A carousel type sludge drying apparatus

Abstract

The present application belongs to the technical field of environmental protection sludge treatment, and particularly relates to a rotary disc type sludge drying device, which comprises a shell, a hot air conveying mechanism, a rotary disc mechanism, a cloth mechanism and a material receiving mechanism. The rotary disc mechanism is located in the shell and below the outlet end of the hot air conveying mechanism. The rotary disc mechanism comprises a center column, a retainer, a flap, a rotary frame and a motor. A horizontal section and a folded section are connected head to tail on the outer wall of the center column. A first rotary shaft is fixedly installed on the side close to the center column along the radial direction of the center column. A rotary handle is fixedly installed on the first rotary shaft. A limiting arm is installed at the end of the rotary handle. The free end of the limiting arm is arranged in the annular groove. The rotary frame is rotatably installed in the shell. A second rotary shaft is fixedly installed at the end away from the center column. The second rotary shaft is rotatably installed on the rotary frame. The motor is fixedly installed on the shell and is in transmission connection with the rotary frame. The purpose of the present application is to solve the problem of low working efficiency of the existing drying device.

Description

Technical Field

[0001] This invention belongs to the field of environmental sludge treatment technology, specifically relating to a rotary sludge drying device. Background Technology

[0002] Urban sewage, water supply plants, and industrial wastewater treatment plants continuously discharge large amounts of sludge during the production process. The amount of sludge from sewage treatment plants accounts for approximately 0.3% to 0.5% of the treated volume (based on a moisture content of 97%). This sludge contains a large number of toxic and harmful substances, such as parasite eggs, pathogenic microorganisms, bacteria, synthetic organic matter, and heavy metal ions. If left untreated, it will cause secondary pollution. This sludge requires further treatment.

[0003] The process requires sludge drying. Traditional drying devices mostly use air drying or heating to remove a certain amount of moisture, reducing the water content to below 55%. However, when the sludge is dried on a rotating disc, a certain adhesion force is gradually generated between it and the disc. This means that when the sludge is removed after drying, it is usually scraped off with a scraper. Often, it is not completely removed in one scraping and multiple scrapings are required, resulting in a long removal time and low work efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a rotary sludge drying device to solve the problem of low working efficiency of existing drying devices.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A rotary sludge drying device, comprising:

[0007] case;

[0008] A hot air conveying mechanism, which is fixedly installed on the housing, with its outlet end located inside the housing;

[0009] A turntable mechanism, located inside the housing and below the outlet end of the hot air conveying mechanism, includes a central column, a retainer, a flap, a rotating frame, and a motor.

[0010] The central column is fixedly installed on the housing, and an annular groove with the ends connected is provided on the outer wall of the central column. The annular groove includes a horizontal section and a folded section with the ends connected.

[0011] The cage is rotatably mounted on the central column;

[0012] A first rotating shaft is fixedly installed on the side of the flap near the central column along the radial direction of the central column. A rotating handle is fixedly installed on the first rotating shaft, and a limit arm is installed at the end of the rotating handle.

[0013] The first rotating shaft is rotatably mounted on the retainer, and the free end of the limiting arm passes through the annular groove;

[0014] When the free end of the limiting arm is located within the horizontal section, the flap is in a horizontal state;

[0015] When the free end of the limiting arm is located within the folding section, the flap is in an inclined state;

[0016] The rotating frame is rotatably installed inside the housing. A second rotating shaft is fixedly installed at the end of the flap away from the central column. The second rotating shaft is coaxial with the first rotating shaft and is rotatably installed on the rotating frame.

[0017] The motor is fixedly mounted on the housing and is connected to the rotating frame via a transmission.

[0018] A sludge-laying mechanism, which is installed inside the housing and located between the hot air conveying mechanism and the turntable mechanism, is used to lay sludge on the flip plate.

[0019] The receiving mechanism is installed on the housing and located below the turntable mechanism. It is used to receive the sludge that falls off after the drying process is completed and the flip plate is overturned.

[0020] Furthermore, the folding section includes two inclined transition sections connected in a V-shape, with the free end of each transition section connected to a horizontal section. This structural design, through the V-shaped transition sections, achieves the offset of the limiting arm, thereby driving the rotation of the flap. It is simple in structure, easy to use, and highly practical.

[0021] Furthermore, the transition section at the front of the folding section is wavy and inclined. This structural design, by setting the transition section at the front to be wavy, makes the angular velocity of the flip plate non-linear when the limiting arm passes through the transition section at the front. This causes the flip plate to vibrate during the process, making it easier for the dried sludge on the flip plate to fall off, thus improving its practicality.

[0022] Furthermore, a middle section is provided between the two transition sections. This structural design, with the middle section and the two transition sections together forming a folding section, allows the flap to maintain its maximum flipping angle for a longer period of time, resulting in more thorough sludge removal and greater practicality.

[0023] Furthermore, the middle section is wavy. This structural design, by setting the middle section to be wavy, causes the flipping angle of the flap to change back and forth as the limiting arm passes through the middle section, creating a shaking motion. This makes it easier for the dried sludge on the flap to fall off, making it highly practical.

[0024] Furthermore, the flaps are fan-shaped and there are multiple flaps, which are connected end-to-end and distributed circumferentially along the central column. This structural design, through multiple fan-shaped flaps connected end-to-end and distributed circumferentially along the central column, receives the sludge distributed by the feeding mechanism. This avoids the problem that, due to the discontinuity of the flaps, if the feeding mechanism is not used to intermittently feed the turntable mechanism, some sludge will not be received by the flaps and will fall directly to the bottom of the shell, thus failing to be dried. This design is highly practical and also improves the drying efficiency of the drying device.

[0025] Furthermore, the upper surface of the flap is equipped with a surrounding plate on the side near the central column, the side near the rotating frame, and the side that curves upwards after the flap is flipped. This structural design uses the surrounding plates to block sludge falling onto the flap, preventing sludge from falling off the flap before it flips. After the flap flips, the sludge can slide off from the side that is flipped downwards, where there is no surrounding plate, allowing the sludge to slide off smoothly. It should be noted that since the flaps are connected end to end, the side of the flap that is not flipped without a surrounding plate is blocked by the surrounding plate on the side that curves upwards after the flap flips, preventing sludge from sliding off from this point.

[0026] Furthermore, the upward-curving side of the flip panel after flipping tilts inwards from top to bottom, while the downward-curving side tilts outwards from top to bottom. This structural design, through the corresponding tilting of the edges of the flip panels, ensures that adjacent flip panels are in an overlapping state when not flipped, preventing gaps between them and allowing the flip panels to flip smoothly without interference from other flip panels that could prevent them from flipping.

[0027] Further specifying, the material distribution mechanism includes a material distribution tray and a plurality of material distribution tubes. The material distribution tubes are located below the material distribution tray and communicate with it, and the number of the plurality of material distribution tubes gradually increases from the inside to the outside. This structural design, with the material distribution tubes gradually increasing from the inside to the outside, ensures that the amount of sludge received by the flap gradually increases from the inside to the outside, adapting to the fan-shaped structure of the flap, thereby ensuring the uniformity of the sludge received by the flap, resulting in better drying effect and strong practicality.

[0028] Further specifying, a through groove is formed on the outer wall of the shell, the receiving mechanism passes through the through groove, and a soft rubber sheet is fixedly installed in the shell within the through groove, the soft rubber sheet being positioned above the receiving mechanism. This structural design, through the soft rubber sheet, partially blocks the outlet of the dried sludge, effectively sealing off the hot air transported by the hot air conveying mechanism into the shell, thereby improving the utilization efficiency of the hot air and demonstrating strong practicality.

[0029] The invention employing the above technical solution has the following advantages:

[0030] 1. Through the coordinated operation of the central column, horizontal section, folding section and flap, the sludge drying process is automatically completed, improving the drying efficiency;

[0031] 2. By setting the transition section at the front to a wave shape, the angular velocity of the flap turning when the limiting arm passes through the transition section at the front is non-linear, which causes the flap to vibrate during the process, making it easier for the dried sludge on the flap to fall off, thus making it more practical.

[0032] 3. The folding section is formed by the middle section and two transition sections, which allows the flap to maintain its maximum flipping angle for a longer time, resulting in more thorough sludge removal and strong practicality.

[0033] 4. Multiple fan-shaped flaps connected end to end and distributed around the central column are used to receive the sludge distributed by the feeding mechanism. This avoids the problem that if the feeding mechanism is not used to intermittently feed the turntable mechanism, some sludge will not be received by the flaps and will fall directly to the bottom of the shell and cannot be dried. This is highly practical and also improves the drying efficiency of the drying device.

[0034] 5. The sludge falling onto the flip plate is blocked by the surrounding board, preventing the sludge from falling off the flip plate before it flips over. After the flip plate flips over, the sludge on the flip plate can slide down from the lower side after the flip plate flips over, where there is no surrounding board, so the sludge can slide down smoothly. It should be noted that since the flip plates are connected end to end, the side of the flip plate that has not been flipped over without a surrounding board is blocked by the surrounding board on the upper side of the flip plate after it flips over, which can prevent the sludge from sliding down from this point.

[0035] 6. By tilting the edges of the flip panels accordingly, the two adjacent flip panels are in an overlapping state when they are not flipped. This ensures that there are no gaps between the two flip panels when they are not flipped, allowing the flip panels to flip smoothly without interference from other flip panels, which would prevent the flip panels from failing to flip.

[0036] 7. By gradually increasing the number of feed pipes from the inside out, the amount of sludge collected by the flap gradually increases from the inside out, which is compatible with the fan-shaped structure of the flap, thereby ensuring the uniformity of the sludge collected on the flap, resulting in better drying effect and strong practicality. Attached Figure Description

[0037] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0038] Figure 1 This is a schematic diagram of the structure of an embodiment of a rotary sludge drying device according to the present invention;

[0039] Figure 2This is a schematic diagram of the structure of a rotary sludge drying device according to an embodiment of the present invention after removing the shell;

[0040] Figure 3 This is a schematic diagram of the rotary disc mechanism in an embodiment of the rotary disc sludge drying device of the present invention. Figure 1 ;

[0041] Figure 4 This is a schematic diagram of the rotary disc mechanism in an embodiment of the rotary disc sludge drying device of the present invention. Figure 2 ;

[0042] Figure 5 This is a schematic diagram of the central column portion in an embodiment of a rotary sludge drying device of the present invention;

[0043] Figure 6 This is a schematic diagram of the flap section in an embodiment of a rotary sludge drying device of the present invention;

[0044] Figure 7 for Figure 6 Enlarged structural diagram at point A;

[0045] The symbols for the main components are explained below:

[0046] Shell 1, Soft rubber sheet 10

[0047] Hot air conveying mechanism 2

[0048] Turntable mechanism 3, center column 31, horizontal section 311, middle section 312, transition section 313, cage 32.

[0049] Flip plate 33, enclosure plate 330, first rotating shaft 331, second rotating shaft 3310, rotating handle 332, limiting arm 333.

[0050] Rotating frame 34, motor 35

[0051] Fabric mechanism 4, fabric tray 41, fabric tube 42,

[0052] Material receiving mechanism 5. Detailed Implementation

[0053] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0054] like Figures 1 to 7 As shown, a rotary sludge drying device of the present invention includes:

[0055] Casing 1;

[0056] Hot air conveying mechanism 2 is fixedly installed on housing 1, and the outlet end of hot air conveying mechanism 2 is located inside housing 1;

[0057] The turntable mechanism 3 is located inside the housing 1 and below the outlet end of the hot air conveying mechanism 2. The turntable mechanism 3 includes a central column 31, a retainer 32, a flap 33, a rotating frame 34, and a motor 35.

[0058] like Figure 5 As shown, the central column 31 is fixedly installed on the housing 1. An annular groove with the ends connected is provided on the outer wall of the central column 31. The annular groove includes a horizontal section 311 with the ends connected and a folded section.

[0059] The cage 32 is rotatably mounted on the central column 31;

[0060] like Figure 6 and Figure 7 As shown, a first rotating shaft 331 is fixedly installed on the side of the flap 33 near the central column 31 along the radial direction of the central column 31. A rotating handle 332 is fixedly installed on the first rotating shaft 331, and a limit arm 333 is installed at the end of the rotating handle 332.

[0061] The first rotating shaft 331 is rotatably mounted on the retainer 32, and the free end of the limiting arm 333 passes through the annular groove;

[0062] When the free end of the limiting arm 333 is within the horizontal section 311, the flap 33 is in a horizontal state;

[0063] When the free end of the limiting arm 333 is located within the folding section, the flap 33 is in an inclined state;

[0064] The rotating frame 34 is rotatably installed inside the housing 1. The second rotating shaft 3310 is fixedly installed at the end of the flap 33 away from the central column 31. The second rotating shaft 3310 is coaxial with the first rotating shaft 331 and is rotatably installed on the rotating frame 34.

[0065] The motor 35 is fixedly mounted on the housing 1 and is connected to the rotating frame 34 for transmission.

[0066] The sludge spreading mechanism 4 is installed inside the housing 1 and located between the hot air conveying mechanism 2 and the turntable mechanism 3, and is used to spread sludge on the flip plate 33.

[0067] The receiving mechanism 5 is installed on the housing 1 and located below the turntable mechanism 3. It is used to receive the sludge that falls off after the drying process is completed and the flip plate 33 is flipped.

[0068] like Figure 5 As shown, the folding section includes two inclined transition sections 313 connected in a V-shape, with the free end of each transition section 313 connected to the horizontal section 311. In practice, the folding section can also be arc-shaped. In this embodiment, the V-shaped transition section 313 offsets the limiting arm 333, thereby driving the rotation of the flap 33. The structure is simple, easy to use, and highly practical.

[0069] The transition section 313 at the front of the folding section is wavy and inclined. In practice, the transition section 313 at the front can also be set as an inclined straight line, depending on the actual situation. In this embodiment, by setting the transition section 313 at the front as wavy, the angular velocity of the flip plate 33 is non-linear when the limiting arm 333 passes through the transition section 313 at the front. This causes the flip plate 33 to vibrate to a certain extent during the process, making it easier for the dried sludge on the flip plate 33 to fall off, which is more practical.

[0070] like Figure 5 As shown, a middle section 312 is provided between the two transition sections 313. In practice, the middle section 312 can also be set horizontally depending on the actual situation. In this embodiment, the middle section 312 and the two transition sections 313 together form a folding section, so that the flap 33 can be maintained at the maximum flipping angle for a longer time, so that the sludge falls off more thoroughly, which is more practical.

[0071] The middle section 312 is wavy. By setting the middle section 312 to be wavy, when the limiting arm 333 passes through the middle section 312, the flip angle of the corresponding flap 33 changes back and forth, forming a shaking, which makes it easier for the dried sludge on the flap 33 to fall off, making it more practical.

[0072] like Figure 3 As shown, the flaps 33 are fan-shaped and there are multiple flaps 33 connected end to end and distributed around the central column 31. In practice, depending on the actual situation, an intermittent feeding method can also be adopted to avoid the problem of sludge falling directly to the bottom of the shell 1 and not being able to be dried. In this embodiment, the fan-shaped flaps 33 connected end to end and distributed around the central column 31 receive the sludge distributed by the feeding mechanism 4. This avoids the problem that if the feeding mechanism 4 does not use the intermittent feeding of the turntable mechanism 3, some sludge will not be received by the flaps 33 and will fall directly to the bottom of the shell 1 and not be dried. This is highly practical and also improves the drying efficiency of the drying device.

[0073] like Figure 4 As shown, the upper surface of the flip plate 33 is equipped with a surrounding plate 330 on the side near the central column 31, the side near the rotating frame 34, and the side of the flip plate 33 that curves upward after flipping. The surrounding plate 330 blocks the sludge falling onto the flip plate 33, preventing the sludge from falling off the flip plate 33 before it flips. After the flip plate 33 flips, the sludge on the flip plate 33 can slide off from the side of the flip plate 33 that is not equipped with a surrounding plate 330, where the flip plate 33 is not equipped with a surrounding plate 330. It should be noted that since the flip plates 33 are connected end to end, the side of the flip plate 33 that is not equipped with a surrounding plate 330 before flipping is blocked by the surrounding plate 330 on the side of the flip plate 33 that curves upward after flipping, which can prevent the sludge from sliding off from this side.

[0074] like Figure 6 As shown, after the flap 33 is flipped, the upward-curving side tilts inward from top to bottom, and the downward-curving side tilts outward from top to bottom. In practice, elastic structures such as elastic strips can also be provided on both sides of the flap 33 to ensure that there are no gaps between adjacent flaps 33 when they are not flipped, allowing the flaps 33 to flip smoothly without interference from other flaps 33. In this embodiment, the corresponding inclination of the edges of the flaps 33 ensures that adjacent flaps 33 are in an overlapping state when not flipped, thus ensuring that there are no gaps between them and allowing the flaps 33 to flip smoothly without interference from other flaps 33.

[0075] like Figure 2 As shown, the material distribution mechanism 4 includes a material distribution disc 41 and several material distribution pipes 42. The material distribution pipes 42 are located below the material distribution disc 41 and are connected to the material distribution disc 41. The number of material distribution pipes 42 gradually increases from the inside to the outside. By arranging the material distribution pipes 42 from the inside to the outside, the amount of sludge received by the flap 33 gradually increases from the inside to the outside, which is compatible with the fan-shaped structure of the flap 33. This ensures the uniformity of the sludge received on the flap 33, resulting in better drying effect and stronger practicality.

[0076] like Figure 1 As shown, a through groove is provided on the outer wall of the housing 1, and the receiving mechanism 5 passes through the through groove. A soft rubber sheet 10 is fixedly installed in the through groove of the housing 1, and the soft rubber sheet 10 is located above the receiving mechanism 5. The soft rubber sheet 10 blocks the outlet of the dried sludge to a certain extent, thereby blocking the hot air delivered to the inside of the housing 1 by the hot air conveying mechanism 2 as much as possible, improving the utilization efficiency of hot air, and is highly practical.

[0077] In this embodiment, when in use, the motor 35 is started, and the motor 35 drives the rotating frame 34 to rotate, which in turn drives the flap 33 to rotate at a constant speed along the central column 31.

[0078] During this process, the material feeding mechanism 4 feeds material onto the horizontally positioned flap 33, while the hot air conveying mechanism 2 delivers hot air to the turntable mechanism 3 to dry the sludge on the flap 33.

[0079] As the motor 35 rotates the rotating frame 34, it drives the flap 33 carrying sludge to rotate along the central column 31 until the limiting arm 333 enters the transition section 313 in the folding section from the horizontal section 311. The interaction between the transition section 313 and the limiting arm 333 drives the limiting arm 333 to rotate relative to the first rotating shaft 331, thereby changing the distance difference in the horizontal height between the limiting arm 333 and the first rotating shaft 331. This causes the corresponding flap 33 to rotate counterclockwise around the first rotating shaft 331, so that the sludge on the flap 33 slides from the side of the flap 33 where there is no surrounding plate 330 to the receiving mechanism 5.

[0080] The rotating frame 34 continues to rotate until the limiting arm 333 enters the transition section 313 at the rear of the folding section. At this time, the flip plate 33 gradually flips in the opposite direction until the limiting arm 333 re-enters the horizontal section 311. At this time, the flip plate 33 re-enters the horizontal state, completing the preparation work for the next material feeding of the material receiving mechanism 4.

[0081] The rotary sludge drying device provided by the present invention has been described in detail above. The specific embodiments are provided only to help understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A rotary sludge drying device, characterized in that: include: Shell (1); Hot air conveying mechanism (2), the hot air conveying mechanism (2) is fixedly installed on the housing (1), and the outlet end of the hot air conveying mechanism (2) is located inside the housing (1); Turntable mechanism (3), the turntable mechanism (3) is located inside the housing (1) and below the outlet end of the hot air conveying mechanism (2), the turntable mechanism (3) includes a central column (31), a retainer (32), a flap (33), a rotating frame (34) and a motor (35). The central column (31) is fixedly installed on the housing (1). The outer wall of the central column (31) is provided with an annular groove that is connected end to end. The annular groove includes a horizontal section (311) and a folded section that are connected end to end. The cage (32) is rotatably mounted on the central column (31); The flap (33) is fixedly mounted with a first rotating shaft (331) along the radial direction of the central column (31) on the side near the central column (31). A rotating handle (332) is fixedly mounted on the first rotating shaft (331), and a limit arm (333) is installed at the end of the rotating handle (332). The first rotating shaft (331) is rotatably mounted on the retainer (32), and the free end of the limiting arm (333) passes through the annular groove; When the free end of the limiting arm (333) is located within the horizontal section (311), the flap (33) is in a horizontal state; When the free end of the limiting arm (333) is located within the folding section, the flap (33) is in an inclined state; The rotating frame (34) is rotatably installed inside the housing (1). The flap (33) is fixedly installed with a second rotating shaft (3310) at one end away from the central column (31). The second rotating shaft (3310) is coaxial with the first rotating shaft (331). The second rotating shaft (3310) is rotatably installed on the rotating frame (34). The motor (35) is fixedly mounted on the housing (1) and is connected to the rotating frame (34) for transmission. The sludge spreading mechanism (4) is installed inside the housing (1) and located between the hot air conveying mechanism (2) and the turntable mechanism (3) for spreading sludge on the flip plate (33); The receiving mechanism (5) is installed on the housing (1) and located below the turntable mechanism (3) to receive the sludge that falls off after the drying is completed and the flip plate (33) is flipped. The folding section includes two inclined transition sections (313), which are connected in a V-shape, and the free end of the transition section (313) is connected to the horizontal section (311). The transition section (313) at the front of the folding section is wavy and inclined.

2. The rotary sludge drying device according to claim 1, characterized in that: A middle section (312) is provided between the two transition sections (313).

3. The rotary sludge drying device according to claim 2, characterized in that: The middle section (312) is wavy.

4. The rotary sludge drying device according to claim 1, characterized in that: The flaps (33) are fan-shaped and there are multiple flaps (33) connected end to end and distributed around the central column (31).

5. The rotary sludge drying device according to claim 4, characterized in that: The upper end face of the flip plate (33) is provided with a surrounding plate (330) on the side near the central column (31), the side near the rotating frame (34), and the side that is tilted upward after the flip plate (33) is flipped.

6. The rotary sludge drying device according to claim 4, characterized in that: After the flip plate (33) is flipped over, the side that curves upwards tilts inwards from top to bottom, and the side that curves downwards tilts outwards from top to bottom.

7. A rotary sludge drying device according to claim 4, characterized in that: The fabric feeding mechanism (4) includes a fabric feeding tray (41) and a plurality of fabric feeding tubes (42). The fabric feeding tubes (42) are located below the fabric feeding tray (41) and are connected to the fabric feeding tray (41). The number of the plurality of fabric feeding tubes (42) gradually increases from the inside to the outside.

8. The rotary sludge drying device according to claim 1, characterized in that: A through groove is provided on the outer wall of the housing (1), and the receiving mechanism (5) passes through the through groove. A soft rubber sheet (10) is fixedly installed in the through groove of the housing (1), and the soft rubber sheet (10) is located above the receiving mechanism (5).

Images