Airflow circulation cyclone type environment-friendly agricultural dust remover

Abstract

The airflow circulation cyclone type environment-friendly agricultural dusting machine comprises a machine barrel, a turbine is axially suspended at a bottom opening in the machine barrel, the turbine comprises a conical bucket barrel, and a plurality of first blades with double curved surfaces are fixedly arranged on the outer conical surface of the conical bucket barrel in the circumferential direction at equal intervals in a downward inclined mode; a flow guide part is axially suspended right above the turbine, the flow guide part comprises a cylinder, and a plurality of second straight-line curved-surface blades are fixedly arranged on the lower portion of the outer circumferential surface of the cylinder in the circumferential direction at equal intervals in a downward inclined mode; a first motor is fixedly arranged in the cylinder, and a power output shaft of the first motor vertically penetrates through the cylinder to be in transmission connection with a conical bucket barrel of the turbine. A flow restraining part is axially suspended at the top opening in the machine barrel and comprises a circular ring, and a plurality of third straight-line curved-surface blades are fixedly arranged on the outer circumferential surface of the circular ring in the circumferential direction at equal intervals in an upward inclined mode. The working effect of compressed air is good; the rotation degree of airflow in the machine barrel is increased, and the centrifugal force for carrying particulate matters is improved; particulate matter escape caused by self disturbance of dust-containing airflow before the dust-containing airflow enters the cyclone separator is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural dust removal equipment, and in particular relates to an airflow circulation cyclone type environmentally friendly agricultural dust remover. Background Art

[0002] Currently, the drying section of grain dryers typically uses a biomass hot air furnace for heating. The hot air outlet in the drying section uses negative pressure suction from a hot air blower, allowing the hot air to penetrate the vertically falling grain layer horizontally to dry it. During the drying process, the hot air outlet in the drying section of the grain dryer discharges dust-laden gas, impacting the external environment.

[0003] In the prior art, dust-laden gas is generally removed by a dust collector; such a dust collector is mainly composed of a frame, a barrel, an air inlet pipe, an air outlet pipe, a cyclone separator, a blower and ancillary parts; its dust removal mechanism is that the dust-laden gas is attracted by the fan and enters the barrel through the air inlet pipe, and spirals up along the barrel wall and enters the cyclone separator tangentially through the volute air inlet pipe. Due to the centrifugal force generated by the rotational inertia, the dust-laden gas rotates downward along the cyclone separator cylinder after entering, and separates the particulate matter in the gas when it reaches the bottom, and the dust is discharged through the blower. The filtered gas rotates upward due to the barrel structure, and enters the tail of the air inlet pipe tangentially through the exhaust pipe to form an internal circulation secondary filtration, and finally the purified airflow is discharged from the air outlet pipe at the top of the barrel.

[0004] However, the fan in the barrel of the existing dust collector is usually an ordinary axial flow fan, which has a poor compressed air work effect, resulting in a low degree of rotation of the airflow in the barrel and a low centrifugal force carrying the particles, affecting the subsequent separation effect of the particles entering the cyclone separator; at the same time, since the tangential inlet of the cyclone separator is set at the top of the barrel, if the rotation ability of the output airflow at the top of the barrel is large, it will disturb the particles entering the cyclone separator, causing some particles to be discharged through the outlet pipe with the airflow, reducing the dust removal effect. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides an air circulation cyclone type environmentally friendly agricultural dust collector. The specific technical solution is as follows: The present invention provides an airflow circulation cyclone type environmentally friendly agricultural dust collector, comprising a frame, a barrel, an air inlet pipe, an air outlet pipe, a cyclone separator, a volute air inlet pipe and an exhaust pipe thereof, and an air shut-off fan. A turbine is axially suspended at the bottom of the barrel. The turbine comprises a conical bucket. The outer conical surface of the conical bucket is fixed with a plurality of hyperbolic blades at equal intervals in the circumferential direction and inclined downward. A flow guide is axially suspended directly above the turbine. The flow guide comprises a cylinder. A plurality of blades with ruled curved surfaces are fixedly mounted on the lower portion of the outer circumference of the cylinder at equal intervals and tilted downward. The blades are fixedly connected to the inner wall of the cylinder. A motor is fixedly mounted within the cylinder. The power output shaft of the motor passes vertically through the cylinder and is in transmission connection with the cone barrel of the turbine. A flow suppressor is axially suspended at the top of the barrel. The flow suppressor includes a circular ring. A plurality of blades with straight curved surfaces are fixed on the outer circumference of the circular ring at equal intervals and tilted upward. The blades are fixed to the inner wall of the barrel.

[0006] As a preferred technical solution of the present invention, it also includes a unloading mechanism, which includes a buffer hopper axially connected to the ash discharge port at the bottom of the cyclone separator, the bottom of the buffer hopper is connected to the fan, and the external axial sealing sleeve of the buffer hopper is provided with a circular heating cylinder; the pipe mouth of the air outlet pipe is installed with a wind hood adapted thereto, and the wind hood is connected to the heating cylinder through an air duct, and an exhaust pipe is radially connected to one side of the heating cylinder.

[0007] As an optimal technical solution of the present invention, a wind drain groove with an inner end opening is provided in the exhaust pipe for horizontal sliding cooperation, and a breathable filter cloth is laid flat on the top of the wind drain groove; the bottom edge of the outer end of the wind drain groove is connected to an elastic component suspended horizontally on the bottom surface of the exhaust pipe.

[0008] As a preferred technical solution of the present invention, the elastic component includes a convex plate vertically fixed to the bottom edge of the outer end of the air discharge groove, and the inner side of the convex plate is vertically connected to a guide rod, and the gap of the guide rod passes through a limit plate vertically fixed to the bottom surface of the exhaust pipe. A spring is axially sleeved on the guide rod, and the inner end of the spring is connected to the limit plate, and the outer end is connected to the convex plate.

[0009] As an optimal technical solution of the present invention, the bottom of the buffer hopper is axially connected to a discharge pipe, and the bottom of the discharge pipe is connected to the fan; the discharge pipe is connected to the bottom surface of the heating cylinder through an air distribution pipe; the bottom surface of the air discharge trough is inclined toward the exhaust pipe side with an inclined plate.

[0010] As a preferred technical solution of the present invention, the buffer hopper is an integrated double-cone structure in series, wherein the middle cylindrical section is axially sleeved with a bearing, the outer circumference of the bearing is radially symmetrically connected with a scraper plate, and the longitudinal cross-sectional shape of the scraper plate is matched with the internal airspace gap formed by the heating cylinder and the buffer hopper; the bottom of the air duct is tangentially connected to the heating cylinder.

[0011] As a preferred technical solution of the present invention, it also includes a collection mechanism, which includes a silo cap connected to the discharge port of the fan, and a matching collection silo is inserted into the lower port of the silo cap, and the collection silo is elastically supported by a carrier assembly arranged on the bottom surface thereof; gate valve assemblies with gate plates are symmetrically arranged on the lower parts of the two outer side surfaces of the silo cap; when the rated weight of dust is collected in the collection silo, the collection silo compresses the carrier assembly downward to separate the top port of the silo cap, and at this time the two gate valve assemblies are started, and their respective gate plates are inserted into the silo cap relative to each other to close the lower port of the silo cap.

[0012] As a preferred technical solution of the present invention, the loading bin assembly includes a U-shaped frame, a loading plate is provided in the horizontal gap between the side walls of the U-shaped frame, a sleeve 1 is vertically connected to the middle of the bottom surface of the loading plate, the bottom opening of the sleeve 1 is sleeved with the gap at the top of the pillar vertically connected to the inner bottom surface of the U-shaped frame; a spring 2 is axially sleeved inside the sleeve 1, the top end of the spring 2 is connected to the inner top surface of the sleeve 1, and the bottom end thereof is connected to the top surface of the pillar.

[0013] As a preferred technical solution of the present invention, a locking assembly is provided on the inner bottom surface of the U-shaped frame symmetrically along the radial direction of the pillar; the locking assembly comprises an L-shaped plate fixed to the inner bottom surface of the U-shaped frame, a sleeve 2 with an opening facing away from the pillar is fixedly passed through the L-shaped plate, a top rod is passed through the gap in the axis of the sleeve 2, the inner end of the top rod is vertically connected to a locking block with a roller at the bottom, and the outer end of the top rod is vertically connected to a baffle placed on the outside of the cylinder 2, and the outer side of the baffle is vertically connected to a pull rod 1 passing through the gap corresponding to the side wall of the U-shaped frame; an axial sleeve is provided on the top rod There is a spring three, one end of which is connected to the baffle, and the other end is connected to the bottom surface of the sleeve two; one end of the sleeve is axially integrated with a funnel-shaped positioning tube, and the top surface of the positioning tube is provided with an annular groove at the contact point with the sleeve one; the top of the locking block is a right-angled trapezoidal structure, and its forward-extending acute angle portion is located directly below the positioning tube when the spring three is in a natural state; when the top opening of the collecting bin is separated from the lower opening of the bin cap, the loading plate presses down the sleeve one, and the positioning tube pushes the corresponding locking blocks to both sides at the same time, causing the acute angle portion of the locking block to be stuck in the groove.

[0014] As a preferred technical solution of the present invention, the gate valve assembly includes a right-angled suspension frame installed at the lower part of the corresponding side of the silo cap, and a gate plate is provided on the top of the suspension frame for horizontal sliding. A screw rod is provided for horizontal rotation directly above the gate plate, and a linkage block is screwed on the screw rod for transmission. The linkage block is vertically connected to the middle part of the outer side of the top surface of the gate plate; the outer end of the screw rod is axially connected to the power output end of the motor 2 arranged on the suspension frame.

[0015] The beneficial effects of the present invention are: 1. The design of the hyperbolic blades in the present invention, combined with the downward tilt angle, when the dust-laden gas enters from the bottom air inlet pipe, the turbine is driven by the motor to rotate at high speed, the compressed air has a better work effect, can more efficiently transfer kinetic energy to the airflow, and improve the degree of rotation of the airflow.

[0016] 2. When the airflow generated by the turbine in the present invention hits the blade 2 of the guide member, the ruled curved surface design of the blade 2 is conducive to a smooth transition of the airflow, guides the airflow, increases the rotation degree of the airflow in the barrel, and increases the centrifugal force carrying particulate matter.

[0017] 3. The upward rotating airflow reaching the top of the barrel in the present invention may have too strong a rotational inertia, and may easily form a vortex or excessive rotation near the top, causing some particles that should have been thrown to the tangential inlet of the cyclone separator by centrifugal force to be re-rolled and directly rushed to the air outlet. The three blades are tilted upward to form an inhibitory guide structure, which can effectively comb the over-rotating airflow, inhibit the formation of vortices at the top, and make the dust-laden airflow enter the cyclone separator more smoothly and orderly through the volute inlet pipe. It effectively reduces the escape of particles caused by the dust-laden airflow's own disturbance before entering the cyclone separator, ensures that the airflow entering the tangential inlet of the cyclone separator is stable and rotates moderately, which is conducive to the subsequent efficient centrifugal separation inside the cyclone separator; at the same time, it reduces the rotation ability of the output airflow so that the purified airflow can be discharged smoothly through the air outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A front view of the structure of the dust collector and the grain dryer of the present invention is shown; Figure 2 A schematic diagram of the three-dimensional structure of the dust collector of the present invention is shown; Figure 3 Shows a structural cross-sectional view of the dust collector of the present invention; Figure 4 A schematic diagram of the three-dimensional structure of the turbine in the dust collector of the present invention is shown; Figure 5 A schematic diagram of the three-dimensional structure of the flow guide member in the dust collector of the present invention is shown; Figure 6 A schematic diagram of the three-dimensional structure of the flow suppression member in the dust collector of the present invention is shown; Figure 7 A schematic diagram showing the structure of the dust collector of the present invention assembled with the discharge mechanism and the collection mechanism; Figure 8 A schematic diagram of the three-dimensional structure of the discharge mechanism in the dust collector of the present invention is shown; Figure 9 A cross-sectional view of the structure of the discharge mechanism in the dust collector of the present invention is shown; Figure 10 It shows a structural cross-sectional view of the discharge mechanism in the dust collector of the present invention from another perspective; Figure 11 A schematic diagram of the three-dimensional structure of the material collecting mechanism in the dust collector of the present invention is shown; Figure 12 A cross-sectional view of the structure of the material collecting mechanism in the dust collector of the present invention is shown; Figure 13 Shown Figure 12 A magnified view of the structure of part A in the middle; Figure 14 Shown Figure 12 A magnified view of the structure of part B in the middle; Figure 15 The diagram shows the internal structure of the alarm component of the material collecting mechanism in the dust collector of the present invention.

[0019] In the figure: 1. Frame; 2. Cylinder; 21. Air inlet pipe; 22. Air outlet pipe; 23. Turbine; 231. Cone bucket; 232. Blade 1; 24. Flow guide; 241. Cylinder; 242. Blade 2; 25. Motor 1; 26. Flow suppressor; 261. Ring; 262. Blade 3; 3. Cyclone separator; 31. Volute air inlet pipe; 32. Exhaust pipe; 4. Wind hood; 41. Air duct; 5. Discharge mechanism; 51. Buffer hopper; 52. Discharge pipe; 53. 3. Fan off; 54. Heating cylinder; 55. Exhaust duct; 56. Air discharge chute; 561. Breathable filter cloth; 562. Inclined plate; 57. Elastic component; 571. Convex plate; 572. Guide rod; 573. Limit plate; 574. Spring 1; 58. Air distributor; 59. Scraper plate; 591. Bearing; 6. Material collection mechanism; 61. Silo cap; 611. Air vent; 62. Material collection silo; 621. Handle; 63. Loading silo assembly; 631. U-shaped frame; 6311. Limit rod ; 6312, dust curtain; 632, loading plate; 6321, positioning groove; 633, pillar; 634, sleeve 1; 6341, stop cylinder; 6342, slot; 635, spring 2; 636, sleeve 2; 6361, L-shaped plate; 637, push rod; 6371, baffle; 6372, pull rod 1; 6373, pull handle; 638, locking block; 6381, roller; 639, spring 3; 64, gate valve assembly; 641, suspension frame; 642, gate Plate; 643, linkage block; 644, screw rod; 645, motor 2; 646, dust cover; 65, alarm component; 651, alarm light; 652, wire 1; 6521, contact 1; 653, insulating plate 1; 654, pull rod 2; 6541, pull ring; 6542, hook; 655, insulating plate 2; 656, wire 2; 6561, contact 2; 657, spring 4; 658, dust cover; 7, pad rack; 8, grain dryer; 81, drying section. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] Example 1 In order to solve the technical problems in the background technology, the following air circulation cyclone type environmentally friendly agricultural dust collector is provided: Combine Figures 1 to 6As shown, an air circulation cyclone type environmentally friendly agricultural dust collector comprises a frame 1, on which a barrel 2 is mounted, the bottom of the barrel 2 is connected to an air inlet pipe 21, the air inlet pipe 21 is connected to the hot air outlet of the drying section 81 of the grain dryer 8, and the top is connected to an air outlet pipe 22; a cyclone separator 3 is suspended on one side of the barrel 2, the tangential inlet of the cyclone separator 3 is connected to the top of the barrel 2 through a volute air inlet pipe 31, the exhaust pipe 32 at the center is tangentially connected to the tail of the air inlet pipe 21, the ash discharge port at the bottom is connected to the air shut-off fan 53, a turbine 23 is axially suspended at the bottom of the barrel 2, the turbine 23 comprises a conical bucket 231, the outer conical surface of the conical bucket 231 is circumferentially and inclined downwardly with a plurality of hyperbolic blades 232 fixed thereon; A guide member 24 is axially suspended directly above the turbine 23. The guide member 24 comprises a cylinder 241. A plurality of blades 242 with ruled curved surfaces are fixedly mounted on the lower portion of the outer circumference of the cylinder 241 at equal intervals and angled downward. The blades 242 are fixedly connected to the inner wall of the barrel 2. A motor 25 is fixedly mounted within the cylinder 241. The power output shaft of the motor 25 vertically passes through the cylinder 241 and is in transmission connection with the cone barrel 231 of the turbine 23. A flow suppressor 26 is axially suspended at the top of the barrel 2. The flow suppressor 26 includes a circular ring 261. A plurality of blades 262 with straight curved surfaces are fixed on the outer circumference of the circular ring 261 at equal intervals and tilted upward. The blades 262 are fixed to the inner wall of the barrel 2.

[0022] By adopting the above technical solution, the turbine 23 axially suspended at the bottom of the barrel 2 in the dust collector is composed of a conical bucket 231 and a plurality of downwardly inclined hyperbolic blades 232; wherein, the design of the hyperbolic blades, combined with the downward inclination angle, when the dust-laden gas enters from the bottom air inlet pipe 21, the turbine 23 is driven by the motor 25 to rotate at high speed, the compressed air has a better work effect, can more efficiently transfer kinetic energy to the airflow, and improves the degree of rotation of the airflow.

[0023] This dust collector features a flow guide 24 suspended axially above the turbine 23. This guide 24 consists of a cylinder 241 and a plurality of downwardly angled, ruled-curved blades 242, which are affixed to the inner wall of the barrel. When the airflow generated by the turbine 23 strikes the blades 242 of the flow guide 24, the ruled-curved design facilitates a smooth transition, guiding the airflow and increasing its rotation within the barrel 2, thereby enhancing the centrifugal force that carries particulate matter.

[0024] This dust collector features an axially suspended flow suppressor 26 at the top of barrel 2. This suppressor consists of a circular ring 261 and a plurality of upwardly inclined, ruled blades 262, which are fixedly attached to the inner wall of barrel 2. The upwardly rotating airflow reaching the top of barrel 2 may have excessive rotational inertia, easily forming vortices or excessive rotation near the top. This can cause some particles that would otherwise be flung toward the tangential inlet of cyclone separator 3 by centrifugal force to be re-entrained and directed toward outlet 22. Blade three 262 is tilted upward to form an inhibitory flow-guiding structure, which can effectively comb the over-rotating airflow and suppress the formation of vortex at the top, so that the dust-laden airflow can enter the cyclone separator 3 tangentially more smoothly and orderly through the volute air inlet pipe 31; it effectively reduces the escape of particles caused by the dust-laden airflow's own disturbance before entering the cyclone separator 3, and ensures that the airflow entering the tangential inlet of the cyclone separator 3 is stable and rotates moderately, which is conducive to the subsequent efficient centrifugal separation inside the cyclone separator 3; at the same time, it reduces the rotation ability of the output airflow so that the purified airflow can be discharged smoothly through the air outlet pipe 22.

[0025] Example 2 Combine Figures 7 to 10 As shown, based on the above embodiment, this embodiment further provides the following content: In this embodiment, if Figures 7 to 10 As shown, an air circulation cyclone type environmentally friendly agricultural dust collector also includes a unloading mechanism 5, which includes a buffer hopper 51 axially connected to the ash discharge port at the bottom of the cyclone separator 3, and the bottom of the buffer hopper 51 is connected to the fan 53, and the external axial sealing sleeve of the buffer hopper 51 is provided with a circular heating tube 54; the pipe mouth of the air outlet pipe 22 is installed with a wind hood 4 adapted thereto, and the wind hood 4 is connected to the heating tube 54 through the air duct 41, and the heating tube 54 is radially connected with an exhaust pipe 55.

[0026] By adopting the above technical solution, the buffer hopper 51 is provided to form a transition cavity between the ash discharge port of the cyclone separator 3 and the air shut-off fan 53. This cavity physically isolates the direct contact between the upward inward swirling airflow at the bottom of the cyclone separator 3 and the air shut-off fan 53; the dust discharged from the cyclone separator 3 first falls into the buffer hopper 51. This relatively low flow rate space provides an opportunity for the dust to settle. Even if there is a small amount of fine dust that is picked up by the upward inward swirling flow, after entering the buffer hopper 51, it will lose the power to move upward due to the expansion of the space and the sudden drop in the airflow speed, and will settle down again. By setting up the buffer hopper 51, the path for the upward inward swirling flow to directly suck in the newly discharged dust is cut off, effectively preventing the dust from being brought back into the upper airflow of the cyclone separator 3, thereby avoiding the loss of separation efficiency and ensuring that the collected dust can be discharged stably.

[0027] The gas discharged from the air outlet pipe 22 is a hot air flow that has been dust-removed and purified. This part of the waste heat is guided to the heating tube 54 through the wind hood 4 and the air duct 41. The heating tube 54 is sealed and arranged on the outside of the buffer hopper 51, forming an annular interlayer space between the two. The introduced hot air flow flows in this interlayer space, indirectly heating the wall of the buffer hopper 51. The heated wall of the buffer hopper 51 transfers heat to the dust accumulated inside it, so that the internal space of the buffer hopper 51 is maintained at a temperature higher than the ambient temperature. When the fan 53 is turned on periodically for unloading, there is a tendency for external cold air to be sucked into the buffer hopper 51. Since the buffer hopper 51 and the dust inside it are preheated and insulated, their temperature is higher than the dew point temperature, which significantly reduces the possibility of moisture condensation when the cold air contacts the low-temperature dust. This effectively prevents dust from solidifying and adhering to the inner wall of buffer hopper 51 due to moisture absorption, thus preventing dust from clumping. This ensures that dust can be discharged smoothly and without residue through buffer hopper 51 and fan 53, preventing blockage and ensuring the continuity and reliability of the dust removal system's discharge. This fully utilizes the waste heat in the purified hot air, which would otherwise be wasted, achieving energy recovery and energy conservation. Finally, the airflow, having completed its insulation task, is discharged through exhaust duct 55.

[0028] like Figure 8 and Figure 9 As shown, the exhaust pipe 55 is provided with an air discharge groove 56 with an inner end opening in a transverse sliding fit, and the top of the air discharge groove 56 is covered with a breathable filter cloth 561; the bottom edge of the outer end of the air discharge groove 56 is connected to an elastic component 57 suspended transversely on the bottom surface of the exhaust pipe 55.

[0029] By adopting the above technical solution, although most of the dust has been removed from the purified air flow, it may still contain some fine residual dust. After this air flow carrying residual heat and a small amount of fine dust completes the task of heat preservation of the buffer hopper 51, it needs to be discharged through the exhaust pipe 55. The air discharge trough 56 and the breathable filter cloth 561 on its top constitute a filtering device located on the exhaust path. When the air flow flows through the exhaust pipe 55, it must flow through the breathable filter cloth 561 on the top of the air discharge trough 56 before it can be discharged. The use of suitable mesh on the breathable filter cloth 561 can effectively intercept these residual fine dust carried in the air flow. The trapped dust will accumulate inside the air discharge trough 56 and the heating cylinder 54, making it difficult for dust to clog the filter cloth surface, and facilitating the subsequent centralized removal of the collected fine dust by opening the air discharge trough 56. This significantly reduces the dust content ultimately discharged into the atmosphere, meeting more stringent environmental protection requirements.

[0030] The elastic component 57 provides a laterally movable elastic support for the air vent 56. When the airflow pressure (wind pressure) in the exhaust pipe 55 changes, the force of the airflow acting on the air vent 56 will change accordingly. When the wind pressure increases, the thrust of the airflow on the air vent 56 increases, overcoming the elastic force of the elastic component 57 and pushing the air vent 56 to slide outward. This is equivalent to increasing the opening area between the air vent 56 and the outlet of the exhaust pipe 55, reducing the exhaust resistance. Conversely, when the wind pressure decreases, the rebound force of the elastic component 57 causes the air vent 56 to slide inward, reducing the exhaust opening area and increasing the airflow resistance. This increased resistance helps to slow down the speed of the hot air flow through the heating cylinder 54 and the exhaust pipe 55, and prolongs the time for the hot air flow to exchange heat with the buffer hopper 51 in the interlayer of the heating cylinder 54, thereby more effectively maintaining the temperature of the buffer hopper 51 and enhancing the thermal insulation and moisture-proof effect.

[0031] like Figure 8 and Figure 9 As shown, the elastic component 57 includes a protruding plate 571 vertically fixed to the bottom edge of the outer end of the air discharge groove 56, and the inner side of the protruding plate 571 is vertically connected to a guide rod 572, and the guide rod 572 passes through a limit plate 573 vertically fixed to the bottom surface of the exhaust pipe 55. A spring 574 is axially sleeved on the guide rod 572, and the inner end of the spring 574 is connected to the limit plate 573, and the outer end thereof is connected to the protruding plate 571.

[0032] By adopting this technical solution, spring 1 574 constantly exerts a spring force on the protruding plate 571 directed toward the interior of the exhaust duct 55. When the airflow thrust acting on the air vent 56 decreases, the spring force of spring 1 574 reliably pulls the air vent 56 inward, reducing the exhaust opening. The clearance fit between the guide rod 572 and the hole in the stop plate 573 constrains the air vent 56 from sliding axially along the guide rod 572.

[0033] like Figures 8 to 10 As shown, the bottom of the buffer hopper 51 is axially connected to a discharge pipe 52, and the bottom of the discharge pipe 52 is connected to a fan 53; the discharge pipe 52 is connected to the bottom surface of the heating cylinder 54 through an air distribution pipe 58; the bottom surface of the air discharge groove 56 is inclined toward the exhaust pipe 55 and an inclined plate 562 is provided.

[0034] By adopting the above technical solution, the air distribution pipe 58 can actively introduce part of the dust accumulated in the interlayer space at the bottom of the heating cylinder 54 into the discharge pipe 52; the introduced dust merges with the main material flow from the buffer hopper 51 in the discharge pipe 52, and is discharged together through the fan 53. The air distribution pipe 58 introduces part of the purified hot air from the heating cylinder 54 into the discharge pipe 52. This warm air flow introduced into the discharge pipe 52 forms a continuously flowing hot air barrier above the inlet of the fan 53, effectively preventing the external cold air from flowing back into the discharge pipe 52 and the bottom of the buffer hopper 51 when the fan 53 is turned on for unloading. At the same time, this hot air can also further heat and disturb the dust in the discharge pipe 52 to reduce the risk of dust blockage in the discharge pipe 52.

[0035] The dust that falls into the air vent 56 falls onto the inclined plate 562 under the action of gravity. The inclined angle guides the dust to slide and accumulate on the inner side of the air vent 56. When the air distribution pipe 58 guides part of the hot air and dust to the downpipe 52, it will generate a certain amount of air flow at the bottom of the heating cylinder 54. The inclined plate 562 guides the dust to the area of the heating cylinder 54, making it easier for this part of the air flow to sweep the accumulated dust into the inlet range of the air distribution pipe 58, so that it is actively sucked in and transported to the downpipe 52 for recycling; it promotes the self-cleaning of the bottom of the heating cylinder 54, reduces the long-term accumulation of dust in this area, and reduces the frequency and difficulty of manual cleaning.

[0036] like Figure 9 and Figure 10 As shown, the buffer hopper 51 is an integrated double-cone structure connected in series, wherein the middle cylindrical section is axially sleeved with a bearing 591, and the outer peripheral surface of the bearing 591 is radially symmetrically connected to a scraper plate 59, and the longitudinal cross-sectional shape of the scraper plate 59 is matched with the internal airspace gap formed by the heating cylinder 54 and the buffer hopper 51; the bottom of the air duct 41 is tangentially connected to the heating cylinder 54.

[0037] By adopting the above technical solution, the bottom of the air duct 41 is tangentially connected to the heating cylinder 54, so that the hot air entering the interlayer space between the heating cylinder 54 and the buffer hopper 51 forms a rotating airflow; the buffer hopper 51 adopts an integrated series double-cone structure, the upper cone expands the sedimentation space, the lower cone focuses on unloading, and the middle cylindrical section is used for the outer sleeve bearing 591.

[0038] Tangential airflow creates a stable swirling airflow field within the annular channel formed by the double-conical buffer hopper 51 and the cylindrical heating cylinder 54. This swirling airflow evenly sweeps across the entire outer surface of the buffer hopper 51, avoiding potential localized overheating or heating dead zones associated with straight-through airflow. This ensures more uniform and efficient heat preservation of the dust inside the buffer hopper 51.

[0039] Driven by the rotating airflow within the interlayer space, scraper plate 59 is subjected to the tangential force of the airflow, driving bearing 591 and scraper plate 59 to continuously rotate about the axis of buffer hopper 51. The rotation of scraper plate 59 continuously scrapes the inner and outer walls and bottom wall of the annular interlayer space. This continuous scraping effectively prevents fine dust that enters the interlayer space with the hot air and settles in the airflow deceleration area from accumulating and hardening on the inner and outer walls, and also scrapes dust that settles on the bottom wall of the interlayer space into the air distribution pipe 58. This maintains the unobstructed flow of the interlayer space, ensuring smooth hot air flow and stable heat transfer efficiency.

[0040] Example 3 Combine Figure 7 as well as Figures 11 to 15 As shown, based on the above embodiment, this embodiment further provides the following content: In this embodiment, if Figure 11 and Figure 12 As shown, an air circulation cyclone type environmentally friendly agricultural dust collector also includes a collecting mechanism 6, which includes a silo cap 61 connected to the discharge port of the air shut-off fan 53, and a matching collecting silo 62 is inserted into the lower port of the silo cap 61, and the collecting silo 62 is elastically supported by a carrier assembly 63 arranged on the bottom surface thereof; gate valve assemblies 64 with gate plates 642 are symmetrically arranged on the lower parts of the two outer side surfaces of the silo cap 61; when the rated weight of dust is collected in the collecting silo 62, the collecting silo 62 compresses the carrier assembly 63 downward to separate the top port of the silo cap 61, and at this time, the two gate valve assemblies 64 are started, and their respective gate plates 642 are relatively inserted into the silo cap 61 to close the lower port of the silo cap 61.

[0041] By adopting the above technical solution, when the collection bin 62 is not fully loaded, the top opening of the loading bin assembly 63 is tightly plugged into the bottom opening of the silo cap 61 under the elastic support of the loading bin assembly 63, allowing dust to fall smoothly into the collection bin 62. The plug-in structure of the silo cap 61 and the collection bin 62 effectively prevents dust from leaking at the interface. At this time, the gate 642 of the gate valve assembly 64 is in a retracted state.

[0042] When the dust in the aggregate silo 62 reaches the rated weight, its gravity overcomes the supporting elastic force of the carrier assembly 63, causing the aggregate silo 62 to sink as a whole, and its top opening subsequently detaches from the bottom opening of the silo cap 61. At this time, the two gate valve assemblies 64 are manually activated, and their respective gate plates 642 are inserted into the silo cap 61 from both sides. The gate plates 642 on both sides close and dock inside the silo cap 61, completely sealing the bottom opening of the silo cap 61. At this point, the silo cap 61 itself becomes a sealed temporary storage silo that can temporarily store the dust continuously discharged from the fan 53. The operator can calmly remove the full aggregate silo 62 and replace it with an empty one while the equipment is running uninterrupted. After the new empty aggregate silo 62 is in place, the top opening is resealed and plugged into the bottom opening of the silo cap 61 under the elastic force of the carrier assembly 63. At this time, the gate plate 642 of the gate valve assembly 64 is relatively retracted, releasing the seal on the lower opening of the silo cap 61, and the dust temporarily stored in the silo cap 61 falls into the new collecting silo, and the system resumes normal collection.

[0043] Preferably, if Figure 11 As shown, the top surface of the silo cap 61 is provided with air vents 611 with filter cloth. The air vents 611 allow air to flow in or out slowly due to the permeability of the filter cloth, thus preventing system instability caused by sudden changes in air pressure, such as preventing vacuum suction from interfering with dust settling or positive pressure from causing dust to escape.

[0044] Preferably, if Figure 11 and Figure 12 As shown, handles 621 are symmetrically provided on both sides of the aggregate bin 62. The provided handles 621 facilitate manual or mechanical carrying of the aggregate bin 62.

[0045] Preferably, if Figures 11 to 13 As shown, a front-opening positioning groove 6321 is provided in the middle of the top surface of the loading plate 632, and the collecting bin 62 is interlocked with the bottom and the positioning groove 6321. The positioning groove 6321 can not only quickly position the collecting bin 62 and insert it into the bin cap 61, but also maintain the sinking stability of the collecting bin 62 during the collecting process.

[0046] like Figures 11 to 13 As shown, the carrier assembly 63 includes a U-shaped frame 631, and a carrier plate 632 is provided in the horizontal gap between the side walls of the U-shaped frame 631. A sleeve 1 634 is vertically connected to the middle of the bottom surface of the carrier plate 632. The bottom of the sleeve 1 634 is gap-engaged with the top of the pillar 633 vertically connected to the inner bottom surface of the U-shaped frame 631; a spring 2 635 is axially sleeved in the sleeve 1 634, and the top end of the spring 2 635 is connected to the inner top surface of the sleeve 1 634, and the bottom end is connected to the top surface of the pillar 633.

[0047] By adopting the above technical solution, the collection bin 62 is supported on the carrier plate 632, and the carrier plate 632 achieves vertical displacement through the nested structure of sleeve 1 634 and support 633. Spring 2 635 is pre-stressed between sleeve 1 634 and support 633. When dust accumulates in the collection bin 62 to the rated weight, gravity compresses spring 2 635, causing the carrier plate 632 to drive the collection bin 62 downward. The side walls of the U-shaped frame 631 limit the horizontal displacement of the carrier plate 632, preventing the collection bin 62 from being offset by external vibration or airflow disturbances; the nested cooperation of sleeve 1 634 and support 633 ensures that the carrier plate 632 can only be raised and lowered smoothly in the vertical direction, avoiding tilting and jamming. After replacing the empty collection bin 62, spring 2 635 rebounds to push the carrier plate 632 back to its original position, maintaining the alignment between the collection bin 62 and the lower opening of the silo cap 61.

[0048] Preferably, if Figures 11 to 13 As shown, a pair of limiting rods 6311 are vertically symmetrically provided on the inner sidewalls of the U-shaped frame 631. The ends of the loading plate 632 are longitudinally slidably engaged with the corresponding limiting rods 6311. The provided limiting rods 6311 facilitate the loading plate 632 to fall horizontally and stably when subjected to pressure from the collecting bin 62.

[0049] Preferably, if Figures 11 to 13 As shown, a retractable dust curtain 6312 is sealed between the side edge of the loading plate 632 and the corresponding bottom edge of the U-shaped frame 631. The dust curtain 6312 can effectively prevent dust from the structural components inside the U-shaped frame 631, and its retractable design can adapt to the synchronous lifting and lowering of the loading plate 632.

[0050] Preferably, if Figure 7 As shown, a backing plate rack 7 is provided in front of the U-shaped frame 631. When the top opening of the collecting bin 62 is separated from the bottom opening of the bin cap 61, the loading plate 632 is flush with the top surface of the backing plate rack 7. The backing plate rack 7 can serve as a storage and standing platform when replacing the collecting bin 62.

[0051] like Figure 13As shown, a locking assembly is provided on the inner bottom surface of the U-shaped frame 631 radially symmetrically along the pillar 633; the locking assembly includes an L-shaped plate 6361 fixed to the inner bottom surface of the U-shaped frame 631, a sleeve 2 636 with an opening facing away from the pillar 633 is fixedly passed through the L-shaped plate 6361 horizontally, a top rod 637 is passed through the central axis gap of the sleeve 2 636, the inner end of the top rod 637 is vertically connected to a locking block 638 with a roller 6381 at the bottom, and the outer end is vertically connected to a baffle 6371 placed on the outer side of the cylinder 241, and the outer side of the baffle 6371 is vertically connected to a pull rod 1 6372 passing through the corresponding side wall of the U-shaped frame 631; a spring 3 639 is axially sleeved on the top rod 637, One end of the spring three 639 is connected to the baffle 6371, and the other end is connected to the bottom surface of the sleeve two 636; the end of the sleeve one 634 is axially integrated with a funnel-shaped positioning tube 6341, and the top surface of the positioning tube 6341 is provided with an annular groove 6342 at the contact point between the sleeve one 634 and the top surface; the locking block 638 is a right-angled trapezoidal structure, and its forward-extending acute angle portion is located directly below the positioning tube 6341 when the spring three 639 is in a natural state; when the top opening of the collecting bin 62 is separated from the lower opening of the bin cap 61, the loading plate 632 presses down the sleeve one 634, and the positioning tube 6341 pushes the corresponding locking block 638 to both sides at the same time, causing the acute angle portion of the locking block 638 to be stuck in the groove 6342.

[0052] By adopting the above technical solution, when the dust in the aggregate bin 62 reaches the rated weight, the loading plate 632 presses down, causing the sleeve 1 634 to drive the stopper 6341 downward. The conical surface of the stopper 6341 presses the right-angled trapezoidal slopes of the locking blocks 638 on both sides, forcing them to move outward, overcoming the tension of the spring 3 639. When the sleeve 1 634 drops to the lowest position, the sharp corner of the locking block 638 is snapped into the annular groove 6342 of the stopper 6341 under the rebound action of the spring 3 639, forming a mechanical hard lock. This can firmly lock the loading plate 632 in a compressed state, preventing it from accidentally rising due to the rebound force of the spring 2 635, and ensuring that the aggregate bin 62 is always separated from the lower opening of the bin cap 61. This ensures that the operator has sufficient and safe time to replace the aggregate bin, and that the lower opening of the bin cap 61 is reliably closed by the gate 642.

[0053] When a new empty material collection bin 62 is placed on the locked and sunken loading plate 632, the operator pulls the first lever 6372 to the sides, causing the sharp corners of the locking block 638 to disengage from the slots 6342. Subsequently, under the restoring force of the second spring 635, the loading plate 632, the first sleeve 634, the stopper 6341, and the new empty material collection bin 62 are lifted and reset as a whole until the top of the material collection bin 62 is tightly re-engaged with the bottom of the bin cap 61. Simultaneously, the locking block 638, under the action of the third spring 639, automatically returns to its initial position, ready for the next locking trigger.

[0054] Preferably, if Figure 13 As shown, the outer end of the pull rod 6372 is axially connected to a pull handle 6373. The pull handle 6373 is provided to facilitate manual pulling to release the locked state.

[0055] like Figure 11 、 Figure 12 and Figure 14 As shown, the gate valve assembly 64 includes a right-angled suspension frame 641 installed at the lower part of the corresponding side of the silo cap 61, and a gate plate 642 is provided on the top of the suspension frame 641 for horizontal sliding. A screw rod 644 is provided for horizontal rotation directly above the gate plate 642, and a linkage block 643 is screwed on the screw rod 644 for transmission. The linkage block 643 is vertically connected to the middle part of the outer side of the top surface of the gate plate 642; the outer end of the screw rod 644 is axially connected to the power output end of the motor 2 645 provided on the suspension frame 641.

[0056] By employing this technical solution, the gate valve assembly 64 seals the lower opening of the silo cap 61 when the silo 62 is fully loaded and descending. This creates a temporary storage silo during silo replacement, ensuring continuous operation of the dust removal system and preventing dust leakage. The symmetrically designed gate plates 642 can be inserted simultaneously and relative to each other into the silo cap 61. The transmission mechanism, consisting of a screw rod 644 and a linkage block 643, converts the rotational motion of motor 2 645 into horizontal linear motion of the gate plate 642.

[0057] Preferably, if Figure 14 As shown, a dust cover 646 is provided on the top of the suspension frame 641. The dust cover 646 can completely shield the exposed transmission components such as the screw rod 644 and the linkage block 643 in a closed space, preventing dust from adhering to the screw rod 644 thread or the sliding surface of the linkage block 643, preventing transmission jamming and increased movement resistance caused by dust accumulation, and ensuring that the insertion or withdrawal of the gate 642 is always smooth and reliable.

[0058] Example 4 Combine Figure 11 、 Figure 12 and Figure 15 As shown, based on the above embodiment, this embodiment further provides the following content: In this embodiment, an alarm component 65 is provided on the outer surface of the silo cap 61; the alarm component 65 includes an alarm light 651 provided on the silo cap 61 and having a built-in rechargeable battery, and two wires 652 connected in series with its internal circuit are provided on both sides of the alarm light 651, and the ends of the two wires 652 are respectively connected to contacts 6521, and an insulating plate 653 is vertically connected to the outer surface of the silo cap 61, and a dust cover 658 is provided on the top surface of the insulating plate 653, and two contacts 6521 are symmetrically fixed on both sides of the top surface of the insulating plate 653; a pull rod 654 is passed through the vertical gap in the middle of the insulating plate 653, and the top of the pull rod 654 is vertically connected to the insulating plate 655, and contacts 6561 are symmetrically fixed on both sides of the bottom surface of the insulating plate 655. , the two contacts 2 6561 are connected by wire 2 656; a spring 4 657 is axially sleeved on the pull rod 2 654, the top of the spring 4 657 is connected to the insulating plate 2 655, and the bottom end is connected to the insulating plate 1 653; the bottom end of the pull rod 2 654 is axially connected to a pull ring 6541, and a hook 6542 is rotatably connected to the outer facade of the aggregation bin 62; before aggregation, the hook 6542 is hooked with the pull ring 6541, the contact 1 6521 and the contact 2 6561 are not in contact, and the alarm light 651 does not sound an alarm; after aggregation, when the top opening of the aggregation bin 62 is separated from the lower opening of the bin cap 61, the pull rod 2 654 is pulled to drive the insulating plate 2 655 to compress the spring 4 657, causing the contact 1 6521 to contact the contact 2 6561, and the alarm light 651 emits an audible and visual alarm signal.

[0059] By adopting the above technical solution, when the aggregate hopper 62 is unloaded, the hook 6542 hooks with the pull ring 6541, spring four 657 is in a naturally extended state, contact one 6521 separates from contact two 6561, and the circuit is disconnected. When the aggregate hopper 62 is fully loaded and falls away from the hopper cap 61, the hook 6542 pulls down on the pull ring 6541, driving the pull rod two 654 downward. The insulating plate two 655 compresses the spring four 657, and contact two 6561 contacts the corresponding contact one 6521, making the circuit conductive and the alarm light 651 sound and light alarm. The mechanical structure directly senses the displacement state of the aggregate hopper 62, providing real-time feedback on the disengagement action without the need for additional sensors. The alarm signal is synchronized with the full disengagement of the aggregate hopper 62, accurately indicating the replacement time and the start time of the gate 642 closure, avoiding human error. The dust cover 658 covers the contact area to prevent dust accumulation from causing poor contact and ensure stable circuit on-off. When replacing a new empty aggregate bin 62, the operator releases the hook between the draw hook 6542 and the draw ring 6541, the spring 4 657 automatically resets, the contact 1 6521 and the contact 2 6561 separate, the circuit is disconnected, and the alarm light 651 stops the sound and light alarm.

[0060] The working principle and use process of the present invention: When the present invention is in use, dust-laden gas enters the bottom of barrel 2 from grain dryer 8 through air inlet duct 21. Turbine 23, driven by motor 1 25, accelerates the airflow and spins it downward, enhancing the centrifugal force on particulate matter. Blade 2 242 of flow guide 24 guides the airflow upward in a spiral along the inner wall of barrel 2, strengthening its rotational inertia. When the rotating airflow reaches the top of barrel 2, blade 3 262 of flow suppressor 26 suppresses excessive rotation, reducing the risk of particulate matter escaping. The rotating airflow enters cyclone separator 3 tangentially through volute inlet duct 31, where dust is thrown toward the barrel wall due to centrifugal force and settles. The dust is discharged through buffer hopper 51 and air shut-off fan 53; the purified gas returns tangentially from exhaust duct 32 to the tail of air inlet duct 21 for secondary filtration before being discharged through outlet duct 22.

[0061] Hot air from the outlet duct 22 is directed tangentially through the hood 4 and duct 41 into the heating cylinder 54, heating the outer wall of the buffer hopper 51 and preventing dust from becoming damp and hardening inside. Some of the hot air enters the discharge pipe 52 through the air distribution pipe 58, assisting dust flow. The scraper 59, driven by the tangential force of the airflow, rotates continuously, sweeping dust accumulated in the space between the heating cylinder 54 and the buffer hopper 51 into the discharge pipe 52, maintaining an unobstructed space and ensuring smooth hot air flow and stable heat transfer efficiency. Excess heat is discharged through the exhaust duct 55, and the air pressure is regulated by the air vent 561 through the air filter cloth 561.

[0062] The dust is discharged into the silo cap 61 through the fan 53 and falls into the aggregate silo 62. When the dust reaches the rated weight, the aggregate silo 62 compresses the spring 2 635 of the carrier assembly 63 and moves it downward, causing it to detach from the lower opening of the silo cap 61. At this time, the hook 6542 in the alarm assembly 65 pulls down the pull rod 2 654 to connect the contact 1 6521 and the contact 2 6561, triggering the alarm light 651 to sound and light alarm, prompting the operator to start the gate valve assembly 64. The screw 644 pushes the double-sided gate plates 642 to relatively insert into the silo cap 61, closing the lower opening to form a temporary storage space. When the aggregate silo 62 moves downward, the stop cylinder 6341 of the carrier assembly 63 triggers the locking block 638 to snap into the slot 6342, locking the position; after replacing the empty aggregate silo 62, it resets and the system continues to operate.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air circulation cyclone type environmentally friendly agricultural dust collector, comprising a frame (1), a barrel (2), an air inlet pipe (21), an air outlet pipe (22), a cyclone separator (3) and its volute air inlet pipe (31) and exhaust pipe (32) and a fan (53), characterized in that: A turbine (23) is axially suspended at the bottom of the barrel (2), and the turbine (23) includes a cone barrel (231). The outer cone surface of the cone barrel (231) is fixed with a plurality of hyperbolic blades (232) at equal intervals in the circumferential direction and tilted downward. A guide member (24) is axially suspended directly above the turbine (23), and the guide member (24) includes a cylinder (241). A plurality of blades (242) with straight curved surfaces are fixedly arranged at equal intervals in the circumferential direction on the lower portion of the outer circumference of the cylinder (241) and tilted downward. The blades (242) are fixedly connected to the inner wall of the barrel (2). A motor (25) is fixedly arranged in the cylinder (241), and a power output shaft of the motor (25) vertically passes through the cylinder (241) and is transmission-connected to the cone barrel (231) of the turbine (23). A flow suppressor (26) is axially suspended at the top of the barrel (2), and the flow suppressor (26) comprises a circular ring (261). A plurality of blades (262) with straight curved surfaces are fixedly arranged on the outer peripheral surface of the circular ring (261) at equal intervals in the circumferential direction and tilted upward, and the blades (262) are fixedly connected to the inner wall of the barrel (2).

2. The air circulation cyclone type environmentally friendly agricultural dust collector according to claim 1, characterized in that: The utility model also includes a discharge mechanism (5), wherein the discharge mechanism (5) includes a buffer hopper (51) axially connected to the ash discharge port at the bottom of the cyclone separator (3), the bottom of the buffer hopper (51) is connected to the fan (53), and the outer axial sealing sleeve of the buffer hopper (51) is provided with a circular heating cylinder (54); the pipe mouth of the air outlet pipe (22) is installed with a wind cover (4) adapted thereto, the wind cover (4) and the heating cylinder (54) are connected through an air duct (41), and an exhaust pipe (55) is radially connected to one side of the heating cylinder (54).

3. The air circulation cyclone type environmentally friendly agricultural dust collector according to claim 2, characterized in that: The exhaust pipe (55) is provided with an air discharge groove (56) with an inner end opening in a transverse sliding fit, and a breathable filter cloth (561) is laid flat on the top of the air discharge groove (56); the bottom edge of the outer end of the air discharge groove (56) is connected to an elastic component (57) suspended transversely on the bottom surface of the exhaust pipe (55).

4. The air circulation cyclone type environmentally friendly agricultural dust collector according to claim 3, characterized in that: The elastic component (57) includes a convex plate (571) vertically fixed to the bottom edge of the outer end of the air discharge groove (56); the inner side of the convex plate (571) is vertically connected to a guide rod (572); the guide rod (572) passes through a limit plate (573) vertically fixed to the bottom surface of the exhaust pipe (55); a spring (574) is axially sleeved on the guide rod (572); the inner end of the spring (574) is connected to the limit plate (573), and the outer end thereof is connected to the convex plate (571).

5. The air circulation cyclone type environmentally friendly agricultural dust collector according to claim 3, characterized in that: The bottom of the buffer hopper (51) is axially connected to a discharge pipe (52), and the bottom of the discharge pipe (52) is connected to a fan (53); the discharge pipe (52) is connected to the bottom surface of the heating cylinder (54) through an air distribution pipe (58); and an inclined plate (562) is provided on the inner bottom surface of the air discharge groove (56) toward the exhaust pipe (55).

6. The air circulation cyclone type environmentally friendly agricultural dust collector according to claim 5, characterized in that: The buffer hopper (51) is an integrated double-cone structure connected in series, wherein the central cylindrical section is axially sleeved with a bearing (591), and the outer peripheral surface of the bearing (591) is radially symmetrically connected with a scraper plate (59), and the longitudinal cross-sectional shape of the scraper plate (59) is matched with the internal airspace gap formed by the heating cylinder (54) and the buffer hopper (51); the bottom of the air duct (41) is tangentially connected to the heating cylinder (54).

7. The air circulation cyclone type environmentally friendly agricultural dust collector according to claim 1, characterized in that: The material collecting mechanism (6) further comprises a silo cap (61) connected to the discharge port of the air shut-off fan (53), a silo cap (61) having a silo (62) adapted thereto inserted into the lower port of the silo cap (61), and the silo (62) being elastically supported by a carrier assembly (63) arranged on the bottom surface thereof; gate valve assemblies (64) with gate plates (642) are symmetrically arranged on the lower portions of the two outer side surfaces of the silo cap (61); when dust of a rated weight is collected in the silo (62), the silo (62) compresses the carrier assembly (63) downwards so that its top port is separated from the lower port of the silo cap (61), and at this time, the two gate valve assemblies (64) are started, and their respective gate plates (642) are relatively inserted into the silo cap (61) to close the lower port of the silo cap (61).

8. The air circulation cyclone type environmentally friendly agricultural dust collector according to claim 7, characterized in that: The carrier assembly (63) includes a U-shaped frame (631), a carrier plate (632) is provided in the horizontal gap between the side walls of the U-shaped frame (631), a sleeve (634) is vertically connected to the middle of the bottom surface of the carrier plate (632), the bottom of the sleeve (634) is sleeved with the top of the pillar (633) vertically connected to the inner bottom surface of the U-shaped frame (631); a spring (635) is axially sleeved inside the sleeve (634), the top end of the spring (635) is connected to the inner top surface of the sleeve (634), and the bottom end is connected to the top surface of the pillar (633).

9. The air circulation cyclone type environmentally friendly agricultural dust collector according to claim 8, characterized in that: A locking assembly is provided on the inner bottom surface of the U-shaped frame (631) in radial symmetry along the pillar (633); the locking assembly comprises an L-shaped plate (6361) fixed on the inner bottom surface of the U-shaped frame (631), a sleeve (636) with an opening facing away from the pillar (633) is fixedly passed through the L-shaped plate (6361) in a transverse direction, a top rod (637) is passed through the central axis gap of the sleeve (636), the inner end of the top rod (637) is vertically connected to a locking block (638) with a roller (6381) at the bottom, and the outer end thereof is vertically connected to a baffle (6371) placed on the outer side of the cylinder (241), and the outer side of the baffle (6371) is vertically connected to a pull rod (6372) passing through the corresponding side wall of the U-shaped frame (631); a spring (639) is axially sleeved on the top rod (637). One end of the spring three (639) is connected to the baffle (6371), and the other end is connected to the bottom surface of the sleeve two (636); the end of the sleeve one (634) is axially integrated with a funnel-shaped positioning tube (6341), and the top surface of the positioning tube (6341) is provided with an annular groove (6342) at the contact point between the sleeve one (634) and the top surface; the locking block (638) is a right-angled trapezoidal structure, and its forward-extending acute angle portion is located directly below the positioning tube (6341) when the spring three (639) is in a natural state; when the top opening of the collecting bin (62) is separated from the lower opening of the bin cap (61), the loading plate (632) presses down the sleeve one (634), and the positioning tube (6341) pushes the corresponding locking block (638) to both sides at the same time, causing the acute angle portion of the locking block (638) to be stuck in the groove (6342).

10. The air circulation cyclone type environmentally friendly agricultural dust collector according to claim 7, characterized in that: The gate valve assembly (64) includes a right-angled suspension frame (641) installed at the lower part of the corresponding side surface of the silo cap (61); a gate plate (642) is horizontally slidably mounted on the top of the suspension frame (641); a screw rod (644) is horizontally rotatably mounted directly above the gate plate (642); a linkage block (643) is screwed on the screw rod (644); and the linkage block (643) is vertically connected to the middle part of the outer side of the top surface of the gate plate (642); the outer end of the screw rod (644) is axially connected to the power output end of the second motor (645) arranged on the suspension frame (641).

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