CN102921220B - Back cleaning filter having filtration units on the outer side of device body - Google Patents
Back cleaning filter having filtration units on the outer side of device body Download PDFInfo
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- CN102921220B CN102921220B CN201210052440.2A CN201210052440A CN102921220B CN 102921220 B CN102921220 B CN 102921220B CN 201210052440 A CN201210052440 A CN 201210052440A CN 102921220 B CN102921220 B CN 102921220B
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- outlet
- sewage
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- 238000004140 cleaning Methods 0.000 title claims abstract description 35
- 238000001914 filtration Methods 0.000 title claims abstract description 24
- 239000010865 sewage Substances 0.000 claims abstract description 117
- 230000008676 import Effects 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 230000000740 bleeding effect Effects 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 27
- 239000012535 impurity Substances 0.000 abstract description 15
- 239000012530 fluid Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000004804 winding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
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Classifications
-
- 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
- B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
- B01D29/46—Edge filtering elements, i.e. using contiguous impervious surfaces of flat, stacked bodies
-
- 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
- B01D29/114—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 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
- B01D29/50—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 multiple filtering elements, characterised by their mutual disposition
- B01D29/52—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 multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- 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
- B01D29/668—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with valves, e.g. rotating valves for coaxially placed filtering elements
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The present invention relates to an apparatus for filtering a fluid medium conveyed by a pipeline, specifically to a back cleaning filter having filtration units on the outer side of a device body, wherein the back cleaning filter is provided for carrying out filtering and back cleaning on impurities in a medium. The back cleaning filter mainly comprises a device body and n filtration units, wherein a unit inlet of the filtration unit is connected with an outlet interface of the device body through a connection member, a unit outlet is connected with an inlet interface of the device body through a connection member, the N outlet interfaces are correspondingly communicated with n cavity outlets through pipelines, filtration cores are arranged inside the filtration units, the device body is provided with a sewage discharge device and a sewage collection device, the sewage discharge device is provided with sewage suction ports, the device body is provided with a sewage discharge pipeline, the sewage discharge pipeline is communicated with the sewage discharge device and the sewage suction port through the sewage collection device, and a driving device is arranged on the outer side of the device body, and acts to drive the sewage discharge device, such that the sewage suction ports are individually aligned to the N cavity outlets. With the present invention, problems of trouble maintenance, more control elements, complex control, high failure, high maintenance rate and even incapable use in high temperature and high pressure environments, and the like of the back cleaning filter are solved.
Description
Technical field
The device that the fluid media (medium) that the present invention relates to that pipeline is carried filters, specifically a kind of filter element, in the anti-filter rinsed in body outside, can filter and can instead clean by the impurity in fluid medium under various environments for use.
Background technology
Existing anti-filter rinsed has filter core in body, for example: Chinese patent application (application number 200620091540.6 and application number 200910012515.2); Also have filter core in filter element and filter element for example, in body outside: Chinese patent application (application number 200880002878.1 and application number 200810144808.1).The anti-filter rinsed of several forms of roughly the same patent application (application number 200620091540.6 and application number 200910012515.2), the filter core in its body is generally the filter core that disk type, metal winding, mesh grid formula etc. can instead be cleaned.Filter core is trapped in for example, the impurity that its filtering accuracy be greater than the aperture (gap) on its filter core that is greater than in medium (water) on filter core, completes its filtering function; In the time that impurity is trapped into a certain degree, manually or automatically drive blowdown apparatus, make the MEDIA FLOW (for example water) by certain filter core in filter change the flow direction, by counter the washing of impurity being trapped on filter core, and discharge body outside, complete its anti-cleaning function.One period of filter work, viscosity, the oiliness impurity that cannot wash by its anti-cleaning function increases the parts damages that need on manual cleaning and filter core or filter core on filter core to be needed maintenance, changes, and just filter body must be uncapped filter core is carried out to manual cleaning or maintenance.The workload that body entirety is uncapped is not only large, and bothers very much again, generally all needs professional maintenance troop and crane gear, and expense is higher.Have at needs again and supply continuously, in the process system of defeated medium, must be provided with reserve filter, during in order to maintenance, come into operation, cost is high.Roughly the same patent application (application number 200880002878.1 and application number 200810144808.1), filter core in filter element and filter element in the anti-filter rinsed of several forms in body outside, because it is to adopt solenoid directional control valve, distributor, pilot valves etc. are various electric, the film chamber hydraulic coupling of hydraulic control component control one reversal valve, allow diaphragm produce change in displacement, make closing and opening realization conversion of sewage draining exit and medium inlet, thereby make the MEDIA FLOW (for example water) by filter core in certain filter element change the flow direction, by counter the washing of impurity being trapped on filter core, and discharge outside body, complete its anti-cleaning function.For this reason, control element is many, control procedure is loaded down with trivial details, so trouble point is many, fault rate is high, especially in the medium larger containing toughness, oiliness microparticle impurity and the working environment that contains the high-temperature water that calcium ions and magnesium ions is larger, the calcium ions and magnesium ions that the hydraulic control component of various precisions is extremely easily separated out by viscosity, oiliness impurity and high-temperature water stops up, and maintenance rate, fault rate are higher; In addition, the diaphragm of hydraulic coupling control mostly is soft colloid material, and its fragile rate in the work condition environment of HTHP is very high, causes the anti-filter rinsed of this kind of form cannot normally use in the work condition environment of HTHP.
Summary of the invention
For above-mentioned situation, the invention provides the anti-cleaning and filtering apparatus of a kind of filter element in body outside, in solving anti-filter rinsed maintenance troublesome problem, solve again anti-filter rinsed control element many, control loaded down with trivial details, the problem such as fault, maintenance rate are high and cannot normally use in the medium larger containing viscosity, oiliness impurity and high-temperature water.
Technical scheme of the present invention is:
Filter element is in the anti-filter rinsed in body outside, and this filter mainly comprises body, a N filter element; Wherein, be provided with dividing plate in body, device cavity is divided into the front dielectric cavity of filter and the rear dielectric cavity of filter by dividing plate; Or body is divided into upper and lower two bodies, body chamber is above the front dielectric cavity of filter, and body chamber is below dielectric cavity after filtering; Body is provided with import, and import communicates with dielectric cavity before filter by pipeline, and body is provided with outlet, and outlet communicates with dielectric cavity after filter by pipeline; Or the body above of body is provided with import, body is below provided with outlet; Body outside is provided with N outgoing interface, before filter, in the body of dielectric cavity, be provided with N cavity outlet, N cavity outlet is by pipeline and N corresponding the communicating of outgoing interface, body outside is provided with N accessing port, after filter, in the body of dielectric cavity, be provided with N cavity import, N cavity import is by pipeline and N corresponding the communicating of accessing port; Body is provided with blowdown apparatus, and blowdown apparatus is provided with sewage discharge tube, and body is provided with sewage collection system, and blowdown apparatus one end is connected in sewage collection system, and communicates with it; On body, be provided with blowoff line, blowoff valve is housed on blowoff line, blowoff line is connected in sewage collection system, and communicate with it, blowoff line communicates with blowdown apparatus, sewage discharge tube by sewage collection system, and while opening blowoff valve, blowoff line communicates with ambient atmosphere; Be provided with drive unit in body outside, between drive unit and blowdown apparatus, be connected with moving part, drive unit action drives moving part, blowdown apparatus action, and sewage discharge tube is aimed at respectively N cavity outlet one by one; On filter element, be provided with unit inlet, on filter element, be provided with unit outlet, between the outlet of between unit inlet and outgoing interface and unit and accessing port, closely link together by attaching parts; In filter element, be provided with filter core, in filter element, one end is provided with unit seat, and filter core is connected on unit seat, by forming two chambeies in the filter element filtering unit on unit seat, between one side of filter core and unit inlet, being filter ante-chamber, is filter back cavity between the opposite side of filter core and unit outlet.
Described filter element is in the anti-filter rinsed in body outside, between between described unit inlet and outgoing interface and described unit outlet and accessing port, be all provided with stop valve, between outgoing interface and stop valve, between stop valve and unit inlet, between accessing port and stop valve, stop valve all closely links together by attaching parts between exporting with unit.
Described filter element, in the anti-filter rinsed in body outside, is provided with elastic rubber ring on described sewage discharge tube; Or, on sewage discharge tube, being provided with ozzle, one end of ozzle is with boss, and one end cover of ozzle is inserted in sewage discharge tube; Or one end cover of ozzle is inserted in sewage discharge tube outside.
Described filter element, in the anti-filter rinsed in body outside, is provided with spring in described ozzle one end, and spring top is on the boss of ozzle, and ozzle is close to certain cavity outlet place under the effect of spring; Or ozzle is close on an anchor ring of body inwall at N cavity outlet place.
Described filter element, in the anti-filter rinsed in body outside, is provided with constant voltage pipeline between two described filter elements, and constant voltage pipeline is provided with pipeline valve.
Described filter element, in the anti-filter rinsed in body outside, is provided with air bleeding valve in described body upper end; Or, be provided with air bleeding valve in described filter element upper end.
Described filter element, in the anti-filter rinsed in body outside, at described moving part and body, completes being tightly connected between body and moving part by a black box device; At described sewage collection system and blowdown apparatus, complete being tightly connected between sewage collection system and blowdown apparatus by a sealing device; The upper and lower cover of body and body each several part connect by flange and securing member, seal lock sealing; Or the capping of upper and lower two body blind ends of body and body each several part connect by flange and securing member, seal lock sealing.
Described anti-filter rinsed is opened blowoff valve by manual or electric intelligent control, driver drives moving part, blowdown apparatus action, make sewage discharge tube aim at respectively one by one N cavity outlet in body, make the conversion of N the counter one by one two states that cleans, filters of filter element of anti-filter rinsed, close blowoff valve by manual or electric intelligent control, stop driver, complete the anti-cleaning process of filter.
Described filter element is in the anti-filter rinsed in body outside, and filter element is single, double or arranges more.
Described filter element is in the anti-filter rinsed in body outside, and blowdown apparatus one end is provided with sewage draining exit, and blowdown apparatus is inserted in sewage collection system with sewage draining exit one end, and blowdown apparatus communicates with sewage collection system by sewage draining exit.
The invention has the beneficial effects as follows:
1, filter element of the present invention is in filter body outside, the maintenance of filter core is only needed to the filter element of the external side of replacer, while the present invention utilizes manually or the rotation of electric intelligent accessory drive drive blowdown apparatus, completes the conversion of " filtration " and " instead cleaning " two states by the simplest mechanical device and mechanical action.So, it is in solving the various forms of anti-filter rinsed maintenance troublesome problem of patent 200620091540.6 and 200910012515.2 roughly the same, the various forms of anti-filter rinsed control element that has solved again patent 200880002878.1 and 200810144808.1 is roughly the same many, control loaded down with trivial details, the problem such as fault, maintenance rate are high and cannot normally use in the medium larger containing viscosity, oiliness impurity and high-temperature water.
2, the import and export that the present invention is connected with body at filter element is set up stop valve; can realize filter core maintenance time, filter is without shutdown; in because of the continuous confession of the needs process system of defeated medium; only need come into operation by increase when a spare filtering cell is prepared against maintenance filter core in filter body outside more; without increasing reserve filter complete machine, reduce equipment investment cost.
Accompanying drawing explanation
Fig. 1, Fig. 2, Fig. 7-1, Fig. 2-1 are structural representation of the present invention.
Fig. 1 is a kind of external structure of the present invention and filter element generalized section.
In figure, 1-body; 2-filter element; 4-import; 5-outlet; 6-outgoing interface; 8-accessing port; 13-blowoff line; 15-blowoff valve; 16-drive unit; 17-moving part; 18-unit inlet; The outlet of 19-unit; 20-filter core; 21-unit seat; 28-air bleeding valve; Q1-filters ante-chamber; H1-filters back cavity.
Fig. 2 is a kind of body section of structure of the present invention.
In figure, 1-body; 3-dividing plate; 4-import; 5-outlet; 6-outgoing interface; 7-cavity outlet; 8-accessing port; The import of 9-cavity; 10-blowdown apparatus; 11-sewage discharge tube; 12-sewage collection system; 13-blowoff line; 15-blowoff valve; 17-moving part; Dielectric cavity before Q-filter; Dielectric cavity after H-filter; 101-sewage draining exit.
Fig. 7-1 is another structural profile of the present invention and filter element generalized section.
In figure, 1-body; 2-filter element; 4-import; 5-outlet; 6-outgoing interface; 7-cavity outlet; 8-accessing port; The import of 9-cavity; 10-blowdown apparatus; 11-sewage discharge tube; 12-sewage collection system; 13-blowoff line; 15-blowoff valve; 16-drive unit; 17-moving part; 18-unit inlet; The outlet of 19-unit; 20-filter core; 21-unit seat; 25-spring; 28-air bleeding valve; 112-ozzle; Dielectric cavity before Q-filter; Dielectric cavity after H-filter; Q1-filters ante-chamber; H1-filters back cavity; 101-sewage draining exit.
Fig. 2-1 is another body section of structure of the present invention.
In figure, 1-body; 4-import; 5-outlet; 6-outgoing interface; 7-cavity outlet; 8-accessing port; The import of 9-cavity; 10-blowdown apparatus; 11-sewage discharge tube; 12-sewage collection system; 13-blowoff line; 15-blowoff valve; 16-drive unit; 17-moving part; Dielectric cavity before Q-filter; Dielectric cavity after H-filter; 101-sewage draining exit.
Fig. 3～Fig. 6, structure and the generalized section of Fig. 3-1～Fig. 6-1 for setting up annex at sewage discharge tube in the present invention.
In Fig. 3, Fig. 3-1,7-cavity outlet; 10-blowdown apparatus; 11-sewage discharge tube; 111-elastic rubber ring;
In Fig. 4, Fig. 4-1,7-cavity outlet; 10-blowdown apparatus; 11-sewage discharge tube; 112-ozzle;
In Fig. 5, Fig. 5-1,7-cavity outlet; 10-blowdown apparatus; 11-sewage discharge tube; 112-ozzle; 25-spring;
In Fig. 6, Fig. 6-1,112-ozzle.
Fig. 7 is the structural representation with stop valve between filter element of the present invention and body.
In figure, 1-body; 2-filter element; 3-dividing plate; 4-import; 5-outlet; 6-outgoing interface; 7-cavity outlet; 8-accessing port; The import of 9-cavity; 10-blowdown apparatus; 11-sewage discharge tube; 12-sewage collection system; 13-blowoff line; 15-blowoff valve; 16-drive unit; 17-moving part; 18-unit inlet; The outlet of 19-unit; 20-filter core; 21-unit seat; 22-stop valve; 25-spring; 26-constant voltage pipeline; 27-pipeline valve; 28-air bleeding valve; 112-ozzle; Dielectric cavity before Q-filter; Dielectric cavity after H-filter; Q1-filters ante-chamber; H1-filters back cavity; 101-sewage draining exit.
Fig. 8 is stop valve section of structure in the present invention.
In figure, 2201-connector; 2202-valve rod; 2203-valve seat; 2205-flap.
Fig. 9, Fig. 9-1 are two kinds of filter element section of structures in the present invention.
In figure, 18-unit inlet; The outlet of 19-unit; 20-filter core; 21-unit seat; Q1-filters ante-chamber; H1-filters back cavity.
Figure 10～Figure 12 be several forms of selecting in the present invention can anti-cleaning and filtering cored structure schematic diagram.
Figure 10 is disk type filter core schematic diagram;
A disc schematic diagram on filter core disc post is crossed for disk type in Figure 10-1;
Figure 11 is metal winding filter core schematic diagram;
Figure 12 is metal net formula filter core schematic diagram;
Figure 13～Figure 14 is the structural representation of interconnected attaching parts between the each unit interface of each interface and outside and between the each unit interface in outside on a kind of body in the present invention.Figure 13 is for after assembling, and Figure 14 is for before assembling.
In figure, 3001-clip; 3002-sealing ring; 3003-bolt.
The specific embodiment
Filter element of the present invention mainly comprises body and N filter element in the anti-filter rinsed in body outside, between the outlet of between the unit inlet of filter element and the outgoing interface of body and unit and the accessing port of body, closely links together by attaching parts; N outgoing interface, by pipeline and N the corresponding connection of cavity outlet, is provided with filter core in filter element; In body, be provided with blowdown apparatus, blowdown apparatus is provided with sewage discharge tube, and body is provided with sewage collection system, and blowdown apparatus one end is connected in sewage collection system, and communicates with it; On body, be provided with blowoff line, blowoff valve is housed on blowoff line, blowoff line one end is connected in sewage collection system, and communicates with it; Blowoff line communicates with blowdown apparatus, sewage discharge tube by sewage collection system, is provided with drive unit in body outside, between it and blowdown apparatus, is connected with moving part, and drive unit action drives moving part, blowdown apparatus, makes sewage discharge tube aim at one by one respectively N cavity outlet.The invention solves anti-filter rinsed maintenance trouble, control element is many, control loaded down with trivial details, the problem such as fault, maintenance rate are high and cannot normally use in the medium more containing sticky contaminant and high-temperature water.In the present invention, N >=2.
As shown in Fig. 1～Fig. 7, Fig. 2-1～Fig. 7-1, filter element of the present invention, in the anti-filter rinsed in body outside, is made up of parts such as body 1, filter element 2, filter core 20, blowdown apparatus 10, drive unit 16, blowoff line 13, blowoff valves 15.
As shown in Figure 1, Figure 2, shown in Fig. 7, Fig. 2-1, Fig. 7-1, filter element of the present invention is as follows in the anti-filter rinsed structure in body outside: mainly comprise body 1, a N filter element 2 (in the present invention, the quantity of N is at least two); Wherein, as shown in Figure 1, Figure 2, shown in Fig. 7, dividing plate 3 is housed in body 1, body 1 inner chamber is divided into before filter dielectric cavity H after dielectric cavity Q and filter by dividing plate 3; As shown in Fig. 2-1, Fig. 7-1, body 1 is divided into upper and lower two bodies, and body chamber is above the front dielectric cavity Q of filter, and body chamber is below dielectric cavity H after filtering; As shown in Figure 1, Figure 2, shown in Fig. 7, body 1 is provided with import 4, import 4 by pipeline and filter before dielectric cavity Q communicate, body 1 is provided with outlet 5, outlet 5 communicates by the rear dielectric cavity H of pipeline and filter; As shown in Fig. 2-1, Fig. 7-1, the body above of body 1 is provided with import 4, and body is below provided with outlet 5; As shown in Figure 1, Figure 2, shown in Fig. 7, Fig. 2-1, Fig. 7-1, body 1 outside is provided with N outgoing interface 6, before filter, in the body of dielectric cavity Q, be provided with N cavity outlet 7, N cavity outlet 7 is by pipeline and N corresponding the communicating of outgoing interface 6, body 1 outside is provided with N accessing port 8, after filter, in the body of dielectric cavity H, be provided with N cavity import 9, N cavity import 9 is by pipeline and N corresponding the communicating of accessing port 8; In body 1 inner side, blowdown apparatus 10 is housed, blowdown apparatus 10 is provided with sewage discharge tube 11, body 1 is provided with sewage collection system 12, as shown in Figure 1, Figure 2, Fig. 7, as shown in Fig. 2-1, Fig. 7-1, blowdown apparatus 10 one end are provided with sewage draining exit 101, blowdown apparatus 10 is inserted in sewage collection system 12 with one end of sewage draining exit 101, and blowdown apparatus 10 communicates with sewage collection system 12 by sewage draining exit 101; Blowoff line 13 is housed on body 1, blowoff valve 15 is housed on blowoff line 13, blowoff line 13 is connected in sewage collection system 12, and communicate with it, blowoff line 13 communicates with blowdown apparatus 10, sewage discharge tube 11 by sewage collection system 12, as open blowoff valve 15, blowoff line 13 communicates with ambient atmosphere; In body 1 outside, drive unit 16 is housed, between drive unit 16 and blowdown apparatus 10, is connected with moving part 17, drive unit 16 actions drive moving part 17, blowdown apparatus 10 to move, and can make sewage discharge tube 11 aim at respectively one by one N cavity outlet 7;
As shown in Fig. 1, Fig. 7, Fig. 9, Fig. 7-1, Fig. 9-1, body 1 outside is provided with N filter element 2, on filter element 2, be provided with unit inlet 18, on filter element 2, be provided with unit outlet 19, filter core 20 is housed in filter element 2, be provided with unit seat 21 in the interior one end of filter element 2, filter core 20 is connected on unit seat 21, in filter element 2, form two chambeies by the filter core 20 on unit seat 21, between one side of filter core 20 and unit inlet 18, being filter ante-chamber Q1, is filter back cavity H1 between the opposite side of filter core 20 and unit outlet 19.
As shown in Fig. 1, Fig. 7-1, between the outlet 19 of between unit inlet 18 and outgoing interface 6 and unit and accessing port 8, closely link together by attaching parts; As shown in Figure 7, between between described unit inlet 18 and outgoing interface 6 and described unit outlet 19 and accessing port 8, stop valve 22 is all housed, between outgoing interface 6 and stop valve 22, between stop valve 22 and unit inlet 18, between accessing port 8 and stop valve 22, stop valve 22 and unit all closely link together by attaching parts between exporting 19; Between two filter elements in described filter element 2, be provided with constant voltage pipeline 26, constant voltage pipeline 26 is provided with pipeline valve 27.As shown in Figure 8, the stop valve 22 in the present invention is provided with connector 2201; As shown in Figure 7, Figure 8, between two filter elements in the filter element 2 described in the present invention, the two ends of constant voltage pipeline 26 are to be connected to two connector 2201 places on the stop valve 22 on filter element 2.
As shown in Figure 1, Figure 7 shows, be provided with air bleeding valve 28 in described body 1 upper end; As shown in Fig. 7-1, be provided with air bleeding valve 28 in described filter element 2 upper ends; As shown in Fig. 1, Fig. 7, Fig. 7-1, be being tightly connected between completing by a black box device at described moving part 17 and body 1; At described sewage collection system 12 and blowdown apparatus 10, complete being tightly connected between sewage collection system 12 and blowdown apparatus 10 by a seal assemblies; As shown in Figure 1, Figure 7 shows, the upper and lower cover of body 1, body 1 each several part connect by flange and seal, securing member lock sealing; As shown in Fig. 7-1, one end capping of upper and lower two bodies of body 1, and body 1 each several part connects by flange and seal, securing member lock sealing.As shown in Fig. 3, Fig. 3-1, elastic rubber ring 111 is housed on described sewage discharge tube 11; As shown in Fig. 4,5,6, Fig. 7, Fig. 4-1, Fig. 5-1, Fig. 6-1, Fig. 7-1, the ozzle 112 of one end with boss is housed on described sewage discharge tube 11, ozzle 112 other end covers are inserted in sewage discharge tube 11; Or ozzle 112 other end covers are inserted in sewage discharge tube 11 outsides;
As shown in Fig. 5, Fig. 7, Fig. 5-1, Fig. 7-1, be provided with spring 25 in described ozzle 112 one end, spring 25 withstands on ozzle 112 boss, and ozzle 112 is close to certain body and exports 7 places under the effect of spring 25, or is close on the anchor ring of body 1 inwall that N body export 7 places.As shown in figure 10, be the disk type filter core of described filter core 20, its structure and the specific embodiment and the Chinese patent (patent No.: 200880002878.1), content is identical.As shown in Figure 10-1, it is a disc on described disk type filter core disc post; As shown in figure 11, be the metal winding filter core of described filter core 20; As shown in figure 12, be the mesh grid formula filter core of described filter core 20.As shown in Figure 13～Figure 14, for the structural representation of interconnected a kind of attaching parts between the each unit interface in each interface and outside and between the each unit interface in outside on body of the present invention, it comprises clip 3001, clip 3001 inner sides are provided with sealing ring 3002, and clip 3001 is that two semicircular structures form by bolt 3003 docking.
As Fig. 1, Fig. 2, Fig. 7, Fig. 2-1, shown in Fig. 7-1, filter element of the present invention is in the anti-filter rinsed in body outside, can open blowoff valve 15 by manual or electric intelligent control in described anti-filter rinsed, driver 16 drives moving part 17, blowdown apparatus 10 moves, make sewage discharge tube 11 aim at respectively one by one N cavity outlet 7 in body, N filter element 2 of anti-filter rinsed carried out one by one " instead cleaning ", the conversion of the two states of " filtration ", close blowoff valve 15 by manual or electric intelligent control, stop driver 16, complete the anti-cleaning process of filter.
In the present invention, drive unit adopts routine techniques, and drive unit 16 can adopt various forms of manual or electronic speed reducer devices.The signal that intelligence control system can adopt PLC, single-chip microcomputer to receive the various electric control elements such as pressure device or position-sensing switch completes every Based Intelligent Control in the present invention.
Filter element of the present invention is as follows in the course of work of the anti-filter rinsed in body outside:
(1) filter the course of work: as shown in Figure 1, Figure 2, shown in Fig. 7, Fig. 2-1, Fig. 7-1, the medium filtering is under pipeline self pressure-acting, dielectric cavity Q before import 4 enters filter, enter again the filter ante-chamber Q1 of N filter element by N cavity outlet 7 and N the corresponding pipeline communicating of outgoing interface 6, after filter core 20 filters, enter filter back cavity H1; Medium is when by filter core 20, and as shown in figure 10, filter core 20 is disk type filter core, its filter type and the Chinese patent (patent No.: 200880002878.1), content is identical.As shown in Figure 11, Figure 12, filter core 20 is metal winding or is the form filter cores such as mesh grid formula, in medium, be greater than metal winding filter core gap or be greater than the impurity in mesh grid formula filter core aperture, be blocked in the surface of filter core, as shown in Fig. 1, Fig. 7, Fig. 2-1, Fig. 7-1, the medium that is entered filter back cavity H1 after filter element filtering in N filter element enters the rear dielectric cavity H of filter by N accessing port 8 and N the corresponding pipeline communicating of cavity import 9, enter in defeated pipeline by exporting 5 again, complete filter process.
(2) anti-cleaning process: as shown in Figure 1, Figure 2, shown in Fig. 7, Fig. 2-1, Fig. 7-1, filter work a period of time, in the time that the impurity of being held back by filter core 20 increases the circulation of obstruction medium, between import 4 and outlet 5, there is pressure differential, now open blowoff valve 15 by manual or electric intelligent control, driver 16 drives moving part 17, blowdown apparatus 10 to move, and makes sewage discharge tube 11 aim at respectively one by one N cavity outlet 7 in body; In the time that sewage discharge tube 11 is aimed at certain cavity outlet 7, block the passage that has cut off the medium that will filter in dielectric cavity Q before filter and enter by this cavity outlet 7 its corresponding filter element; Meanwhile, its corresponding filter element communicates with blowoff line 13 by cavity outlet 7, sewage discharge tube 11, blowdown apparatus 10, sewage draining exit 101, sewage collection system 12; Now, because blowoff valve 15 is opened, blowoff line 13 communicates with ambient atmosphere, blowoff line 13 is emptying state, the filter ante-chamber Q1 of filter element becomes low pressure chamber, like this, a part of pressure medium that enters dielectric cavity H after filter after filtering by other filter element is crossed the cavity import 9 that this filter unit correspondence communicates and is oppositely entered in this filter element by this, when by filter back cavity H1 in the time that filter core 20 enters filter ante-chamber Q1; As shown in figure 10, filter core 20 is disk type filter core, its anti-cleaning way and the Chinese patent (patent No.: the mode 200880002878.1) is identical.As Figure 11, shown in Figure 12, filter core 20 is metal winding filter core or is mesh grid formula filter core, be trapped in the most of impurity on filter core, by the anti-surface that departs from filter core of cleaning of MEDIA FLOW, MEDIA FLOW with anti-cleaning is passed through the unit inlet 18 of filter element 2, cavity outlet 7, sewage discharge tube 11 enters in blowdown apparatus 10, as Fig. 1, Fig. 2, Fig. 7, shown in 7-1, enter in sewage collection system 12 by the sewage draining exit 101 of blowdown apparatus 10 one end again, anti-MEDIA FLOW of cleaning is passed through the outside of blowoff line 13 discharge filter bodies 1 after entering sewage collection system 12 again, complete the anti-cleaning process of this filter element filter core, by that analogy, driver 16 drives moving part 17, blowdown apparatus 10 moves, make sewage discharge tube 11 aim at respectively one by one N cavity outlet 7 in body, complete one by one the anti-cleaning of N filter element filter core.
Sewage discharge tube is set up function and the operation principle of annex: as shown in Fig. 3, Fig. 3-1, when filter is counter while cleaning, blowdown apparatus 10 drives sewage discharge tube 11 to be attached on the anchor ring of body 1 inwall at N cavity outlet 7 places and moves as batch (-type), when mobile, due to the elastic reaction of the elastic rubber ring 111 at sewage discharge tube 11 places, reduce and even avoided blowdown apparatus 10 to drive sewage discharge tube 11 in the time of the larger interior rotation of body 1 of diameter, the catching phenomenon producing because of concentricity problem, aim at a cavity outlet 7 when sewage discharge tube 11 and stop when mobile, due to the elastic reaction of the elastic rubber ring 111 at sewage discharge tube 11 places, make the cut-out better effects if between dielectric cavity Q before the filter of body 1 and filter element carrying out anti-cleaning, anti-cleaning performance is better, as Fig. 4, Fig. 6, Fig. 4-1, shown in Fig. 6-1, when filter is counter while cleaning, blowdown apparatus 10 drives ozzle 112 batch (-type) on an anchor ring of body 1 inwall at N cavity outlet 7 places at sewage discharge tube 11 places to move, when ozzle 112 is that sewage discharge tube 11 is when aiming at a cavity outlet 7 and stopping, due to blowoff line 13, blowdown apparatus 10 is in emptying state, pressure medium in sewage discharge tube 11 and cavity outlet 7 is far below the pressure of the front dielectric cavity Q of filter, so there is certain pressure medium on the boss of ozzle 112, this pressure makes ozzle 112 stretch out at sewage discharge tube 11 places and is close to certain cavity outlet 7 place, make to filter front dielectric cavity Q and the cut-out better effects if between the filter element that carries out anti-cleaning, as shown in Fig. 5, Fig. 5-1, spring 25 withstands on the boss of ozzle 112, and ozzle 112 is close to certain cavity outlet 7 place under the effect of spring 25, or ozzle 112 is close on an anchor ring of body 1 inwall at N cavity outlet 7 places, makes the rotation of blowdown apparatus 10 more stable, make the front dielectric cavity Q of filter and the cut-out better effects if between the filter element that carries out anti-cleaning of body 1, as shown in Fig. 4, Fig. 5, Fig. 6, Fig. 4-1, Fig. 5-1, Fig. 6-1, blowdown apparatus 10 drive the ozzle 112 at sewage discharge tube 11 places on an anchor ring of body 1 inwall at N cavity outlet 7 places, carry out batch (-type) while moving because ozzle 112 has certain distance of stretch out and draw back on sewage discharge tube 11, reduce and even avoided blowdown apparatus 10 in the time of the interior rotation of large diameter body 1, the catching phenomenon between the sewage discharge tube 11 on blowdown apparatus 10 and body 1 inwall.
Maintenance process to the filter core 20 in filter element 2: filter work a period of time, viscosity, the oiliness impurity that cannot wash by its anti-cleaning function of being held back by filter core 20 increases obstruction medium and circulates; Or the parts damages on filter core or filter core, need to carry out manual cleaning or maintenance to filter core.As shown in Fig. 1, Fig. 7-1, filter is shut down, by defeated the confession in body 1 media discharge, and the attaching parts between the outlet 19 of between removable unit import 18 and outgoing interface 6 and unit and accessing port 8; As shown in Figure 7, filter is without shutdown, close between the unit inlet 18 of the filter element 2 that will overhaul filter core 20 and outgoing interface 6 and unit outlet 19 and accessing port 8 between stop valve 22, between dismounting stop valve 22 and unit inlet 18 and stop valve 22 and unit exports the attaching parts between 19; As shown in Fig. 1, Fig. 7, Fig. 7-1, Figure 13, Figure 14, attaching parts in the present invention are selected clip, unclamp bolt 3003, pull down clip 3001, sealing ring 3002, take down filter element 2, on unit seat 21, unload lower filter 20, filter core 20 is cleaned and overhauled, after maintenance finishes, filter core 20 is reinstalled on unit seat 21, then filter element 2 is reinstalled on body 1; As shown in Fig. 1, Fig. 7, Fig. 7-1, the filter core 20 in the filter element of the N on body 12 is overhauled one by one and is reinstalled on body 1, complete the maintenance of filter core 20 in the filter element of filter.As shown in Figure 7, for example, when apparatus of the present invention are filtered the pressure medium of carrying when higher (2.5MPa), filter element 2 after maintenance is reinstalled in after body 1, connect the constant voltage pipeline 26 between this filter element 2 and other filter element 2, open the pipeline valve 27 on constant voltage pipeline 26, allow the pressure medium in other filter element 2 enter in the filter element 2 being newly arranged on body 1, make the pressure balance in pressure and the body 1 in this filter element 2, just the handwheel on rotary cut-off valve 22 is opened stop valve 22 easily, complete the maintenance of filter core 20 in this filter element.As stated above the filter core 20 in the filter element of the N on body 12 is overhauled one by one and is reinstalled on body 1, complete the maintenance of whole filter element 20.As shown in Figure 7, have certain requirements for defeated flow in communication system for defeated medium and medium continuously at needs, in the time of maintenance filter core 20, body outside spare filtering cell that increase are come into operation morely.As shown in Figure 1, Figure 7 shows, the gas producing in the process of maintenance filter core 20 is external by air bleeding valve 28 displacers of body 1 upper end.As shown in Fig. 7-1, the gas producing in the process of maintenance filter core 20 is external by air bleeding valve 28 displacers of filter element 2 upper ends.As shown in Figure 7, Figure 8, in the present invention, stop valve 22 adopts the angle stop valves of innovation, rotation hand wheel, valve rod 2202 rotarily drives flap 2205 and moves and close stop valve 22 to valve seat 2203, the pressure-acting of body 1 interior medium is in the left side of flap 2205, makes between flap 2205 and valve seat 2203 sealing effectiveness better.
In filter element of the present invention, filter core can be selected and can carry out anti-various forms of monomer structure filter cores or the fabricated structure filter core cleaning; In the present invention, filter element 2 is in body 1 outside, can do single, double or many row's designs, to meet the present invention in the minimized designing requirement of various filter medium flow lower volume, when filter element is double when above, double, many rows' designs are carried out in outgoing interface 6, cavity outlet 7, accessing port 8, cavity import 9 accordingly; Sewage discharge tube 11 on blowdown apparatus 10 also carries out two sewage discharge tubes 11, the supporting design of many sewage discharge tubes 11 accordingly.Those skilled in the art can also conceive according to the present invention the embodiment of making various variations.
Because the present invention is simple in structure, reliable, easy to maintenance, the scope of application is wider, complete object of the present invention.
Claims (10)
1. filter element, in the anti-filter rinsed in body outside, is characterized in that: this filter mainly comprises body (1), a N filter element (2); Wherein, be provided with dividing plate (3) in body (1), body (1) inner chamber is divided into the front dielectric cavity (Q) of filter and the rear dielectric cavity (H) of filter by dividing plate (3); Or body (1) is divided into upper and lower two bodies, body chamber is above the front dielectric cavity (Q) of filter, and body chamber is below dielectric cavity (H) after filtering; Body (1) is provided with import (4), and import (4) communicates with dielectric cavity (Q) before filter by pipeline, and body (1) is provided with outlet (5), and outlet (5) communicates with dielectric cavity (H) after filter by pipeline; Or the body above of body (1) is provided with import (4), body is below provided with outlet (5); Body (1) outside is provided with N outgoing interface (6), before filter, in the body of dielectric cavity (Q), be provided with N cavity outlet (7), N cavity outlet (7) is by pipeline and corresponding the communicating of N outgoing interface (6), body (1) outside is provided with N accessing port (8), after filter, in the body of dielectric cavity (H), be provided with N cavity import (9), N cavity import (9) is by pipeline and corresponding the communicating of N accessing port (8); Body (1) is provided with blowdown apparatus (10), and blowdown apparatus (10) is provided with sewage discharge tube (11), and body (1) is provided with sewage collection system (12), and it is upper that blowdown apparatus (10) one end is connected to sewage collection system (12), and communicate with it; On body (1), be provided with blowoff line (13), blowoff valve (15) is housed on blowoff line (13), blowoff line (13) is connected in sewage collection system (12), and communicate with it, blowoff line (13) communicates with blowdown apparatus (10), sewage discharge tube (11) by sewage collection system (12), while opening blowoff valve (15), blowoff line (13) communicates with ambient atmosphere; Be provided with drive unit (16) in body (1) outside, between drive unit (16) and blowdown apparatus (10), be connected with moving part (17), drive unit (16) action drives moving part (17), blowdown apparatus (10) action, and sewage discharge tube (11) is aimed at respectively N cavity outlet (7) one by one; On filter element (2), be provided with unit inlet (18), on filter element (2), be provided with unit outlet (19), between between unit inlet (18) and outgoing interface (6) and unit outlet (19) and accessing port (8), closely link together by attaching parts; In filter element (2), be provided with filter core (20), in filter element (2), one end is provided with unit seat (21), filter core (20) is connected on unit seat (21), by forming two chambeies in filter core (20) filter element (2) on unit seat (21), between one side of filter core (20) and unit inlet (18), being filter ante-chamber (Q1), is filter back cavity (H1) between the opposite side of filter core (20) and unit outlet (19).
2. the anti-filter rinsed in body outside according to filter element claimed in claim 1, it is characterized in that: between between described unit inlet (18) and outgoing interface (6) and described unit outlet (19) and accessing port (8), be all provided with stop valve (22), between outgoing interface (6) and stop valve (22), between stop valve (22) and unit inlet (18), between accessing port (8) and stop valve (22), stop valve (22) and unit export between (19) and all closely link together by attaching parts.
3. the anti-filter rinsed in body outside according to the filter element described in claim 1 or 2, is characterized in that: on described sewage discharge tube (11), be provided with elastic rubber ring (111); Or, on sewage discharge tube (11), being provided with ozzle (112), one end of ozzle (112) is with boss, and one end cover of ozzle (112) is inserted in sewage discharge tube (11); Or one end cover of ozzle (112) is inserted in sewage discharge tube (11) outside.
4. the anti-filter rinsed in body outside according to filter element claimed in claim 3, it is characterized in that: be provided with spring (25) in described ozzle (112) one end, spring (25) withstands on the boss of ozzle (112), and ozzle (112) is close to certain cavity outlet (7) and locates under the effect of spring (25); Or ozzle (112) is close on an anchor ring of body (1) inwall at N cavity outlet (7) place.
5. the anti-filter rinsed in body outside according to filter element claimed in claim 1, it is characterized in that: between two filter elements in described filter element (2), be provided with constant voltage pipeline (26), constant voltage pipeline (26) is provided with pipeline valve (27).
6. the anti-filter rinsed in body outside according to the filter element described in claim 1 or 2, is characterized in that: be provided with air bleeding valve (28) in described body (1) upper end; Or, be provided with air bleeding valve (28) in described filter element (2) upper end.
7. the anti-filter rinsed in body outside according to the filter element described in claim 1 or 2, it is characterized in that: at described moving part (17) and body (1), complete being tightly connected between body (1) and moving part (17) by a black box device; At described sewage collection system (12) and blowdown apparatus (10), complete being tightly connected between sewage collection system (12) and blowdown apparatus (10) by a sealing device; The upper and lower cover of body (1) and body each several part connect by flange and securing member, seal lock sealing; Or the capping of the blind end of upper and lower two bodies of body (1) and body each several part connect by flange and securing member, seal lock sealing.
8. the anti-filter rinsed in body outside according to the filter element described in claim 1 or 2, it is characterized in that: described anti-filter rinsed is opened blowoff valve (15) by manual or electric intelligent control, driver (16) drives moving part (17), blowdown apparatus (10) action, make sewage discharge tube (11) aim at respectively one by one N the cavity outlet (7) in body, make N filter element (2) the anti-cleaning one by one of anti-filter rinsed, the conversion of the two states filtering, close blowoff valve (15) by manual or electric intelligent control, stop driver (16), complete the anti-cleaning process of filter.
9. the anti-filter rinsed in body outside according to the filter element described in claim 1 or 2, is characterized in that: filter element (2) is single, double or arranges more.
10. the anti-filter rinsed in body outside according to the filter element described in claim 1 or 2, it is characterized in that: blowdown apparatus (10) one end is provided with sewage draining exit (101), blowdown apparatus (10) is inserted in sewage collection system (12) with sewage draining exit (101) one end, and blowdown apparatus (10) communicates with sewage collection system (12) by sewage draining exit (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210052440.2A CN102921220B (en) | 2011-08-10 | 2012-03-02 | Back cleaning filter having filtration units on the outer side of device body |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120289591.0 | 2011-08-10 | ||
| CN201120289591 | 2011-08-10 | ||
| CN201210052440.2A CN102921220B (en) | 2011-08-10 | 2012-03-02 | Back cleaning filter having filtration units on the outer side of device body |
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| Publication Number | Publication Date |
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| CN102921220A CN102921220A (en) | 2013-02-13 |
| CN102921220B true CN102921220B (en) | 2014-06-25 |
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| CN201210052440.2A Active CN102921220B (en) | 2011-08-10 | 2012-03-02 | Back cleaning filter having filtration units on the outer side of device body |
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| Country | Link |
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| CN (1) | CN102921220B (en) |
| WO (2) | WO2013020334A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105126406A (en) * | 2015-10-09 | 2015-12-09 | 胡小弟 | Pipeline type filter material collection device |
| CN107551650B (en) * | 2017-05-08 | 2019-07-12 | 飞潮（无锡）过滤技术有限公司 | A kind of anti-cleaning filter implementing process |
| CN116712800B (en) * | 2023-05-31 | 2024-05-14 | 无锡学院 | Separation filter equipment based on gaseous filtration of pipeline |
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| CN101352627A (en) * | 2007-07-27 | 2009-01-28 | 王克涛 | Filter |
| CN101890262A (en) * | 2010-07-29 | 2010-11-24 | 南通航海机械集团有限公司 | Full-automatic back washing filter |
| CN101940852A (en) * | 2009-07-08 | 2011-01-12 | 王克涛 | Backwashing filter |
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| US4267039A (en) * | 1977-12-05 | 1981-05-12 | Ecodyne Corporation | Fluid filtration method and apparatus |
| JPH088965B2 (en) * | 1987-05-20 | 1996-01-31 | 石川島播磨重工業株式会社 | Automatic cleaning type concentrator |
| DE19917259A1 (en) * | 1999-04-16 | 2000-10-19 | Mahle Filtersysteme Gmbh | Filter turning in casing, has longitudinal external ridges defining segments and sealing on either side of flushing channel, to concentrate vigorous burst of back-flushing air or water from pressure vessel through one segment at a time |
| CN2582721Y (en) * | 2002-10-30 | 2003-10-29 | 湖北洪城通用机械股份有限公司 | High efficiency full automatic back flushing water filter |
| CN2759563Y (en) * | 2004-12-29 | 2006-02-22 | 浙江德安新技术发展有限公司 | On-line back flush filtering device |
| CN2799039Y (en) * | 2005-04-26 | 2006-07-26 | 魏永珊 | On-line full automatic filtering apparatus |
| CN201370993Y (en) * | 2009-03-06 | 2009-12-30 | 南通航海机械有限公司 | Automatic-cleaning water filter |
| CN201632121U (en) * | 2009-12-29 | 2010-11-17 | 天津富斯特环保设备有限公司 | Spiral-flow type back washing filtering device |
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2011
- 2011-11-14 WO PCT/CN2011/082144 patent/WO2013020334A1/en active Application Filing
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2012
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- 2012-07-11 WO PCT/CN2012/078450 patent/WO2013020438A1/en active Application Filing
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| CN101352627A (en) * | 2007-07-27 | 2009-01-28 | 王克涛 | Filter |
| CN101352628A (en) * | 2007-07-27 | 2009-01-28 | 王克涛 | Filter |
| CN101940852A (en) * | 2009-07-08 | 2011-01-12 | 王克涛 | Backwashing filter |
| CN101890262A (en) * | 2010-07-29 | 2010-11-24 | 南通航海机械集团有限公司 | Full-automatic back washing filter |
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| WO2013020334A1 (en) | 2013-02-14 |
| WO2013020438A1 (en) | 2013-02-14 |
| CN102921220A (en) | 2013-02-13 |
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Effective date of registration: 20170928 Address after: 115004, No. 153, Xinxing street, West District, Liaoning, Yingkou Patentee after: Roland fluid control (Yingkou) Co., Ltd. Address before: Xishi District of Liaoning Province, Yingkou City, No. 19, 115004 Patentee before: Wang Ketao |