A circulating drying device for yeast powder production and a drying method thereof

Abstract

The application discloses a kind of circulating drying device and drying method of yeast powder production, it is related to yeast powder drying device technical field, including continuous circulation drying, feed pipe and control panel.The application is quantitatively conveyed by being equipped with quantitative discharging mechanism and heat preservation heating mechanism cooperation intercommunication circulation mechanism material, heating drying, then the dried material is separated from conveying air power storage by collection and taking out mechanism, and is circulated and conveyed after being filtered by multilayer filtering mechanism to drying air, solve the existing drying device when yeast powder is dried, needs first part of moist yeast powder is put into roller and is dried, after the yeast powder that is put in is dried and taken out, can be put in yeast powder again, which leads to the discontinuity of yeast powder drying, cannot adapt to assembly line type yeast powder production, cause the inconvenience in use, reduce the problem of drying device use effect, reach the effect of continuous circulation drying.

Description

Technical Field

[0001] This invention relates to the field of yeast powder drying equipment technology, specifically to a circulating drying device and drying method for yeast powder production. Background Technology

[0002] Yeast powder is yeast that has not been decomposed, but the nutrients in yeast extract have been decomposed, resulting in higher absorption and utilization speed and efficiency by microorganisms and less fermentation residue. Bio-fermentation research mainly focuses on yeast extract and yeast extract paste, while yeast powder is widely used in traditional fermentation industries such as antibiotics.

[0003] Drying equipment, also known as dryers or dryers, is equipment used for drying operations. It uses heating to vaporize and release the moisture (generally water or other volatile liquid components) in materials to obtain solid materials with a specified moisture content. Yeast powder also needs to be dried by a drying device after production.

[0004] For example, a drying device for producing yeast powder, disclosed in CN211977447U, mainly includes structures such as a drum, a rotating rod, and a support block, which allows the yeast powder to continuously tumble inside the drum, thereby ensuring uniform heating of the yeast powder inside the drum. This improves the drying effect of the yeast powder and solves the problem of uneven heating of yeast powder in the drying device, resulting in a small portion of the yeast powder still containing a large amount of moisture after drying, leading to poor drying effect.

[0005] Based on the search of patent numbers, and combined with the shortcomings of existing technologies, the following findings were made;

[0006] Existing drying equipment requires a portion of the damp yeast powder to be fed into a drum for drying before it can be re-added. This results in discontinuous drying processes, making it unsuitable for automated yeast powder production lines, causing inconvenience and reducing the effectiveness of the drying equipment. Summary of the Invention

[0007] To address the problems mentioned in the background art, the present invention aims to provide a circulating drying device for yeast powder production, which has the advantage of continuous circulating drying. This solves the problem that existing drying devices require a portion of the damp yeast powder to be fed into the drum for drying before it can be dried and removed, which results in discontinuous drying and makes it unsuitable for assembly line yeast powder production. This causes inconvenience in use and reduces the effectiveness of the drying device.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a circulating drying device for yeast powder production, comprising a continuous circulating dryer, a feed pipe, and a control panel. One end of the feed pipe is connected to the left side of the top of the continuous circulating dryer. The control panel is located on the front of the continuous circulating dryer. A circulating mechanism is provided on the left side of the left side of the continuous circulating dryer. A quantitative feeding mechanism is connected to the top of the feed pipe. A heat preservation and heating mechanism is fixedly connected inside the continuous circulating dryer. A collection and extraction mechanism is provided on the right side of the continuous circulating dryer. A multi-layer filtration mechanism is fixedly connected to the top of the continuous circulating dryer. The control panel is electrically connected to the circulating mechanism, the quantitative feeding mechanism, the heat preservation and heating mechanism, the collection and extraction mechanism, and the multi-layer filtration mechanism via wires.

[0009] In a preferred embodiment of the present invention, the circulating mechanism includes a connecting groove, a fan is fixedly connected to the left side of the connecting groove, a connecting pipe is connected to the output end of the fan, a drying pipe is connected to the other end of the connecting pipe, one end of the drying pipe is connected to one end of the feed pipe, the drying pipe is threaded in the continuous circulating drying, a conveying pipe is connected to the other end of the drying pipe, and a return air pipe is connected to the suction end of the fan.

[0010] In a preferred embodiment of the present invention, the quantitative feeding mechanism includes a hopper, a motor is installed inside the hopper, a reducer is fixedly connected to the output end of the motor, a feeding ring is fixedly connected to the bottom of the reducer, a feeding groove is provided on the outer side of the feeding ring, a plurality of feeding grooves are provided and the plurality of feeding grooves are arranged at equal intervals, a support ring is provided at the bottom of the feeding ring, the outer side of the support ring is fixedly connected to the inside of the feed pipe, and a connecting groove is provided at the top of the support ring.

[0011] In a preferred embodiment of the present invention, the heat preservation and heating mechanism includes a heating ring, the drying tube is located inside the heating ring, a mounting column is fixedly connected to the right side of the continuous circulating dryer, a heating wire is wound around the surface of the mounting column, the drying tube is located outside the heating wire, a heat preservation plate is fixedly connected to the outside of the continuous circulating dryer, a vacuum insulation plate is fixedly connected to the outside of the heat preservation plate, a protective plate is fixedly connected to the outside of the vacuum insulation plate, and the back of the control panel is fixedly connected to the front of the protective plate.

[0012] In a preferred embodiment of the present invention, the collection and extraction mechanism includes a rotary separator, wherein a plurality of rotary separators are provided and are arranged at equal intervals. A first one-way valve is connected to the back of the rotary separator, and a solenoid valve is connected to the other end of the first one-way valve. The other end of the solenoid valve is connected to one side of the surface of the delivery pipe. A limit plate is provided at the bottom of the rotary separator, and a limit groove is formed on the front of the limit plate. A collection box is movably connected inside the limit groove, and the bottom of the rotary separator is connected to the top of the limit groove.

[0013] In a preferred embodiment of the present invention, the multi-layer filtration mechanism includes a filter box, a collection pipe connected to the top of the rotary separator, a central pipe connected to the other end of the collection pipe, a connecting pipe connected to one end of the central pipe, an electric air valve connected to the back of the filter box, the back of the electric air valve connected to the other end of the surface of the connecting pipe, a second one-way valve connected to the front of the filter box, a heat insulation pipe connected to the front of the second one-way valve, and the other end of the heat insulation pipe connected to the other end of the return air pipe.

[0014] As a preferred embodiment of the present invention, an observation window is installed on the front of the collection box, an exhaust valve is connected to the other end of the drying tube, a temperature sensor is fixedly connected to the other end of the inner wall of the drying tube, a humidity sensor is fixedly connected to the inside of the collection tube, and a display is fixedly connected to the front of the continuous circulating dryer. The display is electrically connected to the humidity sensor and the temperature sensor through wires.

[0015] As a preferred embodiment of the present invention, a protective box is fixedly connected to the outside of the motor, a connecting rod is fixedly connected to the outside of the protective box, the outside of the connecting rod is fixedly connected to the outside of the inner wall of the hopper, and a vibration motor is fixedly connected to one side of the hopper.

[0016] As a preferred embodiment of the present invention, a pusher plate is fixedly connected to the top of the feeding ring, and a plurality of pusher plates are provided, which are arranged in a ring at equal intervals. A partition plate is fixedly connected to the outer side of the pusher plate, and an inclined plate is fixedly connected to the outer side of the partition plate.

[0017] A drying method for a circulating drying device for yeast powder production, characterized in that: the drying method includes:

[0018] Start the connecting circulation mechanism, the heat preservation and heating mechanism, the quantitative feeding mechanism, the collection and removal mechanism, and the multi-layer filtration mechanism;

[0019] The quantitative feeding mechanism centrally stores materials and, after starting, delivers materials into the feed pipe in batches at regular intervals for quantitative feeding.

[0020] The connecting circulation mechanism starts the conveying air force to pneumatically convey the material falling in the feeding pipe;

[0021] The heat preservation and heating mechanism is activated to heat and preserve the airflow and materials conveyed by the connecting circulation mechanism, so that the materials are quickly heated and dried during the conveying process;

[0022] The collection and extraction mechanism separates the dried material from the conveying airflow, and facilitates the collection and storage of the material.

[0023] The multi-layer filtration mechanism initiates the circulation filtration of the separated airflow and then delivers the filtered airflow to the connecting circulation mechanism for continuous circulation.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. This invention achieves continuous and cyclic drying by setting up a quantitative feeding mechanism and a heat preservation and heating mechanism in conjunction with a circulating mechanism to quantitatively convey, heat, and dry the material. Then, a collection and removal mechanism separates the dried material from the conveying air and stores it. Finally, a multi-layer filtration mechanism filters the drying air before circulating it. This solves the problem that existing drying devices require a portion of the damp yeast powder to be put into the drum for drying. The yeast powder must be dried and removed before new yeast powder can be added. This results in discontinuous yeast powder drying, which cannot be adapted to assembly line yeast powder production, causing inconvenience in use and reducing the effectiveness of the drying device.

[0026] 2. This invention, by setting up a connecting circulation mechanism, allows the fan to be started during use, drawing in air from the return air duct at the fan's intake end. The air is then delivered to the interior of the connecting pipe through the output end. After passing through the connecting pipe, the air enters the interior of the drying tube, moving the material that has fallen from the feed pipe into the drying tube. This allows the material to be rapidly conveyed and moved within the drying tube. After being heated and dried in the drying tube, the material enters the conveying pipe. The return air duct can circulate the filtered hot air back to the fan's intake end, facilitating a stable output airflow from the fan and saving some heating energy.

[0027] 3. By setting up a quantitative feeding mechanism, the present invention can concentrate the material into the feed pipe through the centralized hopper during use. Then, by starting the motor, the output end of the motor drives the reducer to rotate. The rotation of the reducer drives the feeding ring to rotate. Under the influence of gravity, the material can fall through the feeding chute into the connecting groove of the support ring for quantitative feeding. This can avoid the situation where too much material falls at the same time, which would prevent the air force of the blower from being unable to move the material. At the same time, the quantitative feeding of multiple batches of material also helps to quickly heat and dry the material. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 2 This is a schematic diagram of the three-dimensional left-side view structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the three-dimensional split cross-sectional structure of the present invention;

[0031] Figure 4 This is a three-dimensional structural diagram of the parts collection and retrieval mechanism of the present invention;

[0032] Figure 5 This is a three-dimensional structural diagram of the multi-layer filtration mechanism of the component of the present invention;

[0033] Figure 6 This is a three-dimensional structural diagram of the heat preservation and heating mechanism for the parts of the present invention;

[0034] Figure 7 This is a three-dimensional structural diagram of the component connection and circulation mechanism of the present invention;

[0035] Figure 8 This is a three-dimensional structural diagram of the part quantitative feeding mechanism of the present invention;

[0036] Figure 9 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0037] Figure 10 For the present invention Figure 6 Enlarged 3D structural diagram at point B.

[0038] In the diagram: 1. Continuous circulating drying; 2. Feed pipe; 3. Control panel; 4. Connecting circulation mechanism; 41. Connecting groove; 42. Fan; 43. Connecting pipe; 44. Drying pipe; 45. Conveying pipe; 46. Return air pipe; 5. Quantitative feeding mechanism; 51. Concentrated hopper; 52. Motor; 53. Reducer; 54. Feeding ring; 55. Feeding trough; 56. Support ring; 57. Connecting groove; 6. Insulation and heating mechanism; 61. Heating ring; 62. Mounting column; 63. Heating wire; 64. Insulation board; 65. Vacuum insulation board; 66. Protective plate; 7. Collection and removal. Mechanism; 71. Rotary separator; 72. First check valve; 73. Solenoid valve; 74. Limiting plate; 75. Limiting groove; 76. Collection box; 8. Multi-layer filtration mechanism; 81. Filter box; 82. Collection pipe; 83. Central pipe; 84. Connecting pipe; 85. Electric air valve; 86. Second check valve; 87. Insulation pipe; 9. Observation window; 10. Exhaust valve; 11. Temperature sensor; 12. Humidity sensor; 13. Display; 14. Protective box; 15. Connecting rod; 16. Vibration motor; 17. Pusher plate; 18. Separator plate; 19. Inclined plate. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] like Figures 1 to 10 As shown, the present invention provides a circulating drying device for yeast powder production, including a continuous circulating dryer 1, a feed pipe 2, and a control panel 3. One end of the feed pipe 2 is connected to the left side of the top of the continuous circulating dryer 1. The control panel 3 is located on the front of the continuous circulating dryer 1. A circulating mechanism 4 is provided on the left side of the left side of the continuous circulating dryer 1. A quantitative feeding mechanism 5 is connected to the top of the feed pipe 2. A heat preservation and heating mechanism 6 is fixedly connected inside the continuous circulating dryer 1. A collection and removal mechanism 7 is provided on the right side of the continuous circulating dryer 1. A multi-layer filtration mechanism 8 is fixedly connected to the top of the continuous circulating dryer 1. The control panel 3 is electrically connected to the circulating mechanism 4, the quantitative feeding mechanism 5, the heat preservation and heating mechanism 6, the collection and removal mechanism 7, and the multi-layer filtration mechanism 8 through wires.

[0041] refer to Figure 7 The circulating mechanism 4 includes a connecting groove 41. A fan 42 is fixedly connected to the left side of the connecting groove 41. The output end of the fan 42 is connected to a connecting pipe 43. The other end of the connecting pipe 43 is connected to a drying pipe 44. One end of the drying pipe 44 is connected to one end of the feed pipe 2. The drying pipe 44 is threaded and installed in the continuous circulating dryer 1. The other end of the drying pipe 44 is connected to a conveying pipe 45. The suction end of the fan 42 is connected to a return air pipe 46.

[0042] As a technical optimization of the present invention, by setting up a connecting circulation mechanism 4, the fan 42 can be started during use, so that the fan 42 intake end draws in the air from the return air pipe 46, and then the air is delivered to the inside of the connecting pipe 43 through the output end. After passing through the connecting pipe 43, the air can enter the inside of the drying pipe 44, and drive the material falling from the feed pipe 2 into the drying pipe 44 to move, so that the material is quickly conveyed and moved in the drying pipe 44. After being heated and dried in the drying pipe 44, the material enters the conveying pipe 45. The return air pipe 46 can circulate and deliver the filtered hot air to the intake end of the fan 42, which facilitates the stable output of the fan 42 and also saves a certain amount of heating energy.

[0043] refer to Figure 8The quantitative feeding mechanism 5 includes a centralized hopper 51, a motor 52 is installed inside the centralized hopper 51, a reducer 53 is fixedly connected to the output end of the motor 52, a feeding ring 54 is fixedly connected to the bottom of the reducer 53, a feeding groove 55 is opened on the outer side of the feeding ring 54, a number of feeding grooves 55 are provided, and the number of feeding grooves 55 are arranged at equal distances, a support ring 56 is provided at the bottom of the feeding ring 54, the outer side of the support ring 56 is fixedly connected to the inside of the feed pipe 2, and a connecting groove 57 is opened at the top of the support ring 56.

[0044] As a technical optimization of the present invention, by setting up a quantitative feeding mechanism 5, the material can be concentratedly transported into the feed pipe 2 by the centralized hopper 51 during use. Then, by starting the motor 52, the output end of the motor 52 drives the reducer 53 to rotate. The rotation of the reducer 53 can drive the feeding ring 54 to rotate. Under the influence of gravity, the material can fall through the feeding trough 55 into the supporting ring 56 and the connecting groove 57 for quantitative feeding. This can avoid the situation where too much material falls at the same time, causing the air force delivered by the fan 42 to be unable to move the material. At the same time, the quantitative feeding of multiple batches of material also helps the material to be heated and dried quickly.

[0045] refer to Figure 6 The heat preservation and heating mechanism 6 includes a heating ring 61, a drying tube 44 located inside the heating ring 61, a mounting post 62 fixedly connected to the right side inside the continuous circulation drying 1, a heating wire 63 wound around the surface of the mounting post 62, the drying tube 44 located outside the heating wire 63, a heat preservation plate 64 fixedly connected to the outside of the continuous circulation drying 1, a vacuum insulation plate 65 fixedly connected to the outside of the heat preservation plate 64, a protective plate 66 fixedly connected to the outside of the vacuum insulation plate 65, and the back of the control panel 3 fixedly connected to the front of the protective plate 66.

[0046] As a technical optimization of the present invention, by setting up a heat preservation and heating mechanism 6, the heating ring 61 can be activated during use, so that the heating ring 61 outputs heat to the outside of the drying tube 44. At the same time, the heating wire 63 can be activated, so that the heating wire 63 heats the inside of the drying tube 44, so that the temperature inside the drying tube 44 rises rapidly. After the temperature inside the drying tube 44 is preheated, the user can start the fan 42, so that the fan 42 delivers airflow to transfer heat inside the drying tube 44, and at the same time, the material can be heated and dried quickly. Meanwhile, the heat preservation plate 64 can keep the outside of the continuous circulation drying 1 warm, reducing the loss of heat from the continuous circulation drying 1. At the same time, the vacuum insulation plate 65 can vacuum insulate the outside of the heat preservation plate 64, so that the outside of the heat preservation plate 64 is isolated from the external temperature, reducing the loss of temperature inside the continuous circulation drying 1. The protective plate 66 can protect the outside of the vacuum insulation plate 65, enhancing the safety of the vacuum insulation plate 65 and preventing the vacuum insulation plate 65 from being damaged and unable to provide vacuum insulation.

[0047] refer to Figure 4 The collection and extraction mechanism 7 includes a rotary separator 71, and several rotary separators 71 are arranged at equal intervals. A first one-way valve 72 is connected to the back of the rotary separator 71, and a solenoid valve 73 is connected to the other end of the first one-way valve 72. The other end of the solenoid valve 73 is connected to one side of the surface of the conveying pipe 45. A limit plate 74 is provided at the bottom of the rotary separator 71, and a limit groove 75 is opened on the front of the limit plate 74. A collection box 76 is movably connected inside the limit groove 75. The bottom of the rotary separator 71 is connected to the top of the limit groove 75.

[0048] As a technical optimization of the present invention, by setting up a collection and extraction mechanism 7, after the material is heated and dried in the drying tube 44, it enters the conveying tube 45. Then, by activating the solenoid valve 73, the solenoid valve 73 opens the first one-way valve 72 and connects it to the conveying tube 45. Under the conveying force of the wind, the material enters the interior of the rotary separator 71 through the solenoid valve 73 and the first one-way valve 72. After the rotary separator 71 rotates and separates the material, the material can enter the interior of the limiting groove 75. The collection box 76 can collect the material inside the limiting groove 75. The limiting plate 74 can limit the collection box 76 through the limiting groove 75, so that the collection box 76 can stably collect the material.

[0049] refer to Figure 5 The multi-layer filtration mechanism 8 includes a filter box 81, a collection pipe 82 connected to the top of the rotary separator 71, a central pipe 83 connected to the other end of the collection pipe 82, a connecting pipe 84 connected to one end of the central pipe 83, an electric air valve 85 connected to the back of the filter box 81, the back of the electric air valve 85 connected to the other end of the surface of the connecting pipe 84, a second one-way valve 86 connected to the front of the filter box 81, a heat insulation pipe 87 connected to the front of the second one-way valve 86, and the other end of the heat insulation pipe 87 connected to the other end of the return air pipe 46.

[0050] As a technical optimization of the present invention, by setting up a multi-layer filtration mechanism 8, after the rotary separator 71 separates the hot air from the material during use, the hot air can enter the inside of the collection pipe 82 through the rotary separator 71, then enter the inside of the central pipe 83 through the collection pipe 82, and finally enter the inside of the connecting pipe 84 through the central pipe 83. At this time, the user can open the electric air valve 85 to connect the connecting pipe 84 and the filter box 81, so that the gas can enter the filter box 81 for filtration. The filtered gas can enter the inside of the heat insulation pipe through the single-way pipe, and then enter the inside of the return air pipe 46 through the heat insulation pipe 87, achieving the effect of circulating drying. At the same time, when the user needs to maintain and clean the filter box 81, he / she can close one of the electric air valves 85, so that the hot air no longer enters the filter box 81 through the closed electric air valve 85. The user can edit the maintenance and cleaning of the filter box 81 with the closed electric air valve 85. At the same time, since the filter box 81 is set with several groups, the maintenance of the filter box 81 will not affect the normal filtration of hot air.

[0051] refer to Figure 3 The front of the collection box 76 is equipped with an observation window 9, the other end of the drying tube 44 is connected to an exhaust valve 10, the other end of the inner wall of the drying tube 44 is fixedly connected to a temperature sensor 11, the inside of the central tube 83 is fixedly connected to a humidity sensor 12, the front of the continuous circulation drying 1 is fixedly connected to a display 13, and the display 13 is electrically connected to the humidity sensor 12 and the temperature sensor 11 through wires.

[0052] As a technical optimization of the present invention, by setting up an observation window 9, an exhaust valve 10, a temperature sensor 11, a humidity sensor 12, and a display 13, the observation window 9 allows the user to easily observe the inside of the collection box 76 during use, and facilitates the quick and easy removal and storage of materials after the collection box is full. The exhaust valve 10 allows the user to expel the gas in the conveying pipe 45. The temperature sensor 11 can detect the temperature in the drying pipe 44. After detecting the temperature, the temperature sensor 11 can send a signal to the display 13. The display 13 receives the signal, processes it, and displays the temperature, allowing the user to know the preheating level of the drying pipe 44 in a timely manner. At the same time, the humidity sensor 12 can detect the humidity in the pipe 83, allowing the user to know the humidity in the gas after the material is heated and dried. The display 13 can display the humidity data detected by the humidity sensor 12.

[0053] refer to Figure 8 A protective box 14 is fixedly connected to the outside of the motor 52, and a connecting rod 15 is fixedly connected to the outside of the protective box 14. The outside of the connecting rod 15 is fixedly connected to the outside of the inner wall of the hopper 51, and a vibration motor 16 is fixedly connected to one side of the hopper 51.

[0054] As a technical optimization of the present invention, by setting up a protective box 14, a connecting rod 15 and a vibration motor 16, the protective box 14 can protect the outside of the motor 52 during use, thereby enhancing the safety of the motor 52. The connecting rod 15 can fix the protective box 14 inside the hopper 51 during use, which facilitates the stable output of the motor 52. The vibration motor 16 can be started during use, and the output of the vibration motor 16 can stably discharge and move the material in the hopper and the feed pipe 2, avoiding the accumulation of material and the inconvenience of rapid discharge.

[0055] refer to Figure 8 A pusher plate 17 is fixedly connected to the top of the feeding ring 54. Several pusher plates 17 are provided, and the several pusher plates 17 are arranged in a ring at equal intervals. A partition plate 18 is fixedly connected to the outside of the pusher plate 17, and an inclined plate 19 is fixedly connected to the outside of the partition plate 18.

[0056] As a technical optimization of the present invention, by setting a pusher plate 17, a separator plate 18 and an inclined plate 19, the feeding ring 54 can drive the pusher plate to rotate when it rotates. The rotation of the pusher plate can push the material. At the same time, the separator plate 18 can separate the material, so that the material is quantitatively separated and fed. Meanwhile, the inclined plate 19 can facilitate the separation and feeding of the separator plate 18 during use, thereby enhancing the separation stability of the material.

[0057] The working principle and usage process of this invention are as follows: During use, the centralized hopper 51 can centrally transport materials into the feed pipe 2. Then, by starting the motor 52, the output of the motor 52 drives the reducer 53 to rotate. The rotation of the reducer 53 drives the feeding ring 54 to rotate. Under the influence of gravity, the material, through the feeding trough 55, falls onto the support ring 56 and into the connecting groove 57 for quantitative feeding. This avoids a situation where too much material falls at the same time, preventing the airflow from the fan 42 from being insufficient to move the material. Simultaneously, the quantitative feeding of multiple batches of material also facilitates rapid heating and drying. Then, by starting the heating ring 61, the output of the heating ring 61 heats the outside of the drying tube 44, and the heating wire can be activated. 63. Heating wire 63 heats the inside of drying tube 44, causing the temperature inside drying tube 44 to rise rapidly. During preheating, temperature sensor 11 can detect the temperature inside drying tube 44. Once the temperature reaches a suitable range, fan 42 is activated to draw in air from return air pipe 46 at its suction end, and then the air is delivered to the inside of connecting pipe 43 through its output end. The air enters the inside of drying tube 44 through connecting pipe 43, moving the material that has fallen from feed pipe 2 into drying tube 44. This allows the material to move rapidly within drying tube 44. After being heated and dried in drying tube 44, the material enters conveying pipe 45. At this point, solenoid valve 73 can be activated to open the first... One-way valve 72 is connected to conveying pipe 45. Material, conveyed by air, enters the rotary separator 71 through solenoid valve 73 and the first one-way valve 72. The rotary separator 71 rotates and separates the material, allowing it to enter the limiting groove 75. Collection box 76 collects the material within the limiting groove 75. Limiting plate 74 can limit collection box 76 through the limiting groove 75, ensuring stable and concentrated collection of material, achieving continuous circulating drying. Simultaneously, hot air separated from the rotary separator 71 enters the collection pipe 82, then the central pipe 83, and finally the connecting pipe 84. The user can open the electric air valve 85, connecting the electric air valve 85 to the connecting pipe 84 and the filter box 81, allowing gas to enter the filter box 81 for filtration. The filtered gas then enters the interior of the heat insulation pipe through the one-way pipe, and then enters the interior of the return air pipe 46 through the heat insulation pipe 87, achieving a circulating drying effect. When the user needs to maintain or clean the filter box 81, they can close one of the electric air valves 85, preventing hot air from entering the filter box 81 through the closed electric air valve 85. The user can edit the maintenance and cleaning settings for the closed electric air valve of the filter box 81. Since the filter box 81 is configured with several groups, maintenance of the filter box 81 will not affect the normal filtration of hot air.The return air duct 46 circulates the filtered hot air to the intake end of the fan 42, facilitating stable airflow output from the fan 42 while saving heating energy. This allows the airflow from the fan 42 to transfer heat within the drying tube 44, enabling rapid heating and drying of the material. Simultaneously, the insulation plate 64 insulates the outside of the continuous circulation dryer 1, reducing heat loss. The vacuum insulation plate 65 provides vacuum insulation to the outside of the insulation plate 64, isolating it from external temperatures and further minimizing heat loss within the continuous circulation dryer 1. The protective plate 66 protects the outside of the vacuum insulation plate 65, enhancing its safety and preventing damage that could compromise vacuum insulation, thus improving the overall effectiveness of the drying device.

[0058] In summary, this circulating drying device for yeast powder production uses a quantitative feeding mechanism 5 and a heat preservation and heating mechanism 6 in conjunction with a circulating mechanism 4 to quantitatively convey, heat, and dry the material. The dried material is then separated from the conveying airflow and stored via a collection and removal mechanism 7. Finally, the drying airflow is filtered through a multi-layer filtration mechanism 8 before being recirculated. This solves the problem of existing drying devices requiring a portion of damp yeast powder to be added to the drum for drying before new yeast powder can be added, resulting in discontinuous drying processes that are unsuitable for assembly line yeast powder production, causing inconvenience and reducing the effectiveness of the drying device.

[0059] Based on the aforementioned circulating drying device for yeast powder production, this invention also proposes a drying method for yeast powder. Exemplarily, the drying method includes:

[0060] Start the connecting circulation mechanism, the heat preservation and heating mechanism, the quantitative feeding mechanism, the collection and removal mechanism, and the multi-layer filtration mechanism;

[0061] The quantitative feeding mechanism centrally stores materials and, after starting, delivers materials into the feed pipe in batches at regular intervals for quantitative feeding.

[0062] The connecting circulation mechanism starts the conveying air force to pneumatically convey the material falling in the feeding pipe;

[0063] The heat preservation and heating mechanism is activated to heat and preserve the airflow and materials conveyed by the connecting circulation mechanism, so that the materials are quickly heated and dried during the conveying process;

[0064] The collection and extraction mechanism separates the dried material from the conveying airflow, and facilitates the collection and storage of the material.

[0065] The multi-layer filtration mechanism initiates the circulation filtration of the separated airflow and then delivers the filtered airflow to the connecting circulation mechanism for continuous circulation.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating drying device for yeast powder production, comprising a continuous circulating dryer, a feed pipe, and a control panel. A connecting circulation mechanism is provided on the left side of the continuous circulating dryer. A quantitative feeding mechanism is connected to the top of the feed pipe. A heat preservation and heating mechanism is fixedly connected inside the continuous circulating dryer. A collection and removal mechanism is provided on the right side of the continuous circulating dryer. A multi-layer filtration mechanism is fixedly connected to the top of the continuous circulating dryer. The control panel is electrically connected to the connecting circulation mechanism, the quantitative feeding mechanism, the heat preservation and heating mechanism, the collection and removal mechanism, and the multi-layer filtration mechanism via wires. The connecting circulation mechanism includes a connecting groove. A fan is fixedly connected to the left side of the connecting groove. A connecting pipe is connected to the output end of the fan. A drying pipe is connected to the other end of the connecting pipe. One end of the drying pipe is connected to one end of the feed pipe. The drying pipe is threaded inside the continuous circulating dryer. A conveying pipe is connected to the other end of the drying pipe. A return air pipe is connected to the suction end of the fan. The heat preservation and heating mechanism includes a heating ring. The drying pipe is located inside the heating ring. A mounting column is fixedly connected to the right side of the continuous circulating dryer. A heating wire is wound around the surface of the mounting column. The drying tube is located outside the heating wire. A heat insulation plate is fixedly connected to the outside of the continuously circulating drying tube. A vacuum insulation plate is fixedly connected to the outside of the heat insulation plate. A protective plate is fixedly connected to the outside of the vacuum insulation plate. The quantitative feeding mechanism includes a hopper. A motor is installed inside the hopper. A reducer is fixedly connected to the output end of the motor. A feeding ring is fixedly connected to the bottom of the reducer. A feeding groove is opened on the outside of the feeding ring. Several feeding grooves are provided and are arranged at equal intervals. A support ring is provided at the bottom of the feeding ring. The outside of the support ring is fixedly connected to the inside of the feed pipe. A connecting groove is opened at the top of the support ring. The collection and extraction mechanism includes a rotary separator. Several rotary separators are provided and are arranged at equal intervals. A first one-way valve is connected to the back of the rotary separator. A solenoid valve is connected to the other end of the first one-way valve. The other end of the solenoid valve is connected to one side of the surface of the conveying pipe. A limit plate is provided at the bottom of the rotary separator. A limit groove is opened on the front of the limit plate. A collection box is movably connected inside the limit groove. The bottom of the rotary separator is connected to the top of the limit groove.

2. A circulating drying device for yeast powder production according to claim 1, characterized in that: The multi-layer filtration mechanism includes a filter box, a collection pipe connected to the top of the rotary separator, a central pipe connected to the other end of the collection pipe, a connecting pipe connected to one end of the central pipe, an electric air valve connected to the back of the filter box, the back of the electric air valve connected to the other end of the surface of the connecting pipe, a second one-way valve connected to the front of the filter box, a heat insulation pipe connected to the front of the second one-way valve, and the other end of the heat insulation pipe connected to the other end of the return air pipe.

3. A circulating drying device for yeast powder production according to claim 2, characterized in that: An observation window is installed on the front of the collection box, an exhaust valve is connected to the other end of the drying tube, a temperature sensor is fixedly connected to the other end of the inner wall of the drying tube, a humidity sensor is fixedly connected to the inside of the collection tube, and a display is fixedly connected to the front of the continuous circulation drying tube. The display is electrically connected to the humidity sensor and the temperature sensor through wires.

4. A circulating drying device for yeast powder production according to claim 1, characterized in that: A protective box is fixedly connected to the outside of the motor, and a connecting rod is fixedly connected to the outside of the protective box. The outside of the connecting rod is fixedly connected to the outside of the inner wall of the hopper. A vibration motor is fixedly connected to one side of the hopper.

5. A circulating drying device for yeast powder production according to claim 1, characterized in that: A pusher plate is fixedly connected to the top of the feeding ring. Several pusher plates are arranged in a ring at equal intervals. A partition plate is fixedly connected to the outside of the pusher plate, and an inclined plate is fixedly connected to the outside of the partition plate.

6. A drying method for a circulating drying device for yeast powder production according to any one of claims 1-5, characterized in that: Drying methods include: Start the connecting circulation mechanism, the heat preservation and heating mechanism, the quantitative feeding mechanism, the collection and removal mechanism, and the multi-layer filtration mechanism; The quantitative feeding mechanism centrally stores materials and, after starting, delivers materials into the feed pipe in batches at regular intervals for quantitative feeding. The connecting circulation mechanism starts the conveying air force to pneumatically convey the material falling in the feeding pipe; The heat preservation and heating mechanism is activated to heat and preserve the airflow and materials conveyed by the connecting circulation mechanism, so that the materials are quickly heated and dried during the conveying process; The collection and extraction mechanism separates the dried material from the conveying airflow, and facilitates the collection and storage of the material. The multi-layer filtration mechanism initiates the circulation filtration of the separated airflow and then delivers the filtered airflow to the connecting circulation mechanism for continuous circulation.

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