Ozone water wheat wetting sterilization system and sterilization method

Abstract

The invention provides an ozone water wheat wetting sterilization system and method. The sterilization system is composed of a water supply pressure tank system, a PEM electrolysis ozone generator, a gas-liquid gas dissolving system, an ozone water flow metering system and an electric control system. Wherein the water supply pressure tank system is respectively connected with the PEM electrolytic ozone generator and the gas-liquid gas dissolving system through pipelines, the PEM electrolytic ozone generator is connected with the gas-liquid gas dissolving system through a pipeline, and the gas-liquid gas dissolving system is connected with the ozone water flow metering system through a pipeline; the PEM electrolytic ozone generator, the gas-liquid gas dissolving system and the ozone water flow metering system are all in signal connection with the electric control system and receive instructions of the electric control system. The ozone water wheat wetting and sterilizing system is composed of the mixing pump, the efficient mixer, the related instrument valve and the control system, the ozone gas flow and the water flow can be accurately controlled, gas-liquid mixing with the highest concentration is achieved, the corresponding concentration is achieved, and sterilization and insect killing treatment on polluted wheat of different varieties and different qualities are facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of ozone moist wheat sterilization, and particularly relates to an ozone moist wheat sterilization system and a sterilization method. Background Art

[0002] Ozone is highly efficient, easily decomposable, and does not pollute samples, and can be used as an "ideal green strong oxidant" in modern food industry. According to previous research reports, ozone can kill insects thoroughly, effectively reduce the microbial content in grains, achieve the effects of sterilization and mildew prevention, and can degrade mycotoxins and pesticide residues, improving the quality of wheat and flour. At the same time, due to the unstable nature of ozone itself, it can be degraded into oxygen in a short period of time without causing residual pollution. In production practice, ozone water or ozone gas is usually used to pretreat, store and process foods. Ozone has strong oxidizing properties and can replace chemical treatment agents such as potassium bromate, chlorine, and benzoyl peroxide in flour.

[0003] The prior art discloses a PEM electrolysis ozone generator with the publication number: CN214881852U. The key points of its technical solution are: a PEM electrolysis ozone generator, including a valve body with an anode chamber and an anode water tank. The bottom of the valve body is provided with a plurality of through holes, and the axis lines of the plurality of through holes are inclined and all point to the connection between the valve body and the anode water tank. A cover plate is fixedly connected to the valve body. In the above-mentioned PEM electrolysis ozone generator, water in the anode water tank is injected into the anode chamber through the through holes by a water pump, and the water flow ejected from the through holes rushes towards the connection between the anode chamber and the anode water tank. Since the water flow velocity ejected from the through holes is relatively fast, a low pressure is generated, which drives the water in the anode chamber to flow towards the connection between the anode chamber and the anode water tank, thereby accelerating the convection of water between the anode chamber and the anode water tank, thereby accelerating the transfer of heat in the anode chamber to the anode water tank, thereby accelerating the cooling of the anode chamber, reducing the decomposition of ozone, and ensuring the production efficiency of ozone.

[0004] Therefore, it is very necessary to design a highly efficient gas-liquid mixing device and a sterilization device for preparing ozone by low-voltage electrolyzed water with strong practicability. Summary of the Invention

[0005] The purpose of the present invention is to provide an ozone moist wheat sterilization system and a sterilization method to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: An ozone moisturizing wheat sterilization system, comprising: a water supply pressure tank system, a PEM electrolytic ozone generator, a gas-liquid dissolution system, an ozone water flow measurement system, and an electric control system; the water supply pressure tank system is respectively connected to the PEM electrolytic ozone generator and the gas-liquid dissolution system through pipelines, the PEM electrolytic ozone generator is connected to the gas-liquid dissolution system through a pipeline, and the gas-liquid dissolution system is connected to the ozone water flow measurement system through a pipeline; the PEM electrolytic ozone generator, the gas-liquid dissolution system, and the ozone water flow measurement system are all signal-connected to the electric control system and receive instructions from the electric control system; The gas-liquid dissolution system includes a gas storage tank, a mixing pump, a high-speed mixer, a finished product tank, an ozone concentration sensor, and valves; the gas storage tank is connected to the upper inlet of the mixing pump through a pipeline, the outlet of the mixing pump is connected to the high-speed mixer through a pipeline, the upper outlet of the high-speed mixer is connected to the lower inlet of the mixing pump through a pipeline, and a closed loop is formed between the high-speed mixer and the mixing pump through a pipeline; the lower outlet of the high-speed mixer is connected to the water inlet of the finished product tank through a pipeline, an ozone concentration sensor is installed on the finished product tank, the outlet of the finished product tank is divided into two paths, one path is connected to the high-speed mixer through a pipeline, and the other path is connected to the booster pump of the ozone water flow measurement system through a pipeline.

[0007] Further, the water supply pressure tank system includes a coarse water filter, a booster pump, a pressure tank, and valves; the coarse water filter, the booster pump, the pressure tank, and the valves are sequentially connected through pipelines; the outlet of the pressure tank is respectively connected to the filter of the PEM electrolytic ozone generator and the high-speed mixer of the gas-liquid dissolution system through pipelines.

[0008] Further, the PEM electrolytic ozone generator includes a filter and an ozone generator, the filter is connected to the inlet of the ozone generator through a pipeline, and the outlet of the ozone generator is connected to the gas storage tank of the gas-liquid dissolution system through a pipeline.

[0009] Further, the ozone water flow measurement system includes a booster pump, a pressure gauge, a pressure sensor, a manual pressure regulating valve, an automatic pressure regulating valve, and a flow meter; the booster pump is connected to the flow meter through a pipeline, and a pressure gauge, a pressure sensor, a manual valve, and an automatic pressure regulating valve are provided on the connecting pipeline between the booster pump and the flow meter.

[0010] Further, the electric control system includes a PLC and a configuration touch screen.

[0011] An ozone moisturizing wheat sterilization method, the specific steps are as follows: S1. The water enters the pressure tank and is divided into two paths; the water in the first water path is filtered through a filter and enters the PEM electrolytic ozone generator, hydrogen and ozone gas are electrolyzed in the ozone generator of the PEM electrolytic ozone generator, and the ozone gas enters the gas storage tank of the gas-liquid dissolution system; the water in the second water path enters the high-speed mixer of the gas-liquid dissolution system; S2. The ozone gas in the gas storage tank and the water in the high-speed mixer enter the mixing pump together for high-speed centrifugal dispersion. Pressurized dissolution occurs in the high-speed mixer to generate ozone water. The ozone water concentration is detected by the ozone sensor on the finished product tank. When the ozone water concentration reaches 3 - 5 ppm, the flow valve of the high-speed mixer is adjusted through the reflux pipeline for re-dissolution; S3. The ozone water with qualified concentration is regulated to 0.25 - 3 MPa by the flow booster pump, and the output pressure is adjusted to 1.5 - 2 MPa through the double-pid control regulating valve to maintain a stable flow supply for the grain moistening process; S4. The ozone water is transported to the wheat mixer to implement grain moistening and conditioning, completing the sterilization process.

[0012] Beneficial effects: 1. This high-efficiency gas-liquid mixing device for preparing ozone from low-pressure electrolyzed water, consisting of a mixing pump, a high-speed mixer, and related instrument valves and a control system, can accurately control the flow rate of ozone gas and water, achieving the highest concentration of gas-liquid mixing and reaching the corresponding concentration, facilitating the sterilization and insecticidal treatment of contaminated wheat of different varieties and qualities.

[0013] 2. This high-efficiency gas-liquid mixing device for preparing ozone from low-pressure electrolyzed water, by setting up an electrolysis device for integrated PEM electrolysis to prepare ozone, with filtered pure water, hydrogen, and the waste liquid of filtered pure water mixed and discharged, solves the safety problem of hydrogen being flammable.

[0014] 3. This high-efficiency gas-liquid mixing device for preparing ozone from low-pressure electrolyzed water is reasonably designed, efficient, and green, integrating sterilization, mildew elimination, and inhibition of vomitoxin, with good effects and facilitating large-scale production; at the same time, in this invention, by introducing high-concentration ozone during the wheat moistening period, the previously existing bacteria can be effectively killed, the generation of bacteria and molds during the wheat moistening period can be inhibited, and the generation of vomitoxin can be avoided.

[0015] 4. This high-efficiency gas-liquid mixing device for preparing ozone from low-pressure electrolyzed water is designed to use a hydrogen energy PEM low-pressure electrolytic cell, with an additional catalyst to prepare ozone, and a self-prepared pure water filtration system. The generated ozone concentration reaches 28%, with slow attenuation, which is more conducive to the sterilization of wheat flour. Description of the drawings

[0016] Figure 1 It is the process flow chart of the ozone water mixing system of the present invention; Figure 2 It is the front view structural schematic diagram of the pressure tank of the ozone water wheat moistening mixing system equipment of the present invention; Figure 3 It is the overall three-dimensional front view structural schematic diagram of the ozone water wheat moistening mixing system equipment of the present invention; Figure 4 It is the overall three-dimensional top view structural schematic diagram of the ozone water wheat moistening mixing system equipment of the present invention; Figure 5 Schematic diagram of the overall three-dimensional side view of the ozone water-moistened wheat mixing system equipment of the present invention; Figure 6 Power supply and power circuit diagram of the ozone water-moistened wheat intelligent control system of the present invention; Figure 7 Control power supply circuit diagram of the ozone water-moistened wheat intelligent control system of the present invention; Figure 8 Touch screen and PLC circuit diagram of the ozone water-moistened wheat intelligent control system of the present invention; Figure 9 Switch circuit diagram of the ozone water-moistened wheat intelligent control system of the present invention; Figure 10 A1IN01 circuit diagram of the ozone water-moistened wheat intelligent control system of the present invention; Figure 11 A1IN02 circuit diagram of the ozone water-moistened wheat intelligent control system of the present invention; Figure 12 A1OUT01 circuit diagram of the ozone water-moistened wheat intelligent control system of the present invention; Figure 13 A1OUT02 circuit diagram of the ozone water-moistened wheat intelligent control system of the present invention; Figure 14 Alarm lamp and valve control circuit diagram of the ozone water-moistened wheat intelligent control system of the present invention.

[0017] Reference numerals: 1, water supply pressure tank; 10, coarse water filter; 11, pressure pump; 12 - pressure tank; 2, PEM electrolytic ozone generator; 20, filter; 21, ozone generator; 3, gas-liquid dissolution system; 30, gas storage tank; 31, mixing pump; 32, high-speed mixer; 33, finished product tank; 34, ozone concentration sensor; 4, ozone water flow measurement system; 40, booster pump; 41, pressure gauge; 42, pressure sensor; 43, flow meter; 5, electric control system. Detailed implementation manners

[0018] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further elaborates on the present invention in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The following further describes the application principle of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0020] The processing principle of the "ozone water moisturizing wheat sterilization treatment system" processing line is based on the cleaning process of wheat flour processing, specifically the moistening and conditioning section. In this section, ordinary drinking water used for moistening the grains is dissolved with high-concentration ozone to prepare a certain amount of ozone water. Utilizing the characteristics of water as a carrier for easy measurement and the high sterilization rate of ozone in water, the mycotoxins in wheat are decomposed. Specifically as follows:

[0021] Please refer to Figure 1-14 , the present invention provides the following technical solutions: An ozone water moisturizing wheat sterilization system includes: a water supply pressure tank system 1, a PEM electrolytic ozone generator 2, a gas-liquid dissolution system 3, an ozone water flow metering system 4, and an electric control system 5. The water supply pressure tank system 1 is respectively connected to the PEM electrolytic ozone generator 2 and the gas-liquid dissolution system 3 through pipelines. The PEM electrolytic ozone generator 2 is connected to the gas-liquid dissolution system 3 through a pipeline. The gas-liquid dissolution system 3 is connected to the ozone water flow metering system 4 through a pipeline; the water supply pressure tank system 1, the PEM electrolytic ozone generator 2, the gas-liquid dissolution system 3, and the ozone water flow metering system 4 are all signal-connected to the electric control system 5 and receive the instructions of the electric control system 5.

[0022] The water supply pressure tank system 1 is composed of a coarse water filter 10, a pressurizing pump 11, a pressure tank 12, and valves. The water supply pressure tank system 1 provides water sources for the entire system. At the inlet of the external water source, there are successively connected a coarse water filter 10, a pressurizing pump 11, a pressure tank 12, and valves through pipelines; a pressure sensor, a safety valve, and a pressure gauge are installed at the top of the pressure tank 12. The outlet of the pressure tank 12 is connected to the filter 20 of the PEM electrolytic ozone generator 2 through one pipeline, and the other pipeline is connected to the high-speed mixer 32 of the gas-liquid dissolution system 3.

[0023] The PEM electrolytic ozone generator 2 includes a filter 20 and an ozone generator 21. The filter 20 is connected to the inlet of the ozone generator 21 through a pipeline, and the outlet of the ozone generator 21 is connected to the gas storage tank 30 of the gas-liquid dissolution system 3 through a pipeline.

[0024] The gas-liquid dissolved gas system 3 includes a gas storage tank 30, a mixing pump 31, a high-speed mixer 32, a finished product tank 33, an ozone concentration sensor 34, and valves. The gas storage tank 30 is connected to the upper inlet of the mixing pump 31 through a pipeline, and a valve is provided on the pipeline between the gas storage tank 30 and the mixing pump 31. The outlet of the mixing pump 31 is connected to the high-speed mixer 32 through a pipeline. The upper outlet of the high-speed mixer 32 is connected to the lower inlet of the mixing pump 31 through a pipeline, and a closed loop is formed between the high-speed mixer 32 and the mixing pump 31 through a pipeline. The lower outlet of the high-speed mixer 32 is connected to the water inlet of the finished product tank 33 through a pipeline. An ozone concentration sensor 34 is installed on the finished product tank 33. The outlet of the finished product tank 33 is divided into two paths. One path is connected to the high-speed mixer 32 through a pipeline, and the other path is connected to the booster pump 40 of the ozone water flow metering system 4 through a pipeline.

[0025] The ozone water flow metering system 4 includes a booster pump 40, a pressure gauge 41, a pressure sensor 42, a manual pressure regulating valve, an automatic pressure regulating valve, and a flowmeter 43. The booster pump 40 is connected to the flowmeter 43 through a pipeline, and a pressure gauge 41, a pressure sensor 42, a manual valve, and an automatic pressure regulating valve are provided on the connecting pipeline between the booster pump 40 and the flowmeter 43.

[0026] The electric control system 5 includes a PLC and a configuration touch screen. The electric control system 5 mainly controls the flow rate and pressure of the mixing pump 31 and monitors the ozone concentration sensor 34 in real time. This process is automatically controlled by the PLC and can be tracked on the HMI screen or remotely. If the contamination level of miscellaneous bacteria at the ozone inlet fluctuates, the automatic process control can adjust the water flow rate and dissolved gas efficiency. According to the ozone water concentration attenuation value detected by the sensor, the air flow and water flow of the incoming and outgoing products are measured regularly to ensure the sterilization efficiency.

[0027] A direct-connected standby pipeline is set for each valve and flow measurement in the system to avoid problems such as shutdown for maintenance and inability to produce normally.

[0028] Among them, in the case of shutdown, the wastewater and cleaning wastewater of the finished product tank 33 are discharged together with the wastewater of the ozone generator 21 into the centralized wastewater tank.

[0029] An ozone water conditioning and sterilization method: S1. The water from the workshop enters the pressure tank 12 through the tap water inlet. The water in the pressure tank 12 is divided into two paths. The water in the first water path is filtered by a precision filter and then enters the PEM electrolytic ozone generator 2. In the ozone generator 21 of the PEM electrolytic ozone generator 2, water is electrolyzed to produce hydrogen and ozone gas. The ozone gas enters the gas storage tank 30 in the gas-liquid dissolved gas system 3 through the air outlet of the ozone generator 21. The hydrogen and the wastewater produced by pure water preparation are mixed and discharged from the wastewater outlet of the ozone generator into the wastewater tank and then into the sewer. The water in the second water path enters the high-speed mixer 32 of the gas-liquid dissolved gas system 3.

[0030] After the ozone generated by electrolysis reaches a certain pressure and flow rate through the gas storage tank 30, the required flow rate is adjusted by the needle valve. After the water in the water circuit 2 is metered by the flow meter valve, it enters the mixing pump 31 for high-speed centrifugal dispersion, and then enters the high-speed mixer 32 for pressurization to dissolve the water and ozone. The dissolved ozone gas water enters the finished product tank 33, and the ozone sensor 34 on the finished product tank 33 is used to detect whether the concentration of the ozone water reaches the set concentration target of 3-5 ppm. If the concentration of the ozone water does not meet the standard, the ozone water flows back from the outlet of the finished product tank 33 to the high-speed mixer 32 through the return pipeline, and the flow rate valve of the high-speed mixer 32 is adjusted to adjust the pressure dissolution, so that the concentration of the ozone water meets the standard.

[0031] S3. The ozone water with qualified concentration is regulated to a stable pressure of 0.25-3 MPa by the flow rate booster pump 40.

[0032] According to the flow rate measurement requirements of the flow meter 43, using the double-pid control principle, according to the set flow rate data, the size of the electric control valve switch is adjusted dynamically to 1.5-2 MPa pressure, and the flow rate measurement requirements are met under the control of pressure fluctuations, meeting the sterilization requirements of the water used in the grain moistening process.

[0033] S4. The ozone water with qualified concentration is mixed and stirred with the mixer in the wheat processing workshop to complete the grain moistening and conditioning sterilization process.

[0034] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ozone moisturizing wheat sterilization system, characterized in that, Including: A water supply pressure tank system, a PEM electrolytic ozone generator, a gas-liquid dissolution system, an ozone water flow metering system, and an electric control system; the water supply pressure tank system is respectively connected to the PEM electrolytic ozone generator and the gas-liquid dissolution system through pipelines, the PEM electrolytic ozone generator is connected to the gas-liquid dissolution system through a pipeline, and the gas-liquid dissolution system is connected to the ozone water flow metering system through a pipeline; the PEM electrolytic ozone generator, the gas-liquid dissolution system, and the ozone water flow metering system are all signal-connected to the electric control system and receive the instructions of the electric control system. The gas-liquid dissolution system includes a gas storage tank, a mixing pump, a high-speed mixer, a finished product tank, an ozone concentration sensor, and valves; the gas storage tank is connected to the upper inlet of the mixing pump through a pipeline, the outlet of the mixing pump is connected to the high-speed mixer through a pipeline, the upper outlet of the high-speed mixer is connected to the lower inlet of the mixing pump through a pipeline, and a closed loop is formed between the high-speed mixer and the mixing pump through a pipeline; the lower outlet of the high-speed mixer is connected to the water inlet of the finished product tank through a pipeline, an ozone concentration sensor is installed on the finished product tank, and the outlet of the finished product tank is divided into two paths, one path is connected to the high-speed mixer through a pipeline, and the other path is connected to the booster pump of the ozone water flow metering system through a pipeline.

2. The ozone moist wheat sterilization system according to claim 1, wherein, The water supply pressure tank system includes a coarse water filter, a pressure pump, a pressure tank, and valves; the coarse water filter, the pressure pump, the pressure tank, and the valves are sequentially connected through pipelines; the outlet of the pressure tank is respectively connected to the filter of the PEM electrolytic ozone generator and the high-speed mixer of the gas-liquid dissolution system through pipelines.

3. The ozone moist wheat sterilization system according to claim 1, wherein The PEM electrolytic ozone generator includes a filter and an ozone generator, the filter is connected to the inlet of the ozone generator through a pipeline, and the outlet of the ozone generator is connected to the gas storage tank of the gas-liquid dissolution system through a pipeline.

4. The ozone moist wheat sterilization system according to claim 1, characterized in that, The ozone water flow metering system includes a booster pump, a pressure gauge, a pressure sensor, a manual pressure regulating valve, an automatic pressure regulating valve, and a flow meter; the booster pump is connected to the flow meter through a pipeline, and a pressure gauge, a pressure sensor, a manual valve, and an automatic pressure regulating valve are provided on the connecting pipeline between the booster pump and the flow meter.

5. The ozone moist wheat sterilization system according to claim 1, characterized in that, The electric control system includes a PLC and a configuration touch screen.

6. An ozone moist wheat sterilization method, characterized in that, The specific steps are as follows: S1. The water entering the pressure tank is divided into two paths; the water in the first water path is filtered by a filter and enters the PEM electrolytic ozone generator, hydrogen and ozone gas are electrolyzed in the ozone generator of the PEM electrolytic ozone generator, and the ozone gas enters the gas storage tank of the gas-liquid dissolution system; the water in the second water path enters the high-speed mixer of the gas-liquid dissolution system. S2. The ozone gas in the gas storage tank and the water in the high-speed mixer enter the mixing pump together for high-speed centrifugal dispersion, are pressurized and dissolved in the high-speed mixer to generate ozone water, the ozone water concentration is detected by the ozone sensor on the finished product tank, and when the ozone water concentration reaches 3-5 ppm, the flow valve of the high-speed mixer is adjusted through the return pipeline for re-dissolution. S3. The ozone water with qualified concentration is regulated to 0.25-3 MPa by the flow booster pump, and the output pressure is adjusted to 1.5-2 MPa through the double-pid control regulating valve to maintain the stable flow supply of the grain moistening process. S4. The ozone water is transported to the wheat mixer to implement grain moistening and conditioning, and the sterilization process is completed.

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