Air sweeping dryer

Abstract

The invention discloses an air sweeping dryer which comprises a dryer body and is characterized in that a feeding conveyor is installed at the feeding end of the dryer body, a heat source unit is installed on the upper portion of the dryer body, an air heater is installed on the heat source unit, and the air inlet end of the heat source unit is communicated with the upper portion of the dryer body through an air inlet pipe. The device has the beneficial effects that the blades are arranged, so that materials have no bonding space in the process that the main shaft drives the blades to rotate, the problem that paste materials are bonded can be solved, meanwhile, the rotating blades can raise the materials, the materials make full contact with hot air, the materials are rapidly dehydrated, and the drying efficiency is improved. Materials containing impurity particles can be treated through cooperation of the air cylinder and the net-shaped baffle, air enters the net-shaped baffle, the materials containing large particles can be deposited on the net-shaped baffle, deposited powder materials on the large particles can be taken away by the air, the air cylinder drives the net-shaped baffle to be opened and closed regularly, the large materials are discharged, and the separation effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of industrial drying equipment technology, and in particular to an air-sweeping dryer. Background Technology

[0002] Drying equipment refers to a combination of mechanical devices that use certain technical means to dry the surface of objects of moisture or other liquids. Popular drying technologies mainly include ultraviolet drying, infrared drying, electromagnetic drying, and hot air drying. Each has its own characteristics and is widely used in the drying of various mechanical equipment and food products. Drying equipment is a device that uses heat energy to dry materials with high moisture content; the utilization of heat energy plays a crucial role in the drying process. If heat cannot be removed in time or circulation is poor, it will affect the entire system. Heat energy can be generated in many forms, such as electric heating elements, natural gas, diesel, and coal, all of which can be used to generate heat energy through certain equipment. The heat sources equipped in drying equipment include electric heaters, gas burners, oil burners, and coal-fired furnaces. The induced draft fan of the drying equipment is controlled by a frequency converter, resulting in a high degree of automation and saving a significant amount of manpower and resources.

[0003] Traditional drying equipment often faces problems such as low drying efficiency, easy material sticking to the wall, and difficulty in cleaning when processing materials with low solid phase and high viscosity. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies when processing low-solid-phase, high-viscosity materials, such as low drying efficiency, easy material sticking to the wall, and difficulty in cleaning, and to provide an air-swept dryer.

[0005] The objective of this invention is achieved through the following technical solution: A wind-swept dryer, comprising a dryer body, characterized in that: a feeding conveyor is installed at the feeding end of the dryer body, a heat source unit is installed on the upper part of the dryer body, a hot air fan is installed on the heat source unit, the air inlet of the heat source unit is connected to the upper part of the dryer body through an air inlet pipe, and the air outlet of the heat source unit is connected to the air inlet of the dryer body through an upper air inlet and feeding port. The heat source unit adopts a back-mounted structure, which not only saves space, but also allows for the recirculation of exhaust gas hot air through the air inlet pipe, thereby improving the utilization efficiency of hot air.

[0006] The dryer body has an inner layer, and the outer side of the inner layer is a jacket. The jacket can play a role in heat preservation. The air inlet pipe is connected to the upper part of the jacket.

[0007] A rotatable main shaft is installed in the middle of the dryer body, and a drive device is installed on one side of the dryer body. The power output end of the drive device is connected to the main shaft. Multiple sets of shaft collars are installed on the main shaft. The shaft collars are connected to blades through support tubes. The gap between the blades and the inner ring of the inner layer is 2mm.

[0008] A slag discharge port is installed on the lower part of the dryer body away from the feeding conveyor. A sliding mesh baffle is installed at the discharge end of the slag discharge port. A cylinder is installed on one side of the slag discharge port. The telescopic end of the cylinder is connected to the mesh baffle. By setting the cylinder and the mesh baffle to cooperate, materials containing impurity particles can be processed. Air enters through the mesh baffle. If there are large particles in the material, they will be deposited on the mesh baffle. The powder material deposited on the large particles will be carried away by the air. The cylinder drives the mesh baffle to open and close periodically to discharge the large particles, but the powder material will not be carried out, thus playing a separation role.

[0009] By setting the gap between the blades and the inner layer to 2mm, the material has no space to stick together during the rotation of the blades driven by the main shaft, which can solve the problem of paste-like material sticking together. At the same time, the rotating blades can lift the material, allowing the material to fully contact the hot air and quickly dehydrate the material. The slag discharge port can discharge the material that cannot be crushed.

[0010] An inspection door is installed on the upper part of the dryer body on the side away from the feed conveyor.

[0011] A further technical solution is to install two sets of double semi-circular pressure locks at the end of the support tube away from the shaft collar, and install a rotatable blade shaft between the two sets of double semi-circular pressure locks. The end of the blade shaft away from the double semi-circular pressure locks is connected to the blade. By setting the double semi-circular pressure locks to cooperate with the blade shaft, the length and angle of the blade can be adjusted and controlled, which can change the running route of the material. The material can be made to run from the rear of the dryer body to the front until the moisture content of the material reaches a sufficient level and is then drawn out by air to the pulse drying section.

[0012] A further technical solution involves blades comprising flat blades, toothed blades, and dispersing blades. The flat blades have an arc-shaped section on the side furthest from the blade axis, while the toothed blades have crushing teeth on the side furthest from the blade axis. The flat blades propel the material and change its flow direction, the toothed blades crush the material, and the dispersing blades disperse the material, ensuring thorough mixing between the material and hot air, resulting in vigorous heat exchange and accelerated drying. Different types of blades can be combined to meet different functional requirements depending on the application, effectively improving the drying efficiency of the material and avoiding problems such as material sticking to the walls and difficulty in cleaning.

[0013] A further technical solution involves equipping the dispersing blades with multiple sets of vertically arranged dispersing rods. These rods effectively disperse the material, preventing it from sticking together.

[0014] A further technical solution involves setting a middle feed inlet and a lower feed inlet at the feed end of the dryer body. The lower feed inlet is located at the bottom of the feed end of the dryer body, while the middle feed inlet is located between the upper air inlet and the lower feed inlet. The upper air inlet allows material to circulate within the dryer body along with hot air. The middle feed inlet allows material to directly enter the vicinity of the main shaft within the dryer body for drying. The lower feed inlet is suitable for drying materials with lumpy structures, thus achieving zoned drying of the material and improving drying efficiency.

[0015] A further technical solution is to install a section panel at the bottom of the dryer body, which facilitates the installation and disassembly of the dryer body.

[0016] A further technical solution involves a dryer body comprising a feeding zone, a drying residence zone, and a discharge zone. A return feeder and a damper are installed within the dryer body. The slag discharge port is located at the bottom of the discharge zone, and the inspection door is located at the top. The feeding zone, with the support pipes and blades, breaks up clumps of material into small particles. The high-speed rotation of the main shaft ensures thorough mixing of the material and hot air, resulting in intense heat exchange, accelerated heat transfer, a decrease in hot air temperature, and an increase in material temperature. The material dries rapidly in the feeding zone, with moisture absorbing a large amount of heat and vaporizing into water vapor, creating a significant temperature difference. This stage is the rapid drying stage of the material and is therefore also called the "flash zone." An adjustable return feeder can be installed in the feeding zone to facilitate material remixing. Still damp and sticky material will be further agitated and remixed by the return feeder until it reaches a condition where it can be carried by the airflow to the next zone. In addition, new materials are continuously introduced during the back-mixing process. After entering the drying and holding zone from the feeding zone, the materials come into full contact with the hot air, resulting in good heat exchange, high drying efficiency, and a rapid decrease in the material's moisture content. Simultaneously, multiple or more dampers are installed in the drying zone. Working together with the return feeders, these dampers further impede the material's forward speed, extending the drying time. The parameters of these return feeders can be adjusted according to different materials to control the material's movement path. The discharge zone has a similar structure to the drying and holding zone, both equipped with return feeders, and a slag discharge port is designed at the bottom of the discharge zone.

[0017] A further technical solution involves connecting a pulse drying section to the end of the inspection door furthest from the dryer body. A collector is installed at the discharge end of the pulse drying section, and a pulse bag filter for dust removal is installed at the air outlet end of the collector. A discharge device is installed at the discharge end of the collector, and an exhaust fan is installed at the air outlet end of the pulse bag filter. The dried material separates the dust and material through the collector, and the material is discharged through the discharge device. The dust enters the pulse bag filter for dust removal under the action of the wind. The exhaust fan is responsible for providing airflow to the entire system.

[0018] A further technical solution is that the feed end of the collector can be equipped with multiple sets of dryer bodies connected end to end to achieve multi-stage drying, which is suitable for different materials.

[0019] This invention has the following advantages: By setting the gap between the blades and the inner layer to 2mm, this invention can prevent materials from adhering during the rotation of the blades driven by the main shaft, thus solving the problem of paste-like materials sticking together. At the same time, the rotating blades can lift the materials, allowing them to fully contact the hot air and quickly dehydrate them. By setting a cylinder in conjunction with a mesh baffle, it can handle materials containing impurities and particles. The mesh baffle allows air to enter, and if there are large particles in the material, they will be deposited on the mesh baffle. The powder material deposited on the large particles will be carried away by the air. The cylinder drives the mesh baffle to open and close periodically, discharging large particles, but the powder material will not be carried out, thus achieving a separation effect. Attached Figure Description

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the dryer body in this invention;

[0022] Figure 3 This is a cross-sectional schematic diagram of the inner layer of the dryer body in this invention;

[0023] Figure 4 This is a schematic diagram of the mesh baffle structure in this invention;

[0024] Figure 5 This is a side sectional view of the dryer body in this invention;

[0025] Figure 6 This is a schematic diagram of the collar structure in this invention;

[0026] Figure 7 This is a schematic side sectional view of the inner layer of the dryer body in this invention;

[0027] Figure 8 This is a schematic diagram of the structure of the disintegrating blade in this invention;

[0028] Figure 9 This is a schematic diagram of another state structure of the present invention;

[0029] In the diagram, 1. Dryer body; 2. Feed conveyor; 3. Heat source unit; 4. Air inlet pipe; 5. Inner layer; 6. Jacket; 7. Slag discharge port; 8. Pulse drying section; 9. Collector; 10. Unloader; 11. Pulse bag filter; 12. Exhaust fan; 13. Top air inlet and feed inlet; 14. Hot air fan; 15. Main shaft; 16. Cylinder; 17. Mesh baffle; 18. Middle feed inlet; 19. Bottom feed inlet; 20. Section panel; 21. Inspection door; 22. Drive unit; 23. Clamping handwheel; 24. Hinge; 25. Support pipe; 26. Blade; 27. Double semi-circular pressure lock; 28. Blade shaft; 29. ​​Clamping buckle; 30. Shaft collar; 31. Dispersing rod. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] like Figures 1-9 As shown, a wind-swept dryer includes a dryer body 1, characterized in that: a feeding conveyor 2 is installed at the feeding end of the dryer body 1, a heat source unit 3 is installed on the upper part of the dryer body 1, a hot air blower 14 is installed on the heat source unit 3, the air inlet end of the heat source unit 3 is connected to the upper part of the dryer body 1 through an air inlet pipe 4, and the air outlet end of the heat source unit 3 is connected to the air inlet end of the dryer body 1 through an upper air inlet and feeding port 13. The heat source unit 3 adopts a back-mounted structure, which not only saves space, but also allows for the recirculation of exhaust hot air by setting the air inlet pipe 4, thereby improving the utilization efficiency of hot air.

[0037] The dryer body 1 has an inner layer 5 inside, and a jacket 6 is provided on the outside of the inner layer 5. The jacket 6 can play a role in heat preservation. The air inlet pipe 4 is connected to the upper part of the jacket 6.

[0038] A rotatable main shaft 15 is installed in the middle of the dryer body 1. A drive device 22 is installed on one side of the dryer body 1. The power output end of the drive device 22 is connected to the main shaft 15. Multiple sets of shaft collars 30 are installed on the main shaft 15. The shaft collars 30 are connected to blades 26 through support tubes 25. The gap between the blades 26 and the inner ring of the inner layer 5 is 2mm.

[0039] A slag discharge port 7 is installed on the lower part of the dryer body 1 on the side away from the feed conveyor 2. A sliding mesh baffle 17 is installed at the discharge end of the slag discharge port 7. A cylinder 16 is installed on one side of the slag discharge port 7. The telescopic end of the cylinder 16 is connected to the mesh baffle 17. By setting the cylinder 16 and the mesh baffle 17 to cooperate, materials containing impurity particles can be processed. Air enters through the mesh baffle 17. If there are large particles in the material, they will be deposited on the mesh baffle 17, and the deposited powder material on the large particles will be carried away by the air. The cylinder 16 drives the mesh baffle 17 to open and close periodically to discharge the large particles, but the powder material will not be carried out, thus playing a separation role.

[0040] By setting the gap between the blade 26 and the inner layer 5 to 2mm, no space for material adhesion is created during the rotation of the blade 26 driven by the main shaft 15, thus solving the problem of paste-like material adhesion. Simultaneously, the rotating blade 26 lifts the material, allowing it to fully contact the hot air and rapidly dehydrate it. The slag discharge port 7 allows uncrushable material to be discharged.

[0041] A maintenance door 21 is installed on the upper part of the dryer body 1 on the side away from the feed conveyor 2.

[0042] Two sets of double semi-circular locking buckles 27 are installed at the end of the support tube 25 away from the collar 30. A rotatable blade shaft 28 is installed between the two sets of double semi-circular locking buckles 27. The end of the blade shaft 28 away from the double semi-circular locking buckles 27 is connected to the blade 26. By setting the double semi-circular locking buckles 27 to cooperate with the blade shaft 28, the length and angle of the blade 26 can be adjusted and controlled, which can change the running path of the material. The double semi-circular locking buckles 27 are tightened by multiple sets of bolts and locking buckles 29, which can adjust the length and angle of the blade 26, so that the material can run from the rear of the dryer body 1 to the front until the material moisture reaches a sufficient level and is then led out by air to the pulse drying section 8.

[0043] The blades 26 include flat blades, toothed blades, and dispersing blades. The flat blades are curved on the side away from the blade axis 28, and the toothed blades have crushing teeth on the side away from the blade axis 28. The flat blades can propel the material and change its flow direction, the toothed blades crush the material, and the dispersing blades disperse the material, so that the material is fully mixed with the hot air and undergoes intense heat exchange to accelerate drying. Different types of blades 26 can be used to meet different functional requirements depending on the application, effectively improving the drying efficiency of the material and avoiding the problems of material sticking to the wall and being difficult to clean.

[0044] The dispersing blade is equipped with multiple sets of vertically arranged dispersing rods 31. By setting multiple sets of vertically arranged dispersing rods 31, the material can be effectively dispersed, and the material can be prevented from sticking together.

[0045] The dryer body 1 has a central feed inlet 18 and a lower feed inlet 19 at its feed end. The lower feed inlet 19 is located at the bottom of the feed end of the dryer body 1, while the central feed inlet 18 is located between the upper air inlet 13 and the lower feed inlet 19. By setting the upper air inlet 13, materials can enter the dryer body 1 with the hot air for circulation. The central feed inlet 18 allows materials to directly enter the vicinity of the main shaft 15 inside the dryer body 1 for drying. The lower feed inlet 19 is suitable for drying materials with lumps, thereby achieving zoned drying of materials and improving drying efficiency.

[0046] A section panel 20 is installed at the bottom of the dryer body 1. The section panel 20 facilitates the installation and disassembly of the dryer body 1.

[0047] The dryer body 1 is configured with a feeding zone, a drying residence zone, and a discharge zone. A return feeder and a damper are installed inside the dryer body 1. The slag discharge port 7 is located at the lower part of the discharge zone, and the inspection door 21 is located at the upper part of the discharge zone. The feeding zone allows the material to be broken down into small particles by the support pipe 25 and blades 26. The main shaft 15 rotates at high speed, and the material is thoroughly mixed with hot air, resulting in intense heat exchange and accelerated heat transfer. The hot air temperature begins to decrease, while the material temperature begins to rise. The material dries rapidly in the feeding zone, and the moisture absorbs a large amount of heat, beginning to vaporize into water vapor, creating a significant temperature difference. This stage is the rapid drying stage of the material and is therefore also called the "flash zone." An adjustable return feeder can be installed in the feeding zone to facilitate material remixing. Still damp and sticky material will be further stirred and remixed by the return feeder until it reaches a condition where it can be carried by the airflow to the next zone.

[0048] In addition, new materials are continuously introduced during the back-mixing process. After entering the drying and holding zone from the feeding zone, the materials come into full contact with the hot air, resulting in good heat exchange, high drying efficiency, and a rapid decrease in the material's moisture content. Simultaneously, multiple or more dampers are installed in the drying zone. Working together with the return feeder, these dampers further impede the material's forward speed, extending the drying time. The parameters of these return feeders can be adjusted according to different materials to control the material's movement path. The discharge zone has a similar structure to the drying and holding zone, both equipped with return feeders, and a slag discharge port 7 is designed at the bottom of the discharge zone.

[0049] The dryer body 1 has maintenance doors 21 on its sides corresponding to the feeding area, drying residence area and discharge area. The maintenance doors 21 can be opened at 90° by hinges 24 to repair the internal components of the dryer body 1. The maintenance doors 21 are pressed against the outer wall of the dryer body 1 by a clamping handwheel 23. Tools are required to open the maintenance doors 21 by turning the clamping handwheel 23 to ensure equipment safety.

[0050] The end of the inspection door 21 away from the dryer body 1 is connected to the pulse drying section 8. The discharge end of the pulse drying section 8 is equipped with a collector 9. The air outlet end of the collector 9 is equipped with a pulse bag dust collector 11 for dust removal. The discharge end of the collector 9 is equipped with a discharge device 10. The air outlet end of the pulse bag dust collector 11 is equipped with a tail gas fan 12. The dried material separates the dust and material through the collector 9. The material is discharged through the discharge device 10, while the dust enters the pulse bag dust collector 11 for dust removal under the action of the wind. The tail gas fan 12 is responsible for providing wind power for the entire system.

[0051] The feed end of the collector 9 can be equipped with multiple sets of dryer bodies 1 connected end to end to achieve multi-stage drying, which is suitable for different materials.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wind-swept dryer, comprising a dryer body (1), characterized in that: The feed conveyor (2) is installed at the feed end of the dryer body (1), and a heat source unit (3) is installed on the upper part of the dryer body (1). A hot air blower (14) is installed on the heat source unit (3). The air inlet of the heat source unit (3) is connected to the upper part of the dryer body (1) through the air inlet pipe (4), and the air outlet of the heat source unit (3) is connected to the air inlet of the dryer body (1) through the upper air inlet and feed port (13). The dryer body (1) is provided with an inner layer (5), and a jacket (6) is provided on the outside of the inner layer (5). The air inlet pipe (4) is connected to the upper part of the jacket (6). A rotatable main shaft (15) is installed in the middle of the dryer body (1), and a drive device (22) is installed on one side of the dryer body (1). The power output end of the drive device (22) is connected to the main shaft (15). Multiple sets of shaft collars (30) are installed on the main shaft (15), and blades (26) are connected to the shaft collars (30) through the support tube (25). A slag discharge port (7) is installed on the lower part of the dryer body (1) away from the feeding conveyor (2). A sliding mesh baffle (17) is installed at the discharge end of the slag discharge port (7). A cylinder (16) is installed on one side of the slag discharge port (7). The telescopic end of the cylinder (16) is connected to the mesh baffle (17). A maintenance door (21) is installed on the upper part of the dryer body (1) on the side away from the feed conveyor (2).

2. The air-sweeping dryer according to claim 1, characterized in that: Two sets of double semi-circular pressure locks (27) are installed at the end of the support tube (25) away from the collar (30). A rotatable blade shaft (28) is installed between the two sets of double semi-circular pressure locks (27). The end of the blade shaft (28) away from the double semi-circular pressure locks (27) is connected to the blade (26).

3. The air-sweeping dryer according to claim 1, characterized in that: The blade (26) includes a flat blade, a toothed blade and a disintegrating blade. The side of the flat blade away from the blade axis (28) is arc-shaped, and the side of the toothed blade away from the blade axis (28) is provided with breaking teeth.

4. The air-sweeping dryer according to claim 3, characterized in that: The dispersing blade is provided with multiple sets of vertically arranged dispersing rods (31).

5. The air-sweeping dryer according to claim 1, characterized in that: The feed end of the dryer body (1) is provided with a middle feed inlet (18) and a lower feed inlet (19). The lower feed inlet (19) is located at the lower part of the feed end of the dryer body (1), and the middle feed inlet (18) is located between the upper air inlet (13) and the lower feed inlet (19).

6. The air-sweeping dryer according to claim 1, characterized in that: A section panel (20) is installed at the bottom of the dryer body (1).

7. The air-sweeping dryer according to claim 1, characterized in that: The dryer body (1) is provided with a feeding area, a drying residence area and a discharge area. The slag discharge port (7) is located at the lower part of the discharge area and the maintenance door (21) is located at the upper part of the discharge area.

8. The air-sweeping dryer according to claim 7, characterized in that: The inspection door (21) is connected to a pulse drying section (8) at the end away from the dryer body (1). A collector (9) is installed at the discharge end of the pulse drying section (8). A pulse bag dust collector (11) for dust removal is installed at the air outlet end of the collector (9). A discharge device (10) is installed at the discharge end of the collector (9). A tail gas fan (12) is installed at the air outlet end of the pulse bag dust collector (11).

9. A wind-swept dryer according to claim 8, characterized in that: The feed end of the collector (9) can be equipped with multiple sets of dryer bodies (1) connected end to end.

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