Sludge drying treatment structure

Abstract

The utility model discloses a sludge drying treatment structure, which relates to the technical field of environmental engineering, and comprises a support frame, a stirring mechanism and a drying mechanism, the stirring mechanism comprises a tank body, a rotating sleeve, a material guide blade and a stirring rod, the tank body is fixedly connected with the support frame, a cavity is arranged in the tank body, the rotating sleeve and the stirring rod are rotatably arranged in the cavity, and the material guide blade is arranged in the cavity. The material guiding blade is spirally and fixedly arranged on the side portion of the rotating sleeve, the drying mechanism comprises heat conduction oil and a heating assembly, a first heating cavity is formed in the rotating sleeve, a second heating cavity is formed in the stirring rod, the first heating cavity and the second heating cavity are filled with the heat conduction oil, and the heating assembly is arranged in the first heating cavity and used for heating the heat conduction oil. The heating cavity is arranged in the rotating sleeve and the stirring rod to be filled with heat conducting oil, and the electric heating coil is used for heating, so that the heating component is in direct contact with sludge, the heat exchange area is increased, rapid and uniform drying is realized, the drying time is effectively shortened, and the requirement of large-scale and efficient sludge treatment is met.

Description

Technical Field

[0001] This utility model relates to the technical field of environmental engineering, specifically to a sludge drying treatment structure. Background Technology

[0002] In environmental engineering, sludge treatment is a crucial step, aiming to reduce sludge volume, stabilize sludge properties, eliminate pathogens, and facilitate final disposal or resource utilization. Sludge drying systems are designed to achieve these goals. By drying the sludge, its moisture content is reduced, making it suitable for subsequent treatment or utilization. For example, dried sludge can be used for land application, incineration power generation, and building material production, thereby achieving sludge reduction, harmlessness, and resource recovery.

[0003] In the existing technical solution, Chinese Patent No. CN221440590U discloses a sludge drying treatment structure, including a support component and a drying component. The support component includes a bracket, on which two rotating frames are symmetrically arranged, and the two rotating frames are vertically fixed to the top surface of the bracket. The drying component includes a drying cylinder, which is horizontally arranged above the bracket and rotatably connected to the rotating frames. One end of the drying cylinder is open, and spiral blades are fixed on the inner circumference of the drying cylinder. A feeding cylinder is vertically fixed through one side of the upper part of the outer circumference of the drying cylinder, and a tilting rod is provided inside the drying cylinder, with one end of the tilting rod rotatably connected to the end face of the drying cylinder. By rotating the drying cylinder and the tilting rod rotating inside the drying cylinder, the sludge is dispersed and dried.

[0004] The shortcomings of the above-mentioned existing technical solutions are: relying solely on the contact between the drying cylinder wall and the sludge for heat transfer, the contact area between the cylinder wall and the sludge is limited, making it difficult to transfer heat quickly and evenly into the sludge, resulting in slow drying speed and low efficiency, which cannot meet the needs of large-scale and rapid sludge treatment. Utility Model Content

[0005] This invention provides a sludge drying structure that can solve the problem in the prior art where heat transfer relies solely on the contact between the drying cylinder wall and the sludge. This results in a limited contact area between the cylinder wall and the sludge, making it difficult to quickly and evenly transfer heat into the sludge, leading to slow drying speed and low efficiency.

[0006] A sludge drying structure includes a support frame, a stirring mechanism, and a drying mechanism. The stirring mechanism includes a tank, a rotating sleeve, guide blades, and a stirring rod. The tank is fixedly connected to the support frame and has a cavity inside. The top of the tank has an inlet communicating with the cavity, and the bottom of the tank has a discharge port communicating with the cavity. An inlet pipe is fixedly installed at the inlet, and a discharge pipe is fixedly installed at the discharge port. The rotating sleeve and the stirring rod are both horizontally rotatably disposed within the cavity, and the axis of the rotating sleeve coincides with the axis of the stirring rod. The guide blades are helically fixedly disposed on the side of the rotating sleeve. The drying mechanism includes heat transfer oil and a heating component. The rotating sleeve has a first heating chamber, and the stirring rod has a second heating chamber. The heat transfer oil fills the first and second heating chambers, and the first and second heating chambers are connected. The heating component is disposed in the first heating chamber for heating the heat transfer oil. The heating assembly includes several heating coils arranged in a matrix within the first heating cavity.

[0007] According to one embodiment of the present invention, the drying mechanism further includes a rotating ring, a rotating head, and a connecting pipe. The rotating ring is rotatably disposed at the end of a rotating sleeve, and the rotating head is rotatably disposed at the end of a stirring rod. One end of the connecting pipe is fixedly connected to the rotating ring and communicates with a first heating chamber, and the other end of the connecting pipe is fixedly connected to the rotating head and communicates with a second heating chamber. The drying mechanism also includes an oil pump, which is fixedly connected to the tank. The input end of the oil pump is communicated with the first heating chamber, and the output end of the oil pump is communicated with one end of the connecting pipe, while the other end of the connecting pipe is communicated with the second heating chamber.

[0008] According to one embodiment of the present invention, the stirring mechanism further includes a transmission shaft, a driving gear, and a driven gear. The transmission shaft is horizontally rotatably connected to the support frame, and the axis of the transmission shaft is parallel to the axis of the rotating sleeve. The driving gear is coaxially and fixedly connected to the transmission shaft, and the driven gear is coaxially and fixedly connected to the rotating sleeve. The driving gear and the driven gear mesh with each other. The stirring mechanism also includes a driving pulley, a driven pulley, and a transmission belt. The driving pulley is coaxially and fixedly connected to the transmission shaft, and the driven pulley is coaxially and fixedly connected to the stirring rod. The transmission belt is disposed between the driving pulley and the driven pulley. The stirring mechanism also includes a drive motor, which is fixedly connected to the support frame, and the output end of the drive motor is coaxially and fixedly connected to the transmission shaft.

[0009] According to one embodiment of the present invention, a sealing groove is provided on the side of the discharge pipe, a sealing slide plate is slidably disposed in the sealing groove, a limit hole is provided on the side of the sealing slide plate, a screw hole is provided on the side of the discharge pipe, and a locking screw is provided in the limit hole and the screw hole.

[0010] According to one embodiment of the present invention, an electromagnetic valve is provided inside the discharge pipe.

[0011] The advantages of this utility model compared to the prior art are:

[0012] 1. By setting up heating chambers filled with heat-conducting oil inside the rotating sleeve and stirring rod, and using electric heating coils for heating, the heating components directly contact the sludge, greatly increasing the heat exchange area. The rotational cooperation of the rotating sleeve and stirring rod allows the sludge to be fully in contact with the heating components while being stirred and dispersed, achieving rapid and uniform drying, effectively shortening the drying time, and meeting the needs of large-scale, high-efficiency sludge treatment.

[0013] 2. The guide blades and stirring rods work together. The guide blades guide the sludge to move and disperse, while the stirring rods break up clumps. Together, they ensure good flow of the sludge within the tank, preventing accumulation and clumping, and guaranteeing a smooth sludge treatment process. This dynamic treatment method allows the sludge to have more thorough contact with heat during drying, improving drying quality.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a three-dimensional structural diagram of a sludge drying treatment structure.

[0017] Figure 2 This is a three-dimensional structural diagram of the drying mechanism in this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the stirring mechanism in this utility model.

[0019] Figure 4 This is a three-dimensional structural cross-sectional view of the drying mechanism in this utility model.

[0020] Figure 5 This is a three-dimensional structural cross-sectional view of the stirring mechanism in this utility model.

[0021] The reference numerals in the figures include:

[0022] 1. Support frame; 2. Stirring mechanism; 3. Drying mechanism; 4. Tank body; 5. Rotating sleeve; 6. Guide blades; 7. Stirring rod; 8. Heating assembly; 9. First heating chamber; 10. Second heating chamber; 11. Rotating ring; 12. Rotating head; 13. Connecting pipe; 14. Oil pump; 15. Heating coil; 16. Drive shaft; 17. Drive gear; 18. Driven gear; 19. Drive pulley; 20. Driven pulley; 21. Transmission belt; 22. Drive motor; 23. Feed pipe; 24. Discharge pipe; 25. Sealing groove; 26. Sealing slide plate; 27. Locking screw. Detailed Implementation

[0023] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0024] First Embodiment

[0025] Please see Figures 1 to 5 As shown, a sludge drying treatment structure includes a support frame 1, a stirring mechanism 2, and a drying mechanism 3. The stirring mechanism 2 includes a tank 4, a rotating sleeve 5, a guide blade 6, and a stirring rod 7. The tank 4 is fixedly connected to the support frame 1. The tank 4 has a cavity inside. The top of the tank 4 has a feed inlet communicating with the cavity, and the bottom of the tank 4 has a discharge outlet communicating with the cavity. A feed pipe 23 is fixedly installed at the port of the feed inlet, and a discharge pipe 24 is fixedly installed at the port of the discharge outlet. The rotating sleeve 5 and the stirring rod 7 are both horizontally rotatably disposed within the cavity, and the axis of the rotating sleeve 5 coincides with the axis of the stirring rod 7. The guide blade 6 is helically fixed on the side of the rotating sleeve 5. The drying mechanism 3 includes heat-conducting oil and a heating assembly 8. The rotating sleeve 5 has a first heating chamber 9, and the stirring rod 7 has a second heating chamber 10. The heat-conducting oil fills the first heating chamber 9 and the second heating chamber 10, and the first heating chamber 9 and the second heating chamber 10 are connected. The heating assembly 8 is disposed in the first heating chamber 9 for heating the heat-conducting oil. The heating assembly 8 includes several electric heating coils 15, which are arranged in a matrix within the first heating chamber 9.

[0026] Sludge enters the cavity of tank 4 through feed pipe 23 from the feed inlet, and the rotating sleeve 5 and stirring rod 7 begin to rotate. The guide blades 6 on the outer side of the rotating sleeve 5 are spiral-shaped. During rotation, they not only guide the sludge to move axially within tank 4, but also disperse the sludge in all directions, making the sludge distribution more uniform. At the same time, the stirring rod 7 also rotates, further breaking up sludge clumps through its own stirring action, keeping the sludge in a continuous state of agitation and mixing.

[0027] When the heating coil 15 in the heating assembly 8 is energized, it generates heat to heat the heat-conducting oil filled in the first heating chamber 9 of the rotating sleeve 5 and the second heating chamber 10 of the stirring rod 7. The temperature of the heated heat-conducting oil rises, and because the first heating chamber 9 and the second heating chamber 10 are connected, the heat-conducting oil convects within the heating chambers, resulting in a uniform heat distribution. The rotating sleeve 5 and the stirring rod 7 are in direct contact with the sludge. After heating, the sleeve and stirring rod 7 rapidly transfer heat to the surrounding sludge through heat conduction, achieving all-around heating of the sludge. Under the continuous stirring and rotation of the guide blades 6 and the stirring rod 7, the sludge constantly changes its contact position with the heating components, ensuring that all sludge can fully absorb heat, accelerating moisture evaporation, and finally, the dried sludge is discharged from the discharge pipe 24.

[0028] By setting up heating chambers filled with heat-conducting oil inside the rotating sleeve 5 and stirring rod 7, and using electric heating coil 15 for heating, the heating components are in direct contact with the sludge, greatly increasing the heat exchange area. The rotational cooperation of the rotating sleeve 5 and stirring rod 7 allows the sludge to be fully in contact with the heating components while being stirred and dispersed, achieving rapid and uniform drying, effectively shortening the drying time, and meeting the needs of large-scale, efficient sludge treatment.

[0029] The guide blades 6 and the stirring rod 7 work together. The guide blades 6 guide the sludge to move and disperse, while the stirring rod 7 breaks up clumps. Together, they ensure that the sludge forms a good flow state within the tank 4, preventing sludge accumulation and clumping, and ensuring a smooth sludge treatment process. This dynamic treatment method allows the sludge to have more thorough contact with heat during the drying process, improving the drying quality.

[0030] Second Embodiment

[0031] Based on the first embodiment, the drying mechanism 3 further includes a rotating ring 11, a rotating head 12, and a connecting pipe 13. The rotating ring 11 is rotatably disposed at the end of the rotating sleeve 5, and the rotating head 12 is rotatably disposed at the end of the stirring rod 7. One end of the connecting pipe 13 is fixedly connected to the rotating ring 11 and communicates with the first heating chamber 9, and the other end of the connecting pipe 13 is fixedly connected to the rotating head 12 and communicates with the second heating chamber 10. The drying mechanism 3 also includes an oil pump 14, which is fixedly connected to the tank 4. The input end of the oil pump 14 is communicated with the first heating chamber 9, and the output end of the oil pump 14 is communicated with one end of the connecting pipe 13. The other end of the connecting pipe 13 is communicated with the second heating chamber 10.

[0032] After the oil pump 14 starts, it extracts the heated heat transfer oil from the first heating chamber 9 of the rotating sleeve 5, and transports it through the connecting pipe 13 connected to the rotating ring 11 to the rotating head 12 at the end of the stirring rod 7. The oil then flows into the second heating chamber 10 of the stirring rod 7, and then back to the first heating chamber 9 of the rotating sleeve 5 through another connecting pipe 13, forming a forced heat transfer oil circulation loop. During this process, the rotating ring 11 and the rotating head 12 are rotatably connected to the rotating sleeve 5 and the stirring rod 7, respectively, ensuring that the circulation of the heat transfer oil is not affected when the rotating sleeve 5 and the stirring rod 7 rotate.

[0033] The oil pump 14 ensures a more uniform temperature between the rotating sleeve 5 and the stirring rod 7, eliminating localized temperature differences caused by poor natural convection and preventing over-drying or under-drying of some sludge, thus improving the stability of drying quality. It also accelerates the heat transfer rate of the heat transfer oil, allowing the sludge to absorb heat more quickly and evenly, further improving drying efficiency, shortening drying time, and reducing energy consumption. The circulation speed and flow rate of the heat transfer oil can be controlled by adjusting the flow rate and pressure of the oil pump 14, thereby flexibly adjusting the heating intensity to meet the drying needs of sludge with different properties and initial moisture contents.

[0034] Third Embodiment

[0035] Based on the first embodiment, the stirring mechanism 2 further includes a drive shaft 16, a driving gear 17, and a driven gear 18. The drive shaft 16 is horizontally rotatably connected to the support frame 1, and the axis of the drive shaft 16 is parallel to the axis of the rotating sleeve 5. The driving gear 17 is coaxially and fixedly connected to the drive shaft 16, and the driven gear 18 is coaxially and fixedly connected to the rotating sleeve 5. The driving gear 17 and the driven gear 18 mesh with each other. The stirring mechanism 2 also includes a driving pulley 19, a driven pulley 20, and a transmission belt 21. The driving pulley 19 is coaxially and fixedly connected to the drive shaft 16, the driven pulley 20 is coaxially and fixedly connected to the stirring rod 7, and the transmission belt 21 is disposed between the driving pulley 19 and the driven pulley 20. The stirring mechanism 2 also includes a drive motor 22, which is fixedly connected to the support frame 1, and the output end of the drive motor 22 is coaxially and fixedly connected to the drive shaft 16.

[0036] After the drive motor 22 starts, its output end drives the transmission shaft 16 to rotate, and the drive gear 17, which is coaxially fixed to the transmission shaft 16, rotates accordingly. The drive gear 17 meshes with the driven gear 18, thereby driving the rotating sleeve 5, which is coaxially fixed to the driven gear 18, to rotate. At the same time, the drive pulley 19, which is coaxially fixed to the transmission shaft 16, transmits power to the driven pulley 20, which is coaxially fixed to the stirring rod 7, through the transmission belt 21, causing the stirring rod 7 to rotate. By adjusting the gear ratio of the drive gear 17 to the driven gear 18, and the diameter ratio of the drive pulley 19 to the driven pulley 20, different rotational speeds of the rotating sleeve 5 and the stirring rod 7 can be achieved to meet different stirring and conveying requirements.

[0037] It is possible to precisely control the rotation speed of the rotating sleeve 5 and the stirring rod 7 by adjusting the transmission ratio according to the characteristics of the sludge (such as viscosity and moisture content), thereby achieving differentiated mixing and conveying. For example, for sludge with higher viscosity, the rotation speed can be reduced and the mixing force increased; for sludge with better fluidity, the rotation speed can be appropriately increased to accelerate the processing efficiency.

[0038] Fourth embodiment

[0039] Based on the first embodiment, a sealing groove 25 is provided on the side of the discharge pipe 24, a sealing slide plate 26 is slidably disposed in the sealing groove 25, a limit hole is provided on the side of the sealing slide plate 26, a screw hole is provided on the side of the discharge pipe 24, and a locking screw 27 is provided in the limit hole and the screw hole.

[0040] Before the sludge drying process begins, slide the sealing slide plate 26 along the sealing groove 25 on the side of the discharge pipe 24 to a suitable position, ensuring that the sealing slide plate 26 completely covers the discharge port. Then, screw the locking screw 27 into the limiting hole and screw hole to firmly fix the sealing slide plate 26. During the sludge drying process, the sealing slide plate 26 prevents the sludge from flowing out of the discharge pipe 24, ensuring that the sludge is continuously stirred, heated, and dried within the tank 4. After the sludge drying is complete, loosen the locking screw 27 and remove the sealing slide plate 26 from the sealing groove 25. After the sludge discharge is completed, the sealing slide plate 26 can be reset and fixed to prepare for the next drying process.

[0041] Fifth Embodiment

[0042] Based on the first embodiment, a solenoid valve is installed inside the discharge pipe 24. Before the sludge drying process begins, the solenoid valve is closed to completely seal the discharge channel and prevent sludge from flowing out of the discharge pipe 24 during the drying process. After the sludge drying is completed, the solenoid valve is opened, the discharge channel is opened, and the dried sludge is discharged from the discharge pipe 24 under the action of stirring force. During the discharge process, the discharge speed can also be controlled by adjusting the opening degree of the solenoid valve (such as partially or fully open). After the discharge is completed, the solenoid valve is closed again to prepare for the next drying process.

[0043] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A sludge dewatering treatment structure, characterized by, The system includes a support frame (1), a stirring mechanism (2), and a drying mechanism (3). The stirring mechanism (2) includes a tank (4), a rotating sleeve (5), guide blades (6), and a stirring rod (7). The tank (4) is fixedly connected to the support frame (1). The tank (4) has a cavity. The rotating sleeve (5) and the stirring rod (7) are both horizontally rotatably arranged in the cavity, and the axis of the rotating sleeve (5) coincides with the axis of the stirring rod (7). The guide blades (6) are horizontally rotatable. The spiral is fixedly installed on the side of the rotating sleeve (5). The drying mechanism (3) includes heat transfer oil and heating component (8). The rotating sleeve (5) is provided with a first heating chamber (9), and the stirring rod (7) is provided with a second heating chamber (10). The heat transfer oil is filled in the first heating chamber (9) and the second heating chamber (10), and the first heating chamber (9) and the second heating chamber (10) are connected. The heating component (8) is installed in the first heating chamber (9) for heating the heat transfer oil.

2. A sludge dewatering arrangement according to claim 1, wherein The drying mechanism (3) further includes a rotating ring (11), a rotating head (12), and a connecting pipe (13). The rotating ring (11) is rotatably disposed at the end of the rotating sleeve (5), the rotating head (12) is rotatably disposed at the end of the stirring rod (7), one end of the connecting pipe (13) is fixedly connected to the rotating ring (11) and communicates with the first heating chamber (9), and the other end of the connecting pipe (13) is fixedly connected to the rotating head (12) and communicates with the second heating chamber (10).

3. A sludge dewatering arrangement according to claim 2, wherein The drying mechanism (3) also includes an oil pump (14), which is fixedly connected to the tank (4). The input end of the oil pump (14) is connected to the first heating chamber (9), and the output end of the oil pump (14) is connected to one end of the connecting pipe (13). The other end of the connecting pipe (13) is connected to the second heating chamber (10).

4. A sludge dewatering structure as claimed in claim 1, wherein, The heating component (8) includes an electric heating coil (15), and several electric heating coils (15) are arranged in a matrix within the first heating cavity (9).

5. A sludge dewatering structure as claimed in claim 1, wherein, The stirring mechanism (2) further includes a drive shaft (16), a drive gear (17), and a driven gear (18). The drive shaft (16) is horizontally connected to the support frame (1) in a rotatable engagement, and the axis of the drive shaft (16) is parallel to the axis of the rotating sleeve (5). The drive gear (17) is coaxially fixedly connected to the drive shaft (16), and the driven gear (18) is coaxially fixedly connected to the rotating sleeve (5). The drive gear (17) and the driven gear (18) mesh with each other.

6. A sludge dewatering arrangement according to claim 5, wherein The stirring mechanism (2) further includes a driving pulley (19), a driven pulley (20) and a transmission belt (21). The driving pulley (19) is coaxially and fixedly connected to the transmission shaft (16). The driven pulley (20) is coaxially and fixedly connected to the stirring rod (7). The transmission belt (21) is arranged between the driving pulley (19) and the driven pulley (20).

7. A sludge dewatering structure as claimed in claim 5, wherein, The stirring mechanism (2) also includes a drive motor (22), which is fixedly connected to the support frame (1), and the output end of the drive motor (22) is fixedly connected to the transmission shaft (16) on the same axis.

8. A sludge dewatering structure as claimed in claim 1, wherein, The top of the tank (4) is provided with a feed inlet communicating with the cavity, and the bottom of the tank (4) is provided with a discharge outlet communicating with the cavity. A feed pipe (23) is fixedly installed at the port of the feed inlet, and a discharge pipe (24) is fixedly installed at the port of the discharge outlet.

9. The sludge drying treatment structure as described in claim 8, characterized in that, The discharge pipe (24) has a sealing groove (25) on its side, and a sealing slide plate (26) is slidably disposed in the sealing groove (25). The sealing slide plate (26) has a limit hole on its side, and a screw hole is provided on the side of the discharge pipe (24). A locking screw (27) is provided in the limit hole and the screw hole.

10. A sludge dewatering structure as claimed in claim 8, wherein, An electromagnetic valve is installed inside the discharge pipe (24).

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