Hot air drying equipment for spicy strips and drying method

Abstract

The invention relates to the technical field of drying equipment, in particular to hot air drying equipment for spicy strips and a drying method.The hot air drying equipment comprises a base, a conveying belt, a plurality of first pricking needles, a guiding device, two supporting assemblies, a pressing roller and a plurality of second pricking needles, the conveying belt is arranged on the base, and the first pricking needles are regularly arranged on the surface of the conveying belt; the guide device is arranged at the top of the base, the two supporting assemblies are symmetrically arranged on the guide device at intervals, the pressing roller is rotationally arranged on the two supporting assemblies and is of a shell structure, and the multiple second pricking needles are regularly arranged on the annular outer wall of the pressing roller and communicate with an inner cavity of the pressing roller so that the problem that hot air flows in from a certain direction, and the hot air cannot flow into the pressing roller is solved. The problems of uneven surface drying, low air-drying speed and the like of the spicy strips are easily caused.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, and in particular to hot air drying equipment and a drying method for spicy strips. Background Art

[0002] As a popular snack food, spicy strips usually need to go through a series of process treatments during their production, including the preparation, molding, drying and other steps of raw materials. The drying process has a crucial impact on the final quality of the spicy strips, especially on their taste, appearance and storage life. Therefore, the drying technology of spicy strips has always been an important research direction in the field of food processing. The traditional spicy strip drying process mainly includes conventional hot air circulation drying technology, which usually heats the air and uses a fan to send the hot air into the drying equipment to contact the surface of the spicy strips, thereby removing moisture from the spicy strips. Although this method is easy to operate and the equipment is mature, it has some obvious limitations, especially in terms of hot air uniformity and energy efficiency. Since hot air can only flow in from a certain direction, problems such as uneven drying of the spicy strips surface and slow air drying speed are prone to occur, resulting in low overall drying efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a hot air drying device and a drying method for spicy strips to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hot air drying device for spicy strips, comprising: a base; A conveyor belt, arranged on the base; A plurality of first needles are regularly arranged on the surface of the conveyor belt, the first needles are used for hot air discharge, and the tips of the first needles penetrate the upper surface layer of the spicy strips; A guide device, arranged on the top of the base; Two support assemblies are symmetrically spaced and arranged on the guide device; A pressure roller, rotatably disposed on the two support assemblies, the pressure roller being in a shell structure; A plurality of second needles are regularly arranged on the annular outer wall of the pressing roller, and a plurality of the second needles are connected to the inner cavity of the pressing roller, the second needles are used for hot air injection, and the tips of the second needles penetrate the lower surface layer of the spicy strips.

[0005] Preferably, the first needles and the second needles are staggered.

[0006] Preferably, directly below the pressing roller, the tip of the first needle and the tip of the second needle form a staggered overlapping area.

[0007] Preferably, the guiding device comprises: A guide plate is arranged on the top of the base, the cross section of the guide plate is a U-shaped structure, a through groove is formed on the bottom plane of the guide plate, and a plurality of auxiliary grooves are formed on two side walls of the guide plate; An adjustment plate is slidably disposed on the vertical outer wall of the guide plate, and the adjustment plate is provided with a mounting groove corresponding to the auxiliary groove; The auxiliary component is rotatably installed in the installation groove.

[0008] Preferably, the auxiliary components include: A shaft rod, rotatably disposed in the mounting groove; A flap, arranged on the shaft; An elastic member, sleeved on the shaft, and located between the bottom surface of the flap and the bottom surface of the mounting groove; A first auxiliary ring is arranged on the top surface of the mounting groove, and the first auxiliary ring is arranged coaxially with the shaft; A second auxiliary ring, disposed at the top of the flap, and the second auxiliary ring is coaxially disposed with the first auxiliary ring; a first protrusion, arranged on the bottom surface of the first auxiliary ring; The second protrusion is arranged on the top surface of the second auxiliary ring.

[0009] Preferably, when the adjustment plate moves to the minimum distance from the guide plate, the flap is located in the inner cavity of the guide plate at a distance from the distal end of the shaft rod; and when the adjustment plate moves to the maximum distance from the guide plate, the flap is located outside the guide plate at a distance from the distal end of the shaft rod.

[0010] Preferably, the inner cavity of the pressing roller is provided with an annular heating grid, and the heating grid and the pressing roller are located on the same axis.

[0011] Preferably, the axial position of the pressing roller is the injection position of the hot air source.

[0012] The present invention provides a method for using a hot air drying device for spicy strips, using the hot air drying device for spicy strips as described above, comprising the following steps: S1. Place the spicy strips on a conveyor belt and pierce the bottom surface of the spicy strips with a first needle; S2. When the spicy strips pass through the auxiliary assembly, the spicy strips push the flap to rotate, and the flaps on both sides of the guide plate squeeze the side walls of the spicy strips; S3. As the conveyor belt moves, the spicy strips gradually move below the roller; S4. The second needle pierces the top surface of the spicy strips, and at the same time, the hot air source is injected into the interior of the spicy strips by the second needle and discharged by the first needle to achieve drying of the spicy strips.

[0013] The present invention proposes a hot air drying device and drying method for spicy strips, and the beneficial effects are: the present invention inserts the first needle and the second needle that are staggered in opposite directions into the interior of the spicy strips respectively to form an air flow channel inside the spicy strips, thereby achieving drying of the spicy strips. The staggered distribution of the first needle and the second needle not only optimizes the layout of the air flow channel, but also promotes the uniform flow of hot air inside the spicy strips by physically penetrating the surface of the spicy strips. The staggered design allows the airflow to be fully mixed and evenly distributed inside the spicy strips, avoiding the heat accumulation or uneven heating that may occur in traditional heating methods, and greatly improving the drying efficiency and uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the base of the present invention; Figure 3 It is a schematic diagram of the transmission belt and wind source assembly of the present invention; Figure 4 It is a schematic diagram of the guide device of the present invention; Figure 5 It is a schematic diagram of the auxiliary components of the present invention; Figure 6 This is a schematic diagram of the interior of the pressure roller of the present invention; Figure 7 A top view of the guide plate of the present invention; Figure 8 This is a partial enlarged view of the lever of the present invention; In the figure: 1, base, 11, basic frame, 12, ventilation groove, 13, power wheel, 14, driven wheel, 2, transmission belt, 3, first needle, 4, guide device, 401, guide plate, 402, through groove, 403, auxiliary groove, 404, extension plate, 405, auxiliary wheel, 406, conveyor belt, 407, insertion rod, 408, guide column, 409, lever, 410, adjustment plate, 411, auxiliary component, 4111, shaft rod, 4112, flap, 4113, elastic member, 4114, first auxiliary ring, 4115, second auxiliary ring, 4116, first protrusion, 4117, second protrusion, 5, support component, 61, pressure roller, 62, heating grid, 63, baffle, 64, fixing rod, 7, second needle, 8, wind source component, 81, fan, 82, wind bucket. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1 to Figure 8 The present invention provides a hot air drying equipment and drying method technical solution for spicy strips. The detailed connection means are well known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0017] A hot air drying device for spicy strips comprises: a base 1, a conveyor belt 2, a plurality of first pricking needles 3, a guide device 4, two supporting components 5, a pressing roller 61 and a plurality of second pricking needles 7.

[0018] The base 1 serves as the supporting foundation of the equipment and provides stability for the entire equipment. It can be installed on the ground or the like by means including but not limited to bolt fixing. The conveyor belt 2 is arranged on the base 1. The conveyor belt 2 plays the role of material transportation in the equipment to ensure that the spicy strips can move forward stably during the drying process. A plurality of first needles 3 are regularly arranged on the surface of the conveyor belt 2. The first needles 3 can achieve physical contact and heat transfer between the inside and outside of the spicy strips. The first needles 3 pierce the surface of the spicy strips to promote the discharge of hot air, increase the airflow inside the spicy strips, and thus improve the drying efficiency. The guide device 4 is arranged on the top of the base 1. The guide device 4 is used to guide and stabilize the movement of the spicy strips. To ensure that the spicy strips do not deviate from the predetermined path during transmission, two support components 5 are symmetrically spaced on the guide device 4 to support the pressing roller 61. At the same time, the distance of the pressing roller 61 in the direction perpendicular to the ground can be adjusted to suit the use of spicy strips of different sizes. The pressing roller 61 is rotatably arranged on the two support components 5. The pressing roller 61 is in a shell structure. The main function of the pressing roller 61 is to squeeze the spicy strips through physical contact and pressure, so that the surface of the spicy strips is more closely in contact with the hot air, thereby improving the heat transfer efficiency. The two ends of the pressing roller 61 are connected to the two support components 5 through support tubes. The two support tubes are located on the axis of the pressing roller 61 and are connected to the inner cavity of the pressing roller 61. The wind source enters from one of the support tubes and is discharged by the second thorn needle 7. A plurality of second thorn needles 7 are regularly arranged on the annular outer wall of the pressing roller 61, and a plurality of second thorn needles 7 are connected with the inner cavity of the pressing roller 61, which further strengthens the airflow inside the spicy strip. The second thorn needle 7 can better guide the hot air to the surface of the spicy strip by connecting with the inner cavity of the pressing roller 61. The second thorn needle 7 is inserted into the spicy strip when the pressing roller 61 rotates, which helps the hot air penetrate the surface of the spicy strip and accelerates the evaporation of water. The size, shape and arrangement spacing of the first thorn needle 3 and the second thorn needle 7 are designed to ensure uniform heating and drying of the surface of the spicy strip. The spicy strip is arranged in a single strand and spaced on the conveyor belt 2. The first needle 3 and the second needle 7 are arranged at intervals to facilitate each spicy strip to contact the first needle 3 and the second needle 7 independently. When the spicy strip passes through the pressing roller 61, the first needle 3 is arranged on the surface of the conveyor belt 2, and the tip of the needle is arranged upward, penetrating the lower surface of the spicy strip to the inside of the spicy strip. At the same time, the tip of the second needle 7 located below the pressing roller 61 will penetrate into the inside of the spicy strip. The lengths of the first needle 3 and the second needle 7 are sufficient to penetrate the surface of the spicy strip but not completely penetrate. The inside of the spicy strip is sparse and porous and has a certain flexibility. The airflow will be injected into the spicy strip by the second needle 7 and sucked out by the first needle 3 to form a complete airflow channel. During the acupuncture process, the quality of the finished product will not be affected by structural damage to the spicy strip.

[0019] In the design of the spicy strip drying equipment, the increase in the number of rollers 61 should be adjusted according to the actual production needs to adapt to the requirements of different production scales or spicy strip drying processing capacity. When the drying demand increases, by increasing the number of rollers 61, the overall processing capacity of the equipment can be improved, while ensuring the uniform heating and drying effect of the spicy strips, the matching support components 5 are increased simultaneously, and each roller 61 needs to be equipped with a pair of support components 5. The function of the support component 5 is to fix and support the roller 61 to ensure its smooth operation and appropriate pressure application during the operation of the equipment.

[0020] The first needle 3 and the second needle 7 are staggered. The staggered distribution design of the first needle 3 and the second needle 7 is to ensure uniform heating and drying inside the spicy strips. The staggered design avoids the blockage of the airflow channel and improves the fluidity of the airflow. Through this staggered distribution, the surface and the inside of the spicy strips can receive the hot air more evenly, ensuring that each part can be sufficiently heated, thereby improving the drying effect and preventing the spicy strips from being damaged due to overheating in certain areas. When the first needle 3 and the second needle 7 are staggered, there is an interlaced flow space between the needles, so that the hot air can form a continuous airflow channel between the needles without being damaged by The direct alignment of the needles is blocked, and the hot air injected by the second needle 7 can smoothly enter the inside of the spicy strips along the dislocated path and be discharged through the first needle 3, forming a continuous and unobstructed hot air channel. At the same time, the dislocated distribution of the first needle 3 and the second needle 7 increases the contact area of ​​the hot air, so that the hot air can be more evenly distributed in different areas of the spicy strips. When the hot air is injected through the second needle 7, it will not be directly blocked by the first needle 3, but will be diffused at multiple angles inside the spicy strips, and then discharged through the dislocated second needle 7. The hot air can more evenly penetrate into the internal structure of the spicy strips, accelerating moisture migration and evaporation.

[0021] Directly below the pressing roller 61, the tip of the first needle 3 and the tip of the second needle 7 form a staggered overlapping area. The staggered overlapping area makes the hot air flow in and inside the spicy strips more uniform and orderly, thereby improving the drying efficiency. An air flow passage is formed inside the spicy strips, which helps to enhance the air circulation inside the spicy strips, reduce moisture residue, and further improve the drying efficiency.

[0022] The base 1 includes: a basic frame 11, a ventilation groove 12, a power wheel 13 and a driven wheel 14.

[0023] The base frame 11 is a frame-type structure, and the conveyor belt 2 is installed on the outer wall of the base frame 11; a guide plate 401 installation position is set on the top of the base frame 11, so that the extension direction of the guide plate 401 is set along the running direction of the conveyor belt 2, and at the same time, a ventilation groove 12 is respectively opened in the middle position of the top surface of the inner cavity of the base frame 11 and the middle position of the bottom surface of the inner cavity of the frame. The ventilation groove 12 located on the top surface of the inner cavity of the base frame 11 corresponds to the position of the through groove 402 on the guide plate 401. The base frame 11 adopts a frame structure to provide a stable support effect and provide a solid fixed platform for the installation of the conveyor belt 2. The design of the outer wall of the base frame 11 ensures that the conveyor belt 2 can be stably installed thereon and can withstand the vibration, heat and mechanical load generated during the drying process. The installation position of the conveyor belt 2 is reasonably matched with the structure of the base frame 11 to ensure the smooth operation of the conveyor belt 2. The power wheel 13 is installed at one end inside the base frame 11, and the annular outer wall of the power wheel 13 extends outward from the end of the base frame 11, and The power is connected to the transmission belt 2; the required power is provided to drive the movement of the transmission belt 2 through the connection between the outer wall of the power wheel 13 and the transmission belt 2. The power wheel 13 includes but is not limited to being driven by an electric motor, which is not shown in the figure. The motor transmits power to the power wheel 13 through a transmission system (such as a belt, gear or coupling) to rotate and drive the transmission belt 2. The driven wheel 14 is installed at the other end inside the basic frame 11, and the annular outer wall of the driven wheel 14 extends outward from the end of the basic frame 11 and is connected to the transmission belt 2 by power; the driven wheel 14 is used in conjunction with the power wheel 13 to jointly drive the transmission belt 2. The driven wheel 14 is installed at the other end of the basic frame 11 and helps the transmission belt 2 to maintain stable operation through the power connection with the transmission belt 2. The driven wheel 14 mainly plays a cooperating role. Through the interaction between the driven wheel 14 and the power wheel 13, it is ensured that the transmission belt 2 will not be damaged due to excessive tension during operation. The outer wall of the driven wheel 14 also extends out of the end of the basic frame 11 to reduce resistance and achieve smooth power transmission.

[0024] A wind source assembly 8 is installed in the middle position inside the basic frame 11. Its main function is to generate and control airflow to ensure that the spicy strips are evenly heated during the drying process, remove excess moisture and grease, and avoid polluting the equipment system. The wind source assembly 8 includes: a fan 81 and two wind buckets 82. The fan 81 is set in the middle position inside the basic frame 11 and is driven by an external power. The fan 81 is located in the middle position inside the basic frame 11, which can effectively shorten the airflow transmission path, reduce energy loss, simplify the pipeline layout, and improve the overall efficiency of the system. The two wind buckets 82 are respectively The air vents 12 are respectively connected to the middle position of the top surface of the inner cavity of the base frame 11 and the middle position of the bottom surface of the inner cavity of the base frame 11, and are used to guide the airflow generated by the fan 81 to different required areas. The air outlet of the fan 81 is respectively connected to one of the support pipes and the wind bucket 82 located at the middle position of the bottom surface of the inner cavity of the base frame 11 through a diversion device. The fan 81 includes but is not limited to a multi-outlet centrifugal fan, which is specially used for equipment that requires air outlet in multiple directions, and can realize radial and axial multi-channel airflow output to ensure that the airflow enters the inner cavity of the pressure roller 61 respectively. , and through the wind scoop 82 located in the middle of the bottom surface of the inner cavity of the basic frame 11, the air flow in the pressure roller 61 is discharged by the second pricking needle 7 after being heated, and the gas discharged from the air permeable groove 12 located in the middle of the bottom surface of the inner cavity of the basic frame 11 blows through the first pricking needle 3 located at the bottom of the basic frame 11, and the first pricking needle 3 located at the bottom of the basic frame 11 is cleaned. The air inlet of the fan 81 is connected to the wind scoop 82 located on the top surface of the inner cavity of the basic frame 11, and negative pressure is formed at the tail end of the first pricking needle 3 located at the top of the basic frame 11, so that the spicy strips inserted into the spicy strips are cleaned. The first needle 3 forms an air extraction effect, and cooperates with the second needle 7 to form a complete airflow path. In order to ensure the correct diversion of the airflow and ensure the efficient operation of the equipment, the diversion device arranged at the air outlet of the fan 81 includes but is not limited to an airflow distributor. The airflow distributor is used to divert the airflow generated by the fan 81 according to the required direction, flow rate and pressure. By installing an oil filter in the pipeline, oil droplets can be effectively blocked from entering the fan 81 system, and oil can be prevented from accumulating or adhering in the pipeline. The airflow distributor, oil filter and connecting pipeline are not shown in the figure.

[0025] The guide device 4 includes: a guide plate 401, an extension plate 404, an auxiliary wheel 405, a conveyor belt 406, an insertion rod 407, a through slot 402, an auxiliary slot 403, a guide column 408, a lever 409, an adjustment plate 410, an auxiliary component 411 and a lever 409.

[0026] The guide plate 401 is arranged on the top of the base 1. The cross section of the guide plate 401 is a U-shaped structure, which is mainly used to guide the movement of the spicy strips. A through slot 402 is opened on the bottom plane of the guide plate 401. The area of ​​the through slot 402 is the operation area of ​​the conveyor belt 2, and it is also the circulation area of ​​the airflow. Extension plates 404 are respectively arranged at both ends of the guide plate 401. The cross-sectional shape of the two extension plates 404 is the same as that of the guide plate 401. Conveyor belts 406 are respectively arranged on the bottom surfaces of the two extension plates 404. The conveyor belts 406 are used to convey the spicy strips to the area of ​​the through slot 402. The extension plate 404 located downstream of the conveyor belt 2 04 is provided with an insertion rod 407, which is used to remove the spicy strips from the first pricking needle 3 after passing through the pressing roller 61, and move them to the corresponding extension plate 404. The insertion rod 407 extends along the moving direction of the spicy strips. When the spicy strips move to the position of the insertion rod 407, the insertion rod 407 will be inserted between the spicy strips and the conveyor belt 2. As the conveyor belt 2 continues to move, the first pricking needle 3 will be separated from the spicy strips, and the spicy strips will move to the conveyor belt 406 located downstream of the conveyor belt 2. At the same time, an auxiliary wheel 405 is provided at the upstream position of the conveyor belt 2. When the spicy strips are conveyed to the upstream position of the conveyor belt 2 via one of the extension plates 404, Under the extrusion of the auxiliary wheel 405, the first pricking needle 3 is ensured to be inserted into the bottom surface of the spicy strips and move synchronously with the conveyor belt 2. The two side walls of the guide plate 401 are provided with a plurality of auxiliary grooves 403. The auxiliary grooves 403 cooperate with the auxiliary components 411 to squeeze the side walls of the spicy strips. The adjustment plate 410 is slidably arranged on the vertical outer wall of the guide plate 401, and the adjustment plate 410 is provided with a mounting groove corresponding to the auxiliary groove 403. The distance between the adjustment plate 410 and the guide plate 401 can be changed by the guide column 408 on the side wall of the guide plate 401. At the same time, the side wall of the guide plate 401 is provided with a lever 409 to adjust the distance between the adjustment plate 410 and the guide plate 401. The position of the adjustment plate 410 is locked and fixed to prevent the adjustment plate 410 from moving when the auxiliary component 411 squeezes the side wall of the spicy strips. One end of the lever 409 is rotatably installed on the vertical outer wall of the guide plate 401. When the adjustment plate 410 is in contact with the guide plate 401, the lever 409 is rotated, and the end of the lever 409 farthest from the rotation center will move to the outer wall of the adjustment plate 410, thereby fixing the adjustment plate 410. The auxiliary component 411 is rotatably installed in the installation groove, which is used to squeeze the side wall of the spicy strips during the movement of the spicy strips, and at the same time produce a vibration effect to improve the drying efficiency.

[0027] The auxiliary component 411 includes: a shaft 4111 , a flap 4112 , an elastic member 4113 , a first auxiliary ring 4114 , a second auxiliary ring 4115 , a first protrusion 4116 and a second protrusion 4117 .

[0028] The shaft 4111 is rotatably arranged in the mounting groove to support the rotational movement of the flap 4112. The flap 4112 is arranged on the shaft 4111. During the movement of the spicy strip, the flap 4112 will be pushed to rotate in a circle with the shaft 4111 as a circle. The far end of the flap 4112 from the shaft 4111 will squeeze the side wall of the spicy strip. The far end of the flap 4112 from the shaft 4111 is a smooth arc surface and has a large area so that it can contact the spicy strip more stably and form a sufficient squeezing area while avoiding damage to the surface of the spicy strip. The end face of the flap 4112 is a slightly arc-shaped or inclined structure so that it can smoothly contact and generate thrust during the movement of the spicy strip. The elastic member 4113 is sleeved on the shaft 4111, and the elastic member 4113 is located between the bottom surface of the flap 4112 and the bottom surface of the mounting groove, including but not limited to A compression spring is used to ensure that the flap 4112 always has a tendency to move upward, that is, to ensure that the first auxiliary ring 4114 and the second auxiliary ring 4115 always remain in close contact, the first auxiliary ring 4114 is arranged on the top surface of the installation groove, and the first auxiliary ring 4114 and the shaft 4111 are arranged coaxially, the second auxiliary ring 4115 is arranged at the top of the flap 4112, and the second auxiliary ring 4115 and the first auxiliary ring 4114 are arranged coaxially, the first protrusion 4116 is arranged on the bottom surface of the first auxiliary ring 4114, and the second protrusion 4117 is arranged on the top surface of the second auxiliary ring 4115, and the relative movement of the first protrusion 4116 and the second protrusion 4117 is utilized to make periodic mutual contact occur when the flap 4112 rotates, thereby generating vibration, wherein the first protrusion 4116 and the second protrusion 4117 are hemispherical protrusions.

[0029] When the adjustment plate 410 moves to the minimum distance from the guide plate 401, the flap 4112 is located in the inner cavity of the guide plate 401 at the distal end of the shaft 4111; when the adjustment plate 410 moves to the maximum distance from the guide plate 401, the flap 4112 is located outside the guide plate 401 at the distal end of the shaft 4111.

[0030] The inner cavity of the pressure roller 61 is provided with an annular heating grid 62, and the heating grid 62 and the pressure roller 61 are located on the same axis. The heating grid 62 adopts a heating method including but not limited to resistance wire heating. The air source is injected from the center position of the heating grid 62, is heated when passing through the heating grid 62, and is discharged through the second needle 7.

[0031] The axial position of the pressure roller 61 is the injection position of the wind source. The wind source is set at the axial position of the pressure roller 61 and passes through the heating grille 62, so that the hot air diffuses from the center to the surroundings and is transmitted along the annular heating grille 62 to achieve uniform heating.

[0032] The heating grid 62 is arranged on a side wall of the inner cavity of the pressure roller 61, and a baffle 63 is arranged in the inner cavity of the pressure roller 61. The baffle 63 is a partial annular structure, and the bottom of the baffle 63 is an open structure, which ensures that the second needles 7 located at the bottom of the pressure roller 61 are in an open state, and the other second needles 7 are in a closed state. The baffle 63 is connected to the outside of the pressure roller 61 through a fixed rod 64, and the fixed rod 64 extends to the outside of the pressure roller 61 through another supporting tube and is connected to the guide plate 401, so that the baffle 63 remains stationary. A line connected to the heating grid 62 is arranged at the axis of the fixed rod 64, and a slip ring is provided to ensure that the heating grid 62 still maintains a power supply effect when rotating.

[0033] The present invention provides a method for using a hot air drying device for spicy strips, using the hot air drying device for spicy strips as described above, comprising the following steps: S1. Place the spicy strips on the conveyor belt 2, and pierce the bottom surface of the spicy strips with the first needle 3; S2. When the spicy strips pass through the auxiliary component 411, the spicy strips push the flap 4112 to rotate, and the flaps 4112 on both sides of the guide plate 401 squeeze the side walls of the spicy strips; S3. As the conveyor belt 2 moves, the spicy strips gradually move below the pressure roller 61; S4. The second pricking needle 7 pierces the top surface of the spicy strips, and at the same time, the hot air source is injected into the interior of the spicy strips by the second pricking needle 7 and discharged by the first pricking needle 3 to achieve drying of the spicy strips.

[0034] Working principle: The extension plate 404 is connected to the production line of spicy strips. The spicy strips will enter the range of the through slot 402 through the extension plate 404 located upstream of the conveyor belt 2. Under the action of the auxiliary wheel 405, the first needle 3 is inserted into the bottom surface of the spicy strips. At the same time, during the movement of the spicy strips, the flap 4112 is pushed and rotated by the spicy strips to squeeze the side walls of the spicy strips and provide a vibration effect. The vibration can cause a tiny physical disturbance on the surface of the spicy strips, thereby breaking the static air layer on the surface of the food. The vibration helps to disrupt the layer, promote the diffusion of moisture into the airflow, accelerate the evaporation of moisture, shorten the drying time, and move the spicy strips to the compression. When the spicy strips are below the roller 61, the spicy strips come into contact with the second needles 7, driving the rotation of the pressing roller 61. At the same time, the second needles 7 pierce the upper surface of the spicy strips. At this time, the first needles 3 and the second needles 7 form an air flow passage inside the spicy strips. The air flow generated by the fan 81 is heated by the heating grid 62 in the inner cavity of the pressing roller 61, and is discharged into the interior of the spicy strips by the second needles 7 located at the bottom of the pressing roller 61. The suction force generated by the fan 81 absorbs and discharges the hot air inside the spicy strips, thereby drying the spicy strips. After the spicy strips pass the downstream of the conveyor belt 2, they will move to the corresponding extension plate 404 for discharge, and then the spicy strips can be collected.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot air drying device for spicy strips, characterized in that: include: Base (1); A conveyor belt (2) is arranged on the base (1); A plurality of first needles (3) are regularly arranged on the surface of the conveyor belt (2), the first needles (3) are used for hot air discharge, and the tips of the first needles (3) penetrate the upper surface layer of the spicy strips; A guide device (4) is arranged on the top of the base (1); Two support assemblies (5) are symmetrically arranged on the guide device (4); A pressure roller (61) is rotatably disposed on the two support assemblies (5), and the pressure roller (61) is in a shell structure; A plurality of second needles (7) are regularly arranged on the annular outer wall of the pressing roller (61), and a plurality of the second needles (7) are connected to the inner cavity of the pressing roller (61), and the second needles (7) are used for hot air injection, and the tips of the second needles (7) penetrate the lower surface layer of the spicy strips.

2. The hot air drying equipment for spicy strips according to claim 1, characterized in that: The first needles (3) and the second needles (7) are distributed in a staggered manner.

3. The hot air drying equipment for spicy strips according to claim 1, characterized in that: Directly below the pressure roller (61), the tip of the first needle (3) and the tip of the second needle (7) form an interlaced overlapping area.

4. The hot air drying equipment for spicy strips according to claim 1, characterized in that: The guiding device (4) comprises: A guide plate (401) is arranged on the top of the base (1); the cross section of the guide plate (401) is a U-shaped structure; a through groove (402) is provided on the bottom plane of the guide plate (401); and a plurality of auxiliary grooves (403) are provided on two side walls of the guide plate (401); An adjustment plate (410) is slidably disposed on a vertical outer wall of the guide plate (401), and a mounting groove corresponding to the auxiliary groove (403) is provided on the adjustment plate (410); The auxiliary component (411) is rotatably mounted in the mounting groove.

5. The hot air drying equipment for spicy strips according to claim 4, characterized in that: The auxiliary component (411) comprises: A shaft (4111) is rotatably disposed in the mounting groove; A flap (4112) is disposed on the shaft (4111); An elastic member (4113) is sleeved on the shaft (4111), and the elastic member (4113) is located between the bottom surface of the flap (4112) and the bottom surface of the mounting groove; A first auxiliary ring (4114) is arranged on the top surface of the mounting groove, and the first auxiliary ring (4114) and the shaft (4111) are arranged coaxially; A second auxiliary ring (4115) is arranged at the top of the flap (4112), and the second auxiliary ring (4115) and the first auxiliary ring (4114) are arranged coaxially; A first protrusion (4116) is disposed on the bottom surface of the first auxiliary ring (4114); The second protrusion (4117) is arranged on the top surface of the second auxiliary ring (4115).

6. The hot air drying equipment for spicy strips according to claim 5, characterized in that: When the adjustment plate (410) moves to the minimum distance from the guide plate (401), the flap (4112) is located in the inner cavity of the guide plate (401) at a distance from the distal end of the shaft (4111); and when the adjustment plate (410) moves to the maximum distance from the guide plate (401), the flap (4112) is located outside the guide plate (401) at a distance from the distal end of the shaft (4111).

7. The hot air drying equipment for spicy strips according to claim 1, characterized in that: The inner cavity of the pressing roller (61) is provided with an annular heating grid (62), and the heating grid (62) and the pressing roller (61) are located on the same axis.

8. The hot air drying equipment for spicy strips according to claim 7, characterized in that: The axis position of the pressing roller (61) is the injection position of the hot air source.

9. A method for using a hot air drying device for spicy strips, characterized in that: The hot air drying device for spicy strips as claimed in any one of claims 1 to 8 comprises the following steps: S1. Place the spicy strips on the conveyor belt (2), and pierce the bottom surface of the spicy strips with the first needle (3); S2. When the spicy strips pass through the auxiliary component (411), the spicy strips push the flap (4112) to rotate, and the flaps (4112) on both sides of the guide plate (401) squeeze the side walls of the spicy strips; S3. As the conveyor belt (2) moves, the spicy strips gradually move below the pressing roller (61); S4. The second pricking needle (7) is inserted into the top surface of the spicy strips, and at the same time, the hot air source is injected into the interior of the spicy strips by the second pricking needle (7) and discharged by the first pricking needle (3) to achieve drying of the spicy strips.

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