CN103252180B - A kind of acceleration polymer swollen particle dissolution device of oozing structure with cleaning slot and water - Google Patents
A kind of acceleration polymer swollen particle dissolution device of oozing structure with cleaning slot and water Download PDFInfo
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- CN103252180B CN103252180B CN201310069889.4A CN201310069889A CN103252180B CN 103252180 B CN103252180 B CN 103252180B CN 201310069889 A CN201310069889 A CN 201310069889A CN 103252180 B CN103252180 B CN 103252180B
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Abstract
The invention discloses a kind of acceleration polymer swollen particle dissolution device of oozing structure with cleaning slot and water, it is characterized in that: this device is by cleaner, draw unit and liquid storage cylinder composition, draw unit top is the cleaner be fixed on power transmission shaft, draw unit is by upper fixed tooth disk, active toothed disk, lower fixed tooth disk, power transmission shaft, bearing block forms, cleaner bottom is followed successively by the upper fixed tooth disk all with some through holes, active toothed disk, lower fixed tooth disk, described upper fixed tooth disk and lower fixed tooth disk adopt short toothing near the face of active toothed disk, described upper fixed tooth disk, lower fixed tooth disk is respectively equipped with some dovetail grooves with the face that active toothed disk is engaged mutually, described upper fixed tooth disk and lower fixed tooth disk inside are provided with some water and ooze passage and communicate with several nozzles on short toothing, water oozes passage and is connected with external water pipe, liquid storage cylinder is provided with inlet and liquid outlet.The present invention installs simply, and floor space is little, lightweight, and treating capacity is large, and accelerates structure adaptability.
Description
Technical field
The invention provides a kind of pressure stretching instant device accelerating partially hydrolyzed polyacrylamide (PHPA) base polymer, be specifically related to a kind of acceleration polymer swollen particle dissolution device of oozing structure with cleaning slot and water.
Background technology
Polymer flooding improves one of important method of recovery ratio as oil field development, and at home and abroad onshore oil field is widely used.And offshore oilfield is owing to lacking freshwater resources, the salinity of its injection water is high, calcium ions and magnesium ions content is high.The saline-alkaline tolerance of conventional part hydrolyzed polyacrylamide is not enough, and its viscosity is low, far can not meet the requirement of offshore oilfield.Hydrophobic associated polymer is because its main chain has a small amount of hydrophobic grouping, solution has that reversible tridimensional network, shear thinning behavior and injection are good, anti-shear ability is strong, saline-alkaline tolerance is good, viscosity high, high in the water medium viscosity of high salinity, high contents of calcium and magnesium ion concentration, be adapted at the offshore oilfield application lacking freshwater resources; The oil reservoir that formation permeability is high, viscosity of crude is high, hydrophobic associated polymer has more outstanding advantage.Hydrophobic associated polymer stirring curing time conventional under normal temperature (20 DEG C ~ 25 DEG C) is long, greatly constrains its application at sea on oil field.Therefore the mining site for offshore oilfield is actual, accelerates the research of hydrophobic associated polymer dissolution velocity, significant to the raising recovery efficiency technique of offshore oilfield based on polymer.
Carry out the solubility study work of hydrophobic associated polymer at present, under existing method, the dissolution time of hydrophobic associated polymer is more than 120 minutes, this just means will have the slaking tank of significant volume and quantity to ensure the dissolving completely of polymer, for the offshore platform of space and limited load bearing capacities, especially existing small-sized platform, carries out polymer flooding and may realize hardly.
The online instant seminar in recovery ratio laboratory is improved by Southwest Petrol University, different pore size screen cloth or the orifice plate of suitable interval are set by in-line portion, peel off and cutting swellable particles, reduce the particle diameter of swellable particles, shorten dissolution time, and demonstrate the feasibility of this idea.Within 2006, carry out on-the-spot scale-up, take endless form, repeatedly peel off and cut AP-P4 swellable particles, the dissolution time of result AP-P4 shortens greatly.But because cutting polymer strand causes its chain rupture repeatedly, solution viscosity reduces; Swellable particles blocking screen cloth or orifice plate, can not meet the requirement of offshore platform polymer injection allocation simultaneously.Therefore, be badly in need of the hydrophobic associated polymer instant device that a kind of structure is simple, easy to operate, accelerate the dissolution velocity of hydrophobic associated polymer, shorten dissolution time, its solution property meets on-the-spot application requirement.
Summary of the invention
The object of the present invention is to provide a kind of bipolar pressure strained polymer swellable particles accelerate dissolution device, this device high efficiency can accelerate polymer beads dissolving more.
For reaching this object, the present invention by the following technical solutions:
A kind of acceleration polymer swollen particle dissolution device of oozing structure with cleaning slot and water, it is characterized in that this device is by cleaner, draw unit and liquid storage cylinder composition, draw unit top is the cleaner be fixed on power transmission shaft, described cleaner is made up of multiple impellers, draw unit is by upper fixed tooth disk, active toothed disk, lower fixed tooth disk, power transmission shaft, bearing block forms, cleaner bottom is followed successively by the upper fixed tooth disk all with some through holes, active toothed disk, lower fixed tooth disk, described upper fixed tooth disk and lower fixed tooth disk adopt short toothing near the face of active toothed disk, and with the short toothing on active toothed disk two sides is evenly engaged, described upper fixed tooth disk, lower fixed tooth disk is respectively equipped with some dovetail grooves with the face that active toothed disk is engaged mutually, described upper fixed tooth disk and lower fixed tooth disk inside are provided with some water and ooze passage and communicate with several nozzles on short toothing, water oozes passage and is connected with external water pipe, described draw unit also comprises power transmission shaft and bearing block, active toothed disk is fixed on power transmission shaft, power transmission shaft is connected belt pulley by bearing block with liquid storage cylinder, bearing block is fixed on liquid storage cylinder, draw unit is positioned at liquid storage cylinder, liquid storage cylinder top is provided with inlet, bottom is provided with liquid outlet.
Preferably, described cleaner is cross shape impeller, and this impeller is 4 blades, and the blade of cleaner impeller is perpendicular to upper fixed tooth disk, and this design can clean the polymers swell particle sticked on fixed tooth disk better.
Preferably, at its base angle, front end toward active toothed disk rotation direction in obtuse angle, its base angle, rear end is acute angle to described dovetail groove.Preferably, its base angle, front end is 75 °, and base angle, rear end is 25 °.
Preferably, described dovetail groove is evenly distributed on the face that fixed tooth disk and lower fixed tooth disk and active toothed disk be engaged mutually, amounts to 132 dovetail grooves.
Preferably, the concentric circles gear ring of described upper fixed tooth disk, lower fixed tooth disk and active toothed disk adopts short toothing, the long 3 ~ 5cm of tooth.The design of this length range can reduce design and difficulty of processing.Short tooth surface designs for arc transition.
Preferably, described water oozes passage and nozzle is evenly distributed on fixed tooth disk and lower fixed tooth disk, and described water oozes passage guides the center of circle into from upper fixed tooth disk and lower fixed tooth disk circumference and be uniformly distributed, and upper fixed tooth disk and lower fixed tooth disk respectively have 12 water to ooze passage.
Preferably, described water oozes passage and communicates with the nozzle of short toothing, and upper fixed tooth disk and lower fixed tooth disk respectively have 132 nozzles, and described nozzle is positioned at the lower card of fixed tooth disk and the upper disk surface of lower fixed tooth disk.
Preferably, the short toothing top of described active toothed disk and lower fixed tooth disk is trapezoidal, and upper fixed tooth disk reduces gradually with the spacing that is engaged of lower fixed tooth disk with active toothed disk, active toothed disk from top to bottom.
Preferably, be also provided with mechanical seal in the middle of described power transmission shaft bottom and bearing block, mechanical seal outside is provided with centralizer, and is fixed on bearing block.Mechanical seal prevents the solution in liquid storage cylinder from entering power transmission shaft thus corrosion power transmission shaft, and centralizer can prevent power transmission shaft from rocking and skew.
Preferably, described liquid storage cylinder is made up of upper cover and housing, and upper cover and housing adopt connecting bolt be connected and seal, and inlet is located at upper cover top, and liquid outlet is located at lower housing portion.
Preferably, described power transmission shaft to be connected on outside with liquid storage cylinder by bearing block puts motor, will motor be put and directly drive power transmission shaft, can save space, simplified apparatus, conveniently installs, and also can reduce the corrosion of liquid to power transmission shaft simultaneously.
Beneficial effect of the present invention is: can obtain homogeneous hydrophobic association polymer solution at short notice with this device, can be used in the polymer displacement of reservoir oil tech under high salinity condition, the recovery ratio of oil is improved, and have that treating capacity is large, lightweight, floor space is little, installation is simple, can clean when fixed tooth disk there being bulky grain polymers swell particle.
Accompanying drawing explanation
Fig. 1 is the structural representation that this band cleaning slot and water ooze the acceleration polymer swollen particle dissolution device of structure;
Fig. 2 is the dovetail groove schematic diagram that acceleration polymer swollen particle dissolution device that this band cleaning slot and water ooze structure is positioned on lower fixed tooth disk;
Fig. 3 is that the lower fixed tooth disk water that this band cleaning slot and water ooze the acceleration polymer swollen particle dissolution device of structure oozes access diagram;
Fig. 4 is the top view that this band cleaning slot and water ooze the active toothed disk of the acceleration polymer swollen particle dissolution device of structure;
Fig. 5 is the short toothing amplification profile that this band cleaning slot and water ooze the upper fixed tooth disk of the acceleration polymer swollen particle dissolution device of structure, active toothed disk, lower fixed tooth disk;
Fig. 6 is the top view that this band cleaning slot and water ooze the cleaner of the acceleration polymer swollen particle dissolution device of structure;
Fig. 7 is another schematic diagram improved that this band cleaning slot and water ooze the acceleration polymer swollen particle dissolution device of structure.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
As Fig. 1 to Fig. 7, this inventive belt cleaning slot and water ooze the acceleration polymer swollen particle dissolution device of structure by cleaner 19, draw unit and liquid storage cylinder 1 form, draw unit top is the cleaner 19 be fixed on power transmission shaft 6, described cleaner 19 is made up of multiple impellers, draw unit is by upper fixed tooth disk 3, active toothed disk 4, lower fixed tooth disk 5, power transmission shaft 6, bearing block 7 forms, cleaner 19 bottom is followed successively by the upper fixed tooth disk 3 all with some through holes 2, active toothed disk 4, lower fixed tooth disk 5, described upper fixed tooth disk 3 and lower fixed tooth disk 5 adopt short tooth 8 structure near the face of active toothed disk 4, and be engaged with short tooth 8 even structure on active toothed disk 4 two sides, described upper fixed tooth disk 3, the face that lower fixed tooth disk 5 and active toothed disk 4 are engaged mutually is respectively equipped with some dovetail grooves 24, described upper fixed tooth disk 3 and lower fixed tooth disk 5 inside are provided with some water and ooze passage 22 and communicate with short tooth 8 several nozzles 23 structural, water oozes passage 22 and is connected with external water pipe 21, described active toothed disk 4 is fixed on power transmission shaft 6, power transmission shaft 6 is connected belt pulley 9 by bearing block 7 with liquid storage cylinder 1, bearing block 7 is fixed on liquid storage cylinder 1, draw unit is positioned at liquid storage cylinder 1, liquid storage cylinder 1 top is provided with inlet 10, bottom is provided with liquid outlet 11.
During use, as Fig. 1 to Fig. 7, first the water that injection allocation water is supplied to upper fixed tooth disk 3 and lower fixed tooth disk 5 by external water pipe 21 is oozed passage 22, injection allocation water oozes passage 22 by water and sprays from nozzle 23.Then the external motive device of oozing the acceleration polymer swollen particle dissolution device of structure with this band cleaning slot and water is set, makes belt pulley 9 drive power transmission shaft 6, thus active toothed disk 4 is rotated.The aqueous solution of not consoluet hydrophobic associated polymer enters liquid storage cylinder 1 from the inlet 10 of upper cover 12, the aqueous solution of hydrophobic associated polymer is through cleaner 1, then upper fixed tooth disk 3 and active toothed disk 4 is entered from through hole 2 successively, driven fluted disc 4 enters lower fixed tooth disk 5 again, because upper fixed tooth disk 3, active toothed disk 4 and lower fixed tooth disk 5 all adopt short tooth 8 structure, short tooth 8 structure of active toothed disk 4 is engaged with short tooth 8 even structure of upper fixed tooth disk 3, lower fixed tooth disk 5.Short tooth 8 structure upper of lower fixed tooth disk 3 and active toothed disk 4 is trapezoidal, upper fixed tooth disk 3 is engaged spacing 13 with active toothed disk 4, active toothed disk 4 and lower fixed tooth disk 5 and reduces gradually from top to bottom, and active toothed disk 4 is with the rotation speed operation of 1400rpm, so the swellable particles of hydrophobic associated polymer in the aqueous solution of hydrophobic associated polymer is rolled expansion by short tooth 8 structure, form the swellable particles that particle diameter is less.Some dovetail grooves 24 are respectively equipped with the face that active toothed disk 4 is engaged mutually at upper fixed tooth disk 3, lower fixed tooth disk 5, as the dovetail groove 24 that Fig. 2 is on lower fixed tooth disk 5, this kind is positioned at the dovetail groove 24 of fixed tooth disk 3, lower fixed tooth disk 5, its base angle, front end of past active toothed disk 4 rotation direction in obtuse angle, its base angle, rear end is acute angle, can be dovetail groove 24 at its base angle, front end toward active toothed disk 4 rotation direction it be 75 °, its base angle, rear end is 25 °, this design can force the forward fluid motion of liquid storage cylinder 1 li, prevents blocking.Processed swellable particles, by liquid outlet 11, enters into the pipeline be connected with slaking tank, finally enters into slaking tank and dissolve.
Power transmission shaft 6 bottom and the mechanical seal 14 set by bearing block 7 centre prevent the solution of liquid storage cylinder 1 li enter power transmission shaft 6 thus corrode power transmission shaft 6, and the centralizer 15 be fixed on bearing block 7 set by mechanical seal 14 outside, can prevent power transmission shaft 6 from rocking and skew.
Fig. 2 is the dovetail groove schematic diagram that acceleration polymer swollen particle dissolution device that this band cleaning slot and water ooze structure is positioned on lower fixed tooth disk.This dovetail groove 24 is specifically positioned on the short tooth 8 on lower fixed tooth disk 5.Also be positioned at the dovetail groove 24 of upper fixed tooth disk on the short tooth 8 of on fixed tooth disk 3.
If Fig. 3 is that the lower fixed tooth disk water that band cleaning slot and water ooze the acceleration polymer swollen particle dissolution device of structure oozes access diagram, injection allocation water enters water by external water pipe 21 and oozes passage 22, then oozes passage 22 from water and flowed out by the lower nozzle 23 determined in tooth 18.Meanwhile, nozzle 23 also can be positioned at other places of card of fixed tooth disk 3 and lower fixed tooth disk 5.
If Fig. 4 is the top view that this band cleaning slot and water ooze the active toothed disk of the acceleration polymer swollen particle dissolution device of structure, active toothed disk 4 is driven by power transmission shaft 6 and operates, the swellable particles of hydrophobic associated polymer is rolled expansion by short tooth 8 structure, form the swellable particles that particle diameter is less, flow out from through hole 2.
If Fig. 5 is the short toothing amplification view that this band cleaning slot and water ooze the upper fixed tooth disk of the acceleration polymer swollen particle dissolution device of structure, active toothed disk, lower fixed tooth disk.The upper dynamic tooth 17 determining tooth 16 and active toothed disk 4 of upper fixed tooth disk 3 forms the instant structure of one-level, upper determine tooth 16 and dynamic tooth 17 and be mutually engaged and have and be engaged spacing 13, its occlusion spacing 13 upper entrance is 2.45mm, and occlusion spacing 13 lower part outlet is the degree of depth of 0.45mm, its 0.45mm is 5mm.The dynamic tooth 17 of active toothed disk 4 is determined tooth 18 with the lower of lower fixed tooth disk 5 and is formed the instant structure of secondary, dynamic tooth 17 and determine tooth 18 and be mutually engaged and have and be engaged spacing 13 down, its occlusion spacing 13 upper entrance is 1.32mm, and occlusion spacing 13 lower part outlet is the degree of depth of 0.15mm, its 0.15mm is 5mm.By above bipolar instant structure, can make swellable particles force stretch, obtain the swellable particles that particle diameter is less, its effect than only have a fixed tooth disk and active toothed disk good.
If Fig. 6 is the top view that this band cleaning slot and water ooze the cleaner of the acceleration polymer swollen particle dissolution device of structure, cleaner 19 is fixed on power transmission shaft 6, and under the drive of motor, wheel rotation, can clear up the polymers swell particle on fixed tooth disk 3.Because can be attached to when polymers swell particle is large on upper fixed tooth disk 3, the through hole 2 that can block on fixed tooth disk 3 affects the normal operation of device or lowers efficiency, now cleaner 19 operates under the drive of power transmission shaft 6, polymer attached swellable particles in cleaning on fixed tooth disk 3, the cleaner structure that 4 blades 20 form cross shape impeller is simple, the effect of cleaning is also better, and cleaner 19 is then determined, to reach optimum efficiency according to the specification of polymer with the distance of upper fixed tooth disk 3.
Fig. 7 is another schematic diagram improved of the acceleration polymer swollen particle dissolution device of the instant ring of this band and cleaning slot, this improvement motor 25 will be put and is directly driven power transmission shaft 6, power transmission shaft 6 is connected on liquid storage cylinder 1 by mechanical seal 14, centralizer 15, bearing block 7, motor 25 connection for transmission axle 6, motor 25 is fixed by support.This improvement can save space, simplified apparatus, and convenient installation, also can reduce the corrosion of liquid to power transmission shaft simultaneously.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any people being familiar with this technology is in the technical scope disclosed by the present invention; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (11)
1. one kind oozes the acceleration polymer swollen particle dissolution device of structure with cleaning slot and water, it is characterized in that: this device is by cleaner, draw unit and liquid storage cylinder composition, draw unit top is the cleaner be fixed on power transmission shaft, described cleaner is made up of multiple impellers, draw unit is by upper fixed tooth disk, active toothed disk, lower fixed tooth disk, power transmission shaft, bearing block forms, cleaner bottom is followed successively by the upper fixed tooth disk all with some through holes, active toothed disk, lower fixed tooth disk, described upper fixed tooth disk and lower fixed tooth disk adopt short toothing near the face of active toothed disk, and with the short toothing on active toothed disk two sides is evenly engaged, described upper fixed tooth disk, lower fixed tooth disk is respectively equipped with some dovetail grooves with the face that active toothed disk is engaged mutually, described upper fixed tooth disk and lower fixed tooth disk inside are provided with some water and ooze passage and communicate with several nozzles on short toothing, water oozes passage and is connected with external water pipe, described active toothed disk is fixed on power transmission shaft, power transmission shaft is connected belt pulley by bearing block with liquid storage cylinder, bearing block is fixed on liquid storage cylinder, draw unit is positioned at liquid storage cylinder, liquid storage cylinder top is provided with inlet, bottom is provided with liquid outlet.
2. band cleaning slot as claimed in claim 1 and water ooze the acceleration polymer swollen particle dissolution device of structure, and it is characterized in that, described cleaner is cross shape impeller, and the blade of cleaner impeller is perpendicular to upper fixed tooth disk.
3. band cleaning slot as claimed in claim 1 and water ooze the acceleration polymer swollen particle dissolution device of structure, it is characterized in that, at its base angle, front end toward active toothed disk rotation direction in obtuse angle, its base angle, rear end is acute angle to described dovetail groove.
4. the band cleaning slot as described in claim 1 or 3 and water ooze the acceleration polymer swollen particle dissolution device of structure, it is characterized in that, described dovetail groove is evenly distributed on the face that fixed tooth disk and lower fixed tooth disk and active toothed disk be engaged mutually, amounts to 132 dovetail grooves.
5. band cleaning slot as claimed in claim 1 and water ooze the acceleration polymer swollen particle dissolution device of structure, and it is characterized in that, described active toothed disk adopts short toothing, and short tooth tooth length is 3 ~ 5cm, and short tooth surface designs for arc transition.
6. band cleaning slot as claimed in claim 1 and water ooze the acceleration polymer swollen particle dissolution device of structure, it is characterized in that, described water oozes passage and nozzle is evenly distributed on fixed tooth disk and lower fixed tooth disk, described water oozes passage guides the center of circle into from upper fixed tooth disk and lower fixed tooth disk circumference and is uniformly distributed, and upper fixed tooth disk and lower fixed tooth disk respectively have 12 water to ooze passage.
7. band cleaning slot as claimed in claim 6 and water ooze the acceleration polymer swollen particle dissolution device of structure, it is characterized in that, described water oozes passage and communicates with the nozzle of short toothing, upper fixed tooth disk and lower fixed tooth disk respectively have 132 nozzles, and described nozzle is positioned at the lower card of fixed tooth disk and the upper disk surface of lower fixed tooth disk.
8. band cleaning slot as claimed in claim 1 and water ooze the acceleration polymer swollen particle dissolution device of structure, it is characterized in that, the short toothing top of described active toothed disk and lower fixed tooth disk is trapezoidal, and upper fixed tooth disk reduces gradually with the spacing that is engaged of lower fixed tooth disk with active toothed disk, active toothed disk from top to bottom.
9. band cleaning slot as claimed in claim 1 and water ooze the acceleration polymer swollen particle dissolution device of structure, it is characterized in that, be also provided with mechanical seal in the middle of described power transmission shaft bottom and bearing block, mechanical seal outside is provided with centralizer, and is fixed on bearing block.
10. band cleaning slot as claimed in claim 1 and water ooze the acceleration polymer swollen particle dissolution device of structure, it is characterized in that, described liquid storage cylinder is made up of upper cover and housing, and upper cover and housing adopt connecting bolt be connected and seal, inlet is located at upper cover top, and liquid outlet is located at lower housing portion.
11. as claimed in claim 1 band cleaning slots and water ooze the acceleration polymer swollen particle dissolution device of structure, it is characterized in that, described power transmission shaft to be connected on outside with liquid storage cylinder by bearing block puts motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310069889.4A CN103252180B (en) | 2013-03-05 | 2013-03-05 | A kind of acceleration polymer swollen particle dissolution device of oozing structure with cleaning slot and water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310069889.4A CN103252180B (en) | 2013-03-05 | 2013-03-05 | A kind of acceleration polymer swollen particle dissolution device of oozing structure with cleaning slot and water |
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| CN103252180B true CN103252180B (en) | 2015-11-25 |
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| CN101610832A (en) * | 2006-12-19 | 2009-12-23 | 阿氏环球技术公司 | The equipment of preparation dispersion and the method for preparing dispersion |
| CN102059060A (en) * | 2010-10-25 | 2011-05-18 | 中国海洋石油总公司 | Dissolving method of hydrophobically associating polymer and special stretching device thereof |
| CN102679525A (en) * | 2011-03-14 | 2012-09-19 | 乐金电子(天津)电器有限公司 | Water basin structure of air conditioning machine |
| CN203123854U (en) * | 2013-03-05 | 2013-08-14 | 成都诺鑫石油科技有限公司 | Polymer swollen particle dissolution accelerating device with cleaning groove and water seepage structures |
-
2013
- 2013-03-05 CN CN201310069889.4A patent/CN103252180B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0724278A (en) * | 1993-07-06 | 1995-01-27 | Mitsubishi Heavy Ind Ltd | Automatic adjusting device for water solution of granular or powdery water soluble solid |
| CN2761240Y (en) * | 2005-01-26 | 2006-03-01 | 王淼 | Cylinder mechanical aceleration clarifier within grid device |
| CN101610832A (en) * | 2006-12-19 | 2009-12-23 | 阿氏环球技术公司 | The equipment of preparation dispersion and the method for preparing dispersion |
| CN102059060A (en) * | 2010-10-25 | 2011-05-18 | 中国海洋石油总公司 | Dissolving method of hydrophobically associating polymer and special stretching device thereof |
| CN102679525A (en) * | 2011-03-14 | 2012-09-19 | 乐金电子(天津)电器有限公司 | Water basin structure of air conditioning machine |
| CN203123854U (en) * | 2013-03-05 | 2013-08-14 | 成都诺鑫石油科技有限公司 | Polymer swollen particle dissolution accelerating device with cleaning groove and water seepage structures |
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