Oil mist separation and recovery device
By employing a design that combines a low-speed rotating cylindrical filter screen with an oil scraper in the oil mist separation and recovery device, the problem of filter screen clogging is solved, a self-cleaning function is achieved, maintenance costs and downtime are reduced, and the service life of the filter screen is extended.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-17
AI Technical Summary
Existing oil mist separation and recovery devices lack self-cleaning functions, leading to filter screen pore blockage, frequent filter screen replacements, increased maintenance costs, and downtime.
The system employs a low-speed rotating cylindrical filter screen in conjunction with an oil scraper to achieve dynamic self-cleaning. The filter screen is driven to rotate at low speed by a motor, and the oil scraper removes the oil film. The position of the oil scraper can be adjusted by an electric push rod to accommodate filter screens of different diameters.
It effectively prevents filter clogging, reduces replacement frequency, lowers maintenance costs, extends filter life, and improves equipment operating efficiency and versatility.
Smart Images
Figure CN224506575U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of oil mist separation and recovery devices, specifically to oil mist separation and recovery devices. Background Technology
[0002] Oil mist separation and recovery devices are used to separate and recover oil mist from the air. They are mainly used in industries such as machining and metal cutting, which often generate a large amount of oil mist during production. If the oil mist is directly emitted into the atmosphere, it will not only waste resources but also pollute the environment and may have adverse effects on workers' health. The device can reduce the amount of oil mist in the air, reduce environmental pollution, convert oil mist into reusable oil products, realize the recycling of resources, reduce the concentration of oil mist in the workshop, improve the working environment, and protect the health of workers.
[0003] Common oil mist separation and recovery devices use a fixed filter structure. When filtering air containing oil mist, oil mist particles are continuously intercepted and accumulate on the filter surface, gradually forming an oil film or sludge. This causes the filter pores to become gradually blocked, and the air permeability to decrease continuously. Due to the lack of self-cleaning function, the device cannot automatically remove the attached oil stains during operation, resulting in frequent periodic shutdowns for disassembly, cleaning, or replacement of the filter. Otherwise, the filtration efficiency will be affected and the air resistance will be increased. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an oil mist separation and recovery device. The fixed filter screen is replaced with a low-speed rotating cylindrical structure, which works in conjunction with a fixed oil scraper to promptly remove the oil film, prevent clogging, reduce replacement frequency, and lower maintenance costs. This solves the problem that common oil mist separation and recovery devices lack self-cleaning functions and cannot automatically remove attached oil stains during equipment operation, leading to frequent filter screen replacements.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an oil mist separation and recovery device, including a base plate and a cylindrical shell mounted on the upper part of the base plate; it also includes an air inlet pipe connected to the outer side of the cylindrical shell, and a connector 1 connected to the other end of the air inlet pipe. The air inlet pipe is used to introduce the gas to be processed into the cylindrical shell, and the connector 1 is used to connect the air inlet pipe to an external conveying pipe. A cylindrical filter screen is installed inside the cylindrical shell. A rotating component and a collecting component are installed at the lower end of the cylindrical shell. An oil scraping component is installed on the outer side of the cylindrical shell. An exhaust component is installed at the upper end of the cylindrical filter screen. The rotating component is used to drive the cylindrical filter screen to rotate. The oil scraping component continuously scrapes off the oil film as the cylindrical filter screen rotates. The collecting component collects the scraped oil. The exhaust component is used to discharge the filtered gas.
[0006] Furthermore, the rotating assembly includes a motor mounted on the lower end face of the base plate and a mounting plate mounted on the output end of the motor. The mounting plate and the cylindrical filter screen are detachably mounted. The motor is used to drive the mounting plate to rotate, and the cylindrical filter screen can rotate at a low speed along with the mounting plate.
[0007] Furthermore, the exhaust assembly includes an exhaust pipe 2 connected to the upper end of the cylindrical filter screen, a rotating connector installed on the top of the cylindrical shell, an exhaust pipe 1 installed inside the rotating connector, and a connector 2 installed at the other end of the exhaust pipe 1. The exhaust pipe 1 and the exhaust pipe 2 are rotatably connected by the rotating connector. The exhaust pipe 1 and the exhaust pipe 2 are used to exhaust the gas filtered inside the cylindrical filter screen.
[0008] Furthermore, the cylindrical filter screen is made of multiple layers of stainless steel wire mesh rolled into a cylindrical shape, and its surface is provided with pores to intercept oil droplets. The rotating connector ensures that the rotation of the cylindrical filter screen does not affect the connection channel between the first and second air outlet pipes.
[0009] Furthermore, the collection assembly includes an oil collection trough located on the bottom surface inside the cylindrical shell, an oil drain pipe connected to the lower end of the base plate, a solenoid valve installed on the outer side of the oil drain pipe, and a collection box installed at the other end of the oil drain pipe. The oil drain pipe is used to receive oil droplets in the oil collection trough and guide them into the collection box. The collection box is used to collect and store the oil. The solenoid valve controls the opening and closing of the oil drain pipe.
[0010] Furthermore, the oil collection trough is located directly below the cylindrical filter screen and is arranged in a ring shape. The bottom of the oil collection trough is inclined at five degrees toward the oil outlet, and the oil outlet pipe is located at the oil outlet.
[0011] Furthermore, the oil scraping assembly includes an electric push rod mounted on the outer side of the cylindrical housing, a mounting plate mounted on the output end of the electric push rod, a connecting plate detachably mounted on the surface of the mounting plate, and an oil scraping blade mounted on the outer side of the connecting plate. The oil scraping blade causes oil droplets to collect and flow into the lower oil collection groove. The electric push rod is used to control the oil scraping blade to adhere to the cylindrical filter screen. The electric push rod retracts to avoid the cylindrical filter screen from spinning idly and experiencing frictional wear.
[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. The fixed filter screen is set as a low-speed rotating cylindrical filter screen, so that the oil mist gas is filtered from the outside to the inside. Oil droplets gather on the surface of the filter screen to form a film. Driven by the motor, the filter screen rotates continuously, and in conjunction with the fixed oil scraper, the surface oil film is scraped off in real time, which effectively prevents oil from clogging the filter holes. This dynamic self-cleaning mechanism reduces the risk of filter screen clogging, thereby reducing the frequency of filter screen replacement. This not only reduces maintenance costs and downtime, but also extends the service life of the cylindrical filter screen. 2. The electric push rod can adjust the position of the oil scraper to adapt to cylindrical filter screens of different diameters. When replacing the filter screen, only the push rod stroke needs to be adjusted to achieve precise fit. There is no need to replace the oil scraper structure, which improves the equipment's versatility and ease of maintenance, and is suitable for various working conditions. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the bottom three-dimensional structure of this utility model; Figure 3 This is a cross-sectional three-dimensional structural diagram of the present invention; Figure 4 This is a partial cross-sectional three-dimensional structural schematic diagram of the present utility model; Figure 5 This is a three-dimensional structural diagram of the location of the oil scraper of this utility model.
[0014] In the diagram: 1. Base plate; 2. Cylindrical shell; 3. Air inlet pipe; 4. Connector 1; 5. Rotating connector; 6. Air outlet pipe 1; 7. Connector 2; 8. Air outlet pipe 2; 9. Motor; 10. Mounting plate; 11. Cylindrical filter screen; 12. Oil collection trough; 13. Oil drain pipe; 14. Solenoid valve; 15. Collection box; 16. Electric push rod; 17. Mounting plate; 18. Connecting plate; 19. Oil scraper. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figure 1 The oil mist separation and recovery device in this embodiment includes a base plate 1 and a cylindrical shell 2 installed on the upper end of the base plate 1; it also includes an air inlet pipe 3 connected to the outer side of the cylindrical shell 2, and a connector 4 connected to the other end of the air inlet pipe 3. The air inlet pipe 3 is used to introduce the gas to be processed into the cylindrical shell 2, and the connector 4 is used to connect the air inlet pipe 3 to an external delivery pipe.
[0017] In this embodiment, the fixed filter screen is replaced with a low-speed rotating cylindrical filter screen 11, which, together with the fixed oil scraper 19, scrapes off the oil film in real time, achieving dynamic self-cleaning, preventing clogging, extending the filter screen life, reducing maintenance costs and downtime. At the same time, the position of the oil scraper 19 can be adjusted by the electric push rod 16 to adapt to filter screens of different diameters, improving versatility and ease of maintenance.
[0018] Please see Figures 1-5In this embodiment, to achieve dynamic self-cleaning, prevent clogging, and reduce the frequency of filter replacement, a cylindrical filter 11 is installed inside the cylindrical shell 2. A rotating assembly and a collecting assembly are installed at the lower end of the cylindrical shell 2. An oil scraping assembly is installed on the outer side of the cylindrical shell 2. An exhaust assembly is installed at the upper end of the cylindrical filter 11. The rotating assembly is used to drive the cylindrical filter 11 to rotate. The oil scraping assembly continuously scrapes off the oil film as the cylindrical filter 11 rotates. The collecting assembly collects the scraped oil. The exhaust assembly is used to discharge the filtered gas.
[0019] In this embodiment, a cylindrical filter screen 11 is installed inside the cylindrical shell 2 to filter oil mist gas. The rotating component is located at the lower end, driving the filter screen to rotate at a low speed, so that oil droplets are not easy to accumulate. The oil scraping component is installed on the outside of the shell and contacts the rotating filter screen through the oil scraping blade 19 to scrape off the surface oil film in real time to avoid clogging. The collection component is set at the bottom to receive and discharge the scraped oil for recycling. The exhaust component is located at the upper end of the filter screen to discharge the filtered clean gas outside the equipment. All components work together to achieve continuous operation, reduce maintenance frequency, extend the service life of the filter screen, improve equipment operating efficiency, and ensure stable and reliable oil mist treatment effect, which is suitable for long-term continuous operation scenarios.
[0020] It should be noted that the rotating assembly includes a motor 9 mounted on the lower end face of the base plate 1 and a mounting plate 10 mounted on the output end of the motor 9. The mounting plate 10 and the cylindrical filter screen 11 are detachably mounted. The motor 9 drives the mounting plate 10 to rotate, and the cylindrical filter screen 11 can rotate at a low speed along with the mounting plate 10. The exhaust assembly includes an exhaust pipe 2 8 connected to the upper end of the cylindrical filter screen 11, a rotating connector 5 mounted on the top of the cylindrical shell 2, an exhaust pipe 1 6 installed inside the rotating connector 5, and a connector 2 7 installed at the other end of the exhaust pipe 1 6. The exhaust pipe 1 6 and the exhaust pipe 2 8 are rotatably connected through the rotating connector 5. The exhaust pipe 1 6 and the exhaust pipe 2 8 are used to exhaust the gas filtered inside the cylindrical filter screen 11. The cylindrical filter screen 11 is made of multiple layers of stainless steel wire mesh rolled into a cylindrical shape, and its surface is provided with pores to intercept oil droplets. The rotating connector 5 ensures that the rotation of the cylindrical filter screen 11 does not affect the exhaust pipe 1 6 and the exhaust pipe 2 8. The connecting channel of the second air outlet pipe 8 is provided by the motor 9, which drives the mounting plate 10 to rotate, enabling the filter screen to rotate at a low speed. The mounting plate 10 is connected to the output end of the motor 9, which is used to fix and drive the cylindrical filter screen 11 to rotate synchronously, facilitating continuous filtration and cleaning. The second air outlet pipe 8 is connected to the upper end of the cylindrical filter screen 11 to exhaust the clean gas inside the filter screen. The rotating connector 5 is installed on the top of the housing, allowing the second air outlet pipe 8 to remain connected to the fixed pipe when rotating with the filter screen. The first air outlet pipe 6 cooperates with the rotating connector 5 to lead the gas out from the rotating second air outlet pipe 8. The second connector 7 is located at the end of the first air outlet pipe 6 and is used to connect to the external exhaust pipe to achieve gas discharge. The cylindrical filter screen 11 is made of multiple layers of stainless steel wire mesh with micropores on the surface to intercept oil mist particles and achieve gas-liquid separation. The multi-layer structure enhances the filtration accuracy and strength, ensuring the filtration effect under long-term operation.
[0021] Please see Figures 1-5 In this embodiment, to accommodate the installation of filters with different diameters, the oil scraping assembly includes an electric push rod 16 mounted on the outer side of the cylindrical housing 2, a mounting plate 17 mounted on the output end of the electric push rod 16, a connecting plate 18 detachably mounted on the surface of the mounting plate 17, and an oil scraping blade 19 mounted on the outer side of the connecting plate 18. The oil scraping blade 19 causes oil droplets to collect and flow into the lower oil collection groove 12. The electric push rod 16 is used to control the oil scraping blade 19 to fit against the cylindrical filter 11. The electric push rod 16 retracts to avoid the cylindrical filter 11 from spinning idly and experiencing frictional wear.
[0022] In this embodiment, the electric push rod 16 provides linear extension and retraction power, controls the contact and separation of the oil scraper 19 with the filter screen, realizes on-demand cleaning, and is adjustable in thrust and stroke to adapt to cylindrical filter screens 11 of different diameters, improving the versatility of the equipment. The mounting plate 17 is connected to the output end of the electric push rod 16 and is used to support and fix the subsequent oil scraping components, transmit the movement of the push rod, and ensure that the oil scraping assembly moves synchronously as a whole. The connecting plate 18 is detachably mounted on the mounting plate 17 as the mounting base for the oil scraper 19, which facilitates the replacement of oil scraper 19 of different shapes or materials to adapt to different oils and working conditions. The oil scraper 19 is in close contact with the surface of the filter screen and scrapes off the attached oil film as the filter screen rotates, causing oil droplets to collect and flow into the lower oil collection tank 12, realizing continuous self-cleaning. Wear-resistant and oil-resistant materials are used to ensure the oil scraping effect and service life.
[0023] It should be noted that the collection assembly includes an oil collection trough 12 located inside the bottom of the cylindrical shell 2, an oil drain pipe 13 connected to the lower end of the base plate 1, a solenoid valve 14 installed on the outer side of the oil drain pipe 13, and a collection box 15 installed at the other end of the oil drain pipe 13. The oil drain pipe 13 is used to receive oil droplets in the oil collection trough 12 and guide them into the collection box 15. The collection box 15 is used to collect and store the oil. The solenoid valve 14 controls the opening and closing of the oil drain pipe 13. The oil collection trough 12 is located directly below the cylindrical filter screen 11 and is arranged in a ring shape. The bottom of the oil collection trough 12 is inclined at five degrees towards the oil drain port. The oil drain pipe 13 is located at the oil drain port.
[0024] The working principle of the above embodiments is as follows: During use, oil-mist-laden air enters the cylindrical shell 2 through the air inlet pipe 3. The gas penetrates the filter from the outside of the cylindrical filter screen 11 inwards. Oil droplets are intercepted by the micropores on the filter screen surface and aggregate into a film. Clean air flows upwards through the inside of the filter screen, enters the rotating connector 5 through the second air outlet pipe 8, and then exits the equipment through the first air outlet pipe 6 and the second connector 7. The rotating connector 5 ensures that the exhaust channel remains open when the filter screen rotates. After the motor 9 starts, it drives the mounting plate 10 to rotate. The mounting plate 10 is detachably connected to the cylindrical filter screen 11, allowing it to rotate at low speed. The electric push rod 16 extends according to the operating requirements, pushing the mounting plate 17 forward. The connecting plate 18 and the scraper blade 19 are driven to adhere to the rotating filter screen surface, scraping off the attached oil film. The scraped oil droplets fall into the annular oil collection trough 12 directly below. The bottom of the oil collection trough 12 is inclined at five degrees to facilitate the oil to collect at the drain port. The solenoid valve 14 opens at regular intervals to discharge the oil through the drain pipe 13 into the collection box 15 for storage. When the electric push rod 16 retracts, the scraper blade 19 disengages from the filter screen, reducing no-load friction. The entire device achieves filtration and self-cleaning at the same time, reducing the risk of clogging, reducing the frequency of filter screen replacement, extending service life, improving operating efficiency, adapting to the replacement needs of filter screens of different diameters, and is easy to maintain, suitable for continuous operation conditions.
[0025] It should be noted that the control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail here.
[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An oil mist separation and recovery device, comprising a bottom plate (1) and a cylindrical shell (2) installed on the upper end of the bottom plate (1); characterized in that: It also includes an air inlet pipe (3) connected to the outer side of the cylindrical shell (2), and a connector (4) connected to the other end of the air inlet pipe (3). The air inlet pipe (3) is used to introduce the gas to be processed into the cylindrical shell (2), and the connector (4) is used to connect the air inlet pipe (3) to the external delivery pipe. A cylindrical filter screen (11) is installed inside the cylindrical shell (2). A rotating component is provided at the lower end of the cylindrical shell (2). A collecting component is installed at the lower end of the cylindrical shell (2). An oil scraping component is installed on the outer side of the cylindrical shell (2). An exhaust component is installed at the upper end of the cylindrical filter screen (11). The rotating component is used to drive the cylindrical filter screen (11) to rotate. The oil scraping component continuously scrapes off the oil film as the cylindrical filter screen (11) rotates. The collecting component collects the scraped oil. The exhaust component is used to discharge the filtered gas.
2. The oil mist separating and recovering apparatus according to claim 1, characterized by: The rotating assembly includes a motor (9) mounted on the lower end face of the base plate (1) and a mounting plate (10) mounted on the output end of the motor (9). The mounting plate (10) and the cylindrical filter screen (11) are detachably mounted. The motor (9) is used to drive the mounting plate (10) to rotate, and the cylindrical filter screen (11) can rotate at a low speed along with the mounting plate (10).
3. The oil mist separating and recovering apparatus according to claim 2, characterized by: The exhaust assembly includes an exhaust pipe 2 (8) connected to the upper end of the cylindrical filter (11), a rotating connector (5) installed on the top of the cylindrical shell (2), an exhaust pipe 1 (6) installed inside the rotating connector (5), and a connector 2 (7) installed at the other end of the exhaust pipe 1 (6). The exhaust pipe 1 (6) and the exhaust pipe 2 (8) are rotatably connected by the rotating connector (5). The exhaust pipe 1 (6) and the exhaust pipe 2 (8) are used to exhaust the gas filtered inside the cylindrical filter (11).
4. The oil mist separating and recovering apparatus according to claim 3, characterized by: The cylindrical filter (11) is made of multiple layers of stainless steel wire mesh rolled into a cylindrical shape. Its surface is provided with pores to intercept oil droplets. The rotating connector (5) ensures that the rotation of the cylindrical filter (11) does not affect the connection channel between the first air outlet (6) and the second air outlet (8).
5. The oil mist separating and recovering apparatus according to claim 3, characterized by: The collection assembly includes an oil collection trough (12) opened inside the bottom surface of the cylindrical shell (2), an oil drain pipe (13) connected to the lower end of the bottom plate (1), a solenoid valve (14) installed on the outer side of the oil drain pipe (13), and a collection box (15) installed at the other end of the oil drain pipe (13). The oil drain pipe (13) is used to receive oil droplets in the oil collection trough (12) and guide them into the collection box (15). The collection box (15) is used to collect and store the oil. The solenoid valve (14) controls the opening and closing of the oil drain pipe (13).
6. The oil mist separating and recovering apparatus according to claim 5, characterized by: The oil collection trough (12) is located directly below the cylindrical filter screen (11) and is arranged in a ring. The bottom of the oil collection trough (12) is inclined at five degrees toward the oil outlet, and the oil drain pipe (13) is located at the oil outlet.
7. The oil mist separating and recovering apparatus according to claim 5, characterized by: The oil scraping assembly includes an electric push rod (16) mounted on the outer side of the cylindrical housing (2), a mounting plate (17) mounted on the output end of the electric push rod (16), a connecting plate (18) detachably mounted on the surface of the mounting plate (17), and an oil scraper (19) mounted on the outer side of the connecting plate (18). The oil scraper (19) causes oil droplets to gather and flow into the lower oil collection groove (12). The electric push rod (16) is used to control the oil scraper (19) to fit with the cylindrical filter screen (11). The electric push rod (16) retracts to avoid the cylindrical filter screen (11) from spinning and rubbing.