Anaerobic conveying device

Abstract

The utility model provides an anaerobic conveying device which comprises a conveying chain, a transfer bin, a working bin, a surge bin, a vacuumizer and an inert gas inflator, the conveying chain sequentially penetrates through the transfer bin, the working bin and the surge bin, and the transfer bin, the working bin and the surge bin are sequentially connected. Sealing doors are arranged at one end, far away from the working bin, of the transit bin, between the transit bin and the working bin, between the working bin and the buffering bin and one end, far away from the working bin, of the buffering bin, and the vacuumizer is sequentially communicated with the transit bin, the working bin and the buffering bin through a first pipeline; the inert gas inflator 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 device can ensure that the conveying process in the oxygen-free bin is in an oxygen-free environment, so that the product quality is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder filling technical field, concretely relates to a kind of oxygen-free conveying device. BACKGROUND

[0002] Powder oxygen-free filling technology is a kind of filling technology to powder material in oxygen-free or low-oxygen environment, with the continuous development of science and technology, powder oxygen-free filling technology is more and more widely used in various fields.In food industry, the technology can be used to protect food powder from the influence of oxygen, prolong the shelf life of food;In pharmaceutical industry, the technology can be used to protect the active ingredients of drug powder, improve the stability and efficacy of drug;In chemical industry, the technology can be used to prevent powder from reacting with oxygen, improve the safety and quality of product.However, in the conveying process of the to-be-filled packaging bottle, the oxygen-free bin often needs to open and close the door, and the external oxygen or other gas is easy to enter the oxygen-free bin during the opening and closing process, and is left in the oxygen-free bin, causing oxygen or other gas to penetrate into the packaging, affecting the oxygen-free environment of product. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides an oxygen-free conveying device, which can ensure that the conveying process in the oxygen-free bin is in an oxygen-free environment, thereby ensuring the quality of product.

[0004] The technical scheme of the utility model is as follows:

[0005] An oxygen-free conveying device, comprising a conveying chain, a transfer bin, a working bin, a buffer bin, a vacuum pump and an inert gas charger, the conveying 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, a sealing door is arranged at the 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 the end of the buffer bin away from the working bin, the vacuum pump is communicated with the transfer bin, the working bin and the buffer bin in sequence through a first pipeline, the inert gas charger is communicated 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 arranged in the transfer bin, the working bin and the buffer bin.

[0006] Preferably, humidity sensors are arranged in the transfer bin, the working bin and / or the buffer bin.

[0007] Preferably, the device further comprises a filling machine, and the filling port of the filling machine is located in the working bin.

[0008] Preferably, the filling machine comprises a hopper, a screw sleeve, a screw rod and a driving motor, the hopper is located at one end of the screw sleeve, the bottom of the hopper is provided with a discharge port, the discharge port is the filling port of the filling machine, the screw sleeve is sleeved outside the screw rod and one end of the screw rod extends into the hopper, the top of the screw sleeve is provided with a feeding port, and one end of the screw rod away from the hopper is in transmission connection with the output end of the driving motor.

[0009] Preferably, the conveying chain comprises a first conveying section arranged at one 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 one end of the buffer bin away from the working bin;

[0010] A plurality of trays for placing the packaging bottles are arranged on the conveying chain in a sliding manner, and the side surface of the tray is provided with a socket;

[0011] A first moving cylinder is arranged on one side of the first conveying section, the output end of the first moving cylinder is connected to a first connecting rod, the first connecting rod is parallel to the first conveying section, a plurality of first inserting rod cylinders are arranged on the first connecting rod, the output end of the first inserting rod cylinder is provided with a first inserting rod which can be inserted into the socket, the axial direction of the first inserting rod is perpendicular to the length direction of the first connecting rod, after the first inserting rod is inserted into the socket of the tray, the first moving cylinder moves the first connecting rod and the first inserting rod cylinder to move the tray from the first conveying section to the second conveying section;

[0012] A second moving cylinder is arranged on one side of the third conveying section and located at one end close to the transfer bin, the output end of the second moving cylinder is connected to a second connecting rod, the second connecting rod is parallel to the third conveying section, a plurality of second inserting rod cylinders are arranged on the second connecting rod, the output end of the second inserting rod cylinder is provided with a second inserting rod which can be inserted into the socket, the axial direction of the second inserting rod is perpendicular to the length direction of the second connecting rod, after the second inserting rod is inserted into the socket of the tray, the second moving cylinder moves the second connecting rod and the second inserting rod cylinder to move the tray from the second conveying section to the third conveying section;

[0013] A third moving cylinder is arranged on one side of the third conveying section and located at one end close to the buffer bin, the output end of the third moving cylinder is connected to a third connecting rod, the third connecting rod is parallel to the third conveying section, a plurality of third inserting rod cylinders are arranged on the third connecting rod, the output end of the third inserting rod cylinder is provided with a third inserting rod which can be inserted into the socket, the axial direction of the third inserting rod is perpendicular to the length direction of the third connecting rod, after the third inserting rod is inserted into the socket of the tray, the third moving cylinder moves the third connecting rod and the third inserting rod cylinder to move the tray from the third conveying section to the fourth conveying section;

[0014] A fourth moving cylinder is arranged on one side of the fifth conveying section, the output end of the fourth moving cylinder is connected to a fourth connecting rod, the fourth connecting rod is parallel to the fifth conveying section, a plurality of fourth inserting rod cylinders are arranged on the fourth connecting rod, the output end of the fourth inserting rod cylinder is provided with a fourth inserting rod which can be inserted into the socket, the axial direction of the fourth inserting rod is perpendicular to the length direction of the fourth connecting rod, after the fourth inserting rod is inserted into the socket of the tray, the fourth moving cylinder moves the fourth connecting rod and the fourth inserting rod cylinder to move the tray from the fourth conveying section to the fifth conveying section.

[0015] Preferably, the other side surface of the tray is also provided with a socket;

[0016] The fifth transfer cylinder is arranged on one side of the second transfer cylinder and close to one end of the transfer warehouse, the output end of the fifth transfer cylinder is connected with a fifth connecting rod, the fifth connecting rod is parallel to the third conveying section, a plurality of fifth inserting rod cylinders are arranged on the fifth connecting rod, the output end of the fifth inserting rod cylinder is provided with a fifth inserting rod which can be inserted into the inserting hole, the axial direction of the fifth inserting rod is perpendicular to the length direction of the fifth connecting rod, after the fifth inserting rod is inserted into the inserting hole of the tray, the fifth transfer cylinder moves the fifth connecting rod and the fifth inserting rod cylinder to transfer the tray into the third conveying section to the filling port of the filling machine.

[0017] Preferably, a powder collecting groove is arranged below the filling port of the filling machine and at the bottom of the third conveying section, the powder collecting groove is arranged in a downward inclined manner, the lower end of the powder collecting groove is open, and a collecting bottle is arranged below the lower end of the powder collecting groove.

[0018] Preferably, an electronic scale is arranged below the filling port of the filling machine.

[0019] Preferably, a groove suitable for the bottom of the packaging bottle is arranged in the middle of the tray.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] (1) When the oxygen-free conveying device is used, the packaging bottles are first transferred to the transfer warehouse by the conveying chain to be vacuumized and filled 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 to be vacuumized and filled with inert gas again, so as to further ensure that the packaging bottles are in an oxygen-free inert gas environment in the working warehouse, thereby ensuring the quality of the product and avoiding the external gas remaining in the transfer warehouse from entering the working warehouse;

[0022] (2) After the processing in the working warehouse is completed, the buffer warehouse is vacuumized and filled with inert gas for the third time, then the packaging bottles are transferred to the buffer warehouse by the conveying chain, the sealing door between the working warehouse and the buffer warehouse is closed, the sealing door away from the working warehouse of the buffer warehouse is opened, and the packaging bottles are removed from the buffer warehouse, so as to avoid the external gas remaining in the buffer warehouse from entering the working warehouse, thereby avoiding affecting the subsequent processing in the working warehouse. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a front view of the present application;

[0024] Figure 2 It is a perspective view of the oxygen-free warehouse, vacuumizing machine and inert gas filling machine in the present application;

[0025] Figure 3 It is a perspective view of the internal structure of the present application;

[0026] Figure 4The internal structure plan view of the utility model;

[0027] Figure 5 The utility model discloses a third conveying section front section's three-dimensional structure schematic diagram;

[0028] Figure 6 The utility model discloses a third conveying section front section's three-dimensional structure schematic diagram;

[0029] Figure 7 The utility model discloses a third conveying section front section's three-dimensional structure schematic diagram;

[0030] Figure 8 The utility model discloses a third conveying section front section's three-dimensional structure schematic diagram;

[0031] Figure 9 The utility model discloses a third conveying section front section's three-dimensional structure schematic diagram;

[0032] Figure 10 The utility model discloses a third conveying section front section's three-dimensional structure schematic diagram;

[0033] Figure 11 The utility model discloses a third conveying section front section's three-dimensional structure schematic diagram;

[0034] The utility model discloses a third conveying section front section's three-dimensional structure schematic diagram;

[0035] 1-conveying chain;11-first conveying section;111-first moving cylinder;112-first connecting rod;113-first inserting rod cylinder;114-first inserting rod;12-second conveying section;13-third conveying section;131-second moving cylinder;132-second connecting rod;133-second inserting rod cylinder;134-second inserting rod;135-third moving cylinder;136-third connecting rod;137-third inserting rod cylinder;138-third inserting rod;139-fifth moving cylinder;1310-fifth connecting rod;1311-fifth inserting rod cylinder;1312-fifth inserting rod;1313-sixth moving cylinder;1314-sixth connecting rod;1315-sixth inserting rod cylinder;1316-sixth inserting rod;14-fourth conveying section;15-fifth conveying section;151-fourth moving cylinder;152-fourth connecting rod;153-fourth inserting rod cylinder;154-fourth inserting rod;16-tray;161-inserting hole;162-groove;17-roller;

[0036] 2-oxygen-free bin;21-transferring bin;22-working bin;23-buffer bin;

[0037] 3-filling machine;31-hopper;311-discharge port;32-screw sleeve;321-feeding port;33-screw;34-driving motor;35-powder collecting groove;36-collecting bottle;37-electronic scale;38-supporting frame;

[0038] 4 - vacuum pump; 41 - first pipe;

[0039] 5 - inert gas charger; 51 - second pipe;

[0040] 6 - capping machine; 61 - conveyor belt; 62 - capping plate; 63 - capping cylinder; 64 - lifting cylinder; 65 - fixed plate; 66 - servo motor; 67 - rotating sleeve;

[0041] 7 - desiccant feeder; 71 - unwinding shaft; 72 - guide roller; 73 - cutter;

[0042] 8 - sealing door;

[0043] 9 - packaging bottle. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0045] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0046] Referring to Figures 1 to 3The oxygen-free conveying device comprises a conveying chain 1, a transfer bin 21, a working bin 22, a buffer bin 23, a vacuumizing machine 4 and an inert gas inflator 5, the conveying chain 1 passes through the transfer bin 21, the working bin 22 and the buffer bin 23 in sequence, the transfer bin 21, the working bin 22 and the buffer bin 23 are connected in sequence, the end of the transfer bin 21 away from the working bin 22, the space between the transfer bin 21 and the working bin 22, the space between the working bin 22 and the buffer bin 23 and the end of the buffer bin 23 away from the working bin 22 are all provided with a sealing door 8, the transfer bin 21, the working bin 22 and the buffer bin 23 are all oxygen-free bins 2, the vacuumizing machine 4 is communicated with the transfer bin 21, the working bin 22 and the buffer bin 23 in sequence through a first pipeline 41, the inert gas inflator 5 is communicated with the transfer bin 21, the working bin 22 and the buffer bin 23 in sequence through a second pipeline 51, and the transfer bin 21, the working bin 22 and the buffer bin 23 are all provided with oxygen detection sensors and gas pressure sensors (not shown in the figure).

[0047] During filling, the packaging bottle 9 is first moved to the transfer bin 21 by the conveying chain 1 to be vacuumized and filled with inert gas, so that the packaging bottle 9 is in an oxygen-free inert gas environment in the transfer bin 21, and then the packaging bottle 9 enters the working bin 22 to be vacuumized and filled with inert gas again, so as to further ensure that the packaging bottle 9 is in an oxygen-free inert gas environment during filling, thereby ensuring the quality of the product and avoiding the external gas remaining in the transfer bin 21 from entering the working bin 22.

[0048] After filling, the buffer bin 23 is first vacuumized and filled with inert gas for the third time, and then the packaging bottle 9 is moved to the buffer bin 23 by the conveying chain 1, the sealing door 8 between the working bin 22 and the buffer bin 23 is closed, and the sealing door 8 at the end of the buffer bin 23 away from the working bin 22 is opened, so that the packaging bottle 9 is moved out of the buffer bin 23, thereby avoiding the external gas remaining in the buffer bin 23 from entering the working bin 22, and thus avoiding affecting the subsequent powder filling in the working bin 22.

[0049] It should be noted that the oxygen-free conveying device can not only be used in the powder filling process, but also can be used in other oxygen-free conveying scenarios, and the powder filling is taken as an example for description.

[0050] Preferably, the three communication ports of the first pipeline 41 communicated with the transfer bin 21, the working bin 22 and the buffer bin 23, and the three communication ports of the second pipeline 51 communicated with the transfer bin 21, the working bin 22 and the buffer bin 23 can be respectively provided with on-off valves to separately control the on-off of the first pipeline 41 communicated with the transfer bin 21, the working bin 22 and the buffer bin 23 and the on-off of the second pipeline 51 communicated with the transfer bin 21, the working bin 22 and the buffer bin 23, so as to separately control the vacuumizing process and the inert gas filling process of the transfer bin 21, the working bin 22 and the buffer bin 23.

[0051] Preferably, the working bin 22 is provided with a humidity sensor (not shown in the figure). By providing the humidity sensor, the humidity level in the working bin 22 can be monitored in real time, so that the humidity in the bin can be kept within an appropriate range, and humidity abnormalities can be found in time to avoid damage to the powder due to dampness. In addition, the transit bin 21 and / or the buffer bin 23 can also be provided with a humidity sensor to detect the humidity in the transit bin 21 and / or the buffer bin 23 in real time. In this embodiment, the humidity requirement of the three oxygen-free bins is ≤20%, and the humidity requirement can be adjusted according to actual conditions.

[0052] Further, the oxygen-free conveying device further comprises a filling machine 3, and the filling port of the filling machine 3 is located in the working bin 22. The filling machine 3 is used for powder filling.

[0053] Specifically, referring to Figures 3 to 8 , the conveying chain 1 comprises a first conveying section 11 arranged at one end of the transit bin 21 away from the working bin 22, a second conveying section 12 arranged in the transit bin 21, a third conveying section 13 arranged in the working bin 22, a fourth conveying section 14 arranged in the buffer bin 23, and a fifth conveying section 15 arranged at one 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 advancing direction of the packaging bottle 9;

[0054] A plurality of trays 16 for placing the packaging bottles 9 are slidably arranged on the conveying chain 1. The packaging bottles 9 are placed on the trays 16 and transported along the conveying chain 1. One side of the tray 16 is provided with a socket 161.

[0055] The first conveying section 11 is provided with a first moving cylinder 111 on one side, the output end of the first moving cylinder 111 is connected with a first connecting rod 112, the first connecting rod 112 is parallel to the first conveying section 11, a plurality of first inserting rod cylinders 113 are arranged on the first connecting rod 112, the output end of the first inserting rod cylinder 113 is provided with a first inserting rod 114 which can be inserted into the insertion hole 161, the axial direction of the first inserting rod 114 is perpendicular to the length direction of the first connecting rod 112, after the first inserting rod 114 is inserted into the insertion hole 161 of the tray 16, the first moving cylinder 111 moves the first connecting rod 112 and the first inserting rod cylinder 113 to move the tray 16 from the first conveying section 11 to the second conveying section 12; when it is needed to move the packaging bottle 9 from the first conveying section 11 to the second conveying section 12, i.e. to move the packaging bottle 9 from the outside to the transfer warehouse 21, first, the first inserting rod cylinder 113 drives the first inserting rod 114 to insert the first inserting rod 114 into the insertion hole 161 of the tray 16, then the first moving cylinder 111 drives the first connecting rod 112 to move the first connecting rod 112 to the direction of the second conveying section 12, at this time, the first connecting rod 112 drives the first inserting rod cylinder 113, the first inserting rod 114, the tray 16 on the first conveying section 11 and the packaging bottle 9 on the tray 16 to move to the direction of the second conveying section 12, so as to move the packaging bottle 9 to the second conveying section 12, then the first inserting rod cylinder 113 drives the first inserting rod 114 to move away from the insertion hole 161 of the tray 16, and then the first moving cylinder 111 drives the first connecting rod 112 to drive the first inserting rod cylinder 113 and the first inserting rod 114 to reset, so that the first connecting rod 112 returns to the side of the first conveying section 11 to wait for the next moving; in this embodiment, three first inserting rod cylinders 113 are arranged on the first connecting rod 112, the first moving cylinder 111 can move three packaging bottles 9 on the first conveying section 11 to the second conveying section 12 at a time, of course, the number of the first inserting rod cylinders 113 can be increased or reduced according to needs, which is not limited here; the first moving cylinder 111 is arranged on the side of the first conveying section 11 instead of the side of the second conveying section 12, which can shorten the length of the second conveying section 12, thereby shortening the length of the transfer warehouse 21 and saving more space;

[0056] The second transfer cylinder 131 is arranged on one side of the third conveying section 13 and close to one end of the transfer warehouse 21. The output end of the second transfer cylinder 131 is connected with a second connecting rod 132, the second connecting rod 132 is parallel to the third conveying section 13, and a plurality of second inserting rod cylinders 133 are arranged on the second connecting rod 132. The output end of the second inserting rod cylinder 133 is provided with a second inserting rod 134 which can be inserted into the insertion hole 161. The axial direction of the second inserting rod 134 is perpendicular to the length direction of the second connecting rod 132. After the second inserting rod 134 is inserted into the insertion hole 161 of the tray 16, the second transfer cylinder 131 moves the second connecting rod 132 and the second inserting rod cylinder 133 to transfer the tray 16 from the second conveying section 12 to the third conveying section 13. When it is needed 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 warehouse 21 to the working warehouse 22, first, the second transfer cylinder 131 drives the second connecting rod 132 to move the second connecting rod 132 to the second conveying section 12 until the second inserting rod 134 is aligned with the insertion hole 161 of the tray 16. Then, the second inserting rod cylinder 133 drives the second inserting rod 134 to insert the second inserting rod 134 into the insertion hole 161 of the tray 16. Then, the second transfer cylinder 131 drives the second connecting rod 132 to move the second connecting rod 132 to the third conveying section 13. At this time, the second connecting rod 132 drives the second inserting rod cylinder 133, the second inserting rod 134, the tray 16 on the second conveying section 12 and the packaging bottle 9 on the tray 16 to move to the third conveying section 13, so as to transfer the packaging bottle 9 to the third conveying section 13. Finally, the second inserting rod cylinder 133 drives the second inserting rod 134 to move away from the insertion hole 161 of the tray 16, waiting for the next transfer. In this embodiment, three second inserting rod cylinders 133 are arranged on the second connecting rod 132. The second transfer cylinder 131 can simultaneously transfer three packaging bottles 9 on the second conveying section 12 to the third conveying section 13 at one time. Of course, the number of the second inserting rod cylinders 133 can be increased or decreased according to needs, which is not limited here. The second transfer cylinder 131 is arranged on one side of the third conveying section 13 instead of being arranged on one side of the second conveying section 12, which can shorten the length of the second conveying section 12, thereby shortening the length of the transfer warehouse 21 and saving more space.

[0057] The third conveying section 13 is provided with a third transfer cylinder 135 at one side close to one end of the buffer bin 23. The output end of the third transfer cylinder 135 is connected to a third connecting rod 136 which is parallel to the third conveying section 13. The third connecting rod 136 is provided with a plurality of third inserting rod cylinders 137. The output end of the third inserting rod cylinder 137 is provided with a third inserting rod 138 which can be inserted into the insertion hole 161. The axial direction of the third inserting rod 138 is perpendicular to the length direction of the third connecting rod 136. After the third inserting rod 138 is inserted into the insertion hole 161 of the tray 16, the third transfer cylinder 135 moves the third connecting rod 136 and the third inserting rod cylinder 137 to transfer the tray 16 from the third conveying section 13 to the fourth conveying section 14. When it is needed to transfer the packaging bottle 9 from the third conveying section 13 to the fourth conveying section 14, i.e. to transfer the packaging bottle 9 from the working bin 22 to the buffer bin 23, the third inserting rod cylinder 137 is first driven to make the third inserting rod 138 inserted into the insertion hole 161 of the tray 16. Then the third transfer cylinder 135 is driven to make the third connecting rod 136 move towards the fourth conveying section 14. At this time, the third connecting rod 136 drives the third inserting rod cylinder 137, the third inserting rod 138, the tray 16 on the third conveying section 13 and the packaging bottle 9 on the tray 16 to move towards the fourth conveying section 14, so as to transfer the packaging bottle 9 to the fourth conveying section 14. Subsequently, the third inserting rod cylinder 137 is driven to make the third inserting rod 138 leave the insertion hole 161 of the tray 16. Then the third transfer cylinder 135 is driven to make the third connecting rod 136 drive the third inserting rod cylinder 137 and the third inserting rod 138 to reset. In this embodiment, the third connecting rod 136 is provided with three third inserting rod cylinders 137. The single movement of the third inserting rod cylinder 137 can simultaneously transfer three packaging bottles 9 on the third conveying section 13 to the fourth conveying section 14. Of course, the number of the third inserting rod cylinders 137 can be increased or decreased according to needs, which is not limited herein. The third transfer cylinder 135 is arranged at one side of the third conveying section 13 instead of being arranged at one side of the fourth conveying section 14, which can shorten the length of the fourth conveying section 14, thereby shortening the length of the buffer bin 23 and saving more space.

[0058] The fourth transfer cylinder 151 is arranged on one side of the fifth conveying section 15, and the output end of the fourth transfer cylinder 151 is connected with a fourth connecting rod 152 which is parallel to the fifth conveying section 15. The fourth connecting rod 152 is provided with a plurality of fourth inserting rod cylinders 153, and the output end of the fourth inserting rod cylinder 153 is provided with a fourth inserting rod 154 which can be inserted into the insertion hole 161. The axial direction of the fourth inserting rod 154 is perpendicular to the length direction of the fourth connecting rod 152. After the fourth inserting rod 154 is inserted into the insertion hole 161 of the tray 16, the fourth transfer cylinder 151 moves 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 inserting rod cylinder 153. When it is needed to move the packaging bottle 9 from the fourth conveying section 14 to the fifth conveying section 15, that is, to move the packaging bottle 9 from the buffer bin 23 to the outside, first, the fourth transfer cylinder 151 drives the fourth connecting rod 152 to move the fourth connecting rod 152 to the fourth conveying section 14 until the fourth inserting rod 154 is aligned with the insertion hole 161 of the tray 16. Then, the fourth inserting rod cylinder 153 drives the fourth inserting rod 154 to insert the fourth inserting rod 154 into the insertion hole 161 of the tray 16. Then, the fourth transfer cylinder 151 drives the fourth connecting rod 152 to move the fourth connecting rod 152 to the fifth conveying section 15. At this time, the fourth connecting rod 152 drives the fourth inserting rod cylinder 153, the fourth inserting rod 154, the tray 16 on the fourth conveying section 14 and the packaging bottle 9 on the tray 16 to move to the fifth conveying section 15, so as to move the packaging bottle 9 to the fifth conveying section 15. Finally, the fourth inserting rod cylinder 153 drives the fourth inserting rod 154 to move away from the insertion hole 161 of the tray 16, and waits for the next movement. In this embodiment, the fourth connecting rod 152 is provided with three fourth inserting rod cylinders 153, and the fourth transfer cylinder 151 can move three packaging bottles 9 on the fourth conveying section 14 to the fifth conveying section 15 at a time. Of course, the number of the fourth inserting rod cylinders 153 can be increased or decreased according to the needs, which is not limited herein. The fourth transfer cylinder 151 is arranged on one side of the fifth conveying section 15 instead of being arranged on one side of the fourth conveying section 14, so as to shorten the length of the fourth conveying section 14, thereby shortening the length of the buffer bin 23 and saving more space.

[0059] Preferably, referring to Figure 5 and Figure 6 , a plurality of rollers 17 are arranged on the conveying chain 1 along the movement direction of the packaging bottle 9. The rollers 17 enable the tray 16 to slide, so as to reduce the resistance of the packaging bottle 9 during the movement, thereby facilitating the movement of the packaging bottle 9.

[0060] Preferably, referring to Figure 3 , Figure 4 and Figure 6 , the other side of the tray 16 is also provided with the insertion hole 161.

[0061] The third conveying section 13 is provided with a fifth transfer cylinder 139 at one end close to the transfer warehouse 21 relative to one side of the second transfer cylinder 131. The output end of the fifth transfer cylinder 139 is connected to a fifth connecting rod 1310 which is parallel to the third conveying section 13. The fifth connecting rod 1310 is provided with a plurality of fifth inserting rod cylinders 1311. The output end of the fifth inserting rod cylinder 1311 is provided with a fifth inserting rod 1312 which can be inserted into the insertion hole 161. The axial direction of the fifth inserting rod 1312 is perpendicular to the length direction of the fifth connecting rod 1310. After the fifth inserting rod 1312 is inserted into the insertion hole 161 of the tray 16, the fifth transfer cylinder 139 moves the fifth connecting rod 1310 and the fifth inserting rod cylinder 1311 to transfer the tray 16 entering the third conveying section 13 one by one to below the filling port of the filling machine 3. When filling is needed, the fifth inserting rod 1312 is driven by the fifth inserting rod cylinder 1311 to be inserted into the insertion hole 161 of the tray 16. Then the fifth connecting rod 1310 is driven by the fifth transfer cylinder 139 to move towards the filling port of the filling machine 3. At this time, the fifth connecting rod 1310 drives the fifth inserting rod cylinder 1311, the fifth inserting rod 1312, the tray 16 on the third conveying section 13 and the packaging bottle 9 on the tray 16 to move towards the filling port of the filling machine 3, so as to transfer the packaging bottle 9 to below the filling port of the filling machine 3. Subsequently, the fifth inserting rod 1312 is driven by the fifth inserting rod cylinder 1311 to move away from the insertion hole 161 of the tray 16. Then the fifth connecting rod 1310 is driven by the fifth inserting rod cylinder 1311 to reset the fifth inserting rod cylinder 1311 and the fifth inserting rod 1312, so as to make the fifth connecting rod 1310 return to the initial position to wait for the next transfer. The packaging bottle 9 can be transferred one by one to below the filling port of the filling machine 3 by controlling the moving distance of the fifth connecting rod 1310. At the same time, the packaging bottle 9 which has completed filling can be moved out of below the filling port of the filling machine 3 one by one. The moving distance of single movement is equal to the length of one tray 16. In addition, the tray 16 which has moved out of below the filling port of the filling machine 3 is pushed by the rear tray 16 to move along the third conveying section 13 away from the transfer warehouse 21. In this embodiment, the fifth connecting rod 1310 is provided with three fifth inserting rod cylinders 1311. The fifth transfer cylinder 139 can transfer three packaging bottles 9 on the third conveying section 13 at a time. Of course, the number of the fifth inserting rod cylinders 1311 can be increased or decreased according to needs, which is not limited herein.

[0062] As Figure 9The filling machine 3 of the embodiment comprises 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. The bottom of the hopper 31 is provided with a discharge port 311 which is the filling port of the filling machine 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. The top of the screw sleeve 32 is provided with a feeding port 321 through which powder can be supplemented into the screw sleeve 32. The end of the screw rod 33 away from the hopper 31 is in driving connection with 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 the hopper 31 through the discharge port 311.

[0063] Preferably, referring to Figure 9 , in order to avoid the powder scattering and accumulating on the third conveying section 13 due to the small bottle opening of the packaging bottle 9 and affecting the movement of the tray 16, a powder collecting groove 35 is arranged directly below the filling port of the filling machine 3 and at the bottom of the third conveying section 13. The powder collecting groove 35 is arranged obliquely downward. The lower end of the powder collecting groove 35 is open. A collecting bottle 36 is arranged below the lower end of the powder collecting groove 35. The collecting bottle 36 is used to collect the powder sliding down from the powder collecting groove 35.

[0064] Preferably, referring to Figure 9 , an electronic scale 37 is arranged directly below the filling port of the filling machine 3 and at the bottom of the third conveying section 13. In order not to affect the powder collecting groove 35, the electronic scale 37 is installed on 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. When the total weight reaches the target weight, the filling is ended. The packaging bottle 9, the tray 16 and the support frame 38 are almost unchanged. The weight of the filled powder can be adjusted by adjusting the total weight.

[0065] Preferably, the device comprises a capping machine 6. The capping end of the capping machine 6 is located in the working bin 22 and behind the filling port of the filling device 3. Referring to Figure 3 , Figure 4 and Figure 7The middle side of the third conveying section 13 is provided with a sixth transfer cylinder 1313, the output end of the sixth transfer cylinder 1313 is connected with a sixth connecting rod 1314, the sixth connecting rod 1314 is parallel to the third conveying section 13, a plurality of sixth inserting rod cylinders 1315 are arranged on the sixth connecting rod 1314, the output end of the sixth inserting rod cylinder 1315 is provided with a sixth inserting rod 1316 which can be inserted into the insertion hole 161, the axial direction of the sixth inserting rod 1316 is perpendicular to the length direction of the sixth connecting rod 1314, after the sixth inserting rod 1316 is inserted into the insertion hole 161 of the tray 16, the sixth transfer cylinder 1313 moves the sixth connecting rod 1314 and the sixth inserting rod cylinder 1315 to transfer the tray 16 entering the third conveying section 13 one by one to the position below the capping end of the capping machine 6. When capping is needed, first, the sixth transfer cylinder 1313 drives the sixth connecting rod 1314 to move the sixth connecting rod 1314 to the direction of the filling machine 3 until the sixth inserting rod 1316 is aligned with the insertion hole 161 of the tray 16, then the sixth inserting rod cylinder 1315 drives the sixth inserting rod 131 to insert the sixth inserting rod 131 into the insertion hole 161 of the tray 16, then the sixth transfer cylinder 1313 drives the sixth connecting rod 1314 to move to the direction of the capping machine 6, at this time, the sixth connecting rod 1314 drives the sixth inserting rod cylinder 1315, the sixth inserting rod 131, the tray 16 on the third conveying section 13 and the packaging bottle 9 on the tray 16 to move to the direction of the capping machine 6, so as to transfer the packaging bottle 9 to the position below the capping end of the capping machine 6, finally, the sixth inserting rod cylinder 1315 drives the sixth inserting rod 131 to move away from the insertion hole 161 of the tray 16, 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; the packaging bottle 9 can be transferred one by one to the position below the capping end of the capping machine 6 by controlling the moving distance of the sixth connecting rod 1314, and the packaging bottle 9 which has completed capping can be moved out of the position below the capping end of the capping machine 6 one by one, the moving distance of single movement is equal to the length of one tray 16, in addition, the tray 16 which has moved out of the position below the capping end of the capping machine 6 will be pushed by the rear tray 16 to move along the third conveying section 13 to the direction away from the transfer warehouse 21 of the third conveying section 13; in this embodiment, three sixth inserting rod cylinders 1315 are arranged on the sixth connecting rod 1314, the sixth inserting rod cylinder 1315 can transfer three packaging bottles 9 on the third conveying section 13 at the same time by single movement, of course, the number of the sixth inserting rod cylinder 1315 can be increased or decreased according to the needs, which is not limited here.

[0066] Specifically, referring to Figure 3 、 Figure 10 and Figure 11The screwing machine 6 comprises a conveying belt 61, a cap feeding plate 62, a cap feeding cylinder 63, a lifting cylinder 64, a fixing plate 65, a servo motor 66 and a rotating sleeve 67 for screwing, the output end of the conveying belt 61 is located at one side of the third conveying section 13, the cap feeding plate 62 is horizontally arranged at the same horizontal plane of the output end of the conveying belt 61 and is arranged on the output end of the cap feeding cylinder 63 so that the cap feeding plate 62 can be close to and away from the output end of the conveying belt 61, the lifting cylinder 64 is arranged above the third conveying section 13, the fixing plate 65 is arranged on the output end of the lifting cylinder 64, the servo motor 66 is installed on the fixing plate 65, and the rotating sleeve 67 is arranged on the output shaft of the servo motor 66. After the cap feeding plate 62 is driven by the cap feeding cylinder 63 to take the bottle cap from the output end of the conveying belt 61 and feed it to above the third conveying section 13, the servo motor 66 is driven by the lifting cylinder 64 to move downward until the bottle cap enters the rotating sleeve 67, then the cap feeding plate 62 is reset while the servo motor 66 is continuously driven by the lifting cylinder 64 to move downward, and the rotating sleeve 67 is driven by the servo motor 66 to perform the screwing operation. First, the bottle cap is conveyed to the cap feeding plate 62 by the conveying belt 61, then the cap feeding plate 62 conveys the bottle cap to below the rotating sleeve 67 by the cap feeding cylinder 63, and then the servo motor 66 is driven by the lifting cylinder 64 to move downward until the bottle cap enters the rotating sleeve 67, then the cap feeding plate 62 is reset while the servo motor 66 is continuously driven by the lifting cylinder 64 to move downward, and the rotating sleeve 67 is driven by the servo motor 66 to perform the screwing operation, so that the bottle cap is screwed into the bottle mouth of the packaging bottle 9, and the packaging bottle 9 after filling is sealed.

[0067] Preferably, as Figure 5 The middle part of the tray 16 is provided with a groove 162 matched with the bottom of the packaging bottle 9, so that the packaging bottle 9 can be stably placed on the tray 16, and the packaging bottle 9 is prevented from falling over.

[0068] Preferably, as Figure 3 The oxygen-free conveying device further comprises a desiccant feeding machine 7 for feeding desiccant into the packaging bottle 9, and the feeding outlet of the desiccant feeding machine 7 is located in the working chamber 22 and behind the filling port of the filling machine 3. In the working chamber 22, the powder is first filled into the packaging bottle 9 by the filling machine 3, then the desiccant is fed into the packaging bottle 9 by the desiccant feeding machine 7, and finally the packaging bottle 9 is sealed by the screwing machine 6. When the sixth transfer cylinder 1313 moves the tray 16 entering the third conveying section 13 one by one to below the screwing end of the screwing device 6, it will pass below the feeding outlet of the desiccant feeding device 7, at which time the desiccant feeding device 7 is started and the desiccant is fed into the packaging bottle 9.

[0069] Specifically, as Figure 3 and Figure 10The desiccant feeding machine 7 comprises a feeding shaft 71 for rotating the desiccant roll, a plurality of guide rollers 72 for guiding the desiccant roll, and a cutter 73. One end of the desiccant roll is wound on the feeding shaft 71, and the other end is output vertically to the bottle mouth of the packaging bottle 9 after passing through the plurality of guide rollers 72. The cutter 73 is arranged on the side of the output end of the desiccant roll and moves in a direction perpendicular to the output direction of the desiccant roll. The desiccant roll is transported to the bottle mouth of the packaging bottle 9 through the cooperation of the feeding shaft 71 and the plurality of guide rollers 72, and is cut by the cutter 73. After being cut, the desiccant roll becomes a single package of desiccant, which automatically falls into the packaging bottle 9.

[0070] The steps of powder filling using the above oxygen-free conveying device are as follows:

[0071] S1: Place the packaging bottle 9 at the inlet end of the conveying chain 1, open the sealing door 8 away from the working chamber 22 of the transfer chamber 21, and keep the remaining sealing doors 8 closed. After moving the packaging bottle 9 to the transfer chamber 21 by the conveying chain 1, close the sealing door 8 away from the working chamber 22 of the transfer chamber 21. Then, use the vacuum pump 4 to exhaust the gas in the transfer chamber 21, and use the inert gas filling machine 5 to inject inert gas into the transfer chamber 21 until the oxygen detection sensor and the gas pressure sensor in the transfer chamber 21 reach the set value.

[0072] S2: Open the sealing door 8 between the transfer chamber 21 and the working chamber 22, and keep the remaining sealing doors 8 closed. After moving the packaging bottle 9 to the transfer chamber 21 by the conveying chain 1, close the sealing door 8 between the transfer chamber 21 and the working chamber 22. Then, use the vacuum pump 4 to exhaust the gas in the working chamber 22, and use the inert gas filling machine 5 to inject inert gas into the working chamber 22 until the oxygen detection sensor and the gas pressure sensor in the working chamber 22 reach the set value.

[0073] S3: Move the packaging bottle 9 to the filling port below the filling machine 3 by the conveying chain 1, and start the filling machine 3 to fill the powder into the packaging bottle 9.

[0074] S4: Use the vacuum pump 4 to exhaust the gas in the buffer chamber 23, and use the inert gas filling machine 5 to inject inert gas into the buffer chamber 23 until the oxygen detection sensor and the gas pressure sensor in the buffer chamber 23 reach the set value. Then, open the sealing door 8 between the working chamber 22 and the buffer chamber 23, and keep the remaining sealing doors 8 closed. After moving the packaging bottle 9 to the buffer chamber 23 by the conveying chain 1, close the sealing door 8 between the working chamber 22 and the buffer chamber 23.

[0075] S5: Open the sealing door 8 away from the working chamber 22 of the buffer chamber 23, and keep the remaining sealing doors 8 closed. After moving the packaging bottle 9 out of the buffer chamber 23 by the conveying chain 1, close the sealing door 8 away from the working chamber 22 of the buffer chamber 23.

[0076] It should be noted that the set values of the oxygen detection sensors and the gas pressure sensors in the transfer warehouse 21, the working warehouse 22 and the buffer warehouse 23 can be set according to the needs of powder filling.

[0077] When the oxygen-free conveying device is provided with the capping machine 6, step S3 is: moving the packaging bottle 9 to below the filling port of the filling machine 3 through the conveying chain 1, starting the filling machine 3 to fill the powder into the packaging bottle 9, then continuing to move the packaging bottle 9 to below the capping end of the capping machine 6 through the conveying chain 1, and starting the capping machine 6 to cap the bottle cap on the packaging bottle 9.

[0078] When the oxygen-free conveying device is provided with the desiccant feeding machine 7, step S3 is: moving the packaging bottle 9 to below the filling port of the filling machine 3 through the conveying chain 1, starting the filling machine 3 to fill the powder into the packaging bottle 9, then continuing to move the packaging bottle 9 to below the feeding outlet of the desiccant feeding machine 7 through the conveying chain 1, starting the desiccant feeding machine 7 to feed the desiccant into the packaging bottle 9, and then continuing to move the packaging bottle 9 to below the capping end of the capping machine 6 through the conveying chain 1, and starting the capping machine 6 to cap the bottle cap on the packaging bottle 9.

[0079] In this embodiment, three packaging bottles 9 are filled in each batch, and the same batch of packaging bottles 9 is simultaneously moved from the inlet end of the conveying chain 1 into the transfer warehouse 21, then simultaneously moved from the transfer warehouse 21 into the working warehouse 22, then simultaneously moved from the working warehouse 22 into the buffer warehouse 23 after powder filling in the working warehouse 22, and finally moved out of the buffer warehouse 23.

[0080] After the previous batch of packaging bottles 9 is moved 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 move the next batch of packaging bottles 9 into the transfer warehouse 21; after the previous batch of packaging bottles 9 is moved 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 move the next batch of packaging bottles 9 into the working warehouse 22; and 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 move 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 is moved in, which can ensure continuous filling, shorten the waiting time, and thus improve the efficiency of filling.

[0081] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An oxygen-free conveying device characterized in that, it comprises a conveying chain, a transfer bin, a working bin, a buffer bin, a vacuum pump and an inert gas inflator, the conveying chain sequentially passes through the transfer bin, the working bin and the buffer bin, the transfer bin, the working bin and the buffer bin are sequentially connected, the 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 the end of the buffer bin away from the working bin are all provided with sealing doors, the vacuum pump is in communication with the transfer bin, the working bin and the buffer bin through a first pipeline in sequence, the inert gas inflator is in communication with the transfer bin, the working bin and the buffer bin through a second pipeline in sequence, and oxygen detection sensors and gas pressure sensors are arranged in the transfer bin, the working bin and the buffer bin.

2. The oxygen-free conveying device according to claim 1 characterized in that, humidity sensors are arranged in the transfer bin, the working bin and / or the buffer bin.

3. The oxygen-free conveying device according to claim 1 characterized in that, it further comprises a filling machine, and the filling port of the filling machine is located in the working bin.

4. The oxygen-free conveying device according to claim 3 characterized in that, the filling machine comprises a hopper, a sleeve, a screw rod and a driving motor, the hopper is located at one end of the sleeve, the bottom of the hopper is provided with a discharge port, the discharge port is the filling port of the filling machine, the sleeve is sleeved on the outside of the screw rod and one end of the screw rod extends into the hopper, the top of the sleeve is provided with a feeding port, and one end of the screw rod away from the hopper is in driving connection with the output end of the driving motor.

5. The oxygen-free conveying device according to claim 3 characterized in that, the conveying chain comprises a first conveying section arranged at the 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 the end of the buffer bin away from the working bin; a plurality of trays for placing packaging bottles are slidably arranged on the conveying chain, and the side surface of each tray is provided with a socket; one side of the first conveying section is provided with a first transfer cylinder, the output end of the first transfer cylinder is connected with a first connecting rod, the first connecting rod is parallel to the first conveying section, a plurality of first inserting rod cylinders are arranged on the first connecting rod, the output end of each first inserting rod cylinder is provided with a first inserting rod which can be inserted into the socket, the axial direction of the first inserting rod is perpendicular to the length direction of the first connecting rod, and after the first inserting rod is inserted into the socket of the tray, the first transfer cylinder moves the tray from the first conveying section to the second conveying section by moving the first connecting rod and the first inserting rod cylinder. The second transfer cylinder is arranged on one side of the third conveying section and close to one end of the buffer bin, and the output end of the second transfer cylinder is connected with a second connecting rod which is parallel to the third conveying section, and a plurality of second inserting rod cylinders are arranged on the second connecting rod, and the output end of the second inserting rod cylinder is provided with a second inserting rod which can be inserted into the inserting hole, and the axial direction of the second inserting rod is perpendicular to the length direction of the second connecting rod, and after the second inserting rod is inserted into the inserting hole of the tray, the second transfer cylinder moves the tray from the second conveying section to the third conveying section through the second connecting rod and the second inserting rod cylinder; The third transfer cylinder is arranged on one side of the third conveying section and close to one end of the buffer bin, and the output end of the third transfer cylinder is connected with a third connecting rod which is parallel to the third conveying section, and a plurality of third inserting rod cylinders are arranged on the third connecting rod, and the output end of the third inserting rod cylinder is provided with a third inserting rod which can be inserted into the inserting hole, and the axial direction of the third inserting rod is perpendicular to the length direction of the third connecting rod, and after the third inserting rod is inserted into the inserting hole of the tray, the third transfer cylinder moves the tray from the third conveying section to the fourth conveying section through the third connecting rod and the third inserting rod cylinder; The fourth transfer cylinder is arranged on one side of the fifth conveying section, and the output end of the fourth transfer cylinder is connected with a fourth connecting rod which is parallel to the fifth conveying section, and a plurality of fourth inserting rod cylinders are arranged on the fourth connecting rod, and the output end of the fourth inserting rod cylinder is provided with a fourth inserting rod which can be inserted into the inserting hole, and the axial direction of the fourth inserting rod is perpendicular to the length direction of the fourth connecting rod, and after the fourth inserting rod is inserted into the inserting hole of the tray, the fourth transfer cylinder moves the tray from the fourth conveying section to the fifth conveying section through the fourth connecting rod and the fourth inserting rod cylinder.

6. The oxygen-free conveying device according to claim 5, wherein The other side of the tray is also provided with an inserting hole; The fifth transfer cylinder is arranged on one side of the third conveying section and close to one end of the buffer bin, and the output end of the fifth transfer cylinder is connected with a fifth connecting rod which is parallel to the third conveying section, and a plurality of fifth inserting rod cylinders are arranged on the fifth connecting rod, and the output end of the fifth inserting rod cylinder is provided with a fifth inserting rod which can be inserted into the inserting hole, and the axial direction of the fifth inserting rod is perpendicular to the length direction of the fifth connecting rod, and after the fifth inserting rod is inserted into the inserting hole of the tray, the fifth transfer cylinder moves the tray from the third conveying section to the filling port of the filling machine one by one through the fifth connecting rod and the fifth inserting rod cylinder.

7. The oxygen-free conveying device according to claim 5, wherein A powder collecting groove is arranged directly below the filling port of the filling machine and at the bottom of the third conveying section, and the powder collecting groove is arranged in a downward inclined manner, and the lower end of the powder collecting groove is open, and a collecting bottle is arranged below the lower end of the powder collecting groove.

8. The oxygen-free conveying device according to claim 5, wherein The electronic scale is arranged right below the filling port of the filling machine and at the bottom of the third conveying section.

9. The oxygen-free delivery device of claim 5, wherein, The middle part of the tray is provided with a groove adapted to the bottom of the packaging bottle.

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