CN110102132B - Residual oil mist separation and recovery device in oil mist lubrication and application thereof - Google Patents
Residual oil mist separation and recovery device in oil mist lubrication and application thereof Download PDFInfo
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- CN110102132B CN110102132B CN201910313838.9A CN201910313838A CN110102132B CN 110102132 B CN110102132 B CN 110102132B CN 201910313838 A CN201910313838 A CN 201910313838A CN 110102132 B CN110102132 B CN 110102132B
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/30—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
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Abstract
The invention relates to a residual oil mist separation and recovery device in oil mist lubrication and application thereof, comprising: two-stage residual fog processorThe connecting pipeline, the oil and mist inlet pipeline and the smoke pipeline are arranged; a rotary screw processor comprising: the device comprises an upper shell, a lower shell, a motor, a terminal discharge microporous membrane filter, a primary microporous membrane filter and an impeller. The residual oil mist separation and recovery device in oil mist lubrication can recover residual mist of oil mist lubrication below 5 mu m, air pollution and other potential safety hazards can be effectively reduced by using the separation and recovery device, the residual mist treatment rate is more than 98%, and the emission concentration is not more than 0.006g/m3(ii) a In addition, the device has simple structure and is easy to separate, recycle and treat.
Description
Technical Field
The invention relates to oil mist recovery equipment, in particular to a residual oil mist separation and recovery device in oil mist lubrication and application thereof.
Background
The oil mist lubrication technology is that liquid lubricating oil is atomized into small particles of 1-5 um by utilizing the energy of compressed air, and the small particles are suspended in the compressed air to form a mixture (oil mist), and the mixture is conveyed to each required part through a transmission pipeline under the pressure energy of the mixture. During the atomization process of the lubricating oil, about 5% of oil mist particles smaller than 1um exist, and most of the oil mist with the ultra-small particles is discharged along with residual mist due to the low condensation rate.
1um-5um oil mist particles are condensed into large-particle oil mist after being condensed by the condensing nozzle to participate in lubrication and less escape, so more than 90% of residual mist in an oil mist lubrication system is ultrafine oil mist particles below 1 um. Since most of the particles of 1.5um to 3.5um can be filtered by human hair, particles smaller than 0.5um can be naturally discharged during expiration, and particles of 0.5um to 1.5um can be left in human body to cause health hazard. In the mist recovery device, the part of the remaining oil mist is also required to be treated, but since the part of the remaining oil mist is small in the occupied amount, the part of the remaining oil mist is required to be accumulated for a long time so as to be directly observed with respect to the total amount of the lubricating oil consumed.
The pressure, mist concentration and particle size curves in the mist lubrication system are shown in fig. 7, the mist in the mist lubrication system is generated to the residual mist recovery oil-gas separation, which is used as the system pressure attenuation process and the gas-phase mist concentration attenuation process, but the total volume is relatively kept unchanged. The air inlet pressure of the oil mist lubrication host machine is 0.1-0.7 Mpa, the pressure of generated oil mist is 2-20 Kpa, the oil mist causes on-way pressure loss and local pressure loss due to friction and inevitable bending in the transmission process of a system pipeline, the pressure loss generated after passing through the condensation nozzle is larger, the length of a channel of the condensation nozzle is far larger than the diameter of the pipeline, the generated pressure drop causes an enough oscillation area, the oil mist is condensed into small oil drops, and the pressure of the oil mist entering the residual mist recovery device is small and is about 5 Pa.
The concentration of oil mist generated by the oil mist lubrication host machine is 1-5 g/m3The concentration of the oil mist is reduced along with the condensation of the oil mist on the pipeline wall in the process of pipeline transmission of the system; the concentration of the oil mist finally entering the residual mist recovery device is about 0.015-0.45 g/m due to the reduction of the condensation effect of the condensation nozzle3。
The current industry is environment-friendly and energy-saving, and an oil mist lubrication system is widely applied to the existing industrial lubrication as an environment-friendly, energy-saving and efficient lubrication mode. For effective lubrication, the lubricating oil undergoes pump circulation, violent collision of injection and friction pair rotating at high speed, high-temperature evaporation and the like during use, which determine that the reasons for generating the oil mist are very complicated, and mechanical, physical and chemical factors are mutually interwoven and act together. However, not all factors have a decisive influence on the production of oil mist, which can be mainly attributed to two mechanisms, atomization and evaporation: atomization is a process of converting mechanical energy into surface energy of liquid drops, and is mainly characterized in that liquid is broken by a fixed unit and a rotating unit in a system due to the violent impact of the liquid on the fixed unit and the rotating unit to form fine liquid drops floating in a working environment; evaporation occurs because the friction zone generates a large amount of heat that causes it to be at a temperature significantly above the saturation temperature, boiling at the contact surface and producing steam. These vapors then condense centered on small droplets or other particles in the surrounding air, forming an oil mist.
Generally, the oil mist generated by the mechanical atomization process mainly exists in the form of droplets, and the diameter range of the droplets is wide, usually 2-10 um. The oil vapor produced by evaporation also forms a condensed suspension of very fine diameter, typically less than 2um, during condensation. Research shows that the maximum distribution area of the oil mist particle size is 1 um.
The presence of oil mist lubrication mist residue is also polluting to the environment and therefore requires systematic recovery of the mist residue. The mist residue separation is to re-separate the mist residue lubricating the mist into oil and gas.
In the prior art, the residual oil mist is recovered by adopting an induced draft device combined with a medium filtering mode to ensure that the oil mist passes through a plurality of layers of filter media with different utilities, and the defect is as follows: (1) the filter medium is in a static state, the oleophylic medium is mostly adopted, the binding capacity with oil is strong, along with the deposition of particles in the sucked oil mist, the oil dirt is formed with the oil to block the filter layer and is difficult to clean, the air flowing capacity is gradually reduced, and the filtering efficiency is rapidly reduced; (2) the maintenance cost is high, because the filth blocks up and needs to clean the filter screen frequently (such as cleaning the coarse hole filter screen), and change the fine filter screen (disposable material), the daily maintenance and replacement cost are high, have increased personnel's maintenance cost at the same time; (3) the recovery efficiency of oil mist is low, the common filter material can only filter oil mist particles with the particle size of more than 5um, most of the particles are colloidal particles and semi-colloidal particles with various shapes and heterogeneous impurity particles, and part of the particles are even more than 20 mu m, so that the pores of a filter medium are easily blocked. During filtration, particles form a filter cake on the medium, and the filter medium is gradually blocked, passes through filter holes or is deposited in the pore channels. And to the oil mist granule below 5um, because the effect of surface tension, the granule often shows the pseudoplastic body characteristic, makes it extremely difficult to filter, and the filter media of 0.5um filter fineness can't filter the oil mist granule that the granularity is 1um usually, and its 65% of the outer oil mist of arranging among the oil mist lubrication system is the oil mist granule that the granularity is about 1 um.
Disclosure of Invention
The invention mainly aims to provide a residual oil mist separation and recovery device in oil mist lubrication and application thereof, aiming at solving the technical problem that residual mist below 5um can be effectively recovered, so that the device is more practical.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. According to the present invention, a device for separating and recovering residual oil mist in oil mist lubrication comprises: the device comprises a two-stage residual fog processor, a connecting pipeline, an oil fog inlet pipeline and a smoke pipeline; the residual fog processor comprises a filter tank, an oil tank arranged below the filter tank, a rotary spiral processor arranged in the filter tank, a self-circulating pipe communicated with the filter tank and the oil tank, and a liquid level meter arranged on the oil tank; the oil tank of the second-stage residual fog processor is connected with the filter box of the first-stage residual fog processor through a connecting pipeline, and the oil tank of the first-stage residual fog processor is connected with an oil fog inlet pipeline; a filter tank is arranged in a filter box of the secondary residual fog processor, and an outlet of the filter tank is connected with a flue gas pipeline arranged outside the filter box of the secondary residual fog processor;
the rotary screw processor comprises: the device comprises an upper shell, a lower shell, a motor, a terminal discharge microporous membrane filter, a primary microporous membrane filter and an impeller, wherein the upper shell and the lower shell are detachably connected to form a cavity, the terminal discharge microporous membrane filter is made of flexible materials and is embedded at the upper end in the upper shell, the impeller comprises blades and an impeller body, the blades are welded at the inner side of the impeller body, the upper end of the impeller body is closed, the lower end of the impeller body is provided with a screen, the side surface of the impeller body is of a screen-like structure, the gap position of each blade is embedded with the primary microporous membrane filter, the motor is fixed on the upper shell, a motor shaft is fixedly connected with the top of the impeller, the surface of each blade is provided with a plurality of micropores which are uniformly distributed, each blade sequentially comprises a guide part, a rotational flow part and a high-speed rotation condensation separation part, the lower shell is connected with an oil tank, the bottom of the lower shell is provided with an oil mist inlet and an oil mist outlet, and the top of the upper shell is of the screen structure, the primary microporous membrane filter is a flexible material.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
Preferably, in the aforementioned device for separating and recovering residual oil mist in oil mist lubrication, the oil tank is provided with a maintenance flange.
Preferably, in the device for separating and recovering residual oil mist in oil mist lubrication, a control valve is provided on an oil outlet line of the oil tank.
Preferably, in the aforementioned device for separating and recovering residual oil mist in oil mist lubrication, a liquid level sensor is disposed on the filter tank.
Preferably, in the device for separating and recovering residual oil mist in oil mist lubrication, an explosion-proof device is arranged at the top of the outer side of the filter box.
Preferably, in the residual oil mist separation and recovery device in oil mist lubrication, a bellows pressure gauge is arranged at an inlet of the oil mist inlet pipeline.
Preferably, in the device for separating and recovering residual oil mist in oil mist lubrication, the upper housing and the lower housing are connected by a snap-in connection to form a closed cavity.
Preferably, in the device for separating and recovering residual oil mist in oil mist lubrication, the lower housing is fixedly connected with the oil tank through a bolt, and the lower housing is sealed by a sealing ring during connection.
Preferably, in the device for separating and recovering residual oil mist in oil mist lubrication, the pore diameter of the micropores on the surface of the blade in the primary residual mist processor is 0.05mm, and the pore diameter of the micropores on the surface of the blade in the secondary residual mist processor is 0.01 mm.
The object of the present invention and the technical problem to be solved are also achieved by the following technical means. According to the application of the residual oil mist separation and recovery device in oil mist lubrication, the residual oil mist separation and recovery device in oil mist lubrication is applied to the residual oil mist separation and recovery in oil mist lubrication, and when the residual oil mist is separated, the rotating speed of the motor is 3000 +/-50 r/min.
By the technical scheme, the residual oil mist separation and recovery device in oil mist lubrication and the application thereof at least have the following advantages:
the residual oil mist separation and recovery device in oil mist lubrication can recover residual mist of oil mist lubrication below 5 mu m, air pollution and other potential safety hazards can be effectively reduced by using the separation and recovery device, the residual mist treatment rate is more than 98%, and the emission concentration is not more than 0.006g/m3(ii) a In addition, the device has simple structure and is easy to separate, recycle and treat.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a mist eliminator rear wall of a mist eliminator in a mist lubrication residual mist separation and recovery apparatus according to the present invention;
fig. 2 is a schematic illustration of a mist eliminator front wall of a mist eliminator in a mist lubrication mist separation and recovery apparatus according to the present invention;
fig. 3 is a schematic view showing the connection of two mist disposers in a mist lubrication mist residue mist separation and recovery apparatus according to the present invention;
FIG. 4 is a block diagram of a rotary screw processor of the present invention;
FIG. 5 is an exploded view of the rotary screw processor of the present invention;
FIG. 6 is a block diagram of the blade of the present invention, 6a is a front view of the blade, and 6b is a top view of the blade;
fig. 7 is a graph of pressure, mist concentration and particle size in an mist lubrication system.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments of the present invention for a residual oil mist separation and recovery device in oil mist lubrication, and the specific embodiments, features, structures and effects thereof applied thereto. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The materials, methods and apparatus used in the following examples, which are not specifically illustrated, are conventional in the art and are commercially available to those of ordinary skill in the art.
In the following description of the present invention, it is to be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and "upright", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the following description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be direct or indirect via an intermediate medium, or the connection may be internal to both components. To those of ordinary skill in the art, the specific meaning of the above-described terms in the present invention can be understood as a specific case.
In addition, in the following description of the present invention, the meaning of "plurality", and "plural" is two or more unless otherwise specified.
The present invention will be described in further detail with reference to the attached drawings, but the following detailed description is not to be construed as limiting the invention.
Example 1
As shown in fig. 1 to 6, an embodiment of the present invention provides a residual oil mist separation and recovery apparatus in oil mist lubrication, including: the device comprises a two-stage residual fog processor, a connecting pipeline 6, an oil fog inlet pipeline 7 and a flue gas pipeline 9; the residual fog processor comprises a filter tank 1, an oil tank 2 arranged below the filter tank, a rotary spiral processor 3 arranged in the filter tank, a self-circulation pipe 4 communicating the filter tank and the oil tank, and a liquid level meter 5 arranged on the oil tank; the oil tank of the second-stage residual fog processor A is connected with the filter box of the first-stage residual fog processor B through a connecting pipeline 6, and the oil tank of the first-stage residual fog processor A is connected with an oil fog inlet pipeline 7; a filter tank 8 is arranged in a filter box of the second-stage residual fog processor B, and the outlet of the filter tank is connected with a flue gas pipeline 9 arranged outside the filter box of the second-stage residual fog processor;
the rotary screw processor 3 includes: the device comprises an upper shell 10, a lower shell 11, a motor 12, a terminal discharge filter material 13, a primary microporous membrane filter 14 and an impeller 15, wherein the upper shell 10 and the lower shell 11 are detachably connected to form a cavity, the terminal discharge microporous filter 13 is made of flexible material and is embedded in the upper end of the upper shell 10, the impeller 15 comprises a blade 0151 and an impeller body 0152, the blade 0151 is welded on the inner side of the impeller body 0152, the upper end of the impeller body 0152 is closed, the lower end of the impeller body 0152 is provided with a screen 16, the side surface of the impeller body is of a screen-shaped structure, separated oil drops and gas are discharged from the screen on the side wall of the impeller body, the primary microporous membrane filter 14 is embedded in the gap position of each blade, the motor 12 is fixed on the upper shell 10, the shaft of the motor is fixedly connected with the top of the impeller 15, the surface of the blade 0151 is provided with a plurality of micropores 17 which are uniformly distributed, the blade 15 sequentially comprises a guide part 15a swirling part 15b and a high-speed rotation condensing separation part 15c, the lower shell 11 is connected with the oil tank 1, an oil mist inlet and outlet 18 is arranged at the part of the lower shell 11, a screen 16 is arranged on the oil mist inlet and outlet, and the top of the upper shell 10 is of a screen structure.
The terminal discharge microporous membrane filter and the primary microporous membrane filter are both made of flexible materials and can adopt polyurethane fibers, the filtration precision of the terminal discharge microporous membrane filter is 1 micron, and the filtration precision of the primary microporous membrane filter is 3 microns.
The rotary spiral processor is based on the principle of fluid mechanics, when larger oil drops in oil mist are collided and are settled downwards under the action of gravity, fine aerosol particles move downwards along with airflow under the action of centrifugal force, random particles are pushed from a high-concentration area to a low-concentration area, the high-concentration oil mist is dragged by negative pressure backflow in an airflow vortex area under the action of tangential force and is captured, the low-concentration oil mist is rectified, intercepted and diffused by a continuity and non-continuity processing unit and then is condensed into liquid to return to a collecting tank for reuse, and the continuously processed oil mist gas is acted by a multiple gravity field, so that clean gas is discharged from a terminal.
The oil mist particle separation process of the rotary spiral processor comprises the following steps:
1. and (3) cyclone liquid phase filtration: by means of a rotating spiral processor, solid and liquid particles larger than 5 microns in the aspirated media are first intercepted by a primary microporous membrane filter 14 in the processor. The pressure of rear-end multi-stage treatment is greatly reduced by thoroughly intercepting larger solid, liquid and dust particles at the front section.
2. Gas phase interception: because the oil mist particles below 3 microns have 'pseudo-plastic body' and gas phase characteristics, the traditional high-density filter material cannot be filtered. Therefore, the invention adopts high-pressure collision centrifugal separation to intercept the liquid-phase mist. The specific realization is completed by matching the three-section structure of the spiral processor blade with the fine hole condensation on the surface of the blade.
A blade guide portion: the partial structural data is manufactured by adopting structural data of the fan blade. The oil mist drainage device is designed for oil mist drainage, and meanwhile centrifugal force is given to oil mist particles through high-speed rotation of the processor, the centrifugal force is increased on the basis of self gravity of the oil mist particles, gas-liquid separation of the oil mist particles is promoted, and the part also determines the processing air volume of the processor.
Brief description of blade structure data: the blade structure data is more related to more items and is more complex, wherein the parameter directly influencing the blade performance is the optimal torsional angle beta of the blade, and the optimal torsional angle beta of the blade is the included angle between the chord line of the phyllanthus and the rotating plane. The basic calculation formula of the optimal torsion angle beta of the blade is as follows:
β＝φ-αb＝arctan(6λtx/9λt 2x2+2)-αb t
lambda is a linear velocity ratio and is a ratio of an axial component to a circumferential component of an inflow velocity v at the inlet of the blade; phi is an inflow angle and is an included angle formed by v and a rotating plane; alpha is the angle of attack and is the angle between the chord and v.
The blade cyclone part: the partial structural data adopts parabolic structural data (parabolic basic formula: y)22px, where x, y are cartesian x, y-axis values, and p is a parabolic counterpart). The design is used for promoting oil mist particles to swirl, and meanwhile, the oil mist particles are accelerated exponentially by superposing drag force on the basis of high-speed centrifugal force of the processor.
High-speed rotation condensation separation part: the part of the structure data is manufactured by adopting Archimedes curve structure data (the basic polar coordinate parameter equation of the Archimedes curve is that rho is r multiplied (w theta/v +1), wherein r radius, v peripheral speed, w linear motion speed and theta polar angle are all local variables), and the part of the structure data is designed for forming a high-speed autorotation area for the oil mist particles.
The structure of the part belongs to an oil mist core processing area, the relation of oil mist particle force fields in the area is very complex, and the oil mist particle gas-liquid separation is completed under the combined action of a plurality of forces:
(1) force of the fluid: molecular diffusion (brownian motion), turbulent diffusion, and fluid drag;
(2) interaction force between particles: van der waals and capillary attraction;
(3) an external force field: oil mist particles self-gravity, thermophoretic force and electrostatic force.
Micropores densely distributed on the surface of the blade: the part is designed to take part in the oil mist application agglomeration mechanism of the oil mist lubrication system to convert oil mist particles into liquid-phase oil drops. When oil mist particles pass through micropores on the surface of the blade, the oil mist particles are subjected to high-speed rotation and impact of a processor, on one hand, the flow area of the oil mist is sharply reduced, so that the density and the speed of the oil mist flow are increased, and the collision among the particles in the micropores is intensified; on the other hand, the oil mist particles passing at high speed collide and rub with the hole wall. These two factors will destroy the surface tension of the oil mist particles and the fine oil mist particles will coalesce into larger droplets.
End discharge microporous filter: this section is designed to filter oil droplets entrained in the high velocity air stream during terminal discharge.
Preferably, the tank is provided with a service flange port 20. The maintenance can be performed from the maintenance flange opening.
Preferably, the oil outlet line 7 of the oil tank is provided with a control valve 21.
Preferably, a level sensor 22 is provided on the filter tank.
Preferably, the top of the outer side of the filter box is provided with an explosion-proof device 23.
Preferably, a capsule pressure gauge 24 is arranged at the inlet of the oil-fog inlet pipeline.
Preferably, the upper shell and the lower shell are connected into a closed cavity through a buckle.
Preferably, the lower shell and the oil tank are fixedly connected through bolts, and the connection is sealed 19 through a sealing ring.
Preferably, the aperture of the micropores on the surface of the blade in the first-stage residual fog processor A is 0.05mm, and the aperture of the micropores on the surface of the blade in the second-stage residual fog processor B is 0.01 mm.
(II) multistage processing structure
1. Self-circulation processing structure
The waste mist treatment capacity of a common oil mist lubrication system is 50m3Less than h, and the throughput of the apparatus of the present invention is 700m3H is used as the reference value. Since the discharge capacity of the rotary screw processor is only 50m3About/h, the rest redundant quantity can be returned to the oil mist inlet and outlet of the rotary spiral processor from the circulating pipe 4 again and then enters the rotary spiral processor again for separation treatment, and the process is repeated repeatedly, so that the emission index is further ensured.
2. Bipolar processing structure
On the basis of a self-circulation structure matched with a rotary spiral processor, the processing equipment adopts two sets of processors (the difference is that the aperture of a blade micropore in a first-stage residual fog processor is 0.05mm, and the aperture of the blade micropore in the first-stage residual fog processor is 0.01mm) of a front bipolar processor and a rear bipolar processor and a self-circulation system are connected in series for use, so that the terminal emission is effectively guaranteed.
As shown in fig. 5, the process of oil mist in the rotary screw processor is: oil mist enters the rotary spiral processor from the oil mist inlet and outlet 18, the path of the oil mist entering the rotary spiral processor is a path I in fig. 5, the oil mist is centrifugally separated at a high speed through the primary microporous membrane filter 14 and the impeller 15 as shown in a path II, oil drops separated by high-speed centrifugation are sprayed on the side wall of the lower shell under the action of acceleration, then enter the oil tank along the side wall through the oil mist inlet and outlet 18 under the action of self gravity as shown in a path III, and gas after high-speed separation is filtered through a terminal and then is discharged from the top of the upper shell.
In the invention, oil mist enters an oil tank of a first-stage residual mist processor A from a tank 7, enters a rotary spiral processor from an oil mist inlet and outlet 18 for separation, separated oil drops return to the oil tank, gas enters a filter tank gas of the first-stage residual mist processor A, then enters an oil tank of a second-stage residual mist processor B from a connecting pipeline 6, then enters the rotary spiral processor of the second-stage residual mist processor B for separation, the separated gas enters a filter tank 8 for filtration, and then is discharged from a flue gas pipeline 9.
Preferably, the residual oil mist separation and recovery device in oil mist lubrication is applied to the residual oil mist separation and recovery in oil mist lubrication, and when the residual oil mist separation is performed, the rotating speed of the motor is 3000 +/-50 r/min.
Example 2
The remaining structure of the residual oil mist separation and recovery device in oil mist lubrication of the present embodiment is the same as that of embodiment 1, and the impeller is a T4-26 No3A centrifugal fan impeller in the prior art.
Example 3
The residual oil mist separation and recovery device in oil mist lubrication only adopts the first-stage residual mist processor A, and is separated by the rotary spiral processor in the first-stage residual mist processor, filtered by the filter tank and finally discharged through the flue gas pipeline 9.
As shown in fig. 1-2, an embodiment of the present invention provides a residual oil mist separation and recovery apparatus in oil mist lubrication, including: a first-stage residual fog processor A; the first-stage residual fog processor A comprises a filter tank 1, an oil tank 2 arranged below the filter tank, a rotary spiral processor 3 arranged in the filter tank, a self-circulating pipe 4 communicating the filter tank and the oil tank, and a liquid level meter 5 arranged on the oil tank; an oil tank of the primary residual fog processor A is connected with an oil fog inlet pipeline 7, a filter tank 8 is arranged in the filter tank, and an outlet of the filter tank 8 is connected with a flue gas pipeline 9 arranged outside the filter tank;
the rotary screw processor 3 includes: the device comprises an upper shell 10, a lower shell 11, a motor 12, a terminal discharge filtering material 13, a primary microporous membrane filter 14 and an impeller 15, wherein the upper shell 10 and the lower shell 11 are detachably connected to form a cavity, the terminal discharge microporous filter 13 is made of flexible material and is embedded in the upper end of the upper shell 10, the impeller 15 comprises a blade 0151 and an impeller body 0152, the blade 0151 is welded on the inner side of the impeller body 0152, the upper end of the impeller body 0152 is closed, the lower end of the impeller body 0152 is provided with a screen 16, the side surface of the impeller body 0152 is of a screen-shaped structure, a primary microporous membrane filter 14 is embedded in a gap position of each blade, the motor 12 is fixed on the upper shell 10, a shaft of the motor is fixedly connected with the top of the impeller 15, the surface of the blade 0151 is provided with a plurality of micropores 17 which are uniformly distributed, the blade 15 sequentially comprises a guide part 15a, a rotational flow part 15b and a high-speed rotation condensation separation part 15c, the lower shell 11 is connected with an oil mist inlet and outlet 18, a screen 16 is arranged on the oil mist inlet and outlet, and the top of the upper shell 10 is of a screen structure.
Example 4
The remaining structure of the residual oil mist separation and recovery apparatus in oil mist lubrication of this embodiment is the same as that of embodiment 1, and the rotary screw processor is not provided with the terminal-discharge micro-porous filter 13.
Example 5
The remaining structure of the residual oil mist separation and recovery apparatus in oil mist lubrication according to the present embodiment is the same as that of embodiment 1, and the rotary screw processor is not provided with the primary microporous membrane filter.
The residual oil mist separating and recovering apparatuses in oil mist lubrication according to embodiments 1 to 5 were used to separate and recover residual oil mist in oil mist lubrication, and when the residual oil mist was separated, the rotation speed of the motor was 3000 ± 50 rpm. And detecting the treatment rate of the residual fog and the oil content in the residual fog after treatment, wherein the test results are as follows:
after the treatment by the device in the embodiment 1, the detection shows that the treatment rate of the residual fog is more than 98 percent, and the oil content in the residual fog is less than 0.006g/m3And oil mist below 5um can be effectively separated and recovered.
After the treatment by the device in example 2, the detection shows that the treatment rate of the residual fog is 26 percent, and the oil content in the residual fog is 0.4g/m3。
After the treatment by the device in example 3, the detection shows that the treatment rate of the residual fog is 92 percent, and the oil content in the residual fog is 0.016g/m3。
After the treatment by the device in example 4, the detection shows that the treatment rate of the residual fog is 94.8 percent, and the oil content in the residual fogLess than 0.0095g/m3。
After the treatment by the device in example 5, the detection shows that the treatment rate of the residual fog is 95 percent, and the oil content in the residual fog is 0.0093g/m3。
According to the results, the residual oil mist separation and recovery device in oil mist lubrication can well treat the residual mist in the oil mist lubrication, and each index is far superior to that of the residual mist treated by other equipment.
The residual oil mist separation and recovery device ensures that the micro-positive pressure is still kept in the lubricating cavity at the tail end of the oil mist lubricating system, and the lubricated residual mist is intensively fed into the residual mist recovery device along the pipeline for unified treatment. The treatment rate of the residual fog is more than 98 percent, and the oil content in the residual fog is not more than 0.006g/m 3.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a residual oil mist among oil mist lubrication separates recovery unit which characterized in that: the method comprises the following steps: the device comprises a two-stage residual fog processor, a connecting pipeline, an oil fog inlet pipeline and a smoke pipeline; the residual fog processor comprises a filter tank, an oil tank arranged below the filter tank, a rotary spiral processor arranged in the filter tank, a self-circulating pipe communicated with the filter tank and the oil tank, and a liquid level meter arranged on the oil tank; the oil tank of the second-stage residual fog processor is connected with the filter box of the first-stage residual fog processor through a connecting pipeline, and the oil tank of the first-stage residual fog processor is connected with an oil fog inlet pipeline; a filter tank is arranged in a filter box of the secondary residual fog processor, and an outlet of the filter tank is connected with a flue gas pipeline arranged outside the filter box of the secondary residual fog processor;
the rotary screw processor comprises: the device comprises an upper shell, a lower shell, a motor, a terminal discharge microporous membrane filter, a primary microporous membrane filter and an impeller, wherein the upper shell and the lower shell are detachably connected to form a cavity, the terminal discharge microporous membrane filter is made of flexible materials and is embedded at the upper end in the upper shell, the impeller comprises blades and an impeller body, the blades are welded at the inner side of the impeller body, the upper end of the impeller body is closed, the lower end of the impeller body is provided with a screen, the side surface of the impeller body is of a screen-like structure, the gap position of each blade is embedded with the primary microporous membrane filter, the motor is fixed on the upper shell, a motor shaft is fixedly connected with the top of the impeller, the surface of each blade is provided with a plurality of micropores which are uniformly distributed, each blade sequentially comprises a guide part, a rotational flow part and a high-speed rotation condensation separation part, the lower shell is connected with an oil tank, the bottom of the lower shell is provided with an oil mist inlet and an oil mist outlet, and the top of the upper shell is of the screen structure, the primary microporous membrane filter is a flexible material;
the structural data of the blade guide part adopts fan blade data; the structural data of the blade rotational flow part adopts parabolic structural data; the high-speed rotation condensation separation part adopts Archimedes curve structure data.
2. The apparatus for separating and recovering residual oil mist in oil mist lubrication according to claim 1, wherein the oil tank is provided with a maintenance flange port.
3. The apparatus for separating and recovering residual oil mist in oil mist lubrication according to claim 1, wherein a control valve is provided in an oil outlet line of the oil tank.
4. The apparatus for separating and recovering residual oil mist in oil mist lubrication according to claim 1, wherein a liquid level sensor is provided in the filter tank.
5. The residual oil mist separation recovery device in oil mist lubrication according to claim 1, wherein an explosion-proof device is provided at the top of the outside of the filter tank.
6. The residual oil mist separation and recovery device in oil mist lubrication according to claim 1, wherein a bellows pressure gauge is provided at an inlet of the oil mist inlet pipe.
7. The device for separating and recovering the residual oil mist in the oil mist lubrication according to claim 1, wherein the upper housing and the lower housing are connected by a snap-in connection to form a closed cavity.
8. The device for separating and recovering residual oil mist in oil mist lubrication according to claim 1, wherein the lower housing is fixedly connected with the oil tank through a bolt, and the connection is sealed by a seal ring.
9. The device for separating and recovering residual oil mist in oil mist lubrication according to claim 1, wherein the pore diameter of the micropores on the surface of the blade in the primary residual mist processor is 0.05mm, and the pore diameter of the micropores on the surface of the blade in the secondary residual mist processor is 0.01 mm.
10. Use of a residual oil mist separating and recovering device for oil mist lubrication according to any one of claims 1-9 for separating and recovering residual oil mist in oil mist lubrication, wherein the motor rotates at 3000 ± 50 rpm for separating residual oil mist.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910313838.9A CN110102132B (en) | 2019-04-18 | 2019-04-18 | Residual oil mist separation and recovery device in oil mist lubrication and application thereof |
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| CN201910313838.9A CN110102132B (en) | 2019-04-18 | 2019-04-18 | Residual oil mist separation and recovery device in oil mist lubrication and application thereof |
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| CN110102132B true CN110102132B (en) | 2021-08-13 |
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| CN109758856A (en) | 2019-01-31 | 2019-05-17 | 青岛理工大学 | A kind of recycling of micro lubricating Grinding Process mist of oil, separation and purification device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ITMI981622A1 (en) * | 1998-07-14 | 2000-01-14 | Losma S R L | EXTRACTOR FOR OILY MIST PARTICULARLY FOR MACHINE TOOLS AND SIMILAR |
| JP2010279910A (en) * | 2009-06-05 | 2010-12-16 | Ohm Denki Kk | Apparatus for removing oil mist |
| CN202289711U (en) * | 2011-09-28 | 2012-07-04 | 重庆大鼎鼓风机有限公司 | Rotary type water mist-gathering and droplet-forming separator |
| CN207169322U (en) * | 2017-03-30 | 2018-04-03 | 绍兴市舜通环境科技有限公司 | A kind of vertical oil mist collector |
| CN208193886U (en) * | 2018-02-05 | 2018-12-07 | 西南石油大学 | A kind of spiral demister |
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