A starch drying and sizing apparatus

Abstract

The present application relates to the technical field of starch processing, and particularly relates to a starch drying and screening device, which comprises a plurality of drying boxes and an air inlet pipe one, the plurality of drying boxes are arranged in sequence from top to bottom, two adjacent drying boxes are communicated through a plurality of screen holes, the size of the screen holes decreases from top to bottom in sequence, and the top of the air inlet pipe one penetrates through the plurality of drying boxes from bottom to top and extends to the bottom of the uppermost drying box. By adopting the mode of blowing material, the material is subjected to circulating fluidized movement in the drying box, so that the hot air flow and the material are uniformly and fully contacted, the material is rapidly and effectively dried, and the fluidized drying mode can make the material be in a suspended state for a long time and multiple times. On the basis of the fluidized drying of the material, the material is repeatedly passed through the plurality of screen holes by using the mode of continuous movement of the material, so that the shielding and hindering of the large-particle material to the small-particle material can be avoided, and the screening effect is facilitated to be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of starch processing, and particularly relates to a starch drying and screening device. BACKGROUND

[0002] As an important raw material in food, medicine and chemical industries, the processing efficiency and quality of starch directly affect the downstream industry. In the production process of starch, drying and screening are core links. The traditional process generally adopts a step-by-step operation mode of "drying first and then screening". This mode has significant drawbacks. First, starch with a certain moisture content is prone to clumping during drying, which prevents the starch from being directly dried and requires regrinding, which undoubtedly increases production costs and reduces efficiency. Second, during drying, the starch particles block each other, preventing water evaporation and causing uneven starch temperature, which affects drying uniformity. Third, the fine powder generated during screening needs to be dried again due to uneven humidity, which not only prolongs the process but also causes partial gelatinization of heat-sensitive starch particles, reducing product quality. SUMMARY

[0003] To solve the above technical problems, the present application provides a starch drying and screening device, which adopts the following specific technical scheme:

[0004] The starch drying and screening device comprises a plurality of drying boxes and an air inlet pipe one. The plurality of drying boxes are arranged from top to bottom. Adjacent two drying boxes are connected through a plurality of screen holes. The size of the screen holes decreases from top to bottom. The top of the air inlet pipe one passes through the plurality of drying boxes from bottom to top and extends to the bottom of the uppermost drying box. The air inlet pipe one is connected with each drying box through a plurality of air inlets located at the bottom of each drying box.

[0005] The uppermost drying box is provided with an air exhaust pipe for exhausting air and a bulk material structure for feeding material into the drying box.

[0006] Further, the bottom of each drying box is provided with a collection chamber. The collection chamber is connected with the drying box, and the connection position of the collection chamber and the drying box is blocked by a sealing plate. The bottom of each collection chamber is provided with a discharge pipe for discharging material.

[0007] The sealing plates are connected through a connecting rod, and the connecting rod is driven to move up and down by a gas cylinder.

[0008] Further, the bulk material structure comprises a base and a plurality of annular rings. The plurality of annular rings are located outside the base, and the plurality of annular rings are arranged in sequence. The base and the innermost annular ring, and the adjacent two annular rings have a slit for bulk material.

[0009] Further, transmission wheels for transmission are arranged between the base and the adjacent annular ring, and between two adjacent annular rings, and the transmission wheels are supported by the support body.

[0010] Further, two stop edges are arranged on the outer wall of the base and the inner and outer walls of each annular ring, and the two stop edges are arranged in an up-down distribution and are used for limiting the transmission wheel.

[0011] Further, a rolling wheel is arranged at the bottom of each transmission wheel, the rolling wheel is used for rolling the material in the gap, and the rolling wheel is fixedly connected with the support body through a connecting plate.

[0012] The rolling wheel is composed of two cone wheels, and the two cone wheels are used in cooperation with the base and the annular ring or the adjacent two annular rings on both sides of the gap.

[0013] Further, the bulk material structure further comprises a buckle cover buckled on the outer side of the plurality of annular rings, and the support body is fixedly connected with the buckle cover, a vertical pipe is arranged in communication on the buckle cover, an inclined feeding channel is arranged on the vertical pipe, and the opening of the feeding channel is closed after the feeding is completed.

[0014] An air inlet pipe two is arranged in the middle of the vertical pipe, the air inlet pipe two penetrates through the vertical pipe and the base, a gas guide disc is arranged at the bottom opening position of the air inlet pipe two, and a plurality of auxiliary air holes are arranged on the outer wall of the air inlet pipe two on the inner side of the vertical pipe.

[0015] Further, a core column connected with the gas guide disc is arranged in the air inlet pipe two, a fixing cover is arranged at the top of the air inlet pipe two, the fixing cover is fixed opposite to the feeding channel, the air inlet pipe two rotates on the fixing cover, and a gas supply pipe is arranged in communication on the fixing cover.

[0016] The position of the core column on the fixing cover is adjustably arranged.

[0017] The beneficial effects of the present application are as follows:

[0018] By adopting the mode of blowing material, the material is subjected to circulating fluidized movement in the drying box, so that the hot gas flow and the material are uniformly and fully contacted, the material is rapidly and effectively dried, and the fluidized drying mode can make the material be in a suspended state for a long time and many times; by utilizing the continuous movement of the material on the basis of the fluidized drying of the material, the material passes through the screen holes many times and repeatedly, so that the shielding and hindering of the large-particle material to the small-particle material can be avoided, and the screening effect is facilitated; by utilizing the movement mode of the fluidized material, the drying work and the screening work are combined, so that the material processing effect is improved, and the working mode of one machine with multiple functions is realized, meanwhile, the material in each drying box can be independently subjected to fluidized movement, so that the screened material can be dried, and the drying work is continuously performed in the whole screening process of the material; since the drying and the screening of the material are simultaneously performed, the screened material does not need to be subjected to secondary drying treatment, and the drying step is simplified. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0020] Figure 1 is a structural schematic diagram of the present application;

[0021] Figure 2 is Figure 1 is a sectional view structural schematic diagram;

[0022] Figure 3 is Figure 2 is a partially enlarged structural schematic diagram of A in the present application;

[0023] Figure 4 is a structural schematic diagram of the bulk material structure in the embodiments of the present application;

[0024] Figure 5 is Figure 4 is a bottom view structural schematic diagram;

[0025] Figure 6 is a schematic diagram of the arrangement mode of the plurality of annular rings in the embodiments of the present application;

[0026] Figure 7 is Figure 6 is a sectional view structural schematic diagram;

[0027] Figure 8 is a structural schematic diagram of the transmission wheel and the rolling wheel in the embodiments of the present application;

[0028] Figure 9 This is an enlarged structural diagram of the annular portion in an embodiment of the present invention.

[0029] Figure label:

[0030] 1. Drying oven; 2. Sieve holes; 3. Air inlet pipe one; 4. Air inlet; 5. Exhaust pipe; 6. Collection chamber; 7. Sealing plate; 8. Discharge pipe; 9. Connecting rod; 10. Cylinder; 11. Bulk material structure; 12. Base; 13. Ring; 14. Support body; 15. Transmission wheel; 16. Edge retainer; 17. Roller roller; 18. Connecting plate; 19. Cover; 20. Vertical pipe; 21. Feeding channel; 22. Air inlet pipe two; 23. Air guide plate; 24. Secondary air hole; 25. Core column; 26. Fixing cover; 27. Air supply pipe. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] In the description of this invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0034] like Figures 1 to 9 As shown, a starch drying and sieving device of the present invention includes several drying boxes 1 and an air inlet pipe 3. The several drying boxes 1 are arranged sequentially from top to bottom. Adjacent drying boxes 1 are connected by several sieve holes 2, and the size of the sieve holes 2 decreases sequentially from top to bottom. The top of the air inlet pipe 3 passes through several drying boxes 1 sequentially from bottom to top and extends to the bottom of the uppermost drying box 1. The air inlet pipe 3 is connected to each drying box 1 through several air inlets 4 located at the bottom of each drying box 1.

[0035] The uppermost drying box 1 is provided with an exhaust duct 5 for exhausting and a scattering structure 11 for feeding materials into the drying box 1.

[0036] In the present application, the adjacent two drying boxes 1 have a large contact area, so that the screen holes 2 between the adjacent two drying boxes 1 have a larger distribution area, that is, the internal space of each drying box 1 can be in a conical shape as shown in the figure. Figure 2 Specifically, the drying box 1 is in the shape of a bucket, and the lower drying box 1 can be buckled at the bottom of the upper drying box 1, so that the materials in the drying box 1 can be conveniently fluidized. Since the materials are screened from the inside of the uppermost drying box 1, the size of the screen holes 2 can be gradually reduced from top to bottom, so that the step-by-step screening work can be realized. The air inlet pipe 3 passes through each drying box 1, and the air inlet 4 on each drying box 1 can realize the effect of transmitting high-temperature gas flow to the lowest point of each drying box 1, and conveniently make the gas flow from bottom to top in the middle of the drying box 1. The air inlet 4 on the uppermost drying box 1 can be directly arranged at the top of the air inlet pipe 3.

[0037] In use, the materials are diffused into the uppermost drying box 1 by the scattering structure 11, and the materials are gathered to the lowest point of the uppermost drying box 1. The high-temperature gas flow is introduced into each drying box 1 through the air inlet 4 of the air inlet pipe 3. The gas flow in the uppermost drying box 1 blows the materials upward, and the materials diffuse to all directions after rising to the highest point, and then slide along the inner wall of the drying box 1 to the vicinity of the air inlet 4 and rise again by the gas flow. Thus, the materials are fluidized and dried in the drying box 1. The smaller particles of the materials in the drying process can fall into the adjacent drying box 1 through the screen holes 2, and the gas flow in the adjacent drying box 1 also fluidizes the part of the materials. Thus, the materials are screened and dried from the inside of the uppermost drying box 1, and the smaller particles of the materials can be naturally screened out and fall down through the screen holes 2, realizing the screening and separation of the materials through multiple drying boxes 1, and the fluidized drying of the materials in each drying box 1.

[0038] It should be noted that the fluidization and screening of the materials in the drying box 1 are carried out simultaneously, which can conveniently remove the smaller particles of the materials and avoid blocking, and can also conveniently circulate and suspend the materials for drying. Since the exhaust duct 5 is installed on the uppermost drying box 1, the high-temperature gas flow can flow upward in the drying boxes 1, so that the large particles of the materials blocked in the screen holes 2 can be blown away by the gas flow, thereby improving the flowability of the screen holes 2.

[0039] By adopting the blowing material method, the material is in circulating fluidized movement in the drying box 1, so that the hot gas flow and the material are uniformly and fully contacted, the material is conveniently and quickly and effectively dried, and the fluidized drying method can make the material in the suspended state for a long time and multiple times; on the basis of the fluidized drying of the material, the material is repeatedly passed through the screen holes 2 by using the continuous movement of the material, so that the shielding and hindering of the large particle material to the small particle material can be avoided, and the screening effect can be conveniently improved; by using the movement method of the material fluidization, the drying work and the screening work are combined, so that the material processing effect is improved, and the one-machine multi-function working method is realized, and since the material in each drying box 1 can independently perform fluidized movement, the screened material can be dried separately, so that the drying work continues in the whole screening process of the material; since the drying and screening of the material are synchronous, the screened material does not need to be dried again, and the drying step is simplified.

[0040] Further, each drying box 1 is provided with a collecting chamber 6, the collecting chamber 6 is communicated with the drying box 1, and the communication position of the collecting chamber 6 and the drying box 1 is blocked by the sealing plate 7, and the bottom of each collecting chamber 6 is provided with a discharge pipe 8 for discharging material;

[0041] Each sealing plate 7 is connected by a connecting rod 9, and the connecting rod 9 is pushed up and down by a gas cylinder 10;

[0042] When the material in the drying box 1 completes the screening and drying work, the material needs to be discharged in time, in order to realize this function, by using the material fluidized movement method, the sealing plate 7 blocks the communication position of the drying box 1 and the collecting chamber 6 in the normal processing process of the material, at this time the material cannot enter the collecting chamber 6, when the material processing is completed, the connecting rod 9 is moved by the gas cylinder 10, so that the sealing plate 7 on each drying box 1 moves towards the inside of the collecting chamber 6 or moves to the inside of the drying box 1, so that the sealing plate 7 no longer blocks the communication position of the drying box 1 and the collecting chamber 6, the material can naturally enter the collecting chamber 6 and be discharged through the discharge pipe 8, the screened material in each drying box 1 is output through the independent discharge pipe 8, and when the material is discharged, the gas cylinder 10 drives each sealing plate 7 to reset through the connecting rod 9.

[0043] Further, the bulk material structure 11 includes a base 12 and a plurality of annular rings 13, the plurality of annular rings 13 are located on the outside of the base 12, and the plurality of annular rings 13 are arranged in sequence, and the base 12 and the innermost annular ring 13 and the adjacent two annular rings 13 have a slit for bulk material;

[0044] By utilizing the arrangement of the base 12 and several rings 13, multiple narrow slits can be formed from the inside out. When the material is conveyed to the base 12 and the innermost ring 13 or between two adjacent rings 13, the material will fall downward through the gaps. At this time, the narrow slits will cause the material to form multiple rings and a material curtain arranged in sequence. This can facilitate the uniform introduction of the material and avoid the material from blocking each other when it is introduced in a pile. It is convenient to achieve the diffusion treatment of the material during feeding. In addition, this structure will also prevent the material from sticking together and clumping in the drying chamber 1, and prevent the clumped material from directly blocking the air inlet 4 and causing the equipment to malfunction.

[0045] Furthermore, there are transmission wheels 15 for transmission between the base 12 and the adjacent ring 13, and between two adjacent rings 13. The transmission wheels 15 are supported by the support body 14.

[0046] The transmission wheel 15 is used to drive the base 12 and the adjacent ring 13, and the two adjacent rings 13, thereby enabling relative movement between the base 12 and the adjacent ring 13, and the two adjacent rings 13. That is, the two side walls of the slit move synchronously relative to each other. In this way, the blocky material can be broken down, and the blocky material can be prevented from continuously accumulating on the bulk material structure 11. At the same time, this movement mode can facilitate the even distribution of a large amount of material at the slit position, so that all areas of the circular slit can realize the material distribution function. The support body 14 can be used to support the transmission wheel 15, and in order to prevent the material from accumulating on the support body 14, the support body 14 can be set in a conical shape.

[0047] In some embodiments, a slit can be provided on both sides of the slit. Figure 9 The inclined ridges shown are oriented in opposite directions on both sides of the slit. This allows for the guidance of materials and the destruction of blocky materials when the two walls of the slit move relative to each other. Because the two walls of the slit move relative to each other and the ridges on both walls are oriented in opposite directions, the ridges on both walls can achieve a shearing destruction effect on the blocky materials.

[0048] Furthermore, two retaining edges 16 are provided on the outer wall of the base 12 and on the inner and outer walls of each ring 13. The two retaining edges 16 are distributed vertically and are used to limit the transmission wheel 15.

[0049] Part of the drive wheel 15 is located between the two retaining edges 16. The two retaining edges 16 can support the drive wheel 15. Thus, several rings 13 can support each other and move synchronously in opposite directions through several drive wheels 15, without the need to set up a separate support structure for each ring 13. In order to avoid material deposition on the retaining edges 16, the retaining edges 16 can be set at an angle.

[0050] Further, the bottom of each transmission wheel 15 is provided with a rolling wheel 17, which is used for rolling the material in the slit, and the rolling wheel 17 is fixedly connected with the support body 14 through a connecting plate 18;

[0051] The rolling wheel 17 is composed of two cone gears, which are used in cooperation with the abutment 12 and the circular ring 13 or the adjacent two circular rings 13 on both sides of the slit.

[0052] When the two side walls of the slit move relatively, the two side walls will drive the two cone gears on the rolling wheel 17 to rotate synchronously and reversely, thereby achieving the rolling and discharging effect of the material on the two side walls moving reversely, and facilitating the acceleration of the material bulk work.

[0053] Further, the bulk material structure 11 further comprises a buckle cover 19 buckled outside the plurality of circular rings 13, and the support body 14 is fixedly connected with the buckle cover 19, and a vertical pipe 20 is communicated on the buckle cover 19, and an inclined feeding channel 21 is arranged on the vertical pipe 20, and the opening of the feeding channel 21 is closed after completing the feeding.

[0054] The middle part of the vertical pipe 20 is provided with an air inlet pipe two 22, and the air inlet pipe two 22 penetrates through the vertical pipe 20 and the abutment 12, and the bottom opening position of the air inlet pipe two 22 is provided with a gas guide disc 23, and a plurality of auxiliary air holes 24 are formed on the outer wall of the air inlet pipe two 22 inside the vertical pipe 20.

[0055] The vertical pipe 20 penetrates through the uppermost drying box 1, and the buckle cover 19 and the feeding channel 21 are located on the inner and outer sides of the uppermost drying box 1 respectively, and the material can be introduced into the slit in the buckle cover 19 through the feeding channel 21 and the vertical pipe 20; the high-temperature gas flow in the air inlet pipe two 22 can be diffused horizontally around through the bottom opening of the air inlet pipe two 22 and the gas guide disc 23, at this time, the gas flow can blow and preliminarily dry the material in the bulk state, and the blown material can fall towards the inner wall position of the uppermost drying box 1, thereby helping the material to quickly form a fluidized state when feeding; the high-temperature gas flow in the air inlet pipe two 22 can be introduced into the vertical pipe 20 through the plurality of auxiliary air holes 24, at this time, since the feeding channel 21 completing feeding is closed, the high-temperature gas flow in the vertical pipe 20 will flow downward and pneumatically blow and feed the material in the buckle cover 19 and the slit, thereby helping the material to pass through the slit and discharge.

[0056] The air inlet pipe two 22 is connected with the abutment 12, and the air inlet pipe two 22 can directly drive the abutment 12 to rotate, and the plurality of circular rings 13 can be synchronously moved by the plurality of transmission wheels 15, and the air inlet pipe two 22 can be powered by a motor.

[0057] Further, the air inlet pipe two 22 is provided with a core column 25 connected with the air guide disc 23, the top of the air inlet pipe two 22 is provided with a fixing cover 26, the fixing cover 26 is fixed opposite to the feeding channel 21, the air inlet pipe two 22 rotates on the fixing cover 26, and the fixing cover 26 is provided with a gas supply pipe 27 in communication;

[0058] The position of the core column 25 on the fixing cover 26 is adjustably arranged.

[0059] Since the air inlet pipe two 22 is in a moving state, if the gas supply pipe 27 is directly connected with the air inlet pipe two 22, the gas supply pipe 27 will also be in a moving state, so it cannot be connected with external air pump and other structures, therefore, by using the fixing cover 26, the static gas supply pipe 27 can realize the air supply work to the dynamic air inlet pipe two 22, and the fixing cover 26 can support the air guide disc 23 through the core column 25; the core column 25 and the fixing cover 26 can be connected through bolts or other ways, when the position of the core column 25 on the fixing cover 26 changes, the distance between the air guide disc 23 and the bottom opening of the air inlet pipe two 22 changes, thereby improving the exhaust capacity of the bottom of the air inlet pipe two 22, and facilitating the synchronous adjustment of the exhaust capacity of the auxiliary air hole 24.

[0060] The above is only the preferred embodiment of the present application, it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, can make a number of improvements and modifications, these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A starch drying and sizing apparatus, characterized by, The device comprises several drying boxes and an air inlet pipe I, the drying boxes are arranged from top to bottom, the adjacent drying boxes are connected through sieve holes, the size of the sieve holes decreases from top to bottom, the top of the air inlet pipe I extends to the bottom of the uppermost drying box through the drying boxes from bottom to top, and the air inlet pipe I is connected with the drying boxes through air inlets arranged at the bottom of the drying boxes; The uppermost drying box is provided with an air outlet pipe for air exhaust and a scattering structure for feeding materials into the drying box; The bottom of each drying box is provided with a collecting chamber, the collecting chamber is connected with the drying box, and the connection position of the collecting chamber and the drying box is blocked by a sealing plate, the bottom of each collecting chamber is provided with a discharge pipe for discharging materials; The sealing plates are connected through connecting rods, and the connecting rods move up and down through air cylinders; The scattering structure comprises a base and several annular rings, the annular rings are arranged outside the base, and the annular rings are arranged in sequence, the base and the innermost annular ring, and the adjacent annular rings have slits for scattering materials.

2. A starch drying and sizing apparatus as claimed in claim 1, wherein, The base and the adjacent annular rings, and the adjacent annular rings have transmission wheels for transmission, and the transmission wheels are supported by support bodies.

3. A starch drying and sizing apparatus as claimed in claim 2, wherein, Two stoppers are arranged on the outer wall of the base, the inner and outer walls of each annular ring, and the stoppers are arranged in an up-down distribution and used for limiting the transmission wheels.

4. A starch drying and sizing apparatus as claimed in claim 3, wherein, The bottom of each transmission wheel is provided with a rolling wheel, the rolling wheel is used for rolling and pressing the materials in the slits, and the rolling wheel is fixedly connected with the support body through a connecting plate; The rolling wheel is composed of two bevel gears, and the bevel gears are used in cooperation with the base and the annular ring or the adjacent annular rings on both sides of the slits.

5. A starch drying and sizing apparatus as claimed in claim 4, wherein, The scattering structure further comprises a buckle cover arranged outside the annular rings, the support body is fixedly connected with the buckle cover, a vertical pipe is arranged in communication on the buckle cover, an inclined feed channel is arranged on the vertical pipe, and the opening of the feed channel is closed after feeding is completed. An air inlet pipe II is arranged in the middle of the vertical pipe, the air inlet pipe II passes through the vertical pipe and the base, a gas guide disc is arranged at the bottom opening position of the air inlet pipe II, and a plurality of auxiliary air holes are arranged on the outer wall of the air inlet pipe II inside the vertical pipe.

6. A starch drying and sizing apparatus as claimed in claim 5, wherein, A core column connected with the gas guide disc is arranged in the air inlet pipe II, a fixed cover is arranged at the top of the air inlet pipe II, the fixed cover is fixed opposite to the feed channel, the air inlet pipe II rotates on the fixed cover, and a gas supply pipe is arranged in communication on the fixed cover; The position of the core column on the fixed cover is adjustably arranged.

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