CN108452627B - Oil mist separation device - Google Patents
Oil mist separation device Download PDFInfo
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- CN108452627B CN108452627B CN201810441596.7A CN201810441596A CN108452627B CN 108452627 B CN108452627 B CN 108452627B CN 201810441596 A CN201810441596 A CN 201810441596A CN 108452627 B CN108452627 B CN 108452627B
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- 239000003595 mist Substances 0.000 title claims abstract description 81
- 238000000926 separation method Methods 0.000 title claims abstract description 68
- 238000001914 filtration Methods 0.000 claims abstract description 45
- 230000001105 regulatory effect Effects 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000003749 cleanliness Effects 0.000 claims abstract description 9
- 238000005336 cracking Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 196
- 230000009471 action Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 230000036541 health Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
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- 239000000835 fiber Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 208000010201 Exanthema Diseases 0.000 description 1
- 206010023825 Laryngeal cancer Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 201000005884 exanthem Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 206010023841 laryngeal neoplasm Diseases 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
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- 206010037844 rash Diseases 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention provides an oil mist separation device, which comprises an oil tank, a fan, a primary separation device, a secondary separation device, a pressure regulating pipeline, a safety pipeline and a pressure detection device, wherein the primary separation device is connected with the oil tank; the device adopts the mode of matching the primary separation device and the secondary separation device to filter the oil mist in the oil tank, improves the filtering efficiency of the oil mist, and can filter the oil mist by adopting the secondary separation device when the fan fails and can not exhaust, thereby avoiding the direct discharge of the oil mist in the oil tank and ensuring the cleanliness of exhaust; and the pressure detection device is used for detecting the pressure in the oil tank, the system pressure and the pressure difference between the pressure detection device and the system pressure, and when the pressure value and the pressure difference value exceed set values, the alarm prompt is timely overhauled, so that the stability of the equipment is improved.
Description
Technical Field
The invention relates to the technical field of oil mist, in particular to an oil mist separation device.
Background
The oil mist separating device, also called an oil mist separator, an oil mist recycling machine and an oil mist collector, is arranged on various machining equipment such as a CNC machining center, a cleaning machine, a die casting machine, a CNC lathe and the like, and can absorb oil mist in a machining cavity or an oil tank, so that the purposes of purifying air and protecting the health of workers are achieved. With the development of industry and commerce, the increase of working machines and machines is rapid, the improvement of national people is relatively required to have a comfortable working environment, and the oil mist generated by general working machines can generate diseases such as lung, liver, laryngeal cancer and the like after being inhaled into human bodies for a long time, and can induce chronic ophthalmic diseases, skin oil rash and the like; the oil mist recycling machine not only can improve the working efficiency, but also can create a comfortable working environment; particularly in industries such as metallurgy, machinery, petrochemical industry and the like, large-scale gear boxes, bearings and sliding shoes are required to be lubricated by using lubricating oil, the lubricating oil is generally supplied by adopting a circulating centralized oil supply mode, and is brought back to a centralized oil tank by a gear box and other devices, a large amount of friction heat is brought back to the centralized oil tank, and the hot oil return forms oil mist in the oil tank, so that the oil mist not only forms positive pressure inside the oil tank to prevent the oil return of the lubricating oil, but also directly discharges the lubricating oil to influence the surrounding environment and generate potential safety hazards, and therefore, an oil mist separation device is required to be configured, for example, patent 'CN 202446937' discloses an oil mist separator suitable for effectively treating the oil mist in the oil tank, and the oil mist separator comprises the following components: the oil-gas separator is characterized in that an inlet is connected with the top of an oil return tank, an air outlet of the oil-gas separator is connected with an air inlet end of an explosion-proof fan, an oil outlet at the bottom of the oil-gas separator is connected with an oil return inlet at the top of the oil return tank through an oil return pipe, a control valve is arranged on the oil return pipe, oil mist is pumped out of the oil tank through the fan, meanwhile, the oil mist is filtered before the oil mist passes through the fan, the oil mist is separated into air and oil drops through a filter element, the air is discharged through the fan, the oil drops return to the oil tank, the filter element of the oil mist separator is formed by sintering glass fiber materials, and the fine structural arrangement of the oil mist can effectively change the oil mist into the oil drops, so that the oil mist is removed, and clean air is discharged; the device can separate the oil mist, but separation efficiency is only 90%, and when the fan breaks down, because the resistance of filter core is great, the oil mist can't pass through the filter core, often directly discharges in the air, pollutes surrounding environment, brings health hidden danger for operating personnel, influences the safe operation of equipment, brings the operational risk for the enterprise.
Disclosure of Invention
To overcome the following problems in the prior art: the existing device can separate oil mist, but the separation efficiency is only 90%, and when a fan breaks down, the oil mist cannot pass through the filter element due to the fact that the resistance of the filter element is large, and is often directly discharged into the air to pollute the surrounding environment, health hidden danger is brought to operators, and the safe operation of equipment is affected. The invention provides an oil mist separation device which is characterized by comprising an oil tank, a fan, a primary separation device, a secondary separation device and a safety pipeline, wherein the primary separation device is connected with the oil tank; the first-stage separation device comprises a first filtering device, an air inlet pipeline and a first oil return pipeline, wherein the lower end of the air inlet pipeline is connected with the oil tank, the upper end of the air inlet pipeline is connected with the lower part of the filtering device, the upper part of the filtering device is connected with the fan, the lower end of the first oil return pipeline is connected with the oil tank, and the upper end of the first oil return pipeline is connected with the middle lower part of the first filtering device; the secondary separation device comprises a second filtering device, an exhaust pipeline and a second oil return pipeline, wherein the lower end of the second filtering device is connected with the fan, the lower end of the exhaust pipeline is connected with the second filtering device, the upper end of the exhaust pipeline is directly connected with air, the upper end of the second oil return pipeline is connected with the second filtering device, and the lower end of the second oil return pipeline is connected with the oil tank.
On the basis, the exhaust pipeline is a vertical pipeline, the upper end part of the exhaust pipeline is a section of circular arc, the opening of the exhaust pipeline is downward, the height of the exhaust pipeline is H, and the range of H is 12-20 m.
On the basis, the second filter device is a collision type filter device, and the collision type filter device is a spiral pipeline or a zigzag baffle pipeline.
On the basis, the second oil return pipeline comprises a second stop valve and a third filter device, and the third filter device is a filter screen and ensures the cleanliness of oil return of the oil tank.
On this basis, the fan includes fan air intake and fan air outlet, fan air intake is connected with filter equipment one, the fan air outlet is connected with filter equipment two.
On the basis, the first filtering device comprises a shell and a filter element, wherein the filter element is positioned in the shell, the filter element divides the inner part of the shell into an upper part and a lower part, and the filter element is a coalescing filter element.
On this basis, be provided with casing air intake, casing air outlet first, casing air outlet second, casing air outlet third and casing oil return opening on the casing, casing air intake, casing air outlet second, casing air outlet third are located the lower part of casing, casing air outlet first is located the upper portion of casing, the casing oil return opening is located the bottom of filter core, casing air intake and air inlet line connection, casing air outlet first and fan air intake connection.
On this basis, still include the pressure regulating pipeline, pressure regulating pipeline one end is connected with filter equipment's air intake, and the other end is connected with filter equipment's casing air outlet two, the pressure regulating pipeline includes negative pressure automatic regulating apparatus, negative pressure automatic regulating apparatus is for the check valve one that has certain cracking pressure, the air inlet end and the filter equipment's of check valve one air intake connection, the exhaust end and the filter equipment's of check valve one casing air outlet two are connected.
On the basis, the safety pipeline comprises a safety device, the safety device is a second check valve, the air inlet end of the second check valve is connected with the air outlet of the first shell of the filtering device, and the air outlet end of the second check valve is connected with the air inlet of the second filtering device.
On this basis, still include pressure detection device, pressure detection device includes differential pressure transmitter one, differential pressure transmitter two and controlling means, differential pressure transmitter one is installed on the intake pipe way, differential pressure transmitter two is installed in filter equipment one's upper end, differential pressure transmitter one, differential pressure transmitter two are connected with controlling means electricity.
Compared with the prior art, the invention has the beneficial effects that:
1. the oil mist in the oil tank is filtered by adopting the mode of matching the primary separation device and the secondary separation device, so that the oil mist filtering efficiency is improved, and when a fan breaks down, the secondary separation device can be used for filtering the oil mist, so that the direct discharge of the oil mist in the oil tank is avoided, and the cleanliness of exhaust gas is ensured.
2. The pressure regulating pipeline and the safety pipeline are adopted to regulate the pressure in the oil tank and the pressure of the system, so that the automatic regulation of the internal pressure is realized, the pressure of the oil tank and the pressure of the system are in a controllable range, the adaptability of the system is improved, and the stable operation of the system is ensured.
3. The pressure detection device is used for detecting the pressure in the oil tank, the pressure in the system and the pressure difference between the pressure and the pressure, and when the pressure value and the pressure difference value exceed set values, the system is timely maintained by warning, so that the stability of the system is improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of a housing according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a second embodiment of a filtering apparatus;
in the figure: 1. the oil tank, 11, the oil mist outlet, 12, the first-stage separation device oil return port, 13, the second-stage separation device oil return port, 2, the fan, 21, the fan air intake, 22, the fan air outlet, 3, the first-stage separation device, 31, the first filter device, 311, the housing, 3111, the housing air intake, 3112, the housing air outlet, 3113, the housing air outlet, 3114, the housing air outlet, 3115, the housing oil return port, 312, the filter element, 32, the air inlet pipeline, 33, the oil return pipeline, 331, the first stop valve, 4, the second-stage separation device, 41, the second filter device, 42, the exhaust pipeline, 43, the second return pipeline, 431, the filter screen, 432, the second stop valve, 5, the pressure regulating pipeline, 51, the automatic negative pressure regulating device, 6, the safety pipeline, 61, the safety device, 7, the pressure detecting device, 71, the differential pressure transmitter, 72, the differential pressure transmitter, 73, the control device
Detailed Description
The invention will be described in further detail below with reference to the drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1-3, the present invention schematically shows an oil mist separation device.
The invention discloses an oil mist separating device, which comprises an oil tank 1, a fan 2, a primary separating device 3, a secondary separating device 4, a pressure regulating pipeline 5, a safety pipeline 6 and a pressure detecting device 7, wherein the primary separating device 3 is connected with the oil tank 1, one end of the fan 2 is connected with the primary separating device 3, the other end of the fan is connected with the secondary separating device 4 and is used for sucking oil mist in the oil tank, the primary separating device 3 and the secondary separating device 4 are used for filtering oil in the oil mist to ensure the cleanliness of exhaust, a pressure regulating pipeline 5 and a safety pipeline 6 are arranged between the primary separating device 3 and the secondary separating device 4, the pressure regulating pipeline 5 is used for regulating the negative pressure in the oil tank 1, so that the oil suction caused by overlarge negative pressure of the oil tank 1 is avoided, the working load of the primary separating device 3 and the secondary separating device 4 is increased, the safety pipeline 6 is used for guaranteeing the pressure in the oil tank 1, when the fan 2 is prevented from being failed, as the resistance of the primary separation device 3 is larger, oil mist cannot pass through the primary separation device 3 and is accumulated in the oil tank 1, so that potential safety hazards are generated due to the fact that the pressure in the oil tank 1 is overlarge, the pressure detection device 7 is connected with the primary separation device 3 in parallel and is used for detecting the pressure and the pressure difference of the primary separation device 3, the pressure in the oil tank 1 and the system pressure are guaranteed to be in a stable range, the stable operation of the system is guaranteed, when the fan 2 is failed, the safety pipeline 6 is opened, the oil mist enters the secondary separation device 4 through the safety pipeline 6 to be filtered, the potential safety hazards caused by the overlarge pressure in the oil tank 1 are avoided, meanwhile, the cleanliness of the exhaust of the oil tank 1 is guaranteed, and the performance of the whole device is improved; the oil tank 1 is of a self-closed tank body structure, oil is filled in the oil tank 1, oil mist is filled between the upper surface of the oil mist and the inner surface of the oil tank 1, the upper surface of the oil tank 1 is provided with an oil mist outlet 11 penetrating through the upper surface and the lower surface, a primary separation device oil return port 12 and a secondary separation device oil return port 13, the oil mist outlet 11 and the primary separation device oil return port 12 are connected with the primary separation device 3, the secondary separation device oil return port 13 is connected with the secondary separation device 4, the oil mist is extracted from the oil tank 1 under the action of the fan 2 and then sequentially enters the primary separation device 3 and the secondary separation device 4, the oil mist in the oil mist is condensed into oil drops under the action of the primary separation device 3 and the secondary separation device 4, and returns to the oil tank 1 through the primary separation device oil return port 12 and the secondary separation device oil return port 13 respectively under the action of gravity, and clean gas is discharged into the air under the action of the fan 2; the fan 2 comprises a fan air inlet 21 and a fan air outlet 22, the fan air inlet 21 is connected with the primary separation device 3, and the fan air outlet 22 is connected with the secondary separation device 4, so that oil mist can be sucked out of the oil tank 1, and the fan 2 can be an explosion-proof fan as a preferred item of the embodiment, so that the safety of the whole system is improved; the first-stage separation device 3 is mainly used for filtering oil mist, the filtering efficiency of the first-stage separation device is 90%, the first-stage separation device 3 comprises a first filtering device 31, an air inlet pipeline 32 and an oil return pipeline I33, one end of the air inlet pipeline 32 is connected with the first filtering device 31, the other end of the air inlet pipeline 32 is connected with an oil mist outlet 11 of the oil tank 1, one end of the oil return pipeline I33 is connected with the first filtering device 31, the other end of the oil return pipeline I33 is connected with an oil return port 12 of the first-stage separation device of the oil tank 1, oil mist in the oil tank 1 enters the first filtering device 31 through the air inlet pipeline 32 for filtering, filtered gas enters a fan 2, the filtered oil returns to the oil tank 1 through the first oil return pipeline 33, the first oil return pipeline 33 is a section of pipeline, and a stop valve I331 is arranged on the oil return pipeline for controlling the on-off of the first oil return pipeline 33; the first filtering device 31 is a filter element type filtering device, the first filtering device 31 comprises a shell 311 and a filter element 312, as shown in fig. 2, the filter element 312 is positioned in the shell 311, the interior of the shell 311 is divided into an upper part and a lower part, the upper part is communicated with the fan 2, and the lower part is communicated with the oil tank 1; the filter element 312 is a coalescing filter element, the material of which is glass fiber or polyester fiber subjected to surface treatment, a tortuous channel is formed for air flow through a special design structure, liquid fog drops are forced to be captured by superfine fibers under the actions of three filtering mechanisms of inertial collision, diffusion interception and direct interception, the liquid surface tension enables small liquid drops to be aggregated into large liquid drops, and the large liquid drops are settled to the bottom of the filter element due to the action of gravity, so that the filtering effect is realized; the shell 311 is a closed cavity, the upper part of the shell 311 is provided with a shell air inlet 3111, a shell air outlet 3112, a shell air outlet 3113, a shell air outlet 3114 and a shell oil return port 3115, the shell air inlet 3111, the shell air outlet 3113 and the shell air outlet 3114 are positioned at the lower part of the shell 311, the shell air outlet 3112 is positioned at the upper part of the shell 311, the shell oil return port 3115 is positioned at the bottom of the filter element 312, the shell air outlet 3112 is connected with a fan air inlet 21 of the fan 2, thus ensuring that oil mist in the oil tank 1 is sucked out and filtered through the filter element 312, the shell oil return port 3115 is connected with an oil return pipeline 33, ensuring that oil filtered by the filter element 312 can be smoothly returned, the shell air inlet 3111 is connected with an air inlet pipeline 32 and used for introducing oil mist into the shell 311, the shell air outlet 3113 is connected with a pressure regulating pipeline 5 and used for introducing air quantity entering a secondary separation device 4 into the shell 311, avoiding that the oil mist 1 is excessively pressurized to cause oil suction, the shell air outlet 3114 is connected with a safety pipeline 6 and is used for directly introducing the secondary separation device into the secondary separation device 4 to the negative pressure to the fan 2 to avoid that excessive oil mist is excessively pressurized to cause that the secondary separation can cause the excessive working potential safety hazard and the filter effect is avoided; the rear of the fan 2 is provided with a secondary separation device 4, the secondary separation device 4 comprises a second filter device 41, an exhaust pipeline 42 and a second oil return pipeline 43, one end of the exhaust pipeline 42 is connected with the second filter device 41, the other end of the exhaust pipeline 42 is directly connected with the atmosphere, one end of the second oil return pipeline 43 is connected with the second filter device 41, the other end of the second oil return pipeline is connected with an oil return port 13 of the secondary separation device of the oil tank 1, the exhaust pipeline 42 is a vertical exhaust pipeline, the upper end of the exhaust pipeline is provided with an arc bending, so that impurities are not easy to enter the interior of the exhaust pipeline through a pipe orifice, the height H of the exhaust pipeline 42 is 12m, fine oil which is not filtered cleanly in the exhaust is convenient to condense and adsorb in the interior of the exhaust pipeline 42 under the action of gravity, the second oil return pipeline 43 is an oil pipe at one end, a filter screen 431 and a stop valve second 432 are arranged on the second oil return pipeline 431 is used for filtering the oil in the oil tank 1, the second stop valve 432 is used for controlling the on-off of the second oil return pipeline 43, the second filter device 41 is a collision type filter device, an air inlet is arranged at the lower part of the second filter device and is connected with the air outlet 22 of the fan, the air in the air outlet 22 of the fan is introduced into the second filter device 41, the collision type filter device is a section of spiral pipeline, as shown in fig. 3, when the air moves in the spiral pipeline, the air continuously collides with the inner wall of the spiral pipeline, so that tiny oil in the air is adsorbed in the spiral pipeline, the air is filtered, as another implementation mode of the embodiment, the collision type filter device is a pipeline with a 'Chinese character' shaped baffle, when the air moves in the inner part, the air continuously collides with the lower surface of the baffle, the fine oil in the gas is adsorbed on the lower surface of the baffle plate and flows back to the bottom under the action of gravity, so that the gas is filtered, the second filtering device 41 is matched with the exhaust pipeline 42, the gas filtered by the first-stage separating device 3 is filtered again, the cleanliness of the discharged gas is guaranteed, the filtering precision of the oil mist separating device is improved, and when the fan 2 breaks down, the oil mist in the oil tank 1 directly enters the second-stage separating device 4 through the safety pipeline 6 to be filtered, the direct discharge of the oil mist in the oil tank 1 is avoided, the cleanliness of the exhaust is improved, and the performance of the oil mist separating device is guaranteed; a pressure regulating pipeline 5 is arranged between the first-stage separation device 3 and the second-stage separation device 4, one end of the pressure regulating pipeline 5 is connected with an air inlet of the second filter device 41, the other end of the pressure regulating pipeline 5 is connected with a shell air outlet of the first filter device 31, a negative pressure automatic regulating device 51 is arranged on the pressure regulating pipeline 5, the negative pressure automatic regulating device 51 is a one-way valve I with a certain opening pressure, an air inlet end of the one-way valve I is connected with the air inlet of the second filter device 41, an air outlet end of the one-way valve I is connected with the shell air outlet of the second filter device 31, when the air exhaust volume of the fan 2 is relatively large, the oil mist generated in the oil tank 1 is relatively small, the discharged gas is larger than the entering gas, so that negative pressure is formed in the oil tank 1, when the negative pressure is lower than a certain set value, the gas pressure difference at two ends of the one-way valve I is larger than the opening pressure of the one-way valve I, the gas enters the lower part of the shell of the first filter device 31 to make up the defect in the oil tank 1, the oil mist is avoided, the oil mist in the first-stage separation device 3 and the working fraction 4 are greatly increased; a safety pipeline 6 is further arranged between the primary separation device 3 and the secondary separation device 4, one end of the safety pipeline 6 is connected with an air inlet of the second filter device 41, the other end of the safety pipeline 6 is connected with a third air outlet 3114 of the first shell of the first filter device 31, the safety pipeline 6 comprises a safety device 61, the safety device 61 is a second check valve, an air inlet end of the second check valve is connected with the third air outlet 3114 of the first shell of the first filter device 31, and an air outlet end of the second check valve is connected with the air inlet of the second filter device 41; when the fan 2 cannot exhaust normally or the exhaust air quantity of the fan 2 is smaller than the oil mist generated in the oil tank 1, the oil mist in the oil tank 1 is continuously increased to cause positive pressure in the oil tank 1, so that the safety and oil return of the oil tank 1 are affected, when the pressure in the oil tank 1 is larger than the pressure of the air inlet of the second filtering device 41, the second check valve is opened, air enters the air inlet of the second filtering device 41 from the air outlet 3114 of the shell, potential safety hazards caused by overlarge pressure in the oil tank 1 are avoided, and the oil return of the oil tank 1 and the safety of the whole system are ensured; the side of the primary separation device 3 is provided with a pressure detection device 7 in parallel, the pressure detection device 7 comprises a first differential pressure transmitter 71, a second differential pressure transmitter 72 and a control device 73, the first differential pressure transmitter 71 and the second differential pressure transmitter 72 are electrically connected with the control device 73, the first differential pressure transmitter 71 is arranged on the air inlet pipeline 32, the second differential pressure transmitter 72 is arranged at the upper end of a shell 311 of the first filtering device 31, and when the detection value of the first differential pressure transmitter 71 and the second differential pressure transmitter 72 or the differential pressure between the two exceeds a set value, the control device 73 sends an alarm signal to remind operators of overhauling and maintaining, and the normal operation of the system is ensured.
The device adopts the mode of matching the primary separation device 3 and the secondary separation device 4 to filter the oil mist in the oil tank 1, improves the filtering efficiency of the oil mist, can filter the oil mist by adopting the secondary separation device 4 when the fan 2 fails and can not exhaust, avoids the direct discharge of the oil mist in the oil tank 1, and ensures the cleanliness of exhaust; the pressure regulating pipeline 5 and the safety pipeline 6 are adopted to regulate the pressure in the oil tank 1 and the system pressure, so that the automatic regulation of the internal pressure is realized, and the adaptability of the system is improved; meanwhile, the pressure detection device 7 is used for detecting the pressure in the oil tank 1, the system pressure and the pressure difference between the pressure and the system pressure, and when the pressure value and the pressure difference value exceed set values, the alarm prompt is timely overhauled, so that the stable operation of equipment is ensured.
While the foregoing description illustrates and describes the preferred embodiments of the present invention, as noted above, it is to be understood that the invention is not limited to the forms disclosed herein but is not to be construed as excluding other embodiments, and that various other combinations, modifications and environments are possible and may be made within the scope of the inventive concepts described herein, either by way of the foregoing teachings or by those of skill or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (7)
1. The oil mist separating device is characterized by comprising an oil tank (1), a fan (2), a primary separating device (3), a secondary separating device (4) and a safety pipeline (6), wherein the primary separating device (3) is connected with the oil tank (1), one end of the fan (2) is connected with the primary separating device (3), the other end of the fan is connected with the secondary separating device (4), one end of the safety pipeline (6) is connected with the primary separating device (3), the other end of the safety pipeline is connected with the secondary separating device (4), and one end of the secondary separating device (4) is connected with the oil tank (1); the primary separation device (3) comprises a first filtering device (31), an air inlet pipeline (32) and a first oil return pipeline (33), wherein the lower end of the air inlet pipeline (32) is connected with the oil tank (1), the upper end of the air inlet pipeline (32) is connected with the lower part of the first filtering device (31), the upper part of the filtering device is connected with the fan (2), the lower end of the first oil return pipeline (33) is connected with the oil tank (1), and the upper end of the first oil return pipeline (33) is connected with the middle lower part of the first filtering device (31); the secondary separation device (4) comprises a second filtering device (41), an exhaust pipeline (42) and a second oil return pipeline (43), wherein the lower end of the second filtering device (41) is connected with the fan (2), the lower end of the exhaust pipeline (42) is connected with the second filtering device (41), the upper end of the exhaust pipeline (42) is directly connected with air, the upper end of the second oil return pipeline (43) is connected with the second filtering device (41), and the lower end of the second oil return pipeline (43) is connected with the oil tank (1); the fan (2) comprises a fan air inlet (21) and a fan air outlet (22), the fan air inlet (21) is connected with a first filter device (31), and the fan air outlet (22) is connected with a second filter device (41); the first filtering device (31) comprises a shell (311) and a filter element (312), the filter element (312) is positioned in the shell (311), the filter element (312) divides the interior of the shell (311) into an upper part and a lower part, and the filter element (312) is a coalescing filter element; be provided with casing air intake (3111), casing air outlet one (3112), casing air outlet two (3113), casing air outlet three (3114) and casing oil return opening (3115) on casing (311), casing air intake (3111), casing air outlet two (3113), casing air outlet three (3114) are located the lower part of casing (311), casing air outlet one (3112) is located the upper portion of casing (311), casing oil return opening (3115) are located the bottom of filter core (312), casing air intake (3111) are connected with air inlet line (32), casing air outlet one (3112) is connected with fan air intake (21).
2. An oil mist separating apparatus as set forth in claim 1, wherein: the exhaust pipeline (42) is a vertical pipeline, the upper end part of the exhaust pipeline is a section of circular arc, the opening of the exhaust pipeline (42) is downward, the height of the exhaust pipeline (42) is H, and the range of H is 12-20 m.
3. An oil mist separating apparatus as set forth in claim 1, wherein: the second filter device (41) is a collision type filter device, and the collision type filter device is a spiral pipeline or a zigzag baffle pipeline.
4. An oil mist separating apparatus as set forth in claim 1, wherein: the second oil return pipeline (43) comprises a second stop valve (432) and a third filter device, and the third filter device is a filter screen (431) and ensures the cleanliness of oil return of the oil tank (1).
5. An oil mist separating apparatus as set forth in claim 1, wherein: still include pressure regulating pipeline (5), pressure regulating pipeline (5) one end is connected with the air intake of filter equipment two (41), and the other end is connected with casing air outlet two (3113) of filter equipment one (31), pressure regulating pipeline (5) include negative pressure automatic regulating apparatus (51), negative pressure automatic regulating apparatus is for the check valve one that has certain cracking pressure, the air inlet of check valve one is connected with the air intake of filter equipment two (41), the exhaust end of check valve one is connected with casing air outlet two (3113) of filter equipment one (31).
6. An oil mist separating apparatus as set forth in claim 1, wherein: the safety pipeline (6) comprises a safety device (61), the safety device (61) is a second check valve, an air inlet end of the second check valve is connected with a third air outlet 3114 of a shell of the first filter device (31), and an air outlet end of the second check valve is connected with an air inlet of the second filter device (41).
7. An oil mist separating apparatus as set forth in claim 6, wherein: the pressure detection device (7) comprises a first pressure difference transmitter (71), a second pressure difference transmitter (72) and a control device (73), wherein the first pressure difference transmitter (71) is arranged on the air inlet pipeline (32), the second pressure difference transmitter (72) is arranged at the upper end of the first filtering device (31), and the first pressure difference transmitter (71), the second pressure difference transmitter (72) and the control device (73) are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810441596.7A CN108452627B (en) | 2018-05-10 | 2018-05-10 | Oil mist separation device |
Applications Claiming Priority (1)
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| CN110017423A (en) * | 2019-05-13 | 2019-07-16 | 徐少文 | A kind of differential pressure adjusting device and oil mist system of residual mist recovery system |
| CN110433589A (en) * | 2019-07-23 | 2019-11-12 | 昆山钛锟环保节能科技有限公司 | Waste liquid automatic deslagging system |
| CN111530224B (en) * | 2020-05-15 | 2024-04-16 | 沈阳飞机工业（集团）有限公司 | Gas and oil mist separation device for aircraft emergency control system and use method thereof |
| CN113877378A (en) * | 2021-10-23 | 2022-01-04 | 亚普汽车部件股份有限公司 | Fuel oil recovery system based on liquid-gas separator and vehicle |
| CN114788973B (en) * | 2022-02-28 | 2023-08-01 | 常州市华立液压润滑设备有限公司 | Jet type oil mist separator |
| CN115183142A (en) * | 2022-08-10 | 2022-10-14 | 常州市华立液压润滑设备有限公司 | Oil mist lubrication system and working method thereof |
| CN117753143B (en) * | 2024-02-22 | 2024-05-28 | 杭州汽轮新能源有限公司 | Intelligent oil mist removing system of lubricating oil tank of combustion engine and control method thereof |
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