Sludge drying device based on low-temperature steam

Abstract

The utility model relates to the field of sludge drying, and discloses a sludge drying device based on low-temperature steam, which comprises a placing frame, a sludge drying barrel is fixedly connected to the top surface of the placing frame, and a low-temperature steam generator is fixedly communicated with the top surface of the sludge drying barrel. A feeding hopper is fixedly communicated with the top surface of the sludge drying barrel and located on one side of the low-temperature steam generator, discharging pipes are symmetrically and fixedly communicated with the bottom surface of the sludge drying barrel, an overturning assembly is arranged in the sludge drying barrel, and the overturning assembly comprises a driving motor fixedly connected to the bottom surface of the sludge drying barrel; the surfaces of the opposite inner walls of the sludge drying barrel are rotationally connected with connecting discs, and a material overturning barrel is fixedly connected between the opposite surfaces of the two connecting discs. According to the sludge drying device, through the arrangement of the stirring assembly, continuous and uniform stirring of the sludge in the drying process is achieved, the contact area of the sludge and steam is increased, and the drying efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sludge drying, especially a sludge drying device based on low-temperature steam. BACKGROUND

[0002] Sludge is a solid or semi-solid waste produced during sewage treatment, containing a large amount of water and harmful substances. In order to reduce environmental pollution, sludge needs to be dried to reduce its water content, facilitating subsequent transportation, storage and disposal.

[0003] At present, there are various sludge drying devices on the market, among which the drying device based on steam is a common type. These devices include a sludge container for containing sludge to be dried and a steam generator for generating steam to heat and dry the sludge.

[0004] The existing sludge drying device is prone to clumping during the drying process, resulting in uneven drying. At the same time, the contact area between the sludge and the steam is limited, resulting in low drying efficiency. Therefore, a sludge drying device based on low-temperature steam is proposed to solve the above problems. SUMMARY

[0005] To make up for the above shortcomings, the utility model provides a sludge drying device based on low-temperature steam, aiming to improve the problem of uneven drying caused by clumping of sludge during the drying process of the existing sludge drying device in the prior art, and the low drying efficiency caused by the limited contact area between the sludge and the steam.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a sludge drying device based on low-temperature steam, comprising a placing rack, the top surface of the placing rack is fixedly connected with a sludge drying barrel, the top surface of the sludge drying barrel is fixedly connected with a low-temperature steam generator, the top surface of the sludge drying barrel and located on one side of the low-temperature steam generator is fixedly connected with a feeding hopper, the bottom surface of the sludge drying barrel is fixedly connected with a discharging pipe, the inside of the sludge drying barrel is provided with a turning assembly, the turning assembly comprises a driving motor fixedly connected to the bottom surface of the sludge drying barrel, the opposite inner wall surfaces of the sludge drying barrel are rotatably connected with connecting discs, the opposite surfaces of the two connecting discs are fixedly connected with a turning barrel, the upper end surfaces of the turning barrel are uniformly provided with discharge ports, the lower end surfaces of the turning barrel are uniformly provided with feeding ports, the opposite surfaces of the two connecting discs are fixedly connected with a conveying auger, and the outer wall surface of the turning barrel is provided with a cleaning assembly.

[0007] As a further description of the above technical solution: the cleaning assembly comprises a connecting plate symmetrically fixedly connected to the outer wall surface of the material turning barrel, opposite surfaces of the connecting plate are fixedly connected with scrapers, the surfaces of the connecting plate are uniformly provided with material leakage openings, and a stirring shaft is formed between the two material leakage openings;

[0008] As a further description of the above technical solution: the scraper is in a U-shaped structure, and the scraper abuts against the inner wall surface of the sludge drying barrel;

[0009] As a further description of the above technical solution: the contact surface of the scraper and the inner wall of the sludge drying barrel is made of wear-resistant and corrosion-resistant material, and the surface of the conveying auger blade is uniformly provided with convex textures;

[0010] As a further description of the above technical solution: the output shaft of the driving motor is fixedly connected to the bottom surface of the connecting disc, and the conveying auger is arranged in the interior of the material turning barrel;

[0011] As a further description of the above technical solution: the material turning barrel is arranged in the interior of the sludge drying barrel, and the steam generated by the low-temperature steam generator is uniformly distributed to the interior of the sludge drying barrel through pipelines;

[0012] As a further description of the above technical solution: the interior of the discharging pipe is provided with an electromagnetic valve, and the outer wall of the sludge drying barrel is provided with a heat preservation layer;

[0013] As a further description of the above technical solution: the surface of the conveying auger blade is uniformly covered with a wear-resistant and corrosion-resistant coating.

[0014] The utility model has the advantages of the following beneficial effects:

[0015] 1、The utility model discloses a sludge drying device based on low-temperature steam, which comprises a material turning barrel, a driving motor, a conveying auger, a cleaning assembly and a low-temperature steam generator.

[0016] 2、The utility model discloses a sludge drying device based on low-temperature steam, which comprises a material turning barrel, a driving motor, a conveying auger, a cleaning assembly and a low-temperature steam generator. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A three-dimensional schematic view of the sludge drying device based on low-temperature steam is provided.

[0018] Figure 2 A structure schematic view of a turning assembly of a sludge drying device based on low-temperature steam is provided for the utility model;

[0019] Figure 3 A structure schematic view of a cleaning assembly of a sludge drying device based on low-temperature steam is provided for the utility model.

[0020] Legend:

[0021] 1, placing rack; 2, sludge drying barrel; 3, low-temperature steam generator; 4, upper feeding hopper; 5, lower discharging pipe; 6, turning assembly; 61, driving motor; 62, connecting disc; 63, turning barrel; 64, discharging port; 65, feeding port; 66, conveying auger; 7, cleaning assembly; 71, connecting plate; 72, scraper; 73, discharging port; 74, stirring shaft. Specific implementation

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Reference Figure 1 - Figure 3This utility model provides an embodiment of a sludge drying device based on low-temperature steam, comprising a placement rack 1, a sludge drying barrel 2 fixedly connected to the top surface of the placement rack 1, a low-temperature steam generator 3 fixedly connected to the top surface of the sludge drying barrel 2, a feeding hopper 4 fixedly connected to the top surface of the sludge drying barrel 2 and located on one side of the low-temperature steam generator 3, and feeding pipes 5 symmetrically fixedly connected to the bottom surface of the sludge drying barrel 2. A turning assembly 6 is provided inside the sludge drying barrel 2, the turning assembly 6 including components fixedly connected to the bottom surface of the sludge drying barrel 2. The drive motor 61 and the sludge drying tank 2 are rotatably connected to the relative inner wall surfaces of the two connecting plates 62. A turning bucket 63 is fixedly connected between the relative surfaces of the two connecting plates 62. The upper surface of the turning bucket 63 has a uniformly distributed discharge port 64, and the lower surface of the turning bucket 63 has a uniformly distributed feed port 65. A conveying auger 66 is fixedly connected between the relative surfaces of the two connecting plates 62. The sludge first enters the sludge drying tank 2 through the feeding hopper 4. At this time, the low-temperature steam generator 3 starts to work, and the generated steam is evenly distributed to the sludge drying tank 2 through the pipe. Inside, the sludge undergoes low-temperature drying. Simultaneously, the drive motor 61 starts, its output shaft rotating the connecting disc 62. The rotation of the connecting disc 62 further drives the rotation of the tilting bucket 63 and the conveying auger 66. During the rotation of the tilting bucket 63, the discharge port 64 on its upper surface and the inlet port 65 on its lower surface periodically come into contact with the sludge. When the sludge enters the inlet port 65, it is carried to the discharge port 64 and discharged as the conveying auger 66 rotates. Subsequently, the sludge returns to the sludge drying bucket 2, thus achieving… The sludge is constantly turned over inside the sludge drying tank 2. This turning method ensures that the sludge can fully contact the steam, which improves the drying efficiency. The outer wall surface of the turning tank 63 is equipped with a cleaning component 7. The output shaft of the drive motor 61 is fixedly connected to the bottom surface of the connecting plate 62. The conveying auger 66 is set inside the turning tank 63. The steam generated by the low temperature steam generator 3 is evenly distributed into the interior of the sludge drying tank 2 through the pipeline. The surface of the blades of the conveying auger 66 is evenly covered with a wear-resistant and corrosion-resistant coating.

[0024] Reference Figure 1 - Figure 3The cleaning assembly 7 comprises a connecting plate 71 fixedly connected to the outer wall surface of the turnover barrel 63, the opposite surfaces of the connecting plate 71 are fixedly connected with scrapers 72, the surfaces of the connecting plate 71 are uniformly provided with material leakage openings 73, and the two material leakage openings 73 form a stirring shaft 74. The scraper 72 in the cleaning assembly 7 continuously scrapes the inner wall of the sludge drying barrel 2 with the rotation of the turnover barrel 63, the U-shaped structure and wear-resistant and corrosion-resistant material of the scraper 72 ensure that the sludge can be effectively prevented from adhering to the inner wall, and through the structure of the material leakage opening 73 and the stirring shaft 74, the stirring effect on the sludge is further enhanced. When the sludge is dried to a certain degree, the electromagnetic valve inside the discharge pipe 5 is opened by control, and the dried sludge can be smoothly discharged from the discharge pipe 5 with the assistance of the connecting plate 71 and the scraper 72. The scraper 72 is in a U-shaped structure, and the scraper 72 abuts against the inner wall surface of the sludge drying barrel 2. The contact surface between the scraper 72 and the inner wall of the sludge drying barrel 2 is made of wear-resistant and corrosion-resistant material. The surface of the conveying auger 66 is uniformly provided with raised textures. The inside of the discharge pipe 5 is provided with an electromagnetic valve. The outer wall of the sludge drying barrel 2 is provided with a heat preservation layer.

[0025] Working principle: in use, the sludge first enters the sludge drying barrel 2 from the feeding hopper 4. At this time, the low-temperature steam generator 3 starts to work, and the generated steam is uniformly distributed to the inside of the sludge drying barrel 2 through the pipeline to dry the sludge at low temperature. At the same time, the driving motor 61 is started, and the output shaft drives the connecting disc 62 to rotate, which further drives the rotation of the turnover barrel 63 and the conveying auger 66. During the rotation of the turnover barrel 63, the discharge port 64 on the upper end surface and the feeding port 65 on the lower end surface will periodically contact the sludge. When the sludge enters the feeding port 65, the sludge will be brought to the discharge port 64 and discharged with the rotation of the conveying auger 66. Subsequently, the sludge returns to the sludge in the sludge drying barrel 2, so that the sludge is continuously turned over in the sludge drying barrel 2. This turning mode ensures that the sludge can be fully contacted with the steam, thereby improving the drying efficiency. The blades of the conveying auger 66 not only play a role in assisting the turning of the sludge, but also further crush and stir the sludge through the raised textures uniformly arranged on the surface thereof, which helps the water in the sludge to evaporate faster. In addition, the scraper 72 in the cleaning assembly 7 continuously scrapes the inner wall of the sludge drying barrel 2 with the rotation of the turnover barrel 63. The U-shaped structure and wear-resistant and corrosion-resistant material of the scraper 72 ensure that the sludge can be effectively prevented from adhering to the inner wall, and through the structure of the material leakage opening 73 and the stirring shaft 74, the stirring effect on the sludge is further enhanced. When the sludge is dried to a certain degree, the electromagnetic valve inside the discharge pipe 5 is opened by control, and the dried sludge can be smoothly discharged from the discharge pipe 5 with the assistance of the connecting plate 71 and the scraper 72.

[0026] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, the made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A low-temperature steam-based sludge drying device comprising a placing rack (1), characterized in that: The top surface of the rack (1) is fixedly connected with a sludge drying barrel (2), the top surface of the sludge drying barrel (2) is fixedly connected with a low-temperature steam generator (3), the top surface of the sludge drying barrel (2) and on one side of the low-temperature steam generator (3) is fixedly connected with an upper hopper (4), the bottom surface of the sludge drying barrel (2) is fixedly connected with a lower discharge pipe (5) symmetrically, and the inside of the sludge drying barrel (2) is provided with a turnover assembly (6). The turnover assembly (6) comprises a driving motor (61) fixedly connected to the bottom surface of the sludge drying barrel (2), opposite inner wall surfaces of the sludge drying barrel (2) are rotatably connected with connecting discs (62), the opposite surfaces of the two connecting discs (62) are fixedly connected with a turnover barrel (63), the upper end surfaces of the turnover barrel (63) are uniformly provided with discharge ports (64), the lower end surfaces of the turnover barrel (63) are uniformly provided with feeding ports (65), and the opposite surfaces of the two connecting discs (62) are fixedly connected with a conveying auger (66).

2. A low temperature steam based sludge dewatering device as claimed in claim 1, wherein: The cleaning assembly (7) comprises connecting plates (71) fixedly connected to the outer wall surfaces of the turnover barrel (63) symmetrically, the opposite surfaces of the connecting plates (71) are fixedly connected with scrapers (72), the surfaces of the connecting plates (71) are uniformly provided with material leakage ports (73), and the two material leakage ports (73) form a stirring shaft (74).

3. A low temperature steam based sludge dewatering device as claimed in claim 2, wherein: The scraper (72) has a U-shaped structure, and the scraper (72) abuts against the inner wall surface of the sludge drying barrel (2).

4. A low temperature steam based sludge dewatering device as claimed in claim 1, wherein: The output shaft of the driving motor (61) is fixedly connected to the bottom surface of the connecting disc (62), and the conveying auger (66) is arranged in the inside of the turnover barrel (63).

5. A low temperature steam based sludge dewatering device as claimed in claim 1, wherein: The turnover barrel (63) is arranged in the inside of the sludge drying barrel (2), and the steam generated by the low-temperature steam generator (3) is uniformly distributed to the inside of the sludge drying barrel (2) through a pipeline.

6. A low temperature steam based sludge dewatering device as claimed in claim 2, wherein: The contact surfaces of the scraper (72) and the inner wall of the sludge drying barrel (2) are made of wear-resistant and corrosion-resistant materials, and the blade surfaces of the conveying auger (66) are uniformly provided with convex textures.

7. A low temperature steam based sludge dewatering device as claimed in claim 1, wherein: The inside of the discharge pipe (5) is provided with an electromagnetic valve, and the outer wall of the sludge drying barrel (2) is provided with a heat preservation layer.

8. A low temperature steam based sludge dewatering device as claimed in claim 1, wherein: The blade surfaces of the conveying auger (66) are uniformly covered with a wear-resistant and corrosion-resistant coating.

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