An integrated system for drying, mixing and vacuum packaging of sterilized oxygen absorbents

Abstract

The present application relates to an integrated system for drying, mixing and vacuum packaging of sterilized oxygen absorbents, which relates to the technical field of oxygen absorbent masterbatch production, and includes two groups of dryers, a mixer, a vacuum generating system, an oil bath circulation system and a nitrogen supply system. The two groups of dryers are divided into a first dryer and a second dryer; the dryer includes a cylinder, a swing drive mechanism and two swing shafts, the cylinder includes an inner shell and an outer shell, a heating chamber is formed between the inner shell and the outer shell, an oil inlet channel and an oil return channel are provided on the swing shaft, the outer shell is provided with a guide member in the heating chamber, a heating channel for medium oil flow is formed between the guide member and the inner shell and the outer shell, the heating channel forms a baffle at the bottom of the inner shell, and the medium oil can flow into the return oil channel along the heating channel and the baffle. The medium oil of the present application flows from bottom to top, effectively avoiding the accumulation of medium oil with low temperature and high density at the bottom of the cylinder, so that the medium oil dries the material more evenly, thereby improving the production efficiency of the oxygen absorbent.

Description

Technical Field

[0001] The present application relates to the technical field of oxygen absorbent masterbatch production, and in particular to an integrated system for dry mixing and vacuum packaging of sterilized oxygen absorbents. Background Art

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

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

[0004] like 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 therebetween. The two rotating shafts 93 are respectively positioned in the middle of the outer shell 92 and are rotatably connected to the frame to form the double-cone dryer's swinging motion. High-temperature medium oil is introduced into the heating chamber 94 through an oil inlet channel 95 provided in the rotating shaft 93, drying the material in the inner shell 91. The medium oil then flows back to the oil bath circulation system through a return channel 96 in the other rotating shaft 93. The dried material is then discharged from a discharge port at the bottom. However, since the density of the medium oil decreases with increasing temperature, 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, resulting in low drying efficiency, thereby reducing the production efficiency of the oxygen absorbent. Summary of the Invention

[0005] In order to improve the problem that the medium oil in the dryer dries the material unevenly, resulting in low drying efficiency and reduced production efficiency of the oxygen absorber, the present application provides a sterilization type oxygen absorber dry mixing and vacuum packaging integrated system.

[0006] The present application provides an integrated system for drying, mixing and vacuum packaging of a sterilized oxygen absorber, which adopts the following technical solution: an integrated system for drying, mixing and vacuum packaging of a sterilized oxygen absorber, comprising two groups of dryers, a mixer, a vacuum generating system, an oil bath circulation system and a nitrogen supply system, wherein the two groups of dryers are divided into a first dryer and a second dryer, the first dryer can dry component A, the second dryer can dry component B, and 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 generate a vacuum environment in the first dryer, the second dryer and the mixer; the oil bath circulation system is connected to the first dryer, the second dryer to generate a drying environment in the first dryer and the second dryer; the nitrogen supply system is connected to the first dryer, the second dryer and the mixer to introduce nitrogen into the first dryer, the second dryer and the mixer; a packaging machine is provided at the bottom of the mixer, and the packaging machine can vacuum-package the output of the mixer;

[0007] The dryer includes a drum, a swing drive mechanism, and two swing shafts. The two swing shafts are relatively fixedly connected to both sides of the drum along the 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 to drive the drum to swing back and forth.

[0008] The cylinder includes an inner shell and an outer shell, a heating chamber is formed between the inner shell and the outer shell, a chamber for holding materials is formed in the inner shell, the two swing shafts are fixedly connected to the outer shell, and the swing shafts are provided with an oil inlet channel and an oil return channel connected to the oil bath circulation system. The outer shell is provided with a guide member in the heating chamber, and a heating channel for medium oil flow is formed between the guide member and the inner shell and the outer shell. The heating channel forms a deflection joint at the bottom of the inner shell, and the medium oil flowing out of the oil inlet channel can flow into the oil return channel along the heating channel and the deflection joint.

[0009] By adopting the above technical solution, when the oxygen absorber is mixed and dried, component A and component B are respectively introduced into the first dryer and the second dryer, and the vacuum generating system evacuates the cylinders of the first dryer and the second dryer, and then the oil bath circulation system passes the medium oil through the heating chamber to heat the materials in the first dryer and the second dryer, and then the swing drive mechanism drives the cylinder to swing through the swing shaft to accelerate the drying process of the material in the cylinder. After the drying of component A and component B is completed, nitrogen is introduced into the cylinder through the nitrogen supply system to release the vacuum state, and then the dried component A and component B are introduced into the mixer for mixing, and the mixing process is still in a vacuum state. After mixing, the nitrogen supply system introduces nitrogen into the mixer, and then the oxygen absorber in the mixer is vacuum-packaged by the packaging machine to complete the mixing, drying and packaging of the oxygen absorber.

[0010] When the medium oil enters the heating chamber from the oil inlet channel, the medium oil flows along the heating channel toward the bottom of the cylinder. When the medium oil passes through the deflection joint, the medium oil flows upward along the heating channel close to the inner shell side. The medium oil and the inner shell produce heat exchange, heating and drying the material in 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 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, making the medium oil dry the material more evenly and improving the production efficiency of the oxygen absorber.

[0011] 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;

[0012] The guide member includes a guide cylinder, which is arranged parallel to the inner shell and the outer shell. The guide cylinder, the inner shell and the outer shell are all rotatable. The guide cylinder is connected to the outer shell through an installation component, and the inner shell is connected to the guide cylinder through a transmission component to drive the guide cylinder to rotate in the opposite direction.

[0013] By adopting the above technical solution and using the driving mechanism to drive the inner shell to rotate, the agitation of the material in the inner shell and the uniformity of the heat exchange between the inner shell and the medium oil can be increased, thereby accelerating the drying rate and uniformity of components A and B.

[0014] When the inner shell rotates, the inner shell 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 influence of the drag effect, the medium oil will rotate with the inner shell, which can easily lead to local uneven heat exchange. The reverse rotation of the guide cylinder is used to interfere with the boundary layer flow near the original object surface, disrupt the original flow structure, reduce 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.

[0015] Preferably, the mounting assembly includes a mounting ring plate, which is fixedly arranged on the inner wall of the outer shell. A support portion is formed on the guide cylinder and can overlap the mounting ring plate. The support portion slides in contact with the mounting ring plate to enable the medium oil to form a one-way flow in the heating channel.

[0016] By adopting the above technical solution, the support portion is overlapped on the mounting ring plate to achieve support of the guide cylinder in the heating chamber, thereby improving the stability of the guide cylinder during rotation.

[0017] Preferably, an oil guide pipe connected to the oil return channel is provided on the swing shaft, and the oil guide pipe passes through the connecting arrangement of the mounting ring plate and the end of the heating channel so that the medium oil can flow back to the oil return channel along the oil guide pipe.

[0018] By adopting the above technical solution, the medium oil flows along the heating channel to the top of the mounting ring plate, separating the oil inlet and oil return of the medium oil, so that the medium oil forms a single flow path during the flow process, effectively avoiding the phenomenon of the medium oil inlet temperature dropping caused by the mutual leakage of the medium oil in the oil inlet and the medium oil in the oil return, reducing the heat loss of the medium oil, and improving the heat exchange efficiency between the medium oil and the inner shell.

[0019] Preferably, a lubrication ring groove is provided on the mounting ring plate, and a sealing ring strip capable of cooperating with the lubrication ring groove is provided on the support portion, and the sealing ring strip is provided with a plurality of inclined guide surfaces on a side facing the bottom wall of the lubrication ring groove, and a wedge-shaped space is formed between each of the inclined guide surfaces and the bottom wall of the lubrication ring groove, and the large end of each wedge-shaped space faces the rotation direction of the support portion, and an oil guide channel connected to the large end of the wedge-shaped space is provided on the support portion, and the oil guide channel passes through the top wall of the support portion so that medium oil can flow into the wedge-shaped space.

[0020] By adopting this technical solution, the sealing ring strip and lubrication ring groove cooperate to enhance the sealing performance between the mounting ring plate and the support portion. When the guide cylinder rotates, the dielectric oil flows from the large end of the wedge-shaped space into the wedge-shaped space through the oil guide channel. During the movement of the dielectric space, the dielectric oil is squeezed, generating an upward thrust on the support portion. This offsets the pressure exerted by the guide cylinder on the mounting ring plate and reduces friction between the support portion and the mounting ring plate.

[0021] Preferably, an oil guide hopper is protruded outwardly from the support portion, an inlet of the oil guide hopper faces the medium oil, and an outlet of the oil guide hopper is communicated with the oil guide channel.

[0022] By adopting the above technical solution, when the support part rotates, the medium oil enters from the inlet of the oil guide bucket and enters the oil guide channel along the outlet of the oil guide bucket, which facilitates the medium oil to flow into the wedge-shaped space.

[0023] Preferably, the transmission assembly includes a driving gear, a steering gear and a driven gear, the driving gear is coaxially fixed on the outer wall of the inner shell, the driven gear is coaxially fixed on the inner wall of the guide cylinder, the steering gear is rotatably set on the outer shell, and is located between the driving gear and the driven gear, and is engaged with the driving gear and the driven gear.

[0024] By adopting the above technical solution, the inner shell drives the driving gear to rotate, the driving gear drives the steering gear to rotate, and the steering gear drives the driven gear to rotate, thereby realizing the opposite driving of the inner shell and the guide cylinder and improving the rotation stability of the inner shell and the guide cylinder.

[0025] Preferably, a sealing cover is provided on the feed port of the inner shell, and the sealing cover can seal the feed port. A pressure-resistant hose is connected to the sealing cover through a rotating joint so that the cylinder can swing. The pressure-resistant hose is connected to the vacuum generating system and the nitrogen supply system through a first three-way solenoid valve.

[0026] By adopting the above technical solution, the first three-way solenoid valve is used to connect the vacuum generation system and the nitrogen supply system to the inner cavity of the inner shell, thereby achieving vacuum and nitrogen filling operations in the material environment of the inner shell. The pressure-resistant hose connects the first three-way solenoid valve and allows the cylinder to swing.

[0027] Preferably, the mixer includes an oscillating cylinder and two support shafts, the two support shafts are respectively fixedly arranged on both sides of the oscillating cylinder and are rotatably connected to the frame, and the support shaft is provided with a gas channel connected to the inner cavity of the oscillating cylinder, and the gas channel is connected to the vacuum generating system and the nitrogen supply system through a second three-way solenoid valve.

[0028] By adopting the above technical solution, the second three-way solenoid valve is used to realize the vacuum generation system and the nitrogen supply system to respectively perform vacuum and nitrogen filling operations on the swing cylinder, and the swing cylinder is swung around the support shaft to realize the mixing operation of component A and component B in the swing cylinder.

[0029] Preferably, a control valve is provided on the discharge port of the inner shell, and the frame is provided with a collecting cylinder below the discharge port of the inner shell. The collecting cylinder is arranged above the swing cylinder and is connected to the swing cylinder through a feeding hose, so that the material in the collecting cylinder can enter the swing cylinder along the feeding hose.

[0030] By adopting the above technical solution, when component A in the first dryer and component B in the second dryer are dried, the corresponding control valves are opened, and components A and B enter the swing cylinder along the corresponding collecting cylinder and feeding hose to realize the feeding of components A and B. The setting of the feeding hose enables the swing cylinder to swing.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. When the medium oil enters the heating chamber from the oil inlet channel, the medium oil flows along the heating channel toward the bottom of the cylinder. When the medium oil passes through the baffle, the medium oil flows upward along the heating channel close to the inner shell side. The medium oil and the inner shell produce heat exchange, heating and drying the material in 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 can increase the degree of vertical disturbance of the medium oil, thereby effectively avoiding the accumulation of low-temperature and high-density medium oil at the bottom of the cylinder, making the medium oil dry the material more evenly and improving the production efficiency of the oxygen absorber;

[0033] 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 interferes with 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;

[0034] 3. When the guide cylinder rotates, the medium oil flows into the wedge-shaped space from the large end of the wedge-shaped space through the oil guide channel. The medium oil will be squeezed during the movement of the medium space, which will generate an upward thrust on the support part, which can offset the pressure of the guide cylinder on the mounting ring plate and reduce the friction between the support part and the mounting ring plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural diagram of an existing double-cone dryer.

[0036] Figure 2 This is a structural diagram of an integrated system for dry mixing and vacuum packaging of a sterilized oxygen absorbent according to an embodiment of the present application.

[0037] Figure 3 It is a structural diagram for showing the swing drive mechanism.

[0038] Figure 4 This is a top view of the dryer.

[0039] Figure 5 It is along Figure 4 Sectional view along line AA.

[0040] Figure 6 yes Figure 5 Enlarged view of part B in the middle.

[0041] Figure 7 It is a top view of the guide cylinder.

[0042] Figure 8 It is along Figure 7 Cross-sectional view along the CC line.

[0043] Figure 9 It is a top view of the mixer.

[0044] Figure 10 It is along Figure 9 Cross-sectional view along the mid-DD line.

[0045] Explanation of the accompanying symbols: 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 generating 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 Tank; 52. Nitrogen pipe; 6. Packaging machine; 71. Guide member; 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. Collecting cylinder; 83. Feed hose; 91. Inner shell; 92. Outer shell; 93. Rotating shaft; 94. Heating chamber; 95. Oil inlet channel; 96. Return channel; 10. Frame. DETAILED DESCRIPTION

[0046] The following is combined with Figure 2-10 This application is described in further detail.

[0047] The embodiments of the present application disclose an integrated system for dry mixing and vacuum packaging of a sterilizing oxygen absorbent.

[0048] Reference Figure 2A sterilizing oxygen absorbent dry mixing and vacuum packaging integrated 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 dries component A, and the second dryer 12 dries 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 create a vacuum environment in the first dryer 11, the second dryer 12, and the mixer 2. The purpose of providing a vacuum environment is to prevent components A and B from coming into contact with oxygen and causing oxidation. The oil bath circulation system 4 is connected to the first dryer 11 and the second dryer 12 to create a drying environment in the first dryer 11 and the second dryer 12. The medium oil in this embodiment 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 the first dryer 11, the second dryer 12, and the mixer 2. The purpose of introducing nitrogen is to relieve the vacuum environment in the cylinder 13 while preventing oxygen from entering the cylinder. Components A and B from the first and second dryers 11, 12 enter the mixer 2 for mixing. A packaging machine 6 is provided at the outlet of the mixer 2. The mixed materials in the mixer 2 fall into the packaging belt inside the packaging machine 6, which is then vacuumed and sealed with a hot melt plate.

[0049] Reference 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 through 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 passed 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 transports 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. The medium oil after heat exchange in the second dryer 12 flows back to the heating oil tank 42 through the oil return pipe 44, thereby completing the circulation of the medium oil.

[0050] When the oxygen absorber is mixed and dried, component A and component B are respectively introduced into the first dryer 11 and the second dryer 12, and 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 passes the medium oil through the heating chamber 133 to heat the materials in the first dryer 11 and the second dryer 12. Then the first dryer 11 heats and dries component A, and the second dryer 12 heats and dries component B. After the drying of components A and B is completed, nitrogen is introduced into the cylinder 13 through the nitrogen supply system 5 to release the vacuum state, and then the dried components A and B are introduced into the mixer 2 for mixing. The mixing process is still in a vacuum state. After mixing, the nitrogen supply system 5 introduces nitrogen into the mixer 2, and the materials mixed in the mixer 2 fall into the packaging belt in the packaging machine 6. Then the packaging belt is vacuumed, and the opening of the packaging belt is hot-melt sealed using a hot melt plate to complete the mixing, drying and vacuum packaging of the oxygen absorber.

[0051] Reference Figure 2 、 Figure 3 and Figure 4 Each dryer 1 includes a cylinder 13, a swing drive mechanism 14 and two swing shafts 15, and the cylinder 13 is a double-conical cylinder.

[0052] Reference Figure 4 、 Figure 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.

[0053] Reference Figure 5 、 Figure 6 Two swing shafts 15 are fixedly connected horizontally to opposite sides of the housing 132 and are rotatably connected to the frame 10. Each swing shaft 15 is provided with an oil inlet channel 136 and an oil return channel 137 that communicate with the heating chamber 133. The oil return channel 137 is located within the oil inlet channel 136. Each oil inlet channel 136 is connected to the oil inlet pipe 43 via a rotary joint, and each oil return channel 137 is connected to the oil return pipe 44 via a hose. The swing drive mechanism 14 includes a reciprocating motor 141 mounted on the frame 10. Each of the first dryer 11 and the second dryer 12 corresponds to a corresponding reciprocating motor 141. The reciprocating motor 141 drives the swing shaft 15 to swing through a gear assembly.

[0054] Reference Figure 5 、 Figure 6The outer shell 132 is provided with a guide member 71 in the heating chamber 133, and a heating channel 72 for the flow of medium oil is formed between the guide member 71 and the inner shell 131 and the outer shell 132. The heating channel 72 forms a deflection joint 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 deflection joint 73.

[0055] When the medium oil enters the heating chamber 133 from 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 deflector 73, the medium oil flows upward along the heating channel 72 close to the inner shell 131 side. The medium oil and the inner shell 131 produce heat exchange, heating and drying the material in the inner shell 131, and 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, so that the medium oil dries the material more evenly, thereby improving the production efficiency of the oxygen absorbent.

[0056] Reference Figure 5 The inner shell 131 is rotatably connected to the outer shell 132. The two ends of the outer shell 132 are bent toward their respective centers to form hems. The hems are slidably and sealedly connected to the corresponding feed pipe 134 and discharge pipe 135, so that the heating chamber 133 forms a sealed space. Both ends of the outer shell 132 are connected to the inner cylinder via tapered roller bearings, so that the outer shell 132 supports the inner shell 131 in the vertical direction. The outer shell 132 is provided with a rotation drive mechanism 74 that can drive 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. The output shaft of the drive motor 741 is connected to the feed pipe 134 via a mutually meshing gear set to drive the inner shell 131 to rotate. Using the drive mechanism to drive the inner shell 131 to rotate can increase the agitation of the material in the inner shell 131 and the uniformity of the heat exchange between the inner shell 131 and the medium oil, thereby accelerating the drying rate and drying uniformity of components A and B.

[0057] Reference Figure 3, each feed port of the feed pipe 134 is provided with a blocking cover 161, which is threadedly connected to the feed pipe 134, and the blocking cover 161 blocks the feed port. A pressure-resistant hose 162 is connected to the blocking cover 161, and the material of the pressure-resistant hose 162 includes but is not limited to one of polyurethane, nylon, and polytetrafluoroethylene. One end of the pressure-resistant hose 162 is connected to the blocking cover 161 through a rotating 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 staggered opening of the vacuum pipe 32, the nitrogen pipe 52 and the pressure-resistant hose 162 is controlled by the first three-way solenoid valve 163 to perform vacuum and nitrogen filling operations on the cavity in the inner shell 131. The pressure-resistant hose 162 is partially bent to adapt to the swing of the cylinder 13. The first three-way solenoid valve 163 is used to connect the vacuum generating system 3 and the nitrogen supply system 5 to the inner cavity of the inner shell 131, thereby achieving vacuum and nitrogen filling operations in the material environment of the inner shell 131. The pressure-resistant hose 162 connects the first three-way solenoid valve 163 and allows the cylinder 13 to swing.

[0058] Reference Figure 5 、 Figure 6 The guide member 71 in this embodiment includes a guide cylinder 711, which is arranged parallel to the inner shell 131 and the outer shell 132. The guide cylinder 711, the inner shell 131, and the outer shell 132 are all rotatable. The guide cylinder 711 and the outer shell 132 are connected by the mounting assembly 75, and the inner shell 131 is connected to the guide cylinder 711 by the transmission assembly 77, driving the guide cylinder 711 to rotate in the opposite direction.

[0059] Reference Figure 5 、 Figure 6 The mounting assembly 75 in this embodiment includes a mounting ring plate 751, which is fixedly mounted on the inner sidewall of the housing 132 and located above the oil inlet passage 136. A support portion 752 is formed on the guide cylinder 711, which is capable of overlapping the mounting ring plate 751. The support portion 752 and the mounting ring plate 751 are slidably engaged, forming a certain gap between the housing 132. The overlap of the support portion 752 on the mounting ring plate 751 provides support for the guide cylinder 711 within the heating chamber 133, thereby improving the stability of the guide cylinder 711 during rotation.

[0060] Reference Figure 5 、 Figure 6An oil guide pipe 753, which communicates with the oil return passage 137, is fixedly connected to the swing shaft 15. The oil guide pipe 753 passes through the mounting ring plate 751 and connects to the end of the heating passage 72. The guide cylinder 711 has multiple through-holes 754 above the support portion 752, allowing the medium oil to flow back to the oil return passage 137 along the oil guide pipe 753. The medium oil flows along the heating passage 72 to the top of the mounting ring plate 751, separating the oil inlet and return, forming a single flow path during the flow of the medium oil. This effectively prevents leakage between the inlet and return oil, which could cause the temperature of the inlet oil to drop, reduces heat loss in the medium oil, and improves the heat exchange efficiency between the medium oil and the inner shell 131.

[0061] Reference Figure 5 、 Figure 6 A lubrication ring groove 755 is provided on the mounting ring plate 751 , and a sealing ring strip 756 that can cooperate with the lubrication ring groove 755 is provided on the support portion 752 . The sealing ring strip 756 and the support portion 752 are integrally formed.

[0062] Reference Figure 7 、 Figure 8 The sealing ring strip 756 is provided with a plurality of inclined guide surfaces 761 on the side facing the bottom wall of the lubrication ring groove 755. A wedge-shaped space 762 is formed between each inclined guide surface 761 and the bottom wall of the lubrication ring groove 755. The plurality of wedge-shaped spaces 762 are evenly arranged along the circumference of the sealing ring strip 756. The large end of each wedge-shaped space 762 faces the rotation direction of the support portion 752. The support portion 752 is provided with an oil guide channel 763 connected to the large end of the wedge-shaped space 762. The oil guide channel 763 corresponds one-to-one to the wedge-shaped space 762. Each oil guide channel 763 extends through the top wall of the support portion 752. An oil guide hopper 764 protrudes from the top wall of the support portion 752, corresponding one to each guide channel. Each oil guide hopper 764 is a rectangular box-shaped structure with two adjacent openings on each side, forming an inlet for 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 hopper 764 into the wedge-shaped space 762 and out through the gap between the sealing ring strip 756 and the lubrication ring groove 755. The medium oil enters through the inlet of the oil guide hopper 764 and flows through the outlet of the oil guide hopper 764 into the oil guide channel 763, facilitating the flow of the medium oil into the wedge-shaped space 762.

[0063] The cooperation between the sealing ring strip 756 and the lubricating ring groove 755 enhances the sealing between the mounting ring plate 751 and the support portion 752. When the guide cylinder 711 rotates, the dielectric oil flows from the large end of the wedge-shaped space 762 into the wedge-shaped space 762 through the oil guide channel 763. During the movement of the wedge-shaped space 762, the dielectric oil is squeezed, generating an upward thrust on the support portion 752, which offsets the pressure exerted by the guide cylinder 711 on the mounting ring plate 751 and reduces the friction between the support portion 752 and the mounting ring plate 751.

[0064] Reference Figure 5 、 Figure 6 The transmission assembly 77 in this embodiment includes a driving gear 771, a steering gear 772, and a driven gear 773. The driving gear 771 is coaxially fixed to the outer wall of the inner housing 131, and the driven gear 773 is coaxially fixed to the inner wall of the guide cylinder 711. The steering gear 772 is connected to the outer housing 132 via a gear shaft 774. The gear shaft 774 is fixedly connected to the outer housing 132, and the steering gear 772 is rotationally connected to the gear shaft 774. The steering gear 772 is located between the driving gear 771 and the driven gear 773 and meshes with the driving gear 771 and the driven gear 773. When the inner housing 131 drives the driving gear 771 to rotate, the driving gear 771 drives the steering gear 772 to rotate, and the steering gear 772 drives the driven gear 773 to rotate, thereby driving the inner housing 131 and the guide cylinder 711 in opposite directions, thereby improving the rotational stability of the inner housing 131 and the guide cylinder 711.

[0065] Reference Figure 2 A control valve 81 is provided on the discharge port of the discharge pipe 135 at the bottom of each inner shell 131. The control valve 81 includes but is not limited to a butterfly valve 23, a ball valve, a gate valve, or an orifice valve. The frame 10 is provided with a collecting cylinder 82 below the discharge port of the discharge pipe 135 of each inner shell 131, and the collecting cylinder 82 is arranged above the swing cylinder 21. When the cylinder 13 stops swinging, the discharge pipe 135 is aligned with the collecting cylinder 82. A feeding hose 83 is installed at the bottom of each collecting cylinder 82. 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 movement of the mixer 2.

[0066] Reference Figure 9 、 Figure 10The mixer 2 in this embodiment includes an oscillating cylinder 21 and two support shafts 22. The oscillating cylinder 21 is a double-conical structure. The two support shafts 22 are relatively fixed on both sides of the oscillating 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 oscillating cylinder 21 is blocked by a sealing plate. The ends of the two feeding hoses 83 are fixed to the sealing plate and connected to the inner cavity of the oscillating cylinder 21, so that the A component and the B component materials can fall into the oscillating cylinder 21 along the feeding hose 83. Each feeding hose 83 is provided with a ball valve at one end close to the oscillating cylinder 21, and the feeding hose 83 is controlled by the ball valve.

[0067] Reference Figure 2 、 Figure 9 and Figure 10 A butterfly valve 23 is installed at the bottom outlet of the oscillating drum 21 to control the discharge of the material within the oscillating drum 21. A gas passage 24 is provided on the support shaft 22, communicating with the inner cavity of the oscillating drum 21. This gas passage 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 passage 24 via a rotary joint. The second three-way solenoid valve 25 is used to vacuum and nitrogen-fill the oscillating drum 21, respectively. The oscillation of the oscillating drum 21 around the support shaft 22 allows the mixing of components A and B within the oscillating drum 21.

[0068] When component A in the first dryer 11 and component B in the second dryer 12 are dried, the corresponding control valve 81 is opened, and component A and component B enter the swing cylinder 21 along the corresponding collecting cylinder 82 and feeding hose 83 to realize the feeding of component A and component B. The setting of the feeding hose 83 enables the swing cylinder 21 to swing.

[0069] The implementation principle of the integrated system for drying, mixing and vacuum packaging of sterilized oxygen absorbents in the embodiment of the present application is as follows: when mixing, drying and packaging the oxygen absorbents, 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 evacuates the inner cavities of the first dryer 11 and the second dryer 12, and then the oil bath circulation system 4 introduces the medium oil into the heating chamber 133, and then the reciprocating rotating motor 141 drives the cylinder 13 to swing, and the driving motor 741 drives the inner shell 131 to rotate, thereby heating the materials in the first dryer 11 and the second dryer 12, and then the first dryer 11 and the second dryer 12 are heated. The machine 11 heats and dries component A, and the second dryer 12 heats and dries component B. After component A and component B are dried, nitrogen is introduced into the cylinder 13 through the nitrogen supply system 5 to release the vacuum state, and then the dried component A and component B are introduced into the swing cylinder 21 through the collecting cylinder 82 and the feeding hose 83 for mixing. The mixing process is still in a vacuum state. After mixing, the nitrogen supply system 5 introduces nitrogen into the mixer 2, and the material mixed by the mixer 2 falls into the packaging belt in the packaging machine 6, and then the packaging belt is vacuumed, and then the hot melt plate is used to hot-melt seal the opening of the packaging belt to complete the mixing, drying and vacuum packaging of the oxygen absorber.

[0070] When the medium oil enters the heating chamber 133 from 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 deflector 73, the medium oil flows upward along the heating channel 72 close to the inner shell 131 side. The medium oil and the inner shell 131 produce heat exchange, heating and drying the material in the inner shell 131, and 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, so that the medium oil dries the material more evenly, thereby improving the production efficiency of the oxygen absorbent.

[0071] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sterilizing oxygen absorbent dry mixing and vacuum packaging integrated system, characterized by: The invention comprises two groups 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 groups 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) so as to enable the first dryer (11), the second dryer (12) and the mixer (2) to be mixed. A vacuum environment is generated in the mixer (2); the oil bath circulation system (4) is connected to the first dryer (11) and the second dryer (12) so as to generate a drying environment in 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) so as to introduce nitrogen into the first dryer (11), the second dryer (12) and the mixer (2); a packaging machine (6) is provided at the bottom of the mixer (2); the packaging machine (6) is capable of vacuum packaging the output of the mixer (2); The dryer (1) comprises a cylinder (13), a swing drive mechanism (14) and two swing shafts (15); the two swing shafts (15) are relatively fixedly connected to both sides of the cylinder (13) along 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 chamber for holding materials is formed in the inner shell (131), the two swing shafts (15) are fixedly connected to the outer shell (132), an oil inlet channel (136) and an oil return channel (137) communicating with the oil bath circulation system (4) are provided on the swing shaft (15), and the outer shell (132) is provided with a heating chamber (133) and a chamber for holding materials. 32) A guide member (71) is provided in the heating chamber (133), and a heating channel (72) for the flow of medium oil is formed between the guide member (71) and the inner shell (131) and the outer shell (132). The heating channel (72) forms a deflection joint (73) at the bottom of the inner shell (131), and 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 deflection joint (73).

2. The integrated system for dry mixing and vacuum packaging of sterilized oxygen absorbent 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 driving mechanism (74) capable of driving the inner shell (131) to rotate; The guide member (71) includes a guide cylinder (711), the guide cylinder (711) is arranged parallel to the inner shell (131) and the outer shell (132), and the guide cylinder (711) and the inner shell (131) and the outer shell (132) are all rotatably arranged. The guide cylinder (711) and the outer shell (132) are connected via a mounting assembly (75), and the inner shell (131) is connected to the guide cylinder (711) via a transmission assembly (77) so as to be able to drive the guide cylinder (711) to rotate in the opposite direction.

3. The integrated system for dry mixing and vacuum packaging of sterilized oxygen absorbent according to claim 2, characterized in that: The mounting assembly (75) includes a mounting ring plate (751), the mounting ring plate (751) being fixedly arranged on the inner side wall of the housing (132), the guide cylinder (711) being formed with a support portion (752) capable of overlapping the mounting ring plate (751), the support portion (752) being slidably fitted with the mounting ring plate (751), so as to enable the medium oil to form a one-way flow in the heating channel (72).

4. The integrated system for dry mixing and vacuum packaging of sterilized oxygen absorbent according to claim 3, characterized in that: An oil guide pipe (753) connected to the oil return channel (137) is provided on 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), 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 dry mixing and vacuum packaging of sterilized oxygen absorbent according to claim 3, characterized in that: The mounting ring plate (751) is provided with a lubricating ring groove (755), and the support portion (752) is provided with a sealing ring strip (756) capable of being arranged in cooperation with the lubricating ring groove (755). The sealing ring strip (756) is provided with a plurality of inclined guide surfaces (761) on a side facing the bottom wall of the lubricating ring groove (755), and a wedge-shaped space (762) is formed between each of the inclined guide surfaces (761) and the bottom wall of the lubricating ring groove (755). The large end of each wedge-shaped space (762) faces the rotation direction of the support portion (752), and the support portion (752) is provided with an oil guide channel (763) connected to the large end of the wedge-shaped space (762). The oil guide channel (763) penetrates the top wall of the support portion (752) so that medium oil can flow into the wedge-shaped space (762).

6. The integrated system for dry mixing and vacuum packaging of sterilized oxygen absorbent according to claim 5, characterized in that: An oil guide hopper (764) is protruding outward from the support portion (752), the inlet of the oil guide hopper (764) faces the medium oil, and the outlet of the oil guide hopper (764) is in communication with the oil guide channel (763).

7. The integrated system for dry mixing and vacuum packaging of sterilized oxygen absorbent according to claim 2, characterized in that: The transmission assembly (77) includes a driving gear (771), a steering gear (772), and a driven gear (773); the driving gear (771) is coaxially fixedly arranged on the outer side wall of the inner shell (131); the driven gear (773) is coaxially fixedly arranged on the inner side wall of the guide cylinder (711); the steering gear (772) is rotatably arranged on the outer shell (132), and is located between the driving gear (771) and the driven gear (773), and is meshed with the driving gear (771) and the driven gear (773).

8. The integrated system for dry mixing and vacuum packaging of sterilized oxygen absorbent according to claim 2, characterized in that: A blocking cover plate (161) is provided on the feed port of the inner shell (131), and the blocking cover plate (161) can block the feed port. A pressure-resistant hose (162) is connected to the blocking cover plate (161) via 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) via a first three-way solenoid valve (163).

9. The integrated system for dry mixing and vacuum packaging of sterilized oxygen absorbent according to claim 2, characterized in that: The mixer (2) comprises an oscillating cylinder (21) and two supporting shafts (22). The two supporting shafts (22) are fixedly arranged on both sides of the oscillating cylinder (21) and are rotatably connected to the frame (10). The supporting shafts (22) are provided with a gas channel (24) communicating with the inner cavity of the oscillating cylinder (21). 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).

10. The integrated system for dry mixing and vacuum packaging of sterilized oxygen absorbent according to claim 9, characterized in that: A control valve (81) is provided on the discharge port of the inner shell (131), and a collecting cylinder (82) is provided on the frame (10) below the discharge port of the inner shell (131). The collecting cylinder (82) is arranged above the swing cylinder (21) and is connected to the swing cylinder (21) through a feeding hose (83), so that the material in the collecting cylinder (82) can enter the swing cylinder (21) along the feeding hose (83).

Images