Dissolved air flotation machine

Abstract

The invention relates to a dissolved air flotation machine which comprises a water tank, a dosing and stirring assembly is arranged on one side of the water tank, a scraper assembly and four first supporting plates are arranged on the water tank, each first supporting plate is provided with a first supporting plate, a rotating shaft is arranged between the two first supporting plates, one rotating shaft is externally connected with a motor and driven by the motor, and the other rotating shaft is driven by the motor to rotate. The scraper assembly is driven to move forwards; along with leftward operation of the gear, the gear firstly makes contact with the teeth on the right side, the gear is driven to rotate by 90 degrees under meshing of the teeth on the right side, and in the rotating process of the gear, the scraper is driven to rotate by 90 degrees; and meanwhile, the sliding rod is driven to slide, and the bottom of the sliding rod slides on the sliding plate and slides from the lowest point of the sliding plate to the bottommost point of the other sliding plate, so that the position of the scraper is fixed, and the scraper cannot move during cleaning.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment and relates to a dissolved air flotation machine. Background Art

[0002] A dissolved air flotation machine is a device used for treating sewage to remove tiny suspended particulate matters in the sewage. When in use, a medicament (flocculant) is first added to the sewage and stirred to fully mix the flocculant with the sewage. Through the flocculant, the suspended matters dispersed in the sewage are aggregated into flocs. Then, the medicated sewage is introduced into a flotation tank. A microbubble generator is provided in the flotation tank. A large number of tiny bubbles are generated by the microbubble generator. The tiny bubbles will adhere to the flocs, causing the flocs to float to the surface of the sewage to form scum. The scum on the water surface is scraped off by a scum scraping mechanism. After removing the scum, the remaining is clear water.

[0003] However, when the existing scum scraping mechanism is in use, after the scum scraping plate scrapes the scum once, some scum will adhere to the scum scraping plate. Since the scum scraping plate moves cyclically, when the scum scraping plate conducts the next scum scraping, the scum adhering to the scum scraping plate will be brought into the clear water again, thus the scum cannot be removed cleanly and the scum removal effect is not ideal.

[0004] For example, a Chinese patent with the application number 2023218250881 discloses a dissolved air flotation machine. The "drug adding and stirring assembly" in this case is the same as the "drug adding and stirring device" in that case; therefore, the "drug adding and stirring assembly" in this case is prior art and will not be explained. Summary of the Invention

[0005] The purpose of the present invention is to provide a dissolved air flotation machine that can solve the problems raised in the background art.

[0006] According to the technical solution provided by the present invention: A dissolved air flotation machine includes a water tank. A drug adding and stirring assembly is provided on one side of the water tank. A scraping plate assembly and four first support plates are provided on the water tank. A first support plate is provided on each first support plate. A rotating shaft is provided between two first support plates. One of the rotating shafts is externally connected to a motor and driven by the motor to drive the scraping plate assembly to move forward.

[0007] A cleaning assembly and a rotating assembly are provided on the water tank; the scraping plate assembly includes a scraping plate. Driven by the motor, the scraping plate moves forward and, in cooperation with the rotating assembly, the scraping plate rotates by 90 degrees; the scraping plate continues to move and cooperates with the cleaning assembly to clean its surface, and finally, in cooperation with the rotating assembly, rotates to the initial state.

[0008] Preferably, the cleaning component includes a third support plate, a fourth support plate, and a cleaning plate; a third support plate is provided on the water tank, a fourth support plate is provided in the middle of the third support plate, and a cleaning plate used in cooperation with the scraper is provided on the fourth support plate.

[0009] Preferably, the scraper assembly further includes a second sprocket, a second chain, a support rod, a chute, a chain connecting plate, a rotating rod, a cylinder, a telescopic rod, a round plate, a spring telescopic rod, a gear, a limiting ring, a sliding rod, and a sliding plate; two second sprockets are provided on each rotating shaft, and every two second sprockets are engaged and driven by a second chain. A chain connecting plate is provided on the two second chains. A rotating rod is rotatably provided on the chain connecting plate. A gear is fixedly sleeved in the middle of the rotating rod. A cylinder is provided on the rotating rod. A limiting ring and a sliding plate are provided on the cylinder. The sliding plate is inclined from one end to the other end. A telescopic rod is provided on the cylinder. The telescopic rod extends out of the telescopic rod and is provided with a round plate; one end face of the round plate is connected to the scraper, and at least two spring telescopic rods are provided on the other end face. A sliding rod in contact with the surface of the sliding plate is provided on the spring telescopic rod.

[0010] Preferably, the scraper assembly further includes a fixing plate and a fixing rod. A fixing plate is provided on the chain connecting plate. One end of the fixing rod is connected to the fixing plate, and the other end of the fixing rod is connected to the round plate.

[0011] Preferably, the rotating assembly includes a second support plate and a rack; a second support plate is provided on the water tank, a rack is provided in the middle of the second support plate. Tooth teeth are provided near both ends of the rack, and there are no tooth teeth in the middle of the rack. The tooth teeth are all engaged with the gear.

[0012] Preferably, two first sprockets are provided on the rotating shaft, and a first chain is engaged between every two relatively far-apart first sprockets.

[0013] Preferably, a groove is formed on the water tank, and a collection box is provided on the water tank and at the position of the water tank. An outlet is provided on the collection box.

[0014] The positive and progressive effects of this application are as follows:

[0015] A dissolved air flotation machine provided by an embodiment of the present invention has the following advantages:

[0016] 1. As the gear runs to the left, the gear first contacts the tooth teeth on the right side, and under the engagement of the tooth teeth on the right side, the gear is driven to rotate by ninety degrees. During the rotation of the gear, the scraper is driven to rotate; at the same time, the sliding rod is driven to slide, and the bottom of the sliding rod slides on the sliding plate and slides from the lowest point of the sliding plate to the lowest point of another sliding plate to fix the position of the scraper, so that the scraper will not move during cleaning. Description of the drawings

[0017] Figure 1 is a three-dimensional view of the present invention.

[0018] Figure 2 is Figure 1 a side view three-dimensional view.

[0019] Figure 3 is a schematic diagram of the scraper assembly of the present invention.

[0020] Figure 4 is a three-dimensional view of the scraper assembly of the present invention.

[0021] Figure 5 is Figure 4 a schematic diagram of the cooperation between the sliding rod and the sliding plate of the scraper assembly in

[0022] In the figure: water tank 1; groove 11; collection box 12; chemical dosing and stirring assembly 13; first support plate 2; bracket 21; rotating shaft 22; first sprocket 23; first chain 24; second support plate 3; rack 31; third support plate 4; fourth support plate 41; cleaning plate 42; scraper assembly 5; second sprocket 50; second chain 51; support rod 52; chute 53; chain connecting plate 54; rotating rod 55; cylinder 56; telescopic rod 57; circular plate 58; scraper 59; spring telescopic rod 60; fixing plate 61; fixing rod 62; gear 63; limiting ring 64; sliding rod 65; sliding plate 66. Detailed implementation manners

[0023] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, 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 invention.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0025] Such as Figures 1-5As shown in the figure, the present invention is a dissolved air flotation machine, including a water tank 1. A chemical dosing and stirring assembly 13 is provided on one side of the water tank 1. A scraper assembly 5 and four first support plates 2 are provided on the water tank 1. A first support plate 2 is provided on each first support plate 2. A rotating shaft 22 is provided between two first support plates 2. One of the rotating shafts 22 is externally connected to a motor, and the motor is installed on the outer wall of the water tank 1. Driven by the motor, the scraper assembly 5 is driven to move forward;

[0026] A cleaning assembly and a rotating assembly are provided on the water tank 1; the scraper assembly 5 includes a scraper 59; driven by the motor, the scraper 59 is driven to move forward, and in cooperation with the rotating assembly, the scraper 59 is driven to rotate by 90 degrees; the scraper 59 continues to move, cooperates with the cleaning assembly to clean its surface, and finally rotates to the initial state in cooperation with the rotating assembly.

[0027] Preferably, the scraper assembly 5 further includes a second sprocket 50, a second chain 51, a support rod 52, a chute 53, a chain connecting plate 54, a rotating rod 55, a cylinder 56, a telescopic rod 57, a circular plate 58, a spring telescopic rod 60, a gear 63, a limiting ring 64, a sliding rod 65 and a sliding plate 66;

[0028] Two second sprockets 50 are provided on each rotating shaft 22. Meshing and transmission are formed between every two second sprockets 50 through a second chain 51. A chain connecting plate 54 is provided on the two second chains 51, and a rotating rod 55 is rotatably provided on the chain connecting plate 54;

[0029] Furthermore, a support rod 52 is provided between the two rotating shafts 22, and a chute 53 is provided on the support rod 52; one end of the rotating rod 55 extends out of the chain connecting plate 54 and forms a sliding connection with the chute 53; to improve the stability of the chain connecting plate 54 and the rotating shaft 22;

[0030] A gear 63 is fixedly sleeved in the middle of the rotating rod 55. A cylinder 56 is provided at the other end of the rotating rod 55. A limiting ring 64 and a sliding plate 66 are provided on the cylinder 56. The sliding plate 66 is inclined from one end to the other end. A telescopic rod 57 is provided on the cylinder 56. The telescopic rod 57 extends out of the limiting ring 64 and is provided with a circular plate 58. The upper end of the telescopic rod 57 is rotatably connected to the circular plate 58; one end face of the circular plate 58 is connected to the scraper 59, and at least two spring telescopic rods 60 are provided on the other end face. A sliding rod 65 in contact with the surface of the sliding plate 66 is provided on the spring telescopic rod 60;

[0031] When one of the rotating shafts 22 rotates, it will drive the second sprocket 50 to rotate synchronously. Since the second chain 51 is engaged and driven on the second sprocket 50, during the rotation of the second sprocket 50, the second chain 51 is driven to transmit, thereby driving the chain connecting plate 54 to rotate around the rotating shaft 22 in circles; with the transmission of the chain connecting plate 54, the two scraping plates 59 alternately contact the water surface, effectively cleaning the floating scum on the water surface and improving the cleaning effect; the second sprocket 50 and the second chain 51 are engaged and driven, enabling the two rotating shafts 22 to rotate synchronously, improving the stability and reliability of the system.

[0032] Further preferably, the scraping plate assembly 5 further includes a fixing plate 61, a fixing rod 62. The fixing plate 61 is provided on the chain connecting plate 54. One end of the fixing rod 62 is connected to the fixing plate 61, and the other end of the fixing rod 62 is connected to the circular plate 58. The circular plate 58 is rotatably connected to the fixing rod 62; thereby improving the stability of the circular plate 58, so that when the circular plate 58 runs to the lower part, it will not fall downward, and at the same time, the firmness of the circular plate 58 is also improved.

[0033] Preferably, the cleaning assembly includes a third support plate 4, a fourth support plate 41 and a cleaning plate 42; the water tank 1 is provided with a third support plate 4, the middle of the third support plate 4 is provided with a fourth support plate 41, and the fourth support plate 41 is provided with a cleaning plate 42 that cooperates with the scraping plate 59; when the scraping plate 59 is driven by the gear 63 to rotate 90 degrees, during the forward movement of the scraping plate 59, it will contact the inside of the cleaning plate 42. Under the action of the cleaning plate, the floating scum remaining on the surface of the scraping plate 59 is cleaned to ensure the cleanliness of the surface of the scraping plate 59.

[0034] Preferably, as Figure 1 shown: The rotating assembly includes a second support plate 3 and a rack 31; the water tank 1 is provided with a second support plate 3, the middle of the second support plate 3 is provided with a rack 31. The rack 31 has teeth near both ends and no teeth in the middle. The teeth are all engaged with the gear 63; as the gear 63 moves to the left, the gear 63 first contacts the teeth on the right side and is driven to rotate 90 degrees under the engagement of the teeth on the right side. When it runs to the teeth on the left side and meshes with them, the gear 63 will rotate 90 degrees again and return to the initial state; during the rotation of the gear 63, the scraping plate 59 is driven to rotate 90 degrees; at the same time, the sliding rod 65 is driven to slide, and the bottom of the sliding rod 65 slides on the sliding plate 66 and slides from the lowest point of one sliding plate 66 to the lowest point of another sliding plate 66 to fix the position of the scraping plate 59, so that the scraping plate 59 will not move during cleaning;

[0035] The specific working principle is as follows: When the gear 63 moves to the left, it first contacts and meshes with the teeth on the right side, driving the rack 31 and the scraper 59 to rotate 90 degrees. At the same time, the slide rod 65 slides from the lowest point to the highest point on the slide plate 66 and then returns to the lowest point of another slide plate 66 to fix the position of the scraper 59 and ensure the cleaning effect on the surface of the scraper 59.

[0036] Preferably, two first sprockets 23 are provided on the rotating shaft 22, and a first chain 24 is meshed between every two relatively distant first sprockets 23; to improve the transmission efficiency of the other rotating shaft 22;

[0037] Specifically, the two first sprockets 23 on each rotating shaft 22 are linked by a first chain 24 to ensure the balanced distribution of power between the two rotating shafts 22, effectively improving the transmission efficiency and avoiding the decrease in transmission efficiency caused by a single rotating shaft 22 bearing too much load. This not only improves the stability and reliability of the entire system but also ensures that each rotating shaft 22 can fully play its role during operation, thereby improving the overall working efficiency.

[0038] Preferably, a groove 11 is provided on the water tank 1, and a collection box 12 is provided on the water tank 1 at the position of the water tank 1. The collection box 12 is provided with an outlet; through the setting of the groove 11, it is convenient for the scraper 59 to scrape the scum on the water surface into the collection box 12, and finally discharge it through the outlet on the collection box 12;

[0039] In this design, the water tank 1 undertakes the main loading function for storing the water to be treated. The groove 11 provided at a specific position on the water tank 1 provides a convenient channel for scraping the scum, making it easy for the scum to be centrally collected by the scraper 59. The collection box 12 is specifically used for collecting the scum scraped from the groove 11, and by setting an outlet, it is convenient to discharge the accumulated scum.

[0040] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention. However, the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. A dissolved air flotation machine, comprising a water tank box (1), one side of the water tank box (1) is provided with a dosing stirring assembly (13), characterized in that: A scraper assembly (5) and four first support plates (2) are provided on the water tank box (1), each of the first support plates (2) is provided with a first support plate (2), a rotating shaft (22) is provided between the two first support plates (2), one of the rotating shafts (22) is externally connected to a motor, and driven by the motor, drives the scraper assembly (5) to move forward; The water tank box (1) is provided with a cleaning component and a rotating component; the scraper component (5) includes a scraper (59); driven by a motor, the scraper (59) is driven to move forward, and with the cooperation of the rotating component, the scraper (59) is driven to rotate ninety degrees; the scraper (59) continues to move, cooperates with the cleaning component to clean its surface, and finally rotates to an initial state with the cooperation of the rotating component.

2. A dissolved air flotation machine as claimed in claim 1, characterized in that: The cleaning assembly comprises a third support plate (4), a fourth support plate (41) and a cleaning plate (42); the third support plate (4) is provided on the water tank box (1), a fourth support plate (41) is provided in the middle of the third support plate (4), and a cleaning plate (42) used in conjunction with a scraper (59) is provided on the fourth support plate (41).

3. A dissolved air flotation machine as claimed in claim 2, characterized in that: The scraper assembly (5) further comprises a second sprocket (50), a second chain (51), a support rod (52), a slide groove (53), a chain connecting plate (54), a rotating rod (55), a cylinder (56), a telescopic rod (57), a circular plate (58), a spring telescopic rod (60), a gear (63), a limiting ring (64), a slide rod (65) and a slide plate (66); each rotating shaft (22) is provided with two second sprockets (50), and each two second sprockets (50) are meshed and driven by the second chain (51), and the two second chains (51) are provided with a chain connecting plate (54), and the chain connecting plate (54) ) is rotatably provided with a rotating rod (55), a gear (63) is fixedly sleeved in the middle of the rotating rod (55), a cylinder (56) is provided on the rotating rod (55), a limiting ring (64) and a slide plate (66) are provided on the cylinder (56), the slide plate (66) is inclined from one end to the other end, a telescopic rod (57) is provided on the cylinder (56), the telescopic rod (57) extends out of the limiting ring (64) and is provided with a circular plate (58); one end surface of the circular plate (58) is connected to the scraper (59), and the other end surface is provided with at least two spring telescopic rods (60), and the spring telescopic rod (60) is provided with a slide bar (65) in contact with the surface of the slide plate (66).

4. A dissolved air flotation machine as claimed in claim 3, characterized in that: The scraper assembly (5) further comprises a fixing plate (61) and a fixing rod (62); the fixing plate (61) is provided on the chain link plate (54); one end of the fixing rod (62) is connected to the fixing plate (61); and the other end of the fixing rod (62) is connected to the circular plate (58).

5. A dissolved air flotation machine as claimed in claim 4, characterized in that: The rotating assembly comprises a second supporting plate (3) and a rack (31); the second supporting plate (3) is provided on the water tank box (1), and the middle part of the second supporting plate (3) is provided with a rack (31), the rack (31) has teeth near both ends, and the middle part of the rack (31) has no teeth, and the teeth are all meshed with the gear (63).

6. A dissolved air flotation machine as claimed in claim 1, characterized in that: Two first sprocket wheels (23) are arranged on the rotating shaft (22), and a first chain (24) is meshed between every two first sprocket wheels (23) that are relatively far apart.

7. A dissolved air flotation machine as claimed in claim 1, characterized in that: The water tank box (1) is provided with a groove (11), a collecting box (12) is provided on the water tank box (1) and located at the water tank box (1), and an outlet is provided on the collecting box (12).

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