Milk powder drying device and drying process thereof

Abstract

The invention discloses a milk powder drying device and a drying process thereof, and relates to the technical field of milk powder production.The milk powder drying device comprises a base, a combustion furnace is fixedly installed at the top of the base, a heat exchanger is fixedly installed at the top of the base, and a gas conveying pipe fixedly penetrates through the top of the heat exchanger; an air filter cylinder is fixedly installed at the end, away from the heat exchanger, of the air conveying pipe, a fan is fixedly installed on the surface of the air filter cylinder, a drying cylinder is fixedly installed at the top of the base, a cyclone separation cylinder fixedly penetrates through the surface of the drying cylinder, and a storage barrel is fixedly installed at the top of the base. The milk powder drying device can ensure that milk powder is uniformly dried in the drying process, and avoids product quality difference caused by non-uniform drying.

Description

Technical Field

[0001] The present invention relates to the technical field of milk powder production, and specifically relates to a milk powder drying device and a drying process thereof. Background Art

[0002] Milk powder drying is a key step in milk powder production, mainly by removing the moisture in liquid milk to obtain solid powder.

[0003] The patent with the patent announcement number CN207820977U relates to a milk powder drying device and a drying process thereof, including a drying tower, a centrifugal fan, a heater, a cyclone separator, a feed pipe, a nozzle seat and a microwave generator. The feed pipe passes through the middle of the drying tower and enters the inside of the drying tower. One end of the feed pipe is connected to a raw material tank, and the other end is provided with a nozzle seat. A number of upwardly arranged nozzles are connected to the nozzle seat. The microwave generator is arranged on the side of the nozzle seat. The centrifugal fan is connected to the drying tower. The cyclone separator and the heater are sequentially connected to the drying tower through pipelines. The milk powder drying device and the drying process described in this patent have a simple structure, can thoroughly dry the milk powder, and will not agglomerate and stick to the inner wall of the drying tower, which not only improves the quality of the milk powder, but also improves the drying efficiency.

[0004] In the above patent, the cyclone separator and the heater are sequentially connected to the drying tower through pipelines, so that the milk powder can be thoroughly dried and will not agglomerate and stick to the inner wall of the drying tower. However, before the milk source is processed, there may be precipitation inside, which may lead to the precipitate affecting the uniformity and consistency of milk powder drying. Therefore, a milk powder drying device with a stirring, metering and self-cleaning function is designed. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a milk powder drying device and a drying process thereof, which solve the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a milk powder drying device and a drying process thereof, comprising a base, a combustion furnace is fixedly installed on the top of the base, a heat exchanger is fixedly installed on the top of the base, an air supply pipe is fixedly penetrated through the top of the heat exchanger, an air filter cartridge is fixedly installed on the end of the air supply pipe away from the heat exchanger, a fan is fixedly installed on the surface of the air filter cartridge, a drying cartridge is fixedly installed on the top of the base, a cyclone separation cartridge is fixedly penetrated through the surface of the drying cartridge, a storage barrel is fixedly installed on the top of the base, an atomizing device for centrifugal atomization of milk source is arranged on the surface of the drying cartridge, the atomizing device comprises a motor, and the The motor is fixedly mounted on the surface of the drying cylinder, and a rotating shaft is rotatably penetrated through the inner wall of the drying cylinder, a milk pipe is fixedly penetrated through the surface of the drying cylinder, a feeding cylinder is fixedly penetrated through the top of the milk pipe, a rotating rod is rotatably penetrated through the surface of the feeding cylinder, a stirring plate is fixedly mounted on the circumferential surface of the rotating rod, a limit disk is slidably mounted on the circumferential surface of the rotating rod, a centrifugal cylinder is fixedly mounted on the circumferential surface of the rotating shaft, and a breaking plate is rotatably mounted on the surface of the centrifugal cylinder to avoid the risk of sparks and explosions during the drying process, reduce the potential danger of dust explosions, ensure production safety, and help the airflow to effectively evaporate moisture without overheating the milk powder particles and causing them to spontaneously combust.

[0007] According to the above technical scheme, the combustion furnace is connected with the heat exchanger, the air filter cylinder is fixedly passed through the top of the drying cylinder, the cyclone separation cylinder is connected with the storage barrel, the motor and the rotating shaft are connected with a transmission belt, the rotating shaft is fixedly connected with the breaking plate, the breaking plate is slidably connected with the inner wall of the drying cylinder, and a brush plate is provided on the surface of the breaking plate to stir the milk source inside the feed cylinder to ensure the fluidity and uniformity of the milk, avoid the deposition or precipitation of solid particles, maintain a good raw material state, and improve the product quality and taste of the milk powder.

[0008] According to the above technical solution, a transmission belt is provided between the rotating rod and the rotating shaft, the rotating rod is connected to the limit plate by a threaded connection, the stirring plate is slidably connected to the inner wall of the feed cylinder, the milk delivery tube is fixedly penetrated through the surface of the centrifugal cylinder, and the circumferential surface of the centrifugal cylinder is provided with fine filter holes to prevent the surface of the centrifugal cylinder from being blocked by milk scaling or coked milk particles, thereby affecting the working efficiency of the centrifugal cylinder. At the same time, the breaking plate rotates to clean the coked milk on the inner wall of the drying cylinder, thereby avoiding the accumulation of milk powder or coking on the inner wall of the drying cylinder, affecting the heat transfer and the flow of airflow, and reducing the drying efficiency. Regular cleaning ensures the efficient operation of the equipment and extends the life of the equipment. It also helps to reduce pollution and ensure product quality.

[0009] According to the above technical solution, a cleaning device for cleaning coked milk powder and scale on the inner wall of the drying cylinder is arranged on the circumferential surface of the rotating shaft. The cleaning device includes a fixing ring which is slidably mounted on the circumferential surface of the rotating shaft. A stirring ring is fixedly mounted on the circumference of the fixing ring. A first telescopic rod is fixedly mounted at the bottom of the stirring ring, and a second telescopic rod is fixedly mounted at the top of the stirring ring. A fixing plate is fixedly mounted on the circumferential surface of the second telescopic rod. A cleaning cylinder is rotatably mounted on the surface of the fixing plate. A first turntable is fixedly mounted on the circumferential surface of the cleaning cylinder to disperse the falling milk powder particles, avoid the occurrence of coking, improve the drying efficiency of the milk source, and ensure the uniformity and consistency of the milk powder at the same time.

[0010] According to the above technical solution, the rotating shaft and the fixing ring are connected by threads. The first telescopic rod is slidably connected to the inner wall of the drying cylinder, and the fixing plate is slidably connected to the inner wall of the drying cylinder to clean the inner wall of the drying cylinder, avoid coked milk powder or scale from hindering heat transfer, reduce the drying process efficiency, and may even cause equipment failure and increase maintenance costs. Keeping the drying cylinder clean helps improve the drying efficiency and avoid production stagnation caused by equipment failure.

[0011] According to the above technical solution, brush hairs are arranged on the circumferential surface of the cleaning cylinder. The first turntable is in contact with the inner wall of the drying cylinder to clean the inner wall of the drying cylinder, further improving the cleaning effect. And the scale will affect air flow, making the heat distribution uneven, and then reducing the drying effect. By cleaning, maintaining the good working state of the equipment can ensure uniform drying of the milk powder during the drying process and avoid product quality differences caused by uneven drying.

[0012] According to the above technical solution, a vibrating device for stirring and vibrating the milk powder is arranged on the inner wall of the drying cylinder. The vibrating device includes a drying plate which is rotatably mounted on the inner wall of the drying cylinder. Stirring plates are fixedly mounted on the surface of the drying plate. A first contact ring is fixedly mounted on the inner wall of the drying cylinder. A sieve cylinder is rotatably penetrated through the surface of the drying plate. A second contact ring is fixedly mounted on the circumferential surface of the sieve cylinder. A rotating rod is fixedly mounted at the bottom of the sieve cylinder. A second turntable is fixedly mounted on the circumferential surface of the rotating rod. An inclined cutting block is fixedly mounted at the bottom of the second turntable. A telescopic elastic rod is fixedly mounted at the bottom of the second turntable. A return plate is sleeved on the circumferential surface of the rotating rod. A rotating block is rotatably mounted on the surface of the return plate. A telescopic rotating rod is fixedly mounted on the surface of the drying cylinder to remove peculiar smells and impurity particles in the milk powder particles, remove possible residues of impurities and particles during the drying process, such as incompletely dried milk powder lumps, dust in the air, etc. This can ensure the purity and safety of the milk powder and ensure the fresh smell of the milk powder.

[0013] According to the above technical solution, the dial plate is rotatably connected to the rotating shaft, the free end of the telescopic elastic rod is fixedly connected to the loop plate, the rotating block is fixedly connected to the inclined plate, the telescopic rotating rod is rotatably connected to the inclined plate, a filter plate is arranged on the inner wall of the sieve cylinder, the contact ring II contacts the contact ring I, the dial plate contacts the sieve cylinder, the first telescopic rod is fixedly connected to the drying tray, and the angle of the inclined plate is set as the inclination angle, so as to prevent milk powder particles from being blocked in the feeding pipe between the sieve cylinder and the cyclone separator during transportation, thereby affecting the transportation effect and efficiency, keeping the milk powder flowing properly during transportation, avoiding blockage problems caused by powder accumulation or excessive humidity, preventing powder from getting stuck in the transportation pipeline or equipment, improving the continuity and production efficiency of the equipment, and preventing the milk powder from being affected by local humidity due to accumulation during the whole production process, thereby improving the drying effect and reducing the generation of unqualified products.

[0014] A milk powder drying device and its drying process, using the above-mentioned milk powder drying device, including: Step 1: Air enters the inside of the combustion furnace through the combustion furnace air inlet, and then the combustion furnace is started. The combustion furnace reacts oxygen in the air with high temperature combustion to form carbon dioxide and water vapor. Subsequently, the nitrogen gas after being processed by the combustion furnace enters the inside of the heat exchanger, and the heat exchanger reduces the temperature of the nitrogen gas to an appropriate temperature value; Step 2: Subsequently, the heat exchanger discharges the cooled gas into the inside of the air filter cylinder through the air delivery pipe. At this time, the air filter cylinder filters the gas and discharges it into the drying cylinder through the top by a fan. Before this, the staff starts the motor, the motor rotates to drive the first transmission belt to rotate, the first transmission belt rotates to drive the rotating shaft to rotate, at the same time the rotating shaft rotates to drive the second transmission belt to rotate, the second transmission belt rotates to drive the rotating rod to rotate, and at the same time the rotating rod rotates to drive the stirring plate to rotate; Step 3: The staff pours the milk source into the feeding cylinder. At this time, the stirring plate rotates under the action of the rotating rod to stir the milk source inside the feeding cylinder. At the same time, the rotating rod rotates to drive the limiting plate to move downward to close the inlet of the feeding cylinder leading to the milk delivery pipe. Subsequently, the rotating rod rotates to drive the limiting plate to move upward until it contacts and opens the inlet, realizing the quantitative and timed delivery of the milk source; Step 4: Subsequently, the stirred milk source flows into the inside of the centrifuge cylinder through the milk delivery pipe. At the same time, the rotating shaft rotates to drive the centrifuge cylinder to rotate. The centrifuge cylinder rotates to form mist-like milk powder particles from the milk source inside it under the action of centrifugal force. Subsequently, the milk powder particles contact the hot air at the top of the drying cylinder, and the moisture inside the milk powder particles is evaporated to form dried milk powder particles. At the same time, the centrifuge cylinder rotates to drive the dispersing plate to rotate, and the dispersing plate rotates to clean the circumferential surface of the centrifuge cylinder and the inner wall of the drying cylinder.

[0015] The present invention provides a milk powder drying device and its drying process. It has the following beneficial effects: (1) In this milk powder drying device, the nitrogen gas processed by the combustion furnace enters the interior of the heat exchanger. The heat exchanger reduces the temperature of the nitrogen gas to an appropriate temperature value, avoiding the risk of generating sparks and thus explosion during the drying process, reducing the potential danger of dust explosion, ensuring production safety, and helping the air flow to effectively evaporate moisture. At the same time, it does not overheat the milk powder particles to cause spontaneous combustion. The stirring plate rotates under the action of the rotating rod to stir the milk source inside the feeding cylinder, ensuring the fluidity and uniformity of the milk liquid, avoiding the deposition or precipitation of solid particles, maintaining a good raw material state, and improving the product quality and taste of the milk powder.

[0016] (2) In this milk powder drying device, the rotating rod rotates to drive the limit disk to move upward until it contacts and opens the inlet, realizing the quantitative and timed delivery of the milk source, ensuring that the amount of milk liquid entering the drying chamber each time is the same, helping to control the temperature and time during the drying process, thereby improving efficiency. The centrifugal cylinder rotates to drive the dispersing plate to rotate, and the dispersing plate rotates to clean the circumferential surface of the centrifugal cylinder and the inner wall of the drying cylinder, avoiding the blockage of the surface of the centrifugal cylinder by the milk source scale or coked milk source particles, which in turn affects the working efficiency of the centrifugal cylinder. At the same time, the dispersing plate rotates to clean the coked milk source on the inner wall of the drying cylinder, avoiding the accumulation or coking of milk powder on the inner wall of the drying cylinder, which affects the heat transfer and air flow, reducing the drying efficiency. Regular cleaning ensures the high-efficiency operation of the equipment, extends the equipment life, and also helps to reduce pollution and ensure product quality.

[0017] (3) In this milk powder drying device, the rotating shaft rotates under the action of the motor to drive the fixed ring to rotate, and the fixed ring rotates to drive the stirring ring to rotate to disperse the falling milk powder particles, avoiding the occurrence of coking, improving the drying efficiency of the milk source, and ensuring the uniformity and consistency of the milk powder. At the same time, the stirring ring moves under the action of the fixed ring to clean the inner wall of the drying cylinder, avoiding the obstruction of heat transfer by coked milk powder or scale, which reduces the drying process efficiency and may even cause equipment failure, increasing the maintenance cost. Keeping the drying cylinder clean helps to improve the drying efficiency, thus avoiding production stagnation caused by equipment failure. The first turntable moves and rotates under the action of the drying cylinder, and at the same time, the first turntable rotates to drive the cleaning cylinder to rotate. At this time, the cleaning cylinder rotates to drive the brush bristles to rotate to clean the inner wall of the drying cylinder, further improving the cleaning effect. Moreover, the scale will affect the air flow, making the heat distribution uneven, and thus reducing the drying effect. Through cleaning, maintaining the good working state of the equipment can ensure the uniform drying of the milk powder during the drying process, avoiding product quality differences caused by uneven drying.

[0018] (4) In this milk powder drying device, the drying milk powder particles accumulated inside the drying tray are stirred and agitated by the rotation of the baffle plate. At this time, the drying milk powder particles enter the inside of the sieve cylinder under the action of the baffle plate and are sieved through the sieve plate inside it to remove the peculiar smell and impurity particles in the milk powder particles, and remove the impurities and particles that may remain during the drying process, such as incompletely dried milk powder lumps, dust in the air, etc. This can ensure the purity and safety of the milk powder, guarantee the fresh smell of the milk powder, the contact ring two revolves around the rotating shaft as the center and rotates by itself under the action of the contact ring one. At this time, the self-rotation of the sieve cylinder further improves the sieving effect. After the fluidity of the milk powder is enhanced, the purity and safety of the milk powder are further improved, the fresh smell of the milk powder is guaranteed, and the flow of the drying air can be made smoother.

[0019] (5) In this milk powder drying device, the telescopic spring rod returns to its original state and drives the inclined plate to move upward. At this time, the reciprocating up and down movement of the inclined plate is realized. The inclined plate vibrates under the action of the rotating block on it, preventing the milk powder particles from being blocked in the feed pipe between the cyclone separator during transportation, thereby affecting the transportation effect and efficiency, keeping the milk powder with appropriate fluidity during transportation, avoiding blockage problems caused by powder accumulation or excessive humidity, avoiding the situation of powder jamming in the transportation pipeline or equipment, improving the continuity and production efficiency of the equipment, and preventing the milk powder from being affected by local humidity due to accumulation during the whole production process, thereby improving the drying effect and reducing the generation of unqualified products. Brief Description of the Drawings

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the overall internal structure of the present invention; Figure 3 is a schematic diagram of the positional structure of the stirring plate and the feed cylinder of the present invention; Figure 4 For the present invention Figure 3 is an enlarged schematic diagram of part A structure in the present invention; Figure 5 is a schematic diagram of the positional structure of the fixed ring and the stirring ring of the present invention; Figure 6 is a schematic diagram of the positional structure of the drying tray and the baffle plate of the present invention; Figure 7 is a schematic diagram of the positional structure of the inclined plate and the telescopic rotating rod of the present invention; Figure 8 For the present invention Figure 7 is an enlarged schematic diagram of part B structure in the present invention.

[0021] In the figure: 1. Base; 2. Combustion furnace; 3. Heat exchanger; 41. Gas transmission pipe; 42. Air filter cartridge; 43. Fan; 44. Drying cylinder; 45. Cyclone separator; 46. Storage barrel; 47. Inclined plate; 51. Motor; 52. Rotating shaft; 53. Milk transmission pipe; 54. Feed cylinder; 55. Rotating rod; 56. Stirring plate; 57. Limit disk; 58. Centrifugal cylinder; 59. Dispersing plate; 61. Fixed ring; 62. Stirring ring; 63. First telescopic rod; 64. Second telescopic rod; 65. Fixed plate; 66. Cleaning cylinder; 67. First turntable; 71. Drying plate; 72. Pushing plate; 73. First contact ring; 74. Sieve cylinder; 75. Second contact ring; 76. Rotating rod; 77. Second turntable; 78. Inclined cutting block; 79. Telescopic elastic rod; 710. Return-shaped plate; 711. Rotating block; 712. Telescopic rotating rod. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-8 , an embodiment of the present invention is: a milk powder drying device and its drying process, including a base 1, a combustion furnace 2 is fixedly installed on the top of the base 1, a heat exchanger 3 is fixedly installed on the top of the base 1, a gas transmission pipe 41 penetrates through the top of the heat exchanger 3, one end of the gas transmission pipe 41 away from the heat exchanger 3 is fixedly installed with an air filter cartridge 42, a fan 43 is fixedly installed on the surface of the air filter cartridge 42, a drying cylinder 44 is fixedly installed on the top of the base 1, a cyclone separator 45 penetrates through the surface of the drying cylinder 44, a storage barrel 46 is fixedly installed on the top of the base 1, and an atomization device for centrifugally atomizing milk sources is arranged on the surface of the drying cylinder 44. The atomization device includes a motor 51, the motor 51 is fixedly installed on the surface of the drying cylinder 44, a rotating shaft 52 penetrates through the inner wall of the drying cylinder 44 in a rotating manner, a milk transmission pipe 53 penetrates through the surface of the drying cylinder 44, the top of the milk transmission pipe 53 penetrates through a feed cylinder 54, a rotating rod 55 penetrates through the surface of the feed cylinder 54 in a rotating manner, a stirring plate 56 is fixedly installed on the circumferential surface of the rotating rod 55, a limit disk 57 is slidably installed on the circumferential surface of the rotating rod 55, a centrifugal cylinder 58 is fixedly installed on the circumferential surface of the rotating shaft 52, a dispersing plate 59 is rotatably installed on the surface of the centrifugal cylinder 58, the rotation of the centrifugal cylinder 58 drives the dispersing plate 59 to rotate, and the rotation of the dispersing plate 59 cleans the circumferential surface of the centrifugal cylinder 58 and the inner wall of the drying cylinder 44.

[0024] The combustion furnace 2 is connected to the heat exchanger 3. The air filter cylinder 42 is fixedly penetrated through the top of the drying cylinder 44. The air filter cylinder 42 filters the gas and discharges it through the top of the drying cylinder 44 by means of the fan 43. The cyclone separator cylinder 45 is connected to the storage barrel 46. A first transmission belt is connected between the motor 51 and the rotating shaft 52 in a transmission manner. The rotating shaft 52 is fixedly connected to the dispersing plate 59. The dispersing plate 59 is slidably connected to the inner wall of the drying cylinder 44. A brush plate is arranged on the surface of the dispersing plate 59.

[0025] A second transmission belt is connected between the rotating rod 55 and the rotating shaft 52 in a transmission manner. The rotating rod 55 is threadedly connected to the limiting disc 57. The stirring plate 56 is slidably connected to the inner wall of the feeding cylinder 54. The milk delivery pipe 53 is fixedly penetrated through the surface of the centrifugal cylinder 58. Fine filter holes are formed on the circumferential surface of the centrifugal cylinder 58. The rotation of the centrifugal cylinder 58 drives the dispersing plate 59 to rotate.

[0026] A milk powder drying device and its drying process, using a milk powder drying device, including: Step 1: Air enters the combustion furnace 2 through the air inlet, and then the combustion furnace 2 is started. The combustion furnace 2 reacts oxygen in the air with high temperature combustion to form carbon dioxide and water vapor. Subsequently, the nitrogen gas processed by the combustion furnace 2 enters the heat exchanger 3, and the heat exchanger 3 reduces the temperature of the nitrogen gas to an appropriate temperature value. Step 2: Subsequently, the heat exchanger 3 discharges the cooled gas into the air filter cylinder 42 through the gas transmission pipe 41. At this time, the air filter cylinder 42 filters the gas and discharges it through the top of the drying cylinder 44 by means of the fan 43. Before this, the staff starts the motor 51. The rotation of the motor 51 drives the first transmission belt to rotate. The rotation of the first transmission belt drives the rotating shaft 52 to rotate. At the same time, the rotation of the rotating shaft 52 drives the second transmission belt to rotate. The rotation of the second transmission belt drives the rotating rod 55 to rotate. At the same time, the rotation of the rotating rod 55 drives the stirring plate 56 to rotate. Step 3: The staff pours the milk source into the feeding cylinder 54. At this time, the stirring plate 56 rotates under the action of the rotating rod 55 to stir the milk source inside the feeding cylinder 54. At the same time, the rotation of the rotating rod 55 drives the limiting disc 57 to move downward to close the inlet of the feeding cylinder 54 leading to the milk delivery pipe 53. Subsequently, the rotating rod 55 rotates to drive the limiting disc 57 to move upward until it contacts and opens the inlet, realizing the quantitative and timed delivery of the milk source. Step 4: Subsequently, the stirred milk source flows into the centrifugal cylinder 58 through the milk delivery pipe 53. At the same time, the rotation of the rotating shaft 52 drives the centrifugal cylinder 58 to rotate. The rotation of the centrifugal cylinder 58 forms milk source particles in a mist state under the action of centrifugal force inside it. Subsequently, the milk source particles contact the hot air at the top of the drying cylinder 44, and the moisture inside the milk source particles is evaporated to form dry milk source particles. At the same time, the rotation of the centrifugal cylinder 58 drives the dispersing plate 59 to rotate, and the rotation of the dispersing plate 59 cleans the circumferential surface of the centrifugal cylinder 58 and the inner wall of the drying cylinder 44.

[0027] During the operation of this embodiment: Air enters the inside of the combustion furnace 2 through the air inlet, and then the combustion furnace 2 is started. The combustion furnace 2 reacts oxygen in the air with high temperature combustion to form carbon dioxide and water vapor. Then, the nitrogen gas processed by the combustion furnace 2 enters the inside of the heat exchanger 3. The heat exchanger 3 reduces the temperature of the nitrogen gas to an appropriate temperature value, avoiding the risk of generating sparks and subsequent explosion during the drying process, reducing the potential danger of dust explosion, ensuring production safety, and helping the air flow to effectively evaporate moisture without overheating the milk powder particles and causing their spontaneous combustion. Then, the heat exchanger 3 discharges the cooled gas into the inside of the air filter cartridge 42 through the air delivery pipe 41. At this time, the air filter cartridge 42 filters the gas and discharges it into the top of the drying cylinder 44 through the fan 43. Before this, the staff starts the motor 51. The rotation of the motor 51 drives the rotation of the first conveyor belt. The rotation of the first conveyor belt drives the rotation of the rotating shaft 52. At the same time, the rotation of the rotating shaft 52 drives the rotation of the second conveyor belt. The rotation of the second conveyor belt drives the rotation of the rotating rod 55. At the same time, the rotation of the rotating rod 55 drives the rotation of the stirring plate 56. The staff pours the milk source into the feeding cylinder 54. At this time, the stirring plate 56 rotates under the action of the rotating rod 55 to stir the milk source inside the feeding cylinder 54, ensuring the fluidity and uniformity of the milk liquid, avoiding the deposition or precipitation of solid particles, maintaining a good raw material state, improving the product quality and taste of the milk powder. At the same time, the rotation of the rotating rod 55 drives the limiting disc 57 to move downward to close the inlet of the feeding cylinder 54 leading to the milk delivery pipe 53. Then, the rotating rod 55 rotates to drive the limiting disc 57 to move upward until it contacts and opens the inlet, realizing the quantitative and timed delivery of the milk source, ensuring that the amount of milk liquid entering the drying chamber each time is the same, helping to control the temperature and time during the drying process, thereby improving efficiency. Then, the stirred milk source flows into the inside of the centrifugal cylinder 58 through the milk delivery pipe 53. At the same time, the rotation of the rotating shaft 52 drives the rotation of the centrifugal cylinder 58. The rotation of the centrifugal cylinder 58 forms atomized milk source particles of the milk source inside it under the action of centrifugal force. Then, the milk source particles contact the hot air at the top of the drying cylinder 44, and the moisture inside the milk source particles is evaporated to form dry milk source particles. At the same time, the rotation of the centrifugal cylinder 58 drives the rotation of the dispersing plate 59. The rotation of the dispersing plate 59 cleans the circumferential surface of the centrifugal cylinder 58 and the inner wall of the drying cylinder 44, avoiding the blockage of the surface of the centrifugal cylinder 58 by the milk source scale or coked milk source particles, thereby affecting the working efficiency of the centrifugal cylinder 58. At the same time, the rotation of the dispersing plate 59 cleans the coked milk source on the inner wall of the drying cylinder 44, avoiding the accumulation of milk powder or coking on the inner wall of the drying cylinder 44, affecting the heat transfer and air flow, reducing the drying efficiency. Regular cleaning ensures the efficient operation of the equipment, extends the equipment life, and also helps to reduce pollution and ensure product quality.

[0028] Please refer to Figures 1-8, on the basis of the above embodiments, in another embodiment of the present invention, a cleaning device for cleaning the coked milk powder and scale on the inner wall of the drying cylinder 44 is provided on the circumferential surface of the rotating shaft 52. The cleaning device includes a fixing ring 61, the fixing ring 61 is slidably installed on the circumferential surface of the rotating shaft 52, a stirring ring 62 is fixedly installed on the circumference of the fixing ring 61, a first telescopic rod 63 is fixedly installed at the bottom of the stirring ring 62, a second telescopic rod 64 is fixedly installed at the top of the stirring ring 62, a fixing plate 65 is fixedly installed on the circumferential surface of the second telescopic rod 64, a cleaning cylinder 66 is rotatably installed on the surface of the fixing plate 65, a first turntable 67 is fixedly installed on the circumferential surface of the cleaning cylinder 66, and the movement of the cleaning cylinder 66 drives the movement of the first turntable 67.

[0029] The rotating shaft 52 and the fixing ring 61 are connected by threads. The first telescopic rod 63 is slidably connected to the inner wall of the drying cylinder 44. The fixing plate 65 is slidably connected to the inner wall of the drying cylinder 44. The movement of the first turntable 67 rotates under the action of the drying cylinder 44. At the same time, the rotation of the first turntable 67 drives the rotation of the cleaning cylinder 66.

[0030] Brush hairs are provided on the circumferential surface of the cleaning cylinder 66. The first turntable 67 is in contact with the inner wall of the drying cylinder 44. The rotation of the cleaning cylinder 66 drives the rotation of the brush hairs to clean the inner wall of the drying cylinder 44.

[0031] A vibration device for stirring and vibrating the milk powder is provided on the inner wall of the drying cylinder 44. The vibration device includes a drying plate 71, the drying plate 71 is rotatably installed on the inner wall of the drying cylinder 44, a baffle 72 is fixedly installed on the surface of the drying plate 71, a first contact ring 73 is fixedly installed on the inner wall of the drying cylinder 44, a sieve cylinder 74 rotatably penetrates through the surface of the drying plate 71, a second contact ring 75 is fixedly installed on the circumferential surface of the sieve cylinder 74, a rotating rod 76 is fixedly installed at the bottom of the sieve cylinder 74, a second turntable 77 is fixedly installed on the circumferential surface of the rotating rod 76, an inclined cutting block 78 is fixedly installed at the bottom of the second turntable 77, a telescopic elastic rod 79 is fixedly installed at the bottom of the second turntable 77, a return plate 710 is sleeved on the circumferential surface of the rotating rod 76, a rotating block 711 is rotatably installed on the surface of the return plate 710, the return plate 710 moves downward under the action of the inclined cutting block 78 to drive the rotating block 711 to move downward, the movement of the rotating block 711 drives the inclined plate 47 to move downward, and a telescopic rotating rod 712 is fixedly installed on the surface of the drying cylinder 44.

[0032] The baffle 72 is rotatably connected to the rotating shaft 52. The free end of the telescopic elastic rod 79 is fixedly connected to the return plate 710. The rotating block 711 is fixedly connected to the inclined plate 47. The movement of the rotating block 711 drives the inclined plate 47 to move downward. The telescopic rotating rod 712 is rotatably connected to the inclined plate 47. A filter plate is provided on the inner wall of the sieve cylinder 74. The second contact ring 75 is in contact with the first contact ring 73. The baffle 72 is in contact with the sieve cylinder 74. The first telescopic rod 63 is fixedly connected to the drying plate 71. The angle of the inclined plate 47 is set as an inclination angle.

[0033] During the operation of this embodiment: When the rotating shaft 52 rotates under the action of the motor 51 to drive the fixed ring 61 to rotate, the fixed ring 61 rotates to drive the stirring ring 62 to rotate, and the falling milk powder particles are dispersed, avoiding the occurrence of coking, improving the drying efficiency of the milk source, and at the same time ensuring the uniformity and consistency of the milk powder. At the same time, the stirring ring 62 moves under the action of the fixed ring 61 to clean the inner wall of the drying cylinder 44, avoiding the coked milk powder or scale from hindering the heat transfer, resulting in a reduction in the drying process efficiency, and even possibly causing equipment failures and increasing the maintenance cost. Keeping the drying cylinder 44 clean helps to improve the drying efficiency, thus avoiding production stagnation caused by equipment failures. At the same time, the stirring ring 62 rotates to drive the second telescopic rod 64 to rotate, the second telescopic rod 64 rotates to drive the fixing plate 65 to rotate, the fixing plate 65 rotates to drive the cleaning cylinder 66 to rotate around the rotating shaft 52 as the center, and at the same time the cleaning cylinder 66 moves to drive the first turntable 67 to move. Since the first turntable 67 is in contact with the inner wall of the drying cylinder 44, the first turntable 67 rotates under the action of the drying cylinder 44, and at the same time the first turntable 67 rotates to drive the cleaning cylinder 66 to rotate. At this time, the cleaning cylinder 66 rotates to drive the bristles to rotate to clean the inner wall of the drying cylinder 44, further improving the cleaning effect. And the scale will affect the air flow, making the heat distribution uneven, and then reducing the drying effect. By cleaning, maintaining the good working state of the equipment can ensure that the milk powder is evenly dried during the drying process, avoiding product quality differences caused by uneven drying.

[0034] The telescopic rod 63 rotates under the action of the stirring ring 62 to drive the drying tray 71. The rotation of the drying tray 71 drives the rotation of the baffle 72. The rotation of the baffle 72 stirs and moves the dried milk powder particles accumulated inside the drying tray 71. At this time, the dried milk powder particles enter the inside of the sieve cylinder 74 under the action of the baffle 72 and are sieved through the sieve plate inside it to remove the peculiar smell and impurity particles in the milk powder particles, and remove the impurities and particles that may remain during the drying process, such as incompletely dried milk powder lumps, dust in the air, etc. This can ensure the purity and safety of the milk powder, ensure the fresh smell of the milk powder. At the same time, the drying tray 71 rotates under the action of the telescopic rod 63 to drive the sieve cylinder 74 to rotate. The sieve cylinder 74 rotates around the rotating shaft 52 to drive the contact ring two 75 to move. Because the contact ring two 75 contacts the contact ring one 73, the contact ring two 75 rotates around the rotating shaft 52 and rotates around its own axis under the action of the contact ring one 73. At this time, the self-rotation of the sieve cylinder 74 further improves the sieving effect. After the fluidity of the milk powder is enhanced, the purity and safety of the milk powder are further improved, the fresh smell of the milk powder is ensured, and the flow of the drying air can be made smoother. At the same time, the rotation of the sieve cylinder 74 drives the rotation of the rotating rod 76. The rotation of the rotating rod 76 drives the rotation of the turntable two 77. At the same time, the rotation of the turntable two 77 drives the rotation of the inclined cutting block 78. The rotation of the inclined cutting block 78 contacts and squeezes the return plate 710 to move downward. The return plate 710 moves downward under the action of the inclined cutting block 78 to drive the rotating block 711 to move downward. The movement of the rotating block 711 drives the inclined plate 47 to move downward. Subsequently, when the telescopic spring rod 79 loses its action on it, it deforms and restores. At this time, the restoration of the telescopic spring rod 79 drives the inclined plate 47 to move upward. At this time, the reciprocating up and down movement of the inclined plate 47 is realized. The inclined plate 47 vibrates under the action of the rotating block 711 on it, avoiding the blockage of the milk powder particles in the feed pipe between the cyclone separator 45 during transportation, thereby affecting the transportation effect and efficiency, keeping the appropriate fluidity of the milk powder during transportation, avoiding the blockage problem caused by powder accumulation or excessive humidity, avoiding the situation of powder jamming in the transportation pipeline or equipment, improving the continuity and production efficiency of the equipment, and avoiding the influence of local humidity on the milk powder due to accumulation during the whole production process, thereby improving the drying effect and reducing the generation of unqualified products.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A milk powder drying device, comprising a base (1), characterized in that: A combustion furnace (2) is fixedly mounted on the top of the base (1), a heat exchanger (3) is fixedly mounted on the top of the base (1), a drying cylinder (44) is fixedly mounted on the top of the base (1), a cyclone separation cylinder (45) is fixedly penetrated through the surface of the drying cylinder (44), a storage barrel (46) is fixedly mounted on the top of the base (1), an atomizing device for centrifugally atomizing milk source is arranged on the surface of the drying cylinder (44), the atomizing device comprises a motor (51), the motor (51) is fixedly mounted on the surface of the drying cylinder (44), and the drying cylinder (44) is provided with a cyclone separation cylinder (45) and a storage barrel (46) is fixedly mounted on the top of the base (1). A rotating shaft (52) is rotatably penetrated through the inner wall of the drying cylinder (44); a milk delivery tube (53) is fixedly penetrated through the surface of the drying cylinder (44); a feeding cylinder (54) is fixedly penetrated through the top of the milk delivery tube (53); a rotating rod (55) is rotatably penetrated through the surface of the feeding cylinder (54); a stirring plate (56) is fixedly mounted on the circumferential surface of the rotating rod (55); a limiting disk (57) is slidably mounted on the circumferential surface of the rotating rod (55); a centrifugal cylinder (58) is fixedly mounted on the circumferential surface of the rotating shaft (52); and a scattering plate (59) is rotatably mounted on the surface of the centrifugal cylinder (58).

2. A milk powder drying device according to claim 1, characterized in that: The combustion furnace (2) is connected to the heat exchanger (3), the air filter cartridge (42) is fixedly passed through the top of the drying cylinder (44), the cyclone separation cylinder (45) is connected to the storage barrel (46), a transmission belt is connected between the motor (51) and the rotating shaft (52), the rotating shaft (52) is fixedly connected to a scattering plate (59), the scattering plate (59) is slidably connected to the inner wall of the drying cylinder (44), a brush plate is provided on the surface of the scattering plate (59), an air supply pipe (41) is fixedly passed through the top of the heat exchanger (3), an air filter cartridge (42) is fixedly installed at one end of the air supply pipe (41) away from the heat exchanger (3), and a fan (43) is fixedly installed on the surface of the air filter cartridge (42).

3. A milk powder drying device according to claim 2, characterized in that: A second transmission belt is connected between the rotating rod (55) and the rotating shaft (52); the rotating rod (55) and the limiting plate (57) are connected via threads; the stirring plate (56) is slidably connected to the inner wall of the feeding cylinder (54); the milk delivery tube (53) is fixedly passed through the surface of the centrifugal cylinder (58); and the circumferential surface of the centrifugal cylinder (58) is provided with fine filter holes.

4. A milk powder drying device according to claim 3, characterized in that: The circumferential surface of the rotating shaft (52) is provided with a cleaning device for cleaning the coked milk powder and scale on the inner wall of the drying cylinder (44), the cleaning device comprising a fixing ring (61), the fixing ring (61) being slidably mounted on the circumferential surface of the rotating shaft (52), a stirring ring (62) being fixedly mounted on the circumference of the fixing ring (61), a telescopic rod 1 (63) being fixedly mounted on the bottom of the stirring ring (62), a telescopic rod 2 (64) being fixedly mounted on the top of the stirring ring (62), a fixing plate (65) being fixedly mounted on the circumferential surface of the telescopic rod 2 (64), a cleaning cylinder (66) being rotatably mounted on the surface of the fixing plate (65), and a rotating disk 1 (67) being fixedly mounted on the circumferential surface of the cleaning cylinder (66).

5. A milk powder drying device according to claim 4, characterized in that: The rotating shaft (52) and the fixing ring (61) are connected by threads, the telescopic rod (63) is slidably connected to the inner wall of the drying cylinder (44), and the fixing plate (65) is slidably connected to the inner wall of the drying cylinder (44).

6. A milk powder drying device according to claim 5, characterized in that: The circumferential surface of the cleaning cylinder (66) is provided with bristles, and the first rotating disk (67) is in contact with the inner wall of the drying cylinder (44).

7. A milk powder drying device according to claim 6, characterized in that: The inner wall of the drying cylinder (44) is provided with a vibration device for stirring and vibrating the milk powder, the vibration device comprising a drying plate (71), the drying plate (71) being rotatably mounted on the inner wall of the drying cylinder (44), a paddle (72) being fixedly mounted on the surface of the drying plate (71), a contact ring 1 (73) being fixedly mounted on the inner wall of the drying cylinder (44), a sieve cylinder (74) being rotatably penetrated through the surface of the drying plate (71), a contact ring 2 (75) being fixedly mounted on the circumferential surface of the sieve cylinder (74), and the A rotating rod (76) is fixedly mounted on the bottom of the screen cylinder (74); a rotating disc 2 (77) is fixedly mounted on the circumferential surface of the rotating rod (76); a bevel block (78) is fixedly mounted on the bottom of the rotating disc 2 (77); a telescopic elastic rod (79) is fixedly mounted on the bottom of the rotating disc 2 (77); a circular plate (710) is sleeved on the circumferential surface of the rotating rod (76); a rotating block (711) is rotatably mounted on the surface of the circular plate (710); and a telescopic rotating rod (712) is fixedly mounted on the surface of the drying cylinder (44).

8. A milk powder drying device according to claim 7, characterized in that: The paddle plate (72) is rotatably connected to the rotating shaft (52), the free end of the telescopic elastic rod (79) is fixedly connected to the circular plate (710), the rotating block (711) is fixedly connected to the inclined plate (47), the telescopic rotating rod (712) is rotatably connected to the inclined plate (47), the inner wall of the sieve cylinder (74) is provided with a filter plate, the contact ring 2 (75) is in contact with the contact ring 1 (73), the paddle plate (72) is in contact with the sieve cylinder (74), the telescopic rod 1 (63) is fixedly connected to the drying plate (71), and the angle of the inclined plate (47) is set to be an inclination angle.

9. A milk powder drying device and a drying process thereof, wherein the milk powder drying device according to claim 8 is characterized in that: include: Step 1: air enters the combustion furnace (2) through the air inlet, and then the combustion furnace (2) is started. The combustion furnace (2) reacts oxygen in the air with high temperature to form carbon dioxide and water vapor. Then, the nitrogen treated by the combustion furnace (2) enters the heat exchanger (3), and the heat exchanger (3) reduces the temperature of the nitrogen to a suitable temperature value; Step 2: The heat exchanger (3) then discharges the cooled gas into the interior of the air filter cartridge (42) through the gas delivery pipe (41). At this time, the air filter cartridge (42) filters the gas and discharges the gas through the top of the drying cartridge (44) through the fan (43). Prior to this, the staff starts the motor (51). The rotation of the motor (51) drives the transmission belt 1 to rotate. The rotation of the transmission belt 1 drives the rotating shaft (52) to rotate. At the same time, the rotation of the rotating shaft (52) drives the transmission belt 2 to rotate. The rotation of the transmission belt 2 drives the rotating rod (55) to rotate. At the same time, the rotation of the rotating rod (55) drives the stirring plate (56) to rotate. Step 3: The staff pours the milk source into the feed barrel (54), and the stirring plate (56) rotates under the action of the rotating rod (55) to stir the milk source inside the feed barrel (54). At the same time, the rotating rod (55) rotates to drive the limit plate (57) to move downward to close the entrance of the feed barrel (54) leading to the milk delivery pipe (53). Then, the rotating rod (55) rotates to drive the limit plate (57) to move upward until it contacts and opens the entrance, thereby achieving quantitative and timely delivery of the milk source. Step 4: The milk source after stirring flows into the interior of the centrifugal cylinder (58) through the milk delivery tube (53). At the same time, the rotating shaft (52) rotates to drive the centrifugal cylinder (58) to rotate. The centrifugal cylinder (58) rotates to form atomized milk source particles under the action of centrifugal force. The milk source particles then come into contact with the hot air at the top of the drying cylinder (44) to evaporate the water inside the milk source particles to form dry milk source particles. At the same time, the rotation of the centrifugal cylinder (58) drives the scattering plate (59) to rotate. The scattering plate (59) rotates to clean the circumferential surface of the centrifugal cylinder (58) and the inner wall of the drying cylinder (44).

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