Cavitation air flotation machine for sewage treatment

Abstract

The utility model discloses a cavitation air flotation machine for sewage treatment, which relates to the technical field of cavitation air flotation machines and comprises a machine body and a partition plate, one end of the machine body is connected with a water inlet, the other end of the machine body is connected with a water outlet, and the partition plate is fixed on the inner side of the machine body. An air flotation tank and a sedimentation tank are arranged in the machine body close to the two sides of the partition plate respectively, and a movable frame is arranged on the inner side of the sedimentation tank. According to the cavitation air flotation machine for sewage treatment, a first motor can be periodically started to drive a transmission shaft and a second gear to rotate, the second gear is in engaged connection with the first gear, so that the first gear drives a lead screw to rotate, then the lead screw is in threaded engagement with the two ends of a moving frame, and the moving frame moves from the outer side of the lead screw to one side; and the scraping plate of the moving frame scrapes on the inner wall of the sedimentation tank, impurities on the inner wall of the sedimentation tank are scraped off, regular cleaning by workers is facilitated, and the practicability of the cavitation air flotation machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vortex cavitation air flotation machines, and particularly relates to a vortex cavitation air flotation machine for sewage treatment. Background Technique

[0002] Sewage treatment refers to the removal of pollutants in sewage through various technical and technological means to make it meet the discharge standards or reach the requirements for reuse. Sewage treatment not only helps to protect the environment but also can recycle water resources. In the work of sewage treatment, a vortex cavitation air flotation machine will be used. The vortex cavitation air flotation machine is a device for water treatment, mainly used to remove suspended solids, oils, solid particles, etc. in water. It combines the advantages of vortex cavitation air flotation technology and is widely used in the fields of industrial wastewater treatment, sewage treatment, and water quality improvement.

[0003] However, the existing vortex cavitation air flotation machines have the following disadvantages. Since most vortex cavitation air flotation machines usually remove slag first when treating sewage and then precipitate again through a sedimentation tank, the sedimentation takes a long time, and some particulate impurities in the sewage may adhere to the inner wall of the sedimentation tank. After long-term adhesion, it is not convenient for the staff to clean up later. Therefore, the existing vortex cavitation air flotation machines need to be improved. Content of the Utility Model

[0004] The purpose of the utility model is to provide a vortex cavitation air flotation machine for sewage treatment to solve the problem that some particulate impurities in the sewage may adhere to the inner wall of the sedimentation tank in the existing vortex cavitation air flotation machines on the market, which is not convenient for the staff to clean up later after long-term adhesion as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A vortex cavitation air flotation machine for sewage treatment, including a machine body and a partition board. One end of the machine body is connected with a water inlet, and the other end of the machine body is connected with a water outlet. The partition board is fixed inside the machine body. The inner parts of the machine body near both sides of the partition board are respectively provided with an air flotation tank and a sedimentation tank. A moving frame is arranged inside the sedimentation tank. Both ends of the moving frame are connected with a transmission mechanism. A fixed frame is installed above the machine body near the transmission mechanism, and one side of the transmission mechanism is connected with the machine body. The transmission mechanism includes a lead screw, a first motor, a transmission shaft, a first gear, and a second gear. The lead screw threadedly penetrates through both ends of the moving frame.

[0006] Preferably, the lead screw is connected with the fixed frame through a bearing. One end of the lead screw is fixedly connected with a first gear, and a second gear is meshed with one side of the first gear.

[0007] Preferably, a transmission shaft is installed on one side of the machine body through a bearing bracket, and both ends of the transmission shaft are connected with the second gear. One end of the transmission shaft is connected with a first motor through a coupling.

[0008] Preferably, an aeration chamber is provided inside the body near the water inlet, and the aeration chamber is located inside the air flotation tank. An aerator is installed above the body, and one end of the aerator is located in the aeration chamber.

[0009] Preferably, a water pump is installed above the partition plate. Both ends of the water pump are connected with a conduit, and one side of the partition plate close to the air flotation tank is connected with a filter box.

[0010] Preferably, a cleaning mechanism is installed on one side of the partition plate close to the filter box. One side of the outer wall of the aeration chamber is connected with a return pipe, and a chain scraping component is installed above the body close to the air flotation tank.

[0011] Preferably, the cleaning mechanism includes a second motor, a turntable, a rotating shaft and a cleaning brush. The second motor is installed in the built-in groove of the partition plate.

[0012] Preferably, one end of the second motor is connected with the turntable through a coupling. One side of the partition plate close to the turntable is installed with a rotating shaft through a bearing, and one end of the rotating shaft is fixedly connected with a cleaning brush.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. A transmission mechanism and a moving frame are provided. By regularly starting the first motor to drive the transmission shaft and the second gear to rotate, the second gear is meshed with the first gear, so that the first gear drives the lead screw to rotate. Subsequently, the lead screw is threadedly engaged with both ends of the moving frame, and the moving frame moves to one side on the outside of the lead screw, so that the scraper of the moving frame scrapes on the inner wall of the sedimentation tank, and the impurities on the inner wall of the sedimentation tank are scraped off, which is convenient for the staff to clean regularly and improves the practicability of the vortex flotation machine.

[0015] 2. A cleaning mechanism and a filter box are provided. The large-particle impurities are blocked outside the conduit by the filter box to prevent the large-particle impurities from entering through the conduit. And the second motor is regularly started to drive the turntable to rotate. The turntable drives the convex block to slide in the chute of the cleaning brush and pulls the cleaning brush to rotate around the rotating shaft. One end of the cleaning brush swings and brushes at the filter screen of the filter box, and the impurities adhered to the filter box can be brushed off, which can prevent the conduit from being blocked and improves the working quality and efficiency of the vortex flotation machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view structural schematic diagram of the present utility model;

[0017] Figure 2 is the front view sectional structural schematic diagram of the present utility model;

[0018] Figure 3 is the top view sectional structural schematic diagram of the present utility model;

[0019] Figure 4 This is a schematic side view structure diagram of the cleaning brush of the present utility model;

[0020] Figure 5 This is a schematic top sectional view structure diagram of the cleaning mechanism of the present utility model;

[0021] Figure 6 This is a schematic three-dimensional structure diagram of the moving frame of the present utility model.

[0022] In the figure: 1, the body; 2, the water inlet; 3, the water outlet; 4, the aerator; 5, the partition; 6, the transmission mechanism; 601, the lead screw; 602, the first motor; 603, the transmission shaft; 604, the first gear; 605, the second gear; 7, the fixed frame; 8, the moving frame; 9, the cleaning mechanism; 901, the second motor; 902, the turntable; 903, the rotating shaft; 904, the cleaning brush; 10, the filter box; 11, the conduit; 12, the water pump; 13, the sedimentation tank; 14, the chain type sludge scraping assembly; 15, the air flotation tank; 16, the aeration chamber; 17, the return pipe. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 - 5 , the present utility model provides a technical solution: a vortex cavitation air flotation machine for sewage treatment, including a body 1 and a partition 5. One end of the body 1 is connected with a water inlet 2, and the other end of the body 1 is connected with a water outlet 3. The partition 5 is fixed inside the body 1. An air flotation tank 15 and a sedimentation tank 13 are respectively arranged inside the body 1 on both sides close to the partition 5. An aeration chamber 16 is arranged inside the body 1 close to the water inlet 2, and the aeration chamber 16 is located inside the air flotation tank 15. An aerator 4 is installed above the body 1, and one end of the aerator 4 is located in the aeration chamber 16. A water pump 12 is installed above the partition 5. Both ends of the water pump 12 are connected with a conduit 11. One side of the outer wall of the aeration chamber 16 is connected with a return pipe 17. A chain type sludge scraping assembly 14 is installed above the body 1 close to the air flotation tank 15.

[0025] Please refer to Figures 1 - 3 and Figure 6, a moving frame 8 is provided inside the sedimentation tank 13. Both ends of the moving frame 8 are connected with a transmission mechanism 6. Above the transmission mechanism 6 near the body 1, a fixed frame 7 is installed, and one side of the transmission mechanism 6 is connected to the body 1. The transmission mechanism 6 includes a lead screw 601, a first motor 602, a transmission shaft 603, a first gear 604 and a second gear 605. The lead screws 601 penetrate through both ends of the moving frame 8 in a threaded manner. The lead screws 601 are connected to the fixed frame 7 through bearings. One end of the lead screw 601 is fixedly connected with a first gear 604. A second gear 605 is meshed with one side of the first gear 604. One side of the body 1 is installed with a transmission shaft 603 through a bearing bracket, and both ends of the transmission shaft 603 are connected to the second gear 605. One end of the transmission shaft 603 is connected with a first motor 602 through a coupling. A scraper is provided outside the moving frame 8. The shape of the moving frame 8 is set as a "U" shape.

[0026] During specific implementation, since most cavitation flotation machines usually remove slag first when treating sewage, and then precipitate again through a sedimentation tank, the precipitation takes a long time. Some particulate impurities in the sewage may adhere to the inner wall of the sedimentation tank. After long-term adhesion, it is inconvenient for the staff to clean up later. The first motor 602 can be regularly started to drive the transmission shaft 603 and the second gear 605 to rotate. The second gear 605 is meshed and connected with the first gear 604, so that the first gear 604 drives the lead screw 601 to rotate. Subsequently, the lead screw 601 is in threaded engagement with both ends of the moving frame 8, and the moving frame 8 moves to one side on the outside of the lead screw 601, so that the scraper of the moving frame 8 scrapes on the inner wall of the sedimentation tank 13, and the impurities on the inner wall of the sedimentation tank 13 are scraped off, which is convenient for the staff to clean regularly and improves the practicability of the cavitation flotation machine.

[0027] Please refer to Figures 1 - 4 , on one side of the partition 5 close to the flotation tank 15, a filter box 10 is connected. On one side of the partition 5 close to the filter box 10, a cleaning mechanism 9 is installed. The cleaning mechanism 9 includes a second motor 901, a turntable 902, a rotating shaft 903 and a cleaning brush 904. The second motor 901 is installed in the built-in groove of the partition 5. One end of the second motor 901 is connected with the turntable 902 through a coupling. On one side of the partition 5 close to the turntable 902, a rotating shaft 903 is installed through a bearing. One end of the rotating shaft 903 is fixedly connected with a cleaning brush 904. A convex block is provided on one side of the turntable 902. A chute is opened on the inner side of the cleaning brush 904 close to the turntable 902. The convex block of the turntable 902 is in sliding connection with the chute of the cleaning brush 904. A filter screen is provided on one side of the filter box 10 close to the cleaning brush 904.

[0028] In specific implementation, since there are still some large particulate impurities in the sewage after treatment and slag removal in the air flotation tank 15, when the sewage enters the sedimentation tank 13 from the water pipe for further treatment, the large particulate impurities are likely to cause blockage of the water pipe. The large particulate impurities can be blocked outside the conduit 11 through the filter box 10 to prevent them from entering through the conduit 11. And the second motor 901 is regularly started to drive the turntable 902 to rotate. The turntable 902 drives the convex block to slide in the chute of the cleaning brush 904 and pulls the cleaning brush 904 to rotate around the rotating shaft 903. One end of the cleaning brush 904 swings and brushes at the filter screen of the filter box 10, and the impurities adhered to the filter box 10 can be brushed off, which can prevent the conduit 11 from being blocked, and improve the working quality and efficiency of the cavitation air flotation machine.

[0029] Working principle: When using the cavitation air flotation machine for sewage treatment, first, the sewage enters the aeration chamber 16 from the water inlet 2. Then, the aerator 4 inputs oxygen to generate bubbles. These bubbles are mixed with particulate substances such as suspended solids and grease in the sewage, driving the particulate substances such as suspended solids and grease to rise to the water surface of the air flotation tank 15. At the same time, the sewage flows back through the return pipe 17. Subsequently, the chain sludge scraping assembly 14 clears the floating slag. Then, the water pump 12 drives the conduit 11 to introduce the treated sewage into the sedimentation tank 13. At the same time, the sewage is filtered again through the cleaning mechanism 9 and the filter box 10 to prevent large particulate impurities from entering the conduit 11. Subsequently, through long-term sedimentation, the small particulate impurities in the sewage settle into the sedimentation tank 13. The impurities adhered to the inner wall can be scraped off regularly through the moving frame 8 for convenient cleaning. Finally, the treated sewage is discharged through the water outlet 3 and can be recycled, improving the practicability and working efficiency of the cavitation air flotation machine. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aerated grit chamber for sewage treatment, comprising a machine body (1) and a partition board (5), characterized in that: One end of the body (1) is connected with a water inlet (2), the other end of the body (1) is connected with a water outlet (3), the partition plate (5) is fixed inside the body (1), air flotation tanks (15) and sedimentation tanks (13) are respectively arranged inside the body (1) on both sides close to the partition plate (5), a moving frame (8) is arranged inside the sedimentation tank (13), transmission mechanisms (6) are connected to both ends of the moving frame (8), a fixed frame (7) is installed above the body (1) close to the transmission mechanisms (6), and one side of the transmission mechanisms (6) is connected with the body (1). The transmission mechanisms (6) include lead screws (601), first motors (602), transmission shafts (603), first gears (604) and second gears (605), and the lead screws (601) penetrate through both ends of the moving frame (8) in a threaded manner.

2. The cavitation air flotation machine for sewage treatment according to claim 1, wherein: The lead screws (601) are connected with the fixed frame (7) through bearings, one end of each lead screw (601) is fixedly connected with a first gear (604), and a second gear (605) is meshed with one side of the first gear (604).

3. The vortex cavitation air flotation machine for sewage treatment according to claim 2, characterized in that: The body (1) is provided with a transmission shaft (603) through a bearing bracket on one side, and both ends of the transmission shaft (603) are connected with the second gears (605), and one end of the transmission shaft (603) is connected with a first motor (602) through a coupling.

4. A cavitation air flotation machine for sewage treatment according to claim 1, characterized in that: An aeration chamber (16) is arranged inside the body (1) close to the water inlet (2), and the aeration chamber (16) is located inside the air flotation tank (15). An aerator (4) is installed above the body (1), and one end of the aerator (4) is located in the aeration chamber (16).

5. The vortex cavitation air flotation machine for sewage treatment according to claim 4, characterized in that: A water pump (12) is installed above the partition plate (5), both ends of the water pump (12) are connected with a conduit (11), and a filter box (10) is connected to one side of the partition plate (5) close to the air flotation tank (15).

6. The cavitation air flotation machine for sewage treatment according to claim 5, characterized in that: A cleaning mechanism (9) is installed on one side of the partition plate (5) close to the filter box (10), a return pipe (17) is connected to one side of the outer wall of the aeration chamber (16), and a chain type sludge scraping assembly (14) is installed above the body (1) close to the air flotation tank (15).

7. The cavitation air flotation machine for sewage treatment according to claim 6, characterized in that: The cleaning mechanism (9) includes a second motor (901), a turntable (902), a rotating shaft (903) and a cleaning brush (904), and the second motor (901) is installed in the built-in groove of the partition plate (5).

8. A vortex cavitation air flotation machine for sewage treatment according to claim 7, characterized in that: One end of the second motor (901) is connected with the turntable (902) through a coupling, a rotating shaft (903) is installed on one side of the partition plate (5) close to the turntable (902) through a bearing, and one end of the rotating shaft (903) is fixedly connected with the cleaning brush (904).

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