Multi-layer dryer

Abstract

The invention provides a multi-layer dryer. Relates to the technical field of food drying. The multi-layer drying machine comprises a drying machine cabinet and a cabinet door hinged to the drying machine cabinet, a plurality of partition plates are fixedly installed in the drying machine cabinet, and drying spaces are formed between every two adjacent partition plates, between the lowest partition plate and the inner wall of the bottom of the drying machine cabinet and between the uppermost partition plate and the inner wall of the top of the drying machine cabinet. A plurality of drying spaces are arranged in the drying cabinet, a plurality of supporting roll shafts are arranged in the drying spaces, hollowed-out drying baskets are arranged in the drying spaces, the bottoms of the hollowed-out drying baskets make contact with the corresponding supporting roll shafts, and a plurality of pulling and connecting rods are installed on one side of the drying cabinet in a sliding mode. The drying mechanism has the advantages that each layer of drying mechanism is provided with an independent air supply system, and the drying uniformity of food raw materials can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of food drying, in particular to a multi-layer drying machine. Background Art

[0002] In the preparation process of dried food, in order to eliminate most of the moisture in the raw materials, they will be dried. There are many ways of drying, such as natural air drying, hot air equipment drying, etc. Among them, natural air drying has a lower investment cost, but a slower speed, while hot air equipment drying can increase the drying speed, but the investment cost is relatively high. However, no matter which drying method is used, the dried food can be obtained in the end.

[0003] The improved hot air equipment mentioned above includes a multi-layer dryer. The overall size of this dryer is small, and multiple layers of drying mechanisms can be placed in a limited space, thereby further improving the drying efficiency. However, in actual use, it is found that this multi-layer dryer has a large temperature difference between the upper and lower layers due to the fact that it mostly uses a fixed air duct for air supply, and the air supply position is often at the bottom. This makes the drying effect of each layer of food uneven. In addition, when the food is placed in the drying basket, part of the raw materials will be stacked, so that the stacked part of the raw materials cannot be evenly dried, which leads to more defects in the drying effect and reduces the drying quality.

[0004] Therefore, it is necessary to provide a new multi-layer drying machine to solve the above-mentioned technical problems. Summary of the Invention

[0005] The object of the present invention is to provide a multi-layer drying machine in which each drying mechanism has an independent air supply system and can improve the drying uniformity of food raw materials.

[0006] In order to solve the above technical problems, the multi-layer dryer provided by the present invention includes a drying cabinet and a cabinet door hinged on the drying cabinet, a plurality of partition plates are fixedly installed in the drying cabinet, and drying spaces are provided between two adjacent partition plates, between the lowest partition plate and the bottom inner wall of the drying cabinet, and between the highest partition plate and the top inner wall of the drying cabinet. A plurality of drying spaces are provided with a plurality of supporting rollers, and a plurality of drying spaces are provided with a hollow drying basket, and the bottoms of the plurality of hollow drying baskets are in contact with the corresponding supporting rollers. A plurality of pulling rods are slidably installed on one side of the drying cabinet, and one end of the plurality of pulling rods located in the drying cabinet is detachably connected to the plurality of hollow drying baskets. A push-pull mechanism is provided above the drying cabinet to bring The movable pulling connecting rod forms a reciprocating horizontal movement; a plurality of horizontal positioning tubes are fixedly installed in the drying spaces, a plurality of vertical positioning tubes are fixedly installed on the plurality of horizontal positioning tubes, and a plurality of flared air nozzles are fixedly installed on the plurality of vertical positioning tubes. A hot air blower is provided on one side of the drying cabinet, and a first air supply duct is fixedly installed on the air outlet port thereof, and one end of a plurality of ventilation ducts is fixedly installed on the first air supply duct, and the other ends of the plurality of ventilation ducts respectively extend into the corresponding drying spaces and are fixedly connected to the corresponding horizontal positioning tubes. The ventilation ducts are fixedly connected to one side of the drying cabinet, and a plurality of exhaust ducts are fixedly installed on the side of the drying cabinet away from the hot air blower, and the plurality of exhaust ducts are respectively communicated with the plurality of drying spaces.

[0007] Preferably, the plurality of support rollers are rotatably connected to one side of the drying cabinet.

[0008] Preferably, the push-pull mechanism includes a stepper motor, which is fixedly mounted on the top of the drying cabinet, a connecting turntable is fixedly mounted on the output shaft of the stepper motor, an eccentric pin is fixedly mounted on the connecting turntable, a waist hole fixing piece is slidably mounted on the eccentric pin, a push rod is fixedly mounted on one side of the waist hole fixing piece, a linkage bar is fixedly mounted on one side of the push rod, and a plurality of pulling rods are fixedly connected to the linkage bar at one end located outside the drying cabinet, and a plurality of ventilation ducts pass through the linkage bar and are slidably connected to the linkage bar.

[0009] Preferably, a plurality of the pulling rods are located in the drying cabinet and are fixedly installed with a fixing block at one end thereof, a plurality of the fixing blocks are provided with a built-in slot, a side of the built-in slot away from the pulling rod is set as an opening, a plurality of connecting blocks are inserted into the built-in slots, one side of the plurality of connecting blocks is respectively fixedly connected to a plurality of the hollow drying baskets, a plurality of the connecting blocks are provided with a positioning hole at the top, a plurality of the fixing blocks are fixedly installed with a positioning folding piece at the top, a plurality of the positioning folding pieces are threadedly installed with a screw, a plurality of the screws are fixedly installed with a positioning head at the bottom end, a plurality of the positioning heads have their bottom ends extended into a plurality of the positioning holes respectively, and the positioning heads are in contact with the inner wall of the positioning hole.

[0010] Preferably, the drying cabinet is provided with a storage box on a side away from the hot air blower, a condenser is fixedly mounted on the top of the storage box, and the ends of the multiple exhaust ducts are fixedly mounted with the same air guide duct, one end of the air guide duct is connected to the air inlet port of the condenser, the first fan is fixedly mounted on the outer wall of the storage box on one side close to the drying cabinet, one end of the air inlet duct is fixedly mounted on the air outlet port of the first fan, the other end of the air inlet duct extends into the interior of the storage box through the top of the storage box, and the air inlet duct is fixedly connected to the top of the storage box, a second fan is fixedly mounted on the outer wall of the storage box on a side away from the drying cabinet, one end of the exhaust duct is fixedly mounted on the air inlet port of the second fan, the other end of the exhaust duct extends into the interior of the storage box through the top of the storage box, the exhaust duct is fixedly connected to the top of the storage box, a second air supply duct is fixedly mounted on the air outlet port of the second fan, one end of multiple connecting pipes is fixedly mounted on the second air supply duct, and the other ends of the multiple connecting pipes are respectively fixedly connected to the multiple ventilation ducts.

[0011] Preferably, a limit plate is fixedly installed on the top of the drying cabinet, the push rod passes through the limit plate and is slidably connected to the limit plate, and a first circular sealing gasket and multiple sealing strips are fixedly installed on the side of the cabinet door close to the drying cabinet, and the multiple sealing strips are all located in the first circular sealing gasket, one side of the first circular sealing gasket is in conflict with the drying cabinet, and the two sides of the sealing strip are respectively fixed to the inner walls on both sides of the first circular sealing gasket, and the multiple sealing strips are respectively in conflict with the multiple partition plates.

[0012] Preferably, a suction pipe head is fixedly installed on the air inlet port of the first fan, a filter sleeve is threadedly provided on the suction pipe head, a filter disc is fixedly installed in the filter sleeve, a first electric air valve is provided on the first air supply duct, a second electric air valve is provided on each of the multiple connecting pipes, a third electric air valve is provided on the air guide duct, a plurality of ventilation pipes are fixedly installed on the cabinet door, the plurality of ventilation pipes are respectively connected to the plurality of drying spaces, and a fourth electric air valve is provided on each of the multiple ventilation pipes.

[0013] Preferably, multiple supporting rollers are slidably connected to one side of the drying cabinet, and a back-connecting plate is provided on the outside of the drying cabinet, and multiple supporting rollers pass through the back-connecting plate and are rotatably connected to the back-connecting plate. A flat plate is fixedly installed on the top of the drying cabinet, and the flat plate is flush with one outer wall of the drying cabinet. A first fixed folding plate is fixedly installed on the top of the flat plate, and an electric push rod is fixedly installed on the side of the first fixed folding plate away from the drying cabinet, and the output shaft of the electric push rod passes through the first fixed folding plate and is slidably connected to the first fixed folding plate, and a second fixed folding plate is fixedly installed on the output shaft of the electric push rod, and a lifting screw is rotatably installed on the top of the second fixed folding plate, and a lifting arm is threadedly installed on the lifting screw, one side of the lifting arm is fixedly connected to the back-connecting plate, and a servo motor is fixedly installed on the top of the second fixed folding plate, and the output shaft of the servo motor is fixedly connected to the top of the lifting screw.

[0014] Preferably, a plurality of movable waist holes are provided on one side of the drying cabinet, and a plurality of the support rollers respectively pass through the plurality of movable waist holes and contact the inner walls of the corresponding movable waist holes. A second circular sealing gasket is fixedly installed on the side of the back plate close to the drying cabinet, and the second circular sealing gasket conflicts with the outer wall of one side of the drying cabinet. A plurality of the support rollers are provided with threaded countersunk holes at one end away from the back plate, and a plurality of threaded heads are threadedly installed in the threaded countersunk holes. A plurality of the threaded heads are fixedly installed with a limiting plate at one end away from the back plate, and the diameter of the limiting plate is larger than the diameter of the support roller.

[0015] The present invention also provides a drying method of a multi-layer drying machine, comprising the following steps: S1. Prepare ingredients: clean the ingredients to be dried and slice or dice them; S2. Drying the ingredients: Place the cut ingredients to be dried in the hollow drying basket in the multi-layer dryer and close the door to dry them; S3. Take out the finished product: After the food is dried, wait for it to cool down and then take it out of the drying cabinet.

[0016] Compared with the related art, the multi-layer drying machine provided by the present invention has the following beneficial effects: 1. The present invention provides multiple drying spaces, and in each drying space, a hollow drying basket and multiple flared air nozzles for ejecting hot air are provided, thereby forming multiple independent drying systems, thereby ensuring that food materials between multiple layers are evenly dried, thereby improving drying uniformity. At the same time, during the drying process, the stepper motor can be intermittently started to drive the hollow drying basket to intermittently swing back and forth, thereby breaking up the stacked raw materials, so that the stacked parts between the raw materials can be exposed, further improving drying uniformity. 2. The present invention can condense the high-temperature steam with water vapor generated during drying by setting a condenser to produce low-temperature water, and then use a storage box to collect the low-temperature water. Then, by using the cooperation of the first fan and the second fan, after the drying is completed, the outside air is quickly cooled by the low-temperature water, and then sprayed on the hollow drying basket, so that the hollow drying basket and the dried food can be quickly cooled, so that the dried food can be quickly taken out and the next batch of drying can be carried out, which reduces the time waiting for cooling and speeds up the drying efficiency. In addition, the above method recycles the high-temperature steam generated during the drying process, thereby improving the utilization rate of thermal energy and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of the first embodiment of the multi-layer drying machine provided by the present invention Figure I ; Figure 2 A three-dimensional diagram of the first embodiment of the multi-layer drying machine provided by the present invention Figure II ; Figure 3 A rear perspective structural diagram of a first embodiment of a multi-layer drying machine provided by the present invention; Figure 4 A side plan view schematic diagram of the structure of a first embodiment of a multi-layer drying machine provided by the present invention; Figure 5 A schematic diagram of the internal structure of a drying cabinet in the first embodiment of the multi-layer drying machine provided by the present invention; Figure 6 A schematic diagram of the distribution of the longitudinal positioning pipes in the first embodiment of the multi-layer drying machine provided by the present invention; Figure 7 A schematic diagram of the front planar connection structure of the longitudinal positioning tubes and the transverse positioning tubes in the first embodiment of the multi-layer drying machine provided by the present invention; Figure 8 for Figure 6 The enlarged structural diagram of part A is shown; Figure 9 A schematic diagram of the assembly structure of the hollow drying basket and the connecting rods in the first embodiment of the multi-layer drying machine provided by the present invention; Figure 10 A schematic diagram of the disassembled state of the retaining block and the connecting block in the first embodiment of the multi-layer drying machine provided by the present invention; Figure 11 A schematic diagram of the assembly structure of the condenser and the storage box in the first embodiment of the multi-layer drying machine provided by the present invention; Figure 12 A schematic structural diagram of the first fan in the first embodiment of the multi-layer drying machine provided by the present invention; Figure 13 A schematic diagram of the connection structure between the first circular sealing gasket and the sealing strip in the first embodiment of the multi-layer drying machine provided by the present invention; Figure 14 A schematic diagram of the three-dimensional structure of a second embodiment of a multi-layer drying machine provided by the present invention; Figure 15 A schematic front plan view of the movable waist hole in the second embodiment of the multi-layer drying machine provided by the present invention; Figure 16 This is a schematic diagram of the assembly of the movable waist hole and the support roller in the second embodiment of the multi-layer drying machine provided by the present invention; Figure 17 A schematic diagram of the connection structure between the support roller and the back plate in the second embodiment of the multi-layer drying machine provided by the present invention; Figure 18 A schematic diagram of the connection structure between the back plate and the lifting arm in the second embodiment of the multi-layer drying machine provided by the present invention; Figure 19 This is a schematic diagram of the cross-sectional connection structure of the support roller and the limiting plate in the second embodiment of the multi-layer drying machine provided by the present invention.

[0018] Numbers in the figure: 1. Drying cabinet; 2. Partition board; 3. Drying space; 4. Cabinet door; 5. Support roller; 6. Hollow drying basket; 7. Stepper motor; 8. Connecting turntable; 9. Eccentric pin; 10. Waist hole fixing piece; 11. Push rod; 12. Linkage bar; 13. Pull rod; 14. Retaining block; 15. Built-in slot; 16. Connecting block; 17. Positioning hole; 18. Positioning flap; 19. Screw; 20. Positioning head; 21. Horizontal positioning tube; 22. Vertical positioning tube; 23. Expanding nozzle; 24. Hot air blower; 25. First air supply duct; 26. Ventilation duct; 27. Condenser ; 28. Exhaust duct; 29. ​​Air guide duct; 30. Storage box; 31. First fan; 32. Air inlet duct; 33. Suction duct head; 34. Filter sleeve; 35. Second fan; 36. Exhaust duct; 37. Second air supply duct; 38. Connecting pipe; 39. First circular sealing gasket; 40. Sealing strip; 41. Movable waist hole; 42. Back plate; 43. Flat plate; 44. First fixed folding plate; 45. Electric push rod; 46. Second fixed folding plate; 47. Lifting screw; 48. Lifting arm; 49. Second circular sealing gasket; 50. Threaded countersunk hole; 51. Limiting plate; 52. Threaded head. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] First embodiment: Please refer to Figures 1-13 In the first embodiment of the present invention, a multi-layer dryer includes a drying cabinet 1 and a cabinet door 4 hinged on the drying cabinet 1, and a plurality of partition boards 2 are fixedly installed in the drying cabinet 1, and a drying space 3 is formed between two adjacent partition boards 2, between the lowest partition board 2 and the bottom inner wall of the drying cabinet 1, and between the highest partition board 2 and the top inner wall of the drying cabinet 1, and a first circular sealing gasket 39 and a plurality of sealing strips 40 are fixedly installed on the side of the cabinet door 4 close to the drying cabinet 1, and the plurality of sealing strips 40 are all located in the first circular sealing gasket 39, and one side of the first circular sealing gasket 39 conflicts with the drying cabinet 1, and the two sides of the sealing strip 40 are respectively fixed to the two side inner walls of the first circular sealing gasket 39, and the plurality of sealing strips 40 respectively conflict with the plurality of partition boards 2. At this point, each drying space 3 is independent under the action of the first circular sealing gasket 39 and the sealing strip 40, thereby forming a plurality of independent drying units; The drying rack 1 is provided with a plurality of supporting rollers 5, and the plurality of supporting rollers 5 are rotatably connected to the inner wall of one side of the drying cabinet 1. At the same time, a plurality of drying spaces 3 are provided with a hollow drying basket 6. The hollow drying basket 6 has a porous structure throughout, so that hot air can smoothly enter the hollow drying basket 6 to dry the food. The bottoms of the plurality of hollow drying baskets 6 are in contact with the corresponding supporting rollers 5, so that a support can be provided for the hollow drying basket 6. A plurality of pulling rods 13 are slidably installed on one side of the drying cabinet 1. The plurality of pulling rods 13 are located in the drying cabinet 1. One end thereof is detachably connected to the plurality of hollow drying baskets 6, so that it is convenient to take out the hollow drying basket 6 after drying and pour out the dried food therein. A push-pull mechanism is provided above the drying cabinet 1, which can drive the hollow drying basket 6 to form a reciprocating horizontal movement, thereby generating a shaking force on the raw materials stacked therein, so that the raw materials can be scattered and the drying uniformity is improved. A horizontal positioning tube 21 is fixedly installed in the drying space 3, and multiple horizontal positioning tubes 21 are respectively located below multiple hollow drying baskets 6, and multiple vertical positioning tubes 22 are fixedly installed on multiple horizontal positioning tubes 21, and multiple flared air nozzles 23 are fixedly installed on multiple vertical positioning tubes 22. A hot air blower 24 is provided on one side of the drying cabinet 1, and a first air supply duct 25 is fixedly installed on its air outlet port. One end of multiple ventilation ducts 26 is fixedly installed on the first air supply duct 25, and the other ends of multiple ventilation ducts 26 extend into the corresponding drying space 3 and are fixedly connected to the corresponding horizontal positioning tube 21. The ventilation duct 26 is fixedly connected to one side of the drying cabinet 1, so that by starting the hot air blower 24, hot air can be sent into the drying space 3 through the flared air nozzle 23 to achieve a drying effect. Multiple exhaust ducts 28 are fixedly installed on the side of the drying cabinet 1 away from the hot air blower 24, and multiple exhaust ducts 28 are respectively connected to multiple drying spaces 3.

[0021] In the push-pull mechanism mentioned in the above-mentioned manner, a stepper motor 7 is included, which is fixed to the top of the drying cabinet 1. A rotating disk 8 is fixedly installed on the output shaft of the stepper motor 7. An eccentric pin 9 is fixedly installed on the rotating disk 8. A waist hole fixing member 10 is slidably installed on the eccentric pin 9. A push rod 11 is fixedly installed on one side of the waist hole fixing member 10. A linkage bar 12 is fixedly installed on one side of the push rod 11. One end of each of the pull rods 13 located outside the drying cabinet 1 is fixedly connected to the linkage bar 12, and a plurality of the ventilation ducts 26 are all passed through. It passes through the linkage bar 12 and is slidably connected to the linkage bar 12. Through the operation of the stepper motor 7, the cooperation between the eccentric pin 9 and the waist hole fixing piece 10 can be used to drive the linkage bar 12 to move back and forth left and right, and then the hollow drying basket 6 can be driven to move back and forth left and right under the drive of the pulling rod 13, which can cause the food raw materials inside it to shake and break up the food raw materials. In addition, a limit plate is fixedly installed on the top of the drying cabinet 1, and the push rod 11 passes through the limit plate and is slidably connected to the limit plate to play a limiting role.

[0022] In this embodiment, in order to facilitate the disassembly and assembly of the hollow drying basket 6, a retaining block 14 is fixedly installed at one end of the plurality of connecting rods 13 located in the drying cabinet 1, and a plurality of retaining blocks 14 are provided with built-in slots 15. The side of the built-in slots 15 away from the connecting rods 13 is set as an opening, and a connecting block 16 is inserted into the plurality of built-in slots 15. The connecting block 16 contacts the bottom side wall of the built-in slot 15, and the hollow drying basket 6 is in contact with one side of the retaining block 14, thereby ensuring that as long as the connecting block 16 is fully inserted into the built-in slot 15, the positioning hole 17 and the positioning head 20 mentioned below correspond to each other up and down. Then, one side of the multiple connecting blocks 16 is fixedly connected to the multiple hollow drying baskets 6 respectively, and the tops of the multiple connecting blocks 16 are provided with positioning holes 17, and the tops of the multiple retaining blocks 14 are fixedly installed with positioning folds 18, and the multiple positioning folds 18 are threadedly installed with screws 19, and the bottom ends of the multiple screws 19 are fixedly installed with positioning heads 20, and the bottom ends of the multiple positioning heads 20 extend into the multiple positioning holes 17 respectively, and the positioning heads 20 are in contact with the inner walls of the positioning holes 17. The hollow drying basket 6 can be quickly disassembled and assembled by simply rotating the screw 19 clockwise or counterclockwise.

[0023] In this embodiment, in order to reduce the loss of heat source and improve the utilization rate of heat energy during the drying process, a storage box 30 can be provided on the side of the drying cabinet 1 away from the hot air blower 24, and a condenser 27 is fixedly installed on the top of the storage box 30. The ends of the plurality of exhaust pipes 28 are fixedly installed with the same air guide pipe 29, one end of the air guide pipe 29 is connected to the air inlet port of the condenser 27, and a pressure relief valve is provided on the storage box 30 to discharge excess gas. The storage box 30 is close to one side of the drying cabinet 1. A first fan 31 is fixedly mounted on the side outer wall, and an air suction pipe head 33 is fixedly mounted on the air inlet port thereof. A filter sleeve 34 is threadedly sleeved on the air suction pipe head 33, and a filter disc is fixedly mounted inside the filter sleeve 34 to filter the inhaled air. One end of an air inlet pipe 32 is fixedly mounted on the air outlet port of the first fan 31, and the other end of the air inlet pipe 32 extends to the interior of the storage box 30 through the top of the storage box 30, and the air inlet pipe 32 is fixedly mounted on the top of the storage box 30. The first fan 31 and the second fan 35 are connected to each other, and the first fan 31 and the second fan 35 are connected to each other.

[0024] In the above method, in order to ensure that the airflow can flow in the correct path, a first electric gas valve is provided on the first air supply duct 25, a second electric gas valve is provided on the multiple connecting pipes 38, a third electric gas valve is provided on the air guide pipe 29, and a plurality of ventilation pipes are fixedly installed on the cabinet door 4. The multiple ventilation pipes are respectively connected to the multiple drying spaces 3, and a fourth electric gas valve is provided on the multiple ventilation pipes. The correct direction of the airflow is guided by opening and closing each electric gas valve.

[0025] In this embodiment: In the initial state, the first electric valve, the second electric valve, the third electric valve and the fourth electric valve are all closed; When it is necessary to dry the sheet or block food raw materials, first open the cabinet door 4, then add the raw materials to be dried into each hollow drying basket 6, and then close the cabinet door 4; Next, open the first electric air valve on the first air supply duct 25 and the third electric air valve on the air guide duct 29, and then start the hot air blower 24. The hot air generated by the hot air blower 24 will first enter the first air supply duct 25, and then smoothly enter each ventilation duct 26, and then enter the multiple horizontal positioning tubes 21. Then, these hot airs enter the vertical positioning tubes 22, and finally are ejected through the multiple flared air nozzles 23, so that the food raw materials in each drying space 3 can be dried. During the drying process, the stepper motor 7 can be started, and its output shaft drives the turntable 8 to rotate. When rotating, it is connected with the eccentric pin 9, and the waist hole is fixed Component 10 then drives the push rod 11 to do reciprocating left and right motions. At this time, driven by the linkage bar 12 and the pull rod 13, multiple hollow drying baskets 6 synchronously perform reciprocating left and right motions, so that the raw materials stacked in the hollow drying baskets 6 can be shaken. During the shaking process, the originally stacked raw materials will be separated until the stepper motor 7 runs for a period of time and then turns it off. At this time, the originally stacked parts between the raw materials will be revealed, so that they can be dried normally. In the drying process, the stepper motor 7 is started once at intervals, so that the hollow drying baskets 6 can be shaken intermittently, thereby reducing the time that the stacking state between the raw materials is maintained; During the drying process, the water vapor evaporated from the food is discharged into the air duct 29 along with the air flow through the exhaust pipe 28. The air duct 29 then discharges the water vapor into the condenser 27. The condenser 27 processes the high-temperature air flow, thereby converting the water vapor in the air flow into a low-temperature liquid state and discharging it into the storage box 30. A small amount of gas will be discharged into the storage box 30 along with the liquid water. At this time, the one-way pressure relief valve in the storage box 30 can be opened to discharge the excess gas. After the drying of the food raw materials is completed, in order to quickly cool down the hollow drying basket 6 so that the staff can take it out and pour out the dried food inside as soon as possible, the first electric air valve and the third electric air valve can be closed, and the second electric air valve and the fourth electric air valve can be opened. Then the first fan 31 is started first, and the first fan 31 will draw in the outside air. The outside air is first filtered by the filter sleeve 34 and then enters the air inlet pipe 32, and then passes into the storage box 30. The filtered air will directly contact the low-temperature condensed water, which can quickly cool the air on the one hand, and on the other hand On the one hand, it can be filtered again, where tiny dust particles will come into contact with condensed water and settle, and then the relatively pure air will rise. At the same time, the second fan 35 is started, and the rising air enters the exhaust pipe 36, passes through the drying box for drying, and then enters the second air supply duct 37, and then enters the multiple ventilation ducts 26 through multiple connecting pipes 38, and then enters the vertical positioning pipe 22 through the horizontal positioning pipe 21, and finally is ejected through the expanded air nozzle 23, so that the hollow drying basket 6 with a higher temperature can be quickly cooled, and the provided ventilation pipe can discharge the ejected air; After the cooling is completed, the first fan 31 and the second fan 35 are turned off, and then the cabinet door 4 is opened. Then, the multiple screws 19 are rotated counterclockwise in sequence. The multiple screws 19 bring the corresponding positioning heads 20 up until the positioning heads 20 are removed from the positioning holes 17. Then, the hollow drying basket 6 can be taken out, the dried food therein is poured out, and it can be reinstalled in the drying cabinet 1, and the next batch of food drying work can be continued.

[0026] Compared with the related art, the multi-layer drying machine provided by the present invention has the following beneficial effects: 1. The present invention provides multiple drying spaces 3, and in each drying space 3, a hollow drying basket 6 and a plurality of flared air nozzles 23 for ejecting hot air are provided, thereby forming multiple independent drying systems, thereby ensuring that the food raw materials between multiple layers can be evenly dried, thereby improving the drying uniformity. At the same time, during the drying process, the stepper motor 7 can be intermittently started to drive the hollow drying basket 6 to intermittently swing back and forth, thereby breaking up the stacked raw materials, so that the stacked parts between the raw materials can be exposed, further improving the drying uniformity. 2. The present invention can condense the high-temperature steam with water vapor generated during drying by setting a condenser 27 to produce low-temperature water, and then use the storage box 30 to collect the low-temperature water. Then, by using the cooperation of the first fan 31 and the second fan 35, after the drying is completed, the outside air is quickly cooled by the low-temperature water, and then sprayed on the hollow drying basket 6, so that the hollow drying basket 6 and the dried food can be quickly cooled, so that the dried food can be quickly taken out and the next batch of drying can be carried out, which reduces the waiting time for cooling and speeds up the drying efficiency. In addition, the above method recycles the high-temperature steam generated during the drying process, thereby improving the utilization rate of thermal energy and reducing energy consumption.

[0027] Second embodiment: Based on the multi-layer dryer provided in the first embodiment of the present application, the second embodiment of the present application provides another multi-layer dryer. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0028] The second embodiment of the present invention will be further described below with reference to the accompanying drawings and implementation plans.

[0029] Please refer to Figures 14-19In the second embodiment of the multi-layer dryer provided by the present invention: multiple supporting rollers 5 are slidably connected to one side of the drying cabinet 1, and a certain space is left between the end side where the retaining block 14 contacts the hollow drying basket 6 and the supporting roller 5 closest to the end side, so as not to hinder the normal lifting and lowering movement of the supporting roller 5, and a back plate 42 is provided on the outside of one side of the drying cabinet 1, and multiple supporting rollers 5 pass through the back plate 42 and are rotatably connected to the back plate 42, and a flat plate 43 is fixedly installed on the top of the drying cabinet 1, and the flat plate 43 is flush with one side outer wall of the drying cabinet 1, and a first fixed folding plate 44 is fixedly installed on the top of the flat plate 43, and an electric push rod 45 is fixedly installed on the side of the first fixed folding plate 44 away from the drying cabinet 1, and its output shaft passes through the first fixed folding plate 44 and is connected to the The first fixed folding plate 44 is slidably connected, and a second fixed folding plate 46 is fixedly installed on the output shaft of the electric push rod 45. A lifting screw 47 is rotatably installed on the top of the second fixed folding plate 46, and a lifting arm 48 is threadedly installed on the lifting screw 47. One side of the lifting arm 48 is fixedly connected to the back plate 42, and a column is fixed in the second fixed folding plate 46. The column passes through the lifting arm 48, thereby ensuring that the lifting arm 48 can only be lifted and lowered linearly along the column when the lifting screw 47 rotates, playing a limiting role. In addition, in order to reduce the bearing force of the output shaft of the electric push rod 45, a force dividing rod is slidably installed on the first fixed folding plate 44, and the ends of the force dividing rod close to the drying cabinet 1 are fixedly connected to the second fixed folding plate 46, and a servo motor is fixedly installed on the top of the second fixed folding plate 46, and its output shaft is fixedly connected to the top of the lifting screw 47.

[0030] In the above method, in order to enable the support roller 5 to slide up and down smoothly in a straight line on the drying cabinet 1, a plurality of movable waist holes 41 are opened on one side of the drying cabinet 1, and the plurality of support rollers 5 respectively pass through the plurality of movable waist holes 41 and contact the inner walls of the corresponding movable waist holes 41, and in order to ensure the sealing between the back plate 42 and the drying cabinet 1, a second circular sealing gasket 49 is fixedly installed on the side of the back plate 42 close to the drying cabinet 1, and the second circular sealing gasket 49 conflicts with the outer wall of one side of the drying cabinet 1, and a plurality of support rollers 5 are provided with a threaded countersunk hole 50 at one end away from the back plate 42, and a threaded head 52 is threadedly installed in the plurality of threaded countersunk holes 50, and a limit plate 51 is fixedly installed at the end of the plurality of threaded heads 52 away from the back plate 42, and the diameter of the limit plate 51 is larger than the diameter of the support roller 5. The restriction of the limit plate 51 prevents the S-shaped hook used to hang food raw materials from detaching from the support roller 5.

[0031] In this embodiment: In the initial state, the output shaft of the electric push rod 45 is in an extended state; When it is necessary to dry larger food materials, such as a whole piece of fresh meat for making jerky, the hollow drying basket 6 is not suitable for drying such food materials. In this case, the cabinet door 4 can be opened, and then the limiting piece 51 is rotated to screw the threaded head 52 thereon out of the threaded countersunk hole 50 so that the end of the support roller 5 is not blocked. Then, the screw 19 is rotated to bring the positioning head 20 out of the positioning hole 17, and the hollow drying basket 6 can be pulled out. At this time, the drying space 3 is relatively spacious, and then the limiting piece 51 is screwed back to the end of the support roller 5. Then, the output shaft of the electric push rod 45 is started to retract, so that the second circular sealing gasket 49 on the back plate 42 is separated from the outer wall of one side of the drying cabinet 1, and the servo motor is started in the positive direction. Its output shaft drives the lifting screw 47 to rotate, and the lifting arm 48 brings the back plate 42 up. At the same time, multiple support rollers 5 rise until the support rollers 5 rise to the uppermost position of the movable waist hole 41 and then the servo motor is turned off. At this time, the output shaft of the electric push rod 45 is started to extend, so that the second circular sealing gasket 49 on the back plate 42 is in conflict with the outer wall of one side of the drying cabinet 1 and the flat panel 43, and the sealing effect is re-formed. Then, multiple S hooks are taken out, and fresh meat is inserted into the lower ends of the multiple S-shaped hooks in turn, and the upper ends of the multiple S-shaped hooks are hung on the corresponding support rollers 5 in turn, and then the cabinet door 4 is closed to carry out the drying operation.

[0032] The present invention also provides a drying method of a multi-layer drying machine, comprising the following steps: S1. Prepare ingredients: clean the ingredients to be dried and slice or dice them; S2, food drying: Place the cut food to be dried in the hollow drying basket 6 in the multi-layer dryer and close the cabinet door to dry; S3, take out the finished product: After the food is dried, wait for it to cool down and then take it out from the drying cabinet 1.

[0033] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-layer drying machine, comprising a drying cabinet and a cabinet door hinged to the drying cabinet, characterized in that: A plurality of partition plates are fixedly installed in the drying cabinet, and drying spaces are provided between two adjacent partition plates, between the lowest partition plate and the bottom inner wall of the drying cabinet, and between the highest partition plate and the top inner wall of the drying cabinet. A plurality of supporting rollers are provided in the plurality of drying spaces, and a plurality of hollow drying baskets are provided in the plurality of drying spaces. The bottoms of the plurality of hollow drying baskets are in contact with the corresponding supporting rollers. A plurality of pulling rods are slidably installed on one side of the drying cabinet, and one end of the plurality of pulling rods located in the drying cabinet is detachably connected to the plurality of hollow drying baskets. A push-pull mechanism is provided above the drying cabinet to drive the pulling rods to form reciprocating horizontal movement. A plurality of horizontal positioning tubes are fixedly installed in the drying spaces, a plurality of vertical positioning tubes are fixedly installed on the horizontal positioning tubes, a plurality of flared air nozzles are fixedly installed on the vertical positioning tubes, a hot air blower is provided on one side of the drying cabinet, a first air supply duct is fixedly installed on the air outlet port thereof, one end of a plurality of ventilation ducts are fixedly installed on the first air supply duct, the other ends of the plurality of ventilation ducts respectively extend into the corresponding drying spaces and are fixedly connected to the corresponding horizontal positioning tubes, the ventilation ducts are fixedly connected to one side of the drying cabinet, a plurality of exhaust ducts are fixedly installed on the side of the drying cabinet away from the hot air blower, and the plurality of exhaust ducts are respectively communicated with the plurality of drying spaces.

2. The multi-layer drying machine according to claim 1, characterized in that: The plurality of support rollers are all rotatably connected to one side of the drying cabinet.

3. The multi-layer drying machine according to claim 1, characterized in that: The push-pull mechanism includes a stepper motor, which is fixedly installed on the top of the drying cabinet. A connecting turntable is fixedly installed on the output shaft of the stepper motor, an eccentric pin is fixedly installed on the connecting turntable, a waist hole fixing piece is slidably installed on the eccentric pin, a push rod is fixedly installed on one side of the waist hole fixing piece, and a linkage bar is fixedly installed on one side of the push rod. The ends of multiple pulling rods located outside the drying cabinet are fixedly connected to the linkage bar, and the multiple ventilation ducts pass through the linkage bar and are slidably connected to the linkage bar.

4. The multi-layer drying machine according to claim 1, characterized in that: A plurality of the pulling rods are located in the drying cabinet and are fixedly installed with a fixing block at one end thereof, a plurality of the fixing blocks are provided with a built-in slot, a side of the built-in slot away from the pulling rod is set as an opening, a plurality of connecting blocks are inserted into the built-in slots, one side of the plurality of connecting blocks is fixedly connected to a plurality of the hollow drying baskets respectively, a plurality of the connecting blocks are provided with a positioning hole at the top, a plurality of the fixing blocks are fixedly installed with a positioning folding piece at the top, a plurality of the positioning folding pieces are threadedly installed with a screw, a plurality of the screws are fixedly installed with a positioning head at the bottom end, a plurality of the positioning heads have their bottom ends extended into the plurality of positioning holes respectively, and the positioning heads are in contact with the inner wall of the positioning hole.

5. The multi-layer drying machine according to claim 1, characterized in that: The vents are connected to the top of the cabinet to remove the condenser fan, and the ends of the vents are connected to the condenser fan.

6. The multi-layer drying machine according to claim 3, characterized in that: A limit plate is fixedly installed on the top of the drying cabinet, and the push rod passes through the limit plate and is slidably connected to the limit plate. A first circular sealing gasket and multiple sealing strips are fixedly installed on the side of the cabinet door close to the drying cabinet. The multiple sealing strips are all located in the first circular sealing gasket, one side of the first circular sealing gasket is in conflict with the drying cabinet, and the two sides of the sealing strip are respectively fixed to the inner walls on both sides of the first circular sealing gasket, and the multiple sealing strips are respectively in conflict with the multiple partition plates.

7. The multi-layer drying machine according to claim 5, characterized in that: A suction pipe head is fixedly installed on the air inlet port of the first fan, a filter sleeve is threaded on the suction pipe head, a filter disc is fixedly installed in the filter sleeve, a first electric air valve is provided on the first air supply duct, a second electric air valve is provided on each of the multiple connecting pipes, a third electric air valve is provided on the air guide duct, a plurality of ventilation pipes are fixedly installed on the cabinet door, the plurality of ventilation pipes are respectively connected to the plurality of drying spaces, and a fourth electric air valve is provided on each of the multiple ventilation pipes.

8. The multi-layer drying machine according to claim 1, characterized in that: The top of the second fixed plate is fixed with a first end face and a second end face of the first fixed plate, and the top of the second fixed plate is fixed with a first fixed plate, and the bottom of the second fixed plate is fixed with a second fixed plate.

9. The multi-layer drying machine according to claim 8, characterized in that: A plurality of movable waist holes are provided on one side of the drying cabinet, and a plurality of support rollers respectively pass through the plurality of movable waist holes and contact the inner walls of the corresponding movable waist holes. A second circular sealing gasket is fixedly installed on the side of the back plate close to the drying cabinet, and the second circular sealing gasket conflicts with the outer wall of one side of the drying cabinet. A plurality of support rollers are provided with threaded countersunk holes on one end away from the back plate, and a plurality of threaded heads are threadedly installed in the threaded countersunk holes. A plurality of threaded heads are fixedly installed with a limiting plate on one end away from the back plate, and the diameter of the limiting plate is larger than the diameter of the support roller.

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