A heavy metal sludge drying equipment

Abstract

The present invention relates to the field of sludge drying, and in particular to a heavy metal sludge drying device, wherein a shell is fixedly arranged above a base, an active hollow main shaft and a driven hollow main shaft are rotatably installed in the shell, and hollow blades are staggered on the active hollow main shaft and the driven hollow main shaft; a drying chamber and a driving chamber are separated by a partition in the shell, a vertical auger conveying assembly is vertically arranged in the driving chamber, and an auger feed pipe of the vertical auger conveying assembly is connected to the drying chamber. In the present invention, the heavy metal sludge is located in the drying chamber and is dried by the rotation of the hollow blades. After drying, the heavy metal sludge can be transported to an inclined tube through the vertical auger conveying assembly, and the heavy metal sludge can be sorted through the sorting port and airflow in the second horizontal tube. The device can improve the drying quality of the heavy metal sludge when discharging, so as to avoid the phenomenon of incomplete drying of the heavy metal sludge when discharging, so as to facilitate subsequent treatment thereof.

Description

Technical Field

[0001] The invention relates to the technical field of sludge drying, and in particular to heavy metal sludge drying equipment. Background Art

[0002] Heavy metal sludge is a type of sludge containing high concentrations of heavy metal elements. This type of sludge usually comes from industrial wastewater treatment, mining, metallurgy, electroplating, chemical industry and other industries. Heavy metal sludge is highly polluting and harmful, and the water content in the sludge is usually high. After drying, the water is evaporated and the solid content of the sludge increases, thereby achieving sludge reduction. This is more convenient and economical for subsequent transportation, storage and treatment.

[0003] Although the hollow paddle dryer can be used to dry heavy metal sludge, it is found in actual use that due to the combined effects of various factors, such as sludge properties, process parameter settings, equipment performance, and operating procedures, the heavy metal sludge may not be completely dried when discharged. Incompletely dried heavy metal sludge not only requires more energy consumption and material input in the subsequent treatment process, but also increases the load and wear of the equipment, affecting the normal operation and life of the equipment. Therefore, there is an urgent need for a sludge drying equipment with good drying effect on heavy metal sludge. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a heavy metal sludge drying device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A heavy metal sludge drying device comprises a base, a shell is fixedly arranged above the base, a driving hollow main shaft and a driven hollow main shaft are rotatably installed in the shell, and hollow blades are staggeredly arranged on the driving hollow main shaft and the driven hollow main shaft;

[0007] The housing is provided with a drying chamber and a driving chamber separated by a partition, a vertical auger conveying assembly is vertically arranged in the driving chamber, and an auger feed pipe of the vertical auger conveying assembly is connected with the drying chamber;

[0008] An end cover is installed on the top of the shell, an air inlet duct is arranged on one side of the end cover, the other end of the air inlet duct extends into the shell and is connected with an inclined pipe, and the auger discharge pipe of the vertical auger conveying assembly is connected with the side of the inclined pipe;

[0009] The inclined tube is connected with a second transverse tube and a sludge discharge pipe, a sorting port is opened and closed at the bottom of the second transverse tube, and the sludge discharge pipe extends from the side of the shell;

[0010] A return plate is fixedly arranged below the sorting port in the drying chamber, a diverter pipe is arranged below the air inlet duct, and an air outlet of the diverter pipe is located at one end of the return plate.

[0011] In addition, a preferred structure is that a transmission gear box is fixedly arranged on one side of the shell above the base, and the transmission gear box is driven by a driving motor fixedly arranged on its outer side. An active hollow main shaft and a driven hollow main shaft are transmitted on the transmission gear box, and a plurality of bearing seats are adapted to be arranged on the base corresponding to the active hollow main shaft and the driven hollow main shaft.

[0012] In addition, a preferred structure is that side plates are installed on both sides of the shell, the active hollow main shaft and the driven hollow main shaft pass through the shell and the side plates, and a rotating joint is connected to the end of the active hollow main shaft and the driven hollow main shaft away from the transmission gear box, and the rotating joint is connected to the base through a support column.

[0013] In addition, a preferred structure is that a sludge feed port is provided on one side of the end cover located above the drying chamber, hollow blades are fixedly provided at the positions of the active hollow main shaft and the driven hollow main shaft located in the drying chamber, the hollow blades are connected to the active hollow main shaft and the driven hollow main shaft through pipelines, and the hollow blades on the active hollow main shaft and the driven hollow main shaft are staggered.

[0014] In addition, a preferred structure is that an air inlet duct is provided on the side of the end cover away from the sludge feed port, the air inlet duct extends into the driving cavity and is connected to a first transverse pipe, a diversion pipe is connected to the bottom of the first transverse pipe, the diversion pipe is "L-shaped" and passes through the partition, and the air outlet of the diversion pipe is located at one end of the return plate.

[0015] In addition, a preferred structure is that a vertical baffle is vertically movably arranged in the diverter pipe, a guide groove is provided on the inner wall of the diverter pipe corresponding to the vertical baffle, a horizontal baffle is fixedly arranged on the top of the vertical baffle, a column is vertically fixedly arranged on the top of the horizontal baffle, a through hole is provided on the top of the first horizontal tube, and the column passes through the through hole.

[0016] In addition, a preferred structure is that an inclined pipe is connected to the first transverse pipe, the inclined pipe passes through the partition and is connected to the second transverse pipe, the second transverse pipe is connected to a sludge discharge pipe, the bottom of the sludge discharge pipe is set as an inclined surface, and the sludge discharge pipe extends from the shell.

[0017] In addition, a preferred structure is that a sorting port is opened at the bottom of the second horizontal pipe on one side close to the sludge discharge pipe, a guide column is fixedly arranged below the sorting port, a baffle is adapted to be arranged on the guide column, a connecting column is fixedly and vertically arranged on the baffle, the connecting column extends out from the shell, a handle is fixedly arranged at the other end of the connecting column, and two limit members are fixedly and vertically arranged upward on the top of the handle.

[0018] In addition, a preferred structure is that the column passes through the through hole and extends from above the end cover, a special-shaped column is fixedly connected to the top of the column, a handrail is fixedly connected to the other end of the special-shaped column, a pressure plate is fixedly provided on the handrail, the pressure plate is located above the handle, and a plurality of limit cavities are adapted to correspond to the limit members on the pressure plate.

[0019] In addition, a preferred structure is that a return plate is fixedly connected to the inner wall of the shell, the return plate is inclined and located below the sorting port, and an adjustment hole is adapted to be opened on the shell corresponding to the connecting column.

[0020] The beneficial effects of the present invention are as follows: the heavy metal sludge is located in the drying chamber and is dried by the rotation of the hollow blades. After drying, the heavy metal sludge can be transported to the inclined tube through the vertical auger conveying assembly, and the heavy metal sludge is sorted through the sorting port and the airflow in the second horizontal tube. The heavy metal sludge with a smaller weight after complete drying can be directly discharged through the sludge discharge pipe, while the heavy metal sludge with a larger weight that has not been completely dried falls into the reflux plate through the sorting port for re-drying, and the heavy metal sludge accumulated on the reflux plate can also be blown off through the diversion pipe. The device can improve the drying quality of the heavy metal sludge at the time of discharge to avoid the phenomenon of incomplete drying of the heavy metal sludge at the time of discharge, so as to facilitate subsequent treatment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a heavy metal sludge drying device proposed by the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the back structure;

[0023] Figure 3 for Figure 2 Enlarged detail of the handles and armrests;

[0024] Figure 4 It is a schematic diagram of the internal structure of the housing proposed in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the partition and vertical auger conveying assembly proposed in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the vertical auger conveying assembly proposed in the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the air inlet duct, the inclined pipe, the flow splitter pipe and the return plate proposed in the present invention;

[0028] Figure 8 for Figure 7 A schematic diagram of the structure from another perspective;

[0029] Fig. 9 It is a schematic diagram of the internal structure of the air inlet duct, the first transverse pipe, the oblique pipe, the second transverse pipe, and the diverter pipe proposed in the present invention;

[0030] Fig.10 It is a schematic structural diagram of the air inlet duct, the first transverse pipe, the diverter pipe, the vertical baffle, the transverse baffle and the special-shaped column proposed in the present invention;

[0031] Fig.11 It is a schematic diagram of the structure of the second transverse pipe, the sludge discharge pipe, the sorting port and the baffle proposed in the present invention;

[0032] Fig.12 It is a schematic diagram of the structure of the stopper, the connecting column and the handle proposed in the present invention;

[0033] Fig.13 The present invention provides a schematic structural diagram of the vertical baffle, the horizontal baffle, the vertical column, the special-shaped column, the handrail and the pressure plate.

[0034] In the figure: 1 base, 11 shell, 111 drying chamber, 112 adjustment hole, 113 driving chamber, 12 side plate, 13 end cover, 131 sludge feed port, 14 transmission gear box, 140 driving motor, 141 active hollow main shaft, 142 driven hollow main shaft, 15 rotary joint, 16 hollow blade, 17 partition, 2 vertical auger conveying assembly, 21 auger feed pipe, 22 auger discharge pipe, 3 Air inlet duct, 31 first transverse pipe, 32 through hole, 4 inclined pipe, 41 second transverse pipe, 42 sludge discharge pipe, 421 inclined surface, 43 sorting port, 431 guide column, 44 baffle, 45 connecting column, 46 handle, 461 limiter, 5 diversion pipe, 50 guide groove, 51 vertical baffle, 511 horizontal baffle, 52 column, 53 special-shaped column, 54 handrail, 55 pressure plate, 551 limit cavity, 6 return plate. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] See also Figure 1-4A transmission gear box 14 is fixedly arranged on one side of the shell 11 above the base 1. The transmission gear box 14 is driven by a drive motor 140 fixedly arranged on the outer side thereof. An active hollow main shaft 141 and a driven hollow main shaft 142 are provided on the transmission gear box 14, and a plurality of bearing seats are adapted to the active hollow main shaft 141 and the driven hollow main shaft 142 on the base 1. An active gear sleeved on the active hollow main shaft 141 and a driven gear sleeved on the driven hollow main shaft 142 are arranged in the transmission gear box 14. The output end of the drive motor 140 extends into the transmission gear box 14 and transmits the active gear, thereby driving the active hollow main shaft 141 and the driven hollow main shaft 142 to rotate. It is worth noting that this is a prior art, so it will not be elaborated in detail in the present invention.

[0037] The active hollow main shaft 141 and the driven hollow main shaft 142 both pass through the shell 11, and the parts of the active hollow main shaft 141 and the driven hollow main shaft 142 located in the drying chamber 111 are fixedly connected with hollow blades 16, and the hollow blades 16 on the active hollow main shaft 141 and the driven hollow main shaft 142 are alternately arranged in sequence.

[0038] One end of the active hollow main shaft 141 and the driven hollow main shaft 142 is provided with a rotary joint 15, and a liquid inlet is provided above the rotary joint 15, and a liquid outlet is provided below the rotary joint 15. In the process of drying heavy metal sludge, the heat carrier (such as water vapor, hot water, heat transfer oil, etc.) enters the rotary joint 15 from the liquid inlet, and then enters the active hollow main shaft 141 and the driven hollow main shaft 142 through the rotary joint 15 and flows to the hollow blade 16, and finally the heat carrier flows out from the liquid outlet to achieve circulation. Through the rotation of the active hollow main shaft 141 and the driven hollow main shaft 142, the hollow blade 16 can be driven to rotate in opposite directions, and the hollow blade 16 repeatedly stirs, compresses, relaxes and pushes the material, so that the material forms a stirring state in the dryer, which is conducive to the uniform transfer of heat and the full drying of the material. It is worth noting that this is a prior art, so it is not elaborated in the present invention.

[0039] See also Figure 5-6A drying chamber 111 and a driving chamber 113 are separated by a partition 17 in the shell 11. A vertical auger conveying assembly 2 is vertically fixed in the driving chamber 113. A cavity is provided at the bottom of one side of the drying chamber 111, which is connected to the auger feed pipe 21 of the vertical auger conveying assembly 2, and an auger discharge pipe 22 is obliquely provided above the vertical auger conveying assembly 2. The principle of the vertical auger conveying assembly 2 mainly relies on the interaction between the spiral blades and the casing inside it. The material enters from the feed port, and as the motor drives the spiral blades to rotate, the material is gradually lifted to the discharge port, completing the vertical continuous conveying process. It is worth noting that the specific structure and working mode of the vertical auger conveying assembly 2 are both prior art, so they are not elaborated in the present invention.

[0040] See also Figure 1-4 , 7-8, side panels 12 are installed on both sides of the shell 11, an end cover 13 is installed on the top of the shell 11, and a sludge feed port 131 is provided on one side of the end cover 13. The heavy metal sludge can enter the drying chamber 111 through the sludge feed port 131 for drying.

[0041] The other side of the end cover 13 is provided with an air inlet duct 3, which extends into the driving chamber 113 and is connected to a first transverse pipe 31. The other end of the first transverse pipe 31 is connected to an inclined pipe 4, which is inclined downward and passes through the partition 17, and the other end of the inclined pipe 4 is connected to a second transverse pipe 41. A sorting port 43 is opened and closed at the bottom of the second transverse pipe 41, and an inclined return plate 6 is fixedly provided below the sorting port 43 in the drying chamber 111. The other end of the second transverse pipe 41 is connected to a sludge discharge pipe 42, which extends from the side of the shell 11, and the bottom surface of the sludge discharge pipe 42 is set as an inclined surface 421, which makes it easier to discharge the dried heavy metal sludge from the sludge discharge pipe 42.

[0042] A diverter pipe 5 is provided below the first transverse pipe 31. The diverter pipe 5 is arranged in an "L" shape, and the air outlet of the diverter pipe 5 is located at one end of the return plate 6. In this way, when sludge is accumulated on the return plate 6, the wind pressure can be blown to the return plate 6 through the diverter pipe 5 to blow away the sludge on the return plate 6.

[0043] The side of the inclined tube 4 is connected to the auger discharge pipe 22, so that the material transported in the vertical auger conveying assembly 2 can flow into the inclined tube 4 through the auger discharge pipe 22. And because the auger discharge pipe 22 and the inclined tube 4 are both arranged to be inclined downward, the sludge will not be blocked in the auger discharge pipe 22 and the inclined tube 4.

[0044] See also Figure 9-10A vertical baffle 51 is vertically arranged in the shunt pipe 5, and guide grooves 50 are adapted to the vertical baffle 51 on the inner walls on both sides of the shunt pipe 5, and a horizontal baffle 511 is fixedly arranged on the top of the vertical baffle 51, and a column 52 is fixedly arranged vertically upward on the top of the horizontal baffle 511, and the column 52 extends from the through hole 32 at the top of the first horizontal pipe 31 and the top of the end cover 13, and a special-shaped column 53 is fixedly connected to the top of the column 52, and a handrail 54 is arranged at the other end of the special-shaped column 53, and a pressure plate 55 is fixedly arranged on the handrail 54.

[0045] The vertical baffle 51 is located in the shunt pipe 5, and the transverse baffle 511 is located at the top of the shunt pipe 5 and blocks the shunt pipe 5. In this way, when the air inlet duct 3 is normally inlet, the airflow will not flow into the shunt pipe 5 due to the blocking of the shunt pipe 5 by the transverse baffle 511.

[0046] When the upright post 52 moves upward, the upright baffle 51 and the horizontal baffle 511 can both move vertically upward, and at this time, the upright baffle 51 moves into the first horizontal pipe 31, so that the first horizontal pipe 31 can be blocked by the upright baffle 51, and at this time, since the horizontal baffle 511 moves upward, the horizontal baffle 511 no longer blocks the diverter pipe 5. In this way, when the air inlet duct 3 is intake, the airflow cannot pass through the first horizontal pipe 31, and flows into the diverter pipe 5 instead, so that the airflow can be blown out from the air outlet of the diverter pipe 5, so that the sludge accumulated on the return plate 6 can be blown away.

[0047] See also Figure 11-12 A sorting port 43 is provided at the bottom of the second transverse tube 41, a guide column 431 is fixedly provided below the sorting port 43, and the stopper 44 is guided and moved by the guide column 431. The opening and closing size of the sorting port 43 can be controlled by the movement of the stopper 44. A connecting column 45 is fixedly and vertically provided on the stopper 44, and the connecting column 45 extends through the adjustment hole 112 on the shell 11, and a sealing sleeve for sealing is provided in the adjustment hole 112. A handle 46 is fixedly provided at the other end of the connecting column 45, and the user can control the movement of the connecting column 45 and the stopper 44 through the handle 46, and a limit member 461 is fixedly provided on the top of the handle 46.

[0048] See also Figure 3 , 12 -13, the pressing plate 55 is located above the handle 46, and the user can control the handle 46 to move horizontally, and can control the pressing plate 55 to move vertically through the armrest 54. When the user needs to move the handle 46 horizontally, the armrest 54 can be moved upward first to release the clamping between the limiting cavity 551 on the pressing plate 55 and the limiting member 461. Then the handle 46 can be moved horizontally. When the handle 46 is moved, the user only needs to move the armrest 54 downward by gravity to re-lock the other limiting cavities 551 on the pressing plate 55 and the limiting member 461 on the handle 46.

[0049] Since there are multiple limit cavities 551, the handle 46 can be fixed at different positions by clamping different limit cavities 551 with the limit members 461, so that the handle 46 and the stop member 44 will not be displaced due to the vibration of the device after the position adjustment is completed.

[0050] In this embodiment, when the user needs to dry the heavy metal sludge, he only needs to start the driving motor 140, and the driving hollow main shaft 141 and the driven hollow main shaft 142 can be driven to rotate through the transmission gear box 14. Then, a heat medium is injected into the active hollow main shaft 141, the driven hollow main shaft 142 and the hollow blade 16 through the rotary joint 15 to heat the active hollow main shaft 141, the driven hollow main shaft 142 and the hollow blade 16. This step is a prior art, so it is not described in detail.

[0051] Then the user only needs to pour the heavy metal sludge from the sludge feed port 131 into the drying chamber 111 in the housing 11 through the external auger conveying assembly. At this time, the heavy metal sludge can be dried in the drying chamber 111. After being dried, the heavy metal sludge in the drying chamber 111 enters the vertical auger conveying assembly 2 through the auger feed pipe 21, and is discharged from the auger discharge pipe 22 into the inclined pipe 4 after being conveyed by the vertical auger conveying assembly 2.

[0052] The air inlet duct 3 can be connected to an external fan, and air can be blown into the air inlet duct 3 through the fan. The airflow passes through the air inlet duct 3 and the first transverse pipe 31 and enters the inclined pipe 4. Then the airflow can blow the sludge in the inclined pipe 4 into the second transverse pipe 41. Since a sorting port 43 is provided at the bottom of the second transverse pipe 41, and the weight of the sludge after complete drying is small, while the weight of the sludge not completely dried is large, the completely dried and light sludge can be directly blown through the sorting port 43 by the airflow and discharged from the sludge discharge pipe 42, so as to realize the collection of the dried sludge.

[0053] The heavy sludge that has not been completely dried cannot pass through the second transverse pipe 41, and falls from the sorting port 43 onto the return plate 6. Since the return plate 6 is inclined, the heavy sludge that has not been completely dried can pass through the return plate 6 and re-enter the drying chamber 111 for drying.

[0054] Furthermore, when the return plate 6 is blocked due to a large amount of accumulated sludge, the user only needs to lift the handrail 54 upwards, so that the special-shaped column 53, the column 52, the horizontal baffle 511 and the vertical baffle 51 can all move vertically upwards. At this time, the vertical baffle 51 in the diverter pipe 5 moves upwards into the first horizontal pipe 31 and blocks it, and the horizontal baffle 511 also removes the blockage of the diverter pipe 5 due to its upward movement. This allows the airflow in the air inlet duct 3 to flow into the diverter pipe 5, and then the airflow is ejected from the air outlet on the diverter pipe 5 to achieve the removal of the sludge accumulated on the return plate 6. It is also worth noting that an observation window made of a transparent material is provided on the shell 11, so that the user can observe the situation inside the shell 11.

[0055] Under normal conditions, the vertical baffle 51 is located in the diverter pipe 5 , and the horizontal baffle 511 is blocked above the diverter pipe 5 . This prevents the airflow in the first horizontal pipe 31 from entering the diverter pipe 5 .

[0056] Furthermore, the stopper 44 can be guided and moved by the guide column 431. By moving the stopper 44, the opening and closing size of the sorting port 43 can be controlled, so that the user can control the sorting degree of the sludge drying effect according to different sludge properties. When the opening of the sorting port 43 is large, the sludge needs to be dried to a high degree, and only the lightest and completely dried sludge can pass through. When the opening of the sorting port 43 is gradually reduced, the required degree of drying of the sludge is gradually reduced, and the weight of the sludge that can pass through is gradually increased.

[0057] The user can adjust the stopper 44 by moving the handle 46 horizontally. When the user moves the handle 46, the user only needs to lift the armrest 54 upwards, and the limiting cavity 551 on the pressing plate 55 is released from the locking of the limiting member 461 on the handle 46. When the user moves the handle 46 to a suitable position, the user only needs to release the armrest 54, and the other limiting cavities 551 on the pressing plate 55 are locked with the limiting member 461 on the handle 46. By locking different limiting cavities 551 with the limiting member 461, the handle 46 and the stopper 44 can be fixed at different positions to control the opening and closing size of the sorting port 43.

[0058] In the present invention, the heavy metal sludge is located in the drying chamber 111 and is dried by the rotation of the hollow blades 16. After drying, the heavy metal sludge can be transported to the inclined tube 4 through the vertical auger conveying assembly 2, and the heavy metal sludge can be sorted through the sorting port 43 and the airflow in the second transverse tube 41. The heavy metal sludge with a smaller weight after complete drying can be directly discharged through the sludge discharge pipe 42, while the heavy metal sludge with a larger weight that has not been completely dried falls into the reflux plate 6 through the sorting port 43 for re-drying, and the heavy metal sludge accumulated on the reflux plate 6 can also be blown off through the diversion pipe 5. The present device can improve the drying quality of the heavy metal sludge at the time of discharge to avoid the phenomenon of incomplete drying of the heavy metal sludge at the time of discharge, so as to facilitate subsequent treatment thereof.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heavy metal sludge drying device, comprising a base (1), characterized in that: A housing (11) is fixedly disposed above the base (1), a driving hollow main shaft (141) and a driven hollow main shaft (142) are rotatably mounted in the housing (11), and hollow blades (16) are alternately disposed on the driving hollow main shaft (141) and the driven hollow main shaft (142); The housing (11) is provided with a drying chamber (111) and a driving chamber (113) separated by a partition (17); a vertical auger conveying assembly (2) is vertically arranged in the driving chamber (113); and an auger feed pipe (21) of the vertical auger conveying assembly (2) is in communication with the drying chamber (111); An end cover (13) is installed on the top of the shell (11), an air inlet duct (3) is provided on one side of the end cover (13), the other end of the air inlet duct (3) extends into the shell (11) and is connected to an inclined pipe (4), and an auger discharge pipe (22) of the vertical auger conveying assembly (2) is connected to a side of the inclined pipe (4); The inclined tube (4) is connected to a second transverse tube (41) and a sludge discharge tube (42); a sorting port (43) is provided at the bottom of the second transverse tube (41); and the sludge discharge tube (42) extends from a side of the housing (11); A return plate (6) is fixedly arranged below the sorting port (43) in the drying chamber (111); a diverter pipe (5) is arranged below the air inlet duct (3), and an air outlet of the diverter pipe (5) is located at one end of the return plate (6); An air inlet duct (3) is provided on a side of the end cover (13) away from the sludge feed port (131), the air inlet duct (3) extends into the drive chamber (113) and is connected to a first transverse pipe (31), a diverter pipe (5) is connected to the bottom of the first transverse pipe (31), the diverter pipe (5) is "L-shaped" and passes through the partition (17), and an air outlet of the diverter pipe (5) is located at one end of the return plate (6); A vertical baffle (51) is movably arranged in the diverter pipe (5), a guide groove (50) is provided on the inner wall of the diverter pipe (5) corresponding to the vertical baffle (51), a transverse baffle (511) is fixedly arranged on the top of the vertical baffle (51), a column (52) is fixedly arranged on the top of the transverse baffle (511) vertically upward, a through hole (32) is provided on the top of the first transverse pipe (31), and the column (52) passes through the through hole (32); The first transverse tube (31) is connected to an inclined tube (4), the inclined tube (4) passes through the partition plate (17) and is connected to a second transverse tube (41), the second transverse tube (41) is connected to a sludge discharge tube (42), the bottom of the sludge discharge tube (42) is arranged as an inclined surface (421), and the sludge discharge tube (42) extends out from the shell (11); A sorting port (43) is provided at a side of the bottom of the second transverse pipe (41) close to the sludge discharge pipe (42), a guide column (431) is fixedly provided below the sorting port (43), a stopper (44) is provided on the guide column (431) to adapt to the guide, a connecting column (45) is fixedly provided vertically on the stopper (44), the connecting column (45) extends out of the housing (11), a handle (46) is fixedly provided at the other end of the connecting column (45), and two stoppers (461) are fixedly provided vertically upward on the top of the handle (46); The column (52) passes through the through hole (32) and extends from above the end cover (13); a special-shaped column (53) is fixedly connected to the top of the column (52); a handrail (54) is fixedly connected to the other end of the special-shaped column (53); a pressing plate (55) is fixedly provided on the handrail (54); the pressing plate (55) is located above the handle (46); and a plurality of limiting cavities (551) are adapted to be opened on the pressing plate (55) corresponding to the limiting members (461); A return plate (6) is fixedly connected to the inner wall of the housing (11), the return plate (6) is inclined and located below the sorting port (43), and an adjustment hole (112) is adapted to be opened on the housing (11) corresponding to the connecting column (45).

2. A heavy metal sludge drying equipment according to claim 1, characterized in that: A transmission gear box (14) is fixedly arranged above the base (1) and located on one side of the housing (11). The transmission gear box (14) is driven by a drive motor (140) fixedly arranged on the outer side thereof. The transmission gear box (14) is provided with a driving hollow main shaft (141) and a driven hollow main shaft (142) for transmission. A plurality of bearing seats are adapted to be provided on the base (1) corresponding to the driving hollow main shaft (141) and the driven hollow main shaft (142).

3. A heavy metal sludge drying equipment according to claim 2, characterized in that: Side plates (12) are installed on both sides of the housing (11); the active hollow main shaft (141) and the driven hollow main shaft (142) pass through the housing (11) and the side plates (12); a rotary joint (15) is connected to one end of the active hollow main shaft (141) and the driven hollow main shaft (142) away from the transmission gear box (14); and the rotary joint (15) is connected to the base (1) via a support column.

4. A heavy metal sludge drying equipment according to claim 3, characterized in that: A sludge feed port (131) is provided on one side of the end cover (13) located above the drying chamber (111); hollow blades (16) are fixedly provided on the active hollow main shaft (141) and the driven hollow main shaft (142) at locations located within the drying chamber (111); the hollow blades (16) are connected to the active hollow main shaft (141) and the driven hollow main shaft (142) through pipelines; and the hollow blades (16) on the active hollow main shaft (141) and the driven hollow main shaft (142) are arranged in an alternating manner.

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