A puffed food raw material drying production line

Abstract

The present invention discloses a puffed food raw material drying production line, comprising a raw material input port, a lifting conveyor line, an automatic feeding mechanism, a drying bed, a discharge conveyor line, and a control system. The lifting conveyor line connects the raw material input port and the automatic feeding mechanism. The automatic feeding mechanism is a traveling feeding device erected above the production line, comprising a first track and a plurality of second tracks perpendicular to the first track. A first feeding trolley is provided on the first track, and a second feeding trolley is provided on the second track. The first and second feeding trolleys are controlled by a control system, and the material is repeatedly and quantitatively fed into the drying bed through an automatic unloading mechanism. The drying bed comprises an outer shell and an inner drum. The outer shell is provided with a feeding port and an automatic discharging mechanism. The inner drum is provided with an automatic feeding and discharging mechanism shared by the feeding and discharging. The material is automatically transported to the next process via the discharge conveyor line. The production line of the present invention is an intelligent production line from feeding to discharging, and has the advantages of high space utilization, production efficiency, and high product yield.

Description

Technical Field

[0001] The invention belongs to the field of food production and processing, and in particular relates to a puffed food raw material drying production line. Background Art

[0002] The raw material drying process is a key step in the puffed food processing technology. The existing puffed food drying process generally involves manual loading, drying, and manual unloading and transportation. Due to the high height of the drying equipment's inlet, both feeding and unloading are physically demanding and labor-intensive for operators. Furthermore, the drying equipment maintains a high temperature during operation, requiring operators to wait for the equipment to cool before unloading. Otherwise, there is a risk of burns. Furthermore, the raw material becomes brittle after drying, and manual unloading can easily lead to the raw material breaking. Therefore, this production method is subject to problems such as high labor intensity, low production efficiency, low safety, and a high rate of product defects. Summary of the Invention

[0003] To solve the above problems, the present invention proposes a puffed food raw material drying production line, which has the ability to automatically produce the entire process of feeding, drying and discharging, with less manual intervention, high production efficiency and high product yield.

[0004] The present invention is achieved through the following technical solutions:

[0005] The present invention provides a puffed food raw material drying production line, comprising a raw material inlet, an elevating conveyor line, an automatic feeding mechanism, a drying bed, a discharging conveyor line, and a control system. A raw material outlet is provided at the lower end of the raw material inlet. One end of the elevating conveyor line is connected to the raw material outlet, and the other end is located above the automatic feeding mechanism. The automatic feeding mechanism is used to transport the raw materials to the drying bed. The discharging conveyor line is located directly below the drying bed and is used to transport the dried raw materials. The control system is connected to the elevating conveyor line, the automatic feeding mechanism, the drying bed, and the discharging conveyor line to control the operation of each link.

[0006] The automatic feeding mechanism includes a first track, a second track, a first feed cart, a second feed cart and a pneumatic drive device, the first track and the second track are perpendicular to each other, and the first track is located above the second track, a plurality of induction switches are provided on the first track and the second track, and the induction switches are connected to the control system; the first feed cart and the second feed cart are provided with hoppers on the upper parts, and walking devices and automatic unloading structures on the lower parts, the walking devices are driven by the pneumatic drive device, the first feed cart moves along the first track, and the second feed cart moves along the second track, the automatic unloading structure of the first feed cart is arranged opposite to the hopper of the second feed cart, and the automatic unloading structure of the second feed cart is arranged opposite to the drying bed, and the second feed cart and the second track are at least one group;

[0007] The drying bed includes an outer shell fixed to the ground, an inner drum, and a power device. The top of the outer shell is provided with a feed port opposite to the second material cart, and the bottom of the outer shell is provided with a discharge structure. The inner drum is a cylindrical screen structure, and a material feeding and discharging structure is provided on the wall of the inner drum. The power device is connected to the end of the inner drum and is provided on the outer side surface of the end of the outer shell. The power device is used to control the rotation of the inner drum.

[0008] Based on the above technical features, by promoting the coordination of the conveyor chain, automatic feeding mechanism, drying bed feed port, discharge structure, feeding and discharging structure and discharge conveyor line, the first track corresponds to multiple second tracks, and the control system intelligently controls the equipment in each link, so that materials can be automatically fed from the top of the equipment and automatically discharged from the bottom. The production line can carry out intelligent production, with high overall space utilization, high production efficiency and high product quality.

[0009] Furthermore, the automatic unloading structure includes a first baffle and a first telescopic rod, the first baffle is arranged in contact with the bottom of the first material cart or the second material cart, the first telescopic rod is fixedly connected to the hopper, the end of the first telescopic rod is fixedly connected to the first baffle, the first telescopic rod is connected in series with the solenoid valve and then connected to the pneumatic drive device, and the first telescopic rod is a pneumatic telescopic rod;

[0010] Based on the above technical features, materials can be automatically transferred between the first material cart, the second material cart and the drying bed, and the first telescopic rod can be controlled by the solenoid valve to open and close multiple times to achieve quantitative delivery.

[0011] Furthermore, the walking device includes a pair of parallel sliding rods, the sliding rods are fixedly connected to the hopper, the sliding rods are sleeved on the first track or the second track, and the sides of the sliding rods are provided with roller assemblies, and the roller assembly rolls along the first track or the second track under the drive of the pneumatic drive device.

[0012] Furthermore, the pneumatic drive device includes a power source, an air pipe and a steel rope. The power source is arranged at the end of the first rail and the second rail, one end of the air pipe is connected to the power source, and the other end is connected to the walking device and the automatic unloading structure. The steel rope is erected above the first rail and the second rail, and a plurality of hanging rings are connected in series on the steel rope, and the air pipe is laid through the hanging rings; a vertical frame is fixed on the walking device, and a pulley assembly is provided at the end of the vertical frame. The pulley assembly is sleeved on the steel rope and slides along the steel rope. The pulley assembly retracts or releases the air pipe through the hanging ring to avoid the air pipe interfering with the movement of the first or second material car, and at the same time avoids damage to the air pipe.

[0013] Furthermore, the discharging structure is arranged through the bottom of the shell, including a second baffle and a second telescopic rod arranged in opposition, one end of the second baffle is a free end, and the other end is hinged to the shell, one end of the second telescopic rod is fixed on the shell, and the other end is hinged to the lower side of the second baffle. When the second telescopic rod contracts, it drives the second baffle to rotate and move downward around the hinged end to form a discharging channel, thereby completing the discharging.

[0014] Furthermore, a first sensor is provided at the short side of the second baffle at the bottom of the shell. The first sensor is connected to the control system. The first sensor is used to detect the discharge situation. When the material is completely discharged, the first sensor sends a material demand signal to the control system according to the detection situation, so that the automatic feeding mechanism is activated.

[0015] Furthermore, the material inlet and outlet structure includes a material inlet and outlet, a third baffle and a sliding assembly. The material inlet and outlet is opened on the cylinder wall of the inner drum, and the opening position of the material inlet and outlet is opposite to the feed port. The third baffle covers the material inlet and outlet. The sliding assembly includes a sliding bar, a slide groove and a third telescopic rod. The sliding bar is slidably set in the slide groove, and the sliding bar is fixed on the upper and lower sides of the third baffle. The slide groove protrudes on the cylinder wall of the inner drum and is provided on both sides of the material inlet and outlet; one end of the third telescopic rod is fixed on the inner drum, and the other end is fixedly connected to the third baffle. When discharging and feeding are required, the third telescopic rod is retracted, and the third baffle moves to the side along the slide groove to expose the material inlet and outlet, providing a window for material entry and exit.

[0016] Furthermore, there are several feed ports and material inlet and outlet structures on the top of the outer shell, and the feed ports and material inlet and outlet structures are evenly distributed along the axial direction of the drying bed. The feed port is a funnel-shaped structure protruding from the outer shell, and the feed port is connected to the outer shell cavity. Based on the above technical features, the materials put in by the second material cart can be put into the inner drum completely and evenly, which facilitates more thorough drying.

[0017] Furthermore, the shell is provided with an openable operating window and a fixed bracket, the upper side of the operating window is hinged to the shell, a handle is provided on the outer side of the operating window, the fixed bracket is vertically mounted on the shell, and a number of hooks are rotatably sleeved on the fixed bracket, and the hooks are arranged in conjunction with the handle. When manual operation or observation is required, the operating window can be hung on the hook to ensure the safety of personnel operation.

[0018] Furthermore, a second sensor is provided on the outer shell, which is a travel switch. The contacts of the travel switch are in contact with the operating window. When the operating window is opened, the travel switch is triggered, and the power source of the inner drum is cut off through the control system, so that the inner drum stops rotating, thereby improving the safety of personnel during operation.

[0019] (3) Beneficial effects

[0020] One of the above technical solutions has the following advantages or beneficial effects:

[0021] 1) By setting the automatic feeding mechanism above the drying equipment and designing the first track to correspond to multiple second tracks, the material can be automatically fed from the top of the equipment. The production line has the characteristics of automatic feeding and high overall space utilization.

[0022] 2) By improving the conveyor chain, automatic feeding mechanism, first, the coordinated setting of the feeding and discharging structure and the discharging conveyor line, and the use of the control system, the automated production of materials from feeding to discharging is realized. The production line has the characteristics of intelligent production, high production efficiency and high product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0024] Figure 1 It is a plan view schematic diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the automatic feeding mechanism of the present invention;

[0026] Figure 3 For the present invention Figure 2 Schematic diagram of the structure of part A;

[0027] Figure 4 This is a schematic diagram of the automatic blanking structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the overall structure of the drying bed of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the drying bed of the present invention;

[0030] Figure 7 Schematic diagram of the radial cross section of the drying bed of the present invention;

[0031] Figure 8 For the present invention Figure 7 Schematic diagram of the structure of part B;

[0032] Figure 9 For the present invention Figure 7 Schematic diagram of the structure of part C;

[0033] Figure 10 This is a schematic diagram of the inner side of the feeding and discharging structure of the present invention;

[0034] In the figure: raw material input port 1; lifting conveyor line 2; automatic feeding mechanism 3; first track 31; second track 32; first feed car 33; second feed car 34; pneumatic drive device 35; air pipe 35-1; steel rope 35-2; stand 35-3; pulley assembly 35-3-1; hopper 36; walking device 37; slide bar 37-1; roller assembly 37-2; automatic unloading structure 38; first baffle 38-1; first telescopic rod 38-2; electric Magnetic valve 38-3; drying bed 4; power unit 40; housing 41; operating window 411; fixing bracket 412; second sensor 413; handle 411-1; hook 412-1; inner drum 42; feed port 43; discharge structure 44; second baffle 441; second telescopic rod 442; feed and discharge structure 45; third baffle 451; sliding bar 452; chute 453; third telescopic rod 454; first sensor 46; discharge conveyor line 5. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to the examples, but the embodiments of the present invention are not limited thereto.

[0036] The present invention provides a puffed food raw material drying production line, comprising a raw material inlet 1, an elevating conveyor line 2, an automatic feeding mechanism 3, a drying bed 4, a discharging conveyor line 5, and a control system. The raw material inlet 1 is provided with a raw material outlet at the lower end. One end of the elevating conveyor line 2 is connected to the raw material outlet, and the other end is located above the automatic feeding mechanism 3. A transverse partition is provided on the upper surface of the elevating conveyor line 2 to prevent the material from falling back. The automatic feeding mechanism 3 is used to transport the raw materials to the drying bed 4. The discharging conveyor line 5 is located directly below the drying bed 4 and is used to transport the dried materials. The control system is connected to the elevating conveyor line 2, the automatic feeding mechanism 3, the drying bed 4, and the discharging conveyor line 5, and is used to control the operation of each link.

[0037] The automatic feeding mechanism 3 includes a first track 31, a second track 32, a first feeding trolley 33, a second feeding trolley 34 and a pneumatic drive device 35. The first track 31 and the second track 32 are perpendicular to each other, and the first track 31 is located above the second track 32. A number of induction switches (not shown in the figure) are provided on the first track 31 and the second track 32. The induction switches are arranged according to the required feeding positions, and the setting positions include the intersection of the first track 31 and the second track 32, the corresponding position of the second track 32 and the feed port 43 of the drying bed 4, etc. The induction switches are connected to the control system; The first trolley 33 and the second trolley 34 are provided with a hopper 36 on the upper part, and a walking device 37 and an automatic unloading structure 38 on the lower part. The walking device 37 is driven by the pneumatic drive device 35. The first trolley 33 moves along the first track 31, and the second trolley 34 moves along the second track 32. The automatic unloading structure 38 of the first trolley 33 is arranged opposite to the hopper 36 of the second trolley 34, and the automatic unloading structure 38 of the second trolley 34 is arranged opposite to the drying bed 4. The second trolley 34 and the second track 32 form at least one group, and the number of groups is determined according to the layout of the drying bed 4.

[0038] The automatic unloading structure 38 includes a first baffle 38-1 and a first telescopic rod 38-2. The first baffle 38-1 is arranged to fit the bottom of the first material cart 33 or the second material cart 34. The first telescopic rod 38-2 is fixedly connected to the hopper 36. The end of the first telescopic rod 38-2 is fixedly connected to the first baffle 38-1. The first telescopic rod 38-2 is connected in series with the solenoid valve 38-3 and then connected to the pneumatic drive device 35. The first telescopic rod 38-2 is a pneumatic telescopic rod. Through multiple opening and closing of the automatic unloading structure 38, materials can be automatically and quantitatively transferred or dropped between the first material cart 33, the second material cart 34 and the drying bed 4.

[0039] Among them, such as Figure 2 、 3 As shown, the walking device 37 includes a pair of parallel sliding rods 37-1, the sliding rods 37-1 are fixedly connected to the lower end of the hopper 36, the sliding rods 37-1 are sleeved on the first track 31 or the second track 32, and the side of the sliding rod 37-1 is provided with a roller assembly 37-2. The roller assembly 37-2 rolls along the first track 31 or the second track 32 under the drive of the pneumatic drive device 35, thereby realizing the movement of the first and second trolleys 33 and 34 on the first and second tracks 31 and 32;

[0040] Among them, such as Figure 2 、 3As shown, the pneumatic drive device 35 includes a power source (not shown in the figure), an air pipe 35-1 and a steel rope 35-2. The power source is provided at the ends of the first track 31 and the second track 32. One end of the air pipe 35-1 is connected to the power source, and the other end is connected to the walking device 37 and the automatic unloading structure 38. The steel rope 35-2 is mounted above the first track 31 and the second track 32. Several hanging rings (not shown in the figure) are connected in series on the steel rope 35-2. The air pipe 35-1 passes through the hanging ring cloth. It is assumed that a stand 35-3 is fixed on the walking device 37, and a pulley assembly 35-3-1 is provided at the end of the stand 35-3. The pulley assembly 35-3-1 is sleeved on the steel rope 35-2 and slides along the steel rope 35-2. When the pulley assembly 35-3-1 moves with the first and second material carts 33 and 34, it pushes the hanging ring to move along the steel rope 35-2 and drives the air pipe 35-1 to retract or release, so as to ensure the power supply of the first or second material cart 34 and avoid damage to the air pipe 35-1.

[0041] The drying bed 4 includes an outer shell 41 fixed to the ground, an inner drum 42, and a power device 40. The top of the outer shell 41 is provided with a feed port 43 opposite to the second material cart 34, and the bottom of the outer shell 41 is provided with a discharge structure 44. The inner drum 42 is a cylindrical screen structure, and a feed and discharge structure 45 is opened on the wall of the inner drum 42. The power device 40 is connected to the end of the inner drum 42 and is provided on the outer side surface of the end of the outer shell 41. The power device 40 drives the inner drum 42 to rotate to dry the material and is controlled by the control system to drive the inner drum 42 to remain stationary at a set position.

[0042] Among them, Figures 6-8 As shown, the discharging structure 44 is arranged through the bottom of the shell 41, and includes a second baffle 441 and a second telescopic rod 442 arranged in opposition, one end of the second baffle 441 is a free end, and the other end is hinged to the shell 41, one end of the second telescopic rod 442 is fixed on the shell 41, and the other end is hinged to the lower side of the second baffle 441. When the second telescopic rod 442 contracts, it drives the second baffle 441 to rotate and move downward around the hinged end to form a discharging channel, and the material automatically falls onto the discharging conveyor line 5 to complete the discharging; preferably, a first sensor 46 is also provided at the short side of the second baffle 441 at the bottom of the shell 41, and the first sensor 46 is connected to the control system. The first sensor 46 can be a sensor element such as a photoelectric sensor, a distance sensor or a travel switch, which is used to detect the discharging situation. When the material is completely discharged, the first sensor 46 sends a material demand signal according to the detection situation, and the feedback control system enables the automatic feeding mechanism 3 to perform the feeding action.

[0043] Among them, Figure 7 、 Figure 9 、 10 As shown, the material inlet and outlet structure 45 includes a material inlet and outlet, a third baffle 451 and a sliding assembly. The material inlet and outlet are opened on the wall of the inner drum 42. The opening position of the material inlet and outlet is opposite to the feed port 43. The third baffle 451 covers the material inlet and outlet. The sliding assembly includes a sliding bar 452, a chute 453 and a third telescopic rod 454. The sliding bar 452 is slidably set in the chute 453. The sliding bar 452 is fixed on the upper and lower sides of the third baffle 451. The chute 453 protrudes from the wall of the inner drum 42. The third telescopic rod 454 is fixed on the inner drum 42 at one end, and the third baffle 451 is fixedly connected to the third baffle 451 at the other end. When feeding and discharging are required, the third telescopic rod 454 is retracted, and the third baffle 451 moves sideways along the slide groove 453 to expose the material entrance and exit. When the feeding and discharging structure 45 rotates to the top with the inner drum 42 and faces the feed port 43, the material entrance and exit is used as the material input port. When the feeding and discharging structure 45 rotates to the bottom with the inner drum 42, the material entrance and exit is used as the material discharge port.

[0044] Preferably, there are several feed ports 43 and several feed and discharge structures 45 on the top of the housing 41, such as Figure 4 、 5 As shown, there are three feed ports 43 and three material feeding and discharging structures 45 , which are evenly distributed along the axial direction of the drying bed 4 . The feed port 43 is a funnel-shaped structure protruding from the shell 41 , and the feed port 43 is connected to the cavity of the shell 41 .

[0045] Preferably, if Figure 5 As shown, the shell 41 is also provided with an openable operating window 411, a fixed bracket 412 and a second sensor 413. The upper side of the operating window 411 is hinged to the shell 41, and a handle 411-1 is provided on the outside of the operating window 411. The fixed bracket 412 is vertically mounted on the shell 41. A plurality of hooks 412-1 are rotatably sleeved on the fixed bracket 412. The hooks 412-1 are cooperated with the handle 411-1. The second sensor 413 is a travel switch, which is provided on the shell 41 and whose contacts are in contact with the operating window 411. When manual operation or observation is required, the operating window 411 is opened and the travel switch is triggered. The travel switch cuts off the power source of the inner drum 42 through the control system, causing the inner drum 42 to stop rotating. The operating window 411 continues to open upward and is hung on the hook 412-1 through the handle 411-1, ensuring the safety of personnel operation and eliminating safety hazards.

[0046] The control method of the production process and its control system: the material is manually put into the raw material port, and the material flows into the lifting conveyor line 2 through the raw material outlet. When the material needs to be put in, the control system receives the waiting position information, first controls the first material cart 33 to move to the end of the lifting conveyor line 2 to wait for the material, and controls the second material cart 34 to wait for the material at the intersection of the first track 31 and the second track 32 where the waiting position is located. The lifting conveyor line 2 lifts the material and puts the material into the hopper 36 of the first material cart 33. After the first material cart 33 is loaded with the material, it moves along the first track 31 to the top of the second material cart 34. The first telescopic rod 38-2 at the bottom of the first material cart 33 drives the first baffle 38-1 to move, and puts the material in the first material cart 33 into the second material cart 34. After the second material cart 34 is loaded with the material, it moves along the second track 32 to the waiting position. The automatic unloading structure 38 at the bottom of the second material cart 34 is activated. Under the control of the solenoid valve 38-3, the first baffle 38-1 is opened and closed reciprocatingly multiple times to put the material into the hopper 36 through the funnel-shaped feeding port 43. When the material enters the drying bed 4 through the feeding port 43, the material enters the inner drum 42 through the material entrance and exit again. After the feeding is completed, the feeding and discharging structure 45 is closed, and the drying bed 4 starts to work. After the drying process is completed, the control system controls the inner drum 42 to rotate to the position where the feeding and discharging structure 45 is facing the bottom of the outer shell 41. The feeding and discharging structure 45 is opened, and the material enters the outer shell 41. The control system controls the second telescopic rod 442 to retract, driving the second baffle 441 to rotate downward to form a discharge channel. The material enters the discharge conveyor line 5 from the discharge channel for transportation. When the first sensor 46 senses that the material is empty, it outputs a waiting signal to the control system. The control system controls the second telescopic rod 442 to extend, close the second baffle 441, and send a new round of feeding control signal.

[0047] The working mode of the control system of the present invention, the wiring diagram of the power element, the wiring diagram of the photoelectric switch and other sensors, and the working mode are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0048] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of protection of the present invention.

Claims

1. A puffed food raw material drying production line, comprising a raw material input port (1), a lifting conveyor line (2), an automatic feeding mechanism (3), a drying bed (4), a discharging conveyor line (5) and a control system, wherein a raw material outlet is provided at the lower end of the raw material input port (1), one end of the lifting conveyor line (2) is connected to the raw material outlet, and the other end is arranged above the automatic feeding mechanism (3), the automatic feeding mechanism (3) is used to transport the raw material to the drying bed (4), the discharging conveyor line (5) is arranged just below the drying bed (4) and is used to transport the dried raw material; the control system is connected to the lifting conveyor line (2), the automatic feeding mechanism (3), the drying bed (4) and the discharging conveyor line (5), and is used to control the actions of each link, and is characterized in that: The automatic feeding mechanism (3) comprises a first track (31), a second track (32), a first feeding trolley (33), a second feeding trolley (34) and a pneumatic drive device (35), wherein the first track (31) and the second track (32) are perpendicular to each other, and the first track (31) is located above the second track (32), and a plurality of induction switches are provided on the first track (31) and the second track (32), and the induction switches are connected to the control system; the first feeding trolley (33) and the second feeding trolley (34) are provided with a hopper (36) on the upper part and a walking wheel on the lower part. Device (37) and automatic unloading structure (38), the walking device (37) is driven by the pneumatic drive device (35), the first trolley (33) moves along the first track (31), the second trolley (34) moves along the second track (32), the automatic unloading structure (38) of the first trolley (33) is arranged opposite to the hopper (36) of the second trolley (34), the automatic unloading structure (38) of the second trolley (34) is arranged opposite to the drying bed (4), and the second trolley (34) and the second track (32) are at least one group; The automatic unloading structure (38) includes a first baffle (38-1) and a first telescopic rod (38-2), wherein the first baffle (38-1) is arranged to fit the bottom of the first material cart (33) or the second material cart (34), the first telescopic rod (38-2) is fixedly connected to the hopper (36), the end of the first telescopic rod (38-2) is fixedly connected to the first baffle (38-1), the first telescopic rod (38-2) is connected to the pneumatic drive device (35) after being connected in series with the solenoid valve (38-3), and the first telescopic rod (38-2) is a pneumatic telescopic rod; The walking device (37) includes a pair of parallel sliding rods (37-1), the sliding rods (37-1) are fixedly connected to the hopper (36), the sliding rods (37-1) are sleeved on the first track (31) or the second track (32), and the sides of the sliding rods (37-1) are provided with roller assemblies (37-2); The drying bed (4) comprises an outer shell (41) fixed to the ground, an inner drum (42) and a power device (40); a feeding port (43) opposite to the second material cart (34) is provided at the top of the outer shell (41); a discharging structure (44) is provided at the bottom of the outer shell (41); the inner drum (42) is a cylindrical screen structure; a feeding and discharging structure (45) is provided on the wall of the inner drum (42); and the power device (40) is connected to the end of the inner drum (42) and is provided on the outer side surface of the end of the outer shell (41).

2. The puffed food raw material drying production line according to claim 1, characterized in that: The roller assembly (37-2) rolls along the first track (31) or the second track (32) under the drive of the pneumatic drive device (35).

3. The puffed food raw material drying production line according to claim 1, characterized in that: The pneumatic drive device (35) includes a power source, an air pipe (35-1) and a steel rope (35-2). The power source is provided at the ends of the first track (31) and the second track (32). One end of the air pipe (35-1) is connected to the power source, and the other end is connected to the walking device (37) and the automatic unloading structure (38). The steel rope (35-2) is installed above the first track (31) and the second track (32). 2) are serially connected with a plurality of hanging rings, and the gas pipe (35-1) is laid through the hanging rings; a stand (35-3) is fixedly provided on the walking device (37), and a pulley assembly (35-3-1) is provided at the end of the stand (35-3), and the pulley assembly (35-3-1) is sleeved on the steel rope (35-2) and slides along the steel rope (35-2), and the pulley assembly (35-3-1) retracts or releases the gas pipe (35-1) through the hanging rings.

4. The puffed food raw material drying production line according to claim 1, characterized in that: The discharging structure (44) is arranged through the bottom of the shell (41), and includes a corresponding second baffle (441) and a second telescopic rod (442), one end of the second baffle (441) is a free end, and the other end is hinged to the shell (41), and one end of the second telescopic rod (442) is fixed to the shell (41), and the other end is hinged to the lower side of the second baffle (441).

5. The puffed food raw material drying production line according to claim 4, characterized in that: A first sensor (46) is further provided at the bottom of the housing (41) at the short side of the second baffle (441), and the first sensor (46) is connected to the control system.

6. The puffed food raw material drying production line according to claim 1, characterized in that: The material inlet and outlet structure (45) includes a material inlet and outlet, a third baffle (451) and a sliding assembly. The material inlet and outlet is opened on the wall of the inner drum (42). The opening position of the material inlet and outlet is opposite to the feed port (43). The third baffle (451) covers the material inlet and outlet. The sliding assembly includes a sliding bar (452), a chute (453) and a third telescopic rod (454). The sliding bar (452) is slidably set in the chute (453). The sliding bar (452) is fixed on the upper and lower sides of the third baffle (451). The chute (453) protrudes from the wall of the inner drum (42) and is provided on both sides of the material inlet and outlet. One end of the third telescopic rod (454) is fixed on the inner drum (42), and the other end is fixedly connected to the third baffle (451).

7. The puffed food raw material drying production line according to claim 1, characterized in that: There are a plurality of feed ports (43) and the feed-in and feed-out structures (45) on the top of the shell (41), and the feed ports (43) and the feed-in and feed-out structures (45) are evenly distributed along the axial direction of the drying bed (4). The feed port (43) is a funnel-shaped structure protruding from the shell (41), and the feed port (43) is communicated with the cavity of the shell (41).

8. A puffed food raw material drying production line according to any one of claims 1 to 7, characterized in that: The housing (41) is further provided with an openable operating window (411) and a fixing bracket (412). The upper side of the operating window (411) is hinged to the housing (41). A handle (411-1) is provided on the outer side of the operating window (411). The fixing bracket (412) is vertically mounted on the housing (41). A plurality of hooks (412-1) are rotatably sleeved on the fixing bracket (412). The hooks (412-1) are arranged in coordination with the handle (411-1).

9. The puffed food raw material drying production line according to claim 8, characterized in that: A second sensor (413) is also provided on the housing (41). The second sensor (413) is a travel switch, and a contact of the travel switch is in contact with the operating window (411).

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