Water mist ozone purification device

Abstract

The utility model discloses a water mist ozone purification device. An air booster pump of the water mist ozone purification device is connected with a high-pressure air storage tank; a gas outlet of the ozone generator is connected with an ozone balance gas storage tank; the high-pressure gas storage tank is connected with the high-pressure water storage tank, the ozone balance gas storage tank is connected with the high-pressure water storage tank, and the high-pressure water storage tank is provided with a water mist nozzle. A first air inlet hole and a second air inlet hole are formed in the rear end of the water mist spray head, the first air inlet hole is connected with an air outlet of the ozone balance air storage tank, the second air inlet hole is communicated with air, flow guide plates are arranged in the first air inlet hole and the second air inlet hole respectively, and each flow guide plate forms a flow guide device; and the caliber of the pipeline at the rear end of the water mist nozzle is reduced along the flowing direction of fluid. The utility model solves the problems of heavy dust and smoke pollution and low safety in construction during engineering blasting, and is not only beneficial to smoke control, but also beneficial to discharge of toxic and harmful gases.

Description

Technical Field

[0001] The utility model relates to a blasting smoke treatment technology, in particular to a water mist ozone purification device. Background Art

[0002] Drilling and blasting is one of the main construction methods for underground projects such as underground chambers, tunnels, and mines in my country. The blasting phase mainly includes three stages: drilling, charging, and detonation. Due to the small diameter of the drill hole, the explosives release a huge amount of energy in a short period of time, thereby breaking the rock and completing the tunnel face excavation. Due to the use of industrial explosives, the blasting process will generate a large amount of dust. Under the influence of the airflow disturbance in the tunnel, PM 10 The particles within the tunnel form Brownian motion and generate dust clouds, resulting in poor dust settling effects. Due to the poor ventilation effect in the narrow and long construction space, the dust cloud is difficult to discharge. Even after several hours of blasting, the dust concentration in the tunnel is still high. The harsh air environment in the tunnel greatly reduces the construction efficiency of the construction workers, so the dust removal efficiency problem is very prominent. On the other hand, blasting also produces a large amount of carbon monoxide (CO), nitrogen oxides (NO X ), ammonia (NH3), hydrogen sulfide (H2S), sulfur dioxide (SO2) and other toxic and harmful gases, NO X Unpleasant odors such as NH3, H2S, SO2, etc. will cause great irritation to the human respiratory tract, which not only affects the construction period, but also poses a great threat to the physical and mental health of tunnel construction workers.

[0003] Existing dust and fume control methods primarily focus on five key areas: reduction, lowering, exhausting, removing, and blocking. While these can reduce dust to a certain extent, they still suffer from shortcomings such as poor treatment of small dust particles, the need for significant water resources, and secondary pollution outside the tunnel. Furthermore, physical methods are limited in their effectiveness in removing the toxic and harmful gases and their corresponding pungent odors produced by blasting.

[0004] Most of the waste gas in blasting smoke is soluble in water, but carbon monoxide (CO) and nitric oxide (NO) gases are difficult to dissolve in water. Conventional water mist dust removal technology is difficult to remove them, so there is an urgent need to develop a technology that can effectively remove harmful gases that are difficult to dissolve in water. Utility Model Content

[0005] The technical problem to be solved by the utility model is that, in view of the deficiency that waste gas insoluble in water in existing blasting smoke is difficult to remove, the utility model provides a water mist ozone purification device which can efficiently and safely remove smoke and dust from tunnels.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A water mist ozone purification device comprises a mobile base, on which an air booster pump, a high-pressure gas tank, an ozone generator, an ozone balance gas tank, and a high-pressure water tank are installed. The air booster pump is connected to the high-pressure gas tank; the air outlet of the ozone generator is connected to the ozone balance gas tank; the high-pressure gas tank is connected to the high-pressure water tank, and the ozone balance gas tank is connected to the high-pressure water tank. A water mist nozzle is installed on the high-pressure water tank.

[0008] Preferably, a first air inlet and a second air inlet are provided at the rear end of the water mist nozzle, the first air inlet is connected to the air outlet of the ozone balance gas storage tank, the second air inlet is connected to the air, and guide plates are respectively provided inside the first air inlet and the second air inlet along the direction of liquid flow, each guide plate forms a deflector, so that the diameter of the pipe at the rear end of the water mist nozzle changes from large to small along the direction of fluid flow.

[0009] Preferably, the angle β between the guide plate and the water mist nozzle pipe wall is arctan(P1 / P0-P2), where P1 is the air inlet pressure of the micro-nano water mist nozzle, P2 is the negative pressure generated in the micro-nano water mist nozzle, and P0 is the atmospheric pressure.

[0010] Preferably, the mobile base is also equipped with an industrial control machine, a gas monitoring sensor, and a vibration sensor. The air booster pump is connected to the high-pressure gas tank via solenoid valve No. 4; the ozone generator's outlet is connected to the ozone balance gas tank via solenoid valve No. 3, which serves as an air inlet control valve; the high-pressure gas tank is connected to the high-pressure water tank via solenoid valve No. 2, and the ozone balance gas tank is connected to the high-pressure water tank via solenoid valve No. 1. The industrial control machine is connected to the air booster pump, ozone generator, and solenoid valves No. 1, 2, 3, and 4, the gas monitoring sensor, and the vibration sensor. In this way, the industrial control machine can control the ozone generator's operating power, water mist injection time, ozone mixing amount, gas tank pressure, equipment startup time, gas monitoring frequency, etc.

[0011] Preferably, the air booster pump is provided with an air inlet, an air inlet valve is installed on the air inlet, and the air booster pump is equipped with a battery to power the air, so as to facilitate the use of the air booster pump to add gas to the high-pressure gas storage tank and pressurize the added gas.

[0012] Preferably, the air source of the air booster pump is compressed air or CO2.

[0013] Preferably, the No. 2 solenoid valve is a large-flux high-speed solenoid valve. When the No. 2 solenoid valve is opened, the high-pressure gas in the high-pressure gas tank quickly and in large quantities enters the high-pressure water tank, providing powerful power for water mist injection, and the instantaneous power can reach 190kw.

[0014] Preferably, the water mist nozzle is a micro-nano water mist nozzle.

[0015] Preferably, a first pressure gauge is installed on the high-pressure gas storage tank, and a second pressure gauge is installed on the ozone balance gas storage tank. Preferably, the concentration of ozone water in the high-pressure water storage tank at room temperature is within 9mg / L±9mg / L*20%.

[0016] Preferably, the ozone pressure in the ozone balance gas storage tank is set to 1.5 MPa.

[0017] Optimally, the micro-nano water mist nozzles can be activated singly or in multiple locations to target tunnel dust of varying diameters. A pressure relief valve is installed on the ozone balancing tank. By adjusting the pressure relief valve and the caliber and number of the micro-nano water mist nozzles, the pressure in the ozone balancing tank is controlled, and the spray distance and velocity are adjusted to achieve long-range, wide-area spray coverage, with controllable spray time and flow rate. According to calculations, this utility model can spray 800L of water to a tunnel face 70-120m away within 20 seconds, with a power output of up to 190kW, effectively covering and extinguishing large amounts of dust generated by blasting.

[0018] Preferably, the industrial control machine regulates the working power of the ozone generator, the design pressure of the ozone balance gas storage tank, the working pressure and time of the air booster pump, the water mist injection time, the ozone mixing amount in the high-pressure water storage tank, the pressure of the high-pressure gas storage tank (adjustable 1 to 3 MPa), the equipment startup time, and the gas monitoring frequency according to the concentration monitored by the gas sensor.

[0019] The utility model makes full use of the adsorption effect of ultrafine nano water mist on dust to accelerate dust sedimentation. At the same time, the high-pressure gas output by the high-pressure gas tank is used to provide a power source to spray the double fluid mixed with ozone and ultrafine water mist over a long distance: in this process, ozone not only enters the high-pressure water tank and mixes with water to form ozone water, but also when the ozone water is input into the micro-nano water mist nozzle by high pressure, the negative pressure environment formed in the micro-nano water mist nozzle at the rear end of the micro-nano water mist nozzle is used to replenish ozone and air in the sprayed water mist, so that the sprayed water mist becomes a double fluid state of gas and fluid mixed for high-speed spraying, fully enhancing the ozone dissolved content in the sprayed water mist particles (up to 9 mg / L at room temperature), and also playing a role in enhancing the atomization effect, thereby utilizing the strong oxidizing property of ozone to decompose toxic and harmful gases in smoke and eliminate blasting odor, greatly improving the removal efficiency of carbon monoxide and nitric oxide.

[0020] The utility model cleverly sets a guide plate at the first and second air inlet holes at the rear end of the micro-nano water mist nozzle, and the angle β between the guide plate and the wall of the micro-nano water mist nozzle is arctan (P1 / P0-P2), so that the diameter of the tube at the rear end of the micro-nano water mist nozzle changes from large to small, ensuring the formation of a negative pressure environment and further ensuring that the water mist is ejected at high speed and long distance. Experimental results show that the water mist spraying distance of the utility model can reach 120m, and the ultra-fineness of the water mist can reach 2 -10 Micron level.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1) The high-pressure gas source provided by the high-pressure gas storage tank of the utility model can quickly atomize the water in the high-pressure water storage tank and form a high-speed, high-pressure water jet, which can quickly form a water mist curtain near the tunnel face, and can immediately suppress the spread of dust: because the water is atomized into ultra-fine water mist at the micron-nanometer level, it is more evenly dispersed and permeates the entire tunnel space, and has a better effect on wrapping fine dust; under the action of airflow disturbance and gravity sedimentation, it can quickly suppress the spread of dust near the tunnel face and accelerate sedimentation.

[0023] 2) The ozone in the water mist sprayed by the utility model can directly oxidize carbon monoxide and nitric oxide or react with the micro-nano bubble water mist to generate a large number of hydroxyl free radicals. These hydroxyl free radicals are active substances with extremely strong oxidizing ability and can quickly decompose odorous gases such as CO and NO.

[0024] 3) The utility model fully utilizes the strong oxidizing ability of ozone, the high adsorption of the extremely large specific surface area of ​​dual-fluid micro-nano bubbles and the all-round coverage of instantaneous bubble bursting, thereby solving the problems of large construction dust and fume pollution and low safety during engineering blasting.

[0025] 4) The device of the utility model is not only beneficial to smoke and dust control in open air environments, but also beneficial to reducing the ventilation time of underground chambers, and also beneficial to the removal of toxic and harmful gases, which can greatly improve the construction efficiency of engineering blasting. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic structural diagram of the water mist ozone purification device of the utility model;

[0028] Figure 2This is an enlarged view of the structure of the water mist nozzle of the utility model.

[0029] Figure 3 This is a schematic diagram of the use environment of the utility model.

[0030] Figure 4 This is a diagram showing the CO removal effect of the utility model.

[0031] In the attached figure: 1. Air compressor inlet valve; 2. Air booster pump; 3. First pressure gauge; 4. High-pressure gas storage tank; 5. Battery; 6. Gas monitoring sensor; 7. Industrial control computer; 8. Ozone generator; 9. Control cable; 10. Pressure relief valve; 11. Second pressure gauge; 12. Ozone gas storage tank; 13. Ozone inlet pipe; 14. First air inlet; 15. Micro-nano water mist nozzle; 16. Water inlet valve; 17. High-pressure water storage tank; 18. Mobile base; 19. Solenoid valve No. 1; 20. Solenoid valve No. 2; 21. Solenoid valve No. 3; 22. Solenoid valve No. 4; 23. Second air inlet; 24. Guide plate. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with specific preferred embodiments, but the scope of protection of the present invention is not limited thereby.

[0033] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] Example 1

[0036] Reference Figure 1As shown, an embodiment of the water mist ozone purification device of the present invention includes an air compressor inlet valve 1, an air booster pump 2, a first pressure gauge 3, a high-pressure gas storage tank 4, a battery 5, a gas monitoring sensor 6, an industrial control machine 7, an ozone generator 8, a control cable 9, a pressure relief valve 10, a second pressure gauge 11, an ozone gas storage tank 12, an ozone inlet pipe 13, a first air inlet 14, a micro-nano water mist nozzle 15, a water inlet valve 16, a high-pressure water storage tank 17, a mobile base 18, and a vibration sensor (not shown in the figure).

[0037] An air compressor inlet valve 1 is installed on the air inlet of the air booster pump 2, and the air outlet of the air booster pump 2 is connected to the air inlet of the high-pressure gas storage tank 4 via a No. 4 solenoid valve 22, so that the high-pressure gas storage tank 4 is filled with air and pressurized by the air booster pump 2. The high-pressure gas source of the air booster pump 2 is compressed air or CO2.

[0038] The air outlet of the ozone generator 8 is connected to the air inlet of the ozone gas storage tank 12 through the No. 3 solenoid valve 21. The ozone gas storage tank 12 is installed with a pressure relief valve 10 and a pressure gauge 11. The No. 3 solenoid valve 21 is used as the air inlet control valve of the ozone gas storage tank 12.

[0039] The high-pressure gas tank 4 is connected to the high-pressure water tank 17 via solenoid valve No. 2 20, which controls the delivery of high-pressure gas into the high-pressure water tank 17. The ozone tank 12 is connected to the high-pressure water tank 17 via solenoid valve No. 1 19, which controls the delivery of ozone into the high-pressure water tank 17. The high-pressure gas tank 4 is also equipped with a first pressure gauge 3 for monitoring the gas pressure within the tank. The ozone tank 12 is also equipped with a second pressure gauge 11 for monitoring the gas pressure within the tank. The high-pressure water tank 17 is equipped with a micro-nano water mist nozzle 15 and a water inlet valve 16 for replenishing water to the high-pressure water tank 17. Solenoid valve No. 2 20 is preferably a high-throughput, high-speed solenoid valve, so that the high-pressure gas in the high-pressure gas tank 4 can quickly and massively enter the high-pressure water tank 17, providing powerful power for the water mist spraying, with an instantaneous power of up to 190 kW.

[0040] A first air inlet 14 and a second air inlet 23 are provided at the rear end of the micro-nano water mist nozzle 15. The first air inlet 14 is connected to the air outlet of the ozone balance gas storage tank 12 via the ozone inlet pipe 13, and the second air inlet 23 is connected to the air. Guide plates 24 are respectively provided inside the first air inlet 14 and the second air inlet 23 along the direction of liquid flow, and each guide plate 24 forms a deflector. When the injection pressure is constant, the guide device causes the diameter of the pipe at the rear end of the micro-nano water mist nozzle to change from large to small along the direction of fluid flow, thereby accelerating the fluid speed on the one hand, making the injection distance far enough to achieve continuous refinement of the water mist, and at the same time releasing the carbon dioxide gas in the water mist to cause bubble bursting, making the water mist particles finer to the micro-nano level particle size, adsorbing and capturing tiny dust to achieve dust reduction. On the other hand, a negative pressure environment is formed in the pipe at the rear end of the micro-nano water mist nozzle, so that ozone can be introduced through the first air inlet 14 and air can be introduced through the second air inlet 24, thereby increasing the ozone content in the sprayed water mist and making the sprayed water mist form a dual-fluid form of gas + fluid. The strong oxidizing properties of ozone are used to decompose toxic and harmful gases in the smoke, such as CO, NO, etc., to eliminate the blasting odor. The angle β between the guide plate 24 and the wall of the micro-nano water mist nozzle is arctan(P1 / P0-P2), where P1 is the air inlet pressure of the micro-nano water mist nozzle, P2 is the negative pressure generated in the water mist nozzle, and P0 is the atmospheric pressure. The angle β is preferably 35 degrees.

[0041] The mobile base 18 is a crawler-type mobile base, and the air booster pump 2, high-pressure gas storage tank 4, battery 5, gas monitoring sensor 6, industrial control machine 7, ozone generator 8, ozone gas storage tank 12, high-pressure water storage tank 17 and vibration sensor (not shown in the figure) are installed on the mobile base 18; the battery 5 is used to power the air booster pump 2; the gas monitoring sensor 6 is used to monitor the concentration of environmental dust and toxic gases and confirm system action; the vibration sensor is used to monitor environmental vibration and trigger system action.

[0042] The air booster pump 2, ozone generator 8, solenoid valve No. 1 19, solenoid valve No. 2 20, solenoid valve No. 3 21, solenoid valve No. 4 22, vibration sensor, and gas monitoring sensor 6 are respectively connected to the industrial control machine 7 through control cables 9, and each solenoid valve and electric drive accessory module is connected to the industrial control machine 7 through cables.

[0043] When the utility model purification device is working:

[0044] 1. First, start the ozone generator 8 in advance to produce and store ozone; then, simultaneously perform water filling and debugging of the high-pressure water storage tank 17, and gas filling and debugging of the high-pressure gas storage tank 4 and the ozone balance gas storage tank 12. The industrial control machine 7 controls the switches of various components. According to the working environment, the opening time of the No. 1 solenoid valve 19, the No. 2 solenoid valve 20, the No. 3 solenoid valve 21, and the No. 4 solenoid valve 22, the water mist flow rate of the micro-nano water mist nozzle, the injection time, etc. can be set in advance;

[0045] 2. By opening the No. 1 solenoid valve 19 in advance, ozone fills the ozone balance gas tank 12 while part of the ozone enters the high-pressure water tank 17 and dissolves in water to obtain ozone water;

[0046] 3. The air booster pump 1 injects air or carbon dioxide gas into the high-pressure gas tank 4 through the solenoid valve 22 No. 4 and fills it up. The high-pressure water tank 17 is filled with water through the water inlet valve 16. The equipment switch of the industrial control machine 7 is turned on, and the explosion sound is waited for to trigger the solenoid valve 20 No. 2 through the vibration sensor.

[0047] 4. High-pressure gas enters the high-pressure water tank 17 through the No. 2 solenoid valve 20, mixes with ozone water, and pressurizes the water to the micro-nano water mist nozzle 15, and then is quickly sprayed to the tunnel face. At the same time of spraying, the ozone balance gas tank 12 supplies ozone to the high-pressure water tank 17 through the No. 1 solenoid valve 19, supplies ozone at the rear end of the micro-nano water mist nozzle 15 through the ozone inlet pipe 13 and the first air inlet 14, and air enters the rear end of the micro-nano water mist nozzle 15 from the second air inlet 24, so that the micro-nano water mist nozzle 15 sprays out ozone-rich dual-fluid (gas + liquid) water mist particles; in this process, a negative pressure environment is formed in the rear end of the micro-nano water mist nozzle 15 due to the flow of high-pressure water flow, the setting of the first and second air inlets and their inner guide plates 24, so that ozone and air can be smoothly replenished into the rear end of the micro-nano water mist nozzle 15, thereby forming a dual fluid.

[0048] 5. High-speed water mist jets spray ozone-water mist dual-fluid particles around the smoke source at the face. The sprayed nano-water mist fully contacts and adsorbs the smoke solid particles to form large smoke particles that settle quickly, thereby achieving a dust reduction effect. At the same time, ozone reacts with water to generate hydroxyl free radicals with strong oxidizing ability, which quickly oxidize and decompose CO, SO2, H2S, NH3, NO and other gases produced by blasting, thereby achieving the effect of eliminating smoke. Figure 3 As shown, a monitoring instrument is installed in the tunnel, and the utility model purification device is tested for dust reduction and removal in the tunnel 50 meters away from the tunnel face. The experimental results are as follows Figure 4 As shown. Figure 4 It can be seen that the use of the ozone balance gas storage tank 12 in the purification device of the utility model can reduce the CO concentration from 37 mg / m 3 Reduced to 12 mg / m 3If ozone balance tank 12 is not used for dust removal, the CO concentration can only be reduced to 28mg / m 3 Obviously, the ozone balance gas storage tank 12 used in the present invention can significantly reduce the concentrations of CO and NO in the environment.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can, without departing from the scope of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification of the above embodiment made in accordance with the essence of the present invention without departing from the content of the present invention should fall within the scope of protection of the present invention.

Claims

1. A water mist ozone purification device, comprising a mobile base, characterized in that: An air booster pump, a high-pressure gas tank, an ozone generator, an ozone balance gas tank, and a high-pressure water tank are installed on the mobile base. The air booster pump is connected to the high-pressure gas tank; the air outlet of the ozone generator is connected to the ozone balance gas tank; the high-pressure gas tank is connected to the high-pressure water tank, and the ozone balance gas tank is connected to the high-pressure water tank. A water mist nozzle is installed on the high-pressure water tank.

2. The water mist ozone purification device according to claim 1, characterized in that: A first air inlet and a second air inlet are provided at the rear end of the water mist nozzle, the first air inlet is connected to the air outlet of the ozone balance gas storage tank, the second air inlet is communicated with the air, and guide plates are respectively provided inside the first air inlet and the second air inlet along the direction of liquid flow, each guide plate forming a deflector, so that the diameter of the pipe at the rear end of the water mist nozzle changes from large to small along the direction of fluid flow.

3. The water mist ozone purification device according to claim 2, characterized in that: The included angle β between the guide plate and the water mist nozzle pipe wall is arctan(P1 / P0-P2), where P1 is the air inlet pressure of the micro-nano water mist nozzle, P2 is the negative pressure generated in the micro-nano water mist nozzle, and P0 is the atmospheric pressure.

4. The water mist ozone purification device according to claim 1, characterized in that: An industrial control machine, a gas monitoring sensor, and a vibration sensor are also installed on the mobile base. The air booster pump is connected to the high-pressure gas tank via solenoid valve No. 4; the air outlet of the ozone generator is connected to the ozone balance gas tank via solenoid valve No. 3 serving as an air inlet control valve; the high-pressure gas tank is connected to the high-pressure water tank via solenoid valve No. 2, and the ozone balance gas tank is connected to the high-pressure water tank via solenoid valve No.

1. The industrial control machine is connected to the air booster pump, the ozone generator and solenoid valve No. 1, solenoid valve No. 2, solenoid valve No. 3, solenoid valve No. 4, the gas monitoring sensor, and the vibration sensor.

5. The water mist ozone purification device according to claim 1, characterized in that: The air booster pump is provided with an air inlet, an air inlet valve is installed on the air inlet, and the air booster pump is equipped with a battery for power supply.

6. The water mist ozone purification device according to claim 2, characterized in that: The air source of the air booster pump is compressed air or CO2.

7. The water mist ozone purification device according to claim 4, characterized in that: The No. 2 solenoid valve is a large-flux, high-speed solenoid valve.

8. The water mist ozone purification device according to any one of claims 1 to 7, characterized in that: The water mist nozzle is a micro-nano water mist nozzle.

9. The water mist ozone purification device according to any one of claims 1 to 7, characterized in that: A first pressure gauge is installed on the high-pressure gas storage tank, and a second pressure gauge is installed on the ozone balance gas storage tank.

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