CN105152292B - A kind of automatic preparation facilities and method of flocculant solution - Google Patents
A kind of automatic preparation facilities and method of flocculant solution Download PDFInfo
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- CN105152292B CN105152292B CN201510545832.6A CN201510545832A CN105152292B CN 105152292 B CN105152292 B CN 105152292B CN 201510545832 A CN201510545832 A CN 201510545832A CN 105152292 B CN105152292 B CN 105152292B
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Abstract
A kind of automatic preparation facilities and method of flocculant solution, the device include the filler bin set gradually, spiral powder supplying mechanism, measuring chute, mixer, the first dissolving tank, the second dissolving tank and controller.The preparation method comprises the following steps: the flocculant pulvis being stored in filler bin is delivered to measuring chute by spiral powder supplying mechanism, it recycles compressed air that pulvis is sent into mixer to be uniformly mixed with the water that hydraulic pressure is 0.12~0.2MPa, obtained mixed material sequentially enters stirring in the first, second dissolving tank, and the flocculant solution that mass concentration is 3~5 ‰ is obtained after stirring.Automation control can be achieved in the present invention, and ensures that flocculant is sufficiently mixed with water, dissolves, and the flocculant solution of preparation can be added directly by adding pump to each toss area, it is ensured that flocculant solution will not deterioration failure due to processed long, influence the effect of wastewater treatment.
Description
Technical field
The present invention relates to industrial waste water treatments, and in particular to a kind of automatic preparation facilities of flocculant solution and
Method.
Background technique
Industry steel-making can generate the waste water largely from pickling, cold rolling and coating unit etc..By being produced in wastewater treatment
Raw levitated object is small suspended particulate and colloidal particle, and in water in dispersion suspended state, pole is not easy precipitating and and water
It is detached from layering, moisture content is very high, and it is sufficiently bulky, it is all inconvenient for conveying and subsequent processing.Therefore, in the technique of wastewater treatment
It is needed in the process to several links such as emulsion neutralization pond, overhead pond, sedimentation basin, acid waste water neutralization pond and suspension Chi Pu gas mixing
Flocculant is added, in order to subsequent dewatering process.
Flocculation is exactly by charge neutrality and adsorptive racks of the organic polymer coargulator to fine particle in suspension and colloid
Bridge destroys the stability of these particles, so that it is contacted with each other and agglomerated together, and then quickly form larger floc sedimentation, can
Rapid subsidence is reached, or realizes the separation with water under the action of mechanical dehydration, the wastewater treatment needed after advantageous.At present various
In waste water treatment process, the use of flocculant is essential ancillary measure.Flocculant is solid phase powder shape, only sufficiently
Its flocculation could be played well by being dissolved in the water, and flocculant solution is apt to deteriorate, so needing matching while using, be made
Use fresh solution.
It currently, is all manually operation to add flocculant, the flocculant pulvis manually toppled over is directly entered in reaction tank,
But for multiple flocculant concentration points, larger workload, and pulvis does not pass through good dissolution, flocculant is also sometimes
It can be gathered in that bottom of pond is blocking, flocculating effect receives very big influence.In addition, generally requiring in wastewater treatment process according to water
The variation of matter carries out the adjustment of corresponding dosage and administration timing of drug, and manual operation can have great error, influences processing effect
Fruit.Complicated operation for existing sewage disposal device, and operates and be short of hands, and often will appear during adding and feeds intake
Not in time, pulvis scatters non-uniform phenomenon.Problems above finally can all influence the processing result of water quality, so, urgently
Need to research and develop flocculant automatically configure and adding technique.
In the prior art, the principle that flocculant solution prepared and added technology mainly passes through electrical, metering device, conveying
A series of elements such as machine, liquidometer and sensor automatically control the investment of pulvis, or within a certain period of time by flocculant and water
Solution is hybridly prepared into add.There are a series of problems in specifically used for this kind of technology, such as: flocculating agent feeding device is direct
Pulvis is sent into wastewater disposal basin using conveyer, flocculant pulvis is added by the control metering of valve, since flocculant has centainly
Viscosity is easily agglomerated after dampness, is not readily dissolved, and for a long time, will block valve or adherency on a conveyor, cause equipment
Failure influences the metering of pulvis.
Existing apparatus dissolution time and speed of agitator in flocculant solution preparation process mismatch, and flocculant is for stirring
Speed it is more demanding.Mixing speed is too fast, and the time is too short, can destroy the backbone of flocculant, loses flocculation；Stirring
Speed is excessively slow, overlong time, and pulvis is not easy sufficiently to dissolve, and can also agglomerate or go bad, and blocking is subsequent to add pipeline, causes equipment event
Barrier, it is therefore desirable to which suitable mixing speed and dissolution time are determined according to the property of flocculant.In addition, special due to flocculant
Property, more demanding for the concentration of flocculant solution, if excessive concentration, viscosity is bigger, and the liquidometer of some preparation facilities exists
It is easily bonded in use process, pipeline easily blocks, to affect the preparation precision of flocculant solution.
Summary of the invention
The purpose of the present invention is to provide the automatic preparation facilities and method of a kind of flocculant solution, overcome in the prior art
The drawbacks of flocculant solution preparation and dosing method, flocculant solution is made to realize the accurate control in dosage during the preparation process,
Ensure that flocculant is sufficiently mixed with water, dissolves；Equipment failure rate is low, and multiple spot may be implemented while adding, reduce manual operation,
Make the flocculation process of wastewater treatment more in time, it is accurate, efficiently and reduce the processing cost of waste water.
In order to achieve the above objectives, the technical scheme is that
A kind of automatic preparation facilities of flocculant solution comprising, filler bin, side wall is equipped with air inlet, and passes through
Pipeline connects compressed air source；Bottom sets out material mouth in filler bin；One spiral powder supplying mechanism is set to the filler bin bottom pair
Answer discharge port；Measuring chute is set to spiral powder supplying mechanism outlet lower section, divides into import and export thereon, wherein import and spiral shell
Revolve the outlet connection of powder supplying mechanism；Measuring chute side wall is equipped with air inlet, and by pipeline connection compressed air source, in the pipeline
Equipped with the first solenoid valve；Mixer, is a tank structure, and powder import, water inlet and the material positioned at bottom are arranged thereon and goes out
Mouthful；The powder import connects the outlet of the measuring chute by pipeline；The water inlet connects water source, the pipeline by pipeline
In be equipped with second solenoid valve；First dissolving tank, side wall open up liquid-inlet, liquid outlet respectively up and down；First dissolution
The liquid-inlet of tank is connected by the material outlet of pipeline and mixer；First blender, first are set in first dissolving tank
Liquidometer；Second dissolving tank, side wall open up liquid-inlet, liquid outlet respectively up and down；The liquid-inlet is connected by pipeline
The liquid outlet of the first dissolving tank is connect, third solenoid valve is equipped in the pipeline；The liquid outlet of second dissolving tank and flocculation
Agent adds conveyance conduit connection, and the other end for adding conveyance conduit connects at least one and adds pump；One controller, the spiral supply
Powder mechanism, the first, second, third solenoid valve, the first, second blender, the first, second liquidometer and add pump respectively electrically connect
Connect the controller.
Further, the mixer includes ontology, upper and lower opening, and upper inside wall annular groove, annular groove side wall is opened
If a water inlet；Inner body wall circumferential direction projection ring-type cone below annular groove；Lid is set at the body openings,
Lid is in the T shape of lower lobes, and center opens up a through-hole as powder import；Lid lower lobes side is the conical surface, should
The upper conical surface of the conical surface and inner body wall ring-type cone cooperatively forms tapered gaps, the tapered gaps, the outlet of lid center through hole and
The lower cone match of inner body wall ring-type cone forms siphon area in through-hole exit.
The centripetal angle of the tapered gaps is 30~60 °.
Again, 1~4 piece of flow-stopping plate of vertical uniform setting on the second dissolving tank inner sidewall.
The method that the present invention prepares flocculant solution using the automatic preparation facilities comprising following steps:
Compressed air is constantly inputted to the filler bin for being stored with flocculant pulvis, then will be flocculated by spiral powder supplying mechanism
Agent pulvis is sent into measuring chute metering；Then, the first solenoid valve is opened, and compressed air enters in measuring chute and flocculant pulvis is defeated
It is sent in mixer；Meanwhile second solenoid valve is opened, and is delivered water into and is formed a high-speed water jet in mixer, with flocculation
Agent powder is uniformly mixed；Obtained mixed material is sequentially sent to be stirred in the first, second dissolving tank；
It is required according to actual production, the low level of liquid level, middle position, upper level position in the first dissolving tank of setting, the second dissolving tank,
When liquid level reaches low level in the first dissolving tank, the first blender brings into operation；When position in liquid level arrival in the first dissolving tank,
Third solenoid valve is opened, and solution enters the second dissolving tank；When liquid level reaches high-order in the first dissolving tank, spiral powder supplying mechanism stops
Only, then, the first solenoid valve, second solenoid valve are successively closed；
When liquid level reaches low level in the second dissolving tank, the second blender brings into operation；Liquid level reaches in second dissolving tank
It when middle position, adds pump and starts to work, the flocculant solution that the mass concentration of preparation is 3~5 ‰ is added to toss area；Second is molten
When liquid level attains to a high place in solution tank, third solenoid valve is closed；To realize that automation continuously prepares flocculant solution.
Further, when position in liquid level arrival in the first dissolving tank, the first solenoid valve, second solenoid valve are opened, toward mixing
Mixed material is made into flocculant pulvis and water in device, then mixed material is sent into the first dissolving tank.
When position in liquid level arrival in the second dissolving tank, the fluid infusion in the second dissolving tank of third solenoid valve is opened；When second
When the liquid level of dissolving tank reaches low level, adds pump and stop working.
When liquid level reaches low level in first dissolving tank, the first blender stops working；When liquid level reaches in the second dissolving tank
When low level, the second blender stops working.
Also, the pressure of the compressed air is 0.2~0.3MPa.
The hydraulic pressure of the water is 0.12~0.2MPa.
The revolving speed of the first blender is 300~400r/min in first dissolving tank, and mixing time is 15~30min；
The revolving speed of the second blender is 100~150r/min in second dissolving tank, and mixing time is 15~30min.
Again, the powder supply ability of the spiral powder supplying mechanism is 1.5~5.5kg/h.
The flocculant pulvis is polyacrylamide flocculant, wherein polyacrylamide weight >=95%, granularity≤
0.2mm。
The present invention also provides a kind of preparation methods of flocculant solution comprising following steps:
1) it is pre-mixed: flocculant pulvis being uniformly mixed with the water flow of injection, obtains the mixture of flocculant pulvis and water
Material；Wherein, hydraulic pressure is 0.12~0.2MPa；
2) be swollen: the mixed material that step 1) is obtained carries out first time stirring, and speed of agitator is 300~400r/min,
Mixing time is 15~30min；
3) dissolve: the mixed material that step 2) obtains carries out second and stirs, and the revolving speed of the blender is 100~150r/
Min, mixing time are 15~30min；The flocculant solution that mass concentration is 3~5 ‰ is obtained after stirring.
Further, the flocculant pulvis is polyacrylamide flocculant, wherein polyacrylamide weight >=95%,
Granularity≤0.2mm.
According to the actual condition at wastewater treatment scene, the toss area of flocculant is multiple, and relatively disperses, if directly will flocculation
Agent is added in handled waste water, and since the viscosity of flocculant is big, diffusion velocity is low, cannot be well dispersed in waste water, meeting
So that partial flocculation agent is not had flocculation, causes the waste of flocculant.Simultaneously flocculant be solid phase powder, save require compared with
Height is not suitable for multiple spot storage and long distance delivery at the scene, it is necessary to be translated into certain density wadding by suitable method
Solidifying agent solution, is then delivered to each toss area by adding pump.
In view of the above technical problems, the present invention devises the automation preparation facilities and method of a kind of flocculant solution, will
Flocculant pulvis is first stored in the closed filler bin an of positive pressuring drying, by the metering of spiral powder supplying mechanism, is delivered to one
In closed measuring chute；Interior measuring chute is positive pressure, has the compressed air of pressure that flocculant pulvis is driven to enter in mixer and spray
The uniform fluid flow mixing penetrated；Swelling reaction occurs subsequently into stirring in the first dissolving tank, enters back into stirring in the second dissolving tank
Dissolution reaction occurs, ultimately forms flocculant solution, finally by conveyance conduit and adds pump and is added to each toss area.
In the design of preparation method and device of the invention:
(1) flocculant storage and metering
Flocculant pulvis is first stored in the dry filler bin of an opposing seal, is uninterruptedly conveyed by pipeline into storehouse
Pressure is the compressed air of 0.2~0.3MPa, clean dried, so that air pressure in filler bin is greater than external atmosphere pressure, prevents the external world
Moisture enters, and causes flocculant and becomes damp and rotten.
Friction masterpiece in spiral powder supplying mechanism, due to the gravity of flocculant pulvis and with spiral powder supplying mechanism inner wall
With the flocculant pulvis for being deposited in lower part is not rotated with conveyor screw, and is only moved forward under helical blade promotion, and metering is reached
Storehouse it is suitable for reading, then since gravity is fallen into measuring chute.Entire transmission process is a totally enclosed state, conveying capacity according to
Rotation time by spiral for powder equipment controls, so being very suitable to the conveying of flocculant.
By the compressed air for the clean dried that input pressure is 0.2~0.3MPa in measuring chute, compressed air is not normal
Logical, on-off passes through the first solenoid valve control.After being passed through compressed air in measuring chute, pressure rise in storehouse, and it is higher than atmosphere
Pressure.Due to differential pressure action, compressed gas enters in mixer with flocculant pulvis along pipeline in measuring chute, plays conveying
Effect.
(2) premixing of flocculant and water
Flocculant pulvis of the present invention selects polyacrylamide pulvis, when polyacrylamide and water dissolution, each
It is all surrounded at once by water when particle enters in water.Because polyacrylamide is met water and is swollen at once, such as several particles, which are got together, is fallen
Enter in water, particle is not easy to separate again after the swelling of surface layer, is unfavorable for subsequent dissolution.It is stirred if be directly added to the water pulvis throwing
It mixes, cannot ensure pulvis energy uniform dissolution, so first carry out being redissolved after being pre-mixed in mixer uniformly before present invention dissolution,
Avoid the caking phenomenon of pulvis and water in course of dissolution.
Hydraulic pressure be 0.12~0.2MPa water by mixer water inlet enter annular groove flow into again section very little and to
Heart angle is 30~60 ° of tapered gaps, should during due to sectional area sudden contraction, the flow velocity of water flow from low to fast,
Siphon area forms a closed conical high-speed water jet, and jet-core region can generate certain volume and inhale flowing.By compressed air
It conveys the flocculant pulvis to come and enters mixer, rolled up in siphon area by water jet and inhale stirring, then flow into blender body,
Since sectional area becomes larger, flow rate of water flow slows down, and spreads around, restores pipeline stream, and powder particles are wrapped up by uniform fluid flow, into
Enter the first dissolving tank.
(3) flocculant dissolves
The preparation of flocculant solution need to be passed through two stages: swelling and dissolution.Since the size of flocculating agent molecule compares moisture
The size of son is much bigger, and the diffusion velocity of the two differs greatly.Hydrone is small and diffusion velocity quickly, and flocculating agent molecule chain is very
Long, intermolecular to intertwine with each other, active force is very big, is not easy to spread.So flocculating agent molecule and water contact initial stage, it is such as pre-mixed the phase,
Flocculant will not be spread into water.But flocculating agent molecule chain has flexibility, strand can generate hole due to warm-up movement, such as
Stirring etc. by external force, the molecule that these holes are diffused out from water soon occupy, flocculating agent molecule volume expansion
As swelling period.With continuing for swelling, hydrone is constantly spread to flocculant internal layer, so that flocculating agent molecule interchain
Distance be gradually increased, the interaction force of interchain is gradually reduced, and causes more and more chain links to loosen, flocculating agent molecule is just
It can be gradually diffused into water, finally complete the process of dissolution.
Therefore, two stages that flocculant dissolves in water need different stirring conditions.In swelling period, need higher
Stirring intensity, make flocculating agent molecule quickly move generate hole, allow hydrone to occupy hole and expand, reduce reaction when
Between, so, the present invention sets in the first dissolving tank the first blender revolving speed as 300~400r/m, and mixing time is 15~
30min。
The present invention destroys the backbone of flocculant in dissolution phase in order to prevent, so that flocculant solution is lost flocculation and makees
With, lower stirring intensity is needed, the flocculating agent molecule of division is allowed gradually uniformly to be diffused into water, formation solution.Therefore, originally
Invention sets the revolving speed of the second blender in the second dissolving tank as 100~150r/m, and mixing time is 15~30min.
Preferably, the present invention 1~4 piece of flow-stopping plate of vertical uniform setting on the second dissolution pot sidewall, effect is to stir
It avoids vortex to reinforce mixing effect in the process, flocculating agent molecule is hindered uniformly to be diffused into water.
After second dissolving tank stirring of the invention, flocculant solution of the invention is obtained, then by adding conveyance conduit
And it adds pump and is added.Within the scope of certain capacity, more can be arranged according to demand and add pump, while to different process points
It is added.
Beneficial effects of the present invention
1. the present invention first passes through mixer premixing in flocculant pulvis and water before entering the first dissolving tank, make flocculant
Powder particles enter back into the dissolution of the first dissolving tank by uniform fluid flow package, avoid diffusion unevenness after flocculant pulvis enters water and cause
The phenomenon that agglomeration.
2. two stages that the present invention dissolves in water according to flocculant are respectively provided with 2 dissolving tanks, and are provided with not
Same speed of agitator, mixing time and internal structure, reacts flocculant pulvis adequately with water and solution is made.
3. can directly be added by adding pump to each process point after flocculant solution preparation of the present invention, it is ensured that flocculant is molten
Liquid will not deterioration failure due to processed long, influence the effect of wastewater treatment.
4. the leakproofness in pulvis storehouse of the present invention and the punching press of inside ensure the dry-storage of flocculant pulvis, solves powder
The hardened problem of the easy moisture absorption of agent.Spiral powder supplying mechanism use screw conveying structure, make pulvis be isolated completely with external environment and
Inside is not easy to plug.Measuring chute plays buffer function, it is ensured that the dosage that flocculates it is accurate.
5. the present invention transmits pulvis using strength, structure is simple, keeps transmission pipeline arrangement simple.
6. the preparation of flocculant solution of the invention, the process of adding can be realized totally-enclosed, extraneous pollution is avoided.
7. automation control may be implemented in automatic preparation facilities provided by the invention, operated without manual intervention.It can basis
Live dosage controls flocculant solution preparation amount, it is ensured that flocculant solution will not go bad because long-time is stored, and avoid molten
Liquid preparation amount excessively causes waste or the live water treatment effect of very few influence.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the automatic preparation facilities of the embodiment of the present invention.
Fig. 2 is the structure sectional view of mixer in the embodiment of the present invention.
Specific embodiment
Below with reference to embodiment and attached drawing, the present invention will be further described.
Referring to Fig. 1, Fig. 2, a kind of automatic preparation facilities of flocculant solution provided by the invention comprising,
Filler bin 1, side wall is equipped with air inlet 101, and connects compressed air source by pipeline 100；Bottom in filler bin 1
Portion sets out material mouth 102；
One spiral powder supplying mechanism 2 is set to 1 bottom of filler bin and corresponds to discharge port 102；
Measuring chute 3 is set to the spiral powder supplying mechanism 2 and exports below (not marking in Fig. 1), divides into import thereon
(not marked in Fig. 1), outlet 301, wherein import is connect with the outlet of spiral powder supplying mechanism 2；3 side wall of measuring chute is equipped with
Air inlet 302, and be connected to by pipeline 300 with compressed air source, the first solenoid valve 4 is equipped in the pipeline 300；
Mixer 5, is a tank structure, and powder import 501, water inlet 502 and the material positioned at bottom are arranged thereon and goes out
Mouth 503；The powder import 501 connects the outlet 302 of the measuring chute 3 by pipeline；The water inlet 502 passes through pipeline
500 are connected to water source, and second solenoid valve 6 is equipped in the pipeline 500；
First dissolving tank 7, side wall open up liquid-inlet 701, liquid outlet 702 respectively up and down；First dissolving tank 7
Liquid-inlet 701 connect with the material outlet 503 of mixer 5 by pipeline；First blender is set in first dissolving tank 7
71, first liquid level gauge 72；
Second dissolving tank 8, side wall open up liquid-inlet 801, liquid outlet 802 respectively up and down；The liquid-inlet 801
The liquid outlet 702 of the first dissolving tank 7 is connected by pipeline 700, is equipped with third solenoid valve 9 in the pipeline 700；Described second is molten
The liquid outlet 802 of solution tank 8 is connect with flocculant concentration conveyance conduit 800, adds the other end connection at least one of conveyance conduit
It is a to add pump 10；Second blender 81, second liquid level gauge 82 are set in second dissolving tank 8；Controller (not shown),
One controller (not shown), the spiral powder supplying mechanism 2, the first solenoid valve 4, second solenoid valve 6, third electromagnetism
It valve 9, the first blender 71, the second blender 81, first liquid level gauge 72, second liquid level gauge 82 and adds pump and 10 is electrically connected
The controller.
Referring to fig. 2, the mixer 5 includes,
Ontology 51, upper and lower opening (under shed is material outlet 503), upper inside wall annular groove 511, annular groove
511 side walls open up a water inlet 502；The 51 inner wall circumferential direction projection ring-type cone 512 of ontology of 511 lower section of annular groove；
Lid 52 is set to 51 opening of ontology, and lid 52 is in the T shape of lower lobes, and center opens up a conduct
The through-hole of powder import 501；52 lower lobes of lid, 521 side is the conical surface 5211, and the conical surface 5211 and 51 inner wall of ontology are cyclic annular
The upper conical surface 5121 of cone 512 cooperatively forms tapered gaps 53, the tapered gaps 53, the outlet of 52 center through hole of lid and ontology 51
The cooperation of the lower conical surface 5122 of inner wall ring-type cone 512 forms siphon area A in through-hole exit.
In the present embodiment, the centripetal angle of tapered gaps 53 is 30~60 °.
Again, 1~4 piece of flow-stopping plate 83 of vertical uniform setting on 8 inner sidewall of the second dissolving tank.
The technological parameter being arranged in the automatic preparation process of flocculant solution in the present embodiment is as follows:
Flocculant: polyacrylamide PAM, content >=95% (weight ratio)；
Granularity :≤0.2mm；
2 powder supply ability of spiral powder supplying mechanism: 1.5~5.5 kgs/hour；
Prepare flocculant solvent concentration: 3~5 ‰；
Preparation time: 0.5~1 hour；
Water: tap water, industry water, all kinds of recycle-waters etc.；
Water pressure: 0.12~0.2MPa；
Water flow: 5~8 cubes ms/h；
Compressed air pressure: 0.2~0.3MPa；
First dissolving tank 7,8 volume of the second dissolving tank: 1.5m3；
First blender, 71 revolving speed: 300r/m；
Second blender, 81 revolving speed: 100r/m；
Add 10 types of pump: pneumatic diaphragm pump；
Add pump number of units: 8；
Toss area quantity: 4.
Before system operation, it need to now check whether compressed air pressure and hydraulic pressure whether in range, have wadding in filler bin 1
Solidifying agent pulvis.When empty in the first dissolving tank 7, the second dissolving tank 8, after system is opened, spiral powder supplying mechanism 2 is first run, part
Flocculant pulvis enters measuring chute 3 by helical feed；After 5 seconds, second solenoid valve 6 is opened, and washes away mixer 5 and pipeline；7 seconds
Afterwards, the first solenoid valve 4 is opened, and flocculant pulvis enters mixer 5 under strength effect and mixes with the water of jet stream, subsequently into the
One dissolving tank 7.
It is required according to actual production, the low level of liquid level, middle position, high-order position in the first dissolving tank 7 of setting, the second dissolving tank 8
It sets, when liquid level reaches the low level of the first liquid level gauge 72 of the first dissolving tank 7, the first blender 71 brings into operation；When liquid level arrives
When up to the middle position of first liquid level gauge 72, third solenoid valve 9 is opened, and solution enters the second dissolving tank 8；When liquid level reaches the first dissolution
When a high position for the first liquid level gauge 72 of tank 7, spiral powder supplying mechanism 2 stops, and after 5 seconds, the first solenoid valve 4 is closed, after 2 seconds, second
Solenoid valve 6 is closed.
When liquid level reaches the low level of the second liquid level gauge 82 of the second dissolving tank 8, the second blender 81 brings into operation；Work as liquid
When position reaches the middle position of second liquid level gauge 82, adds pump 10 and start to work, flocculant solution enters each toss area；When liquid level arrives
Up to second liquid level gauge 82 a high position when, third solenoid valve 9 close.At this point, one completely into flocculant pulvis, molten flocculant powder
It agent and adds process and terminates, realize automation preparation, obtain
When the present invention automatic preparation facilities operation, when in the first dissolving tank 7 liquid level reach in position when, start into pulvis and
Water, specifically the first solenoid valve 4, second solenoid valve 6 are opened, and start that mixing is made into flocculant pulvis and water in mixer 5
Material, then mixed material is sent into the first dissolving tank 7；When position in liquid level arrival in the second dissolving tank 8, third electromagnetism is opened
The fluid infusion in the second dissolving tank 8 of valve 9；When the liquid level of the second dissolving tank 8 reaches low level, adding pump 10 will stop working；First
When liquid level reaches low level in dissolving tank 7, the first blender 71 stops working；When liquid level reaches low level in the second dissolving tank 8, the
Two blenders 81 stop working.
Claims (7)
1. a kind of automatic preparation facilities of flocculant solution, which is characterized in that it includes,
Filler bin, side wall is equipped with air inlet, and connects compressed air source by pipeline；Bottom sets out material mouth in filler bin；
One spiral powder supplying mechanism is set to the filler bin bottom and corresponds to discharge port；
Measuring chute is set to spiral powder supplying mechanism outlet lower section, divides into import and export thereon, wherein import and spiral powder supply
The outlet of mechanism connects；Measuring chute side wall is equipped with air inlet, and connects compressed air source by pipeline, equipped with the in the pipeline
One solenoid valve；
Mixer is a tank structure, powder import, water inlet and the material outlet positioned at bottom is arranged thereon；The powder
Import connects the outlet of the measuring chute by pipeline；The water inlet connects water source by pipeline, is equipped with second in the pipeline
Solenoid valve；
First dissolving tank, side wall open up liquid-inlet, liquid outlet respectively up and down；The liquid-inlet of first dissolving tank is logical
The connection of the material outlet of piping and mixer；First blender, first liquid level gauge are set in first dissolving tank；
Second dissolving tank, side wall open up liquid-inlet, liquid outlet respectively up and down；The liquid-inlet passes through pipeline connection the
The liquid outlet of one dissolving tank is equipped with third solenoid valve in the pipeline；The liquid outlet and flocculant of second dissolving tank are thrown
Conveyance conduit is added to connect, the other end for adding conveyance conduit connects at least one and adds pump；Setting second in second dissolving tank
Blender, second liquid level gauge；
One controller, the spiral powder supplying mechanism, the first, second, third solenoid valve, the first, second blender, first, second
It liquidometer and adds pump the controller is electrically connected；
The mixer includes:
Ontology, upper and lower opening, upper inside wall annular groove, annular groove side wall open up a water inlet；Below annular groove
Inner body wall circumferential direction projection ring-type cone；
Lid is set at the body openings, and lid is in the T shape of lower lobes, and center opens up one as powder import
Through-hole；Lid lower lobes side is the conical surface, and the conical surface and the upper conical surface of inner body wall ring-type cone cooperatively form tapered gaps,
The lower cone match of the tapered gaps, the outlet of lid center through hole and inner body wall ring-type cone forms siphon in through-hole exit
Area；The centripetal angle of the tapered gaps is 30~60 °.
2. the automatic preparation facilities of flocculant solution according to claim 1, which is characterized in that in second dissolving tank
1~4 piece of flow-stopping plate of vertical uniform setting on side wall.
3. a kind of method for preparing flocculant solution using automatic preparation facilities as claimed in claim 1 or 2 comprising as follows
Step:
Compressed air is constantly inputted to the filler bin for being stored with flocculant pulvis, then passes through spiral powder supplying mechanism for flocculant powder
Measuring chute metering is sent into agent；Then, the first solenoid valve is opened, and compressed air enters in measuring chute and is transported to flocculant pulvis
In mixer；Meanwhile second solenoid valve is opened, and is delivered water into and is formed a high-speed water jet in mixer, with flocculant powder
Material is uniformly mixed；Again obtained mixed material is sequentially sent to be stirred in the first, second dissolving tank；The compressed air
Pressure is 0.2~0.3MPa；The hydraulic pressure of the water is 0.12~0.2MPa；
It is required according to actual production, the first dissolving tank of setting, the low level of liquid level, middle position, upper level position in the second dissolving tank, when the
When liquid level reaches low level in one dissolving tank, the first blender brings into operation；When position in liquid level arrival in the first dissolving tank, third
Solenoid valve is opened, and solution enters the second dissolving tank；When liquid level reaches high-order in the first dissolving tank, spiral powder supplying mechanism stops,
Then, the first solenoid valve, second solenoid valve are successively closed；
When liquid level reaches low level in the second dissolving tank, the second blender brings into operation；Liquid level reaches middle position in second dissolving tank
When, it adds pump and starts to work, the flocculant solution that the mass concentration of preparation is 3~5 ‰ is added to toss area；Second dissolving tank
When interior liquid level attains to a high place, third solenoid valve is closed；To realize that automation continuously prepares flocculant solution；
The revolving speed of the first blender is 300~400r/min in first dissolving tank, and mixing time is 15~30min；It is described
The revolving speed of the second blender is 100~150r/min in second dissolving tank, and mixing time is 15~30min；
The flocculant pulvis is polyacrylamide flocculant, wherein polyacrylamide weight >=95%, granularity≤0.2mm.
4. the method according to claim 3 for preparing flocculant solution, which is characterized in that when liquid level arrives in the first dissolving tank
When up to middle position, the first solenoid valve, second solenoid valve are opened, toward mixer in into flocculant pulvis and the obtained mixed material of water, then
Mixed material is sent into the first dissolving tank.
5. the method according to claim 3 for preparing flocculant solution, which is characterized in that when liquid level arrives in the second dissolving tank
When up to middle position, the fluid infusion in the second dissolving tank of third solenoid valve is opened；When the liquid level of the second dissolving tank reaches low level, pump is added
It stops working.
6. the method according to claim 3 for preparing flocculant solution, which is characterized in that liquid level reaches in the first dissolving tank
When low level, the first blender stops working；When liquid level reaches low level in the second dissolving tank, the second blender stops working.
7. the method according to claim 3 for preparing flocculant solution, which is characterized in that the confession of the spiral powder supplying mechanism
Powder ability is 1.5~5.5kg/h.
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