Air exhaust mechanism in stretch film packaging machine container

Abstract

The utility model provides an air exhaust mechanism in a stretch film packaging machine container, which relates to the technical field of air exhaust equipment and comprises an air exhaust base, a control box, an air exhaust pump, an air exhaust separation tank, a separation flow guide tank, a recovery pool, an impurity collection frame, a communicating pipe and a driving cylinder. One end of the top plane of the air exhaust base is fixedly provided with an air exhaust pump, and the air exhaust base at the position of the air exhaust pump is also fixedly provided with a control box; an air exhaust separation tank is vertically and upwards fixedly mounted on the air exhaust base on the rear side of the control box through a supporting rod, a vertical separation flow guide tank is fixedly mounted on one side of the air exhaust separation tank, and the upper end of the separation flow guide tank is lower than the lower end of the air exhaust separation tank. By means of the flaring structure of the first air suction pipe and the ingenious layout of the flow shielding plate, the air flow speed is effectively reduced, preliminary sedimentation of impurities is promoted, the air purification efficiency is remarkably improved, direct impact of the impurities on the air suction pump is avoided, the service life of the air suction pump is prolonged, and the failure rate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of air extraction equipment technology, and in particular to an air extraction mechanism inside a stretch film packaging machine container. Background Technology

[0002] In the widespread application of stretch film packaging machines, the air extraction process inside the container has always been a critical step. However, traditional air extraction mechanisms often face problems such as excessively high gas flow rates leading to ineffective sedimentation of impurities, susceptibility of the air pump to damage from impurity impacts, and low impurity handling efficiency. These problems not only affect the efficiency and purity of the packaging operation but also increase equipment maintenance costs and downtime, causing unnecessary disruption to the production process.

[0003] Specifically, when traditional vacuum pumping systems handle gases containing large amounts of impurities in containers, the excessively high gas flow rate often prevents the impurities from settling sufficiently. This results in some impurities being sucked into the pump, damaging the pump or affecting its performance. Furthermore, the impurity handling process largely relies on manual operation, which is not only inefficient but also prone to introducing secondary pollution. In addition, the lack of an effective liquid recycling mechanism often leads to resource waste and environmental pollution during the production process. Utility Model Content

[0004] This utility model relates to an air extraction mechanism inside a stretch film packaging machine container. By introducing innovative elements such as the flared structure of the first air extraction pipe and the layout of the baffle plate, the synergistic effect of the impurity riser frame and the filter disc, and the linkage mechanism between the drive cylinder and the impurity discharge frame, it not only effectively solves the problems existing in traditional air extraction mechanisms, but also significantly improves the automation level of the system, extends the service life of the equipment, reduces the maintenance burden, and realizes the effective recycling of resources.

[0005] This utility model provides a vacuuming mechanism for a stretch film packaging machine container, specifically including: a vacuuming base, a control box, a vacuum pump, a vacuum separation tank, a separation guide tank, a recovery tank, an impurity collection rack, a connecting pipe, and a drive cylinder; the vacuum pump is fixedly installed at one end of the top plane of the vacuuming base, and the control box is also fixedly installed on the vacuuming base at the location of the vacuum pump; the vacuum separation tank is vertically fixedly installed on the vacuuming base behind the control box via a support rod, and a vertical separation guide tank is fixedly installed on one side of the vacuum separation tank. The upper end of the separation guide tank is lower than the lower end of the suction separation tank, and the lower end of the suction separation tank is flush with the lower end of the separation guide tank. An elliptical recovery pool is fixedly installed on the suction base below the separation guide tank. The separation guide tank is located at one end of the recovery pool, and an impurity collection rack is fixedly installed upward at the other end of the recovery pool via a support rod. A connecting pipe with an internal cavity is provided between the suction separation tank and the separation guide tank. A drive cylinder is vertically fixedly installed on the suction base directly below the connecting pipe, and the drive cylinder is located on the outer side wall of the recovery pool.

[0006] Optionally, the upper middle part of the vacuum separation tank is provided with a first vacuum pipe, and the other end of the first vacuum pipe is connected to the suction end of the stretch film packaging machine. The part of the first vacuum pipe located in the inner cavity of the vacuum separation tank has a flared structure that is narrow at the top and wide at the bottom.

[0007] The second suction pipe is fixedly installed on one side at the upper middle part of the suction separation tank. The port of the second suction pipe in the inner cavity of the suction separation tank has a downward oblique cut structure. The other end of the second suction pipe is connected to the suction end of the suction pump.

[0008] An arc-shaped baffle is provided in the inner cavity of the gas extraction separator, located between the inner ends of the first and second gas extraction pipes. The baffle is inclined, with its lower end away from the second gas extraction pipe and close to the connecting pipe, and its concave surface facing the first gas extraction pipe.

[0009] The lower end of the inner cavity of the gas extraction separator is vertically provided with an impurity riser frame. The upper end of the impurity riser frame is fixed with an impurity riser filter plate inclined towards the connecting pipe. The impurity riser filter plate has strip-shaped through holes facing the connecting pipe. The lower end of the impurity riser frame is provided with a horizontal impurity riser base. The edge of the impurity riser base fits into the side wall of the inner cavity of the gas extraction separator. When the lower end of the impurity riser base contacts the bottom of the inner cavity of the gas extraction separator, the lower end of the impurity riser filter plate is aligned with the lower end edge of the connecting pipe.

[0010] Optionally, the lower end of the separation guide tank is fixedly provided with an impurity discharge pipe facing the impurity collection rack;

[0011] A gas pipe is provided at the upper middle part of the separation guide tank;

[0012] The lower end of the inner cavity of the separation guide tank is vertically slidably equipped with an impurity discharge rack. The upper end of the impurity discharge rack is equipped with a thickened upper piston sealing plate, and the lower end of the impurity discharge rack is fixedly equipped with a lower piston sealing plate. The upper end of the lower piston sealing plate is an inclined surface structure that slopes towards the impurity discharge pipe. The bottom plate of the separation guide tank is vertically equipped with a liquid extraction pipe and a circulation liquid replenishment pipe. The lower end of the liquid extraction pipe extends downward into the recovery tank, and the other end of the circulation liquid replenishment pipe extends to the position between the impurity rise filter plate and the impurity rise base plate in the gas extraction separation tank. When the lower end of the lower piston sealing plate contacts the bottom surface of the inner cavity of the separation guide tank, the upper piston sealing plate closes the connecting pipe.

[0013] Optionally, both the recovery tank and the vacuum separation tank contain non-volatile liquids, with the liquid level in the vacuum separation tank reaching the lower end of the connecting pipe.

[0014] Optionally, a horizontal drive arm is vertically fixedly connected to the upper end of the piston rod of the drive cylinder. The left and right ends of the drive arm are vertically fixedly connected to the lower ends of the shafts of the impurity riser frame and the impurity discharge frame, respectively. When the piston rod of the drive cylinder pushes upward, the impurity riser frame and the impurity discharge frame move upward synchronously. The liquid in the suction separation tank overflows to the connecting pipe under the lifting of the impurity riser chassis. Part of the liquid lifted in the suction separation tank carries the impurities on the impurity riser filter plate and flows through the connecting pipe to the separation guide tank. The upper piston seal plate of the tank is located above the connecting pipe, and the lower end of the lower piston seal plate is aligned with the lower end of the impurity discharge pipe. The liquid containing impurities from the vacuum separation tank is discharged to the impurity collection rack through the impurity discharge pipe. At the same time, the lower piston seal plate moves upward to create negative pressure, which draws the corresponding volume of liquid discharged from the recovery pool into the separation guide tank through the liquid extraction pipe. When the piston rod of the drive cylinder is reset, the lower piston seal plate moves downward, and the compressed and sucked liquid is replenished into the vacuum separation tank through the circulation replenishment pipe, and the liquid level in the vacuum separation tank is restored.

[0015] Optionally, the impurity collection rack is provided with an impurity collection tray that slides away from the impurity discharge pipe. The left and right side walls of the impurity collection tray are respectively provided with two parallel side guide grooves, and the corresponding positions on the impurity collection rack are provided with corresponding side guide rails.

[0016] The impurity collection tray has a V-shaped inner cavity. A reflux filter hole is provided on the side wall of the impurity collection tray near the impurity discharge pipe. The recovery tank is located directly below the reflux filter hole. The impurity collection tray receives the discharged impurity mixture and the liquid flows back to the recovery tank. The remaining impurities are taken out from the side of the impurity collection tray away from the impurity discharge pipe. A handle hole for easy pulling is provided at the outer edge of the impurity collection tray.

[0017] Optionally, a conveying wheel is horizontally and rotatably mounted in the middle of the connecting pipe. The conveying wheel has six blades. A pneumatic box is provided on one side of the connecting pipe. A pneumatic wheel is rotatably mounted in the connecting pipe. The pneumatic wheel is fixedly connected to the rotating shaft of the conveying wheel. A pneumatic inlet pipe is vertically provided on the pneumatic box near the side of the gas extraction separator. The other end of the pneumatic inlet pipe is fixedly connected to the end of the air-connecting pipe. A pneumatic outlet pipe is vertically provided on the bottom of the pneumatic box near the side of the separation guide tank. When the upper piston sealing plate moves upward, the air in the upper part of the inner cavity of the separation guide tank is compressed and sprayed into the pneumatic box through the air-connecting pipe, which blows the pneumatic wheel to rotate. The conveying wheel rotates accordingly and conveys the impurity mixture on one side of the gas extraction separator to the side of the separation guide tank.

[0018] This utility model provides a vacuum mechanism for the container of a stretch film packaging machine, which has the following beneficial effects:

[0019] Firstly, the flared structure of the first suction pipe and the ingenious layout of the baffle plate not only effectively slow down the gas flow rate and promote the initial settling of impurities, but also significantly improve the efficiency of gas purification, avoid the direct impact of impurities on the suction pump, thereby extending the service life of the suction pump and reducing the failure rate.

[0020] Secondly, the synergistic effect of the impurity riser frame and the impurity riser filter disc enables efficient collection and filtration of settled impurities, ensuring the purity of the extracted air and facilitating subsequent impurity treatment. Furthermore, the linkage mechanism between the drive cylinder and the impurity discharge frame elevates the automatic discharge of impurities to a new level, reducing the burden of manual cleaning and increasing the overall automation of the operation.

[0021] Furthermore, the V-shaped structure design and sliding cleaning function of the impurity collection tray further enhance the convenience and efficiency of impurity handling, making cleaning work more convenient. Simultaneously, the introduction of a recovery tank and a circulating liquid replenishment system enables liquid recycling, saving resources and reducing environmental pollution.

[0022] Of particular note is the compressed air drive mechanism inside the separation guide tank, which not only enhances the fluidity of the impurity mixture in the connecting pipe, ensuring that the impurities can smoothly enter the separation guide tank, but also adds a dynamic balance and stability to the entire system through the rotation of the pneumatic wheel.

[0023] In summary, the air extraction mechanism of this utility model not only improves the efficiency and cleanliness of packaging operations, but also significantly enhances the automation level of the system, extends the service life of the equipment, reduces the maintenance burden, and realizes the effective recycling of resources. Its remarkable technical effects undoubtedly inject new vitality into the development of the stretch film packaging machine industry. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0025] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0026] In the attached diagram:

[0027] Figure 1 A first axial view structural schematic diagram of the present invention is shown;

[0028] Figure 2 A schematic diagram of the second axial view structure of this utility model is shown;

[0029] Figure 3This diagram shows a semi-sectional axial view of the extraction separator and the separation guide tank of this utility model.

[0030] Figure 4 This shows an axial view of the impurity riser frame and impurity discharge frame in the upward moving state of this utility model;

[0031] Figure 5 This shows a schematic diagram of the impurity upflow frame structure of the present invention.

[0032] Figure 6 This shows a schematic diagram of the axial view of the impurity discharge rack section of this utility model;

[0033] Figure 7 This invention presents a schematic diagram of the axial view of the connecting pipe portion.

[0034] Figure 8 The diagram shows a partially disassembled axial view of the impurity collection rack of this invention.

[0035] List of reference numerals

[0036] 1. Vacuum base;

[0037] 2. Control box;

[0038] 3. Air pump;

[0039] 4. Gas extraction separator; 401. First gas extraction pipe; 402. Second gas extraction pipe; 403. Impurity riser frame; 4031. Impurity riser filter plate; 4032. Impurity riser base plate; 404. Baffle plate;

[0040] 5. Separation guide tank; 501. Impurity discharge pipe; 502. Gas venting pipe; 503. Impurity discharge rack; 5031. Upper piston seal plate; 5032. Lower piston seal plate; 504. Liquid extraction pipe; 505. Circulation replenishment pipe;

[0041] 6. Recycling pool;

[0042] 7. Impurity collection rack; 701. Impurity collection tray; 7011. Return filter hole; 7012. Handle hole; 7013. Side guide rail; 702. Side guide groove;

[0043] 8. Connecting pipe; 801. Feeding wheel; 802. Pneumatic box; 8021. Pneumatic inlet pipe; 8022. Pneumatic outlet pipe; 803. Pneumatic wheel;

[0044] 9. Drive cylinder; 901. Drive connecting arm. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0046] Example 1: Please refer to Figures 1 to 8 :

[0047] This utility model discloses a vacuuming mechanism inside a stretch film packaging machine container, comprising: a vacuuming base 1, a control box 2, a vacuum pump 3, a vacuum separation tank 4, a separation guide tank 5, a recovery tank 6, an impurity collection rack 7, a connecting pipe 8, and a drive cylinder 9; the vacuum pump 3 is fixedly installed at one end of the top plane of the vacuuming base 1, and the control box 2 is also fixedly installed on the vacuuming base 1 at the location of the vacuum pump 3; the vacuum separation tank 4 is vertically fixedly installed on the vacuuming base 1 behind the control box 2 via a support rod, and a vertical separation guide tank 5 is fixedly installed on one side of the vacuum separation tank 4. The upper end of the separation guide tank 5 is lower than the lower end of the suction separation tank 4, and the lower end of the suction separation tank 4 is flush with the lower end of the separation guide tank 5. An elliptical recovery tank 6 is fixedly provided on the suction base 1 below the separation guide tank 5. The separation guide tank 5 is located at one end of the recovery tank 6, and the other end of the recovery tank 6 is fixedly provided with an impurity collection rack 7 by a support rod. A connecting pipe 8 is provided between the suction separation tank 4 and the separation guide tank 5, and the inner cavity is connected. A drive cylinder 9 is vertically fixedly installed on the suction base 1 directly below the connecting pipe 8. The drive cylinder 9 is located on the outer side wall of the recovery tank 6.

[0048] Among them, the upper middle part of the vacuum separation tank 4 is provided with a first vacuum pipe 401, the other end of the first vacuum pipe 401 is connected to the suction end of the stretch film packaging machine, and the part of the first vacuum pipe 401 located in the inner cavity of the vacuum separation tank 4 has a flared structure that is narrow at the top and wide at the bottom.

[0049] A second suction pipe 402 is fixedly installed on one side at the upper middle part of the suction separation tank 4. The port of the second suction pipe 402 located in the inner cavity of the suction separation tank 4 has a downward oblique cut structure. The other end of the second suction pipe 402 is connected to the suction end of the suction pump 3.

[0050] An arc-shaped baffle plate 404 is provided in the inner cavity of the air extraction separator 4, located between the inner end of the first air extraction pipe 401 and the inner end of the second air extraction pipe 402. The baffle plate 404 is inclined, with its lower end away from the second air extraction pipe 402 and close to the connecting pipe 8, and its concave surface facing the first air extraction pipe 401.

[0051] The lower end of the inner cavity of the gas separation tank 4 is provided with an impurity riser frame 403. The upper end of the impurity riser frame 403 is fixed with an impurity riser filter plate 4031 that is inclined towards the connecting pipe 8. The impurity riser filter plate 4031 is provided with a strip-shaped through hole facing the connecting pipe 8. The lower end of the impurity riser frame 403 is provided with a horizontal impurity riser base plate 4032. The edge of the impurity riser base plate 4032 fits with the side wall of the inner cavity of the gas separation tank 4. When the lower end of the impurity riser base plate 4032 contacts the bottom of the inner cavity of the gas separation tank 4, the lower end of the impurity riser filter plate 4031 is flush with the lower port edge of the connecting pipe 8.

[0052] Among them, the lower end of the separation guide tank 5 is fixedly provided with an impurity discharge pipe 501 facing the impurity collection rack 7;

[0053] A gas pipe 502 is provided at the upper middle part of the separation guide tank 5;

[0054] The lower end of the inner cavity of the separation guide tank 5 is vertically slidably provided with an impurity discharge rack 503. The upper end of the impurity discharge rack 503 is provided with a thickened upper piston sealing plate 5031. The lower end of the impurity discharge rack 503 is fixedly provided with a lower piston sealing plate 5032. The upper end of the lower piston sealing plate 5032 is a sloping structure inclined towards the impurity discharge pipe 501. The bottom plate of the separation guide tank 5 is vertically provided with a liquid extraction pipe 504 and a circulation replenishment pipe 505. The lower end of the liquid extraction pipe 504 extends downward into the recovery tank 6. The other end of the circulation replenishment pipe 505 extends to the position between the impurity riser filter plate 4031 and the impurity riser base plate 4032 in the gas extraction separation tank 4. When the lower end of the lower piston sealing plate 5032 contacts the bottom surface of the inner cavity of the separation guide tank 5, the upper piston sealing plate 5031 closes the connecting pipe 8.

[0055] Both the recovery tank 6 and the vacuum separation tank 4 contain non-volatile liquids, with the liquid level in the vacuum separation tank 4 reaching the lower end of the connecting pipe 8.

[0056] The piston rod of the drive cylinder 9 is vertically fixed to a horizontal drive arm 901. The left and right ends of the drive arm 901 are vertically fixed to the lower ends of the shafts of the impurity riser frame 403 and the impurity discharge frame 503, respectively. When the piston rod of the drive cylinder 9 pushes upward, the impurity riser frame 403 and the impurity discharge frame 503 move upward simultaneously. The liquid in the extraction separation tank 4 is lifted by the impurity riser chassis 4032 and flows to the connecting pipe 8. A portion of the liquid lifted from the extraction separation tank 4, carrying impurities from the impurity riser filter plate 4031, flows through the connecting pipe 8 to the separation guide tank 5. The separation guide tank 5... The upper piston sealing plate 5031 is positioned above the connecting pipe 8, and the lower end of the lower piston sealing plate 5032 is aligned with the lower port edge of the impurity discharge pipe 501. The liquid containing impurities from the vacuum separation tank 4 is discharged to the impurity collection rack 7 through the impurity discharge pipe 501. At the same time, the lower piston sealing plate 5032 moves upward to create negative pressure, which draws the corresponding volume of liquid discharged from the recovery pool 6 through the liquid extraction pipe 504 and enters the separation guide tank 5. When the piston rod of the drive cylinder 9 is reset, the lower piston sealing plate 5032 moves downward, and the compressed and sucked liquid is replenished into the vacuum separation tank 4 through the circulation replenishment pipe 505, and the liquid level in the vacuum separation tank 4 is restored.

[0057] Among them, the impurity collection rack 7 is provided with an impurity collection tray 701 that slides away from the impurity discharge pipe 501. The left and right side walls of the impurity collection tray 701 are respectively provided with two parallel side guide grooves 702, and the corresponding positions on the impurity collection rack 7 are provided with corresponding side guide rails 7013.

[0058] The impurity collection tray 701 has a V-shaped inner cavity. The side wall of the impurity collection tray 701 near the impurity discharge pipe 501 is provided with a return filter hole 7011. The recovery tank 6 is located directly below the return filter hole 7011. The impurity collection tray 701 receives the discharged impurity mixture, and the liquid flows back to the recovery tank 6. The remaining impurities are taken out from the side of the impurity collection tray 701 away from the impurity discharge pipe 501. The outer edge of the impurity collection tray 701 is provided with a handle hole 7012 for easy pulling.

[0059] In Example 2, based on Example 1, a horizontally rotating feeding wheel 801 is installed in the middle of the connecting pipe 8. The feeding wheel 801 has six blades. A pneumatic box 802 is provided on one side of the connecting pipe 8. A pneumatic wheel 803 is rotatably installed in the connecting pipe 8. The pneumatic wheel 803 is fixedly connected to the rotating shaft of the feeding wheel 801. A pneumatic inlet pipe 8021 is vertically provided on the pneumatic box 802 near the side of the pneumatic wheel 803 close to the air extraction separator 4. The other end is fixedly connected to the end of the air pipe 502, and the bottom of the pneumatic box 802 is vertically provided with a pneumatic outlet pipe 8022 on the side near the separation guide tank 5. When the upper piston sealing plate 5031 moves upward, the air in the upper part of the inner cavity of the separation guide tank 5 is compressed and sprayed into the pneumatic box 802 through the air pipe 502, which blows the pneumatic wheel 803 to rotate. The conveying wheel 801 rotates accordingly and conveys the impurity mixture on the side of the vacuum separation tank 4 to the side of the separation guide tank 5.

[0060] The working principle of this embodiment:

[0061] When the stretch film packaging machine starts and evacuation of the container is required, the gas first enters the evacuation separation tank 4 through the first evacuation pipe 401. The flared design of the first evacuation pipe 401 helps to slow down the gas flow rate and promotes the initial settling of impurities carried in the gas. Subsequently, the gas rises in the evacuation separation tank 4 and encounters the inclined baffle 404, whose concave surface faces the first evacuation pipe 401, further guiding the gas flow and promoting the settling of impurities, preventing impurities from entering the evacuation pump 3 through the second evacuation pipe 402.

[0062] At this time, the vacuum pump 3, through the second vacuum pipe 402, utilizes its highly efficient suction capacity at its oblique end to extract the preliminarily purified gas for subsequent processing or discharge. Meanwhile, the impurities that settle at the bottom of the vacuum separator 4 are collected by the impurity upflow frame 403 and the impurity upflow filter plate 4031 on it.

[0063] As the suction process continues, the drive cylinder 9 starts, and its piston rod drives the impurity riser frame 403 and the impurity discharge frame 503 to move upward synchronously via the drive connecting arm 901. This action causes the liquid in the suction separation tank 4 to be raised, carrying the impurities on the impurity riser filter plate 4031, and flowing into the separation guide tank 5 through the connecting pipe 8. During this process, the upper piston sealing plate 5031 of the impurity discharge frame 503 seals the upper end of the connecting pipe 8 to prevent gas backflow, while the lower piston sealing plate 5032 opens the impurity discharge pipe 501, allowing the liquid containing impurities to be smoothly discharged into the impurity collection tray 701 on the impurity collection rack 7.

[0064] The impurity collection tray 701 is designed with a V-shaped structure to facilitate the collection and separation of the impurity mixture. The liquid in the mixture flows back to the recovery tank 6 for recycling through the return filter hole 7011, while the impurities are trapped in the tray and can eventually be removed from the side away from the impurity discharge pipe 501. The sliding design of the impurity collection tray 701 and the setting of the handle hole 7012 make it easy for users to pull out and clean the impurities.

[0065] Meanwhile, inside the separating guide tank 5, as the upper piston sealing plate 5031 closes, the air inside is compressed and enters the pneumatic box 802 through the air duct 502. This compressed air drives the pneumatic wheel 803 to rotate, which in turn drives the conveyor wheel 801 to rotate. The rotation of the conveyor wheel 801 effectively promotes the flow of the impurity mixture in the connecting pipe 8, ensuring that the impurities can enter the separating guide tank 5 more smoothly.

[0066] When the piston rod of the drive cylinder 9 returns to its original position, the impurity discharge frame 503 moves downward, and the lower piston sealing plate 5032 closes the impurity discharge pipe 501. Simultaneously, the compressed and sucked liquid is replenished into the vacuum separator 4 through the circulating replenishment pipe 505, restoring its liquid level to its initial state. At this time, the separation guide tank 5 draws a corresponding volume of liquid from the recovery tank 6 through the liquid extraction pipe 504 for replenishment, thereby ensuring that the liquid level in the vacuum separator 4 is always sufficient. It also enables automatic impurity removal and cleaning, improves the service life and vacuuming efficiency of the vacuum pump 3, and reduces the frequency of maintenance shutdowns for cleaning.

[0067] In summary, the air extraction mechanism of this utility model, through the precise design and coordinated operation of its various components, achieves efficient extraction of gas and automatic processing of impurities within the container of the stretch film packaging machine, significantly improving the efficiency and cleanliness of the packaging operation.

[0068] The following points should be noted in this article:

[0069] 1. The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment; other structures can refer to general designs.

[0070] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0071] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A vacuum mechanism inside a container of a stretch film packaging machine, comprising: The system comprises a vacuum base (1), a control box (2), a vacuum pump (3), a vacuum separator (4), a separation guide tank (5), a recovery tank (6), an impurity collection rack (7), a connecting pipe (8), and a drive cylinder (9); the vacuum pump (3) is fixedly installed at one end of the top plane of the vacuum base (1), and the control box (2) is also fixedly installed on the vacuum base (1) at the location of the vacuum pump (3); the system is characterized in that a vacuum separator (4) is fixedly installed vertically upward on the vacuum base (1) behind the control box (2) by a support rod, and a vertical separation guide tank (5) is fixedly installed on one side of the vacuum separator (4), with the upper end of the separation guide tank (5) being... The lower end of the vacuum separation tank (4) is flush with the lower end of the separation guide tank (5); the vacuum base (1) below the separation guide tank (5) is fixedly provided with an elliptical recovery pool (6), the separation guide tank (5) is located at one end of the recovery pool (6), and the other end of the recovery pool (6) is fixedly provided with an impurity collection rack (7) by a support rod; a connecting pipe (8) is provided between the vacuum separation tank (4) and the separation guide tank (5) with an internal cavity; a driving cylinder (9) is vertically fixedly installed on the vacuum base (1) directly below the connecting pipe (8), and the driving cylinder (9) is located on the outer side wall of the recovery pool (6).

2. The air extraction mechanism inside the container of a stretch film packaging machine according to claim 1, characterized in that, The upper middle part of the vacuum separation tank (4) is provided with a first vacuum pipe (401), and the other end of the first vacuum pipe (401) is connected to the suction end of the stretch film packaging machine. The part of the first vacuum pipe (401) located in the inner cavity of the vacuum separation tank (4) has a flared structure that is narrow at the top and wide at the bottom. The second suction pipe (402) is fixedly installed on one side near the upper middle part of the suction separation tank (4). The port of the second suction pipe (402) located in the inner cavity of the suction separation tank (4) has a downward oblique cut structure. The other end of the second suction pipe (402) is connected to the suction end of the suction pump (3). An arc-shaped baffle plate (404) is provided in the inner cavity of the gas extraction separator (4) at a position between the inner end of the first gas extraction pipe (401) and the inner end of the second gas extraction pipe (402). The baffle plate (404) is inclined, with its lower end away from the second gas extraction pipe (402) and close to the connecting pipe (8). The concave surface of the baffle plate (404) faces the first gas extraction pipe (401). The lower end of the inner cavity of the gas separation tank (4) is provided with an impurity riser frame (403). The upper end of the impurity riser frame (403) is fixed with an impurity riser filter plate (4031) inclined towards the side of the connecting pipe (8). The impurity riser filter plate (4031) is provided with a strip-shaped through hole facing the side of the connecting pipe (8). The lower end of the impurity riser frame (403) is provided with a horizontal impurity riser base plate (4032). The edge of the impurity riser base plate (4032) fits with the side wall of the inner cavity of the gas separation tank (4). When the lower end of the impurity riser base plate (4032) contacts the bottom of the inner cavity of the gas separation tank (4), the lower end of the impurity riser filter plate (4031) is flush with the lower port edge of the connecting pipe (8).

3. The air extraction mechanism inside the container of a stretch film packaging machine according to claim 2, characterized in that, The lower end of the separation guide tank (5) is fixedly provided with an impurity discharge pipe (501) facing the impurity collection rack (7); The upper middle part of the separation guide tank (5) is provided with a gas pipe (502); The lower end of the inner cavity of the separation guide tank (5) is vertically slidably provided with an impurity discharge rack (503). The upper end of the impurity discharge rack (503) is provided with a thickened upper piston sealing plate (5031), and the lower end of the impurity discharge rack (503) is fixedly provided with a lower piston sealing plate (5032). The upper end of the lower piston sealing plate (5032) is an inclined structure that slopes towards the impurity discharge pipe (501). The bottom plate of the separation guide tank (5) is vertically provided with a liquid extraction pipe (504). The lower end of the liquid extraction pipe (504) extends downward into the recovery tank (6), and the other end of the liquid extraction pipe (505) extends to the position between the impurity rise filter plate (4031) and the impurity rise base plate (4032) in the gas extraction separator (4). When the lower end of the lower piston sealing plate (5032) contacts the bottom surface of the inner cavity of the separation guide tank (5), the upper piston sealing plate (5031) closes the connecting pipe (8).

4. The air extraction mechanism inside the container of a stretch film packaging machine according to claim 1, characterized in that, Both the recycling tank (6) and the vacuum separation tank (4) contain non-volatile liquids, with the liquid level in the vacuum separation tank (4) reaching the lower end of the connecting pipe (8).

5. The air extraction mechanism inside the container of a stretch film packaging machine according to claim 3, characterized in that, The piston rod of the driving cylinder (9) is vertically fixed to a horizontal driving arm (901). The left and right ends of the driving arm (901) are vertically fixed to the lower ends of the shafts of the impurity riser frame (403) and the impurity discharge frame (503), respectively. When the piston rod of the driving cylinder (9) is pushed up, the impurity riser frame (403) and the impurity discharge frame (503) move up synchronously. The liquid in the vacuum separation tank (4) is lifted by the impurity riser chassis (4032) and flows to the connecting pipe (8). Part of the liquid lifted in the vacuum separation tank (4) carries the impurities on the impurity riser filter plate (4031) and flows through the connecting pipe (8) to the separation guide tank (5). The upper part of the separation guide tank (5) The piston sealing plate (5031) is located above the connecting pipe (8), and the lower end of the lower piston sealing plate (5032) is aligned with the lower port edge of the impurity discharge pipe (501). The liquid containing impurities from the vacuum separation tank (4) is discharged to the impurity collection rack (7) through the impurity discharge pipe (501). At the same time, the lower piston sealing plate (5032) moves upward to form a negative pressure and draws the corresponding amount of liquid discharged from the recovery pool (6) through the liquid extraction pipe (504) into the separation guide tank (5). When the piston rod of the drive cylinder (9) is reset, the lower piston sealing plate (5032) moves downward and the compressed and sucked liquid is replenished into the vacuum separation tank (4) through the circulation replenishment pipe (505). The liquid level in the vacuum separation tank (4) is restored.

6. The air extraction mechanism inside the container of a stretch film packaging machine according to claim 3, characterized in that, The impurity collection rack (7) is provided with an impurity collection tray (701) that slides away from the impurity discharge pipe (501). The left and right side walls of the impurity collection tray (701) are respectively provided with two parallel side guide grooves (702) on the left and right side walls, and the corresponding positions on the impurity collection rack (7) are provided with corresponding side guide rails (7013). The inner cavity of the impurity collection tray (701) has a V-shaped structure. The side wall of the impurity collection tray (701) near the impurity discharge pipe (501) is provided with a return filter hole (7011). The recovery tank (6) is directly below the return filter hole (7011). The impurity collection tray (701) receives the discharged impurity mixture, and the liquid flows back to the recovery tank (6). The remaining impurities are taken out from the side of the impurity collection tray (701) away from the impurity discharge pipe (501). The outer edge of the impurity collection tray (701) is provided with a handle hole (7012) for easy pulling.

7. The air extraction mechanism inside the container of a stretch film packaging machine according to claim 3, characterized in that, A feeding wheel (801) is horizontally and rotatably mounted in the middle of the connecting pipe (8). The feeding wheel (801) has six blades. A pneumatic box (802) is provided on one side of the connecting pipe (8). A pneumatic wheel (803) is rotatably mounted in the connecting pipe (8). The pneumatic wheel (803) is fixedly connected to the rotating shaft of the feeding wheel (801). A pneumatic inlet pipe (8021) is vertically provided on the pneumatic box (802) on the side of the pneumatic wheel (803) near the air extraction separator (4). The other end of the pneumatic inlet pipe (8021) The air is fixedly connected to the end of the air pipe (502), and the bottom of the pneumatic box (802) is vertically provided with a pneumatic outlet pipe (8022) on the side near the separation guide tank (5). When the upper piston sealing plate (5031) moves upward, the air in the upper part of the inner cavity of the separation guide tank (5) is compressed and sprayed into the pneumatic box (802) through the air pipe (502), which blows the pneumatic wheel (803) to rotate. The conveying wheel (801) rotates accordingly and conveys the impurity mixture on the side of the vacuum separation tank (4) to the side of the separation guide tank (5).

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