A kind of hydrochloric acid mechanism for sewage treatment with air floatation

Abstract

The utility model discloses a kind of hydrochloric acid mechanisms for air flotation dosing for sewage treatment, including air flotation machine outlet pipe and hydrochloric acid storage tank, the air flotation machine outlet pipe, hydrochloric acid storage tank are fixedly installed with air flotation machine, the inside of the air flotation machine outlet pipe is equipped with mixing pipe, the top of the mixing pipe is fixed with wind scooper, one side of the mixing pipe is fixed with conveying pipe, one end of the conveying pipe is extended to outside through air flotation machine outlet pipe, the outer side of this end of the conveying pipe is equipped with ration tank, the bottom of the hydrochloric acid storage tank is fixed with conveying pump, the liquid outlet end of the conveying pump is fixed with adding pipe.The utility model injects hydrochloric acid inside ration tank inside by conveying pump, adding pipe, which is located in hydrochloric acid storage tank, then by ration tank, hydrochloric acid is sent into mixing pipe inside, simultaneously, gas is introduced into mixing pipe using wind scooper, using high-speed flowing gas to drive hydrochloric acid flow in mixing pipe, accelerate the distribution rate of hydrochloric acid.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a flotation hydrochloric acid dosing mechanism for wastewater treatment. Background Technology

[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge into a water body or reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering, and is increasingly entering the daily lives of ordinary people. In the process of wastewater treatment, air flotation machines are often used to separate solids and liquids from wastewater.

[0003] An air flotation machine is a water treatment device that uses a dissolved air system to generate a large number of microbubbles in water. This allows air to adhere to suspended particles in the form of highly dispersed microbubbles, creating a density less than that of water. By utilizing the principle of buoyancy, these particles float on the water surface, thus achieving solid-liquid separation. During the use of an air flotation machine, it is often necessary to add a certain amount of hydrochloric acid to neutralize the pH value of the wastewater.

[0004] However, the diffusion rate of hydrochloric acid in wastewater is slow during the addition process, which means that it takes a long time for the hydrochloric acid to take effect, thus affecting the actual treatment efficiency of wastewater. Therefore, it does not meet the existing requirements. To address this, we propose an air flotation hydrochloric acid dosing mechanism for wastewater treatment. Utility Model Content

[0005] The purpose of this invention is to provide a hydrochloric acid dosing mechanism for wastewater treatment, in order to solve the problem mentioned in the background art that the hydrochloric acid has a slow diffusion rate in wastewater during the addition process, which makes it take a long time for the hydrochloric acid to take effect and affects the actual treatment efficiency of wastewater.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydrochloric acid dosing mechanism for air flotation in wastewater treatment, comprising an air outlet pipe of an air flotation machine and a hydrochloric acid storage tank. The air outlet pipe and the hydrochloric acid storage tank are fixedly installed with the air flotation machine. A mixing pipe is provided inside the air outlet pipe. A wind guide is fixed to the top of the mixing pipe. A conveying pipe is fixed to one side of the mixing pipe. One end of the conveying pipe extends through the air outlet pipe to the outside. A metering tank is provided on the outside of this end of the conveying pipe. A conveying pump is fixed to the bottom of the hydrochloric acid storage tank. An adding pipe is fixed to the outlet end of the conveying pump. The bottom end of the adding pipe extends through the bottom of the metering tank to the inside of the metering tank.

[0007] Preferably, a one-way valve is provided on the inner side of the end of the adding pipe and the delivery pipe connected to the metering tank, and on the top of the mixing pipe.

[0008] Preferably, the inner side of the top of the mixing tube is further provided with a plurality of drainage plates arranged in a ring array. The drainage plates are spiral-shaped and fixed to the mixing tube. The drainage plates are located below the one-way valve.

[0009] Preferably, a fixing rod is fixed to the upper end of the metering tank, and a fixing plate is fixed to the top of the fixing rod. One end of the fixing plate is fixed to the hydrochloric acid storage tank.

[0010] Preferably, an adjustable electric telescopic rod is fixed to the bottom surface of the fixed plate near the end of the metering tank. The bottom end of the adjustable electric telescopic rod extends through the metering tank into the interior of the metering tank. The bottom end of the adjustable electric telescopic rod is in sliding contact with the metering tank, and an adjusting plate is fixed to the bottom end of the adjustable electric telescopic rod.

[0011] Preferably, an infrared ranging sensor is fixed on the upper surface of the adjusting plate, and a signal receiver is provided directly above the infrared ranging sensor. The signal receiver is fixed on the top of the metering tank, and the signal receiver, the adjusting electric telescopic rod, and the control terminal are electrically connected.

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

[0013] 1. This utility model uses a delivery pump and a adding pipe to inject hydrochloric acid from the hydrochloric acid storage tank into the metering tank. Then, the hydrochloric acid is sent into the mixing pipe through the metering tank. At the same time, a guide hood is used to introduce gas into the mixing pipe. The high-speed flow of gas drives the hydrochloric acid flow inside the mixing pipe, which accelerates the distribution rate and uniformity of hydrochloric acid, speeds up the treatment of sewage in the sewage tank, and improves the actual sewage treatment efficiency.

[0014] 2. This utility model controls the quantitative dispensing of hydrochloric acid by controlling the actual height position of the adjusting plate to change the internal capacity of the metering tank. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the air outlet pipe of the air flotation machine of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the metering container of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the diversion plate of this utility model.

[0019] In the diagram: 1. Air flotation machine outlet pipe; 2. Hydrochloric acid storage tank; 3. Transfer pump; 4. Addition pipe; 5. Metering tank; 6. Adjustable electric telescopic rod; 7. Fixing plate; 8. Transfer pipe; 9. Adjusting plate; 10. Infrared ranging sensor; 11. Signal receiver; 12. One-way valve; 13. Mixing pipe; 14. Air guide hood; 15. Drainage plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] like Figures 1 to 4 As shown, a hydrochloric acid dosing mechanism for wastewater treatment using air flotation includes an air outlet pipe 1 for an air flotation machine and a hydrochloric acid storage tank 2. The air outlet pipe 1 and the hydrochloric acid storage tank 2 are fixedly installed with the air flotation machine. A mixing pipe 13 is provided inside the air outlet pipe 1. An air guide hood 14 is fixed to the top of the mixing pipe 13. A conveying pipe 8 is fixed to one side of the mixing pipe 13. One end of the conveying pipe 8 extends through the air outlet pipe 1 to the outside. A metering tank 5 is provided on the outside of this end of the conveying pipe 8. A fixing rod is fixed to the upper end of the metering tank 5. A fixing plate 7 is fixed to the top of the fixing rod. One end of the fixing plate 7 is fixed to the hydrochloric acid storage tank 2.

[0022] An adjustable electric telescopic rod 6 is fixed to the bottom surface of the fixed plate 7 near the end of the metering tank 5. The bottom end of the adjustable electric telescopic rod 6 extends through the metering tank 5 into the interior of the metering tank 5. The bottom end of the adjustable electric telescopic rod 6 slides in contact with the metering tank 5. An adjusting plate 9 is fixed to the bottom end of the adjustable electric telescopic rod 6. The adjustable electric telescopic rod 6 controls the adjusting plate 9 to move up and down, thereby changing the internal capacity of the metering tank 5. The downward movement of the adjusting plate 9 can discharge the hydrochloric acid inside the metering tank 5.

[0023] An infrared ranging sensor 10 is fixed on the upper surface of the regulating plate 9. A signal receiver 11 is located directly above the infrared ranging sensor 10. The signal receiver 11 is fixed on the top of the metering tank 5. The signal receiver 11, the regulating electric telescopic rod 6 and the control terminal are electrically connected. The distance between the regulating plate 9 and the top of the metering tank 5 is monitored by the infrared ranging sensor 10 and the signal receiver 11, thereby controlling the moving distance and actual position of the regulating plate 9, and thus controlling the actual capacity inside the metering tank 5.

[0024] A delivery pump 3 is fixed to the bottom of the hydrochloric acid storage tank 2. An addition pipe 4 is fixed to the outlet end of the delivery pump 3. The bottom end of the addition pipe 4 extends through the bottom of the metering tank 5 and into the inside of the metering tank 5. The hydrochloric acid located inside the hydrochloric acid storage tank 2 is injected into the metering tank 5 through the delivery pump 3 and the addition pipe 4. Then, the hydrochloric acid is sent into the mixing tube 13 through the metering tank 5. At the same time, the gas is introduced into the mixing tube 13 by the air guide hood 14. The high-speed flow of gas drives the hydrochloric acid inside the mixing tube 13 to flow, thereby accelerating the distribution rate of the hydrochloric acid.

[0025] Multiple guide plates 15 are arranged in a ring array on the inner side of the top of the mixing tube 13. The guide plates 15 are spiral in shape and fixed to the mixing tube 13. The guide plates 15 are located below the one-way valve 12. The guide plates 15 guide the airflow entering the mixing tube 13 through the air guide shroud 14, so that the airflow flows downward spirally inside the mixing tube 13, cleaning the hydrochloric acid adhering to the inside of the mixing tube 13, and at the same time, making the hydrochloric acid and gas fully mixed.

[0026] One-way valves 12 are provided at the ends of the adding pipe 4 and the delivery pipe 8 that connect to the metering tank 5, as well as on the inner side of the top of the mixing pipe 13. The flow direction of hydrochloric acid and gas is controlled by the one-way valves 12 to prevent hydrochloric acid backflow.

[0027] Working Principle: When using an air flotation machine to separate solids and liquids in wastewater, the machine is first started, and gas is guided into the wastewater through the air outlet pipe 1. When adding hydrochloric acid, the power to the electric telescopic rod 6 and the delivery pump 3 is turned on and started. After the electric telescopic rod 6 starts, it drives the adjusting plate 9 to move up or down. During this process, the infrared ranging sensor 10 sends a laser signal to the signal receiver 11 in real time. The signal receiver 11 monitors the distance between the infrared ranging sensor 10 and itself in real time until the adjusting plate 9 reaches the specified height. The volume inside the metering tank 5 at this time is the amount of hydrochloric acid added. The hydrochloric acid is delivered into the metering tank 5 using the delivery pump 3 and the addition pipe 4. The hydrochloric acid fills the metering tank 5. Then, the electric telescopic rod 6 is adjusted to drive the adjusting plate 9 to move down. After the adjusting plate 9 moves down, hydrochloric acid is sent from the conveying pipe 8 into the mixing pipe 13. The hydrochloric acid flows down along the mixing pipe 13. At this time, the one-way valve 12 at the top of the mixing pipe 13 opens. Part of the airflow in the air outlet pipe 1 of the flotation machine enters the mixing pipe 13 along the air guide shroud 14. After the airflow comes into contact with the guide plate 15, it spirals inside the mixing pipe 13. The spiral airflow drives the hydrochloric acid vortex in the mixing pipe 13 to rotate. At this time, the airflow and hydrochloric acid mix with each other. When the airflow leaves the bottom of the mixing pipe 13, it drives the hydrochloric acid to flow rapidly in the sewage, which accelerates the distribution rate and uniformity of the hydrochloric acid, accelerates the treatment speed of the sewage in the sewage tank, and improves the actual sewage treatment efficiency.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A hydrochloric acid dosing mechanism for wastewater treatment using air flotation, comprising an air outlet pipe (1) for an air flotation unit and a hydrochloric acid storage tank (2), characterized in that: The air outlet pipe (1) of the air flotation machine and the hydrochloric acid storage tank (2) are fixedly installed with the air flotation machine. The air outlet pipe (1) of the air flotation machine is provided with a mixing pipe (13). The top of the mixing pipe (13) is fixed with a wind guide hood (14). A conveying pipe (8) is fixed on one side of the mixing pipe (13). One end of the conveying pipe (8) extends through the air outlet pipe (1) of the air flotation machine to the outside. A metering tank (5) is provided on the outside of this end of the conveying pipe (8). A conveying pump (3) is fixed at the bottom of the hydrochloric acid storage tank (2). An adding pipe (4) is fixed at the liquid outlet end of the conveying pump (3). The bottom end of the adding pipe (4) extends through the bottom of the metering tank (5) to the inside of the metering tank (5).

2. The air flotation hydrochloric acid dosing mechanism for wastewater treatment according to claim 1, characterized in that: One-way valves (12) are provided at the ends of the adding pipe (4), the conveying pipe (8) connected to the metering tank (5) and the inner side of the top of the mixing pipe (13).

3. The air flotation hydrochloric acid dosing mechanism for wastewater treatment according to claim 1, characterized in that: The mixing tube (13) has multiple drainage plates (15) arranged in a ring array on the inner side of its top end. The drainage plates (15) are spiral-shaped and fixed to the mixing tube (13). The drainage plates (15) are located below the one-way valve (12).

4. The air flotation hydrochloric acid dosing mechanism for wastewater treatment according to claim 1, characterized in that: The upper end of the metering tank (5) is fixed with a fixing rod, and the top end of the fixing rod is fixed with a fixing plate (7). One end of the fixing plate (7) is fixed to the hydrochloric acid storage tank (2).

5. The air flotation hydrochloric acid dosing mechanism for wastewater treatment according to claim 4, characterized in that: An adjusting electric telescopic rod (6) is fixed to the bottom surface of the fixed plate (7) near the end of the metering tank (5). The bottom end of the adjusting electric telescopic rod (6) extends through the metering tank (5) into the interior of the metering tank (5). The bottom end of the adjusting electric telescopic rod (6) slides in contact with the metering tank (5), and an adjusting plate (9) is fixed to the bottom end of the adjusting electric telescopic rod (6).

6. The air flotation hydrochloric acid dosing mechanism for wastewater treatment according to claim 5, characterized in that: An infrared ranging sensor (10) is fixed on the upper surface of the adjusting plate (9). A signal receiver (11) is provided directly above the infrared ranging sensor (10). The signal receiver (11) is fixed on the top of the metering tank (5). The signal receiver (11), the adjusting electric telescopic rod (6), and the control terminal are electrically connected.

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