A skimming device for a floatation machine

Abstract

The application relates to a floating machine slag scraping device and relates to the field of sewage treatment equipment. The device comprises a frame, a driving mechanism and a plurality of scrapers. The frame is a square frame structure. The driving mechanism comprises a driving shaft, a driven shaft, a plurality of chain wheels, a chain and a motor. The driving shaft and the driven shaft are rotationally connected to the frame. The motor drives the driving shaft to rotate. The driving shaft and the driven shaft are provided with the chain wheels. The chain is sleeved on the chain wheels on the driving shaft and the driven shaft. The plurality of scrapers are arranged along the length direction of the chain. The driving shaft drives the chain wheels and the scrapers to rotate. The application has the effect that the slag scraper can be detachably connected to a sewage treatment tank.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment equipment, and in particular to a sludge scraping device for an air flotation machine. Background Technology

[0002] In wastewater treatment, dissolved air flotation (DAF) machines are frequently used to purify wastewater. The DAF machine is installed in a water purification tank. When wastewater is poured into the tank, the DAF machine introduces gas into the wastewater and forms microbubbles. These microbubbles rise from the wastewater to the surface of the water, causing the sludge in the wastewater to float to the surface as well. At this point, a sludge scraper can be used to scrape off the sludge from the surface of the water, thus achieving the effect of purifying the water.

[0003] The existing scum scraper includes a drive mechanism and multiple scrapers. The drive mechanism includes a drive shaft, a driven shaft, multiple sprockets, a chain, and a motor. The drive shaft and the driven shaft are rotatably connected to the top surface of the water purification tank. The sprockets are fixed on the drive shaft and the driven shaft respectively. The chain is sleeved on the sprockets of the drive shaft and the driven shaft. The multiple scrapers are fixed on the chain. The motor drives the drive shaft to rotate, which in turn causes the chain to rotate, thereby causing the scrapers to move on the water purification tank and scrape off the scum on the surface of the water.

[0004] The aforementioned technical solutions have the following drawbacks: during wastewater treatment, it is necessary to install the sludge scraper on the water purification tank that stores different water bodies and carry out the sludge scraping process. After the sludge scraper is installed on the water purification tank, it is difficult to install and remove, causing inconvenience. Utility Model Content

[0005] In order to enable the sludge scraper to be detachably connected to the sewage treatment tank, this application provides a sludge scraper device for an air flotation machine.

[0006] The slag scraping device for an air flotation machine provided in this application adopts the following technical solution:

[0007] A slag scraping device for an air flotation machine includes a frame, a drive mechanism, and multiple scrapers. The frame has a square frame structure. The drive mechanism includes a drive shaft, a driven shaft, multiple sprockets, a chain, and a motor. The drive shaft and the driven shaft are rotatably connected to the frame. The motor drives the drive shaft to rotate. Sprockets are provided on both the drive shaft and the driven shaft. The chain is sleeved on the sprockets on the drive shaft and the driven shaft. Multiple scrapers are spaced apart along the length of the chain. The drive shaft drives the sprockets and scrapers to rotate.

[0008] By adopting the above technical solution, and by setting a drive mechanism on the frame and a scraper on the drive mechanism, the user can cover the frame on different sewage treatment tanks, thereby making the scraping device detachably connected to the sewage treatment tank. The user can remove the scraping mechanism from the sewage treatment tank for easy cleaning of the scraper.

[0009] Optionally, a slag collection cylinder is provided on one side of the frame, and the scraper flips on the upper side of the slag collection cylinder when it moves with the chain.

[0010] By adopting the above technical solution, a scum collection cylinder is set on one side of the frame. When the scraper moves with the chain, the scraper can move horizontally on the water surface, thereby scraping off the scum on the water surface. When the scraper moves to the side of the drive shaft, the scraper can be lifted upward. During the lifting process, the scum on the scraper surface can be poured into the scum collection cylinder. The scum collection cylinder is located outside the sewage treatment tank. Users can set up a box below the scum collection cylinder to facilitate quick collection of scum.

[0011] Optionally, a guide rail is provided on the inner wall of the frame, and inclined surfaces are provided on both sides of the guide rail, with the end of the scraper contacting the surface of the guide rail.

[0012] By adopting the above technical solution, a guide rail is set on the frame so that the edge of the scraper abuts against the guide rail. When the scraper moves with the guide rail, it can move along the inclined surface at the end of the guide rail, so that the scraper can fall and extend into the water surface. This results in a larger range of movement for the scraper, which can scrape off the scum below the water surface and improve the purification quality.

[0013] Optionally, the scraper end is rotatably connected to a pulley, which is used to roll on the guide rail surface.

[0014] By adopting the above technical solution, by setting a pulley at the end of the scraper, the pulley abuts against the surface of the guide rail and slides in connection with the guide rail. When the scraper slides on the guide rail, the friction between the scraper and the guide rail can be reduced.

[0015] Optionally, the frame is provided with a sliding groove, the driven shaft is inserted into the sliding groove and slidably connected to the frame, and the frame is provided with a tensioning device for adjusting the distance between the driving shaft and the driven shaft.

[0016] By adopting the above technical solution, a groove is opened on the frame, and the driven shaft is slidably connected in the groove. By sliding the driven shaft, the distance between the driving shaft and the driven shaft can be adjusted, so that the chain can be kept taut on the sprocket and stably meshed.

[0017] Optionally, the tensioning device includes a fixed plate, a slider, a screw, and a fixing nut. The fixed plate is fixed to the frame, the slider is rotatably connected to the end of the driven shaft, the screw passes through the fixed plate, the end of the screw is connected to the slider, and the fixing nut is threaded onto the screw.

[0018] By adopting the above technical solution, and by setting a screw on the fixed plate, the user can adjust the distance between the fixed plate and the slide bar by adjusting the position of the fixing nut on the screw, thereby adjusting the position of the driven shaft in the slide groove and keeping the chain taut.

[0019] Optionally, multiple limiting rings are provided on the drive shaft and the driven shaft, and the limiting rings are fixed on both sides of the sprocket.

[0020] By adopting the above technical solution, by setting limit rings on the drive shaft and driven shaft, the limit rings can be locked on both sides of the sprocket, thereby reducing the probability of the sprocket slipping on the drive shaft or driven shaft.

[0021] Optionally, the chain is provided with multiple base plates, and the scraper is detachably connected to the base plates.

[0022] By adopting the above technical solution, and by setting a base plate on the chain, the scraper can be detachably connected to the base plate. Users can install scrapers of different lengths on the base plate, so that the sludge scraping device can be set on sewage treatment tanks of different sizes and perform sludge scraping operations.

[0023] In summary, the beneficial technical effects of this application are as follows:

[0024] 1. By setting a drive mechanism on the frame and a scraper on the drive mechanism, the user can cover the frame on different sewage treatment tanks, so that the scraping device can be detachably connected to the sewage treatment tank. The user can remove the scraping mechanism from the sewage treatment tank for easy cleaning of the scraper.

[0025] 2. By setting guide rails on the frame, the edge of the scraper abuts against the guide rails. When the scraper moves with the guide rails, it can move along the inclined surface at the end of the guide rails, so that the scraper can fall and extend below the water surface. This makes the scraper's range of movement larger, which can scrape out the scum below the water surface and improve the purification quality.

[0026] 3. By setting a screw on the fixed plate, the user can adjust the distance between the fixed plate and the slide bar by adjusting the position of the fixing nut on the screw, thereby adjusting the position of the driven shaft in the slide groove and keeping the chain taut. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 1 .

[0028] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 2 .

[0029] Figure 3 This is a cross-sectional view of the overall structure of an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the scraper structure according to an embodiment of this application.

[0031] Figure 5 This is a schematic diagram of the tensioning device according to an embodiment of this application.

[0032] Reference numerals in the attached drawings: 1. Frame; 11. Guide rail; 12. Slide groove; 2. Drive mechanism; 21. Drive shaft; 22. Driven shaft; 23. Sprocket; 24. Chain; 25. Motor; 26. Limiting ring; 3. Scraper; 31. Pulley; 32. Base plate; 4. Tensioning device; 41. Fixing plate; 42. Slider; 43. Screw; 44. Fixing nut; 5. Slag collection cylinder. Detailed Implementation

[0033] The present application will be further described in detail below with reference to the accompanying drawings.

[0034] This application discloses a slag scraping device for an air flotation machine, referring to... Figure 1 , Figure 2 and Figure 3 The system includes a frame 1, a drive mechanism 2, and multiple scrapers 3. The frame 1 is a rectangular structure. The drive mechanism 2 is mounted on the frame 1, and the multiple scrapers 3 are mounted on the drive mechanism 2. The frame 1 is used to horizontally cover the top of the water purification tank. The drive mechanism 2 is used to drive the scrapers 3 to move in a straight line. The scrapers 3 are used to move horizontally and scrape off the scum on the surface of the water in the water purification tank. When an air flotation machine is installed in the water purification tank, the air flotation machine generates a large number of bubbles in the water, which causes the bubbles to carry the scum in the water to rise to the surface of the water. At this time, the movement of the scrapers 3 can scrape the scum off the surface of the water.

[0035] Reference Figure 1 , Figure 2 and Figure 3 The drive mechanism 2 includes a drive shaft 21, a driven shaft 22, multiple sprockets 23, multiple chains 24, and a motor 25. The drive shaft 21 passes through the frame 1 and is rotatably connected to the frame 1. The driven shaft 22 is rotatably connected to the frame 1. The multiple sprockets 23 are fixed on the drive shaft 21 and the driven shaft 22. The chains 24 are sleeved on the sprockets 23 of the drive shaft 21 and the driven shaft 22. The housing of the motor 25 is fixed to the frame 1. The output shaft of the motor 25 is coaxially connected to the drive shaft 21. The motor 25 drives the drive shaft 21 to rotate, which in turn causes the chains 24 to rotate on the frame 1. By equidistantly spaced scrapers 3 along the length of the chains 24, the chains 24 drive the scrapers 3 to move and scrape off the scum on the surface of the water.

[0036] Reference Figure 1 Multiple limiting rings 26 are provided on the drive shaft 21 and the driven shaft 22. The limiting rings 26 are located on both sides of the sprocket 23. The limiting rings 26 have a limiting effect and can reduce the slippage of the sprocket 23 on the drive shaft 21 or the driven shaft 22.

[0037] Reference Figure 3A guide rail 11 is provided on the frame 1, and the guide rail 11 is set on the inner walls of opposite sides of the frame 1. The length direction of the guide rail 11 is perpendicular to the length direction of the drive shaft 21. The guide rail 11 has inclined surfaces at both ends. When the scraper 3 moves to the guide rail 11, the edge of the scraper 3 contacts the inclined surface at the end of the guide rail 11, so that the movement path of the scraper 3 is first inclined downward and then horizontal, so that the scraper 3 can fall below the water surface and scrape off the scum, thereby improving the water purification effect.

[0038] Reference Figure 4 The scraper 3 has pulleys 31 at both ends, which are rotatably connected to the scraper 3 and are used to roll on the surface of the guide rail 11. When the motor 25 drives the scraper 3 to move, the pulleys 31 rotate on the guide rail 11, which can reduce the friction between the scraper 3 and the guide rail 11.

[0039] Reference Figure 4 Multiple base plates 32 are provided on the chain 24. The base plates 32 are connected to the multiple chains 24. The multiple base plates 32 are equidistantly spaced along the length of the chain 24. The scraper 3 is detachably connected to the base plate 32 by snap-fit ​​or bolt, thereby making the scraper 3 detachably connected to the chain 24, which can adjust the number and density of scrapers 3 on the chain 24.

[0040] Reference Figure 5 The driven shaft 22 is slidably connected to the frame 1. The frame 1 has a groove 12, into which the driven shaft 22 is inserted. The length of the groove 12 coincides with the line connecting the drive shaft 21 and the driven shaft 22. The driven shaft 22 can slide within the groove 12, thereby adjusting the distance between the sprockets 23 on the drive shaft 21 and the driven shaft 22, so that the chain 24 can always be tensioned on the sprockets 23. A tensioning device 4 is provided on the frame 1. The tensioning device 4 includes a fixed plate 41, a slider 42, a screw 43, and a fixing nut 44. The fixed plate 41 is fixed to the outside of the frame 1. The slider 42 is slidably connected to the end of the driven shaft 22. The screw 43 passes through the fixed plate 41, and the end of the screw 43 is threadedly connected to the slider 42. The fixed plate 41 is located on the side of the slider 42 away from the drive shaft 21. The fixing nut 44 is threaded onto the screw 43 and is locked onto the fixing plate 41, thereby controlling the position of the slider 42 and enabling the drive shaft 21 and driven shaft 22 to keep the chain 24 taut at all times.

[0041] Reference Figure 3 A slag collection cylinder 5 is installed on the frame 1, located at one end of the frame 1. When the frame 1 is horizontally placed over the water purification tank, the slag collection cylinder 5 is secured to the outer wall of the inlet tank. When the scraper 3 moves to rotate along the outer wall of the sprocket 23, the scraper 3 can flip and pour the scraped slag into the slag collection cylinder 5. The slag collection cylinder 5 has a cylindrical structure, allowing users to install a box below the slag collection cylinder 5 to collect the slag.

[0042] The implementation principle of this application embodiment is as follows: By setting a drive mechanism 2 on the frame 1, the drive mechanism 2 can drive the scraper 3 to move, thereby scraping the scum off the surface of the water. By sliding the driven shaft 22 on the frame 1, the user can adjust the distance between the drive shaft 21 and the driven shaft 22 through the tensioning device 4, thereby keeping the chain 24 taut. By setting a guide rail 11 on the frame 1, the scraper 3 is guided by the guide rail 11 when it moves, thereby allowing the scraper 3 to fall and insert into the surface of the water, thereby increasing the range of scum scraped off and improving the water purification effect.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A slag scraping device for an air flotation machine, characterized in that: The device includes a frame (1), a drive mechanism (2), and multiple scrapers (3). The frame (1) is a square frame structure. The drive mechanism (2) includes a drive shaft (21), a driven shaft (22), multiple sprockets (23), a chain (24), and a motor (25). The drive shaft (21) and the driven shaft (22) are rotatably connected to the frame (1). The motor (25) drives the drive shaft (21) to rotate. Sprockets (23) are provided on both the drive shaft (21) and the driven shaft (22). The chain (24) is sleeved on the sprockets (23) on the drive shaft (21) and the driven shaft (22). Multiple scrapers (3) are spaced apart along the length of the chain (24). The drive shaft (21) drives the sprockets (23) and the scrapers (3) to rotate.

2. The slag scraping device for an air flotation machine according to claim 1, characterized in that: A slag collection cylinder (5) is provided on one side of the frame (1), and the scraper (3) flips on the upper side of the slag collection cylinder (5) when it moves with the chain (24).

3. The slag scraping device for an air flotation machine according to claim 1, characterized in that: The inner wall of the frame (1) is provided with a guide rail (11), and the guide rail (11) has inclined surfaces on both sides. The end of the scraper (3) is in contact with the surface of the guide rail (11).

4. The slag scraping device for an air flotation machine according to claim 3, characterized in that: The scraper (3) is rotatably connected to a pulley (31) at its end, and the pulley (31) is used to roll on the surface of the guide rail (11).

5. The slag scraping device for an air flotation machine according to claim 1, characterized in that: The frame (1) is provided with a sliding groove (12), the driven shaft (22) is inserted into the sliding groove (12) and slidably connected to the frame (1), and the frame (1) is provided with a tensioning device (4), which is used to adjust the distance between the driving shaft (21) and the driven shaft (22).

6. The slag scraping device for an air flotation machine according to claim 5, characterized in that: The tensioning device (4) includes a fixed plate (41), a slider (42), a screw (43) and a fixing nut (44). The fixed plate (41) is fixed on the frame (1), the slider (42) is rotatably connected to the end of the driven shaft (22), the screw (43) passes through the fixed plate (41), the end of the screw (43) is connected to the slider (42), and the fixing nut (44) is threaded onto the screw (43).

7. The slag scraping device for an air flotation machine according to claim 1, characterized in that: Multiple limiting rings (26) are provided on the drive shaft (21) and driven shaft (22), and the limiting rings (26) are fixed on both sides of the sprocket (23).

8. The slag scraping device for an air flotation machine according to claim 1, characterized in that: The chain (24) is provided with multiple base plates (32), and the scraper (3) is detachably connected to the base plate (32).

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