Aluminum sulfate powder packaging machine

Through the material conveying system combining the screw conveying assembly and the stirring assembly, the problem of aluminium sulfate powder agglomeration is solved, efficient and accurate packaging and automatic cleaning is achieved, and production efficiency is improved and costs are reduced.

CN223116665UActive Publication Date: 2025-07-18FOSHAN JINSHILI ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Application Number
CN202421734679.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-22
Publication Date
2025-07-18
Estimated Expiration
2034-07-22

AI Technical Summary

Technical Problem

The existing automatic powder packaging machines are prone to agglomeration when packaging aluminum sulfate powder, which affects packaging efficiency and accuracy. At the same time, the cutting device is prone to clogging and residues are difficult to clean, which increases production costs.

Method used

A material conveying system combining spiral conveying components and stirring components is adopted, combined with oscillation components and return components, to achieve crushing, uniform conveying and automatic cleaning of aluminum sulfate powder.

Benefits of technology

It improves packaging efficiency and accuracy, reduces material waste, avoids blockage of the cutting device, and reduces production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of packaging machines, in particular to an aluminum sulfate powder packaging machine which comprises a case, a feeding mechanism, a material conveying mechanism, a discharging mechanism and a driving mechanism, the feeding mechanism, the material conveying mechanism, the discharging mechanism and the driving mechanism are arranged on the case, and a stirring assembly is arranged in the feeding mechanism and is in transmission connection with the material conveying mechanism; the material conveying mechanism comprises a first spiral conveying assembly and a second spiral conveying assembly, the first spiral conveying assembly and the second spiral conveying assembly are transversely arranged below the feeding mechanism, and one end of the first spiral conveying assembly is in transmission connection with one end of the stirring assembly through a chain and a chain wheel; one end of the second spiral conveying assembly is in linkage connection with the driving mechanism, and an oscillation assembly is arranged between the other end of the second spiral conveying assembly and the discharging mechanism. A material returning assembly is further connected between the discharging mechanism and the first spiral conveying assembly. The aluminum sulfate powder can be quickly crushed and stirred, the packaging efficiency is improved, and the residual aluminum sulfate powder in the packaging machine can be automatically cleaned.
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Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to an aluminum sulfate powder packaging machine. Background Technique

[0002] Aluminum sulfate (chemical formula Al2(SO4)3, molecular weight 342.15), is a white rhombic crystal powder with a density of 1.69 g / mL (25 °C). It is used as a precipitant for sizing agents such as rosin size and wax emulsion in the paper industry, as a flocculant in water treatment, and can also be used as an internal retaining agent in foam fire extinguishers, as a raw material for manufacturing alum and aluminum white, as a petroleum decolorizing and deodorizing agent, as a raw material for certain drugs, etc. It can also be used to manufacture artificial gems and high-grade ammonium alum.

[0003] When producing aluminum sulfate powder, due to its particle characteristics, the aluminum sulfate powder may agglomerate during the packaging process. The agglomerated aluminum sulfate powder not only affects the accuracy and efficiency of packaging, but also affects its melting rate, thereby reducing its efficacy.

[0004] When the existing powder automatic packaging machine packages aluminum sulfate powder, it usually only has a single packaging feature, that is, when packaging the agglomerated aluminum sulfate powder, it is broken by another mixer and then packaged by the packaging machine. This not only affects production efficiency but also increases production costs. At the same time, after packaging the aluminum sulfate powder, there is often some aluminum sulfate powder remaining in the feeding device, which may cause blockage of the feeding device, and the aluminum sulfate powder remaining in the feeding device cannot be effectively cleaned. Summary of the Utility Model

[0005] In order to solve the technical defects mentioned in the above background technique, the purpose of the utility model is to provide an aluminum sulfate powder packaging machine, which can effectively crush and stir aluminum sulfate powder, improve packaging efficiency, and realize automatic cleaning of the residual aluminum sulfate powder in the packaging machine.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An aluminum sulfate powder packaging machine includes a machine case, a feeding mechanism, a material conveying mechanism, a discharging mechanism, and a driving mechanism arranged on the machine case. The feeding mechanism is internally provided with a stirring assembly, and the stirring assembly is in transmission connection with the material conveying mechanism. The material conveying mechanism includes a first screw conveying assembly and a second screw conveying assembly. The first screw conveying assembly and the second screw conveying assembly are horizontally arranged below the feeding mechanism, and one end of the first screw conveying assembly is in transmission connection with one end of the stirring assembly through a chain and sprocket. One end of the second screw conveying assembly is in linkage connection with the driving mechanism, and a vibration assembly is arranged between the other end and the discharging mechanism. The vibration assembly is used to shake off the materials adhering to the inside of the discharging mechanism. A return material assembly for returning the excess materials is also connected between the discharging mechanism and the first screw conveying assembly.

[0008] Preferably, the feeding mechanism includes a feeding box, a feeding hopper, and a ventilation port. The top end of the feeding box is provided with a feeding port, and a transparent cover plate for observing the remaining amount of materials is also arranged on one side of the feeding box. The feeding hopper is in a horn-shaped structure with a wider top and a narrower bottom, and the bottom end of the feeding hopper is a closed structure. The ventilation port is arranged at the top end of the feeding box and is located on one side of the feeding port.

[0009] Preferably, the stirring assembly includes a stirring shaft, stirring rollers, and bearing mounting seats. The stirring shaft is horizontally arranged at the bottom of the feeding box, and both ends of the stirring shaft are rotatably connected to the bearing mounting seats. A plurality of stirring rollers are provided, and the plurality of stirring rollers are arranged on the stirring shaft in a staggered manner.

[0010] Preferably, the first screw conveying assembly includes a first screw feeding shaft, first screw blades, and a discharging disk. The first screw feeding shaft is placed horizontally, and one end of the first screw feeding shaft is in transmission connection with the stirring shaft and the driving mechanism respectively, and the other end is communicated with the return material assembly. The first screw blades are spirally arranged on the first screw feeding shaft. The discharging disk is respectively connected to the first screw feeding shaft and the second screw conveying assembly to transfer the materials from the first screw conveying assembly into the second screw conveying assembly.

[0011] Preferably, the return material assembly includes a return pipe, a return material cylinder, and an air flow control valve. One end of the return pipe is connected to the inside of the discharging mechanism, and the other end is communicated with the return material cylinder. The return material cylinder is installed on the first screw conveying assembly through a flange fixing plate. The air flow control valve is installed on the return pipe to control the return of the materials, and an air source is externally connected to the air flow control valve.

[0012] Preferably, the second screw conveyor assembly includes a mounting table, a second screw feed shaft for the material, and second screw blades. The mounting table is fixedly connected to the chassis. The second screw feed shaft and the second screw blades are mounted on the mounting seat, and one end of the second screw feed shaft is connected to the drive mechanism through a pulley drive, and the other end is communicated with the discharging mechanism. The second screw blades are spirally arranged on the second screw feed shaft.

[0013] Preferably, the discharging mechanism includes a support plate, a guide pipe, and a conveyor belt. The guide pipe is a hollow cylindrical structure and penetrates through the support plate. One end of the guide pipe is communicated with the second screw conveyor assembly, and the conveyor belt is fixed on the support plate and is arranged below the guide pipe.

[0014] Preferably, the vibration assembly includes a fixed seat, a vibrator, and a transmission bar. The fixed seat is sleeved on the guide pipe. The vibrators are symmetrically mounted on both sides of the fixed seat, and the output end of the vibrator is connected to the transmission bar, and the transmission bar abuts against both sides of the guide pipe.

[0015] Preferably, the drive mechanism includes a drive motor, a reduction motor, and a coupling. The output end of the drive motor is connected to the first screw feed shaft through a pulley drive. The output end of the reduction motor is connected to the second screw feed shaft through a coupling.

[0016] In summary, the beneficial effects of the present utility model are as follows:

[0017] The aluminum sulfate powder packaging machine of the present utility model combines a screw elevator and a conveyor belt system, greatly improving the packaging efficiency. By setting a stirring assembly, the packaging quality is further improved, and the problem of caking of aluminum sulfate powder is effectively solved. At the same time, the material conveying mechanism can lift the stirred aluminum sulfate powder to the discharging mechanism, and the vibration assembly arranged on the discharging mechanism is used to shake off the aluminum sulfate powder adhering to the inside of the discharging mechanism to achieve continuous and stable material supply. In addition, by setting a return material assembly, the excess material after vibration can be returned to the feeding mechanism to reduce material waste. Thus, efficient and accurate packaging is achieved. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the aluminum sulfate powder packaging machine of the present utility model;

[0019] Figure 2 is a front view of the aluminum sulfate powder packaging machine of the present utility model;

[0020] Figure 3 is a top view of the aluminum sulfate powder packaging machine of the present utility model;

[0021] Figure 4 isFigure 3 Cross-sectional view of plane A-A in the middle;

[0022] Figure 5 It is an enlarged structural diagram of the oscillation component in the present utility model.

[0023] Explanation of the reference numerals in the figure:

[0024] 1. Chassis; 2. Feeding mechanism; 21. Feeding box; 211. Feeding port; 22. Discharge hopper; 23. Vent hole; 24. Transparent cover plate; 3. Material conveying mechanism; 31. First screw conveying component; 311. First screw feeding shaft; 312. First screw blade; 313. Discharge tray; 32. Second screw conveying component; 321. Installation table; 322. Second screw feeding shaft; 323. Second screw blade; 4. Discharge mechanism; 41. Support plate; 42. Guide pipe; 43. Conveyor belt; 5. Driving mechanism; 51. Driving motor; 52. Reducing motor; 53. Coupling; 6. Stirring component; 61. Stirring shaft; 62. Stirring roller; 63. Bearing mounting seat; 7. Connecting bracket; 8. Returning material component; 81. Return pipe; 82. Returning material cylinder; 83. Air flow control valve; 9. Oscillation component; 91. Fixed seat; 92. Oscillator; 93. Transmission bar; 10. Control system. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art shall fall within the protection scope of the present utility model.

[0026] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present utility model.

[0027] In the description of the present utility model, if there are words such as "several" for description, its meaning is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the base number, above, below, within, etc. are understood as including the base number. If there is a description of first, second, third, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0028] The following will further elaborate on an embodiment of a Figures 1-5 aluminum sulfate powder packaging machine of the present utility model in conjunction with the

[0029] An aluminum sulfate powder packaging machine, as Figures 1 to 3 shown, includes a chassis 1, a feeding mechanism 2 provided on the chassis 1, a material conveying mechanism 3, a discharging mechanism 4, and a driving mechanism 5. The feeding mechanism 2 is internally provided with a stirring assembly, and the stirring assembly is in transmission connection with the material conveying mechanism 3; the material conveying mechanism 3 includes a first screw conveying assembly 31 and a second screw conveying assembly 32. The first screw conveying assembly 31 and the second screw conveying assembly 32 are horizontally arranged below the feeding mechanism 2, and one end of the first screw conveying assembly 31 is in transmission connection with one end of the stirring assembly through a chain and sprocket; one end of the second screw conveying assembly 32 is in linkage connection with the driving mechanism 5, and a vibration assembly 9 is arranged between the other end and the discharging mechanism 4. The vibration assembly 9 is used to shake off the materials adhering and bonding in the discharging mechanism; a return material assembly 8 for returning the excess materials is also connected between the discharging mechanism 4 and the first screw conveying assembly 31.

[0030] Specifically, the stirring assembly provided in the feeding mechanism 2 can stir the aluminum sulfate powder entering the feeding mechanism 2 evenly, break up the lumps in the aluminum sulfate powder, and ensure the fluidity and uniformity of the powder; the broken aluminum sulfate powder is lifted to the discharging mechanism 4 under the action of the material conveying mechanism 3 to realize continuous and stable material supply; in addition, by setting the return material assembly 8, the excess materials remaining in the discharging mechanism 4 can be returned to the feeding mechanism 2 to reduce material waste; thus, efficient and accurate packaging is achieved.

[0031] It should be noted that a control system 10 is also provided in the chassis 1. The control system 10 adopts a PLC logic controller, and the control system 10 is electrically connected to the feeding mechanism 2, the material conveying mechanism 3, and the driving mechanism 5 respectively to control the processes of automatic feeding, stirring and breaking, timed and quantitative packaging, and discharging of the materials. The operator can adjust the speed of loading and unloading and the value of quantitative packaging according to the actual production requirements. How the control system 10 controls the feeding mechanism 2, the material conveying mechanism 3, and the driving mechanism 5 is the prior art, and the control method of the control system 10 is not the innovation of this application, so it will not be elaborated in this application.

[0032] In this embodiment, as Figure 1 shown, the feeding mechanism 2 includes a feeding box 21, a blanking hopper 22 and a ventilation opening 23. A feeding port 211 is formed at the top end of the feeding box 21, and a transparent cover plate 24 for observing the remaining amount of materials is further arranged on one side of the feeding box 21; the blanking hopper 22 has a flared structure with a wider top and a narrower bottom, and the bottom end of the blanking hopper 22 is a closed structure. An opening for communicating with the first screw conveyor assembly 31 is arranged on the side plate of the blanking hopper 22; the ventilation opening 23 is arranged at the top end of the feeding box 21, and the ventilation opening 23 is located on one side of the feeding port 211.

[0033] Specifically, when putting in aluminum sulfate powder, it can be put in from the feeding port 211, and the remaining amount can be observed through the transparent cover plate 24 on one side of the feeding box 21. At the same time, the ventilation opening 23 is opened, so that the dust generated during the blanking process can be discharged from the ventilation opening 23. At the same time, after the aluminum sulfate powder enters the feeding box 21, it automatically falls into the lower blanking hopper 22 and is stirred under the action of the stirring assembly in the blanking hopper 22 to break the agglomerated aluminum sulfate powder therein, avoiding agglomeration and blocking the packaging machine, and at the same time making the aluminum sulfate powder more uniform.

[0034] In this embodiment, as Figure 4 shown, the stirring assembly 6 includes a stirring shaft 61, stirring rollers 62 and bearing mounting seats 63. The stirring shaft 61 is horizontally arranged at the bottom of the feeding box 21, and both ends of the stirring shaft 61 are rotatably connected to the bearing mounting seats 63. A plurality of stirring rollers 62 are arranged, and the plurality of stirring rollers 62 are arranged on the stirring shaft 61 in a staggered manner.

[0035] Specifically, the stirring shaft 61 is driven by a driving mechanism 5. When the aluminum sulfate powder is in the blanking hopper 22, the agglomerated aluminum sulfate powder is automatically broken by the action of the stirring rollers 62, and the broken aluminum sulfate powder is accelerated and discharged into the lower first screw conveyor assembly 31.

[0036] In this embodiment, the first spiral conveying assembly 31 includes a first spiral feeding shaft 311, a first spiral blade 312, and a discharge tray 313. The first spiral feeding shaft 311 is placed horizontally, and one end of the first spiral feeding shaft 311 is respectively connected to the stirring shaft 61 and the driving mechanism 5 in a transmission manner, and the other end is communicated with the return material assembly 8; the first spiral blade 312 is spirally arranged on the first spiral feeding shaft 311; the discharge tray 313 is respectively connected to the first spiral feeding shaft 311 and the second spiral conveying assembly 32, so that the material is transferred from the first spiral conveying assembly 31 to the second spiral conveying assembly 32; the second spiral conveying assembly 32 includes a mounting table 321, a second spiral feeding shaft 322 for materials, and a second spiral blade 323. The mounting table 321 is fixedly connected to the machine case 1. The second spiral feeding shaft 322 and the second spiral blade 323 are mounted on the mounting seat, and one end of the second spiral feeding shaft 322 is connected to the driving mechanism 5 through a pulley in a transmission manner, and the other end is communicated with the discharging mechanism 4; the second spiral blade 323 is spirally arranged on the second spiral feeding shaft 322.

[0037] Specifically, the crushed aluminum sulfate powder will be conveyed along the rotation direction of the first spiral blade 312 to the discharge tray 313 under the drive of the first spiral feeding shaft 311 and fall into the second spiral conveying assembly 32. At the same time, under the drive of the second spiral feeding shaft 322, it is conveyed along the rotation direction of the second spiral blade 323 to the discharging mechanism 4. During the discharging process, in order to control the discharging speed, part of the aluminum sulfate powder will accumulate between the second spiral conveying assembly 32 and the discharging mechanism 4. Therefore, the vibration assembly 9 is provided to shake off the aluminum sulfate powder adhering to the inner wall of the discharging mechanism 4, and through the provided return material assembly 8, this part of the powder can be re-flowed back to the first spiral conveying assembly 31 to reduce waste.

[0038] Among them, as Figure 5 shown, the return material assembly 8 includes a return pipe 81, a return cylinder 82, and an air flow control valve 83. One end of the return pipe 81 is connected to the discharging mechanism 4, and the other end is communicated with the return cylinder 82. The return cylinder 82 is installed on the first spiral conveying assembly 31 through a flange fixing plate; the air flow control valve 83 is installed on the return pipe 81 and is used to control the return of the material; and an air source is externally connected to the air flow control valve 83; under the action of the air flow control valve 83, the return pipe 81 can draw the residual aluminum sulfate powder in the discharging mechanism 4 back into the first spiral conveying assembly 31. Under the action of the first spiral feeding shaft 311 and the first spiral blade 312, it flows back into the second spiral conveying assembly 32 through the discharge tray 313 again. In this way, the dosage for one discharge can be completed, the packaging accuracy can be improved, and waste can be avoided at the same time.

[0039] In this embodiment, the discharging mechanism 4 includes a support plate 41, a guide pipe 42, and a conveyor belt 43. The guide pipe 42 is a hollow cylindrical structure and penetrates through the support plate 41. One end of the guide pipe 42 is connected to the second screw conveyor assembly 32. The conveyor belt 43 is fixed to the support plate 41 and is arranged below the guide pipe 42.

[0040] Specifically, a connecting bracket 7 is connected between the support plate 41 and the chassis 1, and the support plate 41 is fixed to one side of the chassis 1 through the connecting bracket 7. The discharging end of the guide pipe 42 is provided with an inclined mouth structure, which is convenient for discharging materials. At the same time, the conveyor belt 43 arranged below the outlet of the guide pipe 42 uses an externally connected bagging device to bag and package the discharged aluminum sulfate powder and then drop it onto the conveyor belt 43, so as to quickly and orderly transport the packaged aluminum sulfate powder to the designated position.

[0041] In order to better clean the aluminum sulfate powder remaining in the guide pipe 42, a vibration assembly 9 is also provided at the connection between the guide pipe 42 and the second screw feeding shaft 322. The vibration assembly 9 includes a fixed seat 91, a vibrator 92, and a transmission bar 93. The fixed seat 91 is sleeved on the guide pipe 42. The vibrators 92 are symmetrically installed on both sides of the fixed seat 91, and the output ends of the vibrators 92 are connected to the transmission bar 93. The transmission bar 93 abuts against both sides of the guide pipe 42. The vibrator 92 is a common component in the prior art, so its working principle will not be described in detail here. It transmits the vibration force to the guide pipe 42 through the transmission bar 93, so as to quickly knock down the aluminum sulfate powder adhered in the guide pipe 42 and also accelerate the discharging speed.

[0042] In this embodiment, the driving mechanism 5 includes a driving motor 51, a reduction motor 52, and a coupling 53. The output end of the driving motor 51 is connected to the first screw feeding shaft 311 through a pulley drive; the output end of the reduction motor 52 is connected to the second screw feeding shaft 322 through the coupling 53.

[0043] Specifically, the driving methods of the first screw conveyor assembly 31 and the second screw conveyor assembly 32 are set separately. Among them, the first screw conveyor assembly 31 is driven by the driving motor 51, and the stirring assembly 6 is synchronously controlled through a chain and sprocket, so that the aluminum sulfate powder can be synchronously transported to the first screw conveyor assembly 31 after being broken; while the second screw conveyor assembly 32 is driven by the reduction motor 52. Since the second screw conveyor assembly 32 is used to transport the aluminum sulfate powder, therefore, the reduction motor 52 can also control the interval feeding time according to the production requirements to achieve the effect of timed packaging.

[0044] The working principle of the present utility model:

[0045] When packaging aluminum sulfate powder, the operator pre-sets the required packaging weight and discharging frequency through the control system 10 in advance; after starting the packaging machine, the aluminum sulfate powder is poured into the feeding mechanism 2, and the agglomerated aluminum sulfate powder therein is crushed by the stirring assembly 6 in the feeding mechanism 2, and then the stirred aluminum sulfate powder is respectively lifted to the discharging mechanism 4 by the first screw conveying assembly 31 and the second screw conveying assembly 32 in the material conveying mechanism 3 to complete discharging; wherein, the aluminum sulfate powder adhering to the inner part of the discharging mechanism 4 is shaken off under the action of the shaking assembly 9, so that the aluminum sulfate powder remaining in the discharging mechanism 4 will return to the first screw conveying assembly 31 under the action of the material returning assembly 8 to be re-fed; and the control system 10 automatically controls the next discharging according to the set time interval.

[0046] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.

Claims

1. An aluminum sulfate powder packaging machine, comprising a chassis, a feeding mechanism, a material conveying mechanism, a discharging mechanism and a driving mechanism arranged on the chassis, characterized in that, The feeding mechanism is internally provided with a stirring assembly, and the stirring assembly is in transmission connection with the material conveying mechanism; the material conveying mechanism includes a first screw conveying assembly and a second screw conveying assembly. The first screw conveying assembly and the second screw conveying assembly are horizontally arranged below the feeding mechanism, and one end of the first screw conveying assembly is in transmission connection with one end of the stirring assembly through a chain and sprocket; one end of the second screw conveying assembly is in linkage connection with the driving mechanism, and a vibration assembly is arranged between the other end and the discharging mechanism. The vibration assembly is used to shake off the materials adhered to the inner part of the discharging mechanism; a return material assembly for returning the redundant materials is also connected between the discharging mechanism and the first screw conveying assembly.

2. The aluminum sulfate powder packaging machine according to claim 1, characterized in that, The feeding mechanism includes a feeding box, a blanking hopper and a ventilation port. The top end of the feeding box is provided with a feeding port, and a transparent cover plate for observing the remaining amount of materials is also arranged on one side of the feeding box; the blanking hopper is in a flared structure with a wide top and a narrow bottom, and the bottom end of the blanking hopper is a closed structure. An opening for communicating with the first screw conveying assembly is arranged on the side plate of the blanking hopper; the ventilation port is arranged at the top end of the feeding box and is located on one side of the feeding port.

3. The aluminum sulfate powder packaging machine according to claim 2, wherein, The stirring assembly includes a stirring shaft, stirring rollers and bearing mounting seats. The stirring shaft is horizontally arranged at the bottom of the feeding box, and both ends of the stirring shaft are rotationally connected with the bearing mounting seats. A plurality of stirring rollers are arranged, and the plurality of stirring rollers are arranged in a staggered manner on the stirring shaft.

4. The aluminum sulfate powder packaging machine according to claim 3, characterized in that, The first screw conveying assembly includes a first screw feeding shaft, first screw blades and a discharging disc. The first screw feeding shaft is placed horizontally, and one end of the first screw feeding shaft is in transmission connection with the stirring shaft and the driving mechanism respectively, and the other end is communicated with the return material assembly; the first screw blades are spirally arranged on the first screw feeding shaft; the discharging disc is respectively connected to the first screw feeding shaft and the second screw conveying assembly, so that the materials are transferred from the first screw conveying assembly into the second screw conveying assembly.

5. The aluminum sulfate powder packaging machine according to claim 4, characterized in that, The return material assembly includes a return pipe, a return material cylinder and an air flow control valve. One end of the return pipe is connected to the inside of the discharging mechanism, and the other end is communicated with the return material cylinder. The return material cylinder is installed on the first screw conveying assembly through a flange fixing plate; the air flow control valve is installed on the return pipe for controlling the return of the materials; and an air source is externally connected to the air flow control valve.

6. The aluminum sulfate powder packaging machine according to claim 5, characterized in that, The second screw conveying assembly includes a mounting table, a second screw feeding shaft and second screw blades. The mounting table is fixedly connected to the machine case. The second screw feeding shaft and the second screw blades are installed on the mounting seat. One end of the second screw feeding shaft is in transmission connection with the driving mechanism through a belt pulley, and the other end is communicated with the discharging mechanism; the second screw blades are spirally arranged on the second screw feeding shaft.

7. The aluminum sulfate powder packaging machine according to claim 6, characterized in that, The discharging mechanism includes a support plate, a guide pipe and a conveyor belt. The guide pipe is a hollow cylindrical structure and penetrates through the support plate. One end of the guide pipe is communicated with the second screw conveying assembly. The conveyor belt is fixed on the support plate and is arranged below the guide pipe.

8. The aluminum sulfate powder packaging machine according to claim 1, characterized in that, The oscillation assembly includes a fixed seat, an oscillator and a transmission bar. The fixed seat is sleeved on the material guiding pipe. The oscillators are symmetrically installed on both sides of the fixed seat, and the output end of the oscillator is connected to the transmission bar. The transmission bar abuts against both sides of the material guiding pipe.

9. The aluminum sulfate powder packaging machine according to claim 1, characterized in that The drive mechanism includes a drive motor, a reduction motor and a coupling. The output end of the drive motor is connected to the first spiral feeding shaft through a pulley drive; the output end of the reduction motor is connected to the second spiral feeding shaft through a coupling.