Vacuumizing and nitrogen charging device for food packaging

Abstract

The utility model discloses a vacuumizing and nitrogen filling device for food packaging, which comprises a frame body, the frame body is connected with a vacuumizing and nitrogen filling piece for food packaging, and the vacuumizing and nitrogen filling piece comprises a conveying belt assembly, a nitrogen filling assembly and a nitrogen filling assembly, the processing part is installed at the top of the frame body and used for processing the opening end of the food packaging bag, the processing part comprises a hydraulic cylinder assembly vertically arranged at the top of the frame body, and an adjusting part is installed at the bottom of the hydraulic cylinder assembly. According to the vacuumizing and nitrogen filling device for food packaging, after the upper side of a packaging bag is sealed through the two sets of heat sealing pieces, the vacuum pump conducts vacuumizing treatment on the inner side of the packaging bag through the first guide pipe, the three-way valve and the material guide pipe, a filter screen at the bottom of the material guide pipe plays a filtering role, and after vacuumizing of the packaging bag is completed, the three-way valve is reversed, and the air pump is started; the air pump extracts outside nitrogen and injects the outside nitrogen into the packaging bag through the second guide pipe, the three-way valve and the material guide pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen flushing for food packaging, in particular to a vacuum nitrogen flushing device for food packaging. Background Art

[0002] During the food packaging production process, a corresponding vacuum nitrogen flushing device is required to process it. Reference is made to a vacuum nitrogen-filled packaging device with publication number CN220536116U, which includes a synchronous adjustment component, a gas adjustment component and a heat sealing component; a synchronous adjustment component for synchronously driving the two heat sealing components to move closer to or away from each other is installed on the conveyor belt frame, which can ensure that the packaging bag is immediately compressed after the gas adjustment component is extracted to prevent air from entering. As described in the above patent, when the existing vacuum nitrogen flushing device for food packaging is used, the height of the sealing end of most devices is difficult to adjust, which affects the adaptability of the device to packaging bags of different heights, and during the vacuuming process of the vacuuming end, it is easy to cause blockage due to the suction of food, affecting the subsequent vacuuming operation, and thus affecting the processing efficiency of the device on the packaging bag. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the utility model provides a vacuum nitrogen flushing device for food packaging, which solves the problems of the device's adaptability to packaging bags of different sizes, the difficulty in effectively handling blockage at the vacuum end of the device, and the impact on the device's processing efficiency.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A vacuum nitrogen flushing device for food packaging, comprising a frame, the frame being connected to a vacuum nitrogen flushing component for food packaging, the vacuum nitrogen flushing component comprising:

[0005] Conveyor belt assembly, installed on the upper side of the frame for adjusting the position of food packaging bags;

[0006] The control cabinet is provided with the control cabinet, and the control cabinet is provided with the control cabinet. The control cabinet is provided with the control cabinet. The control cabinet is provided with the control cabinet.

[0007] Preferably, the vacuum and nitrogen extraction component further comprises two groups of electric push rods respectively arranged on both sides of the frame, and limit plates are installed on the extended sides of the two groups of electric push rods close to the upper end of the conveyor belt assembly.

[0008] Preferably, the output end of the motor is coaxially fixedly connected to the bidirectional screw, the motor is a servo motor, and the first conduit and the second conduit are both bellows.

[0009] Preferably, the heat sealing part includes two groups of movable frames that are slidably connected to the connecting frame and threadedly connected to the bidirectional screw, and a limiting frame is provided on the lower side of the two groups of movable frames near the middle of the connecting frame, and the movable frame is horizontally slidably connected to a sliding rod near the lower end of the limiting frame, and the sliding rod is fixedly connected to a heat sealing plate near the middle of the connecting frame, and a spring fixedly connected to the movable frame is provided at the side end of the heat sealing plate.

[0010] Preferably, a semicircular groove is vertically provided in the middle of the limiting frame, the heat sealing plate is electrically connected to an external controller, and a stopper is installed at the end of the sliding rod away from the heat sealing plate.

[0011] Preferably, the air pump suction end is equipped with a suction pipe fixedly connected to an external nitrogen tank, and a filter is provided at the bottom inner side of the material guide pipe.

[0012] Beneficial effects

[0013] The utility model provides a vacuum nitrogen flushing device for food packaging. Compared with the existing technology, it has the following advantages:

[0014] (1) The vacuum nitrogen flushing device for food packaging is provided with a processing part in the device, and the height of the sealing adjustment part is adjusted by the hydraulic cylinder assembly so that it can adapt to the food packaging bag of corresponding height, thereby improving the adaptability of the device. After the two sets of heat sealing parts seal the upper side of the packaging bag, the vacuum pump vacuums the inside of the packaging bag through the first conduit, the three-way valve, and the material guide pipe, wherein the filter screen at the bottom of the material guide pipe plays a filtering role. After the packaging bag is vacuumed, the three-way valve is reversed and the air pump is turned on. The air pump draws nitrogen from the outside and injects it into the packaging bag through the second conduit, the three-way valve, and the material guide pipe, thereby achieving nitrogen flushing while avoiding blockage of the vacuum end to affect the subsequent vacuuming operation.

[0015] (2) The vacuum and nitrogen flushing device for food packaging sets a heat sealing part in the device, and cooperates with the motor and the bidirectional screw to make the two groups of heat sealing parts move toward the material guide tube. The heat sealing plate in the heat sealing part cooperates with the slide bar and the spring to contact the packaging bag and press it against the material guide tube. The limiting frame presses the upper edge of the packaging bag against the material guide tube, thereby improving the sealing effect and facilitating the subsequent vacuum and nitrogen flushing operations. After the vacuum and nitrogen flushing in the packaging bag are completed, the height of the material guide tube is adjusted by the cylinder to separate the material guide tube from the heat sealing plate. Under the action of the spring, the two groups of heat sealing plates press against the opening of the packaging bag, and the heat sealing plates are powered and heated to seal the packaging bag, thereby reducing the contact between the inside of the packaging bag and the outside world and improving the packaging effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 This is an enlarged view of the adjusting member of the present utility model;

[0018] Figure 3 This is an enlarged view of the heat-sealing member of the present invention;

[0019] Figure 4 It is an enlarged view of the processing part of the utility model.

[0020] In the figure: 1. frame; 2. conveyor belt assembly; 3. electric push rod; 4. limit plate; 5. processing part; 51. hydraulic cylinder assembly; 52. adjusting part; 521. connecting frame; 522. bidirectional screw; 523. heat sealing part; 5231. moving frame; 5232. limiting frame; 5233. sliding rod; 5234. spring; 5235. heat sealing plate; 524. motor; 53. processing part; 531. vacuum pump; 532. first conduit; 533. traction frame; 534. cylinder; 535. material guide pipe; 536. three-way valve; 537. air pump; 538. second conduit. DETAILED DESCRIPTION

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

[0022] See Figure 1-Figure 4 , the utility model provides the following two technical solutions:

[0023] The first embodiment: A vacuum nitrogen flushing device for food packaging, comprising a frame 1, the frame 1 is connected to a vacuum nitrogen flushing component for food packaging, the vacuum nitrogen flushing component comprising: a conveyor belt assembly 2, mounted on the upper side of the frame 1 for adjusting the position of the food packaging bag; a processing component 5, mounted on the top of the frame 1 for processing the open end of the food packaging bag, the processing component 5 comprising a hydraulic cylinder assembly 51 vertically arranged at the top of the frame 1, an adjusting component 52 mounted at the bottom of the hydraulic cylinder assembly 51, the adjusting component 52 comprising a connecting frame 521 arranged at the bottom of the hydraulic cylinder assembly 51, the upper side of which is connected to a bidirectional screw 522 for rotation along the X-axis, heat sealing components 523 for heat sealing the open end of the food packaging bag are connected on both sides of the bidirectional screw 522, a motor 524 for driving the bidirectional screw 522 to rotate is arranged on the left side of the connecting frame 521, and a processing component 53 for vacuuming and nitrogen flushing the food packaging bag is arranged at the middle end of the top of the frame 1;

[0024] The processing unit 53 includes a vacuum pump 531 and an air pump 537 respectively fixedly connected to the top of the frame 1. The vacuum pump 531 is provided with a first conduit 532 at the air extraction end, and the air pump 537 is provided with a second conduit 538 at the exhaust end. A cylinder 534 is vertically provided on the rear side of the middle of the connecting frame 521. A traction frame 533 is provided on the top of the cylinder 534. A guide pipe 535 slidably connected to the middle of the connecting frame 521 is installed in the middle of the traction frame 533. A three-way valve 536 fixedly connected to the first conduit 532 and the second conduit 538 is installed on the top of the guide pipe 535. The vacuum and nitrogen extraction unit also includes two groups of electric push rods 3 respectively provided on both sides of the frame 1. The extended sides of the two groups of electric push rods 3 are both provided with limit plates 4 near the upper end of the conveyor belt assembly 2.

[0025] The output end of the motor 524 is coaxially fixedly connected to the bidirectional screw 522. The motor 524 is a servo motor. The first conduit 532 and the second conduit 538 are both bellows. The air pump 537 is equipped with an air extraction pipe fixedly connected to the external nitrogen tank. The inner bottom of the guide pipe 535 is provided with a filter screen. The height of the sealing adjustment member 52 is adjusted by the hydraulic cylinder assembly 51 to adapt it to the food packaging bag of corresponding height. After the two sets of heat sealing members 523 seal the upper side of the packaging bag, the vacuum pump 531 vacuumizes the inside of the packaging bag through the first conduit 532, the three-way valve 536, and the guide pipe 535. The filter screen at the bottom of the guide pipe 535 acts as a filter. After the packaging bag is vacuumed, the three-way valve 536 is reversed and the air pump 537 is turned on. The air pump 537 extracts external nitrogen and injects it into the packaging bag through the second conduit 538, the three-way valve 536, and the guide pipe 535, thereby achieving nitrogen flushing and preventing blockage of the vacuum end.

[0026] The second embodiment differs from the first embodiment mainly in that:

[0027] The heat-sealing member 523 includes two sets of movable frames 5231 that are slidably connected to the connecting frame 521 and threadedly connected to the bidirectional screw 522. A limiting frame 5232 is provided on the lower side of the two sets of movable frames 5231 near the middle of the connecting frame 521. A sliding rod 5233 is horizontally slidably connected to the lower end of the movable frame 5231 near the lower end of the limiting frame 5232. The sliding rod 5233 is fixedly connected to a heat-sealing plate 5235 near the middle of the connecting frame 521. A spring 5234 is provided on the side end of the heat-sealing plate 5235 and fixedly connected to the movable frame 5231.

[0028] A semicircular groove matching the material guide tube 535 is vertically provided in the middle of the limiting frame 5232. The heat sealing plate 5235 is electrically connected to the external controller. A stopper is installed at the end of the sliding rod 5233 away from the heat sealing plate 5235. The motor 524 drives the two sets of heat sealing members 523 toward the material guide tube 535 through the bidirectional screw 522. The heat sealing plate 5235 first contacts the packaging bag and presses it against the material guide tube 535. Then, the limiting frame 5232 in the heat sealing member 523 presses the upper edge of the packaging bag against the material guide tube 535 through the semicircular groove in the middle thereof. During the process, the reaction force of the guide tube 535 pushes the heat sealing plate 5235 and the slide bar 5233 to slide, and the heat sealing plate 5235 compresses the spring 5234 to achieve sealing on the upper side of the packaging bag. After the vacuum and nitrogen flushing in the packaging bag are completed, the height of the guide tube 535 is adjusted by the cylinder 534 to separate the guide tube 535 from the heat sealing plate 5235. Under the action of the spring 5234, the two groups of heat sealing plates 5235 press against the opening of the packaging bag, and the heat sealing plates 5235 are powered and heated to seal the packaging bag.

[0029] At the same time, the contents not described in detail in this specification belong to the existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0030] During use, the user starts the conveyor belt assembly 2, and transfers the food packaging bag containing food and with the upper open end opened to the middle of the conveyor belt assembly 2 through the external loading piece. After the conveyor belt assembly 2 moves the food packaging bag to the lower side of the processing piece 5, the conveyor belt assembly 2 is closed, and the two sets of electric push rods 3 cooperate with the limit plates 4 to position and clamp the two sides of the food packaging bag. The hydraulic cylinder assembly 51 is started, and the hydraulic cylinder assembly 51 drives the adjustment piece 52, the traction frame 533, the cylinder 534, the guide pipe 535, and the three-way valve 536 to move downward, and the guide pipe 535 is inserted into the upper opening of the food packaging bag.

[0031] Close the hydraulic cylinder assembly 51. At this time, the two sets of heat sealing members 523 are located at both ends of the upper opening of the packaging bag. Start the motor 524. The motor 524 drives the two sets of heat sealing members 523 to move toward the guide tube 535 through the bidirectional screw 522. Finally, the two sets of heat sealing members 523 seal the upper side of the packaging bag. Start the vacuum pump 531. The vacuum pump 531 vacuumizes the inside of the packaging bag through the first conduit 532, the three-way valve 536, and the guide tube 535. The bottom of the guide tube 535 is The filter screen plays a filtering role. After the packaging bag is vacuumed, the three-way valve 536 is reversed and the air pump 537 is turned on. The air pump 537 draws nitrogen from the outside and injects it into the packaging bag through the second conduit 538, the three-way valve 536, and the guide pipe 535 to achieve nitrogen flushing and avoid blockage of the vacuum end. After the vacuuming and nitrogen flushing are completed, the height of the guide pipe 535 is adjusted by the cylinder 534, and the heat sealing member 523 is allowed to heat-seal the upper side of the food packaging bag to complete the sealing of the food packaging bag.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum nitrogen flushing device for food packaging, comprising a frame (1), characterized in that: The frame (1) is connected to a vacuum pumping and nitrogen flushing component for food packaging, and the vacuum pumping and nitrogen flushing component comprises: A conveyor belt assembly (2) is mounted on the upper side of the frame (1) and is used for adjusting the position of food packaging bags; A processing part (5) is installed on the top of the frame (1) for processing the open end of the food packaging bag. The processing part (5) includes a hydraulic cylinder assembly (51) vertically arranged on the top of the frame (1). An adjusting part (52) is installed at the bottom of the hydraulic cylinder assembly (51). The adjusting part (52) includes a connecting frame (521) arranged at the bottom of the hydraulic cylinder assembly (51). The upper side is connected to a bidirectional screw (522) that is rotatable along the X axis. Both sides of the bidirectional screw (522) are connected to heat sealing parts (523) for heat sealing the open end of the food packaging bag. A motor (524) for driving the bidirectional screw (522) to rotate is arranged on the left side of the connecting frame (521). A vacuum pump and nitrogen flushing machine for the food packaging bag is arranged at the middle end of the top of the frame (1). The processing part (53) includes a vacuum pump (531) and an air pump (537) respectively fixedly connected to the top of the frame (1); the vacuum pump (531) is provided with a first conduit (532) at the air extraction end; the air pump (537) is provided with a second conduit (538) at the exhaust end; a cylinder (534) is vertically provided at the rear side of the middle of the connecting frame (521); a traction frame (533) is provided on the top of the cylinder (534); a guide pipe (535) slidably connected to the middle of the connecting frame (521) is installed in the middle of the traction frame (533); a three-way valve (536) fixedly connected to the first conduit (532) and the second conduit (538) is installed on the top of the guide pipe (535).

2. A vacuum nitrogen flushing device for food packaging according to claim 1, characterized in that: The vacuum and nitrogen extraction component further comprises two groups of electric push rods (3) respectively arranged on both sides of the frame (1), and limit plates (4) are installed on the extended sides of the two groups of electric push rods (3) close to the upper end of the conveyor belt assembly (2).

3. The vacuum nitrogen flushing device for food packaging according to claim 1, characterized in that: The output end of the motor (524) is coaxially fixedly connected to the bidirectional screw (522); the motor (524) is a servo motor; and the first conduit (532) and the second conduit (538) are both bellows.

4. The vacuum nitrogen flushing device for food packaging according to claim 1, characterized in that: The heat sealing member (523) includes two groups of movable frames (5231) which are slidably connected to the connecting frame (521) and threadedly connected to the bidirectional screw (522); a limiting frame (5232) is provided on the lower side of the two groups of movable frames (5231) near the middle of the connecting frame (521); a sliding rod (5233) is horizontally slidably connected to the lower end of the movable frame (5231) near the limiting frame (5232); the sliding rod (5233) is fixedly connected to a heat sealing plate (5235) near the middle of the connecting frame (521); and a spring (5234) fixedly connected to the movable frame (5231) is provided on the side end of the heat sealing plate (5235).

5. The vacuum nitrogen flushing device for food packaging according to claim 4, characterized in that: A semicircular groove is vertically provided in the middle of the limiting frame (5232), the heat sealing plate (5235) is electrically connected to an external controller, and a stopper is installed at the end of the sliding rod (5233) away from the heat sealing plate (5235).

6. The vacuum nitrogen flushing device for food packaging according to claim 1, characterized in that: The air pump (537) is provided with an air extraction pipe fixedly connected to an external nitrogen tank at the air extraction end, and a filter is provided at the inner bottom of the material guide pipe (535).

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