Multi-stage serial rotational flow drying device

Abstract

The utility model relates to the field of drying equipment, and discloses a multi-stage serial rotational flow drying device which comprises a first-stage rotational flow dryer, the feeding end of the first-stage rotational flow dryer is connected with a first-stage spiral conveyor, an air source and a material source, and the discharging end of the first-stage rotational flow dryer is connected with a second-stage spiral conveyor. The discharging end of the second-stage spiral material conveying machine is connected with a second-stage rotational flow dryer, and an overflow opening in the top of the first-stage rotational flow dryer is communicated with the feeding end of the second-stage rotational flow dryer through a pipeline. The multi-stage cyclone dryer can solve the problem of poor drying effect caused by direct end-to-end connection of multi-stage cyclone dryers in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of drying equipment, in particular to a multi-stage series cyclone drying device. Background Art

[0002] A cyclone dryer is a device used to dry materials. Its working principle is to use high-speed rotating blades to throw the materials into the air, and use hot wind or hot air to heat the materials to make them dry quickly. In order to improve the drying efficiency, there is a technology in the prior art to connect multiple cyclone dryers in series to form a multi-stage cyclone dryer. The current method of connecting multi-stage cyclone dryers in series is to directly connect multiple cyclone dryers end to end, which cannot ensure that the material forms a coupling of rotation and revolution in the cyclone dryer, and because the time is too short, the drying effect is greatly reduced. Utility Model Content

[0003] The utility model aims to provide a multi-stage cyclone drying device in series, so as to solve the problem of poor drying effect of multi-stage cyclone dryers directly connected in the first place in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multi-stage series cyclone drying device, comprising a primary cyclone dryer, the feed end of the primary cyclone dryer is connected to a primary screw feeder, a wind source, and a material source, the discharge end of the primary cyclone dryer is connected to a secondary screw feeder, the discharge end of the secondary screw feeder is connected to a secondary cyclone dryer, and the overflow port at the top of the primary cyclone dryer is connected to the feed end of the secondary cyclone dryer through a pipeline.

[0005] Preferably, as an improvement, the wind source is a fan connected to the primary cyclone dryer through a process pipeline, and a heater is connected to the process pipeline between the fan and the primary cyclone dryer.

[0006] Preferably, as an improvement, the discharge end of the first-stage screw conveyor is connected to the process pipeline between the heater and the first-stage cyclone dryer, and the material source is a silo connected to the feed end of the first-stage screw conveyor.

[0007] Preferably, as an improvement, a process pipeline is connected between the overflow port and the feed end of the secondary cyclone dryer, and the discharge end of the secondary screw conveyor is connected to the process pipeline between the overflow port and the feed end of the secondary cyclone dryer.

[0008] Preferably, as an improvement, the feed end of the secondary screw conveyor is directly connected to the discharge end of the primary cyclone dryer.

[0009] Preferably, as an improvement, a level meter is provided at the feed end of the two-stage screw conveyor.

[0010] Preferably, as an improvement, a star-shaped discharge valve is provided at the discharge end of the secondary cyclone dryer.

[0011] The principle and advantages of this scheme are: in actual application, this scheme mainly includes a fan, a heater, a first-stage screw feeder, a silo, an overflow port, a level meter, a first-stage cyclone dryer, a second-stage screw feeder, a second-stage cyclone dryer, and a star-shaped discharge valve. Compared with the traditional multi-stage cyclone dryer, this scheme adds a second-stage screw feeder, a level meter, and an overflow port. The material is poured into the silo and enters the pipeline through the first-stage screw feeder. The fan generates airflow through the heater to form a heat flow to guide the material to the first-stage cyclone dryer. The material is dehydrated by the coupled motion of self-rotation and revolution in the first-stage cyclone dryer. The heat flow is guided to the outlet of the second-stage screw feeder through the overflow port. When the material of the second-stage screw feeder accumulates to the starting height set by the level meter, the level meter control program starts the second-stage screw feeder to spirally convey the material to the outlet. The material is then guided to the second-stage cyclone dryer by the heat flow. The material is dehydrated by the coupled motion of self-rotation and revolution again. After dehydration, the material is discharged through the star-shaped discharge valve, and the heat flow is discharged through the air outlet. The intelligently designed level meter switch and the screw feeder with the same frequency as the feed design ensure the coupling of self-rotation and revolution of the material in the cyclone dryer, and appropriately increase the residence time of the material in the cyclone dryer, thereby improving the drying effect of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the two-stage screw conveyor in the embodiment of the utility model. DETAILED DESCRIPTION

[0014] The following is further described in detail through specific implementation methods:

[0015] The figure marks in the drawings of the specification include: fan 1, heater 2, primary screw feeder 3, silo 4, process pipeline 5, overflow port 6, primary cyclone dryer 7, level meter 8, secondary screw feeder 9, star-shaped discharge valve 10, secondary cyclone dryer 11.

[0016] The embodiment is basically as shown in the attached Figure 1As shown: a multi-stage cyclone drying device in series, including a primary cyclone dryer 7, the feed end of the primary cyclone dryer 7 is connected to a primary screw conveyor 3 and an air source, the air source is a fan 1 connected to the primary cyclone dryer 7 through a process pipeline 5, and a heater 2 is connected to the process pipeline 5 between the fan 1 and the primary cyclone dryer 7 through bolts and flanges. The discharge end of the primary screw conveyor 3 is connected to the process pipeline 5 between the heater 2 and the primary cyclone dryer 7 through bolts, flanges and tees, and a silo 4 as a material source is connected to the feed end of the primary screw conveyor 3 through bolts and flanges. The discharge end of the primary cyclone dryer 7 is connected to a secondary screw conveyor 9 through bolts and flanges, as shown. Figure 2 As shown, the feed end of the secondary screw conveyor 9 is provided with a material level meter 8. The discharge end of the secondary screw conveyor 9 is connected to a secondary cyclone dryer 11, the top overflow port 6 of the primary cyclone dryer 7 is connected to the feed end of the secondary cyclone dryer 11 through a process pipeline 5, and the discharge end of the secondary screw conveyor 9 is connected to the process pipeline 5 between the overflow port 6 and the feed end of the secondary cyclone dryer 11 through bolts, flanges, and tees. A star-shaped discharge valve 10 is provided at the discharge end of the secondary cyclone dryer 11.

[0017] The specific implementation process is as follows: turn on the heater 2 and the fan 1, and when the pointer of the thermometer of the first-stage cyclone dryer 7 points to 100°C, pour the material into the silo 4, and the material is guided to the first-stage cyclone dryer through the first-stage screw feeder 3 and the airflow, and the airflow is guided to the discharge end of the second-stage screw feeder 9 through the overflow port 6. When the straight barrel section of the feed end of the second-stage feeding screw machine is accumulated to a certain height, the level meter 8 recognizes it, and the level meter 8 sends a signal, and the second-stage screw feeder 9 starts to start at the feeding frequency of the first-stage screw feeder 3. The material is carried to the second-stage cyclone dryer 11 by the airflow for re-drying and then discharged from the discharge port.

[0018] Compared with the series connection of multiple cyclone dryers in the prior art, the hot air flow at the overflow port 6 of the primary cyclone dryer 7 is reused by combining components such as a screw feeder, a secondary screw feeder 9, and a level meter 8, which can effectively ensure that the material in the primary cyclone dryer 7 and the secondary cyclone dryer 11 performs coupled rotation and revolution motion, comprehensively and evenly dries the material, and increases the residence time of the material in the primary cyclone dryer 7 and the secondary cyclone dryer 11, so that the material is dried more fully. Compared with the prior art, the technical solution of the present application has a significantly better drying effect on the material.

[0019] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A multi-stage cyclone drying device, characterized in that: The invention comprises a primary cyclone dryer, wherein the feeding end of the primary cyclone dryer is connected with a primary screw conveyor, a wind source and a material source, the discharging end of the primary cyclone dryer is connected with a secondary screw conveyor, the discharging end of the secondary screw conveyor is connected with a secondary cyclone dryer, and the overflow port at the top of the primary cyclone dryer is connected with the feeding end of the secondary cyclone dryer through a pipeline.

2. A multi-stage series cyclone drying device according to claim 1, characterized in that: The wind source is a fan connected to the primary cyclone dryer through a process pipeline, and a heater is connected to the process pipeline between the fan and the primary cyclone dryer.

3. A multi-stage series cyclone drying device according to claim 2, characterized in that: The discharge end of the first-stage screw conveyor is connected to the process pipeline between the heater and the first-stage cyclone dryer, and the material source is a silo connected to the feed end of the first-stage screw conveyor.

4. A multi-stage series cyclone drying device according to claim 3, characterized in that: A process pipeline is connected between the overflow port and the feed end of the secondary cyclone dryer, and the discharge end of the secondary screw conveyor is connected to the process pipeline between the overflow port and the feed end of the secondary cyclone dryer.

5. A multi-stage series cyclone drying device according to claim 4, characterized in that: The feeding end of the secondary screw conveyor is directly connected to the discharging end of the primary cyclone dryer.

6. A multi-stage series cyclone drying device according to claim 5, characterized in that: A level meter is provided at the feeding end of the two-stage screw conveyor.

7. A multi-stage series cyclone drying device according to claim 6, characterized in that: A star-shaped discharge valve is provided at the discharge end of the secondary cyclone dryer.

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