A grading treatment hydrocyclone for sweet potato starch production

Abstract

The utility model belongs to sweet potato starch production equipment field especially, a kind of grading treatment hydrocyclone for sweet potato starch production, it includes processing support, the top of processing support is equipped with multiple equipment ports, the inboard of multiple equipment ports is fixedly installed with cyclone shell, the side of multiple cyclone shells is equipped with pump body, multiple cyclone shells are sequentially graded from left to right.The double-inlet symmetric feeding of utility model setting can offset the single-side impact force of single inlet, make starch milk form more uniform spiral descending flow along the inner wall of cyclone shell, avoid center vortex deviation, improve the efficiency and quality of starch separation, and with the increase of processing times, the aperture of stainless steel filter screen reduces, can better intercept impurities and larger block, simultaneously, the rotation of servo motor driving scraper and conveying spiral shaft in equipment can scrape and break down the impurities on the surface of stainless steel filter screen, discharge through discharge pipe, greatly improve the separation effect.

Description

Technical Field

[0001] This utility model relates to the technical field of sweet potato starch production equipment, and in particular to a grading hydrocyclone for sweet potato starch production. Background Technology

[0002] The grading hydrocyclone for sweet potato starch production is a core piece of equipment that utilizes the principle of centrifugal sedimentation to achieve starch grading and purification. Its core function is to finely separate crude starch slurry during sweet potato starch processing. During operation, the starch slurry enters the hydrocyclone chamber tangentially under high pressure, forming a high-speed rotating vortex. Under the action of centrifugal force, substances of different densities are separated. The denser pure starch particles are thrown against the chamber wall and discharged with the bottom flow, becoming refined starch. The less dense impurities such as protein, fiber, and water gather at the center of the vortex and are discharged with the overflow, thus completing the grading and purification process.

[0003] However, most existing equipment uses a single inlet feed, which generates unilateral impact force, resulting in an uneven flow field formed by the starch slurry within the vortex shell. The central vortex is prone to deflection, which disrupts the separation area between starch particles and impurities. Some starch particles cannot be effectively thrown towards the wall, thus reducing separation efficiency. Furthermore, the filter screen pore size of existing equipment is fixed and cannot be adjusted for multi-stage processing, making it difficult to completely intercept impurities and lumps of different sizes. At the same time, impurities easily adhere to the filter screen surface, and the lack of an effective cleaning mechanism leads to filter screen blockage. This not only requires frequent shutdowns for cleaning but also affects the continuity and separation effect of subsequent separation processes. Utility Model Content

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A grading hydrocyclone for sweet potato starch production includes a processing support. The top of the processing support has multiple equipment ports, and a hydrocyclone shell is fixedly installed on the inner side of each of the multiple equipment ports. A pump body is provided on one side of each of the multiple hydrocyclone shells. The multiple hydrocyclone shells are graded sequentially from left to right. A protective shell is fixedly installed on the inner side of each of the multiple hydrocyclone shells. A drive shaft is rotatably installed on the bottom of each of the multiple protective shells. A conveying screw shaft is fixedly installed at the bottom end of each of the multiple drive shafts.

[0006] Specifically, a feed pipe is fixedly installed on the input end of the leftmost pump body, a grading pipe is fixedly installed on the input end of the remaining pump bodies, and a conveying pipe is fixedly installed on the output end of multiple pump bodies. The function of the feed pipe is to convey the starch-containing raw material to the pump body, and then the pump body pressurizes it and sends it into the vortex shell, so that the starch milk can be injected into the vortex shell at a relatively fast speed.

[0007] Specifically, each of the multiple cyclone shells has a removable cover fixedly installed on its top, which facilitates subsequent maintenance by staff and cleaning of the inner wall of the cyclone shell.

[0008] Specifically, annular inlet pipes are fixedly fitted on the outer sides of multiple cyclone shells, and two inlet heads are fixedly connected to the two output ends of the multiple annular inlet pipes. The multiple inlet heads extend into the corresponding cyclone shells, and conveying connectors are fixedly installed at the input ends of the multiple annular inlet pipes. The other ends of the multiple conveying pipes are fixedly connected to the corresponding conveying connectors. The shape of the inlet heads is designed to be streamlined, which can make the material enter the cyclone shell more smoothly and reduce resistance and energy loss.

[0009] Specifically, overflow screens are fixedly installed on the inner side of multiple cyclone shells, conical chambers are fixedly installed at the bottom of multiple cyclone shells, and stainless steel filter screens are fixedly installed on the inner side of multiple conical chambers. The pore size of multiple overflow screens and multiple stainless steel filter screens decreases with the number of stages along the grading direction. Each conical chamber has an outlet at its bottom. The other end of multiple grading pipes is fixedly connected to the corresponding outlet. The main function of the stainless steel filter screen is to further filter the material, ensuring that only starch particles that meet the particle size requirements can pass through, thereby improving the purity of the starch. In the material processed by the previous cyclone shell, larger impurities have been removed, and the remaining material contains relatively small starch particles, so a stainless steel filter screen with a smaller pore size is needed for further screening.

[0010] Specifically, each of the multiple cyclone shells has an overflow port on one side. An overflow discharge head is fixedly installed on the outside of the last overflow port, and overflow pipes are fixedly installed on the outside of the remaining overflow ports. The other ends of the multiple overflow pipes are fixedly connected to the corresponding grading pipes. The function of the overflow discharge head is to discharge the qualified starch product after the last grading process from the equipment. The remaining overflow ports are connected to overflow pipes, and the other ends of the overflow pipes are connected to the corresponding grading pipes. In this way, the material overflowing from the previous stages can be sent back to the grading process for further processing, thereby improving the starch recovery rate.

[0011] Specifically, two miniature pneumatic vibrators are fixedly installed on the outside of each of the multiple conical silos. By generating high-frequency vibrations, the miniature pneumatic vibrators can effectively facilitate the smooth discharge of materials from the conical silos, ensuring the normal operation of the equipment.

[0012] Specifically, multiple arc-shaped guide plates are fixedly installed on the inner side of each cyclone shell. The function of the arc-shaped guide plates is to guide the flow direction of the material, so that the material forms a specific rotating flow field inside the cyclone shell, enhances the effect of centrifugal force, and thus improves the classification efficiency.

[0013] Specifically, multiple protective housings have motor slots on their inner sides, and servo motors are fixedly installed on the top inner walls of the multiple motor slots. The output shafts of the multiple servo motors are fixedly connected to their corresponding drive shafts. Multiple protective housings have multiple evenly distributed heat dissipation holes on their outer sides, and the multiple heat dissipation holes are connected to their corresponding motor slots.

[0014] Specifically, three scrapers are fixedly installed on the outer side of each of the multiple drive shafts, and slag discharge pipes are fixedly installed on the discharge ends of each of the multiple stainless steel filter screens. Each of the multiple slag discharge pipes extends into a corresponding conical chamber. The scrapers can scrape the material on the stainless steel filter screen to prevent the material from accumulating on the stainless steel filter screen and affecting the filtration effect.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting up symmetrical feeding through dual inlets, the unilateral impact force of a single inlet can be offset, so that the starch milk forms a more uniform spiral downward flow along the inner wall of the vortex shell, avoiding the deviation of the central vortex, improving the efficiency and quality of starch separation. Furthermore, as the number of processing times increases, the pore size of the stainless steel filter screen decreases, which can better intercept impurities and larger lumps. At the same time, the servo motor in the equipment drives the scraper and the conveying screw shaft to rotate, which can scrape off and break up the impurities on the surface of the filter screen and convey them through the slag discharge pipe, greatly improving the separation effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a grading hydrocyclone for sweet potato starch production proposed in this utility model.

[0017] Figure 2 This is a side view of the three-dimensional structure of a grading hydrocyclone for sweet potato starch production proposed in this utility model.

[0018] Figure 3 This is a three-dimensional cross-sectional view of a grading hydrocyclone for sweet potato starch production proposed in this utility model.

[0019] Figure 4 This is a three-dimensional cross-sectional view of a single-stage hydrocyclone for grading sweet potato starch production, as proposed in this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram showing the cyclone shell, cap, annular inlet pipe, conveying connector, inlet head, overflow net, arc guide plate, and conical chamber of a grading hydrocyclone for sweet potato starch production proposed in this utility model.

[0021] Figure 6This utility model presents a three-dimensional structural breakdown diagram of a grading hydrocyclone for sweet potato starch production, comprising a stainless steel filter screen, slag discharge pipe, conveying spiral shaft, scraper, drive shaft, protective shell, heat dissipation holes, and servo motor.

[0022] In the diagram: 1. Processing support; 2. Pump body; 3. Feed pipe; 4. Swirl shell; 5. Cover; 6. Annular inlet pipe; 7. Conveying connector; 8. Inlet head; 9. Conveying pipe; 10. Overflow screen; 11. Arc-shaped guide plate; 12. Conical bin; 13. Stainless steel filter screen; 14. Slag discharge pipe; 15. Conveying screw shaft; 16. Scraper; 17. Drive shaft; 18. Protective shell; 19. Heat dissipation holes; 20. Servo motor; 21. Grading pipe; 22. Overflow pipe; 23. Miniature pneumatic vibrator; 24. Overflow discharge head. Detailed Implementation

[0023] Reference Figure 1-6 A grading hydrocyclone for sweet potato starch production includes a processing support 1. The top of the processing support 1 has multiple equipment ports. A hydrocyclone shell 4 is fixedly installed inside each of the multiple equipment ports. A pump body 2 is provided on one side of each of the multiple hydrocyclone shells 4. The multiple hydrocyclone shells 4 are graded sequentially from left to right. A protective shell 18 is fixedly installed inside each of the multiple hydrocyclone shells 4. A drive shaft 17 is rotatably installed at the bottom of each of the multiple protective shells 18. A conveying screw shaft 15 is fixedly installed at the bottom end of each of the multiple drive shafts 17.

[0024] In this embodiment, a feed pipe 3 is fixedly installed on the input end of the leftmost pump body 2, and a grading pipe 21 is fixedly installed on the input ends of the remaining pump bodies 2. A conveying pipe 9 is fixedly installed on the output ends of multiple pump bodies 2. The function of the feed pipe 3 is to convey the starch-containing raw material to the pump body 2, and then the pump body 2 pressurizes it and sends it into the vortex shell 4, so that the starch milk can be injected into the vortex shell 4 at a relatively fast speed.

[0025] In this embodiment, a detachable cover 5 is fixedly installed on the top of each of the multiple swirling shells 4, which facilitates subsequent maintenance by staff and cleaning of the inner wall of the swirling shell 4.

[0026] In this embodiment, annular inlet pipes 6 are fixedly fitted on the outer sides of multiple cyclone shells 4. Two inlet heads 8 are fixedly connected to the two output ends of the multiple annular inlet pipes 6. The multiple inlet heads 8 extend into the corresponding cyclone shells 4. Conveying connectors 7 are fixedly installed at the input ends of the multiple annular inlet pipes 6. The other ends of the multiple conveying pipes 9 are fixedly connected to the corresponding conveying connectors 7. The shape of the inlet head 8 is designed to be streamlined, which can make the material enter the cyclone shell 4 more smoothly and reduce resistance and energy loss.

[0027] In this embodiment, overflow nets 10 are fixedly installed on the inner side of multiple cyclone shells 4, conical chambers 12 are fixedly installed on the bottom of multiple cyclone shells 4, and stainless steel filter screens 13 are fixedly installed on the inner side of multiple conical chambers 12. The pore size of multiple overflow nets 10 and multiple stainless steel filter screens 13 decreases with the increase of the number of stages along the grading direction. The bottom of multiple conical chambers 12 is provided with an outlet. The other end of multiple grading pipes 21 is fixedly connected to the corresponding outlet. The main function of stainless steel filter screens 13 is to further filter the material to ensure that only starch particles that meet the particle size requirements can pass through, thereby improving the purity of starch. In the material processed by the previous stage cyclone shell 4, larger impurities have been removed. The remaining material has relatively small starch particles, so stainless steel filter screens 13 with smaller pore sizes are needed for further screening.

[0028] In this embodiment, an overflow port is provided on one side of each of the multiple vortex shells 4. An overflow discharge head 24 is fixedly installed on the outside of the last overflow port, and an overflow pipe 22 is fixedly installed on the outside of the remaining overflow ports. The other ends of the multiple overflow pipes 22 are respectively fixedly connected to the corresponding grading pipes 21. The function of the overflow discharge head 24 is to discharge the qualified starch product after the last grading process from the equipment. The remaining overflow ports are connected to the overflow pipes 22, and the other ends of the overflow pipes 22 are connected to the corresponding grading pipes 21. In this way, the material overflowing from the previous stages can be sent back to the grading process for further processing, thereby improving the starch recovery rate.

[0029] In this embodiment, two miniature pneumatic vibrators 23 are fixedly installed on the outer side of each of the multiple conical bins 12. The miniature pneumatic vibrators 23 generate high-frequency vibrations, which can effectively promote the smooth discharge of materials in the conical bins 12 and ensure the normal operation of the equipment.

[0030] In this embodiment, multiple arc-shaped guide plates 11 are fixedly installed on the inner side of multiple swirl shells 4. The function of the arc-shaped guide plates 11 is to guide the flow direction of the material, so that the material forms a specific rotating flow field in the swirl shell 4, enhances the effect of centrifugal force, and thus improves the classification efficiency.

[0031] In this embodiment, a motor slot is provided on the inner side of each of the multiple protective shells 18, and a servo motor 20 is fixedly installed on the top inner wall of each of the multiple motor slots. The output shafts of the multiple servo motors 20 are respectively fixedly connected to the corresponding drive shafts 17. A multiple evenly distributed heat dissipation holes 19 are provided on the outer side of each of the multiple protective shells 18, and the multiple heat dissipation holes 19 are respectively connected to the corresponding motor slots.

[0032] In this embodiment, three scrapers 16 are fixedly installed on the outer side of each of the multiple drive shafts 17, and slag discharge pipes 14 are fixedly installed on the discharge ends of each of the multiple stainless steel filter screens 13. The multiple slag discharge pipes 14 extend into corresponding conical chambers 12. The scrapers 16 can scrape the material on the stainless steel filter screens 13 to prevent the material from accumulating on the stainless steel filter screens 13 and affecting the filtration effect.

[0033] Working Principle: During sweet potato starch production, the operator connects the starch slurry delivery pipe to the feed pipe 3, then starts the equipment. The starch slurry, pressurized by the pump, enters the annular inlet pipe 6 at a high pressure of 0.8 to 1.2 MPa through the delivery pipe 9 and delivery connector 7. It then enters the vortex shell 4 through two symmetrically arranged inlet heads 8 via tangential injection. This dual-inlet symmetrical feeding counteracts the unilateral impact of a single inlet, causing the starch slurry to form a more uniform spiral downward flow along the inner wall of the vortex shell 4. To avoid central vortex deviation, multiple arc-shaped guide plates 11 reduce direct impact between the starch slurry and the inner wall, minimizing the accumulation of potato residue fibers at the inlet and preventing starch particles from breaking due to impact. The starch slurry forms a high-speed rotating flow field within the conical cavity, generating centrifugal force far exceeding gravity. Under centrifugal force, the denser starch particles in the starch slurry are thrown towards the inner wall of the vortex shell 4, spiraling downwards along the wall. After being filtered by the stainless steel filter screen 13, they enter the grading pipeline through the discharge port at the bottom of the conical chamber 12. In the process 21, the low-density potato residue, protein, and water in the starch milk are less affected by centrifugal force and gather in the central area of ​​the cyclone shell 4, forming an upward vortex. This vortex enters the overflow pipe 22 from the overflow port on one side. The overflow pipe 22 is then connected to the grading pipe 21, and the material is sent to the next stage cyclone shell 4 for secondary processing. As the number of processing times increases, the pore size of the stainless steel filter screen 13 decreases, thereby intercepting impurities and larger lumps. The servo motor 20 in the equipment drives the drive shaft 17 to rotate, which in turn drives the three corresponding scrapers 16 and the conveying screw shaft 15 to rotate. After the multiple scrapers 16 scrape the impurities from the surface of the corresponding stainless steel filter screen 13, the impurities are broken and conveyed by the rotation of the serrated spiral blades on the conveying screw shaft 15, and finally discharged through the slag discharge pipe 14. After multi-stage separation, the coarse starch milk is discharged through the discharge port at the bottom of the last stage cyclone shell 4, while the lighter starch liquid is discharged through the overflow discharge head 24 on one side of the last stage cyclone shell 4, completing the grading process.

[0034] The technological advancements of this invention compared to existing technologies are as follows: By setting up symmetrical dual-inlet feeding, the unilateral impact force of a single inlet can be offset, allowing the starch milk to form a more uniform spiral downward flow along the inner wall of the vortex shell 4, avoiding central vortex deviation, and improving the efficiency and quality of starch separation. Furthermore, as the number of processing cycles increases, the pore size of the stainless steel filter screen 13 decreases, enabling better interception of impurities and larger lumps. Simultaneously, the servo motor 20 in the equipment drives the scraper 16 and the conveying screw shaft 15 to rotate, which can scrape off and break up impurities on the surface of the stainless steel filter screen 13 and convey them through the slag discharge pipe 14, greatly improving the separation effect.

Claims

1. A grading hydrocyclone for sweet potato starch production, characterized in that, The system includes a processing support (1), which has multiple equipment ports on its top. A vortex housing (4) is fixedly installed on the inner side of each of the multiple equipment ports. A pump body (2) is provided on one side of each of the multiple vortex housings (4). The multiple vortex housings (4) are graded from left to right. A protective shell (18) is fixedly installed on the inner side of each of the multiple swirling shells (4), and a drive shaft (17) is rotatably installed on the bottom of each of the multiple protective shells (18). A conveying screw shaft (15) is fixedly installed at the bottom of each of the multiple drive shafts (17).

2. The grading hydrocyclone for sweet potato starch production according to claim 1, characterized in that, The leftmost pump body (2) has a feed pipe (3) fixedly installed on its input end, the remaining pump bodies (2) have a grading pipe (21) fixedly installed on their input ends, and the output ends of the multiple pump bodies (2) have a conveying pipe (9) fixedly installed on their output ends.

3. The grading hydrocyclone for sweet potato starch production according to claim 2, characterized in that, Each of the multiple swirling shells (4) has a removable cover (5) fixedly installed on its top.

4. A grading hydrocyclone for sweet potato starch production according to claim 3, characterized in that, Annular inlet pipes (6) are fixedly fitted on the outer side of multiple swirling shells (4). Two inlet heads (8) are fixedly connected to the two output ends of the multiple annular inlet pipes (6). The multiple inlet heads (8) extend into the corresponding swirling shells (4). A conveying connector (7) is fixedly installed at the input end of the multiple annular inlet pipes (6). The other end of the multiple conveying pipes (9) is fixedly connected to the corresponding conveying connector (7).

5. A grading hydrocyclone for sweet potato starch production according to claim 4, characterized in that, An overflow net (10) is fixedly installed on the inner side of each of the multiple swirling shells (4). A conical chamber (12) is fixedly installed on the bottom of each of the multiple swirling shells (4). A stainless steel filter (13) is fixedly installed on the inner side of each of the multiple conical chambers (12). The aperture of the multiple overflow nets (10) and the multiple stainless steel filter (13) decreases along the grading direction as the number of grades increases. A discharge port is opened at the bottom of each of the multiple conical chambers (12). The other end of each of the multiple grading pipes (21) is fixedly connected to the corresponding discharge port.

6. A grading hydrocyclone for sweet potato starch production according to claim 5, characterized in that, An overflow port is provided on one side of each of the multiple swirling shells (4). An overflow discharge head (24) is fixedly installed on the outside of the last overflow port. An overflow pipe (22) is fixedly installed on the outside of the remaining overflow ports. The other end of the multiple overflow pipes (22) is fixedly connected to the corresponding grade pipe (21).

7. A grading hydrocyclone for sweet potato starch production according to claim 6, characterized in that, Two miniature pneumatic vibrators (23) are fixedly installed on the outside of each of the multiple conical chambers (12).

8. A grading hydrocyclone for sweet potato starch production according to claim 7, characterized in that, Multiple arc-shaped guide plates (11) are fixedly installed on the inner side of multiple swirling shells (4).

9. A grading hydrocyclone for sweet potato starch production according to claim 8, characterized in that, Multiple protective housings (18) have motor slots on their inner sides. Servo motors (20) are fixedly installed on the top inner walls of the multiple motor slots. The output shafts of the multiple servo motors (20) are fixedly connected to the corresponding drive shafts (17). Multiple uniformly distributed heat dissipation holes (19) are opened on the outer sides of the multiple protective housings (18). The multiple heat dissipation holes (19) are connected to the corresponding motor slots.

10. A grading hydrocyclone for sweet potato starch production according to claim 9, characterized in that, Three scrapers (16) are fixedly installed on the outer side of multiple drive shafts (17), and slag discharge pipes (14) are fixedly installed on the discharge ends of multiple stainless steel filter screens (13). The multiple slag discharge pipes (14) extend into corresponding conical chambers (12).

Images