Dust collection structure for bagging device

Abstract

The utility model discloses a dust collection structure for a bagging device, and belongs to the technical field of veterinary drug preparation. Comprising a dust collector, a first dust collection cover, a second dust collection cover, a third dust collection cover and a fourth dust collection cover, the first dust collection cover and the third dust collection cover are arranged at discharging ports of the primary discharging structure and the secondary discharging structure respectively, the second dust collection cover is located between the two pneumatic clamping jaws, and the fourth dust collection cover is located at the bag opening cleaning structure. The sweeping motor is fixed in the middle of the fourth dust suction hood; the fourth dust suction hood can move up and down on the rack; during cleaning, the fourth dust suction hood moves downwards, and the cleaning brush extends downwards into a bag opening of the packaging bag; and the first dust collection cover, the second dust collection cover, the third dust collection cover and the fourth dust collection cover are all connected with a dust collector through pipelines. A first dust suction hood, a second dust suction hood, a third dust suction hood and a fourth dust suction hood are adopted for collecting dust at the primary discharging structure, the weighing structure, the secondary discharging structure and the bag opening sweeping structure correspondingly, and dust-free packaging is achieved in a corresponding arrangement mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of veterinary drug preparation, in particular to a dust suction structure for a bagging device. Background Art

[0002] Veterinary drug powders are powdered preparations made by uniformly mixing a drug (Traditional Chinese or Western medicine) with a suitable matrix. The drug in veterinary drug powders must first be dried and pulverized. The matrix used in veterinary drug powders includes carriers, diluents, and other components. The matrix should be stable and fluid, easily mixing with the drug to achieve a specific drug concentration. The preparation process for veterinary drug powders typically includes pulverization, drying, mixing, and bagging. A horizontal bagging machine is typically used for bagging.

[0003] For example, the patent application number CN202111167583.3 discloses a dual-head feeding weighing, including legs, a powder packaging machine frame, a primary filling machine head, a primary filling pipe, a primary filling valve, a secondary filling machine head, a secondary filling pipe, a secondary filling valve, a weighing unit, a control panel, a display screen, a bag conveying unit and a total powder barrel. The outer side of the bottom end of the powder packaging machine frame is connected to the top of several groups of legs, the output end of the primary filling machine head is connected to the top of the primary filling pipe, and the input end of the primary filling machine head is connected to the primary filling pipe. The output end of the filling valve is connected, the primary filling pipe is installed at the left station at the top of the powder packaging machine frame, the output end of the secondary filling machine head is connected to the top of the secondary filling pipe, the input end of the secondary filling machine head is connected to the output end of the secondary filling valve, the secondary filling pipe is installed at the right station at the top of the powder packaging machine frame, the total powder barrel is installed at the input end of the primary filling valve and the secondary filling valve, the front left end of the powder packaging machine frame is connected to the inner end of the control panel and the display screen respectively, and a bag conveying unit is installed at the upper end inside the powder packaging machine frame.

[0004] That is, the existing bagging device includes a frame and a clamping structure, a bag loading structure, a bag opening structure, a primary unloading structure, a weighing structure, a secondary unloading structure, a bag mouth cleaning structure, a sealing structure and a discharge structure, etc. The weighing structure includes two pneumatic clamps arranged side by side in the front and back, and the bag mouth cleaning structure includes a cleaning motor and a cleaning brush, etc.

[0005] The new standard requires veterinary drug production to be conducted in a dust-free environment. The applicant found that the primary unloading structure, weighing structure, secondary unloading structure, and bag cleaning structure all generated trace amounts of dust, which could not meet the requirements of dust-free production. Utility Model Content

[0006] To address the above-mentioned issues, the present invention provides a dust collection structure for a bagging device, which utilizes a first dust collection hood, a second dust collection hood, a third dust collection hood, and a fourth dust collection hood to collect dust from the primary unloading structure, the weighing structure, the secondary unloading structure, and the bag opening cleaning structure, respectively, and adopts corresponding configurations to achieve dust-free packaging. The technical solution is as follows:

[0007] The embodiment of the utility model provides a dust collection structure for a bagging device, the bagging device includes a frame and a clamping structure 5 thereon, a bagging structure, a bag opening structure, a primary unloading structure 1, a weighing structure 2, a secondary unloading structure 3, a bag opening cleaning structure 4, a sealing structure and a discharging structure, the weighing structure 2 includes two pneumatic clamps 54 arranged side by side in front and back, the bag opening cleaning structure 4 includes a cleaning motor 41 and a cleaning brush 42; the dust collection structure includes a dust collector, a first dust collection hood 11, a second dust collection hood 12, a third dust collection hood 13 and a fourth dust collection hood 14, the first dust collection hood 11 and the third dust collection hood 13 are respectively arranged on the primary unloading structure 1 and the secondary unloading structure At the discharge port at the lower end of the material structure 3, the second dust hood 12 is located between the two pneumatic clamps 54, the fourth dust hood 14 is located at the bag mouth cleaning structure 4, the cleaning motor 41 is fixed to the middle of the fourth dust hood 14, and the cleaning brush 42 is located directly below the fourth dust hood 14; the fourth dust hood 14 can move up and down on the frame; when cleaning, the fourth dust hood 14 moves downward, and the cleaning brush 42 extends downward into the bag mouth of the packaging bag 6; the first dust hood 11, the second dust hood 12, the third dust hood 13 and the fourth dust hood 14 are all located directly above the packaging bag 6 of the corresponding workstation and are connected to the vacuum cleaner through pipes.

[0008] Among them, the clamping structure 5 in the embodiment of the present invention is arranged along the front-to-back direction and can transport the packaging bag 6 backward by one workstation, and the bag loading structure, bag opening structure, primary unloading structure 1, weighing structure 2, secondary unloading structure 3, bag mouth cleaning structure 4, sealing structure and discharge structure are arranged in sequence from front to back and are respectively located at different workstations; the two pneumatic clamps 54 are respectively used to clamp the front and rear ends of the packaging bag 6 at the corresponding workstation, and the primary unloading structure 1, weighing structure 2, secondary unloading structure 3 and bag mouth cleaning structure 4 are respectively located directly above the packaging bag 6 at the corresponding workstation; the cleaning motor 41 is arranged vertically, and the cleaning brush 42 is arranged at the lower end of the drive shaft of the cleaning motor 41.

[0009] Specifically, the first dust hood 11 and the third dust hood 13 in the embodiment of the present invention are both conical hoods that are small at the top and large at the bottom, and are coaxially arranged with the spiral discharge pipes at the lower parts of the primary unloading structure 1 and the secondary unloading structure 3, respectively. The second dust hood 12 is a rectangular hood arranged in the left-right direction, and the fourth dust hood 14 is a rectangular hood arranged in the front-back direction.

[0010] Furthermore, in the embodiment of the utility model, a first dust exhaust port 21 is respectively provided on the upper front and upper rear of the first dust hood 11; the two first dust exhaust ports 21 are respectively located in front of and behind the primary unloading structure 1, and are both perpendicular to the corresponding upper sides of the first dust hood 11, and are both connected to the vacuum cleaner through pipes; a third dust exhaust port 23 is respectively provided on the upper front and upper rear of the third dust hood 13; the two third dust exhaust ports 23 are respectively located in front of and behind the secondary unloading structure 3, and are both perpendicular to the corresponding upper sides of the third dust hood 13, and are both connected to the vacuum cleaner through pipes; two fourth dust exhaust ports 24 are provided side by side on the upper side of the fourth dust hood 14; the two fourth dust exhaust ports 24 are respectively located in front of and behind the cleaning motor 41, are both arranged vertically, and are both connected to the vacuum cleaner through hoses.

[0011] Furthermore, the weighing structure 2 in the embodiment of the present invention also includes a fixed bracket 51, a weighing bracket 52 and a weighing sensor 53 between the fixed bracket 51 and the weighing bracket 52. The fixed bracket 51 is fixed on the frame and an upper fixed arm and a lower fixed arm are arranged side by side on it. The upper fixed arm and the lower fixed arm are both arranged in the left and right directions. A hard tube 22 is provided on the upper side of the second dust hood 12 in the vertical direction; a through hole is provided on the upper fixed arm in the vertical direction for the hard tube 22 to pass through, and a locking bolt is provided on it and at the through hole; the hard tube 22 is located in the through hole and is locked by the locking bolt, the upper end of which is connected to the vacuum cleaner through a pipeline, and the lower end of which is fixedly connected to the upper side of the second dust hood 12; two pneumatic clamps 54 are respectively fixed on the front and rear ends of the weighing bracket 52, and a weighing sensor 53 is provided between the middle part of the weighing bracket 52 and the lower fixed arm.

[0012] Among them, the frame in the embodiment of the present invention is a plate-like structure arranged in the front-to-back direction, and the clamping structure 5, bagging structure, bag opening structure, primary unloading structure 1, weighing structure 2, secondary unloading structure 3, bag mouth cleaning structure 4, sealing structure and discharging structure are all located on one side of the frame, and a hard main pipe is provided on the other side of the frame. The vacuum cleaner is located at the rear of the frame and is connected to the rear end of the hard main pipe through a soft main pipe; the hard main pipe is arranged in the front-to-back direction, and its front end is closed, and two first air inlets 31, a second air inlet 32, Two third air inlets 33 and two fourth air inlets 34; the first air inlet 31, the second air inlet 32, the third air inlet 33 and the fourth air inlet 34 are respectively located at the primary unloading structure 1, the weighing structure 2, the secondary unloading structure 3 and the bag cleaning structure 4, which are respectively located above the first dust hood 11, the second dust hood 12, the third dust hood 13 and the fourth dust hood 14, and are all arranged in the left and right directions. They pass through the frame and are connected to the first dust exhaust port 21, the upper end of the hard tube 22, the third dust exhaust port 23 and the fourth dust exhaust port 24 through a hose.

[0013] Furthermore, a motor mounting slot is protruding upwardly from the middle portion of the upper side of the fourth dust hood 14 in the embodiment of the present invention, and a fixing plate 7 is provided in the middle portion of the side close to the frame; the cleaning motor 41 is fixed in the motor mounting slot, the fixing plate 7 is arranged in the left and right directions, and a three-axis cylinder 8 is provided in the vertical direction on the frame; the three telescopic rods of the three-axis cylinder 8 are arranged side by side on the left and right and the lower ends of the telescopic rods are fixedly connected to the upper side of the fixing plate 7.

[0014] The beneficial effects of the technical solution provided by the embodiment of the present invention are as follows: The embodiment of the present invention provides a dust collection structure for a bagging device, which uses a first dust collection hood, a second dust collection hood, a third dust collection hood, and a fourth dust collection hood to respectively collect dust from the primary unloading structure, the weighing structure, the secondary unloading structure, and the bag opening cleaning structure, and adopts corresponding settings to achieve dust-free packaging. Specifically, the first dust collection hood and the third dust collection hood are conical hoods and are directly fixed at the discharge ports of the primary unloading structure and the secondary unloading structure. The second dust collection hood (which can be smaller and is set in the left and right directions) is set between two pneumatic clamps; the fourth dust collection hood is set in the front-to-back direction and needs to be longer (the dust at the bag opening cleaning structure is the most). It is fixed together with the cleaning motor and moves up and down together. According to the amount of dust produced, the corresponding number of dust exhaust ports is designed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a partial structural diagram of a dust collection structure for a bagging device provided by an embodiment of the present utility model;

[0016] Figure 2 It is a structural diagram of the weighing structure;

[0017] Figure 3 It is a top view of the weighing structure;

[0018] Figure 4 It is a structural diagram of the bag cleaning structure;

[0019] Figure 5 It is a side view of the bag cleaning structure;

[0020] Figure 6 3 is a dust flow diagram of the dust collection structure used for the bagging device in this embodiment.

[0021] In the figure: 1 primary unloading structure, 2 weighing structure, 3 secondary unloading structure, 4 bag opening cleaning structure, 5 clamping structure, 6 packaging bag, 7 fixing plate, 8 three-axis cylinder;

[0022] 11 first dust collection hood, 12 second dust collection hood, 13 third dust collection hood, 14 fourth dust collection hood;

[0023] 21 first dust exhaust port, 22 hard pipe, 23 third dust exhaust port, 24 fourth dust exhaust port;

[0024] 31 first air inlet, 32 second air inlet, 33 third air inlet, 34 fourth air inlet;

[0025] 41 cleaning motor, 42 cleaning brush;

[0026] 51 fixed bracket, 52 weighing bracket, 53 weighing sensor, 54 pneumatic clamp. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] See also Figure 1-6 , Example 1 provides a dust collection structure for a bagging device, and the bagging device includes a frame and a clamping structure 5 thereon, a bagging structure, a bag opening structure, a primary unloading structure 1, a weighing structure 2, a secondary unloading structure 3, a bag mouth cleaning structure 4, a sealing structure and a discharge structure, etc. The clamping structure 5 is arranged in the front-to-back direction, and it can transport the packaging bag 6 backward by one workstation. For example, reference can be made to the description of application number CN202210046528.7. The bagging structure, the bag opening structure, the primary unloading structure 1, the weighing structure 2, the secondary unloading structure 3, the bag mouth cleaning structure 4, the sealing structure and the discharge structure are arranged in sequence from front to back and are respectively located at different workstations. The primary unloading structure 1, the weighing structure 2, the secondary unloading structure 3 and the bag mouth cleaning structure 4 are respectively located directly above the packaging bag 6 at the corresponding workstations. Specifically, the clamping structure 5 is provided with eight workstations from front to back, and the eight workstations correspond to the bag loading structure, bag opening structure, primary unloading structure 1, weighing structure 2, secondary unloading structure 3, bag mouth cleaning structure 4, sealing structure and discharging structure respectively.

[0030] The weighing structure 2 comprises a fixed bracket 51, a weighing bracket 52, a load cell 53 positioned between the fixed bracket 51 and the weighing bracket 52, and two pneumatic grippers 54 arranged side by side. The fixed bracket 51 is fixed to the machine frame and has an upper and lower fixed arm positioned side by side, both arranged in a horizontal direction. The two pneumatic grippers 54 are fixed to the front and rear ends of the weighing bracket 52, respectively, and are used to clamp the front and rear ends (specifically, the front and rear ends at the top) of the packaging bag 6 at the corresponding workstation. They are driven synchronously. The weighing bracket 52 is suspended in the air, and the load cell 53 is positioned between its center and the lower fixed arm. The two jaws of the pneumatic grippers 54 are located on the left and right sides of the packaging bag 6.

[0031] Among them, the bag mouth cleaning structure 4 includes a cleaning motor 41 and a cleaning brush 42. The cleaning motor 41 is arranged vertically; the cleaning brush 42 is arranged at the lower end of the driving shaft of the cleaning motor 41, which is located directly below the fourth dust hood 14. Specifically, a motor mounting groove is protruding upward in the middle of the upper side of the fourth dust hood 14, and a fixing plate 7 (specifically a rectangular plate) is provided in the middle of the side close to the frame. The cleaning motor 41 is fixed in the motor mounting groove, the fixing plate 7 is arranged in the left and right directions, and a three-axis cylinder 8 is provided in the vertical direction on the frame. The three telescopic rods of the three-axis cylinder 8 are arranged side by side on the left and right, and the lower end of the telescopic rod is fixedly connected to the upper side of the fixing plate 7, which is used to drive the fourth dust hood 14 to move up and down.

[0032] The dust collection structure includes a vacuum cleaner (not shown, representing the existing structure), a first dust collection hood 11, a second dust collection hood 12, a third dust collection hood 13, and a fourth dust collection hood 14. The first dust collection hood 11 and the third dust collection hood 13 are located at the discharge ports at the lower ends of the primary unloading structure 1 and the secondary unloading structure 3, respectively. Specifically, the first dust collection hood 11 is located 2-4 cm above the lower end of the primary unloading structure 1, and the third dust collection hood 13 is located 2-4 cm above the lower end of the secondary unloading structure 3. The second dust collection hood 12 is located between two pneumatic grippers 54, which are fixed to the upper fixed arm. The fourth dust collection hood 14 is located at the bag opening cleaning structure 4 and can move up and down on the frame (driven by the three-axis cylinder 8). During cleaning, the three-axis cylinder 8 extends, and the fourth dust collection hood 14 moves downward to above and adjacent to the packaging bag 6, whereupon the cleaning brush 42 extends downward into the bag opening 6.

[0033] The first dust hood 11, the second dust hood 12, the third dust hood 13 and the fourth dust hood 14 are all located directly above the packaging bag 6 at the corresponding workstations and are connected to the vacuum cleaner through pipes (the pipe on the fourth dust hood 14 is a hose to allow the fourth dust hood 14 to move up and down).

[0034] Specifically, the first dust hood 11 and the third dust hood 13 in the embodiment of the present invention are both conical hoods that are small at the top and large at the bottom, and are coaxially arranged with the spiral discharge pipes at the lower parts of the primary unloading structure 1 and the secondary unloading structure 3, respectively. The second dust hood 12 is a rectangular hood arranged in the left-right direction, and the fourth dust hood 14 is a rectangular hood arranged in the front-to-back direction and is longer (finally, it can shield the packaging bag 6 in the front-to-back direction).

[0035] Example 2

[0036] See also Figure 1 、 24. Example 2 provides a dust collection structure for a bagging device. Its structure is essentially the same as that of Example 1, except that, to ensure effective dust collection, more dust is generated at the primary unloading structure 1, the secondary unloading structure 3, and the bag opening cleaning structure 4, while less dust is generated at the weighing structure 2. In this embodiment, a first dust discharge port 21 is provided at the upper front and upper rear of the first dust hood 11. The two first dust discharge ports 21 are located in front of and behind the primary unloading structure 1, respectively, and are perpendicular to the corresponding upper sides of the first dust hood 11. Both are connected to a dust collector via a pipe. A third dust discharge port 23 is provided at the upper front and upper rear of the third dust hood 13. The two third dust discharge ports 23 are located in front of and behind the secondary unloading structure 3, respectively, and are perpendicular to the corresponding upper sides of the third dust hood 13. Both are connected to a dust collector via a pipe. A second dust discharge port is provided on the second dust hood 12, and the second dust discharge port is connected to a dust collector via a pipe. The upper side of the fourth dust cover 14 is provided with two fourth dust outlets 24 in parallel front and back. The two fourth dust outlets 24 are respectively located in front of and behind the cleaning motor 41, and are both vertically arranged and are connected to the vacuum cleaner through a hose.

[0037] Example 3

[0038] See also Figure 1-2 , Example 3 provides a dust collection structure for a bagging device, and its structure is basically the same as that of Example 2, except that: a hard tube 22 is provided on the upper side of the second dust hood 12 in the vertical direction, which can be adjusted up and down. A through hole (specifically, a circular hole slightly larger than the hard tube 22) is provided on the upper fixed arm in the vertical direction for the hard tube 22 to pass through, and a locking bolt is provided on it and located at the through hole (such as being located on the end surface of the upper fixed arm and arranged in the left and right directions). The hard tube 22 is located in the through hole and is locked by the locking bolt. Its upper end (serving as the second dust exhaust port) is connected to the vacuum cleaner through a pipeline, and its lower end is fixedly connected to the upper side of the second dust hood 12 and communicates with the second dust hood 12. The second dust hood 12 can be adjusted up and down by loosening the locking bolt.

[0039] Example 4

[0040] See also Figure 1 、 2Example 4 provides a dust collection structure for a bagging device. Its structure is substantially the same as that of Example 3, except that the frame in this embodiment is a plate-like structure arranged in a front-to-back direction. The clamping structure 5, bag loading structure, bag opening structure, primary unloading structure 1, weighing structure 2, secondary unloading structure 3, bag opening cleaning structure 4, sealing structure, and discharge structure are all located on one side of the frame (specifically, the left side). A rigid main pipe is provided on the other side of the frame (specifically, the right side). The vacuum cleaner is located at the rear of the frame and is connected to the rear end of the rigid main pipe via a flexible main pipe. The rigid main pipe is arranged in a front-to-back direction, its front end is closed, and is provided with two first air inlets 31, one second air inlet 32, two third air inlets 33, and two fourth air inlets 34. The first air inlet 31, the second air inlet 32, the third air inlet 33, and the fourth air inlet 34 are respectively located at the primary unloading structure 1, the weighing structure 2, the secondary unloading structure 3, and the bag cleaning structure 4. They are respectively located above the first dust hood 11, the second dust hood 12, the third dust hood 13, and the fourth dust hood 14. They are all arranged in a left-right direction and are all located on the left side of the rigid main pipe. They pass through the frame to the left and are connected to the first dust exhaust port 21, the upper end of the rigid pipe 22, the third dust exhaust port 23, and the fourth dust exhaust port 24 through hoses. Specifically, the two first air inlets 31 are respectively located in front and rear of the primary unloading structure 1 and are connected to the first dust exhaust port 21 on the corresponding side through hoses. The second air inlet 32 ​​is located near the upper end of the rigid pipe 22. The two third air inlets 33 are respectively located in front and rear of the secondary unloading structure 3 and are connected to the third dust exhaust port 23 on the corresponding side through hoses. The two fourth air inlets 34 are respectively located in front of and behind the motor mounting slot, and are connected to the fourth dust exhaust ports 24 on the corresponding sides through hoses.

[0041] Among them, "first", "second", "third" and "fourth" in the embodiments of the present invention only serve to distinguish and have no other special meanings.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dust collection structure for a bagging device, the bagging device comprising a frame and a clamping structure (5) thereon, a bagging structure, a bag opening structure, a primary unloading structure (1), a weighing structure (2), a secondary unloading structure (3), a bag opening cleaning structure (4), a sealing structure and a discharging structure, wherein the weighing structure (2) comprises two pneumatic clamps (54) arranged side by side in front and back, and the bag opening cleaning structure (4) comprises a cleaning motor (41) and a cleaning brush (42); characterized in that: The dust collection structure comprises a dust collector, a first dust collection hood (11), a second dust collection hood (12), a third dust collection hood (13) and a fourth dust collection hood (14); the first dust collection hood (11) and the third dust collection hood (13) are respectively arranged at the discharge ports at the lower ends of the primary unloading structure (1) and the secondary unloading structure (3); the second dust collection hood (12) is located between two pneumatic clamps (54); the fourth dust collection hood (14) is located at the bag opening cleaning structure (4); the cleaning motor (41) is fixed to the fourth dust collection hood (14), the cleaning brush (42) is located directly below the fourth dust hood (14); the fourth dust hood (14) can move up and down on the frame; when cleaning, the fourth dust hood (14) moves downward, and the cleaning brush (42) extends downward into the bag opening of the packaging bag (6); the first dust hood (11), the second dust hood (12), the third dust hood (13) and the fourth dust hood (14) are all located directly above the packaging bag (6) of the corresponding workstation and are connected to the vacuum cleaner through pipelines.

2. The dust collecting structure for a bagging device according to claim 1, characterized in that: The clamping structure (5) is arranged in the front-to-back direction and can transport the packaging bag (6) backward to one workstation. The bag loading structure, bag opening structure, primary unloading structure (1), weighing structure (2), secondary unloading structure (3), bag mouth cleaning structure (4), sealing structure and discharge structure are arranged in sequence from front to back and are respectively located at different workstations. Two pneumatic clamps (54) are respectively used to clamp the front and rear ends of the packaging bag (6) at the corresponding workstation. The primary unloading structure (1), weighing structure (2), secondary unloading structure (3) and bag mouth cleaning structure (4) are respectively located directly above the packaging bag (6) at the corresponding workstation. The cleaning motor (41) is arranged vertically, and the cleaning brush (42) is arranged at the lower end of the driving shaft of the cleaning motor (41).

3. The dust collecting structure for a bagging device according to claim 1, characterized in that: The first dust hood (11) and the third dust hood (13) are both conical hoods with a small upper portion and a large lower portion, and are coaxially arranged with the spiral discharge pipes at the lower portions of the primary unloading structure (1) and the secondary unloading structure (3), respectively. The second dust hood (12) is a rectangular hood arranged in the left-right direction, and the fourth dust hood (14) is a rectangular hood arranged in the front-back direction.

4. The dust collecting structure for a bagging device according to claim 1, characterized in that: A first dust exhaust port (21) is provided on the upper front and upper rear of the first dust hood (11); the two first dust exhaust ports (21) are respectively located in front of and behind the primary unloading structure (1), are both perpendicular to the upper corresponding sides of the first dust hood (11), and are both connected to the dust collector through pipes; a third dust exhaust port (23) is respectively provided on the upper front and upper rear of the third dust hood (13); the two third dust exhaust ports (23) are respectively located in front of and behind the secondary unloading structure (3), are both perpendicular to the upper corresponding sides of the third dust hood (13), and are both connected to the dust collector through pipes; two fourth dust exhaust ports (24) are provided side by side on the upper side of the fourth dust hood (14); the two fourth dust exhaust ports (24) are respectively located in front of and behind the cleaning motor (41), are both arranged vertically, and are both connected to the dust collector through hoses.

5. The dust collecting structure for a bagging device according to claim 4, characterized in that: The weighing structure (2) further comprises a fixed bracket (51), a weighing bracket (52) and a weighing sensor (53) between the fixed bracket (51) and the weighing bracket (52); the fixed bracket (51) is fixed on the frame and an upper fixed arm and a lower fixed arm are arranged side by side on the fixed bracket (51), the upper fixed arm and the lower fixed arm are arranged in the left and right directions, a hard tube (22) is provided on the upper side of the second dust hood (12) in the vertical direction; a through hole for the hard tube (22) to pass through is provided on the upper fixed arm in the vertical direction, and a locking bolt is provided on the hard tube and located at the through hole; the hard tube (22) is located in the through hole and is locked by the locking bolt, the upper end of the hard tube is connected to the dust collector through a pipeline, and the lower end of the hard tube is fixedly connected to the upper side of the second dust hood (12); two pneumatic clamps (54) are respectively fixed to the front and rear ends of the weighing bracket (52), and a weighing sensor (53) is provided between the middle part of the weighing bracket (52) and the lower fixed arm.

6. The dust collecting structure for a bagging device according to claim 5, characterized in that: The frame is a plate-like structure arranged in the front-back direction; the clamping structure (5), bag loading structure, bag opening structure, primary unloading structure (1), weighing structure (2), secondary unloading structure (3), bag opening cleaning structure (4), sealing structure and discharge structure are all located on one side of the frame; a hard main pipe is provided on the other side of the frame; the vacuum cleaner is located at the rear of the frame and is connected to the rear end of the hard main pipe through a soft main pipe; the hard main pipe is arranged in the front-back direction, its front end is closed, and two first air inlets (31), one second air inlet (32), two third air inlets (33) and two fourth air inlets (34) are respectively provided on it. Air inlet (34); the first air inlet (31), the second air inlet (32), the third air inlet (33) and the fourth air inlet (34) are respectively located at the primary unloading structure (1), the weighing structure (2), the secondary unloading structure (3) and the bag mouth cleaning structure (4), and are respectively located above the first dust hood (11), the second dust hood (12), the third dust hood (13) and the fourth dust hood (14), and are all arranged in the left and right directions, passing through the frame, and are respectively connected to the first dust exhaust port (21), the upper end of the hard pipe (22), the third dust exhaust port (23) and the fourth dust exhaust port (24) through a hose.

7. The dust collecting structure for a bagging device according to claim 1, characterized in that: A motor mounting slot is protruding upwards in the middle of the upper side of the fourth dust hood (14), and a fixing plate (7) is provided in the middle of one side close to the frame; the cleaning motor (41) is fixed in the motor mounting slot, the fixing plate (7) is arranged in the left and right directions, and a three-axis cylinder (8) is provided on the frame in the vertical direction; the three telescopic rods of the three-axis cylinder (8) are arranged side by side in the left and right directions, and the lower ends of the telescopic rods are fixedly connected to the upper side of the fixing plate (7).

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