CN106090590A - Safe efficient type paper machine lubricating circulatory system - Google Patents
Safe efficient type paper machine lubricating circulatory system Download PDFInfo
- Publication number
- CN106090590A CN106090590A CN201610603628.XA CN201610603628A CN106090590A CN 106090590 A CN106090590 A CN 106090590A CN 201610603628 A CN201610603628 A CN 201610603628A CN 106090590 A CN106090590 A CN 106090590A
- Authority
- CN
- China
- Prior art keywords
- grease
- box
- inlet tube
- paper machine
- filter bag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N19/00—Lubricant containers for use in lubricators or lubrication systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
- F16N29/04—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be given; enabling moving parts to be stopped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2210/00—Applications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2250/00—Measuring
- F16N2250/40—Flow
Abstract
The present invention relates to a kind of papermaking equipment circulating lubricating oil system, particularly relate to a kind of safe efficient type papermaking oil circulation system.System itself includes all being installed in parallel on grease-box, grease pump and lubricating oil pipeline, outlet and inlet tube at least two filter bag；Grease-box includes tank filler sleeve, manhole, fixing hole is also had in tank filler sleeve side, weld nipple on fixing hole, grease-box is internally provided with breathing bag, water suction felt it is provided with bottom grease-box, installing moisture detection probe in the middle part of water suction felt, the filter bag top of inlet tube and outlet installation is provided with electro connecting pressure gauge, and moisture detection probe and electro connecting pressure gauge are all electrically connected with the display alarm outside grease-box by wire.Use this system can extend more than Working Life of Lubricating Oil twice, the maintenance cycle of extension device lubricating system more than one times.
Description
Technical field
The invention belongs to equipment lubrication field, relate to a kind of papermaking equipment circulating lubricating oil system, particularly relate to a kind of peace
Overall height acting type papermaking oil circulation system.
Background technology
Papermaking equipment working environment very severe, high temperature, steam, dust, high humidity, load weight, equipment investment are greatly, domestic
A lot of one production line of paper making equipment are exactly more than 20 hundred million, the oil return that preparation filtration precision is 10um of the former blood circulation of paper machine
Filter and go out oil strainer, installs drain valve bottom grease-box, the oil filler of grease-box is also pneumostome, pneumostome
Design simply allows air have passed through a curved passage, so there is the problem that 1, the raising along with machining accuracy, respectively
The fit clearance of kind lubricating oil reversal valve, by original 5-10um, is transitioned into 2 about um, and therefore the filtering accuracy of 10um is
The operating needs of equipment cannot be met；2, the design of existing fuel tank pneumostome can not meet the demand of paper industry, steam, water
Divide, dust, air all can enter fuel tank, pollution lubricating oil and acceleration oil ageing；3, the machinery of tank bottoms it is deposited to
Impurity and moisture can float under the impact stirring action of oil return, and secondary enters lubricating system by oil pump；4, equipment operation
The metal fine-powder ground slowly sinks in fuel tank, and metal fine-powder is oil ageing accelerator, at this
During one be and by oil pump secondary suck lubricating system, easily cause card valve, make system operation malfunctioning, two be accelerate lubricating oil
Oxidation；5, on equipment, lubricating system only has the flow detection of access arrangement lubricating oil, not the lubricating oil from equipment exit
Flow detection, if there is oil leak, owing to equipment cannot detect the most greatly.
Summary of the invention
The present invention is directed to prior art not enough, it is provided that a kind of novel safe efficient type papermaking oil circulation system.For
Reach above-mentioned purpose, the technical scheme is that
A kind of safe efficient type paper machine lubricating circulatory system, including system itself, described system itself includes grease-box, profit
Oil pump and lubricating oil pipeline, described lubricating oil pipeline includes outlet and inlet tube, on described outlet and inlet tube the most also
At least two filter bag installed by connection；Described grease-box includes tank filler sleeve, manhole, also has fixing hole in tank filler sleeve side, Gu
Determining to weld on hole the short tube supporting with it, described grease-box is internally provided with breathing bag, uses clip after breathing bag collar extension flange
It is clamped on short tube outer wall, bottom grease-box, is provided with water suction felt, moisture detection probe is installed in the middle part of described water suction felt, enters
The filter bag top that mouth pipe and outlet are installed is provided with electro connecting pressure gauge, described moisture detection probe and electric contact pressure
Table is all electrically connected with the display alarm outside grease-box by wire.
As preferably, the filtering accuracy of the filter bag that described outlet and inlet tube are installed is 0.1-0.5 μm, described in enter
Filter bag on mouth pipe is Magnetic filtration device bag；The a diameter of 50-300mm of fixing hole having in tank filler sleeve side, described short tube is long
Degree is 50-200mm.
As preferably, described water suction felt is three-decker, and intermediate layer is absorbent material, and two boundary layers are felt, described water suction
Material is by starch grafted acrylate, graft acrylamide, high substituted degree cross-linked carboxymethyl cellulose, cross-linked carboxymethyl fiber
At least one structure in element graft acrylamide, cross-linking type hydroxyethyl cellulose graft acrylamide polymer, sodium polyacrylate
The particulate material become.
As preferably, any one during magnet arrangement is annular, U-shaped, column type in described Magnetic filtration device bag, Magnet is fixed
Position is in the middle part of Magnetic filtration device bag internal layer or Magnetic filtration device bag.
As preferably, four edges of described grease-box are respectively welded with annulus, through there being annulus rope in annulus, each
Through having annulus rope, every annulus rope to be provided with a hook in annulus, on water suction four angles of felt, relevant position is provided with four ropes
The collar.
As preferably, described grease-box connects noble gas steel cylinder, grease-box and noble gas steel also by trachea
Trachea between Ping is provided with intake valve.
As preferably, the inlet tube of described lubricating oil pipeline and outlet are mounted on effusion meter.
Compared with prior art, advantages of the present invention and good effect are,
(1) seal isolation air by breathing bag and inert gas replacement thoroughly stops the existence of oxygen in fuel tank, prevent lubrication
Oil and oxygen react and cause the generation of oil ageing and other perils.(2) by the isolation of breathing bag, thoroughly prevent
Only the dust in air, moisture, various gas enter fuel tank and contact with lubricating oil.(3) by Magnetic filtration device bag to irony grinding
Absorption slow down metal to oil ageing facilitation.(4) use filtering accuracy to be better than 0.5um thicker than filter bag, thoroughly prevent
Only about 2um particulate matter enters and causes the abrasion to equipment of card valve and particulate matter between lubricating oil reversal valve.(5) water suction felt is not only
The moisture in lubricating oil can be absorbed, can adsorb simultaneously and hide the various mechanical admixtures burying in lubricating oil, prevent lubricating oil return
Impact fluctuation causes the mechanical admixture of tank bottoms and moisture to suspend, and the moisture that moisture alarm can detect in lubricating oil contains
Amount, sodium polyacrylate water absorption can reach 1,000 times of himself weight, and have lock water function, be inhaled by sodium polyacrylate
The moisture received is difficult to release, and The invention also achieves monitoring and the not parking replacing in real time of water suction felt.(6) filter top
Electro connecting pressure gauge can monitor the behaviour in service of filter bag, accomplish to change in time and unimpeded maintenance.(7) paper machine turnover lubrication
Installing intelligent flow meter on the pipeline of oil end, whether monitoring flow of lubrication meets lubrication needs and whether there is leakage in real time.
(8) this system is used can to extend more than Working Life of Lubricating Oil twice, the maintenance cycle one of extension device lubricating system
More than Bei.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required use in embodiment being described below
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be some embodiments of the present invention, for ability
From the point of view of the those of ordinary skill of territory, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the lubricating circulatory system structural representation of the present invention；Figure is respectively labeled as, 1 system itself, 2 grease-boxs,
3 grease pumps, 4 lubricating oil pipelines, 5 inlet tubes, 6 outlets, 7 filter bags, 8 tank filler sleeves, 9 manholes, 10 breathing bags, 11 water suctions
Felt, 12 electro connecting pressure gauges, 13 annulus ropes, 14 effusion meters.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with specific embodiment pair
The present invention is described further.It should be noted that the spy in the case of not conflicting, in embodiments herein and embodiment
Levy and can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but, the present invention also may be used
Being different from other modes described here with employing to implement, therefore, the present invention is not limited to the concrete of description described below
The restriction of embodiment.
Embodiment 1, the present embodiment provides the concrete knot of a kind of safe efficient type paper machine lubricating circulatory system as shown in Figure 1
Structure, whole system itself 1 includes the grease-box 2 in cube structure, lubricating oil pipeline 4 and is positioned on lubricating oil pipeline 4
Grease pump 3.Lubricating oil pipeline 4 is circulation line, uses the material immiscible with lubricating oil to make.Lubricating oil pipeline 4
Including outlet 6 and the inlet tube 5 that is back in grease-box for lubrication oil circulation, outlet 6 and inlet tube 5 are pacified
Equipped with filter bag 7, the quantity of filter bag 7 can be one or more.If installing many on outlet 6 or inlet tube 5
Individual filter bag 7, uses, between the most multiple filter bags 7, the mode being installed in parallel, and the benefit being installed in parallel is similar in circuit multiple
Parallel connection between electrical appliance, works between the filter bag 7 of the most multiple parallel connections and is independent of each other, when one of them filter bag 7 blocks, and nothing
All filter bags 7 need to be quit work, and parallel way has relatively low resistance and higher flux, improve work efficiency.
Filter bag 7 near outlet 6 may be located between grease-box 2 and grease pump 3, it is also possible to after being positioned at grease pump 3,
This is not defined.The sidewall of grease-box 2 is provided with tank filler sleeve 8 and manhole 9, also has one in tank filler sleeve 8 side
Through hole, referred to as fixing hole.Welding a short tube on fixing hole, the diameter of short tube matches with fixing hole.In lubrication
The inside of fuel tank is additionally provided with a breathing bag 10, and breathing bag 10 is fixed in the effect of short tube exactly, and fixing mode is: will breathe
Bag 10 collar extension flange, are then clamped on the outer wall of short tube with clip.In practical operation, oil to be lubricated is from tank filler sleeve 8
After oiling completes, use screw thread cap tightening way that fuel tank is the most hermetically sealed.The material of breathing bag 10 can be any insoluble
In the flexible material of lubricating oil, and only one of which opening.It is additionally provided with water suction felt 11 in the bottom of grease-box 2, uses
May the moisture of residual and partly other impurity in lubricating oil in removing.In order to ensure the effectiveness of water suction felt 11, at water suction felt
The middle part of 11 is provided with moisture detection probe, moisture detection probe and the display siren electricity outside grease-box 2
Property connect, to water suction felt 11 moisture peak in use be set, when water suction felt 11 in moisture
When exceeding setting value, the carrying out that display alarm is corresponding is reminded, and then water suction felt 11 taking-up is replaced or Regeneration Treatment.
In order to monitor the resistance situation of the filter bag 7 on outlet 6 and inlet tube 5 in real time, in the mistake that inlet tube 5 and outlet 6 are installed
Filter bag 7 top is provided with electro connecting pressure gauge 12, and electro connecting pressure gauge 12 is also electrically connected with display alarm.To inlet tube
5 and outlet 6 on filter bag 7 monitor in real time.When pressure reaches the peak that electric contact namely sets, connect pressure
Power display alarm, display alarm is reported to the police, and notifies to change filter bag 7, and the bag bucket bucket two ends valve closing this filter bag 7 both may be used
With opened filter top blind flange, pull out former filter bag 7, put into new filter bag 7, recover cover plate original state and i.e. change complete.
In order to improve the filter effect of filter bag 7, the filtering accuracy of the filter bag 7 on inlet tube 5 and outlet 6 is carried out
Preferably.In the present embodiment, the filtering accuracy of the filter bag 7 outlet 6 and inlet tube 5 installed is 0.1-0.5 μm.In order to
The ferrous metal chip got off by mill in adsorpting lubrication oil system in time, the filter bag 7 on inlet tube 5 is Magnetic filtration device bag.Right
Other through holes offered on grease-box 2 and the dimensional conditions of short tube, be preferably as follows: consolidating that tank filler sleeve 8 side has
Determining bore dia is 50-300mm, and described stub length is 50-200mm.
In order to ensure the soaking effect of water suction felt 11, water suction felt 11 is three-decker, and intermediate layer is absorbent material, two boundary layers
For felt, the setting of felt can be with the part fine particle in adsorpting lubrication oil.Absorbent material is starch grafted acrylate, connects
Branch acrylamide, high substituted degree cross-linked carboxymethyl cellulose, cross-linked carboxymethyl cellulose graft acrylamide, cross-linking type ethoxy
At least one in cellulose graft acrylamide polymer, sodium polyacrylate, absorbent material is made up of particulate material.
In order to preferably realize the scrap iron removing effect of Magnetic filtration device bag 7, the Magnetic filtration device bag in the present embodiment is commonly
Filter bag 7 on the basis of, in place place alnico magnets prepare.In Magnetic filtration device bag, magnet arrangement is annular, U
Any one in type, column type, Magnet fixed position is in the middle part of Magnetic filtration device bag internal layer or Magnetic filtration device bag.The position of Magnet
The inwall of Magnetic filtration device bag can be close to, such as, fix one layer of a diameter of 3-20mm, the ring of thickness 2-20mm at filter bag inwall
Shape permanent magnet；Other mode such as can make a permanent bar magnet, and is suspended on Magnetic filtration device bag
Center.
In order to realize the replacing of water suction felt 11 under normal operating conditions, four edges at grease-box 2 are respectively welded with
Annulus, through having an annulus rope 13, every annulus rope 13 to be provided with a hook, on water suction 11 4 angles of felt in each annulus
Relevant position is provided with four rope sling rings.Wherein, the interior diameter of rustless steel annulus is between 15-30mm, and the diameter of annulus rope 13 exists
Between 5-10mm, four angles of water suction felt 11 are tangled by the hook that annulus rope 13 is arranged, and then pull four annulus ropes 13, just
Water suction felt 11 can be laid in the bottom of grease-box 2 or water suction felt 11 is pulled out, thus can be implemented in lubricating oil
Case 2 is outside changes water suction felt 11 under not end-of-life state.Can be used for hanging and fixing at one annulus of manhole 9 interior welds
Annulus rope 13.Concrete operation step is: open manhole 9, and the rope sling ring at four angles of water suction felt 11 is hung over bottom grease-box 2
On the hook of four corresponding annulus ropes 13, pull annulus rope 13, make water suction felt 11 progress in grease-box 2, when each
Just this annulus rope 13 is fixed on the hook on grease-box 2 manhole 9 wall when the annulus rope 13 at angle is all blocked by rustless steel annulus
On, the like；Then holding wire is drawn out on the moisture alarm outside fuel tank, covers manhole 9 cover plate, tighten each
Individual screw.
In order to keep the isolation of grease-box 2 and outside air, prevent the oxygen etc. in air from entering grease-box 2, right
Lubricating oil aoxidizes, and simultaneously for the peril being likely to result in after reducing inclusion of air, grease-box 2 is also by trachea even
Logical noble gas steel cylinder, the trachea between grease-box 2 and noble gas steel cylinder is provided with intake valve.Entering of lubricating oil pipeline 4
It is mounted on effusion meter 14 on mouth pipe 5 and outlet 6.When practical operation, lubricating oil is added grease-box by oil filler
2, open each valve, start grease pump 3, when lubricating oil normal reflow, termination of pumping, adjust lubricating oil liquid level, make lubricating oil
Amount within the scope of regulation, then in fuel tank, be filled with noble gas, such as nitrogen by tank filler sleeve 8, carry out air displacement,
Tighten tank filler sleeve 8 after being replaced to cover, make air-locked sealing state.
The above, be only presently preferred embodiments of the present invention, is not the restriction that the present invention makees other form, appoints
What those skilled in the art changed possibly also with the technology contents of the disclosure above or be modified as equivalent variations etc.
Effect embodiment is applied to other field, but every without departing from technical solution of the present invention content, according to the technical spirit of the present invention
Any simple modification, equivalent variations and the remodeling being made above example, still falls within the protection domain of technical solution of the present invention.
Claims (7)
1. a safe efficient type paper machine lubricating circulatory system, including system itself, described system itself include grease-box,
Grease pump and lubricating oil pipeline, described lubricating oil pipeline includes outlet and inlet tube, it is characterised in that: described outlet and
At least two filter bag all it is installed in parallel on inlet tube；Described grease-box includes tank filler sleeve, manhole, also opens in tank filler sleeve side
Having fixing hole, fixing hole welds the short tube supporting with it, described grease-box is internally provided with breathing bag, and breathing bag collar extension turns over
It is clamped on short tube outer wall with clip behind limit, bottom grease-box, is provided with water suction felt, moisture is installed in the middle part of described water suction felt
The filter bag top that detection probe, inlet tube and outlet are installed is provided with electro connecting pressure gauge, described moisture detection probe
And electro connecting pressure gauge is all electrically connected with the display alarm outside grease-box by wire.
A kind of safe efficient type paper machine lubricating circulatory system the most according to claim 1, it is characterised in that: described outlet
The filtering accuracy of the filter bag installed on pipe and inlet tube is 0.1-0.5 μm, and the filter bag on described inlet tube is Magnetic filtration device
Bag；The a diameter of 50-300mm of fixing hole having in tank filler sleeve side, described stub length is 50-200mm.
A kind of safe efficient type paper machine lubricating circulatory system the most according to claim 1, it is characterised in that: described water suction
Felt is three-decker, and intermediate layer is absorbent material, and two boundary layers are felt, described absorbent material be by starch grafted acrylate,
Graft acrylamide, high substituted degree cross-linked carboxymethyl cellulose, cross-linked carboxymethyl cellulose graft acrylamide, cross-linking type hydroxyl second
The particulate material that at least one in base cellulose graft acrylamide polymer, sodium polyacrylate is constituted.
A kind of safe efficient type paper machine lubricating circulatory system the most according to claim 2, it is characterised in that: described magnetic
Any one during magnet arrangement is annular, U-shaped, column type in filter bag, Magnet fixed position be Magnetic filtration device bag internal layer or
In the middle part of Magnetic filtration device bag.
A kind of safe efficient type paper machine lubricating circulatory system the most according to claim 1, it is characterised in that: described lubrication
Four edges of fuel tank are respectively welded with annulus, through having annulus rope, every annulus rope to be provided with a hook in each annulus,
On water suction four angles of felt, relevant position is provided with four rope sling rings.
A kind of safe efficient type paper machine lubricating circulatory system the most according to claim 1, it is characterised in that: described lubrication
Fuel tank connects noble gas steel cylinder also by trachea, and the trachea between grease-box and noble gas steel cylinder is provided with intake valve.
A kind of safe efficient type paper machine lubricating circulatory system the most according to claim 1, it is characterised in that: described lubrication
It is mounted on effusion meter on the inlet tube of oil pipe line and outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610603628.XA CN106090590A (en) | 2016-07-28 | 2016-07-28 | Safe efficient type paper machine lubricating circulatory system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610603628.XA CN106090590A (en) | 2016-07-28 | 2016-07-28 | Safe efficient type paper machine lubricating circulatory system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106090590A true CN106090590A (en) | 2016-11-09 |
Family
ID=57478275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610603628.XA Pending CN106090590A (en) | 2016-07-28 | 2016-07-28 | Safe efficient type paper machine lubricating circulatory system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106090590A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405008A (en) * | 2021-07-07 | 2021-09-17 | 常州科华电伴热器材有限公司 | Intelligent externally-hung type oiling device for crown block |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405008A (en) * | 2021-07-07 | 2021-09-17 | 常州科华电伴热器材有限公司 | Intelligent externally-hung type oiling device for crown block |
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Application publication date: 20161109 |
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