Feeding device of back sealing liquid packaging machine

Abstract

The utility model relates to the technical field of liquid packaging machine equipment, and discloses a feeding device of a back sealing liquid packaging machine, which comprises a liquid storage tank, the upper side of the liquid storage tank is rotatably connected with a second bevel gear, and the lower side of the second bevel gear downwards penetrates through an upper tank cover of the liquid storage tank and is fixedly connected with a plurality of connecting rods; a plurality of connecting rods are arranged in the liquid storage tank, the lower ends of the plurality of connecting rods are jointly and fixedly connected with a central cylinder, a shaftless auger blade is rotatably connected in the central cylinder, and the upper end of the shaftless auger blade is fixedly connected with a transmission rod. The shaftless auger blade can convey macromolecular substances settled below the liquid storage tank to the upper-layer space of the liquid storage tank along the central cylinder, and the macromolecular substances are mixed with an upper-layer low-density solution, so that the density difference value of the upper-layer solution and the lower-layer solution is reduced, and the densities of the upper-layer solution and the lower-layer solution in the whole liquid storage tank tend to be uniform relatively.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid packaging machine equipment, and in particular to a feeding device for a back-sealing liquid packaging machine. Background Technology

[0002] When using a liquid packaging machine to package pharmaceuticals containing high-quality protein, the high-quality protein pharmaceuticals are usually first injected into the storage tank above the packaging machine through pipes or manually. Then, the packaging machine bag-making process, high-precision metering pump injection, vacuuming and other processes are completed to fill the pharmaceuticals. However, in practice, we have found that in existing liquid packaging machines for pharmaceutical slurry packaging, although the solutions in the upper and lower spaces of the storage tank are stirred, the distribution of high-quality protein in the upper and lower layers of the slurry is not uniform.

[0003] For example, Chinese utility model patent CN212556893U discloses a feeding device for a liquid packaging machine, including a storage tank with a top cover fixedly installed on the top. Although this solution can mix the liquid in the device by setting a stirring paddle to prevent sedimentation caused by prolonged static placement and ensure the uniformity of liquid filling, large molecules in the liquid, such as high-quality proteins, have greater natural gravity and a tendency to settle downwards. Even if the storage tank is rotated regularly or irregularly by setting a stirring rod, it cannot solve the problem that the overall density of the lower layer solution in the tank is greater than that of the upper layer solution during the rotation of the stirring rod. This leads to the problem that even if the medicines are filled in the same batch of storage tanks, the medicine bags filled earlier may have a higher drug concentration, while the medicine bags filled later may have a lower drug concentration. Based on this, a feeding device for a back-sealed liquid packaging machine that can solve the above problems is proposed. Utility Model Content

[0004] To address the technical problem of uneven concentration in the hopper of a liquid packaging machine, this utility model provides a feeding device for a back-sealing liquid packaging machine.

[0005] This utility model is achieved using the following technical solution: a feeding device for a back-sealed liquid packaging machine, comprising a liquid storage tank, a second bevel gear rotatably connected to the upper side of the liquid storage tank, the lower side of the second bevel gear passing downward through the upper cover of the liquid storage tank and fixedly connected to multiple connecting rods, the lower ends of the multiple connecting rods being fixedly connected to a central cylinder, a shaftless auger blade rotatably connected inside the central cylinder, a transmission rod fixedly connected to the upper end of the shaftless auger blade, the outer side of the transmission rod being rotatably connected to the inner side of the second bevel gear, an auger drive mechanism for rotating the shaftless auger blade being provided on the upper side of the liquid storage tank, a partition mechanism being provided on the outer side of the central cylinder, a final stage stirring mechanism being provided at the lower end of the shaftless auger blade, and a filling pipe being connected to the upper side of the liquid storage tank.

[0006] As a further improvement to the above solution, the auger drive mechanism includes a mounting plate fixedly connected to the upper side of the liquid storage tank. A servo motor is mounted on the side of the mounting plate away from the transmission rod. The output end of the servo motor passes through the mounting plate and is fixedly connected to a drive gear. A first bevel gear is rotatably connected to the upper side of the mounting plate and fixedly connected to the upper end of the transmission rod. The drive gear meshes with the first bevel gear and the second bevel gear simultaneously.

[0007] As a further improvement to the above solution, the partition mechanism includes a plurality of first partitions and a plurality of second partitions fixedly connected to the inner side of the liquid storage tank, wherein the plurality of first partitions and second partitions are distributed at intervals from top to bottom;

[0008] The central cylinder is rotatably connected at the center of each of the first partitions, and multiple edge grooves are provided at the outer edge of each of the first partitions.

[0009] A central trough is provided at the center of each of the second partitions. The central cylinder passes through the axes of the multiple central troughs from top to bottom. A rake-type stirring mechanism is provided on the upper side of each of the first and second partitions.

[0010] As a further improvement to the above solution, the rake-type stirring mechanism includes multiple rake arms arranged above each of the first partition plates. One end of each of the multiple rake arms is fixedly connected to the outside of the central cylinder. The multiple rake arms are arranged in a circumferential array. Multiple positive rake teeth are fixedly connected to the lower side of each of the first rake arms. The lower side of each positive rake tooth is slidably connected to the upper side of the first partition plate.

[0011] Above each of the second partitions, there are multiple second rake arms that are fixedly connected to the outside of the central cylinder. The multiple second rake arms are arranged in a circumferential array. Multiple reverse rake teeth are fixedly connected to the lower side of each second rake arm. The lower side of each reverse rake tooth is slidably connected to the upper side of the second partition.

[0012] As a further improvement to the above scheme, the final stage stirring mechanism includes a limiting frame fixedly connected to the lower side of the lowest partition plate, and a rotor fixedly connected to the lower end of the shaftless auger blade is rotatably connected to the inner side of the limiting frame. The lower end of the rotor is fixedly connected to a stirring blade.

[0013] As a further improvement to the above solution, the lower end of the storage tank is connected to an injection pump unit.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model has a central cylinder and a shaftless auger blade that rotate in opposite directions in the center of the liquid storage tank. The shaftless auger blade can transport the large molecular substances that settle at the bottom of the liquid storage tank to the upper space of the liquid storage tank along the central cylinder, and mix them with the low-density solution in the upper layer, thereby reducing the density difference between the upper and lower layers of solution and making the density of the upper and lower layers of solution in the entire liquid storage tank relatively uniform.

[0016] 2. This utility model sets up multiple No. 1 and No. 2 partitions, with edge grooves on the No. 1 partition and a central groove on the No. 2 partition. At this time, the macromolecules in the solution can only flow down along the edge grooves on the No. 1 partition to the No. 2 partition under the action of the rake-type stirring mechanism, and then flow down along the central grooves on the No. 2 partition to the next No. 1 partition, which helps to achieve the same result. In addition, the circumferential array distribution of the edge grooves on the multiple No. 1 partitions can significantly improve the balance of the uniform distribution of high-quality protein and other substances in the entire storage tank, which has extremely high practicality. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the feeding device of a back-sealing liquid packaging machine provided by this utility model;

[0018] Figure 2 for Figure 1 Internal structure diagram;

[0019] Figure 3 for Figure 1 A schematic diagram of a local structure in the image;

[0020] Figure 4 for Figure 3 A schematic diagram of the exploded structure;

[0021] Figure 5 A schematic diagram of the structure of partition No. 1 and partition No. 2 in one embodiment of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the positive and negative rake teeth in one embodiment of the present invention.

[0023] Explanation of key symbols:

[0024] 1. Injection pump unit; 2. Storage tank; 3. Filling pipe; 4. Servo motor; 5. Mounting plate; 6. First bevel gear; 7. Drive gear; 8. Transmission rod; 9. Shaftless auger blade; 10. Central trough; 11. Second bevel gear; 12. Central cylinder; 13. Connecting rod; 14. Edge trough; 15. First partition plate; 16. First rake arm; 17. Positive rake teeth; 18. Second rake arm; 19. Reverse rake teeth; 20. Second partition plate; 21. Limiting frame; 22. Rotor; 23. Stirring blade. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Example:

[0027] Please combine Figures 1-6 This embodiment of a back-sealing liquid packaging machine feeding device includes a liquid storage tank 2, which is installed on the upper side of the liquid packaging machine. A second bevel gear 11 is rotatably connected to the upper side of the liquid storage tank 2. The lower side of the second bevel gear 11 passes downward through the upper cover of the liquid storage tank 2 and is fixedly connected to multiple connecting rods 13. The lower ends of the multiple connecting rods 13 are fixedly connected to a central cylinder 12. A shaftless auger blade 9 is rotatably connected inside the central cylinder 12. It should be noted that a shaftless auger is used here. Instead of a shafted auger, the shaftless auger is used for conveying liquids, i.e., water-containing media, resulting in higher conveying efficiency. The upper end of the shaftless auger blade 9 is fixedly connected to a transmission rod 8, which is rotatably connected to the inner side of the second bevel gear 11. An auger drive mechanism that rotates the shaftless auger blade 9 is provided on the upper side of the storage tank 2. A baffle mechanism is provided on the outer side of the central cylinder 12. A final stage stirring mechanism is provided at the lower end of the shaftless auger blade 9. A filling pipe 3 is connected to the upper side of the storage tank 2.

[0028] With the above technical solution, when the transmission rod 8 rotates, it can directly drive the shaftless auger blade 9 in the central cylinder 12 to rotate. The shaftless auger blade 9 can then push the solution on the lower side of the storage tank 2 to the upper space of the tank, thereby reducing the density difference between the upper and lower layers of solution. Compared with traditional stirring, it has a significant advantage in uniform density mixing.

[0029] Please combine Figure 1 As shown, the auger drive mechanism includes a mounting plate 5 fixedly connected to the upper side of the liquid storage tank 2. A servo motor 4 is mounted on the side of the mounting plate 5 away from the transmission rod 8. The output end of the servo motor 4 passes through the mounting plate 5 and is fixedly connected to a drive gear 7. A first bevel gear 6 is rotatably connected to the upper side of the mounting plate 5 and is fixedly connected to the upper end of the transmission rod 8. The drive gear 7 meshes with the first bevel gear 6 and the second bevel gear 11 simultaneously.

[0030] With the above technical solution, when the drive gear 7 rotates, the first bevel gear 6 and the second bevel gear 11 will rotate in opposite directions. At this time, the shaftless auger blade 9 connected to the first bevel gear 6 and the central cylinder 12 connected to the lower side of the second bevel gear 11 will also rotate in opposite directions.

[0031] Please combine Figure 3 and Figure 4As shown, in this embodiment, the partition mechanism includes two No. 1 partitions 15 and one No. 2 partition 20 that are fixedly connected to the inside of the liquid storage tank 2. In other embodiments, the number of partitions should be set according to the specific scenario and the capacity of the liquid storage tank 2. The two No. 1 partitions 15 and the No. 2 partition 20 are distributed at intervals from top to bottom.

[0032] Through the first partition 15 and the second partition 20, the entire liquid storage tank 2 can be divided into multiple different solution spaces. In the presence of macromolecular substances, it can ensure that the solution density distribution of the entire tank is more uniform.

[0033] Please combine Figure 2 As shown, the central cylinder 12 is rotatably connected at the center of each partition 15, and multiple edge grooves 14 are provided at the outer edge of each partition 15.

[0034] With the above technical solution, thanks to the circular array distribution of the edge troughs 14, the solution flowing from the upper side of the first partition 15 to the lower layer of the second partition 20 must flow evenly from the edge troughs 14. With the assistance of the rake-type stirring mechanism, the entire solution is mixed more evenly.

[0035] Please combine Figure 4 As shown, a central trough 10 is provided at the center of each partition 20. The diameter of the central trough 10 is much larger than the diameter of the central cylinder 12. The central cylinder 12 passes through the axis of one central trough 10 from top to bottom. A rake-type stirring mechanism is provided on the upper side of each partition 15 and partition 20.

[0036] The above technical solution allows the solution in the storage tank 2 to move back and forth between the central trough 10 and the edge trough 14, which impedes the flow rate of the entire solution and creates space for the rake-type stirring mechanism to stir.

[0037] Please combine Figure 4 As shown, in this embodiment, the rake-type stirring mechanism includes three rake arms 16 arranged above each partition 15. One end of each of the three rake arms 16 is fixedly connected to the outside of the central cylinder 12. The three rake arms 16 are arranged in a circumferential array. Each rake arm 16 has multiple positive rake teeth 17 fixedly connected to its lower side. The lower side of each positive rake tooth 17 is slidably connected to the upper side of the partition 15.

[0038] Above each of the second partition plates 20, there are three second rake arms 18 that are fixedly connected to the outside of the central cylinder 12. The three second rake arms 18 are arranged in a circumferential array. Each second rake arm 18 has multiple reverse rake teeth 19 fixedly connected to its lower side. The lower side of each reverse rake tooth 19 is slidably connected to the upper side of the second partition plate 20.

[0039] Please combine Figure 4As shown, the final stage stirring mechanism includes a limiting frame 21 fixedly connected to the lower side of the lowest partition 15. The inner side of the limiting frame 21 is rotatably connected to a rotor 22 fixedly connected to the lower end of the shaftless auger blade 9. The lower end of the rotor 22 is fixedly connected to a stirring blade 23.

[0040] The stirring blade 23 performs a final stirring step before the filling solution is discharged from the injection pump unit 1, so that the solution is mixed more evenly.

[0041] Please combine Figure 1 As shown, the lower end of the storage tank 2 is connected to the injection pump unit 1. The injection pump unit 1 is a high-precision metering pump with an error of <±1 ml. If the large molecules or particles in the filling liquid are large, the pipe diameter of the injection pump unit 1 needs to be increased to avoid blockage.

[0042] The implementation principle of the feeding device of the back-sealed liquid packaging machine in this application embodiment is as follows: when filling the medicine, the servo motor 4 is started, and the first bevel gear 6 and the second bevel gear 11 are driven to rotate in opposite directions through the drive gear 7. The first bevel gear 6 directly pushes the shaftless auger blade 9 to rotate through the transmission rod 8, and the stirring blade 23, which is fixedly connected to the lower end of the shaftless auger blade 9, rotates together.

[0043] Correspondingly, the lower side of the second bevel gear 11 pushes the central cylinder 12 to rotate through multiple connecting rods 13, while multiple rake-type stirring mechanisms fixedly connected to the outside of the central cylinder 12 rotate together, pushing the solution on the first partition 15 to flow downward from the edge trough 14, and at the same time pushing the solution on the second partition 20 to flow downward from the central trough 10. Finally, the solution flows evenly from the edge trough 14 distributed in a circumferential array on the last first partition 15 to the lower area of ​​the storage tank 2. After being stirred by the stirring blades 23, it can flow out from the injection pump unit 1 to complete the filling.

[0044] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A feeding device for a back-sealing liquid packaging machine, comprising a liquid storage tank (2), characterized in that, The upper side of the storage tank (2) is rotatably connected to a second bevel gear (11). The lower side of the second bevel gear (11) passes downward through the upper cover of the storage tank (2) and is fixedly connected to multiple connecting rods (13). The lower ends of the multiple connecting rods (13) are fixedly connected to a central cylinder (12). The interior of the central cylinder (12) is rotatably connected to a shaftless auger blade (9). The upper end of the shaftless auger blade (9) is fixedly connected to a transmission rod (8). The outer side of the transmission rod (8) is rotatably connected to the inner side of the second bevel gear (11). The upper side of the storage tank (2) is provided with an auger drive mechanism that rotates the shaftless auger blade (9). The outer side of the central cylinder (12) is provided with a partition mechanism. The lower end of the shaftless auger blade (9) is provided with a final stage stirring mechanism. The upper side of the storage tank (2) is connected to a filling pipe (3).

2. The feeding device of a back-sealing liquid packaging machine as described in claim 1, characterized in that, The auger drive mechanism includes a mounting plate (5) fixedly connected to the upper side of the liquid storage tank (2). A servo motor (4) is mounted on the side of the mounting plate (5) away from the transmission rod (8). The output end of the servo motor (4) passes through the mounting plate (5) and is fixedly connected to a drive gear (7). A first bevel gear (6) is rotatably connected to the upper side of the mounting plate (5) and fixedly connected to the upper end of the transmission rod (8). The drive gear (7) meshes with the first bevel gear (6) and the second bevel gear (11) simultaneously.

3. The feeding device of a back-sealing liquid packaging machine as described in claim 1, characterized in that, The partition mechanism includes multiple first partitions (15) and multiple second partitions (20) that are fixedly connected to the inner side of the liquid storage tank (2). The multiple first partitions (15) and second partitions (20) are distributed at intervals from top to bottom. The central cylinder (12) is rotatably connected at the center of each of the first partitions (15), and multiple edge grooves (14) are provided at the outer edge of each of the first partitions (15). A central trough (10) is provided at the center of each of the second partitions (20). The central cylinder (12) passes through the axis of the multiple central troughs (10) from top to bottom. A rake-type stirring mechanism is provided on the upper side of each of the first partitions (15) and the second partitions (20).

4. The feeding device of a back-sealing liquid packaging machine as described in claim 3, characterized in that, The rake-type stirring mechanism includes multiple rake arms (16) arranged above each of the first partitions (15). One end of each of the multiple rake arms (16) is fixedly connected to the outside of the central cylinder (12). The multiple rake arms (16) are arranged in a circumferential array. Multiple positive rake teeth (17) are fixedly connected to the lower side of each of the first rake arms (16). The lower side of each positive rake tooth (17) is slidably connected to the upper side of the first partition (15). Above each of the second partitions (20) are multiple second rake arms (18) fixedly connected to the outside of the central cylinder (12). The multiple second rake arms (18) are arranged in a circumferential array. Multiple reverse rake teeth (19) are fixedly connected to the lower side of each second rake arm (18). The lower side of each reverse rake tooth (19) is slidably connected to the upper side of the second partition (20).

5. The feeding device of a back-sealing liquid packaging machine as described in claim 3, characterized in that, The final stage stirring mechanism includes a limiting frame (21) fixedly connected to the lower side of the lowest partition (15). The inner side of the limiting frame (21) is rotatably connected to a rotor (22) fixedly connected to the lower end of the shaftless auger blade (9). The lower end of the rotor (22) is fixedly connected to a stirring blade (23).

6. The feeding device of a back-sealing liquid packaging machine as described in claim 1, characterized in that, The lower end of the storage tank (2) is connected to the injection pump unit (1).

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