Raw material drying equipment for edible oil production

Abstract

The utility model relates to the technical field of edible oil processing, concretely is a kind of raw material drying equipment for edible oil production, including screw conveyor, still including gradient vertical spiral drying blow cylinder being communicated with the lower end of discharge port, oblique material guiding and discharging device being communicated with the lower end of gradient vertical spiral drying blow cylinder, drive mechanism being located on oblique material guiding and discharging device, driving shaft being transmission cooperation with drive mechanism, multiple stirring blades being connected to the outer wall of driving shaft, scattering subassembly being located in the outer wall of driving shaft and being located inside discharge port, multiple support components being longitudinally spaced apart and being arranged in the inner wall of gradient vertical spiral drying blow cylinder;The equipment can break up caked raw material, prevent uneven heating, improve drying uniformity;Provide up and down segmented hot air, upper half high-temperature surface water, lower half low-temperature internal humidity, overcome the limitation of single temperature heating mode, solve the problem of surface drying and internal humidity, provide qualified drying raw material for edible oil production.

Description

Technical Field

[0001] This utility model relates to the field of edible oil processing technology, specifically to a raw material drying device for edible oil production. Background Technology

[0002] As people's living standards improve, the variety of edible oils is becoming increasingly abundant, meeting the diverse needs of consumers. Currently, most edible oils on the market are made from various grains and seeds. These raw materials need to be dried before processing to remove excess moisture, laying the foundation for subsequent production processes.

[0003] A Chinese patent publication, CN217876990U, describes a raw material drying device for edible oil production. This device uses a spiral channel combined with a single-sided spiral heating element. While this expands the contact area with the raw material, in actual use, the material tends to clump and accumulate within the spiral channel, leading to uneven heating and affecting drying uniformity. Furthermore, the single-temperature heating mode cannot adjust the heating intensity according to the dehydration stage of the raw material (surface moisture and moisture hidden inside the material), easily resulting in over-drying of the surface while leaving residual internal moisture. Utility Model Content

[0004] The purpose of this invention is to provide a raw material drying device for edible oil production, which solves the problems of existing equipment where raw materials tend to clump and accumulate in the spiral channel, resulting in uneven heating and poor drying, and the single-temperature heating makes it difficult to adjust the temperature according to the dehydration stage of the raw materials, easily leading to surface dryness and internal moisture.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a raw material drying device for edible oil production, comprising a screw conveyor, a discharge port vertically connected to one end of the lower side of the screw conveyor, a gradient vertical screw drying drum connected to the lower end of the discharge port and used to provide hot air of different temperatures in upper and lower sections, an inclined material guiding and discharging device connected to the lower end of the gradient vertical screw drying drum, a drive mechanism disposed on the inclined material guiding and discharging device, a drive shaft that is driven and cooperates with the drive mechanism and extends sequentially to the interior of the gradient vertical screw drying drum and the discharge port, a plurality of stirring blades connected to the outer wall of the drive shaft and evenly distributed, a dispersing component disposed on the outer wall of the drive shaft and located inside the discharge port and used to disperse the agglomerated raw materials discharged from the discharge port, and a plurality of support components longitudinally spaced on the inner wall of the gradient vertical screw drying drum; the plurality of support components are rotatably connected to the drive shaft, and the plurality of stirring blades are spaced apart from the corresponding support components; the plurality of stirring blades are located inside the gradient vertical screw drying drum.

[0006] Furthermore, the dispersing assembly includes a plurality of dispersing rods arranged radially on the outer wall of the drive shaft and a fixing rod arranged interlaced with the plurality of dispersing rods on the inner wall of the discharge port.

[0007] Furthermore, the gradient vertical spiral drying cylinder includes a drying cylinder, a flange connection structure located at the upper end of the drying cylinder and connected to the discharge port, a high-temperature annular cavity and a low-temperature annular cavity arranged sequentially from top to bottom between the inner and outer sides of the drying cylinder, multiple air outlets respectively opened on the inner walls of the high-temperature annular cavity and the low-temperature annular cavity and communicating with the inner wall of the drying cylinder, two hot air generators located on the outer wall of the drying cylinder, and a dehumidification pipe communicating with the outer wall of the drying cylinder and located above the high-temperature annular cavity; the multiple air outlets are spirally distributed along the height direction of the drying cylinder, and the diameter of the air outlet of the high-temperature annular cavity is 8-10mm, and the diameter of the air outlet of the low-temperature annular cavity is 12-15mm; the air outlet port of one of the hot air generators is connected to the high-temperature annular cavity to provide hot air at 60℃-70℃, and the air outlet port of the other hot air generator is connected to the low-temperature annular cavity to provide hot air at 45℃-55℃.

[0008] Furthermore, the flange connection structure includes a sleeve that communicates with the upper side of the drying cylinder and is fitted onto the outer wall of the discharge port, a first flange located on the upper side of the sleeve, and a second flange located on the outer wall of the discharge port and tightly fitted to the upper side of the first flange; a fluororubber sealing gasket is provided between the first flange and the second flange, and they are fastened together by multiple bolts.

[0009] Furthermore, the support assembly includes a plurality of inclined rods arranged in a ring at intervals on the inner wall of the drying cylinder, and a bearing seat connected to one end of the plurality of inclined rods; the drive shaft and the bearing seat are rotatably connected by a deep groove ball bearing, and the angle between the inclined rods and the inner wall of the drying cylinder is 45-60°.

[0010] Furthermore, the inclined material discharge device includes a discharge chamber with one end open and an inclined material guide plate located inside the discharge chamber at the other end; the other end of the inclined material guide plate is connected to the lower side of the discharge chamber near the open end, and the angle between the inclined material guide plate and the bottom surface of the discharge chamber is 30-45°; the lower end of the drying cylinder is connected to the upper side of the discharge chamber; the drive shaft passes through the inclined material guide plate and is rotatably connected to the inclined material guide plate through a bearing.

[0011] Furthermore, the drive mechanism includes a motor located on the lower side of the discharge hopper, a rotating shaft connected to the output end of the motor and extending into the interior of the discharge hopper, and gears respectively located on the outer walls of the drive shaft and the rotating shaft and below the inclined guide plate; the two gears are meshed together; the upper end of the rotating shaft is rotatably connected to the lower side of the inclined guide plate through a bearing.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a raw material drying equipment for edible oil production. By using a dispersing component inside the discharge port, combined with the rotation of the drive shaft, it can break up clumps of raw materials, avoiding uneven heating caused by material accumulation and improving drying uniformity. At the same time, the gradient vertical spiral drying drum can provide hot air at different temperatures in the upper and lower sections. The high-temperature hot air in the upper part quickly removes the moisture attached to the surface of the raw materials, while the low-temperature hot air in the lower part deeply dries the moisture inside the raw materials. This replaces the single-temperature heating mode and effectively solves the problem of over-drying the surface of the raw materials while leaving residual moisture inside, providing qualified dried raw materials for subsequent edible oil production processes. Attached Figure Description

[0013] Figure 1 This is a cross-sectional schematic diagram of the raw material drying equipment for edible oil production according to this utility model; Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a system control block diagram of the raw material drying equipment for edible oil production according to this utility model.

[0014] In the diagram: 1. Screw conveyor; 2. Discharge port; 3. Inclined material guide discharge device; 4. Drying cylinder; 5. High-temperature annular cavity; 6. Air outlet; 7. Exhaust pipe; 8. Sleeve; 9. First flange; 10. Second flange; 11. Hot air generator; 12. Drive shaft; 13. Agitator blades; 14. Bearing housing; 15. Inclined rod; 16. Discharge bin; 17. Inclined guide plate; 18. Motor; 19. Rotary shaft; 20. Gear; 21. Low-temperature annular cavity; 22. Dispersing rod; 23. Fixing rod. Detailed Implementation

[0015] Please see Figure 1-3 A raw material drying device for edible oil production includes a screw conveyor 1, a discharge port 2 vertically connected to one lower end of the screw conveyor 1, a gradient vertical screw drying drum connected to the lower end of the discharge port 2 and used to provide hot air at different temperatures in upper and lower sections, an inclined material guiding and discharging device 3 connected to the lower end of the gradient vertical screw drying drum, a drive mechanism mounted on the inclined material guiding and discharging device 3, a drive shaft 12 that is driven and cooperates with the drive mechanism and extends sequentially into the gradient vertical screw drying drum and the discharge port 2, a plurality of stirring blades 13 connected to the outer wall of the drive shaft 12 and evenly distributed, a dispersing component mounted on the outer wall of the drive shaft 12 and located inside the discharge port 2 for dispersing agglomerated raw materials discharged from the discharge port 2, and a plurality of support components longitudinally spaced on the inner wall of the gradient vertical screw drying drum; the plurality of support components are rotatably connected to the drive shaft 12, and the plurality of stirring blades 13 are spaced apart from the corresponding support components; the plurality of stirring blades 13 are located inside the gradient vertical screw drying drum.

[0016] In this embodiment, the dispersing component includes a plurality of dispersing rods 22 that are fixed to the outer wall of the drive shaft 12 by welding and are distributed radially, and a fixing rod 23 that is fixed to the inner wall of the discharge port 2 by welding and is arranged alternately with the plurality of dispersing rods 22.

[0017] Specifically, when the radially distributed dispersing rods 22 rotate with the drive shaft 12, they cooperate with the fixed rods 23 arranged alternately on the inner wall of the discharge port 2 to generate shearing force, break up the clumps of raw materials, and prevent the clumps of raw materials from entering the drying cylinder 4 and affecting the drying uniformity.

[0018] In this embodiment, the gradient vertical spiral drying cylinder includes a drying cylinder 4, a flange connection structure located at the upper end of the drying cylinder 4 and connected to the discharge port 2, a high-temperature annular cavity 5 and a low-temperature annular cavity 21 arranged sequentially from top to bottom between the inner and outer sides of the drying cylinder 4, multiple air outlets 6 respectively opened on the inner walls of the high-temperature annular cavity 5 and the low-temperature annular cavity 21 and communicating with the inner wall of the drying cylinder 4, and two hot air generators 11 fixedly installed on the outer wall of the drying cylinder 4 by a bracket and welded to the outer wall of the drying cylinder 4. The exhaust pipe 7 is located above the high-temperature annular cavity 5; multiple air outlets 6 are spirally distributed along the height direction of the drying cylinder 4, and the diameter of the air outlets 6 in the high-temperature annular cavity 5 is 8-10mm, while the diameter of the air outlets 6 in the low-temperature annular cavity 21 is 12-15mm; the air outlet port of one hot air generator 11 is connected to the high-temperature annular cavity 5 to provide hot air at 60℃-70℃, and the air outlet port of another hot air generator 11 is connected to the low-temperature annular cavity 21 to provide hot air at 45℃-55℃.

[0019] The drying cylinder 4 has a double-walled structure. A high-temperature annular cavity 5 and a low-temperature annular cavity 21 are formed sequentially from top to bottom between the inner and outer walls by a partition plate. These two annular cavities are independent of each other. The height of the drying cylinder 4 can be designed based on the raw material throughput, initial moisture content, preset drying time, and hot air velocity to ensure thorough, uniform, and complete drying of the raw materials. Specifically, for raw materials with large throughput and high initial moisture content, a taller drying cylinder 4 is required to extend the vertical descent path of the raw materials and the contact time with the hot air. Combined with the hot air velocity (to prevent the raw materials from falling too quickly), the height matching ensures that the surface moisture of the raw materials is fully removed in the high-temperature zone and the internal moisture is deeply removed in the low-temperature zone, ultimately achieving a uniform and residue-free drying effect.

[0020] Specifically, the high-temperature annular cavity 5 and the low-temperature annular cavity 21 formed by the double-walled cylinder are independent of each other. With the help of two hot air generators 11 providing hot air at 60℃-70℃ and 45℃-55℃ respectively, segmented gradient drying is achieved. The upper part uses high temperature to quickly remove the moisture from the surface of the raw material, while the lower part uses low temperature to bake out the moisture inside the raw material. The segmented drying is more thorough. The spirally distributed air outlets 6, with different aperture designs (8-10mm in the high-temperature zone and 12-15mm in the low-temperature zone), can form a spiral hot air field inside the drying cylinder 4, extending the contact path between the hot air and the raw material. At the same time, it adapts to the air supply requirements of hot air at different temperatures, allowing the raw material to contact the hot air evenly. The exhaust pipe 7 can promptly discharge the hot and humid air generated during dehydration.

[0021] In this embodiment, the flange connection structure includes a sleeve 8 integrally formed or welded to the upper side of the drying cylinder 4 and sleeved on the outer wall of the discharge port 2, a first flange 9 welded to the upper side of the sleeve 8, and a second flange 10 welded to the outer wall of the discharge port 2 and tightly fitted to the upper side of the first flange 9; a fluororubber sealing gasket is provided between the first flange 9 and the second flange 10, and they are fastened together by multiple bolts.

[0022] Specifically, the clamped fluororubber sealing gasket can effectively prevent hot air from leaking from the connection point inside the drying cylinder 4, ensuring the utilization rate of hot air and the drying effect; the overall structure is easy to disassemble and maintain later. When the drying cylinder 4 or the discharge port 2 needs maintenance, the parts can be separated simply by removing the bolts, reducing maintenance costs.

[0023] In this embodiment, the support assembly includes a plurality of inclined rods 15 that are fixed to the inner wall of the drying cylinder 4 by welding and arranged in a ring at intervals, and a bearing seat 14 that is welded to one end of the plurality of inclined rods 15; the drive shaft 12 and the bearing seat 14 are rotatably connected by a deep groove ball bearing, and the angle between the inclined rods 15 and the inner wall of the drying cylinder 4 is 45-60°.

[0024] Specifically, multiple annularly spaced inclined rods 15 are welded to the inner wall of the drying cylinder 4 at an angle of 45-60°, which can distribute the force and provide a stable support foundation for the bearing seat 14. The support assembly, through the coordinated cooperation between the inclined rods 15 and the bearing seat 14, does not occupy too much space inside the drying cylinder 4, does not affect the falling of raw materials and the circulation of hot air, and can provide coaxiality support for the drive shaft 12.

[0025] In this embodiment, the inclined material discharge device 3 includes a discharge chamber 16 with one end open and an inclined material guide plate 17 welded and fixed to the other end inside the discharge chamber 16; the other end of the inclined material guide plate 17 is welded to the lower side of the discharge chamber 16 near the open end, and the angle between the inclined material guide plate 17 and the bottom surface of the discharge chamber 16 is 30-45°; the lower end of the drying cylinder 4 is connected to the upper side of the discharge chamber 16; the drive shaft 12 passes through the inclined material guide plate 17 and is rotatably connected to the inclined material guide plate 17 through a bearing.

[0026] The discharge hopper 16 has a cavity structure with one end open and the other end closed. Its upper end face has a communication port that matches the lower end of the drying cylinder 4. The lower end of the drying cylinder 4 is sealed and fixedly connected to the communication port through a flange to ensure that the dried raw material can fall completely into the discharge hopper 16.

[0027] Specifically, the inclined guide plate 17 is set at an angle of 30-45° to achieve natural material discharge by utilizing the gravity of the raw material itself; at the same time, the inclined guide plate 17 can not only guide the raw material to be discharged, but also provide auxiliary support for the drive shaft 12, thereby improving the stability of the drive shaft 12 operation and ensuring the working effect of the stirring blades 13 and the dispersing components.

[0028] In this embodiment, the drive mechanism includes a motor 18 fixedly mounted to the lower side of the discharge hopper 16 by bolts, a rotating shaft 19 coaxially fixedly connected to the output end of the motor 18 by a coupling and extending into the interior of the discharge hopper 16, and gears 20 fixedly sleeved on the outer walls of the drive shaft 12 and the rotating shaft 19 and located below the inclined guide plate 17; the two gears 20 are meshed and connected; the upper end of the rotating shaft 19 is rotatably connected to the lower side of the inclined guide plate 17 by bearings.

[0029] Specifically, through the cooperation of motor 18, rotating shaft 19, and two gears 20, the drive shaft 12 and its stirring blades 13 and dispersing rods 22 can be driven to operate synchronously, ensuring that the dispersing component disperses the lumpy raw materials and that the stirring blades 13 evenly stir the raw materials in the drying cylinder, thereby improving the full contact between the raw materials and the hot air and the uniformity of drying.

[0030] A controller is installed on the outer wall of the drying cylinder 4. The screw conveyor 1, the motor 18 and the two hot air generators 11 are all electrically connected to the controller.

[0031] It should be noted that the screw conveyor 1, motor 18, hot air generator 11 and controller are all commercially available and mature products that can be purchased directly. Their specific models and specifications can be selected according to the actual application scenario. The staff does not need to understand the specific structure and working principle of these components. As long as the purchased products can operate normally, it will not affect the specific implementation of this utility model. Therefore, they will not be described in detail here.

[0032] Working process and principle: When using this equipment to dry raw materials (soybeans, sesame, rapeseed, etc.) for edible oil production, the drive motor of the screw conveyor 1, the motor 18, and the two hot air generators 11 are started synchronously by the controller. After the raw materials are conveyed to the vertically connected discharge port 2 by the screw conveyor 1, the motor 18 drives the rotating shaft 19 to rotate. Through the meshing transmission of the two gears 20, the drive shaft 12 is driven to rotate synchronously. The dispersing component in the discharge port 2 works with the radially distributed dispersing rods 22 and the fixed rods 23 arranged alternately on the inner wall to disperse the clumps of raw materials and ensure that the raw materials enter the drying cylinder 4 evenly. Meanwhile, two hot air generators 11 respectively introduce segmented hot air at 60℃-70℃ and 45℃-55℃ into the high-temperature annular cavity 5 and low-temperature annular cavity 21 inside the drying cylinder 4. The hot air is evenly blown into the cylinder through the spirally distributed air outlets 6 on the inner wall of the drying cylinder 4 (8-10mm diameter in the high-temperature zone and 12-15mm diameter in the low-temperature zone). The stirring blades 13 on the drive shaft 12 rotate synchronously, continuously stirring the falling raw material to ensure full contact with the spiral hot air. This allows the upper part to quickly remove surface moisture from the raw material at high temperature, while the lower part is dried out of the interior moisture at low temperature. The segmented drying process is more thorough, and the hot and humid air generated during dehydration is promptly discharged through the exhaust pipe 7. The dried raw material naturally falls into the discharge bin 16 of the inclined guide discharge device 3 and is discharged through the opening end guided by the inclined guide plate 17. Throughout the drying process, the support components (inclined rod 15 and bearing seat 14) on the inner wall of the drying cylinder 4 provide stable rotational support for the drive shaft 12.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A raw material drying device for edible oil production, comprising a screw conveyor (1) and a discharge port (2) vertically connected to one end of the lower side of the screw conveyor (1), characterized in that, It also includes a gradient vertical spiral drying blower connected to the lower end of the discharge port (2) and used to provide hot air of different temperatures in the upper and lower sections; an inclined material guide discharge device (3) connected to the lower end of the gradient vertical spiral drying blower; a drive mechanism provided on the inclined material guide discharge device (3); a drive shaft (12) that is driven and cooperates with the drive mechanism and extends sequentially to the interior of the gradient vertical spiral drying blower and the discharge port (2); a plurality of stirring blades (13) connected to the outer wall of the drive shaft (12) and evenly distributed; a dispersing component provided on the outer wall of the drive shaft (12) and located inside the discharge port (2) for dispersing the agglomerated raw material discharged from the discharge port (2); and a plurality of support components arranged longitudinally at intervals on the inner wall of the gradient vertical spiral drying blower; the plurality of support components are rotatably connected to the drive shaft (12), and the plurality of stirring blades (13) are arranged at intervals with the corresponding support components; the plurality of stirring blades (13) are located inside the gradient vertical spiral drying blower.

2. The raw material drying equipment for edible oil production according to claim 1, characterized in that, The dispersing assembly includes multiple dispersing rods (22) arranged radially on the outer wall of the drive shaft (12) and a fixing rod (23) arranged interlaced with the multiple dispersing rods (22) on the inner wall of the discharge port (2).

3. The raw material drying equipment for edible oil production according to claim 1, characterized in that, The gradient vertical spiral drying cylinder includes a drying cylinder (4), a flange connection structure located at the upper end of the drying cylinder (4) and connected to the discharge port (2), a high-temperature annular cavity (5) and a low-temperature annular cavity (21) arranged alternately from top to bottom between the inner and outer sides of the drying cylinder (4), multiple air outlets (6) respectively opened on the inner walls of the high-temperature annular cavity (5) and the low-temperature annular cavity (21) and communicating with the inner wall of the drying cylinder (4), two hot air generators (11) located on the outer wall of the drying cylinder (4), and a high-temperature annular cavity (5) communicating with the outer wall of the drying cylinder (4) and located in the high-temperature annular cavity (5). The exhaust pipe (7) above the drying cylinder (4) has multiple air outlets (6) arranged in a spiral along the height direction of the drying cylinder (4), and the air outlet (6) of the high temperature annular cavity (5) has a diameter of 8-10 mm, and the air outlet (6) of the low temperature annular cavity (21) has a diameter of 12-15 mm; the air outlet of one of the hot air generators (11) is connected to the high temperature annular cavity (5) to provide hot air at 60℃-70℃, and the air outlet of the other hot air generator (11) is connected to the low temperature annular cavity (21) to provide hot air at 45℃-55℃.

4. The raw material drying equipment for edible oil production according to claim 3, characterized in that, The flange connection structure includes a sleeve (8) that communicates with the upper side of the drying cylinder (4) and is sleeved on the outer wall of the discharge port (2), a first flange (9) located on the upper side of the sleeve (8), and a second flange (10) located on the outer wall of the discharge port (2) and tightly fitted to the upper side of the first flange (9); a fluororubber sealing gasket is provided between the first flange (9) and the second flange (10), and they are fastened together by multiple bolts.

5. The raw material drying equipment for edible oil production according to claim 3, characterized in that, The support assembly includes a plurality of inclined rods (15) arranged in a ring at intervals on the inner wall of the drying cylinder (4) and a bearing seat (14) connected to one end of the plurality of inclined rods (15); the drive shaft (12) and the bearing seat (14) are rotatably connected by a deep groove ball bearing, and the angle between the inclined rods (15) and the inner wall of the drying cylinder (4) is 45-60°.

6. The raw material drying equipment for edible oil production according to claim 3, characterized in that, The inclined material discharge device (3) includes a discharge hopper (16) with one end open and an inclined material guide plate (17) located inside the discharge hopper (16) at the other end; the other end of the inclined material guide plate (17) is connected to the lower side of the discharge hopper (16) near the open end, and the angle between the inclined material guide plate (17) and the bottom surface of the discharge hopper (16) is 30-45°; the lower end of the drying cylinder (4) is connected to the upper side of the discharge hopper (16); the drive shaft (12) passes through the inclined material guide plate (17) and is rotatably connected to the inclined material guide plate (17) through a bearing.

7. The raw material drying equipment for edible oil production according to claim 6, characterized in that, The drive mechanism includes a motor (18) located on the lower side of the discharge hopper (16), a rotating shaft (19) connected to the output end of the motor (18) and extending into the discharge hopper (16), and gears (20) respectively located on the outer walls of the drive shaft (12) and the rotating shaft (19) and below the inclined guide plate (17); the two gears (20) are meshed and connected; the upper end of the rotating shaft (19) is rotatably connected to the lower side of the inclined guide plate (17) through a bearing.

Images