CN101073728A - Self-flushing intermittent filter - Google Patents
Self-flushing intermittent filter Download PDFInfo
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- CN101073728A CN101073728A CN 200710024631 CN200710024631A CN101073728A CN 101073728 A CN101073728 A CN 101073728A CN 200710024631 CN200710024631 CN 200710024631 CN 200710024631 A CN200710024631 A CN 200710024631A CN 101073728 A CN101073728 A CN 101073728A
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- filter
- control valve
- pressure
- lower cover
- loam cake
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Abstract
The invention is concerned with a batch self-flush filter, relating to filter shell, revolving filter core body, self flush implement and batch control valve. The filter shell is made up of cylinder type of crust, upper cover, down cover and bolt of splint, and the filter core body is a cylinder made of core bracket connecting with upper and down covers through bolts. The filer net is on outside of the bracket, and the filter core body connects with filter shell in type of bearing. The down cover of filter core body is made up with impeller as a whole and crescent type of self-flush implement insert on the upper cover of filter shell and the groove of splint. The different pressure control valve connects with upper cover, main press and assistant press shell, dirt excluding shell and bolt of down cover. The press film connects with bolt, sleeve and control head through screw thread. The assistant press pipe and main press pipe connect with inner and outside press pipe of shell respectively. It completes filtration and self- flush of filter core by the energy of liquid owning press without additional power in simple installation and convenient use.
Description
One, technical field
The present invention relates to a kind of filter, specifically relate to a kind of device that the small size solid particle that is mixed with in the fluid liquid is separated, be used in the self-flushing intermittent filter of the filtration usefulness of the liquid pressure flow bodies such as solid granule that are mixed with in the solid granule that is mixed with in the water, the light oil.
Two, background technology
Now on the market, various filters are various in style, respectively characteristics are arranged, and conclude and get up to have following two types: plain filter, this filter needed to clean filter screen after work a period of time, were eliminated gradually; Have the automatically filter of flushing of filter screen, need additional power source, under the dragging of motor, spin rinse and by electric control valve or manual intervention is discharged dirt.This filter is owing to need to use additional power source, and its cost and the scope of application all are subjected to bigger restriction.
Three, summary of the invention
The object of the present invention is to provide a kind of without any need for additionaling power, finish self-flushing intermittent filter automatically to filter core flushing.
The objective of the invention is to realize by following technical scheme:
This device utilizes fluid machinery, a kind of filter that the hydrodynamics scheduling theory is made, by the self-flushing intermittent filter housing, the rotation filter body, from flusher, batch pressure-differential controlling valve four parts are formed, being filtered fluid must be the pressure flow body, can be according to actual needs, by selecting different filter cores for use, the filter core of rotation filter body can be changed as required from 0.1 millimeter ~ 2 millimeters variations in a filtration footpath, is a kind of brand-new, need not add any power, automatically finish flushing to filter core, the rotary filter of the continuous operation of automatic batch (-type) blowdown.
This self-flushing intermittent filter utilizes the self-energy of pressure flow body, has solved the automatic washing problems of filter filtration and filter core, without any need for additionaling power.
Under the effect of pressure flow body, be filtered fluid and finish filtering function by the filter screen of rotation filter core; The rotation filter core make filter screen each part can both with contact from syringe, under the control of differential pressure control valve, finish the flushing certainly of filter screen, and dirt discharged the external of self-flushing intermittent filter.Because it is do not need external energy, not only energy-conservation like this, and the scope of application of filter expands greatly, can also satisfy the filtration needs of some special occasions simultaneously.
A kind of self-flushing intermittent filter, comprise filter housings (1) and rotation filter body (2), it is characterized in that this filter also comprises from syringe (3) and batch pressure-differential controlling valve (4), the lower cover (18) of described rotation filter body (2) is as a whole with impeller blade (19), be made into a kind of rotary wheel of water turbine of extraordinary form, filter body (2) is connected for bearing-type with filter housings (1), crescent is inlaid into respectively in the crescent shaped groove (15) that is complementary on filter housings loam cake (6) and the supporting plate (8) above the lower cover (7) from the top and the bottom of syringe (3), blow-off pipe (23) is housed from syringe (3) bottom and is connected with batch pressure-differential controlling valve (4), batch pressure-differential controlling valve (4) is cylindrical, from top to bottom by control valve loam cake (25), the secondary pressure shell body (24) of control valve, control valve master pressure shell body (33), control valve blowdown housing (34), control valve lower cover (32) is formed, control valve loam cake (25) wherein, the cylinder periphery of secondary pressure shell body (24) of control valve and control valve master pressure shell body (33) all has six screws, be connected on the control valve blowdown housing (34) with six bolts respectively, the periphery of control valve lower cover (32) has six screws, be connected on the control valve blowdown housing (34) with other 6 bolts, the central authorities of batch pressure-differential controlling valve (4) are the last films by the pressure membrane (31) of batch pressure-differential controlling valve, middle film, following film is by control volume bolt (35), two sleeves (27) and control head (30) are by being threaded, form control volume, wherein, spring (28) is equipped with in the upper end of control volume bolt (35), the upper end of spring (28) with pass control valve loam cake (25) center, regulating bolt (29) with the pressure that is threaded is connected, the lower end links to each other with control volume by control volume bolt (35), the outer rim of the last film of round pressure film (31) embeds between control valve loam cake (25) and the secondary pressure shell body of control valve (24), the outer rim of the middle film of pressure membrane (31) embeds between secondary pressure shell body (24) of control valve and the control valve master pressure shell body (33), the outer rim of the following film of pressure membrane (31) embeds between control valve master's pressure shell body (33) and the control valve blowdown housing (34), and compress by 6 bolts, on the pressure membrane (31), in, the center of three films of following film has circular hole, control volume bolt (35) passes, in, the center hole of following three films, three films between any two by two sleeves (27) at interval, compress by being threaded with control head (30) by control volume bolt (35), secondary stress pipe (37) is equipped with in a side of the secondary pressure shell body of control valve (24), and be communicated with internal pressure pipe (12) on the filter housings loam cake (6), principal pressure pipe (36) is equipped with in a side of control valve master pressure shell body (33), is communicated with external pressure solenoid (11) on the filter housings loam cake (6).
Above-mentioned filter housings (1) is by 8 stay bolts, connect filter housings loam cake (6), corresponding 8 circular holes of housing lower cover (7) and position supporting plate (8) thereon, with filter housings loam cake (6), barrel shrond (5), supporting plate (8), housing lower cover (7) links together, on the circle of barrel shrond (5), the following case top lid (6) that is embedded into filter respectively, in the Baltimore groove of supporting plate (8), there is a columniform guide shaft cover (9) in case top lid (6) central authorities, its top is filter outlet pipe (10), side lower part at outlet pipe (10) is equipped with internal pressure pipe (12), one side of case top lid (6) is equipped with external pressure solenoid (11), housing lower cover (7) central authorities are bearing holder (housing, cover) (13), and filter inleting pipe (14) is equipped with in its underpart.
Above-mentioned rotation filter body (2) is to be embedded in the groove of filter body loam cake (17) and lower cover (18) by filter core support (16), and 8 screws by the upper and lower cover periphery are connected with 8 bolts and constitute cylindrical shape, filter screen (20) is attached to the outer wall of filter core support (16), the cylindrical outlet pipe (21) of filter core loam cake (17) central authorities embeds in the cylindrical shape guide shaft cover (9) of filter cover (6) central authorities, the cylinder-shaped bearing (22) at filter body lower cover (18) center inserts in the bearing holder (housing, cover) (13) at filter housings lower cover (7) center, constitutes bearing-type and connects.
Above-mentioned impeller blade (19) is made up of 6 three-dimensional twisted blades.
Above-mentioned filter core support (16) is the cylindrical shape of hollow out one-tenth " X " word support all around.
Control head (30) in the above-mentioned batch pressure-differential controlling valve (4) is cylindric, and the lower end is a circular arc, and the lower end is a circular arc.
The operation principle of filter of the present invention: circular filter water inlet pipe (14) mouth of pressure flow body on the filter lower cover (7) of self-flushing intermittent filter enters, flow through the impeller blade (19) of the special turbine impeller of filter body lower cover (7), fluid is entered outside the rotation filter body (2) to dispersion all around, in this process, promote rotation filter body (2) rotation, for following filter core cleans ready; Be positioned at self-flushing intermittent filter, the outer pressure flow body of rotation filter body, under the effect of fluid self pressure, see through the filter screen (20) of rotation filter body (2) and the inner chamber that filter core support (16) enters rotation filter body (2) continuously, finish the filtration of fluid; Be positioned at the fluid that is filtered in rotation filter body (2) chamber, the cylindrical outlet pipe (21) central by the loam cake (17) of filter body enters filter outlet pipe (10), and outflow filter is finished filtration.
Prolongation along with filtration time, the dirt of filter screen (20) surface attachment of the rotation filter body (2) of self-flushing intermittent filter increases gradually, the effective penetrating surface area of filter core reduces gradually, filter screen (20) the pressure at both sides difference of rotation filter body (3) increases gradually, when pressure reduction reaches certain value, batch pressure-differential controlling valve (4) action, the blow-off pipe (23) that makes and link to each other from syringe (3), connect with the sewage draining exit (26) that is positioned at batch pressure-differential controlling valve (4) control valve lower cover (32) that connects atmosphere, make the pressure reduction in syringe (3) (be lower than the pressure in rotation filter body (2) chamber, and be higher than atmospheric pressure), few segment fluid flow of the clean fluid of having filtered in the rotation filter body (2), oppositely by rotating the filter core of filter body (2), the related dirt that is attached on the filter screen (20) pours from syringe (3), by blow-off pipe (23), sewage draining exit (26) is discharged self-flushing intermittent filter.
Because in filter process, the main pressure in main pressure shell body (33) chamber of the batch pressure-differential controlling valve that links to each other with the external pressure solenoid (11) that is positioned at filter cover (6) is all the time greater than the secondary pressure in the secondary pressure shell body (24) of the control valve that links to each other with the internal pressure pipe (12) that is positioned at filter outlet pipe (10) chamber, thereby act on control valve pressure membrane (31) (on, the effective area of following film equates, less than media area) on the resultant pressure direction upwards, when filtering beginning, the pressure that adjustment is positioned on the control valve loam cake (25) of batch pressure-differential controlling valve (4) is regulated bolt (29), the downward spring force that spring (28) is produced is a bit larger tham top resultant pressure, batch pressure-differential controlling valve this moment (4) is in closed condition, pressure membrane (31) in the control valve blowdown housing (34) of batch pressure-differential controlling valve (4) effective area of film down equates with the effective area of control head (30), by the secondary pressure that the blow-off pipe from syringe (3) (23) of filter transmits, act on the following film of pressure membrane (31) and control head to make a concerted effort be zero; Prolongation along with filtration time, work as the master, secondary pressure difference increases, during the spring force of making a concerted effort to produce greater than spring (28), move on the related control head of central control volume (30) of control valve, make the sewage draining exit (26) of control valve that a little opening be arranged, come from sewage in this moment control valve blowdown housing (34) from syringe (3), enter sewage draining exit (26) through this opening and discharge control valve, pressure in the effective area of control head (30) and the control valve blowdown housing (34) all descends, but act on making a concerted effort that film and control head (30) make progress under the pressure membrane (31) greater than zero, impel on the related control head of central control volume (30) of control valve and move, the downward elastic force that the spring (28) of same control valve produces strengthens, and finally is stabilized in an equalization point; Along with flushing to filter core, the pressure reduction of filter screen (20) both sides of rotation filter body (2) reduces gradually, act on the control valve control volume make a concerted effort reduce, the control volume that connects control head (30) moves down in the effect of spring force, when major and minor pressure reduction is opened the pressure reduction certain value in the moment less than control valve, at this moment, total the making a concerted effort that spring force is produced following film, the control head (30) of pressure membrane (31) more than or equal to the pressure in the control valve blowdown housing (34) with batch pressure-differential controlling valve (4) of making a concerted effort of making progress of being produced by major and minor pressure reduction, control valve is closed.Because there is a pressure differential between opening and closing, thereby, after control valve is opened, can keep certain hour; Equally, after control valve is closed, also need certain hour, could open again, thereby be " batch (-type) ".
Filter of the present invention is compared with existing filter and had the following advantages: the fluid that the present invention filtered flows to, flows out all pressure, utilize the energy of fluid self, finish the flushing certainly of filtering flow and filter core, broken away from of the dependence of the filter of its similar function in market to additionaling power (), install simple, esy to use, safe and reliable, the filtering accuracy height, filter area is wide, be a kind of energy-conserving product of novel, environment-friendly type, be with a wide range of applications and promotional value.
Four, description of drawings:
Fig. 1-self-flushing intermittent filter structural representation
The housing schematic diagram of Fig. 2 filter
Fig. 3-rotation filter body schematic diagram
Fig. 4 is from syringe schematic diagram (A is a front view, and B is a vertical view)
Fig. 5 batch pressure-differential controlling valve schematic diagram
The schematic diagram that Fig. 6 filter cover is looked up
Fig. 7 filter supporting plate schematic top plan view
Reference numeral:
The 1-filter housings
2-rotates filter body
3-is from syringe
The 4-batch pressure-differential controlling valve
The 5-barrel shrond
The 6-case top lid
7-housing lower cover
The 8-supporting plate
The cylindrical guide bearing of 9-
The 10-filter outlet pipe
11-external pressure solenoid
12-internal pressure pipe
The 13-bearing holder (housing, cover)
The 14-filter inleting pipe
The 15-crescent shaped groove
16-filter core support
17-filter body loam cake
18-filter body lower cover
The 19-impeller blade
The 20-filter screen
The cylindrical outlet pipe of 21-
The 22-bearing
The 23-blow-off pipe
The secondary pressure shell body of 24-control valve
25-control valve loam cake
The 26-sewage draining exit
The 27-sleeve
The 28-spring
29-pressure is regulated bolt
The 30-control head
The 31-pressure membrane
32-control valve lower cover
33-control valve master pressure shell body
34-control valve blowdown housing
35-control volume bolt
36-principal pressure pipe
37-secondary stress pipe
Five, the specific embodiment:
For the filtration of technical water supply commonly used in the hydraulic power plant, filter outlet pressure is 0.25MPa, and rate of discharge is 1000m3/h, and the filtering particle diameter is 1mm.
It is that the seamless steel pipe that the standard carbon steel of 10mm is rolled into diameter 1200mm is made height 1200mm that barrel shrond in this filter graph 2 (5) adopts thickness; Fig. 2 middle shell loam cake (6), housing lower cover (7) all adopt the standard carbon steel manufacturing of respective thickness, diameter with highly press the amplification of drawing dimension scale, 8 bolts employing Φ 12mm standard bolts; Fig. 3 rotates the filter core support (16) of filter body, filter body loam cake (17), filter body lower cover (18), all adopt nontoxic PVC plastics to make, on, lower cover diameter and circle tube leaching net (20) overall diameter is 800mm, filter core support (16) outside diameter is 799mm, stainless steel filtering net, the thick stainless steel filtering net of 0.5mm of employing orifice diameter 1.5mm sticks on the filter core support (16) and surrounds a week, filter screen adopts slitless connection, prior and filter core support (16) is carried out, hollow out became the cylindrical shape that " X " word supports around its filter core support (16) was made, on, the lower end is embedded in respectively in the groove of loam cake (17) and lower cover (18), pass filter body loam cake (17) by 8 Φ 8mm master screws again, be connected with the nut that filter body lower cover (18) is made 8 relevant positions of an integral body with adopting the method for imbedding in advance, with the filter body loam cake (17) of the related stainless steel filtering net of filter core support (16) (20) with rotation filter body (2), filter body lower cover (18) connects into an integral body, rotate the cylindrical outlet pipe (21) of filter body then, be installed in the cylindrical guide bearing (9) on the case top lid (6) of filter, the bearing of filter body lower cover (22) is fit in the respective shaft bearing sleeve (13) of housing lower cover (7), and makes rotation filter body (2) and filter housings loam cake (6), rigging error between the housing lower cover (7) is not more than 1mm.The impeller blade of being made up of 6 three-dimensional twisted blades (19) also adopts the PVC plastics to make, and by watering the method for moulding, makes an integral body with filter body lower cover (18), and vane thickness is between 5mm ~ 10mm.
Meniscately make with the PVC plastics from syringe (3), thickness is 5mm, height is as the criterion with the rotation filter body, the upper end is inlaid in the crescent shaped groove of filter housings loam cake (6) inner bottom surface, the lower end is inlaid in the crescent shaped groove that is complementary on the supporting plate (8), from syringe (3) bottom blow-off pipe (23) is housed, its diameter is 20mm, and is connected with blow-off pipe on the differential pressure control valve.
On the control valve loam cake (25) of batch pressure-differential controlling valve (4), the secondary pressure shell body (24) of control valve, control valve master pressure shell body (33), the blowdown housing (34), control valve lower cover (32) is all equidistantly distributing 6 bolts hole with the cylindrical shape cylinder periphery that carbon steel is made, bolt with 6 Φ 8mm links into an integrated entity, its overall diameter is 600mm, and interior diameter is 450-500mm.
The pressure membrane (31) of batch pressure-differential controlling valve (4) adopts the rubber ripple film of liner gauze, on it, following film effective diameter is got 30mm's, middle film effective diameter is got 100mm, the last film outer rim of pressure membrane (31) embeds between control valve loam cake (25) and the secondary pressure shell body of control valve (24), the outer rim of the middle film of pressure membrane (31) embeds between secondary pressure shell body (24) of control valve and the control valve master pressure shell body (33), the following film outer rim of pressure membrane (31) embeds between main pressure shell body (33) and the blowdown housing (34), compress by 6 bolts, on the pressure membrane (31), in, the center of following three films has circular hole, control volume bolt (35) passes the circular hole of three center membranes, three films between any two by two sleeves (27) at interval, and compress the principal pressure pipe (36) of control valve by being threaded with control head (30) by control volume bolt (35), secondary stress pipe (37), blow-off pipe (23) respectively with filter external pressure solenoid (11), internal pressure pipe (12), blow-off pipe (23) adopts pressure-resistant plastic tube to connect.
Filter a filter that the footpath requires for difference, can realize by the way of changing filter screen (20), filtration for specific (special) requirements, can also adopt ceramic element, replace filter screen (20) and filter core support (16), its ceramic element not only plays the effect of filter screen, still rotates the supporter of filter body simultaneously, guarantees the physical dimension and the intensity of rotation filter body.
Claims (8)
1. self-flushing intermittent filter, comprise filter housings (1) and rotation filter body (2), it is characterized in that this filter also comprises from syringe (3) and batch pressure-differential controlling valve (4), the lower cover (18) of described rotation filter body (2) is as a whole with impeller blade (19), be made into a kind of rotary wheel of water turbine of extraordinary form, filter body (2) is connected for bearing-type with filter housings (1), crescent is inlaid into respectively in the crescent shaped groove (15) that is complementary on filter housings loam cake (6) and the supporting plate (8) above the lower cover (7) from the top and the bottom of syringe (3), blow-off pipe (23) is housed from syringe (3) bottom and is connected with batch pressure-differential controlling valve (4), batch pressure-differential controlling valve (4) is by control valve loam cake (25), the secondary pressure shell body (24) of control valve, control valve master pressure shell body (33), control valve blowdown housing (34), control valve lower cover (32) connects the cylindrical housing of being formed by bolt, the central authorities of shell body are the control volumes of control valve, it is the last film by the pressure membrane of batch pressure-differential controlling valve (31), middle film, following film is by control volume bolt (35), two sleeves (27) are connected by bolt with control head (30), form control volume, wherein, the upper end of control volume bolt (35) is connected with spring (28), the upper end of spring (28) and pressure regulate that bolt (29) is connected and the control volume formed, secondary stress pipe (37) is equipped with in a side of the secondary pressure shell body of control valve (24), and be communicated with internal pressure pipe (12) on the filter housings loam cake (6), principal pressure pipe (36) is equipped with in a side of control valve master pressure shell body (33), is communicated with external pressure solenoid (11) on the filter housings loam cake (6).
2. filter according to claim 1, it is characterized in that described filter housings (1) is by 8 stay bolts, connect filter housings loam cake (6), corresponding 8 circular holes of housing lower cover (7) and position supporting plate (8) thereon, with filter housings loam cake (6), barrel shrond (5), supporting plate (8), housing lower cover (7) links together, on the circle of barrel shrond (5), the following case top lid (6) that is embedded into filter respectively, in the Baltimore groove of supporting plate (8), there is a columniform guide shaft cover (9) in case top lid (6) central authorities, its top is filter outlet pipe (10), side lower part at outlet pipe (10) is equipped with internal pressure pipe (12), one side of case top lid (6) is equipped with external pressure solenoid (11), housing lower cover (7) central authorities are bearing holder (housing, cover) (13), and filter inleting pipe (14) is equipped with in its underpart.
3. filter according to claim 1, it is characterized in that described rotation filter body (2) is to be embedded in the groove of filter body loam cake (17) and lower cover (18) by filter core support (16), and by last, 8 screws of lower cover periphery are connected with 8 bolts and constitute cylindrical shape, filter screen (20) is attached to the outer wall of filter core support (16), the cylindrical outlet pipe (21) of filter core loam cake (17) central authorities embeds in the cylindrical shape guide shaft cover (9) of filter cover (6) central authorities, the cylinder-shaped bearing (22) at filter body lower cover (18) center inserts in the bearing holder (housing, cover) (13) at filter housings lower cover (7) center, constitutes bearing-type and connects.
4. filter according to claim 1 is characterized in that what described impeller blade (19) was made up of 6 three-dimensional twisted blades.
5. filter according to claim 1, the periphery that it is characterized in that described control valve loam cake (25), the secondary pressure shell body (24) of control valve and control valve master pressure shell body (33) all has six screws, be connected on the control valve blowdown housing (34) with six bolts respectively, the periphery of control valve lower cover (32) has six screws, be connected on the control valve blowdown housing (34) with other 6 bolts, the upper end of control valve lower cover (32) is toroidal, and there is sewage draining exit (26) lower end.
6. filter according to claim 1, it is characterized in that described pressure membrane (31) on, in, following trilamellar membrane is the rubber ripple film that adopts the liner gauze, the outer rim of the last film of round pressure film (31) embeds between control valve loam cake (25) and the secondary pressure shell body of control valve (24), the outer rim of the middle film of pressure membrane (31) embeds between secondary pressure shell body (24) of control valve and the control valve master pressure shell body (33), the outer rim of the following film of pressure membrane (31) embeds between control valve master's pressure shell body (33) and the control valve blowdown housing (34), and compress by 6 bolts, on the pressure membrane (31), in, the center of three films of following film has circular hole, control volume bolt (35) passes, in, the center hole of following three films, three films are compressed by being threaded with control head (30) by control volume bolt (35) between any two by two sleeves (27) at interval.
7. filter according to claim 1 is characterized in that the control head (30) in the described batch pressure-differential controlling valve (4) is conical, the circular arc that make with elastic caoutchouc the lower end.
8. filter according to claim 3 is characterized in that the cylindrical shape of described filter core support (16) for hollow out one-tenth " X " word support all around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100246317A CN100518883C (en) | 2007-06-26 | 2007-06-26 | Self-flushing intermittent filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100246317A CN100518883C (en) | 2007-06-26 | 2007-06-26 | Self-flushing intermittent filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101073728A true CN101073728A (en) | 2007-11-21 |
| CN100518883C CN100518883C (en) | 2009-07-29 |
Family
ID=38975098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100246317A Expired - Fee Related CN100518883C (en) | 2007-06-26 | 2007-06-26 | Self-flushing intermittent filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100518883C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320331A (en) * | 2014-10-29 | 2015-01-28 | 湖州高鼎智能科技有限公司 | Plug-in type gateway smart host |
| CN104415589A (en) * | 2013-08-20 | 2015-03-18 | 南通新源特种纤维有限公司 | Washable filter core |
| CN104454272A (en) * | 2014-12-12 | 2015-03-25 | 柳州铁道职业技术学院 | Environment-friendly miniature gasoline filter with washable filter element |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2384664Y (en) * | 1999-07-23 | 2000-06-28 | 河海大学 | Fully automatic backwashing device of filter |
-
2007
- 2007-06-26 CN CNB2007100246317A patent/CN100518883C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104415589A (en) * | 2013-08-20 | 2015-03-18 | 南通新源特种纤维有限公司 | Washable filter core |
| CN104320331A (en) * | 2014-10-29 | 2015-01-28 | 湖州高鼎智能科技有限公司 | Plug-in type gateway smart host |
| CN104454272A (en) * | 2014-12-12 | 2015-03-25 | 柳州铁道职业技术学院 | Environment-friendly miniature gasoline filter with washable filter element |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100518883C (en) | 2009-07-29 |
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