Oil smoke absorption device for mechanical transmission part

Abstract

The utility model relates to the technical field of bearing position smoke recovery, in particular to a lampblack absorption device for a mechanical transmission part. Comprising a suction system for extracting and conveying oil fume, a multi-stage filtering system for filtering and gathering the oil fume, and an oil-water separation device which is in butt joint with the multi-stage filtering system and is used for recycling gathered oil. The crude oil tank, the oil smoke exhaust port of the bearing position and the air quick-mounting pipe are connected to the negative pressure device, oil smoke passes through the negative pressure device and is subjected to multi-stage filtering treatment through the multi-stage filtering system, multi-stage purification of smoke is achieved, and the discharged smoke is prevented from polluting the environment. And oil filtered and condensed by the oil fume is discharged into the oil-water separation device for separation and recovery treatment, so that resource recovery is realized.

Description

Technical Field

[0001] This utility model relates to the field of bearing seat flue gas recovery technology, and in particular to an oil fume absorption device for mechanical transmission parts. Background Technology

[0002] In modern industrial production, especially in areas involving high-speed rotating mechanical components such as gearboxes and turbines, balancing efficient equipment operation with environmental protection has become a pressing issue. Particularly during high-speed operation of turbines, friction and high temperatures often generate large amounts of oil fumes in the oil tank and bearing areas.

[0003] Traditional solutions, such as regular manual cleaning and the addition of ventilation facilities, are often only temporary solutions. They cannot effectively curb the generation of cooking fumes, nor can they fundamentally improve the working environment. At the same time, they increase maintenance costs and the consumption of human resources.

[0004] Therefore, this utility model provides a mechanical transmission part oil fume absorption device, which uses negative pressure to collect, guide and filter the flue gas. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art by proposing a mechanical transmission part oil fume absorption device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A mechanical transmission part oil fume absorption device includes a suction system for extracting and conveying oil fumes, a multi-stage filtration system for filtering and collecting the fumes, and an oil-water separation device that is connected to the multi-stage filtration system and used to recover the collected oil.

[0008] Preferably, the multi-stage filtration system includes a filter box, in which a flow equalization plate, a pre-filter plate, an electric field, and a post-filter plate are arranged in sequence; the bottom wall of the filter box is provided with a conical oil collecting tray, and the lower end of the oil collecting tray is provided with an oil drain pipe with a valve.

[0009] Preferably, the pre-filter plate is a primary filter screen.

[0010] Preferably, the post-filter plate is a HEPA high-efficiency filter layer.

[0011] Preferably, both the pre-filter plate and the post-filter plate can be detachably installed inside the filter box.

[0012] Preferably, the oil-water separation device includes an oil-water separator, which is connected to an oil drain pipe.

[0013] Preferably, the suction system includes a fan and an air pipe. The air inlet of the fan is connected to the air outlet of the filter box, and one end of the air pipe is connected to the smoke exhaust port via a pneumatic quick connector, while the other end is connected to the air inlet of the filter box.

[0014] Preferably, the trachea is equipped with a negative pressure adjustment device.

[0015] Preferably, the trachea is equipped with a negative pressure detection device.

[0016] Compared with the prior art, this utility model provides an oil fume absorption device for a mechanical transmission part, which has the following beneficial effects:

[0017] 1. This utility model utilizes the oil tank and bearing position oil fume exhaust outlet, and installs an air quick-connect pipe connected to a negative pressure device. The oil fume passes through the negative pressure device and undergoes multi-stage filtration system treatment to achieve multi-stage purification of the flue gas, thereby avoiding environmental pollution from the emitted flue gas. The oil condensed from the filtered oil fume is discharged into an oil-water separator for separation and recycling, achieving resource recovery.

[0018] 2. In this utility model, the negative pressure device is set after the multi-stage filtration system. The flue gas is filtered and purified first, and then passes through the negative pressure device, which reduces the corrosiveness to the cavity of the negative pressure device, thereby reducing the damage to the negative pressure device and improving its service life.

[0019] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the plate electric field and centrifugal oil-water separation system of this utility model.

[0021] Figure 2 For the present utility model Figure 1 A schematic diagram of the cross-section at point AA.

[0022] Figure 3 This is a schematic diagram of the honeycomb electric field and sedimentation oil-water separation system of this utility model.

[0023] Figure 4 For the present utility model Figure 3 Schematic diagram of the cross-section at BB.

[0024] Figure 5 For the present utility model Figure 3 A schematic diagram of the filter box.

[0025] Figure 6 For the present utility model Figure 3 A schematic diagram of an oil-water separation device.

[0026] In the diagram: 1. Pneumatic quick connector; 2. Exhaust port; 3. Negative pressure monitoring equipment; 4. Negative pressure regulating device; 5. Filter box; 6. Pre-filter plate; 7. Electric field; 8. Post-filter plate; 9. Negative pressure device; 10. Auxiliary pipe; 11. Centrifugal oil-water separator; 12. Oil collection tray; 13. Oil drain pipe; 14. Baffle plate; 15. Heating equipment; 16. Aeration assembly; 17. Oil tank; 18. Slope; 19. Flow equalization plate. Detailed Implementation

[0027] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6 The technical solutions in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0028] Example 1: To improve flue gas recovery efficiency and prevent direct emission of flue gas from polluting the environment, this example provides a mechanical transmission part oil fume absorption device, including:

[0029] (1) A suction system consisting of a negative pressure system and a duct. The suction system is a negative pressure suction system, which uses a high-performance fan or piston compressor or other negative pressure device 9 to create a local negative pressure environment for the negative pressure accumulation of oil fumes, and guides and transports the oil fumes through a pipeline system.

[0030] (2) A multi-stage filtration system consisting of multiple layers of filtration devices achieves multi-stage purification of oil fumes. The multi-stage filtration system is an integrated collection of multiple layers of filtration components, used for sealing and agglomerating flue gas.

[0031] (3) Oil-water separation device to achieve oil-water separation.

[0032] Principle details of this embodiment:

[0033] Bearings in the output rotating parts of large motors, generators, gearboxes, and other equipment are designed with exhaust ports 2 or vents to discharge oil mist. The exhaust port 2 connects to the air pipe in the suction system via a pneumatic quick-connect coupling 1. The extended end of the air pipe connects to the air inlet of the filter box 5, the carrier of the multi-stage filtration system. The air outlet of the filter box 5 connects to the air inlet of the negative pressure device 9 in the suction system. The air outlet of the negative pressure device 9 connects to the flue gas exhaust vent.

[0034] The filter box 5 is provided with a flow equalization plate 19, a pre-filter plate 6, an electric field 7 consisting of multiple sets of positive and negative electrodes arranged alternately, and a rear filter plate 8 in sequence from the air inlet to the air outlet. Inside the filter box 5, below the electric field 7, there is a cone-shaped oil collecting tray 12. The lower end of the oil collecting tray 12 is provided with an oil drain pipe 13 with a valve. The oil drain pipe 13 is connected to the feed port of the oil-water separator via a valved pipe. The filter box 5 is provided with a cleaning component.

[0035] The flow equalization plate 19, also known as the flow distribution plate, located at the air inlet, can be any of the following: perforated plate, honeycomb plate, guide vane type, or metal mesh / sieve plate. In this design, a perforated plate is preferred. The flow equalization plate 19 obstructs and distributes the oil fumes injected into the filter box 5, eliminating uneven flow velocity, reducing eddies and swirls, and making the oil fume flow more stable. By ensuring the oil fumes are evenly distributed within the filter box 5, it avoids excessive local pressure in the filtration system caused by concentration at a single point. The guide vane is made directly from corrosion-resistant, high-strength materials such as stainless steel, or from materials coated with a corrosion-resistant coating.

[0036] The pre-filter plate 6, located behind the flow equalization plate 19, is a primary filter plate, or a primary filter. It is mainly used to filter oil fume molecules larger than 5μm, filtering and blocking large molecules to achieve the first step of the multi-stage filtration process.

[0037] An electric field 7 is positioned behind the pre-filter plate 6, with discharge electrodes (such as tungsten wires or sawtooth wires) and an anode plate arranged in a wire-plate electrode configuration. Motor supports are located at both ends of the electrodes within the filter plate for electrode mounting; an insulating environment is provided to prevent leakage. A high-voltage power supply provides DC high voltage, generating corona discharge. The passing oil mist gas is ionized, becoming positively charged. Charged oil mist particles move towards the anode plate under the influence of electric field 7 and adhere to it. The oil mist accumulates into droplets and drips into the oil collection tray 12 below due to gravity. Once the oil in the collection tray 12 has accumulated to a certain level, it is injected into an oil-water separator via a valved pipe for oil-water separation and recovery. In this design, two or more sets of discharge electrodes and anode plates are used, dividing the space within the filter box 5 and improving the collection efficiency of small oil particles.

[0038] The post-filter plate 8, located behind the electric field 7, is a HEPA high-efficiency filter layer. The HEPA filter layer consists of a stack of continuously folded glass fiber membranes, forming a corrugated pad to hold and support the filter medium. It achieves an efficiency of 99.998% for 0.1-micron and 0.3-micron particles. The HEPA filter is characterized by its ability to allow air to pass through, but prevents the passage of fine particles. It provides final filtration for any remaining tiny oil mist particles, ensuring complete purification.

[0039] The cleaning assembly (not shown in the attached diagram) installed within the filter chamber 5 includes multiple sets of nozzles mounted on the top wall of the filter chamber 5, above the electric field 7, the pre-filter plate 6, and the post-filter plate 8. These nozzles are angled relative to the pre-filter plate 6 and the post-filter plate 8, spraying water at an angle onto the filter plates. During shutdown cleaning, continuous or intermittent water rinsing continuously impacts the filter plates and electrodes, carrying away adhering oil mist particles. This achieves the self-cleaning function of the multi-stage filtration system, preventing filter clogging and ensuring continuous, efficient operation.

[0040] The oil collection tray 12 located at the bottom of the filter box 5 is in the shape of a cone, which facilitates the accumulation of oil droplets.

[0041] The oil-water separation device connected to the oil drain pipe 13 is a centrifugal oil-water separator 11, mainly comprising a centrifuge body and a centrifuge drum housed within the body. The oil drain pipe 13 connects to the feed pipe of the centrifuge drum, such as via a swivel joint, to deliver oil into the centrifuge drum. During high-speed rotation of the centrifuge drum, due to the difference in density between oil and water (oil being less dense), the oil is pushed against the inner wall of the centrifuge drum by centrifugal force, forming an oil ring; while the water concentrates in the center of the centrifuge drum, thus separating the oil and water. The oil and water are then discharged from the side wall and bottom valve ports of the centrifuge drum, respectively, thus achieving oil-water separation.

[0042] The centrifuge feed cylinder of the oil-water separator is equipped with a condensation unit, such as a wound condenser tube. The condensation unit condenses the oil mist that seeps into the self-draining oil pipe 13 into oil droplets, which are then separated into oil and water in the oil-water separator.

[0043] A negative pressure monitoring point is provided on the gas pipe that connects to the exhaust port 2 of the bearing position, and a negative pressure monitoring device 3, such as a negative pressure sensor, is provided at the negative pressure monitoring point to monitor the negative pressure status in real time.

[0044] The gas pipe connected to the exhaust port 2 of the bearing position is equipped with a negative pressure adjustment device, such as a pressure regulating valve, to automatically adjust the pressure inside the gas pipe and ensure that the negative pressure inside the pipe is within the optimal absorption range.

[0045] The air pipe that connects to the exhaust port 2 at the bearing location is made of aluminum alloy quick-connect air hose, which has a high-quality smooth inner wall with an inner wall roughness between 0.02-0.04 mm, reducing the frictional resistance of oil fume transportation. It is used in conjunction with pneumatic quick coupling 1 for easy replacement and maintenance of the main equipment.

[0046] The operating power of the negative pressure device 9 is adjustable. This can be achieved by adjusting the power of the drive source, such as the speed of the fan's drive motor, through devices like frequency converters, PLC control programming systems, and speed controllers. It works in conjunction with pressure regulating valves and negative pressure sensors to adaptively regulate the negative pressure within the pipe. The drive motor can be a 0.75kW three-phase 380V / 220V 50HZ motor, suitable for various industrial and household applications.

[0047] Both the pre-filter plate 6 and the post-filter plate 8, located in the filter box 5, are detachable and installable. The filter box 5 has mounting holes and a limiting frame at the upper end of the mounting positions for both plates. The pre-filter plate 6 and the post-filter plate 8 are inserted into the filter through the mounting holes and then secured with screws. Sealing structures such as gaskets are provided at the mounting locations to allow for detachable installation of the filter plates, facilitating maintenance and replacement, extending the service life of the entire system, and reducing the cost of replacing the entire equipment.

[0048] Oil fume purification process for bearing positions:

[0049] Create a negative pressure environment and collect cooking fumes;

[0050] The fumes are purified step by step through a multi-stage filtration system;

[0051] Separate and recover oil from oily wastewater;

[0052] Condensation and recovery of oil vapor;

[0053] The intelligent monitoring system automatically adjusts system parameters and monitors the operating status.

[0054] In Example 2, a cylindrical anode component is used instead of a plate-shaped anode component, such as a cylindrical or honeycomb shape. The gaps between the cylindrical anodes are filled with an impermeable insulating material, such as ceramic. In this case, the discharge electrode is located inside the cylindrical anode, and oil mist particles adhere to the inner wall of the cylindrical anode and drip down along the inner wall.

[0055] Compared to the line-plate type electric field 7, which requires precise control of the electrode spacing to prevent surface short circuits, the line-cylinder type electric field 7 has a more compact structure, less interference between electrodes, is less prone to short circuits, and has a larger specific area and higher adsorption efficiency.

[0056] In this embodiment, the cylindrical anode and discharge electrode are tilted to allow the adsorbed oil droplets to gather and fall, thus accelerating oil droplet collection. Simultaneously, the nozzle is tilted towards the cylindrical electrode, facilitating the rinsing of the electrode's interior.

[0057] Example 3 uses a settling-type oil-water separator instead of a centrifugal oil-water separator 11. The settling tank of the settling-type oil-water separator has multiple baffles 14 arranged in an alternating upper, lower, and upper configuration. The attached diagram shows three sets of baffles 14, which divide the settling tank into four spaces: an injection zone, a buffer zone, an oil separation zone, and a water separation zone. The injection zone connects to the oil drain pipe 13 to receive oil. The buffer zone is used to alleviate the oil pressure of the injected oil and promote initial oil-water separation; the buffer zone is equipped with heating devices 15, such as electric heating wires, steam coils, and electric heating rods; it also has aeration components 16, such as a combination of aeration pipes and an air pump. The oil separation zone has an oil tank 17 located on the side wall of the right-side baffle 14. A ramp 18 is located on the side of the oil tank 17, above the upper surface of the middle baffle 14. An oil extraction pipe extends into the oil tank 17. A drain valve is installed on the side wall of the water separation zone, and the height of the lower wall of the drain pipe does not exceed the bottom of the slope 18.

[0058] In this embodiment, the upper end of the middle partition 14 is higher than the lower ends of the two side partitions 14, and the height of the left partition 14 is between the upper and lower ends of the slope 18.

[0059] In use, the oil is first injected into the settling tank and slowly accumulates. Due to the density difference between oil and water, the oil floats to the surface. After a certain amount of oil has accumulated, as shown in the attached... Figure 3 As shown, the oil gradually submerges the slope 18 and seeps into the oil tank 17, while the water level remains below the upper end of the slope 18. The oil is drawn off by the oil extraction pipe, while the water remains in the settling tank and is discharged only through the drain valve, thus achieving oil-water separation.

[0060] Heating the oil in the buffer zone 15 at a temperature of <60℃ can reduce the oil viscosity, enhance its fluidity, accelerate oil droplet coalescence, and improve separation efficiency.

[0061] The low-pressure aeration effect of the heating device 15 in the buffer zone can accelerate the rise of the oil.

[0062] This solution also includes an intelligent monitoring and management system, which is electrically connected to the negative pressure sensor, pressure regulating valve, negative pressure device 9 drive source, and electric field 7 power supply to realize real-time monitoring, automatic adjustment and remote management of the system's operating status.

[0063] In this scheme, the air outlet of the negative pressure device 9 is connected to the air inlet of the filter box 5 via an auxiliary pipe 10 with a valve. The air outlet of the negative pressure device 9 is equipped with a flue gas detector, such as a CEMS system, to detect the filtered flue gas. If the flue gas still fails to meet the emission standards after multi-stage filtration, it will be recirculated through the auxiliary pipe 10 for further filtration until the emission standards are met.

[0064] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A fume absorption device for a mechanical transmission component, characterized in that, It includes a suction system for extracting and transporting oily fumes, a multi-stage filtration system for filtering and collecting fumes, and an oil-water separation device that connects to the multi-stage filtration system and is used to recover the collected oil. The multi-stage filtration system includes a filter box (5), which is provided with a flow equalization plate (19), a pre-filter plate (6), an electric field (7), and a post-filter plate (8) in sequence. The bottom wall of the filter box (5) is provided with a cone-shaped oil collection tray (12), and the lower end of the oil collection tray (12) is provided with an oil drain pipe (13) with a valve.

2. The oil fume absorption device for a mechanical transmission part according to claim 1, characterized in that, The pre-filter plate (6) is a primary filter screen.

3. The oil fume absorption device for a mechanical transmission part according to claim 1, characterized in that, The post-filter plate (8) is a HEPA high-efficiency filter layer.

4. The oil fume absorption device for a mechanical transmission part according to claim 1, characterized in that, Both the pre-filter plate (6) and the post-filter plate (8) can be detached and installed inside the filter box (5).

5. The oil fume absorption device for a mechanical transmission part according to claim 1, characterized in that, The oil-water separation device includes an oil-water separator, which is connected to the oil drain pipe (13).

6. The oil fume absorption device for a mechanical transmission part according to claim 1, characterized in that, The suction system includes a fan and an air pipe. The air inlet of the fan is connected to the air outlet of the filter box (5). One end of the air pipe is connected to the smoke exhaust port (2) via a pneumatic quick connector (1), and the other end is connected to the air inlet of the filter box (5).

7. The oil fume absorption device for a mechanical transmission part according to claim 6, characterized in that, The trachea is equipped with a negative pressure adjustment device.

8. The oil fume absorption device for a mechanical transmission part according to claim 6, characterized in that, The trachea is equipped with a negative pressure detection device.

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