CN106122181A - Fully-mechanized mining working hydraulic system defecator - Google Patents
Fully-mechanized mining working hydraulic system defecator Download PDFInfo
- Publication number
- CN106122181A CN106122181A CN201610681967.XA CN201610681967A CN106122181A CN 106122181 A CN106122181 A CN 106122181A CN 201610681967 A CN201610681967 A CN 201610681967A CN 106122181 A CN106122181 A CN 106122181A
- Authority
- CN
- China
- Prior art keywords
- filter
- defecator
- hydraulic system
- water inlet
- fully
- 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
Links
- 238000005065 mining Methods 0.000 title claims abstract description 16
- 239000000839 emulsion Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000010865 sewage Substances 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 12
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 9
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/26—Hydraulic or pneumatic control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/08—Regeneration of the filter
- B01D2201/086—Regeneration of the filter using fluid streams co-current to the filtration direction
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses fully-mechanized mining working hydraulic system defecator, including the feed water filter being arranged between supply channel and emulsion pump box, and the support filter being arranged between emulsion power pack and hydraulic support, it is characterized in that, also include back liquid filter and suction filter, described time liquid filter is arranged in the return line between described hydraulic support and described emulsion pump box, what described suction filter was arranged between described emulsion power pack and described emulsion pump box goes on Cheng Guanlu, described time liquid filter and described suction filter are the back flush type filter that structure is identical.Feed liquor and time liquid stroke are added and organize backwash filter more by the present invention targetedly, are significantly reduced and improve hydraulic system pollution situation, improve system stability and reliability；Present configuration is simple, with low cost, it is simple to install, rinse, safeguard, be greatly saved cost of equipment maintenance, has huge economy, safety benefit.
Description
Technical field
The present invention relates to mine hydraulic system filter technology field, be specifically related to fully-mechanized mining working hydraulic system and filter dress
Put.
Background technology
The hydraulic system that underground coal mine fully-mechanized mining working uses refers mainly to organize hydraulic shield support and the most supporting breast more
Change liquid feeding and liquid back pipe road system: emulsion is mixed homogeneously with water in emulsion pump box, under the effect of emulsion power pack
Being fed in the admission chamber of each hydraulic support, then the liquid outlet from each hydraulic support is passed straight back to emulsion pump box, completes
Once circulate.Filter dress it is typically provided between emulsion pump box and supply channel, between emulsion power pack and hydraulic support
Put, to remove the impurity in water and feeding emulsion, the sealing of the protection the most various sealing ring of hydraulic support internal structure
And stability.In actual production process, due to hydraulic support substantial amounts, use frequency high, when potted component and pipe fitting etc.
After spare part is aging, can occur successively deliquescing, chap, dissolve, the situation such as plastic deformation, thus cause seal wear, not only cause
System alters the phenomenon of leakage, also produces substantial amounts of impurity and is mixed in emulsion, wraps tiny in emulsion high speed reflux course
Granule foreign, the impact object surface such as sealing member, jack and contact assembly, impact way groove mark, and supervene new
Impurity, can increase the weight of again impact failure, forms vicious cycle；Further, since emulsion is dense during long-time ground is deposited and installed
Degree does not reaches the reasons such as requirement, is easily caused emulsion and goes bad, fouls, destroys its basic structure, cause hydraulic support to seal
Circle accelerated ageing.Existing filter is arranged and is only filtered the part workshop section of emulsion feeding process, it is difficult to the quickest
The impurity removed in emulsion, cause the working life of hydraulic support and stability to decline to a great extent, therefore, it is necessary to again set
Count more perfect filtration system, to meet the use requirement of hydraulic system.
Summary of the invention
The present invention is directed to above-mentioned technical problem and propose a kind of more improving and the fully-mechanized mining working hydraulic system mistake of system
Filter device, effectively reduces the impurity content in cyclic process emulsion, improves the performance and used life of hydraulic system.
The present invention solves above-mentioned technical problem by the following technical solutions: fully-mechanized mining working hydraulic system defecator, bag
Include the feed water filter being arranged between supply channel and emulsion pump box, and be arranged at emulsion power pack and hydraulic support it
Between support filter, it addition, also include back liquid filter and suction filter, described time liquid filter is arranged at described hydraulic pressure
In return line between support and described emulsion pump box, described suction filter is arranged at described emulsion power pack with described
Going on Cheng Guanlu between emulsion pump box, described time liquid filter and described suction filter are the backwash that structure is identical
Formula filter.
Optimizing, described back flush type filter includes that housing, the upper end of described housing are provided with opening, described opening part
It is provided with a defecator；Described defecator includes that a filter chamber, the lower end of described filter chamber are provided with a cartridge filter, described
Cartridge filter is plugged in described housing by described opening；At least one outlet it is provided with on the sidewall of described filter chamber, with
And first recoil water inlet；It is provided with at least one water inlet on the sidewall of described housing, and one of them water inlet is arranged
The second recoil water inlet, described first recoil water inlet and described second recoil water inlet is had to be connected by sebific duct；Described housing
Bottom on be provided with a sewage draining exit, each described outlet, each described water inlet, described sewage draining exit and described second recoil into
Control valve it is provided with at the mouth of a river.
Optimizing, described outlet is two, is separately positioned on upper wall and the sidewall of described filter chamber.
Optimizing, described water inlet is two, and being arranged above and below is arranged on the sidewall of described housing and closes on described sewage draining exit
On position.
Optimize, described cartridge filter has filtering holes and groove.
Optimizing, the lower end of described housing is provided with the supporting leg of tripod type.
Optimizing, described opening part is provided with high pressure fixed disk, and described filter chamber lower end is provided with corresponding identical high pressure
Fixed disk, two high pressure fixed disks are bolted connection, thus are fastened in described housing by the cartridge filter of defecator.
It is an advantage of the current invention that: the present invention according to the application bottleneck of existing filtration system, to feed liquor and return liquid remove the gred into
Go redesign, added many group back flush type filters targetedly, be significantly reduced and improve hydraulic system dirty
The situation of dye, improves hydraulic system and stablizes and reliability；Present configuration is simple, with low cost, it is simple to install, rinse, tie up
Protect, be greatly saved cost of equipment maintenance, there is huge economy, safety benefit.
Accompanying drawing explanation
Fig. 1 is the scattergram of fully-mechanized mining working hydraulic system defecator of the present invention；
Fig. 2 is the overall structure schematic diagram of the back flush type filter of the present invention；
Fig. 3 is the structural representation of the defecator of back flush type filter；
Fig. 4 is the Section A-A figure of the cartridge filter part of defecator in Fig. 3；
Fig. 5 is the structural representation of the housing of back-flushing filter.
Detailed description of the invention
As it is shown in figure 1, fully-mechanized mining working hydraulic system defecator, including be arranged at supply channel and emulsion pump box it
Between feed water filter 1, and the support filter 2 being arranged between emulsion power pack and hydraulic support, it addition, also include back
Liquid filter 3 and suction filter 4, described time liquid filter 3 is arranged between described hydraulic support and described emulsion pump box
Return line on, what described suction filter 4 was arranged between described emulsion power pack and described emulsion pump box removes journey pipe
Lu Shang, described time liquid filter 3 and described suction filter 4 are the back flush type filter that structure is identical.
As in figure 2 it is shown, described back flush type filter includes housing 5, the upper end open of housing 5, opening part is provided with one
Defecator；Defecator includes a filter chamber 6, and the lower end of filter chamber 6 is provided with a cartridge filter 7, described housing 5 upper end open
The lower end of place and described filter chamber 6 is additionally provided with corresponding high pressure fixed disk 8, and described cartridge filter 7 inserts housing 5 by opening
In, two high pressure fixed disk 8 bolts described in recycling are fastenedly connected, and are fixed in housing 5 by cartridge filter 7；The side of filter chamber 6
At least one outlet, and the first recoil water inlet 61 it is provided with on wall；It is provided with at least one on the sidewall of housing 5 and enters water
Mouthful, and one of them water inlet is provided with the second recoil water inlet 51, the first recoil water inlet 61 and the second recoil water inlet
51 are connected by sebific duct 9；A sewage draining exit 52 it is provided with on the bottom of housing 5,
Further, outlet is two, is respectively arranged on the water outlet on the outlet 62 of the upper wall of filter chamber 6 and sidewall
Mouth 63, outlet 62 is provided with control valve 621, and outlet 63 is provided with control valve 631.
Further, water inlet is two, and being respectively arranged above and below is arranged on the sidewall of housing 5 and closes on the position of sewage draining exit 52
On water inlet 53,54, wherein, water inlet 53 is provided with control valve 531, water inlet 54 is provided with control valve 541,
It is provided with on sewage draining exit 52 on control valve 521, and the second recoil water inlet 51 and is provided with control valve 511.
Further, such as Fig. 3, shown in Fig. 4, cartridge filter 7 has filtering holes 71 and groove 72.Wherein cartridge filter 7 can set
Being set to a diameter of Φ 90, filtering holes 71 is preferably arranged to Φ 8, and 12 are distributed on cartridge filter 7.Groove 72 is preferably provided with groove width
For 3mm, groove is 2mm deeply.
Further, as it is shown in figure 5, the lower end of housing 5 is provided with tripod type supporting leg 55, the preferred Φ's 8 of supporting leg 55
Reinforcing bar.
All connecting portions in the back flush type filter of the present invention the most all use electric welding.
The operation principle of the back-flushing filter of the present invention is as follows:
When back-flushing filter normally works, controlling valve 531,541 is opening, controls valve 621,631 for opening
State, now needs the emulsion processed to utilize principle of inertia by the fine particle impurity in water by the filtering holes 71 on filter cylinder 7
And sedimentation of suspension is near sewage draining exit 52.When the fine particle impurity retained on cartridge filter 7 in emulsion and float reach
During some, the control valve 521 of sewage draining exit 52 is opened, the impurity being bonded in filter filter chamber 6 is rinsed out, until
Till discharging clean emulsion, the control valve 521 turning off sewage draining exit 52 enters normal operating conditions.
When filter carries out backwash, controlling valve 531,541 is closed mode, controls valve 621,631 for closing
State, controlling valve 511 is opening, and the control valve 521 of sewage draining exit 52 is opening, and at this moment current are forced from filtration
The filtering holes 71 of cylinder 7 enters in filter chamber, adheres to the impurity outside cartridge filter 7 from filtering holes 71 back flush, thus reaches
Purpose to clean filtering cylinder 7.
The foregoing is only the preferred embodiment of the invention, not in order to limit the invention, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of innovation and creation and principle, should be included in the invention
Protection domain within.
Claims (7)
1. fully-mechanized mining working hydraulic system defecator, including the feed water filtration being arranged between supply channel and emulsion pump box
Device, and the support filter being arranged between emulsion power pack and hydraulic support, it is characterised in that also include back liquid filter
And suction filter, described time liquid filter is arranged at the return line between described hydraulic support and described emulsion pump box
On, what described suction filter was arranged between described emulsion power pack and described emulsion pump box goes on Cheng Guanlu, described time
Liquid filter and described suction filter are the back flush type filter that structure is identical.
2. fully-mechanized mining working hydraulic system defecator as claimed in claim 1, it is characterised in that described back flush type filters
Device includes that housing, the upper end of described housing are provided with opening, and described opening part is provided with a defecator；Described defecator bag
Including a filter chamber, the lower end of described filter chamber is provided with a cartridge filter, and described cartridge filter is plugged in described shell by described opening
Internal；At least one outlet, and the first recoil water inlet it is provided with on the sidewall of described filter chamber；The sidewall of described housing
On be provided with at least one water inlet, and one of them water inlet is provided with the second recoil water inlet, described first recoil into
The mouth of a river and described second recoil water inlet are connected by sebific duct；Be provided with a sewage draining exit on the bottom of described housing, each described in go out
The mouth of a river, each described water inlet, described sewage draining exit and described second recoil water inlet are provided with control valve.
3. fully-mechanized mining working hydraulic system defecator as claimed in claim 2, it is characterised in that described outlet is two
Individual, it is separately positioned on upper wall and the sidewall of described filter chamber.
4. fully-mechanized mining working hydraulic system defecator as claimed in claim 2 or claim 3, it is characterised in that described water inlet is
Two, being arranged above and below is arranged on the sidewall of described housing and closes on the position of described sewage draining exit.
5. fully-mechanized mining working hydraulic system defecator as claimed in claim 4, it is characterised in that have on described cartridge filter
Filtering holes and groove.
6. fully-mechanized mining working hydraulic system defecator as claimed in claim 4, it is characterised in that the lower end of described housing sets
It is equipped with tripod type supporting leg.
7. fully-mechanized mining working hydraulic system defecator as claimed in claim 2, it is characterised in that described opening part is provided with
High pressure fixed disk, described filter chamber lower end is provided with corresponding identical high pressure fixed disk, and two high pressure fixed disks are tight by bolt
It is solidly connected, the cartridge filter of described defecator is fastened in described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610681967.XA CN106122181A (en) | 2016-08-17 | 2016-08-17 | Fully-mechanized mining working hydraulic system defecator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610681967.XA CN106122181A (en) | 2016-08-17 | 2016-08-17 | Fully-mechanized mining working hydraulic system defecator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106122181A true CN106122181A (en) | 2016-11-16 |
Family
ID=57279766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610681967.XA Pending CN106122181A (en) | 2016-08-17 | 2016-08-17 | Fully-mechanized mining working hydraulic system defecator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106122181A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040256308A1 (en) * | 2002-12-23 | 2004-12-23 | Yates Brian Glenn | Fluid filtration system including replaceable filter module |
| US20050121401A1 (en) * | 2003-12-05 | 2005-06-09 | Walton Frank A. | Backwash flushing filter |
| CN201287008Y (en) * | 2008-10-23 | 2009-08-12 | 平顶山煤矿机械有限责任公司 | Full automatic high-pressure reverse cleaning filtering system for hydraulic support |
| CN102188927A (en) * | 2010-03-19 | 2011-09-21 | 淮南矿业(集团)有限责任公司 | Automatic proportioning system of emulsified liquid and hydraulic feed system |
| CN202070219U (en) * | 2011-03-31 | 2011-12-14 | 睿能太宇（沈阳）能源技术有限公司 | Full-automatic back flushing filter |
| CN102635602A (en) * | 2012-04-24 | 2012-08-15 | 中煤北京煤矿机械有限责任公司 | High-pressure manual pilot backwash filter station |
| CN203123656U (en) * | 2013-02-27 | 2013-08-14 | 梅振清 | Automatic reverse-washing filter |
| CN203483938U (en) * | 2013-09-26 | 2014-03-19 | 盛建飞 | Backflush filter |
| CN104128027A (en) * | 2014-08-05 | 2014-11-05 | 余姚市生碧源环保科技有限公司 | Backwash laminated filter |
| CN104533478A (en) * | 2014-12-19 | 2015-04-22 | 郑州煤矿机械集团股份有限公司 | Hydraulic system used for recycling emulsified liquid of coal face |
| CN204436430U (en) * | 2015-01-27 | 2015-07-01 | 郑州四维矿业机械有限责任公司 | A kind of coal mine fully-mechanized mining work is for return liquid system |
| JP3199007U (en) * | 2015-05-22 | 2015-07-30 | 東洋スクリーン工業株式会社 | Continuous filtration device |
| CN205252695U (en) * | 2015-11-18 | 2016-05-25 | 中国神华能源股份有限公司 | Hydraulic support emulsion circulation system |
| CN205876868U (en) * | 2016-08-17 | 2017-01-11 | 淮南矿业(集团)有限责任公司 | Combine and adopt working face hydraulic system filter equipment |
-
2016
- 2016-08-17 CN CN201610681967.XA patent/CN106122181A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040256308A1 (en) * | 2002-12-23 | 2004-12-23 | Yates Brian Glenn | Fluid filtration system including replaceable filter module |
| US20050121401A1 (en) * | 2003-12-05 | 2005-06-09 | Walton Frank A. | Backwash flushing filter |
| CN201287008Y (en) * | 2008-10-23 | 2009-08-12 | 平顶山煤矿机械有限责任公司 | Full automatic high-pressure reverse cleaning filtering system for hydraulic support |
| CN102188927A (en) * | 2010-03-19 | 2011-09-21 | 淮南矿业(集团)有限责任公司 | Automatic proportioning system of emulsified liquid and hydraulic feed system |
| CN202070219U (en) * | 2011-03-31 | 2011-12-14 | 睿能太宇（沈阳）能源技术有限公司 | Full-automatic back flushing filter |
| CN102635602A (en) * | 2012-04-24 | 2012-08-15 | 中煤北京煤矿机械有限责任公司 | High-pressure manual pilot backwash filter station |
| CN203123656U (en) * | 2013-02-27 | 2013-08-14 | 梅振清 | Automatic reverse-washing filter |
| CN203483938U (en) * | 2013-09-26 | 2014-03-19 | 盛建飞 | Backflush filter |
| CN104128027A (en) * | 2014-08-05 | 2014-11-05 | 余姚市生碧源环保科技有限公司 | Backwash laminated filter |
| CN104533478A (en) * | 2014-12-19 | 2015-04-22 | 郑州煤矿机械集团股份有限公司 | Hydraulic system used for recycling emulsified liquid of coal face |
| CN204436430U (en) * | 2015-01-27 | 2015-07-01 | 郑州四维矿业机械有限责任公司 | A kind of coal mine fully-mechanized mining work is for return liquid system |
| JP3199007U (en) * | 2015-05-22 | 2015-07-30 | 東洋スクリーン工業株式会社 | Continuous filtration device |
| CN205252695U (en) * | 2015-11-18 | 2016-05-25 | 中国神华能源股份有限公司 | Hydraulic support emulsion circulation system |
| CN205876868U (en) * | 2016-08-17 | 2017-01-11 | 淮南矿业(集团)有限责任公司 | Combine and adopt working face hydraulic system filter equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202343336U (en) | Ultrahigh-pressure cyclone desanding device | |
| CN105221407A (en) | A kind of hydraulic end of plunger pump assembly | |
| CN203507660U (en) | Back-flushing filter for fully-mechanized coal mining water supply pipeline | |
| CN202125385U (en) | Fuel oil filter | |
| CN205876868U (en) | Combine and adopt working face hydraulic system filter equipment | |
| CN209188241U (en) | A kind of pleat folding oily filter core | |
| CN202237471U (en) | Combined decontamination automatic water filter | |
| CN103375397A (en) | Plunger pump fluid end assembly | |
| CN106122181A (en) | Fully-mechanized mining working hydraulic system defecator | |
| CN205252657U (en) | Low pressure slurry filter for bore hole pump | |
| KR101630414B1 (en) | Oil Purifing Apparatus | |
| CN204261420U (en) | A kind of explosion-proof type gas control full-automatic back washing filter | |
| CN206290302U (en) | A kind of efficient non-return cleaner of machine oil | |
| CN203145914U (en) | Automatic high-pressure sand discharging device | |
| CN111636856A (en) | Throttling kill manifold sand control device | |
| CN213205865U (en) | Fuel tank prefilter for engineering machinery | |
| CN203272121U (en) | Fluid end assembly of plunger pump | |
| CN203918637U (en) | Lathe cooling water recirculation system | |
| CN205089589U (en) | Fluid end assembly of plunger pump | |
| CN207446846U (en) | A kind of CNC high-pressure cleaning machine cisten mechanism | |
| CN212359732U (en) | Throttling kill manifold sand control device | |
| CN107639067A (en) | A kind of CNC high-pressure cleaning machine cisten mechanism | |
| CN212369717U (en) | Broken stone booster valve | |
| CN201085961Y (en) | Mine water filter | |
| CN220633275U (en) | High-flow flushing and filtering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |