CN1202396A - Flotation underflow draining floating control method - Google Patents
Flotation underflow draining floating control method Download PDFInfo
- Publication number
- CN1202396A CN1202396A CN 98113569 CN98113569A CN1202396A CN 1202396 A CN1202396 A CN 1202396A CN 98113569 CN98113569 CN 98113569 CN 98113569 A CN98113569 A CN 98113569A CN 1202396 A CN1202396 A CN 1202396A
- Authority
- CN
- China
- Prior art keywords
- control
- pipe
- flotation
- ore
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Paper (AREA)
Abstract
On the control cavity floating groove in the deep turbulent ore pulp zone or inside the control box of floating column, one fixed control port is constituted; and inside the lower calm ore pulp zone communicated to the turbulent zone, one floating part comprising weight hammer, float, linkage and nut is constituted. Because of the use of deep ore exhaustion, floating part and control port of special shape, moveable ore exhausting port formed between the floating part and the control port can change proportionally with the flow rate of ore pulp and this ensures stable flotation liquid level and no coarse grain accumulation and bottom flow choke. Being sensitive and reliable in flow rate control, easy to use and saving in power consumption, the saie method is suitable for various flotation plants.
Description
The present invention relates to a kind of ore discharge amount that can control flotation cell or flotation column automatically, make turnover ore pulp balance in flotation cell or the flotation column, keep the high stability device of flotation liquid level.
The ore discharge method that the tradition flotation cell is adopted is the bypass damper method, its operation principle is: put an intermediate box between forward and backward flotation cell, facing to the pipe that advances that is connecting pit under the middle tank wall of pit, facing to tank wall bottom in the middle of the preceding groove one sand setting hole is arranged, but the sand setting hole is provided with the plate of open and close.One adjustable for height gate is arranged on the sand setting hole, round retaining bubble plate,, when production is carried out,, cannot see outside the gate, can't regulate, so generally allow its " normally closed " because the sand setting hole is in the ore pulp depths in order to avoid foam enters intermediate box.Only in groove during the sand setting alluvial, shut again after opening " putting sand " temporarily.Under the strong agitation of flotation device, can float thing and arrive liquid level with bubble floating, scrape by the foam outlet of scraper plate from flotation cell, rising in " the narrow district " of remaining ore pulp between retaining bubble plate and gate, is overflowed by the gate upper edge, enters in the intermediate box, the pipe that advances by pit sucks in the flotation cell of back, ore pulp comes to this and flows through in a series of flotation cells, and progressively carries out flotation, drains as heavy mineral products thing at last.Enter the ore pulp of flotation stage, often little when big when unstable because of each operation before the flotation, low when high during liquid level, liquid level is too high, and foam " band slurry " is too many, influence product purity, liquid level is too low, and this foam of in time drawing together out can not in time be drawn together out, influences the rate of recovery, in different flotation stage, the flotation liquid level also there are different requirements." bypass damper method " is exactly that height by the manual adjustment gate changes liquid level, to satisfy the requirement to the flotation liquid level.
Thin at grinding particle size, mineral proportion is little, under the also metastable situation of each operation, the bypass damper method can satisfy the requirement of production substantially before flotation.But, in other cases, be not so just.Thick or mineral are when great when grinding particle size, entering thick in the flow of slurry that " narrow district " rises, heavy particle sinks to getting back in the flotation cell, it is low with respect to advancing the ore deposit concentration that becomes to make overflow, wherein the particle mean size of solids, proportion all diminish, ore pulp is then opposite in the groove, become dense, thick, heavy, and sand setting hole, intermediate box bottom is in normally off, can not in time discharge coarse sand, thereby thick in the generation trough, heavy particle accumulation phenomenon, along with cumulative rises, overflow thickens gradually, slightly, heavily, up to advance the ore deposit balance, the accumulation just stop.Therefore, in ordinary production, ore pulp all is to be in than the pulp density height of actual motion in producing, than state great, coarse size usually in the groove, generally speaking, accumulation increases power consumption, wearing and tearing increases, and aeration quantity also reduces because of the ore pulp resistance increases, and the gas dispersion difficulty.When accumulation is serious, part or all of deep gouge phenomenon can take place, at this moment produce and just can not normally carry out.Wearing and tearing have been quickened in accumulation, and worn out flotation machine impeller, its stirring capacity of cover plate descend, and have quickened accumulation again, form vicious circle.In addition, when each operation is undesired before the flotation, the mineral slurry flux fluctuation is very big, and its concentration, granularity, proportion fluctuate also big, liquid level big rise and big fall in the groove, the mineral syrup liquid foam coverage, add the stirring that flotation device is strong, liquid level is visual poor, and long flow path, manual adjustment gate usually are untimely, inaccurate, be difficult to stablize so produce.
With " underflow valve method " ore discharge, be that the valve on the manual adjustment underflow pipe is kept into and out of the ore pulp balance, in the flotation column to reach the purpose of stablizing liquid level.But because of the flotation column height is big, the underflow flow velocity is big, and the variation that valve is small can cause the variation that flow is very big, and manual adjustment is difficult to handle appropriately, even causes underflow to stop up, and this to stablize liquid level actual by manual adjustment underflow valve be impossible.This also is one of the reason that can not promote of domestic for many years flotation column.
Purpose of the present invention aims to provide a kind of underflow blockage problem that can solve big and heavy particle accumulation, flotation column in the flotation cell, the flotation underflow discharge control method of can control the ore discharge amount automatically, stablize the flotation pulp liquid level, solution being arranged thick difficult problem, can be saved energy and reduce the cost, reduce production costs.
The objective of the invention is to realize in the following manner, flotation underflow draining floating control method, on the control chamber of the ore discharge channel flotation cell that is in turbulent region, ore pulp deep, or the mouth of peace control vertically upward in the control cabinet of flotation column, the control mouth, control chamber or case are formed standing part, covering bell weight (3) on the control mouth, tubular connecting rod (4) is connected on the bell weight in the centre bore of top, the interior sky of bell weight is communicated with atmosphere, buoyancy aid (6) is enclosed within on the connecting rod, the connecting rod epimere is a male-pipe, cover is regulated nut (7), weight on it, connecting rod, buoyancy aid, nut is formed the floating part that is in the ore pulp zone of silence, on the certain altitude of top, connecting rod top baffle plate (8) is arranged.
A control mouthful outer surface divides three sections, and last hypomere is cylindrical, and the stage casing is conical 18.Wall top, stage casing is opened 1-4 and is stood upside down tri-angle-holedly 21, and tri-angle-holed upper base forms the upper wall nubbin to the translation of epimere wall, promptly leads tooth 20.
Gap between weight end opening and control mouthful tube wall forms flexible mineral ejection hole 22 with tri-angle-holed connection of the following control mouthful wall of weight, with the radius of circle r of flexible mineral ejection hole maximum area equivalence
0(cm) be:
r
0＝1.7(aQ/H
0.5)
0.5?(a＞1) (1)
In the formula: design discharge (m in the Q flotation flowsheet
3/ h)
H flotation liquid level is to the height (cm) of control mouth
A flow amplification coefficient
The height h of delthyrium
0(cm) be:
h
0＝2r
0 0.5 (2)
Tri-angle-holed upper base length overall b (cm) is:
b＝cπr
0 1.5 (c＜1) (3)
In the formula c tri-angle-holed in the maximum activity mineral ejection hole shared ratio,
The control mouthful interior radius of circle r (cm) that cuts is:
r＝(1.05-1.1)r
0 (4)
The radius of circle R (cm) that cuts of tri-angle-holed sharp corner circular section down is:
R
2-(r+m)R-0.5(1-c)r
0 2＝0 (5)
In the formula: m control mouthful epimere pipe thickness
In the weight empty size should guarantee to cover tri-angle-holed 21, and with conical 18 closely cooperate.
The inventive method is described with reference to the accompanying drawings.
Fig. 1 this method is in the application of flotation cell
Fig. 2 this method is in the application of flotation column
Fig. 3 controls the mouth structure facade view
Fig. 4 controls the mouth structure vertical view
Fig. 5 flexible mineral ejection hole forms schematic diagram
With reference to Fig. 1, when flotation cell is used this method, it is back wall at preceding flotation cell, or in the partition wall of forward and backward flotation cell, near flotation cell advances the ore deposit height strong mixing district, peace one control chamber 1 as ore discharge channel, control chamber lower part outlet be wall in groove or after stretching out, advance pipe by threeway 11 and pit and link to each other, another interface of threeway connects the straight-bar 10 of straight-through atmosphere.Control mouthfuls 2 vertically be connected in control chamber suitable for reading in.The standing part of being made up of control chamber, control mouth just is in the turbulent region, ore pulp deep.On the flotation cell wall, be fixed with "
" type washboard 5, the high foam outlet that surpasses flotation cell of washboard reaches on the bottom control mouthful top deeply.It surrounds the floating part of being made up of buoyancy aid 6, connecting rod 4 etc., makes floating part be positioned at the ore pulp zone of silence that the bottom is communicated with the turbulent region.
With reference to Fig. 2, when flotation column is used this method, be to connect a downward-sloping heavy in section underflow pipe 17 in the flotation column bottom, the underflow pipe lower end is communicated with control cabinet 1, in the logical tailings pond of 1 end of control cabinet peace one outlet vertically downward, pacify the logical tailings pond of a tailings pipe, be with valve on the tailings pipe, with the concentricity position of outlet peace vertical tube 14, vertical tube communicates with top buoyancy aid chamber 15 on plane, control cabinet top, buoyancy aid chamber and flotation column are suitable for reading with high, vertical tube, the indoor formation ore pulp of buoyancy aid zone of silence.In case by having near above at the bottom of the case one to be the annular spray pipe 12 at center with the outlet, its tube wall is opened equidistant little hole for water spraying downwards, clear water water inlet pipe 13 is arranged on the sparge pipe, peace is higher than the overflow pipe 16 of flotation column on the clear water water inlet pipe 13, ensure that there is the above water spray pressure of 1 meter water column at little hole for water spraying place, is connected with blow-off pipe 18 under the ring pipe.
Each arrow is expressed as follows among the figure: → flow of slurry to-→ foam trend-→ clear water flows to.
After producing startup, ore pulp enters in the flotation cell (or flotation column) continually, mineral syrup liquid rises, hold up buoyancy aid, make buoyancy aid along the connecting rod vertical lifting, till the nut that withstands small end, when liquid level continues to rise to the roomy part in buoyancy aid top, the weight that buoyancy equals whole " floating part ", at this moment " floating part " rises with amplitude with liquid level, the bell weight end opening of its lower end leaves the garden awl outer surface of control mouth thereupon, and form hole between this section tube wall, along with liquid level rises, hole is increasing, in flotation cell or post emersion the ore pulp behind the froth pulp be exactly thus the hole discharge, increase along with hole, discharge rate increases, until with the inlet balance, the flotation liquid level just settles out, when inlet diminishes, liquid level falls, and floating part falls, and hole diminishes, discharge rate also reduces, until advancing once more, output balance, liquid level settle out on new level again, and be preceding, the difference of twice liquid level in back claims this liquid fluctuating △ h that two kinds of flows form, this mineral ejection hole that changes simultaneously with mineral slurry flux variation area is called flexible mineral ejection hole, because liquid level is to the height constant substantially (liquid fluctuating △ h is very small with respect to the whole height of liquid level) of mineral ejection hole, so the flow rate of pulp at flexible mineral ejection hole place is constant, so the area of flexible mineral ejection hole is always with the proportional variation of mineral slurry flux; Mineral ejection hole area vanishing when entering the ore deposit and stop, ore pulp has not just been discharged, and bell weight is fallen again on the awl outer surface of garden, and mineral syrup liquid is fallen on the height low slightly when producing; Nut in the production on the rotating floating body can change the relative position of buoyancy aid on connecting rod, has also just changed the height of flotation liquid level, like this, the flotation liquid level can be transferred on needed any height.
The deep ore discharge has been created utmost point advantageous conditions for reducing the flotation liquid fluctuating, when the degree of depth is constant, improve the stability of liquid level, will improve the sensitiveness of changes in flow rate to liquid fluctuating, also just be equivalent to improve the sensitiveness of the area of flexible mineral ejection hole to the height change in hole, this is decided by " hole shape " of flexible mineral ejection hole.The flexible mineral ejection hole of this method is the area hole shape very responsive to height change, and it is strong to stablize the liquid level ability.When flow was very little, rectangular opening, the narrow looping pit in plane may form very thin seam, were unfavorable for that row is thick.The present invention adopts the del hole, and it communicates with the narrow looping pit of controlling between mouth with weight, has remedied narrow looping pit and has been unfavorable for arranging thick defective.
Open on the top of control mouthful stage casing tube wall in the del hole, and the upper base in hole overlaps with the taper seat upper base and forms the remaining tube wall of epimere to the upper tube wall translation, promptly leads tooth 20, has limited the scope of activities of bell weight at horizontal plane.The control mouthful shape of the mouth as one speaks parameter by formula requirement of 1-5 is selected.Wherein flow amplification coefficient value condition is as follows:
To Q≤50 meter
3/ hour little flow process, a gets about 4
To Q=(50-300) rice
3/ hour in flow process a get about 3
To Q＞300 meter
3/ hour big flow process a gets about 2.
The value of tri-angle-holed accounting value C in the maximum activity mineral ejection hole is as follows:
In small-sized control mouth, 2/r
0 0.5〉=0.7 o'clock, C=0.7
In large-scale control mouth, 2/r
0 0.5＜0.7 o'clock, C=2/r
0 0.5
According to mineral slurry flux size change activity ore discharge area is floating part.The buoyancy aid 6 of floating part is a up big and down small axisymmetric body, can slide freely up and down on connecting rod 4.Buoyancy aid can adopt the hollow-core construction that is communicated with atmosphere that materials such as engineering plastics make or the solid of interior filling foamed material, and proportion＜＜1, and proportion is constant does not change because of temperature or immersion.When requiring buoyancy aid in working order during design, mineral syrup liquid is cross section largest portion place at an upper portion thereof preferably.
With reference to Fig. 1 adorn one at washboard 5 tops "
" shape baffle plate 8; weight 3 end openings were higher slightly or contour than control mouthful 2 taper seat upper bases when the level of baffle plate should guarantee to mention connecting rod 4; mouthful deviate from from control to prevent weight; guaranteeing that floating part can steadily hang covers in the control mouthful; the variation of mineral slurry flux of calling in person of closely staggering; the area of synchronous change flexible mineral ejection hole, guaranteed liquid level stabilizing.
Fix a pointer 9 on connecting rod 4 tops, correct position is pacified a rule in its vicinity, so that directly observe the height h of the fluctuation △ h of liquid level and the mineral ejection hole that floats.
With reference to Fig. 2, underflow pipe level inclination＞30 °, interior sectional area should satisfy flow rate of pulp＜0.3 meter per second.
In flotation column, unsteady control is that the liquid level according to buoyancy aid chamber 15 carries out, and when having only buoyancy aid chamber 15 " to be communicated with fully " with flotation column, two liquid levels are identical, and the control of floating is just meaningful.Underflow pipe 17 cross sections are big more, and velocity in pipes is more little, more than two liquid levels just approaching more, the control effect is good more, flow velocity is during less than 0.3 meter per second, at this moment the two liquid level discrepancy in elevation can think that less than 1 centimetre buoyancy aid chamber 15 is communicated with fully with flotation column.At this moment, the control of floating just is equivalent to according to the control of floating of flotation column liquid level according to buoyancy aid chamber liquid level; Vertical tube 14 does not hinder the perpendicularity of connecting rod 4, close the tailings pipe when producing beginning, open Clean water valve, keep overflow pipe 16 overflows on the clear water water inlet pipe 13 continuous in the production, to guarantee the water spray pressure of annular spray pipe mouth, guarantee " bottom turbulent flow ", prevent to stop up; During parking, open residue ore pulp in the tailings valve emptying flotation column, prevent the deposition obstruction.
The present invention has realized that floatation underflow discharge controls automatically, and its floating part control is sensitive, not disturbed by foeign element, and precise control is errorless, The special degree of lip-rounding of deep ore discharge and control mouth greatly improves liquid level stabilizing, and the fine problem that solves flotation liquid level stabilizing difficulty is conducive to stablize Production procedure improves mineral processing index, has solved simultaneously the thick difficult problem of row, has eliminated " thick, heavy particle accumulation " and flotation column in the flotation cell The underflow clogging, not only stablized production procedure, also reduced wearing and tearing, reduced power consumption, reduced the production cost of floatation process, and Because the solution of " row thick difficult ", make floatation process can adapt to ore dressing than coarsegrain, thereby refer to for the production capacity of raising equipment, improvement production Mark, the saving energy and reduce the cost, reducing production costs and created good condition in larger scope of realizing comprising ore grinding.
The present invention also has easy to use, the characteristics such as maintenance capacity is few, simple in structure, the bodily form is small and exquisite, handling ease, processing cost are low, can be suitable for Large, medium and small all types of floatation process.
Claims (9)
1, flotation underflow draining floating control method, it is characterized in that on the control chamber of the ore discharge channel flotation cell that is in turbulent region, ore pulp deep, or peace control vertically upward mouthful (2) in the control cabinet of flotation column, the control mouth, control chamber or control cabinet are formed standing part, covering bell weight (3) on the control mouth, tubular connecting rod (4) is connected on the bell weight in the centre bore of top, the interior sky of bell weight is communicated with atmosphere, buoyancy aid (6) is enclosed within on the connecting rod, the connecting rod epimere is a male-pipe, cover is regulated nut (7) on it, weight, connecting rod, buoyancy aid, nut is formed the floating part that is in the ore pulp zone of silence, on the certain altitude of top, connecting rod top baffle plate (8) is arranged
A control mouthful outer surface divides three sections, and last hypomere is cylindrical, and the stage casing is conical (18), and 1-4 handstand tri-angle-holed (21) is opened on tube wall top, stage casing, and the upper base in hole forms the remaining tube wall of epimere to the translation of epimere tube wall, promptly leads tooth (20).
2, control method according to claim 1 is characterized in that gap and the following tri-angle-holed part of controlling mouthful wall of weight between weight end opening and control mouth forms flexible mineral ejection hole (22), with the radius of circle r of flexible mineral ejection hole maximum area equivalence
0(cm) be:
r
0＝1.7(aQ/H
0.5)
0.5?(a＞1)
In the formula: design discharge (m in the Q flotation flowsheet
3/ h)
H flotation liquid level is to the height (cm) of control mouth
A flow amplification coefficient
3, control method according to claim 2 is characterized in that the height h of delthyrium (21)
0(cm) be:
h
0＝2r
0 0.5
Tri-angle-holed upper base length overall b (cm) is:
b＝cπr
1.5 (c＜1)
C tri-angle-holed (21) shared ratio in the maximum activity mineral ejection hole in the formula,
The control mouthful interior radius of circle r (cm) that cuts is:
r＝(1.05-1.1)r
0
The tri-angle-holed outer section radius of circle R (cm) of sharp corner circular section down is:
R
2-(r+m)R-0.5(1-c)r
0 2＝0
In the formula: m is control mouthful epimere pipe thickness (cm)
Empty size should guarantee to cover tri-angle-holed (21) in the weight, and closely cooperates with conical (18).
4, method according to claim 1, it is characterized in that in the partition wall of the back wall of flotation cell or forward and backward flotation cell, arrange ore deposit passage control chamber (1) near the turbulent region, ore pulp deep that advances the height district, ore deposit, outlet connects the pipe that advances of pit backward below it by threeway (11) outside groove or in the groove, upwards is communicated with atmosphere.
5, method according to claim 4, it is characterized in that on cell wall, fixing "
" shape washboard (5), floating part is surrounded, the high foam outlet that surpasses flotation cell reaches on the control mouthful top deeply.
6, method according to claim 1 is characterized in that buoyancy aid is a up big and down small axisymmetric body, proportion constant weight,＜＜1.
7, method according to claim 4, it is characterized in that the flotation column bottom connects a downward-sloping heavy in section underflow pipe (17), the underflow pipe lower end is communicated with control cabinet (1), leads to the tailings pond at control cabinet (1) end peace one outlet vertically downward, pacify a tailings pipe, logical tailings pond.Be with valve on the tailings pipe, at control cabinet plane, top and the concentricity position of outlet peace large diameter vertical tube (14), vertical tube communicates with top buoyancy aid chamber (15), buoyancy aid chamber and flotation column are suitable for reading with high, vertical tube, the indoor formation ore pulp of buoyancy aid zone of silence, in the case by having more than at the bottom of the case one to be the annular spray pipe (12) at center with the outlet, clear water water inlet pipe (13) is arranged on the sparge pipe, clear water water inlet pipe (13) is gone up the overflow pipe (16) that peace is higher than flotation column, there is blow-off pipe (18) below, opens equidistant little hole for water spraying on the annular tube wall downwards.
8, method according to claim 7 is characterized in that underflow pipe (17) is ° downward-sloping with level inclination＞30, and bore should satisfy flow rate of pulp＜0.3 meter per second.
9, method according to claim 7 is characterized in that the downward little hole for water spraying pressure of ring pipe more than 1 meter water column, little hole for water spraying distance＜10cm at the bottom of the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113569A CN1067294C (en) | 1998-05-25 | 1998-05-25 | Flotation underflow draining floating control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113569A CN1067294C (en) | 1998-05-25 | 1998-05-25 | Flotation underflow draining floating control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1202396A true CN1202396A (en) | 1998-12-23 |
| CN1067294C CN1067294C (en) | 2001-06-20 |
Family
ID=5223285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98113569A Expired - Fee Related CN1067294C (en) | 1998-05-25 | 1998-05-25 | Flotation underflow draining floating control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1067294C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124872A (en) * | 2019-06-07 | 2019-08-16 | 烟台东方冶金设计研究院有限公司 | Flap arrangement in a kind of new type flotation machine slot |
| CN117599945A (en) * | 2024-01-18 | 2024-02-27 | 中国矿业大学(北京) | Method for recycling micro-fine cassiterite |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4378165A (en) * | 1980-12-30 | 1983-03-29 | General Signal Corporation | Draft tube apparatus |
| CN1122731A (en) * | 1995-07-07 | 1996-05-22 | 姜志伟 | Bubble floatation machine with separated stirring part and separation part |
-
1998
- 1998-05-25 CN CN98113569A patent/CN1067294C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124872A (en) * | 2019-06-07 | 2019-08-16 | 烟台东方冶金设计研究院有限公司 | Flap arrangement in a kind of new type flotation machine slot |
| CN117599945A (en) * | 2024-01-18 | 2024-02-27 | 中国矿业大学(北京) | Method for recycling micro-fine cassiterite |
| CN117599945B (en) * | 2024-01-18 | 2024-04-05 | 中国矿业大学(北京) | Method for recycling micro-fine cassiterite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1067294C (en) | 2001-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108770745B (en) | Lifting adjusting device for aquaculture net cage and open sea area gravity type aquaculture net cage thereof | |
| CN110498476B (en) | Oil-water separation and recovery equipment for catering industry | |
| CN110043420A (en) | Buoyancy generating set | |
| CN1067294C (en) | Flotation underflow draining floating control method | |
| CN104772231B (en) | A kind of pre- de slime flotation complete set of equipments | |
| CN212789897U (en) | Sedimentation tank for rural sewage treatment | |
| CN211514496U (en) | Transfer tank for chemical preparation | |
| CN2344089Y (en) | Floatation underflow discharge floating control device | |
| CN206955667U (en) | A kind of cyclone separator of U-tube water flowing out structure | |
| CN208177034U (en) | A kind of embedded overflow weir concentrator | |
| CN214495792U (en) | Air flotation tank with dissolved air flotation liquid level automatic regulating function | |
| CN206290962U (en) | A kind of automatic steam trap for measuring instrument connecting pipe | |
| CN106698553A (en) | Cyclone separator with U-shaped pipe water outlet structure | |
| CN2475727Y (en) | Airfloat sewage treatment device | |
| CN110476853B (en) | Culture net cage with self-cleaning function | |
| CN215232310U (en) | Sewage treatment is with straining hydrophone | |
| CN204866216U (en) | Desliming flotation complete sets in advance | |
| CN220223692U (en) | Overflow water outlet device for air floatation tank | |
| CN217164890U (en) | Flotation pulp liquid level control device | |
| CN214399900U (en) | Oil-water separator for kitchen waste sewage | |
| CN217526476U (en) | A clarification bucket for producing lead nitrate | |
| CN219185939U (en) | Novel muddy water mixed liquid gas stripping reflux unit of sedimentation tank | |
| CN216909268U (en) | Even formula of intaking advection sedimentation tank | |
| CN113492958B (en) | Buoyancy-adjustable buoy and adjusting method | |
| CN210114894U (en) | River water purification device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |