Air floatation slag scraping device capable of adjusting height of scraping plate

Abstract

The utility model provides an air floatation slag scraping device capable of adjusting the height of a scraper blade, which relates to the technical field of slag scraping of air floatation machines, is applied to the air floatation machines, and comprises a chain transmission component, a mounting block, a scraper blade mounting seat, the scraper blade, a long-strip hole, a round hole and a fixing bolt, according to the device, the height of the scraping plate can be manually and finely adjusted according to needs, so that the scraping plate can be in contact with scum on the liquid surface of the scum scraping area to achieve scraping, meanwhile, the scraping plate can also be in contact with the guide plate, so that the scum is efficiently pushed to fall into the scum storage area, errors caused by various irresistible factors are dealt with, and the scum scraping working effect is better.

Description

Technical Field

[0001] This utility model relates to the field of air flotation slag scraping technology, and more specifically, to an air flotation slag scraping device with adjustable scraper height. Background Technology

[0002] As a highly efficient and rapid solid-liquid separation technology, dissolved air flotation (DAF) machines are generally used in wastewater treatment processes, primarily in the pre-treatment physicochemical phase and the final suspended solids removal stage. Their main function is to remove suspended solids from wastewater. The working principle of an DAF machine is to utilize tiny air bubbles in dissolved air water to coat the surface of fine suspended solids in the wastewater, causing them to float. A scraper then separates the solids, scraping the scum into a sludge tank.

[0003] Currently, the scraper blades and chain drive components of the slag scraping device are fixed by welding, making their height unchangeable. However, the liquid level in the slag scraping area may experience slight errors due to unforeseen circumstances. If the liquid level is too low, the scraper blades will not be able to contact the liquid surface to scrape off the slag. Additionally, if there is a deviation during the initial installation of the scraper blades, they will not be able to contact the guide plate to push the scraped slag into the slag storage area. In conclusion, the effectiveness of the slag scraping device needs to be improved. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art, and to propose an air flotation slag scraping device with adjustable scraper height.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An adjustable scraper height air flotation sludge scraping device, applied to an air flotation machine, includes a chain drive assembly, a mounting block, a scraper mounting seat, a scraper, an elongated hole, a round hole, and fixing bolts.

[0007] Several sets of mounting blocks are fixed on the chain of the chain drive assembly;

[0008] The scraper mounting base is fixed on a set of mounting blocks, and several elongated holes are horizontally opened on the scraper mounting base;

[0009] The scraper has several round holes that correspond one-to-one with the elongated holes and are distributed directly opposite each other;

[0010] Several sets of fixing bolts pass through several sets of round holes and elongated holes in sequence to finely adjust the height and position of the scraper.

[0011] Furthermore, the air flotation machine is equipped with an automatic rinsing component located on one side of the chain drive assembly, and the automatic rinsing component and the scraper are distributed at intervals.

[0012] Furthermore, the automatic rinsing assembly includes a mounting frame, a suction pump, a rinsing box, and nozzles. The mounting frame is mounted on the body of the air flotation machine. The suction pump and the rinsing box are both fixed on the mounting frame, and the suction pump is connected to the inside of the rinsing box. Several nozzles are provided on the rinsing box.

[0013] Furthermore, the nozzle includes a lower nozzle and a side nozzle.

[0014] After the scraper has been operating continuously for a long time, a small amount of scum will remain on its surface. Therefore, there is no need for manual cleaning after the chain drive component stops working. The chain drive component only needs to drive several scrapers to move in sequence to the area where the automatic flushing component is installed to flush the surface. The side nozzles and the bottom nozzles can clean the scum remaining on the two sides of the scraper respectively. The scum and wastewater washed off can then fall into the scum scraping area for secondary scum removal. Since the cleaning cycle is fixed and the water volume is small, it will not cause fluctuations in the liquid level in the scum scraping area.

[0015] Furthermore, a corrosion-resistant rubber block is fixed to the end of the scraper away from the scraper mounting seat.

[0016] The above solution uses corrosion-resistant rubber blocks to avoid wear caused by hard contact between the guide plate and the scraper, while also being resistant to corrosion from scum, thus extending the service life of the guide plate and the scraper.

[0017] Furthermore, the corrosion-resistant rubber block has several micropores.

[0018] The above solution reduces the resistance experienced by the scraper during the slag removal process through micropores, and the micropores only allow water to pass through, while slag cannot pass through or enter.

[0019] Furthermore, the main body of the scraper mounting base is U-shaped.

[0020] The above solution aims to further improve the load-bearing capacity and stability of the scraper mounting base.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] Compared to existing technologies, this device allows for manual fine-tuning of the scraper height as needed, enabling the scraper to contact the scum on the surface of the liquid in the scraping area for removal. It can also contact the guide plate, allowing the scum to be efficiently pushed into the scum storage area. This addresses errors caused by various uncontrollable factors, resulting in better scum scraping performance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 Schematic diagrams of elongated holes and round holes;

[0025] Figure 3 for Figure 2 Enlarged view of section A (labeled A);

[0026] Figure 4 Schematic diagram of the automatic flushing assembly installation;

[0027] Figure 5 This is a schematic diagram of the installation of corrosion-resistant rubber blocks;

[0028] Figure 6 Schematic diagram of micropore opening

[0029] Figure label:

[0030] 1. Chain drive assembly; 101. Guide plate; 2. Mounting block; 3. Scraper mounting seat; 4. Scraper; 5. Long strip hole; 6. Round hole; 7. Fixing bolt; 8. Mounting bracket; 9. Suction pump; 10. Rinsing box; 11. Side nozzle; 12. Lower nozzle; 13. Corrosion-resistant rubber block; 14. Micropores. Detailed Implementation

[0031] 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 a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0032] like Figures 1 to 3 As shown, an adjustable scraper height air flotation slag scraping device is used in an air flotation machine. It includes a chain drive assembly 1, a mounting block 2, a scraper mounting seat 3, a scraper 4, an elongated hole 5, a round hole 6, and fixing bolts 7.

[0033] Several sets of mounting blocks 2 are fixed on the chain of the chain drive assembly 1;

[0034] The scraper mounting base 3 is fixed on a set of mounting blocks 2, and several elongated holes 5 are horizontally opened on the scraper mounting base 3;

[0035] The scraper 4 has several round holes 6 that correspond one-to-one with the elongated holes 5 and are distributed in a straight line.

[0036] Several sets of fixing bolts 7 pass through several sets of round holes 6 and elongated holes 5 in sequence to finely adjust the height position of the scraper 4.

[0037] In a further optimization of the embodiment of this utility model, the main body of the scraper mounting base 3 is U-shaped to further improve its load-bearing capacity and stability.

[0038] The working process of this utility model:

[0039] Due to uncontrollable factors such as slight changes in the liquid level in the slag scraping area or positional deviations of the scraper 4 during initial installation, the liquid level in the flotation tank may differ from the design, or the scraper 4 may fail to contact the guide plate 101. This can lead to the scraper 4 failing to scrape the slag or failing to contact the guide plate 101 to push the scraped slag to the slag storage area. The specific cooperation between the guide plate 101 and the scraper 4, as well as the pushing and collection of slag into the slag storage area, are all prior art and will not be described in detail in this application.

[0040] When it is found that the scraper 4 cannot contact the scum on the liquid surface or the scraper 4 cannot contact the guide plate 101, the chain drive assembly 1 is stopped first. Then, the installation of multiple sets of fixing bolts 7 can be released in sequence, so that the scraper 4 is temporarily separated from the scraper mounting seat 3. Then, the vertical height of the scraper 4 can be finely adjusted within the area reserved in the elongated hole 5. After the adjustment is completed, the fixing bolts 7 are passed through the round hole 6 and the elongated hole 5 in sequence to change the installation position of the scraper 4, so that it can contact the liquid surface in the scum scraping area and the guide plate 101 to efficiently complete the scum collection work. If multiple sets of scrapers 4 are designed, they can be adjusted in sequence. Three sets are preferred.

[0041] Compared to existing technologies, this device allows for manual fine-tuning of the height of the scraper 4 as needed, enabling the scraper 4 to contact the scum on the surface of the liquid in the scraping area for scraping. It can also contact the guide plate 101, allowing the scum to be efficiently pushed into the scum storage area. This addresses errors caused by various uncontrollable factors, resulting in better scum scraping performance.

[0042] In some embodiments, such as Figure 4 As shown, the air flotation machine is equipped with an automatic rinsing component located on one side of the chain drive assembly 1, and the automatic rinsing component and the scraper 4 are distributed at intervals (the air flotation machine is not shown in the figure, and the mixing and aeration components included therein are not shown and are not modified).

[0043] In a further refinement of the above embodiment, the automatic rinsing component includes a mounting frame 8, a suction pump 9, a rinsing box 10, and nozzles. The mounting frame 8 is mounted on the body of the air flotation machine. The suction pump 9 and the rinsing box 10 are both fixed on the mounting frame 8, and the suction pump 9 is connected to the inside of the rinsing box 10. The rinsing box 10 is equipped with several nozzles (specifically, the nozzles include a lower nozzle 12 and a side nozzle 11). In this embodiment, after the scraper 4 has been operating continuously for a long time, a small amount of scum will remain on its surface. Therefore, there is no need for manual cleaning after the chain drive component 1 stops working. The chain drive component 1 only needs to drive several scrapers 4 to move sequentially to the automatic rinsing component's layout area to rinse their surfaces. The side nozzles 11 and the lower nozzles 12 can clean the scum remaining on the two surfaces of the scraper 4 respectively. The washed-off scum and wastewater can then fall into the scum scraping area for secondary scum removal. Since the cleaning cycle is fixed and the water volume is small, it will not cause fluctuations in the liquid level of the scum scraping area.

[0044] In other embodiments, such as Figure 5 As shown, a corrosion-resistant rubber block 13 is fixed at one end of the scraper 4 away from the scraper mounting seat 3. In this embodiment, the corrosion-resistant rubber block 13 can prevent the guide plate 101 from hard contacting the scraper 4 and causing wear. At the same time, it can also withstand the corrosion of scum, thereby extending the service life of the guide plate 101 and the scraper 4 and not affecting the pushing and dropping of scum.

[0045] In other embodiments, such as Figure 6 As shown, the corrosion-resistant rubber block 13 has several micropores 14. In this embodiment, the resistance of the scraper 4 during the slag scraping process can be reduced through the micropores 14. It should be noted that the micropores 14 only allow water to pass through, and slag cannot pass through or enter.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable scraper height air flotation slag scraping device, applied to an air flotation machine, comprising a chain drive assembly (1), characterized in that, It also includes mounting block (2), scraper mounting seat (3), scraper (4), elongated hole (5), round hole (6) and fixing bolt (7). Several sets of mounting blocks (2) are fixed on the chain of the chain drive assembly (1); The scraper mounting seat (3) is fixed on a set of mounting blocks (2), and several elongated holes (5) are horizontally opened on the scraper mounting seat (3); The scraper (4) has several round holes (6) that correspond one-to-one with the elongated holes (5) and are distributed in a straight line. Several sets of fixing bolts (7) are passed through several sets of round holes (6) and elongated holes (5) in sequence to finely adjust the height position of the scraper (4).

2. The air flotation slag scraping device with adjustable scraper height according to claim 1, characterized in that, The air flotation machine is equipped with an automatic rinsing component located on one side of the chain drive assembly (1), and the automatic rinsing component and the scraper (4) are distributed at intervals.

3. The air flotation slag scraping device with adjustable scraper height according to claim 2, characterized in that, The automatic flushing assembly includes a mounting frame (8), a suction pump (9), a flushing box (10), and nozzles. The mounting frame (8) is mounted on the body of the air flotation machine. The suction pump (9) and the flushing box (10) are both fixed on the mounting frame (8), and the suction pump (9) is connected to the inside of the flushing box (10). Several nozzles are provided on the flushing box (10).

4. The air flotation slag scraping device with adjustable scraper height according to claim 3, characterized in that, The nozzle includes a lower nozzle (12) and a side nozzle (11).

5. The air flotation slag scraping device with adjustable scraper height according to claim 1, characterized in that, A corrosion-resistant rubber block (13) is fixed at one end of the scraper (4) away from the scraper mounting seat (3).

6. The air flotation slag scraping device with adjustable scraper height according to claim 5, characterized in that, The corrosion-resistant rubber block (13) has several micropores (14).

7. The air flotation slag scraping device with adjustable scraper height according to claim 1, characterized in that, The main body of the scraper mounting base (3) is U-shaped.

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