CN201558586U - Sand washing filter - Google Patents
Sand washing filter Download PDFInfo
- Publication number
- CN201558586U CN201558586U CN2009202777851U CN200920277785U CN201558586U CN 201558586 U CN201558586 U CN 201558586U CN 2009202777851 U CN2009202777851 U CN 2009202777851U CN 200920277785 U CN200920277785 U CN 200920277785U CN 201558586 U CN201558586 U CN 201558586U
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- sand
- lautertuns
- casting bed
- filter
- tank
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Abstract
The utility model provides a sand washing filter which comprises a filtering tank, a raw water inlet, a water inlet tank, a sand bed, a regeneration water outlet, a sand lifting device and a sand washer, wherein the sand bed is formed by filtering mediums; the water inlet tank penetrates through the filtering tank; the raw water inlet is connected with the water inlet tank; the sand bed is arranged in the filtering tank; the regeneration water outlet is arranged on the upper part of the sand bed; the sand extracting device can do reciprocating movement in the water inlet tank, and is connected with the sand washer; the sand washer is arranged on the upper part of the filtering tank; the filtering mediums of the sand bed are lifted into the sand washer by the sand lifting device; and the filtering mediums enter the filtering tank. The sand washer comprises a heating device. When the oil mediums and the like which are difficult to separate appear, the cleaning can be carried out at normal temperature, or the steam is added to clean, thereby achieving the purpose of impurity separation. The solid particles are separated from the polluted filtering mediums by a settling, sieving or magnetizing method.
Description
Technical field
The utility model relates to a kind of sewage-treatment plant, relates in particular to a kind of sand washing filter that is used for removing sewage suspension or wet goods impurity.
Background technology
The protection environment is a fundamental state policy of China, and water pollution control is the important topic of environmental protection.In the industrial production field, most of sewage needs just can reach discharge standard after treatment.At present, in industrial production, still use the quartz sand filtration device mostly, be about to cobblestone, magnetic iron ore and the thickness different quartz sand layering in footpath and directly be contained in the shell of tubular, make effluent stream out-of-date, dirt is stopped by quartz sand, water is passed through, can sewage disposal is clean.
But this filter life cycle of prior art is short, just needs cleaning once after a while, the dirt removal of staying in the filter is fallen, could continue again to dispose of sewage, when removing dirt, need stop to filter, promptly filter and clear up dirt and can not carry out simultaneously.The filtrate of this filter hardens easily on the other hand, promptly dirt easily and filtrate bond together, very difficult dirt removal is fallen by cleaning, the regeneration effect of filtrate is bad, filter effect is just very poor when re-using it and disposing of sewage.Adopt general backwash mode more on the one hand when cleaning, filtrate is washed out easily, therefore will constantly add filtrate.When having the impurity that contains the difficult separation of wet goods to occur in the sewage, filtrate is easy to contaminated, and the effect of filtration will reduce greatly.
The utility model content
The purpose of this utility model is to provide a kind of sand washing filter, and the above-mentioned deficiency of existing filter is improved, and improves the effect of filtering greatly, has reduced cost, removes impurity well.
The purpose of this utility model is achieved through the following technical solutions:
A kind of sand washing filter comprises lautertuns, former water inlet, goes into tank, casting bed, recycled water outlet, carries sand device and sand-washing device, and wherein said casting bed is made up of filter medium; It is characterized in that: describedly go into tank and run through described lautertuns, described former water inlet is gone into tank and is connected with described, described casting bed is positioned at described lautertuns, described recycled water outlet is positioned at described casting bed top, the described sand device of carrying can be gone into tank and moves back and forth and link to each other with described sand-washing device described, and described sand-washing device is arranged on the top of described lautertuns; The described sand device of carrying is promoted to described sand beds medium in the described sand-washing device, and after described sand-washing device cleaned, filter medium entered in the described lautertuns once more.
Above-mentioned purpose can also be further perfect by following technical proposals.
Described sand-washing device comprises heater.
In the altitude range of described casting bed, the sidewall of described lautertuns is provided with a plurality of transparent observation windows.
The top of described lautertuns is provided with the lautertuns obturator, to satisfy environmental protection requirement; Adopt removable the connection between described lautertuns obturator and the described lautertuns, so that examination and maintenance.
Whole casting bed of the present utility model static relatively on cross section (be actually and be recycled cleaning) can use lower casting bed.Compare when filter capacity is identical with existing filter, casting bed of the present utility model only need have half height of filter casting bed now, and this can effectively prevent explosion.The reduction of sand-bed height can make the circulation timei of filter medium shorter, only is equivalent to half of existing filter, and this has reduced because bacteria breed and the risk of blocking filter.Like this, filter whole height of the present utility model also will inevitably significantly reduce, thereby reduces cost greatly.In addition, the sand-washing device of the utility model filter comprises heater, and when containing the difficult impurity that separates of wet goods and occur, cleaning can be carried out under non-normal temperature (often being high temperature), or additional steam carries out, to reach the purpose that impurity separates.By precipitation, screening, or magnetizing method separates solid particle from contaminated filter medium, so the utility model filter also is applicable to suspension or the emulsion of handling particular type, as contain the liquid of suspension metallic particles.
Description of drawings
Fig. 1 is the vertical view of the sand washing filter of the utility model embodiment;
Fig. 2 is the A-A cutaway view of the filter shown in Figure 1 of the utility model embodiment;
Fig. 3 is the B-B cutaway view of the filter shown in Figure 1 of the utility model embodiment;
Fig. 4 is the schematic diagram of the sand-washing device of the utility model embodiment;
Fig. 5 is the side cross-sectional schematic that the doctor blade device of the utility model embodiment is wipeed the casting bed process off.
Reference numeral is as follows:
1 lautertuns: 11 regeneration water layers, 12 delivery ports, 13 rhones, 14 sewage effluents;
2 former water inlets;
3 go into tank: 31 bifurcateds, 32 former water delivery ports, 33 gaps;
4 casting beds: 41 roof shape long slabs;
The outlet of 5 recycled waters;
6 carry the sand device: 61 sand extraction tubes;
7 mobile devices;
8 sand-washing devices: 83 times sand launder 84 outlets of sewer of 81 screw rods, 82 washed-out sand grooves;
9 doctor blade devices: 91,92 scrapers 93,94 connect blade 95 fixators 96 connecting rods.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, sand washing filter of the present utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explain the utility model, is not that it is limited.
As Fig. 1, Fig. 2 and shown in Figure 3, a kind of sand washing filter for the utility model embodiment as a kind of embodiment, comprises lautertuns 1, former water inlet 2 is gone into tank 3, casting bed 4, recycled water outlet 5 is carried sand device 6, mobile device 7 and sand-washing device 8.
Wherein, preferably, as a kind of embodiment, the outline of lautertuns 1 adopts rectangle structure, and the cross section of lautertuns 1 lower side is two " V " shapes.The outline of lautertuns 1 adopts rectangle structure, and processing technology is simple during fabrication, volume big and can make the space obtain better utilization.
As a kind of embodiment, preferably, describedly go into tank 3 and be long and narrow structure, run through total length at the center of the length direction upper edge of lautertuns 1 lautertuns 1, lautertuns 1 is divided into two parts, filter medium forms casting bed 4 in these two parts of lautertuns 1.Preferably, the length of casting bed 4 on level is far longer than its height.Be provided with the delivery port 12 of lautertuns 1 above casting bed 4, be provided with above the sidewall of lautertuns 1 along the rhone 13 of the length direction of whole lautertuns 1, rhone 13 links to each other with the sewage effluent 14 that stretches out lautertuns 1.
Former water (suspension or emulsion) is gone into tank 3 through former water inlet 2, and most of former water flows into casting bed 4 by former water delivery port 32, and a small amount of former water flows into casting bed 4 by gap 33; Obtain filtering owing to the pressure of going into the former water of tank 3 makes lautertuns 1 interior former water be upward through casting bed 4, on casting bed 4, form a clean regeneration water layer 11.Being former water (suspension or emulsion) enters casting bed 4 at lautertuns 1 near the position of bottom minimum point, and former water is upward through casting bed 4 and obtains filtering.Recycled water is discharged by delivery port 12 and recycled water outlet 5.
Wherein, heavier particle and mud directly are deposited in the bottom of lautertuns 1 by gap 33 in the former water, remove with contaminated filter medium, form and stop up and can not enter casting bed 4.With respect to existing filter, heavy particle or be deposited in the delivery port with low flow velocity, or be deposited in the casting bed with high flow rate, stop up thereby form.
When former water (suspension or emulsion) when entering the sand washing filter, go into the pressure that tank 3 can also be alleviated change.Owing to go into very slow that the liquid level of tank 3 rises, so pressure can not rise suddenly, and the influence that can the former water of balance (suspension or emulsion) break-make causes has avoided casting bed to rise and the problem of filter explosion like this.
Connect owing to go into the top and atmosphere of tank 3,, make gas not be brought into casting bed so the gas that flows in the former water (suspension or emulsion) can upwards enter atmosphere.Compared with prior art, so just saved the process of from casting bed, removing the complexity of gas.
In the prior art, can before filtration, handle former water by chemical precipitation.When chemical precipitation was directly carried out in the sand washing filter, filter of the present utility model can provide it is mixed and reaction.When the fluid temperature of handling was on the low side, certain time of contact was particularly important.The narrow structure of going into tank 3 has enough volumes, therefore provides certain time of contact, is enough to make it to mix and reaction.The inlet of existing filter does not have enough volumes, therefore under cryogenic conditions, can't provide enough times of contact.
Preferably, the delivery port 12 of lautertuns 1 adopts the shape on weir.
Preferably, casting bed 4 can also be provided with roof shape long slab 41, and roof shape long slab 41 is arranged on the below of former water delivery port 32.Roof shape long slab 41 has reduced the risk of stopping up former water delivery port 32 and has guaranteed that former water (suspension or emulsion) does not flow downward but is upward through filter medium on the whole casting bed.
As embodiment, lautertuns 1 also can adopt other structure.Preferably, as another kind of embodiment, the outline of lautertuns also can adopt the oblate spheroid structure, be that bottom surface, front and back are rectangle, and two sides are the convex surface arc, like this, both helped discharging and mobile, can increase space availability ratio again, and be fit to use under the varying environment.
As a kind of embodiment, go into tank 3 and also can penetrate filter pocket 1 along a sidewall of lautertuns 1, lautertuns 1 just becomes a filter space like this.
In conjunction with Fig. 3, how to illustrate that the contaminated filter medium of sand washing filter to present embodiment purifies and other processing.
Sand-washing device 8 is fixed on the mobile device 7 and with mobile device 7 and moves back and forth.Contaminated filter medium is carried sand device 6 and is submitted in the sand-washing device 8, and contaminated like this filter medium is just removed from casting bed 4 automatically.Contaminated filter medium cleans in sand-washing device 8, can fully contact with air and filter medium circulation very fast, suppressed growing of anaerobic bacteria on the casting bed 4, reduced owing to anaerobic bacteria grows the risk that results in blockage in a large number on casting bed 4.
As shown in Figure 4, sand-washing device 8 comprises screw rod 81, and washed-out sand groove 82 returns sand launder 83 and outlet of sewer 84; Wherein, washed-out sand groove 82 is obliquely installed, and screw rod 81 is arranged in the washed-out sand groove 82 and can rotates with respect to washed-out sand groove 82; Return sand launder 83 washed-out sand groove 82 upper ends are connected with lautertuns 1, washed-out sand groove 82 lower ends link to each other with outlet of sewer 84.
Screw rod 81 rotations are sent to washed-out sand groove 82 upper ends with contaminated filter medium from washed-out sand groove 82 lower ends, backwash water enters through the upper end of water pipe (not shown) from screw rod 81 simultaneously, flow downward through screw rod 81 then, clean contaminated filter medium, the sewage that forms flows out through rhone 13 and sewage effluent 14 through the outlet of sewer 84 of screw rod 81 lower ends at last, because rhone 13 is arranged along the length direction of whole lautertuns 1, though so outlet of sewer 84 and mobile device 7 move together, sewage also can be discharged continuously.Contaminated filter medium obtains cleaning in transport process, and impurity breaks away from contaminated filter medium and enters in the backwash water.Be sent to the upper end of screw rod 81 and, formed the clean cycle of filter medium by the filter medium of cleaning by going back to the top that sand launder 83 returns casting bed 4.
Preferably, carry sand device 6 and comprise sand extraction tube 61 and pneumatics pump (not shown); The upper end of sand extraction tube 61 is inserted into the lower end of washed-out sand groove 82, and the lower end of sand extraction tube 61 extends to be lower than into the position of the former water delivery port 32 of tank 3 and at vertical and horizontal all good toughness; The pneumatics pump links to each other by conduit with sand extraction tube 61 bottoms and a little higher than sand extraction tube 61 mouths of pipe of this conduit mouth of pipe.
When carrying sand device 6 along with mobile device 7 reciprocating motions, a large amount of gases at high pressure that the pneumatics pump produces enter in the sand extraction tube 61 by conduit and are forced to flow upward, drive the mixture of contaminated filter medium and other former water and impurity simultaneously, they are submitted sand-washing device 8 (lower end of washed-out sand groove 82).Be that contaminated filter medium enters casting bed 4 lower positions from one than former water by sand extraction tube 61 and upwards submits to sand-washing device 8 (lower end of washed-out sand groove 82).Because a little higher than sand extraction tube 61 mouths of pipe of the conduit mouth of pipe, so do not have a large amount of gas losses outside sand extraction tube 61.In this process, the mixture of contaminated filter medium and other impurity and a small amount of former water enters into the lower end of sand extraction tube 61, outwards the expand bifurcated 31 of this position of extruding of the lower end of sand extraction tube 61 is partially closed the former water delivery port 32 on the bifurcated 31 of this position internally; Because outwards expand in the lower end of sand extraction tube 61 and the effect of former water pressure, bifurcated 31 also outwards expands, cause roof shape long slab 41 to push mutually with bifurcated 31, the former water delivery port 32 on the bifurcated 31 of this position is partially closed from the outside, promptly the former water delivery port 32 of this position is partially closed.Reduced the risk of stopping up former water delivery port 32 like this, because when sand extraction tube 61 certain position of process, the former water of this position reduces, because the pressure of lautertuns 1 bottom can make filter medium or former water oppositely enter into former water delivery port 32, stops up thereby form.
Must all there be good toughness the bottom of sand extraction tube 61 at vertical and horizontal, keeps stable so that go into the amount of tank 3 medium sands and mud.Mobile device 7 moves reciprocatingly, move along the sand mud layer in the bottom of the sand extraction tube 61 that links to each other with the pneumatics pump, the sand mud layer is drawn onto sand-washing device 8, and contaminated like this filter medium is just submitted by the length direction from casting bed 4 bottoms along whole lautertuns 1, can handle all filter mediums.
In above-mentioned pneumatics pump, superfluous gas is also gone into tank 3 in the end outflow of pump directly derives, and rises to former water (suspension or emulsion) surface then, can not cause any adverse effect.Existing filter, gas enters casting bed, must remove gas with special device in addition.
In high-rate fitration or when filtering the suspension of special thickness, the high pressure of generation will produce casting bed " suspension " and the risk that forms vault in the bottom of lautertuns 1 is arranged.In this case, filter medium will can not enter sand extraction tube 61, have only former water (suspension or emulsion) to enter, and casting bed 4 is very soon with blocked like this.This situation can provide temporary transient pressure balance to solve by being submitted the position at quilt.In an optional embodiment in the utility model, preferably, the sealing device of half-open or full cut-off is arranged on the sand extraction tube 61, sealing device can the former water delivery port of closed portion.Preferably, sealing device can only be made up of a swash plate on the sand extraction tube 61, and this swash plate just in time covers former water delivery port.
Sealing device also can be installed in the tank 3, when sand extraction tube 61 when going into tank 3 relative motions, sealing device can be connected in many ways with pneumatics pump movably.The pneumatics pump moves reciprocatingly by on the casting bed during position with mobile device 7, cover the former water delivery port of this position at this position seals device, making does not have former water (suspension or emulsion) to flow to casting bed 4, and this partial pressure can be temporary transient stable, and the vault of formation can be eliminated automatically.
Preferably, sand-washing device 8 also comprises heater.When containing the difficult impurity of removing of wet goods in the contaminated filter medium, it is particularly important that this device seems.Heater can only be made up of the heating plate of putting on sand-washing device 8, also can feed steam in sand-washing device 8.Should be appreciated that specific embodiment described herein only in order to explain the utility model, is not that it is limited.
Preferably, clean in the process of contaminated filter medium, can in backwash water, add chemical agent and improve cleaning performance at sand-washing device 8.
Preferably, sand-washing device 8 comprises a plurality of offset screw rod 81, the inwall of the washed-out sand groove 82 that matches with screw rod 81 than screw rod 81 more greatly, the inwall of screw rod 81 outers and washed-out sand groove 82 just has the slit like this, thereby the part of the filter medium that is cleaned can recycle, and is equivalent to clean the longer time.
Preferably, backwash water is joined in the washed-out sand groove 82 being lower than screw rod 81 the highest delivering positions slightly.Like this, before getting back to lautertuns 1, there is the regular hour to dewater through the filter medium after cleaning.
Preferably, join the zone at former moisture level sensor is set, regulate the air demand of pneumatics pump and the rotating speed of sand-washing device screw rod 81, thereby realize the automatic control of washed-out sand speed according to the loss of flood peak that level sensor records.
Preferably, the sand washing filter of the utility model embodiment also comprises doctor blade device 9, and it can keep the smooth of casting bed 4.The former water (suspension or emulsion) that is filtered all can be contacted with filter medium in being upward through the whole process of casting bed 4, avoided the casting bed short risk, and improved the efficient of filter.Doctor blade device 9 comprises two scrapers 91 and 92, and what fixator 95, fixator 95 ends were provided with downward extension connects blade 93 and 94 and connecting rod 96; Wherein, two scrapers 91 and 92 are installed in the inboard that connects blade 93 and 94 by rotating shaft.Doctor blade device 9 is fixedly mounted in the regeneration water layer 11 by connecting rod 96 with mobile device 7, and the height of doctor blade device 9 makes scraper 91 and 92 can touch the upper surface of casting bed 4.
As shown in Figure 5, when doctor blade device 9 moved with the direction of arrow, scraper 91 was also with same direction motion.Scraper 91 can rotate backward in the motion, drags along casting bed 4 surfaces and can not do any processing to the filter medium of casting bed 4; Scraper 92 is connect blade 94 to be stoped, and can't rotate backward, and forces scraper 92 that casting bed 4 is wipeed off.When doctor blade device 9 towards the motion of the rightabout of arrow, also with same direction motion, scraper 92 can rotate backward scraper 92 in the motion, drags along casting bed 4 surfaces and can not do any processing to the filter medium of casting bed 4; Scraper 91 is connect blade 93 to be stoped, and can't rotate backward, and forces scraper 91 that casting bed 4 is wipeed off.
Preferably, the top of lautertuns 1 is provided with the lautertuns obturator, and this lautertuns obturator adopts removable connection, has both reduced the pollution to environment, can check easily and plant maintenance again.
Preferably, in the altitude range of casting bed 4, the sidewall of lautertuns 1 is provided with a plurality of transparent observation windows, can recognize the casting bed internal state at any time by observation window.
Preferably, the power of each element of sand washing filter of the present utility model or the material that adopted dispose accordingly according to former water that is filtered and the filter medium and other concrete condition that are mated use.
Should be noted that at last that obviously those skilled in the art can carry out various changes and modification to the utility model and not break away from marrow of the present utility model and scope.Like this, if of the present utility model these revise and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also comprises these changes and modification.
Claims (10)
1. sand washing filter comprises lautertuns (1), former water inlet (2), goes into tank (3), casting bed (4), recycled water outlet (5), carries sand device (6) and sand-washing device (8), and wherein said casting bed (4) is made up of filter medium; It is characterized in that: describedly go into tank (3) and run through described lautertuns (1), described former water inlet (2) is gone into tank (3) and is connected with described, described casting bed (4) is positioned at described lautertuns (1), described recycled water outlet (5) is positioned at described casting bed (4) top, the described sand device (6) of carrying can be gone into tank (3) and moves back and forth and link to each other with described sand-washing device (8) described, and described sand-washing device (8) is arranged on the top of described lautertuns (1); The described sand device (6) of carrying is promoted to described casting bed (4) filter medium in the described sand-washing device (8), and after described sand-washing device (8) cleaned, filter medium entered in the described lautertuns (1) once more.
2. filter according to claim 1 is characterized in that:
Described sand-washing device (8) comprises heater.
3. filter according to claim 1 is characterized in that:
In the altitude range of described casting bed (4), the sidewall of described lautertuns (1) is provided with a plurality of transparent observation windows.
4. filter according to claim 1 is characterized in that:
The top of described lautertuns (1) is provided with the lautertuns obturator, and being connected between described lautertuns obturator and the described lautertuns is removable connection.
5. filter according to claim 1 is characterized in that:
The described bottom of going into tank (3) has a plurality of former water delivery ports (32); The described sand device (6) of carrying comprises sand extraction tube (61); One end of described sand extraction tube (61) is connected with described sand-washing device (8), and the other end extends to the position that is lower than described former water delivery port (32).
6. according to the described filter of arbitrary claim among the claim 1-5, it is characterized in that:
Described sand-washing device (8) comprises screw rod (81), and washed-out sand groove (82) returns sand launder (83) and outlet of sewer (84); Wherein, described washed-out sand groove (82) is obliquely installed, and described screw rod (81) is arranged in the described washed-out sand groove (82) and can rotates with respect to described washed-out sand groove (82); Described time sand launder (83) is connected described washed-out sand groove (82) upper end with described lautertuns (1), described washed-out sand groove (82) lower end links to each other with described outlet of sewer (84).
7. filter according to claim 1 is characterized in that:
Described filter also comprises mobile device (7), describedly carries sand device (6) and described sand-washing device (8) is fixed on the described mobile device (7), and described mobile device (7) drives described propose sand device (6) and described sand-washing device (8) reciprocating motion
8. filter according to claim 1 is characterized in that:
Described filter also comprises doctor blade device (9), and described doctor blade device (9) is fixedly mounted on described casting bed (4) top and can touches the upper surface of described casting bed (4).
9. filter according to claim 5 is characterized in that:
Horizontal direction at described lautertuns (1) is positioned on the height of described former water delivery port (32), forms former moisture and joins the zone; Join the zone at described former moisture level sensor is set, control the air demand of described pneumatics pump and the rotating speed of described screw rod (81) according to described level sensor.
10. filter according to claim 5 is characterized in that:
Described casting bed (4) also comprises roof shape long slab (41), and described roof shape long slab (41) is arranged on the below of described former water delivery port (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202777851U CN201558586U (en) | 2009-12-14 | 2009-12-14 | Sand washing filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202777851U CN201558586U (en) | 2009-12-14 | 2009-12-14 | Sand washing filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201558586U true CN201558586U (en) | 2010-08-25 |
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ID=42623732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202777851U Expired - Lifetime CN201558586U (en) | 2009-12-14 | 2009-12-14 | Sand washing filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN201558586U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583627A (en) * | 2012-02-24 | 2012-07-18 | 重庆康达环保产业（集团）有限公司 | Active coke extracting and backwashing device used for sewage advanced treatment |
| CN105920889A (en) * | 2016-06-24 | 2016-09-07 | 江苏尚昆生物设备有限公司 | Filter |
| CN109985426A (en) * | 2017-12-29 | 2019-07-09 | 陈妤柔 | Brush holder support formula filter device |
| CN113921152A (en) * | 2021-09-27 | 2022-01-11 | 中国船舶重工集团公司第七一九研究所 | Containment pressure relief and exhaust activity monitoring system |
-
2009
- 2009-12-14 CN CN2009202777851U patent/CN201558586U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583627A (en) * | 2012-02-24 | 2012-07-18 | 重庆康达环保产业（集团）有限公司 | Active coke extracting and backwashing device used for sewage advanced treatment |
| CN105920889A (en) * | 2016-06-24 | 2016-09-07 | 江苏尚昆生物设备有限公司 | Filter |
| CN109985426A (en) * | 2017-12-29 | 2019-07-09 | 陈妤柔 | Brush holder support formula filter device |
| CN113921152A (en) * | 2021-09-27 | 2022-01-11 | 中国船舶重工集团公司第七一九研究所 | Containment pressure relief and exhaust activity monitoring system |
| CN113921152B (en) * | 2021-09-27 | 2023-12-22 | 中国船舶重工集团公司第七一九研究所 | Safety shell pressure relief exhaust activity monitoring system |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING HUAYANBANG SCIENCE + TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WU YONGSHENG Effective date: 20150619 Free format text: FORMER OWNER: WU XIAOLAN Effective date: 20150619 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150619 Address after: 100101 Beijing Chaoyang District Beichen Road No. 8 Huixin apartment 1603 room Patentee after: beijing hua yan bang science & technology co., ltd. Address before: 100029 Beijing forest in Chaoyang District city Cuixi 24 floor, 2 Door No. 502 Patentee before: Wu Yongsheng Patentee before: Wu Xiaolan |
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| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 100192, B, B1007, fortune 8, science and technology center, No. Xue Qing Road, Beijing Patentee after: BEIJING LIDEQING TECHNOLOGY CO., LTD. Address before: 100101 Beijing Chaoyang District Beichen Road No. 8 Huixin apartment 1603 room Patentee before: beijing hua yan bang science & technology co., ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20100825 |
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| CX01 | Expiry of patent term |