An oil mist purification apparatus

Abstract

This utility model belongs to the technical field of gas purification devices and discloses an oil mist purification device, which includes a cabinet with an air inlet pipe at the bottom and an air outlet at the top. It also includes a three-stage purification system and a self-cleaning circulation system installed inside the cabinet. The three-stage purification system, from bottom to top, includes a primary filter, an electrostatic adsorption module, and a high-efficiency filter module. The self-cleaning circulation system includes a spray assembly and a water tank assembly. The spray assembly is used to spray and clean the electrostatic adsorption module. The water tank assembly is used to store and supply cleaning water and collect and discharge cleaning wastewater. The water tank assembly is equipped with a heating device for heating the cleaning water. This utility model's device can automatically clean the electrostatic adsorption module, removing accumulated oil stains from its surface, ensuring the adsorption effect of the electrostatic adsorption module, extending the service life of the equipment, and reducing manual maintenance costs.

Description

Technical Field

[0001] This utility model relates to the technical field of gas purification devices, specifically to an oil mist purification device. Background Technology

[0002] With the acceleration of industrialization and the increase in urbanization, industrial production activities have shown a vigorous development trend. However, while creating huge economic benefits, industrial production has also brought about environmental and human health problems that cannot be ignored, among which oil mist pollution generated during industrial production is particularly prominent. In many industrial sectors, processing workshops in machinery, chemicals, biology, and medicine are the hardest hit areas for oil mist pollution, as various industrial equipment generates oil mist of different properties during operation. In the machining field, machine tools, represented by CNC machine tools and grinding machines, atomize metal cutting fluids, emulsions, and synthetic coolants during metal cutting; lubricants and cleaning fluids in milling and turning machines also form oil mist during operation. In the chemical industry, equipment such as drying, evaporation, tower, and extraction processes atomize raw materials and auxiliary materials. In pharmaceutical processing, equipment such as pulverizers, screening machines, mixers, dryers, and packaging machines also generate atomization of raw materials and auxiliary materials.

[0003] Oil mist generated by industrial equipment during operation permeates the workshop air, causing serious adverse effects on personnel and the environment. It not only adheres to the ground, posing a risk of slipping and falling, but also corrodes the electrical systems and precision components of machinery, leading to malfunctions in these systems and reducing equipment reliability. Workers exposed to oil mist for extended periods are more prone to respiratory illnesses, skin inflammation, and other health problems. With increasingly stringent environmental regulations and growing awareness of employee health management among businesses, oil mist purification equipment has become an essential facility in industrial workshops.

[0004] Currently, common oil mist purification equipment mainly adopts the following solutions:

[0005] 1. Centrifugal Separation Purification Equipment: This type of equipment uses a high-speed rotating impeller to generate strong centrifugal force, separating large oil mist particles from the airflow and converting them into a liquid state. The remaining small oil mist particles are then intercepted by a multi-stage filtration system. However, this type of equipment is not efficient enough at retaining ultrafine oil mist particles smaller than 3μm, requiring subsequent filtration methods to further improve the purification effect. This not only increases the complexity and cost of the equipment but may also fail to fully meet the stringent requirements for oil mist purification.

[0006] 2. Multi-stage mechanical filtration equipment: Multi-stage mechanical filtration equipment mainly relies on multiple filter stages (including pre-filters, medium-efficiency filters, and high-efficiency filters) to gradually intercept oil mist particles. Its working principle is to separate pollutants from the airflow using inertial impaction and filter media adsorption. However, in practical applications, the filter media is prone to clogging and requires frequent replacement. This not only increases the maintenance cost of the equipment but also leads to increased fan energy consumption, which may in turn affect the overall system operating efficiency.

[0007] 3. Electrostatic Separation Oil Mist Purification Device: To overcome the shortcomings of the two devices mentioned above, oil mist purification devices with electrostatic separation capabilities have emerged on the market. These devices utilize an electrostatic field to charge oil mist particles, which are then adsorbed by electrodes, thus purifying the oil mist. However, these devices also have certain problems. The adsorbed particles easily clog the device, especially when dealing with high-concentration oil mist; moreover, once the particles solidify, cleaning becomes extremely difficult, which not only affects the purification effect but also increases the difficulty and cost of equipment maintenance.

[0008] Based on the above analysis, it is evident that existing oil mist purification equipment has certain limitations in treating industrial oil mist pollution, failing to meet the demands of industrial production for efficient, stable, and low-maintenance oil mist purification. Therefore, improving oil mist purification equipment is of significant practical importance. Utility Model Content

[0009] The purpose of this invention is to provide an oil mist purification device that solves at least one technical problem mentioned in the background art, such as automatically cleaning the electrostatic adsorption module to remove the oil stains accumulated on its surface and ensure the adsorption effect of the electrostatic adsorption module.

[0010] To achieve the above objectives, this utility model proposes an oil mist purification device, including a cabinet with an air inlet pipe at the bottom and an air outlet at the top; it also includes a three-stage purification system and a self-cleaning circulation system installed inside the cabinet; the three-stage purification system includes, from bottom to top, a primary filter, an electrostatic adsorption module and a high-efficiency filter module.

[0011] The self-cleaning circulation system includes a spray assembly and a water tank assembly. The spray assembly is located between the electrostatic adsorption module and the high-efficiency filter module and is used to spray and clean the electrostatic adsorption module. The water tank assembly is located at the bottom of the cabinet cavity and is used to store and supply cleaning water, and collect and discharge cleaning wastewater. The water tank assembly is equipped with a heating device for heating the cleaning water.

[0012] The working principle of this invention is as follows: Oil-mist-laden exhaust gas is introduced into the cabinet through the air inlet at the end of the air inlet pipe via an external duct. Since an air outlet is located at the top of the cabinet, the exhaust gas forms an upward airflow path within the cabinet. Specifically, the exhaust gas first passes through a primary filter, which initially intercepts larger particles of oil mist, dust, and other impurities, providing preliminary purification. After passing through the primary filter, the exhaust gas continues to rise and enters the electrostatic adsorption module. This module utilizes electrostatic principles to charge the oil mist particles in the exhaust gas, which are then adsorbed onto the electrode plates under the influence of an electric field, further removing the oil mist. Finally, the exhaust gas reaches the high-efficiency filtration module, which filters out residual fine particles and harmful substances, ensuring a high level of cleanliness in the discharged air.

[0013] During the above process, after the equipment has been running for a period of time, a certain amount of oil will accumulate on the electrostatic adsorption module, affecting its adsorption effect. At this time, the self-cleaning circulation system starts working. The spray assembly starts to spray and clean the electrostatic adsorption module, and the cleaning water comes from the water tank assembly. The wastewater after cleaning is collected in the water tank assembly and discharged through it. At the same time, the water tank assembly is equipped with a heating device, which can heat the cleaning water. The heated water can better dissolve the oil and improve the cleaning effect.

[0014] Furthermore, the spray assembly includes a distribution pipe, a transmission mechanism, and a guide rail; the distribution pipe is slidably connected to the guide rail, and both the transmission mechanism and the guide rail are fixedly connected to the cabinet. The transmission mechanism cooperates with the distribution pipe to drive the distribution pipe to move horizontally along the guide rail; the distribution pipe is also equipped with several nozzles for spraying cleaning water onto the electrostatic adsorption module.

[0015] Furthermore, the water tank assembly includes a clean water tank and a wastewater tank; the clean water tank is used to store cleaning water, a heating device is installed inside the clean water tank, and a first liquid level sensor and a temperature sensor are also installed on the clean water tank; the wastewater tank is used to collect and discharge cleaning wastewater, and a second liquid level sensor is provided.

[0016] Furthermore, the clean water tank and the wastewater tank are a single-piece double-tank structure, with the upper surface of the clean water tank and the bottom surface of the wastewater tank both inclined, and the wastewater tank located on the lower side of the clean water tank; the upper surface of the clean water tank is equipped with a sealing cover, while the upper surface of the wastewater tank is an open structure.

[0017] Furthermore, it also includes a water inlet pipe, a drain pipe, and a sewage pipe, with the water inlet pipe and the drain pipe passing through the cabinet and connecting to the clean water tank, and the sewage pipe passing through the cabinet and connecting to the sewage tank.

[0018] Furthermore, a fan is installed between the spray assembly and the high-efficiency filter module.

[0019] Furthermore, the high-efficiency filter module has a filter structure with two or more layers, and at least one layer is a high-efficiency filter, while the rest are high-efficiency filters or chemical filters.

[0020] Furthermore, the cabinet is equipped with a first support leg at the bottom and a second support leg at the bottom of the air inlet pipe.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. The three-stage purification system of this utility model, combined with the self-cleaning circulation system, can automatically clean the electrostatic adsorption module, remove the oil stains accumulated on its surface, ensure the adsorption effect of the electrostatic adsorption module, extend the service life of the equipment, and reduce manual maintenance costs.

[0023] 2. This utility model has a heating device on the water tank assembly, which can heat the cleaning water. The heated water can better dissolve oil stains, improve the cleaning effect, and make the electrostatic adsorption module more thorough in cleaning.

[0024] 3. This utility model's three-stage purification system, through the synergistic effect of a primary filter, an electrostatic adsorption module, and a high-efficiency filtration module, can effectively remove impurities such as oil mist and dust from exhaust gas. It has high purification efficiency and can ensure that the discharged air reaches a high level of cleanliness, meeting environmental protection requirements. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0027] Figure 2 yes Figure 1 A schematic diagram of the overall structure from another perspective.

[0028] Figure 3 yes Figure 1 Another perspective on the overall structure.

[0029] Figure 4 This is a schematic diagram of the right-side structure of this utility model after removing the outer shell of the right-side cabinet.

[0030] Figure 5 This is a schematic diagram of the right-side structure of this utility model after removing the outer shell of the left-side cabinet.

[0031] Figure 6This is a schematic diagram showing the positional relationship between the spray assembly and the water tank assembly.

[0032] Figure 7 This is a structural diagram of a water tank assembly.

[0033] Figure 8 yes Figure 7 A schematic diagram of the structure after removing the sealing cover.

[0034] In the diagram: 1. Cabinet; 2. Air inlet duct; 3. Air outlet; 4. Primary filter; 5. Electrostatic adsorption module; 6. High-efficiency filter module; 7. Liquid distribution pipe; 8. Guide rail; 9. Water tank assembly; 10. Heating device; 11. Nozzle; 12. First liquid level sensor; 13. Temperature sensor; 14. Second liquid level sensor; 15. Sealing cover; 16. Water inlet pipe; 17. Drain pipe; 18. Sewage pipe; 19. Fan; 20. First support leg; 21. Second support leg; 22. Water pump; 23. High-pressure hose; 24. Hose connector; 25. Strip-shaped heat dissipation vent; 26. Lead screw; 27. Connector; 28. Waterproof connector; 29. ​​First electrical control cabinet; 30. Second electrical control cabinet; 31. Third electrical control cabinet; 32. Lifting lug; 33. Water inlet hose; 901. Clean water tank; 902. Sewage tank. Detailed Implementation

[0035] The illustrated embodiments are provided to better illustrate the present invention, but the content of the present invention is not limited to the illustrated embodiments. Therefore, non-essential improvements and adjustments made to the implementation schemes by those skilled in the art based on the above-described content of the present invention still fall within the protection scope of the present invention.

[0036] like Figures 1 to 8 As shown, an oil mist purification device includes a cabinet 1, with an air inlet pipe 2 at the bottom and an air outlet 3 at the top; it also includes a three-stage purification system and a self-cleaning circulation system installed inside the cabinet 1; the three-stage purification system includes, from bottom to top, a primary filter 4, an electrostatic adsorption module 5, and a high-efficiency filter module 6.

[0037] The self-cleaning circulation system includes a spray assembly and a water tank assembly 9. The spray assembly is located between the electrostatic adsorption module 5 and the high-efficiency filter module 6 and is used to spray and clean the electrostatic adsorption module 5. The water tank assembly 9 is located at the bottom of the inner cavity of the cabinet 1 and is used to store and supply cleaning water and collect and discharge cleaning wastewater. The water tank assembly 9 is equipped with a heating device 10 for heating the cleaning water.

[0038] The cabinet 1 of this utility model adopts a vertical sheet metal box structure. The main body is composed of a frame and several sealing plates and inspection doors, forming a sealed purification chamber. Sealing rings can be installed at all joints of the sealing plates and inspection doors to ensure the airtightness and prevent oil leakage, thus avoiding environmental pollution caused by exhaust gas leakage and oil stains. The air inlet duct 2 is located at the lower part of the front of the cabinet 1. The air inlet at the end of the air inlet duct 2 connects to an external air duct to introduce oil-mist-containing exhaust gas. The air outlet 3 is located at the top of the cabinet 1 and can be connected to an external air duct using a flange to discharge purified clean air, forming an upward airflow path. During operation, the oil-mist-containing exhaust gas is introduced into the cabinet 1 through the air inlet at the end of the air inlet duct 2 via the external air duct. Because the air outlet 3 is located at the top of the cabinet 1, the exhaust gas forms an upward airflow path within the cabinet 1, which facilitates full contact between the exhaust gas and each level of purification modules within the cabinet 1, improving the purification effect. To further improve efficiency, a fan 19 is also installed between the spray assembly and the high-efficiency filter module 6.

[0039] The specific working process of this utility model is as follows: The exhaust gas first passes through the primary filter 4, which can initially intercept larger particles of oil mist, dust, and other impurities in the exhaust gas, playing a preliminary purification role. After passing through the primary filter 4, the exhaust gas continues to rise and enters the electrostatic adsorption module 5. The electrostatic adsorption module 5 uses the principle of electrostatics to charge the oil mist particles in the exhaust gas, and then they are adsorbed onto the electrode plates under the action of electric field force, further removing the oil mist in the exhaust gas. Finally, the exhaust gas reaches the high-efficiency filtration module 6, which can filter out residual tiny particles and harmful substances in the exhaust gas, ensuring that the discharged air reaches a high level of cleanliness.

[0040] During the above process, after the equipment has been running for a period of time, a certain amount of oil will accumulate on the electrostatic adsorption module 5, affecting its adsorption effect. At this time, the self-cleaning circulation system starts working. The spray assembly starts to spray and clean the electrostatic adsorption module 5, and the cleaning water comes from the water tank assembly 9. The wastewater after cleaning is collected in the water tank assembly 9 and discharged through the water tank assembly 9. At the same time, the water tank assembly 9 is equipped with a heating device 10, which can heat the cleaning water. The heated water can better dissolve the oil, improve the cleaning effect, and make the cleaning of the electrostatic adsorption module 5 more thorough.

[0041] This invention employs a three-stage purification system. Through the synergistic action of the primary filter 4, the electrostatic adsorption module 5, and the high-efficiency filter module 6, it effectively removes impurities such as oil mist and dust from exhaust gas, achieving high purification efficiency and ensuring that the discharged air reaches a high level of cleanliness, meeting environmental protection requirements. The three-stage purification system, combined with a self-cleaning circulation system, automatically cleans the electrostatic adsorption module 5, removing accumulated oil stains from its surface, ensuring the adsorption effect of the electrostatic adsorption module 5, extending the service life of the equipment, and reducing manual maintenance costs.

[0042] like Figure 5 and Figure 6 As shown, in this utility model, the spray assembly includes a liquid distribution pipe 7, a transmission mechanism, and a guide rail 8; the liquid distribution pipe 7 is slidably connected to the guide rail 8, and the transmission mechanism and the guide rail 8 are both fixedly connected to the cabinet 1, and the transmission mechanism cooperates with the liquid distribution pipe 7 to drive the liquid distribution pipe 7 to move horizontally along the guide rail 8; the liquid distribution pipe 7 is also provided with a number of nozzles 11 for spraying cleaning water onto the electrostatic adsorption module 5.

[0043] In this invention, the dispensing pipe 7 is made of stainless steel. Its length, the number and distribution of nozzles 11, and the length of the guide rail 8 can be designed according to the internal space of the cabinet 1 and the actual size of the electrostatic adsorption module 5, which can meet the needs of oil mist purification equipment of different specifications and improve the versatility and adaptability of the equipment. The inside of the pipe is hollow to transport cleaning water. Several nozzle 11 mounting holes are evenly distributed on the pipe, and the nozzles 11 are fixed to the mounting holes by threaded connections. Both ends of the dispensing pipe 7 are slidably connected to the guide rail 8 by sliders. The sliders have grooves inside that match the guide rail 8, allowing the dispensing pipe 7 to slide smoothly on the guide rail 8. One end of the dispensing pipe 7 is connected to the outlet of the water pump 22 in the water tank assembly 9 through a high-pressure hose 23. The high-pressure hose 23 is made of pressure-resistant rubber, and its length is determined according to the distance between the dispensing pipe 7 and the water pump 22 to realize the transportation of cleaning water.

[0044] In one embodiment of this utility model, the transmission mechanism is a commonly used stepper motor. The stepper motor is connected to the input shaft of the reducer via a flexible coupling, and the output shaft of the reducer is also connected to one end of the lead screw 26 via a flexible coupling. A nut is provided on the lead screw 26, and the nut is fixedly connected to the dispensing pipe 7. The two ends of the dispensing pipe 7 are fixed to the slider by welding or threaded connection. The slider has a groove inside that matches the guide rail 8, allowing the dispensing pipe 7 to slide smoothly on the guide rail 8.

[0045] When cleaning of the electrostatic adsorption module 5 is required, the external control system sends a pulse signal to the stepper motor driver. Upon receiving the pulse signal, the stepper motor driver rotates according to a set distance and direction, and the rotational power is transmitted to the reducer via a flexible coupling. The rotation of the reducer's output shaft drives the lead screw 26 to rotate via the flexible coupling, and the rotational motion of the lead screw 26 is converted into the linear motion of the nut. Since the nut and the distribution pipe 7 are fixedly connected by a connector, the distribution pipe 7 moves horizontally along the guide rail 8 as the nut moves. Simultaneously with the movement of the distribution pipe 7, the water pump 22 in the water tank assembly 9 starts, delivering cleaning water to the distribution pipe 7 through a high-pressure hose 23. The nozzle 11 on the distribution pipe 7 sprays the cleaning water evenly onto the electrostatic adsorption module 5, cleaning it. As the distribution pipe 7 moves horizontally, the nozzle 11 can cover the entire surface of the electrostatic adsorption module 5, achieving thorough cleaning.

[0046] like Figures 5 to 8As shown, the water tank assembly 9 includes a clean water tank 901 and a wastewater tank 902. The clean water tank 901 is used to store cleaning water, and a heating device 10 is installed inside the clean water tank 901. A first liquid level sensor 12 and a temperature sensor 13 are also installed on the clean water tank 901. The wastewater tank 902 is used to collect and discharge cleaning wastewater and is equipped with a second liquid level sensor 14. It also includes an inlet pipe 16, a drain pipe 17, and a sewage pipe 18. The inlet pipe 16 and the drain pipe 17 pass through the cabinet 1 and are connected to the clean water tank 901. The sewage pipe 18 passes through the cabinet 1 and is connected to the wastewater tank 902. The clean water tank 901 and the wastewater tank 902 are integrally formed double-tank structures. The upper surface of the clean water tank 901 and the bottom surface of the wastewater tank 902 are both inclined, and the wastewater tank 902 is located on the lower side of the clean water tank 901. The upper surface of the clean water tank 901 is equipped with a sealing cover plate 15, and the upper surface of the wastewater tank 902 is an open structure.

[0047] A water pump 22 and a high-pressure hose 23 are located at position 901 of the clean water tank. The two ends of the high-pressure hose 23 are connected to the water pump 22 and the distribution pipe 7, respectively. It also includes an inlet hose 33, one end of which is connected to the distribution pipe 7, and the other end has a hose connector 24 for connecting to the high-pressure hose 23. (Specific details are as follows...) Figure 6 As shown (for ease of demonstrating component structure), Figure 6 The intermediate hose connector 24 and the high-pressure hose 23 are not actually connected; they are only considered to be in a positional relationship. During self-cleaning, the water pump 22 draws hot water from the clean water tank 901, which is then used to rinse the oil stains on the electrostatic adsorption module 5 through the nozzle 11. The wastewater flows into the wastewater tank 902 and is discharged.

[0048] The inclined upper surface of the clean water tank 901 of this invention facilitates the smooth flow of water dripping onto its surface (mainly cleaning wastewater from rinsing the electrostatic adsorption module 5) into the wastewater tank 902. The inclined bottom surface of the wastewater tank 902 facilitates wastewater discharge, preventing water accumulation and improving equipment operating efficiency. Both the clean water tank 901 and the wastewater tank 902 have an inclination angle of 3°-10°. The upper surface of the clean water tank 901 is equipped with a sealing cover 15, which is connected to the edge of the clean water tank 901 via hinges, allowing for easy opening for cleaning and maintenance. A sealing strip is provided on the edge of the cover to prevent moisture leakage. The upper surface of the wastewater tank 902 has an open structure, facilitating the collection of cleaning wastewater. The clean water tank 901 and wastewater tank 902 adopt an integrated double-tank structure, reducing the space occupied by the equipment and making the internal structure of the cabinet 1 more compact, facilitating installation and maintenance.

[0049] The heating device 10 uses a stainless steel electric heating tube, which can be fixed to the side wall of the clean water tank 901 via a flange. A sealing gasket is used to seal the flange and the clean water tank 901 to prevent leakage. The power cord of the heating tube is led out of the cabinet 1 through a waterproof connector 28 and connected to an external power source. The first liquid level sensor 12 and the second liquid level sensor 14 are common liquid level sensors in the prior art, such as float-type liquid level sensors. A float-type liquid level sensor consists of a float, a connecting rod, and a sensor body. The float can float up and down with changes in liquid level, and the liquid level signal is transmitted to the sensor body through the connecting rod. One end of the inlet pipe 16 and the outlet pipe 17 are connected to the clean water tank 901, and the other end passes through the cabinet 1 to connect to an external water source or drainage facility as needed. One end of the drain pipe 18 is connected to the sewage tank 902, and the other end passes through the cabinet 1 to connect to an external sewage discharge system. Rubber sealing rings are used to seal the points where the inlet pipe 16, outlet pipe 17, and drain pipe 18 penetrate the cabinet 1 to prevent leakage.

[0050] During operation, external cleaning water enters the clean water tank 901 through the inlet pipe 16. When the water level reaches the upper limit set by the first liquid level sensor 12, the sensor transmits a signal to the control system, which then closes the valve of the inlet pipe 16 to stop water intake. When the first liquid level sensor 12 detects that the liquid level in the clean water tank 901 is too high, excess liquid is removed through the drain pipe 17. The heating device 10 operates based on the water temperature detected by the temperature sensor 13. When the water temperature is lower than the set value, the heating device 10 starts to heat the cleaning water in the clean water tank 901. When the water temperature reaches the set value, the heating device 10 stops working to maintain a stable water temperature. During the cleaning process, cleaning wastewater flows from the electrostatic adsorption module 5 into the sewage tank 902. When the water level in the sewage tank 902 reaches the upper limit set by the second liquid level sensor 14, the sensor transmits a signal to the control system, which then opens the drain pipe 18 valve to discharge the sewage. As wastewater is discharged, the water level drops. When the water level falls below the lower limit set by the second level sensor 14, the sensor sends a signal to the control system again. The control system then closes the drain pipe 18 valve to stop drainage. When the water level in the clean water tank 901 falls below the lower limit set by the first level sensor 12 due to the consumption of cleaning water, the sensor sends a signal to the control system. The control system then opens the inlet pipe 16 valve to replenish cleaning water until the water level reaches the upper limit.

[0051] In the utility model, the high-efficiency filter module 6 has a filter structure with two or more layers, and at least one layer is a high-efficiency filter, while the rest are high-efficiency filters or chemical filters.

[0052] In a preferred embodiment of this invention, the high-efficiency filtration module 6 preferably has two layers: a lower high-efficiency filter and an upper chemical filter. The high-efficiency filter uses glass fiber filter paper as the filter material, which has high filtration efficiency, low resistance, and good dust holding capacity. The chemical filter uses a mixture of activated carbon and chemical adsorbents as the filter material. Activated carbon has a strong adsorption capacity and can adsorb harmful gases and odors in the gas. The gas, after being treated by the electrostatic adsorption module 5, enters the high-efficiency filtration module 6. First, the air passes through the high-efficiency filter layer, where the glass fiber filter paper intercepts fine particulate matter such as dust and smoke. Then, the air continues upward into the chemical filter, where activated carbon and chemical adsorbents adsorb harmful gases and odors. After multiple layers of further purification and treatment of the air, clean, odorless air is finally discharged.

[0053] The utility model also includes an electrical control module for controlling the spraying cycle, water temperature, and monitoring and controlling the equipment's operating status.

[0054] The electrical control module of this utility model includes a first electrical control cabinet 29, a second electrical control cabinet 30, and a third electrical control cabinet 31. The first and second electrical control cabinets 29 and 30 are symmetrically arranged on the left and right sides of the cabinet body 1, and each cabinet has a strip-shaped heat dissipation vent 25 to ensure controllable temperature rise of electrical components. The third electrical control cabinet 31 is located on the cabinet body 1 at the corresponding position of the spray assembly. The electrical control module of this utility model is mainly used for real-time monitoring of air pressure, temperature, and water level, while the heat dissipation vents maintain the internal temperature of the cabinet.

[0055] Dividing the electrical control module into three electrical control cabinets and setting them in different positions on cabinet 1 can make the layout of electrical components more reasonable and facilitate the installation, debugging and maintenance by operators.

[0056] The first electrical control cabinet 29 is equipped with several differential pressure sensors to monitor the pressure difference between the air inlet side of the primary filter 4 and the air outlet side of the electrostatic adsorption module 5, as well as the two sides of the high-efficiency filter in real time. If the pressure difference exceeds the preset value, maintenance is prompted or cleaning is triggered. A connector 27 is located on the outside of the first electrical control cabinet 29, which centrally connects to the electrical control signal and power supply to realize automatic control of the fan 19 speed, spray cycle, and pressure difference linkage. The second electrical control cabinet 30 integrates components such as water pump 22, high-pressure hose 23, temperature sensor 13, hose connector 24, liquid level sensor, and waterproof connector 28. The power cord of the heating element is connected to the electrical control cabinet through the waterproof connector 28. The components and structures are centrally arranged for easy maintenance. The third electrical control cabinet 31 integrates a PLC controller to adjust the air volume, spray frequency, and water temperature of the fan 19 in real time, and controls the cabinet temperature through the heat dissipation vent.

[0057] The connector 27 on the outside of the first electrical control cabinet 29 is centrally connected to the electrical control signals and power supply. External control signals and power are transmitted to various electrical components inside the cabinet through connector 27. The PLC controller performs linkage control on the speed of the fan 19, the spray cycle, and the differential pressure according to the received signals and preset programs. For example, when the differential pressure increases, the PLC controller can automatically increase the speed of the fan 19, increase the air volume, and adjust the spray cycle at the same time to ensure the purification effect of the electrostatic adsorption module 5.

[0058] The water pump 22 inside the second electrical control cabinet 30 starts and stops according to the instructions of the PLC controller, delivering cleaning water to the spray assembly. The power cord of the heating element is connected to the electrical control cabinet through a waterproof connector 28. The PLC controller controls the on / off state of the heating element based on the water temperature detected by the temperature sensor 13, thereby regulating the water temperature. When the water temperature is lower than the set value, the heating element starts heating; when the water temperature reaches the set value, the heating element stops heating.

[0059] The PLC controller inside the third electrical control cabinet 31 receives various monitoring signals in real time and adjusts the airflow, spray frequency, and water temperature of the fan 19 according to a preset program. By controlling the output frequency of the fan 19's inverter, the fan speed is adjusted, thereby changing the airflow. The spray frequency is adjusted by controlling the transmission mechanism of the spray assembly and the switching of the spray nozzles 11. The water temperature is adjusted by controlling the on / off state of the heating element. Simultaneously, based on the feedback signal from the cabinet's internal temperature sensor 13, the PLC controller controls the cabinet's internal temperature via the fan at the heat dissipation vents, ensuring that the electrical components operate in a suitable temperature environment.

[0060] In the utility model, the front of the cabinet 1 is also provided with a filter maintenance door. The main body of the filter maintenance door is a quick-release door panel fixed by bolts, which can quickly disassemble and replace the internal filter. The fan 19 maintenance door is located below the filter maintenance door and also adopts a quick-release door panel, which facilitates the maintenance of the centrifugal fan 19 and transmission components.

[0061] In this utility model, the bottom of the cabinet 1 is provided with a first support foot 20, and the bottom of the air inlet pipe 2 is provided with a second support foot 21. The first support foot 20 and the second support foot 21 respectively provide stable support for the cabinet 1 and the air inlet pipe 2, ensuring that the equipment will not sway or tilt due to its own weight or external forces during operation, thus improving the safety and reliability of the equipment. One or more lifting lugs 32 are welded to the top to meet the needs of hoisting and transportation, specifically as follows... Figures 1 to 3 As shown.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An oil mist purification apparatus characterized by comprising: It includes a cabinet (1), with an air inlet pipe (2) at the bottom and an air outlet (3) at the top; it also includes a three-stage purification system and a self-cleaning circulation system installed inside the cabinet (1); the three-stage purification system includes a primary filter (4), an electrostatic adsorption module (5) and a high-efficiency filter module (6) from bottom to top. The self-cleaning circulation system includes a spray assembly and a water tank assembly (9). The spray assembly is located between the electrostatic adsorption module (5) and the high-efficiency filter module (6) and is used to spray and clean the electrostatic adsorption module (5). The water tank assembly (9) is located at the bottom of the inner cavity of the cabinet (1) and is used to store and supply cleaning water and collect and discharge cleaning wastewater. The water tank assembly (9) is equipped with a heating device (10) for heating the cleaning water.

2. The oil mist purifying apparatus according to claim 1, characterized by The spray assembly includes a liquid distribution pipe (7), a transmission mechanism, and a guide rail (8); the liquid distribution pipe (7) is slidably connected to the guide rail (8), and the transmission mechanism and the guide rail (8) are both fixedly connected to the cabinet (1). The transmission mechanism cooperates with the liquid distribution pipe (7) to drive the liquid distribution pipe (7) to move horizontally along the guide rail (8); the liquid distribution pipe (7) is also provided with several nozzles (11) for spraying cleaning water onto the electrostatic adsorption module (5).

3. The oil mist purifying apparatus according to claim 1 or 2, characterized by The water tank assembly (9) includes a clean water tank (901) and a wastewater tank (902); the clean water tank (901) is used to store cleaning water, a heating device (10) is installed in the clean water tank (901), and a first liquid level sensor (12) and a temperature sensor (13) are also installed on the clean water tank (901); the wastewater tank (902) is used to collect and discharge cleaning wastewater, and a second liquid level sensor (14) is provided.

4. The oil mist purifying apparatus according to claim 3, characterized by The clean water tank (901) and the sewage tank (902) are a double-tank structure formed by one piece. The upper surface of the clean water tank (901) and the bottom surface of the sewage tank (902) are both inclined, and the sewage tank (902) is located on the lower side of the clean water tank (901). The upper surface of the clean water tank (901) is provided with a sealing cover plate (15), and the upper surface of the sewage tank (902) is an open structure.

5. The oil mist coalescer of claim 3, wherein It also includes an inlet pipe (16), a drain pipe (17) and a sewage pipe (18), and the inlet pipe (16) and the drain pipe (17) pass through the cabinet (1) and are connected to the clean water tank (901), and the sewage pipe (18) passes through the cabinet (1) and is connected to the sewage tank (902).

6. The oil mist purifying apparatus according to claim 1, 2, 4 or 5, characterized by, A fan (19) is also provided between the spray assembly and the high-efficiency filter module (6).

7. The oil mist coalescer of claim 1, 2, 4 or 5, wherein, It also includes an electrical control module, used to control the spray cycle, water temperature, and monitor and control the equipment's operating status.

8. The oil mist coalescer of claim 1, 2, 4 or 5, wherein, The cabinet (1) is also provided with a first support foot (20) at the bottom, and the air inlet pipe (2) is also provided with a second support foot (21) at the bottom.

9. The oil mist coalescer of claim 1, 2, 4 or 5, wherein, The high-efficiency filter module (6) has a filter structure with two or more layers, and at least one layer is a high-efficiency filter, while the rest are high-efficiency filters or chemical filters.

Images