Ultra-light and ultra-fine powder quantitative packaging machine

Abstract

An ultra-light and ultra-fine powder quantitative packaging machine, comprising a discharging screw arranged at the bottom of a conical bin, the top end of the discharging screw being connected with a stirring shaft, an annular sleeve being arranged on the stirring shaft and a stirring paddle being welded on the stirring shaft, the discharging screw being arranged in the sleeve connected with the discharge port of the conical bin, the inner wall of the sleeve being in gap cooperation with the discharging screw to facilitate the discharge of air in the material, a clamping sleeve being arranged at the discharge port of the bin, the clamping sleeve being used for fixing the sleeve and a negative pressure dust removal cover, the negative pressure dust removal cover being communicated with a dust collector and being used for collecting dust generated in the material filling process, and a bag clamping and weighing assembly being arranged on the outer periphery of the sleeve and being used for clamping a packaging bag.

Description

Technical Field

[0001] This utility model relates to the field of ultralight and ultrafine powder packaging, and in particular to an ultralight and ultrafine powder quantitative packaging machine. Background Technology

[0002] Existing powder quantitative packaging machines are suitable for packaging conventional ultrafine powders or granules. However, they present numerous problems when packaging ultralight and ultrafine powders with very low specific gravity, such as porous carbon, carbon aerogel, activated carbon, carbon nanotubes, fumed carbon fibers, and graphite conductive agents. Before packaging, these ultralight and ultrafine powders need to be fed into the packaging machine's hopper using a screw conveyor or vacuum feeder. This process inevitably introduces a large amount of air into the material. Later, as the material enters the feeding screw sleeve under the action of the hopper's agitator, and falls into the packaging bag under the push of the screw and its own gravity, a large amount of air is also introduced. This results in the material inside the bag being abnormally loose, with a significantly lower bulk density compared to before packaging. This leads to situations where the packaging bag cannot be filled to the specified weight of material, or it is overfilled and cannot be sealed. If the air in the material is removed later by letting it stand or vacuuming, and then the material is manually added, it results in repetitive labor, extended operating time, and low production efficiency. Simply increasing the size of the packaging bag also requires increasing the size of the outer packaging, thus increasing the corresponding packaging material costs and material transportation costs. Meanwhile, a significant amount of air remains inside the sealed packaging bag, which can rupture and cause material leakage when the lower packaging bag is compressed during transportation. Furthermore, the bag clamping device in existing powder quantitative packaging machines is fixed, and the discharge port of the feeding screw is far from the bottom of the packaging bag. When ultra-light and ultra-fine powders enter the bag under the propulsion of the feeding screw and their own gravity, a large amount of dust is easily generated, increasing the difficulty of collection, resulting in a poor working environment and high material loss. Summary of the Invention

[0003] To address the aforementioned issues, this technical solution provides an ultra-light and ultra-fine powder quantitative packaging machine.

[0004] To achieve the above objectives, the technical solution is as follows:

[0005] An ultra-light and ultra-fine powder quantitative packaging machine includes a feeding screw set at the bottom of a conical hopper. The top of the feeding screw is connected to a stirring shaft. The stirring shaft is provided with an annular sleeve and a stirring paddle is welded on it. The feeding screw is placed inside the sleeve connected to the discharge port of the conical hopper. The inner wall of the sleeve and the feeding screw are in clearance fit to facilitate the discharge of air from the material. The machine also includes a clamping sleeve fitted at the discharge port of the hopper. The clamping sleeve is used to fix the sleeve and a negative pressure dust collector. The negative pressure dust collector is connected to a dust collector and is used to collect dust generated during the material filling process. The machine also includes a bag clamping and weighing component set on the outer periphery of the sleeve for clamping the packaging bag.

[0006] In some embodiments, the sleeve includes a conical cylinder fitted with a sleeve cover, and the end of the sleeve cover is provided with a baffle.

[0007] In some embodiments, the discharge port of the conical cylinder is detachably connected to a material outlet cylinder via a thread.

[0008] In some embodiments, the material outlet cylinder is cylindrical or conical.

[0009] In some embodiments, the bag-clamping weighing assembly includes a telescopic arm, wherein a drive cylinder is provided at the end of one side of the telescopic arm, and an anti-slip block is provided at the end of the other side of the telescopic arm opposite to the drive cylinder.

[0010] The telescopic arm is mounted on a crossbeam, which is connected to a vertical beam and a connecting cylinder.

[0011] In some embodiments, the feeding auger includes a screw, one end of which is connected to blades and the other end is provided with a connecting bolt. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0013] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the feeding spiral structure according to an embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of the sleeve structure according to an embodiment of the present utility model;

[0016] Figure 4 This is a schematic diagram of the bag clamping weighing component structure according to an embodiment of the present invention;

[0017] Figure 5 This is a schematic diagram of the workflow of an embodiment of the present utility model. Detailed Implementation

[0018] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Please refer to Figure 1-5As shown, an ultra-light and ultra-fine powder quantitative packaging machine includes a feeding screw 1 set at the bottom of a conical hopper 5. The top end of the feeding screw 1 is connected to a stirring shaft 2. An annular sleeve 6 is provided on the shaft and a stirring paddle 7 is welded on it. The feeding screw 1 is placed inside a sleeve 3 connected to the discharge port of the conical hopper 5. The inner wall of the sleeve 3 is in clearance fit with the feeding screw 1 to facilitate the discharge of air from the material. It also includes a clamping sleeve 4 fitted at the discharge port of the hopper. The clamping sleeve 4 is used to fix the sleeve 3 and a negative pressure dust collector 9. The negative pressure dust collector 9 is connected to a dust collector and is used to collect dust generated during the material filling process. It also includes a bag clamping and weighing assembly 8 set on the outer periphery of the sleeve 3 for clamping the packaging bag.

[0020] Specifically, the sleeve 3 includes a conical cylinder 301, the conical cylinder 301 is fitted with a sleeve cover 302, and the end of the sleeve cover 302 is provided with a baffle 303.

[0021] The spiral sleeve 3 consists of an inverted conical sleeve 301, a sleeve cover 302, and an annular baffle 303. The dimensions of the inverted conical sleeve 301 are clearance-fitted with the blades 102 of the feeding spiral 1, achieving progressive compression of the material while allowing air in the material to escape upwards. The bottom material outlet 3011 of the inverted conical sleeve 301 adopts a detachable structural design, connected to the sleeve 301 via a thread 3012. The bottom material outlet 3011 can be designed as a straight cylinder or an inverted conical cylinder 3013. Compared with the straight cylinder 3011, using an inverted conical cylinder 3013 can further slow down the feeding speed, more thoroughly expel air from the material, and result in a more compact and smaller material volume after bagging, thus meeting the packaging requirements of ultra-light and ultra-fine powders with different specific gravities. An annular baffle 303 is welded to the bottom of the sleeve cover 302, which serves to shield against dust from the material, and a sealed space is formed between the sleeve cover 302 and the inverted conical sleeve 301, preventing dust from spreading upwards. During spiral feeding, most of the dust is blocked by the annular baffle 303 and the cylindrical cover 302, effectively reducing dust diffusion. Even if a small amount of dust diffuses and overflows from the edge of the annular baffle, it can be collected by the negative pressure dust collector hood 9. The spiral sleeve 3 is inserted into the annular ferrule 4 from the top end and seamlessly connected to the bottom of the conical hopper 5. Tightening the fastening bolts on the annular ferrule 4 can fix the spiral sleeve 3.

[0022] Specifically, the discharge port of the conical cylinder 301 is detachably connected to a material outlet cylinder 3011 via a thread 3012.

[0023] Specifically, the material outlet cylinder 3011 is cylindrical or conical.

[0024] Specifically, the bag clamping and weighing assembly 8 includes a telescopic arm 801, wherein a drive cylinder 802 is provided at the end of one side of the telescopic arm 801, and an anti-slip block 803 is provided at the end of the other side of the telescopic arm 801 opposite to the drive cylinder 802.

[0025] The telescopic arm 801 is mounted on the crossbeam 804, the crossbeam 804 is connected to the vertical beam 805, and the crossbeam 804 is also connected to the connecting cylinder 806.

[0026] The bag-clamping weighing assembly 8 consists of a telescopic arm 801, a cylinder 802, an anti-slip block 803, a crossbeam 804, a vertical beam 805, a connecting cylinder 806, etc. Figure 4 As shown in (a), Figure 4 (b) is a top view. There are two sets of telescopic arms 801, each welded below a crossbeam 804. The two crossbeams 804 are symmetrically welded to the outside of the connecting cylinder 806. A cylinder 802 is welded to the bottom of the outer arm of each telescopic arm 801, and an anti-slip block 803 is welded to the inner arm near the cylinder, preventing the packaging bag from falling off and the material from spilling during the filling process. The vertical beam 805 is equipped with a high-precision weighing module. One end is welded perpendicularly to the two crossbeams 804 to the outside of the connecting cylinder 806, supporting the bag clamping and weighing components. The other end is mounted and fixed to the frame of the packaging machine.

[0027] The negative pressure dust collector 9 is fixed above the bag clamping and weighing assembly 8. It has symmetrical negative pressure air extraction holes on the left and right sides and is connected to the dust collector through a pipe. It collects the small amount of dust that overflows during material filling, thereby keeping the working environment clean.

[0028] When bagging ultra-light and ultra-fine powders, the packaging bag is first placed on the anti-slip block 803 of the inner arm of the telescopic arm 801 of the bag clamping and weighing assembly 8. The cylinder 802 extends the push rod 8021, which works together with the anti-slip block 803 to clamp the packaging bag. The stirring paddle 7 and the feeding screw 1 are started to rotate in opposite directions. The material enters the inverted conical sleeve 201 from the bottom of the conical hopper 5. Under the rotation of the feeding screw 1, the material is continuously compressed and the air is discharged. The material is then discharged from the outlet 2011 or 2013 into the packaging bag. At the same time, the weighing module measures the material entering the bag. As the material is filled, the telescopic arm 801 gradually extends, always maintaining a certain distance between the height of the material in the bag and the annular baffle 303 of the screw sleeve 3. This avoids the impact of the material falling into the bag and generating a large amount of dust, while also ensuring the accuracy of the material weighing. Because the bag-clamping weighing assembly 8 is linked with the feeding screw 1 and the agitator 7, when the weight of the material inside the bag reaches a certain value, the rotation speed of the feeding screw 1 and the agitator 7 gradually decreases until the set weight is reached. Then, the feeding screw 1 and the agitator 7 stop rotating, and the bag filled with material is removed from the bag-clamping weighing assembly 8, completing the filling operation. A small amount of dust generated during the material filling process can be collected by the negative pressure dust collector hood 9 above the bag-clamping weighing assembly 8, thus maintaining a clean working environment. The above operation process is as follows: Figure 5 As shown.

[0029] Specifically, the feeding screw 1 includes a screw 101, one end of which is connected to a blade 102, and the other end is provided with a connecting bolt 103;

[0030] A groove is designed on the bottom side of the stirring shaft 2. After the top of the screw 101 with the connecting bolt 103 is aligned with the bottom of the stirring shaft 2, the connecting bolt 103 is inserted into the groove to fix the feeding screw 1 to the stirring shaft 2. An annular sleeve 6 is installed on the upper part of the stirring shaft 2, and stirring paddles 7 are symmetrically welded on its outer side. The paddle rod of the stirring paddle 7 is higher than the material in the hopper, and the paddle blades adopt a fan-shaped design. When the stirring shaft 2 drives the feeding screw 1 to rotate, the annular sleeve 6 drives the stirring paddle 7 to rotate in the opposite direction. The fan-shaped paddle blades play a role in continuously pressing down on the material, which helps to expel the air mixed in when the material is conveyed into the hopper, and avoids the paddle rod and paddle blades from disturbing and throwing the material, thus preventing air from being mixed in again.

[0031] The final outcome of this application is as follows:

[0032] The feeding spiral blades adopt a variable diameter design, with the top spiral blades being significantly larger than the other blades. This allows for the rapid pressing of ultra-light and ultra-fine powder into the spiral sleeve. The other spiral blades gradually decrease in size from top to bottom. Combined with the inverted conical spiral sleeve, this achieves progressive compression of the material during the feeding process, thereby expelling air mixed in with the material, increasing bulk density, and reducing the volume after bagging.

[0033] The spiral sleeve consists of an inverted conical sleeve, a sleeve cover, and an annular baffle. In addition to working with the feeding screw to compress the material step by step, the inverted conical sleeve also forms a top sealed space with the sleeve cover to prevent dust generated during the feeding process from spreading upward. The annular baffle welded to the bottom of the sleeve cover also plays a role in blocking dust and inhibiting the generation and spread of dust.

[0034] The impeller of the silo agitator is designed to be higher than the material in the silo and uses fan-shaped blades. While reducing disturbance to the material, it plays a role in continuously pressing down and helps to expel the air mixed in during the material conveying process.

[0035] The bag-clamping weighing device uses a telescopic arm to allow materials to be filled from the bottom of the packaging bag, avoiding the introduction of too much air and increasing the volume of the material during the filling process, and reducing the generation of dust during the filling process.

[0036] The bottom discharge port of the inverted conical spiral sleeve adopts a detachable structural design, which can be replaced with a straight cylinder or a discharge port with different tapers, thereby changing the discharge speed and the bulk density of the material to meet the packaging requirements of ultra-light and ultra-fine powders with different specific gravities.

[0037] The above description is only a preferred embodiment of this application and is not intended to limit the scope of implementation of this application. Any other embodiments whose principles and basic structures are the same as or similar to those of this application are within the protection scope of this application.

Claims

1. A quantitative packaging machine for ultralight and ultrafine powders, characterized in that, The device includes a feeding auger (1) located at the bottom of a conical silo (5), the top of which is connected to a stirring shaft (2). The stirring shaft (2) is provided with an annular sleeve (6) and a stirring paddle (7) is welded on it. The feeding auger (1) is placed inside a sleeve (3) connected to the outlet of the conical silo (5). The inner wall of the sleeve (3) is in clearance fit with the auger to facilitate the discharge of air from the material. The device also includes a clamping sleeve (4) fitted at the outlet of the silo. The clamping sleeve (4) is used to fix the sleeve (3) and the negative pressure dust collector (9). The negative pressure dust collector (9) is used to connect with a dust collector to collect dust generated during the material filling process. The device also includes a bag clamping and weighing assembly (8) located on the outer periphery of the sleeve (3) for clamping the packaging bag.

2. The ultra-light and ultra-fine powder quantitative packaging machine according to claim 1, characterized in that: The sleeve (3) includes a conical cylinder (301), the conical cylinder (301) is fitted with a sleeve cover (302), and the end of the sleeve cover (302) is provided with a baffle (303).

3. The ultra-light and ultra-fine powder quantitative packaging machine according to claim 2, characterized in that: The discharge port of the conical cylinder (301) is detachably connected to a material outlet cylinder (3011) via a thread (3012).

4. The ultra-light and ultra-fine powder quantitative packaging machine according to claim 3, characterized in that: The material outlet cylinder (3011) is cylindrical or conical.

5. The ultra-light and ultra-fine powder quantitative packaging machine according to claim 1, characterized in that: The bag-clamping weighing assembly (8) includes a telescopic arm (801), wherein a drive cylinder (802) is provided at the end of one side of the telescopic arm (801), and an anti-slip block (803) is provided at the end of the other side of the telescopic arm (801) opposite to the drive cylinder (802). The telescopic arm (801) is mounted on a crossbeam (804), which is connected to a vertical beam (805). The crossbeam (804) is also connected to a connecting cylinder (806).

6. The ultra-light and ultra-fine powder quantitative packaging machine according to claim 1, characterized in that: The feeding screw (1) includes a screw (101), one end of which is connected to a blade (102), and the other end is provided with a connecting bolt (103).

Images