Powder packing machine with dust removal function

Abstract

This application relates to the technical field of powder packaging equipment, and more particularly to a powder packaging machine with dust removal function. It includes a frame, a hopper, a feeding pipe, and a dust collection hood. The feeding pipe is vertically arranged on one side of the frame and contains a screw conveyor assembly for controlling the falling speed of the powder. The dust collection hood is fitted over the feeding pipe and has a first suction pipe for absorbing dust backflowed into the dust collection hood after the powder enters the bag. The hopper is coaxially arranged at the top of the feeding pipe, and a hopper cover is connected to the top of the hopper. The hopper cover has a feed inlet with a hopper. A second suction pipe is located on the side of the hopper cover away from the hopper, absorbing dust entering the hopper from the powder. Both the first and second suction pipes are connected to a negative pressure dust collection device via flexible hoses. The dust collection hood has a bag clamping assembly for clamping the bag opening. This application effectively controls the backflow dust in powder packaging equipment.

Description

Technical Field

[0001] This invention relates to the technical field of powder packaging equipment, and in particular to a powder packaging machine with a dust removal function. Background Technology

[0002] In the food processing industry, the automated bagging of powdery materials such as pumpkin powder and flour is generally completed using spiral feeding packaging equipment. The existing Chinese utility model patent with announcement number CN203767088U discloses a dust absorption device for powder bagging. This device slows down the falling of powder and reduces dust generation by setting an inclined powder guide plate in the inlet cylinder. At the same time, a single dust collection point is set at the inlet, and the dust backflowing after the powder is put into the bag is collected through a pipeline connected to a vacuum filter. This can suppress the dust overflow at the bag opening to a certain extent and improve the working environment.

[0003] However, the existing technology only sets up a dust collection and treatment structure at the feed inlet, which can only cover the dust in the bagging process and cannot treat the dust sources in the silo and screw feeder.

[0004] In actual production and use of the above equipment, a large amount of dust is generated due to material collision and airflow disturbance during the process of powder falling in the hopper and being conveyed by the screw feeder. This dust cannot be absorbed by the existing dust collection structure and is easily flushed back into the working environment from the hopper opening with the internal airflow. This not only causes dust pollution in the production site and poses a dust explosion safety hazard, but also leads to the waste of powder raw materials and makes it impossible to achieve effective dust control throughout the entire powder packaging process. Summary of the Invention

[0005] In order to achieve effective control of backflushing dust in powder packaging equipment, this application provides a powder packaging machine with dust removal function.

[0006] The powder packaging machine with dust removal function provided in this application adopts the following technical solution: A powder packaging machine with dust removal function includes a frame, a hopper, a feeding pipe, and a dust collection hood. The feeding pipe is vertically arranged on one side of the frame and has a spiral conveying assembly inside to control the falling speed of the powder. The dust collection hood is fitted over the feeding pipe and has a first suction pipe to absorb dust that is flushed into the dust collection hood after the powder enters the bag. The hopper is coaxially arranged at the top of the feeding pipe and has a hopper cover connected to the top. The hopper cover has a feed inlet and a hopper. A second suction pipe is located on the side of the hopper cover away from the hopper to absorb dust that enters the hopper from the powder. Both the first and second suction pipes are connected to a negative pressure dust collection device via flexible hoses. The dust collection hood has a bag clamping assembly to hold the bag opening.

[0007] Preferably, the hopper cover is connected to a U-shaped rod on its inner surface. The U-shaped rod has a double cone, which is coaxially arranged with the feed inlet. The upper cone of the double cone extends into the hopper and is spaced with the feed inlet to allow powder to pass through. The diameter of the double cone is larger than the diameter of the feed inlet.

[0008] Preferably, a hoist is vertically installed at the top of the frame, and the hoisting end is connected to a mounting shell. The mounting shell is located above the hopper, and a flange pipe is provided between the hopper cover and the mounting shell. One end of the flange pipe is connected to the hopper cover, and the other end is connected to the mounting shell.

[0009] Preferably, the screw conveyor assembly includes a first motor, a connecting shaft, a screw conveyor rod, a fixing ring, and a first bearing. The first motor is connected to the mounting housing. The screw conveyor rod is coaxially disposed inside the feeding pipe, and the blades of the screw conveyor rod are attached to the inner wall of the feeding pipe. The connecting shaft is coaxially connected between the output shaft of the first motor and the rod body of the screw conveyor rod. The fixing ring is connected to the bottom end of the feeding pipe. The fixing ring has through holes equidistantly spaced along the circumference for powder to pass through. The first bearing is coaxially connected to the fixing ring, and the bottom end of the screw conveyor rod is connected inside the first bearing.

[0010] Preferably, the hopper is equipped with a scraping assembly for scraping powder adsorbed on the inner wall of the hopper. The scraping assembly includes a sealed bearing, a rotating tube, a connecting frame, a cleaning brush, a second motor, a first gear, a second gear, and a synchronous belt. The sealed bearing is coaxially connected to the hopper cover and is located inside the flange tube. The rotating tube is coaxially connected to the inner ring of the sealed bearing and is sleeved on the outside of the connecting shaft. The rotating tube and the connecting shaft can rotate relatively independently. The connecting frame is provided on opposite sides of the rotating tube inside the hopper. The cleaning brush is provided on the connecting frame and fits against the inner wall of the hopper. The second gear is connected to the end of the rotating tube that does not penetrate into the hopper. The second motor is connected to the mounting housing. The first gear is connected to the output shaft of the second motor. The synchronous belt is tensioned and wound between the first gear and the second gear.

[0011] Preferably, a second bearing is provided between the rotating tube and the connecting shaft. The second bearing is provided at both ends of the rotating tube. Both the rotating tube and the connecting shaft are provided with slots for the second bearing to be inserted. Both ends of the rotating tube are connected with sealing rings to fix and seal the second bearing.

[0012] Preferably, both connecting frames are connected to stirring blades, the two stirring blades are arranged symmetrically on an axis, and the stirring blades are arranged in a spiral shape to push the powder in the hopper toward the center.

[0013] Preferably, the bag clamping assembly includes a first swing arm, a first connecting rod, a second swing arm, a second connecting rod, a first hoop, a second hoop, and a driving cylinder. A movable frame is provided on one side of the frame, and a U-shaped mounting frame is horizontally provided on the movable frame. The dust collection hood is connected to the mounting frame and is located inside the mounting frame. The bottom of the dust collection hood is integrally formed with a bag expanding tube. The first swing arm and the second swing arm are respectively provided on opposite sides of the mounting frame. The top ends of the first swing arm and the second swing arm are both hinged to the mounting frame. The first hoop is connected between the bottom ends of the two first swing arms, and the second hoop is connected between the bottom ends of the two second swing arms. One end of the driving cylinder is hinged to the first swing arm, and the other end is hinged to the second swing arm. The first connecting rod is connected between the two first swing arms, and the second connecting rod is connected between the two second swing arms. After the first hoop and the second hoop are assembled, they press the packaging bag fitted on the bag expanding tube.

[0014] Preferably, the frame is provided with an adjustment assembly for adjusting the height of the bag clamp. The adjustment assembly includes a transmission pair, a third motor, a third bearing, a threaded rod, a nut seat, a first connecting plate, a linear bearing, a guide rod, and a Toledo sensor. The transmission pair is connected to the frame, the third motor is connected to the input end of the transmission pair, the third bearing is connected to the frame, the threaded rod is vertically connected between the third bearing and the output end of the transmission pair, the nut seat is threaded onto the threaded rod, the first connecting plate is connected to the nut seat, the linear bearing is connected to the first connecting plate, the guide rod is vertically mounted on the frame, the linear bearing is slidably sleeved on the guide rod, one end of the Toledo sensor is connected to the first connecting plate, and the other end is connected to a second connecting plate, which is connected to the movable frame.

[0015] Preferably, a roller conveyor is connected to the frame, and the roller conveyor is located directly below the feeding pipe for outputting bagged packaging bags.

[0016] In summary, this application includes the following beneficial technical effects: 1. The present invention provides a powder packaging machine with dust removal function. Through the dual-point negative pressure dust collection design of the second dust suction pipe of the hopper cover and the first dust suction pipe of the bag-filling end dust collection hood, the dust in the hopper during the feeding and storage stages, as well as the backflushing dust at the bag opening during the bag filling stage, is covered respectively. This achieves dust source control throughout the entire process from feeding, storage, conveying to bag filling, improving the overflow of dust from the hopper inlet and bag opening, reducing dust pollution and dust explosion safety hazards in the workshop, while reducing powder material waste and improving raw material utilization.

[0017] 2. The invention features a double cone coaxially arranged at the feed inlet, which can form a two-stage dust suppression system: the upper cone can disperse and concentrate the falling powder, reduce the impact speed of the material, and reduce the dust generated by the collision of the powder; the lower cone can guide the upward backflow of dust in the hopper in a circumferential manner, preventing dust from directly overflowing from the feed inlet into the workshop. At the same time, it works in conjunction with the second dust suction pipe to efficiently collect the suspended dust after the guidance, suppressing the backflow of dust at the hopper opening from the source, and realizing the treatment of dust at the hopper end.

[0018] 3. The independently driven scraping component in this invention can scrape the powder adsorbed on the inner wall of the hopper in real time to prevent the powder from sticking to the wall and clumping, and breeding microorganisms, thus ensuring the production safety of food-grade powder. In addition, the suspended dust disturbed during the scraping process can be collected by the second dust suction pipe at the same time, improving the comprehensiveness of dust removal. The matching spiral stirring blades can push the powder towards the center of the hopper to avoid hopper blockage, ensure continuous feeding, and reduce airflow disturbance when the powder falls, further reducing the amount of dust generated.

[0019] 4. The spiral conveying assembly provided in this invention has its spiral conveying rod blades attached to the inner wall of the feeding pipe, which can realize quantitative and uniform powder conveying and accurately control the falling speed of the powder to avoid high-speed impact and a large amount of dust generated by the free fall of the powder; the bottom end of the conveying rod is positioned coaxially with the first bearing through a fixing ring to ensure operational stability and avoid uneven feeding caused by shaking, thereby reducing dust generation in the conveying process from the source. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a powder packaging machine with dust removal function in the embodiments of this application; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram illustrating the adjustment component in an embodiment of this application; Figure 4 This is a schematic diagram illustrating the internal structure of the mounting shell and the hopper in the embodiments of this application; Figure 5 This is a schematic diagram illustrating the fixing ring in the embodiments of this application; Figure 6 This is a schematic diagram illustrating the double cone in the embodiments of this application.

[0021] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Elevator; 111. Mounting housing; 12. Roller conveyor frame; 13. Movable frame; 131. Mounting frame; 2. Hopper; 21. Hopper cover; 211. Hopper; 22. Second dust suction pipe; 23. U-shaped rod; 231. Double cone; 24. Flange pipe; 3. Feeding pipe; 4. Dust collection hood; 41. First dust suction pipe; 42. Bag expansion pipe; 5. Screw conveyor assembly; 51. First motor; 52. Connecting shaft; 53. Screw conveyor rod; 54. Fixing ring; 55. First bearing; 6. Bag clamping assembly; 61. First swing arm; 62. First connecting rod; 63. Second swing arm; 64. 65. Second connecting rod; 66. First hoop ring; 67. Second hoop ring; 68. Drive cylinder; 79. Scraper assembly; 70. Sealed bearing; 71. Rotating tube; 72. Second bearing; 72. Sealing ring; 73. Connecting frame; 74. Mixing blade; 75. Cleaning brush; 76. Second motor; 77. First gear; 78. Second gear; 79. Synchronous belt; 80. Adjusting assembly; 81. Transmission pair; 82. Third motor; 83. Third bearing; 84. Threaded rod; 85. Nut seat; 86. First connecting plate; 87. Linear bearing; 88. Guide rod; 89. Toledo sensor; 89. Second connecting plate. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] This application discloses a powder packaging machine with dust removal function. (Refer to...) Figures 1-6 A powder packaging machine with dust removal function includes a frame 1, a hopper 2, a feeding pipe 3, and a dust collection hood 4. The feeding pipe 3 is vertically arranged on one side of the frame 1. A screw conveyor assembly 5 for controlling the falling speed of the powder is installed inside the feeding pipe 3. The dust collection hood 4 is fitted over the feeding pipe 3 and is connected to a first suction pipe 41. The first suction pipe 41 is used to absorb the dust that is flushed back into the dust collection hood 4 after the powder enters the bag. The hopper 2 is coaxially fixed to the top of the feeding pipe 3. A hopper cover 21 is detachably connected to the top of the hopper 2. The hopper cover 21 has a feed inlet. A fixed... A feeding hopper 211 is provided. A second dust suction pipe 22 is connected to the side of the hopper cover 21 away from the feeding hopper 211. The second dust suction pipe 22 is used to absorb the dust generated when the powder enters the hopper 2. The first dust suction pipe 41 and the second dust suction pipe 22 are both connected to a negative pressure dust collection device through a hose. The negative pressure dust collection device is existing technology, so it will not be described in detail here. The dust collection hood 4 is provided with a bag clamping assembly 6 for clamping the bag mouth of the packaging bag. A roller conveyor frame 12 is fixed at the bottom of the frame 1. The roller conveyor frame 12 is located directly below the feeding pipe 3 and is used to output the bagged packaging bags.

[0025] A U-shaped rod 23 is fixed on the surface of the hopper cover 21 inside the hopper 2. A double cone 231 is fixed on the U-shaped rod 23. The double cone 231 is coaxially arranged with the feed inlet. The upper cone of the double cone 231 extends upward into the feed hopper 211, and there is an annular gap between it and the feed inlet for the powder to pass through. The maximum diameter of the double cone 231 is larger than the diameter of the feed inlet, so as to disperse the feed and guide the backflushing dust.

[0026] A hoist 11 is vertically fixed to the top of the frame 1. The hoist 11 in this application is a screw hoist 11 with a self-locking structure. A mounting shell 111 is fixed to the lifting end of the hoist 11. The mounting shell 111 is located directly above the hopper 2. A flange pipe 24 is provided between the hopper cover 21 and the mounting shell 111. One end of the flange pipe 24 is fixedly connected to the top surface of the hopper cover 21, and the other end is fixedly connected to the bottom surface of the mounting shell 111. The hoist 11 can drive the overall height of the structure connected to the mounting shell 111 to adapt to packaging bags of different specifications.

[0027] The screw conveyor assembly 5 includes a first motor 51, a connecting shaft 52, a screw conveyor rod 53, a fixing ring 54, and a first bearing 55. The first motor 51 is fixed to the top surface of the mounting housing 111. The screw conveyor rod 53 is coaxially arranged inside the feeding pipe 3, and the spiral blades of the screw conveyor rod 53 are attached to the inner wall of the feeding pipe 3. The connecting shaft 52 is coaxially fixed between the output shaft of the first motor 51 and the top end of the screw conveyor rod 53. The fixing ring 54 is coaxially fixed at the bottom end of the feeding pipe 3. Multiple through holes for powder to pass through are equidistantly opened along the circumference of the fixing ring 54. The first bearing 55 is coaxially fixed at the center of the fixing ring 54. The bottom end of the screw conveyor rod 53 is coaxially fixed in the inner ring of the first bearing 55, so as to realize the stable rotation of the screw conveyor rod 53 and the steady flow of material.

[0028] The hopper 2 is equipped with a scraping assembly 7 for scraping away powder adsorbed on the inner wall of the hopper 2. The scraping assembly 7 includes a sealed bearing 71, a rotating tube 72, a connecting frame 73, a cleaning brush 74, a second motor 75, a first gear 76, a second gear 77, and a synchronous belt 78. The sealed bearing 71 is coaxially fixed at the center of the hopper cover 21 and is located inside the flange tube 24. The rotating tube 72 is coaxially fixed in the inner ring of the sealed bearing 71 and is coaxially sleeved on the outside of the connecting shaft 52. The connecting frame 73 is located at the position of the rotating tube 72. One rod is fixed on each side of the material bin 2. A cleaning brush 74 is fixed to the end of the connecting frame 73 away from the rotating tube 72, and the bristles of the cleaning brush 74 are in contact with the inner wall of the material bin 2. The second gear 77 is coaxially fixed to the top end of the rotating tube 72 before it penetrates into the material bin 2. The second motor 75 is fixed to the mounting housing 111. The first gear 76 is coaxially fixed to the output shaft of the second motor 75. The synchronous belt 78 is tensioned and wound between the first gear 76 and the second gear 77 to realize the independent drive of the rotating tube 72 and complete the inner wall scraping operation.

[0029] A second bearing 721 is provided between the rotating tube 72 and the connecting shaft 52. There is one second bearing 721 at the top end and one at the bottom end of the rotating tube 72. The inner wall of the rotating tube 72 and the outer wall of the connecting shaft 52 are provided with slots for the second bearing 721 to be inserted. Both ends of the rotating tube 72 are fixed with sealing rings 722 to fix and seal the second bearing 721, ensuring the smooth relative rotation of the rotating tube 72 and the connecting shaft 52, while preventing dust from entering the bearing.

[0030] Both connecting frames 73 are fixed with stirring blades 731. The two stirring blades 731 are arranged symmetrically about the axis of the rotating tube 72. The stirring blades 731 are arranged in a spiral shape to push the powder in the hopper 2 towards the center and prevent the hopper 2 from bridging and blocking the material.

[0031] The bag clamping assembly 6 includes a first swing arm 61, a first connecting rod 62, a second swing arm 63, a second connecting rod 64, a first hoop 65, a second hoop 66, and a drive cylinder 67. A movable frame 13 is provided on one side of the frame 1. A U-shaped mounting frame 131 is horizontally fixed on the movable frame 13. The dust collection hood 4 is fixedly connected to the mounting frame 131 and is located inside the mounting frame 131. An expanding tube 42 is integrally formed at the bottom of the dust collection hood 4. A set of the first swing arm 61 and a set of the second swing arm 63 are each provided on opposite sides of the mounting frame 131. The top ends of the first swing arm 61 and the second swing arm 63 are... Hinged to the mounting frame 131, the first hoop 65 is fixed between the bottom ends of the two sets of first swing arms 61, and the second hoop 66 is fixed between the bottom ends of the two sets of second swing arms 63. The cylinder body end of the drive cylinder 67 is hinged to one of the first swing arms 61, and the piston rod end is hinged to the second swing arm 63 on the same side. The first connecting rod 62 is fixed between the two sets of first swing arms 61, and the second connecting rod 64 is fixed between the two sets of second swing arms 63 to ensure that the swing arms on both sides move synchronously. After the first hoop 65 and the second hoop 66 are spliced ​​together, the bag opening of the packaging bag can be pressed and fitted onto the bag expansion tube 42 to achieve a sealed clamping of the bag opening.

[0032] The frame 1 is equipped with an adjustment assembly 8 for adjusting the height of the bag clamp. The adjustment assembly 8 includes a transmission pair 81, a third motor 82, a third bearing 83, a threaded rod 84, a nut seat 85, a first connecting plate 86, a linear bearing 87, a guide rod 88, and a Toledo sensor 89. The transmission pair 81 is fixed to the top of the frame 1. In this application, the transmission pair 81 is a gear pair used to convert horizontal transmission into vertical transmission. The output shaft of the third motor 82 is fixedly connected to the input end of the transmission pair 81. The third bearing 83 is fixed to the top of the frame 1. The threaded rod 84 is coaxially fixed in the vertical direction to the inner ring of the third bearing 83 and the output shaft of the transmission pair 81. Between the two ends, the nut seat 85 is threaded onto the threaded rod 84, the first connecting plate 86 is fixedly connected to the nut seat 85, the linear bearing 87 is fixed on the first connecting plate 86, and one is provided on each side of the first connecting plate 86. The guide rod 88 is vertically fixed on the frame 1, and two are provided corresponding to the linear bearing 87. The linear bearing 87 is slidably sleeved on the guide rod 88 to realize lifting and guiding. One end of the Toledo sensor 89 is fixed on the first connecting plate 86, and the other end is fixed to the second connecting plate 891. The second connecting plate 891 is fixedly connected to the movable frame 13, which can realize the adjustment of the bag clamping height and the real-time monitoring of the bag weight.

[0033] The implementation principle of a powder packaging machine with dust removal function in this application embodiment is as follows: Before operation, according to the specifications of the packaging bag to be used, the height of the mounting shell 111 is adjusted by the lifting machine 11, thereby driving the mounting shell 111 and the mechanism on the mounting shell 111 to rise and fall as a whole, adjusting the discharge height of the feeding pipe 3, and at the same time starting the third motor 82. The third motor 82 drives the threaded rod 84 to rotate through the transmission pair 81, causing the nut seat 85 to rise and fall along the threaded rod 84, driving the first connecting plate 86, the second connecting plate 891, the movable frame 13 and the bag clamping assembly 6 to rise and fall along the guide rod 88, adjusting the working height of the bag clamping assembly 6 to make the equipment match the size of the packaging bag. Then, the bag opening of the packaging bag is put on the bag expanding tube 42, and the drive cylinder 67 is started. The drive cylinder 67 drives the first swing arm 61 and the second swing arm 63 to swing relative to each other, so that the first hoop 65 and the second hoop 66 are joined together, pressing and fixing the bag opening of the packaging bag on the bag expanding tube 42, completing the preparation before bag filling.

[0034] During the bagging process, the powder enters the hopper 2 through the feed hopper 211 and the feed inlet. As the powder falls, it comes into contact with the upper cone of the double cone 231, is dispersed, and falls in all directions, reducing the impact of the fall and reducing dust generation. The dust that rushes upward in the hopper 2 comes into contact with the lower cone of the double cone 231 and is guided to the periphery of the inner cavity of the hopper 2, preventing it from overflowing from the feed inlet. At the same time, the external dust collection equipment collects the suspended dust in the hopper 2 under negative pressure through the second dust collection pipe 22. The second motor 75 is started simultaneously. The second motor 75 drives the rotating tube 72 to rotate through the first gear 76, the synchronous belt 78, and the second gear 77, which drives the cleaning brush 74 to scrape the powder sticking to the inner wall of the hopper 2. The stirring blade 731 pushes the powder towards the center to ensure smooth feeding. The dust disturbed during the scraping process is collected by the second dust collection pipe 22.

[0035] After the powder in the hopper 2 enters the feeding pipe 3, the first motor 51 drives the screw conveyor 53 to rotate at a constant speed through the connecting shaft 52, conveying the powder downward at a constant speed and in a quantitative manner. The falling speed of the powder is controlled to reduce dust during the conveying process. The powder finally falls into the packaging bag through the hole of the fixing ring 54. During the bagging process, the dust backflowing from the bag enters the dust collection hood 4. The external dust collection equipment collects the dust in the dust collection hood 4 under negative pressure through the first dust collection pipe 41 to prevent dust from overflowing from the bag opening. The Toledo sensor 89 monitors the bag weight in real time. After reaching the preset threshold, the screw conveyor assembly 5 is controlled to stop feeding.

[0036] After the bag is filled, the bag opening is tied tightly by hand. Then, the cylinder 67 is driven to move in the opposite direction, causing the first hoop 65 and the second hoop 66 to separate, releasing the packaging bag. The packaging bag falls onto the roller conveyor frame 12 and is output to the next process, completing a single packaging operation.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A powder packaging machine with dust removal function, characterized in that: The device includes a frame (1), a hopper (2), a feeding pipe (3), and a dust collection hood (4). The feeding pipe (3) is vertically arranged on one side of the frame (1). A screw conveyor assembly (5) for controlling the falling speed of the powder is provided inside the feeding pipe (3). The dust collection hood (4) is fitted over the outside of the feeding pipe (3). A first suction pipe (41) is provided on the dust collection hood (4) to absorb the dust that is flushed back into the dust collection hood (4) after the powder enters the bag. The hopper (2) is coaxially arranged on the top of the feeding pipe (3). The top of the hopper (2) is connected to a hopper cover (21), and the hopper cover (21) is provided with a feed inlet. The feed inlet is provided with a hopper (211). A second dust suction pipe (22) is provided on the side of the hopper cover (21) away from the hopper (211). The second dust suction pipe (22) is used to absorb the dust entering the hopper (2). The first dust suction pipe (41) and the second dust suction pipe (22) are both connected to a negative pressure dust collection device through a hose. The dust collection hood (4) is provided with a bag clamping assembly (6) for clamping the bag opening of the packaging bag.

2. The powder packaging machine with dust removal function according to claim 1, characterized in that: The hopper cover (21) is connected to a U-shaped rod (23) on the surface inside the hopper (2). The U-shaped rod (23) is provided with a double cone (231). The double cone (231) is coaxially arranged with the feed inlet. The upper cone of the double cone (231) extends into the hopper (211) and leaves a gap between it and the feed inlet for powder to pass through. The diameter of the double cone (231) is larger than the diameter of the feed inlet.

3. A powder packaging machine with dust removal function according to claim 2, characterized in that: The top of the frame (1) is vertically equipped with a hoist (11), and the hoisting end of the hoist (11) is connected to a mounting shell (111). The mounting shell (111) is located above the hopper (2). A flange pipe (24) is provided between the hopper cover (21) and the mounting shell (111). One end of the flange pipe (24) is connected to the hopper cover (21), and the other end is connected to the mounting shell (111).

4. A powder packaging machine with dust removal function according to claim 3, characterized in that: The spiral conveying assembly (5) includes a first motor (51), a connecting shaft (52), a spiral conveying rod (53), a fixing ring (54), and a first bearing (55). The first motor (51) is connected to the mounting housing (111). The spiral conveying rod (53) is coaxially arranged inside the feeding pipe (3). The blades of the spiral conveying rod (53) are attached to the inner wall of the feeding pipe (3). The connecting shaft (52) is coaxially connected between the output shaft of the first motor (51) and the rod body of the spiral conveying rod (53). The fixing ring (54) is connected to the bottom end of the feeding pipe (3). The fixing ring (54) has through holes equidistantly arranged along the circumference for powder to pass through. The first bearing (55) is coaxially connected to the fixing ring (54). The bottom end of the rod body of the spiral conveying rod (53) is connected inside the first bearing (55).

5. A powder packaging machine with dust removal function according to claim 4, characterized in that: The hopper (2) is equipped with a scraping assembly (7) for scraping powder adsorbed on the inner wall of the hopper (2). The scraping assembly (7) includes a sealed bearing (71), a rotating tube (72), a connecting frame (73), a cleaning brush (74), a second motor (75), a first gear (76), a second gear (77), and a synchronous belt (78). The sealed bearing (71) is coaxially connected to the hopper cover (21) and is located inside the flange tube (24). The rotating tube (72) is coaxially connected to the inner ring of the sealed bearing (71) and is sleeved outside the connecting shaft (52). 72) can rotate relatively independently with the connecting shaft (52). The connecting frame (73) is provided on both sides of the rotating tube (72) located inside the hopper (2). The cleaning brush (74) is provided on the connecting frame (73) and fits against the inner wall of the hopper (2). The second gear (77) is connected to the end of the rotating tube (72) that does not penetrate into the hopper (2). The second motor (75) is connected to the mounting shell (111). The first gear (76) is connected to the output shaft of the second motor (75). The synchronous belt (78) is tensioned and wound between the first gear (76) and the second gear (77).

6. A powder packaging machine with dust removal function according to claim 5, characterized in that: A second bearing (721) is provided between the rotating tube (72) and the connecting shaft (52). The second bearing (721) is provided at both ends of the rotating tube (72). Both the rotating tube (72) and the connecting shaft (52) are provided with slots for the second bearing (721) to be inserted. Both ends of the rotating tube (72) are connected with sealing rings (722) to fix and seal the second bearing (721).

7. A powder packaging machine with dust removal function according to claim 6, characterized in that: Both of the connecting frames (73) are connected to stirring blades (731), which are arranged symmetrically on the axis and are spirally arranged to push the powder in the hopper (2) toward the center.

8. A powder packaging machine with dust removal function according to claim 7, characterized in that: The bag clamping assembly (6) includes a first swing arm (61), a first connecting rod (62), a second swing arm (63), a second connecting rod (64), a first hoop (65), a second hoop (66), and a drive cylinder (67). A movable frame (13) is provided on one side of the frame (1). A U-shaped mounting frame (131) is horizontally provided on the movable frame (13). The dust collection hood (4) is connected to the mounting frame (131) and is located inside the mounting frame (131). The bottom of the dust collection hood (4) is integrally formed with a bag expansion tube (42). The first swing arm (61) and the second swing arm (63) are respectively provided on opposite sides of the mounting frame (131). The top ends of the swing arm (61) and the top ends of the second swing arm (63) are both hinged to the mounting frame (131). The first hoop (65) is connected between the bottom ends of the two first swing arms (61), and the second hoop (66) is connected between the bottom ends of the two second swing arms (63). One end of the driving cylinder (67) is hinged to the first swing arm (61), and the other end is hinged to the second swing arm (63). The first connecting rod (62) is connected between the two first swing arms (61), and the second connecting rod (64) is connected between the two second swing arms (63). After the first hoop (65) and the second hoop (66) are joined together, they press the packaging bag fitted on the expanding tube (42).

9. A powder packaging machine with dust removal function according to claim 8, characterized in that: The frame (1) is provided with an adjustment assembly (8) for adjusting the height of the bag clamp. The adjustment assembly (8) includes a transmission pair (81), a third motor (82), a third bearing (83), a threaded rod (84), a nut seat (85), a first connecting plate (86), a linear bearing (87), a guide rod (88), and a Toledo sensor (89). The transmission pair (81) is connected to the frame (1). The third motor (82) is connected to the input end of the transmission pair (81). The third bearing (83) is connected to the frame (1). The threaded rod (84) is connected to the third bearing in the vertical direction. Between the output ends of (83) and transmission pair (81), the nut seat (85) is threaded onto the threaded rod (84), the first connecting plate (86) is connected to the nut seat (85), the linear bearing (87) is connected to the first connecting plate (86), the guide rod (88) is vertically mounted on the frame (1), the linear bearing (87) is slidably mounted on the guide rod (88), one end of the Toledo sensor (89) is connected to the first connecting plate (86), and the other end is connected to the second connecting plate (891), the second connecting plate (891) is connected to the movable frame (13).

10. A powder packaging machine with dust removal function according to claim 9, characterized in that: A roller conveyor (12) is connected to the frame (1), and the roller conveyor (12) is located directly below the feeding pipe (3) to output the bagged packaging bags.

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