High-efficiency centrifugal spray dryer

Abstract

The utility model discloses a high-efficiency centrifugal spray dryer which comprises a tank body, an atomizing nozzle is arranged on the upper top wall of the tank body, a first gas transmission ring is fixedly connected to the upper top wall of the tank body, a first nozzle is fixedly connected to the side surface of the first gas transmission ring, a gas transmission pipe is fixedly connected to the side surface of the first gas transmission ring, and a second nozzle is fixedly connected to the side surface of the second gas transmission ring. A communicating pipe is fixedly connected to the side surface of the gas conveying pipe, a second gas conveying ring is fixedly connected to the end, away from the gas conveying pipe, of the communicating pipe, a second spray head is fixedly connected to the side surface of the second gas conveying ring, a third spray head is fixedly connected to the side surface of the second gas conveying ring, and a wind guide plate is fixedly connected to the side inner wall of the tank body. By means of the components, the flow direction of dry gas sprayed out of the second spray head can be changed through the air guide plate, the dry gas can be gathered towards the center and flow from top to bottom, air curtains are formed on the inner wall and the center of the tank body, particles adsorbed on the inner wall of the tank body are reduced, and cleaning of the tank body and recycling of the particles are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, and in particular to a high-efficiency centrifugal spray dryer. Background Technology

[0002] Existing high-efficiency centrifugal spray dryers all have a guide seat inside the tank, which causes the atomized droplets sprayed from the atomizing nozzle to drift diagonally downward along the outside of the guide seat and be dried by the hot air sprayed from the air outlet ring. This allows the hot air to fully contact the atomized droplets, improving the drying effect. However, the atomized droplets will form particles during the drying process, which will be adsorbed onto the guide seat. For example, a centrifugal spray dryer with uniform drying disclosed in Chinese Patent Application No. CN202120729116.4, although it has a guide seat installed inside the dryer body, and the hot air sprayed from the air outlet nozzle at the bottom of the first air outlet ring will first contact the sprayed atomized droplets and push the atomized droplets diagonally downward along the outside of the guide seat, while drying the atomized droplets, will cause the particles formed after drying to be adsorbed onto the guide seat, which is not easy to be discharged from the dryer and is inconvenient to clean, thus limiting its use. Utility Model Content

[0003] The purpose of this invention is to solve at least one of the technical problems existing in the prior art and to provide a high-efficiency centrifugal spray dryer.

[0004] This utility model also provides a high-efficiency centrifugal spray dryer, comprising: a tank body; an atomizing nozzle is provided on the upper top wall of the tank body; a first gas conveying ring is fixedly connected to the upper top wall of the tank body; a first nozzle is fixedly connected to the side surface of the first gas conveying ring; a gas conveying pipe is fixedly connected to the side surface of the first gas conveying ring; a connecting pipe is fixedly connected to the side surface of the gas conveying pipe; a second gas conveying ring is fixedly connected to the end of the connecting pipe away from the gas conveying pipe; a second nozzle is fixedly connected to the side surface of the second gas conveying ring; a third nozzle is fixedly connected to the side surface of the second gas conveying ring; and a guide plate is fixedly connected to the inner side wall of the tank body. Through these components, the guide plate can change the flow direction of the drying gas sprayed from the second nozzle, allowing the drying gas to gather towards the center and flow from top to bottom, forming an air curtain on the inner wall and center of the tank body, reducing particles adsorbed on the inner wall of the tank body, facilitating tank cleaning and particle recovery.

[0005] According to the present invention, a high-efficiency centrifugal spray dryer has a conveying pipe fixedly connected to the lower surface of the tank, and a feeding cylinder fixedly connected to the end of the conveying pipe away from the tank. The dried granules are fed into the feeding cylinder through the conveying pipe.

[0006] According to the present invention, a high-efficiency centrifugal spray dryer has a side surface of a feeding cylinder fixedly connected to a tank body, and a filter screen fixedly connected to the inner side wall of the feeding cylinder. The filter screen helps retain particles in the feeding cylinder.

[0007] According to the present invention, a high-efficiency centrifugal spray dryer includes a blower fixedly connected to the upper surface of the tank, with the input end of the blower fixedly connected to a feeding cylinder. The blower draws particles and heated exhaust gas into the feeding cylinder, and then the exhaust gas is discharged through a filter screen from the output end of the blower.

[0008] According to the present invention, a high-efficiency centrifugal spray dryer has a fixing plate fixedly connected to the side surface of the tank, and bolts are threaded onto the side surface of the fixing plate. The fixing plate is used to fix the container holding the granules below the feeding cylinder, and the bolts are used to clamp the container securely.

[0009] According to the present invention, a high-efficiency centrifugal spray dryer has an inlet fixedly connected to the upper surface of the tank, and a fixing plate is located below the feeding cylinder. Material is added to the tank through the inlet.

[0010] According to the present invention, a high-efficiency centrifugal spray dryer is provided, wherein an air delivery pipe is fixedly connected to the end of the air delivery pipe away from the air delivery ring, and a heating tank is fixedly connected to the end of the air delivery pipe away from the air delivery pipe. The heating tank is used to heat the drying gas and then send it into the air delivery pipe through the air delivery pipe.

[0011] According to the present invention, a high-efficiency centrifugal spray dryer includes a second fan fixedly connected to the side surface of the heating tank, and a second gas conveying ring fixedly connected to the tank body. This allows the second fan to deliver drying gas into the heating tank for heating. Beneficial effects

[0012] This technical solution utilizes a guide plate to change the flow direction of the drying gas ejected from nozzle two, allowing the drying gas to gather towards the center and flow from top to bottom. This creates an air curtain between the drying gas and the inner wall of the tank, reducing the amount of dried particles adsorbed on the inner wall of the tank. Nozzles one and three blow drying gas from above and below respectively, improving the drying effect. Furthermore, fan one draws the waste gas and particles generated during the drying process into the feeding cylinder for separation. During the conveying process, both waste gas and particles flow along the conveying pipe. The conveying pipe increases the flow path of the waste gas and particles and utilizes the residual heat of the waste gas, allowing the residual heat to continue drying the particles, further enhancing the drying effect. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is an overall structural diagram of the centrifugal spray dryer of this utility model;

[0015] Figure 2 This is a cross-sectional view of the tank of the centrifugal spray dryer of this utility model;

[0016] Figure 3 This utility model relates to a centrifugal spray dryer. Figure 2 Partial structural diagram at point A in the middle;

[0017] Figure 4 This is a structural diagram of the first and second air-transporting rings of the centrifugal spray dryer of this utility model.

[0018] Legend:

[0019] 1. Tank body; 2. Inlet; 3. Fan 1; 4. Feeding cylinder; 5. Air supply pipe; 6. Connecting pipe; 7. Air supply pipe; 8. Heating tank; 9. Fan 2; 10. Conveying pipe; 11. Fixing plate; 12. Bolt; 13. Atomizing nozzle; 14. Air supply ring 1; 15. Nozzle 1; 16. Air guide plate; 17. Air supply ring 2; 18. Nozzle 2; 19. Nozzle 3; 20. Filter screen. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] Reference Figure 1-4 This utility model discloses a high-efficiency centrifugal spray dryer, comprising: a tank body 1, an atomizing nozzle 13 disposed on the upper top wall of the tank body 1, a first air supply ring 14 fixedly connected to the upper top wall of the tank body 1, a first nozzle 15 fixedly connected to the side surface of the first air supply ring 14, a first air supply pipe 5 fixedly connected to the side surface of the first air supply ring 14, a connecting pipe 6 fixedly connected to the side surface of the first air supply pipe 5, a second air supply ring 17 fixedly connected to the end of the connecting pipe 6 away from the first air supply pipe 5, a second nozzle 18 fixedly connected to the side surface of the second air supply ring 17, a third nozzle 19 fixedly connected to the side surface of the second air supply ring 17, and a guide plate 16 fixedly connected to the inner side wall of the tank body 1.

[0022] Specifically, the material enters the tank 1 through the inlet 2 and is atomized by the atomizing nozzle 13. Simultaneously, the heated drying gas enters the first gas conveying ring 14 through the gas conveying pipe 5, and is diverted through the connecting pipe 6 to the second gas conveying ring 17. The drying gas is then ejected from nozzle 15 on the first gas conveying ring 14 and nozzles 18 and 19 on the second gas conveying ring 17. Nozzle 18 ejects the drying gas vertically, causing it to hit the air guide plate 16 and then travel along the air guide plate... The sloping surface of nozzle 16 flows towards the center of tank 1. Nozzle 19 has a certain tilt angle and faces the center of tank 1. Nozzle 2 18 and nozzle 3 19 are arranged alternately. At the same time, the air guide plate 16 ensures that the dry gas sprayed by nozzle 15 can only be discharged from the slot at the center of the air guide plate 16. The air guide plate 16 restricts the dry gas sprayed by nozzle 15 to form an air curtain, reducing the particles adsorbed on the inner wall of tank 1 after drying. The dry gas sprayed by nozzle 15 and nozzle 3 19 from the top and bottom respectively improves the drying effect.

[0023] A conveying pipe 10 is fixedly connected to the lower surface of the tank body 1. A feeding cylinder 4 is fixedly connected to the end of the conveying pipe 10 away from the tank body 1. The side surface of the feeding cylinder 4 is fixedly connected to the tank body 1. A filter screen 20 is fixedly connected to the inner side wall of the feeding cylinder 4. A blower 3 is fixedly connected to the upper surface of the tank body 1. The input end of the blower 3 is fixedly connected to the feeding cylinder 4. A fixing plate 11 is fixedly connected to the side surface of the tank body 1. Bolts 12 are threadedly connected to the side surface of the fixing plate 11. An inlet 2 is fixedly connected to the upper surface of the tank body 1. The fixing plate 11 is located below the feeding cylinder 4.

[0024] Specifically, a fixing plate 11 is fixed to the outside of the tank 1, which can be used to fix the recycling container. The fixing plate 11 can be tightened by bolts 12 to improve the fixing effect on the container. The dried granules will fall from the bottom of the tank 1 into the conveying pipe 10, and the blower 3 will provide power to draw the granules and the waste gas generated during the drying process into the feeding cylinder 4 through the conveying pipe 10. The filter screen 20 is used to isolate the granules and waste gas, so that the waste gas passes through the filter screen 20 and is discharged from the output end of the blower 3 for recycling. The granules fall into the feeding cylinder 4 by gravity, and then fall from the outlet of the feeding cylinder 4 into the recycling container fixed by the fixing plate 11. During the recycling process, the granules and the drying gas pass through the conveying pipe 10 at the same time. The conveying pipe 10 increases the distance that the granules and the drying gas flow through, so that the granules are dried more thoroughly.

[0025] The end of the gas supply pipe 5 away from the gas supply ring 14 is fixedly connected to the gas supply pipe 7. The end of the gas supply pipe 7 away from the gas supply pipe 5 is fixedly connected to the heating tank 8. The side surface of the heating tank 8 is fixedly connected to the fan 2 9. The side surface of the gas supply ring 2 17 is fixedly connected to the tank body 1.

[0026] Specifically, the output end of fan 29 is connected to heating tank 8, and the input end is connected to pipeline for conveying dry gas. Fan 29 is used to send dry gas into heating tank 8 for heating, and then through gas supply pipe 7 into gas delivery pipe 5, so that the high temperature dry gas can enter gas delivery ring 14 and gas delivery ring 27.

[0027] Working principle: First, the material to be dried is added into the tank 1 through the inlet 2. Then, the material is sprayed out in a mist form using the atomizing nozzle 13. At the same time, the blower 9 sends the drying gas into the heating tank 8 for heating. Then, the gas is sent into the gas delivery pipe 5 through the gas delivery pipe 7, so that the high-temperature drying gas can be diverted through the connecting pipe 6 into the gas delivery ring 14 and the gas delivery ring 2 17. The gas is then sprayed out from the nozzle 15 on the gas delivery ring 14 and the nozzle 18 and nozzle 3 19 on the gas delivery ring 2 17, respectively. The gas sprayed from the nozzle 2 18 is guided to the center of the tank 1 by the air guide plate 16, forming an air curtain so that the atomized droplets can be sprayed out as much as possible. The amount of gas is directed downwards along the center of the tank 1. At the same time, the drying effect is improved by spraying dry gas from the top and bottom using nozzles 15 and 19 respectively. The dried particles fall from the bottom of the tank 1 into the conveying pipe 10. The blower 3 provides power to draw the particles and the waste gas generated during the drying process into the feeding cylinder 4 through the conveying pipe 10. The filter screen 20 isolates the particles from the waste gas, allowing the waste gas to pass through the filter screen 20 and be discharged from the output end of the blower 3 for recycling. The particles fall into the feeding cylinder 4 by gravity and then fall from the outlet of the feeding cylinder 4 into the recycling container fixed by the fixing plate 11.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A high-efficiency centrifugal spray dryer, characterized in that, include: The tank (1) has an atomizing nozzle (13) on its upper top wall. An air supply ring (14) is fixedly connected to the upper top wall of the tank (1). A nozzle (15) is fixedly connected to the side surface of the air supply ring (14). An air supply pipe (5) is fixedly connected to the side surface of the air supply pipe (5). A connecting pipe (6) is fixedly connected to the side surface of the air supply pipe (5). An air supply ring (2) (17) is fixedly connected to the end of the connecting pipe (6) away from the air supply pipe (5). A nozzle (2) (18) is fixedly connected to the side surface of the air supply ring (2) (17). A nozzle (3) (19) is fixedly connected to the side surface of the air supply ring (2) (17). A guide plate (16) is fixedly connected to the inner side wall of the tank (1).

2. The high-efficiency centrifugal spray dryer according to claim 1, characterized in that, A conveying pipe (10) is fixedly connected to the lower surface of the tank (1), and a feeding cylinder (4) is fixedly connected to the end of the conveying pipe (10) away from the tank (1).

3. A high-efficiency centrifugal spray dryer according to claim 2, characterized in that, The side surface of the feeding cylinder (4) is fixedly connected to the tank body (1), and a filter screen (20) is fixedly connected to the inner side wall of the feeding cylinder (4).

4. A high-efficiency centrifugal spray dryer according to claim 1, characterized in that, A blower (3) is fixedly connected to the upper surface of the tank (1), and the input end of the blower (3) is fixedly connected to the feeding cylinder (4).

5. A high-efficiency centrifugal spray dryer according to claim 1, characterized in that, A fixing plate (11) is fixedly connected to the side surface of the tank (1), and a bolt (12) is threadedly connected to the side surface of the fixing plate (11).

6. A high-efficiency centrifugal spray dryer according to claim 5, characterized in that, The upper surface of the tank (1) is fixedly connected to the inlet (2), and the fixing plate (11) is located below the feeding cylinder (4).

7. A high-efficiency centrifugal spray dryer according to claim 1, characterized in that, The gas supply pipe (5) is fixedly connected to a gas delivery pipe (7) at one end away from the gas supply ring (14), and a heating tank (8) is fixedly connected to the other end of the gas delivery pipe (7) away from the gas supply pipe (5).

8. A high-efficiency centrifugal spray dryer according to claim 7, characterized in that, The side surface of the heating tank (8) is fixedly connected to the second fan (9), and the side surface of the second air supply ring (17) is fixedly connected to the tank body (1).

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