CN205427567U - Hydraulic oil purifies and on -line monitoring equipment - Google Patents
Hydraulic oil purifies and on -line monitoring equipment Download PDFInfo
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Abstract
The utility model discloses a hydraulic oil purifies and on -line monitoring equipment relates to engineering machine tool technical field to solve that present purifier is unable high -efficiently to purify hydraulic pressure oil, and unable on -line monitoring and show relevant control interface and purify after oil mass parameter's problem. Hydraulic oil purifies and on -line monitoring equipment, include: the equipment principal case, the equipment principal incasement is including power pump, purification subassembly, determine module, data processing control device, display device, power pump, purification subassembly, determine module loop through the pipeline intercommunication, be provided with the first sensor among the inlet line of power pump, be provided with the second sensor in the export pipeline of power pump, be provided with the third sensor in the export pipeline of purification subassembly, first sensor, second sensor, third sensor, determine module and display device are connected with the data processing control device through the data line respectively. The utility model discloses mainly be applied to in industrial oil's the purification and on -line monitoring.
Description
Technical field
This utility model relates to technical field of engineering machinery, especially relates to a kind of hydraulic oil purifying and on-line monitoring equipment.
Background technology
Hydraulic press is widely used in the every field of machinery manufacturing industry, and wherein hydraulic system is the heart of hydraulic press, and hydraulic oil is the blood of whole hydraulic system, and the quality of its quality directly influences Hydraulic Elements and the performance of system and life-span.In real work, due to Hydraulic Elements and fluid induction system fair wear and tear, shut down the reason such as intrusion of corrosion and introduced contaminants, the hydraulic oil run in hydraulic system is often heavily polluted.According to statistics, the fault of hydraulic system 70% is above causing due to the pollution of hydraulic oil, and wherein solid particulate matter and moisture contamination are the key factors affecting hydraulic oil quality.Therefore, it is possible to efficiently scavenging solution force feed and after monitoring purifies in real time the device of hydraulic oil quality the most necessary.
Hydraulic oil purifying device of the prior art, generally includes: hydraulic oil tank, detection pump, granule detecting instrument, micro-moisture detector, purification assembly, data processing controller；Hydraulic oil tank is sequentially connected with detection pump, granule detecting instrument, micro-moisture detector by pipeline, micro-moisture detector connects hydraulic oil tank by pipeline, purification assembly is arranged on the pipeline between micro-moisture detector and hydraulic oil tank, and data processing controller is connected with detection pump, granule detecting instrument, micro-moisture detector, purification assembly respectively.
But, inventors herein have recognized that, hydraulic oil purifying device of the prior art, hydraulic oil first passes through granule detecting instrument and the detection of micro-moisture detector, again by the purification of purifier, oil product after purifying the most preferably is monitored and display device, it is impossible to ensure that the hydraulic oil after purifying has higher quality.
Therefore, how a kind of hydraulic oil purifying and on-line monitoring equipment are provided, can high-efficient purification hydraulic oil, simultaneously can real time on-line monitoring show and relevant control the oil quality parameter after interface and purification, it is ensured that the hydraulic oil of outputting high quality becomes those skilled in the art and needs badly and solve the technical problem that.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic oil purifying and on-line monitoring equipment, with solve existing hydraulic oil purifying device cannot high-efficient purification hydraulic oil, and cannot real time on-line monitoring show the relevant problem controlling the oil quality parameter after interface and purification.
This utility model provides a kind of hydraulic oil purifying and on-line monitoring equipment, including: equipment body case, include kinetic pump, purification assembly, detection components, data processing control device, display device in described equipment body case；Described kinetic pump, described purification assembly, described detection components pass sequentially through pipeline connection；The entrance pipe of described kinetic pump is provided with first sensor, the export pipeline of described kinetic pump is provided with the second sensor, the export pipeline of described purification assembly is provided with the 3rd sensor；Described first sensor, described second sensor, described 3rd sensor, described detection components and described display device are connected with described data processing control device by data wire respectively；Described purification assembly is for removing the moisture in hydraulic oil and particulate matter, and described detection components is used for detecting particle pollution degree and water saturation degree, described display device controlling interface and display and recording the result of detection for video data processing control apparatus.
Wherein, described purification assembly includes water trap and device for filtering impurities；The arrival end of described water trap passes through pipeline connection by pipeline connection, the port of export of described water trap with the arrival end of described device for filtering impurities with the port of export of described kinetic pump.
Further, described detection components includes grain testing apparatus and moisture content detection device；The arrival end of described grain testing apparatus passes through pipeline connection by pipeline connection, the port of export of described grain testing apparatus with the arrival end of described moisture content detection device with the port of export of described device for filtering impurities.
Further, the described first sensor arranged in the entrance pipe of described kinetic pump is the first pressure transducer；Described first pressure transducer is connected with described data processing control device by data wire；Being provided with described second sensor in pipeline between described kinetic pump and described water trap, described second sensor is the second pressure transducer；Described second pressure transducer is connected with described data processing control device by data wire；Described 3rd sensor arranged in the export pipeline of described device for filtering impurities is the 3rd pressure transducer；Described 3rd pressure transducer is connected with described data processing control device by data wire.
Wherein, the pipeline between described water trap and described device for filtering impurities is additionally provided with the 4th pressure transducer；Described 4th pressure transducer is connected with described data processing control device by data wire.
Specifically, described grain testing apparatus includes particle contamination sensor；Described particle contamination sensor is connected with described data processing control device by data wire.
Further, described moisture content detection device includes moisture transducer；Described moisture transducer is connected with described data processing control device by data wire.
Further, also including alarm device in described equipment body case, described alarm device is connected with described data processing control device by data wire.
Further, described equipment body case is oil filter main body case, and the bottom face of described oil filter main body case is provided with supporting leg.
Further, described equipment body case is shortening filter cart main body case, and the bottom face of described shortening filter cart main body case is provided with universal wheel.
Relative to prior art, a kind of hydraulic oil purifying described in the utility model and on-line monitoring equipment have the advantage that
In a kind of hydraulic oil purifying of this utility model offer and on-line monitoring equipment, including: equipment body case, include kinetic pump, purification assembly, detection components, data processing control device, display device in equipment body case；Kinetic pump, purification assembly, detection components pass sequentially through pipeline connection；The entrance pipe of kinetic pump is provided with first sensor, the export pipeline of kinetic pump is provided with the second sensor, the export pipeline of purification assembly is provided with the 3rd sensor；First sensor, the second sensor, the 3rd sensor, detection components and display device are connected with data processing control device by data wire respectively；Purification assembly is for removing the moisture in hydraulic oil and particulate matter, and detection components is used for detecting particle pollution degree and water saturation degree, display device controlling interface and display and recording the result of detection for video data processing control apparatus.Thus analyze and understand, in a kind of hydraulic oil purifying of this utility model offer and on-line monitoring equipment, setting due to purification assembly, it is capable of high-efficient purification hydraulic oil, due to detection components and the setting of display, can real-time online detection particulate matter and moisture contamination, the mass parameter of oil product after what display simultaneously was relevant control interface and purify such that it is able to the hydraulic oil of outputting high quality after ensureing to purify.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, the accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
A kind of hydraulic oil purifying that Fig. 1 provides for this utility model embodiment and the easy structure schematic diagram of on-line monitoring equipment.
Reference:
100-equipment body case；1-kinetic pump；
2-purification assembly；3-detection components；
4-data processing control device；5-display device；
61-first sensor；62-the second sensor；
63-the 3rd sensor；21-water trap；
22-device for filtering impurities；31-grain testing apparatus；
32-moisture content detection device；64-the 4th pressure transducer；
311-particle contamination sensor；321-moisture transducer；
7-alarm device.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be for only for ease of description this utility model and simplifying and describe; rather than instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood with concrete condition.
A kind of hydraulic oil purifying that Fig. 1 provides for this utility model embodiment and the easy structure schematic diagram of on-line monitoring equipment.
As it is shown in figure 1, this utility model embodiment provides a kind of hydraulic oil purifying and on-line monitoring equipment, including: equipment body case 100, include kinetic pump 1, purification assembly 2, detection components 3, data processing control device 4, display device 5 in equipment body case 100；Kinetic pump 1, purification assembly 2, detection components 3 pass sequentially through pipeline connection；The entrance pipe of kinetic pump 1 is provided with first sensor 61, the export pipeline of kinetic pump 1 is provided with the second sensor 62, the export pipeline of purification assembly 2 is provided with the 3rd sensor 63；First sensor the 61, second sensor the 62, the 3rd sensor 63, detection components 3 and display device 5 are connected with data processing control device 4 by data wire respectively；Purification assembly 2 is for removing the moisture in hydraulic oil and particulate matter, and detection components 3 is used for detecting particle pollution degree and water saturation degree, display device 5 controlling interface and display and recording the result of detection for video data processing control apparatus 4.
Relative to prior art, a kind of hydraulic oil purifying and on-line monitoring equipment described in this utility model embodiment have the advantage that
In a kind of hydraulic oil purifying of this utility model embodiment offer and on-line monitoring equipment, as shown in Figure 1, including: equipment body case 100, include kinetic pump 1, purification assembly 2, detection components 3, data processing control device 4, display device 5 in equipment body case 100；Kinetic pump 1, purification assembly 2, detection components 3 pass sequentially through pipeline connection；The entrance pipe of kinetic pump 1 is provided with first sensor 61, the export pipeline of kinetic pump 1 is provided with the second sensor 62, the export pipeline of purification assembly 3 is provided with the 3rd sensor 63；First sensor the 61, second sensor the 62, the 3rd sensor 63, detection components 3 and display device 5 are connected with data processing control device 4 by data wire respectively；Purification assembly 2 is for removing the moisture in hydraulic oil and particulate matter, and detection components 3 is used for detecting particle pollution degree and water saturation degree, display device 5 controlling interface and display and recording the result of detection for video data processing control apparatus 4.Thus analyze and understand, in a kind of hydraulic oil purifying of this utility model embodiment offer and on-line monitoring equipment, setting due to purification assembly 2, it is capable of high-efficient purification hydraulic oil, due to detection components 3 and the setting of display device 5, can real-time online detection particulate matter and moisture contamination, the mass parameter of oil product after what display simultaneously was relevant control interface and purify such that it is able to the hydraulic oil of outputting high quality after ensureing to purify.
Wherein, in order to realize hydraulic pressure water content in oil and particulate matter preferably removal effect, as it is shown in figure 1, purification assembly 2 includes water trap 21 and device for filtering impurities 22；The arrival end of water trap 21 passes through pipeline connection by pipeline connection, the port of export of water trap 21 with the arrival end of device for filtering impurities 22 with the port of export of kinetic pump 1.During use, hydraulic oil to be filtered passes through kinetic pump 1, enters water trap 21 and purifies, it is possible to gets rid of most of moisture and fraction impurity, carry out the fine straining of hydraulic oil subsequently into device for filtering impurities 22；By the setting of water trap 21, the water of free state in hydraulic oil can be removed, make the water saturation degree in fluid drop to less than 25%；By the setting of device for filtering impurities 22,4 micron particle of in hydraulic oil more than 99% can be removed, in the range of making cleannes reach NAS1638-4 level or ISO-440613/11/7.By arranging two-stage purification device (water trap 21 and device for filtering impurities 22), it is possible to realize hydraulic pressure water content in oil and particulate matter preferably removal effect.
It should be added that, NAS1638 grade is to measure the standard that hydraulic oil pollution degree is commonly used, by comparing the number of the contaminant particles of different-grain diameter, contrast standard table of grading, just can determine that the class of pollution of hydraulic oil herein.ISO-440613/11/7 represents the pollution level of hydraulic oil, and wherein 13/11/17 is pollution grade code, and first code represents that second code represents more than 6um particle grades more than 4um particle grades, and the 3rd code represents more than 14um particle grades.
Further, in order to the hydraulic oil after purification assembly 2 is detected, it is ensured that the oil quality after hydraulic oil purifying, as it is shown in figure 1, detection components 3 includes grain testing apparatus 31 and moisture content detection device 32；The arrival end of grain testing apparatus 31 passes through pipeline connection by pipeline connection, the port of export of grain testing apparatus 31 with the arrival end of moisture content detection device 32 with the port of export of device for filtering impurities 22.During use, hydraulic oil is after by kinetic pump 1 and purification assembly 2, then passes sequentially through grain testing apparatus 31 and moisture content detection device 32.After grain testing apparatus 31 detects data, display device 5 can show ISO-4406 grade and the NAS1638 grade of fluid the most in real time；After moisture content detection device 32 detects data, display device 5 can show the most in real time dissolves the variation tendency of moisture in water saturation degree content and fluid in fluid, thus guarantees the oil quality effectively detecting hydraulic oil after purification assembly 2.
Further, in order to realize the purpose of the pressure condition in real-time monitoring tubular road, so that complete equipment loine pressure too high or too low time, can take measures in time to avoid equipment impaired, as it is shown in figure 1, the first sensor 61 arranged in the entrance pipe of kinetic pump 1 is the first pressure transducer；First pressure transducer is connected with data processing control device 4 by data wire；Being provided with the second sensor 62 in pipeline between kinetic pump 1 and water trap 21, the second sensor 62 is the second pressure transducer；Second pressure transducer is connected with data processing control device 4 by data wire；The 3rd sensor 63 arranged in the export pipeline of device for filtering impurities 22 is the 3rd pressure transducer；3rd pressure transducer is connected with data processing control device 4 by data wire.First pressure transducer obtains the pressure of kinetic pump 1 entrance pipe, second pressure transducer obtains the pressure of pipeline between kinetic pump 1 and water trap 21,3rd pressure transducer obtains the pressure in device for filtering impurities 22 export pipeline, and the pressure signal of acquisition is sent to data processing control device 4 by each corresponding pressure transducer.Therefore, first, second, third pressure receptor can the most accurately experience the pressure in each respective line, so that complete equipment can take measures the most in time, it is to avoid equipment is because of hypertonia or too low and impaired.
Wherein, in order to realize monitoring in real time the purpose of the pressure condition between purification assembly 2, it is ensured that complete equipment properly functioning, as it is shown in figure 1, be additionally provided with the 4th pressure transducer 64 in the pipeline between water trap 21 and device for filtering impurities 22；4th pressure transducer 64 is connected with data processing control device 4 by data wire.The pressure condition obtained between water trap 21 and device for filtering impurities 22 in pipeline by the 4th pressure transducer 64, and corresponding pressure signal is sent to data processing control device 4, it is thus possible to realize monitoring in real time the purpose of the pressure condition between purification assembly 2, to ensure the properly functioning of complete equipment.
Further, in order to the particle content situation that detection hydraulic oil is after purification assembly 2 purifies, as it is shown in figure 1, grain testing apparatus 31 includes particle contamination sensor 311；Particle contamination sensor 311 is connected with data processing control device 4 by data wire.Hydraulic oil is after kinetic pump 1 and purification assembly 2 process, enter in grain testing apparatus 31, particle contamination sensor 311 can obtain the particle content of the hydraulic oil entered in grain testing apparatus 31, and corresponding cont signal is sent to data processing control device 4 such that it is able to ensure the particle content situation in the hydraulic oil after purifying is monitored in real time.
Further, in order to the moisture situation that detection hydraulic oil is after purification assembly 2 purifies, as it is shown in figure 1, moisture content detection device 32 includes moisture transducer 321；Moisture transducer 321 is connected with data processing control device 4 by data wire.After hydraulic oil sequentially passes through kinetic pump 1, purification assembly 2 and grain testing apparatus 31, finally by moisture content detection device 32, moisture transducer 321 therein can obtain the moisture of the hydraulic oil entered in moisture content detection device 32, and corresponding cont signal is sent to data processing control device 4 such that it is able to ensure the content situation of the moisture in the hydraulic oil after purifying is monitored in real time.
Wherein, in order to enable a technician to the ruuning situation of quality condition and the equipment knowing hydraulic oil in time, to make rapidly the measure of the running status correspondingly controlling complete equipment, as shown in Figure 1, also including alarm device 7 in equipment body case 100, alarm device 7 is connected with data processing control device 4 by data wire.At hydraulic oil purifying and the run duration of on-line monitoring equipment, when particle contamination sensor 311 experience contamination level of oil liquid exceed standard or moisture transducer 321 experience water content too high time, corresponding signal is sent to data processing control device 4 and after data processing control device 4 processes, alarm signal is sent to alarm device 7, so that alarm device 7 sends sound and light alarm；When pressure reduction when kinetic pump 1 suction pressure is too low, between the second sensor 62 and the 3rd sensor 63 is excessive, corresponding signal will be sent to information processing and control device 4, control the information after device 4 processes through information processing and will be sent to alarm device 7, alarm device 7 can send sound and light alarm, and device powers down is to stop the operation of kinetic pump 1 simultaneously.Therefore, different warning phenomenons can make technical staff know the quality condition of hydraulic oil and the ruuning situation of equipment in time, thus makes rapidly the measure of the running status correspondingly controlling complete equipment.
It should be added that herein, data processing control device 4 can also be by the information conveyance after processing to display device 5, thus display device 5 can show that control and operation interface, warning, recording equipment run time, the particle pollution degree of fluid, moisture content saturation and variation tendency in real time.
Further, in order to enable hydraulic oil purifying and on-line monitoring equipment stably to place, equipment body case 100 can be oil filter main body case, and the bottom face of oil filter main body case can be provided with supporting leg.
Further, for the ease of hydraulic oil purifying and the movement of on-line monitoring equipment, equipment body case 100 can also be shortening filter cart main body case, the bottom face of shortening filter cart main body case can be provided with universal wheel, thus when different location needs to use, it is only necessary to promote shortening filter cart main body case just can realize moving easily.
In addition it should be added that a kind of hydraulic oil purifying that this utility model embodiment provides and on-line monitoring equipment can arrange two kinds of operational modes: intermittent operation mode and non-batch operational mode；Can be used in industrial oil filtration and on-line checking under various applied environment, such as lubricating oil, hydraulic oil, transformer oil, quenching oil, gear oil, steam turbine oil, turbine oil etc..By the purification assembly 2 effective purification to iundustrial oil, it is possible to reduce the fault rate of the hydraulic test caused because oil quality is low, it is prevented effectively from the loss that delays work caused because of shutdown, reduces maintenance cost and maintenance time simultaneously, cut operating costs；Purify and i.e. achieve the use time relatively extending fluid, thus save the expense that oil plant is purchased, and then, high-quality fluid can effectively extend the service life of Hydraulic Elements, reduces the expense that Hydraulic Elements are changed.By detection components 3, data processing control device 4 and the cooperation of display device 5, particle contamination grade, water content and the equipment running status of fluid in hydraulic oil purifying and on-line monitoring equipment can be grasped in real time, it is simple to complete equipment is operated accordingly and controls.
Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, it is not intended to limit；Although this utility model being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or the most some or all of technical characteristic is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of this utility model each embodiment technical scheme.
Claims (10)
1. a hydraulic oil purifying and on-line monitoring equipment, it is characterised in that including: equipment body case, includes kinetic pump, purification assembly, detection components, data processing control device, display device in described equipment body case；
Described kinetic pump, described purification assembly, described detection components pass sequentially through pipeline connection；
The entrance pipe of described kinetic pump is provided with first sensor, the export pipeline of described kinetic pump is provided with the second sensor, the export pipeline of described purification assembly is provided with the 3rd sensor；
Described first sensor, described second sensor, described 3rd sensor, described detection components and described display device are connected with described data processing control device by data wire respectively；
Described purification assembly is for removing the moisture in hydraulic oil and particulate matter, and described detection components is used for detecting particle pollution degree and water saturation degree, described display device controlling interface and display and recording the result of detection for video data processing control apparatus.
A kind of hydraulic oil purifying the most according to claim 1 and on-line monitoring equipment, it is characterised in that described purification assembly includes water trap and device for filtering impurities；
The arrival end of described water trap passes through pipeline connection by pipeline connection, the port of export of described water trap with the arrival end of described device for filtering impurities with the port of export of described kinetic pump.
A kind of hydraulic oil purifying the most according to claim 2 and on-line monitoring equipment, it is characterised in that described detection components includes grain testing apparatus and moisture content detection device；
The arrival end of described grain testing apparatus passes through pipeline connection by pipeline connection, the port of export of described grain testing apparatus with the arrival end of described moisture content detection device with the port of export of described device for filtering impurities.
A kind of hydraulic oil purifying the most according to claim 2 and on-line monitoring equipment, it is characterised in that the described first sensor arranged in the entrance pipe of described kinetic pump is the first pressure transducer；Described first pressure transducer is connected with described data processing control device by data wire；
Being provided with described second sensor in pipeline between described kinetic pump and described water trap, described second sensor is the second pressure transducer；Described second pressure transducer is connected with described data processing control device by data wire；
Described 3rd sensor arranged in the export pipeline of described device for filtering impurities is the 3rd pressure transducer；Described 3rd pressure transducer is connected with described data processing control device by data wire.
A kind of hydraulic oil purifying the most according to claim 2 and on-line monitoring equipment, it is characterised in that in the pipeline between described water trap and described device for filtering impurities, be additionally provided with the 4th pressure transducer；Described 4th pressure transducer is connected with described data processing control device by data wire.
A kind of hydraulic oil purifying the most according to claim 3 and on-line monitoring equipment, it is characterised in that in described grain testing apparatus, include particle contamination sensor；Described particle contamination sensor is connected with described data processing control device by data wire.
A kind of hydraulic oil purifying the most according to claim 3 and on-line monitoring equipment, it is characterised in that in described moisture content detection device, include moisture transducer；Described moisture transducer is connected with described data processing control device by data wire.
A kind of hydraulic oil purifying the most according to claim 3 and on-line monitoring equipment, it is characterised in that also including alarm device in described equipment body case, described alarm device is connected with described data processing control device by data wire.
A kind of hydraulic oil purifying the most according to claim 1 and on-line monitoring equipment, it is characterised in that described equipment body case is oil filter main body case, and the bottom face of described oil filter main body case is provided with supporting leg.
A kind of hydraulic oil purifying the most according to claim 1 and on-line monitoring equipment, it is characterised in that described equipment body case is shortening filter cart main body case, and the bottom face of described shortening filter cart main body case is provided with universal wheel.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632140A (en) * | 2017-09-15 | 2018-01-26 | 沈春钦 | A kind of oil product service life intelligent detection device and application method |
| CN109372833A (en) * | 2018-12-20 | 2019-02-22 | 张正向 | A kind of hydraulic oil Intelligent purifying system of water conservancy gate hydraulic system |
| CN110624702A (en) * | 2019-09-28 | 2019-12-31 | 漯河展欣节能科技有限公司 | Intelligent centrifugal oil purifier |
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2016
- 2016-03-30 CN CN201620257349.8U patent/CN205427567U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632140A (en) * | 2017-09-15 | 2018-01-26 | 沈春钦 | A kind of oil product service life intelligent detection device and application method |
| CN109372833A (en) * | 2018-12-20 | 2019-02-22 | 张正向 | A kind of hydraulic oil Intelligent purifying system of water conservancy gate hydraulic system |
| CN109372833B (en) * | 2018-12-20 | 2020-06-12 | 张正向 | Hydraulic oil intelligent purification system of water conservancy gate hydraulic system |
| CN110624702A (en) * | 2019-09-28 | 2019-12-31 | 漯河展欣节能科技有限公司 | Intelligent centrifugal oil purifier |
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