Automatic ozone adding device

Abstract

The utility model belongs to the technical field of building secondary pressurization and regulation and storage water supply, and particularly relates to an automatic ozone adding device which comprises an ozone adding control cabinet provided with a control circuit. The other end of the control circuit is provided with an ozone generating mechanism, one end of an ozone converging pipe is connected with an air suction port of the jet device, the other end of the ozone converging pipe is simultaneously connected with a residual ozone collecting pipe at the top of the water tank air collecting chamber and an ozone outlet pipe of the ozone generating mechanism, and a water inlet of the jet device is connected with a pressurized water supply branch pipe of water supply equipment. A residual chlorine detector is arranged on one side of the water tank, and an ozone concentration detector is arranged above a gas collection chamber of the water tank. According to the utility model, the problems of low oxygen dissolving efficiency and poor disinfection effect in a traditional positive pressure adding mode are solved, extra electric charge and increase of later maintenance amount caused by independent arrangement of a booster pump in a traditional negative pressure adding mode can be avoided, and particularly, a residual ozone recycling scheme is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of secondary pressurization and storage water supply for buildings, in particular to an automatic ozone dosing device. Background Art

[0002] Since the 1950s, the development of secondary water supply technology for buildings in my country has progressed through several stages: water tower / elevated water tank supply, combined pump-tank supply, pneumatic water supply, variable-frequency speed regulation water supply, network-based pressure supply, and finally, digital integrated full-frequency constant-pressure water supply. With the exception of a few projects that utilize network-based pressure supply, unconstrained by urban pipe diameter and water supply pressure, the vast majority of secondary water supply systems require regulating and storage tanks, where the stored water comes into direct contact with air. This raises the issues of maintaining water quality in the tanks and requiring secondary disinfection of the stored water.

[0003] After nearly three decades of development, although water plants still use chlorine disinfection technology, the disinfection method for secondary water supply in buildings and communities has gradually evolved from chlorine disinfection to a disinfection system dominated by ozone disinfection and ultraviolet disinfection, whose by-products have no impact on water quality and human health. Among them, ozone disinfection is popular among designers and users for its advantages of small footprint and low subsequent maintenance and management.

[0004] The existing technology has the following problems: the existing ozone addition methods usually adopt positive pressure addition method and booster pump + ejector negative pressure addition method; among them, the positive pressure addition method has too low residual pressure of the ozone gas entering the water, resulting in low dissolved oxygen efficiency, and a large amount of residual ozone overflowing the water surface, which will overflow the water tank through the vent pipe and overflow pipe. Secondly, the booster pump + ejector negative pressure addition method requires the addition of a booster pump, which incurs additional electricity costs and increases subsequent maintenance costs during use; the input amount cannot be controlled according to the bacterial content in the water, and the electricity cost of the ozone generator is high. In addition, residual ozone is highly oxidizing and has certain harmful effects on human health. Currently, there is no suitable treatment technology; the process of absorbing and treating residual ozone by connecting an activated carbon adsorption tank and a residual ozone decomposer in series in the pressurized water flow is commonly used in large water plants, large sewage treatment plants, swimming pool circulating water treatment and other occasions. It has a high initial investment and a large amount of subsequent maintenance, and cannot be directly applied to the treatment of residual ozone above the water surface of the regulating water tank. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides an automatic ozone dosing device, which solves the disadvantages of the current traditional ozone dosing method, such as low dissolved oxygen efficiency, high residual ozone content, and high power consumption. It achieves the goals of reducing the amount of subsequent maintenance, reducing power equipment, and realizing on-demand dosing when dosing ozone to reduce the power consumption of ozone preparation. At the same time, it also avoids the problem of residual ozone overflowing in the water causing harm to the pump room environment.

[0006] To achieve the above object, the present utility model provides the following technical solutions: an automatic ozone dosing device, comprising an ozone dosing control cabinet, wherein the ozone dosing control cabinet is provided with a control circuit;

[0007] An ozone generating mechanism is provided at the other end of the control circuit, an ozone merging pipe is provided near the ozone generating mechanism, one end of the ozone merging pipe is fixedly connected to the negative pressure air suction port on the side of the ejector, the water outlet above the ejector is fixedly connected to the ozone dosing pipe, the ozone dosing pipe is provided with an aeration head at the bottom of the water tank, a water supply device is provided on one side of the water tank, the pressurized water supply branch on the water outlet pipe of the water supply device is fixedly connected to the water inlet below the ejector, a gas collecting chamber is provided on the top of the water tank, a residual chlorine online detector is provided near the water tank, a residual chlorine online detector is provided at the lower side of the water tank, an ozone online detector is provided near the water tank, and an ozone online detector is provided at the top of the gas collecting chamber;

[0008] The ozone generating mechanism includes an ozone generator, an ozone outlet pipe, a first control valve and a first check valve. The ozone generator is fixedly connected to the ozone outlet pipe above, and the first control valve and the first check valve are both fixedly installed on the ozone outlet pipe.

[0009] As an optimal technical solution of the present invention, a residual ozone collection pipe is fixedly installed on the top of the gas collecting chamber. The residual ozone collection pipe is connected in parallel with the ozone outlet pipe and then fixedly connected to the ozone confluence pipe. A second check valve is provided on the residual ozone collection pipe.

[0010] As an optimal technical solution of the present invention, the water supply equipment includes a pressurized water supply main pipe, a pressurized water supply branch pipe, a second control valve and a regulating valve. The pressurized water supply main pipe is fixedly connected to the pressurized water supply branch pipe, and the second control valve and the regulating valve are both fixedly installed with the pressurized water supply branch pipe.

[0011] As an optimal technical solution of the present utility model, the residual chlorine online detector and the residual chlorine detector constitute a residual chlorine detection facility, a data transmission line is fixedly connected between the residual chlorine online detector and the residual chlorine detector, the installation height of the residual chlorine detector is lower than the lowest effective water level of the water tank, a data transmission line is fixedly connected between the ozone concentration detector and the ozone online detector, and a data transmission line is fixedly connected between the residual chlorine online detector and the ozone online detector and the ozone dosing control cabinet.

[0012] As an optimal technical solution of the present utility model, the ozone generator adopts an oxygen source, has a built-in cooling box and a rotor flowmeter, and the cooling box adopts artificial water replenishment, and the cooling method is air cooling or water cooling. The ejector is fixedly connected to the ozone outlet pipe, and a control circuit is fixedly connected between the ozone generator and the ozone dosing control cabinet.

[0013] As a preferred technical solution of the present invention, the gas collecting chamber is made of the same material as the water tank and the internal spaces thereof are connected.

[0014] As a preferred technical solution of the present invention, the aeration head is provided at the end of the ozone dosing pipe and is preferably arranged in the center of the bottom of the water tank.

[0015] Compared with the existing technology, this utility model provides an automatic ozone dosing device with the following features:

[0016] Beneficial effects:

[0017] This automatic ozone dosing device can automatically start the ozone generator to actively add ozone disinfectant according to the amount of residual chlorine in the water. It can also automatically shut down the ozone generator when the ozone concentration above the water surface of the water tank reaches the design threshold, and automatically inject the residual ozone overflowing from the water surface of the water tank into the water. This dosing method has high air dissolution efficiency, simple system structure, low subsequent maintenance, and no need to add power equipment. It can combine ozone dosing and residual ozone recovery and utilization functions. It not only solves the problems of low dissolved oxygen efficiency and poor disinfection effect under the traditional positive pressure dosing method, but also avoids the need to set up a separate booster pump under the traditional negative pressure dosing method to generate additional electricity costs and increase subsequent maintenance. When dosing ozone, it can also achieve on-demand dosing to reduce the power consumption of ozone preparation. In particular, it eliminates the harm caused by residual ozone overflowing in the water to the pump room environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall operation process of an automatic ozone dosing device of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the residual chlorine online detector and the dosing control cabinet of an automatic ozone dosing device of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between an ozone online detector and a dosing control cabinet of an ozone automatic dosing device of the utility model.

[0021] In the figure: 1. Ozone dosing control cabinet; 2. Control circuit; 3. Ozone generating mechanism; 31. Ozone generator; 32. Ozone outlet pipe; 33. First control valve; 34. First check valve; 4. Ozone junction pipe; 5. Ejector; 51. Negative pressure suction port; 52. Water inlet; 53. Water outlet; 6. Ozone dosing pipe; 7. Aeration head; 8. Water tank; 81. Gas collecting chamber; 82. Residual ozone collection pipe; 83. Second check valve; 9. Water supply equipment; 91. Pressurized water supply main pipe; 92. Pressurized water supply branch pipe; 93. Second control valve; 94. Regulating valve; 10. Residual chlorine online detector; 101. Residual chlorine detector; 11. Ozone online detector; 111. Ozone concentration detector. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-3 , In this embodiment: an ozone automatic dosing device, comprising an ozone dosing control cabinet 1, the ozone dosing control cabinet 1 is provided with a control circuit 2;

[0024] An ozone generating mechanism 3 is provided at the other end of the control circuit 2, and an ozone confluence pipe 4 is provided near the ozone generating mechanism 3. One end of the ozone confluence pipe 4 is fixedly connected to the negative pressure air intake port 51 on the side of the ejector 5, and the water outlet 53 above the ejector 5 is fixedly connected to the ozone dosing pipe 6. The ozone dosing pipe 6 is provided with an aeration head 7 at the bottom of the water tank, and a water supply device 9 is provided on one side of the water tank 8. The pressurized water supply branch pipe 92 on the outlet pipe of the water supply device 9 is fixedly connected to the water inlet 52 below the ejector 5. A gas collecting chamber 81 is provided on the top of the water tank 8, and a residual chlorine online detector 10 is provided near the water tank 8. The residual chlorine online detector 10 is provided with a residual chlorine detector 101 at the lower side of the water tank 8. An ozone online detector 11 is provided near the water tank 8, and the ozone online detector 11 is provided with an ozone concentration detector 111 at the top of the gas collecting chamber 81;

[0025] The ozone generating mechanism 3 includes an ozone generator 31 , an ozone outlet pipe 32 , a first control valve 33 and a first check valve 34 . The ozone outlet pipe 32 is fixedly connected to the top of the ozone generator 31 . The first control valve 33 and the first check valve 34 are both fixedly installed to the ozone outlet pipe 32 .

[0026] See also Figure 1In this embodiment, a residual ozone collection pipe 82 is fixedly installed on the top of the gas collecting chamber 81. The residual ozone collection pipe 82 is connected in parallel with the ozone outlet pipe 32 and then fixedly connected to the ozone confluence pipe 4. A second check valve 83 is provided on the residual ozone collection pipe 82.

[0027] In the above embodiment, the residual ozone generated after the inside of the water tank 8 is disinfected by the ozone disinfectant can be collected through the gas collecting chamber 81, and the residual ozone concentration inside the gas collecting chamber 81 can be detected under the action of the ozone concentration detector 82 and the detection data can be transmitted to the ozone online detector 11 and at the same time transmitted to the ozone dosing control cabinet 1.

[0028] Specifically, a detection circuit is fixedly connected between the ozone concentration detector 82 and the ozone online detector 11, the residual ozone collection pipe 82 is fixedly connected to the ozone outlet pipe 32, and the residual ozone collection pipe 83 and the ozone outlet pipe 32 are respectively provided with a second check valve and a first check valve to prevent mutual interference when adding ozone or residual ozone.

[0029] Since the residual ozone collection pipe 82 is connected to the ozone confluence pipe 4, and the ozone confluence pipe 4 is connected to the negative pressure air intake port 51 of the ejector 5, and the ejector 5 is connected to the ozone dosing pipe 6, the residual ozone inside the gas collection chamber 81 can be sucked into the ejector 5 for secondary use when the ozone generator 11 stops working.

[0030] See also Figure 1 In this embodiment, the water supply equipment 9 includes a pressurized water supply main pipe 91, a pressurized water supply branch pipe 92, a second control valve 93 and a regulating valve 94. The pressurized water supply main pipe 91 is fixedly connected to the pressurized water supply branch pipe 92, and the second control valve 93 and the regulating valve 94 are both fixedly installed with the pressurized water supply branch pipe 92.

[0031] In the above embodiment, the water inside the water tank 8 can be pressurized for the second time by the water supply equipment 9 and then sent to the pressurized water supply main pipe 91, and the pressurized water supply main pipe 91 can send part of the pressurized water to the ejector 5. The passage of the pressurized water causes the ejector 5 to generate negative pressure, thereby sucking ozone into the ejector 5 and sending the water-gas mixed liquid into the ozone dosing pipe 6.

[0032] Furthermore, the end of the pressurized water supply branch pipe 92 is fixedly connected to the water inlet 52 below the ejector 5 , and the water outlet 53 of the ejector 5 is fixedly connected to the ozone dosing pipe 6 .

[0033] Under the action of the second control valve 93 and the regulating valve 94 set between the ejector 5 and the pressurized water supply branch pipe 92, the second control valve 93 is in a normally open state when the device is in use, and can be temporarily closed when pipeline maintenance is required. The regulating valve 94 adopts a manual pressure regulating valve 94, which can be manually adjusted on site when the suction pressure of the ejector 5 needs to be adjusted.

[0034] See also Figure 1 In this embodiment, the ozone generator 31 uses an oxygen source, has a built-in cooling box and a rotor flowmeter, and the cooling box uses artificial water replenishment. The cooling method is air cooling or water cooling. A control line 2 is fixedly connected between the ozone generator 31 and the ozone dosing control cabinet 1.

[0035] In the above embodiment, the ozone dosing control cabinet 1 can start and shut down the ozone generator 31 through the control circuit 2, and the amount of ozone generated is determined by the effective water volume of the water tank 8. The dosing standard can be 1g / m 3 *h; adopts floor-standing type, with human-machine display and control interface; at the same time, ozone generator 31 is set outside the control room of the pump room.

[0036] It is additionally noted that the residual chlorine online detector 10 and the residual chlorine detector 101 constitute a residual chlorine detection facility. The installation height of the residual chlorine detector 101 is lower than the lowest effective water level of the water tank 8. A data transmission line is fixedly connected between the residual chlorine online detector 10 and the ozone online detector 11 and the ozone dosing control cabinet 1. The gas collecting chamber 81 is made of the same material as the water tank 8 and the internal space is connected. The aeration head 7 is provided at the end of the ozone dosing pipe 6 and should be arranged in the center of the bottom of the water tank 8.

[0037] It should be noted that the residual chlorine concentration of the replenished water flowing into the water tank 8 is inversely proportional to the bacterial content. The on / off operating state of the ozone generator 31 in this device anchors the residual chlorine concentration in the water, which is equivalent to anchoring the sterilization rate. Furthermore, the online residual chlorine detector 10 and the online ozone detector 11 can be installed independently or within the ozone dosing control cabinet 1.

[0038] The working principle and usage process of the present invention are as follows: the operator controls the ozone generator 31 through the ozone dosing control cabinet 1 to generate ozone and enter the inside of the ozone outlet pipe 32, and the ozone is sent to the ozone junction pipe 4 and then to the ejector 5 through the ozone outlet pipe 32. At the same time, the water supply equipment 9 is started to extract the water in the water tank 8 and pressurize it and then send it to the pressurized water supply main pipe 91. The pressurized water enters the pressurized water supply branch pipe 92 through the pressurized water supply main pipe 91, and the end of the pressurized water supply branch pipe 92 is connected to the water inlet 52 of the ejector 5. Therefore, the negative pressure suction force generated by the pressurized water flowing through the ejector 5 enables the ozone to have the power to flow into the ozone dosing pipe 6 and be sent to the inside of the water tank 8 through the aeration head 7; and the ozone dosing device is automatically controlled and operated by the ozone dosing control cabinet 1 according to the residual chlorine concentration in the water and the residual ozone gas concentration in the gas collecting chamber 81. The normal delivery of ozone disinfectant is controlled by the residual chlorine concentration in the stored water. When the residual chlorine concentration in the water drops to a set lower threshold (e.g., 0.06-0.07 mg / L), the ozone generator 31 automatically turns on. When the residual chlorine concentration in the water reaches a set upper threshold (e.g., 0.08-0.1 mg / L), the ozone generator 31 automatically turns off. When the ozone concentration in the air in the plenum 81 reaches a set upper threshold (e.g., 0.5-0.9 mg / L), the ozone generator 31 automatically turns off. When the ozone concentration in the air in the plenum 81 drops to a set lower threshold (e.g., 0.05-0.1 mg / L), the ozone generator 31 automatically turns on. In the event of conflicting signals for turning the ozone generator 31 on and off, the ozone concentration signal takes precedence. This allows for automatic ozone dosing and residual ozone recovery and reuse.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An automatic ozone dosing device, comprising an ozone dosing control cabinet (1), wherein the ozone dosing control cabinet (1) is provided with a control circuit (2), characterized in that: The other end of the control circuit (2) is provided with an ozone generating mechanism (3), and an ozone converging pipe (4) is provided near the ozone generating mechanism (3). One end of the ozone converging pipe (4) is fixedly connected to the negative pressure air inlet (51) on the side of the ejector (5), and the water outlet (53) above the ejector (5) is fixedly connected to the ozone dosing pipe (6). The ozone dosing pipe (6) is provided with an aeration head (7) at the bottom of the water tank (8). A water supply device (9) is provided on one side of the water tank (8), and the water outlet pipe of the water supply device (9) is connected to the ozone dosing pipe (6). The pressurized water supply branch pipe (92) on the road is fixedly connected to the water inlet (52) below the ejector (5); a gas collecting chamber (81) is provided on the top of the water tank (8); a residual chlorine online detector (10) is provided near the water tank (8); a residual chlorine detector (101) is provided on the lower side of the water tank (8); an ozone online detector (11) is provided near the water tank (8); an ozone concentration detector (111) is provided on the top of the gas collecting chamber (81); The ozone generating mechanism (3) comprises an ozone generator (31), an ozone outlet pipe (32), a first control valve (33) and a first check valve (34); the ozone outlet pipe (32) is fixedly connected above the ozone generator (31); and the first control valve (33) and the first check valve (34) are both fixedly mounted on the ozone outlet pipe (32).

2. An automatic ozone dosing device according to claim 1, characterized in that: A residual ozone collecting pipe (82) is fixedly installed on the top of the gas collecting chamber (81). The residual ozone collecting pipe (82) is connected in parallel with the ozone outlet pipe (32) and then fixedly connected to the ozone converging pipe (4). A second check valve (83) is provided on the residual ozone collecting pipe (82).

3. An automatic ozone dosing device according to claim 1, characterized in that: The water supply equipment (9) comprises a pressurized water supply main pipe (91), a pressurized water supply branch pipe (92), a second control valve (93) and a regulating valve (94); the pressurized water supply main pipe (91) is fixedly connected to the pressurized water supply branch pipe (92); the second control valve (93) and the regulating valve (94) are both fixedly installed on the pressurized water supply branch pipe (92).

4. An automatic ozone dosing device according to claim 1, characterized in that: The residual chlorine online detector (10) and the residual chlorine detector (101) constitute a residual chlorine detection facility. A data transmission line is fixedly connected between the residual chlorine online detector (10) and the residual chlorine detector (101). The installation height of the residual chlorine detector (101) is lower than the lowest effective water level of the water tank (8). A data transmission line is fixedly connected between the ozone concentration detector (111) and the ozone online detector (11). A data transmission line is fixedly connected between the residual chlorine online detector (10) and the ozone online detector (11) and the ozone dosing control cabinet (1).

5. An automatic ozone dosing device according to claim 1, characterized in that: The ozone generator (31) uses an oxygen source, has a built-in cooling box and a rotor flowmeter, and the cooling box uses artificial water replenishment, and the cooling method is air cooling or water cooling. A control circuit (2) is fixedly connected between the ozone generator (31) and the ozone dosing control cabinet (1).

6. An automatic ozone dosing device according to claim 1, characterized in that: The gas collecting chamber (81) is made of the same material as the water tank (8) and the internal spaces thereof are communicated.

7. An automatic ozone dosing device according to claim 1, characterized in that: The aeration head (7) is arranged at the end of the ozone dosing pipe (6) and is preferably arranged in the center of the bottom of the water tank (8).

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