Nitrogen charging structure of filling machine

Abstract

The utility model discloses a nitrogen charging structure of a filling machine. The nitrogen charging structure comprises a mounting plate, an air tap telescopic mechanism and an air charging mechanism, stand columns which are uniformly distributed are arranged on the front side face of the mounting plate, and an adjusting plate is connected between the front ends of the stand columns through bolts; the air tap telescopic mechanism comprises a fixing seat, an air cylinder, a connecting rod and an air tap assembly, the fixing seat is arranged on the front side face of the adjusting plate, the air cylinder is fixedly connected into the fixing seat, the lower end of the telescopic end of the air cylinder is fixedly connected with the connecting rod, the lower end of the connecting rod is connected with the air tap assembly through a bolt, and an air inlet of the air cylinder is connected with an external air pump; the inflating mechanism is arranged on the front side face of the mounting plate and the front end and the rear end of the air nozzle assembly, the air nozzle telescopic mechanism further comprises a limiting base and a limiting piece, and according to the nitrogen filling structure of the filling machine, through the air nozzles with the adjustable positions, the nitrogen filling structure can be conveniently aligned to the center positions of sealing plates on the two sides of a packaging bag, meanwhile, powder can be prevented from being sucked into a pipeline, and cleaning is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of filling machines, in particular to a nitrogen filling structure of a filling machine. Background Art

[0002] Filling machines are mainly a small category of packaging machines. From the perspective of material packaging, they can be divided into liquid filling machines, paste filling machines, powder filling machines and other types. Powder filling machines are suitable for quantitative packaging of powdered materials. They are not only exquisitely designed, but also have made revolutionary changes in the filling principle. They are one of the new replacement varieties of various manufacturers.

[0003] Powder filling machines are usually equipped with a nitrogen filling structure at the filling port to facilitate the long-term storage of powder. However, when installing the nitrogen filling structure, the air nozzle needs to be aligned with the center of the sealing plates on both sides to avoid the air nozzle from shifting when clamping the packaging bag. Depending on the type of filling machine, the nitrogen filling structure needs to add additional gaskets or change the position of the filling port of the filling machine to adapt to the position of the air nozzle, which is troublesome. At the same time, when the powder product is vacuumed, powder adheres to the inside of the air nozzle and the inside of the connecting pipe, which is difficult to clean. For this reason, we propose a nitrogen filling structure for a filling machine. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a nitrogen filling structure for a filling machine. Through an adjustable air nozzle, it is convenient to align the center position of the sealing plates on both sides of the packaging bag, and at the same time it can prevent powder from being sucked into the pipeline, which is convenient for cleaning and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nitrogen filling structure of a filling machine, comprising a mounting plate, a gas nozzle telescopic mechanism and a gas filling mechanism;

[0006] Mounting plate: The front side thereof is provided with evenly distributed upright posts, and the front ends of the upright posts are connected with an adjustment plate by bolts;

[0007] The air nozzle telescopic mechanism includes a fixed seat, a cylinder, a connecting rod and an air nozzle assembly. The front side of the adjustment plate is provided with a fixed seat, the interior of the fixed seat is fixedly connected with the cylinder, the lower end of the telescopic end of the cylinder is fixedly connected with the connecting rod, the lower end of the connecting rod is connected with the air nozzle assembly through bolts, and the air inlet of the cylinder is connected to an external air pump;

[0008] Inflation mechanism: It is arranged on the front side of the mounting plate and the front and rear ends of the air nozzle assembly. Through the adjustable air nozzle, it is convenient to align with the center position of the sealing plates on both sides of the packaging bag. At the same time, it can prevent the powder from being sucked into the pipeline, making it easy to clean.

[0009] Furthermore, the air nozzle telescopic mechanism also includes a limit seat and a limit plate. The front side of the adjustment plate is provided with a limit seat, and the front side of the limit seat is connected with evenly distributed limit plates by bolts. The middle part of the cylinder is fixedly connected between the limit seat and the limit plate to prevent the cylinder from shaking.

[0010] Furthermore, the air nozzle assembly includes an air chamber, an air nozzle and an inflation channel. The lower end of the connecting rod is connected to the air nozzle by bolts. The air chamber is provided inside the air nozzle, and the inflation channel is provided on the front side of the air chamber for easy disassembly.

[0011] Furthermore, the air nozzle assembly also includes a rubber diaphragm, and the rubber diaphragm is placed inside the inflation channel to achieve one-way gas circulation.

[0012] Furthermore, the inflation mechanism includes a vacuum pump, a hose and a connecting seat. The lower end of the front side of the mounting plate is fixedly connected to the vacuum pump, the rear side of the upper end of the air nozzle is connected to the connecting seat by bolts, the connecting seat is connected to the air chamber, a filter is provided on the rear side of the connecting seat, the rear end of the connecting seat and the air inlet of the vacuum pump are connected by a hose, and the input end of the vacuum pump is electrically connected to the output end of the filling machine controller to achieve vacuuming of the packaging bag.

[0013] Furthermore, the inflation mechanism also includes a solenoid valve, a hose 2 and a connecting seat 2. The upper end of the front side surface of the mounting plate is fixedly connected to the solenoid valve, the front side of the upper end of the air nozzle is connected to the connecting seat 2 by bolts, the connecting seat 2 is connected to the inflation channel, the front end of the connecting seat 2 and the air outlet of the solenoid valve are connected by a hose 1, the air inlet of the solenoid valve is connected to an external nitrogen device, and the input end of the solenoid valve is electrically connected to the output end of the filling machine controller to realize the charging of nitrogen.

[0014] Furthermore, a sealing gasket is arranged between the front side of the upper end of the air nozzle and the second connecting seat, and a through hole is arranged in the middle of the sealing gasket to achieve sealing.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the nitrogen filling structure of the filling machine has the following advantages:

[0016] 1. Install the nitrogen filling structure on the upper end of the filling port of the filling machine through the mounting plate. Adjust the relative distance between the mounting plate and the adjusting plate through the bolts so that the gas nozzle is aligned with the center position of the sealing plates on both sides of the filling port. The adjustment is quick and simple without adding additional accessories.

[0017] 2. When the filling machine is working, the filling machine controls the external air pump to start, the telescopic end of the cylinder extends, the connecting rod descends, the air nozzle descends to the inside of the packaging bag, the sealing plates on both sides of the filling port clamp the upper end of the packaging bag, and then the powder product is filled into the packaging bag. The vacuum pump is turned on, and the air inside the packaging bag is sucked into the air chamber through the air nozzle. The filter screen filters the powder product, and the rubber membrane plate prevents the powder product from entering the interior of the inflation channel. For maintenance, you only need to disassemble the connecting seat 2 and the connecting seat 1 to clean the air nozzle. There is no need to clean the inside of other parts, and maintenance is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model at an enlarged point A.

[0020] In the figure: 1 mounting plate, 2 adjusting plate, 3 column, 4 air nozzle telescopic mechanism, 41 fixing seat, 42 limiting seat, 43 limiting plate, 44 cylinder, 45 connecting rod, 46 air nozzle assembly, 461 air chamber, 462 air nozzle, 463 rubber diaphragm, 464 charging channel, 5 charging mechanism, 51 solenoid valve, 52 vacuum pump, 53 hose 1, 54 connecting seat 1, 55 hose 2, 56 connecting seat 2, 6 sealing gasket, 7 filter. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-2 , this embodiment provides a technical solution: a nitrogen filling structure of a filling machine, comprising a mounting plate 1, a gas nozzle telescopic mechanism 4 and a charging mechanism 5;

[0023] Mounting plate 1: The front side thereof is provided with evenly distributed upright posts 3, and the front ends of the upright posts 3 are connected with an adjusting plate 2 by bolts. The nitrogen filling structure is mounted on the upper end of the filling port of the filling machine through the mounting plate 1, and the relative distance between the mounting plate 1 and the adjusting plate 2 is adjusted by bolts so that the gas nozzle 462 is aligned with the center position of the sealing plates on both sides of the filling port;

[0024] The air nozzle telescopic mechanism 4 includes a fixed seat 41, a cylinder 44, a connecting rod 45 and an air nozzle assembly 46. The front side of the adjusting plate 2 is provided with a fixed seat 41, the interior of the fixed seat 41 is fixedly connected with the cylinder 44, the lower end of the telescopic end of the cylinder 44 is fixedly connected with the connecting rod 45, the lower end of the connecting rod 45 is connected with the air nozzle assembly 46 by bolts, the air inlet of the cylinder 44 is connected to the external air pump, the air nozzle telescopic mechanism 4 also includes a limit seat 42 and a limit plate 43, the front side of the adjusting plate 2 is provided with a limit seat 42, the limit seat 4 2 is connected with uniformly distributed limiting pieces 43 by bolts, the middle part of the cylinder 44 is fixedly connected between the limiting seat 42 and the limiting piece 43, the air nozzle assembly 46 includes an air chamber 461, an air nozzle 462 and an air charging channel 464, the lower end of the connecting rod 45 is connected with the air nozzle 462 by bolts, the air chamber 461 is arranged inside the air nozzle 462, the front side of the air chamber 461 is arranged with an air charging channel 464, the air nozzle assembly 46 also includes a rubber diaphragm 463, and the rubber diaphragm 463 is placed inside the air charging channel 464;

[0025] Inflating mechanism 5: It is arranged on the front side of the mounting plate 1 and the front and rear ends of the air nozzle assembly 46. The inflating mechanism 5 includes a vacuum pump 52, a hose 53 and a connecting seat 54. The lower end of the front side of the mounting plate 1 is fixedly connected to the vacuum pump 52. The rear side of the upper end of the air nozzle 462 is connected to the connecting seat 54 by bolts. The connecting seat 54 is connected to the air chamber 461. The rear side of the connecting seat 54 is provided with a filter screen 7. The rear end of the connecting seat 54 is connected to the air inlet of the vacuum pump 52 through a hose 53. The input end of the air pump 52 is electrically connected to the output end of the filling machine controller. The inflation mechanism 5 also includes a solenoid valve 51, a hose 55 and a connecting seat 56. The upper end of the front side of the mounting plate 1 is fixedly connected to the solenoid valve 51. The front side of the upper end of the air nozzle 462 is connected to the connecting seat 56 by bolts. The connecting seat 56 is connected to the inflation channel 464. The front end of the connecting seat 56 and the air outlet of the solenoid valve 51 are connected through a hose 53. The air inlet of the solenoid valve 51 is connected to an external nitrogen device. The input end is electrically connected to the output end of the filling machine controller, a sealing gasket 6 is arranged between the front side of the upper end of the air nozzle 462 and the connecting seat 56, and a through hole is arranged in the middle of the sealing gasket 6. When the filling machine is working, the filling machine controls the external air pump to start, the telescopic end of the cylinder 44 extends, the connecting rod 45 descends, the air nozzle 462 descends to the inside of the packaging bag, the sealing plates on both sides of the filling port clamp the upper end of the packaging bag, and then the powder product is filled in the packaging bag, the vacuum pump 52 is turned on, and the air inside the packaging bag is sucked out through the air nozzle 462. After entering the air chamber 461, the filter screen 7 filters the powder product, and the rubber diaphragm 463 prevents the powder product from entering the interior of the inflation channel 464. The air is then discharged through the hose 1 53 and the air outlet of the vacuum pump 52. After the air inside the packaging bag is discharged, the solenoid valve 51 is opened, and the nitrogen from the nitrogen device passes through the solenoid valve 51, the hose 2 55, the rubber diaphragm 463 and the air nozzle 462 in turn into the interior of the packaging bag. The opening time of the solenoid valve 51 is set by the controller of the filling machine to realize the quantitative filling of nitrogen into the packaging bag.

[0026] The working principle of the nitrogen filling structure of a filling machine provided by the utility model is as follows: the nitrogen filling structure is installed on the upper end of the filling port of the filling machine through the mounting plate 1, and the relative distance between the mounting plate 1 and the adjusting plate 2 is adjusted by bolts, so that the air nozzle 462 is aligned with the center position of the sealing plates on both sides of the filling port. When the filling machine is working, the filling machine controls the external air pump to start, the telescopic end of the cylinder 44 extends, the connecting rod 45 descends, and the air nozzle 462 descends to the inside of the packaging bag. The sealing plates on both sides of the filling port clamp the upper end of the packaging bag, and then the powder product is filled into the packaging bag, and the vacuum pump 52 is turned on. After the air inside the packaging bag is sucked into the air chamber 461 through the air nozzle 462, the filter screen 7 filters the powder product, and the rubber diaphragm 463 prevents the powder product from entering the interior of the inflation channel 464. The air is then discharged through the hose 1 53 and the air outlet of the vacuum pump 52. After the air inside the packaging bag is discharged, the solenoid valve 51 is opened, and the nitrogen from the nitrogen device enters the interior of the packaging bag through the solenoid valve 51, the hose 2 55, the rubber diaphragm 463 and the air nozzle 462 in turn. The opening time of the solenoid valve 51 is set by the controller of the filling machine to realize quantitative filling of nitrogen into the packaging bag.

[0027] It is worth noting that the solenoid valve 51 disclosed in the above embodiment can use a DSN solenoid air stop valve, and the vacuum pump 52 can use a G2 micro vacuum pump. The controller of the filling machine controls the external air pump, the solenoid valve 51 and the vacuum pump 52, all of which use methods commonly used in the prior art.

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A nitrogen filling structure for a filling machine, characterized in that: It comprises a mounting plate (1), an air nozzle telescopic mechanism (4) and an air charging mechanism (5); The mounting plate (1) is provided with evenly distributed upright posts (3) on its front side, and the front ends of the upright posts (3) are connected to the adjusting plate (2) by bolts; The air nozzle telescopic mechanism (4) comprises a fixed seat (41), a cylinder (44), a connecting rod (45) and an air nozzle assembly (46), wherein the front side of the adjustment plate (2) is provided with a fixed seat (41), the interior of the fixed seat (41) is fixedly connected to the cylinder (44), the lower end of the telescopic end of the cylinder (44) is fixedly connected to the connecting rod (45), the lower end of the connecting rod (45) is connected to the air nozzle assembly (46) via a bolt, and the air inlet of the cylinder (44) is connected to an external air pump; Inflating mechanism (5): It is arranged on the front side of the mounting plate (1) and the front and rear ends of the air nozzle assembly (46).

2. The nitrogen filling structure of a filling machine according to claim 1, characterized in that: The air nozzle telescopic mechanism (4) further comprises a limit seat (42) and a limit plate (43); the limit seat (42) is provided on the front side of the adjustment plate (2); the limit plates (43) are evenly distributed on the front side of the limit seat (42) via bolts; and the middle part of the cylinder (44) is fixedly connected between the limit seat (42) and the limit plate (43).

3. The nitrogen filling structure of a filling machine according to claim 1, characterized in that: The air nozzle assembly (46) comprises an air chamber (461), an air nozzle (462) and an inflation channel (464); the lower end of the connecting rod (45) is connected to the air nozzle (462) via a bolt; the air chamber (461) is provided inside the air nozzle (462); and the inflation channel (464) is provided on the front side of the air chamber (461).

4. The nitrogen filling structure of a filling machine according to claim 3, characterized in that: The air nozzle assembly (46) further comprises a rubber diaphragm (463), and the rubber diaphragm (463) is placed inside the inflation channel (464).

5. The nitrogen filling structure of a filling machine according to claim 3, characterized in that: The inflation mechanism (5) comprises a vacuum pump (52), a hose (53) and a connecting seat (54); the lower end of the front side of the mounting plate (1) is fixedly connected to the vacuum pump (52); the rear side of the upper end of the air nozzle (462) is connected to the connecting seat (54) via bolts; the connecting seat (54) is connected to the air chamber (461); a filter (7) is provided on the rear side of the connecting seat (54); the rear end of the connecting seat (54) and the air inlet of the vacuum pump (52) are connected via the hose (53); and the input end of the vacuum pump (52) is electrically connected to the output end of the filling machine controller.

6. The nitrogen filling structure of a filling machine according to claim 5, characterized in that: The inflation mechanism (5) further comprises a solenoid valve (51), a second hose (55) and a second connection seat (56); the upper end of the front side surface of the mounting plate (1) is fixedly connected to the solenoid valve (51); the front side of the upper end of the air nozzle (462) is connected to the second connection seat (56) via bolts; the second connection seat (56) is connected to the inflation channel (464); the front end of the second connection seat (56) and the air outlet of the solenoid valve (51) are connected via the first hose (53); the air inlet of the solenoid valve (51) is connected to an external nitrogen device; and the input end of the solenoid valve (51) is electrically connected to the output end of the filling machine controller.

7. The nitrogen filling structure of a filling machine according to claim 6, characterized in that: A sealing gasket (6) is provided between the front side of the upper end of the air nozzle (462) and the second connecting seat (56), and a through hole is provided in the middle of the sealing gasket (6).

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