CN103691188A - Oil on-line double-stage vacuum purification system - Google Patents
Oil on-line double-stage vacuum purification system Download PDFInfo
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- CN103691188A CN103691188A CN201310666830.3A CN201310666830A CN103691188A CN 103691188 A CN103691188 A CN 103691188A CN 201310666830 A CN201310666830 A CN 201310666830A CN 103691188 A CN103691188 A CN 103691188A
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Abstract
The invention discloses an oil on-line double-stage vacuum purification system which comprises an oil heater, a vacuum separator, a filter, a foam sensor, an infrared probe, a condenser, a Roots pump and a vacuum pump, wherein the vacuum separator comprises a vacuum tank, an atomizer and a reaction rack; the filter comprises a primary filter, a secondary filter and a fine filter; an oil inlet pump, the primary filter, the oil heater, the vacuum tank, an oil outlet pump, the secondary filter and the fine filter are sequentially connected; the oil heater comprises a plurality of heating tubes which are arranged in parallel, and the plurality of heating tubes are connected with each other to form a snakelike-structure heating channel; the atomizer comprises an oil inlet pipe, a distributor and a sprayer; and the distributor comprises an upper cavity plate and a lower cavity plate. The foam sensor and infrared probes are utilized to detect the foam and oil, and high-heat vapor in the vacuum tank is condensed, dehydrated and dried, thereby greatly prolonging the service life of the vacuum pump.
Description
Technical field
The present invention relates to a kind of oil filter, relate in particular to the online two-stage vacuum cleaning system of a kind of fluid.
Background technology
Because the device systems such as existing firepower, waterpower, nuclear force, combustion gas, cogeneration, chemical industry, papermaking, metallurgy happen occasionally seepage, poorly sealed, fluid for a long time in phenomenons such as thermic load, open oil storages, airborne moisture, gas infiltrate in fluid, cause Water in oil, gas.
Therefore, often adopt oil filter to realize on-line filtration and purify, make that operating oil product is not yet deteriorated just obtains timely purified treatment, can deviate from fast and efficiently moisture, gas and impurity in oil.Make the oil product indices of operation meet national standard, guarantee that regulating system, the lubricating system of unit normally worked.
In prior art, the online two-stage vacuum cleaning system of fluid comprises oil-feed pump, fluid heater, vacuum separation unit, goes out oil pump, filter and vavuum pump.Vacuum separation unit comprises vacuum tank and is arranged on atomizer and the reaction frame in vacuum tank, the oil-out of oil-feed pump is connected with the oil-in of fluid heater, the oil-out of fluid heater is connected with the oil-in of atomizer in vacuum tank, the oil-out of vacuum tank is connected with the oil-in that goes out oil pump, go out the oil-out of oil pump and the oil-in of filter is connected, the bottom of vacuum tank arranges fuel outlet valve, on vacuum tank and near below reaction frame, return valve being set.Fluid heater is body structure, and resistance heater is set in body structure, and fluid heating is uneven, and heating effect is poor.Atomizer mainly contains a rectangular box, in the bottom of rectangular box, a plurality of shower nozzles is set, and a plurality of shower nozzles are communicated with in rectangular box by flexible pipe respectively, and shower nozzle adopts the gondola water faucet used of having a bath.The online two-stage vacuum cleaning system of the fluid poor filtration effect of this structure, atomizing effect is also poor, moisture in the fluid after atomization, higher containing gas rate; And the fluid in vacuum tank and foam can not accurately be controlled.Air in vacuum tank is extracted out by vavuum pump, because in vacuum tank, there was dampness in the air and excess Temperature, serious to the high temperature corrosion of vavuum pump, causes the lost of life of vavuum pump.
Summary of the invention
For above shortcomings in prior art, the invention provides a kind of homogeneous heating, can Precise Control of Oil liquid and foam, extend service life of vacuum pump, dehydration, degassing efficiency are higher, and the better online two-stage vacuum cleaning system of fluid of filter effect.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
The online two-stage vacuum cleaning system of fluid, comprise oil-feed pump, fluid heater, vacuum separation unit, go out oil pump and filter, described vacuum separation unit comprises vacuum tank and is arranged on atomizer and the reaction frame in vacuum tank, the oil-out of described vacuum tank is connected with the oil-in that goes out oil pump, the bottom of described vacuum tank arranges fuel outlet valve, on vacuum tank and near below reaction frame, return valve being set; Also comprise for solenoid, by-pass flow valve, foam sensor, for detection of the infrared probe I of upper oil level, infrared probe II, condenser I, condenser II, condenser III, lobe pump I and lobe pump II for detection of lower oil level; Described foam sensor is arranged on vacuum tank and between atomizer and reaction frame, described infrared probe I and infrared probe II are all arranged on vacuum tank and are positioned at the below of reaction frame, and the position of described infrared probe I is than the high 350～450mm in the position of infrared probe II;
Described filter comprises primary filter, secondary filter and fine filter; The filter core of described primary filter adopts single layer filter net, and the filter core of described secondary filter adopts three layer filtration net; The filter core of described fine filter adopts three layer filtration net, and the cross section of the screen pack of fine filter is the corrugated ring-type that crest and trough replace, and trough is arranged in the inner side of a crest of adjacent two crests;
Described fluid heater comprises one group of several heating tube that be arranged in parallel, in every heating tube, resistance heater is set, and several heating tubes are connected to form the heat tunnel of serpentine configuration each other, and heat tunnel has an inlet and a liquid outlet;
The oil-out of described oil-feed pump is connected with the oil-in of primary filter, the oil-out of described primary filter is connected with the oil-in of fluid heater, describedly go out the oil-out of oil pump and the oil-in of secondary filter is connected, the oil-out of described secondary filter is connected with the oil-in of fine filter;
Described atomizer comprises oil inlet pipe, distributor and shower nozzle; Described distributor comprises cavity plate and the cavity of resorption plate being horizontally set on the interior cross section of vacuum tank, described cavity plate and cavity of resorption plate are the spherical crown panel that Radius is 0.5～0.6m, the periphery of cavity plate is connected with the peripheral sealing of cavity of resorption plate, and between cavity plate and cavity of resorption plate, form a cavity, the middle part of described cavity plate and cavity of resorption plate is and raises up; One end of described oil inlet pipe is connected to the end face middle part of cavity plate, and the other end of oil inlet pipe passes vacuum tank and is connected with the liquid outlet of fluid heater, and oil inlet pipe communicates with in cavity; On described cavity of resorption plate, be laid with a plurality of screwed holes; In each screwed hole on described cavity of resorption plate, a shower nozzle is all set; Described shower nozzle comprises the little conical pipe in the large bottom in top board, feed tube and top; Described top board is arranged on the top of conical pipe and forms a housing with conical pipe, and feed tube is arranged on the middle part of top board, and feed tube is communicated with in housing; External screw thread be set on the cylindrical of feed tube and screw in the screwed hole on cavity of resorption plate, between cavity of resorption plate and top board, seal gasket being set; Uniform several through holes on described conical pipe, between described through hole, at a distance of 8～12mm, the aperture of each through hole is 0.5～0.7mm;
Described solenoid and the by-pass flow valve of supplying is arranged on oil inlet pipe, and forms parallel connection for solenoid and by-pass flow valve, and temperature sensor is also installed on described oil inlet pipe;
The air inlet of described condenser I and condenser II is communicated with the cavity between atomizer and reaction frame, the gas outlet of described condenser I and condenser II is connected with the air inlet of lobe pump I by carrier pipe, the gas outlet of described lobe pump I is connected with the air inlet of lobe pump II, the gas outlet of described lobe pump II is connected with the air inlet of condenser III, and the gas outlet of described condenser III is connected with vavuum pump; The bottom of described condenser I and condenser II is connected with return valve, and the bottom of described condenser III is connected with water receiver, and vacuum meter and vacuum pressure controller are installed on described carrier pipe.
Compared with prior art, tool of the present invention has the following advantages:
1, the present invention adopts the heat tunnel of serpentine configuration, when fluid flows through heat tunnel, heats more evenly, and heating effect is better.
2, on vacuum tank, be provided with foam sensor and infrared probe, can detect the foam in vacuum tank and fluid, and then can accurately control.
3, first fluid carry out vacuum vaporization again by primary filter, finally by secondary filter and fine filter, filters, and filter effect is better.
4, because cavity plate and cavity of resorption plate are the spherical crown panel that Radius is 0.5～0.6m, make the pressure in each shower nozzle of cavity of resorption plate below identical, and shower nozzle adopts conical pipe to open several through holes thereon, high-temperature oil liquid enters ejection in atomizer, at identical pressure, under identical oil temperature, by atomizer fluid, first form vaporific, form membranaceously, mist of oil note in the process falling, on reaction frame, expands its contact area in a vacuum again; Moisture contained in oil obtains fast vaporizing and is discharged by vacuum system under the condition on high heat, large surface, and vaporization effect improves greatly.
5, adopt the lobe pump of the large speed of exhaust and the vacuum unit of vavuum pump composition to vacuumize system, guarantee the steam evaporating in fluid and other gas to discharge fast; The high hot steam of the high temperature evaporating in vacuum tank and other gas are carried out to condensation dewaters, dry processing, strengthen the effective output of system, greatly extend the service life of vavuum pump; And guarantee that fluid is not secondary polluted, guarantee that system works under a utmost point low pressure state simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the online two-stage vacuum cleaning system of fluid;
Fig. 2 is the structural representation of fine filter screen pack cross section;
Fig. 3 is the structural representation of fluid heater;
Fig. 4 is the structural representation that shower nozzle and seal gasket coordinate.
In accompanying drawing: 1-oil-feed pump; 2-fluid heater; 3-go out oil pump; 4-vacuum tank; 5-vavuum pump; 6-foam sensor; 7-infrared probe I; 8-infrared probe II; 9-primary filter; 10-secondary filter; 11-essence is considered device; 12-screen pack; 14-oil inlet pipe; 15-reaction frame; 16-fuel outlet valve; 17-return valve; 18-for solenoid; 19-by-pass flow valve; 20-heating tube; 21-resistance heater; 27-temperature sensor; 28-shower nozzle; 29-cavity plate; 30-cavity of resorption plate; 31-cavity; 32-top board; 33-feed tube; 34-conical pipe; 35-seal gasket; 36-through hole; 37-condenser I; 38-condenser II; 39-condenser III; 40-lobe pump I; 41-lobe pump II; 42-carrier pipe; 43-water receiver; 44-vacuum meter; 45-vacuum pressure controller.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, the online two-stage vacuum cleaning system of fluid, comprise oil-feed pump 1, fluid heater 2, vacuum separation unit, go out oil pump 3, filter, for solenoid 18, by-pass flow valve 19, foam sensor 6, for detection of the infrared probe I 7 of upper oil level, infrared probe II 8, condenser I 37, condenser II 38, condenser III 39, lobe pump I 40 and lobe pump II 41 for detection of lower oil level.Vacuum separation unit comprises vacuum tank 4 and is arranged on atomizer in vacuum tank and reaction frame 15, and the bottom of vacuum tank 4 arranges fuel outlet valve 16, on vacuum tank 4 and near below reaction frame 15, return valve 17 being set.Foam sensor 6 is arranged on vacuum tank 4 and between atomizer and reaction frame 15, foam sensor 6 can be used for detecting vacuum tank 4 inner foams number so that open permeation valve or close permeation valve, to reach the foam in accurate control vacuum tank 4.Infrared probe I 7 and infrared probe II 8 are all arranged on vacuum tank 4 and are positioned at the below of reaction frame, and the position of infrared probe I 7 is than the high 350～450mm in the position of infrared probe II 8.Excessive when oil inlet quantity, when the oil level in vacuum tank 4 rises to the high oil level control point of infrared probe I 7 detections, for solenoid, automatically to close, equipment stops oil-feed; When low oil level control point that the interior oil level of vacuum tank 4 detects lower than infrared probe II 8, for solenoid, automatically open fuel feeding.When the interior oil level of vacuum tank 4 reaches the high oil level control point of infrared probe I 7 detections, oil drain pump automatically starts and carries out oil extraction; When the interior oil level of vacuum tank 4 reaches the low oil level control point of infrared probe II 8 detections, oil pump stops automatically, and equipment stops oil extraction.
Filter comprises primary filter 9, secondary filter 10 and fine filter 11.The filter core of primary filter 9 adopts single layer filter net, and the filter core of secondary filter 10 adopts three layer filtration net.The cross section of the screen pack 12 of fine filter 11 is the corrugated ring-type that crest and trough replace, and trough is arranged in the inner side of a crest of adjacent two crests, as shown in Figure 2, when fluid passes through the screen pack 12 of fine filter 11, fluid forms disturbance, at trough place and crest place, all can reach filtration, fluid is accurately filtered.
The structure of fluid heater as shown in Figure 3, fluid heater 2 comprises one group of several heating tube 20 that be arranged in parallel, the every interior resistance heater 21 that arranges of heating tube 20, several heating tubes 20 are connected to form the heat tunnel of serpentine configuration each other, and heat tunnel has an inlet and a liquid outlet.
The oil-out of oil-feed pump 1 is connected with the oil-in of primary filter 9, and the oil-out of primary filter 9 is connected with the oil-in of fluid heater 2, and the oil-out of vacuum tank 4 is connected with the oil-in that goes out oil pump 3; The oil-out that goes out oil pump 3 is connected with the oil-in of secondary filter 10, and the oil-out of secondary filter 10 is connected with the oil-in of fine filter 11.
Atomizer comprises oil inlet pipe 14, distributor and shower nozzle 28.Distributor comprises cavity plate 29 and the cavity of resorption plate 30 being horizontally set on the interior cross section of vacuum tank 4, cavity plate 29 and cavity of resorption plate 30 are the spherical crown panel that Radius is 0.5～0.6m, the periphery of cavity plate 29 is connected with the peripheral sealing of cavity of resorption plate 30, and between cavity plate 29 and cavity of resorption plate 30, form a cavity 31, the middle part of cavity plate 29 and cavity of resorption plate 30 is and raises up.One end of oil inlet pipe 14 is connected to the end face middle part of cavity plate 29, and the other end of oil inlet pipe 14 passes vacuum tank 4 and is connected with the liquid outlet of fluid heater 2, and oil inlet pipe 14 communicates with in cavity 31.On cavity of resorption plate 30, be laid with a plurality of screwed holes; One shower nozzle 28 is all set in each screwed hole on cavity of resorption plate 30.As shown in Figure 4, shower nozzle 28 comprises top board 32, the little conical pipe 34 in the large bottom of feed tube 33 and top to the structure of shower nozzle.Top board 32 is arranged on the top of conical pipe 34 and forms a housing with conical pipe 34, and feed tube 33 is arranged on the middle part of top board 32, and feed tube 33 is communicated with in housing; External screw thread be set on the cylindrical of feed tube 33 and screw in the screwed hole on cavity of resorption plate 30, between cavity of resorption plate 30 and top board 32, seal gasket 35 being set.Uniform several through holes 36 on conical pipe 34, between through hole 36, at a distance of 8～12mm, the aperture of each through hole 36 is 0.5～0.7mm.
For solenoid 18 and by-pass flow valve 19, be arranged on oil inlet pipe 14, and form parallel connection for solenoid 18 and by-pass flow valve 19, temperature sensor 27 is also installed on oil inlet pipe 14.Fluid output in fluid heater, by controlling for solenoid 18, once break down for solenoid 18, can be controlled by manual adjustments by-pass flow valve 19.Temperature sensor 27 is for detection of the temperature of the fluid flowing through in heater, if the oil liquid temperature detecting is too high, can reduce the electric current of resistance heater 21; If the oil liquid temperature detecting is too low, can increase the electric current of resistance heater 21.
The air inlet of condenser I 37 and condenser II 38 is communicated with the cavity between atomizer and reaction frame, the gas outlet of condenser I 37 and condenser II 38 is connected with the air inlet of lobe pump I 40 by carrier pipe 42, the gas outlet of lobe pump I 40 is connected with the air inlet of lobe pump II 41, the gas outlet of lobe pump II 41 is connected with the air inlet of condenser III 39, and the gas outlet of condenser III 39 is connected with vavuum pump 5; The bottom of condenser I 37 and condenser II 38 is connected with return valve 17, and the bottom of condenser III 39 is connected with water receiver 43, and vacuum meter 44 and vacuum pressure controller 45 are installed on carrier pipe 42.The high temperature that discharge on vacuum tank 4 tops, high hot water and steam, first through I 37 and condenser II 38 cool-down dehumidifications, after lobe pump I 40 and lobe pump II 41, enter again in condenser III 39, carry out again cooling; High temperature, high hot water and steam are liquefied after cooling through twice and are reduced into water and fall in water receiver 43 and be discharged from, and finally remaining dry gas is discharged by vavuum pump 5, thus protection vavuum pump 5.
While using the online two-stage vacuum cleaning system of this fluid, first fluid heat by primary filter again, pretreated high temperature oil enters distributor by oil inlet pipe 14, because cavity plate 29 and cavity of resorption plate 30 are the spherical crown panel that Radius is 0.5～0.6m, make the pressure in each shower nozzles 28 of cavity of resorption plate 30 belows identical, by atomizer fluid, first form vaporificly, then form membranaceous, mist of oil note in the process falling, on reaction frame 15, expands its contact area in a vacuum; Moisture contained in oil obtains fast vaporizing and is discharged by vacuum system under the condition on high heat, large surface, and vaporization effect improves greatly.Foam sensor 6, infrared probe I 7 and infrared probe II 8 can detect the foam in vacuum tank and fluid, and then can accurately control.Dehydration, degassed very competent, pumps into the fine particle impurity in filtering fluid in secondary filter and fine filter through going out oil pump 3 again through dehydration, fluid after degassed, and filter effect is better.Meanwhile, adopt the lobe pump of the large speed of exhaust and the vacuum unit of vavuum pump composition to vacuumize system, guarantee the steam evaporating in fluid and other gas to discharge fast; The high hot steam of the high temperature evaporating in vacuum tank and other gas are carried out to condensation dewaters, dry processing, strengthen the effective output of system, greatly extend the service life of vavuum pump; And guarantee that fluid is not secondary polluted, guarantee that system works under a utmost point low pressure state simultaneously.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (1)
1. the online two-stage vacuum cleaning system of fluid, comprise oil-feed pump (1), fluid heater (2), vacuum separation unit, go out oil pump (3), filter and vavuum pump (5), described vacuum separation unit comprises vacuum tank (4) and is arranged on atomizer in vacuum tank and reaction frame (15), and the oil-out of described vacuum tank (4) is connected with the oil-in that goes out oil pump (3); The bottom of described vacuum tank (4) arranges fuel outlet valve (16), and below upper at vacuum tank (4) and close reaction frame arranges return valve (17); It is characterized in that: also comprise for solenoid (18), by-pass flow valve (19), foam sensor (6), for detection of the infrared probe I (7) of upper oil level, infrared probe II (8), condenser I (37), condenser II (38), condenser III (39), lobe pump I (40) and lobe pump II (41) for detection of lower oil level; Described foam sensor (6) is arranged on vacuum tank (4) above and is positioned at atomizer and reacts between frame (15), described infrared probe I (7) and infrared probe II (8) are all arranged on vacuum tank (4) above and are positioned at the below of reaction frame, and the position of described infrared probe I (7) is than the high 350～450mm in position of infrared probe II (8);
Described filter comprises primary filter (9), secondary filter (10) and fine filter (11); The filter core of described primary filter (9) adopts single layer filter net, and the filter core of described secondary filter (10) adopts three layer filtration net; The filter core of described fine filter (11) adopts three layer filtration net, and the cross section of the screen pack (12) of fine filter (11) is the corrugated ring-type that crest and trough replace, and trough is arranged in the inner side of a crest of adjacent two crests;
Described fluid heater (2) comprises one group of several heating tube (20) that be arranged in parallel, resistance heater (21) is set in every heating tube (20), several heating tubes (20) are connected to form the heat tunnel of serpentine configuration each other, and heat tunnel has an inlet and a liquid outlet;
The oil-out of described oil-feed pump (1) is connected with the oil-in of primary filter (9), the oil-out of described primary filter (9) is connected with the oil-in of fluid heater (2), the described oil-out that goes out oil pump (3) is connected with the oil-in of secondary filter (10), and the oil-out of described secondary filter (10) is connected with the oil-in of fine filter (11);
Described atomizer comprises oil inlet pipe (14), distributor and shower nozzle (28); Described distributor comprises cavity plate (29) and the cavity of resorption plate (30) being horizontally set on the interior cross section of vacuum tank (4), described cavity plate (29) and cavity of resorption plate (30) are the spherical crown panel that Radius is 0.5～0.6m, the periphery of cavity plate (29) is connected with the peripheral sealing of cavity of resorption plate (30), and between cavity plate (29) and cavity of resorption plate (30), form a cavity (31), the middle part of described cavity plate (29) and cavity of resorption plate (30) is and raises up; One end of described oil inlet pipe (14) is connected to the end face middle part of cavity plate (29), and the other end of oil inlet pipe (14) passes vacuum tank (4) and is connected with fluid heater (2) liquid outlet, and oil inlet pipe (14) communicates with in cavity (31); On described cavity of resorption plate (30), be laid with a plurality of screwed holes; One shower nozzle (28) is all set in each screwed hole on described cavity of resorption plate (30); Described shower nozzle (28) comprises top board (32), the little conical pipe (34) in the large bottom of feed tube (33) and top; Described top board (32) is arranged on the top of conical pipe (34) and forms a housing with conical pipe (34), and feed tube (33) is arranged on the middle part of top board (32), and feed tube (33) is communicated with in housing; On the cylindrical of feed tube (33), external screw thread be set and screw in the screwed hole on cavity of resorption plate (30), between cavity of resorption plate (30) and top board (32), seal gasket (35) being set; The upper uniform several through holes (36) of described conical pipe (34), between described through hole (36), at a distance of 8～12mm, the aperture of each through hole (36) is 0.5～0.7mm;
Described solenoid (18) and the by-pass flow valve (19) of supplying is arranged on oil inlet pipe (14) above, and forms parallel connection for solenoid (18) and by-pass flow valve (19), and temperature sensor (27) is also installed on described oil inlet pipe (14);
The air inlet of described condenser I (37) and condenser II (38) is communicated with the cavity between atomizer and reaction frame, the gas outlet of described condenser I (37) and condenser II (38) is connected with the air inlet of lobe pump I (40) by carrier pipe (42), the gas outlet of described lobe pump I (40) is connected with the air inlet of lobe pump II (41), the gas outlet of described lobe pump II (41) is connected with the air inlet of condenser III (39), and the gas outlet of described condenser III (39) is connected with vavuum pump (5); The bottom of described condenser I (37) and condenser II (38) is connected with return valve (17), the bottom of described condenser III (39) is connected with water receiver (43), and vacuum meter (44) and vacuum pressure controller (45) are installed on described carrier pipe (42).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310666830.3A CN103691188A (en) | 2013-12-07 | 2013-12-07 | Oil on-line double-stage vacuum purification system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310666830.3A CN103691188A (en) | 2013-12-07 | 2013-12-07 | Oil on-line double-stage vacuum purification system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106479660A (en) * | 2016-12-25 | 2017-03-08 | 重庆海国科技有限公司 | Three-level fine vacuum oil filtering system |
| CN106594006A (en) * | 2016-12-30 | 2017-04-26 | 浙江海洋大学 | Hydraulic oil detecting and purifying system |
| CN106753745A (en) * | 2016-12-25 | 2017-05-31 | 重庆海国科技有限公司 | High viscosity lubricating oil special vacuum oil filtering system |
| CN106731178A (en) * | 2016-12-25 | 2017-05-31 | 重庆海国科技有限公司 | Efficient two-stage vacuum oil filtering system |
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2013
- 2013-12-07 CN CN201310666830.3A patent/CN103691188A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106479660A (en) * | 2016-12-25 | 2017-03-08 | 重庆海国科技有限公司 | Three-level fine vacuum oil filtering system |
| CN106753745A (en) * | 2016-12-25 | 2017-05-31 | 重庆海国科技有限公司 | High viscosity lubricating oil special vacuum oil filtering system |
| CN106731178A (en) * | 2016-12-25 | 2017-05-31 | 重庆海国科技有限公司 | Efficient two-stage vacuum oil filtering system |
| CN106731178B (en) * | 2016-12-25 | 2022-07-26 | 重庆海国科技有限公司 | High-efficiency two-stage vacuum oil filtering system |
| CN106753745B (en) * | 2016-12-25 | 2023-01-13 | 大庆安惟特科技有限公司 | Special vacuum oil filtering system for high-viscosity lubricating oil |
| CN106594006A (en) * | 2016-12-30 | 2017-04-26 | 浙江海洋大学 | Hydraulic oil detecting and purifying system |
| CN106594006B (en) * | 2016-12-30 | 2018-01-09 | 浙江海洋大学 | A kind of hydraulic oil detects cleaning system |
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Application publication date: 20140402 |