A drying device for processing dried bean curd sticks

Abstract

This invention discloses a drying device for dried bean curd sticks, including a base frame. Two drive shafts are rotatably mounted on both sides of the base frame. A conveyor belt is wound around the two sets of drive shafts. A drive motor is driven to the drive shafts. A microwave drying device is mounted on the base frame, with its output end facing the conveyor belt. Multiple driven shafts are mounted on the base frame between the drive shafts, and these driven shafts are fitted against the inner side of the conveyor belt. This invention utilizes microwave drying, which requires less drying time than conventional drying methods. Conventional drying takes 12 hours, while microwave drying only takes six minutes to reach the required standard. Furthermore, microwave drying does not damage the nutritional components of soybeans, does not affect the color of the bean curd sticks, and makes them easier to rehydrate, resulting in a better texture. Microwaves cause the moisture in the bean curd sticks to vibrate at high speed and efficiency, generating friction and heat to cause evaporation.

Description

Technical Field

[0001] This invention relates to the field of dried bean curd processing technology, specifically a dried bean curd processing and drying device. Background Technology

[0002] Tofu skin (yuba) is a high-end soy product, widely known as "vegetarian meat" due to its high nutritional value, and is loved by consumers. Made from soybeans, tofu skin shares similar nutritional value with soybeans, including soy protein, dietary fiber, and carbohydrates, making it very beneficial to the human body. Its health benefits are almost identical to those of soy milk, making it suitable for almost everyone.

[0003] Chinese Invention Patent Publication No. CN116869202A discloses a tofu skin production equipment, including a film-forming mechanism, an extraction mechanism, a drying mechanism, a cutting mechanism, and a support. The support is used to support the film-forming mechanism, the extraction mechanism, the drying mechanism, and the cutting mechanism. By rationally designing the mechanisms of the film-forming mechanism, the extraction mechanism, and the drying mechanism, after soybean milk is added to the tofu skin production equipment, a thin film is formed on the liquid surface in the film-forming mechanism. The film is slowly and automatically lifted and separated under the action of the extraction mechanism. During the continuous lifting of the film, the film is continuously formed on the liquid surface of the film-forming mechanism. The extraction mechanism extracts the film at a speed of V = length of the liquid surface m * 0.5 / min, and separates and gathers the film. The film is dried in the drying mechanism, and the cutting mechanism completes the cutting.

[0004] The drying method used in this solution is still the traditional hot air drying. Although this drying method is technically mature, the process of drying the bean curd sticks by baking them with hot air will affect their color and crispness. Although this solution has adopted relatively low-temperature hot air, it only reduces this effect, but at the cost of extending the drying time. Furthermore, the dried bean curd sticks produced by this drying method need to be rehydrated in warm water and soaked for a long time to soften, which is inconvenient to use. Summary of the Invention

[0005] The purpose of this invention is to provide a dried bean curd processing apparatus to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A tofu skin processing and drying device includes a base frame, on both sides of which a drive shaft is rotatably mounted. A conveyor belt is wound around the two sets of drive shafts. A drive motor is driven to the drive shaft. A microwave drying device is mounted on the base frame. The output end of the microwave drying device is opposite to the conveyor belt. Multiple driven shafts are provided on the base frame between the drive shafts. The driven shafts are fitted against the inner side of the conveyor belt.

[0008] As a further aspect of the present invention: a secondary shaft is symmetrically installed between two adjacent driven shafts located in the middle of the upper side of the base frame. The conveyor belt passes around the lower side of the secondary shaft and is recessed in the middle of the upper side of the conveyor belt through the driven shaft and the secondary shaft. A flipping component is rotatably installed in the groove, and the rotation direction of the flipping component is consistent with the conveying direction of the conveyor belt.

[0009] As a further aspect of the present invention: the flipping assembly includes a first rotating shaft rotatably connected between the base frame, one end of the first rotating shaft is connected to an intermittent drive assembly, the other end of the first rotating shaft is embedded with an air intake pipe, and multiple sets of flipping plates are arranged in a ring array around the first rotating shaft.

[0010] As a further embodiment of the present invention: the flip plate is hollow, and through holes are evenly distributed on the surface of the flip plate. The through holes are located on the surface of the flip plate on one side of the rotation direction. The first rotating shaft is hollow and connected to the flip plate. One end of the suction pipe is closed, and the other end is equipped with a negative pressure pump.

[0011] As a further aspect of the present invention: the output end of the negative pressure pump is connected to the suction pipe, and multiple sets of air guide grooves are embedded in the surface of the suction pipe. The air guide grooves are in the shape of "C". The suction pipe slides against the inner wall of the first rotating shaft. The inside of the suction pipe is connected to the flip plate through the air guide grooves. The air guide grooves are located on the side opposite to the conveying direction of the conveyor belt.

[0012] As a further aspect of the present invention: the central angle of the closed portion on the suction pipe opposite to the air guide groove is greater than the included angle of the adjacent flip plate.

[0013] As a further aspect of the present invention: the intermittent drive assembly includes a ratchet rotatably connected to one side of the base frame and a swing assembly that engages with the ratchet drive. The ratchet is rotatably connected to a first mounting seat, which is fixedly connected to the inner side of the base frame. The ratchet is coaxially driven with the first rotating shaft. The swing assembly intermittently pushes the ratchet to rotate in the same direction during swinging.

[0014] As a further embodiment of the present invention: the swing assembly includes a rotating plate, the rotating plate being a strip-shaped plate, one side of the rotating plate being disposed opposite to the ratchet, and the other side of the rotating plate being rotatably connected to a second mounting seat fixedly connected to the base frame via a third rotating shaft, a sliding groove being vertically provided through the rotating plate on the lower side of the second mounting seat, a swing drive component being slidably disposed on the sliding groove, and a rotation drive component corresponding to and cooperating with the ratchet being provided on the rotating plate opposite to the ratchet.

[0015] As a further aspect of the present invention: the swing drive includes a slider that is slidably fitted on a groove, a crank is rotatably connected to the side of the slider away from the ratchet, and a motor is drively connected to the end of the crank away from the slider.

[0016] As a further embodiment of the present invention: the rotation drive includes a second rotating shaft rotatably connected above the third rotating shaft, a limit rod is fixedly connected to the periphery of the second rotating shaft near the ratchet, a rotating wheel is fixedly sleeved on the periphery of the end of the second rotating shaft away from the ratchet, a fixed wheel is fixedly connected to the second mounting seat, and a transmission chain is connected around the fixed wheel and the rotating wheel. Both the fixed wheel and the rotating wheel are sprockets, and the center of the fixed wheel and the third rotating shaft are located on the same axis.

[0017] As a further aspect of the present invention: the limiting rod is a bent plate-shaped structure, one end of the limiting rod is adapted to the ratchet, and the other end of the limiting rod extends away from the ratchet. Two sets of stop bars are symmetrically and fixedly connected on the side of the rotating plate, and the stop bars are located on both sides of the end of the limiting rod away from the ratchet.

[0018] Compared with existing technologies, the beneficial effects of this invention are: Microwave drying requires a shorter drying time than conventional drying methods, which typically take 12 hours, while microwave drying only takes six minutes to achieve the required standard. Furthermore, microwave drying does not damage the nutritional components of soybeans, does not alter the color of the dried bean curd sticks, and makes them easier to rehydrate, resulting in a better texture. Microwaves cause the moisture in the dried bean curd sticks to vibrate at high speed and efficiency, generating friction and heat to evaporate. The drive shaft drives the conveyor belt to maintain transport, while the driven shaft and auxiliary shaft provide stable transport and support. The shaped and cut dried bean curd sticks are transported from one side of the conveyor belt to the other, completing the microwave drying process. When passing the turning component, which rotates in the same direction as the conveyor belt, the component can turn the bean curd sticks over, improving the uniformity of drying and maintaining the overall consistency of the texture while increasing drying efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the conveyor belt and microwave drying box in this invention.

[0021] Figure 3 This is a schematic diagram of the flipping component of the present invention.

[0022] Figure 4 This is a three-dimensional schematic diagram of the flipping component in this invention.

[0023] Figure 5 This is a schematic diagram of the flipping component in this invention.

[0024] Figure 6 for Figure 5 An enlarged schematic diagram of region A in the middle.

[0025] Figure 7 This is a schematic diagram of the intermittent drive component in this invention.

[0026] Figure 8 This is a schematic diagram of the swing component in this invention.

[0027] Figure 9 This is a rear view of the swing component in this invention.

[0028] Figure 10 This is a schematic diagram of the swing drive component in this invention.

[0029] In the diagram: 1-Base frame, 2-Drive shaft, 3-Driven shaft, 31-Secondary shaft, 4-Conveyor belt, 5-Microwave drying device, 6-Tilting assembly, 61-First rotating shaft, 62-Tilting plate, 63-Suction pipe, 6301-Air guide groove, 6302-Negative pressure pump, 7-Ratchet, 71-First mounting seat, 8-Rotating plate, 81-Second mounting seat, 82-Slide groove, 83-Slider, 84-Crank, 85-Stop bar, 86-Second rotating shaft, 87-Limiting rod, 88-Fixed wheel, 89-Rotating wheel. Detailed Implementation

[0030] Please see Figure 1-10In this embodiment of the invention, a dried bean curd processing and drying device includes a base frame 1. Two drive shafts 2 are rotatably mounted on both sides of the base frame 1. A conveyor belt 4 is wound around the two sets of drive shafts 2. A drive motor is driven to the drive shafts 2, thereby driving the drive shafts 2 to rotate and driving the conveyor belt 4 to transport the shaped and cut bean curd. A microwave drying device 5 is installed on the base frame 1. The output end of the microwave drying device 5 is opposite to the conveyor belt 4. Compared with conventional drying methods, microwave drying requires less time. Conventional drying takes 12 hours, while microwave drying only takes six minutes to reach the standard. Furthermore, microwave drying does not damage the nutritional components of soybeans, does not damage the color of the bean curd, and makes it easier to rehydrate, resulting in a better taste. Microwaves cause the moisture in the bean curd to vibrate at high speed and efficiency, generating friction and heat to cause evaporation. Multiple driven shafts 3 are provided on the base frame 1 between the drive shafts 2. The driven shafts 3 are fitted inside the conveyor belt 4. A secondary shaft 31 is symmetrically installed between two adjacent driven shafts 3 located in the middle of the upper side of the base frame 1. The conveyor belt 4 passes around the lower side of the secondary shaft 31 and is recessed in the middle of the upper side of the conveyor belt 4 through the driven shafts 3 and the secondary shaft 31. The drive shaft 2 drives the conveyor belt 4 to maintain the conveying. The driven shafts 3 and the secondary shaft 31 can provide stable conveying and support. A flipping component 6 is rotatably installed in the groove. The rotation direction of the flipping component 6 is the same as the conveying direction of the conveyor belt 4. The shaped and cut bean curd sticks are conveyed from one side of the conveyor belt 4 to the other side. During this process, microwave drying is completed. When passing the flipping component 6, the flipping component 6 has the same rotation direction as the conveying direction of the conveyor belt 4. In this way, when the auxiliary conveyor reaches the flipping component 6, the flipping component 6 can flip the auxiliary conveyor, thereby improving the uniformity of the bean curd stick drying. This can maintain the consistency of the overall taste of the auxiliary conveyor and improve the drying efficiency. The microwave equipment used in this application is a commonly used microwave drying equipment in the prior art. It has been used in the drying and processing of ingredients such as wood ear fungus in related fields. The microwave frequency can be adjusted according to the characteristics of dried bean curd to achieve a suitable drying effect, which will not be elaborated here.

[0031] like Figure 2-6 As shown, in this embodiment, the flipping assembly 6 includes a first rotating shaft 61 rotatably connected to the base frame 1. One end of the first rotating shaft 61 is connected to an intermittent drive assembly, and the other end is embedded with an air suction pipe 63. Multiple sets of flipping plates 62 are arranged in a circular array around the first rotating shaft 61. When the dried bean curd sticks enter between two adjacent sets of flipping plates 62, the rotation of the first rotating shaft 61 drives the flipping plates 62 to rotate, thereby flipping the dried bean curd sticks over. This facilitates efficient drying of the dried bean curd sticks, and after flipping, the dried bean curd sticks can be conveyed and driven. This method can improve the uniformity of dried bean curd stick drying.

[0032] Furthermore, to ensure the stability of the tofu skin during flipping, the flipping plate 62 is hollow, and its surface is evenly distributed with through holes on one side of the rotating direction. The first rotating shaft 61 is hollow and connected to the flipping plate 62. One end of the suction pipe 63 is closed, and the other end is connected to a negative pressure pump 6302. The output end of the negative pressure pump 6302 is connected to the suction pipe 63. Multiple sets of air guide grooves 6301 are embedded in the surface of the suction pipe 63. The air guide grooves 6301 are "C" shaped. The suction pipe 63 slides against the inner wall of the first rotating shaft 61. The inside of the suction pipe 63 is connected to the flipping plate 62 through the air guide grooves 6301. The air guide grooves 6301 are located on the side of the suction pipe 63 opposite to the conveying direction of the conveyor belt 4. When the first rotating shaft 61 drives the flipping plate 62 to rotate, the through holes on the flipping plate 62 can form a suction effect after the negative pressure pump 6302 is started. After the bean curd stick enters between the adjacent flipping plates 62, a certain suction force can be formed when the air is drawn out through the through holes on the flipping plate 62. This can improve the stability of flipping the bean curd stick to a certain extent. When the flipping plate 62 rotates to the other side, the suction through holes on the flipping plate 62 are located on the upper side of the bean curd stick. And the two sets of flipping plates 62 at this point can no longer be connected to the inside of the suction pipe 63 due to the position setting of the air guide groove 6301. At this time, the suction effect of the through holes on the flipping plate 62 disappears. In this way, the bean curd stick can easily come into contact with the conveyor belt 4 and be conveyed away without affecting the continued rotation of the first rotating shaft 61 and the flipping plate 62, and will not be damaged as a result. Preferably, the angle of the central angle of the closed part of the suction pipe 63 opposite to the air guide groove 6301 is greater than the included angle of the adjacent flipping plates 62. In this way, the two sets of flipping plates 62 can lose the adsorption effect after rotating to this point.

[0033] And such Figure 4 As shown in Figures 7-10, the intermittent drive assembly includes a ratchet 7 rotatably connected to one side of the base frame 1 and a swing assembly that drives the ratchet 7. The ratchet 7 is rotatably connected to a first mounting seat 71, which is fixedly connected to the inner side of the base frame 1. The ratchet 7 is coaxially connected to the first rotating shaft 61. When the swing assembly swings, it intermittently pushes the ratchet 7 to rotate in the same direction, thereby enabling the tofu skin to be turned over.

[0034] The swing assembly includes a rotating plate 8, which is a strip-shaped plate. One side of the rotating plate 8 is opposite to the ratchet 7, and the other side of the rotating plate 8 is rotatably connected to a second mounting seat 81 fixedly connected to the base frame 1 via a third rotating shaft. A sliding groove 82 is vertically provided through the rotating plate 8 on the lower side of the second mounting seat 81. A swing drive component is slidably fitted on the sliding groove 82. A rotation drive component corresponding to and cooperating with the ratchet 7 is provided on the rotating plate 8 at the position opposite to the ratchet 7. After the swing drive component is activated, the rotating plate 8 can rotate through the third rotating shaft, thereby driving the rotation drive component to cooperate with the ratchet 7 and drive the ratchet 7 to rotate intermittently. Preferably, the oscillating drive includes a slider 83 slidably fitted on the slide groove 82. A crank 84 is rotatably connected to the side of the slider 83 away from the ratchet 7. A motor is driven to the end of the crank 84 away from the slider 83. The output end of the motor drives the crank 84 to rotate, thereby causing the slider 83 to slide vertically back and forth on the slide groove 82. During the sliding process, it can also drive the rotating plate 8 to oscillate through the third rotating shaft. Also preferably, the rotation drive includes a second rotating shaft 86 rotatably connected above the third rotating shaft. A limit rod 87 is fixedly connected to the outer periphery of the second rotating shaft 86 near the ratchet 7. A rotating wheel 89 is sleeved and fixedly installed on the outer periphery of the second rotating shaft 86 away from the ratchet 7. A fixed wheel 88 is fixedly connected to the second mounting seat 81. A transmission chain is connected around the fixed wheel 88 and the rotating wheel 89. Both the fixed wheel 88 and the rotating wheel 89 are sprockets. The center of the fixed wheel 88 and the third rotating shaft are located on the same axis. When the rotating plate 8 oscillates, such as Figure 7As shown, when rotating counterclockwise, because the fixed wheel 88 does not move, the second shaft 86 at the rotating wheel 89 will drive the limit rod 87 to swing slightly counterclockwise to adapt. When rotating clockwise, the second shaft 86 at the rotating wheel 89 will drive the limit rod 87 to swing clockwise to adapt. The limit rod 87 and the ratchet 7 are in a ratchet unidirectional transmission cooperation, that is, the limit rod 87 drives the ratchet 7 to rotate in one direction, thereby driving the first shaft 61 and the flip plate 62 to rotate in one direction. The intermittent transmission also makes it convenient for the conveyor belt 4 to transport the bean curd between adjacent flip plates 62 during the intermittent time interval and to transport the bean curd between adjacent flip plates 62 away during the intermittent time interval. More preferably, the limiting rod 87 is a bent plate-like structure. One end of the limiting rod 87 is adapted to the ratchet 7, and the other end of the limiting rod 87 extends away from the ratchet 7. Two sets of stop rods 85 are symmetrically fixedly connected to the side of the rotating plate 8. The stop rods 85 are located on both sides of the end of the limiting rod 87 away from the ratchet 7. The stop rods 85 can limit and prevent the swing angle of the limiting rod 87, thus avoiding affecting the transmission of the ratchet 7. The transmission cooperation between the fixed wheel 88 and the rotating wheel 89 can reduce the impact on the ratchet 7 after the limiting rod 87 rotates and drives the ratchet 7. That is, when it swings back in the opposite direction of the ratchet 7 rotation, the second rotating shaft 86 can drive the limiting rod 87 to swing, thus avoiding driving the ratchet 7 to rotate in the opposite direction, thereby achieving a unidirectional transmission effect. In order to ensure the stability of the ratchet 7, the ratchet 7 and the first mounting seat 71 can also be rotatably connected by a damping bearing.

Claims

1. A dried bean curd processing and drying device, comprising a base frame, wherein drive shafts are rotatably mounted on both sides of the base frame, a conveyor belt is wound around the two sets of drive shafts, and a drive motor is drivenly connected to the drive shafts, characterized in that, A microwave drying device is installed on the base frame, and the output end of the microwave drying device is opposite to the conveyor belt. Multiple sets of driven shafts are provided on the base frame between the drive shafts, and the driven shafts are fitted to the inner side of the conveyor belt. A secondary shaft is symmetrically installed between two adjacent driven shafts located in the middle of the upper side of the base frame. The conveyor belt passes around the lower side of the secondary shaft and is recessed in the middle of the upper side of the conveyor belt through the driven shaft and the secondary shaft. A flipping component is rotatably installed in the groove, and the rotation direction of the flipping component is consistent with the conveying direction of the conveyor belt. The flipping assembly includes a first rotating shaft rotatably connected between the base frame, one end of the first rotating shaft is connected to an intermittent drive assembly, the other end of the first rotating shaft is embedded with an air suction pipe, and multiple sets of flipping plates are arranged in a ring array around the first rotating shaft. The flip plate is hollow and has through holes evenly distributed on its surface. The through holes are located on the surface of the flip plate on one side of the rotation direction. The first rotating shaft is hollow and connected to the flip plate. One end of the suction pipe is closed and the other end is connected to a negative pressure pump. The output end of the negative pressure pump is connected to the suction pipe. Multiple sets of air guide grooves are embedded on the surface of the suction pipe. The air guide grooves are "C" shaped. The suction pipe slides against the inner wall of the first rotating shaft. The inside of the suction pipe is connected to the tilting plate through the air guide grooves. The air guide grooves are located on the side of the suction pipe opposite to the conveyor belt conveying direction.

2. The dried bean curd processing apparatus according to claim 1, characterized in that, The central angle of the closed section on the intake pipe opposite to the air guide groove is greater than the included angle of the adjacent flip plate.

3. The dried bean curd processing apparatus according to claim 1, characterized in that, The intermittent drive assembly includes a ratchet rotatably connected to one side of the base frame and a swing assembly that engages with the ratchet drive. The ratchet is rotatably connected to a first mounting seat, which is fixedly connected to the inner side of the base frame. The ratchet is coaxially connected to the first rotating shaft. The swing assembly intermittently pushes the ratchet to rotate in the same direction during swinging.

4. The dried bean curd processing apparatus according to claim 3, characterized in that, The swing assembly includes a rotating plate, which is a strip-shaped plate. One side of the rotating plate is opposite to the ratchet, and the other side of the rotating plate is rotatably connected to a second mounting seat fixedly connected to the base frame via a third rotating shaft. A sliding groove is vertically provided through the rotating plate on the lower side of the second mounting seat. A swing drive component is slidably fitted on the sliding groove. A rotation drive component corresponding to and cooperating with the ratchet is provided on the rotating plate opposite to the ratchet.

5. The dried bean curd processing apparatus according to claim 4, characterized in that, The oscillating drive includes a slider that slides on a groove, a crank that is rotatably connected to the side of the slider away from the ratchet, and a motor that is driven to the end of the crank away from the slider.

6. The dried bean curd processing apparatus according to claim 4, characterized in that, The rotation drive includes a second rotating shaft rotatably connected above the third rotating shaft. A limit rod is fixedly connected to the periphery of the second rotating shaft near the ratchet. A rotating wheel is fixedly sleeved on the periphery of the end of the second rotating shaft away from the ratchet. A fixed wheel is fixedly connected to the second mounting seat. A transmission chain is connected around the fixed wheel and the rotating wheel. Both the fixed wheel and the rotating wheel are sprockets. The center of the fixed wheel and the third rotating shaft are located on the same axis.

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