CN102145236A - Filter screen two-level self-cleaning filter - Google Patents
Filter screen two-level self-cleaning filter Download PDFInfo
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- CN102145236A CN102145236A CN 201110033593 CN201110033593A CN102145236A CN 102145236 A CN102145236 A CN 102145236A CN 201110033593 CN201110033593 CN 201110033593 CN 201110033593 A CN201110033593 A CN 201110033593A CN 102145236 A CN102145236 A CN 102145236A
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- cartridge filter
- scraper
- cylindrical shell
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Abstract
The invention discloses a filter screen two-level self-cleaning filter. A filter cylinder capable of rotating is arranged in a cylindrical body; a scraper seat and a scraper are arranged in the cylindrical body, wherein the scraper is connected with the periphery of the scraper seat and in sealed connection with the outer wall of the filter cylinder; the inner cavities of the scraper seat and the scraper are communicated with a second-level sewage drainage port; a first-level sewage drainage port is arranged at the bottom of the cylindrical body; a material inlet and a filtrate outlet are respectively arranged at the middle side part and the upper side part of the cylindrical body; when in use, the filtered solid particles are partially scrapped by the scraper and then fall into the first-level sewage drainage port; a few particles enter the inner cavities of the scraper and the scraper seat; and the back-flushed filtrate can rush out the particles attached inside the filter cylinder and discharge the particles from the second-level sewage drainage port. The filter disclosed by the invention has the advantages of compact structure, large processing quantity, long service life and the like, is stable and reliable in operation, realizes continuous filtering as well as two-level self-cleaning and regeneration of a filter screen, and ensures low operation cost.
Description
Technical field:
The present invention relates to a kind of filter screen secondary Self-cleaning type filter.
Background technology:
In general filter, along with the carrying out of filter process, the solid phase particles in the liquid is trapped within filter element surface, causes that filtration resistance increases, and filter efficiency descends.At this moment generally need to interrupt filter operation, replacing filter element or taking-up are cleaned, and be not only time-consuming but also bothersome, influences treatment effeciency, especially influences the continuous running of whole flow process.
In some fields, as power plant auxiliary machine cooling water, industrial circulating water, fire demand water etc., flow is big, and it is few to contain particle, all is solid, the crystal grain thing of some sandstone classes generally, removes easily.But because flow is big, flow process continues, and does not generally allow intermittently operated.Like this, along with the carrying out of flow process, although particle is few, can pile up gradually on the surface of strainer screen, form filter cake, cause filter screen to stop up, filtration resistance increases, and filters obstructedly, influences normal flow.In this case, just require the filter screen of filter under non-stop-machine prerequisite, to carry out self-cleaning, guarantee the filter screen normal filtration, can self-cleaning regeneration.Could guarantee the continuation of whole flow process like this.
At present, the Self-cleaning type filter plant mainly is by mechanical removal or the liquid filter cake particle that screen surface piles up that recoils under differential pressure action, reaches the self-cleaning filter screen, the purpose that makes it to regenerate.Mechanical removal is as utilizing scraper plate, hairbrush, wire brush, non-metal plate etc.
There is following problem in the removing of these Self-cleaning type filter plants:
1, during mechanical removal, the particle of screen surface generally can obtain removing.But the particle between the filter screen twine can not go deep into can not get removing because of mechanical device.
2, mechanical cleaning device and screen surface can not desirablely fully be fitted after all, and the not tight place of fitting will form particle packing to a certain degree, influences filter efficiency.
3, only utilize the liquid filter screen that under differential pressure action, recoils, can consume a large amount of cleaner liquids of crossing, increase energy consumption.Especially crossing cleaner liquid is expensive liquid, as cutting fluid, will increase cost greatly.
Summary of the invention:
For overcoming the defective of prior art, the object of the present invention is to provide a kind of filter screen secondary Self-cleaning type filter, be applicable to power plant auxiliary machine cooling water, industrial circulating water, fire demand water, cleaning solution, cutting fluid and other similar flow is big, particle is few, the coarse filtration of easy filtering suspension liquid and smart filter.Have continuous filtration, the regeneration of secondary self-cleaning filter screen, compact conformation, steady reliable, the advantages such as treating capacity is big, operating cost is low, long service life of running.
Technical solution problem of the present invention adopts following technical scheme:
A kind of filter screen secondary Self-cleaning type filter is provided with cylindrical shell, and described cylindrical shell bottom is provided with the one-level sewage draining exit, and the cylindrical shell upper lateral part is provided with filtrate (liquid; The top of described cylindrical shell is by end cap seal, and is provided with exhaust outlet on end cap; In described inner barrel bottom sealing, the uncovered cartridge filter in upper end are set, described cartridge filter drives rotation by the power set that are fixedly arranged on the described end cap; Described inner barrel be positioned at described filtrate (liquid below be installed with the branch spacer cylinder lumen be divided into up and down two cavitys, the inner periphery of described minute spacer seals with the excircle of described cartridge filter upper end and is connected rotationally; The sidewall of the cylindrical shell below minute spacer is provided with material inlet; The sidepiece that is positioned at cartridge filter in described cylindrical shell is provided with scrapes tool rest, at the described scraper that is connected with horizontal square frame shape on the tool rest of scraping, fit with the excircle of cartridge filter around one end of described scraper, be connected in around the other end and scrape on the tool rest, the inner chamber of described scraper is communicated with the secondary sewage draining exit with the passage that the inner chamber of scraping tool rest forms sealing; Described secondary sewage draining exit is located on the cylinder lateral wall of described one-level sewage draining exit top.
Design feature of the present invention also is:
In described cylindrical shell, set firmly sliding bearing, described sliding bearing is positioned on the axis of described cartridge filter and locates the cartridge filter below, be installed with the minor axis that inserts in the described sliding bearing in the bottom of cartridge filter, described sliding bearing forms the support of described cartridge filter and location.
Described power set comprise reducer pedestal, reductor and the motor that is fixed on the described end cap, the output shaft of described reductor is connected with major axis by shaft coupling and flat key, described major axis passes the inner chamber that described end cap extends to described cartridge filter, seals between major axis and the end cap; The upper end of described cartridge filter radially is provided with many ribs, and described major axis is on the axis of described cartridge filter and lower end and described rib connect firmly.
Described cylindrical shell is fastened by upper shell and lower shell and constitutes, and the buckling parts of upper shell and lower shell is equipped with big flange, connects, and is provided with big gasket seal between two big flanges by bolt, nut between two big flanges.
Described scrape tool rest comprise the square floor that is installed on the described cylindrical shell, vertically be fixed on the semicanal of the cross section semicircular in shape on the described base plate, vertically be fixed on square shrouding on the base plate, top at described semicanal vertically is fixedly connected with the semicircle shrouding, between the top of the front end of described semicircle shrouding and described square shrouding, be fixedly connected with the mount pad of frame type, boring around the described mount pad is socketed on the described mount pad and by screw around one end of the scraper of described horizontal square frame shape and fixes.
The middle part of described semicanal is installed with the adjusting bolt, inwall correspondence position at lower shell is provided with the adjusting nut that cooperates with described adjusting bolt, described square floor is provided with waist type bolt hole, described adjusting bolt, adjusting nut and waist type bolt hole are regulated the radial displacement of holder in cylindrical shell, promptly regulate around the end of described scraper and the applying tightness between the outer circle wall of cartridge filter.
Described cartridge filter is trapezoidal twine welding by many cross sections and forms tubular structure, has the filtration slit of wedge between the adjacent twine, and the filtration slit small end of described wedge is towards the inner chamber of cartridge filter, and big end outwardly.
Compared with the prior art, beneficial effect of the present invention is embodied in:
The pluses and minuses of the present invention's recoiling device under differential pressure action in conjunction with mechanical cleaning device and liquid, make it to remove most of screen surface particle, can utilize again and cross cleaner liquid on a small quantity, particle and the inner residual particles of filter screen do not removed fully by wing are recoiled totally, make filter screen holomorphosis.Adopt mechanical removal to add the recoil of liquid pressure reduction and remove the secondary self-stripping unit, and this secondary self-stripping unit is organically combined, form the hollow doctor blade device of a compact conformation.On the one hand, can solve the removing dead angle of mechanical cleaning device and the not next problem of taut band of fitting; On the other hand, reduce and only to rely on the liquid mistake cleaner liquid that filter screen brings that under differential pressure action, recoil and expend excessive problem.And the simplification overall structure, make compact conformation, also make its installation, manufacturing, operation and easy to maintenance.
Be nonmetallic materials with scraping the scraper that tool rest is connected among the present invention, generally select for use polytetrafluoroethylene (PTFE) to make.One side plays the sealing function with cartridge filter, plays the effect of striking off the screen surface particle on the other hand.Scraper is horizontal square frame shape, fits tightly with cartridge filter around the one end, and both sides and cartridge filter are contour substantially, and both sides scraped particle all, so turning to of cartridge filter do not required.
Screen pack among the present invention is to be the tube structure that the welding of trapezoidal twine forms by the cross section, and filter area is big, and smooth outer surface helps the removing of particle.The filtration slit that has wedge between the adjacent twine, the filtration slit small end of described wedge be towards the inner chamber of cartridge filter, and big end helps the solid particle that filtrate will filter in the slit and recoils away outwardly.
Cartridge filter among the present invention is by the sliding bearing location and installation, does not adopt any rolling bearing, makes compact conformation, reasonable.
Description of drawings:
Fig. 1 is an overall structure schematic diagram of the present invention; Fig. 2 scrapes the enlarged drawing of tool rest for the present invention; Fig. 3 is the B-B cutaway view of Fig. 2; Fig. 4 is the C-C profile of Fig. 2; Fig. 5 is the A-A profile of Fig. 1; Fig. 6 is that the cartridge filter shown in Fig. 5 is in the schematic diagram under the user mode.
Number in the figure: 1 cylindrical shell, 1-1 upper shell, 1-2 lower shell, the big flange of 1-3, the 1-4 adjusting nut, 2 cartridge filters, 3 end caps, 4 fens spacers, 5 scrape tool rest, 5-1 base plate, 5-2 semicanal, the square shrouding of 5-3,5-4 semicircle shrouding, the 5-5 mount pad, 5-6 regulates bolt, 5-7 waist type bolt hole, 6 scrapers, 7 sliding bearings, 8 minor axises, 9 reducer pedestals, 10 reductors, 11 motors, 12 shaft couplings, 13 flat keys, 14 major axis, 15 ribs, 16 material inlets, 17 filtrate (liquids, 18 secondary sewage draining exits, 19 one-level sewage draining exits, 20 inlet pressure interfaces, 21 outlet pressure interfaces, 22 exhaust outlets.
Below pass through the specific embodiment, and the invention will be further described in conjunction with the accompanying drawings.
The specific embodiment:
Embodiment: shown in Figure 1, the filter of present embodiment, main body is the cylindrical shell 1 that the bottom is provided with one-level sewage draining exit 19, the cylindrical shell upper lateral part is provided with filtrate (liquid 17; The top of cylindrical shell 1 is sealed by end cap 3, and is provided with exhaust outlet 22 on end cap; In specifically being provided with, cylindrical shell 1 is made of upper shell 1-1 and the cooperation of lower shell 1-2 seam, and the auxiliary section of upper shell and lower shell is equipped with big flange 1-3, connects, and is provided with big gasket seal between two big flanges by bolt, nut between two big flanges.Set firmly sliding bearing 7 in the cylindrical shell 1, sliding bearing is positioned on the axis of cartridge filter 2 and locates the cartridge filter below, is installed with the minor axis 8 that inserts in the described sliding bearing in the bottom of cartridge filter, support and location that sliding bearing 7 forms described cartridge filter 2.
The uncovered cartridge filter 2 in upper end of bottom sealing is set in cylindrical shell 1 inside, and cartridge filter 2 drives rotation by the power set that are fixedly arranged on the end cap 3; In specifically being provided with, described power set comprise reducer pedestal 9, reductor 10 and the motor 11 that is fixed on the end cap 3, the output shaft of reductor is connected with major axis 14 by shaft coupling 12 and flat key 13, major axis 14 passes the inner chamber that end cap 3 extends to cartridge filter 2, adopts seal receptacle and packing_seal to seal between major axis and the end cap; In the upper end of cartridge filter along cartridge filter radially be provided with many ribs 15, major axis 14 is on the axis of cartridge filter and the center of lower end and each rib 15 connects firmly, and drives the cartridge filters rotation by major axis 14.
Shown in Figure 1, inner barrel be positioned at filtrate (liquid 17 below be installed with branch spacer 4 cylinder lumen be divided into up and down two cavitys, the inner periphery that divides spacer 4 and the excircle of cartridge filter 2 upper ends can relatively rotate between cartridge filter and the branch spacer with the sealing of O type circle; The sidewall of the cylindrical shell 1 below minute spacer 4 is provided with material inlet 16, and liquid to be filtered enters thus.
Referring to Fig. 1,2, the sidepiece that is positioned at cartridge filter 2 in cylindrical shell 1 is provided with scrapes tool rest 5, at the described scraper 6 that is connected with horizontal square frame shape on the tool rest 5 of scraping, fit with the excircle of cartridge filter around one end of scraper 6, be connected in around the other end and scrape on the tool rest, the inner chamber of described scraper is communicated with secondary sewage draining exit 18 with the passage that the inner chamber of scraping tool rest forms sealing; Described secondary sewage draining exit 18 is located on the cylinder lateral wall of described one-level sewage draining exit top.
Shown in Fig. 2-4, scrape tool rest 5 comprise the square floor 5-1 that is installed in cylindrical shell 1 inner chamber, vertically be fixed on the semicanal 5-2 of the cross section semicircular in shape on the base plate 5-1, vertically be fixed on square shrouding 5-3 on the base plate, vertically be fixedly connected with semicircle shrouding 5-4 on the top of described semicanal 5-2, between the top of the front end of described semicircle shrouding 5-4 and described square shrouding 5-3, be fixedly connected with the mount pad 5-5 of frame type, being socketed on described mount pad 5-5 around the auger shell pit around the described mount pad, an end of the scraper 6 of described horizontal square frame shape goes up and fixes by screw.
In order to regulate gap between scraper 6 and the cartridge filter 2 tightness of promptly fitting, be installed with adjusting bolt 5-6 at the middle part of semicanal 5-2, inwall correspondence position at lower shell 1-2 is provided with the adjusting nut 1-4 that cooperates with described adjusting bolt 5-6, described square floor 5-1 is provided with waist type bolt hole 5-7, described adjusting bolt 5-6, adjusting nut 1-3 and waist type bolt hole 5-7 regulate the radial displacement of holder 5 cylindrical shell 1 in, and the end of promptly regulating described scraper 6 all around and the applying tightness between the outer circle wall of cartridge filter 2.
In specifically being provided with, shown in Figure 5, cartridge filter 2 is trapezoidal twine welding formation tubular structure by many cross sections, the filtration slit that has wedge between the adjacent twine, promptly angle is the wedge shaped filter cavity of α, its minimum of a value m is the filtering accuracy of this cartridge filter, the filtration slit small end of described wedge is towards the inner chamber of cartridge filter 2, the big end outwardly, the particle that helps is therebetween recoiled out, is unlikely being stuck.
In the use, referring to Fig. 1,6, material inlet 16 is provided with inlet pressure interface 20, and filtrate (liquid 17 is provided with outlet pressure interface 21, connects Pressure gauge or other pressure-detecting device respectively, realizes the sampling of pressure samples differential pressure.Mixed liquor to be filtered is in material inlet 16 enters cylindrical shell 1, crossing cleaner liquid under pressure enters in the cartridge filter 2 and leaches from filtrate (liquid 17 then, solid particle be filtered the tube 2 be blocked in outside, rotation along with cartridge filter 2, struck off to fall by scraper 6 attached to the particle of cartridge filter outer wall and enter one-level sewage draining exit 19, the particle that do not struck off of part enters scraper 6 and the sealed cavity scraped between the tool rest 5 enters secondary sewage draining exit 18 by pipeline, when inlet pressure increases, outlet pressure reduces or the pressure differential of inlet pressure and outlet pressure when reaching the value of setting, illustrate on the cartridge filter 2 and formed filter cake, cause filter screen to stop up, filtration resistance increases, filter obstructed, open one-level sewage draining exit 19 this moment earlier, discharge the turbid solution in the cylindrical shell 1, open secondary sewage draining exit 18 according to pressure changing again, scrape the inner chamber of tool rest 5 and scraper 6 and the inner chamber of cartridge filter 2 and form pressure differential, filtrate recoil screen pack in the cartridge filter is gone out the solid particle in surface and the filtration slit, reaches the effect of secondary self-cleaning.In the practical application, one-level sewage draining exit 19 is not got back to normal value yet as the pressure differential pressure after opening and discharging turbid solution, then needs to open secondary sewage draining exit 18, to the screen surface cleaning that further recoils.
Claims (7)
1. filter screen secondary Self-cleaning type filter is characterized in that:
Cylindrical shell (1) is set, and described cylindrical shell (1) bottom is provided with one-level sewage draining exit (19), and the cylindrical shell upper lateral part is provided with filtrate (liquid (17); The top of described cylindrical shell is sealed by end cap (3), and is provided with exhaust outlet (22) on end cap;
The uncovered cartridge filter (2) in upper end of bottom sealing is set in described cylindrical shell (1) inside, and described cartridge filter (2) drives rotation by the power set that are fixedly arranged on the described end cap;
Be installed with branch spacer (4) in the below that described inner barrel is positioned at described filtrate (liquid (17) cylinder lumen be divided into two cavitys up and down, described minute spacer (4) inner periphery seal with the excircle of described cartridge filter (2) upper end and be connected rotationally; The sidewall of the cylindrical shell (1) below a minute spacer (4) is provided with material inlet (16);
The sidepiece that is positioned at cartridge filter (2) in described cylindrical shell (1) is provided with scrapes tool rest (5), at the described scraper (6) that is connected with horizontal square frame shape on the tool rest of scraping, fit with the excircle of cartridge filter around one end of described scraper (6), be connected in around the other end and scrape on the tool rest, the inner chamber of described scraper is communicated with secondary sewage draining exit (18) with the passage that the inner chamber of scraping tool rest forms sealing; Described secondary sewage draining exit (18) is located on the cylinder lateral wall of described one-level sewage draining exit top.
2. a kind of filter screen secondary Self-cleaning type filter according to claim 1, it is characterized in that in described cylindrical shell (1), setting firmly sliding bearing (7), described sliding bearing is positioned on the axis of described cartridge filter (2) and locates the cartridge filter below, be installed with the minor axis (8) that inserts in the described sliding bearing in the bottom of cartridge filter, described sliding bearing (7) forms support and the location to described cartridge filter (2).
3. a kind of filter screen secondary Self-cleaning type filter according to claim 1, it is characterized in that described power set comprise reducer pedestal (9), reductor (10) and the motor (11) that is fixed on the described end cap, the output shaft of described reductor is connected with major axis (14) by shaft coupling (12) and flat key (13), described major axis passes the inner chamber that described end cap (3) extends to described cartridge filter (2), seals between major axis and the end cap; The upper end of described cartridge filter radially is provided with many ribs (15), and described major axis (14) is on the axis of described cartridge filter and lower end and described rib (15) connect firmly.
4. a kind of filter screen secondary Self-cleaning type filter according to claim 1, it is characterized in that described cylindrical shell (1) fastens formation by upper shell (1-1) and lower shell (1-2), the buckling parts of upper shell and lower shell is equipped with big flange (1-3), connect, and be provided with big gasket seal between two big flanges by bolt, nut between two big flanges.
5. a kind of filter screen secondary Self-cleaning type filter according to claim 1, it is characterized in that the described tool rest (5) of scraping comprises the square floor (5-1) that is installed on the described cylindrical shell (1), vertically be fixed on the semicanal (5-2) of the cross section semicircular in shape on the described base plate, vertically be fixed on the square shrouding (5-3) on the base plate, vertically be fixedly connected with semicircle shrouding (5-4) on the top of described semicanal (5-2), between the top of the front end of described semicircle shrouding (5-4) and described square shrouding (5-3), be fixedly connected with the mount pad (5-5) of frame type, boring around the described mount pad (5-5) is socketed on described mount pad (5-5) and goes up and fix by screw around one end of the scraper of described horizontal square frame shape (6).
6. a kind of filter screen secondary Self-cleaning type filter according to claim 5, the middle part that it is characterized in that described semicanal (5-2) is installed with adjusting bolt (5-6), inwall correspondence position at lower shell (1-2) is provided with the adjusting nut (1-4) that cooperates with described adjusting bolt (5-6), described square floor (5-1) is provided with waist type bolt hole (5-7), described adjusting bolt (5-6), adjusting nut (1-4) and waist type bolt hole (5-7) are regulated the radial displacement of holder (5) cylindrical shell (1) in, and the end of promptly regulating described scraper (6) all around and the applying tightness between the outer circle wall of cartridge filter (2).
7. according to the described a kind of filter screen secondary Self-cleaning type filter of arbitrary claim of claim 1-3 or 6, it is characterized in that described cartridge filter (2) is trapezoidal twine welding formation tubular structure by many cross sections, the filtration slit that has wedge between the adjacent twine, the filtration slit small end of described wedge is towards the inner chamber of cartridge filter (2), and big end outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110033593 CN102145236B (en) | 2011-01-30 | 2011-01-30 | Filter screen two-level self-cleaning filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110033593 CN102145236B (en) | 2011-01-30 | 2011-01-30 | Filter screen two-level self-cleaning filter |
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| CN102145236A true CN102145236A (en) | 2011-08-10 |
| CN102145236B CN102145236B (en) | 2013-03-20 |
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| CN 201110033593 Active CN102145236B (en) | 2011-01-30 | 2011-01-30 | Filter screen two-level self-cleaning filter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102716608A (en) * | 2012-06-08 | 2012-10-10 | 温州宇丰化纤机械有限公司 | Automatic back washing carbon fiber filter |
| CN103758353A (en) * | 2014-01-10 | 2014-04-30 | 中国核工业二三建设有限公司 | Method for mounting side seal plates of drum strainer |
| WO2017079856A1 (en) * | 2015-11-09 | 2017-05-18 | 北京瑞宝利热能科技有限公司 | Continuous filtration device for untreated sewage and system having same |
| CN110013711A (en) * | 2019-03-25 | 2019-07-16 | 淮北矿业股份有限公司 | A kind of gas drainage system Slag filter of easy cleaning |
| CN110665283A (en) * | 2019-10-29 | 2020-01-10 | 朱海艳 | Pomace filter equipment is used in fruit juice beverage production |
| CN110905463A (en) * | 2019-11-27 | 2020-03-24 | 天津大港油田圣达科技有限公司 | Pressure-adjustable sewage reinjection device |
| CN114931799A (en) * | 2022-04-26 | 2022-08-23 | 中国轻工业武汉设计工程有限责任公司 | Full-automatic filter of self-loopa suspension |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102716608A (en) * | 2012-06-08 | 2012-10-10 | 温州宇丰化纤机械有限公司 | Automatic back washing carbon fiber filter |
| CN102716608B (en) * | 2012-06-08 | 2014-12-10 | 温州宇丰化纤机械有限公司 | Automatic back washing carbon fiber filter |
| CN103758353A (en) * | 2014-01-10 | 2014-04-30 | 中国核工业二三建设有限公司 | Method for mounting side seal plates of drum strainer |
| CN103758353B (en) * | 2014-01-10 | 2016-03-30 | 中国核工业二三建设有限公司 | Drum type filter screen side seal board mounting method |
| WO2017079856A1 (en) * | 2015-11-09 | 2017-05-18 | 北京瑞宝利热能科技有限公司 | Continuous filtration device for untreated sewage and system having same |
| CN110013711A (en) * | 2019-03-25 | 2019-07-16 | 淮北矿业股份有限公司 | A kind of gas drainage system Slag filter of easy cleaning |
| CN110013711B (en) * | 2019-03-25 | 2024-04-16 | 淮北矿业股份有限公司 | Filter residue device of gas extraction system convenient to clean |
| CN110665283A (en) * | 2019-10-29 | 2020-01-10 | 朱海艳 | Pomace filter equipment is used in fruit juice beverage production |
| CN110905463A (en) * | 2019-11-27 | 2020-03-24 | 天津大港油田圣达科技有限公司 | Pressure-adjustable sewage reinjection device |
| CN114931799A (en) * | 2022-04-26 | 2022-08-23 | 中国轻工业武汉设计工程有限责任公司 | Full-automatic filter of self-loopa suspension |
| CN114931799B (en) * | 2022-04-26 | 2024-04-16 | 中国轻工业武汉设计工程有限责任公司 | Full-automatic filter for self-circulation suspension |
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Effective date of registration: 20140319 Address after: High tech Zone Hefei city Anhui province 230094 Xisi Road No. 9 (electromechanical Industrial Park) Patentee after: Hefei General Environment Control Technology Co., Ltd. Address before: Hefei City, Anhui Province, 230088 Lake Road No. 29 Patentee before: Hefei Universal Machinery Inst. |