Concentration and extraction device and process for corn steep liquor

Abstract

The invention provides a corn steep liquor concentration and extraction device and technology, and belongs to the technical field of concentration and extraction device.The corn steep liquor concentration and extraction device comprises a supporting frame, a tank body and a driving part, the interior of the tank body is divided into a main separation cavity and a corn steep liquor collection cavity through a splitting plate, a rotating shaft is coaxially arranged in the main separation cavity, and U-shaped partition plates are arranged on the rotating shaft in an annular array mode; u-shaped partition plates are arranged in the total separation cavity, arc-shaped nanofiltration membranes are installed between every two adjacent U-shaped partition plates, the U-shaped partition plates and the arc-shaped nanofiltration membranes divide the interior of the total separation cavity into a plurality of clear liquid separation cavities and corn steep liquor separation cavities which are consistent in volume, extrusion plates are slidably installed on the U-shaped partition plates, and first reset springs are connected between the extrusion plates and the U-shaped partition plates; an eccentric arc-shaped plate is fixedly mounted at the upper half part of the inner wall of the main separation cavity; according to the device, clear liquid and corn steep liquor in a mixture can be separated, concentration and extraction of the corn steep liquor are completed, the clear liquid near the holes in the arc-shaped nanofiltration membrane can be used for backflushing the surface of the arc-shaped nanofiltration membrane, and the nanofiltration membrane is prevented from being blocked.

Description

Technical Field

[0001] The present application relates to the technical field of concentration and extraction devices, and in particular to a concentration and extraction device and process for corn pulp. Background Art

[0002] Corn steep liquor is a by-product of corn processing. It is a brown, viscous liquid obtained by soaking corn. Corn steep liquor powder is mainly used in the fermentation industry such as penicillin, erythromycin, vitamins, amino acids, enzyme preparations, etc. It is used as a supplement of nutrients such as water-soluble plant protein and water-soluble vitamins in the biological fermentation process.

[0003] In the process of concentrating and extracting corn slurry, the mixture is often filled into a tank body, and the clear liquid in the mixture can be separated through a screen by squeezing the mixture, or the tank body is rotated to separate the clear liquid under the action of centrifugal force. However, when the above method is used to concentrate and extract corn slurry, screen separation or centrifugation is prone to cause blockage.

[0004] Referring to the Chinese patent document with announcement number CN221693055U and the name of a ginseng extract multi-effect membrane concentration separation and purification device, it includes a tank body, a pressure tube, a piston, a material collection ring, a primary filter screen and a secondary filter screen. The pressure tube runs through the top of the tank body, and the piston can pressurize the inside of the pressure tube. The primary filter screen is located inside the pressure tube. The bottom of the tank body is connected to the material collection ring, and the tank body is provided with a secondary filter screen. When in use, the extract is added to the pressure tube, and the piston is pressed down to increase the pressure in the pressure tube to pressurize the extract. The extract can be quickly purified through the primary filter screen, and the initially purified liquid flows directly into the tank body. Under the action of the centrifugal force of the tank body, the liquid passes through the secondary filter screen to complete the secondary purification. By setting the primary filter assembly and the secondary filter assembly, multi-stage filtration can be achieved, thereby improving the purity of the extract. When the primary filter screen needs to be replaced, the piston can be lifted to separate it from the pressure cylinder, simplifying the filter screen replacement work.

[0005] Referring to the above technical scheme, when the liquid enters the nanofiltration membrane for concentration, when the liquid concentration gradually increases, the solute particles are easily deposited on the membrane surface and in the pores, which can easily clog the nanofiltration membrane pores and reduce the flux and service life of the membrane. In the above scheme, the filter screen is replaced regularly. When the filter screen is replaced, the equipment needs to be stopped, which can easily reduce work efficiency. When the filter screen is replaced, the high-concentration liquid residue stuck on the filter screen can easily cause waste and be difficult to clean. Summary of the invention

[0006] In view of this, the present application provides a corn syrup concentration and extraction device and process, which are mainly used to solve the problem that high-concentration residues on nanofiltration membranes are difficult to fall off.

[0007] In order to solve the above technical problems, the present application provides a corn syrup concentration and extraction device and process.

[0008] In the first aspect, the present application provides a corn slurry concentration and extraction device, including a support frame, a tank body and a driving part. The interior of the tank body is configured to be cylindrical, and a splitting plate is installed inside the tank body. The splitting plate splits the interior of the tank body into a total separation chamber and a corn slurry collection chamber. A rotating shaft is coaxially arranged in the total separation chamber, and a U-shaped partition is arranged in a circular array on the rotating shaft. An arc-shaped nanofiltration membrane is installed between the two U-shaped partitions. The U-shaped partitions and the arc-shaped nanofiltration membranes split the interior of the total separation chamber into a plurality of clear liquid separation chambers and corn slurry separation chambers with the same volume. An extrusion plate is slidably installed on the U-shaped partition, and a reset spring is connected between the extrusion plate and the U-shaped partition. A driving plate for driving the extrusion plate to slide is installed inside the U-shaped partition.

[0009] By adopting the above technical scheme, the corn slurry collecting chamber can collect the corn slurry that has been screened, and a mixture of corn slurry and clear liquid is placed inside the corn slurry collecting chamber. When the rotating shaft drives the U-shaped partition and the arc-shaped nanofiltration membrane to rotate clockwise, under the action of the eccentric arc plate and the extrusion plate, the internal space of the clear liquid separation chamber and the corn slurry separation chamber can be changed, and the water in the mixture inside the corn slurry separation chamber can be squeezed into the clear liquid separation chamber to separate the corn slurry and clear liquid in the mixed liquid. When the internal space of the corn slurry separation chamber gradually becomes larger and no foreign objects enter, a vacuum negative pressure is generated in the corn slurry separation chamber, and the clear liquid near the arc-shaped nanofiltration membrane can flow to the corn slurry separation chamber, and the clear liquid in the holes near the arc-shaped nanofiltration membrane can be backflushed to prevent the corn concentrate from clogging the holes on the arc-shaped nanofiltration membrane.

[0010] Optionally, a driving block is connected to the driving plate, and a second return spring is connected to the driving block for making the driving block abut against the eccentric arc plate.

[0011] By adopting the above technical solution, the second reset spring can make the driving block always abut against the eccentric arc plate and the inner wall of the tank body.

[0012] Optionally, a clear liquid collecting chamber is coaxially provided in the rotating shaft, a liquid inlet valve is fixedly mounted on the rotating shaft, and a liquid outlet pipe communicating with the clear liquid collecting chamber is provided on the tank body.

[0013] By adopting the above technical solution, the liquid inlet valve can draw the liquid inside the clear liquid separation chamber into the clear liquid collection chamber, and discharge it through the liquid outlet pipe.

[0014] Optionally, a slurry suction pump located inside the corn slurry collecting chamber is arranged on the split plate, and a slurry outlet pipe communicating with the corn slurry collecting chamber is arranged on the tank body.

[0015] By adopting the above technical solution, the slurry suction pump can suck the concentrated slurry inside the corn slurry separation chamber into the corn slurry collecting chamber and discharge it through the slurry outlet pipe.

[0016] Optionally, a feed pipe is installed on the tank body for allowing the mixed liquid to enter the corn slurry separation chamber.

[0017] By adopting the above technical solution, the external mixed liquid can enter each corn pulp separation cavity of the annular array in sequence through the feed pipe.

[0018] Optionally, the extrusion plate is configured as a square plate, a first inclined surface is provided at the bottom of the extrusion plate, a support block is provided at the top of the driving plate, and a second inclined surface abutting against the first inclined surface is provided on the support block.

[0019] By adopting the above technical solution, during the process of the first inclined surface and the second inclined surface abutting or separating, the extrusion plate can protrude from the U-shaped partition or be flush with the U-shaped partition, thereby reducing or expanding the internal space of the clear liquid separation chamber.

[0020] Optionally, the driving member includes a driving motor installed on a support frame, a driving gear is connected to the output shaft of the driving motor, a driven gear is meshed on the driving gear, a driving shaft that passes through the tank body and the split plate is connected to the driven gear, and the driving shaft is fixedly connected to the rotating shaft.

[0021] By adopting the above technical solution, the driving motor can be started to drive the driving gear to rotate, and the driving gear can drive the meshing driven gear to rotate, so that the driven gear can drive the driving shaft and the rotating shaft to rotate, so that the U-shaped partition and the arc-shaped nanofiltration membrane can rotate clockwise.

[0022] Optionally, the drive motor is configured as a stepper motor.

[0023] By adopting the above technical solution, the stepper motor can be started in a pause mode, thereby controlling the rotation angle of the U-shaped partition and the arc-shaped nanofiltration membrane, so that the clear liquid separation chamber and the corn slurry separation chamber can be accurately aligned with the feed pipe, liquid outlet pipe and slurry outlet pipe, ensuring the accurate entry and exit of the liquid, improving the automation level of the equipment and the convenience of operation. In addition, the use of the stepper motor also enables the device to adjust the speed according to actual needs to adapt to the processing requirements of corn slurry with different concentrations, further improving the flexibility and practicality of the equipment.

[0024] In a second aspect, the present application provides a corn syrup concentration and extraction process, which is applied to the corn syrup concentration and extraction device described in the first aspect, and the corn syrup concentration and extraction process includes: S1, feeding: firstly, the driving motor is started to drive the driving gear to rotate, and the driving gear drives the meshing driven gear to rotate, so that the driven gear can drive the driving shaft and the rotating shaft to rotate, and the U-shaped partition and the arc-shaped nanofiltration membrane rotate clockwise. When one of the corn slurry separation chambers rotates to the feed inlet, the mixture of corn slurry and clear liquid is filled into the corn slurry separation chamber through the feed inlet, and all the corn slurry separation chambers are filled in sequence; S2, clear liquid separation: when the driving motor drives the clear liquid separation chamber and the corn syrup separation chamber to rotate clockwise from the left side of the rotating shaft to the top of the rotating shaft, under the action of the eccentric arc plate, the driving block and the driving plate gradually retract to the inner side of the U-shaped partition, and the extrusion plate gradually becomes flush with the plane plate of the U-shaped partition, the internal space of the relative clear liquid separation chamber gradually becomes larger, and the internal space of the corn syrup separation chamber gradually becomes smaller, and the clear liquid in the mixture in the corn syrup separation chamber is squeezed into the clear liquid separation chamber; S3, clear liquid backwashing: when the driving motor drives the clear liquid separation chamber and the corn slurry separation chamber to rotate clockwise from directly above the rotating shaft to directly to the right side of the rotating shaft, under the action of the eccentric arc plate, the driving block and the driving plate gradually extend toward the opening of the U-shaped partition, and the squeezing plate gradually protrudes, and the internal space of the relative clear liquid separation chamber gradually becomes smaller, and the internal space of the corn slurry separation chamber gradually becomes larger, forming a vacuum negative pressure, and the clear liquid located at the arc-shaped nanofiltration membrane hole flows back to achieve backwashing.

[0025] By adopting the above technical scheme, in the process of separating the mixed liquid, not only can the corn slurry and the clear liquid in the mixed liquid be separated smoothly, but also the blockages at the holes of the arc-shaped nanofiltration membrane can be flushed through the backwash process to prevent the nanofiltration membrane from being blocked, thereby improving the flux and service life of the arc-shaped nanofiltration membrane. At the same time, the device has a simple structure, is easy to operate, and is easy to maintain and clean.

[0026] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects: 1. When the rotating shaft drives the clear liquid separation chamber and the corn slurry separation chamber to rotate clockwise and contact the eccentric arc plate, the space inside the clear liquid separation chamber and the corn slurry separation chamber can be gradually expanded or reduced through the cooperation of the U-shaped partition, the extrusion plate, the reset spring 1, the drive plate, the drive block and the reset spring 2. Under the action of the hollow negative pressure, the clear liquid in the mixed liquid can enter the clear liquid separation chamber or the clear liquid in the holes on the arc-shaped nanofiltration membrane can be recoiled to the surface of the arc-shaped nanofiltration membrane. Compared with the traditional technology of stopping the equipment and replacing the screen regularly, the equipment can work uninterruptedly, improve the work efficiency, and reduce the waste of corn concentrate on the arc-shaped nanofiltration membrane.

[0027] 2. By sliding the extrusion plate set on the U-shaped partition, the protruding driving plate of the extrusion plate is pushed, which drives the reset spring 1 of the extrusion plate to reset the eccentric arc plate that squeezes the driving block, so that the driving block abuts against the reset spring 2 on the eccentric arc plate. A series of ingenious and simple structural designs make the entire concentration and extraction process more efficient and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a corn steep liquor concentration and extraction device according to the present application; Figure 2 It is a front cross-sectional view of the device of the present application; Figure 3 This is an internal cross-sectional view of the tank body of this application; Figure 4 This is the internal side view of the tank for this application; Figure 5 A side view of the U-shaped partition and the drive block of the present application; Figure 6 Internal cross-sectional view of the U-shaped spacer and drive block for this application.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. support frame; 11. tank body; 12. split plate; 13. total separation chamber; 131. clear liquid separation chamber; 132. corn slurry separation chamber; 14. corn slurry collection chamber; 15. feed pipe; 2. separation recoil assembly; 21. rotating shaft; 22. U-shaped partition; 23. arc-shaped nanofiltration membrane; 24. extrusion plate; 25. reset spring 1; 26. drive plate; 261. support block; 27. eccentric arc-shaped plate; 28. drive block; 29. ​​reset spring 2; 3. discharge member; 31. clear liquid collection chamber; 32. liquid inlet valve; 33. liquid outlet pipe; 34. slurry suction pump; 35. slurry outlet pipe; 4. drive member; 41. drive motor; 42. driving gear; 43. driven gear; 44. drive shaft. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application Figure 1-Figure 6 , clearly and completely describe the technical solutions of the embodiments of the present application.

[0031] In the first aspect, the present application provides a corn syrup concentration and extraction device, which adopts the following technical solution: Figure 1 , Figure 2 and Figure 3 , including a support frame 1, a tank body 11, a separation recoil assembly 2, an arc-shaped nanofiltration membrane 23, a discharge member 3 and a driving member 4. The tank body 11 is installed on the support frame 1, and the tank body 11 is set as a cylindrical shape with both ends closed. The separation recoil assembly 2 is installed inside the tank body 11. When the separation recoil assembly 2 rotates, it can not only separate the corn slurry and the clear liquid in the mixed liquid, but also recoil the clear liquid near the arc-shaped nanofiltration membrane 23 to prevent the holes on the arc-shaped nanofiltration membrane 23 from being blocked by the thick slurry. The discharge member 3 is arranged on the tank body 11, which can assist the clear liquid and corn slurry that have been separated to be discharged from the tank body 11 respectively. The driving member 4 is arranged on the support frame 1, and is used to drive the rotating shaft 21 on the separation recoil assembly 2 to rotate.

[0032] Reference Figure 2 and Figure 4The tank body 11 is provided with a split plate 12, a total separation chamber 13, and a corn slurry collection chamber 14, and a feed pipe 15 is installed on the tank body 11. The split plate 12 is parallel to the plane of the cylindrical tank body 11, and the split plate 12 splits the inside of the tank body 11 into the total separation chamber 13 and the corn slurry collection chamber 14. The outer wall curved surface of the tank body 11 is placed horizontally, and the feed pipe 15 is installed on the curved surface.

[0033] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The interior of the total separation chamber 13 is divided into a clear liquid separation chamber 131 and a corn slurry separation chamber 132. The separation backwash assembly 2 includes a rotating shaft 21, a U-shaped partition 22, an arc-shaped nanofiltration membrane 23, an extrusion plate 24, an inclined surface 1 and a reset spring 1 25. The rotating shaft 21 is coaxially arranged with the total separation chamber 13. The U-shaped partition 22 is installed on the rotating shaft 21. The U-shaped partition 22 is arranged in a plurality and arranged in a circular array. The closed end of the U-shaped partition 22 is fixedly connected to the rotating shaft 21. An arc-shaped nanofiltration membrane 23 is installed between the two U-shaped partitions 22. The U-shaped partition 22 and the arc-shaped nanofiltration membrane 23 divide the interior of the total separation chamber 13 into a plurality of corn slurry separation chambers 132 and a clear liquid separation chamber 131 with the same volume. The mixed liquid can be passed through the feed pipe 15. The corn slurry separation chamber 132 is filled, and the mixed liquid can enter the clear liquid separation chamber 131 through the holes on the arc-shaped nanofiltration membrane 23. A squeezing plate 24 is slidably installed on the U-shaped partition 22. The squeezing plate 24 is located inside the clear liquid separation chamber 131. The squeezing plate 24 is configured as a square plate and an inclined surface 1 is provided at the bottom. A reset spring 1 25 is connected between the squeezing plate 24 and the U-shaped partition 22. The reset spring 1 25 can make the squeezing plate 24 flush with the plane on the U-shaped partition 22 in the original state.

[0034] Reference Figure 6 The separation recoil assembly 2 further includes a driving plate 26, a support block 261 and a second inclined surface. The driving plate 26 is slidably mounted inside the U-shaped partition 22. The driving plate 26 is close to or away from the closed end of the U-shaped partition 22. A support block 261 is provided on the top of the driving plate 26. The support block 261 is provided with a second inclined surface abutting against the first inclined surface. When the driving plate 26 is close to the closed end of the U-shaped partition 22, the protruding second inclined surface fits with the first inclined surface. Under the action of the reset spring 1 25, the extrusion plate 24 can be flush with the plane on the U-shaped partition 22. On the contrary, when the driving plate 26 is away from the closed end of the U-shaped partition 22, the top of the support block 261 fits with the bottom of the extrusion plate 24, and the support block 261 pushes the extrusion plate 24 to protrude.

[0035] Reference Figure 4 , Figure 5 and Figure 6The separation recoil assembly 2 also includes an eccentric arc plate 27, a driving block 28 and a second return spring 29. The upper half of the inner wall of the total separation chamber 13 is fixedly mounted with an eccentric arc plate 27, which is set to a semicircular arc. The driving block 28 is connected to the driving plate 26. A protrusion located above the driving plate 26 is set on the inner wall of the U-shaped partition 22. A second return spring 29 is connected between the protrusion and the driving block 28. The elastic support of the second return spring 29 can make the driving block 28 abut against the eccentric arc plate 27 or make the driving block 28 abut against the inner wall of the tank body 11. The thickness of the eccentric arc plate 27 gradually decreases from the middle phase to both ends. When the driving block 28 contacts the eccentric arc plate 27, the change trajectory of the driving block 28 is to first gradually approach the closed end of the U-shaped partition 22, and then gradually move away from the closed end of the U-shaped partition 22.

[0036] When in use, first start the driving member 4 to drive the rotating shaft 21 to rotate when it stops, and the U-shaped partition 22, arc-shaped nanofiltration membrane 23, extrusion plate 24 and driving block 28 rotate synchronously clockwise. When the corn slurry separation chamber 132 corresponds to the feed port, the mixture is filled into the corn slurry separation chamber 132 through the feed port, and all the corn slurry separation chambers 132 are filled in turn.

[0037] When the clear liquid separation chamber 131 and the corn slurry separation chamber 132 rotate clockwise from the left side of the rotating shaft 21 to the top of the rotating shaft 21, as the thickness of the eccentric arc plate 27 gradually becomes thicker, the driving block 28 is squeezed and drives the driving plate 26 to gradually retract toward the inner side of the U-shaped partition 22, and the squeezing plate 24 gradually becomes flush with the flat plate of the U-shaped partition 22. The internal space of the clear liquid separation chamber 131 gradually becomes larger, and the internal space of the corn slurry separation chamber 132 gradually becomes smaller. The clear liquid in the mixture in the corn slurry separation chamber 132 is squeezed into the clear liquid separation chamber 131, so that the clear liquid is separated from the mixture inside the corn slurry separation chamber 132. Due to the gravity of the clear liquid itself, the clear liquid contacts the outer wall of the rotating shaft 21.

[0038] When the clear liquid separation chamber 131 and the corn slurry separation chamber 132 rotate clockwise from directly above the rotating shaft 21 to directly to the right side of the rotating shaft 21, as the thickness of the eccentric arc plate 27 gradually becomes thinner, the driving block 28 and the driving plate 26 gradually extend toward the opening of the U-shaped partition 22, and the top of the support block 261 fits with the bottom of the extrusion plate 24, the extrusion plate 24 is squeezed out, and the internal space of the clear liquid separation chamber 131 gradually becomes smaller, and the internal space of the corn slurry separation chamber 132 gradually becomes larger. At this time, no other fillers enter the corn slurry separation chamber 132, and a vacuum negative pressure is formed in the corn slurry separation chamber 132. The clear liquid at the hole of the arc-shaped nanofiltration membrane 23 flows back to achieve backwashing. The arc-shaped nanofiltration membrane 23 can be backwashed once every rotation of the rotating shaft 21 to prevent the concentrated slurry from clogging the sieve holes on the arc-shaped nanofiltration membrane 23.

[0039] Reference Figure 2The discharge member 3 includes a clear liquid collection chamber 31, a liquid inlet valve 32, a liquid outlet pipe 33, a slurry suction pump 34 and a slurry outlet pipe 35. The clear liquid collection chamber 31 is opened in the rotating shaft 21, and the clear liquid collection chamber 31 is coaxially arranged with the rotating shaft 21. The liquid inlet valve 32 is fixedly mounted on the rotating shaft 21. The liquid outlet pipe 33 is mounted on the tank body 11 and communicated with the inside of the clear liquid collection chamber 31. The slurry suction pump 34 is mounted on the split plate 12 and is located in the corn slurry collection chamber 14. The slurry outlet pipe 35 is fixedly mounted on the tank body 11 and communicated with the corn slurry collection chamber 14.

[0040] During use, the clear liquid inside the clear liquid separation chamber 131 is sucked into the clear liquid collecting chamber 31 by the liquid inlet valve 32 and discharged from the liquid outlet pipe 33, and the corn concentrated slurry inside the corn slurry separation chamber 132 is sucked into the corn slurry collecting chamber 14 by the slurry suction pump 34 and discharged from the slurry outlet pipe 35.

[0041] Reference Figure 1 and Figure 2 The driving member 4 includes a driving motor 41, a driving gear 42, a driven gear 43 and a driving shaft 44. The driving motor 41 is mounted on the support frame 1, and the driving motor 41 is configured as a stepping motor. The driving gear 42 is connected to the output shaft of the driving motor 41, and the driven gear 43 is meshedly arranged on the driving gear 42. The driven gear 43 is connected to the driving shaft 44, and the driving shaft 44 passes through the tank body 11 and the split plate 12, and the driving shaft 44 is fixedly connected to the rotating shaft 21.

[0042] When in use, the driving motor 41 is started to drive the driving gear 42 , the driven gear 43 and the driving shaft 44 to rotate in sequence, thereby causing the rotating shaft 21 to rotate.

[0043] Reference Figure 1 and Figure 2 This embodiment provides a corn syrup concentration and extraction device. The implementation principle of a corn syrup concentration and extraction device in the embodiment of the present application is as follows: When using the device, first start the driving member 4 to drive the rotating shaft 21 to rotate. The rotation of the rotating shaft 21 can drive the U-shaped partition plate 22 and the arc-shaped nanofiltration membrane 23 to rotate clockwise. During the clockwise rotation of the clear liquid separation chamber 131 and the corn slurry separation chamber 132 from the left side of the rotating shaft 21 to the top of the rotating shaft 21, the internal space of the clear liquid separation chamber 131 can be gradually enlarged, and the internal space of the corn slurry separation chamber 132 can be gradually reduced. The clear liquid in the mixture in the corn slurry separation chamber 132 is squeezed to the clear liquid separation chamber 131. When the cavity 131, the clear liquid separation cavity 131 and the corn slurry separation cavity 132 rotate clockwise from directly above the rotating shaft 21 to directly to the right side of the rotating shaft 21, the internal space of the clear liquid separation cavity 131 gradually becomes smaller, and the internal space of the corn slurry separation cavity 132 gradually becomes larger, a vacuum negative pressure is formed in the corn slurry separation cavity 132, and the clear liquid at the holes of the arc-shaped nanofiltration membrane 23 flows back to achieve backwashing. The arc-shaped nanofiltration membrane 23 can be backwashed once every rotation of the rotating shaft 21 to prevent the concentrated slurry from clogging the sieve holes on the arc-shaped nanofiltration membrane 23.

[0044] In a second aspect, the present application provides a corn syrup concentration and extraction process, which is applied to a corn syrup concentration and extraction device of the first aspect, and the corn syrup concentration and extraction process includes: S1, feeding: firstly, the driving motor 41 is started to drive the driving gear 42 to rotate, and the driving gear 42 drives the meshing driven gear 43 to rotate, so that the driven gear 43 can drive the driving shaft 44 and the rotating shaft 21 to rotate, and the U-shaped partition 22 and the arc-shaped nanofiltration membrane 23 rotate clockwise, and when one of the corn slurry separation chambers 132 rotates to the feed inlet, the mixture of corn slurry and clear liquid is filled into the corn slurry separation chamber 132 through the feed inlet, and all the corn slurry separation chambers 132 are filled in sequence; S2, separation of clear liquid: when the driving motor 41 drives the clear liquid separation chamber 131 and the corn slurry separation chamber 132 to rotate clockwise from the left side of the rotating shaft 21 to the top of the rotating shaft 21, under the action of the eccentric arc plate 27, the driving block 28 and the driving plate 26 gradually retract to the inner side of the U-shaped partition 22, and the squeezing plate 24 gradually becomes flush with the plane plate of the U-shaped partition 22, the internal space of the clear liquid separation chamber 131 gradually becomes larger, and the internal space of the corn slurry separation chamber 132 gradually becomes smaller, and the clear liquid in the mixture in the corn slurry separation chamber 132 is squeezed into the clear liquid separation chamber 131; S3, clear liquid backwashing: when the driving motor 41 drives the clear liquid separation chamber 131 and the corn slurry separation chamber 132 to rotate clockwise from directly above the rotating shaft 21 to directly to the right side of the rotating shaft 21, under the action of the eccentric arc plate 27, the driving block 28 and the driving plate 26 gradually extend toward the opening of the U-shaped partition 22, and the squeezing plate 24 gradually protrudes, and the internal space of the relative clear liquid separation chamber 131 gradually becomes smaller, and the internal space of the corn slurry separation chamber 132 gradually becomes larger, forming a vacuum negative pressure, and the clear liquid located at the hole of the arc-shaped nanofiltration membrane 23 flows back to achieve backwashing.

[0045] By adopting the above technical scheme, in the process of separating the mixed liquid, not only can the corn slurry and the clear liquid in the mixed liquid be separated smoothly, but also the blockages at the holes of the arc-shaped nanofiltration membrane 23 can be flushed through the backwash process to prevent the nanofiltration membrane from being blocked, thereby improving the flux and service life of the arc-shaped nanofiltration membrane 23. At the same time, the device has a simple structure, is easy to operate, and is easy to maintain and clean.

[0046] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

Claims

1. A corn syrup concentration and extraction device, comprising a support frame (1), a tank body (11) and a driving member (4), characterized in that: A split plate (12) is installed inside the tank body (11), and the split plate (12) splits the inside of the tank body (11) into a total separation chamber (13) and a corn syrup collection chamber (14); A rotating shaft (21) is coaxially arranged in the total separation chamber (13), a U-shaped partition (22) is arranged in an annular array on the rotating shaft (21), and an arc-shaped nanofiltration membrane (23) is installed between the two U-shaped partitions (22) separated from each other. The U-shaped partition (22) and the arc-shaped nanofiltration membrane (23) divide the interior of the total separation chamber (13) into a plurality of clear liquid separation chambers (131) and corn syrup separation chambers (132) of uniform volume. An extrusion plate (24) is slidably installed on the U-shaped partition (22), a return spring (25) is connected between the extrusion plate (24) and the U-shaped partition (22), a driving plate (26) for driving the extrusion plate (24) to slide is installed inside the U-shaped partition (22), and an eccentric arc-shaped plate (27) is fixedly installed on the upper half of the inner wall of the total separation chamber (13).

2. The corn steep liquor concentration and extraction device according to claim 1, characterized in that: The driving plate (26) is connected to a driving block (28), and the driving block (28) is connected to a second return spring (29) for causing the driving block (28) to abut against the eccentric arc plate (27).

3. The corn steep liquor concentration and extraction device according to claim 2, characterized in that: A clear liquid collecting chamber (31) is coaxially provided in the rotating shaft (21), a liquid inlet valve (32) is fixedly mounted on the rotating shaft (21), and a liquid outlet pipe (33) communicating with the clear liquid collecting chamber (31) is provided on the tank body (11).

4. The corn steep liquor concentration and extraction device according to claim 3, characterized in that: The split plate (12) is provided with a slurry suction pump (34) located inside the corn slurry collection chamber (14), and the tank body (11) is provided with a slurry outlet pipe (35) connected to the corn slurry collection chamber (14).

5. The corn steep liquor concentration and extraction device according to claim 4, characterized in that: The tank body (11) is provided with a feed pipe (15) for allowing the mixed liquid to enter the corn slurry separation chamber (132).

6. The corn steep liquor concentration and extraction device according to claim 5, characterized in that: The extrusion plate (24) is configured as a square plate, and an inclined surface 1 is provided at the bottom of the extrusion plate (24).

7. The corn steep liquor concentration and extraction device according to claim 6, characterized in that: A support block (261) is provided on the top of the driving plate (26), and a second inclined surface abutting against the first inclined surface is provided on the support block (261).

8. The corn steep liquor concentration and extraction device according to claim 7, characterized in that: The driving member (4) comprises a driving motor (41) mounted on the support frame (1); a driving gear (42) is connected to the output shaft of the driving motor (41); a driven gear (43) is meshedly arranged on the driving gear (42); a driving shaft (44) penetrating the tank body (11) and the split plate (12) is connected to the driven gear (43); and the driving shaft (44) is fixedly connected to the rotating shaft (21).

9. The corn steep liquor concentration and extraction device according to claim 8, characterized in that: The driving motor (41) is configured as a stepping motor.

10. A corn steep liquor concentration and extraction process, applied to the corn steep liquor concentration and extraction device according to claim 9, wherein the corn steep liquor concentration and extraction process comprises: S1, feeding: firstly, the driving motor (41) is started to sequentially drive the driving gear (42), the driven gear (43), the driving shaft (44) and the rotating shaft (21) to rotate, and the U-shaped partition plate (22) and the arc-shaped nanofiltration membrane (23) rotate clockwise. When the corn slurry separation chamber (132) rotates to the feeding port, the mixture of corn slurry and clear liquid is filled into the corn slurry separation chamber (132) through the feeding port; S2, clear liquid separation: when the driving motor (41) drives the clear liquid separation chamber (131) and the corn syrup separation chamber (132) to rotate clockwise from the left side of the rotating shaft (21) to the top of the rotating shaft (21), the internal space of the clear liquid separation chamber (131) gradually increases, and the internal space of the corn syrup separation chamber (132) gradually decreases, and the clear liquid in the mixture in the corn syrup separation chamber (132) is squeezed into the clear liquid separation chamber (131); S3, clear liquid backwashing: when the driving motor (41) drives the clear liquid separation chamber (131) and the corn slurry separation chamber (132) to rotate clockwise from directly above the rotating shaft (21) to directly to the right side of the rotating shaft (21), the internal space of the clear liquid separation chamber (131) gradually becomes smaller, and the internal space of the corn slurry separation chamber (132) gradually becomes larger and a vacuum negative pressure is formed inside, and the clear liquid located at the hole of the arc-shaped nanofiltration membrane (23) flows back to achieve backwashing.

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