A collision drying mechanism for a pneumatic drying apparatus

Abstract

This invention relates to the field of airflow drying equipment technology, and more particularly to a collision-type drying mechanism for airflow drying equipment, comprising a drying tube, and an air outlet pipe and an air inlet pipe fixedly connected at the top and bottom ends of the drying tube. Multiple equidistantly distributed spiral guide ribs are fixedly connected to the annular inner wall of the drying tube. Auxiliary conical seats for regulating air pressure and cooperating with the spiral guide ribs to perform secondary shearing and crushing of material clumps are respectively provided on the top and bottom sides of the drying tube, as well as a diversion conical seat to promote the formation of a vortex in the high-temperature airflow. This invention constructs a composite vortex airflow field with velocity difference through the rotation of the diversion conical seat, the guidance of the material guide strip, and the unidirectional collision of hot airflows, extending the air-material contact time, improving thermal efficiency, and initially breaking up material clumps. Then, the auxiliary conical seat rotates in the opposite direction, cooperating with the shearing edges and spiral guide ribs for secondary shearing, avoiding uneven drying due to agglomeration.

Description

Technical Field

[0001] This invention relates to the field of airflow drying equipment technology, and more particularly to a collision-type drying mechanism for airflow drying equipment. Background Technology

[0002] Airflow drying equipment is a continuous and efficient drying device that uses high-speed flowing hot air as the drying medium to quickly dry powder and granular wet materials. Its core working principle is to disperse and suspend the wet material in the hot airflow, and enhance the heat and mass transfer process through the high-speed relative motion of the gas and solid phases. It utilizes the full contact between the hot airflow and the material to quickly remove the moisture from the material. It features short drying time, high thermal efficiency, and large processing capacity. The structure usually includes functional units such as airflow conveying, heating, drying, and gas-solid separation. It is widely used in material dehydration treatment in industries such as chemical, food, and building materials.

[0003] Most existing airflow drying equipment relies solely on the flow force of hot air to initially disperse and suspend wet materials in the airflow, achieving rapid removal of surface moisture through gas-solid contact. However, it generally lacks targeted material clump breaking treatment for materials that are prone to sticking and agglomerating in humid environments. Due to their inherent stickiness, wet material clumps tend to form dense agglomerates, making it difficult for hot air to penetrate into the material clumps. Only the surface material is dried, resulting in the inability to effectively dissipate internal moisture. This not only causes uneven drying of the material but also leads to re-agglomeration in subsequent processing due to insufficient drying, thereby reducing the overall drying efficiency.

[0004] To address the aforementioned technical deficiencies, a solution is proposed that utilizes a rotating diverter cone, guided material strips, and co-directional colliding hot airflow to create a composite vortex airflow field with velocity differences. This extends the air-material contact time, improves thermal efficiency, and initially breaks up material clumps. Further, the auxiliary cone rotates in the opposite direction, combined with shearing edges and spiral guide ribs for secondary shearing, preventing agglomeration and uneven drying. Simultaneously, a pressure sensor monitors the airflow in real time, and a control valve regulates the pressure to prevent clogging. Combined with an arc-shaped filter and a self-cleaning elastic scraper, the hot airflow is guided to assist in heating the material, achieving uniform and efficient drying. Summary of the Invention

[0005] The purpose of this invention is to provide a collision-type drying mechanism for an airflow drying device to solve the aforementioned technical defects.

[0006] The objective of this invention can be achieved through the following technical solution: a collision-type drying mechanism for an airflow drying device, comprising a drying tube, and an air outlet pipe and an air inlet pipe fixedly connected at the top and bottom ends of the drying tube. Multiple equally spaced spiral guide ribs are fixedly connected to the annular inner wall of the drying tube. Auxiliary conical seats for regulating air pressure and cooperating with the spiral guide ribs to perform secondary shearing and crushing of material clumps are respectively provided on the top and bottom sides of the drying tube, as well as a diversion conical seat to promote the formation of swirling flow of high-temperature airflow.

[0007] Preferably, both the top and bottom ends of the drying tube are tapered structures. The thickness of the spiral guide rib located inside the tapered end of the drying tube gradually decreases from bottom to top. The distance between the tapered surface of the auxiliary conical seat and the inner wall of the tapered end of the drying tube gradually decreases from bottom to top. Several shearing edges are fixedly connected to the tapered surface of the auxiliary conical seat.

[0008] Preferably, a rotating pipe that is rotatably connected to the air outlet pipe is fixedly connected to the auxiliary conical seat, and a gas distribution pipe that is rotatably connected to the rotating pipe is fixedly connected to the diverting conical seat. The top of the gas distribution pipe passes through the rotating pipe and is fixedly connected to an air injection pipe through a rotating joint. Several inclined material feeding strips are fixedly connected to the conical surface of the diverting conical seat.

[0009] Preferably, a plurality of L-shaped tubes arranged in a ring array are fixedly connected to the outer wall of the gas distribution pipe. A plurality of nozzles are installed at equal intervals along the vertical direction on the L-shaped tubes, and the free ends of the nozzles are inclined upward. The direction of the free ends of the nozzles is the same as the rotation direction of the flow distribution cone seat, and the rotation direction of the flow distribution cone seat is the same as the rotation direction of the spiral guide rib.

[0010] Preferably, a motor is bolted to the top of the drying tube, and a driving bevel gear is fixedly mounted on the output shaft of the motor. Both the rotating tube and the air distribution tube are fixedly mounted with driven bevel gears that mesh with the driving bevel gear.

[0011] Preferably, the auxiliary conical seat has a conical cavity extending through its lower conical surface, and an air outlet cavity extending through the top of the conical cavity extends through the top of the auxiliary conical seat. A control valve is embedded in the air outlet cavity. An arc-shaped filter screen flush with the bottom of the auxiliary conical seat is installed inside the conical cavity. A pressure sensor is fixedly installed on the inner wall of the drying tube.

[0012] Preferably, a support plate is fixedly installed on the outer wall of the gas distribution pipe, and an elastic scraper that is slidably connected to the bottom of the auxiliary conical seat is fixedly connected to the support plate.

[0013] The beneficial effects of this invention are as follows:

[0014] (1) This invention uses the rotation of the diversion cone seat combined with the inclined material-pushing strip on its conical surface, along with the unidirectional collision hot airflow ejected from the nozzle, to construct a composite vortex airflow field with velocity difference in the drying tube. This not only prolongs the contact path and residence time between the high-temperature airflow and the material, thus improving the drying heat exchange efficiency, but also the collision impact force and shearing force of the composite vortex airflow can initially break up the wet material clumps. Combined with the reverse rotation of the auxiliary cone seat and the synergistic cooperation between the shearing edge on its conical surface and the spiral guide ribs on the inner wall of the drying tube, the unbroken material clumps are sheared and broken up in a secondary manner, effectively avoiding the problem of uneven drying caused by material agglomeration, and thus achieving uniform and efficient drying of the material.

[0015] (2) The present invention uses a pressure sensor to monitor the internal pressure of the drying tube in real time, and senses the abnormal pressure caused by the accumulation and blockage of material clumps in the shearing zone; when the pressure rises, the control valve opens and adjusts the opening degree according to the pressure value, guiding some of the excess hot air flow through the conical cavity and the outlet cavity to discharge, quickly reducing the pressure inside the tube and avoiding further blockage; and intercepts the material carried in the airflow through the arc-shaped filter screen, and achieves self-cleaning of the arc-shaped filter screen with the help of the elastic scraper driven by the air distribution pipe to prevent material accumulation; in addition, the hot air flow discharged by the guide is used to heat the auxiliary conical seat, improve the drying efficiency of the material accumulated in the shearing zone, and help the material clumps to be broken up and discharged quickly. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings;

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the drying tube of the present invention;

[0019] Figure 3 This is a schematic diagram of the arrangement of the spiral guide ribs inside the drying tube of the present invention;

[0020] Figure 4 This is a schematic diagram of the linkage between the auxiliary cone seat and the diverter cone seat of the present invention;

[0021] Figure 5 This is a schematic diagram of the auxiliary conical seat of the present invention.

[0022] Legend:

[0023] 1. Drying tube; 11. Spiral guide ribs; 12. Motor; 13. Drive bevel gear;

[0024] 2. Auxiliary conical seat; 21. Shearing edge; 22. Rotating tube; 23. Driven bevel gear; 24. Conical cavity; 25. Air outlet cavity; 26. Control valve; 27. Arc-shaped filter screen;

[0025] 3. Diverter cone seat; 31. Air distribution pipe; 32. Air injection pipe; 33. Material feeding strip; 34. L-shaped pipe; 35. Nozzle; 36. Support plate; 37. Flexible scraper. Detailed Implementation

[0026] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1: Please refer to Figures 1-4 As shown, in the crushing process where there is a lack of material clumps, the hot airflow has difficulty penetrating into the interior of the material clumps, and can only dry the surface material. This results in the internal moisture not being able to dissipate effectively, causing uneven drying of the material. The following solutions can be used to address this issue:

[0028] This embodiment describes a collision-type drying mechanism for an airflow drying device, including a drying tube 1 and an air outlet pipe and an air inlet pipe fixedly connected at the top and bottom ends of the drying tube 1. Multiple equally spaced spiral guide ribs 11 are fixedly connected to the annular inner wall of the drying tube 1. High-temperature airflow carrying material is injected into the drying tube 1 at high speed through the air inlet pipe. The spiral guide ribs 11 are used to assist the high-temperature airflow rising in the inner wall area of ​​the drying tube 1 to perform spiral swirling flow, thereby extending the flow path of the high-temperature airflow attached to the wall, increasing the flow time of the high-temperature airflow containing material inside the drying tube 1, and improving the drying effect of the material.

[0029] The top and bottom sides of the drying tube 1 are respectively provided with auxiliary cone seats 2 for regulating air pressure and cooperating with spiral guide ribs 11 to perform secondary shearing and crushing of material clumps, and diversion cone seats 3 to promote the formation of swirling flow of high temperature airflow.

[0030] A rotating pipe 22, which is rotatably connected to the outlet pipe, is fixedly connected to the auxiliary cone seat 2. A splitting pipe 31, which is rotatably connected to the rotating pipe 22, is fixedly connected to the splitting cone seat 3. The rotating pipe 22 and the splitting pipe 31 are used to drive the independent rotation of the corresponding auxiliary cone seat 2 and the splitting cone seat 3 respectively.

[0031] The top of the gas distribution pipe 31 passes through the rotating pipe 22 and is fixedly connected to the gas injection pipe 32 via a rotary joint. The gas injection pipe 32 and the rotary joint inject a collision hot airflow into the gas distribution pipe 31 without interfering with the rotation of the gas distribution pipe 31. This is used to form a specific angle of collision and fusion between the obliquely sprayed collision hot airflow and the high-temperature airflow in the swirling state, so as to continuously dry the wet material clumps while achieving preliminary dispersal treatment.

[0032] Several inclined material-pulling strips 33 are fixedly connected to the conical surface of the diversion cone seat 3. When the high-temperature airflow carrying the material contacts the conical surface of the diversion cone seat 3, the air distribution pipe 31 carries the diversion cone seat 3 to rotate in the forward direction. Combined with the several inclined material-pulling strips 33 on the conical surface of the diversion cone seat 3, the high-temperature airflow containing the material is driven to form a swirling upward path and is guided to flow along the spiral guide ribs 11 on the inner wall of the drying tube 1. This extends the flow path, increases the flow time of the high-temperature airflow containing the material inside the drying tube 1, and improves the drying effect of the material.

[0033] Multiple L-shaped pipes 34 arranged in a ring array are fixedly connected to the outer wall of the gas distribution pipe 31. Multiple nozzles 35 are installed at equal intervals along the vertical direction on the L-shaped pipes 34. The collision hot airflow is injected into the multiple L-shaped pipes 34 through the gas injection pipe 32, rotary joint and gas distribution pipe 31, and then sprayed out through the multiple nozzles 35. The airflow velocity of the collision hot airflow is lower than that of the high temperature airflow. Because the collision hot airflow is obliquely injected and merges with the high temperature vortex at a specific angle, the collision hot airflow enters the high temperature vortex and generates a velocity difference impact. A composite vortex airflow with collision impact force and shear force is formed in the inner wall area of ​​the drying pipe 1, thereby achieving preliminary dispersal treatment of the wet material clump.

[0034] Furthermore, the free end of the nozzle 35 is tilted upwards, and the upward spray of the colliding hot air helps to increase the flow rate of the composite vortex airflow for a second time, allowing the material to pass quickly through the shear zone between the auxiliary cone seat 2 and the inner wall of the drying tube 1, thus avoiding the accumulation and blockage of the material in the smaller shear zone.

[0035] The free end of the nozzle 35 faces the same direction as the rotation of the diverting cone seat 3, so that the ejection direction of the hot airflow is the same as the swirling direction of the high-temperature airflow, thus avoiding interference with the swirling upward state of the high-temperature airflow. The rotation direction of the diverting cone seat 3 is the same as the rotation direction of the spiral guide rib 11, ensuring that the spiral upward direction of the high-temperature airflow driven by the diverting cone seat 3 is consistent with the rotation direction of the spiral guide rib 11, so that the spiral guide rib 11 can fully assist the high-temperature airflow in swirling flow processing.

[0036] A motor 12 is bolted to the top of the drying tube 1, and a drive bevel gear 13 is fixedly mounted on the output shaft of the motor 12. Driven bevel gears 23 that mesh with the drive bevel gear 13 are fixedly mounted on the rotating tube 22 and the air distribution tube 31. The motor 12 drives the drive bevel gear 13 to rotate, and the drive bevel gear 13 drives the rotating tube 22 and the air distribution tube 31 to rotate synchronously in opposite directions through the driven bevel gears 23 meshing on both sides.

[0037] Example 2: Please refer to Figure 4 and Figure 5 As shown, the problem that compound vortex airflow alone cannot fully break up material clumps can be solved by the following solution:

[0038] In this embodiment, both the top and bottom ends of the drying tube 1 are tapered structures, which are used for effective contact between the high-temperature airflow entering the drying tube 1 and the diversion cone seat 3, and for secondary shearing and crushing of the material clump in conjunction with the auxiliary cone seat 2 when discharged. The thickness of the spiral guide rib 11 located in the tapered end of the drying tube 1 decreases gradually from bottom to top to avoid interference with the variable distance between the tapered surface of the auxiliary cone seat 2 and the inner wall of the tapered end of the drying tube 1.

[0039] The distance between the conical surface of the auxiliary conical seat 2 and the inner wall of the conical end of the drying tube 1 decreases gradually from bottom to top, which is used to promote the material clumps to enter the shear zone between the auxiliary conical seat 2 and the inner wall of the drying tube 1 better, thereby forming a grinding-type clump breaking effect.

[0040] Several shearing ridges 21 are fixedly connected to the upper conical surface of the auxiliary conical seat 2. Some undispersed material clumps enter the shearing zone. Through the reverse rotation of the auxiliary conical seat 2, the material clumps are made to adhere to the spiral guide ribs 11. At the same time, the material placed between the upper conical surface of the auxiliary conical seat 2 and the spiral guide ribs 11 is sheared by the several shearing ridges 21, which breaks the material clumps in the second stage and further improves the overall drying effect of the material.

[0041] The auxiliary conical seat 2 has a conical cavity 24 that extends through its lower conical surface. The top of the conical cavity 24 has an air outlet 25 that extends through the top of the auxiliary conical seat 2. A control valve 26 is installed inside the air outlet 25. The wires of the control valve 26 are connected to a conductive slip ring to avoid the problem of wire tangling. An arc-shaped filter screen 27 that is flush with the bottom of the auxiliary conical seat 2 is installed inside the conical cavity 24. A pressure sensor is fixedly installed on the inner wall of the drying tube 1. The pressure sensor is connected to the control valve 26 and the external control system. The pressure sensor detects the pressure data in the drying tube 1 and automatically controls the opening and closing of the control valve 26.

[0042] The air pressure inside the drying tube 1 is monitored in real time by an air pressure sensor. When a large amount of material accumulates in the shearing zone and becomes blocked due to moisture and inability to be effectively broken, the flow rate of hot air through the shearing zone decreases, causing the air pressure inside the drying tube 1 to increase. After the air pressure sensor detects the increase in air pressure, the control valve 26 opens and adjusts the opening amount according to the air pressure value. Excess hot air flows through the conical cavity 24 and the outlet cavity 25 into the outlet pipe, reducing the air pressure value, and the material is intercepted by the arc-shaped filter screen 27.

[0043] As the hot air flows through the conical cavity 24 and the outlet cavity 25, it performs additional heating on the auxiliary conical seat 2 to help improve the drying efficiency of the material clump in the shearing zone. Combined with the shearing treatment of the material clump by the auxiliary conical seat 2, the material clump is quickly broken up and discharged. The flow rate of the hot air in the shearing zone increases, and the air pressure sensor detects a decrease in the air pressure inside the drying tube 1. The control valve 26 is then closed to further maintain the flow rate of the material carried by the hot air, thereby completing the drying process of the material with high efficiency.

[0044] A support plate 36 is fixedly installed on the outer wall of the air distribution pipe 31, and an elastic scraper 37 is fixedly connected to the support plate 36 and slidably connected to the bottom of the auxiliary conical seat 2. During the forward rotation of the air distribution pipe 31, the support plate 36 drives the elastic scraper 37 to rotate circumferentially. Combined with the reverse rotation of the auxiliary conical seat 2, the elastic scraper 37 and the auxiliary conical seat 2 are relatively slidable. With the help of the forward rotation of the elastic scraper 37, the material intercepted on the arc-shaped filter screen 27 can be scraped off when too much high-temperature airflow is discharged, thereby realizing the continuous and efficient discharge of too much high-temperature airflow.

[0045] Example 3: Please refer to Figures 1-5 As shown, the present invention also proposes a method for using a collision-type drying mechanism in an airflow drying device, comprising the following steps:

[0046] Step 1: High-temperature airflow carrying material is injected into the drying tube 1 at high speed through the air inlet pipe, and then contacts the conical surface of the diverting cone seat 3. The motor 12 drives the active bevel gear 13 to rotate. The active bevel gear 13 drives the rotating tube 22 and the air distribution pipe 31 to rotate synchronously in opposite directions through the driven bevel gears 23 meshing on both sides. During the forward rotation of the air distribution pipe 31 carrying the diverting cone seat 3, the high-temperature airflow containing material and rising upwards is driven by several inclined material-pulling strips 33 on the conical surface of the diverting cone seat 3 to swirl and rise forward, so as to extend the flow path, increase the flow time of the high-temperature airflow containing material inside the drying tube 1, and improve the drying effect of the material.

[0047] Step 2: The opposing hot airflow is injected into multiple L-shaped pipes 34 through the air injection pipe 32, rotary joint and air distribution pipe 31, and then sprayed upward at an angle through multiple nozzles 35. The spraying direction is the same as the swirling direction of the high temperature airflow. In addition, the airflow velocity of the opposing hot airflow is lower than that of the high temperature airflow. Due to the oblique injection of the opposing hot airflow and the high temperature swirling flow forming a specific angle of convergence and fusion, the opposing hot airflow generates a velocity difference impact after entering the high temperature swirling flow. A composite vortex airflow with opposing impact force and shear force is formed in the inner wall area of ​​the drying pipe 1. This continuously dries the wet material clumps while initially breaking them up. Combined with the spiral guide ribs 11 on the inner wall of the drying pipe 1, the composite vortex airflow is made to flow along a specific wall-attached path, further ensuring the effective extension of the flow path. The upward spraying of the opposing hot airflow helps to increase the flow velocity of the composite vortex airflow for a second time, and helps the material to pass quickly through the shear zone between the auxiliary cone seat 2 and the inner wall of the drying pipe 1, avoiding the accumulation and blockage of material in the small shear zone.

[0048] Step 3: Some of the undispersed material clumps enter the shearing zone. Through the reverse rotation of the auxiliary cone seat 2, the material clumps are made to adhere to the spiral guide ribs 11. At the same time, several shearing edges 21 shear the material placed between the conical surface of the auxiliary cone seat 2 and the spiral guide ribs 11, thereby breaking up the material clumps a second time and further improving the overall drying effect of the material.

[0049] Step 4: The air pressure inside the drying tube 1 is monitored in real time by an air pressure sensor. When a large amount of material accumulates in the shearing zone and becomes blocked due to moisture and inability to be effectively broken up, the flow rate of hot air through the shearing zone decreases, causing an increase in the air pressure inside the drying tube 1. After the air pressure sensor detects the increase in air pressure, the control valve 26 opens and adjusts the opening amount according to the air pressure value. Excess hot air flows through the conical cavity 24 and the outlet cavity 25 into the outlet pipe, reducing the air pressure value. The material is intercepted by the arc-shaped filter screen 27, and the elastic scraper is carried by the air distribution pipe 31. The forward rotation of 37 scrapes away the material intercepted on the arc-shaped filter screen 27. During the process of hot airflow being discharged through the conical cavity 24 and the air outlet 25, the auxiliary conical seat 2 is subjected to additional heating treatment, which helps to improve the drying efficiency of the material clump in the shearing zone. Combined with the shearing treatment of the material clump by the auxiliary conical seat 2, the material clump is quickly broken up and discharged. The flow rate of hot airflow in the shearing zone is increased. The air pressure sensor detects that the air pressure inside the drying tube 1 has decreased, and the control valve 26 is closed to further maintain the flow rate of the material carried by the hot airflow, thereby completing the drying treatment of the material with high efficiency.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A collision-type drying mechanism for an airflow drying device, comprising a drying tube (1), and an outlet pipe and an inlet pipe fixedly connected at the top and bottom ends of the drying tube (1), characterized in that, Multiple equally spaced spiral guide ribs (11) are fixedly connected to the annular inner wall of the drying tube (1). The top and bottom sides of the drying tube (1) are respectively provided with auxiliary cone seats (2) for regulating air pressure and cooperating with the spiral guide ribs (11) to perform secondary shearing and crushing of the material clump, and diversion cone seats (3) to promote the formation of swirling flow of high temperature airflow. The top and bottom ends of the drying tube (1) are both conical. The thickness of the spiral guide rib (11) located inside the upper conical end of the drying tube (1) decreases from bottom to top. The distance between the upper conical surface of the auxiliary conical seat (2) and the inner wall of the upper conical end of the drying tube (1) decreases from bottom to top. Several shearing edges (21) are fixedly connected to the upper conical surface of the auxiliary conical seat (2). The auxiliary conical seat (2) is fixedly connected to a rotating pipe (22) that is rotatably connected to the air outlet pipe. The diversion conical seat (3) is fixedly connected to a diversion pipe (31) that is rotatably connected to the rotating pipe (22). The top of the diversion pipe (31) passes through the rotating pipe (22) and is fixedly connected to an air injection pipe (32) through a rotating joint. Several inclined material feeding strips (33) are fixedly connected to the conical surface of the diversion conical seat (3). Multiple L-shaped pipes (34) arranged in a ring array are fixedly connected to the outer wall of the gas distribution pipe (31). Multiple nozzles (35) are installed at equal intervals along the vertical direction on the L-shaped pipes (34), and the free ends of the nozzles (35) are inclined upwards. The direction of the free ends of the nozzles (35) is the same as the rotation direction of the flow-dividing cone seat (3). The rotation direction of the flow-dividing cone seat (3) is the same as the rotation direction of the spiral guide rib (11).

2. The collision-type drying mechanism for an airflow drying device according to claim 1, characterized in that, A motor (12) is bolted to the top of the drying tube (1), and a drive bevel gear (13) is fixedly mounted on the output shaft of the motor (12). A driven bevel gear (23) that meshes with the drive bevel gear (13) is fixedly mounted on both the rotating tube (22) and the air distribution tube (31).

3. The collision-type drying mechanism for an airflow drying device according to claim 1, characterized in that, The auxiliary conical seat (2) has a conical cavity (24) that penetrates its lower conical surface. The top of the conical cavity (24) has an air outlet cavity (25) that penetrates the top of the auxiliary conical seat (2). A control valve (26) is installed inside the air outlet cavity (25). An arc-shaped filter screen (27) that is flush with the bottom of the auxiliary conical seat (2) is installed inside the conical cavity (24). A pressure sensor is fixedly installed on the inner wall of the drying tube (1).

4. The collision-type drying mechanism for an airflow drying device according to claim 3, characterized in that, A support plate (36) is fixedly installed on the outer wall of the gas distribution pipe (31), and an elastic scraper (37) that is slidably connected to the bottom of the auxiliary conical seat (2) is fixedly connected to the support plate (36).

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