A secondary sedimentation tank effluent weir cleaning system

Abstract

The utility model discloses a secondary sedimentation tank outlet weir cleaning system, including an ultrasonic power supply, an ultrasonic transducer and an ultrasonic vibrator, the ultrasonic power supply is electrically connected to the ultrasonic transducer through a cable, a suspension hanger is fixed on the top of the ultrasonic transducer, the suspension hanger is fixed on the scraper skimming bridge arm of the secondary sedimentation tank, the suspension hanger suspends the ultrasonic transducer below the scraper skimming bridge arm, an ultrasonic vibrator is installed on the bottom of the ultrasonic transducer, and the bottom of the ultrasonic vibrator extends into the water body between the outlet weir and the scum baffle. The utility model adopts ultrasonic cleaning technology, which is thorough and efficient in cleaning, has an integrated design, and has a low failure rate and maintenance cost. All components are designed and installed on the existing secondary sedimentation tank scraper skimming bridge arm, with a simple structure, a low failure rate, no need for other modifications, low investment cost, and can be quickly installed and operated. It can achieve continuous automatic operation when there is sufficient light, does not require special personnel on duty, and has almost no operation and maintenance costs.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to a secondary sedimentation tank outlet weir cleaning system. Background Art

[0002] The secondary sedimentation tank is an important part of the activated sludge system in the sewage treatment plant. It is used to separate mud and water, clarify the mixed liquor, concentrate the sludge and return the separated sludge to the biological treatment section. The effect of the secondary sedimentation tank directly affects the effluent quality and the concentration of the returned sludge of the sewage treatment plant. Since the supernatant still contains certain suspended matter and nutrients, when the sewage temperature rises and the light is sufficient, moss or algae are easy to grow on the effluent triangular weir plate, affecting the effluent effect; when the sewage temperature drops in winter, the sludge precipitation and concentration effect will deteriorate, the effluent suspended matter content will increase, and then a large amount of suspended matter will adhere to the effluent triangular weir plate, resulting in poor effluent water quality.

[0003] There are two main types of existing secondary sedimentation tank outlet weir cleaning devices. One of the cleaning methods is to use physical methods such as brushes or high-pressure water guns for cleaning. This method is likely to cause a significant increase in suspended solids in the effluent in a short period of time, and the cleaning effect is not ideal; the other cleaning method is to use a special machine to clean through a rotating brush or a high-pressure water gun. However, this method still has problems such as complex structure, high device failure rate, inconvenient maintenance, and poor cleaning effect. It is difficult to achieve satisfactory cleaning effects in actual applications. Utility Model Content

[0004] The utility model aims to provide a secondary sedimentation tank effluent weir cleaning system to solve the technical problems described in the background technology.

[0005] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] A secondary sedimentation tank outlet weir cleaning system comprises an ultrasonic power supply, an ultrasonic transducer and an ultrasonic vibrator. The ultrasonic power supply is electrically connected to the ultrasonic transducer through an electric cable. A suspension hanger is fixed to the top of the ultrasonic transducer. The suspension hanger is fixed to the scraper and slag skimming bridge arm of the secondary sedimentation tank, and the suspension hanger suspends the ultrasonic transducer below the scraper and slag skimming bridge arm. An ultrasonic vibrator is installed at the bottom end of the ultrasonic transducer, and the bottom end of the ultrasonic vibrator extends into the water body between the outlet weir and the slag baffle.

[0007] Preferably, it also includes a solar photovoltaic panel, and the solar photovoltaic panel is electrically connected to the ultrasonic power supply through a cable.

[0008] Preferably, the ultrasonic power supply is placed and fixed on the scraper skimming bridge arm, the solar photovoltaic panel is arranged above the ultrasonic power supply to form a protective roof, and the solar photovoltaic panel is fixed on the scraper skimming bridge arm through a supporting frame.

[0009] Preferably, the solar photovoltaic panel and ultrasonic power supply are arranged at the starting point of the slag skimming bridge arm of the scraper.

[0010] Preferably, a flexible vibration-damping gasket is provided between the suspension hanger and the scraper skimming bridge arm.

[0011] Preferably, the ultrasonic power supply is also equipped with an energy storage battery.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model adopts ultrasonic cleaning technology, which is thorough and efficient. The ultrasonic cleaning technology uses cavitation to generate bubbles, and forms impact to penetrate into the gaps and voids between the dirt layer and the surface of the water outlet weir. Since the small bubbles and the sound pressure expand and contract synchronously, the physical force like peeling skin acts on the dirt layer repeatedly, and the dirt layer is peeled off layer by layer. The bubbles continue to penetrate inward until the dirt layer is completely peeled off. At the same time, ultrasound can also destroy the structural function of phycobilisomes and interfere with the synthesis pathway of chlorophyll, thereby inhibiting the growth of algae. Therefore, the triangular water outlet weir of the secondary sedimentation tank can be thoroughly cleaned to prevent the growth of moss and the attachment of suspended matter. The cleaning effect is far better than brush scrubbing and high-pressure washing;

[0014] 2. The utility model can be driven by solar energy, without additional energy consumption, energy-saving and environmentally friendly. Compared with the brush mechanical cleaning driven by a motor and the high-pressure flushing driven by a submersible sewage pump, the solar ultrasonic cleaning system uses solar photovoltaic power generation technology to provide power drive, does not require an external power supply, and is more energy-saving and environmentally friendly;

[0015] 3. The utility model has an integrated design with low failure rate and maintenance cost. All components of the utility model are designed to be installed on the existing secondary sedimentation tank scraper slag skimming bridge arm. No separate walking device is set. It has a simple structure, low failure rate, and no need for other modifications. It has a low investment cost and can be quickly installed and operated. It can achieve continuous and automatic operation when there is sufficient light, without the need for special personnel on duty, and there is almost no operation and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or other aspects and advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only schematic and do not limit the present invention, wherein:

[0017] Figure 1 It is a structural schematic diagram of a secondary sedimentation tank outlet weir cleaning system involved in the utility model;

[0018] Figure 2 The utility model is a structural schematic diagram of a secondary sedimentation tank outlet weir cleaning system at the outlet weir.

[0019] Figure numerals: 1. Solar photovoltaic panel; 2. Ultrasonic power supply; 3. Cable; 4. Ultrasonic transducer; 5. Ultrasonic vibrator; 6. Support frame; 7. Suspension hanger; 8. Secondary sedimentation tank; 9. Sludge scraper skimming bridge arm; 10. Outlet weir; 11. Scum baffle. DETAILED DESCRIPTION

[0020] Hereinafter, an embodiment of a secondary sedimentation tank effluent weir cleaning system of the utility model will be described with reference to the accompanying drawings. The embodiments recorded herein are specific embodiments of the utility model, which are used to illustrate the concept of the utility model, are explanatory and exemplary, and should not be interpreted as limiting the implementation mode of the utility model and the scope of the utility model. In addition to the embodiments recorded herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments recorded herein.

[0021] In the description of the present invention, it should be noted that the terms "front", "rear", "left", "right", "top", "bottom", "up", "down", "inside", "outside", "horizontal", "longitudinal", "vertical", "oblique" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the utility model and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structure of various components of the embodiments of the utility model, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention and are not intended to limit the scope of the present invention. Figure 1-2 , the preferred embodiments of the utility model are further described in detail:

[0024] like Figure 1-2As shown, the utility model preferably adopts a secondary sedimentation tank outlet weir cleaning system, including an ultrasonic power supply 2, an ultrasonic transducer 4 and an ultrasonic vibrator 5, wherein the ultrasonic power supply 2 is electrically connected to the ultrasonic transducer 4 through a cable 3, a suspension hanger 7 is fixed to the top of the ultrasonic transducer 4, the suspension hanger 7 is fixed to the scraper skimming bridge arm 9 of the secondary sedimentation tank 8, and the suspension hanger 7 suspends the ultrasonic transducer 4 below the scraper skimming bridge arm 9, an ultrasonic vibrator 5 is installed at the bottom end of the ultrasonic transducer 4, and the bottom end of the ultrasonic vibrator 5 extends to the water body between the outlet weir 10 and the scum baffle 11, wherein the transducer 4 is located above the water surface, and at least half of the length of the ultrasonic vibrator 5 is immersed in the water surface. The ultrasonic vibrator 5 can select a rod-shaped ultrasonic vibrator or a plate-shaped ultrasonic vibrator according to the specific scene to better play the cleaning role. The ultrasonic power source 2 is usually called an ultrasonic generator or an ultrasonic generator. Its function is to convert electrical energy into a high-frequency alternating current signal that matches the ultrasonic transducer 4, and then convert it into a high-frequency mechanical oscillation through the ultrasonic transducer 4. The ultrasonic vibrator 5 forms a cavitation effect in the liquid to make the microbubbles in the liquid expand rapidly and then suddenly close, generating shock waves and jets, which impact the moss and suspended matter attached to the triangular outlet weir 10, causing them to be crushed, peeled off, and fall off, and discharged together with the outlet water, thereby achieving a thorough cleaning of the outlet weir 10 of the secondary sedimentation tank 8;

[0025] Among them, the ultrasonic power supply 2 can be directly powered by the sewage treatment plant circuit, but for the purpose of energy conservation and emission reduction, a solar photovoltaic panel 1 can be further added, and the solar photovoltaic panel 1 can be electrically connected to the ultrasonic power supply 2 through the cable 3 to power the ultrasonic power supply 2. At this time, the ultrasonic power supply 2 and the solar photovoltaic panel 1 can be both set on the scraper skimming bridge arm 9 to make more full use of the top space of the existing scraper skimming bridge arm 9. The ultrasonic power supply 2 is placed and fixed on the scraper skimming bridge arm 9. The preferred fixing method is to add a cage frame at the top of the scraper skimming bridge arm 9 by bolting, clamping or welding, and place the ultrasonic power supply 2 in the cage frame to In order to prevent the ultrasonic power supply 2 from sliding off the scraper slag bridge arm 9 when the scraper slag bridge arm 9 is in operation, the ultrasonic power supply 2 should be selected from products with sufficient weather resistance to better adapt to the on-site installation environment. Considering that the ultrasonic power supply 2 is inevitably affected by environmental factors when exposed to the sun or wind and rain for a long time, it is advisable to set the solar photovoltaic panel 1 above the ultrasonic power supply 2 to form a protective roof, and use the solar photovoltaic panel 1 to shade the ultrasonic power supply 2 from the sun or rain to avoid the ultrasonic power supply 2 from being affected by the sun or rain. The solar photovoltaic panel 1 can be fixed on the scraper slag bridge arm 9 through the support frame 6 to achieve stable installation;

[0026] During actual installation, a flexible vibration-damping gasket may be installed between the suspension bracket 7 and the scraper skimming bridge arm 9 to reduce the vibration effect of the ultrasonic vibrator 5 on the scraper skimming bridge arm 8. Of course, according to the actual situation on site, if conditions permit, the solar photovoltaic panel 1 and the ultrasonic power supply 2 may be installed and fixed at the starting point of the scraper skimming bridge arm 9 (i.e., away from the cantilever end) to reduce the effect of the device weight on the scraper skimming bridge arm 9;

[0027] The ultrasonic power supply 2 is also equipped with a high-capacity energy storage battery. The ultrasonic power supply 2 is equipped with a high-capacity energy storage battery. When the weather is clear, the energy converted by the solar photovoltaic panel 1 can be stored in the high-capacity energy storage battery, which is convenient for it to stably and continuously power the system, improve the stability of the system, and better achieve the purpose of cleaning the water outlet weir 10.

[0028] When the utility model is in operation, under sufficient light conditions, electricity is first generated through the solar photovoltaic panel 1 and stored in a high-capacity energy storage battery. When the stored electricity meets the startup and operation requirements of the equipment, the switch is turned on (usually, the switch of the ultrasonic power supply 2 is set to the normally open state), the ultrasonic power supply 2 can automatically operate, send out a high-frequency oscillation signal, and transmit it to the ultrasonic transducer 4 through the cable 3. The ultrasonic transducer 4 converts the high-frequency oscillation signal into a high-frequency mechanical oscillation, which is transmitted by the ultrasonic vibrator 5 to the supernatant between the outlet weir 10 and the scum baffle 11, so as to achieve efficient cleaning of the outlet weir 10 of the secondary sedimentation tank 8 by forming a cavitation effect.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A secondary sedimentation tank effluent weir cleaning system, characterized in that: The ultrasonic transducer (4) comprises an ultrasonic power supply (2), an ultrasonic transducer (4) and an ultrasonic vibrator (5), wherein the ultrasonic power supply (2) is electrically connected to the ultrasonic transducer (4) via an electric cable (3), a suspension hanger (7) is fixed to the top of the ultrasonic transducer (4), the suspension hanger (7) is fixed to a sludge scraper bridge arm (9) of a secondary sedimentation tank (8), and the suspension hanger (7) suspends the ultrasonic transducer (4) below the sludge scraper bridge arm (9), and an ultrasonic vibrator (5) is installed at the bottom of the ultrasonic transducer (4), and the bottom of the ultrasonic vibrator (5) extends into the water body between a water outlet weir (10) and a sludge baffle (11).

2. A secondary sedimentation tank effluent weir cleaning system according to claim 1, characterized in that: It also comprises a solar photovoltaic panel (1), wherein the solar photovoltaic panel (1) is electrically connected to an ultrasonic power source (2) via a cable (3).

3. A secondary sedimentation tank effluent weir cleaning system according to claim 2, characterized in that: The ultrasonic power source (2) is placed and fixed on the scraper slag skimming bridge arm (9), the solar photovoltaic panel (1) is arranged above the ultrasonic power source (2) to form a protective roof, and the solar photovoltaic panel (1) is fixed on the scraper slag skimming bridge arm (9) via a support frame (6).

4. A secondary sedimentation tank effluent weir cleaning system according to claim 2, characterized in that: The solar photovoltaic panel (1) and the ultrasonic power supply (2) are arranged at the starting point of the sludge scraping bridge arm (9) of the sludge scraper.

5. A secondary sedimentation tank effluent weir cleaning system according to claim 1, characterized in that: A flexible vibration-damping gasket is provided between the suspension hanger (7) and the scraper skimming bridge arm (9).

6. A secondary sedimentation tank effluent weir cleaning system according to claim 2, characterized in that: The ultrasonic power supply (2) is also equipped with an energy storage battery.

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