Double tank type continuous frying machine

Abstract

The utility model provides a kind of double groove type fried dough stick continuous fryer, belong to the technical field of fried food machinery, including rack, feeding mesh belt, discharge mesh belt and two material pressing mesh belts;Rack is equipped with shell, two oil tanks that are separated and parallel are equipped in shell;Feeding mesh belt is located in rack and is inserted into one end of shell, feeding mesh belt is used to respectively correspond to convey two rows of fried dough stick green body that are placed horizontally on its upper surface to one of oil tank;Discharge mesh belt is located in rack and is inserted into the other end of shell, discharge mesh belt is used to discharge fried dough stick from shell after passing through two oil tanks;Two material pressing mesh belts are connected to shell and are respectively and one-to-one corresponding with two oil tanks, material pressing mesh belt is used to press and drive fried dough stick green body entering oil tank to tumble movement towards discharge mesh belt.The double groove type fried dough stick continuous fryer provided by the utility model not only can improve the tumbling movement stability of fried dough stick in oil tank, and then improve frying uniformity, but also is beneficial to energy saving and consumption reduction.

Description

Technical Field

[0001] This utility model belongs to the field of deep-frying food machinery technology, specifically relating to a double-groove continuous deep-frying machine for fried dough sticks. Background Technology

[0002] Fried dough sticks, a widely popular type of noodle, are usually eaten fresh after frying. However, the mini meat-filled fried dough sticks made for hot pot are pre-made products. These sticks are made by stir-frying and crushing fennel seeds before adding them to the dough. Some recipes also add eggs and cooking oil to enhance crispiness. After fermentation, they are deep-fried, resulting in a chewy texture that doesn't easily fall apart, making them suitable for hot pot. Because mini meat-filled fried dough sticks are often mass-produced, their frying process primarily utilizes large-scale continuous frying equipment.

[0003] Currently, continuous frying equipment for fried dough sticks uses an oil tank several meters or even tens of meters long. A mesh belt presses down on the floating dough sticks, and the friction of the belt moves them within the tank. However, existing equipment has two main drawbacks. First, the parallel dough sticks in the width of the oil tank collide and interfere with each other, causing some to tilt or turn. In this case, the mesh belt can only move them forward but cannot stabilize them, affecting the uniformity of frying. Second, the entire oil tank requires a large amount of frying oil, which is wasteful and energy-intensive for heating, hindering energy conservation and cost reduction. Utility Model Content

[0004] This utility model provides a double-groove continuous frying machine for fried dough sticks, which aims to improve the uniformity of frying and energy efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a double-groove continuous frying machine for fried dough sticks, comprising: The frame is fixedly connected to a horizontally extending outer shell. The bottom of the outer shell is raised in the middle, dividing its inner cavity into two parallel mounting cavities. Each mounting cavity is provided with an oil trough suitable for the horizontal passage of the fried dough sticks. The feeding conveyor belt is located on the frame and extends into the outer shell. The feeding conveyor belt is used to transport the two rows of raw dough sticks that are placed horizontally on their upper surface to one of the oil tanks respectively. The discharge mesh belt is located on the frame and extends into the outer shell at the other end. The discharge mesh belt is used to discharge the cooked fried dough sticks that have passed through the two oil tanks from the outer shell. Two pressing mesh belts are connected to the outer shell and correspond one-to-one with the two oil tanks. The pressing mesh belts are used to press down and drive the raw dough sticks entering the oil tanks to roll towards the discharge mesh belt.

[0006] In one possible implementation, the two ends of each pressing mesh belt are located above the feed mesh belt and the discharge mesh belt, respectively. One end of the pressing mesh belt forms a feed channel with the feed mesh belt, and the other end forms a discharge channel with the discharge mesh belt.

[0007] In some embodiments, one end of the housing is provided with a discharge chute, one end of which is located below the end of the discharge mesh belt that extends out of the housing, and the other end extends downward at an angle toward the outside of the housing.

[0008] In one possible implementation, the double-groove continuous frying machine for fried dough sticks also includes a controller, which is fixed to the frame. The feed conveyor belt, the discharge conveyor belt, and the two pressing conveyor belts are all controlled by the controller.

[0009] For example, the housing is provided with a fume hood, and the frame is provided with a lifting drive for driving the fume hood to rise and fall. The lifting drive is electrically connected to the controller. The fume hood has a lower closed state that covers the housing and an upper open state that is raised above the housing.

[0010] For example, the smoke hood is equipped with a smoke exhaust pipe, which is connected to a fire damper. A temperature sensor is installed inside the smoke exhaust pipe. Both the fire damper and the temperature sensor are electrically connected to the controller. The fire damper is used to close when the temperature sensor detects a value that exceeds a set value.

[0011] In some embodiments, the fume hood is provided with at least one fireproof pipe extending from one end to the other, one end of which protrudes from the fume hood and is used to connect to a carbon dioxide gas cylinder, and the fireproof pipe has several exhaust holes with its wall facing downwards.

[0012] For example, the fireproof pipe is equipped with a switch valve, which is electrically connected to the controller and is used to open when the temperature sensor detects a value that exceeds a set value.

[0013] For example, the outer casing is equipped with an electric heating element that extends into two oil tanks, and both oil tanks are connected to a level switch. Both the level switch and the electric heating element are electrically connected to the controller. The electric heating element automatically cuts off power when the level switch detects a value below a set range.

[0014] In some embodiments, temperature sensing elements are connected to the bottom of both oil tanks, and the temperature sensing elements are electrically connected to the controller; wherein, the electric heating tube is turned on when the detected value of the temperature sensing element is lower than the target range, and turned off when the detected value is within the target range.

[0015] The beneficial effects of the double-trough continuous frying machine for fried dough sticks provided by this utility model are as follows: Compared with the prior art, the double-trough continuous frying machine for fried dough sticks of this utility model uses the frame as the support foundation for the entire machine. It utilizes two parallel mounting cavities on the outer shell to install an oil trough suitable for the transverse passage of fried dough sticks. This allows two rows of raw fried dough sticks to enter one of the oil troughs through the feeding mesh belt, thereby avoiding interference between the two parallel rows of fried dough sticks and causing them to tilt or turn. The raw fried dough sticks are steadily rolled forward in the oil trough by the downward pressure of the pressing mesh belt. Finally, the fried dough sticks are discharged through the discharge mesh belt. Compared with the traditional whole oil tank structure, this not only improves the uniformity of frying the fried dough sticks, but also reduces the amount of frying oil required by the two separate parallel oil troughs when the liquid level is the same as that of the whole oil tank. Therefore, it can reduce the amount of oil consumed and thus reduce the energy consumption of oil heating, which has significant advantages in terms of energy saving and consumption reduction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the double-groove continuous frying machine for fried dough sticks provided in an embodiment of the present invention; Figure 2 A top view of the outer shell and inner liner of the double-groove continuous frying machine for fried dough sticks provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of the layout structure of the feed conveyor belt, discharge conveyor belt and pressing conveyor belt in the oil tank used in the embodiment of this utility model; Figure 4 This is a side view of the structure of the double-groove continuous frying machine for fried dough sticks provided in an embodiment of the present invention.

[0017] In the diagram: 10. Frame; 11. Outer shell; 12. Oil tank; 121. Liquid level switch; 122. Temperature sensing element; 13. Discharge chute; 20. Feed conveyor belt; 200. Feed channel; 30. Discharge conveyor belt; 300. Discharge channel; 40. Pressing conveyor belt; 50. Controller; 60. Fume hood; 61. Exhaust pipe; 62. Fireproof valve; 63. Temperature sensor; 64. Fireproof pipe; 65. Switch valve; 70. Lifting drive component; 80. Electric heating element. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] It should be noted that when an element is referred to as being "set on" or "connected to" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0020] Please refer to the following: Figures 1 to 4 The present invention will now describe the double-groove continuous frying machine for fried dough sticks. The double-groove continuous frying machine for fried dough sticks includes a frame 10, an infeed conveyor belt 20, an outlet conveyor belt 30, and two pressing conveyor belts 40. A horizontally extending outer shell 11 is fixedly connected to the frame 10. A protrusion at the center of the bottom of the outer shell 11 divides its internal cavity into two parallel mounting chambers. Each mounting chamber is equipped with an oil trough 12 suitable for the transverse passage of the fried dough sticks. The infeed conveyor belt 20 is located on the frame 10 and extends into one end of the outer shell 11. The infeed conveyor belt 20 is used to transport two rows of horizontally placed raw fried dough sticks to one of the oil troughs 12. The outlet conveyor belt 30 is located on the frame 10 and extends into the other end of the outer shell 11. The outlet conveyor belt 30 is used to discharge the cooked fried dough sticks that have passed through the two oil troughs 12 from the outer shell 11. The two pressing conveyor belts 40 are connected to the outer shell 11 and correspond one-to-one with the two oil troughs 12. The pressing conveyor belts 40 are used to press down and drive the raw fried dough sticks entering the oil troughs 12 to tumble towards the outlet conveyor belt 30.

[0021] It should be explained that in this embodiment, the feed conveyor belt 20, the discharge conveyor belt 30, and the two pressing conveyor belts 40 are all food-grade stainless steel conveyor belts with drive structures. The drive structure includes a motor-driven drive shaft, a driven shaft, and several guide shafts. The drive shaft and driven shaft are located at both ends of the conveyor belt, and each guide shaft is used to guide the conveyor belt to form a predetermined extension path. The arrangement and driving method of each conveyor belt are common techniques in the field and are not innovative points of this application, and will not be described in detail here.

[0022] It should be noted that in this embodiment, both the feed mesh belt 20 and the discharge mesh belt 30 can be single mesh belts that can cover the width of the two oil tanks 12, or they can be set up separately for the two oil tanks 12 for feeding and discharging. No specific limitation is made here.

[0023] The working process of the double-trough continuous frying machine for fried dough sticks provided in this embodiment is as follows: Two rows of raw dough sticks placed along the width of the feeding mesh belt 20 enter the outer shell 11 under the drive of the feeding mesh belt 20 and enter two oil troughs 12 respectively. The raw dough sticks are fried and puffed in the oil troughs 12, float upwards and contact the pressing mesh belt 40. The pressing mesh belt 40 plays the role of pushing the dough sticks forward. The dough sticks are pushed forward by the pressing mesh belt 40 and thus form a forward rolling motion. Finally, the discharge mesh belt 30 lifts the fried dough sticks out of the oil troughs 12 and sends them out of the outer shell 11. The feeding mesh belt 20 continuously feeds and the discharge mesh belt 30 continuously discharges, thus forming a continuous frying operation. The time it takes for the dough sticks to pass through the oil troughs 12 can be controlled by adjusting the running speed of the pressing mesh belt 40, thereby controlling the frying time.

[0024] Compared with the prior art, the double-trough continuous frying machine for fried dough sticks provided in this embodiment uses the frame 10 as the support base for the whole machine installation. Two parallel mounting cavities of the outer shell 11 are used to install an oil trough 12 suitable for the transverse passage of fried dough sticks. This allows two rows of raw fried dough sticks to enter one of the oil troughs 12 through the feeding mesh belt 20, thereby avoiding interference between the two parallel rows of fried dough sticks and causing them to tilt or turn. The raw fried dough sticks are stably rolled forward in the oil trough 12 by the downward pressure of the pressing mesh belt 40. Finally, the fried dough sticks are discharged through the discharge mesh belt 30. Compared with the traditional whole oil tank structure, this not only improves the uniformity of fried dough sticks, but also the two parallel oil troughs 12 require less frying oil when the liquid level is the same as that of the whole oil tank. Therefore, it can reduce oil consumption and thus reduce the energy consumption of oil heating, which has significant advantages in terms of energy saving and consumption reduction.

[0025] In some embodiments, see Figure 3 Each pressing mesh belt 40 has its two ends located above the feeding mesh belt 20 and the discharging mesh belt 30, respectively. One end of the pressing mesh belt 40 forms a feeding channel 200 with the feeding mesh belt 20, and the other end forms a discharging channel 300 with the discharging mesh belt 30.

[0026] Because the raw dough sticks lack buoyancy and sink in the frying oil before puffing, a feeding channel 200 is formed by one end of the pressing mesh belt 40 and the feeding mesh belt 20. This allows the raw dough sticks to be propelled forward by the feeding mesh belt 20 and the pressing mesh belt 40 within the feeding channel 200 before puffing, thus ensuring smooth feeding. During discharge, the discharge mesh belt 30 and the pressing mesh belt 40 work together to support the cooked dough sticks, allowing them to float smoothly above the surface of the frying oil through the discharge channel 300. This prevents insufficient contact between the cooked dough sticks and the discharge mesh belt 30 during the discharge process, which would otherwise affect the smoothness of discharge.

[0027] It should be noted that, as Figure 1 As shown, one end of the outer shell 11 is provided with a discharge chute 13. One end of the discharge chute 13 is located below the end of the discharge mesh belt 30 that extends out of the outer shell 11, and the other end extends downward at an angle toward the outside of the outer shell 11.

[0028] Since the discharge conveyor belt 30 extends upward at an angle to carry the cooked fried dough sticks above the surface of the frying oil, a discharge chute 13 is set up to connect with it, so that the cooked fried dough sticks discharged from the discharge conveyor belt 30 automatically fall into the discharge chute 13. Then, the slope of the discharge chute 13 is used to make the cooked fried dough sticks automatically slide into the receiving cart or receiving basket, which helps to improve the convenience of receiving.

[0029] For some possible implementations, please refer to [link / reference]. Figure 1 The double-groove continuous frying machine for fried dough sticks also includes a controller 50, which is fixed to the frame 10. The feeding conveyor belt 20, the discharging conveyor belt 30, and the two pressing conveyor belts 40 are all controlled by the controller 50. As a large-scale continuous frying equipment, by configuring the controller 50 to regulate the speed of the feeding conveyor belt 20, the discharging conveyor belt 30, and the pressing conveyor belt 40, it is possible not only to ensure the matching of the feeding and discharging speeds, but also to flexibly adjust the frying time (the speed of the pressing conveyor belt 40), thereby meeting the needs of different frying processes.

[0030] In some embodiments, please refer to Figure 1 and Figure 4 The outer casing 11 is provided with a smoke hood 60, and the frame 10 is provided with a lifting drive 70 for driving the smoke hood 60 to rise and fall. The lifting drive 70 is electrically connected to the controller 50. The smoke hood 60 has a lower closed state that covers the outer casing 11 and an upper open state that is raised above the outer casing 11.

[0031] The lifting drive 70 can be a motor equipped with transmission components such as sprockets and chains (the chain is connected to the fume hood 60) and gears and racks (the rack is connected to the fume hood 60). The lifting drive 70 drives the fume hood 60 to rise and fall. This allows the fume hood 60 to be lowered to the closed position during the rolling process. On the one hand, this prevents the oil fumes generated during frying from drifting and polluting the environment. On the other hand, it reduces the heat loss of the frying oil in the oil tank 12 after the fume hood 60 covers the outer shell 11, thus helping to reduce the heating energy consumption of the frying oil. When maintenance or cleaning of the oil tank 12 is required, the lifting drive 70 can drive the fume hood 60 to the open position, which facilitates operation.

[0032] As one specific embodiment of the aforementioned fume hood 60, please refer to Figure 1 and Figure 4 The smoke hood 60 is equipped with a smoke exhaust pipe 61, and a fire damper 62 is connected to the smoke exhaust pipe 61. A temperature sensor 63 is installed inside the smoke exhaust pipe 61. Both the fire damper 62 and the temperature sensor 63 are electrically connected to the controller 50. The fire damper 62 is used to close when the detected value of the temperature sensor 63 exceeds the set value.

[0033] The function of the exhaust pipe 61 is to discharge the oil fumes collected by the fume hood 60 into the flue gas treatment system of the production workshop. At the same time, considering production safety, when the detection value of the temperature sensor 63 in the exhaust pipe 61 exceeds the set value during the frying process, it can be determined that a fire has occurred in the oil tank 12 (an abnormality in the oil heating system, such as the electric heating tube 80, can cause a fire). At this time, the controller 50 receives the detection signal from the temperature sensor 63 and promptly sends instructions to the lifting drive component 70 of the fume hood 60 and the fire damper 62. On the one hand, it ensures that the fume hood 60 is in the lower closed state, and on the other hand, it controls the fire damper 62 to close (the fire damper 62 is a normally open valve). This creates a sealed space between the fume hood 60 and the outer shell 11, which not only prevents the fire from spreading outward and causing a fire risk, but also prevents outside air from replenishing the sealed space and continuing the fire, thus achieving the purpose of oxygen-free fire extinguishing.

[0034] To further enhance fire safety, such as Figure 1 As shown, in this embodiment, the fume hood 60 is provided with at least one fireproof pipe 64 extending from one end to the other. One end of the fireproof pipe 64 extends out of the fume hood 60 and is used to connect to a carbon dioxide cylinder. The pipe wall of the fireproof pipe 64 has several exhaust holes facing downwards. In the event of a fire, the fireproof valve 62 is closed to form a sealed space between the fume hood 60 and the outer shell 11. Carbon dioxide can then be discharged into this sealed space through the fireproof pipe 64 to extinguish the fire, thereby preventing the fire from spreading further and improving fire safety.

[0035] It is important to understand that you should refer to [the relevant documentation / reference]. Figure 1In this embodiment, a switch valve 65 is provided on the fireproof pipe 64. The switch valve 65 is electrically connected to the controller 50 and is used to open when the detection value of the temperature sensor 63 exceeds a set value. Under normal circumstances, the switch valve 65 is in the closed state. When a fire occurs, the abnormal detection signal of the temperature sensor 63 is transmitted to the controller 50. The controller 50 then sends a control command to the switch valve 65, thereby enabling the switch valve 65 to open immediately and allow carbon dioxide gas to be discharged into the smoke hood 60 through the fireproof pipe 64, thereby improving the timeliness of the fire response.

[0036] Specifically, see Figure 2 and Figure 4 In this embodiment, the outer casing 11 is equipped with electric heating tubes 80 extending into two oil tanks 12, and each oil tank 12 is connected to a level switch 121. Both the level switch 121 and the electric heating tubes 80 are electrically connected to the controller 50. The electric heating tubes 80 automatically de-energize when the level detected by the level switch 121 is below a set range. The electric heating tubes 80 heat the frying oil in the oil tanks 12. When the level in the oil tanks 12 is too low, the electric heating tubes 80 will dry-burn, which can easily damage the electric heating tubes 80 and cause a fire. Therefore, by configuring the level switch 121 to detect the level of the frying oil in the oil tanks 12, once the level is below the set range, the level switch 121 is triggered to de-energize, and this signal is fed back to the controller 50. The controller 50 then de-energizes the electric heating tubes 80 until frying oil is added to the oil tanks 12 until the level returns to the set range, at which point heating can resume. This further improves safety performance.

[0037] For example, please refer to Figure 4 Both oil tanks 12 are connected to a temperature sensing element 122 at their bottoms, and the temperature sensing element 122 is electrically connected to the controller 50. The electric heating tube 80 is turned on when the detection value of the temperature sensing element 122 is lower than the target range and turned off when the detection value is within the target range.

[0038] The temperature sensing element 122 can specifically be a sensor for detecting temperature. The sensing end of the temperature sensing element 122 is in direct contact with the bottom wall of the oil tank 12, thereby detecting the temperature of the frying oil in the oil tank 12. The detection value of the temperature sensing element 122 is fed back to the controller 50 in real time. The controller 50 controls the start and stop of the electric heating tube 80 based on the detection value. This not only ensures the stability of the frying oil temperature, which is beneficial to improving the frying quality, but also avoids the electric heating tube 80 from operating ineffectively when the oil temperature meets the requirements, thus increasing energy consumption and improving energy efficiency.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-groove continuous frying machine for fried dough sticks, characterized in that, include: The frame is fixedly connected to a horizontally extending outer shell. The bottom of the outer shell is raised in the middle, dividing its inner cavity into two parallel mounting cavities. Each mounting cavity is provided with an oil groove suitable for the horizontal passage of fried dough sticks. A feeding conveyor belt is provided on the frame and extends into one end of the outer shell. The feeding conveyor belt is used to transport the two rows of raw dough sticks placed horizontally on their upper surfaces to one of the oil tanks respectively. A discharge mesh belt is provided on the frame and extends into the other end of the outer shell. The discharge mesh belt is used to discharge the cooked fried dough sticks that have passed through the two oil tanks from the outer shell. Two pressing mesh belts are connected to the outer shell and correspond one-to-one with the two oil tanks. The pressing mesh belts are used to press down and drive the raw dough sticks that have entered the oil tanks to roll towards the discharge mesh belt.

2. The double-groove continuous frying machine for fried dough sticks as described in claim 1, characterized in that, Each of the pressing mesh belts has its two ends located above the feeding mesh belt and the discharging mesh belt, respectively. One end of the pressing mesh belt forms a feeding channel with the feeding mesh belt, and the other end forms a discharging channel with the discharging mesh belt.

3. The double-groove continuous frying machine for fried dough sticks as described in claim 1, characterized in that, One end of the outer shell is provided with a discharge chute, one end of which is located below the end of the discharge mesh belt that extends out of the outer shell, and the other end extends downward at an angle toward the outside of the outer shell.

4. The double-groove continuous frying machine for fried dough sticks as described in any one of claims 1-3, characterized in that, The double-groove continuous frying machine for fried dough sticks also includes a controller, which is fixed to the frame. The feeding conveyor belt, the discharging conveyor belt, and the two pressing conveyor belts are all controlled by the controller.

5. The double-groove continuous frying machine for fried dough sticks as described in claim 4, characterized in that, The outer casing is provided with a smoke hood, and the frame is provided with a lifting drive for driving the smoke hood to rise and fall. The lifting drive is electrically connected to the controller. The smoke hood has a lower closed state that covers the outer casing and an upper open state that is raised above the outer casing.

6. The double-groove continuous frying machine for fried dough sticks as described in claim 5, characterized in that, The smoke hood is equipped with a smoke exhaust pipe, a fireproof valve is connected to the smoke exhaust pipe, and a temperature sensor is installed inside the smoke exhaust pipe. Both the fireproof valve and the temperature sensor are electrically connected to the controller. The fireproof valve is used to close when the temperature sensor detects a value exceeding a set value.

7. The double-groove continuous frying machine for fried dough sticks as described in claim 6, characterized in that, The fume hood is provided with at least one fireproof pipe extending from one end to the other. One end of the fireproof pipe passes through the fume hood and is used to connect to a carbon dioxide gas cylinder. The fireproof pipe has several exhaust holes with its wall facing downwards.

8. The double-groove continuous frying machine for fried dough sticks as described in claim 7, characterized in that, The fireproof pipe is equipped with a switch valve, which is electrically connected to the controller and is used to open when the temperature sensor detects a value exceeding a set value.

9. The double-groove continuous frying machine for fried dough sticks as described in claim 4, characterized in that, The outer casing is provided with electric heating tubes that extend into the two oil tanks, and each of the two oil tanks is connected to a liquid level switch. The liquid level switch and the electric heating tube are both electrically connected to the controller. The electric heating tube automatically cuts off power when the detection value of the liquid level switch is lower than a set range.

10. The double-groove continuous frying machine for fried dough sticks as described in claim 9, characterized in that, Both oil tanks are equipped with temperature sensing elements at their bottoms, and these elements are electrically connected to the controller. The electric heating element is activated when the temperature sensing element detects a value below the target range and deactivated when the value is within the target range.

Images