Flash evaporation drying machine with deslagging and material returning mechanism

Abstract

The utility model belongs to the technical field of flash drying machines, and particularly relates to a flash drying machine with a deslagging and returning mechanism, which comprises a shell, a drying cavity, a rotating column, a plurality of blades and a plurality of blades, and further comprises a base, the base is fixedly mounted at the bottom of the shell, the drying cavity is formed in the shell, the rotating column is rotatably mounted in the drying cavity, and the blades are arranged on the rotating column. The blades are fixedly mounted at the lower end of the rotating column, and the blades are fixedly mounted at the upper end of the rotating column; a conveying pipe is fixedly installed at the top of the shell, a fixing shell fixed to the base is fixedly installed at one end of the conveying pipe, a screening cavity is formed in the fixing shell, two smashing rollers are rotatably installed in the screening cavity, a rotating frame is rotatably installed in the screening cavity and located below the two smashing rollers, and a filter screen is fixedly installed in the rotating frame; and the dried and crushed materials can be screened, the unqualified materials can be dried and crushed again, and it is guaranteed that the sizes of the crushed and dried materials are qualified.

Description

Technical Field

[0001] This utility model belongs to the technical field of flash dryers, and in particular relates to a flash dryer with a slag discharge and return mechanism. Background Technology

[0002] Flash dryers are highly efficient drying equipment with advantages such as fast drying speed, short residence time, and good product quality. They are widely used in industries such as chemical, pharmaceutical, and food processing.

[0003] For example, Chinese patent CN213273569U discloses a flash dryer, including a flash dryer, a rotating shaft, and a support. The rotating shaft includes a main shaft, from bottom to top, a pulley, a lower pressure cover, a lower bearing, an upper bearing, another upper pressure cover, blades, a blade, and a fixing nut. A bearing chamber is located on the outside of the main shaft, between the upper and lower bearings. A spiral blade is mounted on the rotating shaft inside the bearing chamber. With the rotating shaft rotating, the spiral blade rotates accordingly, causing the lubricating oil on the rotating shaft to move upwards. The lubricating oil acts as a seal, sealing the gap between the bearing chamber and the rotating shaft, effectively preventing material from entering the bearing and thus avoiding its impact on the bearing. This extends the lifespan of the device, ensures long-term stable operation, and prevents safety accidents.

[0004] The aforementioned patent has the following problems:

[0005] This patent has some drawbacks in its use. For example, after the device finishes operating, it directly discharges the material. During the discharge process, some large particles are carried out with the gas due to airflow. These insufficiently dried or substandard particles can mix into the qualified products, leading to substandard product quality in subsequent use, affecting production efficiency and brand reputation. Therefore, we propose a flash dryer with a slag discharge and return mechanism. Utility Model Content

[0006] The purpose of this invention is to provide a flash dryer with a slag discharge and return mechanism to solve the problems mentioned in the background art.

[0007] In view of this, the present invention provides a flash dryer with a slag discharge and return mechanism, comprising a shell, a drying chamber, a rotating column, several blades and several cutting blades, and further comprising:

[0008] The base is fixedly installed at the bottom of the housing, the drying chamber is opened inside the housing, the rotating column is rotatably installed inside the drying chamber, a number of blades are fixedly installed at the lower end of the rotating column, and a number of blades are fixedly installed at the upper end of the rotating column.

[0009] A conveying pipe is fixedly installed on the top of the housing. A fixed shell, which is fixed to the base, is fixedly installed at one end of the conveying pipe. A screening chamber is opened inside the fixed shell. Two crushing rollers are rotatably installed inside the screening chamber. A rotating frame is rotatably installed inside the screening chamber and below the two crushing rollers. A filter screen is fixedly installed inside the rotating frame. An elliptical roller is rotatably installed inside the screening chamber and at the bottom of the rotating frame. A feed pipe is fixedly installed on one side of the housing. The fixed shell is fixedly connected to the feed pipe.

[0010] A drive assembly, located within the base, is used to drive the rotating column to rotate.

[0011] A power assembly, located on a fixed housing, is used to drive the two crushing rollers and the elliptical roller to rotate.

[0012] In this technical solution, the drive component can drive the rotating column to rotate, which in turn drives several blades and several blades to rotate. Then, the material to be dried and hot air enter the drying chamber through the feed pipe. The rotating blades provide an upward rotating airflow, which feeds the material onto the blades while drying. The blades can crush large particles. The dried and crushed material enters the conveying pipe under the action of the upward airflow. The undried material falls back onto the blades to continue drying and crushing. The material in the conveying pipe enters the screening chamber.

[0013] The power unit drives two crushing rollers to rotate in opposite directions, crushing the material. The material then falls to the top of the filter screen. The power unit then drives an elliptical roller to rotate, lifting the rotating frame. Under gravity, the rotating frame rotates downwards, causing the filter screen to rotate repeatedly. The filter screen sieves the material. Qualified material falls through the filter screen to the bottom of the screening chamber, while unqualified material falls down the inclined surface of the screening chamber into the feed pipe and then re-enters the drying chamber for crushing. This process allows for the sieving of dried and crushed material, and unqualified material is re-dried and crushed to ensure that the material is of the correct size after crushing and drying.

[0014] In the above technical solution, the driving component further includes:

[0015] The first motor is fixedly installed inside the base. The output shaft of the first motor passes through the base and the housing and extends into the drying chamber. The output shaft of the first motor is coaxially connected to the rotating column.

[0016] In this technical solution, the first motor is started first. The first motor is powered on and drives the rotating column to rotate. The rotating column drives several blades and several blades to rotate. Then, the material to be dried and hot air enter the drying chamber through the feed pipe. The rotating blades provide an upward rotating airflow. While drying, the material is sent to several blades. The blades can crush large particles of material. The dried and crushed material enters the conveying pipe under the action of the upward airflow. The undried material falls back to the blades to continue drying and crushing. The material in the conveying pipe enters the screening chamber.

[0017] In the above technical solution, the power component further includes:

[0018] The power chamber is located within a fixed housing. One end of each of the two crushing rollers passes through the screening chamber and extends into the power chamber. Gears are fixedly installed at one end of each of the two crushing rollers, and the two gears mesh. One end of the elliptical roller passes through the screening chamber and extends into the power chamber. A transmission wheel is fixedly installed at one end of the elliptical roller and at one end of one of the gears. A transmission belt is installed between the two transmission wheels. A second motor is fixedly installed on the fixed housing. The output shaft of the second motor passes through the fixed housing, extends into the power chamber, and is coaxially connected to one of the transmission wheels.

[0019] In this technical solution, the second motor is started, and the second motor is powered on and drives one of the transmission wheels to rotate. One of the transmission wheels drives the transmission belt to rotate, and the transmission belt drives the other transmission wheel to rotate. The other transmission wheel drives one of the gears to rotate forward, and one of the gears drives another gear meshing with it to rotate in the opposite direction. The two gears rotating in opposite directions drive the two crushing rollers to rotate in opposite directions. The two crushing rollers can crush the material. Then the material falls to the top of the filter screen. One of the transmission wheels drives the elliptical roller to rotate. The elliptical roller will lift the rotating frame. Then, under the action of gravity, the rotating frame rotates downward. The reciprocating rotation of the rotating frame drives the filter screen to rotate reciprocally. The filter screen can screen the material. The qualified material falls to the bottom of the screening chamber through the filter screen. The unqualified material falls down the inclined surface of the screening chamber into the feed pipe and then re-enters the drying chamber for crushing. The dried and crushed material can be screened, and the unqualified material will be dried and crushed again to ensure that the material is of qualified size after crushing and drying.

[0020] In the above technical solution, furthermore, the two gears, the two transmission wheels, the elliptical roller and the output shaft of the second motor are all rotatably connected to the power cavity, the output shaft of the second motor is rotatably connected to the fixed shell, and the output shaft of the first motor is rotatably connected to the base, the shell and the drying cavity.

[0021] In this technical solution, the two gears, the two transmission wheels, the elliptical roller, and the output shaft of the second motor can all rotate within the power cavity, ensuring that the output shaft of the second motor can rotate within the fixed housing, and ensuring that the output shaft of the first motor can rotate within the base, the housing, and the drying cavity.

[0022] In the above technical solution, the rotating frame is further arranged at an angle, and the elliptical roller is in close contact with the bottom of the rotating frame.

[0023] In this technical solution, the reciprocating rotation of the rotating frame drives the filter screen to reciprocate, and the filter screen can screen the material.

[0024] In the above technical solution, a discharge pipe is further fixedly installed on the fixed shell and below the rotating frame.

[0025] In this technical solution, it is ensured that qualified materials can be discharged through the discharge pipe.

[0026] In the above technical solution, the drying chamber, conveying pipe, screening chamber, feed pipe and discharge pipe are further connected.

[0027] In this technical solution, it is ensured that the material can pass through the feed pipe, drying chamber, conveying pipe, screening chamber and discharge pipe in sequence, and the material in the discharge pipe can re-enter the feed pipe.

[0028] The beneficial effects of this utility model are:

[0029] This flash dryer with a slag discharge and return mechanism uses a power unit to drive two crushing rollers to rotate in opposite directions. The two crushing rollers crush the material, which then falls to the top of the filter screen. The power unit then drives an elliptical roller to rotate, which lifts the rotating frame. Under gravity, the rotating frame rotates downwards, causing the filter screen to rotate back and forth. The filter screen screens the material, and qualified material falls through the filter screen to the bottom of the screening chamber. Unqualified material falls down the inclined surface of the screening chamber into the feed pipe and then re-enters the drying chamber for crushing. This process allows for the screening of dried and crushed material, and unqualified material is re-dried and crushed to ensure that the material is of the correct size after crushing and drying. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the cross-sectional structure of the shell of this utility model;

[0032] Figure 3 This is one of the schematic diagrams of the cross-sectional structure of the fixed shell of this utility model;

[0033] Figure 4 This is the second schematic diagram of the cross-sectional structure of the fixed shell of this utility model;

[0034] Figure 5 This is the third schematic diagram of the cross-sectional structure of the fixed shell of this utility model.

[0035] The markings in the diagram are as follows:

[0036] 1. Base; 2. Shell; 3. Drying chamber; 4. Rotating column; 5. Blade; 6. Blade; 7. Conveying pipe; 8. Fixed shell; 9. Screening chamber; 10. Crushing roller; 11. Rotating frame; 12. Filter screen; 13. Elliptical roller; 14. Feed pipe; 15. First motor; 16. Power chamber; 17. Gear; 18. Transmission wheel; 19. Transmission belt; 20. Second motor; 21. Discharge pipe. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0038] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0039] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0040] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0041] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0042] Example 1:

[0043] Please see Figure 1 - Figure 5 As shown, this embodiment provides a flash dryer with a slag discharge and return mechanism, including a shell 2, a drying chamber 3, a rotating column 4, several blades 5, and several blades 6, and also includes:

[0044] The base 1 is fixedly installed at the bottom of the housing 2. The drying chamber 3 is opened inside the housing 2. The rotating column 4 is rotatably installed inside the drying chamber 3. Several blades 5 are fixedly installed at the lower end of the rotating column 4, and several blades 6 are fixedly installed at the upper end of the rotating column 4.

[0045] A conveying pipe 7 is fixedly installed on the top of the housing 2. A fixed shell 8, which is fixed to the base 1, is fixedly installed at one end of the conveying pipe 7. A screening chamber 9 is opened inside the fixed shell 8. Two crushing rollers 10 are rotatably installed inside the screening chamber 9. A rotating frame 11 is rotatably installed inside the screening chamber 9 and below the two crushing rollers 10. A filter screen 12 is fixedly installed inside the rotating frame 11. An elliptical roller 13 is rotatably installed inside the screening chamber 9 and at the bottom of the rotating frame 11. A feed pipe 14 is fixedly installed on one side of the housing 2. The fixed shell 8 is fixedly connected to the feed pipe 14.

[0046] A drive assembly is located inside the base 1 and is used to drive the rotating column 4 to rotate.

[0047] The power assembly is located on the fixed housing 8 and is used to drive the two crushing rollers 10 and the elliptical roller 13 to rotate.

[0048] The drive assembly can drive the rotating column 4 to rotate, which in turn drives several blades 5 and several blades 6 to rotate. Then, the material to be dried and hot air enter the drying chamber 3 through the feed pipe 14. The rotating blades 5 provide an upward rotating airflow, which feeds the material onto the blades 6 while drying. The blades 6 can crush large particles. The dried and crushed material enters the conveying pipe 7 under the action of the upward airflow. The undried material falls back onto the blades 6 to continue drying and crushing. The material in the conveying pipe 7 enters the screening chamber 9.

[0049] The power unit drives two crushing rollers 10 to rotate in opposite directions, crushing the material. The material then falls to the top of the filter screen 12. The power unit then drives an elliptical roller 13 to rotate, lifting the rotating frame 11. Under gravity, the rotating frame 11 rotates downwards, causing the filter screen 12 to rotate back and forth. The filter screen 12 can screen the material. Qualified material falls through the filter screen 12 to the bottom of the screening chamber 9, while unqualified material falls down the inclined surface of the screening chamber 9 into the feed pipe 14 and then re-enters the drying chamber 3 for crushing. This process allows for the screening of dried and crushed material, and unqualified material is re-dried and crushed to ensure that the material is of acceptable size after crushing and drying.

[0050] In this embodiment, the driving component includes:

[0051] The first motor 15 is fixedly installed in the base 1. The output shaft of the first motor 15 passes through the base 1 and the housing 2 and extends into the drying chamber 3. The output shaft of the first motor 15 is coaxially connected with the rotating column 4.

[0052] First, the first motor 15 is started. The first motor 15 is powered on and drives the rotating column 4 to rotate. The rotating column 4 drives several blades 5 and several blades 6 to rotate. Then, the material to be dried and hot air enter the drying chamber 3 through the feed pipe 14. The rotating blades 5 provide an upward rotating airflow. While drying, the material is sent to the blades 6. The blades 6 can crush large particles. The dried and crushed material enters the conveying pipe 7 under the action of the upward airflow. The undried material falls back to the blades 6 to continue drying and crushing. The material in the conveying pipe 7 enters the screening chamber 9.

[0053] In this embodiment, the power assembly includes:

[0054] The power chamber 16 is located inside the fixed shell 8. One end of each of the two crushing rollers 10 passes through the screening chamber 9 and extends into the power chamber 16. One end of each of the two crushing rollers 10 is fixedly mounted with a gear 17, which meshes with each other. One end of the elliptical roller 13 passes through the screening chamber 9 and extends into the power chamber 16. One end of the elliptical roller 13 and one end of one of the gears 17 are fixedly mounted with a transmission wheel 18. A transmission belt 19 is installed between the two transmission wheels 18. A second motor 20 is fixedly mounted on the fixed shell 8. The output shaft of the second motor 20 passes through the fixed shell 8 and extends into the power chamber 16, and is coaxially connected to one of the transmission wheels 18.

[0055] The second motor 20 is started, energizing and driving one of the drive wheels 18 to rotate. This drive wheel 18 drives the drive belt 19, which in turn drives the other drive wheel 18 to rotate. The other drive wheel 18 drives one of the gears 17 to rotate forward, and the other gear 17 drives the other gear 17 it meshes with to rotate in the opposite direction. The two gears 17 rotating in opposite directions drive the two crushing rollers 10 to rotate in opposite directions, crushing the material. The material then falls to the top of the filter screen 12, and one of the drive wheels 18... The rotating elliptical roller 13 lifts the rotating frame 11, which then rotates downwards under gravity. The reciprocating rotation of the rotating frame 11 drives the filter screen 12 to rotate reciprocally. The filter screen 12 can screen the material. Qualified material falls to the bottom of the screening chamber 9 through the filter screen 12, while unqualified material falls into the feed pipe 14 along the inclined surface of the screening chamber 9 and then re-enters the drying chamber 3 for crushing. This process can screen the dried and crushed material, and unqualified material will be dried and crushed again to ensure that the material is of qualified size after crushing and drying.

[0056] Example 2:

[0057] This embodiment provides a flash dryer with a slag discharge and return mechanism, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0058] In this embodiment, the two gears 17, the two transmission wheels 18, the elliptical roller 13, and the output shaft of the second motor 20 are all rotatably connected to the power chamber 16. The output shaft of the second motor 20 is rotatably connected to the fixed shell 8. The output shaft of the first motor 15 is rotatably connected to the base 1, the shell 2, and the drying chamber 3.

[0059] Among them, the two gears 17, the two transmission wheels 18, the elliptical roller 13 and the output shaft of the second motor 20 can all rotate in the power chamber 16, ensuring that the output shaft of the second motor 20 can rotate in the fixed shell 8, and ensuring that the output shaft of the first motor 15 can rotate in the base 1, the shell 2 and the drying chamber 3.

[0060] Example 3:

[0061] This embodiment provides a flash dryer with a slag discharge and return mechanism, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0062] In this embodiment, the rotating frame 11 is inclined, and the elliptical roller 13 is in close contact with the bottom of the rotating frame 11.

[0063] The rotating frame 11 reciprocates, driving the filter screen 12 to reciprocate, and the filter screen 12 can screen the material.

[0064] Example 4:

[0065] This embodiment provides a flash dryer with a slag discharge and return mechanism, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0066] In this embodiment, a discharge pipe 21 is fixedly installed on the fixed shell 8 and located below the rotating frame 11.

[0067] Among them, qualified materials can be discharged through the discharge pipe 21.

[0068] Example 5:

[0069] This embodiment provides a flash dryer with a slag discharge and return mechanism, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0070] In this embodiment, the drying chamber 3, the conveying pipe 7, the screening chamber 9, the feed pipe 14, and the discharge pipe 21 are connected.

[0071] This ensures that the material can pass through the feed pipe 14, drying chamber 3, conveying pipe 7, screening chamber 9 and discharge pipe 21 in sequence, and that the material in the discharge pipe 21 can re-enter the feed pipe 14.

[0072] Working principle: First, the first motor 15 is started. The first motor 15 is powered on and drives the rotating column 4 to rotate. The rotating column 4 drives several blades 5 and several blades 6 to rotate. Then, the material to be dried and hot air enter the drying chamber 3 through the feed pipe 14. The rotating blades 5 provide an upward rotating airflow. While drying, the material is sent to several blades 6. Several blades 6 can crush large particles. The dried and crushed material enters the conveying pipe 7 under the action of the upward airflow. The undried material falls back to several blades 6 to continue to be dried and crushed. The material in the conveying pipe 7 enters the screening chamber 9.

[0073] Simultaneously, the second motor 20 is started, energizing and driving one of the drive wheels 18 to rotate. This drive wheel 18 drives the drive belt 19, which in turn drives the other drive wheel 18 to rotate. The other drive wheel 18 drives one of the gears 17 to rotate forward, and the other gear 17 drives the other gear 17 it meshes with to rotate in the opposite direction. The two gears 17 rotating in opposite directions drive the two crushing rollers 10 to rotate in opposite directions, crushing the material. The material then falls to the top of the filter screen 12, where one of the drive wheels 18 drives the elliptical roller 13 to rotate. When the elliptical roller 13 moves, it lifts the rotating frame 11, which then rotates downwards under the action of gravity. The reciprocating rotation of the rotating frame 11 drives the filter screen 12 to reciprocate. The filter screen 12 can screen the material. Qualified material falls through the filter screen 12 to the bottom of the screening chamber 9 and is finally discharged through the discharge pipe 21. Unqualified material falls down the inclined surface of the screening chamber 9 into the feed pipe 14 and then re-enters the drying chamber 3 for crushing. This process can screen the dried and crushed material, and unqualified material will be dried and crushed again to ensure that the material is of qualified size after crushing and drying.

[0074] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A flash dryer with a slag discharge and return mechanism, comprising a shell (2), a drying chamber (3), a rotating column (4), several blades (5), and several cutting blades (6), characterized in that, Also includes: The base (1) is fixedly installed at the bottom of the housing (2), the drying chamber (3) is opened inside the housing (2), the rotating column (4) is rotatably installed inside the drying chamber (3), a number of blades (5) are fixedly installed at the lower end of the rotating column (4), and a number of blades (6) are fixedly installed at the upper end of the rotating column (4). A conveying pipe (7) is fixedly installed on the top of the housing (2). A fixed shell (8) fixed to the base (1) is fixedly installed at one end of the conveying pipe (7). A screening chamber (9) is opened in the fixed shell (8). Two crushing rollers (10) are rotatably installed in the screening chamber (9). A rotating frame (11) is rotatably installed in the screening chamber (9) and below the two crushing rollers (10). A filter screen (12) is fixedly installed in the rotating frame (11). An elliptical roller (13) is rotatably installed in the screening chamber (9) and at the bottom of the rotating frame (11). A feed pipe (14) is fixedly installed on one side of the housing (2). The fixed shell (8) is fixedly connected to the feed pipe (14). A drive assembly located within the base (1) and used to drive the rotating column (4) to rotate; A power assembly located on a fixed housing (8) is used to drive the two crushing rollers (10) and the elliptical roller (13) to rotate.

2. A flash dryer with a slag discharge and return mechanism according to claim 1, characterized in that, The driving component includes: The first motor (15) is fixedly installed in the base (1). The output shaft of the first motor (15) passes through the base (1) and the housing (2) and extends into the drying chamber (3). The output shaft of the first motor (15) is coaxially connected with the rotating column (4).

3. A flash dryer with a slag discharge and return mechanism according to claim 2, characterized in that, The power assembly includes: A power chamber (16) is formed inside a fixed shell (8). One end of each of the two crushing rollers (10) passes through the screening chamber (9) and extends into the power chamber (16). One end of each of the two crushing rollers (10) is fixedly mounted with a gear (17), and the two gears (17) mesh. One end of the elliptical roller (13) passes through the screening chamber (9) and extends into the power chamber (16). One end of the elliptical roller (13) and one end of one of the gears (17) are fixedly mounted with a transmission wheel (18). A transmission belt (19) is installed between the two transmission wheels (18). A second motor (20) is fixedly mounted on the fixed shell (8). The output shaft of the second motor (20) passes through the fixed shell (8) and extends into the power chamber (16), and is coaxially connected to one of the transmission wheels (18).

4. A flash dryer with a slag discharge and return mechanism according to claim 3, characterized in that, The output shafts of the two gears (17), the two transmission wheels (18), the elliptical roller (13), and the second motor (20) are all rotatably connected to the power chamber (16). The output shaft of the second motor (20) is rotatably connected to the fixed shell (8). The output shaft of the first motor (15) is rotatably connected to the base (1), the shell (2), and the drying chamber (3).

5. A flash dryer with a slag discharge and return mechanism according to claim 1, characterized in that, The rotating frame (11) is inclined, and the elliptical roller (13) is in close contact with the bottom of the rotating frame (11).

6. A flash dryer with a slag discharge and return mechanism according to claim 1, characterized in that, A discharge pipe (21) is fixedly installed on the fixed shell (8) and below the rotating frame (11).

7. A flash dryer with a slag discharge and return mechanism according to claim 1, characterized in that, The drying chamber (3), conveying pipe (7), screening chamber (9), feed pipe (14) and discharge pipe (21) are connected.

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