Powder oxygen-free inert gas environment filling line and filling method

Abstract

The invention provides a powder oxygen-free inert gas environment filling line and a filling method.The filling line comprises a conveying chain, a transfer bin, a working bin, a buffering bin, a filling device, a vacuumizing device, an inert gas inflation device and a cap screwing device, and the conveying chain sequentially penetrates through the transfer bin, the working bin and the buffering bin; a filling opening of the filling device and the cap screwing end of the cap screwing device are both located in the working bin, sealing doors are arranged at the end, away from the working bin, of the transfer bin, the position between the transfer bin and the working bin, the position between the working bin and the buffering bin and the end, away from the working bin, of the buffering bin correspondingly, and the vacuumizing device communicates with the transfer bin, the working bin and the buffering bin in sequence through a first pipeline. The inert gas charging device is sequentially communicated with the transfer bin, the working bin and the surge bin through a second pipeline, oxygen detection sensors and gas pressure sensors are arranged in the transfer bin, the working bin and the surge bin, and the filling line can ensure that the filling process is in an oxygen-free environment, so that the quality of powder products is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of powder filling, and in particular to a powder oxygen-free inert gas environment filling line. Background Art

[0002] Powder anaerobic filling technology is a technology for filling powdered materials in an anaerobic or low-oxygen environment. With the continuous development of science and technology, the application of powder anaerobic filling technology in various fields is becoming more and more extensive. In the food industry, this technology can be used to protect food powder from the influence of oxygen and extend the shelf life of food; in the pharmaceutical industry, this technology can be used to protect the active ingredients of pharmaceutical powders and improve the stability and efficacy of pharmaceuticals; in the chemical industry, this technology can be used to prevent powder from reacting with oxygen and improve product safety and quality. However, during the powder filling process, the anaerobic warehouse often needs to open and close the door. During the process of opening and closing the door, external oxygen or other gases can easily enter the anaerobic warehouse and remain in the anaerobic warehouse, causing oxygen or other gases to penetrate into the packaging and affect the anaerobic environment of the product. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention proposes a powder oxygen-free inert gas environment filling line and filling method, which can ensure that the filling process is in an oxygen-free environment, thereby ensuring the quality of the powder product.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A powder oxygen-free inert gas environment filling line comprises a conveyor chain, a transfer bin, a working bin, a buffer bin, a filling device, a vacuum pumping device, an inert gas charging device and a capping device for screwing bottle caps onto packaging bottles. The conveyor chain passes through the transfer bin, the working bin and the buffer bin in sequence, the transfer bin, the working bin and the buffer bin are connected in sequence, the filling port of the filling device is located in the working bin, sealing doors are provided at one end of the transfer bin away from the working bin, between the transfer bin and the working bin, between the working bin and the buffer bin, and at one end of the buffer bin away from the working bin, the vacuum pumping device is connected with the transfer bin, the working bin and the buffer bin in sequence through a first pipeline, the inert gas charging device is connected with the transfer bin, the working bin and the buffer bin in sequence through a second pipeline, oxygen detection sensors and gas pressure sensors are provided in the transfer bin, the working bin and the buffer bin, and the capping end of the capping device is located in the working bin and behind the filling port of the filling device.

[0006] Preferably, a humidity sensor is provided in the transfer bin, the working bin and / or the buffer bin.

[0007] Preferably, the conveying chain includes a first conveying section arranged at an end of the transfer bin away from the working bin, a second conveying section arranged in the transfer bin, a third conveying section arranged in the working bin, a fourth conveying section arranged in the buffer bin, and a fifth conveying section arranged at an end of the buffer bin away from the working bin;

[0008] A plurality of trays for placing packaging bottles are slidably arranged on the conveyor chain, and a plug hole is arranged on one side of the tray;

[0009] A first transfer cylinder is provided on one side of the first conveying section, the output end of the first transfer cylinder is connected to a first connecting rod, the first connecting rod is parallel to the first conveying section, a plurality of first plugging rod cylinders are provided on the first connecting rod, the output end of the first plugging rod cylinder is provided with a first plugging rod that can be inserted into the plug hole, the axial direction of the first plugging rod is perpendicular to the length direction of the first connecting rod, after the first plugging rod is inserted into the plug hole of the pallet, the first transfer cylinder transfers the pallet from the first conveying section to the second conveying section by moving the first connecting rod and the first plugging rod cylinder;

[0010] A second transfer cylinder is provided on one side of the third conveying section and at one end close to the transfer warehouse, the output end of the second transfer cylinder is connected to the second connecting rod, the second connecting rod is parallel to the third conveying section, a plurality of second plug-in cylinders are provided on the second connecting rod, the output end of the second plug-in cylinder is provided with a second plug-in rod that can be inserted into the socket, the axial direction of the second plug-in rod is perpendicular to the length direction of the second connecting rod, after the second plug-in rod is inserted into the socket of the pallet, the second transfer cylinder transfers the pallet from the second conveying section to the third conveying section by moving the second connecting rod and the second plug-in cylinder;

[0011] A third transfer cylinder is provided on one side of the third conveying section and at one end close to the buffer bin, the output end of the third transfer cylinder is connected to a third connecting rod, the third connecting rod is parallel to the third conveying section, a plurality of third plugging cylinders are provided on the third connecting rod, the output end of the third plugging cylinder is provided with a third plugging rod that can be inserted into the plug hole, the axial direction of the third plugging rod is perpendicular to the length direction of the third connecting rod, after the third plugging rod is inserted into the plug hole of the pallet, the third transfer cylinder transfers the pallet from the third conveying section to the fourth conveying section by moving the third connecting rod and the third plugging cylinder;

[0012] A fourth transfer cylinder is provided on one side of the fifth conveying section, and the output end of the fourth transfer cylinder is connected to the fourth connecting rod, which is parallel to the fifth conveying section. A plurality of fourth plug-in rod cylinders are provided on the fourth connecting rod, and a fourth plug-in rod which can be inserted into the socket is provided at the output end of the fourth plug-in rod cylinder, and the axial direction of the fourth plug-in rod is perpendicular to the length direction of the fourth connecting rod. After the fourth plug-in rod is inserted into the socket of the pallet, the fourth transfer cylinder transfers the pallet from the fourth conveying section to the fifth conveying section by moving the fourth connecting rod and the fourth plug-in rod cylinder.

[0013] Preferably, a socket is also provided on the other side of the tray;

[0014] A fifth transfer cylinder is provided on one side of the third conveying section opposite to the second transfer cylinder and at one end close to the transfer warehouse. The output end of the fifth transfer cylinder is connected to the fifth connecting rod. The fifth connecting rod is parallel to the third conveying section. A plurality of fifth plug-in rod cylinders are provided on the fifth connecting rod. A fifth plug-in rod which can be inserted into the socket is provided at the output end of the fifth plug-in rod cylinder. The axial direction of the fifth plug-in rod is perpendicular to the length direction of the fifth connecting rod. After the fifth plug-in rod is inserted into the socket of the pallet, the fifth transfer cylinder transfers the pallets entering the third conveying section one by one to the bottom of the filling port of the filling device by moving the fifth connecting rod and the fifth plug-in rod cylinder.

[0015] Preferably, a sixth transfer cylinder is provided on one side of the middle part of the third conveying section, the output end of the sixth transfer cylinder is connected to the sixth connecting rod, the sixth connecting rod is parallel to the third conveying section, a plurality of sixth plug-in rod cylinders are provided on the sixth connecting rod, the output end of the sixth plug-in rod cylinder is provided with a sixth plug-in rod which can be inserted into the socket, the axial direction of the sixth plug-in rod is perpendicular to the length direction of the sixth connecting rod, after the sixth plug-in rod is inserted into the socket of the pallet, the sixth transfer cylinder moves the sixth connecting rod and the sixth plug-in rod cylinder to transfer the pallets entering the third conveying section one by one to the bottom of the capping end of the capping device.

[0016] Preferably, the capping device includes a conveyor belt, a cover feeding plate, a cover feeding cylinder, a lifting cylinder, a fixed plate, a servo motor and a rotating sleeve for capping, the output end of the conveyor belt is located on one side of the third conveying section, the cover feeding plate is horizontally arranged on the same horizontal plane as the output end of the conveyor belt and is arranged on the output end of the cover feeding cylinder so that the cover feeding plate can approach and move away from the output end of the conveyor belt, the lifting cylinder is arranged above the third conveying section, the fixed plate is arranged on the output end of the lifting cylinder, the servo motor is installed on the fixed plate, and the rotating sleeve is arranged on the output shaft of the servo motor. After the cover feeding plate is driven by the cover feeding cylinder to receive the bottle cap from the output end of the conveyor belt and send it to the top of the third conveying section, the lifting cylinder is used to drive the servo motor to move downward until the bottle cap enters the rotating sleeve, and then the cover feeding plate is reset while the lifting cylinder continues to drive the servo motor to move downward, and cooperates with the servo motor to drive the rotating sleeve to perform the capping operation.

[0017] Preferably, a groove adapted to the bottom of the packaging bottle is provided in the middle of the tray.

[0018] Preferably, it further comprises a desiccant feeding device for feeding desiccant into the packaging bottle, and the feeding outlet of the desiccant feeding device is located in the working bin and behind the filling port of the filling device.

[0019] Preferably, the desiccant dispensing device includes an unwinding shaft for driving the desiccant coil to rotate, a plurality of guide rollers and a cutter for guiding the desiccant coil. One end of the desiccant coil is wound on the unwinding shaft, and the other end is output vertically toward the bottle mouth of the packaging bottle after passing through a plurality of guide rollers. The cutter is arranged on one side of the output end of the desiccant coil and its moving direction is perpendicular to the output direction of the desiccant coil.

[0020] The present invention also provides a powder filling method, using any of the above powder oxygen-free inert gas environment filling lines, comprising the following steps:

[0021] S1: Place the packaging bottle at the entrance end of the conveyor chain, open the sealed door at the end of the transfer warehouse away from the working warehouse, and keep the other sealed doors closed. After the packaging bottle is transferred to the transfer warehouse through the conveyor chain, close the sealed door at the end of the transfer warehouse away from the working warehouse, and then use the vacuum device to exhaust the gas in the transfer warehouse, and use the inert gas filling device to inject inert gas into the transfer warehouse until the oxygen detection sensor and gas pressure sensor in the transfer warehouse reach the set value;

[0022] S2: Open the sealed door between the transfer warehouse and the working warehouse, keep the other sealed doors closed, transfer the packaging bottles to the transfer warehouse through the conveyor chain, and then close the sealed door between the transfer warehouse and the working warehouse. Then, use the vacuum device to exhaust the gas in the working warehouse, and use the inert gas filling device to inject inert gas into the working warehouse until the oxygen detection sensor and gas pressure sensor in the working warehouse reach the set value;

[0023] S3: moving the packaging bottle to below the filling port of the filling device through the conveyor chain, starting the filling device to fill the powder into the packaging bottle, and then continuing to move the packaging bottle to below the capping end of the capping device through the conveyor chain, starting the capping device to screw the bottle cap onto the packaging bottle;

[0024] S4: exhaust the gas in the buffer bin by using a vacuum device, and inject inert gas into the buffer bin by using an inert gas charging device, until the oxygen detection sensor and the gas pressure sensor in the buffer bin reach the set value, then open the sealed door between the working bin and the buffer bin, and keep the other sealed doors closed. After the packaging bottles are transferred to the buffer bin by the conveyor chain, close the sealed door between the working bin and the buffer bin;

[0025] S5: Open the sealing door at the end of the buffer bin away from the working bin, and keep the other sealing doors closed. After the packaging bottles are transferred out of the buffer bin through the conveyor chain, close the sealing door at the end of the buffer bin away from the working bin.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) When using the powder oxygen-free inert gas environment filling line for filling, the packaging bottles are first transferred to the transfer warehouse through the conveyor chain for vacuuming and filling with inert gas, so that the packaging bottles are in an oxygen-free inert gas environment in the transfer warehouse. Then the packaging bottles enter the working warehouse for secondary vacuuming and filling with inert gas, further ensuring that the packaging bottles are in an oxygen-free inert gas environment during filling, thereby ensuring the quality of filling and preventing the external gas remaining in the transfer warehouse from entering the working warehouse;

[0028] (2) After the filling is completed, the buffer bin is first vacuumed and filled with inert gas for the third time, and then the packaging bottle is transferred to the buffer bin through the conveyor chain. After the sealing door between the working bin and the buffer bin is closed, the sealing door at the end of the buffer bin away from the working bin is opened, and the packaging bottle is moved out of the buffer bin. This can prevent the external gas remaining in the buffer bin from entering the working bin, thereby avoiding affecting the subsequent powder filling in the working bin;

[0029] (3) After the packaging bottle is vacuumed twice and filled with inert gas in the transfer warehouse and the working warehouse, the powder is filled in the working warehouse and the cap is screwed after the filling is completed to seal the packaging bottle to ensure the quality of the powder in the packaging bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front view of the present invention;

[0031] Figure 2 It is a three-dimensional structural schematic diagram of the oxygen-free chamber, the vacuum pumping device and the inert gas charging device in the present invention;

[0032] Figure 3 It is a three-dimensional diagram of the internal structure of the present invention;

[0033] Figure 4 It is a top view of the internal structure of the present invention;

[0034] Figure 5 It is a schematic diagram of the three-dimensional structure of the first conveying section in the present invention;

[0035] Figure 6 It is a schematic diagram of the three-dimensional structure of the front section of the third conveying section in the present invention;

[0036] Figure 7 It is a top view of the rear section of the third conveying section in the present invention;

[0037] Figure 8 It is a schematic diagram of the three-dimensional structure of the front section of the fifth conveying section in the present invention;

[0038] Fig. 9 It is a schematic diagram of the three-dimensional structure of the filling device in the present invention;

[0039] Fig.10 It is a schematic diagram of the three-dimensional structure of the third conveying section, the capping device and the desiccant dispensing device in the present invention;

[0040] Fig.11 It is a top view of the cap screwing device in the present invention.

[0041] Figure ID:

[0042] 1- conveyor chain; 11- first conveying section; 111- first transfer cylinder; 112- first connecting rod; 113- first plugging cylinder; 114- first plugging rod; 12- second conveying section; 13- third conveying section; 131- second transfer cylinder; 132- second connecting rod; 133- second plugging cylinder; 134- second plugging rod; 135- third transfer cylinder; 136- third connecting rod; 137- third plugging cylinder; 138- third plugging rod; 139- fifth transfer cylinder Cylinder; 1310-fifth connecting rod; 1311-fifth plugging rod cylinder; 1312-fifth plugging rod; 1313-sixth transfer cylinder; 1314-sixth connecting rod; 1315-sixth plugging rod cylinder; 1316-sixth plugging rod; 14-fourth conveying section; 15-fifth conveying section; 151-fourth transfer cylinder; 152-fourth connecting rod; 153-fourth plugging rod cylinder; 154-fourth plugging rod; 16-tray; 161-jack; 162-groove; 17-roller;

[0043] 2- oxygen-free warehouse; 21- transfer warehouse; 22- working warehouse; 23- buffer warehouse;

[0044] 3-filling device; 31-hopper; 311-discharge port; 32-screw sleeve; 321-feed port; 33-screw; 34-drive motor; 35-powder collecting tank; 36-collecting bottle; 37-electronic scale; 38-support frame;

[0045] 4-vacuum extraction device; 41-first pipeline;

[0046] 5- inert gas charging device; 51- second pipeline;

[0047] 6-capping device; 61-conveyor belt; 62-capping plate; 63-capping cylinder; 64-lifting cylinder; 65-fixed plate; 66-servo motor; 67-rotating sleeve;

[0048] 7-desiccant delivery device; 71-unwinding shaft; 72-guide roller; 73-cutter;

[0049] 8-Sealed door;

[0050] 9-Packaging bottles. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] See also Figures 1 to 3 A powder oxygen-free inert gas environment filling line comprises a conveyor chain 1, a transfer bin 21, a working bin 22, a buffer bin 23, a filling device 3, a vacuum pumping device 4, an inert gas charging device 5 and a capping device 6 for screwing a bottle cap onto a packaging bottle 9. The conveyor chain 1 sequentially passes through the transfer bin 21, the working bin 22 and the buffer bin 23, the transfer bin 21, the working bin 22 and the buffer bin 23 are sequentially connected, the filling port of the filling device 3 is located in the working bin 22, the transfer bin 21 is away from the end of the working bin 22, between the transfer bin 21 and the working bin 22, between the working bin 22 and the buffer bin 23, and the buffer bin 23 is away from the working bin A sealing door 8 is provided at one end of the working bin 22, the transfer bin 21, the working bin 22 and the buffer bin 23 are all anaerobic bins 2, the vacuum pumping device 4 is connected with the transfer bin 21, the working bin 22 and the buffer bin 23 in sequence through a first pipe 41, the inert gas charging device 5 is connected with the transfer bin 21, the working bin 22 and the buffer bin 23 in sequence through a second pipe 51, the transfer bin 21, the working bin 22 and the buffer bin 23 are all provided with an oxygen detection sensor and a gas pressure sensor (the oxygen detection sensor and the gas pressure sensor are not shown in the figure), and the capping end of the capping device 6 is located in the working bin 22 and behind the filling port of the filling device 3.

[0054] During filling, the packaging bottle 9 is first transferred to the transfer warehouse 21 by the conveyor chain 1 for vacuuming and filling with inert gas, so that the packaging bottle 9 is in an oxygen-free inert gas environment in the transfer warehouse 21, and then the packaging bottle 9 enters the working warehouse 22 for secondary vacuuming and filling with inert gas, further ensuring that the packaging bottle 9 is in an oxygen-free inert gas environment during filling, thereby ensuring the quality of filling and preventing the external gas remaining in the transfer warehouse 21 from entering the working warehouse 22;

[0055] After the filling is completed, the buffer bin 23 is first vacuumed and filled with inert gas for the third time, and then the packaging bottle 9 is transferred to the buffer bin 23 through the conveyor chain 1. After the sealing door 8 between the working bin 22 and the buffer bin 23 is closed, the sealing door 8 at the end of the buffer bin 23 away from the working bin 22 is opened, and the packaging bottle 9 is moved out of the buffer bin 23, which can prevent the external gas remaining in the buffer bin 23 from entering the working bin 22, thereby avoiding affecting the subsequent powder filling in the working bin 22;

[0056] After the packaging bottle 9 is vacuumed twice and filled with inert gas in the transfer bin 21 and the working bin 22 in turn, the powder is filled in the working bin 22 and the cap is screwed after the filling is completed to seal the packaging bottle, thereby ensuring the quality of the powder in the packaging bottle 9.

[0057] Preferably, the three connecting ports of the first pipeline 41 connecting with the transfer bin 21, the working bin 22 and the buffer bin 23, and the three connecting ports of the second pipeline 51 connecting with the transfer bin 21, the working bin 22 and the buffer bin 23 can be respectively provided with on-off valves to individually control the on-off of the first pipeline 41 and the transfer bin 21, the working bin 22 and the buffer bin 23, as well as the on-off of the second pipeline 51 and the transfer bin 21, the working bin 22 and the buffer bin 23, so as to individually control the vacuuming process and the inert gas filling process of the transfer bin 21, the working bin 22 and the buffer bin 23.

[0058] Preferably, a humidity sensor is provided in the working bin 22 (humidity sensor is not shown in the figure). By providing the humidity sensor, the humidity level in the working bin 22 can be monitored in real time to ensure that the humidity in the bin is kept within an appropriate range, and humidity abnormalities can be detected in time to avoid damage to the powder due to moisture. In addition, a humidity sensor can also be provided in the transfer bin 21 and / or the buffer bin 23 to detect the humidity in the transfer bin 21 and / or the buffer bin 23 in real time. In this embodiment, the humidity requirement of the three anaerobic bins is ≤20%, and the humidity requirement can be adjusted according to actual conditions.

[0059] For details, see Figures 3 to 8 The conveyor chain 1 includes a first conveying section 11 disposed at an end of the transfer bin 21 away from the working bin 22, a second conveying section 12 disposed in the transfer bin 21, a third conveying section 13 disposed in the working bin 22, a fourth conveying section 14 disposed in the buffer bin 23, and a fifth conveying section 15 disposed at an end of the buffer bin 23 away from the working bin 22. The first conveying section 11, the second conveying section 12, the third conveying section 13, the fourth conveying section 14 and the fifth conveying section 15 are arranged in sequence along the traveling direction of the packaging bottles 9;

[0060] A plurality of trays 16 for placing packaging bottles 9 are slidably arranged on the conveyor chain 1. The packaging bottles 9 are placed on the trays 16 and transported along the conveyor chain 1. A plug hole 161 is arranged on one side surface of the tray 16.

[0061] A first transfer cylinder 111 is provided on one side of the first conveying section 11, and an output end of the first transfer cylinder 111 is connected to a first connecting rod 112, and the first connecting rod 112 is parallel to the first conveying section 11. A plurality of first plugging rod cylinders 113 are provided on the first connecting rod 112, and a first plugging rod 114 which can be inserted into the insertion hole 161 is provided at the output end of the first plugging rod cylinder 113, and an axial direction of the first plugging rod 114 is perpendicular to a length direction of the first connecting rod 112. After the first plugging rod 114 is inserted into the insertion hole 161 of the tray 16, the first transfer cylinder 111 moves the first connecting rod 112 and The first rod-inserting cylinder 113 transfers the tray 16 from the first conveying section 11 to the second conveying section 12; when it is necessary to transfer the packaging bottle 9 from the first conveying section 11 to the second conveying section 12, that is, to transfer the packaging bottle 9 from the outside to the transfer warehouse 21, the first rod-inserting cylinder 113 first drives the first rod 114 to insert the first rod 114 into the insertion hole 161 of the tray 16, and then the first transfer cylinder 111 drives the first connecting rod 112 to move the first connecting rod 112 toward the second conveying section 12. At this time, the first connecting rod 112 drives the first rod-inserting cylinder 113 , the first insertion rod 114, the tray 16 on the first conveying section 11 and the packaging bottle 9 on the tray 16 move toward the direction of the second conveying section 12, so as to transfer the packaging bottle 9 to the second conveying section 12, and then the first insertion rod 114 is driven by the first insertion rod cylinder 113 to make the first insertion rod 114 leave the insertion hole 161 of the tray 16, and then the first transfer cylinder 111 drives the first connecting rod 112 so that the first connecting rod 112 drives the first insertion rod cylinder 113 and the first insertion rod 114 to reset, so that the first connecting rod 112 returns to one side of the first conveying section 11 to wait for the next Transfer; In this embodiment, three first rod insertion cylinders 113 are provided on the first connecting rod 112. The first transfer cylinder 111 can simultaneously transfer three packaging bottles 9 on the first conveying section 11 to the second conveying section 12 with a single movement. Of course, the number of the first rod insertion cylinders 113 can be increased or decreased as needed, and there is no restriction here; the first transfer cylinder 111 is arranged on one side of the first conveying section 11 instead of on one side of the second conveying section 12, so that the length of the second conveying section 12 can be shortened, thereby shortening the length of the transfer warehouse 21, and saving more space;

[0062] A second transfer cylinder 131 is provided on one side of the third conveying section 13 and at one end close to the transfer warehouse 21. The output end of the second transfer cylinder 131 is connected to a second connecting rod 132. The second connecting rod 132 is parallel to the third conveying section 13. A plurality of second plug-in cylinders 133 are provided on the second connecting rod 132. A second plug-in rod 134 which can be inserted into the insertion hole 161 is provided at the output end of the second plug-in rod cylinder 133. The axial direction of the second plug-in rod 134 is perpendicular to the length direction of the second connecting rod 132. After the second plug-in rod 134 is inserted into the insertion hole 161 of the tray 16, the second transfer cylinder 131 is connected to the second connecting rod 132. The tray 16 is transferred from the second conveying section 12 to the third conveying section 13 by moving the second connecting rod 132 and the second rod-inserting cylinder 133; when it is necessary to transfer the packaging bottle 9 from the second conveying section 12 to the third conveying section 13, that is, to transfer the packaging bottle 9 from the transfer bin 21 to the working bin 22, the second connecting rod 132 is first driven by the second transfer cylinder 131 to move the second connecting rod 132 toward the second conveying section 12 until the second insertion rod 134 is aligned with the insertion hole 161 of the tray 16, and then the second insertion rod 134 is driven by the second insertion rod cylinder 133 to insert the second insertion rod 134 into the working bin 22. The second transfer cylinder 131 then drives the second connecting rod 132 to move the second connecting rod 132 toward the third conveying section 13. At this time, the second connecting rod 132 drives the second plugging rod cylinder 133, the second plugging rod 134, the tray 16 on the second conveying section 12, and the packaging bottle 9 on the tray 16 to move toward the third conveying section 13, thereby transferring the packaging bottle 9 to the third conveying section 13. Finally, the second plugging rod cylinder 133 drives the second plugging rod 134 to leave the plugging hole 161 of the tray 16, and waits for the next Transfer once; in this embodiment, three second rod-inserting cylinders 133 are provided on the second connecting rod 132, and the second transfer cylinder 131 can simultaneously transfer three packaging bottles 9 on the second conveying section 12 to the third conveying section 13 with a single movement. Of course, the number of second rod-inserting cylinders 133 can be increased or decreased as needed, and there is no restriction here; the second transfer cylinder 131 is arranged on one side of the third conveying section 13 instead of on one side of the second conveying section 12, so that the length of the second conveying section 12 can be shortened, thereby shortening the length of the transfer warehouse 21, and saving more space;

[0063] A third transfer cylinder 135 is provided on one side of the third conveying section 13 and at one end close to the buffer bin 23. The output end of the third transfer cylinder 135 is connected to a third connecting rod 136. The third connecting rod 136 is parallel to the third conveying section 13. A plurality of third plug-in cylinders 137 are provided on the third connecting rod 136. A third plug-in rod 138 which can be inserted into the socket 161 is provided at the output end of the third plug-in rod cylinder 137. The axial direction of the third plug-in rod 138 is perpendicular to the length direction of the third connecting rod 136. After the third plug-in rod 138 is inserted into the socket 161 of the tray 16, the third transfer cylinder 135 is connected to the third connecting rod 136. The cylinder 135 transfers the tray 16 from the third conveying section 13 to the fourth conveying section 14 by moving the third connecting rod 136 and the third inserting rod cylinder 137. When it is necessary to transfer the packaging bottle 9 from the third conveying section 13 to the fourth conveying section 14, the packaging bottle 9 is transferred from the working bin 22 to the buffer bin 23, and the third inserting rod 138 is first driven by the third inserting rod cylinder 137 to insert the third inserting rod 138 into the insertion hole 161 of the tray 16, and then the third transfer cylinder 135 drives the third connecting rod 136 to move the third connecting rod 136 to the direction of the fourth conveying section 14. The third connecting rod 136 drives the third plugging rod cylinder 137, the third plugging rod 138, the tray 16 on the third conveying section 13 and the packaging bottle 9 on the tray 16 to move toward the fourth conveying section 14, so as to transfer the packaging bottle 9 to the fourth conveying section 14. Then, the third plugging rod 138 is driven by the third plugging rod cylinder 137 to make the third plugging rod 138 leave the insertion hole 161 of the tray 16, and then the third transfer cylinder 135 drives the third connecting rod 136 to make the third connecting rod 136 drive the third plugging rod cylinder 137 and the third plugging rod 138 to return to their original position. In this embodiment, three third rod-inserting cylinders 137 are provided on the third connecting rod 136. The third rod-inserting cylinders 137 can simultaneously transfer three packaging bottles 9 on the third conveying section 13 to the fourth conveying section 14 with a single movement. Of course, the number of third rod-inserting cylinders 137 can be increased or decreased as needed, and is not limited here. The third transfer cylinder 135 is arranged on one side of the third conveying section 13 instead of on one side of the fourth conveying section 14, so that the length of the fourth conveying section 14 can be shortened, thereby shortening the length of the buffer bin 23, and saving more space.

[0064] A fourth transfer cylinder 151 is provided on one side of the fifth conveying section 15, and the output end of the fourth transfer cylinder 151 is connected to the fourth connecting rod 152, and the fourth connecting rod 152 is parallel to the fifth conveying section 15. A plurality of fourth plug-in rod cylinders 153 are provided on the fourth connecting rod 152, and a fourth plug-in rod 154 which can be inserted into the socket 161 is provided at the output end of the fourth plug-in rod cylinder 153, and the axial direction of the fourth plug-in rod 154 is perpendicular to the length direction of the fourth connecting rod 152. After the fourth plug-in rod 154 is inserted into the socket 161 of the tray 16, the fourth transfer cylinder 151 transfers the tray 16 from the fourth conveying section 14 to the fifth conveying section 15 by moving the fourth connecting rod 152 and the fourth plug-in rod cylinder 153. When it is necessary to transfer the packaging bottle 9 from the fourth conveying section 14 to the fifth conveying section 15, that is, to transfer the packaging bottle 9 from the buffer bin 23 to the outside, firstly, the fourth transfer cylinder 151 drives the fourth connecting rod 152 to move the fourth connecting rod 152 toward the fourth conveying section 14 until the fourth insertion rod 154 is aligned with the insertion hole 161 of the insertion tray 16, and then the fourth insertion rod cylinder 153 drives the fourth insertion rod 154 to insert the fourth insertion rod 154 into the insertion hole 161 of the tray 16, and then the fourth transfer cylinder 151 drives the fourth connecting rod 152 to move the fourth connecting rod 152 toward the fifth conveying section 15. At this time, the fourth connecting rod 152 drives the fourth insertion rod cylinder 153, the fourth insertion rod 154, the tray 16 on the fourth conveying section 14 and the packaging bottle 9 on the tray 16 to the fifth conveying section 15. , thereby transferring the packaging bottle 9 to the fifth conveying section 15, and finally driving the fourth insertion rod 154 through the fourth insertion rod cylinder 153 to make the fourth insertion rod 154 leave the insertion hole 161 of the tray 16, waiting for the next transfer; in this embodiment, three fourth insertion rod cylinders 153 are provided on the fourth connecting rod 152, and a single movement of the fourth transfer cylinder 151 can simultaneously transfer the three packaging bottles 9 on the fourth conveying section 14 to the fifth conveying section 15. Of course, the number of fourth insertion rod cylinders 153 can be increased or decreased as needed, and there is no restriction here; setting the fourth transfer cylinder 151 on one side of the fifth conveying section 15 instead of on one side of the fourth conveying section 14 can shorten the length of the fourth conveying section 14, thereby shortening the length of the buffer bin 23, and saving more space.

[0065] Preferably, see Figure 5 and Figure 6 A plurality of rollers 17 are arranged on the conveyor chain 1 along the traveling direction of the packaging bottles 9 . The rollers 17 allow the tray 16 to slide, thereby reducing the resistance to the transfer of the packaging bottles 9 and facilitating the transfer of the packaging bottles 9 .

[0066] Preferably, see Figure 3 , Figure 4 and Figure 6 , the other side of the tray 16 is also provided with a plug hole 161;

[0067] A fifth transfer cylinder 139 is provided on one side of the third conveying section 13 opposite to the second transfer cylinder 131 and at one end close to the transfer warehouse 21. The output end of the fifth transfer cylinder 139 is connected to the fifth connecting rod 1310. The fifth connecting rod 1310 is parallel to the third conveying section 13. A plurality of fifth insertion rod cylinders 1311 are provided on the fifth connecting rod 1310. A fifth insertion rod 1312 which can be inserted into the socket 161 is provided at the output end of the fifth insertion rod cylinder 1311. The axial direction of the fifth insertion rod 1312 is perpendicular to the length direction of the fifth connecting rod 1310. After the fifth insertion rod 1312 is inserted into the socket 161 of the tray 16, the fifth transfer cylinder 139 transfers the trays 16 entering the third conveying section 13 one by one to the bottom of the filling port of the filling device 3 by moving the fifth connecting rod 1310 and the fifth insertion rod cylinder 1311. When filling is required, the fifth insertion rod 1312 is first driven by the fifth insertion rod cylinder 1311 to insert the fifth insertion rod 1312 into the insertion hole 161 of the tray 16, and then the fifth transfer cylinder 139 drives the fifth connecting rod 1310 to move the fifth connecting rod 1310 toward the filling port of the filling device 3. At this time, the fifth connecting rod 1310 drives the fifth insertion rod cylinder 1311, the fifth insertion rod 1312, the tray 16 on the third conveying section 13 and the packaging bottle 9 on the tray 16 to move toward the filling port of the filling device 3, thereby transferring the packaging bottle 9 to the bottom of the filling port of the filling device 3, and then the fifth insertion rod 1312 is driven by the fifth insertion rod cylinder 1311 to make the fifth insertion rod 1312 leave the insertion hole 161 of the tray 16, and then the fifth insertion rod cylinder 1311 drives the fifth connecting rod 1310 so that the fifth connecting rod 1310 drives the fifth insertion rod cylinder 1311 and the fifth insertion rod The rod 1312 is reset, so that the fifth connecting rod 1310 returns to the initial position and waits for the next transfer. By controlling the moving distance of the fifth connecting rod 1310, the packaging bottles 9 can be transferred one by one to the bottom of the filling port of the filling device 3, and the packaging bottles 9 that have completed filling can be moved out from under the filling port of the filling device 3 one by one. The distance of a single movement is equal to the length of a pallet 16. In addition, the pallet 16 that has been moved out from under the filling port of the filling device 3 will be pushed by the rear pallet 16 and move along the third conveying section 13 in the direction of the third conveying section 13 away from the transfer warehouse 21; in this embodiment, three fifth insertion rod cylinders 1311 are provided on the fifth connecting rod 1310, and the fifth transfer cylinder 139 can transfer three packaging bottles 9 on the third conveying section 13 at the same time with a single movement. Of course, the number of fifth insertion rod cylinders 1311 can be increased or decreased as needed, and there is no restriction here.

[0068] like Fig. 9The filling device 3 of this embodiment includes a hopper 31, a screw sleeve 32, a screw rod 33 and a driving motor 34. The hopper 31 is located at one end of the screw sleeve 32. A discharge port 311 is provided at the bottom of the hopper 31. The discharge port 311 is the filling port of the filling device 3. The screw sleeve 32 is sleeved outside the screw rod 33 and one end of the screw rod 33 extends into the hopper 31. A feed port 321 is provided at the top of the screw sleeve 32. Powder can be added to the screw sleeve 32 through the feed port 321. One end of the screw rod 33 away from the hopper 31 is connected to the output end of the driving motor 34. The driving motor 34 drives the screw rod 33 to rotate in the screw sleeve 32. The screw rod 33 drives the powder in the screw sleeve 32 to move to the hopper 31. The powder in the hopper 31 is filled into the packaging bottle 9 below it through the discharge port 311.

[0069] Preferably, see Fig. 9 In order to prevent the powder from scattering and accumulating on the third conveying section 13 due to the small bottle mouth of the packaging bottle 9, which affects the transfer of the tray 16, a powder collecting groove 35 is provided just below the filling port of the filling device 3 and at the bottom of the third conveying section 13. The powder collecting groove 35 is inclined downward, and the lower end of the powder collecting groove 35 is open. A collecting bottle 36 is provided below the lower end of the powder collecting groove 35, and the collecting bottle 36 is used to collect the powder that slides down from the powder collecting groove 35.

[0070] Preferably, see Fig. 9 An electronic scale 37 is provided just below the filling port of the filling device 3 and at the bottom of the third conveying section 13. In order not to affect the powder collecting tank 35, the electronic scale 37 is installed at the bottom of the third conveying section 13 through a support frame 38. The upper end of the support frame 38 is installed on the side of the third conveying section 13. The electronic scale 37 weighs the total weight of the packaging bottle 9, the powder in the packaging bottle 9, the tray 16 and the support frame 38. The electronic scale 37 detects the total weight in real time, and the filling is terminated when the total weight reaches the target weight. The packaging bottle 9, the tray 16 and the support frame 38 are almost unchanged, and the weight of the filling powder can be adjusted by adjusting the total weight.

[0071] Preferably, see Figure 3 , Figure 4 and Figure 7A sixth transfer cylinder 1313 is provided on one side of the middle part of the third conveying section 13, and the output end of the sixth transfer cylinder 1313 is connected to the sixth connecting rod 1314, the sixth connecting rod 1314 is parallel to the third conveying section 13, and a plurality of sixth plug-in rod cylinders 1315 are provided on the sixth connecting rod 1314, and a sixth plug-in rod 1316 which can be inserted into the socket 161 is provided at the output end of the sixth plug-in rod cylinder 1315, and the axial direction of the sixth plug-in rod 1316 is perpendicular to the length direction of the sixth connecting rod 1314. After the sixth plug-in rod 1316 is inserted into the socket 161 of the tray 16, the sixth transfer cylinder 1313 transfers the trays 16 entering the third conveying section 13 one by one to the bottom of the capping end of the capping device 6 by moving the sixth connecting rod 1314 and the sixth plug-in rod cylinder 1315. When it is necessary to screw the cap, firstly, the sixth connecting rod 1314 is driven by the sixth transfer cylinder 1313 to move the sixth connecting rod 1314 toward the filling device 3 until the sixth insertion rod 1316 is aligned with the insertion hole 161 of the tray 16, and then the sixth insertion rod 131 is driven by the sixth insertion rod cylinder 1315 to insert the sixth insertion rod 131 into the insertion hole 161 of the tray 16, and then the sixth transfer cylinder 1313 drives the sixth connecting rod 1314 to move the sixth connecting rod 1314 toward the cap screwing device 6. At this time, the sixth connecting rod 1314 drives the sixth insertion rod cylinder 1315, the sixth insertion rod 131, the tray 16 on the third conveying section 13 and the packaging bottle 9 on the tray 16 to move toward the cap screwing device 6, thereby transferring the packaging bottle 9 to the bottom of the cap screwing end of the cap screwing device 6, and finally the sixth insertion rod 131 is driven by the sixth insertion rod cylinder 1315 to make the sixth insertion rod 131 leave the insertion hole 16 of the tray 16 1, and then the sixth transfer cylinder 1313 drives the sixth connecting rod 1314 to return to the initial position to wait for the next transfer; by controlling the moving distance of the sixth connecting rod 1314, the packaging bottles 9 can be transferred one by one to the bottom of the capping end of the capping device 6, and at the same time, the packaging bottles 9 that have completed the capping can be moved out from the bottom of the capping end of the capping device 6 one by one, and the distance of a single movement is equal to the length of a tray 16. In addition, the tray 16 that has been moved out from the bottom of the capping end of the capping device 6 will be pushed by the rear tray 16 and move along the third conveying section 13 in the direction of the third conveying section 13 away from the transfer warehouse 21; in this embodiment, three sixth insertion rod cylinders 1315 are provided on the sixth connecting rod 1314, and the sixth insertion rod cylinder 1315 can transfer three packaging bottles 9 on the third conveying section 13 at the same time with a single movement. Of course, the number of the sixth insertion rod cylinders 1315 can be increased or decreased as needed, and there is no limitation here.

[0072] For details, see Figure 3 , Fig.10 and Fig.11The cover screwing device 6 includes a conveyor belt 61, a cover feeding plate 62, a cover feeding cylinder 63, a lifting cylinder 64, a fixing plate 65, a servo motor 66 and a rotating sleeve 67 for screwing the cover. The output end of the conveyor belt 61 is located on one side of the third conveying section 13. The cover feeding plate 62 is horizontally arranged on the same horizontal plane as the output end of the conveyor belt 61 and is arranged on the output end of the cover feeding cylinder 63 so that the cover feeding plate 62 can approach and move away from the output end of the conveyor belt 61. The lifting cylinder 64 is arranged above the third conveying section 13, and the fixing plate 65 is arranged on the lifting cylinder 64. At the output end of the lowering cylinder 64, the servo motor 66 is installed on the fixed plate 65, and the rotating sleeve 67 is set on the output shaft of the servo motor 66. After the cover feeding plate 62 is driven by the cover feeding cylinder 63 to receive the bottle caps from the output end of the conveyor belt 61 and send them to the top of the third conveying section 13, the lifting cylinder 64 is used to drive the servo motor 66 to move downward until the bottle caps enter the rotating sleeve 67. Subsequently, the cover feeding plate 62 is reset while the lifting cylinder 64 continues to drive the servo motor 66 to move downward, and cooperates with the servo motor 66 to drive the rotating sleeve 67 to perform the capping operation. First, the bottle cap is transported to the cover delivery plate 62 through the conveyor belt 61, and the cover delivery plate 62 transports the bottle cap to the bottom of the rotating sleeve 67 through the cover delivery cylinder 63, and then the lifting cylinder 64 drives the servo motor 66 to move downward until the bottle cap enters the rotating sleeve 67, then the cover delivery plate 62 is reset and the lifting cylinder 64 continues to drive the servo motor 66 to move downward, and cooperates with the servo motor 66 to drive the rotating sleeve 67 to perform the cap screwing operation, so that the bottle cap is screwed into the bottle mouth of the packaging bottle 9, and the filled packaging bottle 9 is sealed.

[0073] Preferably, Figure 5 A groove 162 adapted to the bottom of the packaging bottle 9 is provided in the middle of the tray 16, so that the packaging bottle 9 can be stably placed on the tray 16, thereby preventing the packaging bottle 9 from tipping over.

[0074] Preferably, see Figure 3 The powder oxygen-free inert gas environment filling line also includes a desiccant feeding device 7 for feeding desiccant into the packaging bottle 9. The feeding outlet of the desiccant feeding device 7 is located in the working bin 22 and behind the filling port of the filling device 3. In the working bin 22, the powder is first filled into the packaging bottle 9 by the filling device 3, and then the desiccant feeding device 7 feeds desiccant into the packaging bottle 9, and finally the packaging bottle 9 is sealed by the capping device 6. When the sixth transfer cylinder 1313 moves the sixth connecting rod 1314 and the sixth insertion rod cylinder 1315 to transfer the trays 16 entering the third conveying section 13 one by one to the bottom of the capping end of the capping device 6, it will pass under the feeding outlet of the desiccant feeding device 7. At this time, the desiccant feeding device 7 starts and feeds the desiccant into the packaging bottle 9.

[0075] For details, see Figure 3 and Fig.10The desiccant delivery device 7 includes an unwinding shaft 71 for driving the desiccant coil to rotate, a plurality of guide rollers 72 for guiding the desiccant coil, and a cutter 73. One end of the desiccant coil is wound on the unwinding shaft 71, and the other end is output vertically toward the bottle mouth of the packaging bottle 9 after passing through the plurality of guide rollers 72. The cutter 73 is arranged on one side of the output end of the desiccant coil and its moving direction is perpendicular to the output direction of the desiccant coil. The desiccant coil is transported to the bottle mouth of the packaging bottle 9 through the cooperation of the unwinding shaft 71 and the plurality of guide rollers 72, and the desiccant coil is cut by the cutter 73. After the desiccant coil is cut, a single package of desiccant is obtained, and the desiccant automatically falls into the packaging bottle 9.

[0076] The present invention also provides a powder filling method, using the above-mentioned powder oxygen-free inert gas environment filling line, comprising the following steps:

[0077] S1: Place the packaging bottle 9 at the entrance end of the conveyor chain 1, open the sealing door 8 at the end of the transfer bin 21 away from the working bin 22, and keep the other sealing doors 8 closed. After transferring the packaging bottle 9 to the transfer bin 21 through the conveyor chain 1, close the sealing door 8 at the end of the transfer bin 21 away from the working bin 22, and then use the vacuum device 4 to exhaust the gas in the transfer bin 21, and use the inert gas charging device 5 to inject inert gas into the transfer bin 21 until the oxygen detection sensor and the gas pressure sensor in the transfer bin 21 reach the set value;

[0078] S2: Open the sealing door 8 between the transfer warehouse 21 and the working warehouse 22, and keep the other sealing doors 8 closed. After the packaging bottles 9 are transferred to the transfer warehouse 21 by the conveyor chain 1, the sealing door 8 between the transfer warehouse 21 and the working warehouse 22 is closed. Then, the gas in the working warehouse 22 is exhausted by the vacuum device 4, and the inert gas filling device 5 is used to inject inert gas into the working warehouse 22 until the oxygen detection sensor and the gas pressure sensor in the working warehouse 22 reach the set value;

[0079] S3: the packaging bottle 9 is moved to below the filling port of the filling device 3 by the conveyor chain 1, the filling device 3 is started to fill the powder into the packaging bottle 9, and then the packaging bottle 9 is continued to be moved to below the capping end of the capping device 6 by the conveyor chain 1, and the capping device 6 is started to screw the bottle cap onto the packaging bottle 9;

[0080] S4: the gas in the buffer bin 23 is exhausted by the vacuum device 4, and the inert gas charging device 5 is used to inject inert gas into the buffer bin 23 until the oxygen detection sensor and the gas pressure sensor in the buffer bin 23 reach the set value, and then the sealing door 8 between the working bin 22 and the buffer bin 23 is opened, and the other sealing doors 8 remain closed, and the packaging bottles 9 are transferred to the buffer bin 23 by the conveyor chain 1, and then the sealing door 8 between the working bin 22 and the buffer bin 23 is closed;

[0081] S5: Open the sealing door 8 at one end of the buffer bin 23 away from the working bin 22, and keep the other sealing doors 8 closed. After the packaging bottle 9 is transferred out of the buffer bin 23 by the conveyor chain 1, the sealing door 8 at one end of the buffer bin 23 away from the working bin 22 is closed.

[0082] It should be noted that the setting values ​​of the oxygen detection sensors and gas pressure sensors in the transfer bin 21, the working bin 22 and the buffer bin 2 can be set according to the requirements of powder filling.

[0083] When a desiccant dosing device 7 is provided on the powder oxygen-free inert gas environment filling line, step S3 is: moving the packaging bottle 9 to below the filling port of the filling device 3 by the conveyor chain 1, starting the filling device 3 to fill the powder into the packaging bottle 9, and then continuing to move the packaging bottle 9 to below the feeding outlet of the desiccant dosing device 7 by the conveyor chain 1, starting the desiccant dosing device 7 to put the desiccant into the packaging bottle 9, and then continuing to move the packaging bottle 9 to below the capping end of the capping device 6 by the conveyor chain 1, and starting the capping device 6 to screw the bottle cap onto the packaging bottle 9.

[0084] In this embodiment, there are three packaging bottles 9 in each batch. Each time, the same batch of packaging bottles 9 is transferred from the entrance end of the conveyor chain 1 to the transfer warehouse 21 at the same time, and then the same batch of packaging bottles 9 is transferred from the transfer warehouse 21 to the working warehouse 22 at the same time. After powder filling in the working warehouse 22, the same batch of packaging bottles 9 is transferred from the working warehouse 22 to the buffer warehouse 23 at the same time, and finally the same batch of packaging bottles 9 is transferred out of the buffer warehouse 23.

[0085] After the previous batch of packaging bottles 9 is transferred from the transfer warehouse 21 to the working warehouse 22, the sealing door 8 at the end of the transfer warehouse 21 away from the working warehouse 22 is opened to transfer the next batch of packaging bottles 9 into the transfer warehouse 21; after the previous batch of packaging bottles 9 is transferred from the working warehouse 22 to the buffer warehouse 23, the sealing door 8 between the transfer warehouse 21 and the working warehouse 22 is opened to transfer the next batch of packaging bottles 9 into the working warehouse 22; after the previous batch of packaging bottles 9 is moved out of the buffer warehouse 23, the sealing door 8 between the working warehouse 22 and the buffer warehouse 23 is opened to transfer the next batch of packaging bottles 9 into the buffer warehouse 23. That is, after the previous batch of packaging bottles 9 is moved out, the next batch of packaging bottles 9 enters, which can ensure continuous filling, shorten the waiting time, and thus improve the filling efficiency.

[0086] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A powder oxygen-free inert gas environment filling line, characterized in that: The invention comprises a conveying chain, a transfer warehouse, a working warehouse, a buffer warehouse, a filling device, a vacuum pumping device, an inert gas charging device and a capping device for screwing bottle caps onto packaging bottles, the conveying chain passes through the transfer warehouse, the working warehouse and the buffer warehouse in sequence, the transfer warehouse, the working warehouse and the buffer warehouse are connected in sequence, the filling port of the filling device is located in the working warehouse, a sealing door is provided at one end of the transfer warehouse away from the working warehouse, between the transfer warehouse and the working warehouse, between the working warehouse and the buffer warehouse, and at one end of the buffer warehouse away from the working warehouse, the vacuum pumping device is communicated with the transfer warehouse, the working warehouse and the buffer warehouse in sequence through a first pipeline, the inert gas charging device is communicated with the transfer warehouse, the working warehouse and the buffer warehouse in sequence through a second pipeline, an oxygen detection sensor and a gas pressure sensor are provided in the transfer warehouse, the working warehouse and the buffer warehouse, the capping end of the capping device is located in the working warehouse and behind the filling port of the filling device.

2. The powder oxygen-free inert gas environment filling line according to claim 1, characterized in that: A humidity sensor is provided in the transfer bin, the working bin and / or the buffer bin.

3. The powder oxygen-free inert gas environment filling line according to claim 1, characterized in that: The conveyor chain includes a first conveying section arranged at an end of the transfer bin away from the working bin, a second conveying section arranged in the transfer bin, a third conveying section arranged in the working bin, a fourth conveying section arranged in the buffer bin, and a fifth conveying section arranged at an end of the buffer bin away from the working bin; A plurality of trays for placing packaging bottles are slidably arranged on the conveyor chain, and a plug hole is arranged on one side surface of the tray; A first transfer cylinder is provided at one side of the first conveying section, an output end of the first transfer cylinder is connected to a first connecting rod, the first connecting rod is parallel to the first conveying section, a plurality of first rod-inserting cylinders are provided on the first connecting rod, a first rod-inserting cylinder which can be inserted into the insertion hole is provided at the output end of the first rod-inserting cylinder, the axial direction of the first rod-inserting cylinder is perpendicular to the length direction of the first connecting rod, after the first rod-inserting cylinder is inserted into the insertion hole of the pallet, the first transfer cylinder transfers the pallet from the first conveying section to the second conveying section by moving the first connecting rod and the first rod-inserting cylinder; A second transfer cylinder is provided at one side of the third conveying section and at one end close to the transfer warehouse, the output end of the second transfer cylinder is connected to a second connecting rod, the second connecting rod is parallel to the third conveying section, a plurality of second rod insertion cylinders are provided on the second connecting rod, the output end of the second rod insertion cylinder is provided with a second rod that can be inserted into the insertion hole, the axial direction of the second rod is perpendicular to the length direction of the second connecting rod, after the second rod is inserted into the insertion hole of the pallet, the second transfer cylinder transfers the pallet from the second conveying section to the third conveying section by moving the second connecting rod and the second rod insertion cylinder; A third transfer cylinder is provided on one side of the third conveying section and at one end close to the buffer bin, the output end of the third transfer cylinder is connected to a third connecting rod, the third connecting rod is parallel to the third conveying section, a plurality of third rod insertion cylinders are provided on the third connecting rod, the output end of the third rod insertion cylinder is provided with a third rod that can be inserted into the insertion hole, the axial direction of the third rod is perpendicular to the length direction of the third connecting rod, after the third rod is inserted into the insertion hole of the pallet, the third transfer cylinder transfers the pallet from the third conveying section to the fourth conveying section by moving the third connecting rod and the third rod insertion cylinder; A fourth transfer cylinder is provided on one side of the fifth conveying section, and the output end of the fourth transfer cylinder is connected to a fourth connecting rod, and the fourth connecting rod is parallel to the fifth conveying section. A plurality of fourth plugging rod cylinders are provided on the fourth connecting rod, and a fourth plugging rod which can be inserted into the insertion hole is provided at the output end of the fourth plugging rod cylinder, and the axial direction of the fourth plugging rod is perpendicular to the length direction of the fourth connecting rod. After the fourth plugging rod is inserted into the insertion hole of the pallet, the fourth transfer cylinder transfers the pallet from the fourth conveying section to the fifth conveying section by moving the fourth connecting rod and the fourth plugging rod cylinder.

4. The powder oxygen-free inert gas environment filling line according to claim 3, characterized in that: The other side of the tray is also provided with a plug hole; A fifth transfer cylinder is provided on one side of the third conveying section opposite to the second transfer cylinder and at one end close to the transfer warehouse, the output end of the fifth transfer cylinder is connected to a fifth connecting rod, the fifth connecting rod is parallel to the third conveying section, a plurality of fifth plug-in rod cylinders are provided on the fifth connecting rod, a fifth plug-in rod which can be inserted into the insertion hole is provided at the output end of the fifth plug-in rod cylinder, the axial direction of the fifth plug-in rod is perpendicular to the length direction of the fifth connecting rod, after the fifth plug-in rod is inserted into the insertion hole of the pallet, the fifth transfer cylinder transfers the pallets entering the third conveying section to below the filling port of the filling device one by one by moving the fifth connecting rod and the fifth plug-in rod cylinder.

5. The powder oxygen-free inert gas environment filling line according to claim 4, characterized in that: A sixth transfer cylinder is provided on one side of the middle part of the third conveying section, and the output end of the sixth transfer cylinder is connected to a sixth connecting rod, and the sixth connecting rod is parallel to the third conveying section. A plurality of sixth plug-in rod cylinders are provided on the sixth connecting rod, and a sixth plug-in rod which can be inserted into the insertion hole is provided at the output end of the sixth plug-in rod cylinder, and the axial direction of the sixth plug-in rod is perpendicular to the length direction of the sixth connecting rod. After the sixth plug-in rod is inserted into the insertion hole of the pallet, the sixth transfer cylinder transfers the pallets entering the third conveying section one by one to the bottom of the capping end of the capping device by moving the sixth connecting rod and the sixth plug-in rod cylinder.

6. The powder oxygen-free inert gas environment filling line according to claim 1, characterized in that: The cap screwing device comprises a conveyor belt, a cover feeding plate, a cover feeding cylinder, a lifting cylinder, a fixed plate, a servo motor and a rotating sleeve for screwing the cap, the output end of the conveyor belt is located at one side of the third conveying section, the cover feeding plate is horizontally arranged on the same horizontal plane as the output end of the conveyor belt and is arranged on the output end of the cover feeding cylinder so that the cover feeding plate can approach and move away from the output end of the conveyor belt, the lifting cylinder is arranged above the third conveying section, the fixed plate is arranged on the output end of the lifting cylinder, the servo motor is mounted on the fixed plate, and the rotating sleeve is arranged on the output shaft of the servo motor, after the cover feeding plate is driven by the cover feeding cylinder to receive the bottle cap from the output end of the conveyor belt and send it to the top of the third conveying section, the lifting cylinder is used to drive the servo motor to move downward until the bottle cap enters the rotating sleeve, and then the cover feeding plate is reset while the lifting cylinder continues to drive the servo motor to move downward, and cooperates with the servo motor to drive the rotating sleeve to perform the cap screwing operation.

7. The powder oxygen-free inert gas environment filling line according to claim 3, characterized in that: The middle part of the tray is provided with a groove adapted to the bottom of the packaging bottle.

8. The powder oxygen-free inert gas environment filling line according to claim 1, characterized in that: It also includes a desiccant feeding device for feeding desiccant into the packaging bottle, and the feeding outlet of the desiccant feeding device is located in the working bin and behind the filling port of the filling device.

9. The powder oxygen-free inert gas environment filling line according to claim 6, characterized in that: The desiccant dispensing device includes an unwinding shaft for driving the desiccant coil to rotate, a plurality of guide rollers and a cutter for guiding the desiccant coil. One end of the desiccant coil is wound on the unwinding shaft, and the other end is output vertically toward the bottle mouth of the packaging bottle after passing through the plurality of guide rollers. The cutter is arranged on one side of the output end of the desiccant coil and its moving direction is perpendicular to the output direction of the desiccant coil.

10. A powder filling method, characterized in that: The powder oxygen-free inert gas environment filling line according to any one of claims 1 to 9 comprises the following steps: S1: placing the packaging bottle at the entrance end of the conveyor chain, opening the sealing door of the transfer warehouse at one end away from the working warehouse, and keeping the other sealing doors closed, transferring the packaging bottle to the transfer warehouse through the conveyor chain, and then closing the sealing door of the transfer warehouse at one end away from the working warehouse, and then using the vacuum device to exhaust the gas in the transfer warehouse, and at the same time using the inert gas charging device to inject inert gas into the transfer warehouse, until the oxygen detection sensor and the gas pressure sensor in the transfer warehouse reach the set value; S2: opening the sealed door between the transfer warehouse and the working warehouse, keeping the other sealed doors closed, transferring the packaging bottles to the transfer warehouse through the conveyor chain, and then closing the sealed door between the transfer warehouse and the working warehouse, then exhausting the gas in the working warehouse by the vacuum device, and injecting inert gas into the working warehouse by the inert gas charging device, until the oxygen detection sensor and the gas pressure sensor in the working warehouse reach the set value; S3: moving the packaging bottle to below the filling port of the filling device via the conveying chain, starting the filling device to fill the powder into the packaging bottle, and then continuing to move the packaging bottle to below the capping end of the capping device via the conveying chain, starting the capping device to screw the bottle cap onto the packaging bottle; S4: exhausting the gas in the buffer bin by using the vacuum device, and injecting inert gas into the buffer bin by using the inert gas charging device, until the oxygen detection sensor and the gas pressure sensor in the buffer bin reach the set value, then opening the sealing door between the working bin and the buffer bin, keeping the other sealing doors closed, transferring the packaging bottle to the buffer bin by the conveyor chain, and then closing the sealing door between the working bin and the buffer bin; S5: opening the sealing door at the end of the buffer bin away from the working bin, and keeping the other sealing doors closed; and closing the sealing door at the end of the buffer bin away from the working bin after the packaging bottle is transferred out of the buffer bin by the conveying chain.

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