Oil-water mist circulating purification treatment method

Abstract

The invention discloses an oil-water mist circulating purification treatment method which comprises the following steps: starting an oil-water-oil smoke purification treatment device, and enabling oil-water-oil smoke waste gas to sequentially pass through a plurality of stages of oil flingers in the oil-water-oil smoke purification treatment device; purified gas is output from the gas outlet port, the movable door body is started to be opened, the purified gas is output from the gas outlet port and enters the gas internal circulation channel through the door body mounting and connecting window after the movable door body is opened, and the purified gas is internally circulated and enters the multi-stage oil flinger to intercept and purify the treatment task; exhaust airflow is greatly reduced, and meanwhile the effect of reducing heat emission is achieved; when purified clean gas carrying gas heat flows back to the multi-stage oil flinger from the lower outlet of the gas internal circulation channel in a circulating manner, the clean gas carrying the gas heat maintains the overall temperature of the oil flinger and improves the liquidity and flowing discharge efficiency of liquid drops purified and collected by the oil flinger; and the self-cleanliness and the self-cleaning treatment efficiency of the oil throwing spokes are improved.

Description

Technical Field

[0001] This invention relates to a method for purifying oil fumes, and more particularly to a method for purifying oil-water-oil fumes by intercepting and purifying them. Background Technology

[0002] Industrial processing, such as oiling, heat treatment, machining, and processing of flammable and explosive materials, often generates large amounts of oil, water, and mist, leading to a corresponding increase in emissions of industrial oil, water, and mist fumes that are air pollutants. These emissions include not only those from machine tools and processing equipment but also from soldering processes in circuit board manufacturing, where the resulting fumes are harmful to both workers and the atmosphere. Furthermore, these emissions are often accompanied by the release of heat. Without proper purification, these fumes will cause varying degrees of health pollution to workshops, machining areas, and personnel, as well as environmental hazards. While some oil fume purification devices can intercept and purify oily water mist and fumes, these solutions only consider the interception and purification process and fail to effectively recover and utilize the heat generated by these gases during the process. This results in the heat being directly emitted, leading to low heat circulation efficiency and high energy consumption, which is detrimental to the current national environmental protection development needs. Furthermore, during the interception and purification process, the oil-slinging disc separates the purified gas from the intercepted oil and water droplets, collecting and discharging them. The discharge of these droplets is closely related to their temperature; lower temperatures result in lower fluidity, hindering efficient discharge. Additionally, over prolonged use, especially at low temperatures, oil residue can accumulate on the spokes of the oil-slinging disc, requiring regular disassembly and cleaning, significantly increasing the workload of cleaning the disc.

[0003] Patent No. ZL201922116816.1, published on July 31, 2020, discloses a multifunctional smoke purification device. The device includes a main body, which, from top to bottom, comprises a sterilization unit, a secondary filtration unit, a primary filtration unit, and a dust collection unit. The primary filtration unit has an air inlet on one side, and an air inlet duct is connected to the air inlet via a second fan. The dust collection unit contains a dust collection chamber and has a door on one side. The primary filtration unit contains several filter columns. The secondary filtration unit, from bottom to top, comprises a rectifier plate, a first filter plate, a second filter plate, and a third filter plate. The sterilization unit has an air outlet on one side and a sterilization device on its top. This invention integrates dust collection, smoke filtration, and smoke sterilization functions through the sterilization unit, secondary filtration unit, primary filtration unit, and dust collection unit, offering diverse functions and a wide range of applicability. This solution also suffers from drawbacks such as the lack of energy recovery considerations, resulting in low equipment heat circulation efficiency and high equipment energy consumption and emissions, which are not conducive to the current national requirements for social environmental protection and development, and are not conducive to improving the self-cleaning efficiency of the oil slinger. Summary of the Invention

[0004] This invention addresses the shortcomings of existing oil fume purification devices, such as the lack of energy recovery considerations, resulting in low heat circulation efficiency and high energy consumption and emissions. These shortcomings hinder the current national environmental protection development needs. The invention provides a method for oil-water mist circulation purification that can both intercept and purify industrial oil-water mist and oil fume waste gases, and recover the heat generated by these waste gases themselves. This improves the heat circulation efficiency of the equipment, reduces energy consumption and emissions, better meets national environmental protection development needs, and enhances the self-cleaning efficiency of the oil-slinging plate.

[0005] The specific technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: an oil-water mist circulation purification treatment method, characterized by comprising the following circulation purification treatment steps: S1. Introduce the oil, water and oil fume exhaust gas that needs to be purified into the oil, water and oil fume purification treatment device from the exhaust gas inlet port, or install the oil, water and oil fume purification treatment device in the environment or place that needs to be purified. S2. Operate the operating switch on the operating switch panel of the oil-water-oil-fume purification device to start the oil-water-oil-fume purification device. The multi-stage oil-throwing disc installed inside the oil-water-oil-fume purification device will start the oil-throwing screen to intercept and purify the work. The oil-water-oil-fume exhaust gas that needs to be purified enters the multi-stage oil-throwing disc inside the oil-water-oil-fume purification device from the exhaust gas inlet port. S3. Oil, water and oil fume exhaust gases are sequentially intercepted and purified by multiple oil-slinging discs inside the oil, water and oil fume purification and treatment device. S4. After the oil-slinging disc intercepts and purifies the gas in step S3 above, the purified gas is output from the gas outlet port to the outside of the gas outlet port. After intercepting the oil-water and oil-smoke exhaust gas, the oil-water and oil-smoke are thrown out from the outer end of the oil-slinging spokes of the oil-slinging disc body into the annular groove of the anti-escape collection tank and collected. S5. When it is necessary to perform the internal heat circulation task of oil-water-oil-fume purification treatment, operate the operation switch on the operation switch panel of the oil-water-oil-fume purification treatment device to start and open the movable door set inside the oil-water-oil-fume purification treatment device, and open the gas internal circulation channel set inside the oil-water-oil-fume purification treatment device. S6. In step S5 above, the purified gas after purification is output from the gas outlet port to the outside of the gas outlet port, and enters the gas internal circulation channel through the door installation connection window after the movable door is opened. It then circulates through the gas internal circulation channel into the inside of the exhaust gas inlet port and the air inlet area of ​​the first-stage oil slinger in the multi-stage oil slinger, forming a purified gas internal circulation that enters the multi-stage oil slinger to intercept and purify the gas. S7. In steps S5 to S6 above, when the movable door is opened, since the size of the gas internal circulation channel opening is larger than the size of the exhaust window of the oil-water-oil-fume purification device housing, under the suction of the multi-stage oil-slinging disc fan, most of the purified gas flow after purification enters the gas internal circulation channel. It then flows back from the lower outlet of the gas internal circulation channel to the exhaust gas inlet and the exhaust gas inlet at the first stage oil-slinging disc in the multi-stage oil-slinging disc. It also pushes the oil and water mist entering from the inlet of the exhaust gas before purification into the multi-stage oil-slinging disc mesh. Under the action of the centrifugal force of the high-speed rotation of the oil-slinging disc, the oil and water mist is intercepted, greatly reducing the exhaust flow and reducing the heat exhaust. S8. In step S7 above, when the purified clean gas, carrying the gas heat, circulates back from the lower outlet of the gas internal circulation channel to the multi-stage oil slinger, the clean gas carrying the gas heat maintains the overall temperature of the oil slinger, improves the fluidity and flow discharge efficiency of the droplets collected by the oil slinger after purification, and improves the cleanliness of the oil slinger spokes, thereby improving the self-cleaning efficiency of the oil slinger. S9. After executing steps S5 to S8 above, continue the loop until steps S3 to S4 above are executed.

[0006] It can intercept and purify industrial oil, water mist, and oil fumes, and also recover the heat generated by these waste gases, improving the equipment's heat circulation efficiency and reducing energy consumption and emissions. Furthermore, when the purified gas, recovered through the internal gas circulation channel, flows back to the oil slinger, the overall cleanliness of the waste gas entering the slinger is improved, and the temperature stability of the waste gas flowing through the slinger is maintained to a certain extent. This improves the fluidity and discharge efficiency of the droplets collected by the slinger, while also increasing the overall temperature of the slinger spokes. This helps prevent oil and water mist from remaining on the spokes due to low temperatures, improving the spokes' own cleanliness. The heat from the circulating airflow maintains the temperature of the collected droplets after the oil and water mist is intercepted and purified by the slinger, preventing the collected droplets from cooling and condensing, which is detrimental to discharge. This improves the self-cleaning efficiency of the slinger, better meeting the national needs for environmental protection.

[0007] Preferably, the multi-stage oil-slinging discs consist of 2 to 4 discs arranged sequentially for purification. This improves the flexibility, reliability, and effectiveness of oil mist and water mist interception and purification.

[0008] Preferably, the multi-stage oil-slinging discs in the oil-water-oil-fume purification device adopt a vertically arranged purification distribution structure from bottom to top. The gas outlet is located directly above the uppermost oil-slinging disc, and the exhaust gas inlet is located inside the lowermost oil-slinging disc, forming a vertical upward airflow purification mode for oil-water-oil-fume. This improves the heat circulation efficiency of the hot air automatically rising in the multi-stage oil-slinging discs after passing through the gas internal circulation.

[0009] Preferably, the upper end of the gas internal circulation channel is provided with a door installation and connection window, which is equipped with a movable door. The opening and closing of the movable door is controlled electrically and / or manually. This improves the simplicity and effectiveness of venting the purified gas, enhances the airflow guidance effectiveness of the gas internal circulation, and makes the opening and closing of the movable door simpler, more convenient, and more flexible.

[0010] Preferably, the oil-water-oil-fume purification device is equipped with a low-temperature plasma electric field, which is located within the gas internal circulation channel and on the inner wall region of the channel. When the purified gas passes through the gas internal circulation channel, the low-temperature plasma electric field further purifies the airflow, removing residual smoke or odors. This improves the interception and purification effect of the purified gas before it enters the multi-stage oil-slinging plate.

[0011] Preferably, the oil-water-oil-fume purification device employs a multi-stage oil-slinging disc purification structure formed by dividing the device housing into upper and lower layers of horizontal baffles. The motor and the oil-slinging disc itself are respectively mounted on two adjacent horizontal baffles, and the connection between each horizontal baffle and the housing utilizes a drawer-type pull-out sliding connection structure. This improves the ease, convenience, flexibility, and effectiveness of installation, connection, disassembly, and maintenance between the horizontal baffles and the housing.

[0012] Preferably, the transverse baffle adopts a two-part independent baffle structure, with an inner and an outer part. Each of the two independent baffles has an installation slot on its adjacent side, which is used to install and connect the motor or the rotating disc. The installation connection between each transverse baffle and the device housing is a drawer-type pull-out sliding connection. The installation connection between the two baffles and the housing involves first installing the inner part, then the motor or rotating disc, and finally the outer part. This improves the ease, convenience, flexibility, and effectiveness of installation, connection, disassembly, and maintenance between the transverse baffle and the housing, and between the transverse baffle and the motor or rotating disc.

[0013] Preferably, the device housing has a top cover with an external exhaust window. In step S3, the purified gas is output from the gas outlet port and discharged outside the housing cover through the external exhaust window. A side door is provided on the side of the housing, with an operation switch box and control panel. The control panel has an electric or manual switch for the movable door. This improves the ease and effectiveness of installing, connecting, opening, and closing the movable door. When the external exhaust window (exhaust port) is closed, a closed-loop internal circulation channel is formed. The lower end of the internal circulation channel connects to the exhaust chamber, pressurizing it and facilitating the movement of exhaust gas to the first oil-slinging plate inlet inside the exhaust port. When the external exhaust window is closed, a closed-loop circulation channel is formed, increasing the exhaust gas throughput. Due to the flow of cutting fluid, the temperature in the exhaust chamber is maintained within a set threshold.

[0014] Preferably, in steps S7 and S8 above, the exhaust window of the oil-water-oil fume purification device located on the gas outlet side is simultaneously closed while the movable door is opening. This ensures that the purified gas output from the gas outlet can enter the internal gas circulation channel through the door mounting connection window after the movable door is opened. This improves the reliability and effectiveness of guiding the purified gas into the internal gas circulation channel through the door mounting connection window after the movable door is opened.

[0015] Preferably, the door opening switch in steps S5 to S8 is activated during step S5 or during step S2. This improves the ease, flexibility, and effectiveness of door operation control.

[0016] The beneficial effects of this invention are: it can intercept and purify industrial oil, water mist, and oil fumes, and recover the heat generated by these waste gases, improving the equipment's heat circulation efficiency and reducing energy consumption and emissions; furthermore, when the heat from the purified gas recovered through the internal gas circulation channel flows to the oil-slinging disc, it improves the fluidity and discharge efficiency of the droplets collected by the disc, while also increasing the overall temperature of the oil-slinging spokes. This better prevents oil and water mist from remaining on the spokes due to low temperatures, improving the spokes' cleanliness. It also enhances the temperature maintenance of the collected droplets after oil and water mist interception and purification by the circulating airflow, preventing the collected droplets from cooling and condensing, thus improving the self-cleaning efficiency of the oil-slinging disc and better meeting the national needs for environmental protection. To a certain extent, the internal gas circulation channel creates a siphon effect on the waste gas, improving the reliability and effectiveness of the oil mist interception and purification device. Attached Figure Description The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the process structure of an oil-water mist circulation purification treatment method according to the present invention.

[0018] Figure 2 This is a schematic diagram of the exploded structure of the oil-water-oil mist purification device used in the oil-water mist circulation purification method of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of a set of transverse baffles and its oil-slinging disc drive connection structure used in the oil-water mist circulation purification treatment method of the present invention. Detailed Implementation

[0020] Example 1: Figure 1 , Figure 2 , Figure 3 In the illustrated embodiment, an oil-water mist circulation purification method includes the following circulation purification steps: S1. Introduce the oil, water and oil fume exhaust gas that needs to be purified into the oil, water and oil fume purification treatment device from the exhaust gas inlet port, or install the oil, water and oil fume purification treatment device in the environment or place that needs to be purified. S2. Operate the operation switch on the operation switch panel of the oil-water-oil-fume purification device to start the oil-water-oil-fume purification device. The multi-stage oil-throwing plate installed inside the oil-water-oil-fume purification device will start the oil-throwing screen to intercept and purify the work task. The oil-water-oil-fume exhaust gas that needs to be purified enters the multi-stage oil-throwing plate 02 inside the oil-water-oil-fume purification device from the exhaust gas inlet port. S3. Oil, water and oil fume exhaust gases are sequentially filtered and purified by multiple oil-slinging discs inside the oil, water and oil fume purification and treatment device. S4. After the purification process of the oil-slinging disc in step S3 above, the purified gas is output from the gas outlet port to the outside of the gas outlet port. After intercepting the oil, water and oil fumes in the exhaust gas, the oil, water and oil fumes are thrown out from the outer end of the oil-slinging spokes of the oil-slinging disc body into the annular groove of the anti-escape collection tank and collected. S5. When it is necessary to perform the internal heat circulation task of oil-water-oil-fume purification treatment, operate the operation switch on the operation switch panel of the oil-water-oil-fume purification treatment device to start and open the movable door set inside the oil-water-oil-fume purification treatment device, and open the gas internal circulation channel 05 set inside the oil-water-oil-fume purification treatment device. S6. In step S5 above, the purified gas after purification treatment is output from the gas outlet port to the outside of the gas outlet port, and enters the gas internal circulation channel through the door installation connection window after the movable door is opened. It then circulates through the gas internal circulation channel into the inside of the exhaust gas inlet port and the air inlet area of ​​the first stage oil slinger in the multi-stage oil slinger, forming the purified gas internal circulation entering the multi-stage oil slinger to intercept and purify the gas. S7. In steps S5 to S6 above, when the movable door is opened, since the size of the gas internal circulation channel opening is larger than the size of the exhaust window of the oil-water-oil-fume purification device housing, under the suction of the multi-stage oil-slinging plate fan, most of the purified gas flow after purification enters the gas internal circulation channel, and flows back from the lower outlet of the gas internal circulation channel to the exhaust gas inlet and the exhaust gas inlet at the first stage oil-slinging plate in the multi-stage oil-slinging plate. It also pushes the oil and water mist entering from the inlet of the exhaust gas before purification into the multi-stage oil-slinging plate mesh. Under the action of the centrifugal force of the high-speed rotation of the oil-slinging plate, the oil and water mist is intercepted and treated, greatly reducing the exhaust flow and reducing the heat exhaust. S8. In step S7 above, when the purified clean gas, carrying gas heat, flows back from the lower outlet of the gas internal circulation channel to the multi-stage oil slinger, the clean gas carrying gas heat maintains the overall temperature of the oil slinger, improves the fluidity and flow discharge efficiency of the droplets collected by the oil slinger after purification, and improves the cleanliness of the oil slinger spokes, thereby improving the self-cleaning efficiency of the oil slinger. S9. After executing steps S5 to S8 above, continue the loop until steps S3 to S4 above are executed.

[0021] The door opening switch in steps S5 to S8 above is activated when step S5 is executed, or when step S2 is executed.

[0022] The multi-stage oil-slinging discs consist of 2 to 4 discs arranged sequentially for purification. Within the oil-water-oil-fume purification device, the multi-stage oil-slinging discs are arranged vertically from bottom to top. The gas outlet 11 is located directly above the uppermost oil-slinging disc. An exhaust fan is installed at the gas outlet 11 to draw the purified air from the multi-stage oil-slinging discs and discharge it outside the gas outlet 11 (the exhaust fan is not shown separately in the figure; existing exhaust fan technologies can be used, but this should not be used as a basis for any action detrimental to the implementation of this invention). The exhaust gas inlet 51 is located inside the lowermost oil-slinging disc, forming a vertical upward airflow purification mode for oil-water-oil-fume. The upper end of the gas internal circulation channel 14 is located outside the gas outlet port 11, and the lower end of the gas internal circulation channel 14 is connected to the area outside the exhaust gas inlet port 51 and the exhaust gas inlet of the first-stage oil slinger. A through-connection channel exists between the upper end and the lower end of the gas internal circulation channel 14. When the movable door 13 is opened, the gas internal circulation channel 14 connects the area inside the exhaust gas inlet port 51 and the area outside the gas outlet port 11, forming a heat internal circulation channel where the purified gas circulates from the outside of the gas outlet port to the inlet end of the first oil slinger inside the exhaust gas inlet port (see...). Figure 1 (In the direction indicated by arrow A). A chassis base frame 50 is installed at the bottom of the chassis 10. The upper end of the chassis base frame 50 has an exhaust gas inlet port 51 that connects to the bottom end 16 of the chassis and introduces the pre-purified exhaust gas into the chassis 10 and into the first oil slinger. The exhaust gas inlet port 51 is also connected to the lower end 15 of the gas internal circulation channel while introducing the pre-purified exhaust gas into the chassis 10. The upper end of the gas internal circulation channel 14 has a door installation connection window 12. A movable door 13 is installed and connected to the door installation connection window 12. The opening and closing of the movable door 13 is controlled electrically and / or manually. The control technology for the movable door 13 by electric control and / or manual control can refer to or adopt the existing electric control and / or manual control technology for opening and closing movable doors, and will not be described in detail here.

[0023] The oil-water-oil-fume purification and treatment device adopts a multi-stage oil-slinging plate purification and treatment device structure formed by dividing the device box into upper and lower layers of horizontal baffles 20. The motor and the oil-slinging plate body that constitute the oil-slinging plate are respectively set on two adjacent horizontal baffles. The installation and connection structure between each horizontal baffle and the machine box adopts a drawer-type pull-out sliding connection structure 17.

[0024] The transverse baffle adopts a two-plate independent structure with an inner plate 22A and an outer plate 22B. Each of the two independent baffle plates has an installation slot 22C on the adjacent side area of ​​their opposite positions. The two installation slots are used to install and connect the motor or the plate body. The installation connection structure between each transverse baffle and the device housing adopts a drawer-type pull-out sliding connection structure. The installation connection between the two baffle plates and the housing adopts an inner and outer plate installation connection structure of first installing and connecting the inner plate, then installing and connecting the motor or the plate body, and then installing and connecting the outer plate. The top of the device housing 10 is equipped with a housing cover 30, which has an external exhaust window 31. In step S3, the purified gas is output from the gas outlet 11 and discharged outside the housing cover 30 through the external exhaust window. A side door 40 is installed on the side of the housing, and an operation switch box 41 and an operation switch panel 42 are installed on the side door 40. The operation switch panel 42 is equipped with an electric or manual switch 43 for the movable door. This improves the simplicity and effectiveness of venting the purified gas, enhances the airflow guidance effectiveness of the internal gas circulation, and makes the opening and closing of the movable door simpler, more convenient, and more flexible.

[0025] The multi-layered transverse baffles 20 include a set of transverse baffles consisting of a motor plate 21, a #1 oil slinger baffle, a #2 oil slinger baffle, and a bearing seat plate. Each set of transverse baffles is used to install two synchronously rotating oil slingers 60A and 60B, driven and controlled by a motor 70 (motor power line 71) and a rotating bearing 80. The rotating bearing and the two synchronously rotating oil slingers are connected and mounted on the same motor drive output shaft. This improves the driving, use, installation, stability, reliability, simplicity, and effectiveness of the oil slingers. Both the #1 and #2 oil slinger baffles 22 adopt an oil slinger baffle structure (an oil slinger baffle structure composed of two independent baffles, an inner baffle 22A and an outer baffle 22B). The #1 oil slinger baffle is used to install and connect the #1 oil slinger 60A, and the #2 oil slinger baffle is used to install and connect the #2 oil slinger 60B (see...). Figure 2 The transverse baffle adopts a two-plate independent structure consisting of an inner plate 22A and an outer plate 22B (see...). Figure 2The inner partition plate is located inside the inner area of ​​the device housing, and the outer partition plate is located inside the outer area of ​​the device housing. Each of the two independent partition plates has an installation slot 22C on its adjacent side at its opposite position. The two installation slots 22C are used together to install and connect the motor or the suspended discs 60A and 60B. The installation connection structure between each transverse partition plate and the device housing adopts a drawer-type pull-out sliding connection structure, improving the simplicity, convenience, flexibility, and effectiveness of installation, connection, disassembly, and maintenance between the transverse partition plate and the housing. The installation connection between the inner partition plate 22A and the outer partition plate 22B and the housing adopts an inner-outer partition plate installation connection structure: first install and connect the inner partition plate 22A, then install and connect the suspended discs 60A and 60B, and finally install and connect the outer partition plate 22B. This improves the simplicity, convenience, flexibility, and effectiveness of installation, connection, disassembly, and maintenance between the transverse partition plate and the housing, and between the transverse partition plate and the motor or suspended disc. When the transverse baffle is used as a motor connection baffle for mounting and connecting a motor, the motor connection baffle 21 (or when it is also used as a bearing housing baffle) is provided with a plurality of baffle through holes 211. The plurality of baffle through holes 211 are arranged in a ring structure on the motor connection baffle, and each baffle through hole has a fan-shaped structure. This improves the smooth, reliable and effective flow of gas through the motor plate 21 for mounting and connecting the motor.

[0026] The oil slinger technology in the multi-stage oil slinger can adopt the technical solutions already applied for by the applicant: an anti-escape oil slinger, an oil slinger device and its anti-escape method, and an anti-collision escape interception oil slinger and its anti-collision escape interception oil slinger device. The applicant will not provide a separate detailed description of the oil slinger technology here.

[0027] The clean airflow after being treated by the multi-stage oil slinger is discharged into the atmosphere from the shell outlet when the movable door is closed (the circulation channel is closed), achieving unorganized emission. When the movable door is open, the circulation channel and the outlet are opened simultaneously. Since the circulation opening is larger than the shell outlet, most of the treated airflow enters the circulation channel under the suction of the fan, flows back to the shell inlet from the lower outlet of the circulation channel, and pushes the oil and water mist entering the shell inlet into the mesh plate. Under the action of centrifugal force (Coriolis force), the oil and water mist is treated. This can significantly reduce the external exhaust flow and also reduce the external heat loss. Example 2: Figure 1 , Figure 2 , Figure 3In the illustrated embodiment, a low-temperature plasma electric field is installed within the oil-water-oil fume purification device. This low-temperature plasma electric field is located within the gas internal circulation channel, specifically on the inner wall region of the channel. As the purified gas passes through the gas internal circulation channel, the low-temperature plasma electric field further purifies the airflow, removing any residual smoke or odor. The low-temperature plasma electric field technology can adopt or borrow from existing plasma electric field technologies; therefore, the applicant will not provide a separate detailed description of the plasma electric field technology here. Everything else is the same as in Embodiment 1.

[0028] Example 3: Figure 1 , Figure 2 , Figure 3 In the illustrated embodiment, during steps S7-S8, as the movable door 13 opens, the external exhaust window 31 of the oil-water-oil-fume purification device located on the gas outlet port 11 side also closes simultaneously. This ensures that the purified gas output from the gas outlet port can enter the gas internal circulation channel through the door installation connection window after the movable door opens. Other aspects are the same as in Embodiments 1 and 2. When the external exhaust window (exhaust port) is closed, a closed-loop internal circulation channel is formed. The lower end of the gas internal circulation channel connects to the waste gas chamber, pressurizing the waste gas chamber and facilitating the movement of waste gas to the first oil-slinging plate inlet end inside the waste gas inlet port. When the external exhaust window is closed, a closed-loop circulation channel is formed, increasing the waste gas processing capacity. Due to the flow of cutting fluid, the temperature in the waste gas chamber can be maintained within a set threshold.

[0029] This invention is not limited to the specific embodiments described above, and may also have other structural embodiments, such as: arranging the multi-stage oil-slinging discs in a horizontally arranged purification distribution structure from left to right within the oil-water-oil-fume purification treatment device, all of which fall within the protection scope of this invention.

[0030] In the description of positional relationships in this invention, terms such as "inner," "outer," "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] The above content and structure describe the basic principles, main features, and advantages of the product of this invention, which should be understood by those skilled in the art. The examples and descriptions above are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A method for circulating and purifying oil-water mist, characterized in that, The process includes the following cyclical purification steps: S1. Introduce the oil, water and oil fume exhaust gas that needs to be purified into the oil, water and oil fume purification treatment device from the exhaust gas inlet port, or install the oil, water and oil fume purification treatment device in the environment or place that needs to be purified. S2. Operate the operating switch on the operating switch panel of the oil-water-oil-fume purification device to start the oil-water-oil-fume purification device. The multi-stage oil-throwing disc installed inside the oil-water-oil-fume purification device will start the oil-throwing screen to intercept and purify the work. The oil-water-oil-fume exhaust gas that needs to be purified enters the multi-stage oil-throwing disc inside the oil-water-oil-fume purification device from the exhaust gas inlet port. S3. Oil, water and oil fume exhaust gases are sequentially intercepted and purified by multiple oil-slinging discs inside the oil, water and oil fume purification and treatment device. S4. After the oil-slinging disc intercepts and purifies the gas in step S3 above, the purified gas is output from the gas outlet port to the outside of the gas outlet port. After intercepting the oil-water and oil-smoke exhaust gas, the oil-water and oil-smoke are thrown out from the outer end of the oil-slinging spokes of the oil-slinging disc body into the annular groove of the anti-escape collection tank and collected. S5. When it is necessary to perform the internal heat circulation task of oil-water-oil-fume purification treatment, operate the operation switch on the operation switch panel of the oil-water-oil-fume purification treatment device to start and open the movable door set inside the oil-water-oil-fume purification treatment device, and open the gas internal circulation channel set inside the oil-water-oil-fume purification treatment device. S6. In step S5 above, the purified gas after purification is output from the gas outlet port to the outside of the gas outlet port, and enters the gas internal circulation channel through the door installation connection window after the movable door is opened. It then circulates through the gas internal circulation channel into the inside of the exhaust gas inlet port and the air inlet area of ​​the first-stage oil slinger in the multi-stage oil slinger, forming a purified gas internal circulation that enters the multi-stage oil slinger to intercept and purify the gas. S7. In steps S5 to S6 above, when the movable door is opened, since the size of the gas internal circulation channel opening is larger than the size of the exhaust window of the oil-water-oil-fume purification device housing, under the suction of the multi-stage oil-slinging disc fan, most of the purified gas flow after purification enters the gas internal circulation channel. It then flows back from the lower outlet of the gas internal circulation channel to the exhaust gas inlet and the exhaust gas inlet at the first stage oil-slinging disc in the multi-stage oil-slinging disc. It also pushes the oil and water mist entering from the inlet of the exhaust gas before purification into the multi-stage oil-slinging disc mesh. Under the action of the centrifugal force of the high-speed rotation of the oil-slinging disc, the oil and water mist is intercepted, greatly reducing the exhaust flow and reducing the heat exhaust. S8. In step S7 above, when the purified clean gas, carrying the gas heat, circulates back from the lower outlet of the gas internal circulation channel to the multi-stage oil slinger, the clean gas carrying the gas heat maintains the overall temperature of the oil slinger, improves the fluidity and flow discharge efficiency of the droplets collected by the oil slinger after purification, and improves the cleanliness of the oil slinger spokes, thereby improving the self-cleaning efficiency of the oil slinger. S9. After executing steps S5 to S8 above, continue the loop until steps S3 to S4 above are executed.

2. The oil-water mist circulation purification treatment method according to claim 1, characterized in that: The multi-stage oil-slinging discs are composed of 2 to 4 discs arranged sequentially for purification.

3. The oil-water mist circulation purification treatment method according to claim 1, characterized in that: The multi-stage oil-slinging discs in the oil-water-oil-fume purification device adopt a vertically arranged purification distribution structure from bottom to top. The gas outlet is located directly above the uppermost oil-slinging disc, and the exhaust gas inlet is located inside the lowermost oil-slinging disc, forming a vertical upward airflow purification treatment mode for oil-water-oil-fume.

4. The oil-water mist circulation purification treatment method according to claim 1, characterized in that: The upper end of the gas internal circulation channel is provided with a door installation and connection window, and the door installation and connection window is provided with a movable door. The opening or closing of the movable door is controlled by electric and / or manual control.

5. The oil-water mist circulation purification treatment method according to claim 1, characterized in that: The oil-water-oil-fume purification device is equipped with a low-temperature plasma electric field, which is located in the gas internal circulation channel and in the inner side wall area of ​​the gas internal circulation channel. When the purified gas passes through the gas internal circulation channel after purification, the low-temperature plasma electric field further purifies the airflow passing through the electric field to remove residual smoke or odor in the airflow.

6. The oil-water mist circulation purification treatment method according to claim 1, characterized in that: The oil-water-oil-fume purification device adopts a multi-stage oil-slinging plate purification device structure formed by dividing the device box into upper and lower layers of horizontal baffles. The motor and the oil-slinging plate body that constitute the oil-slinging plate are respectively set on two adjacent horizontal baffles. The installation connection structure between each horizontal baffle and the machine box adopts a drawer-type pull-out sliding connection structure.

7. The oil-water mist circulation purification treatment method according to claim 6, characterized in that: The horizontal baffle adopts a two-part independent baffle structure, with an inner part and an outer part. Each of the two independent baffles has an installation slot on its adjacent side at its opposite position. The two installation slots are used to install and connect the motor or the plate. The installation connection structure between each horizontal baffle and the device housing adopts a drawer-type pull-out sliding connection structure. The installation connection between the two baffles and the housing adopts an inner and outer baffle installation connection structure, in which the inner part is installed first, then the motor or the plate is installed, and then the outer part is installed.

8. The oil-water mist circulation purification treatment method according to claim 1, characterized in that: The device housing has a top cover, which has an external exhaust window. In step S3, the purified gas is output from the gas outlet port to the outside of the gas outlet port and discharged from the external exhaust window to the outside of the top cover. The side of the housing has a side door, which has an operation switch box and an operation switch panel. The operation switch panel has an electric switch or a manual switch for the movable door.

9. The oil-water mist circulation purification treatment method according to claim 1, characterized in that: In steps S7 to S8 above, while the movable door is opened, the exhaust window of the oil-water-oil-fume purification device located on the gas outlet side is also closed simultaneously to ensure that the purified gas output from the gas outlet can enter the gas internal circulation channel through the door installation connection window after the movable door is opened.

10. The oil-water mist circulation purification treatment method according to claim 1, characterized in that: The door opening switch in steps S5 to S8 above is activated when step S5 is executed, or when step S2 is executed.

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