CN111468012A - Preparation device and method of bentonite with specific water content - Google Patents
Preparation device and method of bentonite with specific water content Download PDFInfo
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- CN111468012A CN111468012A CN202010434395.1A CN202010434395A CN111468012A CN 111468012 A CN111468012 A CN 111468012A CN 202010434395 A CN202010434395 A CN 202010434395A CN 111468012 A CN111468012 A CN 111468012A
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- water content
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 229910000278 bentonite Inorganic materials 0.000 title claims abstract description 82
- 239000000440 bentonite Substances 0.000 title claims abstract description 82
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims description 16
- 238000003756 stirring Methods 0.000 claims abstract description 163
- 239000012530 fluid Substances 0.000 claims abstract description 54
- 238000003860 storage Methods 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 239000008367 deionised water Substances 0.000 claims description 25
- 229910021641 deionized water Inorganic materials 0.000 claims description 25
- 239000000843 powder Substances 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 11
- 239000008239 natural water Substances 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000009692 water atomization Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 2
- 238000005054 agglomeration Methods 0.000 abstract 1
- 230000002776 aggregation Effects 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 13
- 230000004888 barrier function Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009375 geological disposal Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000002927 high level radioactive waste Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/51—Methods thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/54—Mixing liquids with solids wetting solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/565—Mixing liquids with solids by introducing liquids in solid material, e.g. to obtain slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
- B01F29/83—Mixers with rotating receptacles rotating about a substantially vertical axis with rotary paddles or arms, e.g. movable out of the receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/86—Mixing heads comprising a driven stirrer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/32005—Type of drive
- B01F35/3204—Motor driven, i.e. by means of an electric or IC motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/325—Driving reciprocating or oscillating stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/45—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7179—Feed mechanisms characterised by the means for feeding the components to the mixer using sprayers, nozzles or jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
- B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/28—Mixing cement, mortar, clay, plaster or concrete ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses a preparation device of bentonite with specific water content, which comprises a water storage tank, a support, a top cover, a stirring bin, an atomizing nozzle, a stirring paddle, a fluid director and a driver, wherein the top cover is arranged at the top of the stirring bin, the top cover and the driver are both connected with the support, the driver is in transmission connection with the stirring bin, the stirring bin is rotatably and detachably connected with the top cover, the stirring paddle is rotatably connected with the top cover, one end of the fluid director is slidably connected with the top cover, the fluid director can reciprocate along the radial direction of the stirring bin, and the other end of the fluid director extends into the stirring bin. The invention also provides a preparation method of the bentonite with the specific water content, the distance between the fluid director and the inner wall of the stirring bin is adjusted in real time according to the change of the water content of the bentonite, the agglomeration phenomenon caused by extrusion is effectively reduced, and the preparation uniformity of the bentonite with the specific water content is improved; the preparation device of the bentonite with the specific water content is convenient to operate, and the preparation working efficiency is improved.
Description
Technical Field
The invention relates to the field of buffer backfill material building block preparation, in particular to a preparation device and method of bentonite with specific water content.
Background
The buffer backfill material is used as an important component of a multiple barrier system in a high-level waste geological disposal warehouse, and a large number of researches show that bentonite is a base material of a proper buffer backfill material. Internationally, the bentonite blocks are wrapped around the waste tank in a stacking mode and serve as a last artificial barrier between the waste tank and the geological body, the bentonite blocks play important roles in engineering barriers, hydraulic barriers, chemical barriers, conduction and dissipation of decay heat of radioactive wastes and the like, and the bentonite blocks are effective guarantee for the safety and stability of the geological disposal reservoir.
In the preparation process of the high-compaction bentonite block, the moisture content of the bentonite powder raw material has important influence on the press formability and the integrity of the block, so that the control of the preparation method of the bentonite with specific moisture content becomes a crucial part. However, the presently disclosed formulation methods are largely divided into two categories: one method is to prepare the water-based paint according to the standard GB/T50123-2019 of the geotechnical test method, but the method is manually prepared in an experiment, the preparation efficiency is low, and the difference of target water content is large. The other is mechanical preparation, but the method also aims at stirring and mixing non-expansive soil samples, and because the bentonite is expansive soil containing montmorillonite and has special property of water expansion, the method is not suitable. The bentonite powder has good fluidity at a low water content, but the viscosity thereof increases with an increase in the water content, and the fluidity thereof deteriorates, so that stirring and mixing are relatively difficult. Meanwhile, because the bentonite has extremely strong plasticity, the bentonite and the liquid water are directly mixed, and the liquid water and the bentonite are difficult to be uniformly mixed in the process of preparing the material with the specific water content, the bentonite is agglomerated, adhered to a mixing container and the like, so that the water distribution is not uniform, and the method cannot be used for preparing the bentonite with the specific water content.
Therefore, how to change the current situation that the water content preparation difference is large and the water content distribution is not uniform, which is easy to appear in the preparation of the bentonite with specific water content in the prior art, becomes a problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a device and a method for preparing bentonite with specific water content, which are used for solving the problems in the prior art and improving the uniformity and the preparation efficiency of bentonite preparation.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a preparation device of bentonite with specific water content, which comprises a water storage tank, a support, a top cover, a stirring bin, an atomizing spray head, a stirring paddle, a fluid director and a driver, wherein the top cover is arranged at the top of the stirring bin, the top cover and the driver are both connected with the support, the driver is in transmission connection with the stirring bin, the driver can drive the stirring bin to rotate, the stirring bin can be rotatably and detachably connected with the top cover, the stirring paddle, the atomizing spray head and the fluid director are all arranged in the stirring bin, the stirring paddle can be rotatably connected with the top cover, the stirring paddle can stir raw materials, one end of the fluid director can be slidably connected with the top cover, the fluid director can reciprocate along the radial direction of the stirring bin, and the other end of the fluid director extends into the stirring bin, the water storage tank can store deionized water, the water storage tank with atomizer is linked together, atomizer can to spray deionized water in the stirring storehouse.
Preferably, the water storage tank is connected with a water pump, and the water pump is communicated with the atomizing nozzle through a pipeline.
Preferably, one end of the pipeline close to the atomizing nozzle is provided with a nozzle switch.
Preferably, the atomizer is located on the top cover and towards the stirring bin, the atomizer and the stirring bin are coaxially arranged, and the stirring paddle and the fluid director are located on two sides of the atomizer.
Preferably, the stirring rake includes (mixing) shaft and two sets of stirring vane, the (mixing) shaft rotationally with the top cap links to each other, the axis of (mixing) shaft with the axis of stirring storehouse is parallel, and two sets of stirring vane is along the axis direction of (mixing) shaft is arranged, and is two sets of there is the clearance between the stirring vane.
Preferably, a bearing is arranged at the joint of the stirring paddle and the top cover.
Preferably, the support comprises a bottom support and a top support which are connected, the driver is fixed on the bottom support, one end of the top cover is connected with the top support, and the driver is a motor.
Preferably, the bottom of the stirring bin is provided with a discharge opening, and the discharge opening is provided with a discharge valve.
Preferably, the inner wall of the stirring bin is provided with a lining structure layer, the lining structure layer is made of polytetrafluoroethylene, and the stirring paddle and the fluid director are made of stainless steel.
The invention also provides a preparation method of the bentonite with the specific water content, which comprises the following steps:
selecting a certain amount of bentonite powder, and testing the natural water content of the bentonite powder according to the standard of an earth test method;
weighing bentonite powder with a certain mass, and calculating the added water amount according to the mass of the bentonite, the measured natural water content and the pre-prepared target water content;
step three, putting the weighed bentonite powder into a stirring bin, uniformly spreading the bentonite powder, and adding the weighed deionized water into a water storage tank;
starting a driver, starting an atomizing nozzle to carry out deionized water atomizing spraying after the stirring bin runs stably for 1-2min, wherein the distance between the atomizing nozzle and the bentonite is 2-4cm, the spraying time of the atomizing nozzle lasts 2-3s every time, and the spraying is carried out again at intervals of 3-5 s;
regulating the fluid director before spraying the deionized water to ensure that the distance between the fluid director and the inner wall of the stirring bin is 0.5-1 cm; when the amount of the deionized water in the water storage tank is half of the initial amount of the deionized water, adjusting the fluid director to ensure that the distance between the fluid director and the inner wall of the stirring bin is 1-1.5 cm; after the deionized water in the water storage tank is completely sprayed, closing the atomizing spray head, adjusting the fluid director to ensure that the distance between the fluid director and the inner wall of the stirring bin is 1.5-2cm, and continuously stirring for 3-5 min;
and step six, after stirring is finished, discharging after the stirring of the stirring bin is stopped, filling the prepared bentonite into a container for sealing and storing, and making a record label.
Compared with the prior art, the invention has the following technical effects: the invention discloses a preparation device of bentonite with specific water content, which comprises a water storage tank, a support, a top cover, a stirring bin, an atomizing nozzle, a stirring paddle, a fluid director and a driver, wherein the top cover is arranged at the top of the stirring bin, the top cover and the driver are both connected with the support, the driver is in transmission connection with the stirring bin, the driver can drive the stirring bin to rotate, the stirring bin can be rotatably and detachably connected with the top cover, the stirring paddle, the atomizing nozzle and the fluid director are all arranged in the stirring bin, the stirring paddle is rotatably connected with the top cover, the stirring paddle can stir raw materials, one end of the fluid director is slidably connected with the top cover, the fluid director can reciprocate along the radial direction of the stirring bin, the other end of the fluid director extends into the stirring bin, the water storage tank can store deionized water, the water. The invention also provides a preparation method of the bentonite with the specific water content, and by utilizing the preparation device of the bentonite with the specific water content, a layer of hard aggregates are attached to the inner wall of the stirring bin under the rotary extrusion of the stirring paddle or the fluid director in the stirring process of the bentonite, so that the difficulty is caused to the stirring work; meanwhile, the preparation device for the bentonite with the specific water content is convenient to operate, reduces the labor burden of operators, and improves the preparation working efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a device for preparing bentonite with a specific water content according to the present invention;
the device comprises a water storage tank 1, a water pump 2, a pipeline 3, a nozzle switch 4, an atomizing nozzle 5, a stirring paddle 6, a stirring shaft 601, a stirring blade 602, a flow guider 7, a stirring bin 8, a support 9, a top support 901, a bottom support 902, a driver 10, a bearing 11 and a top cover 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a device and a method for preparing bentonite with specific water content, which are used for solving the problems in the prior art and improving the uniformity and the preparation efficiency of bentonite preparation.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a device for preparing bentonite with a specific water content according to the present invention.
The invention provides a preparation device of bentonite with specific water content, which comprises a water storage tank 1, a bracket 9, a top cover 12, a stirring bin 8, an atomizing spray head 5, a stirring paddle 6, a fluid director 7 and a driver 10, wherein the top cover 12 is arranged at the top of the stirring bin 8, the top cover 12 and the driver 10 are both connected with the bracket 9, the driver 10 is in transmission connection with the stirring bin 8, the driver 10 can drive the stirring bin 8 to rotate, the stirring bin 8 can be rotatably and detachably connected with the top cover 12, the stirring paddle 6, the atomizing spray head 5 and the fluid director 7 are all arranged in the stirring bin 8, the stirring paddle 6 can be rotatably connected with the top cover 12, the stirring paddle 6 can stir raw materials, one end of the fluid director 7 can be slidably connected with the top cover 12, the fluid director 7 can reciprocate along the radial direction of the stirring bin 8, the other end of the fluid director 7 extends, the water storage tank 1 is communicated with the atomizing spray head 5, and the atomizing spray head 5 can spray deionized water into the stirring bin 8.
When the preparation device for the bentonite with the specific water content works, the driver 10 drives the stirring bin 8 to rotate, the stirring bin 8 drives the bentonite raw material to rotate when rotating, and the rotating bentonite raw material pushes the stirring paddle 6 to rotate, so that the effects of stirring and mixing are achieved. In the stirring process of the bentonite, under the rotary extrusion of the stirring paddle 6 or the fluid director 7, the bentonite is attached with a layer of hard aggregates on the inner wall of the stirring bin 8, which causes difficulty in stirring operation. Specifically, in the initial stage of stirring, because the moisture content of the bentonite is low, the distance between the fluid director 7 and the inner wall of the stirring bin 8 can be reduced, so that more raw materials participate in the rotary mixing, the viscosity of the raw materials is increased along with the gradual increase of the moisture content of the raw materials, and during rotation, the agglomerates are attached to the inner wall of the stirring bin 8 under the action of the fluid director 7 to form hard agglomerates, so that the distance between the fluid director 7 and the inner wall of the stirring bin 8 needs to be increased in time according to the increase of the moisture content, the extrusion force is reduced, the agglomerates are reduced, and the raw materials are uniformly stirred. Meanwhile, the preparation device for the bentonite with the specific water content is convenient to operate, reduces the labor burden of operators, and improves the preparation working efficiency.
Wherein, water storage tank 1 is connected with water pump 2, and water pump 2 is linked together through pipeline 3 and atomizer 5, ensures that the deionized water in the water storage tank 1 can get into stirring storehouse 8 smoothly.
In order to facilitate the opening and closing of the control atomizer 5, the end, close to the atomizer 5, of the pipeline 3 is provided with a nozzle switch 4, so that the operation is convenient and fast, and the labor burden of an operator is reduced.
Specifically, the atomizer 5 is located on the top cover 12 and is arranged towards the stirring bin 8, the atomizer 5 and the stirring bin 8 are coaxially arranged, the stirring bin 8 is of a cylindrical structure, it is ensured that the maximum atomization spraying diameter of the atomizer 5 is smaller than the inner diameter of the stirring bin 8, and the stirring paddle 6 and the fluid director 7 are located on two sides of the atomizer 5.
In addition, stirring rake 6 includes (mixing) shaft 601 and two sets of stirring vane 602, and (mixing) shaft 601 rotationally links to each other with top cap 12, and the axis of (mixing) shaft 601 is parallel with the axis of stirring storehouse 8, and two sets of stirring vane 602 are arranged along (mixing) shaft 601's axis direction, have the clearance between two sets of stirring vane 602, set up two sets of stirring vane 602, have improved stirring work efficiency.
In order to make the stirring paddle 6 rotate smoothly, a bearing 11 is arranged at the joint of the stirring paddle 6 and the top cover 12.
More specifically, the bracket 9 includes a bottom bracket 902 and a top bracket 901 connected to each other, the driver 10 is fixed to the bottom bracket 902, one end of the top cover 12 is connected to the top bracket 901, a gap is formed between the stirring bin 8 and the bottom bracket 902, the driver 10 is a motor, the motor can drive the stirring bin 8 to rotate at a speed of 10-50r/min, and when the driver 10 drives the stirring bin 8 to rotate, the top cover 12 remains relatively stationary.
In addition, for convenient unloading, the bottom of stirring storehouse 8 sets up the discharge opening, and the discharge opening is linked together with the inner chamber of stirring storehouse 8, and discharge opening department sets up the discharge valve, the control of being convenient for.
Furthermore, the inner wall of the stirring bin 8 is provided with a lining structure layer, the lining structure layer is made of polytetrafluoroethylene, the adhesion phenomenon of bentonite can be reduced, meanwhile, the corrosion of the bentonite to the stirring bin 8 is reduced, the stirring paddle 6 and the fluid director 7 are made of stainless steel, the corrosion is reduced, and the service life is prolonged.
The invention also provides a preparation method of the bentonite with the specific water content, which comprises the following steps:
selecting a certain amount of bentonite powder, and testing the natural water content of the bentonite powder according to the standard of an earth test method;
weighing bentonite powder with a certain mass, and calculating the added water amount according to the mass of the bentonite, the measured natural water content and the pre-prepared target water content;
thirdly, putting the weighed bentonite powder into a stirring bin 8, uniformly spreading the bentonite powder, and adding the weighed deionized water into the water storage tank 1;
step four, starting the driver 10, starting the atomizing nozzle 5 to atomize and spray the deionized water after the stirring bin 8 runs stably for 1-2min, wherein the distance between the atomizing nozzle 5 and the bentonite is 2-4cm, the spraying time of the atomizing nozzle 5 lasts 2-3s each time, and the spraying is carried out again at intervals of 3-5 s;
step five, before spraying the deionized water, adjusting the fluid director 7 to ensure that the distance between the fluid director 7 and the inner wall of the stirring bin 8 is 0.5-1 cm; when the amount of the deionized water in the water storage tank 1 is half of the initial amount of the deionized water, the fluid director 7 is adjusted to ensure that the distance between the fluid director 7 and the inner wall of the stirring bin 8 is 1-1.5 cm; after the deionized water in the water storage tank 1 is completely sprayed, closing the atomizing nozzle 5, adjusting the fluid director 7 to ensure that the distance between the fluid director 7 and the inner wall of the stirring bin 8 is 1.5-2cm, and continuously stirring for 3-5 min;
and step six, after stirring is finished, discharging after the stirring of the stirring bin 8 is stopped, filling the prepared bentonite into a container, sealing and storing, and making a record label.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The utility model provides a preparation device of specific moisture content bentonite which characterized in that: comprises a water storage tank, a support, a top cover, a stirring bin, an atomizing nozzle, a stirring paddle, a fluid director and a driver, wherein the top cover is arranged at the top of the stirring bin, the top cover and the driver are all connected with the support, the driver is connected with the stirring bin in a transmission way, the driver can drive the stirring bin to rotate, the stirring bin can be rotatably connected with the top cover in a detachable way, the stirring paddle, the atomizing nozzle and the fluid director are all arranged in the stirring bin, the stirring paddle can be rotatably connected with the top cover, the stirring paddle can stir raw materials, one end of the fluid director can be slidably connected with the top cover, the fluid director can follow the radial reciprocating motion of the stirring bin, the other end of the fluid director stretches into the stirring bin, the water storage tank can store deionized water, and the water storage tank is communicated with the atomizing nozzle, the atomizing nozzle can spray deionized water into the stirring bin.
2. The device for preparing bentonite with specific water content according to claim 1, wherein: the water storage tank is connected with a water pump, and the water pump is communicated with the atomizing spray head through a pipeline.
3. The device for preparing bentonite with specific water content according to claim 2, wherein: and a nozzle switch is arranged at one end of the pipeline close to the atomizing nozzle.
4. The device for preparing bentonite with specific water content according to claim 3, wherein: the atomizer is located on the top cover and towards the stirring bin is arranged, the atomizer is coaxially arranged with the stirring bin, and the stirring paddle and the fluid director are located on two sides of the atomizer.
5. The device for preparing bentonite with specific water content according to claim 1, wherein: the stirring paddle comprises a stirring shaft and two groups of stirring blades, the stirring shaft is rotationally connected with the top cover, the axis of the stirring shaft is parallel to the axis of the stirring bin, the stirring blades are arranged in the axis direction of the stirring shaft, and a gap is formed between the stirring blades.
6. The device for preparing bentonite with specific water content according to claim 5, wherein: and a bearing is arranged at the joint of the stirring paddle and the top cover.
7. The device for preparing bentonite with specific water content according to claim 1, wherein: the support includes bottom support and top support that link to each other, the driver is fixed in on the bottom support, the one end of top cap with the top support links to each other, the driver is the motor.
8. The device for preparing bentonite with specific water content according to claim 1, wherein: the bottom of the stirring bin is provided with a discharge opening, and the discharge opening is provided with a discharge valve.
9. The device for preparing bentonite with specific water content according to claim 1, wherein: the inner wall of the stirring bin is provided with a lining structure layer, the lining structure layer is made of polytetrafluoroethylene, and the stirring paddle and the fluid director are made of stainless steel.
10. A method for preparing bentonite with a specific water content by using the device for preparing bentonite with a specific water content according to any one of claims 1 to 8, comprising the steps of:
selecting a certain amount of bentonite powder, and testing the natural water content of the bentonite powder according to the standard of an earth test method;
weighing bentonite powder with a certain mass, and calculating the added water amount according to the mass of the bentonite, the measured natural water content and the pre-prepared target water content;
step three, putting the weighed bentonite powder into a stirring bin, uniformly spreading the bentonite powder, and adding the weighed deionized water into a water storage tank;
starting a driver, starting an atomizing nozzle to carry out deionized water atomizing spraying after the stirring bin runs stably for 1-2min, wherein the distance between the atomizing nozzle and the bentonite is 2-4cm, the spraying time of the atomizing nozzle lasts 2-3s every time, and the spraying is carried out again at intervals of 3-5 s;
regulating the fluid director before spraying the deionized water to ensure that the distance between the fluid director and the inner wall of the stirring bin is 0.5-1 cm; when the amount of the deionized water in the water storage tank is half of the initial amount of the deionized water, adjusting the fluid director to ensure that the distance between the fluid director and the inner wall of the stirring bin is 1-1.5 cm; after the deionized water in the water storage tank is completely sprayed, closing the atomizing spray head, adjusting the fluid director to ensure that the distance between the fluid director and the inner wall of the stirring bin is 1.5-2cm, and continuously stirring for 3-5 min;
and step six, after stirring is finished, discharging after the stirring of the stirring bin is stopped, filling the prepared bentonite into a container for sealing and storing, and making a record label.
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