Two-stage filtration starch separator

Abstract

The utility model discloses a two-stage filtration starch separator, which belongs to the technical field of agricultural product processing, and comprises a crushing mechanism, a separating mechanism and a water spraying mechanism, the separating mechanism comprises a filter cavity and a middle partition plate, and the filter cavity is divided into a first filter cavity and a second filter cavity; filtering inner containers for filtering and separating materials are arranged in the first filtering cavity and the second filtering cavity, a first slag discharging opening and a second slag discharging opening are formed in the tail ends of the first filtering cavity and the second filtering cavity in a one-to-one correspondence mode, and a slurry outlet is formed in the bottom of the second filtering cavity; a separating partition plate is arranged between the smashing mechanism and the separating mechanism, and a discharging through hole is formed in the separating partition plate. According to the device, more sufficient starch extraction can be realized, and the purity and fineness of a starch product are effectively improved; a stainless steel cylinder screen is adopted in the first filter cavity, so that the problem that a traditional fiber screen is easy to break and damage is solved; the materials are crushed by the licker-in and then can be discharged through the fine-hole curved net, so that the grinding fineness of the materials is greatly improved, and the extraction rate of starch in the materials is further greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural product processing, in particular to a two-stage filtering starch separator. Background Art

[0002] In the field of agricultural product processing technology, cassava, sweet potato, sweet potato, potato, water chestnut, lotus root and other crops contain a large amount of starch, which are the main materials for making starch. At present, starch is usually separated from raw materials such as potato agricultural products by a starch separator, such as a starch separator disclosed in a Chinese patent with patent publication number CN104513319 A, which includes a crushing mechanism for crushing materials, a separation mechanism for separating starch from materials, and a water spraying mechanism for supplying water to the inside of the crushing mechanism and the separation mechanism. The device can quickly complete the starch separation operation and has an automatic centering mechanism, which can ensure that the machine will not wear the cylindrical liner during operation, thereby extending the service life of the cylindrical liner, reducing the replacement and maintenance frequency of the liner, and reducing maintenance costs.

[0003] However, in the long-term use of this starch separator, it was found that the starch extraction rate was difficult to further increase, and the starch purity, fineness and other qualities were also difficult to further improve. Therefore, it is necessary to make further improvements on the basis of the existing device to better adapt to the growing market demand. Utility Model Content

[0004] One purpose of the utility model is to provide a two-stage filtration starch separator to solve the problem that the starch separation quality of the existing starch separator is difficult to further improve, to achieve more sufficient starch extraction, and to effectively improve the purity and fineness of starch products.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A two-stage filtering starch separator comprises a crushing mechanism for crushing materials, a separation mechanism for separating starch from materials, and a water spraying mechanism for supplying water to the inside of the crushing mechanism and the inside of the separation mechanism.

[0007] The separation mechanism includes a filter chamber and a middle partition, wherein the middle partition is used to separate the filter chamber into a first filter chamber and a second filter chamber of upper and lower layers, wherein the first filter chamber and the second filter chamber are both provided with a filter liner for material filtering and separation, and the first filter chamber and the second filter chamber are provided with a first slag discharge port and a second slag discharge port at the tail ends thereof correspondingly, and a slurry discharge port is provided at the bottom of the second filter chamber;

[0008] A separation partition is provided between the crushing mechanism and the separation mechanism, and a first feed channel and a second feed channel are respectively provided on the separation partition, the first feed channel is used for supplying crushed material and water into the filter liner of the first filter chamber, and the second feed channel is used for supplying material and water into the filter liner of the second filter chamber;

[0009] The first end of the middle partition is connected to the separation partition, and the second end of the middle partition extends to the tail end of the filter chamber. The middle partition is tilted downward along its second end toward the first end. The separation partition is provided with a discharge hole flush with the upper surface of the first end of the middle partition. The discharge hole allows the filtrate of the first filter chamber to flow into the second feed channel and be introduced into the second filter chamber through the second feed channel.

[0010] In one or more embodiments of the two-stage filtering starch separator, the discharge hole is located between the first feed channel and the second feed channel, the first feed channel includes a first material stopper and a first feed port opened on the separation partition, the first material stopper is used to receive the crushed material and water so that the crushed material and water enter the filter inner tank of the first filter chamber through the first feed port; the second feed channel includes a second material stopper and a second feed port opened on the separation partition, the second material stopper is used to receive the primary filter material and water flowing out of the discharge hole so that the primary filter material and water enter the filter inner tank of the second filter chamber through the second feed port.

[0011] In one or more embodiments of the two-stage filtering starch separator, the first material stopper and the second material stopper are both U-shaped plate structures or arc plate structures, and the bottom ends of the first material stopper and the second material stopper are connected to the bottom ends of the first feed port and the second feed port one by one.

[0012] In one or more embodiments of the two-stage filtering starch separator, the water spraying mechanism includes a water inlet pipe and a transfer water pipe. The first end of the water inlet pipe is used to be connected to a water source. The water inlet pipe passes through the crushing mechanism. The water inlet pipe includes a spraying section located in the crushing mechanism and used to spray water to the crushing mechanism. The second end of the water inlet pipe is connected to the water inlet end of the transfer water pipe. The water outlet end of the transfer water pipe is used to supply water to the filter inner tank of the first filter chamber.

[0013] In one or more embodiments of the two-stage filtering starch separator, the filter liner of the first filter chamber is set as the first filter liner, and the filter liner of the second filter chamber is set as the second filter liner. A first rotating shaft is axially arranged in the first filter liner, and a second rotating shaft is axially arranged in the second filter liner. The first rotating shaft is a hollow shaft structure and a plurality of water outlet holes are opened on the inner wall of the first rotating shaft. The first end of the first rotating shaft extends outward from the tail end of the first filter chamber and is connected to the water outlet end of the adapter water pipe.

[0014] In one or more embodiments of the two-stage filtering starch separator, rotating brushes are arranged in an annular array on the first rotating shaft and the second rotating shaft, and the rotating brushes are used to sweep the inner surface of the first filter liner or the second filter liner to separate the crushed material.

[0015] In one or more embodiments of the two-stage filtering starch separator, the first filter liner is a mesh cylinder structure made of metal material, the second filter liner is a cylindrical structure made of mesh cloth, and the mesh density of the second filter liner is finer than that of the first filter liner.

[0016] In one or more embodiments of the two-stage filtering starch separator, the crushing mechanism includes a crushing chamber, a licker-in roller for crushing materials, and a transmission shaft for driving the licker-in roller. The licker-in roller is arranged in the crushing chamber. A feed hopper is arranged on the crushing chamber. The feed hopper is a funnel-shaped structure or a pipe structure. A water baffle is arranged in the feed hopper. The spray section of the water inlet pipe is located below the water baffle. The water baffle is used to block the water sprayed upward by the spray section to prevent it from splashing outward.

[0017] In one or more embodiments of the two-stage filtering starch separator, the water baffle is inclined and the first end of the water baffle is inclined downward toward the licker-in roller, the first end of the water baffle is located above the licker-in roller and there is a gap between the water baffle and the licker-in roller, and the water baffle and the side wall of the feed hopper form a discharge channel.

[0018] In one or more embodiments of the two-stage filtering starch separator, the tail ends of the filter inner tanks of the first filter chamber and the second filter chamber are provided with slag outlets respectively connected to the first slag outlet and the second slag outlet, and the tail ends of the first slag outlet and the second slag outlet are connected to a slag outlet pipe through a connecting flange.

[0019] The utility model has the following beneficial effects:

[0020] The utility model separates the filter chamber of the separation mechanism into a first filter chamber and a second filter chamber of an upper and lower layer by an inclined middle partition, thereby realizing two-stage filtering and separation of starch. A separation partition is provided between the separation mechanism and the pulverizing mechanism, and a first feed channel is provided on the separation partition for pulverized materials and water to enter the first filter chamber for primary filtering and separation. The filtered material after the primary filtration falls onto the inclined middle partition and flows out from the discharge hole of the separation partition and falls into the second feed channel, and finally enters the filter liner of the second filter chamber for secondary filtering and separation. The product after secondary separation is discharged from the slurry outlet. In this way, two-stage filtration is realized, which effectively improves the purity and fineness of starch products and further improves the quality of products. The utility model has a compact structure and does not require additional transfer measures between the two-stage filtration processes, which prevents the material from being easily contaminated in the exposed environment during mid-transfer, and also effectively reduces the intermediate transfer process, which is conducive to ensuring the overall processing efficiency of the two-stage filtration.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all the advantages described above at the same time. In addition to the purposes, features and advantages described above, the present invention also has other purposes, features and advantages. The present invention will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the installation of the transfer water pipe of the preferred embodiment of the utility model.

[0025] Figure 3 It is a schematic diagram of the installation position of the water retaining plate of the preferred embodiment of the utility model.

[0026] Figure 4 It is a schematic diagram of the internal structure of the filter cavity of the preferred embodiment of the utility model.

[0027] Figure 5 It is a schematic diagram of the positions of the first slag discharge port and the second slag discharge port in a preferred embodiment of the utility model.

[0028] Figure 6 It is a schematic diagram of the installation of the rotating brush of the preferred embodiment of the utility model.

[0029] Figure 7 It is a schematic diagram of the installation of the material baffle plate of the preferred embodiment of the utility model.

[0030] Legend: 1. Mounting frame; 2. Motor; 3. First driving wheel; 4. Crushing mechanism; 5. Second driving wheel; 6. Third driving wheel; 7. Feed hopper; 8. Water baffle; 9. Water inlet pipe; 10. Adapter water pipe; 11. Separation mechanism; 12. Adapter; 13. First rotating shaft; 14. Second rotating shaft; 15. First slag discharge port; 16. Second slag discharge port; 17. Slurry discharge port; 18. Spray section; 19. Taker-in roller; 20. First material baffle; 21. Second material baffle; 22. First feeding channel; 23. Second feeding channel; 24. Separation partition; 25. Discharge through hole; 26. First filter liner; 27. First filter chamber; 28. Middle partition; 29. ​​Second filter liner; 30. Second filter chamber; 31. Rotating brush; 32. Material baffle; 33. Fine mesh. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0032] Please refer to the attached drawing, which is a structural schematic diagram of a preferred embodiment of a two-stage filtering starch separator provided by the utility model.

[0033] A two-stage filtering starch separator comprises a crushing mechanism 4 for crushing materials, a separation mechanism 11 for separating starch from materials, and a water spraying mechanism for supplying water to the inside of the crushing mechanism 4 and the inside of the separation mechanism 11.

[0034] The separation mechanism 11 includes a filter cavity and a middle partition 28. The middle partition 28 is used to separate the filter cavity into a first filter cavity 27 and a second filter cavity 30 of upper and lower layers. The first filter cavity 27 and the second filter cavity 30 are both provided with a filter liner for material filtering and separation. The tail ends of the first filter cavity 27 and the second filter cavity 30 are provided with a first slag discharge port 15 and a second slag discharge port 16 corresponding to each other. The bottom of the second filter cavity 30 is provided with a slurry discharge port 17.

[0035] A separation baffle 24 is provided between the crushing mechanism 4 and the separation mechanism 11, and a first feed channel 22 and a second feed channel 23 are provided on the separation baffle 24, respectively. The first feed channel 22 is used for supplying crushed materials and water into the filter liner of the first filter chamber 27, and the second feed channel 23 is used for supplying materials and water into the filter liner of the second filter chamber 30;

[0036] The first end of the middle partition 28 is connected to the separation partition 24, and the second end of the middle partition 28 extends to the tail end of the filter chamber. The middle partition 28 is tilted downward along its second end toward the first end. The separation partition 24 is provided with a discharge hole 25 flush with the upper surface of the first end of the middle partition 28. The discharge hole 25 allows the filtrate of the first filter chamber 27 to flow into the second feed channel 23 and is introduced into the second filter chamber 30 through the second feed channel 23.

[0037] The utility model separates the filter chamber of the separation mechanism 11 into a first filter chamber 27 and a second filter chamber 30 of upper and lower layers by an inclined middle partition 28, thereby realizing two-stage filtration and separation of starch. A separation partition 24 is arranged between the separation mechanism 11 and the crushing mechanism 4, and a first feed channel 22 is arranged on the separation partition 24 for crushed materials and water to enter the first filter chamber 27 for primary filtration and separation. The filtered material after primary filtration falls onto the inclined middle partition 28 and flows out from the discharge through hole 25 of the separation partition 24 and falls into the second feed channel 23, and finally enters the filter liner of the second filter chamber 30 for secondary filtration and separation, and the product after secondary separation is discharged from the slurry outlet 17. In this way, two-stage filtration is realized, which effectively improves the purity and fineness of starch products and further improves the quality of products.

[0038] Of course, the present invention does not exclude the possibility of arranging multiple layers of intermediate partitions 28 in the filter cavity to separate and form multiple layers of filter cavities to achieve a solution of multi-stage filtration.

[0039] In addition, in some embodiments, the two-stage filtering starch separator of the present invention further includes a mounting frame 1, which is used to support the separator body and facilitate the placement of a product collection container below the pulp outlet 17 at the bottom of the second filter chamber 30.

[0040] Preferably, please refer to Figure 4 As shown, the discharge through hole 25 is located between the first feed channel 22 and the second feed channel 23. The first feed channel 22 includes a first blocking member 20 and a first feed port opened on the separation partition 24. The first blocking member 20 is used to receive the crushed material and water so that the crushed material and water enter the filter inner tank of the first filter chamber 27 through the first feed port; the second feed channel 23 includes a second blocking member 21 and a second feed port opened on the separation partition 24. The second blocking member 21 is used to receive the primary filter material and water flowing out of the discharge through hole 25 so that the primary filter material and water enter the filter inner tank of the second filter chamber 30 through the second feed port.

[0041] It can be understood that the first feed channel 22 and the second feed channel 23 separate the vertical feed chamber of the crushing mechanism 4 in layers, so that the discharge of the first filter chamber 27 and the second filter chamber 30 are isolated, so that only the material that has passed the first-level filtration can enter the second filter chamber 30 for secondary filtration.

[0042] Specifically, the first material stopper 20 and the second material stopper 21 are both U-shaped plate structures or arc plate structures, and the bottom ends of the first material stopper 20 and the second material stopper 21 are connected to the bottom ends of the first feed port and the second feed port in a one-to-one correspondence.

[0043] Optionally, see Figure 7 The first material stopper 20 can be a plate-shaped material stopper 32, and the second material stopper 21 can be eliminated. This can save costs and simplify the structure.

[0044] It can be understood that the first material stopper 20 and the second material stopper 21 of the U-shaped plate structure or the arc plate structure are convenient for separating the vertical material discharge chamber of the crushing mechanism 4 into layers, and can completely receive the material. Since the front ends of the first rotating shaft 13 and the second rotating shaft 14 in the first filter chamber 27 and the second filter chamber 30 extend into the vertical material discharge chamber of the crushing mechanism 4 and penetrate the side wall of the vertical material discharge chamber, and the front part of the first rotating shaft 13 and the second rotating shaft 14 is provided with a propulsion section, and a spiral propulsion blade is provided on the propulsion section, and the spiral propulsion blade is used to push the material into the filter liner in the first filter chamber 27 or the second filter chamber 30, the material on the first material stopper 20 and the second material stopper 21 can be fed by the spiral propulsion blade.

[0045] Preferably, please refer to Figure 4 As shown, the water spraying mechanism includes a water inlet pipe 9 and a switching water pipe 10. The first end of the water inlet pipe 9 is used to be connected to a water source. The water inlet pipe 9 is arranged to pass through the pulverizing mechanism 4. The water inlet pipe 9 includes a spray section 18 located in the pulverizing mechanism 4 and used to spray water to the pulverizing mechanism 4. The second end of the water inlet pipe 9 is connected to the water inlet end of the switching water pipe 10. The water outlet end of the switching water pipe 10 is used to supply water to the filter inner tank of the first filter chamber 27.

[0046] It is understandable that, since the pulverized material in the first filter chamber 27 has a large particle size and poor fluidity, water is required during the filtration process to reduce the clumping of the material, improve the separation efficiency of the material, and facilitate more complete starch separation.

[0047] Preferably, please refer to Figure 4 and Figure 6 As shown, the filter liner of the first filter chamber 27 is set as the first filter liner 26, and the filter liner of the second filter chamber 30 is set as the second filter liner 29. A first rotating shaft 13 is axially arranged in the first filter liner 26, and a second rotating shaft 14 is axially arranged in the second filter liner 29. The first rotating shaft 13 is a hollow shaft structure and a plurality of water outlet holes are opened on the inner wall of the first rotating shaft 13. The first end of the first rotating shaft 13 extends outward from the tail end of the first filter chamber 27 and is connected to the water outlet end of the adapter water pipe 10.

[0048] It can be understood that the first rotating shaft 13 of the hollow shaft structure not only serves as a rotating main shaft, but also serves as a spraying water pipe, which can achieve a wider spraying effect in the first filter chamber 27, has multiple effects, and effectively simplifies the overall structure of the separation mechanism 11.

[0049] Specifically, the first end of the first rotating shaft 13 is connected to the adapter water pipe 10 through the adapter 12. The adapter 12 has different specifications so that the first rotating shaft 13 is connected to the adapter water pipes 10 of different sizes. In addition, a valve can be set at the adapter 12 to adjust the water intake.

[0050] Preferably, please refer to Figure 6 As shown, rotating brushes 31 are arranged in an annular array on the first rotating shaft 13 and the second rotating shaft 14. The rotating brushes 31 are used to sweep the inner surface of the first filter liner 26 or the second filter liner 29 to separate the crushed materials.

[0051] It is understandable that the rotating brush 31 can improve the separation efficiency of the material, which is beneficial to increase the yield of starch. It should be noted that in some embodiments, the front ends of the first rotating shaft 13 and the second rotating shaft 14 penetrate the side wall of the vertical feeding chamber of the pulverizing mechanism 4 and are respectively connected to the second driving wheel 5 and the first driving wheel 3, and the licker-in roller 19 is driven by the transmission shaft to rotate, and the front end of the transmission shaft also penetrates the side wall of the vertical feeding chamber and is connected to the third driving wheel 6, and the third driving wheel 6 is connected to the second driving wheel 5 by a belt, and the third driving wheel 6 is connected to the output shaft of the motor 2 by a belt, and the first driving wheel 3 is also connected to the output shaft of the motor 2 by a belt, so that three shafts can be driven by one driving unit, which is beneficial to the simplification of the overall structure. The motor 2 can be fixed to the mounting frame 1 by a motor bracket.

[0052] Preferably, please refer to Figure 6 As shown, the first filter liner 26 is a mesh tube structure made of metal material, and the second filter liner 29 is a tubular structure made of mesh cloth, and the mesh density of the second filter liner 29 is finer than that of the first filter liner 26.

[0053] It is understandable that, since the mesh density of the mesh cloth can be made denser, the mesh density of the second filter liner 29 in the utility model is finer than that of the first filter liner 26, so that the starch after secondary filtration is finer and has higher purity. The first filter liner 26 is made of metal material, preferably stainless steel. Compared with the traditional filter liner using a fiber mesh cylinder, which is easy to break and damage, the present application uses a metal mesh cylinder, which has better durability and stability.

[0054] Preferably, please refer to Figure 3 As shown, the crushing mechanism 4 includes a crushing chamber, a licker-in roller 19 for crushing materials and a transmission shaft for driving the licker-in roller 19. The licker-in roller 19 is arranged in the crushing chamber. A feed hopper 7 is arranged on the crushing chamber. The feed hopper 7 is a funnel-shaped structure or a pipeline structure. A water baffle 8 is arranged in the feed hopper 7. The spray section 18 of the water inlet pipe 9 is located below the water baffle 8. The water baffle 8 is used to block the water sprayed upward by the spray section 18 to prevent it from splashing outward.

[0055] In some embodiments, a fine-mesh curved net 33 is provided below the licker-in roller 19, and the fine-mesh curved net 33 is used to receive and filter the material ground and crushed by the licker-in roller 19. Only the material that meets a certain fineness requirement can be filtered and discharged through the fine-mesh curved net 33, and the coarser material continues to be ground by the licker-in roller 19, thereby effectively improving the grinding fineness of the material, and further greatly improving the extraction rate of starch in the material.

[0056] Preferably, the first end of the water baffle 8 is connected to the inner wall of the feed hopper 7, and the second end of the water baffle 8 is tilted downward relative to the first end thereof. The second end of the water baffle 8 is located above the licker-in roller 19 and has a gap relative to the licker-in roller 19, and the upper surface of the water baffle 8 forms a material discharge channel.

[0057] It can be understood that the inclined water baffle 8 can not only play a water-blocking role to prevent the spray water from splashing outward, but also the water baffle 8 can form a material discharge channel with the side wall of the feed hopper 7, so that the raw materials can be discharged smoothly from the feed hopper 7 and fall into the licker-in roller 19, so as to be concentratedly crushed by the licker-in roller 19, which is beneficial to improve the crushing effect.

[0058] Preferably, please refer to Figure 5 As shown, the tail ends of the filter inner tanks of the first filter chamber 27 and the second filter chamber 30 are both provided with slag outlets connected to the first slag outlet 15 and the second slag outlet 16 respectively, and the tail ends of the first slag outlet 15 and the second slag outlet 16 are connected to slag discharge pipes through connecting flanges.

[0059] It is understandable that the residues not filtered out in the filter inner tanks of the first filter chamber 27 and the second filter chamber 30 can be discharged from the first slag discharge port 15 and the second slag discharge port 16 through the slag discharge port. In some embodiments, the slag discharge port is circular, and the first slag discharge port 15 and the second slag discharge port 16 are both arc-shaped or semicircular to reduce the speed of material discharge, which is conducive to the material being separated by more fully sweeping by the rotating brush 31. It should be noted that a slag discharge pipe can be connected to the first slag discharge port 15 and the second slag discharge port 16 to receive the discharged slag for easy collection.

[0060] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0061] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection of the utility model.

Claims

1. A two-stage filtering starch separator, comprising a pulverizing mechanism (4) for pulverizing a material, a separation mechanism (11) for separating starch from the material, and a water spraying mechanism for supplying water to the inside of the pulverizing mechanism (4) and the inside of the separation mechanism (11), characterized in that: The separation mechanism (11) comprises a filter chamber and a middle partition (28), wherein the middle partition (28) is used to separate the filter chamber into a first filter chamber (27) and a second filter chamber (30) of upper and lower layers, wherein the first filter chamber (27) and the second filter chamber (30) are both provided with a filter inner liner for filtering and separating materials, and the tail ends of the first filter chamber (27) and the second filter chamber (30) are provided with a first slag discharge port (15) and a second slag discharge port (16) in correspondence with each other, and the bottom of the second filter chamber (30) is provided with a slurry discharge port (17); A separation baffle (24) is provided between the pulverizing mechanism (4) and the separation mechanism (11), and a first feed channel (22) and a second feed channel (23) are provided on the separation baffle (24), the first feed channel (22) being used for supplying pulverized material and water into a filter inner container of a first filter chamber (27), and the second feed channel (23) being used for supplying material and water into a filter inner container of a second filter chamber (30); The first end of the middle partition (28) is connected to the separation partition (24), and the second end of the middle partition (28) extends to the rear end of the filter chamber. The middle partition (28) is tilted downward along the direction from its second end toward the first end. The separation partition (24) is provided with a discharge through hole (25) flush with the upper surface of the first end of the middle partition (28). The discharge through hole (25) allows the filtrate of the first filter chamber (27) to flow into the second feed channel (23) and is introduced into the second filter chamber (30) through the second feed channel (23).

2. A two-stage filtering starch separator according to claim 1, characterized in that, The discharge through hole (25) is located between the first feed channel (22) and the second feed channel (23); the first feed channel (22) comprises a first material stopper (20) and a first feed port opened on the separation baffle (24); the first material stopper (20) is used to receive the crushed material and water so that the crushed material and water enter the filter liner of the first filter chamber (27) through the first feed port; the second feed channel (23) comprises a second material stopper (21) and a second feed port opened on the separation baffle (24); the second material stopper (21) is used to receive the primary filter material and water flowing out of the discharge through hole (25) so that the primary filter material and water enter the filter liner of the second filter chamber (30) through the second feed port.

3. A two-stage filtering starch separator according to claim 2, characterized in that, The first material stopper (20) and the second material stopper (21) are both U-shaped plate structures or arc plate structures, and the bottom ends of the first material stopper (20) and the second material stopper (21) are connected to the bottom ends of the first feed inlet and the second feed inlet in a one-to-one correspondence.

4. A two-stage filtering starch separator according to claim 1, characterized in that, The water spraying mechanism comprises a water inlet pipe (9) and a switching water pipe (10), wherein a first end of the water inlet pipe (9) is used to be connected to a water source, the water inlet pipe (9) is arranged to pass through the pulverizing mechanism (4), the water inlet pipe (9) comprises a spraying section (18) located in the pulverizing mechanism (4) and used to spray water to the pulverizing mechanism (4), a second end of the water inlet pipe (9) is connected to a water inlet end of the switching water pipe (10), and a water outlet end of the switching water pipe (10) is used to supply water to a filter inner container of a first filter chamber (27).

5. A two-stage filtering starch separator according to claim 4, characterized in that, The filter liner of the first filter chamber (27) is set as the first filter chamber (26), and the filter liner of the second filter chamber (30) is set as the second filter chamber (29). A first rotating shaft (13) is axially arranged in the first filter chamber (26), and a second rotating shaft (14) is axially arranged in the second filter chamber (29). The first rotating shaft (13) is a hollow shaft structure and a plurality of water outlet holes are opened on the inner wall of the first rotating shaft (13). The first end of the first rotating shaft (13) extends outward from the rear end of the first filter chamber (27) and is connected to the water outlet end of the adapter water pipe (10).

6. A two-stage filtering starch separator according to claim 5, characterized in that: Rotating brushes (31) are arranged in an annular array on the first rotating shaft (13) and the second rotating shaft (14). The rotating brushes (31) are used to sweep the inner surface of the first filter liner (26) or the second filter liner (29) to separate the crushed materials.

7. A two-stage filtering starch separator according to claim 5, characterized in that: The first filter liner (26) is a mesh cylinder structure made of metal material, and the second filter liner (29) is a cylindrical structure made of mesh cloth, and the mesh of the second filter liner (29) is finer than the mesh of the first filter liner (26).

8. A two-stage filtering starch separator according to claim 4, characterized in that: The pulverizing mechanism (4) comprises a pulverizing chamber, a licker-in roller (19) for pulverizing materials, and a transmission shaft for driving the licker-in roller (19). The licker-in roller (19) is arranged in the pulverizing chamber. A feed hopper (7) is arranged on the pulverizing chamber. The feed hopper (7) is a funnel-shaped structure or a pipe structure. A water baffle (8) is arranged in the feed hopper (7). The spray section (18) of the water inlet pipe (9) is located below the water baffle (8). The water baffle (8) is used to shield water sprayed upward by the spray section (18) to prevent it from splashing outward.

9. A two-stage filtering starch separator according to claim 8, characterized in that: The first end of the water baffle (8) is connected to the inner wall of the feed hopper (7), the second end of the water baffle (8) is arranged to be tilted downward relative to the first end, the second end of the water baffle (8) is located above the licker-in roller (19) and has a gap relative to the licker-in roller (19), and the upper surface of the water baffle (8) forms a material discharge channel.

10. A two-stage filtering starch separator according to claim 1, characterized in that: The tail ends of the filter inner tanks of the first filter chamber (27) and the second filter chamber (30) are both provided with slag outlets respectively connected to the first slag outlet (15) and the second slag outlet (16); the tail ends of the first slag outlet (15) and the second slag outlet (16) are connected to a slag outlet pipe via a connecting flange.

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