Grain fluidization drying and sorting integrated device and working method thereof

Abstract

The invention provides a grain fluidized drying and sorting integrated device and a working method thereof, and belongs to the technical field of particle material drying. The problem that according to an existing grain drying and sorting device, due to the fact that the sizes of fissured grains and normal grains have no large difference, the grains are difficult to screen through a sorting plate is solved. The system comprises a hot air generating device, a fluidized bed drying device, a dust removal device and a sorting device, the hot air generating device comprises a fan, a rotor flow meter and a temperature control device, the fan is connected with the temperature control device, and the rotor flow meter is arranged between the fan and the temperature control device; the fluidized bed drying device comprises an air inlet, an inner air chamber, a feeding port, an air distribution plate and a drying chamber, the air distribution plate is arranged in the inner air chamber, the air inlet is connected with the temperature control device, the upper space formed by the inner air chamber and the air distribution plate is the drying chamber, the feeding port is formed in the outer side of the drying chamber, the drying chamber is connected with the dust removal device, and the sorting device is connected with the dust removal device. The device is mainly used for grain drying and sorting.

Description

Technical Field

[0001] The invention belongs to the technical field of particle material drying, and in particular relates to a grain fluidized drying and sorting integrated device and a working method thereof. Background Art

[0002] Fluidized bed dryer is one of the common drying equipment. Due to its high heat transfer efficiency, it is widely used in the production process of agriculture, medicine, food and chemical industries. The moisture content of fresh grain particles is much higher than the safe moisture content for storage, so the grain particles need to be dried after harvest. However, during the drying process, the grain particles may crack due to inconsistent particle size and uneven drying, resulting in grain damage. Such cracked particles are called cracked grains, which have low strength and are easy to break during subsequent processing and transportation, resulting in broken rice, which seriously affects the nutrition and economy of grain products.

[0003] Currently available grain drying and sorting devices mostly use sorting plates with different apertures to screen the particle size, thereby filtering out broken particles or small-sized particles during the drying process. However, there is no significant difference in the size of cracked kidney grains and normal particles, and it is difficult to screen them through the sorting plates, resulting in cracked kidney grains being mixed in the dried grain particle group, affecting the drying quality and nutritional value of the dried grain. Summary of the invention

[0004] In view of this, the present invention aims to propose an integrated grain fluidized drying and sorting device and a working method thereof, so as to solve the problem that the existing grain drying and sorting device is difficult to screen through the sorting plate because the size of the cracked grains and normal grains is not significantly different.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A grain fluidized drying and sorting integrated device comprises a hot air flow generating device, a fluidized bed drying device, a dust removing device and a sorting device, wherein the hot air flow generating device comprises a fan, a rotor flow meter and a temperature control device, wherein the fan is connected to the temperature control device, and the rotor flow meter is arranged between the fan and the temperature control device, wherein the fluidized bed drying device comprises an air inlet, an inner air chamber, a material inlet, an air distribution plate and a drying chamber, wherein an air distribution plate is arranged in the inner air chamber, and an air inlet is installed in the lower space formed by the inner air chamber and the air distribution plate, wherein the air inlet is connected to the temperature control device, and an upper space formed by the inner air chamber and the air distribution plate is a drying chamber, wherein a material inlet is arranged on the outer side of the drying chamber, the drying chamber is connected to the dust removing device, and the sorting device is connected to the dust removing device.

[0007] Furthermore, an air filter is installed at the input end of the fan.

[0008] Furthermore, the dust removal device includes a cyclone separator, a discharge port and a bag dust collector, the cyclone separator is connected to the drying chamber, the discharge port is connected to the discharge end of the cyclone separator, and the bag dust collector is connected to the air outlet end of the cyclone separator.

[0009] Furthermore, the sorting device includes a vibration sorting device, a non-damage grain silo and a crushed grain silo, the vibration sorting device is arranged below the discharge port, the non-damage grain silo is arranged below one side of the vibration sorting device, and the crushed grain silo is arranged below the other side of the vibration sorting device.

[0010] Furthermore, the air distribution holes on the air distribution plate are circular holes.

[0011] Furthermore, the angle between the opening direction of the air distribution holes and the vertical line of the air distribution plate is 0-15°.

[0012] Furthermore, the fluidized bed drying apparatus operates in a shallow bed mode, with a bed material height to diameter ratio of less than 0.5.

[0013] Furthermore, the grain particles have a particle size range of 1.0-5.0 mm.

[0014] Furthermore, the air velocity at the air filter inlet ranges from 2m / s to 5m / s.

[0015] A working method of a grain fluidized drying and sorting integrated device, comprising the following steps:

[0016] Step 1: The air is filtered through the air filter, the flow rate is controlled by the rotor flow meter through the fan, and then enters the temperature control device for heating;

[0017] Step 2: The heated air enters the inner air chamber from the air inlet and is guided into the drying chamber through the air distribution plate:

[0018] Step 3: Feed the grains to be dried into the inner air chamber from the feed inlet, and dry them with the air heated in step 2;

[0019] Step 4: The dried grain collides in the cyclone separator, and then enters the vibration sorting device through the discharge port for vibration screening. The intact grain is transported to the intact grain silo, and the broken grain is transported to the crushed grain silo.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention crushes the cracked grains by a cyclone separator, and then screens the intact grains and broken grains by a vibration sorting device, thereby removing the cracked grains, which can effectively improve the drying quality of the grains after drying and the reliability of the drying device.

[0022] 2. In the present invention, the air is first heated by a hot air flow generating device, and the heated gas enters the drying chamber. The dust removal device consists of a cyclone separator, a discharge port and a bag dust collector. Through two-stage treatment, it is ensured that the discharged hot air is fully dust-removed, thereby achieving efficient drying and a clean operating environment. The bursting grains collide and break in the cyclone separator, and then the grain particles enter the vibration sorting device from the discharge port for vibration screening. The intact particles are transported to the intact grain silo, and the broken grains are transported to the broken grain silo, thereby ensuring the grain quality when leaving the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of an integrated grain fluidized drying and sorting device according to the present invention.

[0025] 1-air filter, 2-fan, 3-rotor flowmeter, 4-temperature control device, 5-air inlet, 6-inner wind chamber, 7-feeding port, 8-air distribution plate, 9-drying chamber, 10-cyclone separator, 11-discharge port, 12-bag dust collector, 13-vibration sorting device, 14-non-destructive grain silo, 15-crushed grain silo. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0027] See also Figure 1To illustrate the present embodiment, a fluidized drying and sorting integrated device for grain comprises a hot air flow generating device, a fluidized bed drying device, a dust removing device and a sorting device, wherein the hot air flow generating device comprises a fan 2, a rotor flow meter 3 and a temperature control device 4, wherein the fan 2 is connected to the temperature control device 4, and the rotor flow meter 3 is arranged between the fan 2 and the temperature control device 4, wherein the fluidized bed drying device comprises an air inlet 5, an inner air chamber 6, a feeding port 7, an air distribution plate 8 and a drying chamber 9, wherein an air distribution plate 8 is arranged in the inner air chamber 6, and an air inlet 5 is installed in the lower space formed by the inner air chamber 6 and the air distribution plate 8, wherein the air inlet 5 is connected to the temperature control device 4, and an upper space formed by the inner air chamber 6 and the air distribution plate 8 is a drying chamber 9, wherein an feeding port 7 is installed outside the drying chamber 9, the drying chamber 9 is connected to the dust removing device, and the sorting device is connected to the dust removing device.

[0028] An air filter 1 is installed at the input end of the fan 2.

[0029] The air is first filtered through the air filter 1, then passes through the fan 2 and the flow rate is controlled by the rotor flowmeter 3, and then enters the temperature control device 4 for heating. The fluidized bed drying device includes an air inlet 5, an inner wind chamber 6, an inlet 7, an air distribution plate 8 and a drying chamber 9. The gas is transported to the inner wind chamber 6 through the air inlet 5 and guided into the drying chamber 9 by the air distribution plate 8 to provide dry gas for the grain particles. The dust removal device consists of a cyclone separator 10, a discharge port 11 and a bag dust collector 12. Through two-stage treatment, it is ensured that the discharged hot air is fully dust-removed; the sorting device includes a vibration sorting device 13, a non-destructive grain silo 14, and a crushed grain silo 15. The vibration sorting device has an embedded sorting plate for The intact particles and broken particles are screened, and the intact particles are conveyed to the intact grain silo 14, and the broken particles are conveyed to the broken particle silo 15. Through two-stage treatment, it is ensured that the discharged hot air is fully dust-removed, so as to achieve efficient drying and a clean operating environment. The cracked grains collide and break in the cyclone separator, and then the grain particles enter the vibration sorting device from the discharge port for vibration screening. The intact particles are conveyed to the intact grain silo, and the broken particles are conveyed to the broken particle silo, so as to ensure the grain quality when leaving the factory. The intact particles and broken particles are screened by the vibration sorting device 13, so as to remove the cracked grains with cracks, which can effectively improve the drying quality of the dried grain particles and the reliability of the drying device.

[0030] Furthermore, the air flow passes through the air filter 1, then passes through the fan 2, and the flow rate is controlled by the rotor flowmeter 3, and then enters the temperature control device 4 for heating. The applicable air speed and temperature can be adjusted for different types of grain particles, thereby improving the drying process of the grain particles.

[0031] Furthermore, the dust removal device includes a cyclone separator 10, a discharge port 11 and a bag dust collector 12. The cyclone separator 10 is connected to the drying chamber 9, the discharge port 11 is connected to the discharge end of the cyclone separator 10, and the bag dust collector 12 is connected to the air outlet end of the cyclone separator 10. After drying, the grain particles enter the cyclone separator 10 with adjustable speed for collision. The speed is adjusted to a speed that can crush the exploded kidney grains without crushing the intact particles, and the speed can be adjusted according to the types of different grain particles. The hot air is discharged after passing through the dust removal device with two-stage treatment of the cyclone separator 10 and the bag dust collector 12.

[0032] Furthermore, the sorting device includes a vibration sorting device 13, a damage-free grain silo 14 and a grain-crushing silo 15. The vibration sorting device 13 is arranged below the discharge port 11, the damage-free grain silo 14 is arranged below one side of the vibration sorting device 13, and the grain-crushing silo 15 is arranged below the other side of the vibration sorting device 13. The grain particles after collision enter the vibration sorting device 13 from the discharge port 11 for vibration screening, and then the crack-free grain particles are transported to the damage-free grain silo 14, and the crushed grain particles are transported to the grain-crushing silo 15.

[0033] Furthermore, the air distribution holes on the air distribution plate 8 are circular holes, and the angle between the opening direction of the air distribution holes and the vertical line of the air distribution plate 8 is 0-15°. The grain particles are added into the drying chamber 9 through the feed port 7, and the hot air flow in the inner air chamber 6 flows into the drying chamber 9 through the air distribution plate 10. The air distribution holes are circular holes, and the angle between the opening direction and the vertical line of the air distribution plate is 0-15°. The grain particles are fully dried under the action of the hot air flow.

[0034] Furthermore, the fluidized bed drying apparatus operates in a shallow bed mode, and a ratio of bed material height to diameter is less than 0.5.

[0035] Furthermore, the device is used for grain particles with a particle size range of 1.0-5.0 mm, which can ensure efficient screening of grain particles. The air velocity range at the inlet of the air filter 1 is 2m / s-5m / s, which can ensure that the particles in the fluidized bed enter a uniform fluidized state, thereby improving the drying quality of the grain particles.

[0036] Furthermore, a working method of a grain fluidized drying and sorting integrated device comprises the following steps:

[0037] Step 1: The air is filtered through the air filter 1, passes through the fan 2 and the flow rate is controlled by the rotor flowmeter 3, and enters the temperature control device 4 for heating;

[0038] Step 2: The heated air enters the inner air chamber 6 through the air inlet 5 and is guided into the drying chamber 9 through the air distribution plate 8:

[0039] Step 3: feeding the grains to be dried into the inner air chamber 6 from the feed inlet 7, and drying them with the air heated in step 2;

[0040] Step 4: The dried grain collides in the cyclone separator 10 and then enters the vibration sorting device 13 through the discharge port 11 for vibration screening. The intact grain is transported to the intact grain silo 14, and the broken grain is transported to the crushed grain silo 15.

[0041] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A grain fluidized drying and sorting integrated device, characterized in that: The invention comprises a hot air flow generating device, a fluidized bed drying device, a dust removal device and a sorting device. The hot air flow generating device comprises a fan (2), a rotor flow meter (3) and a temperature control device (4). The fan (2) is connected to the temperature control device (4). The rotor flow meter (3) is arranged between the fan (2) and the temperature control device (4). The fluidized bed drying device comprises an air inlet (5), an inner air chamber (6), a material inlet (7), an air distribution plate (8) and a drying chamber (9). An air distribution plate (8) is arranged in the inner air chamber (6). The lower space formed by the inner air chamber (6) and the air distribution plate (8) is provided with an air inlet (5). The air inlet (5) is connected to the temperature control device (4). The upper space formed by the inner air chamber (6) and the air distribution plate (8) is a drying chamber (9). The outer side of the drying chamber (9) is provided with a material inlet (7). The drying chamber (9) is connected to the dust removal device. The sorting device is connected to the dust removal device.

2. The grain fluidized drying and sorting integrated device according to claim 1, characterized in that: An air filter (1) is installed at the input end of the fan (2).

3. The grain fluidized drying and sorting integrated device according to claim 1, characterized in that: The dust removal device comprises a cyclone separator (10), a discharge port (11) and a bag dust collector (12); the cyclone separator (10) is connected to the drying chamber (9); the discharge port (11) is connected to the discharge end of the cyclone separator (10); and the bag dust collector (12) is connected to the air outlet end of the cyclone separator (10).

4. The grain fluidized drying and sorting integrated device according to claim 3, characterized in that: The sorting device comprises a vibration sorting device (13), a non-damage grain silo (14) and a crushed grain silo (15); the vibration sorting device (13) is arranged below the discharge port (11); the non-damage grain silo (14) is arranged below one side of the vibration sorting device (13); and the crushed grain silo (15) is arranged below the other side of the vibration sorting device (13).

5. The grain fluidized drying and sorting integrated device according to claim 1, characterized in that: The air distribution holes on the air distribution plate (8) are circular holes.

6. The grain fluidized drying and sorting integrated device according to claim 6, characterized in that: The angle between the opening direction of the air distribution holes and the vertical line of the air distribution plate (8) is 0-15°.

7. The grain fluidized drying and sorting integrated device according to claim 1, characterized in that: The fluidized bed drying apparatus operates in a shallow bed mode, with a bed material height to diameter ratio of less than 0.

5.

8. The grain fluidized drying and sorting integrated device according to claim 1, characterized in that: For grain particles, the particle size range is 1.0-5.0mm.

9. The grain fluidized drying and sorting integrated device according to claim 2, characterized in that: The air velocity at the inlet of the air filter (1) ranges from 2 m / s to 5 m / s.

10. A working method of the integrated grain fluidized drying and sorting device according to any one of claims 1 to 9, characterized in that: It includes the following steps: Step 1: The air is filtered through an air filter (1), passes through a fan (2) and the flow rate is controlled by a rotor flow meter (3), and enters a temperature control device (4) for heating; Step 2: The heated air enters the inner air chamber (6) through the air inlet (5) and is guided into the drying chamber (9) through the air distribution plate (8): Step 3: feeding the grains to be dried into the inner air chamber (6) from the feed inlet (7) and drying them with the air heated in step 2; Step 4: The dried grains collide in the cyclone separator (10) and then enter the vibration sorting device (13) through the discharge port (11) for vibration screening. The intact grains are transported to the intact grain silo (14) and the broken grains are transported to the crushed grain silo (15).

Images