Large Cyclone Powder Chamber Secondary Recycling and Anti-Powder Accumulation Device

Abstract

This utility model relates to the field of powder chamber technology. One embodiment of this utility model provides a two-stage anti-dust collection device for a large cyclone powder chamber, including support legs. A large cyclone separator is fixedly connected to the side of the support legs. A back-blowing dust removal component is provided on the side of the large cyclone separator. The back-blowing dust removal component includes a connecting pipe. One end of the connecting pipe passes through the side of the large cyclone separator, and the other end of the connecting pipe away from the large cyclone separator passes through the powder chamber. An exhaust fan is provided on the inner wall of the powder chamber, and a rotary vane filter is provided on the inner wall of the powder chamber. A motor is fixedly connected to the inner wall of the powder chamber, and a threaded rod is fixedly connected to the output shaft of the motor. This technical solution solves the technical problem in related / existing technologies that two-stage anti-dust collection devices for large cyclone powder chambers cannot prevent dust from accumulating in difficult-to-clean locations and cannot reduce the dust concentration.

Description

Technical Field

[0001] The embodiments of this utility model relate to the field of powder chamber technology, specifically to a two-stage recovery and anti-powder accumulation device for a large cyclone powder chamber. Background Technology

[0002] The large cyclone powder booth secondary recovery and anti-powder accumulation device is mainly used in the powder production process to help improve dust recovery efficiency and prevent powder from accumulating in the equipment. It consists of a cyclone separator and an auxiliary anti-powder accumulation device, and is commonly used in powder processing, pharmaceutical, chemical, and food industries.

[0003] According to a public disclosure of an explosion-proof large cyclone powder recycling system (publication number: CN 217120655 U), it includes a powder spraying chamber; a water fire sprinkler system is installed on the ceiling of the powder spraying chamber; a large cyclone separator and a secondary dust collector are connected in sequence through the air duct; a one-way explosion-proof valve is connected between the large cyclone separator and the secondary dust collector, and the secondary dust collector is connected to a flameless explosion relief valve; the one-way explosion-proof valve and the flameless explosion relief valve form an interlocking device.

[0004] The aforementioned application, through the cooperation of components such as water fire sprinklers and large cyclone separators, fails to solve the problem of dust accumulation in hard-to-clean locations and the inability to reduce dust concentration. This results in dust accumulation at rounded corners, making cleaning inconvenient, increasing environmental pollution and impacting workers' health, and requires improvement. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this utility model provide a secondary recovery and anti-powder accumulation device for a large cyclone powder chamber, which solves the technical problem that the secondary recovery and anti-powder accumulation device for a large cyclone powder chamber cannot effectively maintain a suitable temperature inside the chamber in related technologies / existing technologies.

[0006] According to one aspect, at least one embodiment of the present invention provides a two-stage recovery and anti-powder accumulation device for a large cyclone powder chamber, including a support leg. A large cyclone separator is fixedly connected to the side of the support leg. A back-blowing ash removal component is provided on the side of the large cyclone separator. The back-blowing ash removal component includes a connecting pipe. One end of the connecting pipe passes through the side of the large cyclone separator, and the end of the connecting pipe away from the large cyclone separator passes through the powder chamber. An exhaust fan is provided on the inner wall of the powder chamber, and a rotary vane filter is provided on the inner wall of the powder chamber. A fixed... A motor is connected to the powder chamber. A threaded rod is fixedly connected to the output shaft of the motor. A threaded sleeve is threadedly connected to the circumferential surface of the threaded rod. A limit rod is fixedly connected to the side of the motor. The end of the limit rod away from the motor passes through the side of the threaded sleeve. A pressing rod is fixedly connected to the side of the threaded sleeve. An outer shell is fixedly connected to the inner wall of the powder chamber. A rotating shaft is rotatably connected to the inner wall of the outer shell. Fan blades are fixedly connected to the circumferential surface of the rotating shaft. A diagonal rod is fixedly connected to the circumferential surface of the rotating shaft. A drag reducer is provided at the top of the large cyclone separator.

[0007] For example, in at least one embodiment of the present invention, the large cyclone powder room secondary recycling anti-powder accumulation device further includes: the inclined rod is located on the displacement trajectory of the extrusion rod, the fan blade is located on the inner wall of the powder room, the inner wall of the outer shell is provided with a ventilation port, and the appearance of the drag reducer is set as a volute. This design is beneficial to extruding the inclined rod when the extrusion rod moves.

[0008] For example, in at least one embodiment of the present invention, the large cyclone dust chamber secondary recycling anti-dust device further includes: a plurality of ventilation openings and a plurality of fan blades arranged in a circumferential array on the circumferential surface of the rotating shaft. The design of the ventilation openings is conducive to the wind force generated by the rotation of the fan blades being able to pass through the ventilation openings.

[0009] For example, in at least one embodiment of the present invention, a two-stage recovery and anti-powder-accumulation device for a large cyclone dust chamber is provided, which further includes: a dust collection bucket fixedly connected to the side of the support leg, a dredging pipe penetrating the side of the large cyclone separator, and a powder outlet pipe penetrating the bottom of the dust chamber. The design of the dust collection bucket is conducive to collecting dust.

[0010] For example, in at least one embodiment of the present invention, the secondary recovery and anti-powder accumulation device for the large cyclone powder room further includes: a plurality of support legs, arranged in pairs and symmetrically arranged along the vertical central axis of the large cyclone separator; and a protective grid plate is provided on the side of the outer shell, the design of which is beneficial to the protection of the fan blades.

[0011] According to another aspect, at least one embodiment of this utility model also provides a two-stage anti-dust collection device for a large cyclone dust chamber, comprising: a vibration anti-wall-hanging component provided on the side of the dust chamber, the vibration anti-wall-hanging component including a connecting belt, the connecting belt being disposed on the output shaft of a motor, the output shaft of the motor being driven and connected to a long rod via the connecting belt, a short plate being fixedly connected to the top of the dust chamber, one end of the long rod being rotatably connected to the side of the short plate, a trigger rod being fixedly connected to the end of the long rod away from the short plate, an L-shaped rod being fixedly connected to the side of the dust chamber, a pressure chamber being fixedly connected to the side of the L-shaped rod, a piston rod passing through one end of the pressure chamber, a piston rod passing through the end of the pressure chamber away from the piston rod, a striking plate being fixedly connected to the end of the piston rod away from the pressure chamber, and a triangular block being fixedly connected to the top of the piston rod. The striking plate is used to strike the dust chamber, which helps to knock down the dust adhering to the inner wall of the dust chamber, reducing wall-hanging.

[0012] For example, in at least one embodiment of the present invention, the large cyclone powder chamber secondary recycling anti-powder accumulation device further includes: the striking plate is located on the side of the powder chamber, the triangular block is located on the displacement trajectory of the trigger rod, the top of the powder chamber is provided with a slot, and the connecting strip passes through the inner wall of the slot. This design is beneficial for striking the powder chamber when the striking plate moves.

[0013] For example, in at least one embodiment of the present invention, the secondary recovery and anti-powder accumulation device for the large cyclone powder room further includes: a spring is fixedly connected to the circumferential surface of the piston rod, and the end of the spring away from the piston rod is fixedly connected to the top of the pressure chamber. The design of the spring facilitates that the piston rod can automatically reset when it is not compressed.

[0014] For example, in at least one embodiment of the present invention, the secondary recovery and anti-powder accumulation device for the large cyclone powder room further includes: a spring two is fixedly connected to the circumferential surface of the piston rod two, and the end of the spring two away from the piston rod two is fixedly connected to the side of the pressure chamber. The design of the spring two is conducive to the piston rod two automatically resetting when it is not squeezed.

[0015] For example, in at least one embodiment of the present invention, the large cyclone powder room secondary recycling anti-powder accumulation device further includes: the powder room is located on the displacement trajectory of the striking plate, a torsion spring is fixedly connected to the circumferential surface of the rotating shaft, and the end of the torsion spring away from the rotating shaft is fixedly connected to the inner wall of the outer shell. The design of the torsion spring is beneficial to the automatic reset of the rotating shaft when it is not driven.

[0016] The beneficial effects of the embodiments of this utility model are as follows: In this invention, the motor, threaded rod, fan blades, and extrusion rod within the back-blowing dust removal assembly work together to achieve dust removal. By placing the back-blowing dust removal assembly at the rounded corner of the powder chamber, the motor drives the threaded rod, threaded sleeve, and extrusion rod to rotate the inclined rod, which in turn drives the fan blades. The rotation of the fan blades generates wind power, blowing away powder and dust from the edges and rounded corners, preventing dust accumulation in these hard-to-clean areas. The wind power generated by the fan blades not only helps to remove dust but also improves air circulation in the powder chamber. Good ventilation not only aids in cleaning but also reduces dust concentration, minimizing environmental pollution and the impact on workers' health.

[0017] In this invention, the interplay between components such as the connecting belt, long rod, and trigger rod inside the oscillating anti-dust wall assembly enables the striking plate to vibrate the outer wall of the powder chamber. This vibration effectively prevents dust from accumulating on the surface and in the gaps of the equipment. Especially in hard-to-clean areas, the vibration helps loosen the accumulated dust, making it easier for the recycling system to process, thus preventing dust accumulation from affecting the recycling effect or causing equipment blockage. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0019] Figure 1 This is a three-dimensional appearance structure diagram of the present utility model; Figure 2 This is a three-dimensional side view of the exhaust fan of this utility model; Figure 3 This is a three-dimensional side sectional view of the powder room structure of this utility model; Figure 4 This is a three-dimensional magnified structural diagram of the fan blade of this utility model; Figure 5 This is a three-dimensional side view of the striking plate of this utility model.

[0020] In the diagram: 1. Support leg; 2. Large cyclone separator; 3. Back-blowing dust removal assembly; 31. Powder chamber; 32. Exhaust fan; 33. Rotary wing filter; 34. Powder collection bin; 35. Powder outlet pipe; 36. Connecting pipe; 37. Motor; 38. Threaded rod; 39. Threaded sleeve; 310. Limiting rod; 311. Extrusion rod; 312. Outer shell; 313. Rotating shaft; 314. Fan blade; 315. Diagonal rod; 316. Torsion spring; 317. Vent; 4. Vibration anti-wall-hanging assembly; 41. Connecting belt; 42. Short plate; 43. Long rod; 44. Actuating rod; 45. L-shaped rod; 46. Pressure chamber; 47. Piston rod one; 48. Piston rod two; 49. Striking plate; 410. Spring one; 411. Spring two; 412. Triangular block; 5. Unblocking pipe; 6. Drag reducer. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0022] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figures 1-5 As shown, this invention illustrates a two-stage anti-powder-accumulation device for a large cyclone dust chamber according to an embodiment of the present invention. The device includes a support leg 1, a large cyclone separator 2 fixedly connected to the side of the support leg 1, a back-blowing dust removal component 3 disposed on the side of the large cyclone separator 2, and a connecting pipe 36. One end of the connecting pipe 36 passes through the side of the large cyclone separator 2, and the end of the connecting pipe 36 away from the large cyclone separator 2 passes through a dust chamber 31. An exhaust fan 32 is disposed on the inner wall of the dust chamber 31, a rotary vane filter 33 is disposed on the inner wall of the dust chamber 31, and a motor 37 is fixedly connected to the inner wall of the dust chamber 31. A threaded rod 38 is fixedly connected to the output shaft. A threaded sleeve 39 is threadedly connected to the circumferential surface of the threaded rod 38. A limit rod 310 is fixedly connected to the side of the motor 37. The end of the limit rod 310 away from the motor 37 passes through the side of the threaded sleeve 39. A pressing rod 311 is fixedly connected to the side of the threaded sleeve 39. A housing 312 is fixedly connected to the inner wall of the powder chamber 31. A rotating shaft 313 is rotatably connected to the inner wall of the housing 312. A fan blade 314 is fixedly connected to the circumferential surface of the rotating shaft 313. A diagonal rod 315 is fixedly connected to the circumferential surface of the rotating shaft 313. A drag reducer 6 is provided on the top of the large cyclone separator 2.

[0028] In some examples, the slant bar 315 is located on the displacement trajectory of the extrusion bar 311, the fan blade 314 is located on the inner wall of the powder chamber 31, the inner wall of the outer casing 312 is provided with a ventilation opening 317, and the appearance of the drag reducer 6 is set as a volute. This design is beneficial to extruding the slant bar 315 when the extrusion bar 311 moves.

[0029] In some examples, there are several vents 317 and several fan blades 314 arranged in a circumferential array on the circumferential surface of the rotating shaft 313. The design of the vents 317 is conducive to the air force generated by the rotation of the fan blades 314 being able to pass through the vents 317.

[0030] In some examples, a dust collection bin 34 is fixedly connected to the side of the support leg 1, a drain pipe 5 runs through the side of the large cyclone separator 2, and a dust outlet pipe 35 runs through the bottom of the dust chamber 31. The design of the dust collection bin 34 is conducive to collecting dust.

[0031] In some examples, there are several support legs 1, arranged in pairs and symmetrical to each other along the vertical central axis of the large cyclone separator 2. The side of the outer casing 312 is provided with a protective grid plate, which is designed to protect the fan blades 314.

[0032] For example, such as Figure 5 As shown, in this application, the edges of the powder chamber 31 are changed from right angles to rounded corners. A back-blowing dust removal component 3 is installed on the inner wall of the rounded corner. When the motor 37 is started, its rotation drives the threaded rod 38 to rotate. The rotation of the threaded rod 38 causes the threaded sleeve 39 to move, which in turn causes the extrusion rod 311 to move. The inclined rod 315 is located on the movement trajectory of the extrusion rod 311. When the extrusion rod 311 moves, it extrudes the inclined rod 315, causing it to rotate. This rotation drives the rotating shaft 313 to rotate, which in turn drives the fan blade 314 to rotate. The fan blade 314 generates airflow. The fan blade 314 is located inside the powder chamber 31, specifically at the position where the edges are changed from right angles to rounded corners. 4. The airflow generated by the rotation will directly blow to the rounded corners, which facilitates the cleaning of powder on the edges and eliminates dust accumulation at right-angle joints. By setting the back-blowing dust removal component 3 at the rounded corners of the powder chamber 31, the linkage of components such as the threaded rod 38, threaded sleeve 39, and extrusion rod 311 driven by the motor 37 can cause the inclined rod 315 to rotate, thereby driving the fan blade 314 to rotate. The rotation of the fan blade 314 generates airflow, which blows away powder and dust from the edges and rounded corners, avoiding the accumulation of dust in these hard-to-clean areas. The airflow generated by the fan blade 314 not only helps to clean dust, but also improves the air circulation in the powder chamber 31. Good ventilation not only helps with cleaning, but also reduces the concentration of dust, reducing environmental pollution and the impact on workers' health.

[0033] like Figures 1-5As shown, this invention illustrates a secondary anti-powder accumulation device for a large cyclone powder chamber according to another embodiment of the present invention. The device includes: a vibrating anti-wall-hanging component 4 disposed on the side of the powder chamber 31; the vibrating anti-wall-hanging component 4 includes a connecting belt 41 disposed on the output shaft of a motor 37; a long rod 43 is drivenly connected to the output shaft of the motor 37 via the connecting belt 41; a short plate 42 is fixedly connected to the top of the powder chamber 31; one end of the long rod 43 is rotatably connected to the side of the short plate 42; and an actuating rod is fixedly connected to the end of the long rod 43 away from the short plate 42. 44. An L-shaped rod 45 is fixedly connected to the side of the powder chamber 31. A pressure chamber 46 is fixedly connected to the side of the L-shaped rod 45. A piston rod 47 passes through one end of the pressure chamber 46. A piston rod 48 passes through the other end of the pressure chamber 46 away from the piston rod 47. A striking plate 49 is fixedly connected to the other end of the piston rod 48 away from the pressure chamber 46. A triangular block 412 is fixedly connected to the top of the piston rod 47. Using the striking plate 49 to strike the powder chamber 31 helps to knock down the dust adhering to the inner wall of the powder chamber 31, reducing the amount of dust adhering to the wall.

[0034] In some examples, the striking plate 49 is located on the side of the powder chamber 31, the triangular block 412 is located on the displacement trajectory of the trigger rod 44, and the top of the powder chamber 31 has a slot, with the connecting strip 41 passing through the inner wall of the slot. This design is beneficial for striking the powder chamber 31 when the striking plate 49 moves.

[0035] In some examples, a spring 410 is fixedly connected to the circumferential surface of piston rod 47. The end of spring 410 away from piston rod 47 is fixedly connected to the top of pressure chamber 46. The design of spring 410 facilitates the automatic reset of piston rod 47 when it is not compressed.

[0036] In some examples, a spring 411 is fixedly connected to the circumferential surface of piston rod 48. The end of spring 411 away from piston rod 48 is fixedly connected to the side of the pressure chamber 46. The design of spring 411 is conducive to the piston rod 48 automatically resetting when it is not compressed.

[0037] In some examples, the powder chamber 31 is located on the displacement trajectory of the striking plate 49, and a torsion spring 316 is fixedly connected to the circumferential surface of the rotating shaft 313. The end of the torsion spring 316 away from the rotating shaft 313 is fixedly connected to the inner wall of the housing 312. The design of the torsion spring 316 is conducive to the automatic reset of the rotating shaft 313 when it is not driven.

[0038] For example, such as Figure 5As shown, the rotation of the motor 37 drives the connecting belt 41 to rotate, which in turn drives the long rod 43 to rotate. The long rod 43 then drives the actuating rod 44 to rotate. The triangular block 412 is positioned on the trajectory of the actuating rod 44. When the actuating rod 44 rotates and presses against the triangular block 412, it forces the block downwards. This downward movement of the triangular block 412 causes the piston rod 47 to move downwards, which in turn moves it into the pressure chamber 46, pushing the gas inside the chamber. The piston rod 48 at the other end is pushed out, which in turn pushes out the striking plate 49. The striking plate 49 is located on the side of the powder chamber 31. The pushed-out striking plate 49 will knock and vibrate the outer wall of the powder chamber 31. This vibration can effectively prevent dust from accumulating on the surface and in the gaps of the equipment, especially in hard-to-clean areas. The vibration can help loosen the accumulated dust, making it easier for the recycling system to process, and preventing dust accumulation from affecting the recycling effect or causing equipment blockage.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for preventing the accumulation of powder in a secondary recovery system of a large cyclone mill, characterized in that, Includes a support leg (1), a large cyclone separator (2) is fixedly connected to the side of the support leg (1), and a back-blowing dust removal component (3) is provided on the side of the large cyclone separator (2). The backflushing dust removal assembly (3) includes a connecting pipe (36), one end of which passes through the side of the large cyclone separator (2), and the other end of which, away from the large cyclone separator (2), passes through a powder chamber (31). An exhaust fan (32) is installed on the inner wall of the powder chamber (31), and a rotary vane filter (33) is installed on the inner wall of the powder chamber (31). A motor (37) is fixedly connected to the inner wall of the powder chamber (31), and a threaded rod (38) is fixedly connected to the output shaft of the motor (37). A threaded sleeve (39) is threaded onto the circumferential surface of the threaded rod (38). A limiting rod (310) is fixedly connected to the side of the machine (37). The end of the limiting rod (310) away from the motor (37) passes through the side of the threaded sleeve (39). A pressing rod (311) is fixedly connected to the side of the threaded sleeve (39). A shell (312) is fixedly connected to the inner wall of the powder chamber (31). A rotating shaft (313) is rotatably connected to the inner wall of the shell (312). A fan blade (314) is fixedly connected to the circumferential surface of the rotating shaft (313). A diagonal rod (315) is fixedly connected to the circumferential surface of the rotating shaft (313). A drag reducer (6) is provided on the top of the large cyclone separator (2).

2. The two-stage anti-accumulation device for a large cyclone powder room according to claim 1, characterized in that, The inclined rod (315) is located on the displacement trajectory of the extrusion rod (311), the fan blade (314) is located on the inner wall of the powder room (31), the inner wall of the outer shell (312) is provided with a ventilation opening (317), and the appearance of the drag reducer (6) is set as a volute.

3. The two-stage anti-dusting device of a large cyclone powder room according to claim 2, characterized in that, The ventilation openings (317) are provided in several ways, and the fan blades (314) are provided in several ways and are arranged in a circumferential array on the circumferential surface of the rotating shaft (313).

4. The two-stage anti-accumulation device of a large cyclone powder room according to claim 3, characterized in that, A powder collection bucket (34) is fixedly connected to the side of the support leg (1), a dredging pipe (5) is passed through the side of the large cyclone separator (2), and a powder outlet pipe (35) is passed through the bottom of the powder room (31).

5. The two-stage anti-dusting device of a large cyclone powder room according to claim 4, characterized in that, The support legs (1) are arranged in several pairs and are symmetrical to each other along the vertical central axis of the large cyclone separator (2). The outer shell (312) is provided with a protective grid plate on its side.

6. The two-stage anti-dusting device of a large cyclone powder room according to claim 5, characterized in that, The powder chamber (31) is provided with a vibrating anti-wall-hanging component (4) on its side. The vibrating anti-wall-hanging component (4) includes a connecting belt (41). The connecting belt (41) is mounted on the output shaft of a motor (37). The output shaft of the motor (37) is connected to a long rod (43) via the connecting belt (41). A short plate (42) is fixedly connected to the top of the powder chamber (31). One end of the long rod (43) is rotatably connected to the side of the short plate (42). The end of the long rod (43) away from the short plate (42) is fixedly connected to a... A trigger rod (44) is fixedly connected to the side of the powder chamber (31), an L-shaped rod (45) is fixedly connected to the side of the L-shaped rod (45), a pressure chamber (46) is fixedly connected to the side of the pressure chamber (46), a piston rod (47) passes through one end of the pressure chamber (46), a piston rod (48) passes through the end of the pressure chamber (46) away from the piston rod (47), a striking plate (49) is fixedly connected to the end of the piston rod (48) away from the pressure chamber (46), and a triangular block (412) is fixedly connected to the top of the piston rod (47).

7. The two-stage anti-dusting device of a large cyclone powder room according to claim 6, characterized in that, The striking plate (49) is located on the side of the powder chamber (31), the triangular block (412) is located on the displacement trajectory of the trigger rod (44), the top of the powder chamber (31) is provided with a slot, and the connecting strip (41) passes through the inner wall of the slot.

8. The two-stage anti-dusting device of a large cyclone powder room according to claim 7, characterized in that, A spring (410) is fixedly connected to the circumferential surface of the piston rod (47), and the end of the spring (410) away from the piston rod (47) is fixedly connected to the top of the pressure chamber (46).

9. The two-stage anti-dusting device of a large cyclone powder room according to claim 8, characterized in that, A spring (411) is fixedly connected to the circumferential surface of the piston rod (48), and the end of the spring (411) away from the piston rod (48) is fixedly connected to the side of the pressure chamber (46).

10. The two-stage anti-dusting device of a large cyclone powder room according to claim 9, characterized in that, The powder chamber (31) is located on the displacement trajectory of the striking plate (49), and a torsion spring (316) is fixedly connected to the circumferential surface of the rotating shaft (313). The end of the torsion spring (316) away from the rotating shaft (313) is fixedly connected to the inner wall of the outer shell (312).

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