Drying device for sludge dewatering treatment

Abstract

The utility model belongs to the field of sludge treatment, and particularly relates to a drying device for sludge dewatering treatment, which comprises a drying box, a feeding end seat for inputting sludge and a discharging end seat for discharging dried sludge are mounted on the drying box, and a heat supply device for providing sludge drying hot air is mounted on the side wall of the drying box; the conveying mechanism comprises conveying tables which are arranged in a laminated mode, roll shafts connected with the output end of the driving device are arranged in the conveying tables, the outer walls of the roll shafts are sleeved with a conveying belt, and sludge to be dried is conveyed on the conveying belt; sludge containing water is input into the drying box, layered crushing and drying are conducted through a snake-shaped sludge conveying channel composed of the upper-layer conveying belt, the middle-layer conveying belt and the lower-layer conveying belt through cooperation of the conveying mechanism and the sludge scraping mechanism, the sludge drying time is prolonged through reasonable space design, and the problem that the drying effect is affected due to sludge caking and stacking is solved; heat provided by hot air released by the heat supply device is fully utilized, and the problem of heat waste is solved.

Description

Technical Field

[0001] The utility model relates to the field of sludge treatment, in particular to a drying device for sludge dehydration treatment. Background Art

[0002] Sludge dehydration refers to treating sludge with high moisture content in a certain way to reduce its moisture content so that it is easy to handle, transport and dispose of. Sludge dehydration by mechanical dehydration produces mud cake, which still contains 10% to 15% moisture and needs to be dried by heating and drying.

[0003] The existing drying method is to place the mud cake containing moisture directly into a drying box for drying. As the mud cake accumulates in the drying box, the sludge on the surface is quickly dried to form a hard shell, and the sludge inside receives heat indirectly, resulting in low heat utilization efficiency of the accumulated sludge, and the drying degree inside and outside is often different, which affects the drying efficiency. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In order to solve the technical problems existing in the background technology, the utility model proposes a drying device for sludge dehydration treatment, which uses a transmission mechanism layered arrangement to form a serpentine channel to assist sludge transmission, and is combined with a sludge scraping mechanism to perform multi-layer scraping and crushing of the sludge, thereby improving the sludge drying effect.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a drying device for sludge dehydration treatment, comprising a drying box, on which a feed end seat for inputting sludge and a discharge end seat for discharging dried sludge are installed, and a heating device for providing hot air for sludge drying is installed on the side wall;

[0008] The transmission mechanism comprises a stacked transmission platform, wherein the transmission platform has a built-in roller connected to the output end of the driving device, and the outer wall of the roller is provided with a transmission belt, and the sludge to be dried is transmitted on the transmission belt;

[0009] The scraping mechanism includes a suspension arranged at the rear of the transmission platform, and a scraping roller is clamped at the through hole of the suspension. The scraping roller is connected to the output end of the motor, and the outer wall of the scraping roller is formed with a staggered first brush rack and a second brush rack;

[0010] A discharge platform is arranged at the inner bottom end of the drying box, and the tail of the discharge platform is close to the discharge end seat.

[0011] Preferably, the conveyor belt is provided with three layers in total, the conveying directions of the three layers of the conveyor belt are opposite, and a serpentine sludge conveying channel is left between the three layers of the conveyor belt.

[0012] Preferably, the sludge scraping roller rotates along the through holes of the two suspensions under the control of the motor, and the rotation direction of the sludge scraping roller is opposite to the conveying direction of the conveyor belt.

[0013] Preferably, a plurality of brush teeth are formed on the first brush rack and the second brush rack, and the edges of the brush teeth are attached to the surface of the conveyor belt.

[0014] Preferably, when the first brush rack and the second brush rack are in contact with the conveyor belt, a gap is left between them.

[0015] Preferably, the feeding end seat and the discharging end seat are provided with covers for blocking the openings. When the covers are installed, the drying box is a fully enclosed structure.

[0016] The above technical solution of the present utility model has the following beneficial technical effects: The water-containing sludge is input into the drying box, and through the cooperation of the transmission mechanism and the sludge scraping mechanism, it is subjected to layered crushing and drying through the serpentine sludge transmission channel composed of the upper, middle and lower conveyor belts. By designing a reasonable space, the sludge drying time is increased, the problem that the sludge caking and accumulation affect the drying effect is solved, and the heat provided by the hot air released by the heating device is fully utilized, solving the problem of heat waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the cooperation between the transmission mechanism and the sludge scraping mechanism of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the sludge scraping mechanism of the present utility model.

[0021] Reference Numerals:

[0022] 1, drying box; 11, feeding end seat; 12, discharging end seat; 2, heating device; 31, transmission table; 32, roller shaft; 33, driving device; 34, conveyor belt; 41, suspension; 42, sludge scraping roller; 43, motor; 44, first brush rack; 45, second brush rack; 5, discharging platform. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions, and advantages of the present utility model clearer and more explicit, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0024] As Figures 1-4 shown, a drying device for sludge dewatering treatment proposed by the present utility model includes a drying chamber 1, on which a feed end seat 11 for inputting sludge and a discharge end seat 12 for discharging dried sludge are installed, and a heating device 2 for providing hot air for sludge drying is installed on the side wall;

[0025] The transmission mechanism includes stacked transmission platforms 31. The transmission platform 31 internally connects a roller shaft 32 to the output end of a driving device 33. A transmission belt 34 is sleeved on the outer wall of the roller shaft 32, and the sludge to be dried is transported on the transmission belt 34;

[0026] The sludge scraping mechanism includes a suspension 41 provided at the tail of the transmission platform 31. A sludge scraping roller 42 is clamped at the through hole of the suspension 41. The sludge scraping roller 42 is connected to the output end of a motor 43, and first brush teeth 44 and second brush teeth 45 are formed on the outer wall in an alternating manner;

[0027] A discharge platform 5 is provided at the inner bottom end of the drying chamber 1, and the tail of the discharge platform 5 is close to the discharge end seat 12.

[0028] It should be noted that: A total of three layers of the transmission belt 34 are provided. The transmission directions of the three layers of the transmission belt 34 are opposite, and a serpentine sludge transmission channel is left between the three layers of the transmission belt 34. The water-containing sludge is hierarchically transported in the serpentine sludge transmission channel through the three layers of the transmission belt, indirectly increasing the drying time of the sludge.

[0029] In this embodiment, the water-containing sludge is input into the drying chamber 1 through the feed end seat 11. First, it falls onto the upper transmission platform 31 and is transported through the transmission belt 34. When it moves to the tail along with the transmission belt 34, the sludge scraping mechanism works. Since the sludge scraping roller 42 rotates along the through holes of the two suspensions 41 under the control of the motor 43, the rotation direction of the sludge scraping roller 42 is opposite to the transport direction of the transmission belt 34. The first brush teeth 44 and the second brush teeth 45 alternately scrape the sludge attached to the surface of the transmission belt 34. On the one hand, it prevents the sludge from adhering to the transmission belt 34 and causing blockage. On the other hand, it breaks and separates the sludge, making the agglomerated sludge in a loose state. During the transmission process, it is hierarchically broken and dried through the serpentine sludge transmission channels of the upper, middle, and lower layers, solving the problem that the sludge agglomeration and accumulation affect the drying effect, making full use of the heat provided by the hot air released by the heating device 2, and solving the problems of insufficient drying and heat waste.

[0030] It can be understood that a number of brush teeth are formed on the first brush rack 44 and the second brush rack 45, and the edges of the brush teeth are attached to the surface of the conveyor belt 34. When the two are in contact, since the brush teeth are arranged at intervals, the remaining gaps can be used for the broken sludge to pass through. Among them, the splashed sludge can directly fall into the lower layer behind the sludge scraping roller 42.

[0031] In an optional embodiment, cover plates for blocking the openings are provided on the feed end seat 11 and the discharge end seat 12. When the cover plates are installed, the drying oven 1 is a fully enclosed structure, and the fully enclosed structure can prevent the hot air from flowing out through the openings of the feed end seat 11 and the discharge end seat 12, preventing heat waste.

[0032] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A drying device for sludge dewatering treatment, characterized in that, It includes a drying oven (1), on which a feed end seat (11) for inputting sludge and a discharge end seat (12) for discharging dried sludge are installed, and a heat supply device (2) for providing hot air for sludge drying is installed on the side wall; The transmission mechanism includes stacked transmission platforms (31). A roller shaft (32) connected to the output end of a driving device (33) is built in the transmission platform (31). A transmission belt (34) is sleeved on the outer wall of the roller shaft (32), and the sludge to be dried is transported on the transmission belt (34); The sludge scraping mechanism includes a suspension (41) arranged at the tail of the transmission platform (31). A sludge scraping roller (42) is clamped at the through hole of the suspension (41); the sludge scraping roller (42) is connected to the output end of a motor (43), and staggered first brush teeth bars (44) and second brush teeth bars (45) are formed on the outer wall; A discharge platform (5) is arranged at the inner bottom end of the drying oven (1), and the tail of the discharge platform (5) is close to the discharge end seat (12).

2. The drying device for sludge dewatering treatment according to claim 1, characterized in that, There are three layers of the transmission belts (34) in total. The transmission directions of the three layers of the transmission belts (34) are opposite, and a serpentine sludge transmission channel is left between the three layers of the transmission belts (34).

3. A drying device for sludge dewatering treatment according to claim 1, characterized in that, The sludge scraping roller (42) is controlled by the motor (43) to rotate along the through holes of the two suspensions (41), and the rotation direction of the sludge scraping roller (42) is opposite to the conveying direction of the transmission belt (34).

4. A drying device for sludge dewatering treatment according to claim 1, characterized in that, A number of brush teeth are formed on the first brush teeth bar (44) and the second brush teeth bar (45), and the edges of the brush teeth are attached to the surface of the transmission belt (34).

5. A drying device for sludge dewatering treatment according to claim 1, characterized in that, When the first brush teeth bar (44) and the second brush teeth bar (45) are in contact with the transmission belt (34), a gap is left between them.

6. The drying device for sludge dewatering treatment according to claim 1, wherein, Cover plates for blocking the openings are arranged on the feed end seat (11) and the discharge end seat (12). When the cover plates are installed, the drying oven (1) is a fully enclosed structure.

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