CN101979123A - Control system for high-precision liquid filter - Google Patents
Control system for high-precision liquid filter Download PDFInfo
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- CN101979123A CN101979123A CN2010105009305A CN201010500930A CN101979123A CN 101979123 A CN101979123 A CN 101979123A CN 2010105009305 A CN2010105009305 A CN 2010105009305A CN 201010500930 A CN201010500930 A CN 201010500930A CN 101979123 A CN101979123 A CN 101979123A
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- spring
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- filter core
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- 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 intelligent situation on the low side of backwash control system that has filter at present in the filtration art of liquid.Because filter will carry out backwash after using, and the liquid of use backwash is the liquid after filtering, and causes the filter liquide use amount of backwash bigger than normal, causes 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 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 and be used for fixing the filter core connecting rod that connects filter core, spring, upper sensor, lower sensor, the contact, the backwash starting switch, backwash stopcock and the control device that is used for startup backwash of controlled filter device and shutoff backwash, described filter core connecting rod is fixedlyed connected with the middle part of described spring, described upper sensor is positioned at the top of spring, described lower sensor is positioned at the below of spring, the fixedly connected described contact of described filter core connecting rod, the last deformation band movable contact of described spring contacts with upper sensor, the descending change of described spring drives the contact and contacts with lower sensor, and described upper sensor is connected with control device respectively with lower sensor.
Wherein, described upper sensor is a upper stroke switch.
Wherein, described upper stroke switch is two, divides the both sides that stand in described spring top.
Wherein, described lower sensor is a lower stroke switch.
Wherein, described lower stroke switch is two, divides the both sides that stand in described 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 described filtration system comprises high-precision liquid filter and high-precision liquid filter control system; Described high-precision liquid filter control system comprises and is used for fixing the filter core connecting rod that connects filter core, spring, upper sensor, lower sensor, the contact, the backwash starting switch, backwash stopcock and the control device that is used for startup backwash of controlled filter device and shutoff backwash, described filter core connecting rod is fixedlyed connected with the middle part of described spring, described upper sensor is positioned at the top of spring, described lower sensor is positioned at the below of spring, the fixedly connected described contact of described filter core connecting rod, the last deformation band movable contact of described spring contacts with upper sensor, the descending change of described spring drives the contact and contacts with lower sensor, and described upper sensor is connected with control device respectively with lower sensor.
Wherein, described upper sensor is a upper stroke switch.
Wherein, described upper stroke switch is two, divides the both sides that stand in described spring top.
Wherein, described lower sensor is a lower stroke switch.
Wherein, described lower stroke switch is two, divides the both sides that stand in described 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 must carrying out backwash, the filter core obstruction just starts 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 diagram 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 describing technology contents of the present invention, structural feature in detail, 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 and be used for fixing the filter core connecting rod 11 that connects filter core 10, spring 12, upper sensor 13, lower sensor 14, contact 15, backwash starting switch (not shown), backwash stopcock (not shown) and the control device (not shown) that is used for startup backwash of controlled filter device and shutoff backwash, described filter core connecting rod 11 is fixedlyed connected with the middle part of described spring 12, described upper sensor 13 is positioned at the top of spring 12, described lower sensor 14 is positioned at the below of spring 12, fixedly connected described contact 15, the end of filter core connecting rod 11, 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 described spring 12 contacts with upper sensor, the descending change of described spring 12 drives contact 15 and contacts with lower sensor, and described 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 described 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 described 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 must carrying out backwash, the filter core obstruction just starts 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 by inside passed on the spring, according to the pressure feedback filter core pressure inside of spring.Specifically, the filter liquide that enters filter core promotes the actuating rod of filter core inside by pressure, promotes spring, 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, effect to backwash has reached linear control, thereby can select best startup and stop the backwash condition, utilized the liquid of flushing fully, realized control, saved the used liquid of backwash the filter core backwash effect.
In one embodiment, above-mentioned upper sensor is a upper stroke switch, and described 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 described spring top.
In one embodiment, above-mentioned lower sensor is a lower stroke switch, and described 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 described spring below.
The invention provides a kind of high-precision liquid filtration system, described filtration system comprises high-precision liquid filter and high-precision liquid filter control system; Described high-precision liquid filter control system comprises and is used for fixing the filter core connecting rod that connects filter core, spring, upper sensor, lower sensor, the contact, the backwash starting switch, backwash stopcock and the control device that is used for startup backwash of controlled filter device and shutoff backwash, described filter core connecting rod is fixedlyed connected with the middle part of described spring, described upper sensor is positioned at the top of spring, described lower sensor is positioned at the below of spring, the fixedly connected described contact of described filter core connecting rod, the last deformation band movable contact of described spring contacts with upper sensor, the descending change of described spring drives the contact and contacts with lower sensor, and described upper sensor is connected with control device respectively with lower sensor.
In one embodiment, above-mentioned upper sensor is a upper stroke switch, and described 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 described spring top.
In one embodiment, above-mentioned lower sensor is a lower stroke switch, and described 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 described spring below.
Referring to Fig. 1, filter mainly is made up of tank body, filter core, valve, electric rotating machine.Need filtered liquid to enter tank body, by flowing out through PSV18-D behind the filter element filtering by valve PSV16-D.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 one 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 finishing 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 described filter core is fixed on the described demarcation strip G14.Described demarcation strip G14 is provided with the fixing fixing hole G141 with described filter core G5, and described filter core G5 is fixed among the fixing hole G141 of described demarcation strip G14 by a retaining mechanism.
See also Fig. 6 to Fig. 9, described retaining mechanism comprises a handwheel G2, drive link G3 and moving assembly, and the end of described drive link G3 is connected with the axis of described handwheel G2 and be arranged in parallel with described filter core G5; Described moving assembly is connected with described drive link G3, and by the axial direction moving linearly of described drive link G3 drive along drive link G3; Described moving assembly is connected with described demarcation strip G14.
Described moving assembly comprises a unsteady gland guide plate G13 and an at least one unsteady gland G12, described unsteady gland guide plate G13 and described demarcation strip G14 be arranged in parallel, offer with described unsteady gland G12 the corresponding first locating hole G131 on the described unsteady gland guide plate G13, described unsteady gland G12 is inserted in G131 in described first locating hole from top to bottom, described drive link G3 drives the axial moving linearly of described unsteady gland guide plate G13 along drive link G3, thereby drive described unsteady gland G12 moving linearly vertically together, convex with the fixture block G121 that balances or cancel each other at least on the described 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 described filter core is provided with filter core joint G15, described filter core joint G15 is inserted among the described unsteady gland G12, convexes with the projection G151 that fastens with described draw-in groove G122 on the outer wall of described filter core joint G15.Described 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 described filter core joint G15, manually rotate filter core then, filter core G5 can be taken out; And when needs retighten filter core G5, only filter core G5 joint need 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 described filter core joint G15 that supports of gland G12 of drive link G3 fastens, thereby makes filter core G5 and described unsteady gland G12 fastening.
Please continue to consult Fig. 5, described moving assembly comprises a moving press plate G10, described moving press plate G10 and described demarcation strip G14 be arranged in parallel, the center of described moving press plate G10 is connected with a feed screw nut G8, described feed screw nut G8 is driven by described drive link G3 and does axially-movable, and described feed screw nut G8 drives described moving press plate G10 and does axially-movable together.
Described moving assembly also comprises a unsteady gland guide plate G13, described unsteady gland guide plate G13 and described moving press plate G10 be arranged in parallel, described unsteady gland guide plate G13 center is provided with a screw mandrel G7, and described screw mandrel G7 runs through described feed screw nut G8 and is connected by a shaft coupling G6 with described drive link G3.Described feed screw nut G8 drives described screw mandrel G7 by shaft coupling G6 and drives described 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 described moving press plate G10, the first locating hole G131 that offers on the described first through hole G101 and the described unsteady gland guide plate G13 is corresponding.Be provided with stage clip G11 between described moving press plate G10 and the described unsteady gland guide plate G13, described stage clip G11 is positioned at described unsteady gland G12.Described moving assembly also comprises spring press-cover G9, and the butt ring G92 that described spring press-cover G9 has a sleeve G91 and is connected with sleeve G91 one end periphery, described sleeve G91 are inserted among the described first through hole G101 and are connected on the described stage clip G11.The end of described unsteady gland G12 is set among the described sleeve G91, and the other end is inserted among the described first locating hole G131.Described butt ring G92 is connected on the surface of described moving press plate G10, and described filter core joint G15 is inserted among the sleeve G91 of described spring press-cover G9 and is pressed on the described stage clip G11.
Described moving press plate G10 is provided with hollow reference column G102, described unsteady gland guide plate G13 is provided with axis of guide G132, the end of described axis of guide G132 is inserted among the described hollow reference column G102, thereby to playing the effect of guide-localization between moving press plate G10 and the unsteady gland guide plate G13.
Described demarcation strip G14 is provided with the 3rd locating hole G142, and described axis of guide G132 runs through described unsteady gland guide plate G13 vertically, and the other end of described axis of guide G132 is plugged among described the 3rd locating hole G142.
Offer the 4th locating hole G133 on the described unsteady gland guide plate G13, convex with alignment pin G145 on the described demarcation strip G14, described alignment pin is inserted G145 and is located among described the 4th locating hole G133.
Fixing hole G141 on the described demarcation strip G14 the peritreme place be provided with spacer pin G143, when described filter core joint G15 axially moves to a certain degree downwards, described spacer pin G143 will be connected on the lateral margin of projection G151 of described filter core joint G15, plays the effect of restriction location.
When filter core generation fault causes filter to filter inefficacy, stop up or breakage such as filter core, 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 described filter core joint G15, manually rotates filter core then, filter core G5 can be taken out; And when needs retighten filter core G5, only filter core G5 joint need 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 described filter core joint G15 that supports of gland G12 of drive link G3 fastens, thereby makes filter core G5 and described 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 described filter core joint G5 is four, is symmetrical arranged respectively; So, described filter core rotation 45 degree can take out filter core or be fastening.
Described be arranged on the gland G12 inwall that floats to support fixture block can also be two, and be symmetrical arranged, projection on the described filter core joint G5 is two, be symmetrical arranged, described operation principle is identical with the foregoing description substrate, and difference is that described filter core revolves to turn 90 degrees and filter core can be taken out or fastening.
The above only is 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 the filter core connecting rod that connects filter core, spring, upper sensor, lower sensor, the contact, the backwash starting switch, backwash stopcock and the control device that is used for startup backwash of controlled filter device and shutoff backwash, described filter core connecting rod is fixedlyed connected with the middle part of described spring, described upper sensor is positioned at the top of spring, described lower sensor is positioned at the below of spring, the fixedly connected described contact of described filter core connecting rod, the last deformation band movable contact of described spring contacts with upper sensor, the descending change of described spring drives the contact and contacts with lower sensor, and described 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: described 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: described upper stroke switch is two, divides the both sides that stand in described spring top.
4. the control system of high-precision liquid filter according to claim 1, it is characterized in that: described 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: described lower stroke switch is two, divides the both sides that stand in described spring below.
6. high-precision liquid filtration system, it is characterized in that: described filtration system comprises high-precision liquid filter and high-precision liquid filter control system; Described high-precision liquid filter control system comprises and is used for fixing the filter core connecting rod that connects filter core, spring, upper sensor, lower sensor, the contact, the backwash starting switch, backwash stopcock and the control device that is used for startup backwash of controlled filter device and shutoff backwash, described filter core connecting rod is fixedlyed connected with the middle part of described spring, described upper sensor is positioned at the top of spring, described lower sensor is positioned at the below of spring, the fixedly connected described contact of described filter core connecting rod, the last deformation band movable contact of described spring contacts with upper sensor, the descending change of described spring drives the contact and contacts with lower sensor, and described 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: described upper sensor is a upper stroke switch.
8. high-precision liquid filtration system according to claim 7 is characterized in that: described upper stroke switch is two, divides the both sides that stand in described spring top.
9. high-precision liquid filtration system according to claim 6 is characterized in that: described lower sensor is a lower stroke switch.
10. high-precision liquid filtration system according to claim 9 is characterized in that: described lower stroke switch is two, divides the both sides that stand in described 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 true CN101979123A (en) | 2011-02-23 |
| CN101979123B CN101979123B (en) | 2012-11-14 |
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| 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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| CN (1) | CN101979123B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109621514A (en) * | 2019-01-08 | 2019-04-16 | 威孔过滤科技（苏州）有限公司 | A kind of candle type filter element and its filter method of belt switch |
| CN110280059A (en) * | 2012-10-04 | 2019-09-27 | 伊顿智能动力有限公司 | Servo-controlled backwash filter system |
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| 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 |
| WO2005072845A1 (en) * | 2004-01-30 | 2005-08-11 | Hydac Process Technology Gmbh | Filter device |
| 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 |
-
2010
- 2010-10-09 CN CN2010105009305A patent/CN101979123B/en not_active Expired - Fee Related
Patent Citations (5)
| 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 |
| WO2005072845A1 (en) * | 2004-01-30 | 2005-08-11 | Hydac Process Technology Gmbh | Filter device |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110280059A (en) * | 2012-10-04 | 2019-09-27 | 伊顿智能动力有限公司 | Servo-controlled backwash filter system |
| CN109621514A (en) * | 2019-01-08 | 2019-04-16 | 威孔过滤科技（苏州）有限公司 | A kind of candle type filter element and its filter method of belt switch |
| 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 |
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| Publication number | Publication date |
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| CN101979123B (en) | 2012-11-14 |
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Granted publication date: 20121114 Termination date: 20161009 |