CN101816847A - Back washing filter - Google Patents
Back washing filter Download PDFInfo
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- CN101816847A CN101816847A CN 201010168810 CN201010168810A CN101816847A CN 101816847 A CN101816847 A CN 101816847A CN 201010168810 CN201010168810 CN 201010168810 CN 201010168810 A CN201010168810 A CN 201010168810A CN 101816847 A CN101816847 A CN 101816847A
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- valve
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- feed liquor
- blowdown
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Abstract
本发明公开了一种反冲洗过滤器，包括阀体，阀体上开有进液口、出液口、排污口，阀体内设有多个阀芯组件、多个滤芯组件，阀芯组件与滤芯组件之间设有连通通道，阀芯组件包括背靠背设置的进液阀芯和排污阀芯，进液阀芯与排污阀芯之间设有小弹簧，排污阀芯的后端设有顶杆；还包括先导滤芯、单向阀、先导阀，出液口依次通过所述先导滤芯、单向阀、先导阀后与顶杆后端的液腔相通，用于控制正常工作位与反冲洗位之间的切换。使用方便，并能有效延长滤芯的使用寿命。
The invention discloses a backwashing filter, which comprises a valve body which is provided with a liquid inlet, a liquid outlet and a sewage discharge port. The valve body is provided with a plurality of valve core assemblies and a plurality of filter element assemblies. The valve core assembly and There is a communication channel between the filter element components. The valve core assembly includes a liquid inlet valve core and a sewage valve core set back to back. A small spring is provided between the liquid intake valve core and the sewage valve core. ; It also includes a pilot filter element, a one-way valve, and a pilot valve. After the liquid outlet passes through the pilot filter element, one-way valve, and pilot valve in sequence, it communicates with the liquid chamber at the rear end of the ejector rod, and is used to control the distance between the normal working position and the backwashing position. switch between. It is easy to use and can effectively prolong the service life of the filter element.
Description
Technical field
The present invention relates to a kind of filter, relate in particular to a kind of backwash filter.
Background technology
Continuous popularization along with support electricity hydraulic control system needs filter core to possess function of on-line cleaning.
Backwash filter of the prior art adopts the backwash filter of manual backwash filter or employing bi-bit bi-pass changement.
Above-mentioned prior art comprises following shortcoming at least:
Adopt manual backwash filter need manually pull the backwash handle and carry out backwash, it has increased labor's labour intensity greatly; Because the system pressure fluctuation, when inlet pressure reduced, the liquid outlet fluid pressure was than the inlet height, and high pressure liquid flows out to the outside from the filter core the inside, can produce filter core bulge phenomenon, greatly reduces the service life of filter core.
Summary of the invention
The purpose of this invention is to provide a kind of easy to usely, and can effectively protect the backwash filter in the service life of filter core.
The objective of the invention is to be achieved through the following technical solutions:
Backwash filter of the present invention, comprise valve body, have inlet, liquid outlet, sewage draining exit on the described valve body, be provided with a plurality of core assemblies, a plurality of element kit in the described valve body, be provided with communication passage between core assembly and the element kit, described core assembly comprises feed liquor spool and the blowdown spool that is provided with back-to-back, is provided with little spring between described feed liquor spool and the blowdown spool, and the rear end of described blowdown spool is provided with push rod; Also comprise guide's filter core, check valve, pilot valve, described liquid outlet is successively by communicating with the sap cavity of described push rod rear end behind described guide's filter core, check valve, the pilot valve.
As seen from the above technical solution provided by the invention, backwash filter of the present invention, owing to be provided with a plurality of core assemblies, a plurality of element kit in the valve body, be provided with communication passage between core assembly and the element kit, core assembly comprises feed liquor spool and the blowdown spool that is provided with back-to-back, be provided with little spring between feed liquor spool and the blowdown spool, the rear end of blowdown spool is provided with push rod; Also comprise guide's filter core, check valve, pilot valve, liquid outlet is successively by communicating with the sap cavity of push rod rear end behind described guide's filter core, check valve, the pilot valve.By the liquid after the element kit filtration, behind guide's filter element filtering, give the pilot valve feed flow by check valve, can ensure to the cleannes of the liquid of pilot valve feed flow, reduce the spoilage of pilot valve, system pressure sharply descends when the backwash filter backwash simultaneously, and the liquid that check valve can ensure to the pilot valve feed flow separates with system liquid, with the reliable commutation of assurance pilot valve and the normal operation of backwashing function.Easy to use, and can effectively protect service life of filter core.
Description of drawings
Fig. 1 is the cross-sectional view of backwash filter of the present invention;
Fig. 2 is the Facad structure schematic diagram of backwash filter of the present invention;
Fig. 3 is the systematic schematic diagram of backwash filter of the present invention.
Among the figure: the 1-valve body; The 2-element kit; The 3-check valve; 4-guide's filter core; 5-feed liquor valve seat; 6-feed liquor spool; The 7-little spring; 8-blowdown spool; 9-crosses the liquid cover; The 10-big spring; The 11-push rod; The 12-swivel nut; The 13-pilot valve; The 14-fluid proportion plate; The 15-rebound; The 16-core assembly; The A-inlet; The B-liquid outlet; C-feed liquor intercommunicating pore; D-fluid intercommunicating pore; The E-sewage draining exit; The communication passage of F-core assembly and element kit; The G-intercommunicating pore; 17-operate as normal position; 18-backwash working position.
The specific embodiment
Backwash filter of the present invention, the specific embodiment that it is preferable such as Fig. 1, Fig. 2, shown in Figure 3:
Specifically can in valve body 1, be provided with two core assemblies 16, two 2, two core assembly 16 correspondences of element kit are provided with two inlet A, two element kit 2 correspondences are provided with two liquid outlet B, two inlet A are interconnected, two liquid outlet B are interconnected.
Described core assembly 16 comprises feed liquor spool 6 and the blowdown spool 8 that is provided with back-to-back, is provided with little spring 7 between described feed liquor spool 6 and the blowdown spool 8, and the rear end of described blowdown spool 8 is provided with push rod 11;
Also comprise guide's filter core 4, check valve 3, pilot valve 13 etc., described liquid outlet B communicates with the sap cavity of described push rod 11 rear ends by described guide's filter core 4, check valve 3, pilot valve 13 backs successively, is used to control the switching between operate as normal position and the backwash position.
Feed liquor spool 6 constitutes the feed liquor sealing pairs with feed liquor valve seat 5, described blowdown spool 8 with cross liquid cover 9 and constitute the blowdown sealing pairs, described blowdown sealing pair is the sealing pair of hard sealing structure.
Described blowdown spool 8 is a fairlead with the inwall of described feed liquor spool 6.
Backwash filter of the present invention, have guide's filter core and check valve, by the liquid after the element kit filtration, behind guide's filter element filtering, give the pilot valve feed flow by check valve, can ensure to the cleannes of the liquid of pilot valve feed flow, reduce the spoilage of pilot valve, system pressure sharply descends when the backwash filter backwash simultaneously, but can guarantee owing to have check valve, separate for the liquid of pilot valve feed flow with system liquid, with the reliable commutation of assurance pilot valve and the normal operation of backwashing function.Can avoid simultaneously producing filter core bulge phenomenon, the service life of improving element kit greatly because pressure oscillation causes the phenomenon that high pressure liquid flows out to the outside from the filter core the inside.The service life that blowdown spool and mistake liquid cover adopt hard sealing structure can improve its backwash filter greatly.
Below by concrete enforcement embodiment, the present invention is described in detail:
Again referring to Fig. 1, Fig. 2, Fig. 3, have inlet A, liquid outlet B, sewage draining exit E on the valve body 1, at least two element kits 2, two core assemblies 16, check valve 3 and guide's filter cores 4 are housed on the valve body 1, rebound 15 links to each other with valve body 1 by screw, fluid proportion plate 14 is fixed on the rebound 15 by screw, and pilot valve 13 is fixed on the fluid proportion plate 14 by screw.
Described core assembly 16 comprises feed liquor valve seat 5, feed liquor spool 6, little spring 7, blowdown spool 8, liquid cover 9, big spring 10, push rod 11 and swivel nut 12 orders are installed excessively, described blowdown spool 8 with cross liquid cover 9 and constitute the hard sealing structure sealing pairs, feed liquor spool 6 constitutes the feed liquor sealing pairs with feed liquor valve seat 5.Described blowdown spool 8 serves as that compression little spring 7 is arranged between guiding and feed liquor spool 6 and the blowdown spool 8 with the inwall of feed liquor spool 6.
Described core assembly 16, when inlet A does not have high pressure liquid or inlet A high pressure liquid and is lower than the communication passage F place high pressure liquid pressure of core assembly and element kit, the feed liquor spool 6 of core assembly 16 and blowdown spool 8 are under the pretightning force effect of little spring, and feed liquor spool 6 and feed liquor valve seat 5 formation sealing pairs are in closed condition, blowdown spool 8 and cross liquid cover 9 formation sealing pairs and also are in closed condition.
Backwash filter operation principle of the present invention is described below, as shown in Figure 3:
(1) the operate as normal position 17:
When this working position, when not having high pressure liquid or inlet A high pressure liquid at inlet A and be lower than the communication passage F place high pressure liquid pressure of core assembly and element kit, this moment, feed liquor spool 6 all was in closed condition with blowdown spool 8; When the pressure of inlet A was higher than the communication passage F place high pressure liquid pressure of core assembly and element kit, feed liquor spool 5 was opened, and high pressure liquid is filtered the back from liquid outlet B outflow through core assembly 16, communication passage F and element kit 2, finishes the filtration to high pressure liquid;
(2) the backwash working position 18:
When this working position, core assembly 16 is in backwash state working position, cleans one of them element kit 2, such as cleaning the left side filter core.High pressure liquid part after element kit 2 filters is through guide's filter core 4, pilot valve 13 feed flows are given in check valve 3 backs, control pilot valve 13 makes wherein function mouth action, make high pressure liquid through guide's filter core 4, check valve 3, behind the pilot valve 13, enter into the sap cavity of push rod 11 rear ends, push rod 11 is opened blowdown spool 8, thereby control left hand valve core assembly 16 commutates to the backwash working position, the feed liquor spool 6 of this core assembly 16 is closed, blowdown spool 8 is opened with sewage draining exit E and is communicated, because two liquid outlet B are communicated with by fluid intercommunicating pore D, high pressure liquid part after right hand valve core assembly 16 and element kit 2 normal filtration flows into the outside outflow of the inside of left side element kit 2 by left side element kit 2 through fluid intercommunicating pore D, the dirt of the outer surface of left side element kit 2 outside sewage draining exit E discharges automatically controlled backwash filter, is finished a cleaning process of left side element kit 16.In like manner can finish cleaning to other element kits 16 by other function mouths of control pilot valve 13.
Backwash filter of the present invention has guide's filter core 4 and check valve 3, by the liquid after element kit 16 filtrations, after 4 filtrations of guide's filter core, give pilot valve 13 feed flows by check valve 3, can ensure to the cleannes of the liquid of pilot valve 13 feed flows, reduce the spoilage of pilot valve 13, system pressure sharply descends when the backwash filter backwash simultaneously, but can guarantee owing to have check valve 3, separate for the liquid of pilot valve 13 feed flows with system liquid, with the reliable commutation of assurance pilot valve 13 and the normal operation of backwashing function.
Among the present invention, have the guide's filter core to the independent feed flow of pilot valve, can realize classified filtering, promptly the element kit precision is not subjected to the requirement of pilot valve to the working media cleannes.(as: when the pilot valve filtering accuracy need be higher than 40um, as long as guide's filter filtering accuracy is when being higher than 40um, and main Filter Precision can be lower than 40um); Have one-way valve, can guarantee the reliable commutation of spool; Can solve after filter core stops up, existing filter occurs because the system pressure fluctuation, when inlet pressure reduces, produce the liquid outlet fluid pressure than the inlet height, when high pressure liquid flows out to the outside from the filter core the inside, produce the shortcoming of filter core bulge phenomenon, the service life of having improved backwash filter and backwash filter core greatly; The present invention can realize backwashing function by the control pilot valve, greatly reduces labor's labour intensity.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (6)
1. backwash filter, comprise valve body, have inlet, liquid outlet, sewage draining exit on the described valve body, it is characterized in that, be provided with a plurality of core assemblies, a plurality of element kit in the described valve body, be provided with communication passage between core assembly and the element kit, described core assembly comprises feed liquor spool and the blowdown spool that is provided with back-to-back, be provided with little spring between described feed liquor spool and the blowdown spool, the rear end of described blowdown spool is provided with push rod.
2. backwash filter according to claim 1 is characterized in that, also comprises guide's filter core, check valve, pilot valve, and described liquid outlet is successively by communicating with the sap cavity of described push rod rear end behind described guide's filter core, check valve, the pilot valve.
3. backwash filter according to claim 2 is characterized in that, described blowdown spool is a fairlead with the inwall of described feed liquor spool.
4. backwash filter according to claim 3 is characterized in that, described feed liquor spool and feed liquor valve seat constitute the feed liquor sealing pair, described blowdown spool with cross the liquid cover and constitute the blowdown sealing pair, described blowdown sealing pair is the sealing pair of hard sealing structure.
5. backwash filter according to claim 4, it is characterized in that, be provided with two core assemblies, two element kits in the described valve body, two core assembly correspondences are provided with two inlets, two element kit correspondences are provided with two liquid outlets, two inlets are interconnected, and two liquid outlets are interconnected.
6. backwash filter according to claim 5 is characterized in that, described pilot valve is fixed on the top of described valve body by rebound, and communicates with the liquid road of described valve inner by fluid proportion plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010168810XA CN101816847B (en) | 2010-05-05 | 2010-05-05 | backwash filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010168810XA CN101816847B (en) | 2010-05-05 | 2010-05-05 | backwash filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101816847A true CN101816847A (en) | 2010-09-01 |
| CN101816847B CN101816847B (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010168810XA Active CN101816847B (en) | 2010-05-05 | 2010-05-05 | backwash filter |
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| CN (1) | CN101816847B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979123A (en) * | 2010-10-09 | 2011-02-23 | 深圳市森科妍科技有限公司 | Control system for high-precision liquid filter |
| CN102913263A (en) * | 2012-11-01 | 2013-02-06 | 中煤北京煤矿机械有限责任公司 | Self-filtering sliding valve type high-pressure pilot stop valve |
| CN104028021A (en) * | 2014-06-30 | 2014-09-10 | 山西平阳广日机电有限公司 | Manual back-flushing filter |
| CN104989304A (en) * | 2015-08-06 | 2015-10-21 | 凡尔机械集团有限公司 | Backwashing filter valve assembly |
| CN105065730A (en) * | 2015-08-06 | 2015-11-18 | 凡尔机械集团有限公司 | Valve element assembly |
| CN109395449A (en) * | 2018-12-13 | 2019-03-01 | 丰隆高科液压股份有限公司 | A kind of air water two-way hydraulic control back-flushing filter |
Citations (6)
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| US4836925A (en) * | 1988-05-16 | 1989-06-06 | Joachim Wolf | Device for a filter device |
| WO2001058564A1 (en) * | 2000-02-14 | 2001-08-16 | Milow Ltd. | Filter-cleaning device and method, and fluid pulse generator particularly useful therein |
| CN101269281A (en) * | 2008-04-17 | 2008-09-24 | 北京天地玛珂电液控制系统有限公司 | Backwash high pressure filter station |
| CN101629589A (en) * | 2009-06-01 | 2010-01-20 | 北京天地玛珂电液控制系统有限公司 | Integral plugged electric-hydraulic control reversing valve with classified filtering function |
| CN101664613A (en) * | 2009-09-09 | 2010-03-10 | 无锡市创恒机械有限公司 | Emulsion high-pressure automatic back-flushing filtering device |
| CN201692716U (en) * | 2010-05-05 | 2011-01-05 | 北京天地玛珂电液控制系统有限公司 | Backwashing filter |
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2010
- 2010-05-05 CN CN201010168810XA patent/CN101816847B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4836925A (en) * | 1988-05-16 | 1989-06-06 | Joachim Wolf | Device for a filter device |
| WO2001058564A1 (en) * | 2000-02-14 | 2001-08-16 | Milow Ltd. | Filter-cleaning device and method, and fluid pulse generator particularly useful therein |
| CN101269281A (en) * | 2008-04-17 | 2008-09-24 | 北京天地玛珂电液控制系统有限公司 | Backwash high pressure filter station |
| CN101629589A (en) * | 2009-06-01 | 2010-01-20 | 北京天地玛珂电液控制系统有限公司 | Integral plugged electric-hydraulic control reversing valve with classified filtering function |
| CN101664613A (en) * | 2009-09-09 | 2010-03-10 | 无锡市创恒机械有限公司 | Emulsion high-pressure automatic back-flushing filtering device |
| CN201692716U (en) * | 2010-05-05 | 2011-01-05 | 北京天地玛珂电液控制系统有限公司 | Backwashing filter |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979123A (en) * | 2010-10-09 | 2011-02-23 | 深圳市森科妍科技有限公司 | Control system for high-precision liquid filter |
| CN101979123B (en) * | 2010-10-09 | 2012-11-14 | 深圳市森科妍科技有限公司 | Control system for high-precision liquid filter |
| CN102913263A (en) * | 2012-11-01 | 2013-02-06 | 中煤北京煤矿机械有限责任公司 | Self-filtering sliding valve type high-pressure pilot stop valve |
| CN104028021A (en) * | 2014-06-30 | 2014-09-10 | 山西平阳广日机电有限公司 | Manual back-flushing filter |
| CN104028021B (en) * | 2014-06-30 | 2016-08-31 | 山西平阳广日机电有限公司 | Manual backwashing filter device |
| CN104989304A (en) * | 2015-08-06 | 2015-10-21 | 凡尔机械集团有限公司 | Backwashing filter valve assembly |
| CN105065730A (en) * | 2015-08-06 | 2015-11-18 | 凡尔机械集团有限公司 | Valve element assembly |
| CN109395449A (en) * | 2018-12-13 | 2019-03-01 | 丰隆高科液压股份有限公司 | A kind of air water two-way hydraulic control back-flushing filter |
| CN109395449B (en) * | 2018-12-13 | 2024-01-23 | 丰隆高科液压股份有限公司 | Gas-water double-path liquid control backflushing filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101816847B (en) | 2012-02-29 |
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Address after: 100013, room 5, Tiandi building, 102 Youth Road, Chaoyang District, Beijing, Hepingli Patentee after: CCTEG Beijing Tianma Intelligent Control Technology Co.,Ltd. Address before: 100013, room 5, Tiandi building, 102 Youth Road, Chaoyang District, Beijing, Hepingli Patentee before: BEIJING TIANDI-MARCO ELECTRO-HYDRAULIC CONTROL SYSTEM Co.,Ltd. |