Roller dryer for producing modified starch

Abstract

The utility model discloses a roller dryer for producing modified starch, which relates to the technical field of dryers and comprises a drying box, a feeding hopper is mounted at the top of the drying box, two ends of the top of an inner cavity of the drying box are respectively connected with a first roller and a second roller, and a driving component is arranged on the outer side of the drying box. The front end of the driving assembly is connected with the rear ends of the first roller and the second roller, electric push rods are installed at the ends, close to the first roller and the second roller, of the two sides of an inner cavity of the drying box, scrapers are installed at the output ends of the two electric push rods, and collecting frames are installed at the two ends of the bottom of the inner cavity of the drying box. According to the utility model, through the cooperative arrangement of the collecting frame, the first bevel gear, the grinding cylinder and the transmission assembly, when starch blocks enter the collecting frame, the grinding cylinder and the inner side wall of the collecting frame act together, so that the blocks are further fully ground into powder, and the influence of the blocks on the next processing procedure is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dryers, in particular to a roller dryer for producing modified starch. Background Art

[0002] In order to improve the performance of starch and expand its application range, physical, chemical or enzymatic treatment is used to introduce new functional groups into starch molecules or change the size of starch molecules and the properties of starch particles, thereby changing the natural properties of starch such as gelatinization temperature, thermal viscosity and its stability, freeze-thaw stability, gel strength, film-forming property, transparency, etc., making it more suitable for certain application requirements. This kind of starch that has undergone secondary processing and changed its properties is collectively called modified starch. At present, roller dryers are often needed in the processing of modified starch. Roller dryers are a kind of continuous operating equipment that uses rotating rollers to dry the liquid material attached to the outer wall of the roller by heat conduction.

[0003] The Chinese utility model patent announcement number CN209711402U discloses a roller drying and maturation equipment, including a frame, a roller, a feeding funnel, a scraper, etc. The second cylinder and the third cylinder are arranged in parallel, and the right sides of the second cylinder and the third cylinder are respectively connected to the right side wall of the inner surface of the frame, and the left sides of the second cylinder and the third cylinder are respectively fixedly connected with the fourth ball seat and the fifth ball seat, and the smear plate is hinged to the fourth ball seat and the fifth ball seat. The cross-section of the smear plate is ram-horn-shaped, and the longitudinal length of the smear plate matches the length of the roller. The equipment can adjust the adhesion thickness of the fluid or slurry falling on the surface of the roller and achieve the purpose of uniformly applying the attached slurry. However, the scraper in the above equipment scrapes the dried starch material from the roller. Due to the concentration ratio of the starch liquid or starch slurry, it is easy to cause the dried material to form a few lumps, and the scraper cannot scrape the lumps into powder during the scraping process, which reduces the qualified degree of the starch product. Utility Model Content

[0004] In order to improve the problem that the scraper in the above-mentioned equipment scrapes the dried starch material off the roller, the concentration ratio of the starch liquid or starch slurry easily causes the dried material to form a few lumps, and the scraper cannot scrape the lumps into powder during the scraping process, thereby reducing the qualification level of the starch product. The utility model provides a roller dryer for the production of modified starch.

[0005] The utility model provides a roller dryer for the production of modified starch, which adopts the following technical scheme:

[0006] A roller dryer for producing modified starch comprises a drying box, wherein a feeding funnel is installed on the top of the drying box, and two ends of the top of the inner cavity of the drying box are respectively connected to a first roller and a second roller, a driving assembly is arranged on the outside of the drying box, and the front end of the driving assembly is respectively connected to the rear ends of the first roller and the second roller, electric push rods are installed on both ends of the inner cavity of the drying box close to the first roller and the second roller, and scrapers are installed on the output ends of two groups of the electric push rods, and collecting frames are installed on both ends of the bottom of the inner cavity of the drying box, and the inner cavities of the two groups of the collecting frames are connected to rolling drums, and the ends of the two groups of the rolling drums are connected to first bevel gears, and a transmission assembly is arranged between the two groups of the first bevel gears, and a material taking port is opened on one side of the two groups of the collecting frames close to the center of the drying box, and a material blocking assembly is arranged on the end of the two groups of the material taking ports facing away from the collecting frame.

[0007] By adopting the above technical scheme, the driving component can drive the first roller and the second roller to rotate synchronously in opposite directions. At this time, the starch raw material falls into the surface of the first roller and the second roller through the feed funnel, and the starch raw material attached to the surface of the first roller and the second roller is dried, which accelerates the speed of the raw material forming a film and improves the drying efficiency of the roller dryer. When the starch raw material attached to the surface of the first roller and the second roller passes through the position of the scraper, the dried starch raw material is scraped into the interior of the collecting frame under the action of the scraper. At the same time, the first bevel gear is driven to rotate by the transmission component, and the rotation of the first bevel gear drives the rolling drum to rotate. At this time, when the starch block that has been dried and has not been scraped into powder enters the collecting frame, the rolling drum and the inner side wall of the collecting frame work together to further fully grind the block and turn it into powder, thereby avoiding affecting the next processing step due to the presence of the block.

[0008] Optionally, the driving assembly includes a shell, which is installed on the outside of the drying box, a stepper motor is installed in the inner cavity of the shell, a first rotating shaft is installed at the power output end of the stepper motor, a first gear is sleeved on the outer wall of the first rotating shaft, a second gear is meshed and connected at the left end of the first gear, a second rotating shaft is sleeved in the inner cavity of the second gear, a front end of the second rotating shaft is fixedly connected to the rear end of the first roller, and the front end of the first rotating shaft is fixedly connected to the rear end of the second roller.

[0009] By adopting the above technical solution, when the stepper motor is working, the first shaft drives the first gear to rotate, the rotation of the first gear drives the second gear to rotate, and the rotation of the second gear drives the second shaft to rotate, thereby driving the first roller and the second roller to rotate in opposite directions.

[0010] Optionally, a door is hinged on the surface of the drying box.

[0011] By adopting the above technical solution, it is convenient to open the door and take out the dried starch.

[0012] Optionally, the inner walls of the first roller and the second roller are connected to heating tubes, a temperature sensor is installed on the inner top wall of the drying box, a controller is installed on the outside of the drying box, the output end of the temperature sensor is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the heating tube.

[0013] By adopting the above technical solution, the first roller and the second roller can be heated by the heating tube, and the temperature of the inner cavity of the drying box is sensed by the temperature sensor and the data is transmitted to the controller. When the temperature is greater than the set value, the heating tube is turned off by the controller.

[0014] Optionally, a guide assembly is provided between the scraper and the drying box, the guide assembly includes a guide rod, the guide rod is installed on the side of the scraper away from the center of the drying box, one end of the guide rod away from the scraper extends out of the drying box, and a guide hole matching the guide rod is opened on the surface of the drying box.

[0015] By adopting the above technical solution, when the scraper moves, it can drive the guide rod to slide in the guide hole, so that the scraper is more stable when moving.

[0016] Optionally, the transmission assembly includes a driving motor, which is installed on the inner side of the collection frame at the right end. A driving shaft is installed at the power output end of the driving motor, and a driving gear is installed at the end of the driving shaft away from the driving motor. The top of the driving gear is meshed and connected with a driven gear, and the inner cavity of the driven gear is sleeved with a driven shaft. Both ends of the driven gear respectively pass through the side walls of the two collection frames and are rotatably connected. Both ends of the driven shaft located in the collection frame are fixedly connected with second bevel gears, and the two groups of the second bevel gears and the two groups of the first bevel gears are meshed with each other.

[0017] By adopting the above technical solution, when the driving motor is working, the driving shaft drives the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the driven shaft to rotate, the driven shaft drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, and then the milling drum can be driven to rotate, so as to grind the block starch into powder.

[0018] Optionally, the material baffle assembly includes two groups of baffles, which are respectively installed on one side of the inner cavity of the drying box close to the collection frame, the bottoms of the two groups of baffles are connected with blocks, the inner bottom wall of the drying box is provided with a slot that is plugged into the block, and the tops of the two groups of baffles are connected with pull rods.

[0019] By adopting the above technical solution, when the baffle needs to be disassembled, the staff holds the pull rod, and the pull rod drives the baffle to move upward. When the baffle moves, it drives the card block to move upward until the card block is separated from the card slot.

[0020] Optionally, scrapers are installed on the inner side walls of the two groups of collecting frames, and the ends of the two groups of scrapers close to the center of the collecting frames are in close contact with the peripheral side walls of the rolling drum.

[0021] By adopting the above technical solution, the starch on the rolling drum can be scraped off by the scraper.

[0022] In summary, the present invention has at least one of the following beneficial effects:

[0023] (1) Through the coordinated arrangement of the collecting frame, the first bevel gear, the grinding drum and the transmission assembly, when the starch lumps enter the collecting frame, the grinding drum and the inner wall of the collecting frame work together to further grind the lumps and turn them into powder, thereby avoiding affecting the next processing step due to the presence of the lumps.

[0024] (2) Through the coordinated arrangement of the temperature sensor, the heating tube, the first roller, the second roller and the driving assembly, the heating tube heats the first roller and the second roller, and drives the first roller and the second roller to rotate synchronously in opposite directions through the driving assembly, thereby accelerating the speed at which the raw material forms a film and improving the overall drying efficiency of the roller dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0027] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0028] Figure 3 For the utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0029] Figure 4 For the utility model Figure 1 Schematic diagram of the structure at point B in the middle.

[0030] In the figure: 1, feeding funnel; 2, temperature sensor; 3, heating tube; 4, first roller; 5, scraper; 6, electric push rod; 7, collecting frame; 8, scraper; 9, first bevel gear; 10, rolling drum; 11, drying box; 12, material taking port; 13, pull rod; 14, guide assembly; 1401, guide hole; 1402, guide rod; 15, second roller; 16, door body; 17, drive assembly; 1701, first rotating shaft; 1702, stepping motor; 1703, first gear; 1704, second rotating shaft; 1705, second gear; 1706, housing; 18, material blocking assembly; 1801, baffle; 1802, block; 1803, slot; 19, transmission assembly; 1901, driven gear; 1902, driven shaft; 1903, second bevel gear; 1904, driving gear; 1905, driving shaft; 1906, driving motor. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 The utility model is described in further detail.

[0032] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 The utility model provides an embodiment: a roller dryer for modified starch production, comprising a drying box 11, a feeding funnel 1 is fixedly installed on the top of the drying box 11, and the starch raw material can be passed into the inner cavity of the drying box 11 through the feeding funnel 1, and a door body 16 is hinged on the surface of the drying box 11. The door body 16 is convenient to open and take out the dried starch.

[0033] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2The two ends of the top of the inner cavity of the drying box 11 are rotatably connected with the first roller 4 and the second roller 15 respectively. A driving assembly 17 is arranged on the outside of the drying box 11. The front end of the driving assembly 17 is connected with the rear ends of the first roller 4 and the second roller 15 respectively. The driving assembly 17 includes a shell 1706. The shell 1706 is installed on the outside of the drying box 11. A stepper motor 1702 is fixedly installed in the inner cavity of the shell 1706. The power output end of the stepper motor 1702 is fixedly installed with a first rotating shaft 1701. The outer wall of the first rotating shaft 1701 is fixedly sleeved with a first gear 1703. The left end of the first gear 1703 is meshedly connected with the second gear 1705. The inner cavity of the second gear 1705 is sleeved with a second rotating shaft 1704. The front end of the second rotating shaft 1704 is fixedly connected to the rear end of the first roller 4, and the front end of the first rotating shaft 1701 is fixedly connected to the rear end of the second roller 15. When the stepper motor 1702 is working, it drives the first gear 1703 to rotate through the first shaft 1701. The rotation of the first gear 1703 drives the second gear 1705 to rotate. When the second gear 1705 rotates, it drives the second shaft 1704 to rotate, thereby driving the first roller 4 and the second roller 15 to rotate in opposite directions.

[0034] Please refer to the attached figure in the instruction manual Figure 1 The inner walls of the first roller 4 and the second roller 15 are connected with a plurality of heating tubes 3, the inner top wall of the drying box 11 is installed with a temperature sensor 2, and the outer side of the drying box 11 is installed with a controller, the output end of the temperature sensor 2 is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the heating tube 3. The first roller 4 and the second roller 15 can be heated by the heating tube 3, and the temperature of the inner cavity of the drying box 11 is sensed by the temperature sensor 2 and the data is transmitted to the controller. When the temperature is greater than the set value, the heating tube 3 is turned off by the controller.

[0035] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 Electric push rods 6 are installed on both sides of the inner cavity of the drying box 11, close to the first roller 4 and the second roller 15. Scrapers 5 are installed on the output ends of the two sets of electric push rods 6. A guide assembly 14 is arranged between the scraper 5 and the drying box 11. The guide assembly 14 includes a guide rod 1402, which is installed on the side of the scraper 5 away from the center of the drying box 11. The end of the guide rod 1402 away from the scraper 5 extends out of the drying box 11. The surface of the drying box 11 is provided with a guide hole 1401 that matches the guide rod 1402. When the scraper 5 moves, it can drive the guide rod 1402 to slide in the guide hole 1401, so that the scraper 5 is more stable when moving.

[0036] Please refer to the attached figure in the instruction manual Figure 1The two ends of the bottom of the inner cavity of the drying box 11 are both installed with collecting frames 7, the inner cavities of the two sets of collecting frames 7 are both rotatably connected with the rolling drum 10, and the inner side walls of the two sets of collecting frames 7 are both installed with scrapers 8, and the ends of the two sets of scrapers 8 close to the center of the collecting frames 7 are closely attached to the peripheral side walls of the rolling drum 10. Therefore, the starch on the rolling drum 10 can be scraped off by the scrapers 8.

[0037] Please refer to the attached figure in the instruction manual Figure 1 and Figure 4 The ends of the two groups of rolling drums 10 are connected with the first bevel gears 9, and a transmission assembly 19 is arranged between the two groups of first bevel gears 9. The transmission assembly 19 includes a driving motor 1906, and the driving motor 1906 is installed on the inner side of the right end collection frame 7. A driving shaft 1905 is installed at the power output end of the driving motor 1906, and a driving gear 1904 is installed at the end of the driving shaft 1905 away from the driving motor 1906. The top of the driving gear 1904 is meshed and connected with a driven gear 1901, and the inner cavity of the driven gear 1901 is sleeved with a driven shaft 1902. The two ends of the driven gear 1901 are respectively penetrated and rotatably connected to the side walls of the two collection frames 7. The two ends of the driven shaft 1902 located in the collection frame 7 are fixedly connected with second bevel gears 1903, and the two groups of second bevel gears 1903 and the two groups of first bevel gears 9 are meshed with each other. When the driving motor 1906 is working, it drives the driving gear 1904 to rotate through the driving shaft 1905. The driving gear 1904 drives the driven gear 1901 to rotate. The driven gear 1901 drives the driven shaft 1902 to rotate. The driven shaft 1902 drives the second bevel gear 1903 to rotate. The second bevel gear 1903 drives the first bevel gear 9 to rotate, which can drive the grinding drum 10 to rotate, grind the block starch into powder.

[0038] Please refer to the attached figure in the instruction manual Figure 1 and Figure 3 , the two groups of collection frames 7 are provided with a material taking port 12 on one side close to the center of the drying box 11, and the two groups of material taking ports 12 are provided with a material blocking assembly 18 on one end away from the collection frame 7, and the material blocking assembly 18 includes two groups of baffles 1801, which are respectively installed on one side of the inner cavity of the drying box 11 close to the collection frame 7, and the bottoms of the two groups of baffles 1801 are fixedly connected with a card block 1802, and the inner bottom wall of the drying box 11 is provided with a card slot 1803 that is plugged and matched with the card block 1802, and the tops of the two groups of baffles 1801 are fixedly connected with a pull rod 13. When the baffle 1801 needs to be disassembled, the staff holds the pull rod 13, and the pull rod 13 drives the baffle 1801 to move upward, and when the baffle 1801 moves, it drives the card block 1802 to move upward until the card block 1802 is separated from the card slot 1803.

[0039] Working principle: When the dryer is used, an external power supply is connected, and the heating tube 3 is turned on through the controller to heat the first roller 4 and the second roller 15. The temperature sensor 2 detects the surface temperature of the first roller 4 and the second roller 15 and feeds it back to the controller. When the temperature is too high, the heating tube 3 is turned off, and then the stepper motor 1702 is started. When the stepper motor 1702 is working, the first gear 1703 is driven to rotate through the first rotating shaft 1701, and the rotation of the first gear 1703 drives the second gear 1705 to rotate, and the rotation of the second gear 1705 drives the second gear 1706 to rotate. The rotating shaft 1704 rotates, thereby driving the first roller 4 and the second roller 15 to rotate synchronously in opposite directions. At this time, the starch raw material falls onto the surface of the first roller 4 and the second roller 15 through the feeding funnel 1, and the starch raw material attached to the surface of the first roller 4 and the second roller 15 is dried, thereby accelerating the speed at which the raw material forms a film and improving the drying efficiency of the roller dryer. When the starch raw material attached to the surface of the first roller 4 and the second roller 15 passes through the position of the scraper 5, the dried starch raw material is scraped into the interior of the collecting frame 7 under the action of the scraper 5.

[0040] At the same time, the driving motor 1906 is turned on through the controller. When the driving motor 1906 is working, it drives the driving gear 1904 to rotate through the driving shaft 1905. When the driving gear 1904 rotates, it drives the driven gear 1901 to rotate. The driven gear 1901 drives the driven shaft 1902 to rotate. The driven shaft 1902 drives the second bevel gear 1903 to rotate. The second bevel gear 1903 drives the first bevel gear 9 to rotate. The first bevel gear 9 drives the rolling drum 10 to rotate. At this time, when the starch lumps that have been dried and not scraped into powder enter the collecting frame 7, the rolling drum 10 works together with the inner wall of the collecting frame 7 to further grind the lumps and turn them into powder, thereby avoiding affecting the next processing step due to the presence of the lumps.

[0041] When drying is completed, the door body 16 is opened. At this time, the staff holds the pull rod 13 to pull the baffle 1801 upward. When the baffle 1801 moves upward, it drives the block 1802 to move upward until the block 1802 is separated from the slot 1803, so that the baffle 1801 can be disassembled conveniently, so that the dried starch can be taken out through the material taking port 12.

[0042] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A roller dryer for producing modified starch, comprising a drying box (11), characterized in that: A feeding hopper (1) is installed on the top of the drying box (11), and the two ends of the top of the inner cavity of the drying box (11) are respectively connected to a first roller (4) and a second roller (15). A driving assembly (17) is arranged on the outside of the drying box (11), and the front end of the driving assembly (17) is respectively connected to the rear ends of the first roller (4) and the second roller (15). Electric push rods (6) are installed on both sides of the inner cavity of the drying box (11) at one end close to the first roller (4) and the second roller (15). The two sets of electric push rods (6) are A scraper (5) is installed at each output end, and collecting frames (7) are installed at both ends of the bottom of the inner cavity of the drying box (11). The inner cavities of the two groups of collecting frames (7) are connected to rollers (10), and the ends of the two groups of rollers (10) are connected to first bevel gears (9). A transmission assembly (19) is arranged between the two groups of first bevel gears (9). A material taking port (12) is opened on one side of the two groups of collecting frames (7) close to the center of the drying box (11), and a material blocking assembly (18) is arranged on one end of the two groups of collecting ports (12) away from the collecting frame (7).

2. A roller dryer for producing modified starch according to claim 1, characterized in that: The driving assembly (17) comprises a housing (1706), wherein the housing (1706) is mounted on the outside of the drying box (11); a stepper motor (1702) is mounted in the inner cavity of the housing (1706); a first rotating shaft (1701) is mounted on the power output end of the stepper motor (1702); a first gear (1703) is sleeved on the outer wall of the first rotating shaft (1701); a second gear (1705) is meshedly connected to the left end of the first gear (1703); a second rotating shaft (1704) is sleeved in the inner cavity of the second gear (1705); a front end of the second rotating shaft (1704) is fixedly connected to the rear end of the first roller (4); and a front end of the first rotating shaft (1701) is fixedly connected to the rear end of the second roller (15).

3. The roller dryer for producing modified starch according to claim 1, characterized in that: A door body (16) is hingedly connected to the surface of the drying box (11).

4. The roller dryer for producing modified starch according to claim 1, characterized in that: The inner walls of the first roller (4) and the second roller (15) are both connected to a heating tube (3), the inner top wall of the drying box (11) is installed with a temperature sensor (2), the outer side of the drying box (11) is installed with a controller, the output end of the temperature sensor (2) is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the heating tube (3).

5. The roller dryer for producing modified starch according to claim 1, characterized in that: A guide assembly (14) is provided between the scraper (5) and the drying box (11), the guide assembly (14) comprising a guide rod (1402), the guide rod (1402) being mounted on a side of the scraper (5) away from the center of the drying box (11), an end of the guide rod (1402) away from the scraper (5) extending out of the drying box (11), and a guide hole (1401) matching the guide rod (1402) being provided on the surface of the drying box (11).

6. The roller dryer for producing modified starch according to claim 1, characterized in that: The transmission assembly (19) comprises a driving motor (1906), wherein the driving motor (1906) is mounted on the inner side of the collection frame (7) at the right end, a driving shaft (1905) is mounted on the power output end of the driving motor (1906), a driving gear (1904) is mounted on the end of the driving shaft (1905) facing away from the driving motor (1906), the top of the driving gear (1904) is meshingly connected with a driven gear (1901), the inner cavity of the driven gear (1901) is sleeved with a driven shaft (1902), the two ends of the driven gear (1901) are respectively penetrated and rotatably connected to the side walls of the two collection frames (7), the two ends of the driven shaft (1902) located in the collection frame (7) are fixedly connected with the second bevel gear (1903), and the two groups of the second bevel gears (1903) and the two groups of the first bevel gears (9) are meshing with each other.

7. The roller dryer for producing modified starch according to claim 1, characterized in that: The material baffle assembly (18) comprises two groups of baffles (1801), the two groups of baffles (1801) being respectively installed on one side of the inner cavity of the drying box (11) close to the collecting frame (7), the bottoms of the two groups of baffles (1801) being connected to a clamping block (1802), the inner bottom wall of the drying box (11) being provided with a clamping slot (1803) for plugging with the clamping block (1802), and the tops of the two groups of baffles (1801) being connected to a pull rod (13).

8. The roller dryer for producing modified starch according to claim 1, characterized in that: The inner side walls of the two groups of collecting frames (7) are both installed with scrapers (8), and the ends of the two groups of scrapers (8) close to the center of the collecting frames (7) are in close contact with the peripheral side walls of the rolling drum (10).

Images