Anti-backflow device for ozone addition

Abstract

The utility model discloses an ozone adding anti-backflow device, which belongs to the technical field of water treatment and comprises a tank body, an ozone inlet and an ozone outlet are arranged at the upper end of the tank body, a water outlet pipe is mounted at the lower end of the tank body, a plugging component is mounted at one end, connected with the tank body, of the water outlet pipe, and a floating component is arranged in the tank body. The blocking assembly comprises a limiting ring and a magnetic ball, the limiting ring is installed at the end, close to the tank body, of the water outlet pipe, a baffle is installed on the inner wall of the water outlet pipe and located on the side, away from the tank body, of the limiting ring, the magnetic ball is placed on the baffle and the floating assembly, a cavity is formed in the floating assembly, and the magnetic ball is arranged in the cavity. According to the sewage treatment device, backflow of treated water can be effectively avoided, and the sewage treatment device is simple in structure and low in later maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to an ozone dosing backflow prevention device. Background Art

[0002] In the process of water treatment, in order to fully blend ozone with water, ozone is usually introduced into the dissolved gas device, and the ejector inside the dissolved gas device blends the treated water with ozone;

[0003] The ejector is through the Venturi effect, that is, the liquid is ejected from the nozzle at a high speed. When the flowing liquid passes through the negative pressure chamber, a vacuum negative pressure is formed in the negative pressure chamber, and the gas is sucked in from the inlet. After the gas enters the negative pressure chamber, it mixes with the liquid at the throat and is discharged from the diffuser.

[0004] When the jet pump stops working or the jet frequency decreases, the ejector cannot form negative pressure suction due to insufficient pressure, and the treated water will flow back through the ozone ventilation pipe. Since ozone is extremely easy to decompose, it is usually produced on-site. The treated water flowing back through the ozone ventilation pipe flows into the ozone generator, causing great damage to the ozone generator.

[0005] The existing backflow prevention method is usually to install a check valve in the pipeline to prevent gas or liquid from flowing back. However, ozone is usually produced on-site, and the output pressure is relatively low, which cannot reach the working pressure of the check valve. The existing backflow prevention tank usually detects the liquid level in the tank through the combination of sensors and solenoid valves to achieve automatic drainage. Since ozone water is corrosive, the sensors and solenoid valves installed in the tank are easily damaged if they are in contact with ozone for a long time, which makes the subsequent maintenance cost high. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides an ozone dosing anti-backflow device, which can effectively prevent the backflow of treated water and has a simple structure and low later maintenance cost.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: an ozone dosing anti-backflow device comprises a tank body, an ozone inlet and an ozone outlet are arranged at the upper end of the tank body, a water outlet pipe is installed at the lower end of the tank body, a plugging component is installed at one end of the water outlet pipe connected to the tank body, and a floating component is placed inside the tank body;

[0008] The plugging assembly includes a limiting ring and a magnetic ball, wherein the limiting ring is installed at one end of the water outlet pipe close to the tank body, a baffle is installed on the inner wall of the water outlet pipe, and the baffle is located on the side of the limiting ring away from the tank body, and the magnetic ball is placed between the baffle and the limiting ring, and the inner diameter of the limiting ring is smaller than the diameter of the magnetic ball;

[0009] A cavity is provided inside the floating component, and a plurality of magnets are installed on the inner side wall of the cavity. The magnets can make the magnetic ball in the water outlet pipe abut against the limiting ring.

[0010] Preferably, a truncated cone-shaped slope is provided on the inner wall of the limiting ring, the diameter of one end of the slope close to the tank body is smaller than the diameter of the magnetic ball, and the diameter of the other end of the slope is the same as the inner wall of the water outlet pipe.

[0011] Preferably, the outer surface of the magnetic ball is provided with a corrosion-resistant coating.

[0012] Preferably, the floating assembly comprises an arc-shaped cover and a mounting plate, and the upper end surface of the mounting plate is connected to the lower end surface of the arc-shaped cover via threads.

[0013] Preferably, a plurality of mounting grooves evenly arranged in the circumferential direction are provided on the inner side wall of the mounting plate, the mounting grooves are the same shape as the magnets, and the magnets are plugged into the mounting grooves.

[0014] Preferably, the arc-shaped cover and the mounting plate are both made of plastic.

[0015] Preferably, a silicone sealing ring is installed at the connection between the arc-shaped cover and the mounting plate.

[0016] Preferably, the baffle is provided with a plurality of through holes.

[0017] Preferably, the baffle and the limiting ring are both detachably mounted on the inner wall of the water outlet pipe.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1. The utility model installs a magnet inside the floating component and a plugging component at the end of the water outlet pipe. When the device is normally ozone-passing, the floating component falls to the bottom of the tank due to its own gravity, and the magnet inside the floating component attracts the magnetic ball to the slope to achieve plugging of the water outlet pipe to prevent ozone overflow. When a certain amount of treated water flows into the tank, the floating plate gradually floats up, and the magnetic ball rolls down the water outlet pipe along the slope, releasing the plugging and draining the water in the tank. Automatic drainage of the device is achieved, and malfunction will not occur due to ozone corrosion, and the simple structure reduces the later maintenance cost.

[0020] 2. The utility model provides a truncated cone-shaped slope on the limit ring. The end with a smaller diameter of the slope can cooperate with the magnetic ball to achieve the blocking of the water outlet pipe. The slope can also float on the floating plate to make the magnetic ball roll down to the baffle, so that the water flow can be discharged from the tank smoothly.

[0021] 3. The floating assembly of the utility model is connected by an arc cover and a mounting plate, which is convenient for installing and replacing the magnet inside the floating assembly. At the same time, the arc cover can also drain the treated water returning from the ozone outlet to the bottom of the tank, providing buoyancy for the floating assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a cross-sectional view of an ozone dosing backflow prevention device of the utility model;

[0023] Figure 2 It is a partial enlarged view of a blocking component of an ozone dosing backflow prevention device of the utility model.

[0024] In the figure: 1-floating assembly, 2-tank body, 3-ozone inlet, 4-ozone outlet, 5-arc cover, 6-mounting plate, 7-water outlet pipe, 8-baffle, 9-through hole, 10-magnetic ball, 11-slope, 12-limiting ring, 13-magnet, 14-silicone sealing ring, 15-mounting groove. DETAILED DESCRIPTION

[0025] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-2 The ozone dosing anti-backflow device shown in the figure comprises a tank body 2, an ozone inlet 3 and an ozone outlet 4 are arranged at the upper end of the tank body 2, the ozone produced by the ozone generator enters the tank body 2 through the ozone inlet 3, and the ozone gas entering the tank body 2 is then sucked away from the ozone outlet 4 by the negative pressure generated by the ejector;

[0027] The utility model is provided with a water outlet pipe 7 at the lower end of the tank body 2, and a plugging assembly is installed at one end of the water outlet pipe 7 connected to the tank body 2. A floating assembly 1 is placed inside the tank body 2. The plugging assembly includes a limit ring 12 and a magnetic ball 10. The outer surface of the magnetic ball 10 is provided with a corrosion-resistant coating to avoid long-term contact with the treated water and corrosion by the ozone dissolved therein, thereby extending the service life of the magnetic ball 10.

[0028] Specifically, a limiting ring 12 is installed at one end of the water outlet pipe 7 close to the tank body 2, a baffle 8 is installed on the inner wall of the water outlet pipe 7, a plurality of through holes 9 are provided on the baffle 8, the baffle 8 is located on the side of the limiting ring 12 away from the tank body 2, the baffle 8 and the limiting ring 12 are both detachably installed on the inner wall of the water outlet pipe 7, the magnetic ball 10 is placed between the baffle 8 and the limiting ring 12, a truncated cone-shaped slope 11 is provided on the inner wall of the limiting ring 12, the diameter of one end of the slope 11 close to the tank body 2 is smaller than the diameter of the magnetic ball 10, and the diameter of the other end of the slope 11 is the same as the inner wall of the water outlet pipe 7, the limiting ring 12 and the baffle 8 limit the magnetic ball 10, and can also make the treated water that flows back into the tank body 2 be smoothly discharged from the water outlet pipe 7;

[0029] Specifically, the floating assembly 1 includes an arc cover 5 and a mounting plate 6. The arc cover 5 and the mounting plate 6 are both made of plastic material, do not react with ozone, have good corrosion resistance in an environment with high ozone concentration, and the density of the material itself is smaller than that of water, which can generate greater buoyancy. The upper end surface of the mounting plate 6 is connected to the lower end surface of the arc cover 5 by threads, which is convenient for disassembly and installation of internal parts. A silicone seal ring 14 is installed at the connection between the arc cover 5 and the mounting plate 6. The silicone material has a strong deformation ability and can achieve a good sealing effect. At the same time, it also has a high corrosion resistance in an ozone environment, which greatly extends the service life of the floating assembly 1.

[0030] The utility model has a plurality of mounting grooves 15 evenly arranged in the circumferential direction on the inner side wall of the mounting plate 6, and a magnet 13 is inserted into the mounting groove 15. The plurality of magnets 13 are equidistantly mounted inside the floating assembly 1, which can effectively avoid being corroded by ozone. Even if the floating plate rotates, the magnet 13 closest to the outlet pipe 7 during descent can also attract the magnetic ball 10, so that it abuts against the limit ring 12.

[0031] Specifically, when the device is passing ozone normally, the floating component 1 falls to the bottom of the tank body 2 due to its own gravity, and the magnet 13 in the floating component 1 attracts the magnetic ball 10 on the blocking component, rises along the slope 11, and finally rests on the end of the slope 11 with a smaller diameter, thereby blocking the outlet pipe 7 and preventing ozone from overflowing from the outlet pipe 7. When a certain amount of treated water flows into the tank, the floating plate gradually moves upward due to buoyancy, and the suction force of the magnet 13 on the magnetic ball 10 becomes smaller. At this time, the magnetic ball 10 rolls down along the slope 11, unblocking the outlet pipe 7, and the water in the tank body 2 is smoothly discharged from the outlet pipe 7, realizing automatic drainage of the device, with a simple structure and convenient maintenance, which reduces the subsequent maintenance cost.

[0032] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. An ozone dosing anti-backflow device, characterized in that: It comprises a tank body, wherein an ozone inlet and an ozone outlet are arranged at the upper end of the tank body, a water outlet pipe is installed at the lower end of the tank body, a plugging component is installed at one end of the water outlet pipe connected to the tank body, and a floating component is placed inside the tank body; The plugging assembly includes a limiting ring and a magnetic ball, wherein the limiting ring is installed at one end of the water outlet pipe close to the tank body, a baffle is installed on the inner wall of the water outlet pipe, and the baffle is located on the side of the limiting ring away from the tank body, and the magnetic ball is placed between the baffle and the limiting ring, and the inner diameter of the limiting ring is smaller than the diameter of the magnetic ball; A cavity is provided inside the floating component, and a plurality of magnets are installed on the inner side wall of the cavity. The magnets can make the magnetic ball in the water outlet pipe abut against the limiting ring.

2. The ozone dosing anti-backflow device according to claim 1, characterized in that: A truncated cone-shaped slope is provided on the inner wall of the limiting ring. The diameter of one end of the slope close to the tank body is smaller than the diameter of the magnetic ball, and the diameter of the other end of the slope is the same as the inner wall of the water outlet pipe.

3. The ozone dosing anti-backflow device according to claim 1, characterized in that: The outer surface of the magnetic ball is provided with a corrosion-resistant coating.

4. The ozone dosing anti-backflow device according to claim 1, characterized in that: The floating assembly comprises an arc-shaped cover and a mounting plate, and the upper end surface of the mounting plate is connected to the lower end surface of the arc-shaped cover through threads.

5. The ozone dosing anti-backflow device according to claim 4, characterized in that: The inner side wall of the mounting plate is provided with a plurality of mounting grooves which are evenly arranged in the circumferential direction. The mounting grooves have the same shape as the magnets, and the magnets are plugged into the mounting grooves.

6. The ozone dosing anti-backflow device according to claim 4, characterized in that: The arc-shaped cover and the mounting plate are both made of plastic.

7. The ozone dosing anti-backflow device according to claim 4, characterized in that: A silicone sealing ring is installed at the connection between the arc-shaped cover and the mounting plate.

8. The ozone dosing anti-backflow device according to claim 1, characterized in that: The baffle is provided with a plurality of through holes.

9. The ozone dosing anti-backflow device according to claim 1, characterized in that: The baffle plate and the limiting ring can be detachably mounted on the inner wall of the water outlet pipe.

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