A frying system and method of operation

Abstract

The present application relates to a kind of frying system and working method, frying tank is located in rack and is fixedly connected with rack, chain plate conveyor and first net chain conveyor are located inside frying tank and are linearly arranged along front-back direction, second net chain conveyor is located above first net chain conveyor, the rear side of first net chain conveyor and second net chain conveyor is respectively inclined upward and away from inside frying tank, the inner side of first net chain upper layer at the inclined place of the rear side of first net chain conveyor is in contact with cam, cam is fixedly connected with rotating shaft, rotating shaft is rotatably connected with the first rack of first net chain conveyor, and first motor drives rotating shaft to rotate.The present application shakes oil droplets and debris from food surface by mechanical vibration first net chain, in cooperation with high-speed airflow to take away oil droplets and debris, vibration and airflow cooperation reduces the debris and oil droplets on the upper surface and side of food, and debris and oil droplets can be recycled, reduce production cost, while reducing the oil content of food.

Description

Technical Field

[0001] This invention relates to the field of food frying, and in particular to a frying system and its working method. Background Technology

[0002] Existing conveyor fryers result in food with a high oil content after frying, leading to significant waste of frying oil, increased frying costs, and the high oil content is detrimental to consumers' health.

[0003] Existing conveyor-type fryers have two chain conveyors between the upper casing and the frame. The lower chain conveyor carries the food, while the upper chain conveyor prevents some low-density food from floating to the surface. To prevent excessive lateral movement of low-density food between the two chain conveyors, the gap between them is usually small. While this small gap provides good restraint during frying, it also restricts space for maintenance and parts replacement, hindering operator work. Furthermore, the small distance between the upper casing and the upper chain conveyor makes maintenance of the area below the upper casing and above the upper chain conveyor inconvenient. Summary of the Invention

[0004] The present invention aims to solve the above problems by providing a frying system and working method, which solves the problem of high oil content in food after frying and the problem of inconvenient operation during maintenance and replacement of parts.

[0005] A frying system includes: a frame, a chain conveyor, a first mesh conveyor, a second mesh conveyor, a frying tank, a cam, a rotating shaft, and a first motor. The frying tank is located in the frame and fixedly connected to the frame. The chain conveyor and the first mesh conveyor are located inside the frying tank and arranged in a straight line along the front-to-back direction. The second mesh conveyor is located above the first mesh conveyor. The conveying direction of the chain conveyor, the first mesh conveyor, and the second mesh conveyor is from front to back. The rear sides of the first mesh conveyor and the second mesh conveyor are respectively inclined upwards away from the interior of the frying tank. The inner side of the upper layer of the first mesh conveyor at the inclined rear side of the first mesh conveyor contacts the cam. The cam is fixedly connected to the rotating shaft. The rotating shaft is rotatably connected to the first frame of the first mesh conveyor. The first motor drives the rotating shaft to rotate.

[0006] Furthermore, multiple cams are arranged from front to back, the cams rotate at the same speed, and the installation angles of two adjacent cams in the front-to-back direction are different.

[0007] Furthermore, it also includes a top cover, which is located above the inclined rear side of the first mesh conveyor. The left and right sides of the top cover are fixedly connected to the first frame, and a cooling channel is formed between the top cover and the first mesh conveyor. An air inlet and an air outlet connected to the cooling channel are formed on the left and right sides of the top cover, and the air inlet is connected to a fan or air pump.

[0008] Furthermore, it also includes an upper shell, a lifting device, a first connecting rod, and a second connecting rod. The upper shell is located above the frying tank. The lifting device drives the upper shell to move vertically relative to the frying tank. The second mesh conveyor is located below the upper shell. The left and right sides of the second frame of the second mesh conveyor are rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is rotatably connected to the upper shell. The left and right sides of the frame each form an upper support surface, which supports the lower side of the upper shell. The left and right sides of the frying tank each form a lower support surface, which supports the second frame. The upper support surface is higher than the lower support surface. In the frying state, the horizontal distance between the axes rotatably connected at both ends of the second connecting rod is greater than 0. The left and right sides of the first frame of the first mesh conveyor and the left and right sides of the frame of the chain plate conveyor are respectively rotatably connected to one end of a different first connecting rod. The other end of the first connecting rod is rotatably connected to the upper shell. The inner walls of the left and right sides of the frying tank are respectively fixedly connected to the first support plate. The first support plate is used to support the first frame. The lower support surface is higher than the first support plate. When frying, the horizontal distance between the axes rotatably connected at both ends of the first connecting rod is greater than 0.

[0009] Furthermore, it also includes a heating tube and a third frame, which are located below the first mesh conveyor. The heating tube is fixedly connected to the third frame, and the third frame is fixedly connected to the first frame. It also includes a second support block, which is fixedly connected to the first frame or the third frame. The first support plate is used to support the second support block. When frying, the height difference between the first mesh conveyor and the second mesh conveyor is less than the height difference between the first mesh conveyor and the second mesh conveyor when under maintenance.

[0010] Furthermore, the outer side of the chain plate of the chain conveyor is fixedly connected to an anti-stick plate, the chain plate being made of stainless steel and the anti-stick plate being made of polytetrafluoroethylene.

[0011] Furthermore, it also includes a bottom scraping device and a slag discharge pipe. The rear end of the first mesh conveyor extends to the rear side of the frying tank. The bottom scraping device includes a drive sprocket, a bottom scraping chain, scrapers, driven wheels, and guide wheels. Multiple scrapers are arranged between the bottom scraping chains on the left and right sides. The left and right sides of the scrapers are respectively fixedly connected to the bottom scraping chains. The side of the scraper away from the bottom scraping chain contacts the bottom surface of the frying tank. The driven wheels and guide wheels are rotatably connected to the frying tank through shafts. The drive sprocket is rotatably connected to the frame through a shaft. The motor drives the drive sprocket to rotate. The drive sprocket drives the bottom scraping chain to move. The rear end of the bottom scraping chain is inclined upward and leaves the interior of the frying tank. The rear end of the bottom scraping chain is located above the slag discharge pipe. The slag discharge pipe runs vertically through the tank and is fixedly connected to the frame.

[0012] Furthermore, it also includes a mesh screen, an oil inlet pipe, an oil outlet pipe, and an oil outlet groove. The bottom of the frying tank has an oil outlet groove formed downwards. The oil outlet groove is fixedly connected to and communicates with the oil outlet pipe. The oil inlet pipe is fixedly connected to and communicates with the side of the frying tank. The height of the oil inlet pipe is higher than that of the oil outlet pipe. The mesh screen with its rear end tilted upwards is located above the oil outlet groove. The mesh screen is located inside the frying tank and is fixedly connected to the frying tank. The scraper is located above the mesh screen and is slidably connected to the mesh screen.

[0013] Furthermore, it also includes a circulation pump, an inlet pipe, and an outlet pipe. The oil inlet of the circulation pump is connected to the inlet pipe, the inlet pipe is connected to the rear end of the frying tank, the oil outlet of the circulation pump is connected to the outlet pipe, and the outlet pipe is connected to the front end of the frying tank.

[0014] A method of operating the frying system includes the following steps: Step S1: After the food enters the frying tank and is heated by the cooking oil, it first comes into contact with the anti-stick plate on the outside of the chain conveyor, and the outer surface of the food is fried to form a crispy crust. Step S2: After the food leaves the chain conveyor and enters between the first mesh chain conveyor and the second mesh chain conveyor, the first mesh chain conveyor and the second mesh chain conveyor limit the food in the vertical direction to keep the food inside the cooking oil for continued frying. Step S3: After frying, the food leaves the cooking oil and enters the cooling channel inside the top cover by moving upward along the inclined section behind the first mesh conveyor. The vibration of the first mesh conveyor in the cooling channel causes the food debris and oil droplets attached to the surface of the food to detach from the surface. The airflow in the left and right directions in the cooling channel blows away the food debris and oil droplets and lowers the temperature of the food. Step S4: The food passes through the opening on the rear side of the top cover and falls off above the first mesh conveyor.

[0015] The present invention has the following advantages: 1. The first mesh chain is mechanically vibrated to throw oil droplets and debris off the food surface. Combined with high-speed airflow, the oil droplets and debris are carried away. The combination of vibration and airflow reduces the amount of debris and oil droplets on the upper and sides of the food. The debris and oil droplets can be recycled, reducing production costs and lowering the oil content of the food, thus improving the health of consumers. 2. After food is cooled by airflow, it helps to shorten the subsequent cooling time, which shortens the time from frying to packaging and improves food production efficiency; 3. During maintenance, the lifting device drives the upper housing to rise, making the originally tilted and folded first and second connecting rods vertical, thereby increasing the vertical distance between the upper housing and the second mesh chain conveyor; 4. Since the height difference between the first link in the folded state and the vertical state is greater than the height difference between the second link in the folded state and the vertical state, the distance between the first mesh conveyor and the second mesh conveyor will be greater during maintenance than the distance during frying, which facilitates maintenance. 5. During maintenance, the first mesh conveyor and heating pipes are removed from the heating tank, facilitating inspection and maintenance. 6. Use a chain plate conveyor in conjunction with frying before the chain mesh conveyor to fry out a hard crust first, preventing subsequent food from sticking to the mesh chain; 7. The scraper continuously scrapes up food debris from the bottom surface of the frying tank and conveys it backward. The food debris moves upward along the inclined surface at the back of the frying tank and leaves the inside of the frying tank, which improves the quality of the cooking oil in the frying tank. 8. The circulating pump drives the cooking oil in the frying tank to flow from front to back, making the temperature of the frying tank more uniform. At the same time, the flowing cooking oil also replaces the oil adhering to the surface of the food, ensuring that the cooking oil is in continuous contact with the high temperature, thus improving the frying effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0017] Figure 1 : A schematic diagram of the main structure of the present invention in the frying state (the upper shell is not shown); Figure 2 :exist Figure 1 Schematic diagram of the cross-sectional structure at point AA; Figure 3 : Figure 2 A magnified view of the structure at point B in the middle; Figure 4: Figure 2 A magnified schematic diagram of the local structure at point C; Figure 5 : Figure 2 A magnified schematic diagram of the local structure at point D; Figure 6 : Figure 1 A three-dimensional structural diagram (first-person perspective); Figure 7 : Figure 1 A schematic diagram of the three-dimensional structure (second perspective); Figure 8 : Figure 1 A schematic diagram of the three-dimensional structure (third-person perspective); Figure 9 : A three-dimensional structural diagram of the present invention in maintenance condition (upper housing not shown). Figure 10 :exist Figure 9 A magnified schematic diagram of the local structure at point E; Figure 11 : A three-dimensional structural diagram of the present invention in maintenance mode (chain plates and mesh chains are not shown). Figure 12 : Figure 11 A magnified schematic diagram of the structure at point F in the middle. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and examples: Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. like Figures 1 to 12 As shown, a frying system includes: a frame 1, a chain conveyor 2, a first mesh conveyor 3, a second mesh conveyor 4, a frying tank 10, a cam 14, a rotating shaft 15, and a first motor. The frying tank 10 is located in the frame 1 and is fixedly connected to the frame 1. The chain conveyor 2 and the first mesh conveyor 3 are located inside the frying tank 10 and are arranged in a straight line along the front-to-back direction. The second mesh conveyor 4 is located above the first mesh conveyor 3. The conveying direction of the chain conveyor 2, the first mesh conveyor 3, and the second mesh conveyor 4 is from front to back. The rear sides of the first mesh conveyor 3 and the second mesh conveyor 4 are respectively inclined upwards away from the interior of the frying tank 10. The inner side of the upper layer of the first mesh chain 31 at the inclined rear side of the first mesh conveyor 3 contacts the cam 14. The cam 14 is fixedly connected to the rotating shaft 15. The rotating shaft 15 is rotatably connected to the first frame 32 of the first mesh conveyor 3. The first motor drives the rotating shaft 15 to rotate.

[0021] During operation, the frying tank 10 contains hot cooking oil, and food is introduced from the front ( Figure 2 The food (from the left side) enters the frying tank 10 and moves backward until it leaves the frying tank 10 after frying is complete. During this process, the food first contacts the chain conveyor 21, and both the surface of the food in contact with the chain 21 and the upper part that is not in contact are fried into a crispy shell. The crispy shell is less sticky than the surface of unfried food, preventing the food from sticking to the surface of the mesh chain during subsequent frying. After the food enters between the first mesh chain conveyor 3 and the second mesh chain conveyor 4, the first mesh chain conveyor 3 and the second mesh chain conveyor 4 limit the food vertically, keeping the food inside the edible oil between the first mesh chain conveyor 3 and the second mesh chain conveyor 4, preventing the food from sinking or floating. During the frying process, the linear speed of the first mesh chain 31 of the first mesh chain conveyor 3 and the second mesh chain 41 of the second mesh chain conveyor 4 is the same, thus avoiding the food surface being rubbed off due to the speed difference between the two.

[0022] After frying, the food continues to move along the conveying direction of the first mesh conveyor 3, and leaves the cooking oil upwards at the inclined rear end. The continuously rotating cam 14 drives the first mesh chain 31 to vibrate, causing the debris and excess cooking oil on the surface of the food to fall into the frying tank 10, reducing the debris attached to the food and improving food quality; at the same time, the cooking oil is recovered, reducing the oil content of the fried food.

[0023] like Figure 2 and Figure 5 As shown, multiple cams 14 are arranged from front to back, and the cams 14 rotate at the same speed. The mounting angles of two adjacent cams 14 in the front-to-back direction are different, thereby improving the vibration effect generated when food passes over the multiple cams 14. Figure 5 As shown, when the leftmost cam 14 is at its highest point, its rear side ( Figure 2 The right side of the middle section is not at the highest point, and the two cams 14 are installed at different angles.

[0024] like Figure 5 and Figure 8 As shown, it also includes a top cover 13, which is located above the inclined rear side of the first mesh conveyor 3. The left and right sides of the top cover 13 are fixedly connected to the first frame 32, respectively. A cooling channel is formed between the top cover 13 and the first mesh conveyor 3. Air inlets 131 and air outlets 132, which are connected to the cooling channel, are formed on the left and right sides of the top cover 13, respectively. The air inlets 131 are connected to a fan or air pump. After frying, the debris and oil droplets on the upper part of the food cannot fall downwards like the lower part of the food. The high-speed airflow entering the cooling channel through the air inlets 131 blows the debris and oil droplets that have been shaken off the food away from the surface of the food (including the upper and side layers), thereby reducing the amount of debris attached to the food surface and the oil content of the food. After the food is cooled by the airflow, it is beneficial to shorten the subsequent cooling time, shorten the time from frying to packaging, and improve food production efficiency.

[0025] Food scraps and oil droplets leave the cooling channel through outlet 132. The airflow passes through a second filter device, which intercepts the scraps and oil droplets before discharging the airflow. The scraps and oil droplets intercepted by the second filter device can be conveyed to a filter press to recover the edible oil for continued use in food processing or as biofuel.

[0026] Preferably, the airflow passes through a first filter device before entering the air inlet 131 to filter bacteria in the air and reduce the impact of bacteria on food.

[0027] Furthermore, it also includes an upper housing 5, a lifting device 6, a first connecting rod 51, and a second connecting rod. The upper housing 5 is located above the frying tank 10. The lifting device 6 drives the upper housing 5 to move vertically relative to the frying tank 10. The second mesh conveyor 4 is located below the upper housing 5. The left and right sides of the second frame 42 of the second mesh conveyor 4 are rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is rotatably connected to the upper housing 5. The left and right sides of the frame 1 respectively form upper support surfaces 105, which are used to support the lower side of the upper housing 5. The left and right sides of the frying tank 10 respectively form lower support surfaces 106, which are used to support the second frame 42. The upper support surface 105 is higher than the lower support surface 106. When frying, the horizontal distance between the axes (i.e., the hinge points at both ends) of the second connecting rod is greater than 0. The left and right sides of the first frame 32 of the first mesh conveyor 3 and the left and right sides of the frame of the chain conveyor 2 are respectively rotatably connected to one end of different first connecting rods 51. The other end of the first connecting rod 51 is rotatably connected to the upper housing 5. The inner walls of the left and right sides of the frying tank 10 are respectively fixedly connected to the first support plate 104, which is used to support the first frame 32. The lower support surface 106 is higher than the first support plate 104. In the frying state, the horizontal distance between the axes (i.e., the hinge points at both ends) of the first connecting rod 51 is greater than 0, so the first connecting rod 51 will be folded in the frying state, that is, tilted in the horizontal direction. The second connecting rod is not shown in the figure, and its working principle is the same as that of the first connecting rod 51.

[0028] During operation, the upper housing 5 is fastened above the frame 1, thereby sealing the left and right sides and the top of the frying tank 10, allowing food and oil fumes to enter and exit only from the front and rear ends. At this time, the first frame 32 of the first mesh conveyor 3 is supported by multiple first support plates 104 on the front, back, left, and right sides.

[0029] During frying, the lower ends of the left and right sides of the upper shell 5 are respectively attached to the upper support surface 105, and the lower ends of the left and right sides of the second frame 42 are respectively attached to the support surface 106. At this time, the second connecting rod is folded and tilted. During the process of the upper shell 5 rising to the maintenance state, the second connecting rod gradually straightens like the first connecting rod 51. After the second connecting rod is fully straightened, the upper shell 5 drives the second connecting rod and the second mesh conveyor 4 to continue to move upward synchronously for a certain distance before stopping. At this time, the vertical gap between the second mesh conveyor 4 and the upper shell 5 is greater than that in the frying state, which facilitates maintenance by the staff.

[0030] During maintenance, the lifting device 6 drives the upper housing 5 upwards, disengaging the left and right sides of the upper housing 5 from the frame 1, creating gaps to facilitate maintenance work. As the first mesh conveyor 3 is driven upwards by the upper housing 5, the originally folded and tilted first connecting rod 51 gradually straightens, that is, the direction of the first connecting rod 51 becomes vertical. The fully vertical first connecting rod 51 is then pulled upwards by the upper housing 5, which is hinged to it, for a certain distance before stopping. This increases the vertical gap between the first mesh conveyor 3, the second mesh conveyor 4, and the upper housing 5, thus facilitating maintenance of the first mesh conveyor 3 and the second mesh conveyor 4 by the workers.

[0031] The lifting device 6 can be an electric push rod as shown in the figure, or it can be an existing device such as a hydraulic cylinder, an electric screw, or an electric hoist lifting mechanism.

[0032] like Figure 2 and Figure 9 As shown, it also includes a heating tube 7 and a third frame 71, which are located below the first mesh conveyor 3. The heating tube 7 is fixedly connected to the third frame 71, and the third frame 71 is fixedly connected to the first frame 32. The heating tube 7 heats the edible oil in the frying tank 10, keeping the edible oil within a reasonable temperature range. The heating tube 7 can be an electric heating tube or an oil pipe with flowing heat-conducting oil inside.

[0033] like Figure 9 and Figure 10 As shown, it also includes a second support block 72, which is fixedly connected to the first frame 32 or the third frame 71. The first support plate 104 is used to support the second support block 72. When frying, the height difference between the first mesh conveyor 3 and the second mesh conveyor 4 is smaller than the height difference between the first mesh conveyor 3 and the second mesh conveyor 4 when under maintenance. Therefore, when the upper shell 5 is raised for maintenance, the vertical gap between the first mesh conveyor 3 and the second mesh conveyor 4 is also greater than that in the frying state, which facilitates maintenance by the staff.

[0034] like Figure 3 As shown, the outer side of the chain plate 21 of the chain conveyor 2 is fixedly connected to the anti-stick plate 22. The chain plate 21 is made of stainless steel to reduce friction damage when connected to the chain. The anti-stick plate 22 is made of polytetrafluoroethylene (PTFE) to reduce adhesion when in contact with food. During frying, the heating tube 7 adjusts its own temperature to control the oil in the frying tank 10 within a temperature range that will not damage the PTFE.

[0035] Furthermore, it also includes a bottom scraping device 8 and a slag discharge pipe 103. The rear end of the first mesh conveyor 3 extends to the rear side of the frying tank 10 to transport food to a conveyor belt or storage bin, and then transfer the food to the next process. The bottom scraping device 8 includes a drive sprocket 81, a bottom scraping chain 82, scrapers 83, a driven wheel 84, and a guide wheel 85. Multiple scrapers 83 are arranged between the bottom scraping chains 82 on the left and right sides. The scrapers 83 are fixedly connected to the bottom scraping chains 82 on the left and right sides respectively, and the scrapers 83 are far away from the bottom scraping chains 82. One side of the scraping chain 82 contacts the bottom surface of the frying tank 10. The driven wheel 84 and the guide wheel 85 are rotatably connected to the frying tank 10 through shafts. The drive sprocket 81 is rotatably connected to the frame 1 through a shaft. The motor drives the drive sprocket 81 to rotate. The drive sprocket 81 drives the scraping chain 82 to move. The rear end of the scraping chain 82 tilts upward and leaves the interior of the frying tank 10. The rear end of the scraping chain 82 is located above the slag discharge pipe 103. The slag discharge pipe 103 runs vertically through the frying tank 103 and is fixedly connected to the frame 1.

[0036] During frying, food scraps will fall through the gaps in the chain plate 21 and the holes in the mesh chain, accumulating at the bottom of the frying tank 10. To prevent food scraps from affecting the quality of the cooking oil, the drive sprocket 81 continuously drives the scraper chain 82, causing the scraper 83 to move from front to back on the bottom surface of the frying tank 10. The scraper 83 scrapes up the food scraps on the bottom surface of the frying tank 10 and conveys them backward. The food scraps move upward at an angle along the slope on the rear side of the frying tank 10, leaving the interior of the frying tank 10. Afterward, the food scraps fall into the slag discharge pipe 103 and fall down along the slag discharge pipe 103 into the container below for storage.

[0037] like Figure 2 and Figure 4 As shown, it also includes a mesh plate 11, an oil inlet pipe 101, an oil outlet pipe 102, and an oil outlet groove 107. The bottom of the frying tank 10 has an oil outlet groove 107 formed downwards. The oil outlet groove 107 is fixedly connected to and communicates with the oil outlet pipe 102. The oil inlet pipe 101 is fixedly connected to and communicates with the side of the frying tank 10. The height of the oil inlet pipe 101 is higher than that of the oil outlet pipe 102. The mesh plate 11, which is inclined upwards at the rear end, is located above the oil outlet groove 107. The mesh plate 11 is located inside the frying tank 10 and is fixedly connected to the frying tank 10. The scraper 83 is located above the mesh plate 11 and is slidably connected to the mesh plate 11.

[0038] When food scraps leave the frying tank 10, they pass over the upward-sloping mesh plate 11. After the food scraps leave the oil, the edible portion carried by the scraps drips down through the holes in the mesh plate 11, while the oil continues to fall back into the frying tank 10. This reduces the amount of oil carried away by the food scraps, thus saving oil. The oil inlet pipe 101 and the oil outlet pipe 102 are normally closed, and they are only opened when oil is being added to or removed from the frying tank 10, respectively.

[0039] like Figure 2 , Figure 3 and Figure 6 As shown, it also includes a circulation pump 12, an inlet pipe 121 and an outlet pipe 122. The oil inlet of the circulation pump 12 is connected to the inlet pipe 121, the inlet pipe 121 is connected to the rear end of the inside of the frying tank 10, the oil outlet of the circulation pump 12 is connected to the outlet pipe 122, and the outlet pipe 122 is connected to the front end of the inside of the frying tank 10.

[0040] The circulating pump 12 draws in cooking oil from the rear frying tank 10 through the inlet pipe 121 and pumps it out. The pumped oil then enters the front end of the frying tank 10 through the outlet pipe 122, thereby driving the cooking oil in the frying tank 10 to flow from front to back, making the temperature of the frying tank 10 more uniform. At the same time, the flowing cooking oil also replaces the oil adhering to the surface of the food, ensuring that the cooking oil is continuously in contact with the high-temperature cooking oil, thus improving the frying effect.

[0041] like Figures 7 to 9 As shown, it also includes an extraction pipe 9, which is fixedly connected to the frame 1. During frying, although the frame 1 and the upper shell 5 are in contact in the left and right directions to provide a seal, and the frame 1 and the upper shell 5 are also sealed vertically, as a frying conveyor line, food needs to pass through from front to back, so oil fumes will escape from the front and back openings. In order to reduce the pollution of the factory's internal environment by oil fumes, the extraction pipe 9 is connected to an extraction fan to create a negative pressure inside the frame 1 and the upper shell 5, reducing the leakage of oil fumes.

[0042] A method of operating a frying system includes the following steps: Step S1: After the food enters the cooking oil in the frying tank 10, it first comes into contact with the anti-stick plate 22 on the outside of the chain plate 21 of the chain conveyor 2, and the outer surface of the food is fried into a crispy crust. Step S2: After the food leaves the chain conveyor 2 and enters between the first mesh chain conveyor 3 and the second mesh chain conveyor 4, the first mesh chain conveyor 3 and the second mesh chain conveyor 4 limit the food in the vertical direction to keep the food inside the cooking oil for continued frying. Step S3: After frying, the food leaves the cooking oil and enters the cooling channel inside the top cover 13 along the inclined section behind the first mesh conveyor 3. The vibration of the first mesh 31 in the cooling channel causes the food debris and oil droplets attached to the surface of the food to detach from the surface. The airflow in the left and right directions in the cooling channel blows away the food debris and oil droplets and lowers the temperature of the food. Step S4: The food passes through the rear opening of the top cover 13 and falls off from above the first mesh conveyor 3.

[0043] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A frying system, characterized in that, include: The machine includes a frame (1), a chain conveyor (2), a first mesh chain conveyor (3), a second mesh chain conveyor (4), a frying tank (10), a cam (14), a rotating shaft (15), and a first motor. The frying tank (10) is located in the frame (1) and is fixedly connected to the frame (1). The chain conveyor (2) and the first mesh chain conveyor (3) are located inside the frying tank (10) and are arranged in a straight line along the front-back direction. The second mesh chain conveyor (4) is located above the first mesh chain conveyor (3). The chain conveyor (2) and the first mesh chain conveyor (4) are... (3) The conveying direction of the first mesh conveyor (3) and the second mesh conveyor (4) is from front to back. The rear sides of the first mesh conveyor (3) and the second mesh conveyor (4) are respectively inclined upward away from the inside of the frying tank (10). The inner side of the upper layer of the first mesh chain (31) at the rear inclined side of the first mesh conveyor (3) is in contact with the cam (14). The cam (14) is fixedly connected to the rotating shaft (15). The rotating shaft (15) is rotatably connected to the first frame (32) of the first mesh conveyor (3). The first motor drives the rotating shaft (15) to rotate.

2. The frying system according to claim 1, characterized in that: Multiple cams (14) are arranged from front to back, and the cams (14) rotate at the same speed. The installation angles of two adjacent cams (14) in the front-back direction are different.

3. The frying system according to claim 1, characterized in that: It also includes a top cover (13), which is located above the inclined rear side of the first mesh conveyor (3). The top cover (13) is fixedly connected to the first frame (32) on the left and right sides respectively. A cooling channel is formed between the top cover (13) and the first mesh conveyor (3). An air inlet (131) and an air outlet (132) connected to the cooling channel are formed on the left and right sides of the top cover (13) respectively. The air inlet (131) is connected to a fan or air pump.

4. The frying system according to claim 1, characterized in that: It also includes an upper shell (5), a lifting device (6), a first connecting rod (51) and a second connecting rod. The upper shell (5) is located above the frying tank (10). The lifting device (6) drives the upper shell (5) to move up and down relative to the frying tank (10). The second mesh conveyor (4) is located below the upper shell (5). The left and right sides of the second frame (42) of the second mesh conveyor (4) are rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is rotatably connected to the upper shell (5). The left and right sides of the frame (1) are respectively formed with upper support surfaces (105). The upper support surfaces (105) are used to support the lower side of the upper shell (5). The left and right sides of the frying tank (10) are respectively formed with lower support surfaces (106). The lower support surfaces (106) are used to support the second frame (42). The upper support surface (105) is higher than the lower support surface (106). When frying, the horizontal distance between the axes rotatably connected at both ends of the second connecting rod is greater than 0. The left and right sides of the first frame (32) of the first mesh conveyor (3) and the left and right sides of the frame of the chain conveyor (2) are respectively rotatably connected to one end of a different first connecting rod (51). The other end of the first connecting rod (51) is rotatably connected to the upper shell (5). The inner walls of the left and right sides of the frying tank (10) are respectively fixedly connected to the first support plate (104). The first support plate (104) is used to support the first frame (32). The lower support surface (106) is higher than the first support plate (104). When frying, the horizontal distance between the axes rotatably connected at both ends of the first connecting rod (51) is greater than 0.

5. The frying system according to claim 4, characterized in that: It also includes a heating tube (7) and a third frame (71), which are located below the first mesh conveyor (3). The heating tube (7) is fixedly connected to the third frame (71), and the third frame (71) is fixedly connected to the first frame (32). It also includes a second support block (72), which is fixedly connected to the first frame (32) or the third frame (71). The first support plate (104) is used to support the second support block (72). When frying, the height difference between the first mesh conveyor (3) and the second mesh conveyor (4) is less than the height difference between the first mesh conveyor (3) and the second mesh conveyor (4) when under maintenance.

6. The frying system according to claim 1, characterized in that: The chain plate (21) of the chain conveyor (2) is fixedly connected to the anti-stick plate (22) on the outside. The chain plate (21) is made of stainless steel and the anti-stick plate (22) is made of polytetrafluoroethylene.

7. The frying system according to claim 1, characterized in that: It also includes a bottom scraping device (8) and a slag discharge pipe (103). The rear end of the first mesh conveyor (3) extends to the rear side of the frying tank (10). The bottom scraping device (8) includes a drive sprocket (81), a bottom scraping chain (82), a scraper (83), a driven wheel (84), and a guide wheel (85). Multiple scrapers (83) are arranged between the bottom scraping chains (82) on the left and right sides. The scrapers (83) on the left and right sides are respectively fixedly connected to the bottom scraping chains (82). The side of the scraper (83) away from the bottom scraping chains (82) is in contact with the bottom surface of the frying tank (10). The driven wheel (84) and the guide wheel (85) are rotatably connected to the frying tank (10) via shafts, and the driving sprocket (81) is rotatably connected to the frame (1) via shafts. The motor drives the driving sprocket (81) to rotate, and the driving sprocket (81) drives the bottom scraping chain (82) to move. The rear end of the bottom scraping chain (82) is tilted upward and leaves the inside of the frying tank (10). The rear end of the bottom scraping chain (82) is located above the slag discharge pipe (103). The slag discharge pipe (103) is vertically connected and is fixedly connected to the frame (1).

8. The frying system according to claim 7, characterized in that: It also includes a mesh plate (11), an oil inlet pipe (101), an oil outlet pipe (102), and an oil outlet groove (107). The bottom of the frying tank (10) forms an oil outlet groove (107) facing downwards. The oil outlet groove (107) is fixedly connected to and communicates with the oil outlet pipe (102). The oil inlet pipe (101) is fixedly connected to and communicates with the side of the frying tank (10). The height of the oil inlet pipe (101) is higher than that of the oil outlet pipe (102). The mesh plate (11) with its rear end tilted upwards is located above the oil outlet groove (107). The mesh plate (11) is located inside the frying tank (10) and is fixedly connected to the frying tank (10). The scraper (83) is located above the mesh plate (11) and is slidably connected to the mesh plate (11).

9. A frying system according to claim 8, characterized in that: It also includes a circulation pump (12), an inlet pipe (121) and an outlet pipe (122). The oil inlet of the circulation pump (12) is connected to the inlet pipe (121), the inlet pipe (121) is connected to the rear end of the frying tank (10), the oil outlet of the circulation pump (12) is connected to the outlet pipe (122), and the outlet pipe (122) is connected to the front end of the frying tank (10).

10. A method of operating the frying system as described in claim 3, characterized in that, Includes the following steps: Step S1: After the food enters the edible oil in the frying tank (10), it first comes into contact with the anti-stick plate (22) on the outside of the chain plate (21) of the chain plate conveyor (2), and the outer surface of the food is fried into a crispy shell. Step S2: After the food leaves the chain conveyor (2) and enters between the first mesh chain conveyor (3) and the second mesh chain conveyor (4), the first mesh chain conveyor (3) and the second mesh chain conveyor (4) limit the food vertically so that the food remains inside the cooking oil and continues to be fried. Step S3: After frying, the food leaves the cooking oil and enters the cooling channel inside the top cover (13) along the inclined section behind the first mesh conveyor (3). The vibration of the first mesh chain (31) in the cooling channel causes the food debris and oil droplets attached to the surface of the food to detach from the surface of the food. The airflow in the left and right directions in the cooling channel blows away the food debris and oil droplets and lowers the temperature of the food. Step S4: The food passes through the rear opening of the top cover (13) and falls off above the first mesh conveyor (3).

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