H2O2 and water uniform mixing device for photocatalysis equipment

Abstract

The utility model relates to a H2O2 and water uniform mixing device for photocatalysis equipment, which comprises a photocatalytic degradation reactor and a submersible pump stirring system arranged in the photocatalytic degradation reactor, the submersible pump stirring system comprises a stirring tank, a stirring rod, a suction nozzle, a suction pipe and a sucking pump, and the top of the stirring tank is provided with an opening; one end of the stirring rod is rotationally connected with the bottom of the stirring tank; the suction nozzle is arranged on the stirring rod; the suction pipe is arranged in the stirring rod, and one end of the suction pipe is communicated with the suction nozzle; the sucking pump is communicated with the other end of the suction pipe; the utility model has the advantages that the air extracting pump, the suction pipe, the floating block and the suction nozzle are matched with one another, so that bubbles formed on the surface layer of a water body in the stirring process can be sucked away, obstacles in an ultraviolet irradiation path are reduced, and the problem that the photocatalytic efficiency is influenced by the bubbles on the water body is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of water treatment, and relates to a device for uniformly mixing H2O2 and water for a photocatalytic device. Background Art

[0002] Algal blooms or red tides refer to the phenomenon of excessive reproduction of algae after the water body presents a eutrophic state due to excessive nutrients such as nitrogen and phosphorus. Common algal bloom or red tide control technologies include physical methods, chemical methods, biological methods, etc. Among them, the UV / H2O2 process is a typical photocatalytic degradation process. In this process, hydrogen peroxide molecules absorb light energy and undergo energy level transitions under the radiation of an ultraviolet light source, and the O-O bond in the hydrogen peroxide molecules breaks to decompose into two hydroxyl radical molecules. Subsequently, the hydroxyl radicals interact with organic substances and decompose the organic substances. H2O2 can enter the interior of algal cells, can quickly and effectively inhibit the growth of algae, has little impact on other aquatic plants and animals, and has a low risk of secondary pollution, and is an environmentally friendly algal inhibitor.

[0003] A device for removing algal toxins in water by high-intensity ultraviolet light-hydrogen peroxide disclosed in the existing document with the publication number of CN109896583A includes a fiber filtration system, a photocatalytic degradation reactor, a dosing system, and a high-intensity ultraviolet light system; the fiber filtration system is connected to the photocatalytic degradation reactor through a water inlet pipe, and is used for intercepting, adsorbing, and filtering suspended particles in the raw water, and making the filtered water enter the photocatalytic degradation reactor through the water inlet pipe; the dosing system is connected to the photocatalytic degradation reactor, and is used for dosing hydrogen peroxide into the photocatalytic degradation reactor to carry out a catalytic oxidation reaction with the filtered water; the high-intensity ultraviolet light system is arranged above the photocatalytic degradation reactor, and is used for generating high-intensity ultraviolet light to irradiate the filtered water in the photocatalytic degradation reactor, so as to completely oxidize and degrade the algal toxins in the catalytic oxidation reaction and reduce the toxicity of the algal toxins.

[0004] The above device is provided with a submersible pump stirring system in the photocatalytic degradation reactor to uniformly stir the mixture of the filtered water and hydrogen peroxide solution. However, when the hydrogen peroxide solution and the filtered water are stirred and mixed by the stirring system, bubbles will be generated due to the agitation of the water body during the mixing of hydrogen peroxide and water, and since the density of the bubbles is lower than that of water, they will float to the water surface; when ultraviolet irradiation is carried out, the surface of the bubbles will reflect ultraviolet light, reducing the penetration depth of ultraviolet light; at the same time, ultraviolet light will be scattered when passing through the bubbles, changing its propagation direction and reducing the energy effectively irradiated into the water body. In addition, the bubbles form a barrier on the water surface, blocking some areas, so that these areas cannot receive sufficient ultraviolet irradiation, thus affecting the progress of the photocatalytic reaction; moreover, due to the presence of the bubbles, the propagation path of ultraviolet light in the water body becomes longer, and the ultraviolet light intensity decays with the increase of distance, resulting in a decrease in the ultraviolet irradiation intensity in the deep water layer and affecting the photocatalytic degradation effect of algal toxins in the deep water layer. Summary of the Invention

[0005] The object of the present utility model is to solve the above problems existing in the prior art, and to provide a device for uniformly mixing H2O2 and water for a photocatalytic device.

[0006] To achieve the above object, the technical solution adopted by the present utility model is:

[0007] A device for uniformly mixing H2O2 and water for a photocatalytic device, including a photocatalytic device, the photocatalytic device includes a photocatalytic degradation reactor and a submersible pump stirring system disposed in the photocatalytic degradation reactor, and the submersible pump stirring system includes:

[0008] A stirring tank, the top of the stirring tank is provided with an opening;

[0009] A stirring rod, one end of the stirring rod is rotatably connected to the bottom of the stirring tank;

[0010] A suction nozzle, the suction nozzle is disposed on the stirring rod;

[0011] A suction pipe, the suction pipe is disposed inside the stirring rod, and one end thereof is in communication with the suction nozzle;

[0012] An air extraction pump, the air extraction pump is connected to the other end of the suction pipe.

[0013] Preferably, the stirring rod is of a hollow structure.

[0014] Preferably, a floating block is disposed inside the stirring rod, and the suction nozzle is disposed on the floating block.

[0015] Preferably, a sliding groove is further disposed on the stirring rod, and the suction nozzle moves on the sliding groove.

[0016] Preferably, a plurality of through holes are disposed on the stirring rod.

[0017] Preferably, a ball valve is disposed inside the floating block, one end of the ball valve is connected to a spring, wherein the spring is connected to the floating block, and the other end of the ball valve is disposed in cooperation with the suction nozzle.

[0018] Preferably, the floating block is provided with a horizontally disposed sliding rail, and the ball valve is slidably connected to the sliding rail, wherein the sliding groove provides positioning and guiding functions for the movement of the ball valve.

[0019] Preferably, the diameter of the ball valve is larger than the diameter of one end of the suction nozzle.

[0020] Preferably, the floating block and the suction nozzle can slide up and down inside the stirring rod under the action of water buoyancy.

[0021] Due to the adoption of the above technical solution, the beneficial effects obtained by the present utility model include:

[0022] Through the mutual cooperation among the air extraction pump, the suction pipe, the floating block and the suction nozzle, the present utility model can suck away the bubbles formed on the water surface during the stirring process, reduce the obstacles in the ultraviolet irradiation path, and avoid the problem of affecting the photocatalytic efficiency due to the generation of bubbles on the water body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural view of a device for removing algal toxins in water by high-strength ultraviolet light-hydrogen peroxide in the prior art.

[0024] Figure 2 is a schematic structural view of an embodiment of the H2O2 and water uniform mixing device for a photocatalytic device of the present utility model.

[0025] Figure 3 is a schematic structural view of an embodiment of the stirring rod, the suction nozzle and the suction pipe of the present utility model.

[0026] Figure 4 is Figure 2 an enlarged view of an embodiment at position A in

[0027] Figure 5 is a schematic structural view of an embodiment of the suction pipe and the air extraction pump of the present utility model.

[0028] The reference numerals are as follows:

[0029] 1, submersible pump stirring system; 11, stirring tank; 111, opening; 112, chute;

[0030] 12, stirring rod; 121, through hole; 13, suction nozzle; 14, suction pipe; 15, air extraction pump;

[0031] 16, floating block; 17, ball valve; 18, slide rail; 19, spring; 20, rotating shaft; 21; hollow hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to more clearly show the technical content of the present utility model, it is further described below in conjunction with specific embodiments.

[0033] As Figure 1 shown, the present utility model proposes an H2O2 and water uniform mixing device for a photocatalytic device, including a photocatalytic device (the specific structure can refer to the patent document of CN109896583A), wherein the photocatalytic device includes a photocatalytic degradation reactor and a submersible pump stirring system arranged in the photocatalytic degradation reactor.

[0034] As Figure 2As shown in the figure, the submersible pump stirring system 1 includes a stirring tank 11, a stirring rod 12, a suction nozzle 13, a suction pipe 14, and a suction pump 15. Among them, an opening 111 is provided at the top of the stirring tank 11, and this opening 111 is used to place the water mixed solution that needs to be catalyzed; a stirring rod 12 for stirring the water mixed solution is also provided in the stirring tank 11. One end of the stirring rod 12 is rotatably connected to the bottom of the stirring tank 11, and the other end is connected to an external rotating device (such as a rotating motor, not shown in the figure for simplicity). When the external rotating device is turned on, the stirring rod 12 can rotate in the stirring tank 11, thereby improving the reaction efficiency of the solution in the stirring tank.

[0035] As Figure 3 shown in the figure, the stirring rod 12 is a hollow structure, and a plurality of through holes 121 are also provided on the stirring rod 12. Among them, a floating block 16 is provided inside the stirring rod 12, and the floating block 16 can slide up and down inside the stirring rod 12 using the height of the liquid level; a suction nozzle 13 is connected to the floating block 16, and this suction nozzle 13 is provided on the stirring rod 12. One end of the suction nozzle 13 extends out of the stirring rod. A sliding groove 112 for the suction nozzle to slide is also provided on the stirring rod 12. And under a certain pressure, the floating block 16 can drive the suction nozzle to move up and down on the sliding groove 112. Specifically: The water in the stirring tank 11 can flow into the hollow stirring rod 12 through the through holes 121 and the sliding groove 112, and the water inside the stirring rod 12 makes the floating block 16 float on the water surface; Then, according to the principle of the communicating vessel, the height of the liquid level inside the stirring rod 12 is the same as the height of the liquid level outside the stirring rod 12. Therefore, the suction nozzle 13 can use this principle to semi-float on the water surface, and during this process, the suction nozzle 13 can adopt a horn-shaped structure, so as to facilitate the full attraction of the bubbles on the water surface.

[0036] As Figure 4 shown in the figure, in this embodiment, a ball valve 17 is also provided inside the floating block 16. Among them, a horizontally arranged sliding rail 18 is also provided on the floating block 16, and the ball valve 17 is slidably connected to the sliding rail 18. This sliding rail 17 provides positioning and guiding functions for the movement of the ball valve 18, avoiding the dislocation of the movement of the ball valve 17; A spring 19 is also connected to the ball valve 17, and the other end of this spring 19 is fixedly connected to the floating block 16, and the diameter of the ball valve 17 is not less than the diameter of one end of the suction nozzle 13, so that the ball valve 17 can completely block one end of the suction nozzle 13, thereby cutting off the passage between the suction pump 15 and the suction nozzle 13.

[0037] As Figure 5As shown, in this example, a straw 14 is also provided inside the stirring rod 12. One end of the straw 14 is in communication with the suction nozzle 13, and the other end is connected to the air extraction pump 15 through the rotating shaft 20. The rotating shaft 20 is fixed inside the stirring rod and is rotatably connected to the stirring rod. A hollow hole 21 is provided in the middle of the rotating shaft 20, and the straw 14 can be in communication with the air extraction pump 15 through the hollow hole 21 on the rotating shaft; the setting of the rotating shaft 19 enables the straw to rotate with the stirring rod during the stirring process, and the part connected to the bottom air extraction pump is not affected by the rotation of the stirring rod, so as to successfully complete the attraction and transportation of the bubbles on the water surface; among them, the straw 14 in this device is a flexible tube and has a certain toughness, so it can float and slide with the floating block 16 to meet the use during the process; during the process, the floating block 16 floats on the water layer, so as to drive the suction nozzle 13 to float on the surface layer of the water body. The suction nozzle 13 is connected to the air extraction pump 15 through a straw. After the stirring rod is started, the filtered water and hydrogen peroxide are stirred and mixed. After stirring for a period of time, bubbles will appear on the surface layer of the water body. The air extraction pump 15 is used to extract air, so that the suction nozzle generates suction to suck away the bubble layer on the surface layer of the water body.

[0038] The usage process of the present utility model is specifically as follows:

[0039] In the initial stage of stirring the filtered water and hydrogen peroxide, it is necessary to start the stirring rod to stir rapidly, so as to fully mix and stir the hydrogen peroxide solution and the filtered water evenly; in this stage, it is not necessary to extract air with the air extraction pump, because in the initial stage of rapid stirring, bubbles have not formed and have not floated on the surface layer of the water body, and at the same time the water flow rate is relatively fast, and the adsorption effect on bubbles is also relatively poor at this time. Therefore, after stopping the stirring, the suction nozzle should be made to inhale when the bubbles float to the water surface.

[0040] During the process, in the initial stage of rapid stirring of the stirring rod, due to the centrifugal force generated by the rotation of the stirring rod, the ball valve is thrown out to the rotation axis, so that the ball valve blocks one end of the suction nozzle, and then cuts off the passage between the air extraction pump and the suction nozzle to prevent the suction nozzle from inhaling air in this stage; when the stirring rod stops rotating, the ball valve loses the action of centrifugal force and is reset under the drive of the spring. At this time, the circuit between the suction nozzle and the air extraction pump is connected, the air extraction pump starts to work, the suction nozzle starts to generate suction to inhale air, and sucks away the bubble layer on the surface layer of the water body through the straw, so as to complete the bubble removal work on the water surface.

[0041] It should be noted that: the present utility model sucks away the bubbles on the water surface through the suction nozzle, reducing the obstacles in the ultraviolet irradiation path and avoiding the problem of affecting the photocatalytic efficiency due to the generation of bubbles; and during specific operation, after observing the appearance of bubbles on the water surface, the air extraction pump can also be appropriately started under the stirring of the stirring rod, so that the suction nozzle rotates circumferentially driven by the stirring rod and adsorbs the bubbles in a circle on the water surface, which can cover a wider water surface range and ensure the complete removal of bubbles; in addition, the air extraction pump in the present utility model is an existing mature technology, and its structural features will not be elaborated herein.

[0042] The above relevant descriptions and the descriptions of the embodiments are for the convenience of those of ordinary skill in the art to understand and apply the present utility model. Obviously, those familiar with the technology in this field can easily make various modifications to these contents and apply the general principles described herein to other embodiments without creative labor. Therefore, the present utility model is not limited to the above relevant descriptions and the descriptions of the embodiments, and the improvements and modifications made by those skilled in the art according to the disclosure of the present utility model without departing from the scope of the present utility model should be within the protection scope of the present utility model.

Claims

1. A device for uniformly mixing H2O2 and water in a photocatalytic device, including a photocatalytic device, the photocatalytic device including a photocatalytic degradation reactor and a submersible pump stirring system disposed within the photocatalytic degradation reactor, characterized in that, The submersible pump mixing system includes: A mixing tank, with an opening provided at the top of the mixing tank; A mixing rod, one end of which is rotatably connected to the bottom of the mixing tank; A suction nozzle, which is provided on the mixing rod; A suction pipe, which is arranged inside the mixing rod and one end of which is in communication with the suction nozzle; An air extraction pump, which is connected to the other end of the suction pipe.

2. The H2O2 and water uniform mixing device for a photocatalytic device according to claim 1, characterized in that, A floating block is arranged inside the mixing rod, wherein the suction nozzle is arranged on the floating block; a ball valve is arranged inside the floating block, one end of the ball valve is connected with a spring, the spring is connected with the floating block, and the other end of the ball valve is arranged in cooperation with the suction nozzle.

3. The H2O2 and water uniform mixing device for a photocatalytic device according to claim 1, characterized in that, The mixing rod is of a hollow structure.

4. The H2O2 and water uniform mixing device for a photocatalytic device according to claim 2, characterized in that, A sliding groove is further provided on the mixing rod, and the suction nozzle moves on the sliding groove.

5. The H2O2 and water uniform mixing device for a photocatalytic device according to claim 2, characterized in that, A plurality of through holes are provided on the mixing rod.

6. The H2O2 and water uniform mixing device for a photocatalytic device according to claim 4, characterized in that, The floating block is provided with a horizontally arranged sliding rail, and the ball valve is slidably connected to the sliding rail. Among them, the sliding groove provides positioning and guiding functions for the movement of the ball valve.

7. The H2O2 and water uniform mixing device for a photocatalytic device according to claim 2, characterized in that, The diameter of the ball valve is larger than the diameter of one end of the suction nozzle.

8. The H2O2 and water uniform mixing device for a photocatalytic device according to claim 2, wherein The floating block and the suction nozzle can slide up and down inside the mixing rod under the action of water buoyancy.

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