is slidably connected to the feed housing 2 and is connected to the feed housing 2 by bolts. The reciprocating assembly includes a chute 302 formed in the inner wall of the filtration housing 3. A reciprocating screw 303 is rotatably connected inside the chute 302. A sliding rod 304 is slidably connected to the inner wall of the chute 302. The sliding rod 304 is threadedly connected to the reciprocating screw 303. Gear scrapers 305 are evenly distributed on the lower end face of the sliding rod 304. After the wet meal entering the feed housing 2 is crushed, it falls onto the first filter screen 301 on the filtration housing 3 for filtration treatment, which can remove impurities and inadequately crushed materials in the wet meal, ensuring that the wet meal entering the desolventizing tank 4 is pure and free of impurities, thereby improving the desolventizing effect and the quality of the meal. The inadequately crushed materials are taken out and crushed again to ensure that all wet meal can be fully crushed. When filtering, the reciprocating screw 303 is driven by a motor, and the gear scrapers 305 slide along the chute 302 under the action of the reciprocating screw 303 through the sliding rod 304, swinging the filtered materials, enhancing the filtering effect and preventing the filter screen from being blocked.

[0039] In a preferred embodiment, the stirring assembly includes a protective housing 401 fixed to the inner wall of the desolventizing tank 4. A connecting shaft 402 passes through the protective housing 401. At one end of the connecting shaft 402 located at the center of the desolventizing tank 4, a first bevel gear set 403 is provided. A vertical shaft 404 passes through the lower end of the protective housing 401. A stirring rod 405 is fixed to the outer wall of the vertical shaft 404. A scraper support 406 is fixed to the end of the stirring rod 405. When the wet meal enters the desolventizing tank 4 for desolventizing treatment after being crushed and evenly conveyed, the provided connecting shaft 402 is driven by a motor, and then the vertical shaft 404 is driven by the first bevel gear set 403 and the connecting shaft 402 under the action of the motor to rotate the vertical shaft 404 on the protective housing 401, stirring the crushed wet meal through the stirring rod 405. And the scraper support 406 fixed to the end of the stirring rod 405 rotates in contact with the inner wall of the desolventizing tank 4, which helps the solvent in the wet meal to be evenly heated and vaporized, thereby improving the desolventizing efficiency. Stirring can ensure that the solvent in the wet meal is fully exposed to the heating environment, accelerating the separation process of the solvent from the wet meal, and can scrape off the wet meal or solvent residues attached to the tank wall, preventing the residues from affecting the desolventizing effect and subsequent equipment cleaning. The rotational contact of the scraper support 406 ensures the cleanliness of the inner wall of the desolventizing tank 4 and further improves the desolventizing quality.

[0040] In a preferred embodiment, a positioning groove 702 is formed in the inner wall of the filtering housing 6. A filter cartridge 703 is slidably connected inside the filtering housing 6. A positioning rod 704 is fixed to the outer wall of the filter cartridge 703, and the positioning rod 704 is slidably connected to the positioning groove 702. One end of the inner wall of the filter cartridge 703 is fixed with a second filter screen 705. One side wall of the filtering housing 6 is fixed with a second mounting plate 706. A first mounting plate 701 is attached to one side wall of the second mounting plate 706. The first mounting plate 701 and the second mounting plate 706 are connected by bolts. One side of the first mounting plate 701 is connected in a flowing manner with a hose 7. One end of the hose 7 is connected to a condenser 8. The output end of the condenser 8 is connected to a storage container 801. A vacuum pump 802 is arranged on one side of the storage container 801. In the wet meal desolventizing device for rapeseed oil extraction and processing, after a series of treatments, the wet meal is desolventized in the desolventizing tank 4. During the desolventizing process, the generated solvent vapor and other gases enter the filtering housing 6 through a conduit 5 on one side of the desolventizing tank 4. Inside the filtering housing 6, the slidably connected filter cartridge 703 is slidably connected to the positioning groove 702 on the inner wall through the positioning rod 704 fixed to its outer wall. The first mounting plate 701 and the second mounting plate 706 are disassembled by bolt connection, facilitating the disassembly of the internal filter cartridge 703. The solvent vapor first passes through the second filter screen 705 at one end of the inner wall of the filter cartridge 703 for preliminary filtration to remove larger particles and impurities. Then, the vapor enters the hose 7 and is transported to the condenser 8. Inside the condenser 8, the vapor is cooled and condensed into a liquid, and finally flows into the storage container 801 for storage. In order to accelerate the condensation process and improve the condensation efficiency, a vacuum pump 802 is arranged on one side of the storage container 801.

[0041] Specifically, the condenser 8 is used to cool the vapor to condense it into a liquid. The pressure inside the storage container 801 is reduced by the vacuum pump 802, thereby reducing the boiling point of the solvent and accelerating the condensation process. Through the filtration of the second filter screen 705, impurities in the solvent vapor are effectively removed, ensuring that the condensed solvent is pure and free of impurities. In addition, the first mounting plate 701 and the second mounting plate 706 are connected by bolts, facilitating the disassembly and replacement of the filter cartridge 703 for internal cleaning. By using the vacuum pump 802 to reduce the pressure inside the storage container 801, the condensation process is accelerated and the condensation efficiency is improved.

[0042] In a preferred embodiment, the hand-cranking assembly includes a movable rod 9 vertically penetrating and connecting the filter housing 6. A hand crank 901 is fixed to the top end of the movable rod 9. At one end of the movable rod 9 extending into the filter housing 6, a second bevel gear set 902 is provided. A fixing plate 903 is fixed to the inner wall of the filter housing 6. A transmission rod 904 penetrates through the fixing plate 903. A cleaning rod 905 is fixedly connected to one end of the transmission rod 904. The other end of the transmission rod 904 is in transmission connection with the second bevel gear set 902. When filtering and removing impurities in the solvent vapor through the second filter screen 705, by manually rotating the hand crank 901 to drive the movable rod 9, the transmission rod 904 is in transmission connection with the movable rod 9 through the second bevel gear set 902, so that the transmission rod 904 rotates on the fixing plate 903, thereby rotating the cleaning rod 905 at one end of the transmission rod 904, and the cleaning rod 905 is attached to the second filter screen 705, avoiding the phenomenon of blockage during filtration. Cleaning is carried out by hand-cranking, and the operation is simple and convenient.

[0043] The motor model is YB2-132S-4H, and the motor model is M20.

[0044] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0045] The present invention also discloses a method for desolventizing wet meal in rapeseed oil extraction processing, including the following steps:

[0046] Step 1: Input the wet meal through the feeding outer shell 2 of the device. Use the crushing shaft 202 to crush the wet meal to make its particles uniform. Then, evenly transport the crushed wet meal into the stripping tank 4 through the conveying shaft 102. Specifically, the driving shaft 101 and the transmission shaft 201 rotate under the action of the motor through the transmission wheels and belts to drive the crushing shaft 202 to rotate, so as to crush the wet meal entering the feeding outer shell 2. The crushed wet meal has more uniform particles, which helps to increase the contact area between the wet meal and the solvent, thereby improving the leaching efficiency. The more uniform particles of the crushed wet meal are beneficial to the subsequent stripping treatment. The set conveying shaft 102 is in a spiral structure, and then the conveying shaft 102 rotates under the action of the driving shaft 101 driven by the motor to transport the wet meal for rapeseed oil leaching and processing into the interior of the stripping tank 4 for work, so that the wet meal can remain stable during transportation and is not easily blocked. After the wet meal is crushed and evenly transported, it enters the stripping tank 4 for stripping treatment. After the wet meal entering the feeding outer shell 2 is crushed, it falls onto the first filter screen 301 on the filter outer shell 3 for filtering treatment, which can remove impurities and insufficiently crushed materials in the wet meal, ensure that the wet meal entering the stripping tank 4 is pure and free of impurities, thereby improving the stripping effect and the quality of the meal material. The insufficiently crushed materials are taken out and crushed again to ensure that all wet meal can be fully crushed. When filtering, the reciprocating screw 303 is driven by the motor, and the gear scraper 305 slides along the chute 302 under the action of the reciprocating screw 303 to swing the filtered materials, enhancing the filtering effect and preventing the filter screen from being blocked.

[0047] Step 2: In the stripping tank 4, use the stirring assembly to stir the wet meal to make it fully contact with the stripping medium. Specifically, after the wet meal is crushed and evenly transported and enters the stripping tank 4 for stripping treatment, the set connecting shaft 402 is driven by the motor, and then the vertical shaft 404 is driven by the first gear cone set 403 and the connecting shaft 402 under the action of the motor to realize the rotation of the vertical shaft 404 on the protective outer shell 401, and stir the crushed wet meal through the stirring rod 405. The end of the stirring rod 405 is fixed with a scraper support 406 to rotate in contact with the inner wall of the stripping tank 4, which helps the solvent in the wet meal to be evenly heated and vaporized, thereby improving the stripping efficiency. Stirring can ensure that the solvent in the wet meal is fully exposed to the heating environment, accelerating the separation process of the solvent from the wet meal, and can scrape off the wet meal or solvent residues attached to the tank wall, preventing the residues from affecting the stripping effect and subsequent equipment cleaning. The fitting rotation of the scraper support 406 ensures the cleanliness of the inner wall of the stripping tank 4 and further improves the stripping quality.

[0048] Step 3. Finally, the solvent vapor generated during the desolventization process enters the filter housing 6 through the conduit 5, is filtered by the filter cartridge 703 and the second filter screen 705 to remove impurities, then enters the condenser 8 for condensation treatment, and finally flows into the storage container 801 for storage. Specifically, in the wet meal desolventization device for rapeseed oil extraction and processing, the wet meal undergoes a series of treatments and then undergoes desolventization in the desolventization tank 4. During the desolventization process, the generated solvent vapor and other gases enter the filter housing 6 through the conduit 5 on one side of the desolventization tank 4. Inside the filter housing 6, the slidably connected filter cartridge 703 is slidably connected to the positioning groove 702 on the inner wall through the positioning rod 704 fixed to its outer wall, and is disassembled by bolt connection through the first mounting plate 701 and the second mounting plate 706, facilitating the disassembly of the internal filter cartridge 703. The solvent vapor first passes through the second filter screen 705 at one end of the inner wall of the filter cartridge 703 for preliminary filtration to remove larger particles and impurities. Then, the vapor enters the hose 7 and is transported to the condenser 8. Inside the condenser 8, the vapor is cooled and condensed into a liquid, and finally flows into the storage container 801 for storage. To accelerate the condensation process and improve the condensation efficiency, a vacuum pump 802 is provided on one side of the storage container 801.

[0049] During operation, first, the drive shaft 101 and the transmission shaft 201 rotate under the action of the motor through the transmission wheel and the transmission belt, driving the crushing shaft 202 to rotate to crush the wet meal entering the feed housing 2. The crushed wet meal particles are more uniform, which is beneficial for subsequent desolventization treatment. Then, the provided conveying shaft 102 has a spiral structure, and the conveying shaft 102 rotates under the action of the drive shaft 101 and the motor to convey the rapeseed oil extraction and processing wet meal entering it to the inside of the desolventization tank 4 for operation. At the same time, after the wet meal entering the feed housing 2 is crushed, it falls onto the first filter screen 301 on the filter housing 3 for filtration treatment, which can remove impurities and inadequately crushed materials in the wet meal, ensuring that the wet meal entering the desolventization tank 4 is pure and free of impurities, thereby improving the desolventization effect and the quality of the meal. The inadequately crushed materials are taken out and crushed again to ensure that all wet meal can be fully crushed. And during filtration, the reciprocating screw 303 is driven by the motor, and the gear scraper 305 slides along the chute 302 under the action of the reciprocating screw 303 to swing the filtered materials, enhancing the filtration effect and preventing the filter screen from being blocked;

[0050] When the wet meal enters the desolventizing tank 4 for desolventizing treatment after being crushed and evenly conveyed, the provided connecting shaft 402 is driven by a motor, and then the vertical shaft 404 is driven by the first bevel gear set 403 and the connecting shaft 402 under the action of the motor to rotate the vertical shaft 404 on the protective housing 401. The crushed wet meal is stirred by the stirring rod 405, and a scraper support 406 is fixed at the end of the stirring rod 405 to rotate in contact with the inner wall of the desolventizing tank 4, which helps the solvent in the wet meal to be evenly heated and vaporized, thereby improving the desolventizing efficiency.

[0051] Finally, in the wet meal desolventizing device for rapeseed oil extraction, the wet meal undergoes desolventizing in the desolventizing tank 4 after a series of treatments. During the desolventizing process, the generated solvent vapor and other gases enter the filter housing 6 through the conduit 5 on one side of the desolventizing tank 4. Inside the filter housing 6, the slidably connected filter cartridge 703 is slidably connected to the positioning groove 702 on the inner wall through the positioning rod 704 fixed to its outer wall, and can be disassembled by bolt connection through the first mounting plate 701 and the second mounting plate 706, facilitating the disassembly of the internal filter cartridge 703. The solvent vapor first passes through the second filter screen 705 at one end of the inner wall of the filter cartridge 703 for preliminary filtration to remove larger particles and impurities. Then, the vapor enters the hose 7 and is transported to the condenser 8. Inside the condenser 8, the vapor is cooled and condensed into a liquid, which finally flows into the storage container 801 for storage. To accelerate the condensation process and improve the condensation efficiency, a vacuum pump 802 is provided on one side of the storage container 801.

[0052] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0053] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapeseed oil extraction and processing wet meal desolventizing device, comprising a conveying housing (1), characterized in that: The conveying housing (1) is provided with a desolventizing mechanism for extracting rapeseed oil from wet meal, and the desolventizing mechanism comprises: A feed assembly comprises a feed housing (2) fixed at the upper end of a conveying housing (1), a transmission shaft (201) penetrating the interior of the feed housing (2), a crushing shaft (202) being fixed to an outer wall of one side of the interior of the feed housing (2), a filter housing (3) being slidably connected to the interior of the feed housing (2), and a gear scraper (305) connected via a reciprocating assembly being arranged inside the filter housing (3); The filtering component comprises a desolventizing tank (4) provided at the discharge port of a conveying shell (1), a stirring component for conveying materials provided inside the desolventizing tank (4), a conduit (5) passing through one side of the desolventizing tank (4), a filtering shell (6) being fixed at one end of the conduit (5), and a cleaning rod (905) connected via a hand-cranked component provided inside the filtering shell (6).

2. A rapeseed oil extraction and processing wet meal desolventizing device according to claim 1, characterized in that: A driving shaft (101) is connected to the inside of the conveying shell (1), a conveying shaft (102) is fixed to the outer wall of the driving shaft (101), a motor is fixed to one end of the driving shaft (101) extending to the outside of the conveying shell (1), the driving shaft (101) and the transmission shaft (201) are connected via a transmission wheel and a transmission belt, and the crushing shaft (202) is arranged in two groups, and the two groups of crushing shafts (202) are connected via gear transmission.

3. A rapeseed oil extraction and processing wet meal desolventizing device according to claim 1, characterized in that: A first filter screen (301) is fixed to the lower end surface of the filter housing (3), and the filter housing (3) is slidably connected to the feed housing (2), and the filter housing (3) is connected to the feed housing (2) via bolts.

4. A rapeseed oil extraction and processing wet meal desolventizing device according to claim 1, characterized in that: The reciprocating assembly comprises a slide groove (302) provided on the inner wall of the filter housing (3); a reciprocating screw (303) is rotatably connected inside the slide groove (302); a slide rod (304) is slidably connected to the inner wall of the slide groove (302); the slide rod (304) is threadedly connected to the reciprocating screw (303); and the gear scrapers (305) are evenly distributed on the lower end surface of the slide rod (304).

5. A rapeseed oil extraction and processing wet meal desolventizing device according to claim 1, characterized in that: The stirring assembly comprises a protective shell (401) fixed to the inner wall of the desolventizing tank (4), a connecting shaft (402) is connected through the interior of the protective shell (401), a first gear cone group (403) is arranged at one end of the connecting shaft (402) located at the center of the desolventizing tank (4), a vertical shaft (404) is connected through the lower end of the protective shell (401), a stirring rod (405) is fixed to the outer wall of the vertical shaft (404), and a scraper bracket (406) is fixed to the end of the stirring rod (405).

6. A rapeseed oil extraction and processing wet meal desolventizing device according to claim 1, characterized in that: The inner wall of the filter housing (6) is provided with a positioning groove (702), the interior of the filter housing (6) is slidably connected with a filter cartridge (703), the outer wall of the filter cartridge (703) is fixed with a positioning rod (704), the positioning rod (704) is slidably connected to the positioning groove (702), one end of the inner wall of the filter cartridge (703) is fixed with a second filter screen (705), a side wall of the filter housing (6) is fixed with a second mounting plate (706), a side wall of the second mounting plate (706) is attached with a first mounting plate (701), the first mounting plate (701) and the second mounting plate (706) are connected by bolts, one side of the first mounting plate (701) is connected with a hose (7), one end of the hose (7) is connected with a condenser (8), the output end of the condenser (8) is connected with a storage container (801), and a vacuum pump (802) is arranged on one side of the storage container (801).

7. A rapeseed oil extraction and processing wet meal desolventizing device according to claim 1, characterized in that: The hand crank assembly comprises a movable rod (9) vertically connected to the filter housing (6); a hand crank rod (901) is fixed to the top of the movable rod (9); one end of the movable rod (9) extending into the interior of the filter housing (6) is provided with a second gear cone group (902); a fixing plate (903) is fixed to the inner wall of the filter housing (6); a transmission rod (904) is connected to the interior of the fixing plate (903); the cleaning rod (905) is fixedly connected to one end of the transmission rod (904); and the other end of the transmission rod (904) is transmission-connected to the second gear cone group (902).

8. A method for desolventizing wet meal in rapeseed oil extraction processing, using a rapeseed oil extraction processing wet meal desolventizing device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: The wet meal is fed into the device through the feed housing (2), and the wet meal is crushed by the crushing shaft (202) to make the particles uniform. The crushed wet meal is then uniformly conveyed to the desolventizing tank (4) by the conveying shaft (102). Step 2: In the desolventizing tank (4), the wet meal is stirred by using a stirring assembly so that it is in full contact with the desolventizing medium. Step 3. Finally, the solvent vapor generated during the desolventizing process enters the filter housing (6) through the conduit (5), is filtered through the filter cartridge (703) and the second filter screen (705) to remove impurities, then enters the condenser (8) for condensation, and finally flows into the storage container (801) for storage.

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