CN202961990U - Purge device used for rhombus-shaped scraper plate mud-absorbing system - Google Patents
Purge device used for rhombus-shaped scraper plate mud-absorbing system Download PDFInfo
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- CN202961990U CN202961990U CN 201220231355 CN201220231355U CN202961990U CN 202961990 U CN202961990 U CN 202961990U CN 201220231355 CN201220231355 CN 201220231355 CN 201220231355 U CN201220231355 U CN 201220231355U CN 202961990 U CN202961990 U CN 202961990U
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- mud
- scraper plate
- purge
- rhombus
- blow device
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- Expired - Lifetime
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- 238000010926 purge Methods 0.000 title claims abstract description 41
- 238000005273 aeration Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000000746 purification Methods 0.000 claims abstract description 7
- 230000037452 priming Effects 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000010865 sewage Substances 0.000 abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 13
- 238000004062 sedimentation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000002000 scavenging effect Effects 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 206010033799 Paralysis Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000035929 gnawing Effects 0.000 description 2
- LLPOLZWFYMWNKH-CMKMFDCUSA-N hydrocodone Chemical compound C([C@H]1[C@H](N(CC[C@@]112)C)C3)CC(=O)[C@@H]1OC1=C2C3=CC=C1OC LLPOLZWFYMWNKH-CMKMFDCUSA-N 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
Images
Abstract
The utility model relates to the sewage treatment technical field, and specifically relates to a purge device used for a rhombus-shaped scraper plate mud-absorbing system of a water purification system in the aluminium electrolytic industry. The purge device comprises purge aeration pipes, pneumatic air pipes and purge holes on the pneumatic air pipes. The introducing pneumatic air pipes are introduced above mud-absorbing nozzles along a work bridge through a fixing support. The input end of each pneumatic air pipe is connected with pneumatic wind in an aeration tank in a water purification station or a self-assembling miniature air compressor, and the out end of each pneumatic air pipe is connected with the purge aeration pipes fixedly arranged at two sides of the mud-absorbing nozzles. The purge device used for the rhombus-shaped scraper plate mud-absorbing system is simple in structure, low in investment and low in cost, is easy to mount and manufacture, allows smoothness of sewage treatment to be guaranteed, and enables the labor intensity of operation workers to be reduced.
Description
Technical field
The utility model relates to technical field of sewage, specifically relates to a kind of blow device of inhaling the mud system for aluminium electroloysis industry water cleaning systems rhombus scraper plate.
Background technology
The truss-like suction dredge is mainly used in the spoil disposal of horizontal sedimentation tank in water supply and sewage work, inhales the mud mode according to user's requirement, has three kinds of hydrocone type, pump suction type and pump rainbow two suctions etc. available.Hydrocone type adopts immersible pump water distribution emitter or vavuum pump to form siphon, utilizes the liquid level difference spoil disposal in sedimentation basin and mud drainage slot, and pump suction type directly adopts submersible sewage pump to extract precipitating sludge.
The characteristics of truss-like suction dredge:
(1) truss-like suction dredge transmission device adopts shaft assembled speed reducer or flange direct-connection type reductor, and profile is exquisite, easy accessibility.
(2) drive wheel with automatic deviation rectifying function, can guarantee that the suction dredge long distance running is without gnawing rail, climbing the rail phenomenon.
(3) inhale the mud system and can establish back purge system, to get rid of the accident such as pipeline blockage.
(4) pump suction type or pump rainbow two suctions adopt without stopping up submersible sewage pump, start the velocity of sound, need not priming device, simple and convenient operation and maintenance.Submersible sewage pump with inhale the mud system and connect uniqueness, do not stop the pond and discharge water and can overhaul or change submersible sewage pump.
(5) the truss-like suction dredge can adopt PLC to control, and designs as required whole process, the half way method of operation of suction dredge.
(6) but siphon mud machine Guan Shangke establishes unique sludge volume adjusting device, can automatically adjust mud volume according to sediment.
The Qinghai Branch water purification station adopts siphon suction dredge to carry out regulating reservoir mud spoil disposal at present.Siphon suction dredge is a kind of soil discharging facility that is arranged on the rectangle horizontal sedimentation tank.Suction dredge mainly is comprised of service bridge, drive unit, dredging tube and mud-suction nozzle, siphoning installation (comprising vavuum pump), discharge pipeline, end carriage electric control system, cable and hanger, track and annex etc.This machine is provided with the fixed platform across sedimentation basin, and the precipitate in sewage is at the bottom of the pond time, and suction dredge back and forth slowly walks in the pond by the both sides drive unit, utilizes simultaneously siphon to cause vacuum, then will be deposited in pool bottom sludge by sludge drainage system and discharge.This machine is simple in structure, stable drive, and operating cost is low, inhales mud respond well, is a kind of desirable soil discharging facility.
The primary structure of siphon suction dredge:
(1) girder is made overall structure with section bar, and enough Rigidity and strengths are arranged, and lays steel lattice walkway board on bridge, and its load is at least apart from the power of bearing 50kg/m2.Three of bridge arrange railing, and one side is established cat ladder and handrail, and the width of walkway of bridge is 1.0m.
(2) drive unit adopts two outdoor type reductor both sides driven in synchronism.The equilibrium of principal and subordinate's motor car wheel four-wheel rail, smooth running.Drive disk assembly is lubricated good, can transmit power demand and moment of torsion under various operating modes, can continuous operation under worst condition.Drive wheel with automatic deviation rectifying function, to guarantee that the suction dredge long distance running is without gnawing rail, climbing the phenomenon such as rail; The rail two ends arrange safety position limiter and arresting stop.
(3) dredging tube road system is comprised of discharge pipeline, dredging tube, mud-suction nozzle.Discharge pipeline one end is connected with flat mud suction mouth at the bottom of the pond, and establishes the type steel support of del; The other end is crossed over the sedimentation basin outer wall to mud drainage slot.System band back purge system in dredging tube road is with fortuitous events such as eliminating pipeline blockage; The sludge volume adjusting device is set on dredging tube, can automatically regulates sludge volume according to sediment.
(4) inhale the mud system and adopt the rhombus scraper plate, with dredging tube axis angle at 45 °, be arranged in flat suction inlet both sides, mud-sucking device is welded on respectively the main fine strain of millet downside of combination, and every group of scraper stent is comprised of two isosceles triangles.
(5) siphoning installation of suction dredge is comprised of vavuum pump, magnetic valve and pipeline, vacuum system is installed on service bridge, starting vavuum pump when initial spoil disposal extracts spoil disposal pipeline Air out, utilize the liquid level difference in sedimentation basin and mud drainage slot to realize the spoil disposal function, cut off the power supply to magnetic valve, this is that the other end of magnetic valve enters air and destroys siphon, inhales mud and stops.
(6) electrical apparatus control system: every suction dredge is joined an electric cabinet control cabinet and is arranged on the service bridge of suction dredge, possess " motor leaves, guard's valve, open, stop, malfunction indicator lamp " and operation function thereof, " manually/PLC " change-over switch and operation function thereof; Can accept demanding party's PLC control system and open/stop the input interface of controlling; " operation, resultant fault and manual/auto " passive output interface of switching value is to the PLC of demanding party control system; Control and adopt the PLC programmable controller, manual, automatic control on the spot.
The problem and the harm that exist: we find that in debugging and running mainly there is following problem in this complete equipment:
When (1) the sewage clay content is larger, mud is deposited in the mud-suction nozzle place and makes suction dredge inhale the mud amount obviously to reduce, cause the overstand of mud in the pond, cause water quality deterioration, make and reconcile clay content increase in the pond, directly have influence on the normal operation of water cleaning systems subsequent technique, even cause inhaling mud equipment and stop up paralysis, cause the water cleaning systems forced outage;
(2) dredging tube is difficult to again dredging after very easily stopping up and in a single day stopping up, a mud pipe is if there is obstruction, will cause vicious circle, cause other mud pipes also progressively to stop up, make suction dredge thoroughly lose the spoil disposal function, being in operation all just situations of dredging of a mud blockage afterflush two just once occurred;
(3) the siphonic system magnetic valve easily sucks the impurity in sewage, causes spool gas leakage, causes siphon to last length, siphon forms rear operation a period of time and can automatically destroy again, and stable equipment operation is relatively poor, is difficult to management, after siphon stops automatically, easily stop up the mud pipe;
When (4) inhaling mud driving operation winter, cause in the short time because temperature is low after magnetic valve and vavuum pump start and freeze, can't work.
The siphon suction dredge operation utilizes siphon mode to carry out spoil disposal, in running, system is directed to mud-suction nozzle to mud by the rhombus cleaning shoe by suction mud, utilizes the water-head between regulating reservoir and mud groove to form siphon, the mud that sucks combines in the mud groove, by the mud groove, mud is discharged to the sedimentation basin precipitation.It is very unimpeded that technological process seems, but in fact, in siphon spoil disposal running, owing to containing the impact of the other factorses such as other impurity in the variation of sewage clay content size and water, suction dredge often can occur mud-suction nozzle by mud stuck (at the bottom of mud-suction nozzle and pond, distance 50-100mm) causes suction dredge to walk, as untimely fix a breakdown finally to cause inhale the paralysis of mud equipment; Indivedual mud-suction nozzles stop up to cause inhales obviously deficiency of mud amount, and long-play causes the operation conditions of equipment to worsen; Suction dredge often occurs that dredging tube very easily stops up, the siphonic system magnetic valve easily sucks the phenomenons such as impurity in sewage, siphon stop automatically, gives to inhale the mud operation and bring difficulty normally, has had a strong impact on the normal technique of sewage disposal system unimpeded.
Summary of the invention
The technical problems to be solved in the utility model is the deficiency that exists for prior art, and a kind of optimization suction dredge equipment performance is provided, and improves suction dredge spoil disposal efficient, ensures the blow device that is used for rhombus scraper plate suction mud system that sewage spoil disposal technique is unimpeded.
a kind of blow device of inhaling the mud system for the rhombus scraper plate of the utility model is achieved by following technical proposals: a kind of blow device of inhaling the mud system for the rhombus scraper plate comprises the girder parts, introduce the pneumatics airduct, pneumatics wind introducing port, the end carriage parts, light rail, mud-suction nozzle, blow device, water receiving tank, priming device, described blow device comprises the purging aeration tube, introduce the pneumatics airduct and be arranged on the purge hole that purges on aeration tube, described introducing pneumatics airduct causes on mud-suction nozzle top along service bridge by fixed support, its input is connected with water purification station aeration tank pneumatics wind or self-chambering small-sized air compressor, output is connected with the purging aeration tube that is fixedly mounted on mud-suction nozzle two inboards.
a kind of blow device of inhaling the mud system for the rhombus scraper plate of the utility model has following beneficial effect compared with prior art: a kind of blow device of inhaling the mud system for the rhombus scraper plate of the utility model has increased the purging aeration tube in two inboards of original mud-suction nozzle, and be on 45 tube walls of spending, purge hole to be set purging aeration tube downside and horizontal direction angle, during use, compressed air introduce is purged and blow afloat respectively horizontal sedimentation tank both sides settled sludge in water supply and sewage work when aeration tube inherent purlin garage is walked, rhombus scraper plate by mud-suction nozzle two inboards imports mud-suction nozzle again, fiber walk in the mud pipe is successfully sucked sludge sump by siphonic system under the hydrostatic pressure that makes progress and powerful aerostatic buoyancy double action like this.
The use of the utility model blow device obviously increases original suction mud system siphon sludge volume, the regulating reservoir sludge content reduces, the regulating reservoir filth-discharging effect obviously takes a turn for the better, the situation that suction dredge is stuck and dredging tube stops up is eliminated substantially, the water quality that enters water purifier is improved, successfully solve the problems such as suction dredge is stuck, siphon quantity not sufficient, the easy obstruction of dredging tube, obtained the effect of optimized device performance.The pool bottom sludge deposition reduces 30% than original, and the water purifier cleaning cycle has extended more than 3 times.When dredging tube stopped up, only needing to open the backwash scavenging conduit can discharge tamper in pipe.The utility model is a kind of, and to inhale the blow device of mud system for the rhombus scraper plate simple in structure, installs simple for productionly, invests littlely, and cost is low, has guaranteed the unimpeded of sewage treatment process, has reduced operator employee's labour intensity.
Description of drawings
A kind of blow device of inhaling the mud system for the rhombus scraper plate of the utility model has following accompanying drawing:
Fig. 1 is a kind of blow device aeration advection suction dredge structural representation of inhaling the mud system for the rhombus scraper plate of the utility model;
Fig. 2 is a kind of blow device structural representation of inhaling the mud system for the rhombus scraper plate of the utility model;
Fig. 3 is a kind of blow device scavenging conduit sectional structure schematic diagram of inhaling the mud system for the rhombus scraper plate of the utility model.
Wherein: 1, girder parts; 2, introduce the pneumatics airduct; 3, end carriage parts; 4, light rail; 5, mud-suction nozzle; 6, blow device; 7, water receiving tank; 8, priming device; 9, pneumatics wind introducing port; 10, purge aeration tube; 11, purge hole; 12, service bridge; 13, dredging tube; 14, horizontal sedimentation tank; 15, magnetic valve; 16, manual ball valve.
The specific embodiment
Below in conjunction with drawings and Examples, a kind of blow device technical scheme of inhaling the mud system for the rhombus scraper plate of the utility model is further described.
as shown in Figure 1-Figure 3, a kind of blow device of inhaling the mud system for the rhombus scraper plate comprises girder parts 1, introduce pneumatics airduct 2, pneumatics wind introducing port 9, end carriage parts 3, light rail 4, mud-suction nozzle 6, blow device 6, water receiving tank 7, priming device 8, described blow device 6 comprises purging aeration tube 10, introduce pneumatics airduct 2 and be arranged on the purge hole 11 that purges on aeration tube 10, described introducing pneumatics airduct 2 causes on mud-suction nozzle 5 tops along service bridge 12 by fixed support, its input is connected with pneumatics wind or the self-chambering small-sized air compressor of water purification station aeration tank 14, output is connected with the purging aeration tube 10 that is fixedly mounted on mud-suction nozzle 5 liang of inboards.As Fig. 1-shown in Figure 2
Described purging aeration tube 10 arranges two, adopts stainless steel tube to make, and purges aeration tube 10 lower ends horizontal by 45 ° of uniform purge holes 11 that arrange in angle.As Fig. 2-shown in Figure 3.
Set up manual ball valve 16 between magnetic valve 15 and dredging tube 13.
Embodiment 1.
as shown in Figure 1-Figure 3, a kind of blow device of inhaling the mud system for the rhombus scraper plate comprises girder parts 1, introduce pneumatics airduct 2, pneumatics wind introducing port 9, end carriage parts 3, light rail 4, mud-suction nozzle 6, blow device 6, water receiving tank 7, priming device 8, described blow device 6 comprises purging aeration tube 10, introduce pneumatics airduct 2 and be arranged on the purge hole 11 that purges on aeration tube 10, described introducing pneumatics airduct 2 causes on mud-suction nozzle 5 tops along service bridge 12 by fixed support, its input is connected with pneumatics wind or the self-chambering small-sized air compressor of water purification station aeration tank 14, output is connected with the purging aeration tube 10 that is fixedly mounted on mud-suction nozzle 5 liang of inboards.As Fig. 1-shown in Figure 2
Described purging aeration tube 10 arranges two, adopts stainless steel tube to make, and purges aeration tube 10 lower ends horizontal by 45 ° of uniform purge holes 11 that arrange in angle.As Fig. 2-shown in Figure 3.
Set up manual ball valve 16 between magnetic valve 15 and dredging tube 13.
1) rhombus scraper plate and inhale the mud system and blow device is installed as shown in Figure 1.The utility model blow device is quoted pneumatics airduct net pneumatics wind as wind regime, cause by service bridge the mud system of inhaling, be fixedly mounted between dredging tube and rhombus scraper plate, scavenging conduit is designed to two DN20 stainless steel tubes, at each the uniform φ 4mm in rhombus scraper plate guiding port place spacing 200mm purge hole, purge direction horizontal by 45 ° of angles, two scavenging conduits are placed in mud-suction nozzle two inboards with fixed mount respectively, when walking, purlin garage blows afloat respectively the both sides settled sludge, import mud-suction nozzle 5 by the rhombus scraper plate again, suck sludge sump by siphonic system.So just can make a large amount of settled sludges blow afloat with dilution of sewage after enter dredging tube 13, avoid suction dredge to be stuck and dredging tube stops up and the phenomenon of soakage deficiency, blow device can blow afloat some foreign material and avoid entering dredging tube and stop up the siphon of magnetic valve destruction simultaneously.
2) the dredging tube dredger is installed.The compressed air of utilize introducing draws branched pipe access recoil tube and blast compressed air in the mud pipe, and the fiber walk in the mud pipe successfully is discharged to the mud groove under the hydrostatic pressure that makes progress and powerful aerostatic buoyancy double action like this.
3) magnetic valve is set up manual control ball valve.Set up manual ball valve between magnetic valve and dredging tube, in case magnetic valve lost efficacy, enable hand-operated valve and control, close again after siphon causes.
Claims (3)
1. one kind is used for the blow device that the rhombus scraper plate is inhaled the mud system, comprise girder parts (1), introduce pneumatics airduct (2), pneumatics wind introducing port (9), end carriage parts (3), light rail (4), mud-suction nozzle (5), blow device (6), water receiving tank (7), priming device (8), it is characterized in that: described blow device (6) comprises purging aeration tube (10), introduce pneumatics airduct (2) and be arranged on the purge hole (11) that purges on aeration tube (10), described introducing pneumatics airduct (2) causes on mud-suction nozzle (5) top along service bridge (12) by fixed support, its input is connected with water purification station aeration tank pneumatics wind or self-chambering small-sized air compressor, output is connected with the purging aeration tube (10) that is fixedly mounted on mud-suction nozzle (5) two inboards.
2. the blow device of inhaling the mud system for the rhombus scraper plate according to claim 1, it is characterized in that: described purging aeration tube (10) arranges two, the employing stainless steel tube is made, and purges aeration tube (10) lower end horizontal by 45 ° of uniform purge holes (11) that arrange in angle.
3. the blow device of inhaling the mud system for the rhombus scraper plate according to claim 1, is characterized in that: set up manual ball valve (16) between magnetic valve (15) and dredging tube (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220231355 CN202961990U (en) | 2012-05-22 | 2012-05-22 | Purge device used for rhombus-shaped scraper plate mud-absorbing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220231355 CN202961990U (en) | 2012-05-22 | 2012-05-22 | Purge device used for rhombus-shaped scraper plate mud-absorbing system |
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| CN202961990U true CN202961990U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220231355 Expired - Lifetime CN202961990U (en) | 2012-05-22 | 2012-05-22 | Purge device used for rhombus-shaped scraper plate mud-absorbing system |
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| CN (1) | CN202961990U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721446A (en) * | 2013-11-22 | 2014-04-16 | 南通华新环保设备工程有限公司 | Center driving concentrated mud scraper provided with aeration components |
| CN105214350A (en) * | 2014-06-23 | 2016-01-06 | 江苏夏航环境工程有限公司 | Time formula settling zone structure certainly in integrated sewage treating apparatus |
| CN106477715A (en) * | 2016-12-30 | 2017-03-08 | 中冶华天工程技术有限公司 | Aeration component, the bottom dynamic aeration system including aeration component and aeration method |
| CN106517498A (en) * | 2016-12-30 | 2017-03-22 | 中冶华天工程技术有限公司 | Dynamic bottom aeration system and aeration method thereof |
| CN106830299A (en) * | 2016-12-30 | 2017-06-13 | 中冶华天工程技术有限公司 | Reciprocating motion type bottom aerating system and its aeration method |
| CN112742075A (en) * | 2021-01-07 | 2021-05-04 | 杭州国泰环保科技股份有限公司 | Peripheral transmission mud scraping and sucking machine |
| CN113926222A (en) * | 2021-11-05 | 2022-01-14 | 江苏融泽环保设备有限公司 | Travelling type mud scraping and sucking machine with fan backwashing function |
-
2012
- 2012-05-22 CN CN 201220231355 patent/CN202961990U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103721446A (en) * | 2013-11-22 | 2014-04-16 | 南通华新环保设备工程有限公司 | Center driving concentrated mud scraper provided with aeration components |
| CN105214350A (en) * | 2014-06-23 | 2016-01-06 | 江苏夏航环境工程有限公司 | Time formula settling zone structure certainly in integrated sewage treating apparatus |
| CN105214350B (en) * | 2014-06-23 | 2017-09-12 | 江苏夏航环境工程有限公司 | In integrated sewage treating apparatus plot structure is precipitated from the formula of returning |
| CN106477715A (en) * | 2016-12-30 | 2017-03-08 | 中冶华天工程技术有限公司 | Aeration component, the bottom dynamic aeration system including aeration component and aeration method |
| CN106517498A (en) * | 2016-12-30 | 2017-03-22 | 中冶华天工程技术有限公司 | Dynamic bottom aeration system and aeration method thereof |
| CN106830299A (en) * | 2016-12-30 | 2017-06-13 | 中冶华天工程技术有限公司 | Reciprocating motion type bottom aerating system and its aeration method |
| CN112742075A (en) * | 2021-01-07 | 2021-05-04 | 杭州国泰环保科技股份有限公司 | Peripheral transmission mud scraping and sucking machine |
| CN113926222A (en) * | 2021-11-05 | 2022-01-14 | 江苏融泽环保设备有限公司 | Travelling type mud scraping and sucking machine with fan backwashing function |
| CN113926222B (en) * | 2021-11-05 | 2023-01-20 | 江苏融泽环保设备有限公司 | Travelling type mud scraping and sucking machine with fan backwashing function |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |