A sludge collecting device for air floatation coagulation sedimentation zone

Abstract

The utility model relates to the technical field of sewage treatment especially is a kind of sludge collecting device of air floatation coagulation sedimentation zone, it is scraped to the floating scum on the surface of sewage by skimming device, and it is convenient to replace and clean the scraper, the floating scum scraped is collected by collecting device, and solid sludge in floating scum is sent out, liquid in floating scum is filtered out by filtering device, it is convenient to the collection and processing of sludge, improve the practicality of device;Including skimming device, collecting device and filtering device, collecting device is installed on skimming device, filtering device is installed on skimming device.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment, and in particular to a sludge collection device for an air flotation coagulation sedimentation zone. Background Technology

[0002] Wastewater flotation is a highly efficient solid-liquid separation technology, primarily used to remove suspended impurities in wastewater that have a density similar to water but cannot settle naturally or float to the surface. The flotation process involves introducing air into the wastewater, where it precipitates as tiny bubbles, acting as a carrier. Pollutants such as emulsified oil and fine suspended particles adhere to these bubbles and rise to the surface, forming a three-phase mixture of foam, air, water, and particles. By collecting the foam or scum, the impurities are separated, and the wastewater is purified.

[0003] The prior art Chinese utility model patent with application number CN201620589539.X relates to a multi-stage circulating high-efficiency scraper system for sewage flotation tanks, including scrapers, inlet pipes, outlet pumps, active rollers, and drive motors, which can control the movement of the scrapers to easily scrape off the flotation material on the surface of sewage.

[0004] However, in actual use, the above-mentioned device does not have the ability to perform secondary solid-liquid separation on the scraped foam, nor does it have the ability to collect sludge from the foam. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a sludge collection device for air flotation coagulation sedimentation zone. The device scrapes off the foam on the surface of sewage through a foam scraper, which is easy to replace and clean. The foam is collected by a collection device, the solid sludge in the foam is sent out, and the liquid in the foam is filtered out by a filtration device. This facilitates the collection and treatment of sludge and improves the practicality of the device.

[0006] This utility model discloses a sludge collection device for an air flotation coagulation settling zone; it includes a skimmer, a collection device, and a filter. The collection device is installed on the skimmer, and the filter is installed on the skimmer. The skimmer removes the foam from the surface of the wastewater and facilitates the replacement and cleaning of the skimmer. The collection device collects the skimmed foam and removes the solid sludge from the foam. The filter removes the liquid from the foam, which facilitates the collection and treatment of sludge and improves the practicality of the device.

[0007] Preferably, the skimming device includes a flotation tank, a rotating shaft, a conveyor belt, a first geared motor, rubber perforated frames, a support shaft, and scrapers. Multiple sets of rotating shafts are installed on the right side of the flotation tank, and the conveyor belt is mounted on these shafts. The first geared motor is installed on the rear end of the flotation tank, and its output end is connected to the outermost set of rotating shafts. Multiple sets of rubber perforated frames are symmetrically arranged on the conveyor belt, and the front and rear ends of the support shaft can be inserted into two sets of rubber perforated frames respectively. Scrapers are provided on the sides of the support shaft. Turning on the first geared motor transmits power to the connected rotating shaft, causing it to rotate. The multiple rotating shafts and the conveyor belt work together to drive the scrapers on the multiple support shafts to scrape away the foam on the water surface. The rubber perforated frames facilitate the flexible rotation of the support shafts and allow for quick disassembly and replacement, reducing the workload of maintenance personnel and improving the practicality of the device.

[0008] Preferably, the device also includes nuts, and external threads are provided on the sides of both ends of the support shaft. Both ends of the support shaft are fixed by a set of nuts. By fixing both ends of the support shaft with nuts, the possibility of the support shaft falling off itself during the rotation of the conveyor belt is reduced, thus improving the practicality of the device.

[0009] Preferably, the collection device includes a collection tank, a sludge discharge cylinder, a second geared motor, spiral blades, and a coarse filter screen. A collection tank is located on the right end face of the flotation tank. A sludge discharge cylinder is connected to the lower part of the right end face of the collection tank. A second geared motor is installed on the rear end face of the sludge discharge cylinder. The output end of the second geared motor extends into the sludge discharge cylinder and connects to the spiral blades. The left part of the spiral blades extends into the front part of the collection tank and connects to the front end face of the collection tank. The rear part of the sludge discharge cylinder is inclined upwards at a certain angle. A drain outlet is located at the lower part of the front end face of the collection tank, and a coarse filter screen is installed on the drain outlet. The collection tank collects the foam scraped by the foam scraper. The second geared motor is periodically turned on to transmit power to the sludge discharge cylinder, causing it to rotate and thus discharging the sludge from the collection tank. The upward inclination of the rear part of the sludge discharge cylinder reduces the amount of wastewater discharged along with the sludge, thus achieving simple separation of sludge and wastewater. The coarse filter screen on the front end face of the collection tank provides simple filtration of the wastewater, reducing the discharge of scum from the foam through the drain outlet and improving the practicality of the device.

[0010] Preferably, the filtration device includes a filter box and filter plates. The filter box is installed on the drain outlet at the front end of the collection tank, and a set of filter plates is installed at the top and bottom of the filter box. The wastewater is filtered twice by the two sets of filter plates, thereby reducing the amount of sludge in the wastewater and reducing the possibility of sludge entering the drain pipe and causing pipe blockage, thus improving the practicality of the device.

[0011] Preferably, the device also includes a plate-type solenoid valve and a vibration motor. A sludge discharge pipe is provided on the lower rear end face of the sludge discharge cylinder, and a plate-type solenoid valve is installed on the sludge discharge pipe. A vibration motor is installed on the outer side face of the sludge discharge pipe. The sludge discharge outlet is controlled by the plate-type solenoid valve, and the power is transmitted to the sludge discharge pipe by turning on the vibration motor, which drives the sludge discharge pipe to vibrate, reducing sludge residue and improving the practicality of the device.

[0012] Preferably, the device also includes heating resistance wires, with multiple sets of heating resistance wires horizontally installed in the upper part of the collection tank; the multiple sets of heating resistance wires break up the bubbles floating in the collection tank, reducing the overflow of bubbles from the collection tank and improving the practicality of the device.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the foam on the surface of sewage is scraped off by the foam scraping device, and the scraper is easy to replace and clean. The foam scraped off is collected by the collection device, and the solid sludge in the foam is sent out. The liquid in the foam is filtered out by the filtration device, which facilitates the collection and treatment of sludge and improves the practicality of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is a first cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the second cross-sectional structure of this utility model;

[0017] Figure 4 This is a partially enlarged structural schematic diagram of the present invention;

[0018] The following are labels in the attached diagram: 1. Flotation tank; 2. Rotating shaft; 3. Conveyor belt; 4. First geared motor; 5. Rubber perforated frame; 6. Support shaft; 7. Scraper; 8. Nut; 9. Collection trough; 10. Sludge discharge cylinder; 11. Second geared motor; 12. Spiral blade; 13. Coarse filter screen; 14. Filter box; 15. Filter plate; 16. Plate solenoid valve; 17. Vibration motor; 18. Heating resistance wire. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example

[0020] Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the collecting device is installed on the skimming device, and the filtering device is installed on the skimming device;

[0021] First, the first reduction motor 4 is turned on to transmit power to the connected rotating shaft 2, which drives the rotating shaft 2 to rotate. Multiple sets of rotating shafts 2 and conveyor belts 3 work together to drive scrapers 7 on multiple sets of support shafts 6 to scrape off the foam on the water surface. The foam scraped off by the foam scraping device is collected in the collection tank 9. The second reduction motor 11 is turned on periodically to transmit power to the sludge discharge cylinder 10, which drives the sludge discharge cylinder 10 to rotate, thereby discharging the sludge in the collection tank 9. The sludge discharge cylinder 10 is tilted upward at the rear to reduce the amount of sewage discharged with the sludge, thus achieving a simple separation of sludge and sewage. The sewage is simply filtered by the coarse filter screen 13 on the front surface of the collection tank 9. Multiple sets of heating resistance wires 18 break up the bubbles floating in the collection tank 9, reducing the overflow of bubbles from the collection tank 9.

[0022] The frothing device includes an air flotation tank 1, a rotating shaft 2, a conveyor belt 3, a first reduction motor 4, rubber perforated frames 5, a support shaft 6, and a scraper 7. Multiple sets of rotating shafts 2 are installed on the right side of the air flotation tank 1, and the conveyor belt 3 is fitted onto the multiple sets of rotating shafts 2. The first reduction motor 4 is installed on the rear end face of the air flotation tank 1, and the output end of the first reduction motor 4 is connected to the outermost set of rotating shafts 2. Multiple sets of rubber perforated frames 5 are evenly and symmetrically arranged on the front and back of the conveyor belt 3. The front and back ends of the support shaft 6 can be inserted into two sets of rubber perforated frames 5 respectively, and a scraper 7 is provided on the side of the support shaft 6.

[0023] It also includes nuts 8, and external threads are provided on the sides of both ends of the support shaft 6. Both ends of the support shaft 6 are respectively limited and fixed by a set of nuts 8.

[0024] The collection device includes a collection tank 9, a sludge discharge cylinder 10, a second reduction motor 11, a spiral blade 12, and a coarse filter screen 13. The collection tank 9 is provided on the right end face of the flotation tank 1. The lower part of the right end face of the collection tank 9 is connected to the sludge discharge cylinder 10. The second reduction motor 11 is installed on the rear end face of the sludge discharge cylinder 10. The output end of the second reduction motor 11 extends into the sludge discharge cylinder 10 and is connected to the spiral blade 12. The left part of the spiral blade 12 extends into the front part of the collection tank 9 and is connected to the front end face of the collection tank 9. The rear part of the sludge discharge cylinder 10 is inclined upward at a certain angle. A drain outlet is provided on the lower part of the front end face of the collection tank 9. A coarse filter screen 13 is installed on the drain outlet.

[0025] The filtration device includes a filter box 14 and filter plates 15. The filter box 14 is installed on the drain outlet at the front end of the collection tank 9. A set of filter plates 15 are installed inside the filter box 14, one above the other.

[0026] It also includes a plate solenoid valve 16 and a vibration motor 17. A sludge discharge pipe is provided on the lower rear end face of the sludge discharge cylinder 10. A plate solenoid valve 16 is installed on the sludge discharge pipe, and a vibration motor 17 is installed on the outer side face of the sludge discharge pipe.

[0027] It also includes heating resistance wires 18. Multiple sets of heating resistance wires 18 are horizontally installed in the upper part of the collection tank 9. The foam on the surface of the sewage is scraped off by the foam scraping device, which is convenient for replacing and cleaning the scraper. The foam scraped off is collected by the collection device, and the solid sludge in the foam is sent out. The liquid in the foam is filtered out by the filtration device, which is convenient for the collection and treatment of sludge and improves the practicality of the device.

[0028] like Figures 1 to 4 As shown, this utility model discloses a sludge collection device for an air flotation coagulation sedimentation zone. During operation, the first reduction motor 4 is activated to transmit power to the connected rotating shaft 2, causing it to rotate. Multiple rotating shafts 2 and conveyor belts 3 work together to drive scrapers 7 on multiple support shafts 6 to scrape away foam from the water surface. The foam scraped by the scraping device is collected in a collection tank 9. The second reduction motor 11 is periodically activated to transmit power to the sludge discharge cylinder 10, causing it to rotate and discharging the sludge from the collection tank 9. The upward tilt of the rear of the sludge discharge cylinder 10 reduces the amount of wastewater discharged with the sludge, thus achieving simple separation of sludge and wastewater. The wastewater is then simply filtered through a coarse filter screen 13 on the front surface of the collection tank 9. Multiple sets of heating resistance wires 18 break up the bubbles floating in the collection tank 9, reducing the overflow of bubbles from the collection tank 9.

[0029] The first reduction motor 4, the second reduction motor 11, the plate solenoid valve 16, the vibration motor 17, and the heating resistance wire 18 of the sludge collection device in the air flotation coagulation sedimentation zone of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A sludge collection device for an air flotation coagulation settling zone; characterized in that, It includes a skimming device, a collecting device, and a filtering device. The collecting device is installed on the skimming device, and the filtering device is installed on the skimming device. The collection device includes a collection tank (9), a sludge discharge cylinder (10), a second reduction motor (11), a spiral blade (12), and a coarse filter screen (13). The collection tank (9) is provided on the right end face of the flotation tank (1). The lower part of the right end face of the collection tank (9) is connected to the sludge discharge cylinder (10). The second reduction motor (11) is installed on the rear end face of the sludge discharge cylinder (10). The output end of the second reduction motor (11) extends into the sludge discharge cylinder (10) and connects with the spiral blade (12). The left part of the spiral blade (12) extends into the front part of the collection tank (9) and connects with the front end face of the collection tank (9). The rear part of the sludge discharge cylinder (10) is tilted upward at a certain angle. A drain outlet is provided on the lower part of the front end face of the collection tank (9). A coarse filter screen (13) is installed on the drain outlet.

2. The sludge collection device for the air flotation coagulation settling zone as described in claim 1, characterized in that, The frothing device includes an air flotation tank (1), a rotating shaft (2), a conveyor belt (3), a first geared motor (4), rubber hole frames (5), a support shaft (6), and a scraper (7). Multiple sets of rotating shafts (2) are installed on the right side of the air flotation tank (1). The conveyor belt (3) is fitted on multiple sets of rotating shafts (2). The first geared motor (4) is installed on the rear end face of the air flotation tank (1). The output end of the first geared motor (4) is connected to the outermost set of rotating shafts (2). Multiple sets of rubber hole frames (5) are evenly and symmetrically arranged on the conveyor belt (3). The front and rear ends of the support shaft (6) can be inserted into two sets of rubber hole frames (5) respectively. A scraper (7) is provided on the side of the support shaft (6).

3. The sludge collection device for the air flotation coagulation settling zone as described in claim 2, characterized in that, It also includes nuts (8), and the two ends of the support shaft (6) are respectively provided with external threads. The two ends of the support shaft (6) are respectively limited and fixed by a set of nuts (8).

4. The sludge collection device for the air flotation coagulation settling zone as described in claim 3, characterized in that, The filtration device includes a filter box (14) and filter plates (15). The filter box (14) is installed on the drain outlet at the front end of the collection tank (9). A set of filter plates (15) are installed inside the filter box (14) at the top and bottom respectively.

5. The sludge collection device for the air flotation coagulation settling zone as described in claim 4, characterized in that, It also includes a plate solenoid valve (16) and a vibration motor (17). A mud discharge pipe is provided on the lower rear end face of the mud discharge cylinder (10). A plate solenoid valve (16) is installed on the mud discharge pipe. A vibration motor (17) is installed on the outer side face of the mud discharge pipe.

6. The sludge collection device for the air flotation coagulation settling zone as described in claim 5, characterized in that, It also includes heating resistance wires (18), and multiple sets of heating resistance wires (18) are horizontally installed in the upper part of the collection tank (9).

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