Dried milk cake drying device
By installing a rotor and fan blade in the drying box of the milk tofu drying device, it is driven to rotate to speed up the air flow rate, the problem of weakening air convection in the traditional hot air drying method is solved, and the drying efficiency and speed are significantly improved.
Patent Information
- Application Number
- CN202421390839.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-18
AI Technical Summary
In the existing hot air drying milk tofu method, since the distance between the dried milk tofu and the hot air outlet is gradually distant, the air convection near the dried milk tofu is weakened, which is not conducive to drying.
A milk tofu drying device is designed, including a drying box and a bellows connected to the drying box. The drying box is equipped with a rotor and a plurality of fan blades. The rotor and fan blades are driven to rotate through the motor to speed up the air flow rate near the drying tray and strengthen convection.
By accelerating the gas flow rate near the drying tray, strengthening the convection, significantly improving the drying efficiency and speed, overcoming the problem of weakening air convection in traditional hot air drying methods.
Smart Images
Figure CN222799484U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of food drying, and in particular to a milk tofu drying device. Background Art
[0002] The production process of milk tofu mainly includes: filtering the collected fresh milk and fermenting it naturally for 2 to 3 days, defatting the fermented fresh milk and transferring it into a container, boiling and stirring it at 55 to 65°C, filtering and separating the whey and curd, stirring and kneading the curd at 85 to 90°C, and then pouring the kneaded curd into a mold to cool and shape it to become milk tofu. However, since milk tofu is rich in nutrients and contains a certain amount of water, it is easily contaminated by microorganisms and deteriorates, which is not conducive to storage. Therefore, after making milk tofu, it will also go through a dehydration and drying process. The traditional drying method is to cut the milk tofu and then air dry it. This method is time-consuming, and the drying process is uncontrollable, which is not conducive to industrial mass production.
[0003] Therefore, some companies also use hot air drying to dehydrate milk tofu. This method is to stack the cut milk tofu on a baking tray, and then place the baking tray containing the milk tofu in multiple layers in a hot air oven. During drying, hot air passes through the baking tray containing the milk tofu from bottom to top or from top to bottom, heats the milk tofu and takes away the evaporated water in the milk tofu. However, in this method, the flow rate of the hot air becomes smaller as the distance from the hot air outlet increases, thereby weakening the air convection near the dried milk tofu, which is not conducive to drying. Utility Model Content
[0004] The present application provides a milk tofu drying device, which is used to solve the problem in the existing hot air drying method of milk tofu, that the air convection near the dried milk tofu is weakened due to the increasing distance between the dried milk tofu and the hot air outlet, which is not conducive to drying.
[0005] The present application provides a milk tofu drying device, comprising a drying box and a bellows connected to the drying box;
[0006] An exhaust port is provided at the top of the drying box, a rotary rod is vertically provided inside the drying box, one end of the rotary rod passes through the top of the drying box and is connected to the power output end of the motor; the rotary rod is rotatably connected to the drying box;
[0007] A plurality of fan blades are arranged in an array along the axis direction on the outer periphery of the rotating rod. A drying tray is arranged between two adjacent fan blades along the vertical direction in the drying box. The drying tray is supported by brackets arranged on opposite side walls in the drying box. The drying tray is movably connected to the bracket.
[0008] The wind box is arranged at the bottom of the drying box and is separated by a perforated plate;
[0009] A side wall of the wind box is provided with an opening which is communicated with the first hot air bin.
[0010] Optionally, a side wall of the wind box opposite to the first hot air bin is also connected to the second hot air bin through an opening;
[0011] The wind box is divided into a first hot air zone and a second hot air zone by a vertically arranged partition plate. The first hot air zone is connected to the first hot air bin, and the second hot air zone is connected to the second hot air bin.
[0012] Optionally, the first hot air bin comprises a first hot air bin shell, one side of the first hot air bin shell is connected to the wind box, the other side is open and is provided with a first hot air bin filter;
[0013] At least one first fan is arranged in the first hot air bin shell;
[0014] A first electric heating network is also arranged on the first hot air bin shell near the wind box.
[0015] Optionally, the second hot air bin comprises a second hot air bin shell, one side of the second hot air bin shell is connected to the wind box, the other side is open and is provided with a second hot air bin filter;
[0016] At least one second fan is arranged in the second hot air bin shell;
[0017] A second electric heating network is also arranged on the second hot air bin shell near the wind box.
[0018] Optionally, a gas distributor is provided between the orifice plate and the fan blade at the lowermost end of the rotary rod.
[0019] Optionally, the exhaust port is connected to the gas processing device via an exhaust fan.
[0020] Optionally, the first hot air chamber and the second hot air chamber are also connected to a nitrogen storage tank.
[0021] The present application provides a milk tofu drying device, which provides a rotary rod rotatably connected to the drying box in a drying box and provides a plurality of fan blades on the rotary rod. When the milk tofu in the drying box is dried with hot air, the rotary rod and the fan blades on the rotary rod are driven by a motor to rotate along with the rotary rod, thereby accelerating the air flow rate near a drying tray, strengthening convection, and improving the drying efficiency and speed, thereby overcoming the disadvantage of the traditional hot air drying method that the air convection near the dried milk tofu is weakened due to the increasing distance between the dried milk tofu and the hot air outlet, which is not conducive to drying. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0023] Figure 1 A schematic diagram of the three-dimensional structure of a milk tofu drying device provided in one embodiment of the present application;
[0024] Figure 2 A schematic diagram of the internal front view structure of a milk tofu drying device provided in one embodiment of the present application;
[0025] Figure 3 A schematic diagram of the internal structure of a milk tofu drying device provided in one embodiment of the present application;
[0026] Figure 4 A schematic diagram of the structure of a drying tray provided in one embodiment of the present application;
[0027] Figure 5 A schematic diagram of the internal structure of a milk tofu drying device provided in another embodiment of the present application;
[0028] Figure 6 A schematic diagram of the structure of a first hot air bin provided in an embodiment of the present application;
[0029] Figure 7 A schematic diagram of the structure of a second hot air bin provided in one embodiment of the present application;
[0030] Figure 8 A schematic diagram of a milk tofu drying device provided in one embodiment of the present application.
[0031] Description of reference numerals:
[0032] 1. Drying box; 2. Bellows; 3. First hot air bin; 4. Second hot air bin; 5. Gas treatment device; 7. Nitrogen storage tank; 11. Rotary rod; 12. Motor; 13. Drying tray; 14. Orifice plate; 15. Gas distributor; 16. Exhaust fan; 21. Partition; 30. First hot air bin shell; 31. First hot air bin filter; 32. First fan; 33. First electric heating network; 33. Second electric heating network; 40. Second hot air bin shell; 41. Second hot air bin filter; 42. Second fan; 43. Second electric heating network; 101. Exhaust port; 111. Fan blades; 131. Bracket. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.
[0034] like Figure 1 to Figure 4 As shown, the present application provides a milk tofu drying device, comprising a drying box 1 and a wind box 2 connected to the drying box 1;
[0035] An exhaust port 101 is provided at the top of the drying box 1. A rotary rod 11 is vertically provided inside the drying box 1. One end of the rotary rod 11 passes through the top of the drying box 1 and is connected to the power output end of the motor 12. The rotary rod 11 is rotatably connected to the drying box 1.
[0036] A plurality of fan blades 111 are arranged in an array along the axial direction on the outer periphery of the rotary rod 11. A drying tray 13 is arranged between two adjacent fan blades along the vertical direction in the drying box 1. The drying tray 13 is supported by brackets 131 arranged on opposite side walls in the drying box 1. The drying tray 13 is movably connected to the brackets 131.
[0037] The wind box 2 is arranged at the bottom of the drying box 1 and is separated by a perforated plate 14;
[0038] A side wall of the wind box 2 is provided with an opening which is communicated with the first hot air chamber 3 .
[0039] It should be noted that the drying device of the present application is also applicable to the drying of other foods, grains, etc. that can be dried by hot air.
[0040] When in use, the shape of the drying tray 13 should match the rotating rod 11, for example Figure 4 In the structure shown, the bottom of the drying tray 13 is designed to be porous to reduce the air resistance of the hot air, so that the hot air can fully contact with the milk tofu and improve the drying effect.
[0041] The fan blades 111 may be rectangular or spiral. If the fan blades are rectangular, they can enhance the convection near the drying tray 13. If the fan blades 111 are in an ascending spiral, they can promote the flow rate of hot air from bottom to top.
[0042] When in use, the cut milk tofu is evenly placed in the drying tray 13, and then the drying tray 13 containing the milk tofu is placed on the bracket 131 in the drying box 1, and the door of the drying box 1 is closed. At this time, the components in the first hot air bin 3 are opened to introduce hot air into the drying box 1, and the hot air passes through the drying tray 13 from bottom to top (the bottom of the drying tray 13 adopts a porous design), and at the same time, the motor 12 is turned on to drive the rotating rod 11 to rotate, and the fan blades on the rotating rod 11 also rotate accordingly, and the fan blades 111 will accelerate the gas flow rate near the drying tray 13 when rotating, and strengthen convection (and if the fan blade is rectangular, its ability to strengthen the convection near the drying tray 13 is strong, and if the fan blade 111 is in an ascending spiral shape, it can promote the flow rate of hot air from bottom to top), thereby accelerating the dehydration process of the milk tofu, improving the drying efficiency, and shortening the drying time.
[0043] After the hot air dries the milk tofu in the drying box 1, the hot air is discharged from the exhaust port 101 at the top of the drying box 1, and then discharged after post-treatment such as cooling and dehumidification.
[0044] When the milk tofu in the drying box 1 is dried, the corresponding electric heating device in the drying box 1 is turned off. At this time, cold air is introduced into the drying box 1. After the dried milk tofu is cooled down by the cold air, the door of the drying box 1 is opened again, and the dried and cooled milk tofu is taken out for subsequent operations such as packaging.
[0045] The present application provides a milk tofu drying device, which comprises a rotary rod 11 rotatably connected to the drying box 1 and a plurality of fan blades 111 arranged in the drying box 1. When the milk tofu in the drying box 1 is dried with hot air, the rotary rod 11 and the fan blades on the rotary rod 11 are driven by a motor 12 to rotate along with the rotary rod 11, thereby accelerating the air flow rate near a drying tray 13, strengthening convection, and improving the drying efficiency and speed, thereby overcoming the disadvantage of the traditional hot air drying method that the air convection near the dried milk tofu is weakened due to the increasing distance between the dried milk tofu and the hot air outlet, which is not conducive to drying.
[0046] like Figure 5 As shown, optionally, a side wall of the wind box 2 opposite to the first hot air bin 3 is also connected to the second hot air bin 4 through an opening;
[0047] The wind box 2 is divided into a first hot air zone and a second hot air zone by a vertically arranged partition 21. The first hot air zone is connected to the first hot air bin 3, and the second hot air zone is connected to the second hot air bin 4.
[0048] In the present application, the second hot air bin 4 is provided to play a backup role. When the first hot air bin 3 fails, the hot air bin 4 can be enabled alone to ensure that the drying process can proceed normally. Secondly, when the first hot air bin 3 and the second hot air bin 4 are enabled at the same time, the hot air rate can be increased to increase the drying speed. Moreover, the simultaneous activation of the two is also conducive to the uniform rise of hot air and the uniform drying of milk tofu. In addition, in the present application, the first hot air bin 3 and the second hot air bin 4 work independently. When in use, if the hot air temperature is too high, the electric heating network on one side can be turned off, and cold air can be introduced to adjust the hot air temperature entering the drying box 1.
[0049] In the present application, the wind box 2 is divided into the first hot air zone and the second hot air zone by the partition 21, which can ensure that the hot air entering the wind box 2 from the first hot air bin 3 and the second hot air bin 4 can work independently, avoiding the adverse consequences of equipment damage or hot air kinetic energy loss caused by the hot air supplied by the two hot air bins blowing directly against each other. In addition, after the components in the hot air bin on one side are damaged, they can be repaired without stopping the work, thereby avoiding the adverse consequences of stopping work and production due to equipment maintenance.
[0050] like Figure 5 and Figure 6 As shown, optionally, the first hot air bin 3 includes a first hot air bin shell 30, one side of the first hot air bin shell 30 is connected to the wind box 2, and the other side is open and provided with a first hot air bin filter 31;
[0051] At least one first fan 32 is disposed in the first hot air bin housing 30;
[0052] A first electric heating network 33 is also provided on the first hot air bin shell 30 near the wind box 2 .
[0053] When in use, the first fan 32 is turned on and the first electric heating network 33 is energized. The first fan 32 draws in external air, and the sucked air is filtered by the first hot air bin filter 31. The air is then heated by the first electric heating network 33 which generates heat after being energized. The heated gas passes through the perforated plate 14 from bottom to top and enters the drying box 1 to dry the milk tofu.
[0054] like Figure 5 and Figure 7 As shown, optionally, the second hot air bin 4 includes a second hot air bin shell 40, one side of the second hot air bin shell 40 is connected to the wind box 2, and the other side is open and provided with a second hot air bin filter 41;
[0055] At least one second fan 42 is disposed in the second hot air bin housing 40;
[0056] A second electric heating network 43 is also provided on the second hot air bin shell 40 near the wind box 2 .
[0057] In the present application, the structure of the second hot air bin 4 is the same as that of the first hot air bin 3, and the use process thereof is also the same, which will not be described in detail here.
[0058] like Figure 5 As shown, optionally, a gas distributor 15 is provided between the orifice plate 14 and the fan blade 111 at the lowermost end of the rotary rod 11 .
[0059] In the present application, since the hot air is blown in through the hot air bins arranged on one side or both sides of the wind box 2, the hot air flow rate at the blowing inlet is slow, which causes uneven heating of the material and affects the drying effect. The gas distributor 15 is set to evenly distribute the blown hot air to reduce the uneven heating of the material caused by the above reasons, which affects the drying effect.
[0060] like Figure 8 As shown, optionally, the exhaust port 101 is connected to the gas processing device 5 via an exhaust fan 16 .
[0061] In the present application, the hot air after the milk tofu is dried has a high humidity and carries a certain amount of heat, so it needs to be cooled and dehumidified before being discharged. If it is discharged directly, it may cause the factory environment to be unfavorable for production.
[0062] like Figure 8 As shown, optionally, the first hot air bin 3 and the second hot air bin 4 are also connected to the nitrogen storage tank 7 .
[0063] In the present application, since some nutrients contained in milk tofu will be oxidized and destroyed at high temperatures, thus affecting its edible taste and nutrition, the nitrogen storage tank 7 is connected to the hot air bin, and nitrogen is used as the gas source when drying the milk tofu, which can effectively prevent the nutrients in the milk tofu from being oxidized and destroyed during the drying process, thereby affecting its edible taste and nutrition.
[0064] A milk tofu drying device, the working process of which is as follows:
[0065] When in use, the cut milk tofu is evenly placed in the drying tray 13, and then the drying tray 13 containing the milk tofu is placed on the bracket 131 in the drying box 1, and the door of the drying box 1 is closed. At this time, the first fan 32 and the second fan 42 are turned on, and the first electric heating network 33 and the second electric heating network 43 are powered on, and then the nitrogen storage tank 7 is connected to the first hot air bin 3 and the second hot air bin 4, and nitrogen is introduced therein. The nitrogen introduced into the first hot air bin 3 and the second hot air bin 4 is filtered through the corresponding filter screens, and then heated by the electric heating network that generates heat after being powered on. The heated gas passes through the orifice plate 14 from bottom to top and enters the drying box 1. After passing through the gas distributor 15, the hot air is evenly distributed, and the hot air passes through the drying tray 13 from bottom to top (the bottom of the drying tray 13 adopts a porous design). At the same time, the motor 12 is turned on to drive the rotary rod 11 to rotate, and the fan blades on the rotary rod 11 also rotate accordingly. When rotating, the fan blades 111 will accelerate the gas flow rate near the drying tray 13 and strengthen convection (and if the fan blades are rectangular, their ability to strengthen convection near the drying tray 13 is stronger. If the fan blades 111 are in an ascending spiral shape, they can promote the flow rate of hot air from bottom to top), thereby accelerating the dehydration process of the milk tofu, improving the drying efficiency, and shortening the drying time.
[0066] After the hot air dries the milk tofu in the drying box 1, the hot and humid gas discharged from the exhaust port 101 at the top of the drying box 1 is sucked into the gas treatment device 5 by the exhaust fan 16, and then incinerated or adsorbed for harmless treatment after cooling and dehumidification.
[0067] When the milk tofu in the drying box 1 is dried, the first electric heating network 33 is turned off and the second electric heating network 43 is powered on. At this time, cold air (nitrogen) is introduced into the drying box 1. After the dried milk tofu is cooled down by the cold air, the door of the drying box 1 is opened again, and the dried and cooled milk tofu is taken out for subsequent operations such as packaging.
[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A milk tofu drying device, characterized in that: It comprises a drying box (1) and a wind box (2) connected to the drying box (1); An exhaust port (101) is provided at the top of the drying box (1); a rotary rod (11) is vertically arranged inside the drying box (1); one end of the rotary rod (11) passes through the top of the drying box (1) and is connected to the power output end of the motor (12); the rotary rod (11) is rotatably connected to the drying box (1); A plurality of fan blades (111) are arranged in an array along the axial direction on the outer periphery of the rotary rod (11); a drying tray (13) is arranged between two adjacent fan blades in the vertical direction in the drying box (1); the drying tray (13) is supported by brackets (131) arranged on opposite side walls in the drying box (1); the drying tray (13) is movably connected to the brackets (131); The wind box (2) is arranged at the bottom of the drying box (1) and is separated by a perforated plate (14); A side wall of the wind box (2) is provided with an opening and is in communication with the first hot air bin (3).
2. The milk tofu drying device according to claim 1, characterized in that: A side wall of the wind box (2) opposite to the first hot air bin (3) is also connected to the second hot air bin (4) through an opening; The wind box (2) is divided into a first hot air zone and a second hot air zone by a vertically arranged partition (21) inside the wind box (2); the first hot air zone is connected to the first hot air bin (3), and the second hot air zone is connected to the second hot air bin (4).
3. The milk tofu drying device according to claim 1, characterized in that: The first hot air bin (3) comprises a first hot air bin shell (30), one side of the first hot air bin shell (30) is connected to the wind box (2), and the other side is open and provided with a first hot air bin filter (31); At least one first fan (32) is arranged in the first hot air bin shell (30); A first electric heating network (33) is also provided on the first hot air bin shell (30) at a position close to the wind box (2).
4. The milk tofu drying device according to claim 2, characterized in that: The second hot air bin (4) comprises a second hot air bin shell (40), one side of the second hot air bin shell (40) is connected to the wind box (2), the other side is open and is provided with a second hot air bin filter (41); At least one second fan (42) is disposed in the second hot air bin shell (40); A second electric heating network (43) is also provided on the second hot air bin shell (40) near the wind box (2).
5. The milk tofu drying device according to claim 1, characterized in that: A gas distributor (15) is arranged between the orifice plate (14) and the fan blade (111) at the lowermost end of the rotary rod (11).
6. The milk tofu drying device according to claim 1, characterized in that: The exhaust port (101) is connected to the gas processing device (5) via an exhaust fan (16).
7. The milk tofu drying device according to any one of claims 1 to 6, characterized in that: The first hot air bin (3) and the second hot air bin (4) are also connected to a nitrogen storage tank (7).