Centrifugal spray dryer for drying monascus red

Abstract

The invention relates to the technical field of dryers, in particular to a centrifugal spray dryer for drying monascus red, which comprises a spray drying tower and a liquid storage tank, the discharge end of the liquid storage tank is communicated with a liquid delivery pipe, and the top wall of the spray drying tower is communicated with a centrifugal atomizer. One end of the liquid feeding pipe is communicated with the water inlet end of the centrifugal atomizer, a material collecting cover is arranged on the inner top wall of the spray drying tower and covers the centrifugal atomizer, a blowing pipe is arranged on the side wall of the spray drying tower in a communicated mode, one end of the blowing pipe extends into the spray drying tower, and the other end of the blowing pipe is communicated with the water inlet end of the centrifugal atomizer. One end of the air blowing pipe is eccentrically communicated with the side wall of the material collecting cover, the other end of the air blowing pipe is communicated with a heating piece, and a discharging pipe is arranged at the bottom end of the spray drying tower. The method has the effects of prolonging the drying time and improving the drying powder forming rate.

Description

Technical Field

[0001] The present application relates to the technical field of dryers, and in particular to a centrifugal spray dryer for drying red yeast rice. Background Art

[0002] Monascus pigment is a high-quality natural food pigment fermented from filamentous fungi of the genus Monascus and is a secondary metabolite of Monascus. Monascus powder has good water solubility, so it is often used with a centrifugal spray dryer to dry the water-soluble Monascus powder into powder.

[0003] The invention patent with publication number CN103223256A discloses a centrifugal spray dryer, including: a drying chamber, a hot air inlet and a liquid feed inlet are arranged at the upper part of the drying chamber, a hot air distributor is connected to the hot air inlet, a centrifugal atomizer is connected to the liquid feed inlet, a plurality of jet devices are symmetrically arranged inside the drying chamber, a discharge bin is arranged at the bottom of the drying chamber, a discharge port is arranged on the discharge bin, and an air extraction device is arranged on the discharge port. In the above manner, the centrifugal spray dryer of the present invention can improve the drying effect, has a simple structure, is easy to use, and is convenient for discharging.

[0004] However, when the liquid feed is sprayed from the centrifugal atomizer into the drying chamber, part of the spray droplets are discharged directly toward the discharge port under their own gravity, resulting in a short drying time and incomplete drying of the liquid feed. Summary of the invention

[0005] In order to prolong the drying time and improve the drying powder yield, the present application provides a centrifugal spray dryer for drying red yeast rice.

[0006] The present application provides a centrifugal spray dryer for drying red yeast rice, which adopts the following technical solution: A centrifugal spray dryer for drying red yeast rice comprises a spray drying tower and a liquid storage tank, wherein the discharge end of the liquid storage tank is connected to a liquid feeding pipe, the top wall of the spray drying tower is connected to a centrifugal atomizer, one end of the liquid feeding pipe is connected to a water inlet end of the centrifugal atomizer, the inner top wall of the spray drying tower is provided with a material collecting cover, the material collecting cover is provided on the centrifugal atomizer, the side wall of the spray drying tower is connected to a blow pipe, one end of the blow pipe extends into the spray drying tower, one end of the blow pipe is eccentrically connected to the side wall of the material collecting cover, the other end of the blow pipe is connected to a heater, and the bottom end of the spray drying tower is provided with a discharge pipe.

[0007] By adopting the above technical scheme, a liquid storage tank is filled with a red yeast rice solution. When the red yeast rice solution needs to be dried into powder, the red yeast rice solution is first output from the liquid storage tank through a liquid delivery pipe, and atomized and sprayed onto the inner wall of a collecting cover through a centrifugal atomizer. At the same time, the heating element is started. After the heating element heats the air, it is sent into the collecting cover through a blow pipe. Since the blow pipe is eccentrically connected to the collecting cover, the hot air rotates and flows along the inner wall of the collecting cover, and at the same time, the atomized red yeast rice droplets are dried, and finally dried into red yeast rice powder. At this time, the red yeast rice powder is discharged and collected from a discharge pipe, and the hot air rotates along the inner wall of the collecting cover to extend the contact time between the hot air and the red yeast rice droplets, thereby improving the drying effect and the drying powder yield.

[0008] Optionally, a base frame is provided in the spray drying tower, a screen is provided on the top surface of the base frame, and the spray drying tower is provided with a reciprocating mechanism for driving the base frame to reciprocate.

[0009] By adopting the above technical scheme, the red yeast rice droplets are collected on the screen after the initial drying in the collecting hood, and the base frame is driven to reciprocate through the reciprocating mechanism, and the base frame then drives the screen to reciprocate, and the qualified powder is collected through the screen in the direction close to the discharge pipe, and the unqualified powder is placed on the screen to continue drying, which is beneficial to improve the drying powder yield of the red yeast rice solution.

[0010] Optionally, the reciprocating mechanism includes a rocker arm, a rocker block is rotatably arranged in the base frame, the rocker arm passes through the rocker block, a rotating shaft is symmetrically arranged on the inner wall of the spray drying tower, one end of the rotating shaft is fixedly connected with a rocker arm, the other ends of the two rocker arms are rotatably connected to the rocker arm, and the spray drying tower is provided with a transmission assembly for driving one of the rotating shafts to rotate.

[0011] By adopting the above technical solution, when it is necessary to drive the screen to swing back and forth, first one of the rotating shafts is swung through the transmission assembly, one of the rotating shafts drives the swing arm to rotate, the swing arm drives the swing rod to swing, the swing rod swings the swing block to rotate, and the swing block then drives the screen to swing back and forth through the base frame, which is beneficial to improve the stability of the reciprocating swing of the screen.

[0012] Optionally, the transmission assembly includes a transmission fan, a branch pipe is connected to the side wall of the blowing pipe, one end of the branch pipe extends into the spray drying tower, a fixed frame is provided in the spray drying tower, a connecting shaft is rotatably provided in the fixed frame, the transmission fan is provided at one end of the connecting shaft, the transmission fan is directly opposite to one end of the branch pipe, the connecting shaft and the side wall of one of the rotating shafts are fixedly sleeved with sprockets, and the side wall transmission of the two sprockets is provided with chain belts.

[0013] By adopting the above technical solution, part of the blow air is blown into the spray drying tower from the branch pipe. Since the transmission fan is aimed at one end of the branch pipe, the blow air drives the transmission fan to rotate, the transmission fan drives the connecting shaft to rotate, the connecting shaft drives the sprocket to rotate, and under the action of the chain belt, the sprocket drives one of the rotating shafts to rotate, which is beneficial to improve the stability of the rotation of the rotating shaft.

[0014] Optionally, the inner wall of the spray drying tower is symmetrically provided with support rods, the top of the support rods is rotatably provided with support wheels, the bottom surface of the screen is provided with a lower protrusion, the support wheels abut against the bottom surface of the screen, and the base frame is provided with auxiliary parts for cooperating to drive the screen to rise and fall.

[0015] By adopting the above technical solution, during the reciprocating rotation of the screen, the screen drives the lower convex part to rotate reciprocatingly. At this time, the supporting wheel is always in contact with the bottom surface of the screen, and when the supporting wheel is in contact with the lower convex part, the screen is lifted by the supporting wheel, and when the supporting wheel is separated from the lower convex part, the screen is reset and lowered under the action of the auxiliary part, and this is repeated, so that the screen vibrates up and down, which is beneficial to improve the stability of the red yeast rice powder falling from the screen.

[0016] Optionally, the auxiliary part is a spring, and the base frame includes two groups of telescopic sub-frames. The pendulum block is rotatably arranged between the two groups of telescopic sub-frames. A connecting plate is commonly arranged at the top ends of the two groups of telescopic sub-frames. The connecting plate is fixedly arranged on the bottom surface of the screen. The spring is sleeved on the telescopic sub-frame, one end of the spring is fixedly connected to the bottom surface of the connecting plate, and the other end of the spring is fixedly connected to the side wall of the telescopic sub-frame.

[0017] By adopting the above technical solution, when the screen is lifted by the supporting wheel through the lower protrusion, the screen stretches the telescopic sub-frame and the spring through the connecting plate. When the lower protrusion is separated from the supporting wheel, the spring releases the elastic force and the screen descends through the connecting plate. This is repeated, so that the screen vibrates up and down while reciprocating. This is beneficial to break up the red yeast rice powder through vibration and improve the quality of powder drying.

[0018] Optionally, an exhaust pipe is provided in the spray drying tower, one end of the exhaust pipe extends outside the spray drying tower, a cyclone separator is provided at one end of the exhaust pipe, an exhaust port is provided at the top of the cyclone separator, a collecting pipe is provided at the bottom end of the cyclone separator, and a powder discharge pipe is provided between the collecting pipe and the discharge pipe.

[0019] By adopting the above technical solution, after the powder and the hot air pass through the screen, the powder is collected in the direction close to the discharge pipe, and the hot air flows into the exhaust pipe, and flows into the cyclone separator through the exhaust pipe. Under the action of the cyclone separator, the gas is discharged into the air from the exhaust port at this time, and the red yeast rice powder entrained in the gas is collected in the direction of the discharge pipe, and finally discharged from the powder discharge pipe, which is conducive to improving the convenience of separating the hot air from the red yeast rice powder entrained in the gas.

[0020] Optionally, the material collecting hood is in a frustum shape, and an air guide strip is annularly arranged on the inner wall of the material collecting hood.

[0021] By adopting the above technical solution, the frustum-shaped collecting hood is conducive to extending the flow path of the hot air in the collecting hood, and the air guide strips are conducive to improving the stability of the hot air rotating flow on the inner wall of the collecting hood.

[0022] Optionally, a baffle is provided on the edge of the top surface of the screen, and the baffle abuts against the inner wall of the spray drying tower.

[0023] By adopting the above technical solution, the sealing between the screen and the inner wall of the spray drying tower is improved by the baffle, and the incompletely dried powder is reduced from flowing under the screen.

[0024] In summary, this application includes the following beneficial technical effects: The liquid storage tank is filled with red yeast rice solution. When the red yeast rice solution needs to be dried into powder, the red yeast rice solution is first output from the liquid storage tank through the liquid delivery pipe, and is atomized and sprayed onto the inner wall of the collecting hood through the centrifugal atomizer. At the same time, the heating element is started. After the heating element heats the air, it is sent into the collecting hood through the blowing pipe. Since the blowing pipe is eccentrically connected to the collecting hood, the hot air rotates and flows along the inner wall of the collecting hood, and at the same time dries the atomized red yeast rice droplets, and finally dries to red yeast rice powder. At this time, the red yeast rice powder is discharged and collected from the discharge pipe, and the hot air rotates along the inner wall of the collecting hood to extend the contact time between the hot air and the red yeast rice droplets, thereby improving the drying effect and the drying powder yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the centrifugal spray dryer for drying red yeast rice of the present application; Figure 2 is a cross-sectional view of the spray drying tower of the present application; Figure 3 It is a schematic diagram of the connection between the material collecting hood and the blowing pipe of the present application; Figure 4 It is a schematic diagram of the connection between the base frame and the screen of the present application; Figure 5 It is a structural schematic diagram of the swing arm of the present application; Figure 6yes Figure 2 Magnified view of part A.

[0026] Explanation of the reference numerals: 1. spray drying tower; 2. liquid storage tank; 3. centrifugal atomizer; 4. liquid delivery pipe; 5. collecting cover; 6. blowing pipe; 7. heating element; 8. discharging pipe; 9. base frame; 10. screen; 11. rocker rod; 12. telescopic sub-frame; 13. connecting plate; 14. rocker block; 15. rotating shaft; 16. swing arm; 17. transmission fan; 18. branch pipe; 19. fixed frame; 20. connecting shaft; 21. sprocket; 22. chain belt; 23. support rod; 24. support wheel; 25. lower convex part; 26. spring; 27. air guide strip; 28. exhaust pipe; 29. ​​cyclone separator; 30. exhaust port; 31. collecting pipe; 32. powder discharging pipe; 33. baffle. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-6 This application is described in further detail.

[0028] See also Figure 1-Figure 3 A centrifugal spray dryer for drying red yeast rice comprises a spray drying tower 1 and a liquid storage tank 2. The liquid storage tank 2 is used to store red yeast rice solution, and the spray drying tower 1 is used to dry the red yeast rice solution. The liquid storage tank 2 is located beside the spray drying tower 1, and a centrifugal atomizer 3 is fixedly installed on the top surface of the spray drying tower 1, and the water inlet end of the centrifugal atomizer 3 is placed above the top of the spray drying tower 1, and the spray end of the centrifugal atomizer 3 is placed in the spray drying tower 1. The discharge end of the liquid storage tank 2 is fixedly connected with a liquid feeding pipe 4, and the end of the liquid feeding pipe 4 away from the liquid storage tank 2 is fixedly connected with the water inlet end of the centrifugal atomizer 3. A material collecting cover 5 is fixedly installed on the inner top wall of the spray drying tower 1, and the material collecting cover 5 covers the centrifugal atomizer 3 inside. The side wall of the spray drying tower 1 is also fixedly connected with a blowing pipe 6, one end of which extends into the spray drying tower 1, and one end of the blowing pipe 6 is eccentrically fixedly connected with the material collecting cover 5. The other end of the blowing pipe 6 is fixedly connected to a heating element 7. In this embodiment, the heating element 7 is a hot air blower. The bottom end of the spray drying tower 1 is fixedly connected to a discharge pipe 8.

[0029] When it is necessary to carry out powder drying to the red yeast rice solution, first start the heating element 7, which compresses and heats the air and flows into the collecting cover 5 through the air blowing pipe, thereby preheating the inside of the spray drying tower 1. After preheating, the red yeast rice solution in the liquid outlet pipe is sucked into the liquid delivery pipe 4, and then atomized and ejected through the centrifugal atomizer 3. Since the air blowing pipe 6 is eccentrically connected to the collecting cover 5, the hot air blowing drives the atomized red yeast rice droplets to rotate and flow along the inner wall of the collecting cover 5, and the atomized red yeast rice droplets are dried in the process of flowing until they become red yeast rice powder. The dried red yeast rice powder is then discharged in the direction close to the discharge pipe 8 to complete the drying of the red yeast rice powder.

[0030] It should be noted that the distance between the centrifugal atomizer 3 and the inner wall of the collecting cover 5 is far enough, and when the blowing pipe 6 blows air, most of the red yeast rice droplets are insufficient to meet the conditions for agglomeration.

[0031] See also Figure 2 , Figure 4 and Figure 5 A base frame 9 is installed in the spray drying tower 1, and a screen 10 is fixedly installed on the top surface of the base frame 9. The screen 10 is used to screen the powder to prevent a small part of the powder from drying and agglomerating.

[0032] In addition, the spray drying tower 1 is equipped with a reciprocating mechanism, which is used to drive the base frame 9 to reciprocate. The reciprocating mechanism includes a swing rod 11. The base frame 9 is composed of two groups of telescopic sub-frames 12 and a connecting plate 13, and the connecting plate 13 is fixed to the top of the two groups of telescopic sub-frames 12. A swing block 14 is rotatably installed between the two groups of telescopic sub-frames 12, and the swing rod 11 runs through the swing block 14, and the two ends of the swing rod 11 extend outside the two sides of the swing block 14. The inner wall of the spray drying tower 1 is symmetrically rotatably connected with a rotating shaft 15, and the ends of the rotating shaft 15 that are close to each other are respectively fixedly connected with a swing arm 16, and the swing arm 16 is set at a positive angle, and the end of the swing arm 16 that is away from the rotating shaft 15 is rotatably connected to the swing rod 11.

[0033] When the rotating shaft 15 continues to rotate, the rotating shaft 15 drives the swing arm 16 to rotate, the swing arm 16 set at the positive corner drives the swing rod 11 to swing, the swing rod 11 drives the swing block 14 to swing, the swing block 14 rotates between the two groups of telescopic sub-frames 12, and at the same time the swing block 14 drives the two groups of telescopic sub-frames 12 to reciprocate, and the two groups of telescopic sub-frames 12 further drive the screen 10 to reciprocate through the connecting plate 13.

[0034] See also Figure 2 and Figure 6 In order to facilitate the rotation of the rotating shaft 15, the spray drying tower 1 is equipped with a transmission assembly, and the transmission assembly includes a transmission fan 17. The side wall of the blowing pipe 6 is fixedly connected with a branch pipe 18, and the end of the branch pipe 18 away from the blowing pipe 6 is fixedly connected with the spray drying tower 1, and the branch pipe 18 is located below the screen 10. A fixed frame 19 is fixedly installed on the inner wall of the spray drying tower 1, and a connecting shaft 20 is rotatably installed in the fixed frame 19. The transmission fan 17 is coaxially fixedly connected to one end of the connecting shaft 20, and the transmission fan 17 is opposite to the end of the branch pipe 18 away from the blowing pipe 6. The connecting shaft 20 and the side wall of one of the rotating shafts 15 are fixedly sleeved with a sprocket 21, and the two sprockets 21 are jointly connected with a chain belt 22.

[0035] When hot air is blown into the blowing pipe 6, part of the hot air is blown into the spray drying tower 1 from the branch pipe 18. At this time, the hot air drives the transmission fan 17 to rotate, the transmission fan 17 drives the connecting shaft 20 to rotate, the connecting shaft 20 drives one of the sprockets 21 to rotate, one of the sprockets 21 drives another sprocket 21 to rotate through the chain belt 22, and the other sprocket 21 further drives one of the rotating shafts 15 to rotate.

[0036] See also Figure 4 The inner wall of the spray drying tower 1 is symmetrically fixedly connected with a support rod 23, and a support wheel 24 is rotatably installed on the top of the support rod 23, and the support wheel 24 abuts against the bottom surface of the screen 10. A lower convex portion 25 is symmetrically fixedly installed on the bottom surface of the screen 10. When the screen 10 rotates and the support wheel 24 abuts against the lower convex portion 25, the screen 10 is lifted upward. When the screen 10 is reset and rotated, and the support wheel 24 is separated from the lower convex portion 25, the screen 10 is reset and lowered.

[0037] In addition, in order to facilitate the lifting and lowering of the screen 10, the bottom frame 9 is equipped with an auxiliary part, which is a spring 26. The number of springs 26 is the same as the number of telescopic sub-frames 12. The spring 26 is sleeved on the telescopic sub-frame 12, and one end of the spring 26 is fixedly connected to the bottom surface of the connecting plate 13, and the other end of the spring 26 is fixedly connected to the side wall of the telescopic sub-frame 12.

[0038] When the screen 10 is lifted up, the screen 10 drives the connecting plate 13 to rise, and the connecting plate 13 stretches the telescopic sub-frame 12 and the spring 26. When the supporting wheel 24 is separated from the lower protrusion 25, the spring 26 releases its elastic force and drives the screen 10 down through the connecting plate 13. This is repeated, so that the screen 10 can be lifted and lowered while rotating back and forth, thereby breaking up a small part of the red yeast rice powder on the screen 10.

[0039] It is worth mentioning that see Figure 2 and Figure 3 The collecting cover 5 is in a frustum shape, and an air guide strip 27 is provided on the inner wall fixing ring of the collecting cover 5.

[0040] The frustum-shaped collecting cover 5 is conducive to extending the path of the hot air flowing in the collecting cover 5, and at the same time facilitates the dried powder to fall on the top surface of the screen 10 in a wide range to avoid the concentrated accumulation of powder. The air guide strip 27 is used to guide the flow path of the hot air.

[0041] See also Figure 1 An exhaust pipe 28 is fixedly connected to the spray drying tower 1, one end of the exhaust pipe 28 extends outside the spray drying tower 1, and one end of the exhaust pipe 28 is fixedly connected to a cyclone separator 29. An exhaust port 30 is provided at the top of the cyclone separator 29, and a collecting pipe 31 is fixedly connected to the bottom of the cyclone separator 29, and a powder discharge pipe 32 is provided between the collecting pipe 31 and the discharge pipe 8.

[0042] The cyclone separator 29 is a device for separating gas-solid systems. Its working principle is to rely on the rotational motion caused by the tangential introduction of airflow to make solid particles or liquid droplets with large inertial centrifugal force flung to the outer wall and separated. Finally, the hot air is discharged from the exhaust port 30, and the red yeast rice powder entrained in the hot air is transported toward the collecting pipe 31 and discharged from the powder discharge pipe 32.

[0043] It should be noted that see Figure 2 A baffle 33 is fixedly connected to the top edge of the screen 10 . The baffle 33 is made of soft rubber and abuts against the inner wall of the spray drying tower 1 .

[0044] During the rotation and lifting of the screen 10, the baffle 33 always abuts against the inner wall of the spray drying tower 1, which helps to reduce the incompletely dried powder or powder clumps falling from the gap between the screen 10 and the spray drying tower 1 to the bottom of the screen 10, thereby ensuring the quality of the red yeast rice powder.

[0045] The working principle of a centrifugal spray dryer for drying red yeast rice: When the red yeast rice solution needs to be dried to powder, the heating element 7 is first started, and the heating element 7 compresses and heats the air and then flows into the collecting cover 5 through the blowing pipe, thereby preheating the interior of the spray drying tower 1. After the preheating is completed, the red yeast rice solution in the liquid outlet pipe is sucked into the liquid delivery pipe 4, and then atomized and sprayed out through the centrifugal atomizer 3. Since the blowing pipe 6 is eccentrically connected to the collecting cover 5, and the inner wall of the collecting cover 5 is provided with an air guide strip 27, the hot blowing drives the atomized red yeast rice droplets to rotate and flow along the air guide strip 27, and finally collects on the screen 10.

[0046] When the hot air flows along the blowing pipe, part of the hot air is blown into the spray drying tower 1 from the branch pipe 18. At this time, the hot air drives the transmission fan 17 to rotate, the transmission fan 17 drives the connecting shaft 20 to rotate, the connecting shaft 20 drives one of the sprockets 21 to rotate, one of the sprockets 21 drives another sprocket 21 to rotate through the chain belt 22, and the other sprocket 21 then drives one of the rotating shafts 15 to rotate. Under the continuous rotation of the rotating shaft 15, the rotating shaft 15 drives the swing arm 16 to rotate, the swing arm 16 set at the positive corner drives the swing rod 11 to swing, the swing rod 11 drives the swing block 14 to swing, the swing block 14 rotates between the two sets of telescopic sub-frames 12, and at the same time the swing block 14 drives the two sets of telescopic sub-frames 12 to reciprocate, and the two sets of telescopic sub-frames 12 then drive the screen 10 to reciprocate through the connecting plate 13.

[0047] It is worth noting that when the screen 10 rotates and the support wheel 24 abuts against the lower protrusion 25, the screen 10 is lifted upward, and the lifted screen 10 drives the connecting plate 13 to rise. At this time, the connecting plate 13 stretches the telescopic sub-frame 12 and the spring 26. When the screen 10 is reset and rotated, and the support wheel 24 is separated from the lower protrusion 25, the spring 26 releases the elastic force and drives the screen 10 to reset and descend through the connecting plate 13. This is repeated, so that the screen 10 can be reciprocated while rotating back and forth, thereby breaking up the red yeast rice powder on the screen 10.

[0048] After being screened by the sieve 10, the red yeast rice powder is collected in the direction close to the discharge pipe 8, and the hot air blown through the sieve 10 is input into the cyclone separator 29 from the exhaust pipe 28, and under the separation action of the cyclone separator 29, the hot air is discharged from the exhaust port 30, and the red yeast rice powder entrained in the hot air is transported toward the collecting pipe 31, and the red yeast rice powder in the discharge pipe 8 and the collecting pipe 31 is collected and finally discharged from the powder discharge pipe 32.

[0049] In summary, the hot air rotates along the inner wall of the collecting hood 5, the screen 10 breaks up the red yeast rice powder clumps, the red yeast rice powder is screened, and the contact time between the hot air and the red yeast rice droplets is prolonged, thereby improving the drying effect and the drying powder yield.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A centrifugal spray dryer for drying red yeast rice, comprising a spray drying tower (1) and a liquid storage tank (2), characterized in that: The discharge end of the liquid storage tank (2) is connected to a liquid delivery pipe (4), the top wall of the spray drying tower (1) is connected to a centrifugal atomizer (3), one end of the liquid delivery pipe (4) is connected to a water inlet end of the centrifugal atomizer (3), the inner top wall of the spray drying tower (1) is provided with a material collecting cover (5), the material collecting cover (5) is arranged on the centrifugal atomizer (3), the side wall of the spray drying tower (1) is connected to a blow pipe (6), one end of the blow pipe (6) extends into the spray drying tower (1), one end of the blow pipe (6) is eccentrically connected to the side wall of the material collecting cover (5), the other end of the blow pipe (6) is connected to a heating element (7), and the bottom end of the spray drying tower (1) is provided with a discharge pipe (8).

2. A centrifugal spray dryer for drying red yeast rice according to claim 1, characterized in that: A base frame (9) is arranged inside the spray drying tower (1), a screen (10) is arranged on the top surface of the base frame (9), and the spray drying tower (1) is provided with a reciprocating mechanism for driving the base frame (9) to reciprocate.

3. A centrifugal spray dryer for drying red yeast rice according to claim 2, characterized in that: The reciprocating mechanism comprises a swing rod (11), a swing block (14) is rotatably arranged inside the base frame (9), the swing rod (11) penetrates the swing block (14), a rotating shaft (15) is symmetrically arranged on the inner wall of the spray drying tower (1), one end of the rotating shaft (15) is respectively fixedly connected to a swing arm (16), the other ends of the two swing arms (16) are respectively rotatably connected to the swing rod (11), and the spray drying tower (1) is provided with a transmission component for driving one of the rotating shafts (15) to rotate.

4. A centrifugal spray dryer for drying red yeast rice according to claim 3, characterized in that: The transmission assembly comprises a transmission fan (17), a branch pipe (18) is connected to the side wall of the blowing pipe (6), one end of the branch pipe (18) extends into the spray drying tower (1), a fixed frame (19) is arranged in the spray drying tower (1), a connecting shaft (20) is rotatably arranged in the fixed frame (19), the transmission fan (17) is arranged at one end of the connecting shaft (20), the transmission fan (17) is directly opposite to one end of the branch pipe (18), the connecting shaft (20) and the side wall of one of the rotating shafts (15) are fixedly sleeved with sprockets (21), and the side walls of the two sprockets (21) are driven by chain belts (22).

5. A centrifugal spray dryer for drying red yeast rice according to claim 3, characterized in that: The inner wall of the spray drying tower (1) is symmetrically provided with support rods (23), the top end of the support rods (23) is rotatably provided with support wheels (24), the bottom surface of the screen (10) is provided with a lower protrusion (25), the support wheel (24) abuts against the bottom surface of the screen (10), and the base frame (9) is provided with an auxiliary part for cooperating and driving the screen (10) to rise and fall.

6. A centrifugal spray dryer for drying red yeast rice according to claim 5, characterized in that: The auxiliary component is a spring (26); the base frame (9) comprises two groups of telescopic sub-frames (12); the pendulum block (14) is rotatably arranged between the two groups of telescopic sub-frames (12); a connecting plate (13) is commonly arranged at the top ends of the two groups of telescopic sub-frames (12); the connecting plate (13) is fixedly arranged on the bottom surface of the screen (10); the spring (26) is sleeved on the telescopic sub-frame (12); one end of the spring (26) is fixedly connected to the bottom surface of the connecting plate (13); and the other end of the spring (26) is fixedly connected to the side wall of the telescopic sub-frame (12).

7. A centrifugal spray dryer for drying red yeast rice according to claim 1, characterized in that: An exhaust pipe (28) is provided in the spray drying tower (1), one end of the exhaust pipe (28) extends outside the spray drying tower (1), a cyclone separator (29) is provided at one end of the exhaust pipe (28), an exhaust port (30) is provided at the top end of the cyclone separator (29), a collecting pipe (31) is provided at the bottom end of the cyclone separator (29), and a powder discharge pipe (32) is provided between the collecting pipe (31) and the discharge pipe (8).

8. The centrifugal spray dryer for drying red yeast rice according to claim 1, characterized in that: The material collecting cover (5) is in the shape of a frustum, and an air guide strip (27) is provided in an annular shape on the inner wall of the material collecting cover (5).

9. A centrifugal spray dryer for drying red yeast rice according to claim 2, characterized in that: A baffle (33) is provided on the edge of the top surface of the screen (10), and the baffle (33) abuts against the inner wall of the spray drying tower (1).

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