Air exhaust nozzle lifting device of food vacuum packaging machine

Abstract

The utility model relates to the technical field of vacuum packaging, in particular to a food vacuum packaging machine air exhaust nozzle lifting device which comprises a top plate, the bottom end of the top plate is fixedly connected with supporting legs, a mounting groove is formed in the middle of the top end of the top plate, and the inner side of the mounting groove is fixedly connected with a vertically-arranged limiting rod. A clamping groove penetrating through the limiting rod is formed in the outer side of the limiting rod, a mounting plate is arranged on the inner side of the mounting groove, a limiting hole penetrating through the mounting plate is formed in the top end of the mounting plate, and a fixing plate which is vertically arranged and fixedly connected to the top end of the top plate is arranged on the outer side of the mounting groove. Through the arrangement of the supporting legs, the mounting grooves, the limiting rods, the clamping grooves, the mounting plates, the limiting holes, the fixing plates, the clamping plates, the air cylinders, the connecting plates, the round holes, the air tank, the air exhaust nozzle body, the bolts and the nuts, the air cylinders are more convenient to disassemble, the replacement speed of the damaged air cylinders can be increased, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum packaging, in particular to a lifting device for an air extraction nozzle of a food vacuum packaging machine. Background Technique

[0002] The air extraction nozzle of a food vacuum packaging machine is an important component of the vacuum packaging machine, which is used to extract the air in the packaging bag, so as to achieve the effect of vacuum packaging. The air extraction nozzle is usually made of corrosion-resistant and high-temperature-resistant materials, such as stainless steel or plastic. When using the vacuum packaging machine, the air extraction nozzle will cooperate with the vacuum pump to extract the air in the packaging bag, and then heat-seal the packaging bag to complete the vacuum packaging. The lifting device of the air extraction nozzle can adjust the height of the air extraction nozzle, so that the air extraction nozzle makes a reciprocating motion and quickly evacuates the packaging bag.

[0003] The lifting of the existing air extraction nozzle usually uses a cylinder as the lifting device. However, since the cylinder needs to operate for a long time, the possibility of its damage will be greatly increased, and the cylinder needs to be repaired and replaced frequently. The replacement of the existing cylinder is relatively inconvenient, and the air extraction nozzle and the vacuum pump cannot completely evacuate the packaging bag, and there will be residual air in the packaging bag. The oxygen and water vapor in the air will cause the preservation effect of the packaging bag to be poor. Therefore, a lifting device for an air extraction nozzle of a food vacuum packaging machine is proposed for the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a lifting device for an air extraction nozzle of a food vacuum packaging machine to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lifting device for an air extraction nozzle of a food vacuum packaging machine, including a top plate, a leg is fixedly connected to the bottom end of the top plate, an installation groove is provided in the middle of the top end of the top plate, a vertically arranged limiting rod is fixedly connected to the inner side of the installation groove, a clamping groove penetrating the limiting rod is provided on the outer side of the limiting rod, an installation plate is provided on the inner side of the installation groove, a limiting hole penetrating the installation plate is provided at the top end of the installation plate, a fixing plate vertically arranged and fixedly connected to the top end of the top plate is provided on the outer side of the installation groove, a clamping plate penetrating the fixing plate is slidably connected to one side of the fixing plate, a cylinder penetrating the top plate is fixedly connected to the bottom end of the installation plate, a connecting plate is fixedly connected to the bottom end of the cylinder, a round hole penetrating the connecting plate is provided at the top end of the connecting plate, an air tank with a hollow interior is provided below the connecting plate, an air extraction nozzle body vertically arranged and communicated with the air tank is fixedly connected to the bottom end of the air tank, a bolt is fixedly connected to the top end of the air tank, a nut is spirally connected to the outer side of the bolt, and a ventilation device is provided on the outer side of the air tank.

[0007] Preferably, the ventilation device includes an intake hose fixedly connected to the outside of the gas tank and communicating with the gas tank. One end of the intake hose away from the gas tank is fixedly connected to an intake solenoid valve communicating with the intake hose. One side of the intake hose is provided with an air extraction hose fixedly connected to the outside of the gas tank and communicating with the gas tank. One end of the air extraction hose away from the gas tank is fixedly connected to an air extraction solenoid valve communicating with the air extraction hose. One side of the fixed plate is provided with a controller fixedly connected to the top end of the top plate.

[0008] Preferably, the intake hose and the air extraction hose have the same shape and size, the intake solenoid valve and the air extraction solenoid valve have the same specifications, the intake solenoid valve and the air extraction solenoid valve are both fixedly connected to the top end of the top plate, and the intake solenoid valve, the air extraction solenoid valve and the cylinder are all electrically connected to the controller.

[0009] Preferably, the number of the legs is multiple, the legs are evenly distributed at the edge of the bottom end of the top plate, and the connection mode between the engaging groove and the engaging plate is snap connection.

[0010] Preferably, the bolts are located inside the round holes, the number of the bolts is multiple, and the bolts are arranged in an array on the top end of the gas tank.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. In the present utility model, through the arrangement of the legs, mounting grooves, limiting rods, engaging grooves, mounting plates, limiting holes, fixed plates, engaging plates, cylinders, connecting plates, round holes, gas tanks, air extraction nozzle bodies, bolts and nuts, the disassembly of the cylinder is more convenient, the replacement speed of the damaged cylinder can be accelerated, and the work efficiency can be improved. When the cylinder needs to be replaced, first unscrew the nut from the outside of the bolt at the top end of the gas tank, and then move the engaging plate inside the fixed plate to make the engaging plate slide inside the fixed plate until the engaging plate disengages from the engaging groove inside the limiting rod. Then, lift the mounting plate out of the mounting groove at the top end of the top plate, and the disassembly of the cylinder can be completed. Then, replace the new cylinder, pass the new cylinder through the top plate at the top end of the leg, make the mounting plate enter the mounting groove, and make the limiting rod insert into the limiting hole. Then, pick up the gas tank, insert the bolt at the top end of the gas tank into the round hole on the connecting plate, and screw the nut onto the outside of the bolt, and the installation of the cylinder can be completed;

[0013] 2. In the present utility model, through the arranged ventilation device, intake hose, intake solenoid valve, exhaust hose, exhaust solenoid valve and controller, the air remaining in the packaging bag can be reduced, and the freshness preservation effect of the packaging bag can be improved. Before use, the device is powered on. First, the intake solenoid valve is externally connected to a nitrogen cylinder, and the exhaust solenoid valve is externally connected to a vacuum pump. When it is necessary to evacuate the food packaging bag, the controller is adjusted to start the cylinder. The cylinder descends to drive the exhaust nozzle body to insert into the food packaging bag. Subsequently, the controller is adjusted to open the intake solenoid valve. When the intake solenoid valve is opened, the nitrogen in the nitrogen cylinder enters the inner side of the food packaging bag through the intake solenoid valve and the intake hose. The nitrogen displaces the air inside the food packaging bag. Then, the controller is adjusted to close the intake solenoid valve and open the exhaust solenoid valve, and the vacuum pump is started. The vacuum pump extracts the gas inside the food packaging bag through the exhaust solenoid valve and the exhaust hose, thereby completing the vacuum packaging of the food. Since nitrogen is an inert gas, the remaining nitrogen inside the food packaging bag can enhance the freshness preservation effect of the food packaging bag. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the cylinder structure of the present utility model;

[0016] Figure 3 It is a schematic diagram of the top plate structure of the present utility model.

[0017] In the figure: 1. Top plate; 2. Leg; 3. Installation groove; 4. Limit rod; 5. Engagement groove; 6. Installation plate; 7. Limit hole; 8. Fixed plate; 9. Engagement plate; 10. Cylinder; 11. Connecting plate; 12. Round hole; 13. Gas tank; 14. Exhaust nozzle body; 15. Bolt; 16. Nut; 17. Ventilation device; 1701. Intake hose; 1702. Intake solenoid valve; 1703. Exhaust hose; 1704. Exhaust solenoid valve; 1705. Controller. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary explanations, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0020] In addition, it should be noted that the use of words such as "first", "second", etc. to limit the components is only for the convenience of distinguishing the corresponding components. Without additional declarations, the above words have no special meanings. Therefore, it cannot be understood as a limitation to the protection scope of the present utility model.

[0021] Please refer to Figures 1-3 , the present utility model provides a technical solution:

[0022] An air extraction nozzle lifting device for a food vacuum packaging machine, comprising a top plate 1, a leg 2 is fixedly connected to the bottom end of the top plate 1, an installation groove 3 is provided in the middle of the top end of the top plate 1, a vertically arranged limiting rod 4 is fixedly connected to the inner side of the installation groove 3, a clamping groove 5 penetrating the limiting rod 4 is provided outside the limiting rod 4, an installation plate 6 is provided inside the installation groove 3, a limiting hole 7 penetrating the installation plate 6 is provided at the top end of the installation plate 6, a fixing plate 8 vertically arranged and fixedly connected to the top end of the top plate 1 is provided outside the installation groove 3, a clamping plate 9 penetrating the fixing plate 8 is slidably connected to one side of the fixing plate 8, a cylinder 10 penetrating the top plate 1 is fixedly connected to the bottom end of the installation plate 6, a connecting plate 11 is fixedly connected to the bottom end of the cylinder 10, a round hole 12 penetrating the connecting plate 11 is provided at the top end of the connecting plate 11, an air tank 13 with a hollow interior is provided below the connecting plate 11, an air extraction nozzle body 14 vertically arranged and communicating with the air tank 13 is fixedly connected to the bottom end of the air tank 13, a bolt 15 is fixedly connected to the top end of the air tank 13, a nut 16 is spirally connected to the outside of the bolt 15, and a ventilation device 17 is provided outside the air tank 13.

[0023] The ventilation device 17 includes an intake hose 1701 fixedly connected to the outside of the gas tank 13 and communicating with the gas tank 13. One end of the intake hose 1701 away from the gas tank 13 is fixedly connected to an intake solenoid valve 1702 communicating with the intake hose 1701. On one side of the intake hose 1701, there is an exhaust hose 1703 fixedly connected to the outside of the gas tank 13 and communicating with the gas tank 13. One end of the exhaust hose 1703 away from the gas tank 13 is fixedly connected to an exhaust solenoid valve 1704 communicating with the exhaust hose 1703. On one side of the fixing plate 8, there is a controller 1705 fixedly connected to the top end of the top plate 1. The ventilation device 17 can improve the fresh-keeping effect of food packaging bags. The intake hose 1701 and the exhaust hose 1703 are the same in shape and size. The intake solenoid valve 1702 and the exhaust solenoid valve 1704 are of the same specification. Both the intake solenoid valve 1702 and the exhaust solenoid valve 1704 are fixedly connected to the top end of the top plate 1. The intake solenoid valve 1702, the exhaust solenoid valve 1704 and the air cylinder 10 are all electrically connected to the controller 1705. The intake solenoid valve 1702 and the exhaust solenoid valve 1704 can fill the food packaging bag with nitrogen and evacuate the air. The number of the support legs 2 is multiple, and the support legs 2 are evenly distributed at the bottom edge of the top plate 1. The connection mode between the clamping groove 5 and the clamping plate 9 is clamping connection. The arrangement of the clamping groove 5 and the clamping plate 9 makes the disassembly and installation of the air cylinder 10 more convenient. The bolt 15 is located inside the round hole 12, and the number of the bolts 15 is multiple. The bolts 15 are arranged in an array on the top of the gas tank 13.

[0024] Workflow: When the cylinder 10 needs to be replaced, first unscrew the nut 16 from the outside of the bolt 15 at the top of the air tank 13. Then move the engaging plate 9 inside the fixed plate 8 so that the engaging plate 9 slides inside the fixed plate 8 until the engaging plate 9 disengages from the engaging groove 5 inside the limiting rod 4. Then lift the mounting plate 6 out of the inside of the mounting groove 3 at the top of the top plate 1 to complete the disassembly of the cylinder 10. Then replace it with a new cylinder 10. Pass the new cylinder 10 through the top plate 1 at the top of the leg 2 so that the mounting plate 6 enters the inside of the mounting groove 3 and insert the limiting rod 4 into the inside of the limiting hole 7. Then pick up the air tank 13, insert the bolt 15 at the top of the air tank 13 into the round hole 12 on the connecting plate 11, and screw the nut 16 onto the outside of the bolt 15 to complete the installation of the cylinder 10. Before use, power on the device. First, connect the intake solenoid valve 1702 to a nitrogen cylinder and the exhaust solenoid valve 1704 to a vacuum pump. When it is necessary to evacuate a food packaging bag, adjust the controller 1705 to start the cylinder 10. The cylinder 10 descends to drive the air extraction nozzle body 14 to insert into the food packaging bag. Then adjust the controller 1705 to open the intake solenoid valve 1702. The opening of the intake solenoid valve 1702 allows the nitrogen in the nitrogen cylinder to enter the inside of the food packaging bag through the intake solenoid valve 1702 and the intake hose 1701. The nitrogen displaces the air inside the food packaging bag. Then adjust the controller 1705 to close the intake solenoid valve 1702 and open the exhaust solenoid valve 1704, and start the vacuum pump. The vacuum pump extracts the gas inside the food packaging bag through the exhaust solenoid valve 1704 and the exhaust hose 1703. The ventilation device 17 can then complete the vacuum packaging of the food. Since nitrogen is an inert gas, the residual nitrogen inside the food packaging bag can enhance the freshness preservation effect of the food packaging bag.

[0025] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here.

[0026] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lifting device for the air extraction nozzle of a food vacuum packaging machine, comprising a top plate (1), characterized in that: The bottom end of the top plate (1) is fixedly connected with legs (2). In the middle of the top end of the top plate (1), there is an installation groove (3). Inside the installation groove (3), a vertically arranged limiting rod (4) is fixedly connected. Outside the limiting rod (4), there is a clamping groove (5) penetrating through the limiting rod (4). Inside the installation groove (3), there is an installation plate (6). At the top of the installation plate (6), there is a limiting hole (7) penetrating through the installation plate (6). Outside the installation groove (3), there is a vertically arranged fixing plate (8) fixedly connected to the top end of the top plate (1). On one side of the fixing plate (8), a clamping plate (9) penetrating through the fixing plate (8) is slidably connected. At the bottom end of the installation plate (6), a cylinder (10) penetrating through the top plate (1) is fixedly connected. At the bottom end of the cylinder (10), a connecting plate (11) is fixedly connected. At the top of the connecting plate (11), there is a round hole (12) penetrating through the connecting plate (11). Below the connecting plate (11), there is an air tank (13) with a hollow interior. At the bottom end of the air tank (13), a vertically arranged air extraction nozzle body (14) fixedly connected and communicating with the air tank (13) is provided. At the top end of the air tank (13), a bolt (15) is fixedly connected. Outside the bolt (15), a nut (16) is screwed. Outside the air tank (13), a ventilation device (17) is provided.

2. The air extraction nozzle lifting device of a food vacuum packaging machine according to claim 1, wherein: The ventilation device (17) includes an intake hose (1701) fixedly connected to the outside of the air tank (13) and communicating with the air tank (13). One end of the intake hose (1701) far from the air tank (13) is fixedly connected with an intake solenoid valve (1702) communicating with the intake hose (1701). On one side of the intake hose (1701), there is an air extraction hose (1703) fixedly connected to the outside of the air tank (13) and communicating with the air tank (13). One end of the air extraction hose (1703) far from the air tank (13) is fixedly connected with an air extraction solenoid valve (1704) communicating with the air extraction hose (1703). On one side of the fixing plate (8), there is a controller (1705) fixedly connected to the top end of the top plate (1).

3. The air extraction nozzle lifting device of a food vacuum packaging machine according to claim 2, characterized in that: The intake hose (1701) and the air extraction hose (1703) have the same shape and size. The intake solenoid valve (1702) and the air extraction solenoid valve (1704) have the same specifications. The intake solenoid valve (1702) and the air extraction solenoid valve (1704) are both fixedly connected to the top end of the top plate (1). The intake solenoid valve (1702), the air extraction solenoid valve (1704) and the cylinder (10) are all electrically connected to the controller (1705).

4. The air extraction nozzle lifting device of a food vacuum packaging machine according to claim 1, characterized in that: The number of the legs (2) is multiple. The legs (2) are evenly distributed at the edge of the bottom end of the top plate (1). The connection mode between the clamping groove (5) and the clamping plate (9) is clamping connection.

5. The air extraction nozzle lifting device of a food vacuum packaging machine according to claim 1, characterized in that: The bolt (15) is located inside the round hole (12). The number of the bolts (15) is multiple. The bolts (15) are arranged in an array at the top end of the air tank (13).

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