Aeration structure of air floatation machine and air floatation machine

Abstract

According to the aeration structure of the air flotation machine and the air flotation machine, tiny bubbles are generated through a plurality of aeration discs with different heights and different directions, the tiny bubbles can be distributed in all areas in a contact box body, flocculating constituents and the tiny bubbles are fully bonded, more scum is generated, and therefore the sewage treatment efficiency is improved, and the service life of the air flotation machine is prolonged. The sewage treatment effect is better. The device is characterized by comprising a contact box body, a blow-off pipe, an air blower, an air inlet pipe, a transmission pipe, a transmission branch pipe, an aeration pipe, a threaded sleeve, a support column, an aeration disc and aeration holes, the air blower is positioned on the outer side of the contact box body, one end of the air inlet pipe is connected with an air outlet of the air blower and is communicated with the air outlet of the air blower, and the other end of the air inlet pipe is communicated with the transmission branch pipe. The transmission pipe is arranged in the middle of the inner bottom face of the contact box body, the transmission pipe is of a structure with one end closed, and the other end of the air inlet pipe penetrates through a through hole formed in the bottom of one side face of the contact box body and is arranged at the other end of the transmission pipe.

Description

Technical Field

[0001] The present invention discloses an aeration structure of an air flotation machine and an air flotation machine, which relate to an aeration structure that produces more scum, and belong to the technical field of sewage treatment, and particularly to an aeration structure that produces microbubbles by using a plurality of aeration disks with different heights and directions, and can distribute the microbubbles in various areas in a contact box, so that flocculants and the microbubbles are fully bonded, and more scum is produced, thereby improving sewage treatment efficiency and achieving a better sewage treatment effect. Background Art

[0002] Air flotation machine is a kind of equipment used for water treatment, mainly used in chemical plants, drinking water treatment, industrial wastewater treatment and other fields. Its working principle is to inject air or other gases into the water to generate a large number of tiny bubbles, and use these bubbles to adsorb impurities such as suspended matter, grease, etc. that are difficult to remove by natural sedimentation or floating in the water, so that they float on the water surface, thereby achieving solid-liquid separation. The traditional air flotation machine mainly includes components such as dosing device, dissolved air system, air flotation tank and scraping mechanism. The sewage first enters the reaction tank and mixes with the added flocculant to produce flocculation reaction, and then enters the contact tank to combine with the tiny bubbles in the dissolved air water to form floccules, enter the separation tank and float to the water surface to form scum, and finally the scum is scraped into the scum collection tank by the scraping mechanism for discharge. However, in traditional flotation machines, flocculants are added into the reaction tank through a dosing device. When the flocculants are added, they only exist in a certain position of the reaction tank, and the addition is uneven. Since the sewage continuously flows into the reaction tank at a certain flow rate, the sewage and the flocculant cannot fully contact each other before entering the next link, so that part of the sewage cannot be flocculated and floccules cannot be produced, resulting in low sewage treatment efficiency and poor treatment effect; and the tiny bubbles generated in the dissolved air system are also only concentrated in a certain position of the contact tank and cannot quickly diffuse to various areas of the contact tank, resulting in some floccules cannot be fully bonded with the tiny bubbles and cannot produce scum, resulting in low sewage treatment efficiency and poor treatment effect.

[0003] Announcement No. CN217895336U discloses a flotation machine with a sludge dewatering device, including an equipment body, the equipment body is divided into a dosing pretreatment unit, a flotation reaction treatment unit and a sludge dewatering treatment unit by a stainless steel partition, the dosing pretreatment unit includes a coagulant dosing reaction zone and a coagulant dosing reaction zone, the flotation reaction treatment unit is provided with a perforated water distribution pipeline, a dissolved air releaser, a mud discharge pipeline, an emptying pipeline, a slag scraping device, and a slag collection tank, and the sludge dewatering treatment unit includes a dehydration rotating motor and a dewatering tank. The above-mentioned flotation machine is provided with a coagulant dosing reaction zone agitator and a coagulant dosing reaction agitator, which can promote the full contact between sewage and flocculants and produce more floccules, but the tiny bubbles generated by the dissolved air tank in the above-mentioned flotation machine are only concentrated at a certain position of the equipment body through the dissolved air releaser, and cannot be quickly diffused to various areas of the equipment body, resulting in that some floccules cannot be fully bonded with the tiny bubbles and cannot produce slag, thereby resulting in low sewage treatment efficiency and poor treatment effect.

[0004] In order to improve the above problems, the applicant filed a Chinese invention patent application entitled "A flotation machine". The second rotating motor drives the support rod to rotate, and the support rod drives the rotating disc and the rotating blades to rotate, so that the tiny bubbles generated by the disc aerator are distributed in various areas in the contact box, so that the flocculants and the tiny bubbles are fully bonded. However, the disc aerator in the flotation machine is arranged at the bottom of the contact box. Even with the stirring of the rotating blades, the density of the tiny bubbles at the bottom of the contact box is still greater than the density of the tiny bubbles in the middle and upper parts. Moreover, the rotating blades are located in the middle of the contact box, which has a good stirring effect on the tiny bubbles in the middle of the contact box, but a poor stirring effect on the tiny bubbles in the edge area of ​​the contact box, resulting in that some flocculants cannot be fully bonded with the tiny bubbles and cannot produce scum, thereby resulting in low sewage treatment efficiency and poor treatment effect. Summary of the invention

[0005] In order to improve the above situation, the present invention provides an aeration structure of a flotation machine and an air flotation machine, which provides a structure that generates tiny bubbles through multiple aeration plates with different heights and directions, and can distribute the tiny bubbles in various areas in the contact box, so that the flocculants and the tiny bubbles are fully bonded, and more scum is generated, thereby improving the sewage treatment efficiency and achieving a better sewage treatment effect.

[0006] The present invention provides an aeration structure of an air flotation machine and an air flotation machine as follows: The present invention provides an aeration structure of an air flotation machine, which is composed of a contact box, a sewage pipe, a blower, an air inlet pipe, a transmission pipe, a transmission branch pipe, an aeration pipe, a threaded sleeve, a support plate, an aeration plate and an aeration hole. The blower is located outside the contact box. One end of the air inlet pipe is connected to the air outlet of the blower and communicates with the air outlet of the blower. The transmission pipe is placed in the middle of the inner bottom surface of the contact box. The transmission pipe is a structure with one end closed. Preferably, the length of the transmission tube is equal to the length of one side of the contact box. The other end of the air inlet pipe passes through a through hole at the bottom of one side of the contact box and is placed at the other end of the transmission pipe, and is connected to the other end of the transmission pipe. The transmission branch pipe is located above the transmission pipe. One end of the transmission branch pipe is vertically placed on the side of the transmission pipe. Preferably, there are multiple transmission branch pipes, and the multiple transmission branch pipes are arranged equidistantly along the length direction of the side surface of the transmission pipe. One end of the aeration pipe is placed on the side of the transmission branch pipe and is connected to the transmission branch pipe. Preferably, there are multiple groups of aeration tubes, and the other ends of the multiple groups of aeration tubes have different heights. There are multiple aeration tubes in each group, and the other ends of the multiple aeration tubes in the same group extend from the connection with the side of the transmission branch pipe to different directions of the contact box. The multiple aeration tubes in the same group have the same height and different lengths. The other end of the aeration pipe is placed on the bottom surface of the support plate through a threaded sleeve and is connected to the support plate. The support plate is a hollow cylindrical structure with an open upper end. The aeration plate is placed on the top surface of the support plate. Preferably, the aeration plate is detachably placed on the top surface of the support plate. Preferably, the aeration plate is a structure that is bent in an arc shape multiple times from the center to the edge. The aeration plate is provided with aeration holes. Preferably, there are multiple groups of aeration holes, and the multiple groups of aeration holes are arranged in a staggered and equidistant manner from the center to the edge of the aeration plate. Each group of aeration holes has multiple aeration holes, and the multiple aeration holes in the same group are arranged equidistantly along the circumference of the aeration plate. Preferably, the density of the aeration holes in the center of the aeration disk is greater than that at the edge. Preferably, the density of the aeration holes on the aeration plates with a lower height in each group is greater than the density of the aeration holes on the aeration plates with a higher height in each group, and the density of the aeration holes on the aeration plates with a higher height in each group, near the edge of the contact box, is greater than the density of the aeration holes on the aeration plates near the transverse center axis of the contact box. One end of a sewage pipe is disposed on the side of the contact box, and one end of the sewage pipe is connected to the contact box. One end of the sewage pipe is close to the top surface of the contact box. Furthermore, the aeration plate is replaced with an arc-shaped aeration plate, the height of which gradually decreases from the center to the edge, and the density of aeration holes in the center of the arc-shaped aeration plate is greater than that at the edge; Furthermore, the connection between the aeration plate and the support plate is provided with a fixing sleeve. Preferably, a sealing ring is disposed on the inner side of the fixing sleeve; The present invention also relates to an air flotation machine, which is composed of a separation component, a contact component and a flocculation component. The separation assembly is composed of a separation tank, a water outlet pipe, a filter screen, a slag discharge port, a slag collection tank, a support frame, a first connecting rod, a second connecting rod, a scraper plate, a third rotating motor and a support column. The separation tank is an arched structure with an open top. The slag collecting pool is a fan-shaped structure with an opening at the top. The two ends of the separation tank are in contact with the two ends of the slag collecting tank respectively, and the separation tank and the slag collecting tank form a ring structure. The top height of the separation tank is greater than or equal to the top height of the slag collection tank. The bottom surface of the slag collecting pool is provided with a slag discharge port. A plurality of support columns are located in the middle of the annular structure, and one end of each support column is inserted into the ground. Preferably, the plurality of support columns are arranged equidistantly along the circumference of the middle portion of the annular structure. The bottom of the support frame is placed at the other end of the plurality of support columns. The support frame is a hollow circular ring structure composed of a plurality of supporting round rods, and the middle part of the top surface of the support frame is a disc-shaped structure. The third rotating motor is placed in the middle of the top surface of the support frame, One end of the first connecting rod is connected to the motor shaft of the third rotating motor, The angle between one end of the first connecting rod and the motor shaft of the third rotating motor is 90 degrees. The other end of the first connecting rod is vertically placed on one end of the second connecting rod. The scraper plate is laterally located in the separation tank, and the bottom height of the scraper plate is greater than or equal to the top height of the slag collecting tank. Preferably, the two ends of the scraper plate are in contact with the two inner side surfaces of the separation tank respectively. The other end of the second connecting rod is placed on the top surface of the scraper plate. Preferably, the second connecting rod is a retractable structure. One end of the water outlet pipe is placed on one side of the separation tank and is connected to the separation tank. The filter screen is placed at one end of the water outlet pipe, and the diameter of the filter screen is equal to the inner diameter of the water outlet pipe. The contact assembly is composed of a contact box, a blower, an air inlet pipe, a connecting pipe, an air inlet branch pipe, a disc aerator, a second rotating motor, a support rod, a rotating disc, rotating blades and a sewage pipe. The contact box is located in the middle of the plurality of support columns. The second rotating motor is placed in the middle of the inner bottom surface of the contact box. The support rod is located in the contact box. The length of the support rod is smaller than the height of the contact box. One end of the support rod is connected to the motor shaft of the second rotating motor, A rotating disc is sleeved on the side of the support rod. Preferably, there are multiple rotating discs, and the multiple rotating discs are arranged equidistantly along the length direction of the support rod. The side of the rotating disc is provided with rotating blades. Preferably, there are a plurality of rotating blades, and the plurality of rotating blades are arranged equidistantly along the circumferential direction of the side surface of the rotating disk. Preferably, the rotating blades are of arc-shaped structure. The blower is located outside the contact box. One end of the air inlet pipe is connected to the air outlet of the blower and communicates with the air outlet of the blower. The connecting pipe is placed on the inner bottom surface of the contact box. The connecting pipe is a closed structure at both ends. Preferably, the connecting pipe is parallel to a side surface of the contact box and close to a side surface of the contact box. Preferably, the length of the connecting pipe is equal to the length of one side of the contact box. The other end of the air inlet pipe passes through a through hole opened at the bottom of one side of the contact box and is placed on the side of one end of the connecting pipe, and is connected to the side of one end of the connecting pipe. One end of the intake branch pipe is vertically placed on the side of the connecting pipe. The air intake branch pipe is a structure with a closed end. Preferably, there are multiple intake branch pipes, and the multiple intake branch pipes are arranged equidistantly along the length direction of the side surface of the connecting pipe. Preferably, the length of the air intake branch pipe is equal to the length of the other side of the contact box. The disc aerator is placed on the top side of the air inlet branch pipe. Preferably, there are a plurality of the disc aerators, and the plurality of the disc aerators are arranged equidistantly along the length direction of the air inlet branch pipe. One end of a sewage pipe is disposed on the side of the contact box, and one end of the sewage pipe is connected to the contact box. One end of the sewage pipe is close to the top surface of the contact box. The other end of the sewage pipe passes through a through hole opened on the other side of the separation tank and is located on the inner bottom surface of the separation tank. The flocculation assembly is composed of a first rotating motor, a dosing hopper, a sewage inlet pipe, a rotating rod, a spiral blade, a flocculation box and a water outlet. The flocculation box is placed on the top surface of the contact box. One end of the dosing hopper is placed on the top surface of the flocculation box and is connected to the flocculation box. Preferably, the diameter of the dosing hopper remains unchanged from one end to one third of the diameter, and gradually increases from one third of the diameter to the other end. The first rotating motor is placed in the middle of the top surface of the flocculation box. The rotating rod is placed in the flocculation box. One end of the rotating rod is connected to the motor shaft of the first rotating motor through a through hole opened in the middle of the flocculation box. The length of the rotating rod is smaller than the height of the flocculation box. The spiral blade is placed on the side of the rotating rod. Preferably, the length of the spiral blade is equal to the length of the rotating rod. Preferably, a plurality of spoiler protrusions are evenly arranged on the spiral blade. One end of the sewage inlet pipe is placed on one side of the flocculation box and is connected to the flocculation box. The bottom surface of the flocculation box is provided with a water outlet hole, and the water outlet hole is located at the side of the bottom surface of the flocculation box; Furthermore, the rotating blades are provided with flow-turbulating holes; Preferably, there are multiple groups of spoiler holes, and the multiple groups of spoiler holes are equidistantly arranged along the length direction of the rotating blade. There are multiple spoiler holes in each group, and the multiple spoiler holes are equidistantly arranged along the width direction of the rotating blade. Furthermore, the rotating blades are provided with spoiler strips; Preferably, the length of the spoiler strip is equal to the width of the rotating blade, there are a plurality of spoiler strips, and each of the spoiler strips is located between two adjacent groups of spoiler holes. Beneficial Effects

[0007] 1. Multiple aeration plates with different heights and directions generate tiny bubbles, which can be distributed in various areas of the contact box, so that the flocculants and tiny bubbles can be fully bonded, and more scum is generated, thereby improving the sewage treatment efficiency and achieving better sewage treatment effects.

[0008] 2. Simple structure, convenient and practical.

[0009] 3. Low cost and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of an air flotation machine of the present invention; Figure 2 A three-dimensional structural diagram of an air flotation machine of the present invention; Figure 3 This is a three-dimensional structural diagram of an air flotation machine of the present invention, which only shows the structure of the filter screen; Figure 4 This is a three-dimensional structural diagram of an air flotation machine of the present invention, which only shows the internal structures of the flocculation box and the contact box; Figure 5 It is a three-dimensional structural diagram of embodiment 2 of an air flotation machine of the present invention; Figure 6 It is a three-dimensional structural diagram of Example 3 of an air flotation machine of the present invention; Figure 7 A three-dimensional structural diagram of an aeration structure of an air flotation machine according to the present invention; Figure 8 This is a schematic structural diagram of an aeration structure of an air flotation machine according to the present invention; Fig. 9 This is a three-dimensional structural diagram of an aeration structure of an air flotation machine of the present invention, in which only the structure of the aeration holes is shown; Fig.10 It is a three-dimensional structural diagram of Example 2 of an air flotation machine aeration structure of the present invention; Fig.11 It is a three-dimensional structural diagram of Example 3 of an air flotation machine aeration structure of the present invention; Attached photos

[0011] The components include: a separation tank (1), a support frame (2), a first connecting rod (3), a scraper plate (4), a slag discharge port (5), a sewage inlet pipe (6), a slag collecting tank (7), a water outlet pipe (8), a sewage discharge pipe (9), a third rotating motor (10), a first rotating motor (11), a dosing hopper (12), a second connecting rod (13), a supporting column (14), a flocculation box (15), a filter screen (16), a contact box (17), a spiral blade (18), a rotating rod (19), a blower (20), an inlet An air pipe (21), a connecting pipe (22), an air inlet branch pipe (23), a disc aerator (24), a second rotating motor (25), a support rod (26), a rotating disc (27), a rotating blade (28), a water outlet hole (29), a flow disturbance hole (30), a flow disturbance strip (31), a transmission pipe (32), a transmission branch pipe (33), an aeration pipe (34), a threaded sleeve (35), an aeration disc (36), a support disc (37), an aeration hole (38), an arc-shaped aeration disc (39), and a fixing sleeve (40). DETAILED DESCRIPTION Example 1

[0012] The present invention discloses an aeration structure for an air flotation machine, which comprises a contact box (17), a sewage discharge pipe (9), a blower (20), an air inlet pipe (21), a transmission pipe (32), a transmission branch pipe (33), an aeration pipe (34), a threaded sleeve (35), a support plate (37), an aeration plate (36), and an aeration hole (38). The blower (20) is located outside the contact box (17). One end of the air inlet pipe (21) is connected to the air outlet of the blower (20), and is in communication with the air outlet of the blower (20). The transmission pipe (32) is placed in the middle of the inner bottom surface of the contact box (17). The transmission tube (32) is a structure with one end closed. Preferably, the length of the transmission tube (32) is equal to the length of one side of the contact box (17). The other end of the air inlet pipe (21) passes through a through hole opened at the bottom of one side of the contact box (17) and is placed at the other end of the transmission pipe (32), and is connected to the other end of the transmission pipe (32). The transmission branch pipe (33) is located above the transmission pipe (32). One end of the transmission branch pipe (33) is vertically placed on the side of the transmission pipe (32). Preferably, there are a plurality of transmission branch pipes (33), and the plurality of transmission branch pipes (33) are arranged equidistantly along the length direction of the side surface of the transmission pipe (32). One end of the aeration pipe (34) is placed on the side of the transmission branch pipe (33) and is connected to the transmission branch pipe (33). Preferably, there are multiple groups of aeration tubes (34), the other ends of the multiple groups of aeration tubes (34) have different heights, there are multiple aeration tubes (34) in each group, the other ends of the multiple aeration tubes (34) extend from the connection with the side of the transmission branch pipe (33) to different directions of the contact box (17), and the multiple aeration tubes (34) have the same height and different lengths. The other end of the aeration pipe (34) is placed on the bottom surface of the support plate (37) through a threaded sleeve (35) and is connected to the support plate (37). The support plate (37) is a hollow cylindrical structure with an open upper end. The aeration plate (36) is placed on the top surface of the support plate (37). Preferably, the aeration plate (36) is detachably placed on the top surface of the support plate (37). Preferably, the aeration plate (36) is a structure that is bent in an arc shape multiple times from the center to the edge. The aeration plate (36) is provided with aeration holes (38). Preferably, the aeration holes (38) are provided in a plurality of groups, and the plurality of groups of aeration holes (38) are arranged in a staggered and equidistant manner from the center to the edge of the aeration plate (36). Each group of aeration holes (38) has a plurality of aeration holes (38), and the plurality of aeration holes (38) are arranged equidistantly along the circumference of the aeration plate (36). Preferably, the density of the aeration holes (38) opened in the center of the aeration plate (36) is greater than the density at the edge. Preferably, the density of the aeration holes (38) opened on each group of the aeration plates (36) with a lower height is greater than the density of the aeration holes (38) opened on each group of the aeration plates (36) with a higher height, and the density of the aeration holes (38) opened on the aeration plates (36) with a higher height within each group close to the edge of the contact box (17) is greater than the density of the aeration holes (38) opened on the aeration plates (36) with a higher height within each group. One end of a sewage discharge pipe (9) is disposed on the side surface of the contact box (17) in correspondence with each other, and one end of the sewage discharge pipe (9) is connected to the contact box (17). One end of the sewage discharge pipe (9) is close to the top surface of the contact box (17). When in use, the aeration structure replaces the contact assembly in the air flotation machine, and the blower (20) is started. The gas in the blower (20) enters the transmission pipe (32) from the air inlet pipe (21), enters the plurality of transmission branch pipes (33) from the transmission pipe (32), enters the plurality of aeration pipes (34) from the transmission branch pipes (33), and enters the aeration plate (36) from the aeration pipe (34). The aeration plate (36) generates a large number of tiny bubbles, which are evenly distributed in various areas in the contact box (17), so that flocs with a density less than that of water are fully bonded to the tiny bubbles, thereby generating more scum, thereby improving the sewage treatment efficiency and achieving a better treatment effect. Example 2

[0013] The difference between this embodiment and embodiment 1 is that the aeration disk (36) is replaced by an arc-shaped aeration disk (39), the height of the arc-shaped aeration disk (39) gradually decreases from the center to the edge, and the density of the aeration holes (38) opened in the center of the arc-shaped aeration disk (39) is greater than that at the edge; when in use, the surface area of ​​the arc-shaped aeration disk (39) is larger, more micro-bubbles are generated, and the height-varying structure provides more release paths for the micro-bubbles, which can reduce the accumulation of micro-bubbles at the same height, and more micro-bubbles are released from the center, which can increase the contact area between the micro-bubbles and the flocculants, and generate more scum; Example 3

[0014] The difference between this embodiment and the first embodiment is that: a fixing sleeve (40) is provided at the connection between the aeration disc (36) and the support disc (37), and a sealing ring is provided on the inner side of the fixing sleeve (40); when in use, the connection between the aeration disc (36) and the support disc (37) can be made more stable, and the sealing ring can prevent a part of the gas from leaking out of the gap at the connection between the aeration disc (36) and the support disc (37), thereby improving the efficiency of generating micro-bubbles; There are multiple groups of aeration tubes (34), and the other ends of the multiple groups of aeration tubes (34) have different heights. There are multiple aeration tubes (34) in each group, and the other ends of the multiple aeration tubes (34) extend from the connection with the side of the transmission branch pipe (33) to different directions of the contact box (17). The multiple aeration tubes (34) are designed with the same height and different lengths. The multiple aeration tubes (34) of different heights and different directions can cover different areas in the contact box (17), so that the micro-bubbles generated by the aeration disk (36) connected to the aeration tubes (34) can be evenly distributed in different areas of the contact box (17), so that the flocs and the micro-bubbles are fully in contact with each other, and more scum is generated; The aeration plate (36) is detachably placed on the top surface of the support plate (37). After long-term use, the aeration holes (38) on the aeration plate (36) will be blocked by flocculants or sewage in the contact box (17). The detachable connection method makes it easier to clean or replace the aeration plate (36). The aeration holes (38) are provided in a plurality of groups. The plurality of groups of aeration holes (38) are arranged in a staggered and equidistant manner from the center to the edge of the aeration plate (36). Each group of aeration holes (38) has a plurality of aeration holes. The plurality of aeration holes (38) are arranged equidistantly along the circumference of the aeration plate (36). This design enables the aeration holes (38) to cover different areas of the contact box (17), so that the flocculants and micro-bubbles are in full contact, thereby generating more scum. This prevents some of the aeration holes (38) from being blocked by the flocculants or sewage in the contact box (17), resulting in a lack of micro-bubbles in some areas, thereby affecting the generation of scum. The density of the aeration holes (38) opened in the center of the aeration plate (36) is designed to be greater than that of the edges. The aeration holes (38) with a large density in the center can reduce the blockage and flow resistance of micro-bubbles, increase the amount of micro-bubbles released, increase the contact area between micro-bubbles and flocs, and generate more scum. The density of the aeration holes (38) opened on each group of the aeration plates (36) with a lower height is greater than the density of the aeration holes (38) opened on each group of the aeration plates (36) with a higher height. In each group of the aeration plates (36) with a higher height, the density of the aeration holes (38) opened on the aeration plates (36) close to the edge of the contact box (17) is greater than the density of the aeration holes (38) opened on the aeration plates (36) close to the transverse center axis of the contact box (17). This design can increase the amount of tiny bubbles released near the bottom and edge of the contact box (17), ensuring that the flocs near the bottom and edge of the contact box (17) are in contact with more tiny bubbles, thereby generating more scum. The purpose is to generate microbubbles through a plurality of aeration plates (36) at different heights and directions, and to distribute the microbubbles in various areas within the contact box (17), so that the flocculants and the microbubbles are fully bonded, and more scum is generated, thereby improving the sewage treatment efficiency and achieving a better sewage treatment effect.

[0015] It should be noted that the aeration structure is applicable to the following flotation machines: The present invention provides an air flotation machine composed of a separation component, a contact component and a flocculation component. The separation assembly comprises a separation tank (1), a water outlet pipe (8), a filter screen (16), a slag discharge port (5), a slag collection tank (7), a support frame (2), a first connecting rod (3), a second connecting rod (13), a slag scraper (4), a third rotating motor (10) and a support column (14). The separation tank (1) is an arched structure with an open top. The slag collecting pool (7) is a fan-shaped structure with an opening at the top. The two ends of the separation pool (1) are in contact with the two ends of the slag collection pool (7) respectively, and the separation pool (1) and the slag collection pool (7) form a ring structure. The top height of the separation tank (1) is greater than or equal to the top height of the slag collection tank (7), The bottom surface of the slag collecting pool (7) is provided with a slag discharge port (5). A plurality of support columns (14) are located in the middle of the annular structure, and one end of each support column (14) is inserted into the ground. Preferably, the plurality of support columns (14) are arranged equidistantly along the circumference of the middle portion of the annular structure. The bottom of the support frame (2) is placed at the other end of the plurality of support columns (14). The support frame (2) is a hollow circular ring structure composed of a plurality of supporting round rods, and the middle part of the top surface of the support frame (2) is a disc-shaped structure. The third rotating motor (10) is placed in the middle of the top surface of the support frame (2). One end of the first connecting rod (3) is connected to the motor shaft of the third rotating motor (10). The angle between one end of the first connecting rod (3) and the motor shaft of the third rotating motor (10) is 90 degrees. The other end of the first connecting rod (3) is vertically placed on one end of the second connecting rod (13). The scraper plate is laterally located in the separation tank (1), and the bottom height of the scraper plate is greater than or equal to the top height of the slag collecting tank (7). Preferably, the two ends of the scraper plate are in contact with the two inner side surfaces of the separation tank (1) respectively. The other end of the second connecting rod (13) is placed on the top surface of the scraper plate (4). Preferably, the second connecting rod (13) is a retractable structure. One end of the water outlet pipe (8) is placed on a side of the separation tank (1) and is connected to the separation tank (1). The filter screen (16) is placed at one end of the water outlet pipe (8), and the diameter of the filter screen (16) is equal to the inner diameter of the water outlet pipe (8). The contact assembly is composed of a contact box (17), a blower (20), an air intake pipe (21), a connecting pipe (22), an air intake branch pipe (23), a disc aerator (24), a second rotating motor (25), a support rod (26), a rotating disc (27), rotating blades (28) and a sewage discharge pipe (9). The contact box (17) is located in the middle of the plurality of support columns (14). The second rotating motor (25) is placed in the middle of the inner bottom surface of the contact box (17). The support rod (26) is located inside the contact box (17). The length of the support rod (26) is smaller than the height of the contact box (17). One end of the support rod (26) is connected to the motor shaft of the second rotating motor (25). A rotating disc (27) is sleeved on the side of the support rod (26). Preferably, there are a plurality of rotating discs (27), and the plurality of rotating discs (27) are arranged at equal distances along the length direction of the support rod (26). The side of the rotating disc (27) is provided with rotating blades (28). Preferably, there are a plurality of rotating blades (28), and the plurality of rotating blades (28) are arranged equidistantly along the circumferential direction of the side surface of the rotating disk (27). Preferably, the rotating blade (28) is an arc-shaped structure. The blower (20) is located outside the contact box (17). One end of the air inlet pipe (21) is connected to the air outlet of the blower (20), and is in communication with the air outlet of the blower (20). The connecting pipe (22) is placed on the inner bottom surface of the contact box (17). The connecting pipe (22) is a structure with both ends closed. Preferably, the connecting pipe (22) is parallel to a side surface of the contact box (17) and is close to a side surface of the contact box (17). Preferably, the length of the connecting pipe (22) is equal to the length of one side of the contact box (17). The other end of the air inlet pipe (21) passes through a through hole opened at the bottom of one side of the contact box (17) and is placed on the side of one end of the connecting pipe (22), and is connected to the side of one end of the connecting pipe (22). One end of the air intake branch pipe (23) is vertically placed on the side of the connecting pipe (22). The air intake branch pipe (23) is a structure with the other end being closed. Preferably, there are a plurality of the air intake branch pipes (23), and the plurality of the air intake branch pipes (23) are arranged equidistantly along the length direction of the side surface of the connecting pipe (22). Preferably, the length of the air intake branch pipe (23) is equal to the length of the other side surface of the contact box (17). The disc aerator (24) is placed on the top side of the air inlet branch pipe (23). Preferably, there are a plurality of the disc aerators (24), and the plurality of the disc aerators (24) are arranged equidistantly along the length direction of the air inlet branch pipe (23). One end of a sewage discharge pipe (9) is disposed on the side surface of the contact box (17) in correspondence with each other, and one end of the sewage discharge pipe (9) is connected to the contact box (17). One end of the sewage discharge pipe (9) is close to the top surface of the contact box (17). The other end of the sewage discharge pipe (9) passes through a through hole opened on the other side of the separation tank (1) and is located on the inner bottom surface of the separation tank (1). The flocculation assembly is composed of a first rotating motor (11), a dosing hopper (12), a sewage inlet pipe (6), a rotating rod (19), a spiral blade (18), a flocculation box (15), and a water outlet hole (29). The flocculation box (15) is placed on the top surface of the contact box (17). One end of the dosing hopper (12) is placed on the top surface of the flocculation box (15) and is connected to the flocculation box (15). Preferably, the diameter of the dosing hopper (12) remains unchanged from one end to one third of the diameter, and gradually increases from one third of the diameter to the other end. The first rotating motor (11) is placed in the middle of the top surface of the flocculation box (15). The rotating rod (19) is placed in the flocculation box (15). One end of the rotating rod (19) is connected to the motor shaft of the first rotating motor (11) through a through hole opened in the middle of the flocculation box (15). The length of the rotating rod (19) is smaller than the height of the flocculation box (15). The spiral blade (18) is placed on the side of the rotating rod (19). Preferably, the length of the spiral blade (18) is equal to the length of the rotating rod (19). Preferably, a plurality of flow-disturbing protrusions are evenly arranged on the spiral blade (18). One end of the sewage inlet pipe (6) is placed on a side of the flocculation box (15) and is connected to the flocculation box (15). The bottom surface of the flocculation box (15) is provided with a water outlet hole (29), and the water outlet hole (29) is located on the side edge of the bottom surface of the flocculation box (15); Preferably, the air flotation machine is installed on the ground via a bracket, and the support column (14) is inserted into the ground for fixing. When in use, sewage first enters the flocculation box (15) through the sewage inlet pipe (6), and the flocculant is added to the flocculation box (15) from the dosing hopper (12). The first rotating motor (11) is started, and the first rotating motor (11) drives the rotating rod (19) to rotate. The rotating rod (19) drives the spiral blade (18) to rotate, so that the sewage and the flocculant are fully in contact, a flocculation reaction occurs, and floccules are formed; then the floccules and sewage enter the contact box (17) through the water outlet hole (29). The blower (20) is started, and the gas in the blower (20) enters the connecting pipe (22) from the air inlet pipe (21), enters the plurality of air inlet branches (23) from the connecting pipe (22), and enters the aeration generator from the air inlet branches (23). The aeration generator generates a large number of tiny bubbles, and the second rotating motor (25) is started. The second rotating motor (25) drives the support rod (26) to rotate, and the support rod (26) drives the rotating disk (27) and the rotating blades (28) to rotate, so that the tiny bubbles are generated. The bubbles are evenly distributed in various areas in the contact box (17), so that the floccules with a density less than that of water are fully bonded to the tiny bubbles to form floccules. Finally, the floccules and sewage enter the separation tank (1) through the sewage discharge pipe (9). The floccules float to the water surface of the separation tank (1) under the action of buoyancy to form scum. When the sewage in the separation tank (1) reaches the height of the scraper plate, the third rotating motor (10) is started, the third rotating motor (10) drives the first connecting rod (3) to rotate, the first connecting rod (3) drives the second connecting rod (13) to rotate, and the second connecting rod (13) drives the scraper plate (4) to rotate along the circumference of the separation tank (1), so as to scrape the scum on the water surface of the separation tank (1) into the scum collecting tank (7) and discharge it through the scum discharge hole, thereby achieving solid-liquid separation. The water after solid-liquid separation is further filtered through the filter screen (16) of the outlet pipe (8) and discharged from the outlet pipe (8), thereby achieving sewage treatment, improving sewage treatment efficiency and achieving better sewage treatment effect. Example 2

[0016] The difference between this embodiment and the first embodiment is that: the rotating blade (28) is provided with a flow disturbance hole (30), the flow disturbance hole (30) comprises a plurality of groups, the plurality of groups of flow disturbance holes (30) are arranged equidistantly along the length direction of the rotating blade (28), and each group comprises a plurality of flow disturbance holes (30), the plurality of flow disturbance holes (30) are arranged equidistantly along the width direction of the rotating blade (28); when in use, the flow disturbance holes (30) can further increase the contact area between the rotating blade (28) and the sewage entering the contact box (17), thereby stirring the sewage, and enabling the tiny bubbles generated by the disc aerator (24) to be evenly distributed in various areas of the contact box (17) under the action of the water flow, so that the flocs having a density less than that of water are fully bonded to the tiny bubbles, thereby generating more scum, and achieving better sewage treatment efficiency and effect; Example 3

[0017] The difference between this embodiment and embodiment 1 is that: a spoiler strip (31) is disposed on the rotating blade (28), the length of the spoiler strip (31) is equal to the width of the rotating blade (28), there are a plurality of spoiler strips (31), and each spoiler strip (31) is located between two adjacent groups of spoiler holes (30); when in use, the spoiler strip (31) and the spoiler holes (30) can further increase the contact area between the rotating blade (28) and the sewage entering the contact box (17), thereby stirring the sewage, and enabling the tiny bubbles generated by the disc aerator (24) to be evenly distributed in various areas of the contact box (17) under the action of the water flow, so that the flocs with a density less than that of water are fully bonded to the tiny bubbles, thereby generating more scum and achieving better sewage treatment efficiency and effect; The second connecting rod (13) is designed as a retractable structure. The height of the scraper plate (4) is adjusted by the second connecting rod (13) according to the height of the water surface of the separation tank (1), so that the scraper plate (4) can scrape the water surface of the separation tank (1) at different heights, thereby achieving a better scraping effect. The design in which the two ends of the scraper plate are in contact with the two inner side surfaces of the separation tank (1) respectively can increase the contact area between the scraper plate (4) and the scum floating on the water surface of the separation tank (1), thereby improving the scraping efficiency of the scraper plate (4); The diameter of the dosing hopper (12) remains constant from one end to one third of the diameter, and gradually increases from the one third of the diameter to the other end, so that the flocculant can more easily enter the flocculation box (15) through the dosing hopper (12); The spiral blade (18) is evenly provided with a plurality of flow-disturbing protrusions, which can further increase the stirring effect of the spiral blade (18) on the sewage and the flocculant entering the flocculation box, so that the sewage and the flocculant are in more complete contact, a flocculation reaction occurs, and more flocs are formed; The separation tank (1) and the slag collection tank (7) form a ring-shaped structure, and the contact component and the flocculation component are located in the middle of the ring-shaped structure. The flotation machine is more integrated as a whole, occupies a smaller area, and can be used in places with limited space. The design of the separation tank (1) and the slag collection tank (7) forming an annular structure can effectively improve the dynamic characteristics of the sewage flow, so that the sewage forms a circulation between the separation tank (1) and the slag collection tank (7), thereby obtaining a more stable fluid motion state, thereby reducing the drift of micro-bubbles in the separation tank (1), increasing the residence time of micro-bubbles, facilitating the contact between micro-bubbles and suspended particles in the water, facilitating the separation and collection of slag, and improving the treatment efficiency of the flotation machine; The separation tank (1) and the slag collection tank (7) form a ring-shaped structure, which can extend the flow path of the sewage, so that the sewage can be discharged from the flotation machine after being fully treated, thereby reducing the risk of short-circuiting and improving the treatment effect of the flotation machine; The design of the separation tank (1) and the slag collection tank (7) forming an annular structure can prolong the residence time of sewage in the annular separation tank (1), so that suspended particles and flocs in the water have more time to float up to become scum or settle to become sludge, thereby achieving a better solid-liquid separation effect.

[0018] The flocculation component is used to make the sewage fully contact with the flocculant, so as to produce more flocs. The contact component is used to make the flocs and tiny bubbles fully bonded, so as to produce more scum. The separation component is used to achieve solid-liquid separation, so as to improve the efficiency and effect of sewage treatment.

[0019] After considering the specification and practicing the invention disclosed herein, those skilled in the art will easily think of other similar embodiments of the present invention. This application is intended to cover any modified uses or adaptive changes of the present invention. These modifications or uses, applicability changes follow the general principles of the present invention and include common knowledge or customary technical means in the technical field that are not disclosed in the present invention.

[0020] It should be noted that, for the sake of simplicity, the specific implementation mode of the present invention describes the data processing process of the controller as a series of action combinations. However, those skilled in the art should know that the present invention is not limited to the described actions, because according to the present invention, certain steps can be performed sequentially or simultaneously. Secondly, those skilled in the art should also know that the actions described and involved in the specification are not necessarily required by the present invention. The described contents are only preferred implementation cases of the present invention and cannot be considered to limit the scope of implementation of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation modes and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. An air flotation machine aeration structure, characterized by: The invention is composed of a contact box, a sewage pipe, a blower, an air inlet pipe, a transmission pipe, a transmission branch pipe, an aeration pipe, a threaded sleeve, a support column, an aeration plate and an aeration hole. The blower is located outside the contact box, one end of the air inlet pipe is connected to the air outlet of the blower and communicated with the air outlet of the blower, the other end of the air inlet pipe passes through a through hole opened at the bottom of one side of the contact box and is placed at the other end of the transmission pipe and communicated with the other end of the transmission pipe. The transmission branch pipe is located above the transmission pipe, and one end of the transmission branch pipe is vertically placed on the The side of the transmission pipe, one end of the aeration pipe is placed on the side of the transmission branch pipe and is connected to the transmission branch pipe, the other end of the aeration pipe is placed on the bottom surface of the support column through a threaded sleeve and is connected to the support column, the support column is a hollow cylindrical structure with an open upper end, the aeration plate is placed on the top surface of the support column, the aeration plate is provided with aeration holes, the sides of the contact box are respectively correspondingly provided with one end of the sewage pipe, and one end of the sewage pipe is connected to the contact box, and one end of the sewage pipe is close to the top surface of the contact box.

2. The aeration structure of the air flotation machine according to claim 1, characterized in that The aeration plate is replaced by an arc-shaped aeration plate, the height of which gradually decreases from the center to the edge, and the density of aeration holes opened in the center of the arc-shaped aeration plate is greater than that at the edge.

3. The aeration structure of the air flotation machine according to claim 1, characterized in that A fixing sleeve is disposed at the connection between the aeration disc and the support column, and a sealing ring is disposed on the inner side of the fixing sleeve.

4. The aeration structure of the air flotation machine according to claim 1, characterized in that The transmission tube is placed in the middle of the inner bottom surface of the contact box body. The transmission tube is a structure with one end closed. The length of the transmission tube is equal to the length of one side surface of the contact box body.

5. The aeration structure of an air flotation machine according to claim 1, characterized in that There are multiple transmission branch pipes, and the multiple transmission branch pipes are arranged equidistantly along the length direction of the side surface of the transmission pipe.

6. The aeration structure of an air flotation machine according to claim 1, characterized in that There are multiple groups of aeration tubes, and the other ends of the multiple groups of aeration tubes have different heights. There are multiple aeration tubes in each group, and the other ends of the multiple aeration tubes in the same group extend from the connection with the side of the transmission branch pipe to different directions of the contact box. The multiple aeration tubes in the same group have the same height and different lengths. Multiple aeration tubes with different heights and different directions can cover different areas in the contact box, so that the tiny bubbles generated by the aeration disk connected to the aeration tube can be evenly distributed in different areas of the contact box, so that the flocs and the tiny bubbles are fully in contact with each other, and more scum is generated.

7. The air flotation machine aeration structure according to claim 1, characterized in that The aeration plate is detachably placed on the top surface of the support column, and the aeration plate is a structure that is bent in an arc shape multiple times from the center to the edge.

8. The air flotation machine aeration structure according to claim 3, characterized in that There are multiple groups of aeration holes, and the multiple groups of aeration holes are arranged in a staggered and equidistant manner from the center to the edge of the aeration disk. Each group of aeration holes has multiple aeration holes, and the multiple aeration holes in the same group are arranged equidistantly along the circumference of the aeration disk, so that the aeration holes can cover different areas of the contact box, so that the flocs and micro-bubbles can be fully in contact, and more scum is generated, and some aeration holes are prevented from being blocked by flocs or sewage in the contact box, resulting in no micro-bubbles in some areas, affecting the generation of scum; the density of the aeration holes opened in the center of the aeration disk is greater than the density at the edge. The aeration holes with large center density can reduce the blockage and flow resistance of micro-bubbles, increase the release amount of micro-bubbles, increase the contact area between micro-bubbles and flocs, and generate more scum.

9. The aeration structure of an air flotation machine according to claim 1, characterized in that The density of the aeration holes opened on the aeration disk with a lower height in each group is greater than the density of the aeration holes opened on the aeration disk with a higher height in each group. In the aeration disk with a higher height in each group, the density of the aeration holes opened on the aeration disk close to the edge of the contact box is greater than the density of the aeration holes opened on the aeration disk close to the transverse center axis of the contact box. This can increase the release amount of tiny bubbles close to the bottom and edge of the contact box, ensure that the flocs close to the bottom and edge of the contact box are in contact with more tiny bubbles, and produce more scum.

10. The aeration structure of an air flotation machine according to claim 1, characterized in that The flotation machine is composed of a separation component, a contact component and a flocculation component. The separation component is composed of a separation tank, a water outlet pipe, a filter screen, a slag discharge port, a slag collection tank, a support frame, a first connecting rod, a second connecting rod, a slag scraper, a third rotating motor and a support column. The separation tank is an arched structure with an opening at the upper end, and the slag collection tank is a fan-shaped structure with an opening at the upper end. The two ends of the separation tank are respectively in contact with the two ends of the slag collection tank, and the separation tank and the slag collection tank form an annular structure. The top height of the separation tank is greater than or equal to the top height of the slag collection tank. A slag discharge port is provided on the bottom surface of the slag collection tank. A plurality of support columns are located in the middle of the annular structure, and one end of the support column is inserted into the ground. The plurality of support columns are arranged circumferentially along the middle of the annular structure. The third rotary motor is placed in the middle of the top surface of the support frame, one end of the first connecting rod is connected to the motor shaft of the third rotary motor, the angle between one end of the first connecting rod and the motor shaft of the third rotary motor is 90 degrees, the other end of the first connecting rod is vertically placed on one end of the second connecting rod, the scraping plate is horizontally located in the separation pool, and the bottom surface height of the scraping plate is greater than or equal to the top height of the slag collecting pool, the two ends of the scraping plate are respectively in contact with the two inner side surfaces of the separation pool, and the other end of the second connecting rod is placed in the middle of the top surface of the support frame. The top surface of the scraper plate, the second connecting rod is a retractable structure, one end of the water outlet pipe is placed on a side of the separation tank and is connected to the separation tank, the filter screen is placed at one end of the water outlet pipe, the diameter of the filter screen is equal to the inner diameter of the water outlet pipe, the contact assembly is composed of a contact box, a blower, an air intake pipe, a connecting pipe, an air intake branch pipe, a disc aerator, a second rotating motor, a support rod, a rotating disc, a rotating blade and a sewage pipe, the contact box is located in the middle of the multiple support columns, the second rotating motor is placed in the middle of the inner bottom surface of the contact box, the support rod is located in the contact box, the length of the support rod is less than the height of the contact box, one end of the support rod is connected to the motor shaft of the second rotating motor, and the support A rotating disc is sleeved on the side of the support rod, and there are multiple rotating discs, and the multiple rotating discs are arranged equidistantly along the length direction of the support rod. A rotating blade is arranged on the side of the rotating disc, and there are multiple rotating blades, and the multiple rotating blades are arranged equidistantly along the circumferential direction of the side of the rotating disc. The rotating blade is an arc-shaped structure. The blower is located on the outside of the contact box body, one end of the air inlet pipe is connected to the air outlet of the blower and communicated with the air outlet of the blower, and the connecting pipe is placed on the inner bottom surface of the contact box body. The connecting pipe is a closed structure at both ends, and the connecting pipe is parallel to one side of the contact box body and close to one side of the contact box body. The length of the connecting pipe is equal to the length of one side of the contact box body.The other end of the air intake pipe passes through a through hole opened at the bottom of one side of the contact box body and is placed on one end side of the connecting pipe and is connected to the side of one end of the connecting pipe. One end of the air intake branch pipe is vertically placed on the side of the connecting pipe, and the air intake branch pipe is a structure with a closed end at the other end. There are multiple air intake branch pipes, and the multiple air intake branch pipes are equidistantly arranged along the length direction of the side of the connecting pipe. The length of the air intake branch pipe is equal to the length of the other side of the contact box body. A disc aerator is placed on the top side of the air intake branch pipe. There are multiple disc aerators, and the multiple disc aerators are equidistantly arranged along the length direction of the air intake branch pipe. One end of the sewage pipe is respectively arranged on the side of the contact box body, and one end of the sewage pipe is connected to the contact box body. One end of the sewage pipe is close to the top surface of the contact box body, and the other end of the sewage pipe passes through the through hole opened on the other side of the separation tank and is located on the inner bottom surface of the separation tank. The flocculation component is driven by a first rotating motor, The invention comprises a dosing hopper, a sewage inlet pipe, a rotating rod, a spiral blade, a flocculation box and a water outlet. The flocculation box is placed on the top surface of the contact box. One end of the dosing hopper is placed on the top surface of the flocculation box and is connected to the flocculation box. The diameter of the dosing hopper remains unchanged from one end to one third of the flocculation box and gradually increases from one third of the flocculation box to the other end. The first rotating motor is placed in the middle of the top surface of the flocculation box. The rotating rod is placed in the flocculation box. One end of the rotating rod is connected to the motor shaft of the first rotating motor through a through hole opened in the middle of the flocculation box. The length of the rotating rod is less than the height of the flocculation box. The spiral blade is placed on the side of the rotating rod. The length of the spiral blade is equal to the length of the rotating rod. A plurality of flow-disturbing protrusions are evenly arranged on the spiral blade. One end of the sewage inlet pipe is placed on one side of the flocculation box and is connected to the flocculation box. A water outlet is opened on the bottom surface of the flocculation box. The water outlet is located on the side of the bottom surface of the flocculation box.

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