Improved spiral push type valve bag packaging machine

Abstract

The utility model provides an improved spiral push type valve bag packaging machine which comprises a material pushing mechanism which pushes materials in a material bin to a packaging table, a first material pushing assembly, a second material pushing assembly and a third material pushing assembly. The first pushing assembly comprises a first stirring shaft and a first blade connected with the first stirring shaft; the second material pushing assembly is arranged between the second material pushing assembly and the packaging table, the second material pushing assembly comprises a second stirring shaft and second blades connected with the second stirring shaft, the second blades are tooth-shaped blades, the distance between the second blades is smaller than that between the first blades, and the second stirring shaft is connected with the second stirring shaft. The closer the distance between the second blades is to the packaging table, the smaller the distance between the second blades is. The solid-gas mixing state of materials can be broken through, solid-gas separation is accelerated, the proportion of solid materials entering a packaging bag is increased, the gas content of powder is effectively reduced, and the filling rate of packaging is increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to packaging machinery technical field, concretely relates to an improved spiral propelling type packaging machine for valve port bag packaging. BACKGROUND

[0002] Valve port bag is a popular packaging bag, which is not easy to mix with foreign matters during packaging, has less dust overflow, and has a square bag after packaging, so that the stacking type is neat and beautiful, and the product packaging level can be improved by using the valve port bag packaging, and is favored by enterprises.

[0003] The existing valve port bag packaging machine is generally divided into three categories: impeller propelling type, air flow conveying type and spiral propelling type. In order to improve the packaging speed and capacity, the traditional spiral propelling type valve port bag packaging machine blows air at the front end of the spiral to fluidize the powder while propelling the material with the spiral, so that the powder quickly enters the packaging bag. This packaging method is very good when the packaging density of the powder (such as flour) is greater than 0.4 g / cm3, but when the packaging density of the light powder (such as silica lightening agent) is 0.05-0.4 g / cm3, the air blowing will further increase the gas content of the powder, reduce the filling rate of the packaging bag, and cause the problem of long packaging time. SUMMARY

[0004] In view of the above problems, the utility model provides an improved spiral propelling type valve port bag packaging machine, which aims to solve the problem of long packaging time caused by low filling rate in the packaging process of light powder.

[0005] The technical scheme of the present application is an improved spiral propelling type valve port bag packaging machine, which comprises a material pushing mechanism, the material pushing mechanism pushes the material in the material bin to the packaging table, and the material pushing mechanism comprises:

[0006] One end of the first material pushing assembly is connected to one side of the material bin,

[0007] The first material pushing assembly comprises a first stirring shaft and a first blade connected to the first stirring shaft;

[0008] The second material pushing assembly is arranged between the second material pushing assembly and the packaging table, the second material pushing assembly comprises a second stirring shaft and a second blade connected to the second stirring shaft, the second blade is a toothed blade, the spacing between the second blades is smaller than the spacing between the first spiral blades, and the spacing between the second blades is smaller as it is closer to the packaging table.

[0009] Further, the second stirring shaft comprises a thick section, a transition section and a thin section, the thin section is arranged close to the packaging table, the diameter of the thin section is smaller than that of the thick section, and the diameter of the transition section gradually decreases from that of the thick section to that of the thin section.

[0010] Further, the second stirring blade comprises a large blade, a transition blade and a small blade, the small blade is arranged on the thin section, the large blade is arranged on the thick section, and the transition blade is arranged on the transition section, and the areas of the large blade, the transition blade and the small blade gradually decrease.

[0011] Further, the periphery of the thin section and the small blade is sleeved with a filling pipe.

[0012] Further, the bin is provided with a stirring assembly, the stirring assembly comprises a third stirring shaft and a stirring rod connected with the third stirring shaft, the stirring rod comprises a first stirring rod and a second stirring rod, the first stirring rod and the second stirring rod are arranged in parallel, and the length of the first stirring rod is greater than that of the second stirring rod.

[0013] Further, the bin comprises a first bin and a second bin, the second bin is arranged downstream of the first bin, a partition plate is arranged between the first bin and the second bin, and the stirring assembly is arranged in the second bin.

[0014] Further, the capacity of the second bin is greater than that of the first bin.

[0015] Further, the second pushing assembly further comprises a filling nozzle, the filling nozzle is arranged at one end of the second stirring shaft close to the packaging table, and a detection hole is arranged on the filling nozzle.

[0016] Further, the packaging machine further comprises a bag detection assembly, the bag detection assembly comprises a pneumatic cylinder and a positive pressure detection device, the pneumatic cylinder is opposite to the detection hole, and the positive pressure detection device is used to detect whether the gas pressure in the detection hole reaches a preset value.

[0017] The beneficial technical effects of the present application are as follows:

[0018] By improving the design of the pushing mechanism, especially in the packaging process of light powder, the tooth-shaped blade design of the second pushing assembly and the gradually decreasing spacing can break the solid-gas mixed state, accelerate the solid-gas separation, increase the solid content of the material entering the packaging bag, effectively reduce the gas content of the powder and improve the filling rate of the packaging, and there is extra space in the packaging bag, so that the material packaging process is smooth and the packaging speed is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1: The overall structure schematic diagram of the improved spiral pushing valve bag packaging machine of the application;

[0020] Figure 2 : The structure schematic diagram of the first pushing assembly of the application;

[0021] Figure 3 : The structure schematic diagram of the second pushing assembly of the application;

[0022] Figure 4 : The butterfly valve structure schematic diagram of the improved spiral pushing valve bag packaging machine of the application;

[0023] Figure 5 : The structure schematic diagram of an embodiment of the improved spiral pushing valve bag packaging machine of the application;

[0024] Figure 6 : The structure schematic diagram of another embodiment of the improved spiral pushing valve bag packaging machine of the application;

[0025] In the above figure: 1 pushing mechanism, 101 first pushing assembly, 1011 first stirring shaft, 1012 first blade, 102 second pushing assembly, 1021 second stirring shaft, 10211 thick segment, 10212 transition segment, 10213 thin segment, 1022 second blade, 10221 large blade, 10222 transition blade, 10223 small blade, 2 stock bin, 201 first stock bin, 202 second stock bin, 3 packaging table, 4 filling pipe, 5 material falling channel, 6 butterfly valve, 7 stirring assembly, 701 third stirring shaft, 702 stirring rod, 7021 first stirring rod, 7022 second stirring rod, 8 filling nozzle, 9 bag setting detection assembly, 901 air cylinder. DETAILED DESCRIPTION

[0026] The following embodiments further illustrate the content of the application, but should not be understood as limiting the application. Modifications or replacements of the method, steps or conditions of the application, without departing from the spirit and essence of the application, all belong to the scope of the application.

[0027] The existing valve bag packaging machine is mainly composed of a rack, a stock bin, a pushing mechanism, a packaging table and a control system. When packaging powder, the existing valve bag packaging machine often needs to blow air at the front end of the screw to fluidize the powder while pushing the material with the pushing mechanism, which leads to a significant increase in the gas content of the powder to be packaged when it reaches the valve bag, forming a solid-gas mixed state, resulting in a significant reduction in the filling rate, thereby leading to a long packaging time.

[0028] The improved spiral pushing valve bag packaging machine of the application effectively solves this problem. The specific implementation is as follows.

[0029] In some embodiments, asFigures 1-3 As shown, an improved spiral propulsion valve bag packaging machine includes a pushing mechanism 1, which pushes the material in the hopper 2 towards the packaging table 3. The pushing mechanism 1 includes:

[0030] The first pushing component 101 has one end connected to one side of the hopper 2. The first pushing component 101 includes a first stirring shaft 1011 and a first blade 1012 connected to the first stirring shaft 1011.

[0031] The second feeding assembly 102 is disposed between the second feeding assembly 102 and the packaging platform 3. The second feeding assembly 102 includes a second stirring shaft 1021 and a second blade 1022 connected to the second stirring shaft 1021. The second blade 1022 is a toothed blade. The distance between the second blades 1022 is smaller than the distance between the first blades 1012, and the distance between the second blades 1022 is smaller as it gets closer to the packaging platform 3.

[0032] The feeding mechanism 1 includes a first feeding component 101 and a second feeding component 102, which work together to push materials from the hopper 2 to the packaging table 3. The first feeding component 101 is responsible for pushing the materials from the initial position of the hopper 2 to the junction with the second feeding component 102. The first stirring shaft 1011 and the first blade 1012 of the first component can effectively stir and push the materials, avoiding accumulation or jamming of materials during the pushing process.

[0033] The second feeding component 102 further optimizes the material feeding process, especially performing well in the packaging of lightweight powders. Its second blade 1022, with its toothed blade design and gradually decreasing spacing, can break the solid-gas mixture state of the material, accelerate solid-gas separation, increase the proportion of solid material entering the packaging bag, and improve the filling rate of the packaging.

[0034] In some embodiments, such as Figure 3 As shown, the second stirring shaft 1021 includes a coarse section 10211, a transition section 10212, and a fine section 10213. The fine section 10213 is disposed close to the packaging platform 3. The diameter of the fine section 10213 is smaller than the diameter of the coarse section 10211. The diameter of the transition section 10212 gradually decreases from the diameter of the coarse section 10211 to the diameter of the fine section 10213.

[0035] By designing the second stirring shaft 1021 into a three-section structure—a coarse section 10211, a transition section 10212, and a fine section 10213—the material pushing effect is further improved. The coarse section 10211 has a larger diameter, capable of carrying more material and ensuring the stability of the material during the pushing process. As the material advances towards the packaging platform 3, the diameter of the transition section 10212 gradually decreases, causing the material to be gradually compressed and reducing the gas content in the material. Finally, the fine section 10213 has the smallest diameter, allowing the material to be arranged more tightly when pushed to the packaging platform 3, further improving the packaging filling rate.

[0036] In some embodiments, such as Figure 3 As shown, the second blade 1022 includes a large blade 10221, a transition blade 10222, and a small blade 10223. The small blade 10223 is disposed on the thin section 10213, the large blade 10221 is disposed on the thick section 10211, and the transition blade 10222 is disposed on the transition section 10212. The areas of the large blade 10221, the transition blade 10222, and the small blade 10223 gradually decrease.

[0037] In this embodiment, the pushing effect is further enhanced by designing the second blade 1022 to include a large blade 10221, a transition blade 10222, and a small blade 10223. The large blade 10221, located on the coarse section 10211, has a larger area and can more effectively stir and push the material. As the material is pushed towards the packaging platform 3, the area of ​​the transition blade 10222 and the small blade 10223 gradually decreases, which, in conjunction with the change in the diameter of the second stirring shaft 1021, causes the material to be gradually subjected to stronger compression, further reducing the gas content in the material and improving the filling rate of the packaging.

[0038] In some embodiments, such as Figure 4 As shown, a filling tube 4 is sleeved around the thin segment 10213 and the small blade 10223. The inner diameter of the filling tube is slightly larger than the maximum outer diameter of the small blade 10223 to ensure that the small blade 10223 does not rub against the filling tube 4 when rotating. Setting the inner diameter of the filling tube 4 slightly larger than the maximum outer diameter of the small blade 10223 ensures that as little gas as possible enters the filling tube. The filling tube 4 further compresses and shapes the material, so that the material is in a tightly packed state before entering the packaging bag, thereby further improving the filling rate of the packaging.

[0039] In some embodiments, such as Figure 6As shown, the silo 2 is provided with a stirring assembly 7, which comprises a third stirring shaft 701 and a stirring rod 702 connected with the third stirring shaft 701, the stirring rod 702 comprises a first stirring rod 7021 and a second stirring rod 7022, which are arranged in parallel, and the length of the first stirring rod 7021 is greater than that of the second stirring rod 7022.

[0040] In this embodiment, by providing the stirring assembly 7 in the silo 2, the uniformity and flowability of the material are further improved. The third stirring shaft 701 of the stirring assembly 7 drives the stirring rod 702 to rotate, and the first stirring rod 7021 and the second stirring rod 7022 are arranged in parallel, which can effectively stir the material in the silo 2 and avoid material caking or accumulation. In particular, the length of the first stirring rod 7021 is greater than that of the second stirring rod 7022, which makes the stirring range wider and the stirring effect better. Through the stirring action of the stirring assembly 7, the uniform distribution of the material in the silo 2 is ensured, so that the pushing mechanism 1 can push the material more smoothly, further improving the packaging efficiency.

[0041] In some embodiments, as Figure 5 As shown, the silo 2 comprises a first silo 201 and a second silo 202, the second silo 202 is arranged downstream of the first silo 201, a partition plate is arranged between the first silo 201 and the second silo 202, and the stirring assembly 7 is arranged in the second silo 202.

[0042] In this embodiment, the first silo 201 is an auxiliary silo for connecting with the discharge port of the equipment user, and the second silo 202 is a degassing silo for storing the material, allowing the material to stand for a period of time for degassing, and further removing the gas in the material through the stirring action of the stirring assembly 7, thereby improving the density of the material. The first silo 201 and the second silo 202 are isolated by the partition plate, which ensures the orderly flow of the material and avoids the confusion of the material in the silo. The capacity of the second silo 202 is greater than that of the first silo 201, which can store more material and reduce the need for frequent feeding, thereby improving the continuous working capacity of the packaging machine. Due to the presence of the stirring assembly 7, the material will not bridge to cause blockage, ensuring smooth packaging.

[0043] In some embodiments, the capacity of the second silo is greater than that of the first silo.

[0044] By designing the capacity of the second hopper 202 to be greater than the capacity of the first hopper 201, more material can be accommodated, the continuous working time of the packaging machine is prolonged, the frequency of material addition is reduced, and thus the overall packaging efficiency is improved. In addition, the larger second hopper 202 also provides more sufficient standing time for the material, which helps the gas in the material to be further released, improves the density of the material, and further improves the filling rate of the packaging.

[0045] In some embodiments, as shown in Figure 5 The second pushing assembly further comprises a filling nozzle 8 arranged at one end of the second stirring shaft 1021 close to the packaging table 3, and a detection hole is arranged on the filling nozzle 8. The packaging machine further comprises a bag detection assembly 9 comprising a pneumatic cylinder 901 and a positive pressure detection device, the pneumatic cylinder is aligned with the detection hole, and the positive pressure detection device is used to detect whether the gas pressure in the detection hole reaches a preset value.

[0046] The working principle of the bag detection device in the present application is that when the pneumatic cylinder 901 acts, it is aligned with the detection hole opened on the filling nozzle 8, and the positive pressure value is detected by blowing gas with positive pressure. If the bag is properly sleeved, the bag will block the detection hole, the positive pressure value will be large, and the packaging machine is allowed to start. If the valve port bag is not properly sleeved, the positive pressure value will be small, and the packaging machine is not allowed to start. If the positive pressure value continuously drops below the preset value for a period of time, the bag detection assembly 9 will send an alarm signal to prompt the operator to check whether the packaging bag is properly installed, so as to avoid waste of material and packaging failure caused by improper sleeving of the packaging bag.

[0047] In the existing valve port bag packaging machine, since light material is usually in the form of air conveying, there is pressure in the hopper, and the flowability of light powder is good. Even if the packaging machine does not start, the material will flow out from the filling nozzle 8.

[0048] Therefore, in some embodiments, a material falling channel 5 is arranged between the first pushing assembly 101 and the second pushing assembly 102, and a butterfly valve 6 is arranged in the material falling channel 5.

[0049] By arranging the butterfly valve 6, when the packaging machine is not working, the butterfly valve 6 can be closed to prevent the material from flowing out of the material falling channel 5, thereby avoiding waste of material and packaging failure. The opening and closing of the butterfly valve 6 can be controlled by a control system to realize automatic operation and improve the intelligent level of the packaging machine.

[0050] In summary, the improved spiral pushing type valve port bag packaging machine provided by the present application improves the filling rate and efficiency of packaging by optimizing the design of the pushing mechanism, especially in the packaging process of light powder.

[0051] Although, above has used general description, specific implementation and test, has made detailed description to the utility model, can make some modification or improvement to it on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model, all belong to the range claimed by the utility model.

Claims

1. An improved spiral propulsion valve bag packaging machine, characterized in that, The packaging machine includes a pushing mechanism that pushes materials from the hopper toward the packaging table. The pushing mechanism includes: The first feeding assembly has one end connected to one side of the hopper. The first feeding assembly includes a first stirring shaft and a first blade connected to the first stirring shaft; The second feeding assembly is disposed between the first feeding assembly and the packaging table. The second feeding assembly includes a second stirring shaft and a second blade connected to the second stirring shaft. The second blade is a toothed blade. The spacing between the second blades is smaller than the spacing between the first blades, and the spacing between the second blades is smaller as they get closer to the packaging table.

2. The improved spiral propulsion valve bag packaging machine as described in claim 1, characterized in that, The second stirring shaft includes a coarse section, a transition section, and a fine section. The fine section is located close to the packaging platform, and the diameter of the fine section is smaller than the diameter of the coarse section. The diameter of the transition section gradually decreases from the diameter of the coarse section to the diameter of the fine section.

3. The improved spiral propulsion valve bag packaging machine as described in claim 2, characterized in that, The second blade includes a large blade, a transition blade, and a small blade. The small blade is disposed on the thin section, the large blade is disposed on the thick section, and the transition blade is disposed on the transition section. The area of ​​the large blade, the transition blade, and the small blade gradually decreases.

4. The improved spiral propulsion valve bag packaging machine as described in claim 3, characterized in that, A filling tube is fitted around the thin segment and the small blade.

5. The improved screw-propelled valve bag packaging machine as described in claim 1, characterized in that, A material discharge channel is provided between the first material feeding component and the second material feeding component, and a butterfly valve is provided in the material discharge channel.

6. The improved spiral propulsion valve bag packaging machine as described in claim 1, characterized in that, The hopper is equipped with a stirring assembly, which includes a third stirring shaft and a stirring rod connected to the third stirring shaft. The stirring rod includes a first stirring rod and a second stirring rod, which are arranged in parallel, and the length of the first stirring rod is greater than the length of the second stirring rod.

7. The improved spiral propulsion valve bag packaging machine as described in claim 6, characterized in that, The silo includes a first silo and a second silo, the second silo is located downstream of the first silo, a partition is provided between the first silo and the second silo, and the stirring assembly is provided in the second silo.

8. The improved spiral propulsion valve bag packaging machine as described in claim 7, characterized in that, The capacity of the second hopper is greater than that of the first hopper.

9. The improved spiral propulsion valve bag packaging machine as described in claim 1, characterized in that, The second feeding assembly also includes a filling nozzle, which is located at one end of the second stirring shaft near the packaging platform, and the filling nozzle is provided with a detection hole.

10. The improved spiral propulsion valve bag packaging machine as described in claim 9, characterized in that, The packaging machine also includes a bag detection component, which includes a cylinder and a positive pressure detection device. The cylinder is positioned directly opposite the detection hole, and the positive pressure detection device is used to detect whether the gas pressure inside the detection hole reaches a preset value.

Images