A pop can closure system

Abstract

This invention relates to the field of aluminum can processing technology, specifically to an aluminum can sealing system, including a can sealing machine, a lid-mounting machine, and a conveying device. The can sealing machine is used to fix the can lid onto the can body, the lid-mounting machine is used to place the can lid onto the can body, and the conveying device is used to sequentially feed the can body to the lid-mounting machine and the can sealing machine. The invention is characterized by further including a defoaming device. The conveying device is equipped with a defoaming device, which generates airflow through an air pump, and a heating element heats the flowing airflow, increasing its temperature. The increased temperature of the airflow causes small scum to dissipate quickly, and a static pressure component stabilizes the outflowing airflow. When facing large scum, the airflow blows the scum away, and the exhaust vent draws the scum to the heater, where it is heated and evaporated, preventing the accumulation of scum.

Description

Technical Field

[0001] This invention relates to the field of aluminum can processing technology, specifically to an aluminum can sealing system. Background Technology

[0002] Aluminum cans are a common type of metal container in daily life, often used as packaging for beverages, bringing great convenience and enjoyment to people's lives.

[0003] Sealing cans is an essential step in can manufacturing. The process is as follows: Cans filled with liquid are conveyed to a can sealing system consisting of a capping machine and a sealing machine. First, the capping machine places the can lid on top of the can body. Then, the can with the lid is conveyed to the sealing machine. The sealing machine first presses the lid firmly onto the can body, then drives the can body and lid to rotate. During the rotation, pressure is applied to the contact point between the lid and the can body, causing deformation of the lid and the can body. This firmly connects the lid and the can body together and seals them, completing the sealing process of the can.

[0004] For beverages like beer and carbonated drinks, which contain sugars and other ingredients that increase viscosity, the initial velocity of the liquid, combined with collisions between the liquid and the can, and between liquids themselves, inevitably causes dissolved gases such as CO2 to precipitate and form foam on the surface. Because of the high viscosity of the liquid, this foam cannot dissipate quickly, resulting in a buildup of scum on the surface. Furthermore, due to the efficiency-driven production line, this scum doesn't have time to dissipate before the can is sent to the capping machine to have the cap placed and then to the sealing machine. When the sealing machine presses the cap onto the can, the scum is squeezed outwards and adheres to the outer wall of the can. Subsequently, the rotation of the sealing machine causes this scum to splash outwards and fall onto nearby components, such as support rods on the frame and the conveyor belt that transports the cans.

[0005] The foam that splashes onto the components is essentially still a beverage, containing a large amount of sugar, making it prone to microbial growth. Furthermore, these microorganisms often grow near the processing area of ​​the can-sealing machine, and factories typically only inspect the hygiene of surfaces that come into contact with food or food contact surfaces every two weeks, or even once a month. During this period, microorganisms multiply rapidly, easily causing secondary contamination of the beverage from the outside. In addition, my country has high requirements for the number of microorganisms in food; for example, the acceptable level limit for E. coli is 10 CFU / g, and the acceptable level limit for Staphylococcus aureus is 10 CFU / g. Therefore, these splashed foams can easily lead to products failing to meet quality standards.

[0006] To address this, a can sealing system is proposed to prevent beverage foam from splashing outwards during the can sealing process. Summary of the Invention

[0007] The purpose of this invention is to provide a can sealing system that accelerates the destruction of foam during the can sealing process, thereby reducing the amount of foam during the sealing process and thus reducing the risk of splashing foam contaminating the processing site, ensuring that the hygiene conditions of the processing site meet the standards, and ultimately ensuring that the hygiene quality of the product meets the standards.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A can sealing system includes a can sealing machine, a lid-pressing machine, and a conveying device. The can sealing machine is used to fix the can lid to the can body, the lid-pressing machine is used to place the can lid onto the can body, and the conveying device is used to sequentially feed the can body to the lid-pressing machine and the can sealing machine. The system is characterized by further including a defoaming device and a spinning device. The conveying device is equipped with both the defoaming device and the spinning device, with the spinning device located inside the defoaming device. The defoaming device generates airflow through an air pump. The airflow passes through a heating element in the air outlet and is then discharged. The discharged airflow passes through a baffle and moves horizontally towards the exhaust port. The gas returns to the pump body through the exhaust port to complete the circulation.

[0010] The defogging device includes an arch frame, a static pressure assembly, an air inlet, heating elements, an exhaust outlet, a heater, an air pump, baffles, and a temperature sensor. The arch frame is mounted on a conveying device, the static pressure assembly is mounted on one side of the arch frame, an air inlet is provided on one side of the arch frame and connected to the static pressure assembly, multiple heating elements are arrayed inside the air inlet, the air inlet and the exhaust outlet are opposite each other, the bottom of the exhaust outlet and the bottom of the air inlet are on the same horizontal plane, and the exhaust outlet is located on the other side of the arch frame, a heater is installed inside the exhaust outlet, an air pump is installed above the arch frame, the air pump is connected to the air inlet and the exhaust outlet through a pipe, baffles are symmetrically installed on both sides of the lower part of the arch frame, and a temperature sensor is installed on the inner wall of the bottom of the arch frame.

[0011] Based on this scheme, the overall working process of the present invention is as follows: First, after the can is filled by the filling machine, it is transported to the conveying device. Then, the conveying device sends the can to the defoaming device and the spinning device. During the passage of the can through the defoaming device, the air pump pumps air into the air outlet. Under the guidance of the air outlet, this air is blown onto the foam inside the can. When the foam is blown by this air, on the one hand, the liquid evaporation rate on the surface of the foam increases, the foam wall becomes thinner quickly and is easier to break. On the other hand, the foam also directly bears the force brought by the fluid blowing. Therefore, the foam breaks quickly during the passage of the arch frame, thereby removing the foam inside the can. When the can... When positioned on the spinning device, the turntable drives the can to rotate. Under the action of centrifugal force, the liquid inside the can rises to the surroundings, causing some of the liquid to detach from the can. The detached liquid reaches the pouring plate under the blowing of hot air, while the other part moves down the can body and enters the liquid collection cylinder through the drainage channel. This prevents liquid from spilling out during the rotation of the can during the sealing process, thus preventing the large-scale growth of bacteria from spilled liquid. Then, the can body is conveyed forward by the conveyor to the lid-adding machine. After that, the can body carrying the lid is conveyed to the can-sealing machine to complete the can-sealing operation. At this point, the sealing of the can is completed. Finally, the sealed can is sent away by the conveyor, completing the unloading process.

[0012] Preferably, the static pressure assembly includes a static pressure box, guide columns, and a sliding plug. The static pressure box is installed on one side of the arch frame and is connected to the air outlet. The guide column array is installed at the bottom of the internal cavity of the static pressure box, and the guide columns are located directly below the upper groove of the static pressure box. The sliding plug is installed above the guide columns by a spring, and the outer surface of the upper part of the sliding plug is connected to the inner wall of the upper groove of the static pressure box.

[0013] To ensure a stable airflow from the air outlet and thus guarantee the device's effectiveness in eliminating scum, a certain air pressure is required for the air pump. For a specific air pump, this often means increasing the velocity of the gas pumped out. However, this increased gas velocity, resulting in a larger airflow from the air outlet, may blow away scum and liquid from the can. Therefore, a static pressure component is installed to stabilize the velocity of the gas from the air outlet and make it more uniform, thereby preventing scum and liquid from being blown away and splashing. At the same time, because the gas velocity is uniform, the gas is heated evenly, which helps to ensure the device's effectiveness in eliminating scum during operation.

[0014] It's important to note that uniform gas velocity from the air outlet is crucial for ensuring the effectiveness of this invention in eliminating scum. This is because uneven gas velocity creates a spatial velocity gradient. Faster-moving gas takes less time to pass over the heating element than slower-moving gas, leading to uneven heating. Obviously, the faster-moving gas is colder than the slower-moving gas, thus its effect of accelerating scum evaporation through higher temperatures is less pronounced than that of the slower-moving gas. Conversely, the slower-moving gas, due to its longer heating time and higher temperature, may affect the liquid temperature. Furthermore, this velocity gradient significantly increases the difficulty of pre-use testing. Therefore, a static pressure component is incorporated to address these issues.

[0015] Preferably, the upper width of the sliding plug is the same as the width of the groove in the upper part of the static pressure box, and a balance groove is formed on the upper surface of the sliding plug. Multiple balance holes are formed symmetrically on both sides of the balance groove.

[0016] By setting the upper width of the sliding plug to match the width of the groove at the top of the static pressure chamber, the direct impact of the increased air pressure generated by the air pump on the air pressure inside the static pressure chamber can be effectively reduced. Furthermore, by separating the air pressure generated by the air pump from the original air pressure inside the static pressure chamber, the air pump pressure pushes the sliding plug up and down, thereby enabling the balance orifice to move up and down within the static pressure chamber. In other words, the balance orifice can move into the cavity of the static pressure chamber under the pressure of the pump body. At this time, the airflow from the pump body enters the cavity of the static pressure chamber through the balance orifice, thus increasing the air pressure inside the static pressure chamber. Simultaneously, the increased air pressure inside the static pressure chamber, under the action of the spring, also pushes the sliding plug upwards, isolating the air pump pressure from the gas pressure inside the static pressure chamber, thereby ensuring stable air pressure inside the static pressure chamber and resulting in a stable and uniform airflow flowing out of the static pressure chamber.

[0017] Preferably, the angle between the axis of the air outlet and the horizontal plane is an acute angle, and the air outlet is tilted downward toward the exhaust port.

[0018] By setting the air outlet at an angle of less than 90° to the liquid surface inside the can, the air delivered from the outlet will not directly impact the liquid surface and foam inside the can. This design has the following two advantages: First, it prevents foam and liquid from splashing outward due to the impact of the gas; second, the inclined setting of the air outlet makes the air flowing in the outlet flow relative to the plane. The inclined airflow has a slower speed, which can prolong the heating time of the air and prevent uneven heating. This is conducive to the hot air breaking up the foam, thereby ensuring the processing quality of the product.

[0019] It is important to emphasize that, in order to prevent the airflow from splashing the foam and thus ensuring no additional contamination during the sealing process due to the use of this invention, the airflow velocity needs to be controlled within a suitable range. Generally, this means that the airflow velocity should be lower than the foam's breakup and separation velocity. Foam undergoes vigorous movement when blown by gas, leading to its breakup and splashing. The velocity at which foam is just about to splash due to the airflow is called the foam's breakup velocity. For water-based beverages, this breakup velocity is typically around 30 cm / s; therefore, a gas flow velocity lower than this generally meets the requirement of preventing foam splashing. Additionally, the foam separation velocity also needs to be considered. The foam separation velocity refers to the minimum velocity at which foam in the airflow re-aggregates to form droplets. When the airflow velocity is higher than the foam separation velocity, the foam is easily dispersed, leaving residual foam on the surface of the object. Generally, the foam separation velocity is approximately 18 cm / s. Therefore, considering all factors, to ensure that the airflow does not splash the foam, the airflow velocity should be lower than 18 cm / s.

[0020] It is worth adding that, in order to ensure the realization of the above two beneficial effects, the angle between the air supply direction of the air outlet and the liquid surface may vary for different types of cans, filling liquids and filling schemes. The thickness of the foam layer may also vary, but in the same batch of automated production, the thickness of the foam layer is basically the same. Therefore, the angle of the air outlet can be adjusted according to the actual situation in production to obtain the best effect.

[0021] Preferably, multiple heating elements are evenly and symmetrically installed inside the air outlet. The heating elements are V-shaped, and the direction of the V-shaped portion is consistent with the tilt direction of the air outlet, so that the air passing over the heating elements can provide rotational power for the foam inside the can.

[0022] By setting a heating element, the air blown out of the air outlet is heated and becomes hot air when it passes through the heating element. This hot air is then blown onto the foam inside the can, increasing the temperature of the foam surface area, which in turn increases the evaporation rate of the liquid on the foam surface and accelerates the thinning process of the foam wall, allowing the foam to break down more quickly, thus ensuring the foam removal effect of this invention.

[0023] Furthermore, by defining the shape of the heating element, it simultaneously guides the air delivered from the air outlet. This causes the hot air to exert a tangential force along the cross-section of the can onto the foam and liquid inside, thus eliminating the foam while simultaneously causing the foam and liquid inside the can to rotate. This ensures that the hot air can completely reach all the foam in the can, preventing any remaining foam from being obstructed by the can wall, thereby guaranteeing the effectiveness of foam removal.

[0024] Preferably, a through groove is provided below the baffle, the width of which is slightly larger than the width of the top of the can. A flow plate and a pouring plate are installed on both sides of the through groove. The flow plate is connected to the air outlet within a range of 90° to 180°, and the flow plate is on the same plane as the inner wall of one side of the through groove. The top of the flow plate is horizontal, and the height of the top of the flow plate is the same as the height of the can opening. The side of the top of the pouring plate is on the same plane as the inner wall of one side of the through groove, and the height of the top of the pouring plate is the same as the height of the top of the flow plate.

[0025] When hot air from the air outlet is obstructed by the outside air, it inevitably diffuses in all directions. Furthermore, because this hot air is guided by the heating plate, it has an initial velocity pointing outwards from the arch frame. Therefore, the hot air has a strong tendency to diffuse outwards from the arch frame. This tendency makes it easy for the hot air to escape the effective suction area of ​​the exhaust vent, making it difficult for the exhaust vent to effectively draw in this portion of hot air. Consequently, the hot air may diffuse into the environment, affecting the temperature within the processing workshop. To address this, a baffle was installed to block the horizontal spread of hot air. This reduces the extent to which hot air diffuses in all directions, ensuring the suction effect of the exhaust vent. Furthermore, the baffle can be combined with an arch frame to form a lid-shaped structure, allowing hot air to diffuse only towards the exhaust vent, which then draws it away. The width of the channel is slightly greater than the width of the top of the can, so that when larger scum floats, it is blown away and falls onto the pouring plate under the influence of the hot air. The scum then travels through the inclined plate to the heater, where it is evaporated, preventing liquid accumulation.

[0026] It is worth adding that the top of the deflector is horizontal, which guides the flow of hot air, allowing it to move horizontally. Furthermore, the top of the deflector is at the same height as the opening of the can, enabling the hot air to directly blow away the foam on the liquid surface in a direction perpendicular to the can. This direction is the easiest way to dislodge the foam, accelerating its removal and thus increasing production speed. On the other hand, the top of the pouring plate is at the same height as the deflector, allowing the hot air to be guided directly into the exhaust vent after blowing away the foam, thus accelerating hot air circulation.

[0027] It should also be added that food processing plants have strict requirements for temperature control, specifically the following two points: First, the temperature inside a food processing plant usually needs to be controlled below 25°C to reduce the growth activity of microorganisms in the air and ensure the hygiene of the processing space and the safety of the food; Second, especially for carbonated beverages, temperature control in the processing space is crucial to the quality of the beverage. This is because the solubility of CO2 in water increases significantly as the temperature decreases. Therefore, during the processing of carbonated beverages, the temperature of the liquid must usually be controlled below 8°C.

[0028] Based on these two reasons, and considering that the air blown out of the air outlet is hot air, in order to prevent this hot air from dissipating into the factory workshop and causing the local temperature in the factory area to rise and deviate from the standard allowable range, the height of the top of the pouring plate is the same as the height of the horizontal plate. This allows the hot air to be guided after blowing over the foam surface inside the can and then quickly enter the exhaust vent, reducing the amount of hot air dissipated outward and reducing the impact of hot air on the ambient temperature inside the factory.

[0029] Preferably, the spinning device includes a conveying pipe, turntables, a belt, and a motor; the conveying pipe is installed on the conveying device and is located inside the arch frame; multiple turntables are arrayed on the inner wall of the conveying pipe; a belt is installed below the turntables, and the belt connects the multiple turntables to the motor, which is installed on the conveying device; multiple rotating holes are arrayed on the lower end face of the conveying pipe, the center distance between the rotating holes is slightly larger than the diameter of the can; multiple arc-shaped limiting plates are provided on the inner walls on both sides of the conveying pipe, the limiting plates are located between two rotating holes, and the inclination direction of the limiting plates is the same as the direction of movement of the can.

[0030] The turntable installed inside the conveying pipe can drive the aluminum can to rotate, thus rotating the aluminum can in advance before the sealing rotation, and discharging the liquid that will spill out during sealing in advance, preventing the liquid from contaminating the sealing machine. The center distance between the rotating holes ensures that two adjacent aluminum cans will not interfere with each other during rotation, and the arc-shaped limiting plate ensures that there is only one aluminum can on each turntable during transportation, and also prevents the aluminum can from moving backward during rotation, which would cause blockage in the conveying pipe.

[0031] It should be added that after the can rotates, due to centrifugal force, some of the liquid that spills from the can opening falls onto the spill plate under the blowing of hot air, while the other part of the liquid moves downward along the can body and enters the liquid collection cylinder along the drainage channel, preventing liquid from spilling out and contaminating the can sealing machine when the can is sealed.

[0032] Preferably, the turntable is installed in a rotating hole, and multiple arc-shaped drainage grooves are arranged in a circumferential array on the end face of the turntable. The orientation of the drainage grooves is opposite to the rotation direction of the turntable. A liquid collection cylinder is installed below the drainage grooves, and a rotating shaft is connected to the bottom of the turntable. A rotating drum is installed below the rotating shaft, and the rotating drum is connected to a motor via a belt.

[0033] By setting a turntable to rotate the can before sealing it, and the turntable's rotation speed should be the same as the can sealing machine's rotation speed, the liquid that should have spilled out will be spilled out in advance when the can sealing machine rotates over the can. This prevents the liquid inside the can from spilling out during the rotation of the can sealing machine and thus prevents the can sealing machine from being contaminated.

[0034] It should be added that the drainage channels on the turntable are oriented in the opposite direction to the turntable's rotation, which increases the friction between the turntable and the can when the turntable rotates. It also increases the upper limit of the can's rotation speed. After the liquid spilled from the can falls along the can body, it enters the liquid collection cylinder through the drainage channels.

[0035] Compared with the prior art, the advantages of the present invention are as follows:

[0036] 1. During the sealing process of aluminum cans, the amount of foam on the liquid surface is reduced, thereby lowering the risk of splashing foam contaminating the processing area and ensuring that the hygiene conditions of the processing area meet the standards, ultimately guaranteeing the hygienic quality of the product. To this end, the evaporation rate of the foam layer is accelerated to speed up the foam's collapse, thus removing the foam from the liquid surface. A defoaming device is installed, which uses air to blow away the foam inside the can. Under the influence of this airflow, on the one hand, the liquid evaporation rate on the foam surface increases, the foam walls thin rapidly and are more easily broken; on the other hand, the foam is also directly subjected to the force of the fluid blowing, causing the foam to break rapidly as it passes through the arch frame, thus removing the foam from the inside of the can.

[0037] 2. To ensure the effectiveness and efficiency of foam removal through air blowing, this invention employs a method of raising the temperature of the air blowing the foam. This increases the temperature of the foam, accelerating the evaporation of moisture and shortening the process of foam wall thinning and eventual foam breakage, thereby improving the foam removal effect and efficiency. For this purpose, a heating element is installed. When the air blown from the air outlet passes through the heating element, it is heated into hot air. This hot air is then blown onto the foam inside the can, raising the temperature of the foam surface area and further increasing the evaporation rate of the liquid on the foam surface. This accelerates the thinning process of the foam wall, allowing the foam to break down more quickly, ensuring the foam removal effect of this invention.

[0038] 3. To ensure product quality and improve the utilization rate of hot air heat, this invention recovers and recycles the hot air that has been blown over the surface of the foam. This prevents the heat from accumulating and disrupting the overall temperature environment for product processing, while also saving energy costs associated with generating the hot air. To this end, a baffle is installed and connected to the air inlet and outlet. This allows the hot air, after being blown from the air inlet and passing over the surface of the foam inside the can, to directly enter the suction range of the outlet and be drawn away. This prevents the hot air from dissipating into the working environment of the processing plant and affecting the ambient temperature and product quality. Simultaneously, the drawn-out hot air is guided through an airflow duct and discharged back from the air inlet, thus fully utilizing the remaining heat and saving energy costs. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 This is a schematic diagram of the overall structure of the defoaming device of the present invention;

[0041] Figure 3 This is a schematic diagram of the internal gas pipeline of the demister device of the present invention;

[0042] Figure 4 This is a cross-sectional view of the hydrostatic component of the present invention;

[0043] Figure 5 This is a schematic diagram of the overall structure of the sliding plug of the present invention;

[0044] Figure 6 For the present invention Figure 1 A schematic diagram showing the fit between the can and the aluminum can.

[0045] Figure 7 This is a schematic diagram showing the relationship between the heating element and the air outlet of the present invention;

[0046] Figure 8 This is a cross-sectional view of the baffle of the present invention;

[0047] Figure 9 This is a schematic diagram of the overall structure of the spin device of the present invention;

[0048] Figure 10 This is a schematic diagram of the conveying pipe structure of the present invention;

[0049] Figure 11 This is a cross-sectional view of the turntable of the present invention.

[0050] In the diagram: 1. Sealing machine; 2. Covering machine; 3. Defoaming device; 31. Arch frame; 32. Static pressure assembly; 321. Static pressure box; 322. Guide column; 323. Sliding plug; 3231. Balance groove; 3232. Balance hole; 33. Air outlet; 34. Heating element; 35. Exhaust outlet; 36. Heater; 37. Air pump; 38. Baffle; 381. Through groove; 382. Flow plate; 383. Tilting plate; 39. Temperature sensor; 4. Spinning device; 41. Conveying pipe; 411. Rotating hole; 412. Limiting plate; 42. Turntable; 421. Drainage groove; 422. Liquid collection cylinder; 423. Rotating shaft; 424. Rotating drum; 43. Belt; 44. Motor; 5. Conveying device. Detailed Implementation

[0051] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0052] Example 1:

[0053] like Figures 1 to 11 The first specific embodiment of the present invention is shown in the figure.

[0054] As preparation for the installation of this invention, it should be noted that: First, the can sealing machine 1 and the lid-filling machine 2 used in this invention are existing technology equipment, so their principles will not be explained further. In this embodiment, the automatic can sealing machine equipment has integrated the lid-filling machine 2 and the can sealing machine 1 into the same equipment. Second, the conveying device 5 used in this invention is a belt conveyor, commonly known as a conveyor belt, for conveying cans. As part of the production system, the conveying device 5 has been combined and installed with the lid-filling machine 2 and the can sealing machine 1 to form a complete can sealing system. Third, unless otherwise specified, the fixed connection method used in this invention is threaded connection. Fourth, the arch frame 31 has two air inlets 33 and two exhaust outlets 35. Fifth, the heater 36 is an aluminum alloy heater.

[0055] When installing this invention, firstly, the arch frame 31 and the transport pipe 41 are fixedly installed onto the conveying device 5. Multiple turntables 42 are installed inside the transport pipe 41, and the turntables 42 are connected to the motor 44 using a belt 43. Simultaneously, the air pump 37 is fixedly installed onto the outer top of the arch frame 31. Then, for each air outlet 33, two long strip-shaped heating elements 34 are fixedly installed onto the top and bottom walls of the air outlet 33 respectively using a snap-fit ​​method. For each air exhaust outlet 35, a heater 36 is fixedly installed into the air exhaust outlet 35 using a snap-fit ​​method, ensuring that the heating fins of the heater 36 are parallel to the air exhaust outlet 35. The exhaust direction is arranged so as not to obstruct the flow of gas. Next, a static pressure assembly 32 is fixedly installed on the outside of the air outlet 33. A spring is installed on the guide post 322 in the static pressure box 321 and is engaged with the sliding plug 323. A baffle 38 is slidably installed at the bottom of the arch frame 31, and the bottom of the pouring plate 383 is kept at the same height as the bottom of the exhaust outlet 35. Finally, gas pipes are fixedly installed between the static pressure assembly 32 and the air pump 37, and between the exhaust outlet 35 and the air pump 37, so that the exhaust outlet 35, the air pump 37, the static pressure assembly 32 and the air outlet 33 become a connected gas pipeline without branches. At this point, the installation of the present invention is completed.

[0056] When the invention is in operation, the conveying device 5 starts and conveys the cans one by one to the area below the arch frame 31. When the cans move on the conveying device 5 to the air outlet 33, the air pump 37 starts and outputs airflow. The output airflow reaches the static pressure assembly 32 through the pipeline and enters the static pressure box 321 after passing through the sliding plug 323. The airflow in the static pressure box 321 flows out through the air outlet 33. The heating element 34 at the air outlet 33 heats the airflow flowing through the air outlet 33, turning it into hot air. The hot air blown from the air outlet 33 towards the foam on the top of the can promote the evaporation and disintegration of the foam inside the can. After being guided by the flow plate 382, ​​the hot air at this time is at the height of the liquid surface in the can to agitate the foam. The hot air blows in parallel, quickly dispersing the foam. When dealing with large foam particles, the hot air blows them onto the pouring plate 383, where they slide to the bottom of the heater 36. The heater 36 then heats and evaporates the foam, preventing its accumulation. After blowing away the foam, the hot air is drawn out of the lower cavity of the arch frame 31 through the exhaust port 35, preventing heat loss and an increase in the outside temperature. The extracted hot air also carries away the evaporated foam, keeping the lower cavity of the arch frame 31 dry and inhibiting the growth of microorganisms. When facing different ambient temperatures, the temperature sensor 39 at the top of the arch frame 31 senses the temperature of the hot air at the bottom of the arch frame 31, thereby controlling the heating power of the heating element 34 to ensure that the hot air flowing out of the air outlet 33 is always maintained at the most suitable temperature for foam dissipation.

[0057] For the static pressure assembly 32, when the air pressure generated by the air pump 37 is unstable and causes the air pressure to rise, the sliding plug 323, under the combined action of the gas pressure in the static pressure box 321 and the spring, seals the top of the static pressure box 321, preventing the air pressure inside the static pressure box 321 from rising, which would cause the airflow velocity in the air outlet 33 to increase and thus make the airflow unstable, thereby improving the efficiency of foam removal. When the sliding plug 323 moves downward under the push of the air pump pressure until the balance hole 3232 enters the internal cavity of the static pressure box 321, the airflow generated by the air pump 37 will enter the balance groove 3231 and enter the static pressure box 321 through the balance hole 3232, quickly replenishing the air pressure in the static pressure box 321, so that the airflow flowing out of the static pressure box 321 is stable.

[0058] While the cans are being blown by hot air inside the arch frame 31, they move inside the conveying pipe 41. The limiting plate 412 restricts the movement so that there is only one can above each turntable 42. The motor 44 below the conveying pipe drives the rotating drum 424 to rotate via the belt 43. The rotating drum 424 drives the rotating shaft 423 to rotate, which in turn drives the turntable 42 to rotate inside the rotating hole 411, thus causing the turntable 42 to rotate the cans.

[0059] When the can rotates on the turntable 42, the drainage groove 421 on the turntable 42 provides greater friction between the turntable 42 and the can. At the same time, when the can rotates, the liquid inside the can is sprayed out of the can opening under the action of centrifugal force. Part of the sprayed liquid is blown onto the pouring plate 383 by the hot air delivered by the air outlet 33, and the other part of the liquid moves downward along the can body. The liquid enters the liquid collection cylinder 422 through the drainage groove 421, preventing the liquid from contaminating the delivery pipe 41.

[0060] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A can sealing system, comprising a can sealing machine (1), a lid-pressing machine (2), and a conveying device (5); wherein the can sealing machine (1) is used to fix the can lid onto the can body, the lid-pressing machine (2) is used to place the can lid onto the can body, and the conveying device (5) is used to sequentially convey the can body to the lid-pressing machine (2) and the can sealing machine (1); characterized in that, It also includes a defoaming device (3) and a spin device (4). The conveying device (5) is equipped with a defoaming device (3) and a spin device (4), and the spin device (4) is located inside the defoaming device (3). The defoaming device (3) generates airflow through an air pump (37). The airflow passes through the heating element (34) in the air outlet (33) and is discharged. The discharged airflow passes through the baffle (38) and moves horizontally toward the exhaust port (35). The gas returns to the air pump (37) through the exhaust port (35) to complete the cycle. The defogging device (3) includes an arch frame (31), a static pressure assembly (32), an air outlet (33), heating elements (34), an exhaust outlet (35), a heater (36), an air pump (37), a baffle (38), and a temperature sensor (39). The arch frame (31) is mounted on the conveying device (5), and the static pressure assembly (32) is mounted on one side of the arch frame (31). An air outlet (33) is provided on one side of the arch frame (31), and the air outlet (33) is connected to the static pressure assembly (32). Multiple heating elements (34) are arrayed inside the air outlet (33). The air supply port (33) and the air exhaust port (35) are opposite each other. The bottom of the air exhaust port (35) and the bottom of the air supply port (33) are on the same horizontal plane. The air exhaust port (35) is opened on the other side of the arch frame (31). A heater (36) is installed in the air exhaust port (35). An air pump (37) is installed above the arch frame (31). The air pump (37) is connected to the air supply port (33) and the air exhaust port (35) through a pipe. Baffles (38) are symmetrically installed on both sides of the lower part of the arch frame (31). A temperature sensor (39) is installed on the inner wall of the bottom of the arch frame (31). The static pressure assembly (32) includes a static pressure box (321), guide pillars (322), and a sliding plug (323). The static pressure box (321) is installed on one side of the arch frame (31) and is connected to the air outlet (33). The guide pillars (322) are arranged in an array at the bottom of the internal cavity of the static pressure box (321) and are located directly below the upper groove of the static pressure box (321). The sliding plug (323) is installed above the guide pillars (322) by a spring, and the outer surface of the upper part of the sliding plug (323) is connected to the inner wall of the upper groove of the static pressure box (321).

2. The can sealing system according to claim 1, characterized in that: The upper width of the sliding plug (323) is the same as the width of the upper groove of the static pressure box (321). A balance groove (3231) is provided on the upper surface of the sliding plug (323), and multiple balance holes (3232) are symmetrically arranged on both sides of the balance groove (3231).

3. The can sealing system according to claim 1, characterized in that: The angle between the axis of the air outlet (33) and the horizontal plane is acute, and the air outlet (33) is inclined downward toward the exhaust outlet (35).

4. The can sealing system according to claim 3, characterized in that: The heating element (34) is V-shaped, and the direction of the V-shaped part is consistent with the inclined direction of the air outlet (33).

5. A can sealing system according to claim 1, characterized in that: A through groove (381) is provided below the baffle (38). The width of the through groove (381) is slightly larger than the width of the top of the can. A flow plate (382) and a pouring plate (383) are installed on both sides of the through groove (381). The flow plate (382) is connected to the air outlet in the range of 90° to 180°. The inner wall of the flow plate (382) and the inner wall of the through groove (381) are on the same plane. The top of the flow plate (382) is horizontal and the height of the top of the flow plate (382) is the same as the height of the can opening. The side of the top of the pouring plate (383) is on the same plane as the inner wall of the through groove (381) and the height of the top of the pouring plate (383) is the same as the height of the top of the flow plate (382).

6. The can sealing system according to claim 1, characterized in that: The spin device (4) includes a conveying pipe (41), a turntable (42), a belt (43), and a motor (44); the conveying pipe (41) is mounted on the conveying device (5) and is located inside the arch frame (31). Multiple turntables (42) are arrayed on the inner wall of the conveying pipe (41), and a belt (43) is installed below the turntables (42), which connects the multiple turntables (42) to the motor (44). The motor (44) is mounted on the conveying device (5); multiple rotating holes (411) are arrayed on the lower end face of the conveying pipe (41), the center distance between the rotating holes (411) is slightly larger than the diameter of the can, and multiple arc-shaped limiting plates (412) are provided on the inner walls on both sides of the conveying pipe (41), the limiting plates (412) are located between two rotating holes (411), and the inclination direction of the limiting plates (412) is the same as the movement direction of the can.

7. A can sealing system according to claim 6, characterized in that: The turntable (42) is installed in the rotating hole (411). Multiple arc-shaped drainage grooves (421) are arranged in a circular array on the end face of the turntable (42). The orientation of the drainage grooves (421) is opposite to the rotation direction of the turntable (42). A liquid collection cylinder (422) is installed below the drainage grooves (421). A rotating shaft (423) is connected to the bottom of the turntable (42). A rotating drum (424) is installed below the rotating shaft (423). The rotating drum (424) is connected to the motor (44) through a belt (43).

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