Device for preventing water body of ozone reactor from reflowing

Abstract

The utility model discloses a device for preventing water backflow of an ozone reactor, which can safely, quickly and automatically avoid the risk that water flows back into an ozone generator and comprises the ozone generator and an oxidation reactor, and an ozone outlet of the ozone generator is connected to the oxidation reactor through an ozone delivery pipe. A pressure sensor and a first electric valve are sequentially arranged on the ozone delivery pipe behind the ozone outlet; a water body discharge pipe provided with a second electric valve and an ozone concentration detection sensor is connected into the ozone delivery pipe between the oxidation reactor and the first electric valve; a controller is arranged to control opening and closing of the first electric valve and the second electric valve according to signals of the pressure sensor and give an alarm according to signals of the ozone concentration detection sensor. The device has the advantages of being capable of automatically running to prevent water backflow of the ozone reactor, safe and fast.

Description

Technical Field

[0001] This utility model relates to a safety device for preventing water from flowing back into an ozone generator. Background Technology

[0002] Ozone has high oxidizing properties and can be further decomposed by adding catalysts to generate hydroxyl radicals, which react with many organic functional groups. Therefore, it has a significant effect on deodorization, decolorization, sterilization and degradation of organic matter in water. Moreover, the reaction process is fast, efficient, simple to operate and clean and pollution-free, and has become a commonly used treatment process in the wastewater industry.

[0003] An ozone reaction system mainly consists of an ozone generator and an oxidation reactor. The ozone generator produces a certain concentration of ozone, which is then transported through pipelines to the oxidation reactor. Inside the reactor, the ozone reacts fully with the wastewater to remove pollutants. During system operation, if the ozone generator stops working due to a power outage or equipment failure, there is a risk that the wastewater in the ozone pipeline reactor may flow back into the ozone generator, damaging it.

[0004] To protect ozone generators, current methods primarily involve installing check valves and adding backflow tanks to prevent wastewater backflow. For example, CN205850618U discloses a safety protection scheme using a backflow tank to prevent wastewater backflow. However, this scheme has drawbacks: the storage tank space needs to account for the water volume within the backflow pipe, the backflow water volume from the reaction tank, and a certain safety factor, resulting in a large footprint for the backflow tank. CN217896238U discloses a scheme involving arranging a backflow detection sensor and an electric valve in the ozone generator outlet pipe. When backflow is detected, the electric valve closes to prevent backflow into the ozone generator. However, this scheme may face the risk of electric valve failure in actual operation, as this is a normally open valve. If it fails and cannot close, it will affect the safety performance of protecting the ozone generator. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a device for preventing water backflow into the ozone generator that can safely, quickly and automatically avoid the risk of water flowing back into the ozone generator.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a device for preventing water backflow in an ozone reactor, including an ozone generator and an oxidation reactor. The ozone outlet of the ozone generator is connected to the oxidation reactor through an ozone delivery pipe. A pressure sensor and a first electric valve are arranged sequentially on the ozone delivery pipe after the ozone outlet. A water discharge pipe equipped with a second electric valve is connected to the ozone delivery pipe between the oxidation reactor and the first electric valve. A controller is set up to control the opening and closing of the first electric valve and the second electric valve according to the pressure sensor signal.

[0007] The outlet end of the water discharge pipe is connected to the water storage device to prevent ozone pollution of the environment.

[0008] An ozone concentration detection sensor is connected to the water discharge pipe, and the controller alarms based on the ozone concentration detection sensor signal. When the second electric valve fails to close and some ozone leaks through the water discharge pipe, the ozone concentration detection sensor can issue an alarm signal to promptly shut down the system.

[0009] The beneficial effects of this invention are: it can automatically prevent water backflow in the ozone reactor, and it is safe and fast. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the ozone reactor water backflow prevention device of this utility model.

[0011] The components in the diagram are labeled as follows: 1-Ozone generator, 2-Oxidation reactor, 3-Ozone delivery pipe, 4-Water discharge pipe, 5-Pressure sensor, 6-Ozone concentration detection sensor, 7-First electric valve, 8-Second electric valve, 9-Water storage device, 10-Controller. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] like Figure 1 As shown, the ozone reactor water backflow prevention device of this utility model includes an ozone generator 1 and an oxidation reactor 2. The ozone outlet of the ozone generator 1 is connected to the oxidation reactor 2 through an ozone delivery pipe 3. A pressure sensor 5 and a first electric valve 7 are arranged sequentially on the ozone delivery pipe 3 after the ozone outlet. A water discharge pipe 4, equipped with a second electric valve 8 and an ozone concentration detection sensor 6, is connected to the ozone delivery pipe 3 between the oxidation reactor 2 and the first electric valve 7. The outlet end of the water discharge pipe 4 is connected to a water storage device 9. A controller 10 controls the opening and closing of the first electric valve 7 and the second electric valve 8 according to the signal from the pressure sensor 5.

[0014] When the ozone reaction system experiences a sudden power outage or ozone generator 1 malfunctions, the system produces no ozone / gas. The pressure sensor 5 on the ozone delivery pipe 3 detects the pressure change and transmits the signal to the controller 10. Based on this signal, the controller 10 controls the first electric valve 7 to close quickly and the second electric valve 8 to open quickly. Water returning from the oxidation reactor 4 is discharged through the water discharge pipe 4 to the water storage device 9, preventing backflow into the ozone generator 1. Since the first electric valve 7 is a normally open valve, even if it fails and cannot close, the water discharge pipe 4 is generally installed lower than the outlet of the ozone delivery pipe 3. The returned water will only flow to the water storage device 9 and not into the ozone generator 1, thus not affecting its safety performance in protecting the ozone generator 1. Because this system is often used in wastewater treatment plants, the equalization tank or storage tank of the treatment plant can be directly used as the water storage device 9, eliminating the need for a separate return tank and saving space.

[0015] When the power supply to the ozone reaction system is restored, or the fault of ozone generator 1 is cleared, ozone generator 1 resumes normal ozone production and enters ozone delivery pipe 3. The pressure rises, and after the pressure sensor 5 detects the pressure change, it transmits the signal to the controller 10. The controller 10 controls the first electric valve 7 to open quickly and the second electric valve 8 to close according to the signal. Ozone enters oxidation reactor 2, and the system returns to normal.

[0016] When the second electric valve 8 malfunctions and cannot close properly, some ozone will be discharged into the water storage device 9 through the water discharge pipe 4. The ozone concentration detection sensor 6 can detect the ozone leak, issue an alarm signal, and prompt the machine to stop for handling, so as to avoid pollution or waste of a large amount of ozone leak.

[0017] In summary, when applied to an ozone reaction system, this invention can effectively ensure the safety of the ozone generator.

Claims

1. A device for preventing backflow of water in an ozone reactor, comprising an ozone generator (1) and an oxidation reactor (2), wherein the ozone outlet of the ozone generator (1) is connected to the oxidation reactor (2) via an ozone delivery pipe (3), characterized in that: After the ozone outlet, a pressure sensor (5) and a first electric valve (7) are arranged sequentially on the ozone delivery pipe (3). A water discharge pipe (4) equipped with a second electric valve (8) is connected to the ozone delivery pipe (3) between the oxidation reactor (2) and the first electric valve (7). A controller (10) is set up to control the opening and closing of the first electric valve (7) and the second electric valve (8) according to the signal of the pressure sensor (5).

2. The device for preventing backflow of water in an ozone reactor as described in claim 1, characterized in that: The outlet end of the water discharge pipe (4) is connected to the water storage device (9).

3. The device for preventing backflow of water in an ozone reactor as described in claim 1 or 2, characterized in that: An ozone concentration detection sensor (6) is connected to the water discharge pipe (4), and the controller (10) alarms based on the signal from the ozone concentration detection sensor (6).

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