CN101507888A - Double-monitor filter - Google Patents
Double-monitor filter Download PDFInfo
- Publication number
- CN101507888A CN101507888A CNA2009100642835A CN200910064283A CN101507888A CN 101507888 A CN101507888 A CN 101507888A CN A2009100642835 A CNA2009100642835 A CN A2009100642835A CN 200910064283 A CN200910064283 A CN 200910064283A CN 101507888 A CN101507888 A CN 101507888A
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- filter
- passing valve
- piston
- magnet
- housing
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Abstract
The invention discloses a double-monitoring filter, which comprises a by-pass valve (2), a filter head (3), a filter core (4) and a filter shell (5), wherein a double-monitoring circuit is adopted to monitor the operating condition of the filter during oil filtration, namely a block indicator is arranged at both ends of the filter core (4) respectively, a by-pass valve opening transmitter is arranged on the by-pass valve, and electric signals are outputted when the filter core is blocked or the by-pass valve (2) is opened. The inside of the double-monitoring filter is provided with an output control circuit, and the output control circuit generates a control circuit for a signal level indicating whether the filter is blocked and a control circuit for a signal level indicating the opening of the by-pass valve of the filter. The double-monitoring filter can output the signals when the filter core is blocked or the by-pass valve is opened and make users more clearly know about the operating condition in the filter, so that the fact that input oil is not filtered and flows into the next oil passage or the next hydraulic device through the by-pass valve due to the failure of differential pressure alarm can be prevented, and a guarantee can be made that the electric signals are outputted when the by-pass valve is opened.
Description
Technical field
The invention belongs to a kind of fluid filter, relate generally to a kind of double-monitor filter of inner band output control circuit.It produces control circuit to the signal level whether filter stops up, and filter bypass valve signal level produces control circuit.
Background technology
Filter is the important auxiliary element that is used to control oil contamination in the hydraulic system, it utilizes the slit of porous transmissibility material or filter element or utilizes non-solubility particulate pollutant in the filter type filtering fluid such as absorption, cohesion and magnetic to reach the purpose that purifies fluid, show according to the interrelated data statistics, the various faults that occur in the hydraulic system are relevant with the pollution of fluid more than 70%, so, control oil contamination in hydraulic system effectively, purify fluid, the strainability that prolongs Hydraulic Elements life-span and raising hydraulic system is had very important meaning.Filtration is present most widely used lube purification method.
The chief component of filter has housing and filter element (generally claiming filter core), the filter band by-passing valve that has and obstruction indication or signal transmitter.When filter core stopped up, clogging indicator sent signal when pressure reduction reached preset value.If in time do not take maintenance measure, pressure reduction continues to increase, and then by-passing valve is opened, and fluid is walked around filter core with bypass, in case filter core breaks.When by-passing valve was opened, fluid will not have to flow into next stage under the situation of filtering.But by-passing valve (clogging indicator does not send signal) when not reaching opening pressure is opened sometimes, and fluid will be walked around filter core, and filter has lost strainability under the unwitting situation of user.For the fluid degree of purity is required than higher hydraulic test, this is definitely unallowed.For fear of the generation of this situation, the by-passing valve that we will the controlled filter device, when by-passing valve was opened, we pointed out the user just for a signal of telecommunication.
Summary of the invention
The purpose of this invention is to provide a kind of fluid filter of two monitoring, make it have internal state, not only have the obstruction warning function, and have filter bypass opening of valves warning function user transparent.
Purpose of the present invention can adopt following technical scheme to realize: the present invention includes by-passing valve, filter, filter core and filter housing, it is at the filter core two ends obstruction signalling generator to be set, by-passing valve is set on by-passing valve opens indicator, when filter core stops up and by-passing valve all has the signal of telecommunication to export when opening.
Described obstruction signalling generator can adopt signal of telecommunication formula to stop up signalling generator, it comprises housing, spring, piston and magnet are set in housing, housing is separated into two chambers by piston, one end of spring and the end cap of housing are connected, the other end is connected with piston, magnet is arranged on the piston, be respectively arranged with two hydraulic fluid ports in the housing setting, the high pressure chest and the low-pressure cavity of two hydraulic fluid port difference connection filter elements, the hydraulic fluid port that wherein connects high pressure chest is communicated with the chamber that has magnet, connects the hydraulic fluid port of low-pressure cavity and the chamber of spring and is communicated with; Be provided with the spring that is used to control signal of telecommunication microswitch in the hull outside relative with magnet.
Described obstruction signalling generator can adopt visual type to stop up signalling generator, and it comprises housing, and enclosure interior is provided with two chambers up and down, and the indication cap is set in the housing upper chamber, in the indication cap magnet is set, and the bottom is provided with spring; In the lower housing portion chamber, be provided with piston, be provided with magnet on piston top, the bottom is provided with spring, is provided with the hydraulic fluid port that is communicated with filter core upstream high pressure chest on the top of lower housing portion chamber, is provided with the hydraulic fluid port that is communicated with filter core downstream low-pressure cavity in the bottom of lower housing portion chamber.
Described by-passing valve is opened signalling generator and is comprised that one opens the index signal circuit, opening an end of index signal circuit and the valve seat of by-passing valve is connected, the spool of the other end and by-passing valve is connected, open on the indicating circuit and be connected with indicator lamp or alarm, it is the action of when utilizing the filter oil suction chamber centrifugation of piston being controlled signalling generator.
In sum, the present invention stops up signalling generator and by-passing valve unlatching signalling generator owing to being provided with on filter, all can send signal when obstruction and by-passing valve unlatching take place filter core.Can prevent that like this because pressure reduction is reported to the police when malfunctioning, input fluid flows into next stage oil circuit or hydraulic test by bypass valve under the situation of filtered, can guarantee to have signal of telecommunication output when by-passing valve is opened.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is structure principle charts that the signal of telecommunication stops up signalling generator.
Accompanying drawing 3 is structure principle charts that visual type stops up signalling generator.
The unlatching indicator schematic diagram of accompanying drawing 4 by-passing valves
Among the figure: 1, clogging indicator, 2, by-passing valve, 3, filter, 4, filter core, 5, filter housing, 6, spring, 7, piston, 8, magnet, 9, switch, 10, red indication cap, 11, magnet, 12, spring, 13, magnet, 14, piston, 15, spring, 16, housing, 17, valve seat, 18, spool, 19, open indicator lamp, 2-1,2-2, hydraulic fluid port, 3-1,3-2, hydraulic fluid port.
The specific embodiment
In conjunction with the accompanying drawings, specific embodiments of the invention are described.
As shown in Figure 1: the present invention the present invention includes by-passing valve 2, filter 3, filter core 4 and filter housing 5, it is at filter core 4 two ends clogging indicator to be set, by-passing valve is set on by-passing valve opens signalling generator, when filter core stops up and by-passing valve 2 all has the signal of telecommunication to export when opening.
Under the normal condition (when filter does not stop up), fluid enters filter housings from the filter left end, this moment the by-passing valve closure, fluid filters the back through filter core 4 and flows out from the outlet (right-hand member) of filter, when filter stopped up, the fluid of inflow filter can't pass through from filter core 4, and filter cavity internal pressure increases, when pressure increased to the alarm pressure value of clogging indicator setting, clogging indicator sent signal.Oil liquid pressure in the filter cavity continues to increase, and when pressure increased to the opening pressure of by-passing valve setting, by-passing valve was opened, and this moment, fluid flow through filter under the situation that the filtered core filters, and the filter of this moment does not have filtering function fully.
The clogging indicator of using in accompanying drawing 1 has visual type to stop up signalling generator and the signal of telecommunication stops up two kinds of signalling generators.
As shown in Figure 2, described obstruction signalling generator is that the signal of telecommunication stops up signalling generator: it comprises housing, spring 6 is set in housing, piston 7 and magnet 3, the housing inner chamber is separated into two chambers by piston, one end of spring 6 and the end cap of housing are connected, the other end is connected with piston 7, magnet 8 is arranged on the piston, be respectively arranged with two hydraulic fluid port 2-1 in the housing setting, 2-2, the high pressure chest of hydraulic fluid port 2-1 connection filter element, the low-pressure cavity of hydraulic fluid port 2-2 connection filter element, the hydraulic fluid port 2-1 that wherein connects high pressure chest is communicated with the chamber that has magnet, connects the hydraulic fluid port 2-2 of low-pressure cavity and the chamber of spring and is communicated with; Be provided with the spring that is used to control signal of telecommunication microswitch 9 in the hull outside relative with magnet.Under normal circumstances, magnet 8 and piston 7 are in location right under the effect of spring 8.When the pressure reduction of filter core increases to alarm setting value, push piston and magnet to left end, switch 9 moves and sends signal under the effect of spring.By action drives one microswitch of a mechanical type visualizer, to send the signal of telecommunication.It can connect light or the warning of sound device by electric switch, or the electric control loop of cut-out hydraulic system quits work system.
Stop up signalling generator for visual type as shown in Figure 3: it comprises housing, and enclosure interior is provided with two chambers up and down, and indication cap 10 is set in the housing upper chamber, in the indication cap 10 magnet 11 is set, and the bottom is provided with spring 12; In the lower housing portion chamber, be provided with piston 14, piston is provided with magnet 13, the bottom is provided with spring 15, is provided with the hydraulic fluid port 3-1 that is communicated with filter core upstream high pressure chest on the top of lower housing portion chamber, is provided with the hydraulic fluid port 3-2 that is communicated with filter core downstream low-pressure cavity in the bottom of lower housing portion chamber.Under normal circumstances, magnet 13 and piston 14 are in upper position under the effect of spring 15, and indication cap 10 and magnet 11 are in lower position under the suction of magnet 13.Increase with piston 14 two ends pressure reduction, the hydraulic coupling promotion piston 14 UNICOM's magnet 13 that act on the piston 14 move down.Indicate this moment cap 10 under spring 12 effects, to pop up, demonstrate red index signal.
Operation principle of the present invention is as follows: be provided with two kinds of signal output monitoring circuit in the inside of filter, be filter core and stop up indicating circuit and by-passing valve unlatching indicating circuit.Under the normal condition (when filter does not stop up), fluid enters filter housings from the filter left end, and this moment, by-passing valve was not opened, and fluid flows out from the outlet (right-hand member) of filter after folding the tubular filter element filtering, and this moment, filter was working properly.When the filter core of filter stopped up, the pressure between oil inlet and outlet constantly increased, and when this force value increased to the force value of setting, clogging indicator 1 sent signal.We can judge whether filter stops up by the output of monitoring this signal.Even if do not take measures this moment, filter cavity internal pressure continues to increase, and when pressure increased to the opening pressure value of by-passing valve, by-passing valve was opened indicator and sent signal.We can judge whether by-passing valve is opened by the output of monitoring this signal.When by-passing valve was opened, fluid flow through filter under the situation that the filtered core filters, and the filter of this moment does not have filtering function fully.For the fluid degree of purity is required than higher hydraulic test, this is unallowed.By-passing valve is installed is opened the generation that indicating circuit can be avoided this situation.
Claims (4)
1, a kind of double-monitor filter, comprise by-passing valve (2), filter (3), filter core (4) and filter housing (5), it is characterized in that: in the fluid filter process, adopt two supervisory circuits that the working condition of filter is monitored, promptly clogging indicator is set at filter core (4) two ends, by-passing valve is set on by-passing valve opens signalling generator, when filter core stops up and by-passing valve (2) all has the signal of telecommunication to export when opening.
2, double-monitor filter according to claim 1, it is characterized in that: described clogging indicator is that the signal of telecommunication stops up signalling generator, it comprises housing, spring (6) is set in housing, piston (7) and magnet (3), the housing inner chamber is separated into two chambers by piston, one end of spring (6) and the end cap of housing are connected, the other end is connected with piston (7), magnet (8) is arranged on the piston, be respectively arranged with two hydraulic fluid ports in the housing setting, two hydraulic fluid ports are the high pressure chest and the low-pressure cavity of connection filter elements respectively, and the chamber that wherein connects the hydraulic fluid port (2-1) of high pressure chest and have magnet (8) is communicated with, and connects the chamber connection of the hydraulic fluid port (2-2) and the spring (7) of low-pressure cavity; Be provided with the spring that is used to control signal of telecommunication microswitch (9) in the hull outside relative with magnet.
3, double-monitor filter according to claim 1, it is characterized in that: described clogging indicator is that visual type stops up signalling generator: it comprises housing, enclosure interior is provided with two chambers up and down, indication cap (10) is set in the housing upper chamber, in the indication cap (10) magnet (11) is set, the bottom is provided with spring (12); In the lower housing portion chamber, be provided with piston (14), piston is provided with magnet (13), the bottom is provided with spring (15), be provided with the hydraulic fluid port (3-1) that is communicated with filter core upstream high pressure chest on the top of lower housing portion chamber, be provided with the hydraulic fluid port (3-2) that is communicated with filter core downstream low-pressure cavity in the bottom of lower housing portion chamber.
4, double-monitor filter according to claim 1, it is characterized in that: described by-passing valve is opened signalling generator and is comprised that one opens the index signal circuit, opening an end of index signal circuit and the valve seat (17) of by-passing valve is connected, the spool of the other end and by-passing valve (18) is connected, open on the indicating circuit and be connected with indicator lamp or alarm, during the by-passing valve closure or openness, signalling generator is a signal of telecommunication signal transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100642835A CN101507888A (en) | 2009-02-27 | 2009-02-27 | Double-monitor filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100642835A CN101507888A (en) | 2009-02-27 | 2009-02-27 | Double-monitor filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101507888A true CN101507888A (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100642835A Pending CN101507888A (en) | 2009-02-27 | 2009-02-27 | Double-monitor filter |
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| CN (1) | CN101507888A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101961571A (en) * | 2010-09-21 | 2011-02-02 | 浙江沁园水处理科技有限公司 | Filtering device with automatic detection structure |
| CN102665849A (en) * | 2009-08-24 | 2012-09-12 | 马勒国际有限公司 | Filter device |
| CN102721204A (en) * | 2012-06-21 | 2012-10-10 | 北京电影机械研究所 | Hydraulic driving device and driving method used for trench type heat collecting system |
| CN103476476A (en) * | 2011-02-18 | 2013-12-25 | 亨格斯特两合公司 | Bypass valve, device comprising bypass valve, and filter insert of the device |
| CN104763708A (en) * | 2015-04-03 | 2015-07-08 | 山东省聊城市中矿机械有限公司 | Pollution indicator |
| CN105508579A (en) * | 2015-12-09 | 2016-04-20 | 陕西法士特齿轮有限责任公司 | Transmission cooling and filtering system and filter mounting seat thereof |
| CN105854396A (en) * | 2016-04-06 | 2016-08-17 | 安徽康成工业产品设计有限公司 | Cleaning, maintaining and prompting assembly of fine oil filter of tube machine |
| CN107642520A (en) * | 2017-10-20 | 2018-01-30 | 新乡市华航航空液压设备有限公司 | A kind of synchronous alarm bypass group indicater structure |
| CN109253957A (en) * | 2018-09-18 | 2019-01-22 | 朱明箴 | oil filter detection system |
| CN109806660A (en) * | 2019-02-22 | 2019-05-28 | 韩新月 | A kind of cooling liquid filtering apparatus |
| CN111163853A (en) * | 2017-09-20 | 2020-05-15 | 尼亚布科知识产权控股有限责任公司 | Disposable filter including integrated sensor assembly |
| CN112156526A (en) * | 2020-08-24 | 2021-01-01 | 九江七所精密机电科技有限公司 | Double-precision filter with double signaling |
-
2009
- 2009-02-27 CN CNA2009100642835A patent/CN101507888A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102665849A (en) * | 2009-08-24 | 2012-09-12 | 马勒国际有限公司 | Filter device |
| CN102665849B (en) * | 2009-08-24 | 2015-01-14 | 马勒国际有限公司 | Filter device |
| US8956531B2 (en) | 2009-08-24 | 2015-02-17 | Mahle International Gmbh | Filter device |
| CN101961571A (en) * | 2010-09-21 | 2011-02-02 | 浙江沁园水处理科技有限公司 | Filtering device with automatic detection structure |
| CN101961571B (en) * | 2010-09-21 | 2012-07-25 | 浙江沁园水处理科技有限公司 | Filtering device with automatic detection structure |
| CN103476476A (en) * | 2011-02-18 | 2013-12-25 | 亨格斯特两合公司 | Bypass valve, device comprising bypass valve, and filter insert of the device |
| CN102721204A (en) * | 2012-06-21 | 2012-10-10 | 北京电影机械研究所 | Hydraulic driving device and driving method used for trench type heat collecting system |
| CN104763708A (en) * | 2015-04-03 | 2015-07-08 | 山东省聊城市中矿机械有限公司 | Pollution indicator |
| CN105508579A (en) * | 2015-12-09 | 2016-04-20 | 陕西法士特齿轮有限责任公司 | Transmission cooling and filtering system and filter mounting seat thereof |
| CN105854396A (en) * | 2016-04-06 | 2016-08-17 | 安徽康成工业产品设计有限公司 | Cleaning, maintaining and prompting assembly of fine oil filter of tube machine |
| CN111163853A (en) * | 2017-09-20 | 2020-05-15 | 尼亚布科知识产权控股有限责任公司 | Disposable filter including integrated sensor assembly |
| CN111182957A (en) * | 2017-09-20 | 2020-05-19 | 尼亚布科知识产权控股有限责任公司 | Disposable filter with accessory port |
| CN107642520A (en) * | 2017-10-20 | 2018-01-30 | 新乡市华航航空液压设备有限公司 | A kind of synchronous alarm bypass group indicater structure |
| CN109253957A (en) * | 2018-09-18 | 2019-01-22 | 朱明箴 | oil filter detection system |
| CN109806660A (en) * | 2019-02-22 | 2019-05-28 | 韩新月 | A kind of cooling liquid filtering apparatus |
| CN109806660B (en) * | 2019-02-22 | 2023-12-29 | 西安瀚海天行科技有限公司 | Cooling liquid filtering device |
| CN112156526A (en) * | 2020-08-24 | 2021-01-01 | 九江七所精密机电科技有限公司 | Double-precision filter with double signaling |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Open date: 20090819 |