Floating foam removing device for sewage treatment

Abstract

The utility model provides a floating foam removing device for sewage treatment, and belongs to the technical field of environmental protection facilities. Comprising a strip-shaped water tank and at least one scraping assembly located on the rear portion of the middle of the water tank, a water inlet notch and a water outlet notch are formed in the two ends of the water tank respectively, each scraping assembly comprises a guide groove transversely and fixedly formed in the water tank and two rotating wheels rotationally connected to the two outer side faces of the water tank respectively, and a belt is arranged between the two rotating wheels in a traction mode. A plurality of scrapers are arranged on the outer side face of the belt at intervals, one rotating wheel is driven by a gear motor, the guide groove comprises a guide plate, a baffle matched with the scrapers and a limiting plate located above the baffle, a groove opening of the guide groove faces one side of the water inlet notch, the guide plate is partially located below the face of the water tank, and the baffle and the limiting plate are both located above the water tank. The device has the advantages of high efficiency and the like.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection facilities technology and relates to a foam removal device for sewage treatment. Background Technology

[0002] The decomposition of organic matter and the excessive proliferation of microorganisms (such as filamentous bacteria) in wastewater can both lead to the generation of scum. Scum and the tiny scum it carries are involved in multiple processes during wastewater treatment. For example, scum and scum need to be removed before and after physical and chemical treatment. The common treatment method is scraping, which takes advantage of the fact that scum and scum are located on the water surface and uses a scraper to scrape them off from the water body intermittently or continuously. Because the scraper enters and exits water intermittently, scum and scum can easily adhere to the scraper and re-enter the water, resulting in incomplete removal of scum and scum and low removal efficiency. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by providing a descum removal device for wastewater treatment. The technical problem this invention aims to solve is how to efficiently scrape away foam and scum.

[0004] The objective of this utility model can be achieved through the following technical solution: A foam removal device for sewage treatment, characterized in that it includes a strip-shaped water tank and at least one scraping component located at the rear of the middle part of the water tank. The two ends of the water tank have an inlet and an outlet, respectively. The scraping component includes a guide groove fixedly mounted horizontally on the water tank and two rotating wheels rotatably connected to the two outer sides of the water tank. A belt is pulled between the two rotating wheels. A plurality of scrapers are alternately arranged on the outer side of the belt. One of the rotating wheels is driven by a reduction motor. The guide groove includes a guide plate, a baffle that cooperates with the scraper, and a limiting plate located above the baffle. The opening of the guide groove faces the side of the inlet. The guide plate is partially located below the surface of the water tank. The baffle and the limiting plate are both located above the water tank.

[0005] Furthermore, an aeration structure is installed at the bottom of the water tank between the guide channel and the water inlet.

[0006] Furthermore, the scraper and the cross-section of the water tank are inclined at an angle of 15 to 30 degrees.

[0007] Wastewater enters the water tank through the inlet and flows along the length of the water tank towards the outlet. Under the action of the guide plate, foam and scum tend to accumulate in the guide channel. The scraper driven by the rotating wheel scrapes them out of the guide channel, that is, outside the water tank. Since the scraper is in a vertical position, foam and scum are not easy to adhere to the scraper. Furthermore, due to the high scraping frequency and the certain degree of sealing effect between adjacent scrapers on foam and scum, the probability of them re-entering the water is low, and the foam and scum are less affected by the water flow. Attached Figure Description

[0008] Figure 1 This is a structural diagram of the water tank and the guide channel on the water tank.

[0009] Figure 2 This is a cross-sectional view of the foam removal device.

[0010] Figure 3 This is a schematic diagram of the working structure of the impeller and its traction scraper and guide groove.

[0011] In the diagram, 1 is the water tank; 11 is the water inlet; 12 is the water outlet; 2 is the impeller; 3 is the scraper; 4 is the guide channel; 41 is the guide plate; 42 is the baffle; and 43 is the limiting plate. Detailed Implementation

[0012] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0013] like Figure 1 , Figure 2 and Figure 3 The foam removal device shown includes a strip-shaped water tank 1 and at least one scraping component located at the rear of the middle part of the water tank 1. The two ends of the water tank 1 have a water inlet 11 and a water outlet 12, respectively. The scraping component includes a guide groove 4 horizontally fixed on the water tank 1 and two rotating wheels 2 respectively rotatably connected to the two outer sides of the water tank 1. A belt is pulled between the two rotating wheels 2. Several scrapers 3 are arranged alternately on the outer side of the belt. One of the rotating wheels 2 is driven by a reduction motor. The guide groove 4 includes a guide plate 41, a baffle 42 that cooperates with the scraper 3, and a limiting plate 43 located above the baffle 42. The groove opening of the guide groove 4 faces the water inlet side. The guide plate 41 is partially located below the surface of the water tank 1. The baffle 42 and the limiting plate 43 are both located above the water tank 1.

[0014] An aeration structure is installed at the bottom of the water tank 1, located between the guide channel 4 and the water inlet. Aeration helps the foam and scum to float to the surface.

[0015] The scraper 3 is inclined at an angle of 15 to 30 degrees to the cross section of the water tank 1. The scraper 3 can be vertical or inclined. The inclined state is more conducive to the falling of foam and scum. The scraper 3 is made of rubber and has a certain degree of elasticity. It has a certain clamping force with the baffle 42.

[0016] Wastewater enters the water tank 1 through the inlet 11 and flows along the length of the water tank 1 to the outlet 12. Under the action of the guide plate 41, the foam and scum tend to gather in the guide channel 4. The scraper 3 driven by the rotating wheel 2 scrapes them outside the guide channel 4, that is, outside the water tank 1. Since the scraper 3 tends to be vertical, the foam and scum are not easy to adhere to the scraper 3. In addition, due to the high scraping frequency and the certain degree of sealing effect between adjacent scrapers 3 on the foam and scum, the probability of them re-entering the water is low, and the foam and scum are less affected by the water flow.

[0017] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A desquamation device for wastewater treatment, characterized in that, The device includes a strip-shaped water tank (1) and at least one scraping assembly located at the rear of the middle part of the water tank (1). The two ends of the water tank (1) have a water inlet (11) and a water outlet (12) respectively. The scraping assembly includes a guide groove (4) fixedly arranged laterally on the water tank (1) and two rotating wheels (2) respectively rotatably connected to the two outer sides of the water tank (1). A belt is pulled between the two rotating wheels (2). Several scrapers (3) are arranged alternately on the outer side of the belt. One of the rotating wheels (2) is driven by a reduction motor. The guide groove (4) includes a guide plate (41), a baffle (42) that cooperates with the scraper (3), and a limiting plate (43) located above the baffle (42). The groove opening of the guide groove (4) faces the water inlet side. The guide plate (41) is partially located below the surface of the water tank (1). The baffle (42) and the limiting plate (43) are both located above the water tank (1).

2. The defoaming device for wastewater treatment according to claim 1, characterized in that, An aeration structure is provided at the bottom of the water tank (1) between the guide channel (4) and the water inlet.

3. The defoaming device for wastewater treatment according to claim 1, characterized in that, The scraper (3) and the cross section of the water tank (1) are inclined at an angle of 15 to 30°.

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