Sludge dryer for sewage treatment

Abstract

The utility model discloses a sludge drying machine for sewage treatment, including bottom plate, drying cylinder and servo motor, the inner top portion fixed mounting of drying cylinder has the baffle, and the inside drying cylinder rotates and is provided with screw rod at the top portion of baffle, and the screw rod is screw through the connection with movable block, and movable block is rotatably connected with support pivot through the bearing, and the top of support pivot is fixedly installed with driving gear, and the bottom of support pivot is evenly installed with a plurality of mixing plate at the bottom of baffle, and the movable block is fixedly installed with arc scraper in the end away from support pivot, and arc scraper and the bottom of drying cylinder are movable and are pasted, relate to the field of sewage treatment, through scraping the hole and drive the arc scraper of drying cylinder bottom reciprocating motion, improve mixing drying effect, after realizing the drying of sludge, through the discharge pipe and export the sludge after drying, through arc scraper, the sludge of drying cylinder inner wall is scraped, improves the discharge efficiency of drying cylinder internal sludge.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a sludge dryer for wastewater treatment. Background Technology

[0002] With the development of society and economy, urban and industrial wastewater treatment plants generate a large amount of sludge with high water content. The sludge contains a large amount of organic matter and heavy metals, which must be treated to avoid serious environmental pollution. After the sludge is concentrated and dewatered by centrifugation, its water content is usually still around 80%. The sludge that is settled after treatment needs to be dried by a dryer because it contains water.

[0003] Currently, traditional wastewater treatment plants generally use sludge dryers to dry sludge in order to reduce its moisture content. The treated sludge is then landfilled, solidified, or dried. However, existing sludge dryers have several drawbacks during the drying process. First, they fail to properly mix and stir the sludge, resulting in incomplete drying. Second, the dried sludge is prone to clogging during discharge, and it may also adhere to the inner wall of the dryer, leading to incomplete discharge. To address these issues, this invention provides a sludge dryer for wastewater treatment. Utility Model Content

[0004] The purpose of this application is to provide a sludge dryer for wastewater treatment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a sludge dryer for sewage treatment, comprising a base plate, a drying cylinder, and a servo motor. A partition plate is fixedly installed on the top inner part of the drying cylinder. A screw is rotatably installed at the top of the partition plate inside the drying cylinder. A movable block is threaded through the screw. A support shaft is rotatably connected to the movable block via a bearing. A drive gear is fixedly installed at the top of the support shaft. Several mixing plates are evenly installed at the bottom of the partition plate at the bottom of the support shaft. The movable block has an arc-shaped scraper fixedly installed at one end away from the supporting shaft, and the arc-shaped scraper is movably fitted to the bottom of the drying cylinder. The partition has scraping holes, and the top of the arc-shaped scraper moves in the scraping holes. Several heaters are evenly installed around the bottom of the drying cylinder.

[0006] Preferably, a rack plate is fixedly installed inside the drying cylinder on one side of the top of the partition, and the rack plate is movably engaged with the drive gear.

[0007] Preferably, a limiting rod is fixedly installed inside the drying cylinder, and both ends of the movable block pass through the limiting rod. The servo motor is fixedly installed outside the drying cylinder via a motor plate, and one end of the screw is fixedly installed on the output end of the servo motor.

[0008] Preferably, an L-shaped feed hopper is fixedly installed at the top of the drying cylinder at the end away from the servo motor, a discharge pipe is fixedly installed at the bottom of the drying cylinder at the end away from the L-shaped feed hopper, and an air outlet is provided at the top of the drying cylinder.

[0009] Preferably, the partition plate has a support groove that matches the size of the support shaft, and the support shaft moves within the support groove.

[0010] Preferably, the drying cylinder is fixedly installed at the top of the base plate, a battery pack for powering the heater and the servo motor is fixedly installed at the top of the base plate, and a controller is fixedly installed at the top of the base plate.

[0011] In summary, the technical effects and advantages of this utility model are as follows: 1. In this utility model, the arc-shaped scraper at the bottom of the drying cylinder is driven to reciprocate by scraping the holes, which improves the mixing and drying effect. After the sludge is dried, the dried sludge is discharged through the discharge pipe. The arc-shaped scraper scrapes the sludge on the inner wall of the drying cylinder, thereby improving the sludge discharge efficiency inside the drying cylinder. 2. In this utility model, the movable block on the screw is driven by the servo motor on the motor plate to achieve reciprocating motion under the action of the limit rod. During the movement, the movable block drives the active gear on the support shaft to mesh with the rack plate, causing the support shaft on the movable block to rotate. The support shaft then mixes and stirs the sludge at the bottom of the drying cylinder through the mixing plate, achieving simultaneous mixing and heating drying, resulting in high drying efficiency and good drying effect. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic perspective view of the overall structure of a sludge dryer for wastewater treatment according to an embodiment of this application; Figure 2 This is a schematic perspective view of the internal structure of the drying cylinder of a sludge dryer for wastewater treatment according to an embodiment of this application; Figure 3 This is a schematic perspective view of the drive gear structure of a sludge dryer for wastewater treatment in an embodiment of this application; Figure 4 This is a schematic perspective view of the support shaft structure of a sludge dryer for wastewater treatment according to an embodiment of this application.

[0014] In the diagram: 10. Base plate; 11. Battery pack; 12. Controller; 20. Drying cylinder; 21. Partition plate; 22. L-shaped feed hopper; 23. Discharge pipe; 24. Air outlet; 25. Support groove; 26. Scraper hole; 27. Heater; 30. Servo motor; 31. Screw; 32. Movable block; 33. Support shaft; 34. Drive gear; 35. Mixing plate; 36. Arc-shaped scraper; 37. Rack plate; 38. Motor plate; 39. Limit rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The sludge dryer for wastewater treatment shown includes a base plate 10, a drying cylinder 20 and a servo motor 30. A partition 21 is fixedly installed on the top inner part of the drying cylinder 20, which divides the drying cylinder 20 into upper and lower spaces. The partition 21 effectively blocks the wastewater at the bottom of the drying cylinder 20, preventing the wastewater from splashing during the stirring process.

[0017] Inside the drying cylinder 20, a screw 31 is rotatably installed at the top of the partition 21. A movable block 32 is threaded through the screw 31. A limit rod 39 is fixedly installed inside the drying cylinder 20, and both ends of the movable block 32 are movably inserted through the limit rod 39. A servo motor 30 is fixedly installed outside the drying cylinder 20 through the motor plate 38, and one end of the screw 31 is fixedly installed on the output end of the servo motor 30.

[0018] The movable block 32 is rotatably connected to the support shaft 33 via bearings. The top of the support shaft 33 is fixedly mounted with a drive gear 34. The partition plate 21 has a support groove 25 that matches the size of the support shaft 33, and the support shaft 33 moves within the support groove 25. Several mixing plates 35 are evenly installed at the bottom of the partition plate 21, which improves the stirring effect on the sewage inside the drying cylinder 20. Inside the drying cylinder 20, a rack plate 37 is fixedly installed on one side of the top of the partition plate 21, and the rack plate 37 is in movable mesh with the drive gear 34. The movable meshing of the rack plate 37 and the drive gear 34 drives the mixing plates 35 under the support shaft 33 to mix and stir.

[0019] The bottom of the drying cylinder 20 is a semi-circular hollow structure, while the top of the drying cylinder 20 is a square hollow structure. The movable block 32 has an arc-shaped scraper 36 fixedly installed at the end away from the supporting rotating shaft 33, and the arc-shaped scraper 36 is in contact with the bottom of the drying cylinder 20. The arc-shaped scraper 36 scrapes and cleans the sludge at the bottom of the drying cylinder 20. The partition plate 21 has a scraping hole 26, and the top of the arc-shaped scraper 36 is movably inserted into the scraping hole 26.

[0020] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The drying cylinder 20 is fixedly installed on the top of the base plate 10. An air vent 24 is provided on the top of the drying cylinder 20. An L-shaped feed hopper 22 is fixedly installed at the top of the drying cylinder 20 at the end furthest from the servo motor 30 for easy material filling. A discharge pipe 23 is fixedly installed at the bottom of the drying cylinder 20 at the end furthest from the L-shaped feed hopper 22 to discharge sludge after wastewater drying. Several heaters 27 are evenly installed around the bottom of the drying cylinder 20 to heat and dry the wastewater inside. A battery pack 11, which supplies power to the heaters 27 and the servo motor 30, is fixedly installed on the top of the base plate 10. A controller 12 is fixedly installed on the top of the base plate 10 to control the heaters 27 and the servo motor 30.

[0021] The working principle of this utility model is as follows: Wastewater containing sludge is injected into the drying cylinder 20 through the L-shaped feed hopper 22. The servo motor 30 on the motor plate 38 drives the movable block 32 on the screw 31 to reciprocate under the action of the limit rod 39. During the movement, the movable block 32 drives the active gear 34 on the support shaft 33 to mesh with the rack plate 37, causing the support shaft 33 on the movable block 32 to rotate. The support shaft 33 then mixes and stirs the sludge at the bottom of the drying cylinder 20 through the mixing plate 35. The battery pack 11 and the controller 12 work to operate the heaters 27 around the bottom of the drying cylinder 20. The heaters 27 heat and dry the wastewater inside. The water vapor generated inside is discharged through the L-shaped feed hopper 22 and the air outlet 24, realizing simultaneous mixing and heating drying, with high drying efficiency and good drying effect. During the drying process, the movable block 32 also drives the arc-shaped scraper 36 at the bottom of the drying cylinder 20 to reciprocate through the scraping hole 26, improving the mixing and drying effect. After the sludge is dried, the dried sludge is discharged through the discharge pipe. The arc-shaped scraper 36 scrapes the sludge on the inner wall of the drying cylinder 20, improving the discharge efficiency of the sludge inside the drying cylinder 20 and effectively preventing the sludge from accumulating inside the drying cylinder 20 and sticking to the inner wall of the drying cylinder 20. The design is reasonable and ingenious.

[0022] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sludge dryer for wastewater treatment, comprising a base plate (10), a drying cylinder (20), and a servo motor (30), characterized in that, A partition plate (21) is fixedly installed on the top of the inner part of the drying cylinder (20). A screw (31) is rotatably installed at the top of the partition plate (21) inside the drying cylinder (20). A movable block (32) is threaded through the screw (31). A support shaft (33) is rotatably connected to the movable block (32) through a bearing. A drive gear (34) is fixedly installed at the top of the support shaft (33). Several mixing plates (35) are evenly installed at the bottom of the partition plate (21) at the bottom of the support shaft (33). The movable block (32) has an arc-shaped scraper (36) fixedly installed at one end away from the supporting shaft (33), and the arc-shaped scraper (36) is in contact with the bottom of the drying cylinder (20). The partition (21) has a scraping hole (26), and the top of the arc-shaped scraper (36) moves in the scraping hole (26). Several heaters (27) are evenly installed around the bottom of the drying cylinder (20).

2. The sludge dryer for wastewater treatment according to claim 1, characterized in that: Inside the drying cylinder (20), a rack plate (37) is fixedly installed on one side of the top of the partition plate (21), and the rack plate (37) is movably meshed with the drive gear (34).

3. A sludge dryer for wastewater treatment according to claim 1, characterized in that: The drying cylinder (20) is fixedly installed inside a limiting rod (39), and the two ends of the movable block (32) pass through the limiting rod (39). The drying cylinder (20) is fixedly installed outside through a motor plate (38), and one end of the screw (31) is fixedly installed on the output end of the servo motor (30).

4. A sludge dryer for wastewater treatment according to claim 1, characterized in that: The drying cylinder (20) has an L-shaped feed hopper (22) fixedly installed at the top of the end away from the servo motor (30), and a discharge pipe (23) fixedly installed at the bottom of the end away from the L-shaped feed hopper (22). An air outlet (24) is opened at the top of the drying cylinder (20).

5. A sludge dryer for wastewater treatment according to claim 1, characterized in that: The partition (21) has a support groove (25) that matches the size of the support shaft (33), and the support shaft (33) moves in the support groove (25).

6. A sludge dryer for wastewater treatment according to claim 1, characterized in that: The drying cylinder (20) is fixedly installed on the top of the base plate (10). A battery pack (11) for powering the heater (27) and the servo motor (30) is fixedly installed on the top of the base plate (10). A controller (12) is fixedly installed on the top of the base plate (10).

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