CN111821746A - Cooling oil cleaning process and treatment equipment thereof - Google Patents
Cooling oil cleaning process and treatment equipment thereof Download PDFInfo
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- CN111821746A CN111821746A CN202010757929.4A CN202010757929A CN111821746A CN 111821746 A CN111821746 A CN 111821746A CN 202010757929 A CN202010757929 A CN 202010757929A CN 111821746 A CN111821746 A CN 111821746A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
- B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
- B01D33/64—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
Abstract
The invention discloses a cooling oil cleaning process and a treatment device thereof, comprising the following steps: step one, standing: fine scraps are combined with each other to form large-particle scraps; step two, mixing solid and liquid: blowing air into the dirty oil by an air blowing device to form suspension; step three, normal pressure filtration: pumping the turbid liquid into a filtering and cleaning device, filtering the turbid liquid by a filter screen to form clean oil and mill ash, flowing the clean oil into an oil collecting pool, and spreading the mill ash on the filter screen; step four, high-pressure filtration: covering a sealing cover on the filter screen, forming a pressurizing chamber between the sealing cover and the filter screen, pressurizing the pressurizing chamber by a pressurizing device, compacting soft grinding ash into grinding ash blocks, and enabling cooling oil to flow into an oil collecting pool after separating from the grinding ash blocks; step five, separating the grinding ash block: the sealing cover is reset, the filter screen rotates, and the grinding block is separated from the filter screen. The invention has the following advantages and effects: the impurity content in the clean oil can be reduced from 6.5 per mill to 0.8 per mill to 1 per mill, and the clean oil has the effects of higher cleanliness, energy consumption and lower cost.
Description
Technical Field
The invention relates to the technical field of oil treatment, in particular to a cooling oil cleaning process and a cooling oil treatment device.
Background
The bearing mainly comprises an inner ring, an outer ring and a steel ball arranged between the inner ring and the outer ring, wherein the inner ring and the outer ring of the bearing are mainly formed by processing a bar material or a pipe material, the processes of turning, heat treatment, grinding, lapping or polishing and the like are usually needed, and the steel ball processing process usually comprises bar material or wire cold punching, filing, coarse grinding, soft grinding or smooth ball, heat treatment, hard grinding, fine grinding, lapping or grinding and rust-proof treatment. In the bearing processing process, a plurality of processing procedures such as filing, fine grinding and the like need to cool the bearing washing in the processing process through cooling oil, so the consumption and consumption of the cooling oil are extremely large, and a large amount of fragments such as grinding wheel ash, scrap iron and the like and a small amount of magnetic fragments are mixed in the cooling oil after cooling treatment. In order to reduce the production cost, a producer adopts clean filtering equipment to filter impurities in the cooling oil, and in the prior art, the scraps in the cooling oil are filtered and removed by adopting a non-woven fabric filtering mode, but the filtering effect is poor, and the impurity content of the filtered cooling oil is about 6.5 per thousand.
The traditional Chinese patent with publication number CN106362476B discloses a cutting fluid circulating filter, which comprises a frame, wherein a non-woven fabric roll, a mesh belt transmission shaft, a servo motor, a fluid inlet box, a secondary filter box, a magnetic liquid level sensor, a driven shaft, a mesh belt tensioner, a transmission mesh belt and a support net frame are arranged on the frame, a fluid collecting box is arranged below the frame and comprises a fluid outlet hole and a sewage outlet hole, the fluid outlet hole is communicated with a self-priming pump through a pipeline, a waste material box is arranged on the right side of the fluid collecting box, and cutting fluid is filtered through the secondary filter box and the non-woven fabric.
Disclosure of Invention
The invention aims to provide a cooling oil cleaning process which has the effect of high cleanliness. Another object of the invention is to provide a cleaning device for cooling oil which has the effect of being less costly and energy consuming.
The technical purpose of the invention is realized by the following technical scheme: a cooling oil cleaning process comprising the steps of:
step one, standing: standing the dirty oil mixed with the scraps in a dirty oil pool to enable the fine scraps to be combined with each other to form large-particle scraps;
step two, mixing solid and liquid: blowing air into the dirty oil mixed with the scraps through an air blowing device to enable the scraps in the cooling oil to be uniformly suspended in the dirty oil to form suspension;
step three, normal pressure filtration: pumping the turbid liquid into a filtering and cleaning device, filtering the turbid liquid through a filter screen to form clean oil and grinding dust, wherein the clean oil flows into an oil collecting pool under the self gravity, and the grinding dust is paved on the upper surface of the filter screen;
step four, high-pressure filtration: covering a sealing cover on the filter screen, forming a pressurizing chamber between the sealing cover and the filter screen, pressurizing the pressurizing chamber through a pressurizing device, compacting soft grinding dust into grinding dust blocks, separating the grinding dust from cooling oil attached to the grinding dust under high pressure, and allowing clean cooling oil to flow into an oil collecting pool to dry the grinding dust blocks;
step five, separating the grinding ash block: the sealing cover is reset, the filter screen rotates, and the grinding ash blocks on the filter screen are separated from the filter screen under the self gravity.
By adopting the technical scheme, dirty oil containing a large amount of scraps is subjected to normal pressure filtration and high pressure filtration, clean oil is collected in the oil collecting tank for recycling of a workshop, and an ash grinding block on the filter screen rotates along with the filter screen and falls off from the filter screen under the self gravity, so that a large amount of dirty oil can be cleaned by one-time filtration, and the cleaning efficiency is high, and the recovery rate of the clean oil is high; compared with the soft grinding ash, the grinding ash block compressed by high pressure is easier to fall off from the filter screen and is easier to collect, and in addition, compared with the prior art, the impurity content in the clean oil can be reduced from 6.5 per mill originally to 0.8 per mill to 1 per mill, so that the recovery quality of the clean oil is greatly improved, and the effect of higher cleanliness is achieved.
The invention is further provided with: and in the step one, standing the dirty oil mixed with the waste chips in a dirty oil pool for 3-4 hours.
By adopting the technical scheme, the longer the time for the waste scraps to stand in the dirty oil tank is, the larger the combined particle diameter is, and the quick filtration is convenient.
The invention is further provided with: the particle size of the large-particle waste in the first step is 100-.
The invention is further provided with: and in the second step, setting the air blowing time of the air blowing device into the dirty oil to be 20-30s, setting the air blowing amount of the air blowing device into the dirty oil to be 0.5mm for carrying out the downward cultivation, and setting the air blowing pressure to be 0.15-0.3 MPa.
Through adopting above-mentioned technical scheme, gas blowing device blows to sump oil inside, can make when stewing sink in the sweeps motion of bottom, suspend in sump oil evenly enough to realize even, filter effectively.
The invention is further provided with: the fourth step is that the pressurizing device pressurizes the pressurizing cavity to 1.5-2.5Mpa for 1-2 min.
The invention is further provided with: and after the steps I to III are circulated for multiple times, performing pressure filtration on the grinding ash on the filter screen subjected to multiple times of normal pressure filtration through the step IV, and finally separating the grinding ash block from the filter screen through the step V.
Through adopting above-mentioned technical scheme, carry out unified high pressure filtration to a large amount of sweeps that pile up in the filter screen again after circulating the filtration many times with step one to step three, so, have the effect of energy saving and cost.
The other technical purpose of the invention is realized by the following technical scheme: the equipment for the cooling oil cleaning process comprises a dirty oil pool, a machine shell and a filtering and cleaning device arranged in the machine shell, wherein the dirty oil pool is provided with an air blowing device;
the filtering and cleaning device comprises a transmission mechanism, the transmission mechanism comprises a plurality of transmission rollers and a filter screen sleeved on the transmission rollers, and the transmission rollers rotate through a driving mechanism;
a sealing cover is arranged in the casing and is arranged above the filter screen, a hydraulic cylinder is arranged on the casing and drives the sealing cover to move up and down along the vertical direction relative to the filter screen;
a pressurizing device is arranged in the sealing cover, an oil pump is arranged in the dirty oil pool, and the oil pump pumps dirty oil to the filter screen through an oil pipeline;
an oil collecting pool is arranged in the casing and correspondingly arranged below the filter screen.
By adopting the technical scheme, after sump oil collected in a sump oil tank is stood for a proper time, fine waste scraps are combined with each other to form large-particle waste scraps, an air blowing device blows air into the sump oil to enable large-particle waste scraps at the bottom to roll and suspend to form turbid liquid, the turbid liquid is pumped onto a filter screen through an oil pump, soft grinding dust is formed on the filter screen by filtration, clean oil is filtered out and flows into an oil collecting tank, a hydraulic cylinder drives a sealing cover to cover the filter screen to enable the inside of the sealing chamber to form a sealing chamber, then the sealing chamber is pressurized through a pressurizing device to enable the grinding dust on the filter screen to be compacted by high pressure to form a grinding dust block, then the hydraulic cylinder drives the sealing cover to be lifted and reset again, a driving mechanism drives a driving roller to rotate to enable the filter screen to move towards a discharging end, the grinding dust block on the upper surface of the filter screen can be separated from the filter screen under the self gravity when moving, the oil cleaner also has the effects of low energy consumption and cost, and the cleanliness of the clean oil is high.
The invention is further provided with: the driving mechanism comprises a driving motor, an output shaft of the driving motor is provided with a driving wheel, a driven wheel is coaxially and fixedly arranged on the transmission roller, and the driving wheel is in transmission fit with the driven wheel through a belt.
Through adopting above-mentioned technical scheme, driving motor starts the back, drives the action wheel and rotates, and the action wheel passes through the belt and drives from the driving wheel rotation, can drive the filter screen through the driving roller and move forward.
The invention is further provided with: be equipped with the support frame in the casing, the support frame is located between the filter screen, and when the sealed cowling pushed down on the filter screen, the support frame offseted the cooperation with the sealed cowling.
Through adopting above-mentioned technical scheme, when the sealed cowling covered on the filter screen, the lower surface and the support frame of filter screen contacted for support frame and sealed cowling interact are fixed with the filter screen clamp.
The invention is further provided with: the machine shell is internally provided with a gas blowing pipeline, the gas blowing pipeline is connected with a second air pump, the side wall of the gas blowing pipeline is provided with a plurality of gas blowing holes, the gas blowing holes correspond to the discharging ends of the filter screen, a slag collecting groove is arranged below the discharging ends of the filter screen, the inner wall of the machine shell is provided with a guide plate located at the discharging ends of the filter screen, and the guide plate is located above the slag collecting groove.
By adopting the technical scheme, the second air pump blows air into the air blowing pipeline after being started, the air flow is blown out through the air blowing holes and correspondingly blown onto the filter screen at the discharge end, the grinding block on the filter screen can more easily and quickly fall off from the filter screen, and the adhesion of the grinding block on the filter screen is effectively reduced; the guide plate can guide the falling ash grinding blocks into the slag collecting groove.
In conclusion, the invention has the following beneficial effects:
1. the mode of combining normal pressure filtration and high pressure filtration is adopted, the grinding block is formed on the filter screen, and the grinding block can automatically fall off by the rotation of the filter screen, so that the collection is convenient, and thus, a large amount of dirty oil can be cleaned by one-time filtration, so that the cleaning efficiency is higher, and the recovery rate of clean oil is higher; in addition, compared with the prior art, the impurity content in the clean oil can be reduced from 6.5 per thousand to 0.8 per thousand to 1 per thousand, the recovery quality of the clean oil is greatly improved, and the effect of higher cleanliness is achieved;
2. after the first step, the second step and the third step are adopted for multiple times of circulating filtration, a large amount of scraps accumulated on the filter screen are uniformly filtered at high pressure, so that the effects of saving energy and cost are achieved;
3. the mode that the air blowing pipeline is arranged at the discharging end of the filter screen is adopted, so that the grinding blocks on the filter screen can more easily and quickly fall off from the filter screen, and the adhesion of the grinding on the filter screen is effectively reduced; the guide plate can guide the falling ash grinding blocks into the slag collecting groove.
Drawings
Fig. 1 is a schematic diagram of the overall structural relationship of the embodiment.
Fig. 2 is a top view of the embodiment.
Fig. 3 is a schematic diagram of the internal structural relationship of the embodiment.
Fig. 4 is a schematic view showing an internal structural relationship of the seal housing of the embodiment, in a sectional view.
Fig. 5 is a schematic flow structure diagram of the embodiment.
In the figure: 1. a dirty oil pool; 11. a mounting frame; 12. a first air pump; 13. a gas blowing line; 14. an oil pump; 141. an oil pipeline; 2. a housing; 21. a drive motor; 211. a driving wheel; 212. a belt; 22. a hydraulic cylinder; 23. a third air pump; 24. a gas delivery pipe; 25. an oil collecting pool; 26. a slag collecting groove; 27. a guide plate; 28. a support frame; 29. a barometer; 3. a driving roller; 31. a transmission belt; 32. a driven wheel; 4. filtering with a screen; 5. a sealing cover; 51. a horizontal shower pipe; 511. an oil outlet hole; 6. an air blowing pipeline; 61. a second air pump; 62. and (4) air blowing holes.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The first embodiment is as follows:
a cooling oil cleaning process and a treatment device thereof are disclosed, as shown in FIGS. 1-4, the structural relationship schematic diagram of the treatment device comprises a dirty oil pool 1, a machine shell 2 and a filtering cleaning device arranged in the machine shell 2, wherein the dirty oil pool 1 is provided with a mounting frame 11, the mounting frame 11 is provided with a blowing device, the blowing device comprises a first air pump 12, the first air pump 12 is connected with a blowing pipeline 13, and the other end of the blowing pipeline 13 extends into the dirty oil pool 1.
As shown in fig. 1-5, the filtering and cleaning device includes a transmission mechanism, the transmission mechanism includes four transmission rollers 3 connected to the casing 2 through bearing rotation and a filter screen 4 sleeved on the four transmission rollers 3, the mesh number of the filter screen 4 is set to 180 meshes, the transmission rollers 3 are in transmission fit with each other through a transmission belt 31, the end of one of the transmission rollers 3 is coaxially provided with a driving wheel 211, the casing 2 is externally and fixedly provided with a driving motor 21, an output shaft of the driving motor 21 is provided with the driving wheel 211, the driving wheel 211 is in transmission fit with a driven wheel 32 through a belt 212, the driving wheel 211 is driven to rotate by the driving wheel 211 after the driving motor 21 is started, the driving wheel 211 drives the driven wheel 32 to rotate through the belt 212, namely, the transmission rollers 3. Still be equipped with sealed cowling 5 in the casing 2, the lower terminal surface of sealed cowling 5 is the opening form, and the top of filter screen 4 is located to sealed cowling 5, and 2 top fixed mounting of casing have pneumatic cylinder 22, pneumatic cylinder 22's piston rod lower extreme and 5 top fixed connection of sealed cowling, and pneumatic cylinder 22 drive 5 relative filter screens 4 of sealed cowling follow vertical direction up-and-down motion. The inside of the sealing cover 5 is provided with a pressurizing device, the pressurizing device comprises a third air pump 23 and an air pipe 24 connected to the third air pump 23, the air pipe 24 is in sealing fit with the sealing cover 5, one end, far away from the third air pump 23, of the air pipe 24 always extends into the sealing cover 5, the inside of the sealing cover 5 is provided with an air pressure detection device, the casing 2 is provided with an air pressure gauge 29, and the air pressure gauge 29 is connected with the air pressure detection device. An oil pump 14 is arranged in the dirty oil pool 1, the oil pump 14 pumps dirty oil to the filter screen 4 through an oil pipeline 141, a horizontal spraying pipe 51 is arranged at an outlet of the oil pipeline 141, the horizontal spraying pipe 51 is arranged in the sealing cover 5 along the width direction of the filter screen 4, the horizontal spraying pipe 51 is arranged above the filter screen 4, and a plurality of oil outlet holes 511 are formed in the horizontal spraying pipe 51 at equal intervals.
As shown in fig. 1-4, an oil collecting tank 25 is further disposed in the casing 2, the oil collecting tank 25 is correspondingly disposed below the filter screen 4, a slag collecting groove 26 is disposed below the discharging end of the filter screen 4, the oil collecting tank 25 and the slag collecting groove 26 are adjacently disposed, a guide plate 27 located at the discharging end of the filter screen 4 is disposed on the inner wall of the casing 2, and the guide plate 27 is located above the slag collecting groove 26. Be equipped with support frame 28 in the casing 2, support frame 28 locates the lower surface below of upside filter screen 4, and when the sealed cowling 5 pushed down on filter screen 4, support frame 28 and sealed cowling 5 offseted the cooperation. The casing 2 is internally provided with an air blowing pipeline 6, the air blowing pipeline 6 is connected with a second air pump 61, the side wall of the air blowing pipeline 6 is provided with a plurality of air blowing holes 62, and the air blowing holes 62 are correspondingly arranged at the blanking end of the filter screen 4.
The cooling oil cleaning process comprises the following steps:
step one, standing: standing the dirty oil mixed with the scraps in a dirty oil pool 1 for 3 hours, wherein the small amount of scraps with magnetism are combined with each other under the adsorption action of metal bonds to form large-particle scraps, and the particle size of the large-particle scraps is 100-150 mu m;
step two, mixing solid and liquid: carrying out thin film evaporation and vacuum evaporation on the waste oil mixed with the waste chips, and carrying out thin film evaporation and vacuum evaporation on the waste oil mixed with the waste chips, wherein the blowing amount is set to be 0.5mm and the blowing pressure is set to be 0.2 Mpa, so that the waste chips in the cooling oil are uniformly suspended in the waste oil to form a suspension;
step three, normal pressure filtration: pumping the turbid liquid into a filtering and cleaning device, filtering the turbid liquid through a filter screen 4 to form clean oil and grinding dust, wherein the clean oil flows into an oil collecting tank 25 under the self gravity, and the grinding dust is paved on the upper surface of the filter screen 4;
step four, high-pressure filtration: covering a sealing cover 5 on the filter screen 4, forming a pressurizing cavity between the sealing cover 5 and the filter screen 4, pressurizing the inside of the pressurizing cavity to 2.0Mpa by a pressurizing device for 2min, so that the soft grinding dust is compacted into a grinding dust block, simultaneously, cooling oil attached to the grinding dust is separated from the grinding dust block under high pressure, and the clean cooling oil flows into an oil collecting pool 25 to dry the grinding dust block;
step five, separating the grinding ash block: the sealing cover 5 is lifted and reset, the filter screen 4 rotates towards the discharging end, and the grinding block on the filter screen 4 is separated from the filter screen 4 under the self gravity.
In addition, the steps from the first step to the third step can be repeated, the grinding ash on the filter screen 4 after being subjected to the frequent filter pressing for many times is subjected to pressure filtration through the step four, and finally, the grinding ash block is separated from the filter screen 4 through the step five. After the multiple normal pressure filtration, the unified high pressure filtration is carried out on a large amount of scraps accumulated on the filter screen 4, so that the energy and cost saving effect is achieved.
The basic working principle of the invention is as follows: after the sump oil collected in the sump oil tank 1 is stood for a proper time, the fine scraps are combined with each other to form the scraps of larger particles, and the longer the time for the scraps to stand in the sump oil tank 1 is, the larger the diameter of the combined particles is, so that the quick filtration is convenient. When dirty oil is pumped to the filter screen 4, the gas blowing device blows to dirty oil, makes the big granule sweeps of bottom roll and suspend and form the turbid liquid, and the mill ash is suspended in dirty oil evenly enough. The suspension liquid is pumped to the filter screen 4 through the oil pump 14, the filter screen 4 is filtered at normal pressure to form soft grinding dust, meanwhile, clean oil is filtered out and flows into the oil collecting tank 25, the hydraulic cylinder 22 drives the seal cover 5 to press down on the filter screen 4 to form a seal cavity inside the filter screen 4, the lower surface of the filter screen 4 is contacted with the support frame 28, the support frame 28 and the seal cover 5 are interacted to clamp and fix the filter screen 4, then the seal cavity is pressurized through the pressurizing device, the grinding dust on the filter screen 4 is compacted under high pressure to form compact grinding dust blocks, then the hydraulic cylinder 22 drives the seal cover 5 to lift up and reset, the driving mechanism drives the driving roller 3 to rotate to drive the filter screen 4 to move towards the lower material end, the grinding dust blocks on the upper surface of the filter screen 4 can be separated from the filter screen 4 under the self gravity when moving to the front arc end of the filter screen 4, meanwhile, the second air pump 61 is started to blow, the air current blows off through gas hole 62 to on blowing the filter screen 4 of discharge end correspondingly, the mill ash piece on the filter screen 4 drops fast from the filter screen 4 more easily, effectively reduces the adhesion of mill ash on the filter screen 4, is convenient for collect, and deflector 27 can be with leading-in to the collection cinder notch 26 of mill ash piece that drops. When the filter screen 4 moves to the discharge end, the subsequent dirty oil is discharged from the oil outlet holes 511 of the horizontal spray pipe 51, and along with the gradual movement of the filter screen 4 to the discharge end, the dirty oil can be uniformly distributed on the filter screen 4 until the original filter screen 4 below is transferred to the upper side.
After the dirty oil containing a large amount of scraps is filtered under normal pressure and high pressure, clean oil is collected in the oil collecting tank 25 and is conveyed to a workshop through a pump for recycling in the processing process, and the ash grinding block on the filter screen 4 rotates along with the filter screen 4 and is separated from the filter screen 4 under the self gravity, so that a large amount of dirty oil can be cleaned by one-time filtering, and the dirty oil cleaning device has high cleaning efficiency and high clean oil recovery rate; compared with the soft grinding ash, the grinding ash block compressed by high pressure is easier to fall off from the filter screen 4 and is easier to collect, and in addition, compared with the prior art, the impurity content in the clean oil can be reduced from 6.5 per mill originally to 0.8 per mill to 1 per mill, so that the recovery quality of the clean oil is greatly improved, the effect of higher cleanliness is achieved, and the effects of energy consumption and lower cost are also achieved.
Example two:
a cooling oil cleaning process is different from an embodiment I in the process step I, in the standing process, a proper amount of magnetic powder is added into dirty oil in a dirty oil pool in the step I, the mass of the magnetic powder added into every 1000kg of dirty oil is 1kg, the magnetic powder can adsorb metal waste chips such as grinding wheel ash and scrap iron, and the metal waste chips are made into larger particles, in addition, a proper amount of activated carbon powder can be added into the dirty oil pool and stirred, the activated carbon powder can be used as a tuberculosis agent, the activated carbon powder with the particle size of 50-120 mu m is added into the dirty oil, the mass of the activated carbon powder added into every 2000kg of dirty oil is about 1kg, and due to the fact that a large number of adsorption holes are formed in the activated carbon powder, the metal waste chips can be adsorbed on the adsorption holes of the activated carbon through the physical adsorption effect. In addition, the temperature of the dirty oil in the dirty oil pool can be adjusted to 5-10 ℃ when the dirty oil is kept still, and the low temperature slows down the molecular motion speed when the dirty oil is kept still at a lower temperature, so that the combination time of the waste chip particles can be effectively shortened.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (10)
1. A cooling oil cleaning process is characterized in that: the method comprises the following steps:
step one, standing: standing the dirty oil mixed with the scraps in a dirty oil pool (1) to combine the fine scraps with each other to form large-particle scraps;
step two, mixing solid and liquid: blowing air into the dirty oil mixed with the scraps by an air blowing device to enable the scraps in the dirty oil to be uniformly suspended in the dirty oil to form suspension;
step three, normal pressure filtration: pumping the turbid liquid into a filtering and cleaning device, filtering the turbid liquid by a filter screen (4) to form clean oil and grinding ash, wherein the clean oil flows into an oil collecting pool (25) under the self gravity, and the grinding ash is paved on the upper surface of the filter screen (4);
step four, high-pressure filtration: covering a sealing cover (5) on a filter screen (4), forming a pressurizing chamber between the sealing cover (5) and the filter screen (4), pressurizing the pressurizing chamber through a pressurizing device, compacting soft grinding ash into grinding ash blocks, separating cooling oil attached to the grinding ash from the grinding ash under high pressure, and flowing clean cooling oil into an oil collecting pool (25) to dry the grinding ash blocks;
step five, separating the grinding ash block: the sealing cover (5) is reset, the filter screen (4) rotates, and the grinding ash blocks on the filter screen (4) are separated from the filter screen (4) under the self gravity.
2. A cooling oil cleaning process according to claim 1, characterized in that: and in the step one, the standing time of the dirty oil mixed with the waste chips in the dirty oil pool (1) is set to be 3-4 h.
3. A cooling oil cleaning process according to claim 1, characterized in that: in the first step, the particle size of the large-particle waste scraps is 100-150 μm, and in the third step, the mesh number of the filter screen (4) is set to be 160-180 meshes.
4. A cooling oil cleaning process according to claim 1, characterized in that: and in the second step, setting the air blowing time of the air blowing device into the dirty oil to be 20-30s, setting the air blowing amount of the air blowing device into the dirty oil to be 0.5mm for carrying out the heavy year, and setting the air blowing pressure to be 0.15-0.3 MPa.
5. A cooling oil cleaning process according to claim 1, characterized in that: in the fourth step, the pressurizing device pressurizes the pressurizing cavity to 1.5-2.5Mpa for 1-2 min.
6. A cooling oil cleaning process according to claim 1, characterized in that: and after the steps I to III are circulated for multiple times, performing pressure filtration on the grinding ash on the filter screen (4) subjected to multiple times of normal pressure filtration through the step four, and finally separating the grinding ash block from the filter screen (4) through the step five.
7. An apparatus for use in a cooling oil cleaning process according to any one of claims 1 to 6, characterized in that: the device comprises a dirty oil pool (1), a shell (2) and a filtering and cleaning device arranged in the shell (2), wherein the dirty oil pool (1) is provided with an air blowing device;
the filtering and cleaning device comprises a transmission mechanism, the transmission mechanism comprises a plurality of transmission rollers (3) and a filter screen (4) sleeved on the transmission rollers (3), and the transmission rollers (3) rotate through a driving mechanism;
a sealing cover (5) is further arranged in the casing (2), the sealing cover (5) is arranged above the filter screen (4), a hydraulic cylinder (22) is arranged on the casing (2), and the hydraulic cylinder (22) drives the sealing cover (5) to move up and down relative to the filter screen (4) along the vertical direction;
a pressurizing device is arranged in the sealing cover (5), an oil pump (14) is arranged in the dirty oil pool (1), and the oil pump (14) pumps dirty oil to the filter screen (4) through an oil pipeline (141);
an oil collecting pool (25) is arranged in the casing (2), and the oil collecting pool (25) is correspondingly arranged below the filter screen (4).
8. The apparatus of claim 7, wherein: the driving mechanism comprises a driving motor (21), an output shaft of the driving motor (21) is provided with a driving wheel (211), a driven wheel (32) is coaxially and fixedly arranged on the transmission roller (3), and the driving wheel (211) is in transmission fit with the driven wheel (32) through a belt (212).
9. The apparatus of claim 7, wherein: be equipped with support frame (28) in casing (2), support frame (28) are located between filter screen (4), work as sealed cowling (5) push down in when on filter screen (4), support frame (28) with sealed cowling (5) counterbalance cooperation.
10. The apparatus of claim 7, wherein: be equipped with gas blowing pipe way (6) in casing (2), gas blowing pipe way (6) are connected with second air pump (61), a plurality of gas holes (62) have been seted up to the lateral wall of gas blowing pipe way (6), gas holes (62) correspond and locate the unloading end of filter screen (4), the unloading end below of filter screen (4) is equipped with album cinder groove (26), casing (2) inner wall is equipped with and is located deflector (27) of the unloading end of filter screen (4), deflector (27) are located album cinder groove (26) top.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114573071A (en) * | 2022-03-15 | 2022-06-03 | 温州博宇机械有限公司 | Automatic solution system of circulation purification filtration liquid residue |
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| Publication number | Priority date | Publication date | Assignee | Title |
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