A device for quickly filling nitrogen into edible oil and locking cover

Abstract

This utility model proposes a rapid nitrogen-filling and capping device for edible oil, comprising a cap-feeding mechanism with a downwardly inclined cap-feeding frame and a cap-feeding slide. Specifically, it also includes a nitrogen-filling mechanism, comprising a gas pipe support and a nitrogen-filling pipe. The end section of the nitrogen-filling pipe is located below the cap-feeding frame near the end of the cap-feeding slide, and the end of the nitrogen-filling pipe has a downwardly arranged nitrogen-filling nozzle. This achieves the technical objective of simple and efficient nitrogen-filling, and reduced installation and maintenance costs. Furthermore, a position sensor, a nitrogen-filling control module, and a nitrogen control valve are provided to regulate the nitrogen-filling status. Additionally, a pre-compression mechanism is provided to press the cap onto the bottle while it is being capped, pre-pressing the cap onto the bottle opening before capping, effectively preventing nitrogen leakage from the bottle. The bottle is further transported during the nitrogen-filling, capping, and capping processes via a spiral bottle-feeding mechanism, a first star wheel, and a capping device, ultimately completing the edible oil nitrogen-filling and capping process efficiently and reliably.

Description

Technical Field

[0001] This utility model relates to the field of edible oil packaging technology, specifically a rapid nitrogen-filling and locking device for edible oil. Background Technology

[0002] Currently, the capping process for bottled cooking oil involves a bottle conveyor line filling the bottles with cooking oil and a cap conveyor line conveying the caps to the oil-filled bottles. A downward-sloping cap feeding mechanism uses the moving bottle to catch one side of the cap from the cap conveyor line (referred to as cap hooking), thus attaching the cap to the bottle neck before it is sent to a capping machine for sealing. In existing bottled cooking oil packaging processes, nitrogen gas is typically injected into the oil-filled bottles before cap hooking to protect the oil and prevent oxidation. For example, Chinese Patent Application No. 201610989580.0 discloses a nitrogen-filling star wheel device and method for adding nitrogen to bottled edible oil. This method achieves nitrogen filling of the bottle through the following operations: after the edible oil bottle is filled, during the process of the nitrogen-filling star wheel device conveying the bottle to the capping machine, a cam plate controls a slider to drive the nitrogen nozzle to move radially along a slide rail to above the bottle opening. Simultaneously, a pneumatic mechanical valve contacts the bottle and controls the gas path to output nitrogen for nitrogen filling. This existing nitrogen filling method is relatively complex, and the installation and maintenance costs are high, therefore, improvement is necessary. Summary of the Invention

[0003] The purpose of this invention is to provide a rapid nitrogen-filling and capping device for edible oil to solve the above-mentioned technical problems.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A rapid nitrogen-filling and capping device for edible oil includes a cap-feeding mechanism, which has a cap-feeding frame inclined downwards and an elongated cap-feeding slide inclined downwards along the cap-feeding frame. The end of the cap-feeding slide has a slide outlet. The device is characterized by further including a nitrogen-filling mechanism as a main nitrogen-filling mechanism. The nitrogen-filling mechanism includes a gas pipe support and a nitrogen-filling gas pipe. The end section of the nitrogen-filling gas pipe of the main nitrogen-filling mechanism is located below the cap-feeding frame near the end of the cap-feeding slide. The end section is fixedly connected to the cap-feeding frame via the gas pipe support. The end of the nitrogen-filling gas pipe has a nitrogen-filling nozzle arranged downwards.

[0006] In the optimized design, the nitrogen filling mechanism further includes a position sensor, which is located near the end section of the nitrogen filling pipe and away from the end of the cap delivery slide. Furthermore, the position sensor is fixedly connected to the pipe support via a sensor bracket.

[0007] In the optimized scheme, the nitrogen filling mechanism further includes a nitrogen filling control module and a nitrogen control valve. The nitrogen control valve is installed on the nitrogen filling pipe. The nitrogen filling control module is electrically connected to the nitrogen control valve and the position sensor respectively. The nitrogen filling control module controls the opening and closing of the nitrogen control valve according to the detection signal of the position sensor.

[0008] Furthermore, this utility model also includes another nitrogen filling mechanism as a secondary nitrogen filling mechanism. The nitrogen filling pipe and position sensor of the secondary nitrogen filling mechanism are located near the main nitrogen filling mechanism and away from the end of the cap delivery slide.

[0009] In the optimized design, a pre-pressing mechanism is also provided on the cap feeding frame above the end of the cap feeding slide. The pre-pressing mechanism includes a pressure plate, a vertical spring, and a longitudinal spring. One end of the pressure plate is rotatably mounted on the cap feeding frame via a pivot. The longitudinal spring is fixedly positioned above and close to the pressure plate. The vertical spring is fixedly positioned in the middle of the pressure plate, with its bottom contacting the pressure plate. The end of the pressure plate away from the pivot extends above the slide outlet of the cap feeding slide and has a downward-protruding arc-shaped protrusion. The pressure plate can be lifted by applying upward force from the end of the pressure plate away from the pivot, while the longitudinal and vertical springs are compressed and store force. After the longitudinal and vertical springs release the force, the end of the pressure plate away from the pivot can be quickly pressed down to reset.

[0010] Furthermore, the cap feeding frame has a top cover located above the end of the cap feeding slide, and the top cover has an opening at one end of the slide outlet of the cap feeding slide. The pre-pressing mechanism is installed on the top cover. The top cover has two symmetrically arranged first seats on both sides of the cap feeding slide, and the two ends of the rotating shaft move through the first seats to allow the pressure plate to be rotatably mounted above the top cover. The top cover has two symmetrically arranged second seats on both sides of the cap feeding slide, and the two ends of the longitudinal spring are movably connected to the two second seats to fix the longitudinal spring above the pressure plate. The top cover has a vertical shaft in the middle of the cap feeding slide, and the pressure plate has a long horizontal through-hole corresponding to the vertical shaft. The vertical shaft passes through the horizontal through-hole and has a stop at its top. The vertical spring is movably sleeved between the pressure plate and the stop on the vertical shaft.

[0011] Furthermore, the end of the pressure plate away from the rotating shaft has an upwardly curved arc-shaped tongue.

[0012] In the optimized solution, this utility model also includes a spiral bottle feeding mechanism, which is located below the cap feeding mechanism near the end of the cap feeding slide. It has a horizontally arranged spiral bottle feeding rod, the end of which is located below the nitrogen filling nozzle of the nitrogen filling pipe.

[0013] Furthermore, the present invention also includes a first star wheel, which is disposed between the end of the cap feeding mechanism and the end of the spiral bottle feeding rod. The first star wheel has a plurality of first slots evenly distributed in the circumferential direction. When the first star wheel rotates, the first slots can rotate sequentially to the end of the spiral bottle feeding rod and the end of the cap feeding slide.

[0014] Furthermore, the present invention also includes a capping device, which is located near the first star wheel and away from the end of the cap feeding mechanism. The capping device has a second star wheel, one side of which is located below one side of the first star wheel and has a plurality of second slots evenly distributed circumferentially. When the second star wheel rotates, the second slots can rotate to be close to the first slots vertically.

[0015] This utility model has the following substantial features and advancements:

[0016] 1. This utility model fixes the end section of the nitrogen filling tube to the cap feeding machine frame, which is very convenient for installation and maintenance. When the bottle height changes, the height of the slide outlet of the cap feeding machine frame can be adjusted to accommodate bottles of different heights. The nitrogen filling nozzle of the nitrogen filling tube can also be adjusted in height with the cap feeding machine frame. This operation is also very convenient, thus achieving the technical goal of simple and efficient nitrogen filling method, and reduced installation and maintenance costs. Furthermore, by using two nitrogen filling mechanisms (main and auxiliary) to fill the bottle twice, it is effectively ensured that nitrogen can fill the space above the edible oil in the bottle in a very short time, further enhancing the rapid and efficient nitrogen filling effect of bottled edible oil.

[0017] 2. This utility model further utilizes a position sensor, a nitrogen filling control module, and a nitrogen control valve to regulate the nitrogen filling status of the nitrogen filling pipe, ensuring that nitrogen filling occurs when the bottle moves to the position below the nitrogen filling nozzle, thereby ensuring efficient and stable nitrogen filling, improving nitrogen filling efficiency, and effectively controlling nitrogen filling costs.

[0018] 3. Furthermore, this utility model further uses a pre-compression mechanism to press the cap onto the bottle body after nitrogen filling, pre-compressing the cap onto the bottle mouth before capping, effectively preventing nitrogen leakage from the bottle body; furthermore, through the dual elastic pressure of the longitudinal spring and the vertical spring, sufficient downward pressure is generated on the cap, effectively ensuring the pre-compression effect of the cap.

[0019] 4. This utility model further utilizes a spiral bottle feeding mechanism and a second star wheel with a first star wheel and a capping device to continuously, stably, and efficiently transport the bottle body during the nitrogen filling, capping, and capping processes, ultimately completing the nitrogen filling and capping process of edible oil efficiently and reliably. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the edible oil rapid nitrogen filling and locking device of this utility model.

[0021] Figure 2 and Figure 3 These are schematic diagrams showing the operating status of the edible oil rapid nitrogen filling and capping device of this utility model.

[0022] Figure 4 and Figure 5 These are partial structural schematic diagrams of the edible oil rapid nitrogen filling and capping device of this utility model.

[0023] Figures 6 to 8 These are schematic diagrams of the pre-compression mechanism of this utility model.

[0024] Figure 9 This is a schematic diagram of the top cover of this utility model.

[0025] Figure 10 This is a schematic diagram of the structure of the pressure plate of this utility model.

[0026] Figure 11 This is a schematic diagram of another overall structure of the edible oil rapid nitrogen filling and locking device of this utility model. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Example 1

[0029] refer to Figures 1 to 10 A rapid nitrogen-filling and capping device for edible oil, comprising a cap-feeding mechanism and a nitrogen-filling mechanism.

[0030] The cap feeding mechanism has a cap feeding frame 1 that is inclined downward and a long strip cap feeding slide 11 that is inclined downward along the cap feeding frame 1. The end of the cap feeding slide 11 has a slide outlet 10.

[0031] The nitrogen filling mechanism includes a gas pipe support 21 and a nitrogen filling gas pipe 2. As the main nitrogen filling mechanism, the end section of the nitrogen filling gas pipe 2 is located below the cap feeding frame 1 near the end of the cap feeding slide 11. The end section is fixedly connected to the cap feeding frame 1 through the gas pipe support 21. The end of the nitrogen filling gas pipe 2 has a nitrogen filling nozzle 22 arranged downwards.

[0032] For details, please refer to the following: Figure 5The nitrogen filling pipe 2 of the main nitrogen filling mechanism is used to fill the bottle 71 with nitrogen, and the cap feeding slide 11 of the cap feeding mechanism is used to transport the cap 72 and hang the cap on the bottle 71 according to the existing technology. According to the bottle conveying direction, the nitrogen filling nozzle 22 of the main nitrogen filling mechanism can be specifically set in front of the bottle conveying direction, and the slide outlet 10 of the cap feeding mechanism can be specifically set in the rear of the bottle conveying direction. When the bottle 71 filled with edible oil moves to the station below the nitrogen filling nozzle 22, nitrogen is quickly filled into the bottle 71 by the nitrogen filling pipe 2. Then, it quickly moves to the next station, that is, the station below the slide outlet 10, for the cap hanging operation.

[0033] In the above structure, the end section of the nitrogen filling pipe 2 is fixedly installed on the cap feeding frame 1, which is very convenient for installation and maintenance. More importantly, when the height of the bottle 71 changes, the height of the slide outlet 10 of the cap feeding frame 1 can be adjusted to accommodate bottles 71 of different heights. The nitrogen filling nozzle 22 of the nitrogen filling pipe 2 can also be adjusted in height with the cap feeding frame 1. This operation is also very convenient, thus achieving the technical goal of simple and efficient nitrogen filling method, and reduced installation and maintenance costs.

[0034] Furthermore, the nitrogen filling mechanism in this embodiment also includes a position sensor 3, which is located near the end section of the nitrogen filling pipe 2 and away from the end of the cap delivery slide 11. See details... Figure 5 The position sensor 3 of the nitrogen filling mechanism is used to sense the bottle 71. After the position sensor 3 detects that the bottle 71 is moving, nitrogen can be sent out by the nitrogen filling pipe 2 after an interval of 5 seconds. Then, the nitrogen filling pipe 2 can be manually set to send out nitrogen for a certain period of time, such as 1 to 3 seconds. When the bottle 71 moves to the work position below the nitrogen filling nozzle 22, the nitrogen filling pipe 2 is sending out nitrogen and quickly filling the bottle 71 with nitrogen.

[0035] Furthermore, the position sensor 3 is fixedly connected to the tracheal support 21 via a sensor bracket 31. This makes the installation structure of the position sensor 3 very simple and convenient, and the height of the sensor bracket 31 and the tracheal support 21 can be adjusted along with the cap feeding frame 1, ensuring the reliability and stability of the detection of the bottle 71.

[0036] For further details, please refer to [link / reference]. Figure 4 The nitrogen filling mechanism also includes a nitrogen filling control module and a nitrogen control valve 23. The nitrogen control valve 23 is disposed on the nitrogen filling pipe 2. The nitrogen filling control module is electrically connected to the nitrogen control valve 23 and the position sensor 3 respectively. The nitrogen filling control module controls the opening and closing of the nitrogen control valve 23 according to the detection signal of the position sensor 3.

[0037] In the above structure, the nitrogen filling control module achieves the linkage between the position sensor 3 and the nitrogen filling opening and closing. The position sensor 3 detects the nitrogen, controlling the opening of the nitrogen control valve 23, and controls the closing of the nitrogen control valve 23 by controlling the duration of its opening. Specifically, when the position sensor 3 detects a bottle 71 approaching, the nitrogen filling control module opens the nitrogen control valve 23, allowing nitrogen to be delivered from the nitrogen filling pipe 2 to fill the bottle 71 that has moved to the position below the nitrogen filling nozzle 22. After filling is complete, the bottle 71 moves away from the position below the nitrogen filling nozzle 22, and the nitrogen filling control module closes the nitrogen control valve 23, stopping the nitrogen filling process.

[0038] For further details, please refer to [link / reference]. Figure 4 and Figure 5 The cap feeding frame 1 is also provided with a pre-pressing mechanism above the end of the cap feeding slide 11. The pre-pressing mechanism includes a pressure plate 4, a vertical spring 5, and a longitudinal spring 6. One end of the pressure plate 4 is rotatably mounted on the cap feeding frame 1 via a rotating shaft 41. The longitudinal spring 6 is fixedly set above the pressure plate 4 and close to the pressure plate 4. The vertical spring 5 is fixedly set in the middle of the pressure plate 4, with its bottom contacting the pressure plate 4. The end of the pressure plate 4 away from the rotating shaft 41 extends to the slide outlet 10 of the cap feeding slide 11 and has a downwardly protruding arc-shaped protrusion 42. The pressure plate 4 can be lifted by applying upward force from the end of the pressure plate 4 away from the rotating shaft 41, while the longitudinal spring 6 and the vertical spring 5 are compressed and stored. After the longitudinal spring 6 and the vertical spring 5 release the force, the end of the pressure plate 4 away from the rotating shaft 41 can be quickly pressed down and reset.

[0039] In the above structure, such as Figure 4 After the bottle 71 is filled with nitrogen, it moves to the cap-hanging station below the slide outlet 10 of the cap-feeding mechanism to begin the cap-hanging operation. Then, as... Figure 5 As shown, after the bottle cap 72 is attached to the mouth of the moving bottle 71, the bottle cap 72 continues to move with the bottle 71. Simultaneously, the top of the bottle cap 72 is lifted upwards by the arc-shaped protrusion 42 of the pressure plate 4, raising the end of the pressure plate 4 away from the rotating shaft 41. After the pressure plate 4 is lifted, the longitudinal spring 6 and the vertical spring 5 are compressed and store force, generating a downward elastic force on the pressure plate 4. Furthermore, under the dual elastic pressure of the longitudinal spring 6 and the vertical spring 5, the pressure plate 4 pre-presses the bottle cap 72 onto the bottle mouth, preventing leakage of nitrogen gas filled in the previous station. Finally, the bottle cap 72 continues to move with the bottle 71 and is freed from the obstruction of the pressure plate 4, entering the subsequent capping station.

[0040] In the above structure, both the longitudinal spring 6 and the vertical spring 5 are extension springs. The longitudinal spring 6 arches upward as the pressure plate 4 is raised, achieving elastic force storage, while the vertical spring 5 compresses upward as the pressure plate 4 is raised, achieving elastic force storage. Ultimately, through the dual elastic pressure of the longitudinal spring 6 and the vertical spring 5, the pressure plate 4 generates sufficient downward pressure on the bottle cap 72, causing the bottle cap 72 to be quickly and effectively pre-pressed onto the bottle mouth of the bottle body 71.

[0041] For further details, please refer to [link / reference]. Figures 6 to 10 The pre-pressing mechanism can be installed using the following specific structure: A top cover 12 is located above the end of the cap-feeding slide 11 on the cap-feeding frame 1. The top cover 12 has an opening 13 at one end of the slide outlet 10 of the cap-feeding slide 11. The pre-pressing mechanism is installed on the top cover 12. The top cover 12 has two symmetrically arranged first seats 121 on both sides corresponding to the cap-feeding slide 11. Both ends of the rotating shaft 41 pass through the first seats 121, allowing the pressure plate 4 to be rotatably positioned above the top cover 12. The top cover 12 corresponds to the cap-feeding slide... The top cover 12 has two symmetrically arranged second seats 122 on both sides. The two ends of the longitudinal spring 6 are movably connected to the two second seats 122, so that the longitudinal spring 6 is fixedly set above the pressure plate 4. The top cover 12 has a vertical shaft 123 in the middle of the cover feeding slide 11. The pressure plate 4 has a long horizontal through-hole 43 corresponding to the vertical shaft 123. The vertical shaft 123 passes through the horizontal through-hole 43 and has a stop 124 at its top. The vertical spring 5 is movably sleeved between the pressure plate 4 and the stop 124 on the vertical shaft 123.

[0042] In the above structure, the top cover opening 13 of the top cover 12 serves to prevent the bottle cap 72 from moving horizontally after being hung, thus avoiding obstruction of its movement. The pressure plate 4 is rotatably mounted via the first seat 121 on the top cover 12, the longitudinal spring 6 is fixedly mounted via the second seat 122 on the top cover 12, and the vertical spring 5 is fixedly mounted via the vertical shaft 123 on the top cover 12. Simultaneously, the bottom end of the vertical spring 5 abuts against both sides of the transverse through-hole 43 of the pressure plate 4, while the transverse through-hole 43 provides sufficient space to prevent obstruction of the pressure plate 4's movement when it is lifted. In this structure, the pre-pressing mechanism is integrally mounted on the top cover 12, resulting in a simple installation structure that facilitates daily maintenance.

[0043] Furthermore, the end of the pressure plate 4 away from the rotating shaft 41 has an upwardly curved arc-shaped tongue 40. In the above structure, the arc-shaped tongue 40 increases the contact area and contact time between the raised pressure plate 4 and the bottle cap 72, which can effectively ensure the pre-tightening effect of the pressure plate 4 on the bottle cap 72. At the same time, the arc-shaped tongue 40 can also avoid causing too much obstruction to the movement of the bottle body 71 and the bottle cap 72, ensuring the normal movement of the bottle body 71 after the cap is attached.

[0044] For further details, please refer to [link / reference]. Figures 1 to 3 This embodiment also includes a spiral bottle feeding mechanism, which is located below the cap feeding mechanism near the end of the cap feeding slide 11. The spiral bottle feeding mechanism has a laterally arranged spiral bottle feeding rod 7, the end of which is located below the nitrogen filling nozzle 22 of the nitrogen filling pipe 2. In the above structure, the spiral bottle feeding rod 7 forms multiple spaced bottle feeding stations through a spiral structure, with the conveying direction as shown by the arrows in the attached figure, thereby conveying the bottle body 71 in an orderly manner to the area below the nitrogen filling nozzle 22. After being filled with nitrogen, the bottle body 71 is then conveyed by the spiral bottle feeding rod 7 to the next conveying device, as described below, the first star wheel 8, for subsequent capping operations.

[0045] For further details, please refer to [link / reference]. Figures 1 to 3 This embodiment also includes a first star wheel 8, which is disposed between the end of the cap feeding mechanism and the end of the spiral bottle feeding rod 7. It has a plurality of first slots 81 evenly distributed along the circumference. When the first star wheel 8 rotates, the rotation direction is as shown by the arrow in the attached figure. The first slots 81 can rotate sequentially to the end of the spiral bottle feeding rod 7 and the end of the cap feeding slide 11 to engage with the spiral bottle feeding rod 7, so as to transport the nitrogen-filled bottle 71 to the pre-pressing mechanism and to the pre-pressing mechanism for capping.

[0046] For further details, please refer to [link / reference]. Figures 1 to 3 This embodiment also includes a capping device, which is located near the first star wheel 8 and away from the end of the cap feeding mechanism. The capping device has a second star wheel 9, one side of which is located below one side of the first star wheel 8. It has a plurality of second slots 91 evenly distributed circumferentially. When the second star wheel 9 rotates, the rotation direction is as shown by the arrow in the attached figure, opposite to the rotation direction of the first star wheel 8. The second slots 91 can rotate to be close to the first slots 81 vertically, for docking with the first star wheel 8, and conveying the capped bottle 71 to the capping device. The capping mechanism 90 on the capping device presses and locks the capped bottle 71, so that the cap 72 is locked onto the bottle 71. Finally, a subsequent conveying device (not shown in the figure) docks with the second star wheel 9 to deliver the capped bottle 71.

[0047] Example 2

[0048] For details, please refer to the following: Figure 11The difference between the edible oil rapid nitrogen filling and capping device in this embodiment and Embodiment 1 is that it also includes an additional nitrogen filling mechanism as a secondary nitrogen filling mechanism. This secondary nitrogen filling mechanism, like the main nitrogen filling mechanism, includes a nitrogen filling pipe 2, a position sensor 3, a nitrogen filling control module, and a nitrogen control valve 23. The nitrogen filling pipe 2 and position sensor 3 of the secondary nitrogen filling mechanism are located near the main nitrogen filling mechanism but away from the end of the cap delivery slide 11. The nitrogen filling control module and nitrogen control valve 23 of the secondary nitrogen filling mechanism are configured in the same way as those of the main nitrogen filling mechanism (not shown in the figure). The purpose of the secondary nitrogen filling mechanism is to pre-fill the bottle 71, which has already been filled with edible oil, with nitrogen before the main nitrogen filling mechanism. This, combined with the two nitrogen filling operations, effectively ensures that nitrogen can fill the space above the edible oil in the bottle 71 in a very short time, further enhancing the rapid and efficient nitrogen filling effect of the bottled edible oil.

Claims

1. A device for rapid nitrogen locking of edible oil covers, comprising a cover feeding mechanism, said cover feeding mechanism having a cover feeding frame (1) arranged obliquely downward, and a long strip-shaped cover feeding slide (11) arranged obliquely downward along the cover feeding frame (1), the end of the cover feeding slide (11) having a slide exit (10), characterized in that: It also includes a nitrogen filling mechanism as the main nitrogen filling mechanism. The nitrogen filling mechanism includes a gas pipe support (21) and a nitrogen filling pipe (2). The end section of the nitrogen filling pipe (2) of the main nitrogen filling mechanism is located below the cap feeding machine frame (1) and near the end of the cap feeding slide (11). The end section is fixedly connected to the cap feeding machine frame (1) through the gas pipe support (21). The end of the nitrogen filling pipe (2) has a nitrogen filling nozzle (22) arranged downward.

2. The edible oil rapid nitrogen filling and locking device according to claim 1, characterized in that: The nitrogen filling mechanism also includes a position sensor (3), which is located near the end section of the nitrogen filling pipe (2) and away from the end of the cap delivery slide (11).

3. The edible oil rapid nitrogen filling and locking device according to claim 2, characterized in that: The nitrogen filling mechanism also includes a nitrogen filling control module and a nitrogen control valve (23). The nitrogen control valve (23) is installed on the nitrogen filling pipe (2). The nitrogen filling control module is electrically connected to the nitrogen control valve (23) and the position sensor (3) respectively. The nitrogen filling control module controls the opening and closing of the nitrogen control valve (23) according to the detection signal of the position sensor (3).

4. The edible oil rapid nitrogen filling and locking device according to claim 3, characterized in that: It also includes another nitrogen filling mechanism as a secondary nitrogen filling mechanism, wherein the nitrogen filling pipe (2) and position sensor (3) of the secondary nitrogen filling mechanism are located near the main nitrogen filling mechanism and away from the end of the cap delivery slide (11).

5. The edible oil rapid nitrogen filling and locking device according to claim 1, characterized in that: The cap feeding frame (1) is also provided with a pre-pressing mechanism above the end of the cap feeding slide (11). The pre-pressing mechanism includes a pressure plate (4), a vertical spring (5), and a longitudinal spring (6). One end of the pressure plate (4) is rotatably mounted on the cap feeding frame (1) via a rotating shaft (41). The longitudinal spring (6) is fixedly set above the pressure plate (4) and close to the pressure plate (4). The vertical spring (5) is fixedly set in the middle of the pressure plate (4), and its bottom contacts the pressure plate. The pressure plate (4) extends from the end away from the rotating shaft (41) to the top of the slide outlet (10) of the cover delivery slide (11) and has a downwardly protruding arc-shaped protrusion (42); the pressure plate (4) can be lifted by applying upward force from the end away from the rotating shaft (41), while the longitudinal spring (6) and the vertical spring (5) are compressed and stored; after the longitudinal spring (6) and the vertical spring (5) release the force, the end of the pressure plate (4) away from the rotating shaft (41) can be quickly pressed down and reset.

6. The edible oil rapid nitrogen filling and locking device according to claim 5, characterized in that: The cap feeding frame (1) has a top cover (12) located above the end of the cap feeding slide (11). The top cover (12) has a top cover opening (13) at one end of the slide outlet (10) of the cap feeding slide (11). The pre-pressing mechanism is installed on the top cover (12). The top cover (12) has two symmetrically arranged first seats (121) on both sides of the cap feeding slide (11). The two ends of the rotating shaft (41) move through the first seats (121) so that the pressure plate (4) can be rotatably arranged above the top cover (12). The top cover (12) has two symmetrically arranged first seats (121) on both sides of the cap feeding slide (11). The two second seats (122) are movably connected at both ends of the longitudinal spring (6), so that the longitudinal spring (6) is fixedly set above the pressure plate (4); the top cover (12) has a vertical shaft (123) in the middle of the cover feeding slide (11), and the pressure plate (4) has a long horizontal through-hole (43) corresponding to the vertical shaft (123). The vertical shaft (123) passes through the horizontal through-hole (43) and has a stop (124) at its top. The vertical spring (5) is movably sleeved between the pressure plate (4) and the stop (124) on the vertical shaft (123).

7. The edible oil rapid nitrogen filling and locking device according to claim 5, characterized in that: The pressure plate (4) has an upwardly curved arc-shaped tongue (40) at the end away from the pivot (41).

8. A rapid nitrogen-filling and capping device for edible oil according to any one of claims 1 to 7, characterized in that: It also includes a spiral bottle feeding mechanism, which is located below the cap feeding mechanism near the end of the cap feeding slide (11) and has a horizontally arranged spiral bottle feeding rod (7). The end of the spiral bottle feeding rod (7) is located below the nitrogen filling nozzle (22) of the nitrogen filling pipe (2).

9. The edible oil rapid nitrogen filling and locking device according to claim 8, characterized in that: It also includes a first star wheel (8), which is located between the end of the cap feeding mechanism and the end of the spiral bottle feeding rod (7). It has a plurality of first slots (81) evenly distributed in the circumferential direction. When the first star wheel (8) rotates, the first slots (81) can rotate sequentially to the end of the spiral bottle feeding rod (7) and the end of the cap feeding slide (11).

10. The edible oil rapid nitrogen filling and locking device according to claim 9, characterized in that: It also includes a capping device, which is located near the first star wheel (8) and away from the end of the cap feeding mechanism. The capping device has a second star wheel (9), one side of which is located below one side of the first star wheel (8). It has a plurality of second slots (91) evenly distributed in the circumferential direction. When the second star wheel (9) rotates, the second slots (91) can rotate to be close to the first slots (81) vertically.

Images