A gas float cleaning device for sludge
By introducing scraping and auxiliary devices into the flotation cleaning equipment, the scaling problem during sludge flotation was solved, and the cleaning of the equipment's inner wall and the stability of the treatment efficiency were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CIXI YUANDA ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-07
AI Technical Summary
In existing sludge flotation cleaning equipment, fine sludge particles or minerals easily adhere to the inner wall of the tank and the outlet of the dissolved air release device, accumulating over a long period of time to form hard scale, resulting in a reduction in effective treatment space and pipe blockage.
An air flotation cleaning device including a scraping device and an auxiliary device was designed. The scraping device uses a motor to drive a rotating gear and a scraping plate to vibrate and scrape the inner wall. The auxiliary device uses a hydraulic cylinder to drive a push plate to push the sludge, preventing scaling and keeping the tank clean.
It effectively prevents scum from caking, ensures the continuity of solid-liquid separation, keeps the inner wall of the tank clean, avoids a decrease in treatment efficiency, and ensures stable effluent quality.
Smart Images
Figure CN224467663U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air flotation device technology, and in particular to an air flotation cleaning device for sludge. Background Technology
[0002] An air flotation device is a device that uses the buoyancy of gas to suspend objects. Common applications include the treatment of suspended liquids in industrial production processes, sewage treatment, wastewater treatment, and the removal of floating debris at sea. An air flotation device typically consists of a buoyancy chamber and a gas supply system. In the buoyancy chamber, gas is injected into the liquid, generating bubbles that push the liquid up and float suspended particles to the surface, thereby achieving separation and removal, thus realizing solid-liquid and liquid-liquid separation.
[0003] Because in the existing flotation cleaning equipment for sludge, some fine sludge particles or minerals that are not carried by the air bubbles tend to adhere to the inner wall of the tank, the outlet of the dissolved air release device, and other parts during the flotation process, long-term accumulation will form hard scale, reduce the effective treatment space, and block the pipes or release device, so this needs to be improved. Utility Model Content
[0004] The purpose of this invention is to solve the problem in the existing technology that, during the air flotation process, some fine sludge particles or minerals that are not carried by the air bubbles easily adhere to the inner wall of the tank, the outlet of the dissolved air release device, etc., and will form hard scale over a long period of time, reducing the effective treatment space and clogging the pipes or the release device. Therefore, this invention proposes an air flotation cleaning device for sludge.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an air flotation cleaning device for sludge, comprising a support frame, a device body fixedly connected to the top of the support frame, a sludge outlet at the bottom of the device body, a dissolved air release device on one side of the device body, a scraping device inside the device body, the scraping device including a connecting pipe, the connecting pipe fixedly connected to one side of the dissolved air release device, a pump body on the side of the connecting pipe away from the dissolved air release device, an air inlet pipe fixedly connected to one side of the pump body, the air inlet pipe connected to the device body on the side away from the pump body, a rotating gear rotatably connected to one side of the inner wall of the device body, a rotating shaft fixedly connected inside the rotating gear, and a scraping plate movably connected to the upper surface of the device body.
[0006] Furthermore, a rack rod one is meshed with the top of the rotating gear, and a rack rod two is meshed with the bottom of the rotating gear. Vibration plates are fixedly connected to the surfaces of both rack rod one and rack rod two.
[0007] Furthermore, rack rod one and rack rod two are movably connected to the inner wall of the equipment body, and a driving bevel gear is fixedly connected to the side of the rotating shaft away from the rotating gear, and driven bevel gears are meshed on both sides of the driving bevel gear.
[0008] Furthermore, a lead screw is fixedly connected to the surface of the driven bevel gear, and a sliding block is threadedly connected to the surface of the lead screw, the sliding block being slidably connected to the outer wall of the equipment body.
[0009] Furthermore, one side of the scraping plate is fixedly connected to the surface of the sliding block, and the other side of the scraping plate is slidably connected to the inner wall of the equipment body.
[0010] Furthermore, a motor is provided on one side of the rotating shaft, the motor is located outside the device body, and the output end of the motor is fixedly connected to one side of the rotating shaft.
[0011] Furthermore, an auxiliary device is provided at the bottom of the inner part of the device body. The auxiliary device includes a movable groove, which is opened on both sides of the inner part of the device body.
[0012] Furthermore, a movable block is movably connected inside the movable slot, a support plate is fixedly connected between two movable blocks, and a push plate is fixedly connected to the top of the support plate.
[0013] Furthermore, a hydraulic cylinder is provided at the bottom of the equipment body, the driving end of the hydraulic cylinder is fixedly connected to one side of the support plate, and a connecting plate is fixedly connected to the bottom of the support plate.
[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0015] 1. In this utility model, a scraping device is used to maximize the dissolution of gas into water under a certain working pressure, aiming for a saturated state. The resulting pressurized dissolved air water is then released through decompression, generating a large number of microbubbles. These microbubbles fully contact the suspended flocs in the water, causing the flocs to adhere to the microbubbles and float to the surface, forming scum. At this point, some impurities easily adhere to the inner wall of the equipment body. The motor output can drive the rotating shaft to rotate, which in turn drives the rotating gears, causing the racks at both ends to slide inside the equipment body. This, in turn, causes the vibrating plate to vibrate the inner wall of the equipment body. As the rotating shaft rotates, it drives the active bevel gear to rotate, which in turn drives the driven bevel gear to rotate, causing the two lead screws to rotate. This causes the sliding block to slide left and right, which in turn drives the scraper to scrape off the scum on its surface. For high-concentration sludge or highly viscous scum, the water that has been cleaned inside the equipment body can be pumped through the air inlet pipe and then introduced into the dissolved air release device through the connecting pipe. Through the continuous operation of the scraper or the high-frequency scraping action, the scum is prevented from caking, ensuring the continuity of solid-liquid separation. The vibration of the inner wall causes a slight displacement of the inner wall, which breaks the adhesion between the sludge and the inner wall, preventing scale formation and causing the already attached sludge to fall off and enter the scum layer with the water flow.
[0016] 2. In this utility model, by setting an auxiliary device, when sludge accumulates at the bottom, the drive end of the hydraulic cylinder can drive the support plate and the push plate to push the sludge. During the pushing process, the movable block will move with the interior of the movable groove, thereby increasing the stability of the push plate movement. At the same time, the connecting plate can further push the sludge at the bottom, and then open the sludge outlet to discharge the sludge. The bottom sludge pushing device can push the deposited sludge to the bottom sludge outlet in a timely manner through continuous or timed pushing action, ensuring that the bottom of the pool is always kept clean, maintaining the designed processing capacity of the equipment, and avoiding the decrease in processing efficiency due to the reduction of volume. Attached Figure Description
[0017] Figure 1 This utility model provides a schematic diagram of the vertical structure of an air flotation cleaning device for sludge.
[0018] Figure 2 This utility model provides a side view of the structure of an air flotation cleaning device for sludge.
[0019] Figure 3 This utility model provides a schematic diagram of the scraping device structure for an air flotation cleaning equipment for sludge.
[0020] Figure 4 This utility model provides a partial structural diagram of an air flotation cleaning device for sludge.
[0021] Figure 5 This utility model provides a schematic diagram of the auxiliary device structure for an air flotation cleaning equipment for sludge.
[0022] Legend:
[0023] 1. Support frame; 2. Equipment body; 3. Mud outlet; 4. Dissolved gas release device; 5. Scraping device; 51. Connecting pipe; 52. Pump body; 53. Air inlet pipe; 54. Rotating gear; 55. Rack rod one; 56. Rack rod two; 57. Vibrating plate; 58. Rotating shaft; 59. Driving bevel gear; 510. Driven bevel gear; 511. Lead screw; 512. Sliding block; 513. Scraping plate; 514. Motor; 6. Auxiliary device; 61. Movable groove; 62. Movable block; 63. Support plate; 64. Push plate; 65. Hydraulic cylinder; 66. Connecting plate. Detailed Implementation
[0024] Please see Figure 1-5 This utility model provides a technical solution: an air flotation cleaning device for sludge, including a support frame 1, a device body 2 fixedly connected to the top of the support frame 1, a sludge outlet 3 provided at the bottom of the device body 2, a dissolved air release device 4 provided on one side of the device body 2, and a scraping device 5 provided inside the device body 2.
[0025] The following section will describe in detail the specific setup and function of its scraping device 5 and auxiliary device 6.
[0026] In this embodiment: the scraping device 5 includes a connecting pipe 51, which is fixedly connected to one side of the dissolved gas releaser 4. A pump body 52 is provided on the side of the connecting pipe 51 away from the dissolved gas releaser 4. An air inlet pipe 53 is fixedly connected to one side of the pump body 52. The side of the air inlet pipe 53 away from the pump body 52 is connected to the device body 2. A rotating gear 54 is rotatably connected to one side of the inner wall of the device body 2. A rotating shaft 58 is fixedly connected inside the rotating gear 54. A scraping plate 513 is movably connected to the upper surface of the device body 2.
[0027] Specifically, a rack rod 55 is meshed at the top of the rotating gear 54, and a rack rod 56 is meshed at the bottom of the rotating gear 54. Vibration plates 57 are fixedly connected to the surfaces of both rack rod 55 and rack rod 56.
[0028] Specifically, rack rod 1 55 and rack rod 2 56 are movably connected to the inner wall of the equipment body 2. A driving bevel gear 59 is fixedly connected to the side of the rotating shaft 58 away from the rotating gear 54. Both sides of the driving bevel gear 59 are meshed with driven bevel gears 510.
[0029] Specifically, a lead screw 511 is fixedly connected to the surface of the driven bevel gear 510, and a sliding block 512 is threadedly connected to the surface of the lead screw 511.
[0030] Specifically, one side of the scraping plate 513 is fixedly connected to the surface of the sliding block 512, and the other side of the scraping plate 513 is slidably connected to the inner wall of the equipment body 2.
[0031] Specifically, a motor 514 is provided on one side of the rotating shaft 58, and the output end of the motor 514 is fixedly connected to one side of the rotating shaft 58.
[0032] The effect achieved by the above components is as follows: by setting up the scraping device 5, the output end of the motor 514 drives the rotating shaft 58 to rotate. At the same time, the rotating gear 54 will rotate, causing the rack rod 55 and rack rod 56 at its upper and lower ends to slide inside the equipment body 2, thereby driving the vibrating plate 57 to vibrate the inner wall of the equipment body 2. When the rotating shaft 58 rotates, it will drive the driving bevel gear 59 to rotate. During the operation, it will drive the driven bevel gear 510 to rotate, thereby driving the scraping plate 513 to scrape off the scum on its surface. The efficient operation of the scraping device can keep the water surface clean, ensure that the water flow and air bubble distribution in the flotation tank are uniform, and maintain a stable treatment effect.
[0033] Specifically, an auxiliary device 6 is provided at the bottom of the inner part of the equipment body 2. The auxiliary device 6 includes a movable groove 61, which is opened on both sides of the inner part of the equipment body 2.
[0034] Specifically, the movable slot 61 is internally connected to a movable block 62, and a support plate 63 is fixedly connected between two movable blocks 62. A push plate 64 is fixedly connected to the top of the support plate 63.
[0035] Specifically, a hydraulic cylinder 65 is provided at the bottom of the equipment body 2. The driving end of the hydraulic cylinder 65 is fixedly connected to one side of the support plate 63, and a connecting plate 66 is fixedly connected to the bottom of the support plate 63.
[0036] The effect achieved by the above components is as follows: by setting the auxiliary device 6, the support plate 63 and the push plate 64 are driven by the driving end of the hydraulic cylinder 65 to push the sludge. During the pushing process, the movable block 62 will move with the interior of the movable groove 61, thereby increasing the stability of the movement of the push plate 64. At the same time, the sludge at the bottom can be further pushed by the action of the connecting plate 66, reducing the residence time of the sludge in the pool, avoiding secondary pollution of the water body, ensuring that the effluent water quality is stable and meets the standards, and increasing the stability of the device.
[0037] Working principle:
[0038] By using a scraping device 5, air and water are mixed under a certain working pressure to maximize the dissolution of gas into the water, aiming for a saturated state. The resulting pressurized dissolved air water is then released through decompression, generating a large number of microbubbles. These microbubbles come into full contact with the suspended flocs in the water, causing the flocs to adhere to the microbubbles and float to the surface, forming scum. At this point, some impurities easily adhere to the inner wall of the equipment body 2. The output of the motor 514 drives the rotating shaft 58 to rotate, which in turn drives the rotating gear 54, causing the rack rods 55 and 56 at both ends to slide inside the equipment body 2. This, in turn, causes the vibrating plate 57 to vibrate the inner wall of the equipment body 2. As the rotating shaft 58 rotates... Simultaneously, it will drive the active bevel gear 59 to rotate, which in turn will drive the driven bevel gear 510 to rotate, causing it to drive the two lead screws 511 to rotate, thereby causing the sliding block 512 to slide left and right. This will drive the scraper 513 to scrape off the scum on its surface. For high-concentration sludge or highly viscous scum, the water cleaned from the inside of the equipment body 2 can be pumped through the pump body 52 and the air inlet pipe 53, and then enter the dissolved air release device 4 through the connecting pipe 51. Through the continuous operation of the scraper or the high-frequency scraping action, the scum is prevented from caking, ensuring the continuity of solid-liquid separation. The vibration of the inner wall causes a slight displacement of the inner wall, destroying the adhesion between the sludge and the inner wall, preventing scale formation, and at the same time promoting the detachment of the already attached sludge and letting it enter the scum layer with the water flow.
[0039] Then, by setting the auxiliary device 6, when the sludge accumulates at the bottom, the drive end of the hydraulic cylinder 65 can drive the support plate 63 and the push plate 64 to push the sludge. During the pushing process, the movable block 62 will move with the interior of the movable groove 61, thereby increasing the stability of the push plate 64. At the same time, the connecting plate 66 can further push the sludge at the bottom, and then open the sludge outlet 3 to discharge the sludge. The bottom sludge pushing device can push the deposited sludge to the bottom sludge outlet in a timely manner through continuous or timed pushing action, ensuring that the bottom of the tank is always kept clean, maintaining the designed processing capacity of the equipment, and avoiding the decrease in processing efficiency due to the reduction of volume.
Claims
1. A flotation cleaning device for sludge, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixedly connected to the equipment body (2), the bottom of the equipment body (2) is provided with a mud outlet (3), a dissolved gas release device (4) is provided on one side of the equipment body (2), a scraping device (5) is provided inside the equipment body (2), the scraping device (5) includes a connecting pipe (51), the connecting pipe (51) is fixedly connected to one side of the dissolved gas release device (4), a pump body (52) is provided on the side of the connecting pipe (51) away from the dissolved gas release device (4), an air inlet pipe (53) is fixedly connected on one side of the pump body (52), the side of the air inlet pipe (53) away from the pump body (52) is connected to the equipment body (2), a rotating gear (54) is rotatably connected to one side of the inner wall of the equipment body (2), a rotating shaft (58) is fixedly connected inside the rotating gear (54), and a scraping plate (513) is movably connected to the upper surface of the equipment body (2).
2. The flotation cleaning equipment for sludge according to claim 1, characterized in that: The top of the rotating gear (54) is meshed with a rack rod one (55), and the bottom of the rotating gear (54) is meshed with a rack rod two (56). Vibration plates (57) are fixedly connected to the surfaces of both rack rod one (55) and rack rod two (56).
3. The flotation cleaning equipment for sludge according to claim 2, characterized in that: The rack rod one (55) and rack rod two (56) are movably connected to the inner wall of the equipment body (2). The side of the rotating shaft (58) away from the rotating gear (54) is fixedly connected to the driving bevel gear (59). Both sides of the driving bevel gear (59) are meshed with driven bevel gears (510).
4. The flotation cleaning equipment for sludge according to claim 3, characterized in that: A lead screw (511) is fixedly connected to the surface of the driven bevel gear (510), and a sliding block (512) is threadedly connected to the surface of the lead screw (511).
5. The flotation cleaning device for sludge according to claim 4, characterized in that: One side of the scraper (513) is fixedly connected to the surface of the sliding block (512), and the other side of the scraper (513) is slidably connected to the inner wall of the equipment body (2).
6. The flotation cleaning device for sludge according to claim 5, characterized in that: A motor (514) is provided on one side of the rotating shaft (58), and the output end of the motor (514) is fixedly connected to one side of the rotating shaft (58).
7. The flotation cleaning equipment for sludge according to claim 1, characterized in that: An auxiliary device (6) is provided at the bottom of the inner side of the equipment body (2). The auxiliary device (6) includes a movable groove (61), which is located on both sides of the inner side of the equipment body (2).
8. The flotation cleaning device for sludge according to claim 7, characterized in that: The movable slot (61) is movably connected to a movable block (62), and a support plate (63) is fixedly connected between two movable blocks (62). A push plate (64) is fixedly connected to the top of the support plate (63).
9. The flotation cleaning device for sludge according to claim 8, characterized in that: A hydraulic cylinder (65) is provided at the bottom of the equipment body (2). The driving end of the hydraulic cylinder (65) is fixedly connected to one side of the support plate (63). A connecting plate (66) is fixedly connected to the bottom of the support plate (63).