Centrifugal separation device and separation method for removing broken shells from egg liquid for extracting egg protein

Abstract

The present invention relates to the technical field of egg liquid centrifugation, and in particular to an egg liquid egg protein extraction and egg shell removal centrifugal separation device and separation method, comprising a centrifugal unit; a filter shell is arranged at the lower part of the centrifugal unit, a filter screen is rotatably arranged in the filter shell, the filter screen is an annular structure, the filter shell is vertically separated into an upper cavity and a lower cavity from top to bottom, the broken shells are intercepted by the filter screen and remain in the upper cavity, the protein filtered by the filter screen flows into the lower cavity, a first driving unit for driving the filter screen to rotate around the filter screen axis is arranged at one end of the filter screen, an exhaust unit is arranged in the lower cavity, the exhaust unit extracts the air in the lower cavity, the air in the filter shell flows from top to bottom in the vertical direction, and the flowing air extracts the protein falling on the filter screen. The present invention ensures that the protein remaining in the broken shells can be separated smoothly, and reduces the protein loss when separating the broken shells in the protein.

Description

Technical Field

[0001] The invention relates to the technical field of egg liquid centrifugation, in particular to an egg liquid shell-removing centrifugal separation device and a separation method for extracting egg protein. Background Art

[0002] In the existing equipment, when separating the egg liquid, the steps adopted are to first put the washed eggs into the interior of the equipment, and then start the equipment and drive the eggs to rotate to break the eggs. However, this will cause a large amount of broken eggshells to be in the egg liquid. In the process of rotation, the broken eggshells will further shrink, and the smaller broken eggshells will pass through the filter holes of the equipment, resulting in a poor separation effect of the egg liquid and the eggshells.

[0003] Chinese patent application CN116548542A discloses an egg liquid centrifugal separation device, comprising a separation box, and an egg tray inlet and an egg shell outlet opened on both sides of the separation box, a centrifugal separation mechanism for separating the egg liquid is provided at the lower part of the separation box cavity, and a shell breaking mechanism for breaking the egg shells is provided at the upper part of the separation box cavity; the shell breaking mechanism comprises a placement box rotatably mounted in the separation box, and a placement cavity for placing the egg tray is provided inside the placement box, and a fixing component for fixing the eggs is provided in the placement cavity, a conveying box is provided in the separation box, and a fixing component for fixing the eggs is provided in the conveying box. The second egg fixing component is an operating box provided in the separation box and below the conveying box. The conveying box and the placement box are both provided with placement holes for holding eggs, and the placement holes have a diameter larger than the diameter of regular eggs. The operating box is provided with flow holes corresponding one to one with the placement holes. A cracking component for breaking the egg shells is provided inside the operating box. A rotating gear fixed coaxially with the placement box is provided in the separation box. A rotating rack is engaged with one side of the rotating gear, and one end of the rotating rack is transmission-connected to the cracking component. A driving component for driving the cracking component and the conveying box to move is provided on one side of the separation box.

[0004] The above scheme can break up and remove the egg shells, avoiding the subsequent generation of a large number of small egg shell fragments during the centrifugation process. However, the centrifugal device in the above scheme needs to centrifuge the egg liquid in the centrifugal net cylinder through the centrifugal impeller. In this way, the egg liquid can only pass through the centrifugal net cylinder when the centrifugal impeller rotates at a high speed. The egg liquid after passing through the centrifugal net cylinder will flow back into the centrifugal net cylinder again, which reduces the centrifugal effect in the centrifugal net cylinder. The egg liquid at the bottom of the centrifugal net cylinder cannot be discharged smoothly, and the egg liquid is prone to accumulation. The egg liquid cannot be stored for a long time and will inevitably rot after a few days of accumulation, thus causing food contamination. Summary of the Invention

[0005] In response to the above problems, a centrifugal separation device and separation method for egg protein extraction from egg liquid to remove broken shells are provided. When the centrifugal unit is in operation, the first drive unit and the exhaust unit are also in operation. When the broken shells fall on the filter screen, the exhaust unit extracts the air in the lower cavity, so that a negative pressure is formed in the lower cavity, and the air in the upper cavity passes through the filter screen and is replenished into the lower cavity, so that the air in the filter housing can move from top to bottom in the vertical direction. The purpose of allowing the air in the filter housing to move from top to bottom in the vertical direction is because the broken shells that fall on the filter screen will still be mixed with some protein. If the broken shells mixed with protein are directly discharged during centrifugal unit centrifugation, unnecessary material loss will result. After the exhaust unit is provided in the lower cavity, the broken shells that fall on the filter screen can be intercepted by the filter screen, and under the action of the air flow, the protein remaining on the broken shells can pass through the filter screen and flow into the lower cavity. The purpose of driving the filter screen to rotate by the first drive unit is to allow the protein located on the upper part of the filter screen to be removed. The filter screen is driven to rotate by the first driving unit, and the rotating filter screen can timely drive the broken shells fallen on it to rotate, so that the broken shells can fall into the collecting unit, ensuring that the broken shells will not accumulate on the upper part of the filter screen, thereby ensuring that the protein remaining in the broken shells can be smoothly separated, and reducing the protein loss when separating the broken shells in the protein.

[0006] In order to solve the problems of the prior art, the present invention provides a centrifugal separation device for egg liquid and broken shell removal for extracting egg protein, comprising a centrifugal unit; a filter shell is provided at the lower part of the centrifugal unit, a filter screen is rotatably provided in the filter shell, the filter screen is an annular structure, the filter shell is vertically divided into an upper cavity and a lower cavity from top to bottom, the broken shells are intercepted by the filter screen and remain in the upper cavity, the protein filtered by the filter screen flows into the lower cavity, a first driving unit for driving the filter screen to rotate around the axis of the filter screen is provided at one end of the filter screen, an exhaust unit is provided in the lower cavity, the exhaust unit extracts air from the lower cavity, the air in the filter shell flows vertically from top to bottom, the flowing air extracts the protein falling on the filter screen, the protein passes through the upper part and the lower part of the filter screen in turn along the vertical direction, and finally enters the lower cavity and is discharged.

[0007] Preferably, a collection unit is provided on one side of the upper cavity, the collection unit includes a collection cavity, the collection cavity is located on one side of the upper cavity and is connected to the upper cavity, and a collection box is provided at the bottom of the collection cavity for sliding horizontally, and the collection box is used to collect broken shells.

[0008] Preferably, a cleaning roller is rotatably provided at the connection between the upper cavity and the collecting cavity, the axis of the cleaning roller is parallel to the axis of the filter screen, and the cleaning roller contacts the periphery of the filter screen, the rotation direction of the cleaning roller is opposite to the rotation direction of the filter screen, and the first driving unit can drive the cleaning roller and the filter screen to rotate at the same time.

[0009] Preferably, a drainage unit is provided at the lower part of the lower cavity, and the drainage unit includes a pre-storage tube connected to the lower cavity. The pre-storage tube is vertically arranged, and valve bodies are respectively provided at the upper and lower parts of the pre-storage tube. One of the two valve bodies is opened, and before one valve body is opened, the other valve body is already in a closed state.

[0010] Preferably, a cleaning unit is provided at one end of the filter screen, and the cleaning unit includes a cleaning frame that slides along the axial direction of the filter screen. The cleaning frame is a radial structure, and an extension rod is slidably provided on the cleaning frame along the radial direction of the cleaning frame. A cleaning brush is fixedly provided on the inner ring end of the extension rod facing the filter screen, and a pushing unit for driving the extension rod to move is provided on the cleaning frame.

[0011] Preferably, a moving unit is provided at the end of the cleaning frame for driving the cleaning frame to move along the axis of the filter screen, and a second driving unit is also provided at the end of the cleaning frame for driving the cleaning frame to rotate around the axis of the filter screen. During cleaning, the filter screen is in a continuous rotation state, and the moving unit pulls the cleaning frame into the inner ring of the filter screen, and then the extension rod drives the cleaning brush to extend and contact the inner wall of the filter screen. The second driving unit drives the cleaning frame to rotate, and the rotation direction of the cleaning frame is opposite to the rotation direction of the filter screen.

[0012] Preferably, a storage box for storing the filter rack is provided on one side of the filter shell, and a storage slot is provided in the storage box, the storage slot is slidably matched with the cleaning rack, the blocking rack is rotatably arranged at the end of the cleaning rack, and the blocking rack is slidably matched with the storage slot along the moving direction of the cleaning rack, and the blocking rack is rotatably matched with the cleaning rack when the cleaning rack is located in the inner ring of the filter net, and the rotation of the cleaning rack is an integer at this time.

[0013] Preferably, the exhaust unit includes an exhaust trough connected to the lower cavity, the bottom of the exhaust trough is an inclined structure, and the exhaust trough is inclined downward toward the lower cavity, and the exhaust fan is arranged at the upper part of the exhaust trough, and the exhaust fan draws out the air in the lower cavity through the exhaust trough.

[0014] Preferably, the centrifugal unit includes a centrifugal barrel, a scraping plate and a casing. The centrifugal barrel is arranged vertically and the upper opening of the centrifugal barrel is larger than the lower opening. The casing is arranged on the outer periphery of the centrifugal barrel. There is an annular cavity between the casing and the centrifugal barrel. The centrifugal barrel throws the protein into the annular cavity. A scraping plate is fixedly provided on the side wall of the casing. The scraping plate is always in contact with the side wall and bottom of the annular cavity. A discharge port is provided at the bottom of the annular cavity.

[0015] The present invention also relates to a centrifugal separation method for removing broken shells from egg liquid for extracting egg protein, which uses a centrifugal separation device for removing broken shells from egg liquid for extracting egg protein. The specific steps are as follows:

[0016] S1, the centrifugal unit centrifuges the protein part in the egg liquid, the protein part in the egg liquid is centrifuged and thrown out, and the broken shells in the protein are discharged into the filter housing by the centrifugal unit. The broken shells entering the filter housing fall on the upper part of the filter screen, i.e., the upper cavity of the filter housing.

[0017] S2. The exhaust unit drives the air in the filter housing to move vertically from top to bottom. The flowing air sucks out the protein attached to the crushed shells and discharges it into the lower cavity through the filter screen. A collection unit is provided on one side of the upper cavity. The first driving unit operates synchronously when the exhaust unit is working. The first driving unit drives the filter screen to rotate toward the collection unit, and the filter screen drops the crushed shells attached to its upper part into the collection unit.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The filter screen is driven by the first driving unit to rotate, so that the crushed shells on the upper part of the filter screen can be discharged in time, that is, the crushed shells on the upper part of the filter screen are discharged in time, that is, the crushed shells on the upper part of the filter screen are discharged in time, that is, the crushed shells on the upper part of the filter screen are discharged in time. The filter screen is driven to rotate by the first driving unit, and the rotating filter screen can timely drive the crushed shells fallen on it to rotate, so that the crushed shells can fall into the collecting unit, ensuring that the crushed shells will not accumulate on the upper part of the filter screen, thereby ensuring that the protein remaining in the crushed shells can be smoothly separated, and reducing the protein loss when separating the crushed shells in the protein. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of a centrifugal separation device for extracting egg protein and removing broken shells from egg liquid Figure 1 .

[0021] Figure 2 It is a centrifugal separation device for egg protein extraction and egg liquid removal. Figure 1 A local enlarged schematic diagram of point A in the middle.

[0022] Figure 3 A three-dimensional diagram of a centrifugal separation device for extracting egg protein and removing broken shells from egg liquid Figure 2 .

[0023] Figure 4 The invention discloses a side view of a centrifugal separation device for removing broken shells from egg liquid for extracting egg white.

[0024] Figure 5It is a centrifugal separation device for egg protein extraction and egg liquid removal. Figure 4 Schematic cross-sectional view at the middle BB.

[0025] Figure 6 It is a centrifugal separation device for egg protein extraction and egg liquid removal. Figure 5 A partial enlarged schematic diagram of point C in the middle.

[0026] Figure 7 A cutaway perspective diagram of a centrifugal separation device for egg protein extraction and egg liquid shell removal Figure 1 .

[0027] Figure 8 A cutaway perspective diagram of a centrifugal separation device for egg protein extraction and egg liquid shell removal Figure 2 .

[0028] Figure 9 It is a centrifugal separation device for egg protein extraction and egg liquid removal. Figure 8 A local enlarged schematic diagram of point D in the middle.

[0029] Figure 10 A cutaway perspective diagram of a centrifugal separation device for egg protein extraction and egg liquid shell removal Figure 3 .

[0030] The numbers in the figure are:

[0031] 1. Centrifugal unit; 11. Centrifugal bucket; 12. Scraper; 13. Housing; 14. Third drive unit; 2. Filter housing; 21. Filter screen; 22. Upper chamber; 23. Lower chamber; 24. Collection unit; 241. Collection chamber; 242. Collection box; 243. Cleaning roller; 25. Drain unit; 251. Pre-storage tube; 252. Valve body; 26. Cleaning unit; 261. Cleaning rack; 262. Extension rod; 263. Cleaning brush; 264. Push-out unit; 2641. Spring; 2642. Pump body ; 265. Second drive unit; 2651. Second rotary drive; 2652. Second gear ring; 2653. Second gear; 266. Moving unit; 2661. Moving frame; 2662. Guide rod; 2663. Threaded rod; 2664. Third rotary drive; 267. Storage box; 2671. Storage slot; 268. Blocking rack; 3. First drive unit; 31. First rotary drive; 32. First gear; 33. First gear ring; 4. Exhaust unit; 41. Exhaust fan; 42. Exhaust slot. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figure 1 and Figure 5 The egg white is filtered by the filter mesh 21 and then filtered by the filter mesh 21. The egg white is filtered by the filter mesh 21 and then flows into the lower cavity 23. The egg white is filtered by the filter mesh 21 and then flows into the lower cavity 23. The egg white is filtered by the filter mesh 21 and then flows into the lower cavity 23. The egg white is filtered by the filter mesh 21 and then flows into the lower cavity 23.

[0034] In the prior art, there are already automatic shell-opening devices and devices for separating egg yolks and egg whites. The general steps are as follows: the automatic shell-opening device can imitate the manual shell-opening method to open the egg shell, and then the egg yolk and egg white are separated by the egg yolk and egg white separation device. When separating the egg yolk and egg white, multiple horizontally arranged cross bars are often used, and the gaps between adjacent cross bars are the same. After the egg is opened, the mixture of egg yolk and egg white is put into the egg yolk and egg white separation device, the egg yolk is intercepted by the cross bars, and the egg white passes through the gaps between the cross bars, and then the egg white can be put into the centrifugal unit 1. The centrifugal unit 1 includes a centrifugal bucket 11. The upper opening of the centrifugal bucket 11 is larger than the lower opening, and the centrifugal bucket 11 is evenly distributed with filter holes. The centrifugal bucket 11 separates the egg white. During centrifugal separation, it is in a continuous rotation state, that is, the centrifugal bucket 11 rotates around its own axis, and the protein falling on the inner wall of the centrifugal bucket 11 is thrown out under the action of centrifugal force, and the broken shells mixed in the protein will also be intercepted and gradually slide to the lower opening of the centrifugal bucket 11 under the action of gravity and finally discharged. When the broken shells are discharged from the bottom of the centrifugal bucket 11, the broken shells fall on the filter screen 21 in the filter shell 2. The subsequent specific filtration steps are as follows: when the centrifugal unit 1 is in the running state, the first drive unit 3 and the exhaust unit 4 are also in the running state. When the broken shells fall on the filter screen 21, the exhaust unit 4 extracts the air in the lower cavity 23, so that a negative pressure is formed in the lower cavity 23, and the air in the upper cavity 22 passes through the filter screen 21 and is replenished into the lower cavity 2 3, so that the air in the filter housing 2 can move from top to bottom in the vertical direction. The purpose of making the air in the filter housing 2 move from top to bottom in the vertical direction is that the crushed shells falling on the filter screen 21 will still be mixed with some protein. If the crushed shells mixed with protein are directly discharged when the centrifugal unit 1 is centrifuged, it will cause unnecessary material loss. After the exhaust unit 4 is set in the lower cavity 23, the crushed shells falling on the filter screen 21 can be intercepted by the filter screen 21, and under the action of the air flow, the protein remaining on the crushed shells can pass through the filter screen 21 and flow into the lower cavity 23. The purpose of driving the filter screen 21 to rotate by the first driving unit 3 is to enable the crushed shells located on the upper part of the filter screen 21 to be discharged in time, that is, in the upper cavity A collecting unit 24 is provided on one side of 22, and the collecting unit 24 is used to collect the broken shells in the upper cavity 22. When the first driving unit 3 drives the filter screen 21 to rotate toward the collecting unit 24, the upper part of the filter screen 21 can be continuously switched. On the contrary, if the filter screen 21 cannot rotate, the broken shells falling from the centrifugal unit 1 will gradually accumulate on the upper part of the filter screen 21, and as the broken shells continue to accumulate, the broken shells will block the upper part of the filter screen 21. In this way, the resistance encountered by the exhaust unit 4 during operation is relatively large, which not only makes it difficult to extract the protein attached to the broken shells, but also affects the normal operation of the exhaust unit 4 due to the increase in resistance, which may lead to damage to the exhaust unit 4. In this way, the filter screen 21 is driven to rotate by the first driving unit 3.The rotating filter 21 can promptly rotate the crushed shells that fall on it, so that the crushed shells can fall into the collection unit 24, ensuring that the crushed shells will not accumulate on the top of the filter 21, thereby ensuring that the protein remaining in the crushed shells can be separated smoothly, reducing the protein loss when separating the crushed shells from the protein.

[0035] Reference Figure 5 and Figure 7 : A collecting unit 24 is provided on one side of the upper cavity 22, and the collecting unit 24 includes a collecting cavity 241. The collecting cavity 241 is located on one side of the upper cavity 22 and is connected to the upper cavity 22. A collecting box 242 is provided at the bottom of the collecting cavity 241 for sliding in a horizontal direction. The collecting box 242 is used to collect broken shells.

[0036] After the crushed shells fall on the upper part of the filter screen 21, the protein mixed with the crushed shells passes through the filter screen 21 under the dual action of its own gravity and the exhaust unit 4, and gradually falls into the lower cavity 23 in the vertical direction. The protein passes through the filter screen 21 from the upper part of the filter screen 21 and enters the inside of the filter screen 21, and then passes out from the lower part of the filter screen 21 into the lower cavity 23. At this time, the filter screen 21 is continuously rotated under the drive of the first driving unit 3, and the filter screen 21 carries the crushed shells attached to its upper part. The crushed shells are moved toward the collection chamber 241 by the rotation of the filter screen 21. When the crushed shells are driven to one side of the collection chamber 241 by the filter screen 21, the crushed shells attached to the filter screen 21 are scooped up by the side of the collection chamber 241 and discharged into the collection box 242. It is worth noting that the collection box 242 slides into the collection chamber 241 horizontally. In this way, the collection shell can be pulled out after a period of use, and the crushed shells in the collection box 242 can be cleaned and reinserted into the collection chamber 241.

[0037] Reference Figure 7 : A cleaning roller 243 is rotatably provided at the connection between the upper cavity 22 and the collecting cavity 241. The axis of the cleaning roller 243 is parallel to the axis of the filter screen 21, and the cleaning roller 243 contacts the periphery of the filter screen 21. The rotation direction of the cleaning roller 243 is opposite to the rotation direction of the filter screen 21. The first driving unit 3 can simultaneously drive the cleaning roller 243 and the filter screen 21 to rotate.

[0038] The first driving unit 3 includes a first rotation driver 31, a first gear 32 and a first gear ring 33. The first gear ring 33 is fixedly arranged at the end of the filter screen 21, and the first gear 32 is fixedly arranged at the end of the cleaning roller 243. The first gear 32 and the first gear ring 33 are engaged with each other. The first rotation driver 31 is arranged at the end of the first gear 32. The first rotation driver 31 is used to drive the first gear 32 to rotate. The first rotation driver 31 is preferably a servo motor. When the first rotation driver 31 is started, the first rotation driver 31 can drive the first gear 32, thereby rotating the first gear ring 33. In this way, the cleaning roller 243 and the filter screen 21 can rotate synchronously, and the rotation direction of the cleaning roller 243 is opposite to the rotation direction of the filter screen 21. The cleaning roller 243 can move debris on the filter screen 21 into the collection chamber 241.

[0039] Reference Figure 3 、 Figure 4 、 Figure 7 and Figure 8 : A drainage unit 25 is provided at the lower part of the lower cavity 23, and the drainage unit 25 includes a pre-storage tube 251 connected to the lower cavity 23. The pre-storage tube 251 is vertically arranged, and valve bodies 252 are respectively provided at the upper and lower parts of the pre-storage tube 251. One of the two valve bodies 252 is opened, and before one valve body 252 is opened, the other valve body 252 is already in a closed state.

[0040] When the exhaust unit 4 is in operation, the protein flowing into the lower cavity 23 through the filter 21 will be received by the drain unit 25. When the drain unit 25 is in the receiving state, the valve body 252 provided on the upper part of the pre-storage tube 251 is opened, while the valve body 252 located at the lower part of the pre-storage tube 251 is in the closed state, so that the protein falling into the lower cavity 23 flows into the pre-storage tube 251. After the exhaust unit 4 has been running for a period of time, in actual production, the rated opening time of the valve body 252 can be determined according to the actual production situation, that is, when the valve body 252 is opened, the protein flowing into the lower cavity 23 flows into the pre-storage tube 251. After the rated opening time is reached, the upper valve body 252 of the pre-storage tube 251 is closed, and the lower valve body 252 of the pre-storage tube 251 is opened, so that the protein in the pre-storage tube 251 can be discharged smoothly. After the protein in the pre-storage tube 251 is discharged, the valve body 252 at the lower part of the pre-storage tube 251 is closed again, and the valve body 252 at the upper part of the pre-storage tube 251 is opened again. In this way, when the discharge unit 25 discharges the protein, the negative pressure state in the lower cavity 23 can be ensured, so that the air in the filter housing 2 can always flow from top to bottom in the vertical direction.

[0041] Reference Figure 5-Figure 9: A cleaning unit 26 is provided at one end of the filter 21, and the cleaning unit 26 includes a cleaning frame 261 that slides along the axial direction of the filter 21. The cleaning frame 261 is a radial structure, and an extension rod 262 is slidably provided on the cleaning frame 261 along the radial direction of the cleaning frame 261. A cleaning brush 263 is fixedly provided on the inner ring end of the extension rod 262 toward the filter 21, and a pushing unit 264 for driving the extension rod 262 to move is provided on the cleaning frame 261.

[0042] The pushing unit 264 includes a spring 2641 and a pump body 2642. The spring 2641 is arranged at the end of the extension rod 262 located in the cleaning frame 261 along the moving direction of the extension rod 262. When the extension rod 262 moves, it can retract into the cleaning frame 261 or extend from the radial structure end of the cleaning frame 261. When the extension rod 262 retracts into the cleaning frame 261, the spring 2641 is in a compressed state. When the extension rod 262 extends from the radial structure end of the cleaning frame 261, the spring 2641 is in an uncompressed state. A driving groove is provided in the cleaning frame 261. The pump body 2642 drives the extension rod 262 to move by injecting air into the driving groove or discharging the air in the driving groove.

[0043] Reference Figure 3 、 Figure 9 and Figure 10 : A moving unit 266 is provided at the end of the cleaning frame 261 for driving the cleaning frame 261 to move along the axial direction of the filter 21, and a second driving unit 265 is also provided at the end of the cleaning frame 261 for driving the cleaning frame 261 to rotate around the axis of the filter 21. During cleaning, the filter 21 is in a continuous rotation state, and the moving unit 266 pulls the cleaning frame 261 into the inner ring of the filter 21, and then the extension rod 262 drives the cleaning brush 263 to extend and contact the inner wall of the filter 21, and the second driving unit 265 drives the cleaning frame 261 to rotate, and the rotation direction of the cleaning frame 261 is opposite to the rotation direction of the filter 21.

[0044] The mobile unit 266 includes a mobile frame 2661, a guide rod 2662, a threaded rod 2663 and a third rotation driver 2664. The mobile frame 2661 is arranged to move horizontally on one side of the filter housing 2. The cleaning frame 261 is rotatably arranged on the mobile frame 2661. The guide rod 2662 passes through the mobile frame 2661 in the horizontal direction and slides with the mobile frame 2661. The threaded rod 2663 is arranged parallel to one side of the guide rod 2662, and the threaded rod 2663 passes through the mobile frame 2661. The threaded rod 2663 is threadedly engaged with the mobile frame 2661. The end of the threaded rod 2663 is provided with a third rotation driver 2664, which is used to drive the threaded rod 2 663 rotates, and the third rotation driver 2664 is preferably a servo motor. When cleaning is needed, the third rotation driver 2664 is started, the threaded rod 2663 rotates and causes the movable frame 2661 to move in the horizontal direction. The movable frame 2661 gradually moves in the direction away from the filter housing 2, so that the cleaning frame 261 is pulled into the inner ring of the filter screen 21, and then the pushing unit 264 pushes out the extension rod 262, so that the cleaning brush 263 provided at the end of the extension rod 262 contacts the inner ring wall of the filter ring, so that the cleaning brush 263 can clean the inner ring of the filter ring. It is worth noting that the extension rod 262 needs to be extended after the cleaning frame 261 has completely entered the inner ring of the filter screen 21. The second driving unit 265 includes a second rotation driver 2651, a second gear ring 2652 and a second gear 2653. The second gear ring 2652 is fixedly arranged at the end of the cleaning frame 261. The second gear 2653 is rotatably arranged on one side of the second gear ring 2652, and the second gear ring 2652 and the second gear 2653 are engaged with each other. The second rotation driver 2651 is arranged at the end of the second gear 2653. The second rotation driver 2651 is preferably a servo motor. The second driving unit 265 is arranged on the moving frame 2661.

[0045] Reference Figure 8 and Figure 10 : A storage box 267 for storing the filter rack is provided on one side of the filter shell 2, and a storage slot 2671 is provided in the storage box 267. The storage slot 2671 slides with the cleaning rack 261, and the blocking rack 268 is rotatably arranged at the end of the cleaning rack 261, and the blocking rack 268 slides with the storage slot 2671 along the moving direction of the cleaning rack 261. The blocking rack 268 rotates with the cleaning rack 261 when the cleaning rack 261 is located in the inner ring of the filter screen 21, and the rotation of the cleaning rack 261 is an integer at this time.

[0046] When the filter screen 21 is filtering egg whites and broken shells normally, the cleaning rack 261 is located in the storage slot 2671 of the storage box 267. When the filter screen 21 needs to be cleaned, the moving unit 266 pulls the cleaning rack 261 into the inner ring of the filter screen 21, and then the second driving unit 265 drives the cleaning rack 261 to rotate. At this time, the blocking rack 268 located at the end of the cleaning rack 261 is still located in the storage slot 2671, and the blocking rack 268 rotates with the cleaning rack 261 to block the storage slot 2671, thereby preventing the egg liquid from accidentally flowing into the storage slot 2671.

[0047] Reference Figure 5 : The exhaust unit 4 includes an exhaust slot 42 connected to the lower cavity 23. The bottom of the exhaust slot 42 is an inclined structure, and the exhaust slot 42 is inclined downward toward the lower cavity 23. The exhaust fan 41 is arranged at the upper part of the exhaust slot 42, and the exhaust fan 41 draws out the air in the lower cavity 23 through the exhaust slot 42.

[0048] In this way, when the exhaust fan 41 draws air through the exhaust slot 42, the egg liquid will not be accidentally sucked out by the exhaust fan 41. Due to the inclined design of the exhaust slot 42, it is ensured that the egg white can be smoothly discharged back into the lower cavity 23 after entering the exhaust slot 42.

[0049] Reference Figure 3-Figure 5 The centrifugal unit 1 includes a centrifugal bucket 11, a scraping plate 12 and a casing 13. The centrifugal bucket 11 is vertically arranged and the upper opening of the centrifugal bucket 11 is larger than the lower opening. The casing 13 is sleeved on the periphery of the centrifugal bucket 11. There is an annular cavity between the casing 13 and the centrifugal bucket 11. The centrifugal bucket 11 throws the protein into the annular cavity. The scraping plate 12 is fixedly arranged on the side wall of the casing 13. The scraping plate 12 is always in contact with the side wall and bottom of the annular cavity. A discharge port is provided at the bottom of the annular cavity.

[0050] A third driving unit 14 is provided on the upper part of the centrifugal bucket 11, and the third driving unit 14 is used to drive the centrifugal bucket 11 to rotate. The structure of the third driving unit 14 is the same as that of the first driving unit 3, and will not be repeated here. When the centrifugal bucket 11 rotates, the protein can be thrown out. At the same time, the scraping plate 12 provided on the centrifugal bucket 11 can also scrape off the protein attached to the side wall and bottom of the annular cavity and discharge it from the discharge port.

[0051] Reference Figures 1-10 The present invention also relates to a centrifugal separation method for removing broken shells from egg liquid for extracting egg protein, which uses a centrifugal separation device for removing broken shells from egg liquid for extracting egg protein. The specific steps are as follows:

[0052] S1, centrifugal unit 1 centrifuges the protein part in the egg liquid, the protein part in the egg liquid is centrifuged and thrown out, and the broken shells in the protein are discharged into the filter housing 2 by the centrifugal unit 1. The broken shells entering the filter housing 2 fall on the upper part of the filter screen 21, i.e., in the upper cavity 22 of the filter housing 2.

[0053] S2, the exhaust unit 4 drives the air in the filter housing 2 to move vertically from top to bottom, the flowing air sucks out the protein attached to the broken shells and discharges it into the lower cavity 23 through the filter screen 21, and a collecting unit 24 is provided on one side of the upper cavity 22. The first driving unit 3 runs synchronously when the exhaust unit 4 is working, and the first driving unit 3 drives the filter screen 21 to rotate toward the collecting unit 24, and the filter screen 21 puts the broken shells attached to its upper part into the collecting unit 24.

[0054] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A centrifugal separation device for egg liquid and egg shell removal for egg protein extraction, comprising a centrifugal unit (1); It is characterized in that A filter housing (2) is provided at the bottom of the centrifugal unit (1). A filter screen (21) is rotatably provided in the filter housing (2). The filter screen (21) is an annular structure. The filter housing (2) is separated vertically from top to bottom into an upper cavity (22) and a lower cavity (23). Broken shells are intercepted by the filter screen (21) and remain in the upper cavity (22). Proteins filtered by the filter screen (21) flow into the lower cavity (23). A filter for driving the filter is provided at one end of the filter screen (21). The net (21) is a first driving unit (3) that rotates around the axis of the filter net (21), and an exhaust unit (4) is arranged in the lower cavity (23). The exhaust unit (4) extracts the air in the lower cavity (23), and the air in the filter housing (2) flows from top to bottom in a vertical direction. The flowing air extracts the protein that falls on the filter net (21), and the protein passes through the upper part of the filter net (21) and the lower part of the filter net (21) in sequence in the vertical direction, and finally enters the lower cavity (23) and is discharged; A collecting unit (24) is provided on one side of the upper cavity (22), the collecting unit (24) comprising a collecting cavity (241), the collecting cavity (241) being located on one side of the upper cavity (22) and being in communication with the upper cavity (22), and a collecting box (242) being provided at the bottom of the collecting cavity (241) so as to slide in a horizontal direction, the collecting box (242) being used to collect broken shells; A cleaning unit (26) is provided at one end of the filter screen (21), the cleaning unit (26) comprising a cleaning frame (261) sliding along the axial direction of the filter screen (21), the cleaning frame (261) being a radial structure, an extension rod (262) being slidably provided on the cleaning frame (261) along the radial direction of the cleaning frame (261), a cleaning brush (263) being fixedly provided on the inner ring end of the extension rod (262) facing the filter screen (21), and a pushing unit (264) for driving the extension rod (262) to move is provided on the cleaning frame (261); A moving unit (266) for driving the cleaning frame (261) to move along the axis of the filter (21) is provided at the end of the cleaning frame (261), and a second driving unit (265) for driving the cleaning frame (261) to rotate around the axis of the filter (21) is also provided at the end of the cleaning frame (261). During cleaning, the filter (21) is in a continuously rotating state, and the moving unit (266) pulls the cleaning frame (261) into the inner ring of the filter (21). Then, the extension rod (262) drives the cleaning brush (263) to extend and contact the inner wall of the filter (21), and the second driving unit (265) drives the cleaning frame (261) to rotate. The rotation direction of the cleaning frame (261) is opposite to that of the filter (21). A storage box (267) for storing the cleaning rack (261) is provided on one side of the filter housing (2). A storage slot (2671) is provided in the storage box (267). The storage slot (2671) and the cleaning rack (261) are slidably matched. A blocking rack (268) is rotatably arranged at an end of the cleaning rack (261). The blocking rack (268) is slidably matched with the storage slot (2671) along the moving direction of the cleaning rack (261). The blocking rack (268) is rotatably matched with the cleaning rack (261) when the cleaning rack (261) is located in the inner ring of the filter screen (21). The rotation of the cleaning rack (261) is an integer.

2. The egg liquid and shell removal centrifugal separation device for extracting egg protein according to claim 1, characterized in that: A cleaning roller (243) is rotatably arranged at the connection between the upper cavity (22) and the collecting cavity (241); the axis of the cleaning roller (243) is parallel to the axis of the filter screen (21); the cleaning roller (243) is in contact with the outer periphery of the filter screen (21); the rotation direction of the cleaning roller (243) is opposite to the rotation direction of the filter screen (21); and the first driving unit (3) can simultaneously drive the cleaning roller (243) and the filter screen (21) to rotate.

3. The egg liquid and shell removal centrifugal separation device for extracting egg protein according to claim 1, characterized in that: A liquid discharge unit (25) is arranged at the lower part of the lower cavity (23). The liquid discharge unit (25) comprises a pre-storage tube (251) connected to the lower cavity (23). The pre-storage tube (251) is arranged vertically. The upper part and the lower part of the pre-storage tube (251) are respectively provided with valve bodies (252). One of the two valve bodies (252) is selectively opened, and before one of the valve bodies (252) is opened, the other valve body (252) is already in a closed state.

4. The egg liquid shell removal centrifugal separation device for extracting egg protein according to claim 1, characterized in that: The exhaust unit (4) comprises an exhaust slot (42) connected to the lower cavity (23); the bottom of the exhaust slot (42) is an inclined structure, and the exhaust slot (42) is inclined downward toward the lower cavity (23); the exhaust fan (41) is arranged at the upper part of the exhaust slot (42), and the exhaust fan (41) exhausts air in the lower cavity (23) through the exhaust slot (42).

5. The egg liquid and shell removal centrifugal separation device for extracting egg protein according to claim 1, characterized in that: The centrifugal unit (1) comprises a centrifugal bucket (11), a scraper plate (12) and a casing (13). The centrifugal bucket (11) is arranged vertically and the upper opening of the centrifugal bucket (11) is larger than the lower opening. The casing (13) is sleeved on the periphery of the centrifugal bucket (11). An annular cavity is present between the casing (13) and the centrifugal bucket (11). The centrifugal bucket (11) throws protein into the annular cavity. The scraper plate (12) is fixedly arranged on the side wall of the casing (13). The scraper plate (12) is always in contact with the side wall and the bottom of the annular cavity. A discharge port is arranged at the bottom of the annular cavity.

6. A method for centrifugal separation of egg liquid for extracting egg protein and removing broken shells, using the centrifugal separation device for extracting egg protein and removing broken shells according to any one of claims 1 to 5, characterized in that: The specific steps are as follows: S1, the centrifugal unit (1) centrifuges the egg white portion in the egg liquid, the egg white portion in the egg liquid is centrifuged out, and the broken shells in the egg white are discharged into the filter housing (2) by the centrifugal unit (1), and the broken shells entering the filter housing (2) fall on the upper part of the filter screen (21), that is, the upper cavity (22) of the filter housing (2); S2, the exhaust unit (4) drives the air in the filter housing (2) to move from top to bottom in the vertical direction, the flowing air sucks out the protein attached to the broken shells and discharges it into the lower cavity (23) through the filter screen (21), a collecting unit (24) is provided on one side of the upper cavity (22), the first driving unit (3) operates synchronously with the exhaust unit (4) when the exhaust unit (4) is working, the first driving unit (3) drives the filter screen (21) to rotate toward the collecting unit (24), and the filter screen (21) puts the broken shells attached to the upper part thereof into the collecting unit (24).

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