A blowing pipe for enhancing the skimming effect of a skimming pipe

Abstract

The application discloses a blowing pipe for enhancing skimming effect of a skimming pipe, and belongs to the field of sewage treatment. The blowing pipe for enhancing skimming effect of the skimming pipe is applied to a secondary sedimentation tank which is provided with a four-shaft nonmetallic mud scraper, a skimming pipe and a water outlet groove, and the four-shaft nonmetallic mud scraper is provided with a mud scraper upper idler. The blowing pipe for enhancing skimming effect of the skimming pipe comprises a DN65 air supply main pipe, a DN50 air supply stem pipe and a DN15 air supply branch pipe. The DN65 air supply main pipe is arranged along a top wall of the secondary sedimentation tank. The DN65 air supply main pipe is connected with the DN50 air supply stem pipe at the mud scraper upper idler in the four-shaft nonmetallic mud scraper. The DN50 air supply stem pipe is distributed along a length direction of the skimming pipe, and the DN50 air supply stem pipe is arranged between the mud scraper upper idler and the skimming pipe. The blowing pipe for enhancing skimming effect of the skimming pipe has the beneficial effect of solving the problem that there is a "blank area" between the skimming pipe and the mud scraper upper idler in the existing secondary sedimentation tank, and the floating sludge needs to enter the skimming pipe through water flow trend and is relatively slow.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment, and more specifically, to an air blowing pipe that enhances the skimming effect of a skimming pipe. Background Technology

[0002] In conventional wastewater treatment, secondary sedimentation tanks typically employ quadrupedal non-metallic sludge scrapers. These scrapers serve a dual purpose: scraping sludge from the bottom and removing scum from the surface. To ensure effective scum removal and prevent the skimming pipe from interfering with the scraper's operation, the skimming pipe is generally installed approximately 0.8m before the effluent channel (or tank wall). However, this arrangement results in a considerable distance between the skimming pipe and the upper idler wheel of the scraper, with a gap of approximately 2.0m between them. Figure 1 As shown, this results in a "blank area" between the idler wheel and the skimming pipe on the sludge scraper. The scum can only enter the skimming pipe through the water flow, which is relatively slow, making it difficult to achieve the best skimming effect. Therefore, this application proposes an air blowing pipe to enhance the skimming effect of the skimming pipe and solve the shortcomings of the prior art. Utility Model Content

[0003] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0004] The purpose of this application is to address the shortcomings of the prior art by providing an air blowing pipe that enhances the skimming effect of the skimming pipe, thereby solving the problem that in the prior art, there is a "blank area" between the idler wheel on the scraper and the skimming pipe in the secondary sedimentation tank, and the floating scum can only enter the skimming pipe through the water flow, which is relatively slow and affects the skimming effect.

[0005] To achieve the above objectives, this application provides the following technical solution: An air blowing pipe for enhancing the skimming effect of a skimming pipe is applied to a secondary sedimentation tank equipped with a four-axis non-metallic sludge scraper, a skimming pipe, and an effluent trough. The four-axis non-metallic sludge scraper has an upper idler wheel. The air blowing pipe for enhancing the skimming effect of the skimming pipe includes a DN65 main air pipe, a DN50 main air pipe, and a DN15 branch air pipe. The DN65 main air pipe is arranged along the top wall of the secondary sedimentation tank. The DN65 main air pipe is connected to the DN50 main air pipe at the upper idler wheel of the four-axis non-metallic sludge scraper. The DN50 main air pipe is distributed along the length of the skimming pipe and is positioned between the upper idler wheel of the sludge scraper and the skimming pipe. A DN15 branch air pipe is provided on the side of the DN50 main air pipe facing the skimming pipe. Multiple DN15 branch air pipes are arranged at equal intervals along the length of the DN50 main air pipe.

[0006] Furthermore, the end of the DN65 venting main pipe that is away from the DN50 venting main pipe extends out of the secondary sedimentation tank and is connected to the air source of the aeration system of the sewage treatment plant.

[0007] Furthermore, a DN65 valve is installed on the DN65 venting main pipe, and the DN65 valve is located outside the secondary sedimentation tank.

[0008] Furthermore, the DN65 main ventilation pipe, the DN50 main ventilation pipe, and the DN15 branch ventilation pipe are all installed above the skimming pipe, and the DN15 branch ventilation pipe is inclined downwards towards the skimming pipe.

[0009] Furthermore, the DN15 ventilation branch pipe is tilted downwards at an angle of 25 to 35°.

[0010] Furthermore, a pipe connector is provided at the connection between the DN65 main ventilation pipe and the DN50 main ventilation pipe. The pipe connector is a tee joint. The DN50 main ventilation pipe has an upward bend and protrusion in the middle. The DN65 main ventilation pipe is connected to the top of the bend and protrusion of the DN50 main ventilation pipe through the pipe connector, so that the DN50 main ventilation pipe is distributed lower than the DN65 main ventilation pipe.

[0011] Furthermore, a pipe support is connected to the DN50 vent pipe, and multiple pipe supports are evenly arranged along the length of the DN50 vent pipe. A top plate is provided on the top of the secondary sedimentation tank. The pipe support is a hanger rod, and the top end of the hanger rod is fixed to the top plate with expansion bolts. The bottom end of the hanger rod is connected and fixed to the DN50 vent pipe with a clamp.

[0012] The beneficial effects of this application are as follows: By connecting to the aeration system of the sewage treatment plant, and under the control of the DN65 valve, gas is blown out through the DN65 main vent pipe and the DN50 main vent pipe via multiple DN15 branch pipes. The blowing of air causes the scum on the surface of the secondary sedimentation tank to move towards the skimming pipe. Finally, the skimming pipe is used to skim off the scum, thereby enhancing the skimming effect of the skimming pipe through air blowing. This solves the problem in the existing secondary sedimentation tank where there is a "blank area" on the sewage surface between the skimming pipe and the idler wheel on the sludge scraper, and the scum needs to pass through the water flow to enter the skimming pipe, which is relatively slow. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0014] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0015] In the attached diagram: Figure 1 This is a top view of the existing secondary sedimentation tank; Figure 2 A top view of the secondary sedimentation tank after the air blowing pipe has been installed; Figure 3 A schematic diagram of the structure at the location where the DN65 main ventilation pipe and DN50 ventilation pipe are installed in the secondary sedimentation tank; Figure 4 A schematic diagram of the cross-sectional structure of the secondary sedimentation tank after the air blowing pipe is installed; Figure 5 A schematic diagram of the cross-sectional structure at the location where the DN65 main ventilation pipe and DN50 ventilation pipe are installed in the secondary sedimentation tank; Figure 6 A side view of the section where the DN65 main vent pipe and DN50 vent pipe are installed in the secondary sedimentation tank. Figure 7 Schematic diagram of the structure of DN65 ventilation main pipe and DN50 ventilation main pipe; Figure 8 This is a side view of a DN50 ventilation main.

[0016] Attached reference numerals: 1. Secondary sedimentation tank; 2. Four-axis non-metallic sludge scraper; 3. Skimming pipe; 4. Outlet trough; 5. DN65 main vent pipe; 6. DN50 vent pipe; 7. DN65 valve; 8. Pipe support; 9. Upper idler wheel of the sludge scraper; 10. DN15 vent branch pipe; 11. Pipe connector; 12. Top plate. Detailed Implementation

[0017] The following is a detailed description of an air blowing pipe for enhancing the skimming effect of a skimming pipe provided in this application, with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.

[0018] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0019] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0020] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Reference Figure 1-8 As shown, this utility model provides an air blowing pipe to enhance the skimming effect of the skimming pipe, applied to a secondary sedimentation tank 1 equipped with a four-axis non-metallic sludge scraper 2, a skimming pipe 3, and an outlet tank 4. The four-axis non-metallic sludge scraper 2 has an upper idler wheel 9. The air blowing pipe to enhance the skimming effect of the skimming pipe includes a DN65 main air pipe 5, a DN50 main air pipe 6, and a DN15 branch air pipe 10. The DN65 main air pipe 5 is arranged along the top wall of the secondary sedimentation tank 1, and the DN65 main air pipe 5 is connected to the DN50 main air pipe 6 at the upper idler wheel 9 of the four-axis non-metallic sludge scraper 2. The air main pipe 6 is distributed along the length of the slag skimmer 3, and the DN50 air main pipe 6 is set between the idler wheel 9 on the sludge scraper and the slag skimmer 3. A DN15 air branch pipe 10 is set on the side of the DN50 air main pipe 6 facing the slag skimmer 3. Multiple DN15 air branch pipes 10 are arranged at equal intervals along the length of the DN50 air main pipe 6. Among them, the end of the DN65 air main pipe 5 away from the DN50 air main pipe 6 extends out of the secondary sedimentation tank 1 and is connected to the air source of the aeration system of the sewage treatment plant. A DN65 valve 7 is installed on the DN65 air main pipe 5, and the DN65 valve 7 is located outside the secondary sedimentation tank 1. By connecting to the aeration system of the sewage treatment plant, under the control of DN65 valve 7, gas is blown out through multiple DN15 aeration branch pipes 10 via DN65 main aeration pipe 5 and DN50 aeration pipe 6. The blowing of air causes the scum on the surface of the secondary sedimentation tank 1 to move toward the skimming pipe 3. Finally, the skimming pipe 3 is used to skim off the scum, thereby achieving the effect of aeration to enhance the skimming effect of the skimming pipe 3.

[0022] Furthermore, in this embodiment, the DN65 main ventilation pipe 5, the DN50 main ventilation pipe 6, and the DN15 branch ventilation pipe 10 are all positioned higher than the skimming pipe 3. Specifically, the DN65 main ventilation pipe 5, the DN50 main ventilation pipe 6, and the DN15 branch ventilation pipe 10 are all positioned higher than the liquid surface. The DN15 branch ventilation pipe 10 is inclined downwards towards the skimming pipe 3, with the downward inclination angle of the DN15 branch ventilation pipe 10 being 25 to 35 degrees. This allows the gas blown out by the DN15 branch ventilation pipe 10 to better blow the scum on the liquid surface in the secondary sedimentation tank 1 toward the skimming pipe 3.

[0023] Furthermore, in this embodiment, a pipe connector 11 is provided at the connection between the DN65 venting main pipe 5 and the DN50 venting main pipe 6. The pipe connector 11 is a tee joint. The DN50 venting main pipe 6 has an upwardly curved "n"-shaped protrusion in the middle. The DN65 venting main pipe 5 is connected to the top of the curved protrusion of the DN50 venting main pipe 6 through the pipe connector 11, so that the DN50 venting main pipe 6 is distributed lower than the DN65 venting main pipe 5. This structural design makes the DN65 venting main pipe 5 as close as possible to the skimming pipe 3. A pipe support 8 is connected to the DN50 venting main pipe 6. Multiple pipe support 8s are evenly arranged along the length of the DN50 venting main pipe 6. A top plate 12 is provided on the top of the secondary sedimentation tank 1. The pipe support 8 is a hanger. The top of the hanger is fixed to the top plate 12 with expansion bolts, and the bottom of the hanger is connected and fixed to the DN50 venting main pipe 6 with a clamp.

[0024] In this embodiment, the DN65 main ventilation pipe 5, the DN50 main ventilation pipe 6, the DN15 branch ventilation pipe 10, and the pipe support 8 are made of SS304.

[0025] Working principle: The air blowing pipe that enhances the skimming effect of the skimming pipe first fixes the DN50 venting main pipe 6 to the bottom of the top plate 12 of the secondary sedimentation tank 1 with expansion bolts and pipe support 8. Multiple DN15 venting branch pipes 10 are reserved on the DN50 venting main pipe 6. The DN50 venting main pipe 6 is connected to the DN65 venting main pipe 5 through the pipe connector 11. One end of the DN65 venting main pipe 5 that extends out of the secondary sedimentation tank 1 is connected to the DN65 valve 7 and is connected to the air source of the sewage treatment plant's aeration system. Under the control of the DN65 valve 7, the gas is blown out through the DN65 venting main pipe 5 and the DN50 venting main pipe 6 through the multiple DN15 venting branch pipes 10. The air blowing causes the scum on the liquid surface of the secondary sedimentation tank 1 to move towards the skimming pipe 3. Finally, the skimming pipe 3 is used to skim off the scum, thereby achieving the skimming effect of the air blowing enhanced by the skimming pipe 3.

[0026] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0027] It should be noted that this application covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this application. To provide the public with a thorough understanding of this application, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand this application without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this application, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0028] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An air blowing pipe for enhancing the skimming effect of a skimming pipe, applied to a secondary sedimentation tank (1) equipped with a four-axis non-metallic scraper (2), a skimming pipe (3), and an outlet tank (4), wherein the four-axis non-metallic scraper (2) has an idler wheel (9) on the scraper, characterized in that, The air blowing pipe that enhances the skimming effect of the skimming pipe includes a DN65 main air pipe (5), a DN50 main air pipe (6), and a DN15 branch air pipe (10). The DN65 main ventilation pipe (5) is arranged along the top wall of the secondary sedimentation tank (1). The DN65 main ventilation pipe (5) is connected to the idler wheel (9) of the scraper in the four-axis non-metallic scraper (2) with a DN50 main ventilation pipe (6). The DN50 main ventilation pipe (6) is distributed along the length of the skimming pipe (3) and is located between the idler wheel (9) of the scraper and the skimming pipe (3). A DN15 branch ventilation pipe (10) is provided on the side of the DN50 main ventilation pipe (6) facing the skimming pipe (3). Multiple DN15 branch ventilation pipes (10) are arranged at equal intervals along the length of the DN50 main ventilation pipe (6).

2. The air blowing pipe for enhancing the skimming effect of the skimming pipe according to claim 1, characterized in that: The end of the DN65 venting main pipe (5) that is away from the DN50 venting main pipe (6) extends out of the secondary sedimentation tank (1) and is connected to the air source of the aeration system of the sewage treatment plant.

3. The air blowing pipe for enhancing the skimming effect of the skimming pipe according to claim 1, characterized in that: The DN65 ventilation main pipe (5) is equipped with a DN65 valve (7), which is located outside the secondary sedimentation tank (1).

4. The air blowing pipe for enhancing the skimming effect of the skimming pipe according to claim 1, characterized in that: The DN65 main ventilation pipe (5), DN50 main ventilation pipe (6) and DN15 branch ventilation pipe (10) are all set higher than the skimming pipe (3), and the DN15 branch ventilation pipe (10) is distributed downwards towards the skimming pipe (3).

5. The air blowing pipe for enhancing the skimming effect of the skimming pipe according to claim 4, characterized in that: The DN15 ventilation branch pipe (10) is tilted downward at an angle of 25 to 35°.

6. The air blowing pipe for enhancing the skimming effect of the skimming pipe according to claim 1, characterized in that: A pipe connector (11) is provided at the connection between the DN65 main ventilation pipe (5) and the DN50 main ventilation pipe (6). The pipe connector (11) is a tee joint. The DN50 main ventilation pipe (6) has an "n"-shaped upward bend at the middle position. The DN65 main ventilation pipe (5) is connected to the top of the bend of the DN50 main ventilation pipe (6) through the pipe connector (11), so that the DN50 main ventilation pipe (6) is distributed lower than the DN65 main ventilation pipe (5).

7. The air blowing pipe for enhancing the skimming effect of the skimming pipe according to claim 1, characterized in that: The DN50 ventilation main pipe (6) is connected to a pipe support (8). Multiple pipe support (8) are evenly arranged along the length of the DN50 ventilation main pipe (6). The top of the secondary sedimentation tank (1) is provided with a top plate (12). The pipe support (8) is a hanger. The top of the hanger is fixed to the top plate (12) with expansion bolts, and the bottom of the hanger is connected and fixed to the DN50 ventilation main pipe (6) with a clamp.

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