CN101979123B - Control system for high-precision liquid filter - Google Patents
Control system for high-precision liquid filter Download PDFInfo
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- CN101979123B CN101979123B CN2010105009305A CN201010500930A CN101979123B CN 101979123 B CN101979123 B CN 101979123B CN 2010105009305 A CN2010105009305 A CN 2010105009305A CN 201010500930 A CN201010500930 A CN 201010500930A CN 101979123 B CN101979123 B CN 101979123B
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- spring
- filter
- filter core
- sensor
- backwash
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Abstract
The invention discloses a control system for a high-precision liquid filter. The control system comprises a filter element connecting rod fixedly connected with a filter element, a spring, an upper sensor, a lower sensor, a contact and a control device for controlling the filter to start and turn off backwashing, wherein the filter element connecting rod is fixedly connected with the middle part of the spring; the upper sensor is positioned above the spring and the lower sensor is positioned below the spring; the filter element connecting rod is fixedly connected with the contact; and the upper deformation of the spring drives the contact to contact the upper sensor to trigger the control device to start the backwashing, and the lower deformation of the spring drives the contact to contact the lower sensor to trigger the control device to turn off the backwashing. The control system for the high-precision liquid filter has the advantages that: on the premise that the pressure of the filter element is in direct proportion to the deformation of the spring, the blockage of the filter element is accurately monitored, and the backwashing is started when the filter element is blocked and needs the backwashing, so that the consumption of filtered liquid during the backwashing is effectively reduced and the capacity of the filter is improved.
Description
Technical field
The present invention relates to the secondary filter field, relate in particular to a kind of control system of high-precision liquid filter.
Background technology
The backwash control system intelligent situation on the low side that has filter at present in the filtration art of liquid.Because filter will carry out backwash after using, be the liquid after filtering and use the liquid of backwash, cause the filter liquide use amount of backwash bigger than normal, cause the production capacity of filter liquide on the low side.
Mainly there is following defective at present:
1, in the occasion of using multiple filter; When carrying out backwash, lack and judge the control that starts which filter backwash; And carrying out the high-precision liquid after backwash need be used filtration, each filter core all needs to clean when carrying out backwash thus, has used a large amount of high-precision liquids.
2, when carrying out backwash, what filter used now is the time control mode, and this control model can't be judged developing result.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of control system of high-precision liquid filter, and this system can improve the production capacity of filter and reduce the expenditure of liquid when backwash after filtering.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: the control system that a kind of high-precision liquid filter is provided; Comprise being used for fixing filter core connecting rod, spring, upper sensor, lower sensor, contact, backwash starting switch, the backwash stopcock that connects filter core and being used for the controlled filter device and start backwash and turn-off the control device of backwash; Said filter core connecting rod is fixedly connected with the middle part of said spring, and said upper sensor is positioned at the top of spring, and said lower sensor is positioned at the below of spring; Said filter core connecting rod is fixedly connected said contact; The last deformation band movable contact of said spring contacts with upper sensor, and the descending change of said spring drives the contact and contacts with lower sensor, and said upper sensor is connected with control device respectively with lower sensor.
Wherein, said upper sensor is a upper stroke switch.
Wherein, said upper stroke switch is two, divides the both sides that stand in said spring top.
Wherein, said lower sensor is a lower stroke switch.
Wherein, said lower stroke switch is two, divides the both sides that stand in said spring below.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of high-precision liquid filtration system is provided, and said filtration system comprises high-precision liquid filter and high-precision liquid filter control system; Said high-precision liquid filter control system comprises being used for fixing filter core connecting rod, spring, upper sensor, lower sensor, contact, backwash starting switch, the backwash stopcock that connects filter core and being used for the controlled filter device and starts backwash and turn-off the control device of backwash; Said filter core connecting rod is fixedly connected with the middle part of said spring; Said upper sensor is positioned at the top of spring; Said lower sensor is positioned at the below of spring; Said filter core connecting rod is fixedly connected said contact; The last deformation band movable contact of said spring contacts with upper sensor, and the descending change of said spring drives the contact and contacts with lower sensor, and said upper sensor is connected with control device respectively with lower sensor.
Wherein, said upper sensor is a upper stroke switch.
Wherein, said upper stroke switch is two, divides the both sides that stand in said spring top.
Wherein, said lower sensor is a lower stroke switch.
Wherein, said lower stroke switch is two, divides the both sides that stand in said spring below.
The invention has the beneficial effects as follows: the excessive defective of filtration back liquid expenditure is used in the timing controlled backwash that is different from prior art; The present invention is under the proportional prerequisite of the deformation of the pressure of filter core and spring; Accurately the filter core stopping state is monitored; When the filter core obstruction must be carried out backwash, just start backwash, filter the expenditure of back liquid when effectively reducing backwash, increase the production capacity of filter.
Description of drawings
Fig. 1 is the filter structure schematic representation of the embodiment of the invention;
Fig. 2 is the filter control system schematic of the embodiment of the invention;
Fig. 3 is the schematic cross-section of quick-changing type candle filter;
Fig. 4 is the enlarged drawing of A part in the quick-changing type candle filter;
Fig. 5 is the exploded view after the quick-changing type candle filter is removed tank body;
Fig. 6 is the filter core joint stereogram of quick-changing type candle filter
Fig. 7 is the unsteady gland stereogram of quick-changing type candle filter;
Fig. 8 is the filter core joint of quick-changing type candle filter, the installation diagram of float gland and spring press-cover;
Fig. 9 is a filter core joint among Fig. 8, the sectional view of the installation diagram of float gland and spring press-cover.
The specific embodiment
By specifying technology contents of the present invention, structural feature, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
See also Fig. 1 and Fig. 2; The control system of high-precision liquid filter of the present invention; Comprise being used for fixing filter core connecting rod 11, spring 12, upper sensor 13, lower sensor 14, contact 15, backwash starting switch (not shown), the backwash stopcock (not shown) that connects filter core 10 and being used for the controlled filter device and start backwash and turn-off the control device (not shown) of backwash; Said filter core connecting rod 11 is fixedly connected with the middle part of said spring 12; Said upper sensor 13 is positioned at the top of spring 12, and said lower sensor 14 is positioned at the below of spring 12, and the end of filter core connecting rod 11 is fixedly connected said contact 15; The stroke of deformation up and down of the filter pressure of filter core 10 and spring 12 is linear; The last deformation band movable contact 15 of said spring 12 contacts with upper sensor, and the descending change of said spring 12 drives contact 15 and contacts with lower sensor, and said upper sensor 13 is connected with control device respectively with lower sensor 14; Contact 15 contacts with upper sensor 13 and produces a triggering signal, and control device receives said triggering signal, sends to start backwash and instruct the backwash starting switch; Contact 15 contacts with lower sensor 14 and produces a triggering signal, and control device receives said triggering signal, sends to turn-off backwash and instruct the backwash stopcock.
The excessive defective of filtration back liquid expenditure is used in the timing controlled backwash that is different from prior art; The present invention is under the proportional prerequisite of the deformation of the pressure of filter core and spring; Accurately the filter core stopping state is monitored; When the filter core obstruction must be carried out backwash, just start backwash, filter the expenditure of back liquid when having effectively reduced backwash, increased the production capacity of filter.
Principle of the present invention is that the connecting rod of filter core pressure inside through inside passed on the spring, according to the pressure feedback filter core pressure inside of spring.Specifically, the filter liquide that gets into filter core promotes spring through the inner actuating rod of force filter core, when the increase of filter core pressure, and then upwards operation of spring; When spring pressure reduces, then spring moves downwards.Simultaneously up and down the position of two sensors can be regulated, the origin during with the different filter liquide of correspondence.This shows that starting and closing backwash is to start according to the pressure feedback of the filter core elastic force F=k Δ x to spring.Wherein, k is the spring ratio of spring, and Δ x is the relative displacement of spring.Pressure and elastic force are the mathematical relationships of a linearity; The numerical value of corresponding pressure accurately, selection pressure arbitrarily when carrying out backwash has reached linear control to the effect of backwash; Thereby can select best startup and stop the backwash condition; Utilized the liquid of flushing fully, realized control, practiced thrift the used liquid of backwash the filter core backwash effect.
In one embodiment, above-mentioned upper sensor is a upper stroke switch, and said contact contacts with upper stroke switch, produces triggering signal, and control device starts backwash.
In one embodiment, above-mentioned upper stroke switch is two, divides the both sides that stand in said spring top.
In one embodiment, above-mentioned lower sensor is a lower stroke switch, and said contact contacts with lower stroke switch, produces triggering signal, and control device starts backwash.
In one embodiment, above-mentioned lower stroke switch is two, divides the both sides that stand in said spring below.
The present invention provides a kind of high-precision liquid filtration system, and said filtration system comprises high-precision liquid filter and high-precision liquid filter control system; Said high-precision liquid filter control system comprises being used for fixing filter core connecting rod, spring, upper sensor, lower sensor, contact, backwash starting switch, the backwash stopcock that connects filter core and being used for the controlled filter device and starts backwash and turn-off the control device of backwash; Said filter core connecting rod is fixedly connected with the middle part of said spring; Said upper sensor is positioned at the top of spring; Said lower sensor is positioned at the below of spring; Said filter core connecting rod is fixedly connected said contact; The last deformation band movable contact of said spring contacts with upper sensor, and the descending change of said spring drives the contact and contacts with lower sensor, and said upper sensor is connected with control device respectively with lower sensor.
In one embodiment, above-mentioned upper sensor is a upper stroke switch, and said contact contacts with upper stroke switch, produces triggering signal, and control device starts backwash.
In one embodiment, above-mentioned upper stroke switch is two, divides the both sides that stand in said spring top.
In one embodiment, above-mentioned lower sensor is a lower stroke switch, and said contact contacts with lower stroke switch, produces triggering signal, and control device starts backwash.
In one embodiment, above-mentioned lower stroke switch is two, divides the both sides that stand in said spring below.
Referring to Fig. 1, filter mainly is made up of tank body, filter core, valve, electric rotating machine.Need filtered liquid to pass through valve PSV16-D and get into tank body, through flowing out through PSV18-D behind the filter element filtering.Wherein, PSV18-D is the oil drain out valve; PSV16-D is the oil-in valve; MD11-D3 is an electric rotating machine; PSV17-D is the oil drain out valve.
Consult Fig. 1 and Fig. 2 together, stifled phenomenon takes place in any filter core in filter core, will trigger SL0, SL1, SL0, SL1 while and also can realize the effect of spring failure monitoring.After triggering signal triggers, start electric rotating machine, absolute encoder sends position signalling to micro computer, simultaneously with computer in this filter core position of setting relatively, behind the in-position, start the PSV17-D valve, beginning backwash work.After starting backwash work, begin to detect SL1 and SL3 activation signal, work as signal triggering, then close the PSV17-D valve, stop backwash work.Wherein, SL0, SL2: the induced signal sensor that stifled phenomenon takes place for filter core; SL1, SL3: filter the induced signal sensor of accomplishing for filter core.
See also Fig. 3, Fig. 4 and Fig. 5; Above-mentioned candle filter is the quick-changing type candle filter; Comprise a tank body G4, be positioned at the end cap G1 of tank body G4 upper and lower end, be arranged in the horizontally disposed demarcation strip G14 of tank body G4, and be arranged in a plurality of inclinations of tank body G4 or vertical filter core G5.The upper end of said filter core is fixed on the said demarcation strip G14.Said demarcation strip G14 is provided with the fixing fixing hole G141 with said filter core G5, and said filter core G5 is fixed among the fixing hole G141 of said demarcation strip G14 by a retaining mechanism.
See also Fig. 6 to Fig. 9, said retaining mechanism comprises a handwheel G2, drive link G3 and moving assembly, and the end of said drive link G3 is connected with the axis of said handwheel G2 and laterally arranges with said filter core G5; Said moving assembly is connected with said drive link G3, and drives the axial direction moving linearly along drive link G3 by said drive link G3; Said moving assembly is connected with said demarcation strip G14.
Said moving assembly comprises a unsteady gland guide plate G13 and an at least one unsteady gland G12; Said unsteady gland guide plate G13 and said demarcation strip G14 laterally arrange; Offer with said unsteady gland G12 the corresponding first locating hole G131 on the said unsteady gland guide plate G13; Said unsteady gland G12 is inserted in G131 in said first locating hole from top to bottom; Said drive link G3 drives the axial moving linearly of said unsteady gland guide plate G13 along drive link G3, thereby drives said unsteady gland G12 moving linearly vertically together, convexes with the fixture block G121 that balances or cancel each other at least on the said unsteady gland G12 inwall; Adjacent balancing or cancel each other is recessed to form draw-in groove G122 between the fixture block G121; One end of said filter core is provided with filter core joint G15, and said filter core joint G15 is inserted among the said unsteady gland G12, convexes with the projection G151 that fastens with said draw-in groove G122 on the outer wall of said filter core joint G15.Said filter core joint G15 can pass the gland G12 that floats downwards, and the postrotational projection G151 of filter core joint G15 may be stuck in the lower end that the gland that floats supports fixture block G121.
When quick-changing type filter core G5 filter breaks down needs replacing or cleaning at filter core G5; Only need open the end cap G1 of tank body G4 upper end; Rotation hand wheel G2 drives drive link G3 and rotates; Drive link G3 makes to float and becomes flexible between gland G12 and the said filter core joint G15, manually rotates filter core then, can filter core G5 be taken out; And when needs retighten filter core G5; Only need filter core G5 joint be inserted among the gland G12 that floats; Hand-held filter core rotates to an angle; And then reverse rotation handwheel G2, drive the to float projection G151 that fixture block presses said filter core joint G15 that supports of gland G12 of drive link G3 fastens, thereby makes filter core G5 and said unsteady gland G12 fastening.
Please continue to consult Fig. 5; Said moving assembly comprises a moving press plate G10; Said moving press plate G10 and said demarcation strip G14 laterally arrange; The center of said moving press plate G10 is connected with a feed screw nut G8, and said feed screw nut G8 is driven by said drive link G3 and does axially-movable, and said feed screw nut G8 drives said moving press plate G10 and does axially-movable together.
Said moving assembly also comprises a unsteady gland guide plate G13; Said unsteady gland guide plate G13 and said moving press plate G10 laterally arrange; Said unsteady gland guide plate G13 center is provided with a screw mandrel G7, and said screw mandrel G7 runs through said feed screw nut G8 and is connected through a shaft coupling G6 with said drive link G3.Said feed screw nut G8 drives said screw mandrel G7 through shaft coupling G6 and drives said unsteady gland guide plate G13 together along the axial moving linearly of screw mandrel G7.
Offer a plurality of first through hole G101 on the said moving press plate G10, the first locating hole G131 that offers on the said first through hole G101 and the said unsteady gland guide plate G13 is corresponding.Be provided with stage clip G11 between said moving press plate G10 and the said unsteady gland guide plate G13, said stage clip G11 is positioned at said unsteady gland G12.Said moving assembly also comprises spring press-cover G9, and the butt ring G92 that said spring press-cover G9 has a sleeve G91 and is connected with sleeve G91 one end periphery, said sleeve G91 are inserted among the said first through hole G101 and are connected on the said stage clip G11.The end of said unsteady gland G12 is set among the said sleeve G91, and the other end is inserted among the said first locating hole G131.Said butt ring G92 is connected on the surface of said moving press plate G10, and said filter core joint G15 is inserted among the sleeve G91 of said spring press-cover G9 and is pressed on the said stage clip G11.
Said moving press plate G10 is provided with hollow reference column G102; Said unsteady gland guide plate G13 is provided with axis of guide G132; The end of said axis of guide G132 is inserted among the said hollow reference column G102, thereby to playing the effect of guide-localization between moving press plate G10 and the unsteady gland guide plate G13.
Said demarcation strip G14 is provided with the 3rd locating hole G142, and said axis of guide G132 runs through said unsteady gland guide plate G13 vertically, and the other end of said axis of guide G132 is plugged among said the 3rd locating hole G142.
Offer the 4th locating hole G133 on the said unsteady gland guide plate G13, convex with alignment pin G145 on the said demarcation strip G14, said alignment pin is inserted G145 and is located among said the 4th locating hole G133.
Fixing hole G141 on the said demarcation strip G14 the peritreme place be provided with spacer pin G143; When said filter core joint G15 axially moves to a certain degree downwards; Said spacer pin G143 will be connected on the lateral margin of projection G151 of said filter core joint G15, plays the effect of restriction location.
When filter core generation fault causes filter to filter inefficacy; Such as filter core obstruction or damaged, the filter core that needs to break down takes out when dealing with and (cleans or renewal), only need open the end cap G1 of tank body G4 upper end; Rotation hand wheel G2 drives drive link G3 and rotates; Drive link G3 makes to float and becomes flexible between gland G12 and the said filter core joint G15, manually rotates filter core then, can filter core G5 be taken out; And when needs retighten filter core G5; Only need filter core G5 joint be inserted among the gland G12 that floats; Hand-held filter core rotates to an angle; And then reverse rotation handwheel G2, drive the to float projection G151 that fixture block presses said filter core joint G15 that supports of gland G12 of drive link G3 fastens, thereby makes filter core G5 and said unsteady gland G12 fastening.
Float in the gland G12 to support fixture block is four, on the inwall that is arranged on the plain unsteady gland G12 of institute of symmetry, the projection on the said filter core joint G5 is four, is symmetrical set respectively; So, said filter core rotation 45 degree can take out filter core or fastening.
Said be arranged on the gland G12 inwall that floats to support fixture block can also be two; And be symmetrical set; Projection on the said filter core joint G5 is two; Be symmetrical set, said operation principle is identical with the foregoing description substrate, and difference is that said filter core revolves and turn 90 degrees and can filter core be taken out or fastening.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. the control system of a high-precision liquid filter; It is characterized in that: comprise being used for fixing filter core connecting rod, spring, upper sensor, lower sensor, contact, backwash starting switch, the backwash stopcock that connects filter core and being used for the controlled filter device starting backwash and turn-offing the control device of backwash; Said filter core connecting rod is fixedly connected with the middle part of said spring; Said upper sensor is positioned at the top of spring; Said lower sensor is positioned at the below of spring, and said filter core connecting rod is fixedly connected said contact, and the last deformation band movable contact of said spring contacts with upper sensor; The descending change of said spring drives the contact and contacts with lower sensor, and said upper sensor is connected with control device respectively with lower sensor.
2. the control system of high-precision liquid filter according to claim 1, it is characterized in that: said upper sensor is a upper stroke switch.
3. the control system of high-precision liquid filter according to claim 2, it is characterized in that: said upper stroke switch is two, divides the both sides that stand in said spring top.
4. the control system of high-precision liquid filter according to claim 1, it is characterized in that: said lower sensor is a lower stroke switch.
5. the control system of high-precision liquid filter according to claim 4, it is characterized in that: said lower stroke switch is two, divides the both sides that stand in said spring below.
6. high-precision liquid filtration system is characterized in that: said filtration system comprises high-precision liquid filter and high-precision liquid filter control system; Said high-precision liquid filter control system comprises being used for fixing filter core connecting rod, spring, upper sensor, lower sensor, contact, backwash starting switch, the backwash stopcock that connects filter core and being used for the controlled filter device and starts backwash and turn-off the control device of backwash; Said filter core connecting rod is fixedly connected with the middle part of said spring; Said upper sensor is positioned at the top of spring; Said lower sensor is positioned at the below of spring; Said filter core connecting rod is fixedly connected said contact; The last deformation band movable contact of said spring contacts with upper sensor, and the descending change of said spring drives the contact and contacts with lower sensor, and said upper sensor is connected with control device respectively with lower sensor.
7. high-precision liquid filtration system according to claim 6 is characterized in that: said upper sensor is a upper stroke switch.
8. high-precision liquid filtration system according to claim 7 is characterized in that: said upper stroke switch is two, divides the both sides that stand in said spring top.
9. high-precision liquid filtration system according to claim 6 is characterized in that: said lower sensor is a lower stroke switch.
10. high-precision liquid filtration system according to claim 9 is characterized in that: said lower stroke switch is two, divides the both sides that stand in said spring below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105009305A CN101979123B (en) | 2010-10-09 | 2010-10-09 | Control system for high-precision liquid filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105009305A CN101979123B (en) | 2010-10-09 | 2010-10-09 | Control system for high-precision liquid filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101979123A CN101979123A (en) | 2011-02-23 |
| CN101979123B true CN101979123B (en) | 2012-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105009305A Expired - Fee Related CN101979123B (en) | 2010-10-09 | 2010-10-09 | Control system for high-precision liquid filter |
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| Country | Link |
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| CN (1) | CN101979123B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9675916B2 (en) * | 2012-10-04 | 2017-06-13 | Eaton Corporation | Servo-controlled backwash filter system |
| CN109621514B (en) * | 2019-01-08 | 2023-10-03 | 威孔过滤科技（苏州）有限公司 | Candle type filter element with switch and filtering method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102298A (en) * | 1986-03-03 | 1987-10-21 | C·I·B公司 | Fluid filter with self-cleaning action |
| CN201361483Y (en) * | 2009-02-12 | 2009-12-16 | 北京承天倍达过滤技术有限责任公司 | Locating device of liquid filter element type back-flushing filter |
| CN101816847A (en) * | 2010-05-05 | 2010-09-01 | 北京天地玛珂电液控制系统有限公司 | Back washing filter |
| CN201848136U (en) * | 2010-10-09 | 2011-06-01 | 深圳市森科妍科技有限公司 | Control system of high-precision liquid filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004004756A1 (en) * | 2004-01-30 | 2005-08-25 | Hydac Process Technology Gmbh | filter means |
-
2010
- 2010-10-09 CN CN2010105009305A patent/CN101979123B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102298A (en) * | 1986-03-03 | 1987-10-21 | C·I·B公司 | Fluid filter with self-cleaning action |
| CN201361483Y (en) * | 2009-02-12 | 2009-12-16 | 北京承天倍达过滤技术有限责任公司 | Locating device of liquid filter element type back-flushing filter |
| CN101816847A (en) * | 2010-05-05 | 2010-09-01 | 北京天地玛珂电液控制系统有限公司 | Back washing filter |
| CN201848136U (en) * | 2010-10-09 | 2011-06-01 | 深圳市森科妍科技有限公司 | Control system of high-precision liquid filter |
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| Publication number | Publication date |
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| CN101979123A (en) | 2011-02-23 |
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Granted publication date: 20121114 Termination date: 20161009 |