CN110005662B - Off-line hydraulic oil filtering equipment - Google Patents

Off-line hydraulic oil filtering equipment Download PDF

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Publication number
CN110005662B
CN110005662B CN201910393285.2A CN201910393285A CN110005662B CN 110005662 B CN110005662 B CN 110005662B CN 201910393285 A CN201910393285 A CN 201910393285A CN 110005662 B CN110005662 B CN 110005662B
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China
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oil
filtering
filter
pipe
tank
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CN110005662A (en
Inventor
李静
郎永发
李默
张晓菲
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No6409 Factory Of Pla
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No6409 Factory Of Pla
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04Special measures taken in connection with the properties of the fluid
    • F15B21/041Removal or measurement of solid or liquid contamination, e.g. filtering

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

The invention discloses an off-line hydraulic oil filtering device which comprises a mobile trolley, an electric cabinet and a filtering oil tank, wherein the electric cabinet and the filtering oil tank are fixedly arranged on the mobile trolley, the filtering oil tank is positioned on the back surface of the electric cabinet, a centrifugal filter and a fine oil filter are parallelly arranged at the top of the filtering oil tank, an oil outlet of the centrifugal filter is communicated with the filtering oil tank, and an oil suction motor pump and an oil return motor pump are arranged behind the filtering oil tank. The beneficial effects are that: the quick extraction, repeated circulating filtration and discharge of the oil can be realized, so that the filtration efficiency of the oil is greatly improved; the centrifugal filtration is used for repeated circulating filtration, so that the filter element can be prevented from being replaced, the filtration effect can be improved, and the use cost of hydraulic oil can be reduced; different motor pumps are adopted for oil inlet and oil return, so that the cleanliness of oil return liquid is guaranteed, and the filtered hydraulic oil can reach NAS 8 level or above.

Description

Off-line hydraulic oil filtering equipment
Technical Field
The invention relates to the field of military hydraulic oil filtration, in particular to an off-line hydraulic oil filtration device.
Background
The hydraulic oil on the equipment such as military tracked vehicles can produce fixed impurity in the system operation process, so that the filtering is required to be carried out regularly, thereby filtering out water and impurities in the hydraulic oil and ensuring the normal operation of all elements in a hydraulic oil way. The existing oil filtering equipment for armies filters through the filter element, but because the impurities in the oil are more and the pollution is serious, 2-3 filter elements are required to be replaced for each filtering, so that the operation is complex, the time is long, and the filtering cost is high.
Disclosure of Invention
The invention aims to solve the problems by providing the offline hydraulic oil filtering equipment so as to solve the technical problems of complicated filtering operation, long time consumption, high cost and the like of hydraulic oil in the prior art. Among the various technical schemes provided by the invention, the preferred technical scheme comprises the following steps: simple operation, short time, low use cost, high filtering precision and other technical effects, and are explained in detail below.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides an off-line hydraulic oil filtering device which comprises a mobile trolley, an electric cabinet and a filtering oil tank, wherein the electric cabinet and the filtering oil tank are fixedly arranged on the mobile trolley, the filtering oil tank is positioned on the back of the electric cabinet, a centrifugal filter and a fine oil filter are arranged at the top of the filtering oil tank in parallel, an oil outlet of the centrifugal filter is communicated with the filtering oil tank, an oil suction motor pump and an oil return motor pump are arranged at the rear of the filtering oil tank, an oil pipe I is connected between an oil inlet of the centrifugal filter and an oil outlet of the oil suction motor pump, and an oil pipe eight is connected between an oil inlet of the fine oil filter and the oil return motor pump;
one side of the oil suction motor pump is provided with a three-way ball valve, an oil pipe II is connected between an oil inlet of the oil suction motor pump and an oil outlet of the three-way ball valve, an oil inlet pipe is connected to the side face of the three-way ball valve, an oil outlet at the bottom of the three-way ball valve is connected with an oil pipe IV, an oil suction filter is arranged at the other end of the oil pipe IV, an oil outlet of the oil suction filter is connected with an oil outlet block through an oil pipe V, the oil outlet block is fixedly arranged on the mobile trolley, an oil outlet of the oil outlet block is connected with a magnetic filter through an oil pipe V, an oil outlet of the magnetic filter is connected with an oil inlet of the three-way ball valve through an oil pipe V, the oil suction filter is fixedly arranged on the filtering oil tank, and the other oil inlet of the oil suction filter is communicated with the filtering oil tank;
an oil inlet of the oil return motor pump is connected with an oil outlet of the oil outlet block through an oil pipe seven;
when oil is pumped, the oil suction motor pump is started, the three-way ball valve is communicated with the oil inlet pipe and the oil pipe IV, the oil pipe IV is sequentially communicated with the oil suction filter, the oil pipe IV, the oil outlet block, the oil pipe VI, the magnetic filter, the oil pipe III, the three-way ball valve, the oil pipe II, the oil suction motor pump, the oil pipe I and the centrifugal filter, and finally flows into the filtering oil tank, so that an oil pumping pipeline is formed;
during filtering, the three-way ball valve is reversed, the oil inlet pipe is cut off, the oil suction motor pump is started, oil in the filtering oil tank is sucked into the oil pipe five through the oil suction filter, and the oil passes through the oil outlet block, the oil pipe six, the magnetic filter, the oil pipe three, the three-way ball valve, the oil pipe two, the oil suction motor pump and the oil pipe one in sequence, and flows back to the filtering oil tank through the centrifugal filter, so that a circulating filtering pipeline is formed;
when the oil is returned, the oil suction motor pump is turned off, the oil return motor pump is started, so that the oil in the filtered oil tank is sucked into the oil pipe five through the oil suction filter and sequentially enters the fine oil filter through the oil outlet block, the oil pipe seven and the oil pipe eight, an oil return pipeline is formed, and hydraulic oil in the oil return pipeline is finally discharged through an oil outlet of the fine oil filter.
By adopting the off-line hydraulic oil filtering equipment, when oil is pumped, the oil tank of the equipment can be directly connected into the oil inlet pipe, the oil suction motor pump is started, oil in the oil tank of the equipment is directly pumped into the filtering oil tank through the oil pumping pipeline, when the hydraulic oil passes through the oil pumping pipeline, the hydraulic oil is preliminarily filtered through the oil suction filter, the magnetic filter and the centrifugal filter, after oil pumping is completed, the three-way ball valve is reversed, the oil inlet pipe is cut off, so that the oil in the filtering oil tank flows back to the filtering oil tank after being circularly filtered for a plurality of times through the filtering pipeline, and in the filtering pipeline, the oil is circulated each time through the oil suction filter, the magnetic filter and the centrifugal filter, and the oil is filtered through the centrifugal filter by the centrifugal principle, so that the blockage of impurities can be avoided, the filtering effect of the oil can be improved, after the filtering is completed, the oil suction motor pump is started, the oil in the filtering oil tank is pumped out through the oil return pipeline, and is fed into the fine filter, and finally the fine filtered oil is discharged through the fine filter.
Preferably, an operation panel is arranged on the electric cabinet.
Preferably, the oil suction motor pump is fixedly arranged on the mobile trolley, and the oil return motor pump is fixed on the side wall of the filtering oil tank through a bracket.
Preferably, the second oil pipe is provided with an overflow valve, and the overflow valve is close to one end of the centrifugal filter.
Preferably, a temperature detector and an air filter are mounted on the top of the filtering oil tank, a detection probe of the temperature detector stretches into the filtering oil tank, the lower end of the air filter is welded on a top plate of the filtering oil tank, and the air filter is communicated with the filtering oil tank.
Preferably, a heating rod extending into the filtering oil tank is arranged below the oil return motor pump.
Preferably, the centrifugal filter is a KK centrifugal separation type oil purifier.
Preferably, the fine oil filter uses a 10 μ filter cartridge.
Preferably, the oil outlet block is a two-position three-way reversing valve.
Preferably, a protective box body for protecting each oil path element and two motor pumps is arranged behind the filtering oil tank.
The beneficial effects are that: 1. the invention can realize rapid extraction, repeated circulating filtration and discharge of oil, thereby greatly improving the filtration efficiency of the oil;
2. the centrifugal filtration is used for repeated circulating filtration, so that the filter element can be prevented from being replaced, the filtration effect can be improved, and the use cost of hydraulic oil can be reduced;
3. different motor pumps are adopted for oil inlet and oil return, so that the cleanliness of oil return liquid is guaranteed, and the filtered hydraulic oil can reach NAS 8 level or above.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of the present invention;
FIG. 2 is a right side view of the present invention;
FIG. 3 is a rear view of the present invention;
FIG. 4 is a diagram of the mounting position of the protective housing of the present invention;
fig. 5 is a perspective view of the space of the present invention.
The reference numerals are explained as follows:
1. an electric control box; 101. an operation panel; 2. a moving trolley; 3. filtering the oil tank; 4. oil block discharging; 5. a heating rod; 6. an oil suction motor pump; 7. an oil return motor pump; 8. a fine oil filter; 9. centrifugally filtering; 10. an overflow valve; 11. a temperature detector; 12. a protective box body; 13. three-way ball valve; 14. a magnetic filter; 15. an oil suction filter; 16a, oil pipe I; 16b, oil pipe II; 16c, oil pipe III; 16d, an oil inlet pipe; 16e, oil pipe IV; 16f, oil pipe six; 16g, oil pipe five; 16h, an oil pipe seven; 16i, oil pipe eight; 17. an air cleaner.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
Referring to fig. 1-5, the invention provides an off-line hydraulic oil filtering device, which comprises a mobile trolley 2, an electric cabinet 1 and a filtering oil tank 3, wherein the electric cabinet 1 and the filtering oil tank 3 are fixedly arranged on the mobile trolley 2, the mobile trolley 2 is convenient for moving and transferring the oil filtering device, the filtering oil tank 3 is positioned on the back surface of the electric cabinet 1, a centrifugal filter 9 and a fine oil filter 8 are parallelly arranged at the top of the filtering oil tank 3, an oil outlet of the centrifugal filter 9 is communicated with the filtering oil tank 3, an oil suction motor pump 6 and an oil return motor pump 7 are arranged at the rear of the filtering oil tank 3, an oil pipe I16 a is connected between an oil inlet of the centrifugal filter 9 and an oil outlet of the oil suction motor pump 6, and an oil pipe II 16i is connected between an oil inlet of the fine oil filter 8 and the oil return motor pump 7;
a three-way ball valve 13 is arranged on one side of the oil suction motor pump 6, an oil pipe II 16b is connected between an oil inlet of the oil suction motor pump 6 and an oil outlet of the three-way ball valve 13, an oil inlet pipe 16d is connected to the side surface of the three-way ball valve 13, an oil outlet at the bottom of the three-way ball valve 13 is connected with an oil pipe IV 16e, an oil suction filter 15 is arranged at the other end of the oil pipe IV 16e, the oil suction filter 15 is used for primarily filtering impurities in hydraulic oil, an oil outlet of the oil suction filter 15 is connected with an oil outlet block 4 through an oil pipe IV 16g, the oil outlet block 4 is fixedly arranged on the mobile trolley 2, an oil outlet of the oil outlet block 4 is connected with a magnetic filter 14 through an oil pipe VI 16f, the oil outlet of the magnetic filter 14 is connected with an oil inlet of the three-way ball valve 13 through an oil pipe III 16c, the oil outlet of the oil suction filter 15 is fixedly arranged on the filtering oil tank 3, and the other oil inlet of the oil suction filter 15 is communicated with the filtering oil tank 3;
an oil inlet of the oil return motor pump 7 is connected with an oil outlet of the oil outlet block 4 through an oil pipe seven 16 h;
during oil pumping, the oil suction motor pump 6 is started, the three-way ball valve 13 is communicated with the oil inlet pipe 16d and the oil pipe four 16e, and the oil pipe four 16e is sequentially communicated with the oil suction filter 15, the oil pipe five 16g, the oil outlet block 4, the oil pipe six 16f, the magnetic filter 14, the oil pipe three 16c, the three-way ball valve 13, the oil pipe two 16b, the oil suction motor pump 6, the oil pipe one 16a and the centrifugal filter 9, and finally flows into the filter oil tank 3, so that an oil pumping pipeline is formed;
during filtration, the three-way ball valve 13 is reversed, the oil inlet pipe 16d is cut off, the oil suction motor pump 6 is started, oil in the filtration oil tank 3 is sucked into the oil pipe five 16g through the oil suction filter 15, sequentially passes through the oil outlet block 4, the oil pipe six 16f, the magnetic filter 14, the oil pipe three 16c, the three-way ball valve 13, the oil pipe two 16b, the oil suction motor pump 6 and the oil pipe one 16a, and flows back to the filtration oil tank 3 through the centrifugal filter 9, so that a circulating filtration pipeline is formed;
when returning oil, the oil suction motor pump 6 is turned off, the oil return motor pump 7 is started, so that the oil in the filtering oil tank 3 is sucked into the oil pipe five 16g through the oil suction filter 15 and sequentially enters the fine oil filter 8 through the oil outlet block 4, the oil pipe seven 16h and the oil pipe eight 16i, an oil return pipeline is formed, and the hydraulic oil in the oil return pipeline is finally discharged through the oil outlet of the fine oil filter 8.
Preferably, the electric cabinet 1 is provided with an operation panel 101, so that the oil filtering device is controlled to perform oil pumping, filtering or oil returning actions through the operation panel 101.
The oil suction motor pump 6 is fixedly installed on the travelling car 2, the oil return motor pump 7 is fixed on the side wall of the filtering oil tank 3 through a support, and the arrangement is convenient for fixing the oil suction motor pump 6 and the oil return motor pump 7, so that the running stability of equipment is guaranteed.
And an overflow valve 10 is arranged on the second oil pipe 16b, and the overflow valve 10 is close to one end of the centrifugal filter 9.
The top of filtering oil tank 3 is installed temperature detector 11 and air cleaner 17, the test probe of temperature detector 11 stretches into inside filtering oil tank 3, so set up, be convenient for detect the inside hydraulic oil temperature of filtering oil tank 3 through temperature detector 11, the lower extreme welding of air cleaner 17 is in on the roof of filtering oil tank 3, just air cleaner 17 with filtering oil tank 3 is linked together, so set up, be convenient for through air cleaner 17 realizes the inside and outside pressure balance of filtering oil tank 3, filters the air that gets into in the filtering oil tank 3 through air cleaner 17 simultaneously, so set up, when manual refueling, can take off the lid at air cleaner 17 top, then insert the lower part of air cleaner 17 with the filler neck to make hydraulic oil directly inject into in the filtering oil tank 3.
The oil return motor pump 7's below is provided with stretches into the inside stick of heating of filtering oil tank 3, so set up, be convenient for when the temperature is lower in winter, can heat the hydraulic oil in the filtering oil tank 3 through the stick of heating to reduce the viscosity of hydraulic oil, be convenient for guarantee the filter effect of hydraulic oil.
The centrifugal filter 9 is a KK centrifugal separation type oil purifier, so that impurities and moisture in hydraulic oil can be removed conveniently through centrifugal force, more than 90% of the impurities can be filtered through the centrifugal filter 9, the filtered impurities are concentrated on the outer wall of the centrifugal filter, the centrifugal filter is only required to be cleaned regularly, no consumable is needed, and therefore filtering cost can be greatly reduced.
The fine oil filter adopts a 10 mu filter element, so that the cleaning degree of oil is convenient to ensure to meet the requirement of a hydraulic system, and meanwhile, the filter element consumable is greatly saved.
The oil outlet block 4 is a two-position three-way reversing valve, so that the oil pipe five 16g is communicated with the oil pipe six 16f through the oil outlet block 4 during oil pumping and filtering, and the oil pipe five 16g is communicated with the oil pipe seven 16h through the oil outlet block 4 during oil returning.
The protection box body 12 for protecting each oil circuit element and two motor pumps is arranged behind the filtering oil tank 3, so that the internal oil circuit elements and the motor pumps can be protected, and meanwhile, the external neatness and the attractiveness of the oil filtering equipment can be ensured.
By adopting the structure, when pumping oil, the oil tank of the device can be directly connected into the oil inlet pipe 16d, the oil suction motor pump 6 is started, oil in the oil tank of the device is directly pumped into the filtering oil tank 3 through the oil suction pipeline, hydraulic oil is preliminarily filtered by the oil suction oil filter 15, the magnetic filter 14 and the centrifugal filter 9 when passing through the oil suction pipeline, after oil pumping is completed, the three-way ball valve 13 is reversed, the oil inlet pipe 16d is cut off, so that the oil in the filtering oil tank 3 is circulated and filtered for a plurality of times through the oil suction pipeline and then flows back to the filtering oil tank 3 again, in the filtering pipeline, the oil is circulated through the oil suction oil filter 15, the magnetic filter 14 and the centrifugal filter 9 each time, as the centrifugal filter 9 filters the hydraulic oil through the centrifugal principle, the oil can be prevented from being blocked, the filtering effect of the oil can be improved, after the oil suction motor pump 6 stops acting, the oil return motor pump 7 is started, the oil in the filtering oil tank 3 is pumped out through the oil return pipeline and is fed into the fine filter 8, and finally discharged through the fine filter 8.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An off-line hydraulic oil filtering device, which is characterized in that: the automatic oil-sucking device comprises a mobile trolley, an electric cabinet and a filtering oil tank, wherein the electric cabinet and the filtering oil tank are fixedly arranged on the mobile trolley, the filtering oil tank is positioned on the back surface of the electric cabinet, a centrifugal filter and a fine oil filter are parallelly arranged at the top of the filtering oil tank, an oil outlet of the centrifugal filter is communicated with the filtering oil tank, an oil suction motor pump and an oil return motor pump are arranged at the rear of the filtering oil tank, an oil pipe I is connected between an oil inlet of the centrifugal filter and an oil outlet of the oil suction motor pump, and an oil pipe eight is connected between an oil inlet of the fine oil filter and the oil return motor pump;
one side of the oil suction motor pump is provided with a three-way ball valve, an oil pipe II is connected between an oil inlet of the oil suction motor pump and an oil outlet of the three-way ball valve, an oil inlet pipe is connected to the side face of the three-way ball valve, an oil outlet at the bottom of the three-way ball valve is connected with an oil pipe IV, an oil suction filter is arranged at the other end of the oil pipe IV, an oil outlet of the oil suction filter is connected with an oil outlet block through an oil pipe V, the oil outlet block is fixedly arranged on the mobile trolley, an oil outlet of the oil outlet block is connected with a magnetic filter through an oil pipe V, an oil outlet of the magnetic filter is connected with an oil inlet of the three-way ball valve through an oil pipe V, the oil suction filter is fixedly arranged on the filtering oil tank, and the other oil inlet of the oil suction filter is communicated with the filtering oil tank;
an oil inlet of the oil return motor pump is connected with an oil outlet of the oil outlet block through an oil pipe seven;
when oil is pumped, the oil suction motor pump is started, the three-way ball valve is communicated with the oil inlet pipe and the oil pipe IV, the oil pipe IV is sequentially communicated with the oil suction filter, the oil pipe IV, the oil outlet block, the oil pipe VI, the magnetic filter, the oil pipe III, the three-way ball valve, the oil pipe II, the oil suction motor pump, the oil pipe I and the centrifugal filter, and finally flows into the filtering oil tank, so that an oil pumping pipeline is formed;
during filtering, the three-way ball valve is reversed, the oil inlet pipe is cut off, the oil suction motor pump is started, oil in the filtering oil tank is sucked into the oil pipe five through the oil suction filter, and the oil passes through the oil outlet block, the oil pipe six, the magnetic filter, the oil pipe three, the three-way ball valve, the oil pipe two, the oil suction motor pump and the oil pipe one in sequence, and flows back to the filtering oil tank through the centrifugal filter, so that a circulating filtering pipeline is formed;
when the oil is returned, the oil suction motor pump is turned off, the oil return motor pump is started, so that the oil in the filtered oil tank is sucked into the oil pipe five through the oil suction filter and sequentially enters the fine oil filter through the oil outlet block, the oil pipe seven and the oil pipe eight, an oil return pipeline is formed, and hydraulic oil in the oil return pipeline is finally discharged through an oil outlet of the fine oil filter.
2. The offline hydraulic oil filtering device according to claim 1, characterized in that: an operation panel is arranged on the electric cabinet.
3. The offline hydraulic oil filtering device according to claim 2, characterized in that: the oil suction motor pump is fixedly arranged on the movable trolley, and the oil return motor pump is fixed on the side wall of the filtering oil tank through a bracket.
4. An off-line hydraulic oil filter apparatus according to claim 3, wherein: and an overflow valve is arranged on the second oil pipe and is close to one end of the centrifugal filter.
5. The offline hydraulic oil filtering device according to claim 4, wherein: the top of filtering the oil tank is installed temperature detector and air cleaner, temperature detector's detection probe stretches into inside the filtering the oil tank, air cleaner's lower extreme welding is in on the roof of filtering the oil tank, just air cleaner with it is linked together to filter the oil tank.
6. The off-line hydraulic oil filter apparatus of claim 5, wherein: and a heating rod extending into the filtering oil tank is arranged below the oil return motor pump.
7. The offline hydraulic oil filtering device according to claim 1, characterized in that: the centrifugal filter is a KK centrifugal separation type oil purifier.
8. The offline hydraulic oil filtering device according to claim 1, characterized in that: the fine oil filter adopts a 10 mu filter element.
9. The offline hydraulic oil filtering device according to claim 1, characterized in that: the oil outlet block is a two-position three-way reversing valve.
10. The offline hydraulic oil filtering device according to claim 1, characterized in that: and a protective box body for protecting each oil circuit element and two motor pumps is arranged behind the filter oil tank.
CN201910393285.2A 2019-05-13 2019-05-13 Off-line hydraulic oil filtering equipment Active CN110005662B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910393285.2A CN110005662B (en) 2019-05-13 2019-05-13 Off-line hydraulic oil filtering equipment

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Application Number Priority Date Filing Date Title
CN201910393285.2A CN110005662B (en) 2019-05-13 2019-05-13 Off-line hydraulic oil filtering equipment

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Publication Number Publication Date
CN110005662A CN110005662A (en) 2019-07-12
CN110005662B true CN110005662B (en) 2024-04-02

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201246367Y (en) * 2008-06-20 2009-05-27 河南科技学院 Movable hydraulic oil multilevel circulation filtering device
CN201486699U (en) * 2009-04-11 2010-05-26 陈绍勇 Electric centrifugal air cleaner for recycling supercharging oxygen-enriching tail gas of combustion engine
CN103423243A (en) * 2013-01-31 2013-12-04 上海理工大学 Movable hydraulic pump station
CN107224774A (en) * 2016-03-25 2017-10-03 新乡市华航航空液压设备有限公司 A kind of multi-functional oil cleaning device
WO2018040460A1 (en) * 2016-08-31 2018-03-08 陈波 Electric serving ultra-high-pressure system and operation principle thereof
CN208221209U (en) * 2018-04-12 2018-12-11 四川博瑞中控科技有限公司 A kind of Mobile hydraulic station
CN209943254U (en) * 2019-05-13 2020-01-14 中国人民解放军第六四零九工厂 Off-line hydraulic oil filtering equipment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201246367Y (en) * 2008-06-20 2009-05-27 河南科技学院 Movable hydraulic oil multilevel circulation filtering device
CN201486699U (en) * 2009-04-11 2010-05-26 陈绍勇 Electric centrifugal air cleaner for recycling supercharging oxygen-enriching tail gas of combustion engine
CN103423243A (en) * 2013-01-31 2013-12-04 上海理工大学 Movable hydraulic pump station
CN107224774A (en) * 2016-03-25 2017-10-03 新乡市华航航空液压设备有限公司 A kind of multi-functional oil cleaning device
WO2018040460A1 (en) * 2016-08-31 2018-03-08 陈波 Electric serving ultra-high-pressure system and operation principle thereof
CN208221209U (en) * 2018-04-12 2018-12-11 四川博瑞中控科技有限公司 A kind of Mobile hydraulic station
CN209943254U (en) * 2019-05-13 2020-01-14 中国人民解放军第六四零九工厂 Off-line hydraulic oil filtering equipment

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