Drying, mixing and vacuum-packaging integrated system for sterilizing oxygen absorber

Abstract

The present application relates to a drying, mixing and vacuum-packaging integrated system for a sterilizing oxygen absorber, relating to the technical field of oxygen-absorbing masterbatch production. The system comprises two dryers, a mixer, a vacuum generation system, an oil bath circulation system, and a nitrogen supply system. The two dryers comprise a first dryer and a second dryer, each dryer comprising a cylinder body, a swing driving mechanism, and two swing shafts. The cylinder body comprises an inner shell and an outer shell, a heating cavity being formed between the inner shell and the outer shell. An oil inlet channel and an oil return channel are provided on each swing shaft. A guide member is provided on the outer shell in the heating cavity, a heating channel allowing a medium oil to flow through being formed between the guide member, the inner shell and the outer shell. A baffle section is formed on the heating channel at the bottom of the inner shell, such that the medium oil can flow into the oil return channel along the heating channel and the baffle section. In the present application, the medium oil flows from bottom to top, which effectively avoids the accumulation of the medium oil having low temperature and high density at the bottom of the cylinder body, thereby enabling the medium oil to dry materials more uniformly, and improving the production efficiency of oxygen absorbers.

Description

An integrated system for drying, mixing, and vacuum packaging sterilizing oxygen absorbers. Technical Field

[0001] This application relates to the field of oxygen absorber masterbatch production technology, and in particular to an integrated system for drying, mixing and vacuum packaging of sterilized oxygen absorbers. Background Technology

[0002] Sterilizing oxygen absorbers are chemical agents that combine oxygen absorption and sterilization functions. They not only effectively absorb oxygen within the packaging, preventing product deterioration due to oxidation, but also inhibit or kill microorganisms within the packaging, ensuring the sterility and safety of the product. These oxygen absorbers are widely used in industry, agriculture, and medicine.

[0003] An existing sterilization-type oxygen absorber comprises two components, A and B. Component A contains 60-68 parts nylon, 7-14 parts PET resin, 2.5-3.5 parts SBS, and 1-3 parts SAM resin. Component B contains 13-24.5 parts PET resin and 1.5-2.5 parts catalyst. Components A and B are mixed separately and then processed through a twin-screw extruder, cooling tank, air knife, pelletizer, and vibrating screen to obtain the materials of component A and component B. Components A and B are then dried separately through a double-cone dryer, mixed again to form the oxygen absorber, and then packaged.

[0004] As shown in Figure 1, the existing double-cone dryer includes an inner shell 91, an outer shell 92, and two rotating shafts 93. The inner shell 91 and the outer shell 92 are fixedly connected, forming a closed heating chamber 94 between them. The two rotating shafts 93 are respectively located in the middle of the outer shell 92 and are rotatably connected to the frame to create the oscillation of the double-cone dryer. High-temperature medium oil is introduced into the heating chamber 94 through the oil inlet channel 95 in the rotating shaft 93 to dry the material in the inner shell 91. The medium oil flows back to the oil bath circulation system through the return channel 96 in the other rotating shaft 93. The dried material is discharged from the discharge port at the bottom. However, because the density of the medium oil decreases as the temperature increases, the medium oil with high density and low temperature after heat exchange accumulates at the bottom of the heating chamber 94 and is not easily returned to the oil bath circulation system through the return channel 96. This results in uneven drying of the material by the medium oil, leading to low drying efficiency and thus reducing the production efficiency of the oxygen absorber. Summary of the Invention

[0005] To address the problem of uneven drying of materials by the medium oil in dryers, which leads to low drying efficiency and reduced production efficiency of oxygen absorbers, this application provides an integrated system for drying, mixing, and vacuum packaging of sterilized oxygen absorbers.

[0006] The sterilization-type oxygen absorber drying, mixing, and vacuum packaging integrated system provided in this application adopts the following technical solution:

[0007] An integrated system for drying, mixing, and vacuum sealing a sterilizing oxygen absorber includes two sets of dryers, a mixer, a vacuum generating system, an oil bath circulation system, and a nitrogen supply system. The two sets of dryers are a first dryer and a second dryer. The first dryer can dry component A, and the second dryer can dry component B. The mixer can mix components A and B. The vacuum generating system is connected to the first dryer, the second dryer, and the mixer to create a vacuum environment within them. The oil bath circulation system is connected to the first dryer and the second dryer to create a drying environment within them. The nitrogen supply system is connected to the first dryer, the second dryer, and the mixer to introduce nitrogen into them. A sealing machine is located at the bottom of the mixer, which can vacuum seal the output of the mixer.

[0008] The dryer includes a drum, a swing drive mechanism, and two swing shafts. The two swing shafts are fixedly connected to both sides of the drum in a horizontal direction and are rotatably connected to the frame so that the drum can rotate around the swing shafts. The swing drive mechanism is connected to the swing shafts so as to drive the drum to swing back and forth.

[0009] Each of the cylinders includes an inner shell and an outer shell, with a heating chamber formed between the inner shell and the outer shell. The inner shell contains a chamber for holding materials. Two swing shafts are fixedly connected to the outer shell. The swing shafts are provided with an oil inlet channel and an oil return channel that communicate with the oil bath circulation system. The outer shell is provided with a guide member in the heating chamber. The guide member, the inner shell, and the outer shell form a heating channel for the flow of medium oil. The heating channel forms a baffle at the bottom of the inner shell. The medium oil flowing out of the oil inlet channel can flow into the oil return channel along the heating channel and the baffle.

[0010] By adopting the above technical solution, when the oxygen absorber is mixed and dried, components A and B are respectively introduced into the first dryer and the second dryer. The vacuum generating system evacuates the cylinders of the first dryer and the second dryer. Then, the oil bath circulation system introduces medium oil into the heating chamber to heat the materials in the first dryer and the second dryer. Then, the swing drive mechanism drives the cylinder to swing through the swing shaft to accelerate the drying process of the materials in the cylinder. After components A and B are dried, nitrogen is introduced into the cylinder through the nitrogen supply system to release the vacuum state. Then, the dried components A and B are introduced into the mixer for mixing. The mixing process is still under vacuum. After mixing, the nitrogen supply system introduces nitrogen into the mixer. Then, the oxygen absorber in the mixer is vacuum-packed by the packaging machine, completing the mixing, drying and packaging of the oxygen absorber.

[0011] When the medium oil enters the heating chamber through the oil inlet channel, it flows towards the bottom of the cylinder along the heating channel. When the medium oil passes through the baffle, it flows upward along the heating channel near the inner shell. The medium oil exchanges heat with the inner shell, heating and drying the material inside the inner shell. Then, the medium oil returns to the oil bath circulation system through the oil return channel. During this process, the medium oil flows from bottom to top, which increases the degree of turbulence in the vertical direction, thereby effectively preventing the accumulation of low-temperature, high-density medium oil at the bottom of the cylinder. This makes the drying of the material more uniform and improves the production efficiency of the oxygen absorber.

[0012] Preferably, the inner shell is rotatably connected to the outer shell, and the outer shell is provided with a rotation drive mechanism capable of driving the inner shell to rotate;

[0013] The guide component includes a guide cylinder, which is arranged parallel to the inner shell and the outer shell. The guide cylinder is rotatably arranged with both the inner shell and the outer shell. The guide cylinder is connected to the outer shell through a mounting assembly, and the inner shell is connected to the guide cylinder through a transmission assembly, so as to drive the guide cylinder to rotate in the opposite direction.

[0014] By adopting the above technical solution, the inner shell can be rotated by the drive mechanism, which can increase the agitation of the material inside the inner shell and the uniformity of heat exchange between the inner shell and the medium oil, thereby accelerating the drying rate and uniformity of component A and component B.

[0015] When the inner shell rotates, it drives the guide cylinder to rotate in the opposite direction through the transmission assembly. This is because when the inner shell rotates, due to the drag flow effect, the medium oil will rotate with the inner shell, which can easily lead to uneven local heat exchange. By using the reverse rotation of the guide cylinder, the boundary layer flow near the original object surface is disturbed, the original flow structure is disrupted, the velocity gradient in the boundary layer is reduced, thereby reducing the drag flow effect and improving the uniformity of heat exchange between the medium oil and the inner shell.

[0016] Preferably, the mounting assembly includes a mounting ring plate, which is fixedly disposed on the inner sidewall of the housing. A support portion is formed on the guide cylinder that can overlap the mounting ring plate. The support portion slides against the mounting ring plate to allow the medium oil to flow unidirectionally in the heating channel.

[0017] By adopting the above technical solution, the support part is attached to the mounting ring plate to support the guide cylinder in the heating chamber, thereby improving the stability of the guide cylinder when it rotates.

[0018] Preferably, the swing shaft is provided with an oil guide pipe connected to the oil return channel. The oil guide pipe passes through the mounting ring plate and is connected to the end of the heating channel, so that the medium oil can flow back to the oil return channel along the oil guide pipe.

[0019] By adopting the above technical solution, the medium oil flows along the heating channel to the top of the mounting ring plate, separating the inlet and outlet of the medium oil. This allows the medium oil to form a single flow path during its flow, effectively preventing the inlet medium oil from leaking into the outlet medium oil and causing a drop in the temperature of the inlet medium oil. This reduces the heat loss of the medium oil and improves the heat exchange efficiency between the medium oil and the inner shell.

[0020] Preferably, the mounting ring plate is provided with a lubrication ring groove, and the support part is provided with a sealing ring strip that can cooperate with the lubrication ring groove. The sealing ring strip has multiple inclined guide surfaces on the side facing the bottom wall of the lubrication ring groove. Each inclined guide surface forms a wedge-shaped space with the bottom wall of the lubrication ring groove. The large end of each wedge-shaped space faces the rotation direction of the support part. The support part is provided with an oil guiding channel communicating with the large end of the wedge-shaped space. The oil guiding channel extends through the top wall of the support part so that the medium oil can flow into the wedge-shaped space.

[0021] By adopting the above technical solution, the sealing performance between the sealing ring and the lubrication ring groove can be increased. When the guide cylinder rotates, the medium oil flows into the wedge space from the large end of the wedge space through the oil guide channel. During the movement of the medium oil in the medium space, it is squeezed and generates an upward thrust on the support, which can counteract the pressure of the guide cylinder on the mounting ring plate and reduce the friction between the support and the mounting ring plate.

[0022] Preferably, the support portion is provided with an oil guide bucket, the inlet of the oil guide bucket is directly facing the medium oil, and the outlet of the oil guide bucket is connected to the oil guide channel.

[0023] By adopting the above technical solution, when the support rotates, the medium oil enters through the inlet of the oil guide bucket and enters the oil guide channel along the outlet of the oil guide bucket, which facilitates the flow of the medium oil into the wedge-shaped space.

[0024] Preferably, the transmission assembly includes a drive gear, a steering gear, and a driven gear. The drive gear is coaxially fixed on the outer side wall of the inner shell, the driven gear is coaxially fixed on the inner side wall of the guide cylinder, and the steering gear is rotatably mounted on the outer shell and located between the drive gear and the driven gear, and meshes with the drive gear and the driven gear.

[0025] By adopting the above technical solution, the inner shell drives the drive gear to rotate, the drive gear drives the steering gear to rotate, and the steering gear drives the driven gear to rotate, thereby realizing the opposite rotation of the inner shell and the guide cylinder and improving the stability of the rotation of the inner shell and the guide cylinder.

[0026] Preferably, the inner shell has a sealing cover plate at the feed inlet, which can block the feed inlet. A pressure-resistant hose is connected to the sealing cover plate via a rotating joint, allowing the cylinder to swing. The pressure-resistant hose is connected to the vacuum generating system. 、 The nitrogen supply system is connected via the first three-way solenoid valve.

[0027] By adopting the above technical solution and utilizing the first three-way solenoid valve, the vacuum generation system is realized respectively. 、 The nitrogen supply system is connected to the inner cavity of the shell, enabling vacuum and nitrogen filling operations for the material environment inside the shell. The pressure-resistant hose connects the first three-way solenoid valve while simultaneously allowing the cylinder to swing.

[0028] Preferably, the mixer includes a swing cylinder and two support shafts. The two support shafts are respectively fixedly arranged on both sides of the swing cylinder and rotatably connected to the frame. The support shafts are provided with gas channels communicating with the inner cavity of the swing cylinder. The gas channels are connected to the vacuum generation system and the nitrogen supply system through a second three-way solenoid valve.

[0029] By adopting the above technical solution, the vacuum generation system and the nitrogen supply system are used to perform vacuum and nitrogen filling operations on the swing cylinder respectively. The swing cylinder is used to swing around the support shaft to achieve the mixing operation of component A and component B in the swing cylinder.

[0030] Preferably, the inner shell is provided with a control valve at the discharge port, and the frame is provided with a collection cylinder below the discharge port of the inner shell. The collection cylinder is located above the swing cylinder and is connected to the swing cylinder through a feeding hose, so that the material in the collection cylinder can enter the swing cylinder along the feeding hose.

[0031] By adopting the above technical solution, after the drying of component A in the first dryer and component B in the second dryer is completed, the corresponding control valve is opened, and component A and component B enter the swing cylinder along the corresponding collection cylinder and feeding hose, realizing the feeding of component A and component B. The setting of the feeding hose enables the swing cylinder to swing.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. When the medium oil enters the heating chamber through the oil inlet channel, it flows towards the bottom of the cylinder along the heating channel. When the medium oil passes through the baffle, it flows upward along the heating channel near the inner shell. The medium oil exchanges heat with the inner shell, heating and drying the material inside the inner shell. Then, the medium oil returns to the oil bath circulation system through the oil return channel. During this process, the medium oil flows from bottom to top, which increases the vertical turbulence of the medium oil, thereby effectively preventing the accumulation of low-temperature, high-density medium oil at the bottom of the cylinder. This makes the drying of the material by the medium oil more uniform and improves the production efficiency of the oxygen absorber.

[0034] 2. When the inner shell rotates, the inner shell drives the guide cylinder to rotate in the opposite direction through the transmission assembly. The reverse rotation of the guide cylinder disturbs the boundary layer flow near the original object surface, disrupts the original flow structure, reduces the velocity gradient in the boundary layer, thereby reducing the drag effect and improving the uniformity of heat exchange between the medium oil and the inner shell.

[0035] 3. When the guide cylinder rotates, the medium oil flows into the wedge space from the large end of the wedge space through the oil guide channel. During the movement of the medium space, the medium oil is squeezed and will generate an upward thrust on the support, which can counteract the pressure of the guide cylinder on the mounting ring plate and reduce the friction between the support and the mounting ring plate. Attached Figure Description

[0036] Figure 1 is a schematic diagram of the structure of an existing double cone dryer.

[0037] Figure 2 is a schematic diagram of the structure of an integrated system for drying, mixing and vacuum packaging of a sterilizing oxygen absorber according to an embodiment of this application.

[0038] Figure 3 is a schematic diagram illustrating the structure of the swing drive mechanism.

[0039] Figure 4 is a top view of the dryer.

[0040] Figure 5 is a cross-sectional view along line AA in Figure 4.

[0041] Figure 6 is an enlarged view of part B in Figure 5.

[0042] Figure 7 is a top view of the guide tube.

[0043] Figure 8 is a cross-sectional view along line CC in Figure 7.

[0044] Figure 9 is a top view of the mixer.

[0045] Figure 10 is a cross-sectional view along line DD in Figure 9.

[0046] Explanation of reference numerals in the attached drawings: 1. Dryer; 11. First dryer; 12. Second dryer; 13. Cylinder; 131. Inner shell; 132. Outer shell; 133. Heating chamber; 134. Feed pipe; 135. Discharge pipe; 136. Oil inlet channel; 137. Oil return channel; 14. Swing drive mechanism; 141. Reciprocating rotary motor; 15. Swing shaft; 161. Sealing cover plate; 162. Pressure-resistant hose; 163. First three-way solenoid valve; 2. Mixer; 21. Swing cylinder; 22. Support shaft; 23. Butterfly valve; 24. Gas channel; 25. Second three-way solenoid valve; 3. Vacuum generation system; 31. Vacuum pump; 32. Vacuum pipeline; 4. Oil bath circulation system; 41. Oil pump; 42. Heating oil tank; 43. Oil inlet pipe; 44. Oil return pipe; 5. Nitrogen supply system; 51. High-pressure nitrogen. 52. Tank; 6. Nitrogen pipe; 71. Sealing machine; 71. Guide component; 711. Guide cylinder; 72. Heating channel; 73. Baffle; 74. Rotary drive mechanism; 741. Drive motor; 75. Mounting assembly; 751. Mounting ring plate; 752. Support part; 753. Oil guide pipe; 754. Through hole; 755. Lubrication ring groove; 756. Sealing ring strip; 761. Inclined guide surface; 762. Wedge-shaped space; 763. Oil guide channel; 764. Oil guide hopper; 77. Transmission assembly; 771. Drive gear; 772. Steering gear; 773. Driven gear; 774. Gear shaft; 81. Control valve; 82. Collection cylinder; 83. Feeding hose; 91. Inner shell; 92. Outer shell; 93. Rotating shaft; 94. Heating chamber; 95. Oil inlet channel; 96. Return channel; 10. Frame. Detailed Implementation

[0047] The present application will be further described in detail below with reference to Figures 2-10.

[0048] This application discloses an integrated system for drying, mixing, and vacuum sealing a sterilizing oxygen absorber.

[0049] Referring to Figure 2, an integrated system for drying, mixing, and vacuum packaging a sterilizing oxygen absorber includes two sets of dryers 1, a mixer 2, a vacuum generating system 3, an oil bath circulation system 4, and a nitrogen supply system 5. The two sets of dryers 1 are a first dryer 11 and a second dryer 12. The first dryer 11 dries component A, and the second dryer 12 dries component B. The mixer 2 mixes components A and B. The vacuum generating system 3 is connected to the first dryer 11, the second dryer 12, and the mixer 2, creating a vacuum environment within these units. This vacuum environment is provided to prevent oxidation of components A and B due to contact with oxygen. The oil bath circulation system 4 is connected to the first dryer 11 and the second dryer 12, creating a drying environment within them. In this embodiment, the medium oil is silicone oil. The nitrogen supply system 5 is connected to the first dryer 11, the second dryer 12, and the mixer 2, and introduces nitrogen into these machines. The purpose of introducing nitrogen is to release the vacuum environment inside the cylinder 13 while preventing oxygen from entering. Components A and B from the first dryer 11 and the second dryer 12 enter the mixer 2 for mixing. A sealing machine 6 is installed at the discharge port of the mixer 2. The mixed material falls into the sealing tape inside the sealing machine 6. The sealing tape is then evacuated, and a hot-melt plate is used to heat-seal the opening of the sealing tape.

[0050] Referring to Figure 2, the vacuum generating system 3 in this embodiment includes a vacuum pump 31, which is connected to the first dryer 11, the second dryer 12, and the mixer 2 via a vacuum pipe 32. The nitrogen supply system 5 includes a high-pressure nitrogen tank 51 and a nitrogen pipe 52. The high-pressure nitrogen in the high-pressure nitrogen tank 51 is introduced into the first dryer 11, the second dryer 12, and the mixer 2 through the nitrogen pipe 52. The oil bath circulation system 4 includes an oil pump 41, a heating oil tank 42, an oil inlet pipe 43, and an oil return pipe 44. The heating oil tank 42 is filled with medium oil and heats the medium oil. The oil pump 41 delivers the medium oil in the heating oil tank 42 to the first dryer 11 and the second dryer 12 through the oil inlet pipe 43. After heat exchange in the first dryer 11 and the second dryer 12, the medium oil flows back to the heating oil tank 42 through the oil return pipe 44, thereby completing the circulation of the medium oil.

[0051] During the mixing and drying of the oxygen absorber, components A and B are introduced into the first dryer 11 and the second dryer 12, respectively. The vacuum generating system 3 evacuates the cylinder 13 of the first dryer 11 and the second dryer 12. Then, the oil bath circulation system 4 introduces medium oil into the heating chamber 133 to heat the materials in the first dryer 11 and the second dryer 12. The first dryer 11 then heats and dries component A, and the second dryer 12 heats and dries component B. After the components A and B are dried, nitrogen is introduced into the cylinder 13 through the nitrogen supply system 5 to release the vacuum. Then, the dried components A and B are introduced into the mixer 2 for mixing. The mixing process is still under vacuum. After mixing, the nitrogen supply system 5 introduces nitrogen into the mixer 2. The mixed material in the mixer 2 falls into the sealing strip in the sealing machine 6. Then, the sealing strip is evacuated, and the opening of the sealing strip is sealed by heat fusion plate, thus completing the mixing, drying, and vacuum sealing of the oxygen absorber.

[0052] Referring to Figures 2, 3 and 4, each dryer 1 includes a cylinder 13, a swing drive mechanism 14 and two swing shafts 15. The cylinder 13 is a double-conical cylinder.

[0053] Referring to Figures 4 and 5, the cylinder 13 in this embodiment includes an inner shell 131 and an outer shell 132. The inner shell 131 and the outer shell 132 are arranged in parallel and spaced apart, and a heating chamber 133 is formed between the inner shell 131 and the outer shell 132. A feed pipe 134 is formed at the top of the inner shell 131 and a discharge pipe 135 is formed at the bottom.

[0054] Referring to Figures 5 and 6, two swing shafts 15 are fixedly connected to both sides of the outer casing 132 in the horizontal direction and are rotatably connected to the frame 10. Each swing shaft 15 has an oil inlet channel 136 and an oil return channel 137 communicating with the heating chamber 133. The oil return channel 137 is located inside the oil inlet channel 136. Each oil inlet channel 136 is connected to the oil inlet pipe 43 through a rotary joint, and each oil return channel 137 is connected to the oil return pipe 44 through a flexible hose. The swing drive mechanism 14 includes a reciprocating rotary motor 141 mounted on the frame 10. The first dryer 11 and the second dryer 12 each correspond to one reciprocating rotary motor 141. The reciprocating rotary motor 141 drives the swing shafts 15 to swing through a gear assembly.

[0055] Referring to Figures 5 and 6, the outer shell 132 is provided with a guide 71 in the heating chamber 133. The guide 71 forms a heating channel 72 for the flow of medium oil between the inner shell 131 and the outer shell 132. The heating channel 72 forms a baffle 73 at the bottom of the inner shell 131. The medium oil flowing into the oil inlet channel 136 can flow into the return oil channel 137 along the heating channel 72 and the baffle 73.

[0056] When the medium oil enters the heating chamber 133 through the oil inlet channel 136, the medium oil flows along the heating channel 72 toward the bottom of the cylinder 13. When the medium oil passes through the baffle 73, the medium oil flows upward along the heating channel 72 near the inner shell 131. The medium oil exchanges heat with the inner shell 131, heating and drying the material inside the inner shell 131. Then the medium oil returns to the oil bath circulation system 4 through the oil return channel 137. During this process, the medium oil flows from bottom to top, which can increase the degree of disturbance of the medium oil in the vertical direction, thereby effectively avoiding the accumulation of low-temperature and high-density medium oil at the bottom of the cylinder 13, making the drying of the material by the medium oil more uniform and improving the production efficiency of the oxygen absorber.

[0057] Referring to Figure 5, the inner shell 131 and the outer shell 132 are rotatably connected. Both ends of the outer shell 132 are bent towards their respective centers to form flanges. These flanges are slidably sealed to the corresponding feed pipe 134 and discharge pipe 135, creating a sealed space within the heating chamber 133. Both ends of the outer shell 132 are connected to the inner cylinder via tapered roller bearings, providing vertical support for the inner shell 131. The outer shell 132 is equipped with a rotation drive mechanism 74 capable of driving the inner shell 131 to rotate. In this embodiment, the rotation drive mechanism 74 includes a drive motor 741. The output shaft of the drive motor 741 is vertically upward, and the output shaft of the drive motor 741 is connected to the feed pipe 134 via a meshing gear set to drive the inner shell 131 to rotate. Driving the inner shell 131 to rotate using the drive mechanism increases the agitation of the material within the inner shell 131 and improves the uniformity of heat exchange between the inner shell 131 and the medium oil, thereby accelerating the drying rate and uniformity of components A and B.

[0058] Referring to Figure 3, each feed pipe 134 has a sealing cover plate 161 at its feed inlet. The sealing cover plate 161 is threadedly connected to the feed pipe 134 and seals the feed inlet. A pressure-resistant hose 162 is connected to the sealing cover plate 161. The material of the pressure-resistant hose 162 includes, but is not limited to, polyurethane, nylon, and polytetrafluoroethylene. One end of the pressure-resistant hose 162 is connected to the sealing cover plate 161 through a swivel joint, and the other end is connected to a first three-way solenoid valve 163. The first three-way solenoid valve 163 is connected to the vacuum pipe 32 and the nitrogen pipe 52. The first three-way solenoid valve 163 controls the staggered opening of the vacuum pipe 32, the nitrogen pipe 52, and the pressure-resistant hose 162 to perform vacuuming and nitrogen filling operations on the cavity inside the inner shell 131. The pressure-resistant hose 162 is partially bent to accommodate the swinging of the cylinder 13. The first three-way solenoid valve 163 is used to connect the vacuum generating system 3, the nitrogen supply system 5, and the inner cavity of the inner shell 131, thereby enabling vacuum and nitrogen filling operations on the material environment inside the inner shell 131. The pressure-resistant hose 162 connects the first three-way solenoid valve 163 while simultaneously allowing the cylinder 13 to swing.

[0059] Referring to Figures 5 and 6, the guide member 71 in this embodiment includes a guide cylinder 711. The guide cylinder 711 is arranged parallel to the inner shell 131 and the outer shell 132. The guide cylinder 711 is rotatably arranged with the inner shell 131 and the outer shell 132. The guide cylinder 711 is connected to the outer shell 132 through the mounting assembly 75. The inner shell 131 is connected to the guide cylinder 711 through the transmission assembly 77, which drives the guide cylinder 711 to rotate in the opposite direction.

[0060] Referring to Figures 5 and 6, the mounting assembly 75 in this embodiment includes a mounting ring plate 751. The mounting ring plate 751 is fixedly mounted on the inner sidewall of the outer casing 132 and located above the oil inlet channel 136. A support portion 752 is formed on the guide cylinder 711 that can overlap the mounting ring plate 751. The support portion 752 slides and fits against the mounting ring plate 751, forming a certain gap between the guide cylinder 711 and the outer casing 132. By using the support portion 752 to overlap the mounting ring plate 751, the guide cylinder 711 is supported within the heating chamber 133, improving the stability of the guide cylinder 711 during rotation.

[0061] Referring to Figures 5 and 6, an oil guide pipe 753, communicating with the oil return channel 137, is fixedly connected to the swing shaft 15. The oil guide pipe 753 passes through the mounting ring plate 751 and is connected to the end of the heating channel 72. The guide cylinder 711 has multiple through holes 754 above the support part 752, allowing the medium oil to flow back to the oil return channel 137 along the oil guide pipe 753. The medium oil flows along the heating channel 72 to the top of the mounting ring plate 751, separating the inlet and outlet of the medium oil. This creates a single flow path for the medium oil, effectively preventing the inlet medium oil from leaking into the outlet medium oil and causing a drop in the temperature of the inlet medium oil. This reduces heat loss of the medium oil and improves the heat exchange efficiency between the medium oil and the inner shell 131.

[0062] Referring to Figures 5 and 6, the mounting ring plate 751 is provided with a lubrication ring groove 755, and the support part 752 is provided with a sealing ring strip 756 that can cooperate with the lubrication ring groove 755. The sealing ring strip 756 and the support part 752 are integrally formed.

[0063] Referring to Figures 7 and 8, the sealing ring 756 has multiple inclined guide surfaces 761 on the side facing the bottom wall of the lubrication ring groove 755. Each inclined guide surface 761 forms a wedge-shaped space 762 between itself and the bottom wall of the lubrication ring groove 755. The multiple wedge-shaped spaces 762 are evenly arranged along the circumference of the sealing ring 756. The large end of each wedge-shaped space 762 faces the rotation direction of the support 752. The support 752 has an oil guide channel 763 communicating with the large end of the wedge-shaped space 762. The oil guide channel 763 and the wedge-shaped space 762 are paired one-to-one. Each oil guide channel 763 extends to the top wall of the support 752. An oil guide bucket 764 protrudes from the top wall of the support 752, corresponding one-to-one with each oil guide channel 763. Each oil guide bucket 764 has a rectangular box structure with openings on both adjacent sides, forming an inlet facing the flowing medium oil and an outlet communicating with the oil guide channel 763. When the guide cylinder 711 rotates, the medium oil flows along the oil guide bucket 764 into the wedge-shaped space 762, and flows out through the gap between the sealing ring 756 and the lubrication ring groove 755. The medium oil enters through the inlet of the oil guide bucket 764 and enters the oil guide channel 763 along the outlet of the oil guide bucket 764, facilitating the flow of the medium oil into the wedge-shaped space 762.

[0064] The sealing ring 756 and the lubrication ring groove 755 work together to increase the sealing between the mounting ring plate 751 and the support 752. When the guide cylinder 711 rotates, the medium oil flows into the wedge space 762 from the large end through the oil guide channel 763. During the movement of the wedge space 762, the medium oil is squeezed, which generates an upward thrust on the support 752. This can counteract the pressure of the guide cylinder 711 on the mounting ring plate 751 and reduce the friction between the support 752 and the mounting ring plate 751.

[0065] Referring to Figures 5 and 6, the transmission assembly 77 in this embodiment includes a drive gear 771, a steering gear 772, and a driven gear 773. The drive gear 771 is coaxially fixed on the outer wall of the inner shell 131, and the driven gear 773 is coaxially fixed on the inner wall of the guide cylinder 711. The steering gear 772 is connected to the outer shell 132 via a gear shaft 774. The gear shaft 774 is fixedly connected to the outer shell 132, and the steering gear 772 is rotatably connected to the gear shaft 774. The steering gear 772 is located between the drive gear 771 and the driven gear 773 and meshes with both the drive gear 771 and the driven gear 773. When the inner shell 131 drives the drive gear 771 to rotate, the drive gear 771 drives the steering gear 772 to rotate, and the steering gear 772 drives the driven gear 773 to rotate, thereby achieving opposite rotational drives between the inner shell 131 and the guide cylinder 711 and improving the stability of their rotation.

[0066] Referring to Figure 2, each inner shell 131 has a control valve 81 at the discharge port of the discharge pipe 135 at the bottom. The control valve 81 includes, but is not limited to, one of a butterfly valve 23, a ball valve, a gate valve, or an orifice valve. The frame 10 has a collection cylinder 82 below the discharge port of the discharge pipe 135 of each inner shell 131, and the collection cylinder 82 is positioned above the swing cylinder 21. When the cylinder 13 stops swinging, the discharge pipe 135 is aligned with the collection cylinder 82. Each collection cylinder 82 has a feeding hose 83 installed at the bottom. The material of the feeding hose 83 includes, but is not limited to, one of polyurethane, nylon, and polytetrafluoroethylene. The feeding hose 83 is partially bent and folded to adapt to the swinging motion of the mixer 2.

[0067] Referring to Figures 9 and 10, the mixer 2 in this embodiment includes a swing cylinder 21 and two support shafts 22. The swing cylinder 21 has a double-cone structure. The two support shafts 22 are respectively fixed on both sides of the swing cylinder 21 and are rotatably connected to the frame 10. The support shafts 22 are driven by an external motor to swing. The top feed port of the swing cylinder 21 is blocked by a sealing plate. The ends of the two feeding hoses 83 are fixed to the sealing plate and communicate with the inner cavity of the swing cylinder 21, so that the A component and the B component materials can fall into the swing cylinder 21 along the feeding hoses 83. Each feeding hose 83 is provided with a ball valve at one end near the swing cylinder 21, and the opening and closing of the feeding hose 83 is controlled by the ball valve.

[0068] Referring to Figures 2, 9, and 10, a butterfly valve 23 is provided at the bottom outlet of the swing cylinder 21 to control the discharge of material from the swing cylinder 21. A gas channel 24 communicating with the inner cavity of the swing cylinder 21 is provided on the support shaft 22. The gas channel 24 is connected to the vacuum generating system 3 and the nitrogen supply system 5 via a second three-way solenoid valve 25, which is connected to the gas channel 24 via a rotary joint. Using the second three-way solenoid valve 25, the vacuum generating system 3 and the nitrogen supply system 5 respectively perform vacuum and nitrogen filling operations on the swing cylinder 21. By swinging the swing cylinder 21 around the support shaft 22, the mixing operation of component A and component B within the swing cylinder 21 is achieved.

[0069] After the A component in the first dryer 11 and the B component in the second dryer 12 have finished drying, the corresponding control valve 81 is opened, and the A component and the B component enter the swing cylinder 21 along the corresponding collection cylinder 82 and the feeding hose 83 to realize the feeding of the A component and the B component. The setting of the feeding hose 83 enables the swing cylinder 21 to swing.

[0070] The implementation principle of the sterilization-type oxygen absorber drying, mixing, and vacuum packaging integrated system in this application embodiment is as follows: When mixing, drying, and packaging the oxygen absorber, component A and component B are respectively introduced into the inner shell 131 of the first dryer 11 and the inner shell 131 of the second dryer 12. The vacuum generating system 3 performs a vacuum operation on the inner cavities of the first dryer 11 and the second dryer 12. Then, the oil bath circulation system 4 introduces medium oil into the heating chamber 133. Then, the reciprocating rotary motor 141 drives the cylinder 13 to swing, and the drive motor 741 drives the inner shell 131 to rotate, heating the materials in the first dryer 11 and the second dryer 12. Dryer 11 heats and dries component A, and second dryer 12 heats and dries component B. After components A and B are dried, nitrogen is introduced into cylinder 13 through nitrogen supply system 5 to release the vacuum. Then, the dried components A and B are introduced into swing cylinder 21 through collection cylinder 82 and feeding hose 83 for mixing. The mixing process is still under vacuum. After mixing, nitrogen is introduced into mixer 2 through nitrogen supply system 5. The mixed material in mixer 2 falls into the packaging strip in packaging machine 6. Then, the packaging strip is evacuated, and the opening of the packaging strip is heat-sealed using a hot melt plate to complete the mixing, drying and vacuum sealing of the oxygen absorber.

[0071] When the medium oil enters the heating chamber 133 through the oil inlet channel 136, the medium oil flows along the heating channel 72 toward the bottom of the cylinder 13. When the medium oil passes through the baffle 73, the medium oil flows upward along the heating channel 72 near the inner shell 131. The medium oil exchanges heat with the inner shell 131, heating and drying the material inside the inner shell 131. Then the medium oil returns to the oil bath circulation system 4 through the oil return channel 137. During this process, the medium oil flows from bottom to top, which can increase the degree of disturbance of the medium oil in the vertical direction, thereby effectively avoiding the accumulation of low-temperature and high-density medium oil at the bottom of the cylinder 13, making the drying of the material by the medium oil more uniform and improving the production efficiency of the oxygen absorber.

[0072] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An integrated system for drying, mixing, and vacuum packaging a sterilizing oxygen absorber, characterized in that: The system includes two sets of dryers (1), a mixer (2), a vacuum generating system (3), an oil bath circulation system (4), and a nitrogen supply system (5). The two sets of dryers (1) are divided into a first dryer (11) and a second dryer (12). The first dryer (11) can dry component A, and the second dryer (12) can dry component B. The mixer (2) can mix components A and B. The vacuum generating system (3) is connected to the first dryer (11), the second dryer (12), and the mixer (2) to enable the first dryer (11) and the second dryer (12) to work together. A vacuum environment is generated inside the mixer (2). The oil bath circulation system (4) is connected to the first dryer (11) and the second dryer (12) to generate a drying environment inside the first dryer (11) and the second dryer (12). The nitrogen supply system (5) is connected to the first dryer (11), the second dryer (12) and the mixer (2) to introduce nitrogen into the first dryer (11), the second dryer (12) and the mixer (2). A sealing machine (6) is provided at the bottom of the mixer (2). The sealing machine (6) can vacuum seal the output of the mixer (2). Each of the dryers (1) includes a cylinder (13), a swing drive mechanism (14), and two swing shafts (15). The two swing shafts (15) are fixedly connected to the two sides of the cylinder (13) in the horizontal direction and are rotatably connected to the frame (10) so that the cylinder (13) can rotate around the swing shafts (15). The swing drive mechanism (14) is connected to the swing shafts (15) so as to drive the cylinder (13) to swing back and forth. The cylinder (13) includes an inner shell (131) and an outer shell (132). A heating chamber (133) is formed between the inner shell (131) and the outer shell (132). A material-containing chamber is formed inside the inner shell (131). Both swing shafts (15) are fixedly connected to the outer shell (132). The swing shafts (15) are provided with an oil inlet channel (136) and an oil return channel (137) communicating with the oil bath circulation system (4). The outer shell (132) 32) A guide (71) is provided in the heating chamber (133). A heating channel (72) for the flow of medium oil is formed between the guide (71) and the inner shell (131) and the outer shell (132). A baffle (73) is formed at the bottom of the inner shell (131) in the heating channel (72). The medium oil flowing out of the oil inlet channel (136) can flow into the oil return channel (137) along the heating channel (72) and the baffle (73).

2. The integrated system for drying, mixing, and vacuum packaging of sterilizing oxygen absorbers according to claim 1, characterized in that: The inner shell (131) is rotatably connected to the outer shell (132), and the outer shell (132) is provided with a rotation drive mechanism (74) capable of driving the inner shell (131) to rotate; The guide member (71) includes a guide cylinder (711), which is arranged parallel to the inner shell (131) and the outer shell (132). The guide cylinder (711) is rotatably arranged with the inner shell (131) and the outer shell (132). The guide cylinder (711) is connected to the outer shell (132) through a mounting assembly (75). The inner shell (131) is connected to the guide cylinder (711) through a transmission assembly (77) so as to drive the guide cylinder (711) to rotate in the opposite direction.

3. The integrated system for drying, mixing, and vacuum packaging of sterilizing oxygen absorbers according to claim 2, characterized in that: The mounting assembly (75) includes a mounting ring plate (751) which is fixedly disposed on the inner sidewall of the housing (132). A support portion (752) is formed on the guide cylinder (711) that can overlap the mounting ring plate (751). The support portion (752) slides against the mounting ring plate (751) to allow the medium oil to flow unidirectionally in the heating channel (72).

4. The integrated system for drying, mixing, and vacuum packaging of sterilizing oxygen absorbers according to claim 3, characterized in that: The swing shaft (15) is provided with an oil guide pipe (753) connected to the oil return channel (137). The oil guide pipe (753) passes through the mounting ring plate (751) and is connected to the end of the heating channel (72) so that the medium oil can flow back to the oil return channel (137) along the oil guide pipe (753).

5. The integrated system for drying, mixing, and vacuum packaging of sterilizing oxygen absorbers according to claim 3, characterized in that: The mounting ring plate (751) is provided with a lubrication ring groove (755), and the support part (752) is provided with a sealing ring strip (756) that can cooperate with the lubrication ring groove (755). The sealing ring strip (756) has multiple inclined guide surfaces (761) on the side facing the bottom wall of the lubrication ring groove (755). Each inclined guide surface (761) forms a wedge-shaped space (762) between itself and the bottom wall of the lubrication ring groove (755). The large end of each wedge-shaped space (762) faces the rotation direction of the support part (752). The support part (752) is provided with an oil guide channel (763) that communicates with the large end of the wedge-shaped space (762). The oil guide channel (763) extends through to the top wall of the support part (752) so that the medium oil can flow into the wedge-shaped space (762).

6. The integrated system for drying, mixing, and vacuum packaging of sterilizing oxygen absorbers according to claim 5, characterized in that: The support part (752) is provided with an oil guide bucket (764) protruding outward. The inlet of the oil guide bucket (764) faces the medium oil, and the outlet of the oil guide bucket (764) is connected to the oil guide channel (763).

7. The integrated system for drying, mixing, and vacuum packaging of sterilizing oxygen absorbers according to claim 2, characterized in that: The transmission assembly (77) includes a drive gear (771), a steering gear (772), and a driven gear (773). The drive gear (771) is coaxially fixed on the outer side wall of the inner shell (131), and the driven gear (773) is coaxially fixed on the inner side wall of the guide cylinder (711). The steering gear (772) is rotatably mounted on the outer shell (132) and located between the drive gear (771) and the driven gear (773), and meshes with the drive gear (771) and the driven gear (773).

8. The integrated system for drying, mixing, and vacuum packaging of sterilizing oxygen absorbers according to claim 2, characterized in that: The inner shell (131) is provided with a sealing cover plate (161) at the feed inlet. The sealing cover plate (161) can block the feed inlet. A pressure-resistant hose (162) is connected to the sealing cover plate (161) through a rotating joint so that the cylinder (13) can swing. The pressure-resistant hose (162) is connected to the vacuum generating system (3) and the nitrogen supply system (5) through a first three-way solenoid valve (163).

9. The integrated system for drying, mixing, and vacuum packaging of sterilizing oxygen absorbers according to claim 2, characterized in that: The mixer (2) includes a swing cylinder (21) and two support shafts (22). The two support shafts (22) are respectively fixed on both sides of the swing cylinder (21) and rotatably connected to the frame (10). The support shafts (22) are provided with gas channels (24) communicating with the inner cavity of the swing cylinder (21). The gas channels (24) are connected to the vacuum generating system (3) and the nitrogen supply system (5) through a second three-way solenoid valve (25).

10. The integrated system for drying, mixing, and vacuum packaging of sterilizing oxygen absorbers according to claim 9, characterized in that: The inner shell (131) is provided with a control valve (81) at the discharge port. The frame (10) is provided with a collection cylinder (82) below the discharge port of the inner shell (131). The collection cylinder (82) is located above the swing cylinder (21) and is connected to the swing cylinder (21) through a feeding hose (83) so that the material in the collection cylinder (82) can enter the swing cylinder (21) along the feeding hose (83).

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