CN120304077A - A mixing device for repairing saline-alkali land based on fly ash and its repair method - Google Patents
A mixing device for repairing saline-alkali land based on fly ash and its repair method Download PDFInfo
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- CN120304077A CN120304077A CN202510613687.4A CN202510613687A CN120304077A CN 120304077 A CN120304077 A CN 120304077A CN 202510613687 A CN202510613687 A CN 202510613687A CN 120304077 A CN120304077 A CN 120304077A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B77/00—Machines for lifting and treating soil
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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Abstract
本发明提供一种基于粉煤灰修复盐碱地的混合装置及其修复方法，涉及粉煤灰修复盐碱地领域。该基于粉煤灰修复盐碱地的混合装置及其修复方法，包括支架以及安装在支架上的混合桶，所述混合桶的一端转动安装有转动件，转动件内固定安装有搅拌桶，搅拌桶的底端设有若干个筛分孔，搅拌桶内设有空腔A、空腔B、空腔C和搅拌区，搅拌桶内设有空腔A、空腔B、空腔C和搅拌区，空腔A用于装入化学改良剂，该基于粉煤灰修复盐碱地的混合装置及其修复方法，物料在混合前，能够打碎和分散，提高混合效果，三种物料按照一定顺序依次加入，通过设置的双螺旋混合机构，能够进一步提高混合效率，缩短混合时间，混合完成并排料后，能够对混合桶进行清理。
The present invention provides a mixing device and a repairing method for saline-alkali land repair based on fly ash, and relates to the field of fly ash repairing saline-alkali land. The mixing device and the repairing method for saline-alkali land repair based on fly ash include a bracket and a mixing barrel installed on the bracket, a rotating part is rotatably installed at one end of the mixing barrel, a stirring barrel is fixedly installed in the rotating part, a plurality of screening holes are provided at the bottom end of the stirring barrel, a cavity A, a cavity B, a cavity C and a stirring zone are provided in the stirring barrel, a cavity A, a cavity B, a cavity C and a stirring zone are provided in the stirring barrel, and a chemical improver is loaded in the cavity A. The mixing device and the repairing method for saline-alkali land repair based on fly ash can crush and disperse the materials before mixing to improve the mixing effect, and the three materials are added in sequence in a certain order. The double-helix mixing mechanism can further improve the mixing efficiency and shorten the mixing time. After the mixing is completed and the materials are discharged, the mixing barrel can be cleaned.
Description
Technical Field
The invention relates to the field of repairing saline-alkali soil by using fly ash, in particular to a mixing device for repairing saline-alkali soil based on fly ash and a repairing method thereof.
Background
Saline-alkali soil is a land type widely existing and severely limiting agricultural production and ecological environment improvement, the soil contains high-concentration salt such as sodium chloride, sodium sulfate and the like, and alkaline substances such as sodium carbonate, sodium bicarbonate and the like, which cause physical, chemical and biological property deterioration of the soil, the high osmotic pressure of the saline-alkali soil makes plants difficult to absorb water and nutrients in the soil, the soil is hardened, the ventilation and water permeability is poor, the microbial activity is low, the growth of vegetation and the sustainable development of agriculture are greatly limited, the fly ash is solid waste generated after coal burning of coal-fired power plants and the like, the yield is huge and gradually increases, the fly ash contains various nutrient elements required by plant growth such as silicon, aluminum, iron, calcium and the like, and the particles of the fly ash have certain adsorptivity and the capability of improving the soil structure, and the fly ash has various advantages in applying the fly ash to the repair of the saline-alkali soil, on one hand, the components such as aluminosilicate and the like in the fly ash can react with the salt in the soil to reduce the content of harmful salt ions and the like in the soil, and improve the chemical property of the soil; on the other hand, the fine particles of the fly ash can fill soil pores, improve the ventilation and water permeability and the aggregate structure of the soil, are beneficial to microbial activities and plant root growth, have great significance for improving the land utilization rate, guaranteeing the sustainable development of agriculture and improving the ecological environment, and are an effective way for mixing the fly ash with organic materials (such as compost, green manure and the like) and chemical improvers (such as gypsum, sulfur and the like) in a plurality of saline-alkali soil improvement methods.
The traditional mixing arrangement for mixing fly ash, organic material is simple stirring formula mixer, and during operation is rotatory through motor drive (mixing) shaft, and stirring vane rotates thereupon to fly ash, the organic material that is arranged in the agitator mixes, because fly ash granule is tiny and the texture is lighter, and the organic material often shape is irregular, the size is different and have certain fibre nature, in the stirring process, because stirring vane's stirring mode is comparatively single, needs more time just can make these materials that physical property difference is huge mix rapidly and abundant, leads to mixing required time longer, influences follow-up working process.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a mixing device for repairing saline-alkali soil based on fly ash and a repairing method thereof, and solves the problems in the prior art.
The mixing device comprises a bracket and a mixing barrel arranged on the bracket, wherein one end of the mixing barrel is rotatably provided with a rotating part, a stirring barrel is fixedly arranged in the rotating part, the bottom end of the stirring barrel is provided with a plurality of screening holes, a cavity A, a cavity B, a cavity C and a stirring area are arranged in the stirring barrel, the cavity A is used for containing chemical modifier, the stirring area is used for adding fly ash and organic materials, and a stirring mechanism used for stirring is arranged in the stirring area.
The mixing barrel is internally provided with a double-screw mixing mechanism for mixing and stirring, the double-screw mixing mechanism comprises two inclined screw shafts and two screw blades with opposite screw directions, the length of one screw shaft is larger than that of the other screw shaft, the interiors of the two screw shafts are respectively provided with a channel A, the outer surface of one screw shaft is communicated with a plurality of one-way valve jet heads for exhausting gas in one channel A, and the bottom end of the other screw shaft is provided with one-way valve A.
The outside fixed mounting of agitator has two fixed pipes, and the one end of two fixed pipes rotates with two screw shafts respectively to be connected, all is equipped with passageway B, passageway C and the passageway D of intercommunication in proper order in two fixed pipes, and two passageway D communicate with two passageway A respectively, and the intercommunication has the drainage tube that is used for the drainage of chemical modifier to one of them passageway D between agitator and one of them fixed pipe, and fixed mounting has the gas transmission mechanism in the agitator interior that is used for carrying gas to another passageway B, installs the piston group A that is used for controlling drainage mechanism to open or close and is used for controlling gas transmission mechanism to open or close in two fixed pipes respectively.
Preferably, one end of the mixing drum and one end of the stirring drum are both conical.
Preferably, the inner bottom wall of the cavity A is inclined, a feeding pipe is arranged on the upper surface of the stirring barrel, and the feeding pipe is communicated with the cavity A.
Preferably, the stirring mechanism comprises a stirring rod, a plurality of groups of stirring blades longitudinally distributed, a motor, two gears and a toothed ring, wherein the radiuses of the plurality of groups of stirring blades are gradually decreased, one end of the motor and one end of the stirring rod are located in a cavity C, the motor is rotationally connected with the stirring barrel, the motor is fixed with one of the brackets through a fixing frame, the output end of the motor is fixedly connected with one end of the stirring rod, the stirring blades are fixedly connected with the stirring rod, one of the gears is fixedly connected with the stirring rod, the other gear is rotationally connected with the stirring barrel through a rotating shaft and is meshed with the toothed ring, and the toothed ring is fixedly connected with the stirring barrel and is meshed with the two gears.
Preferably, the piston group a comprises a piston a, a push rod a and a slide block which are integrally formed, the piston a is in sliding connection with a channel D close to the piston a, the piston a and the piston are in tight contact, and the slide block is in sliding connection with a channel C close to the piston a.
Preferably, the piston group B comprises a piston B, a push rod B, a fixed block, a sleeve and a spring, wherein the piston B is in sliding connection with a channel B close to the piston B, the piston B is in close contact with the channel B, one end of the push rod B is fixedly connected with the piston B, the other end of the push rod B is in sliding connection with the sleeve, the fixed block is fixedly connected with the inner wall of the channel B close to the fixed block, the fixed block is fixedly connected with the sleeve, and two ends of the spring are respectively fixedly connected with the fixed block and the push rod B.
Preferably, the gas transmission mechanism comprises a gas transmission pipe A, a gas transmission pipe B and a gas inlet pipe, wherein the gas transmission pipe A and the gas transmission pipe B are fixedly connected with the stirring barrel, one end of the gas transmission pipe A is communicated with one of the channels B, the other end of the gas transmission pipe A is rotationally connected with the gas inlet pipe, the other end of the gas inlet pipe is connected with an external gas pump, and two ends of the gas transmission pipe B are respectively communicated with the two channels B.
Preferably, the double-screw mixing mechanism further comprises an annular fixing ring and two grinding wheels, the inner wall of the fixing ring is subjected to anti-skid treatment, and the two grinding wheels are fixedly connected with the two screw shafts respectively and are in close contact with the fixing ring.
Preferably, the inside fixedly connected with feeder hopper of rotating the piece, the one end and the agitator intercommunication of feeder hopper.
A restoration method for restoring saline-alkali soil based on fly ash comprises the following steps:
s1, comprehensively detecting parameters including soil salinity content, pH value (pH value), soil texture (such as sand grains, powder grains and clay proportion), nutrient status (nitrogen, phosphorus, potassium and trace element content) and underground water level, evaluating the status of the saline-alkali soil according to detection results, and determining the salinization degree, fertility level and main problems;
S2, selecting fly ash with proper sources, ensuring the fly ash to meet relevant quality standards, and screening the fly ash to remove large-particle impurities and unburned carbon particles;
S3, preparing organic materials such as decomposed compost, stable manure or green manure, if the organic materials are compost, ensuring that the organic materials are sufficiently decomposed to avoid harmful gases generated by fermentation in soil or consume oxygen in the soil, judging the decomposition degree of the organic materials by detecting indexes of temperature, smell, color and texture of the compost, and crushing the organic materials to ensure that the particle size of the organic materials is moderate;
And S4, selecting a proper chemical modifier according to the detection result of the saline-alkali soil, if the alkalinity of the soil is too strong, selecting a gypsum (calcium sulfate) modifier to neutralize the alkalinity, and for special cases such as that the soil contains too much heavy metal ions, selecting a corresponding chelating agent for treatment.
S5, determining the mixing proportion of the fly ash, the organic material and the chemical modifier according to the specific condition of the saline-alkali soil.
Compared with the prior art, the mixing device and the repairing method for the saline-alkali soil based on the fly ash have the advantages that the stirring mechanism is arranged, so that materials can be smashed and dispersed before mixing, the mixing effect is improved, three materials are not added at one time in the mixing process and are added sequentially according to a certain sequence, the fly ash is preferentially added, the organic materials are added immediately, and finally the chemical modifier is added, the mixing efficiency can be further improved, the mixing time is shortened, when the fly ash and the organic materials are mixed, the jet head of the one-way valve is required to jet air, the contact area is increased, the full mixing of the fly ash and the organic materials is promoted, the jet head of the one-way valve stops working, the chemical modifier can be automatically added, and after the mixing is completed and the materials are discharged, the mixing barrel can be comprehensively cleaned.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of a front view of a mixing drum of the present invention;
FIG. 3 is a cross-sectional view of a front view of the dual screw mixing mechanism of the present invention;
FIG. 4 is an enlarged schematic view of the structure A in FIG. 3 according to the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 3B according to the present invention;
FIG. 6 is a cross-sectional view of a front view of the agitator of the present invention;
FIG. 7 is a cross-sectional view of a front view of the stirring mechanism of the present invention;
FIG. 8 is a cross-sectional view of a side view of a mixing drum of the present invention;
fig. 9 is a top view of the gear and ring gear of the present invention.
Wherein 1, a bracket, 2, a mixing drum, 3, a rotating part, 4, a mixing drum, 401, a cavity A, 402, a cavity B, 403, a cavity C, 404, a mixing area, 5, a sieving hole, 6, a mixing mechanism, 601, a mixing rod, 602, a mixing blade, 603, a gear, 604, a toothed ring, 7, a double-screw mixing mechanism, 701, a screw shaft, 702, a channel A, 703, a screw blade, 704, a fixed ring, 705, a grinding wheel, 8, a one-way valve jet head, 9, a fixed pipe, 901, a channel B, 902, a channel C, 903, a channel D, 10, a drainage tube, 11, a gas transmission mechanism, 111, a gas transmission pipe A, 112, a gas transmission pipe B, 113, a gas inlet pipe, 12, a piston group A, 121, a piston A, 122, a push rod A, 123, a sliding block, 13, a piston group B, 131, a piston B, 132, a push rod B, 133, a fixed block, 134, a sleeve, 14 and a feed hopper.
Detailed Description
As shown in fig. 1-9, a mixing device for repairing saline-alkali soil based on fly ash and a repairing method thereof, comprising a bracket 1 and a mixing barrel 2 arranged on the bracket 1, wherein the mixing barrel 2 is fixedly connected with the bracket 1, and the bottom end of the mixing barrel 2 is provided with a barrel bottom cover which can be opened and closed, and the device is characterized in that: one end of the mixing drum 2 is rotatably provided with a rotating member 3, a stirring drum 4 is fixedly arranged in the rotating member 3, one ends of the mixing drum 2 and the stirring drum 4 are conical, a feed hopper 14 is fixedly connected to the inside of the rotating member 3, one end of the feed hopper 14 is communicated with the stirring drum 4, fly ash and organic materials are delivered into a stirring area 404 through the feed hopper 14, the bottom end of the stirring drum 4 is provided with a plurality of screening holes 5, a cavity A401, a cavity B402, a cavity C403 and a stirring area 404 are arranged in the stirring drum 4, the cavity C403 is communicated with the stirring area 404, the outer surface of the stirring drum 4, the inner bottom wall of the cavity A401 is inclined, a feeding pipe is arranged on the upper surface of the stirring drum 4 and is communicated with the cavity A401, a chemical modifier is injected into the cavity A401 through the feeding pipe, the cavity A401 is used for loading the chemical modifier, the stirring area 404 is internally provided with a stirring mechanism 6 used for adding fly ash and organic materials, the stirring area 404 is internally provided with a stirring mechanism 6 used for stirring, the stirring mechanism 6 comprises a stirring rod 601, a plurality of groups of stirring blades 602, a motor, two gears 603 and a toothed ring 604 are longitudinally distributed, a plurality of motor 403 are sequentially arranged, the radius of the stirring blades 602 are sequentially connected with one end of the stirring blades 601 through a plurality of sets of motor 403 and a fixed support, one end 601 is fixedly connected with one end of the stirring rod 601 through the fixed support, one end 601 is fixedly connected with the stirring rod 601, one end is fixedly by the motor 403, one end 601 is fixedly connected with one end of the stirring rod 601 through the motor, and one end 601 in turn, and one end 601 is fixedly connected with one end 601 through one end 601 and the other 601 and one end and respectively, another gear 603 rotates through the axis of rotation with agitator 4 to be connected, and with ring gear 604 meshing connection, ring gear 604 and agitator 4 fixed connection, two gears 603 meshing connection drive puddler 601 through the motor and rotate, and puddler 601 can drive a plurality of groups stirring vane 602 rotation, smash fly ash and organic material, and puddler 601 can drive agitator 4 through gear 603 and ring gear 604 again and rotate, improves mixing stirring efficiency.
The double-screw mixing mechanism 7 for mixing and stirring is arranged in the mixing barrel 2, the double-screw mixing mechanism 7 comprises two inclined screw shafts 701 and two screw blades 703 with opposite screw directions, the length of one screw shaft 701 is larger than that of the other screw shaft 701, channels A702 are arranged in the two screw shafts 701, the outer surface of one screw shaft 701 is communicated with a plurality of one-way valve air injection heads 8 for discharging air in one channel A702, the bottom end of the other screw shaft 701 is provided with one-way valves A, the double-screw mixing mechanism 7 also comprises an annular fixed ring 704 and two grinding wheels 705, the inner wall of the fixed ring 704 is subjected to anti-skid treatment, the two grinding wheels 705 are fixedly connected with the two screw shafts 701 and are in tight contact with the fixed ring 704, the two screw shafts 701 do circular motion with the central shaft of the mixing barrel 4, and the two grinding wheels 705 and the fixed ring 704 are subjected to rotation through friction force;
Two fixed pipes 9 are fixedly arranged on the outer side of the stirring barrel 4, one ends of the two fixed pipes 9 are respectively and rotatably connected with the two screw shafts 701, a channel B901, a channel C902 and a channel D903 which are sequentially communicated are arranged in the two fixed pipes 9, the two channels D903 are respectively communicated with the two channels A702, a drainage tube 10 for guiding a chemical modifier into one of the channels D903 is communicated between the stirring barrel 4 and one of the fixed pipes 9, a gas conveying mechanism 11 for conveying gas into the other channel B901 is fixedly arranged in the stirring barrel 4, the gas conveying mechanism 11 comprises a gas conveying pipe A111, a gas conveying pipe B112 and a gas inlet pipe 113, the gas conveying pipe A111 and the gas conveying pipe B112 are fixedly connected with the stirring barrel 4, one end of the gas conveying pipe A111 is communicated with one of the channels B901, the other end of the gas conveying pipe A111 is rotatably connected with the gas inlet pipe 113, the other end of the gas inlet pipe 113 is used for being connected with an external gas pump, the two ends of the gas conveying pipe B112 are respectively communicated with the two channels B901, the air inlet pipe 113 is inflated by the air pump, so that the air enters the air inlet pipe A111 and the air inlet pipe B112, the piston A121 and the piston B131 move, the air inlet pipe 113 is pumped by the air pump, the piston A121 and the piston B131 are reset, a piston group A12 for controlling the opening or closing of the drainage mechanism and a piston group B13 for controlling the opening or closing of the air inlet mechanism 11 are respectively arranged in the two fixed pipes 9, the piston group A12 comprises an integrally formed piston A121, a push rod A122 and a slide block 123, the piston A121 is in sliding connection with a channel D903 which is close to the piston A121, the slide block 123 is in sliding connection with a channel C902 which is close to the piston A121, when the slide block 123 is in contact with one inner side wall of the channel C902, the piston A121 can prevent a chemical modifier in the drainage pipe 10 from entering the channel D903, and when the slide block 123 is moved to be in contact with the other inner side wall of the channel C902, the piston A121 can move along with the piston and enables chemical modifier in the drainage tube 10 to enter the channel D903, the piston group B13 comprises a piston B131, a push rod B132, a fixed block 133, a sleeve 134 and a spring, the piston B131 is in sliding connection with the channel B901 close to the piston B131, the piston B131 is in close contact with the piston B, one end of the push rod B132 is fixedly connected with the piston B131, the other end of the push rod B132 is in sliding connection with the sleeve 134, the fixed block 133 is fixedly connected with the inner wall of the channel B901 close to the piston B133, the fixed block 133 is fixedly connected with the sleeve 134, two ends of the spring are respectively fixedly connected with the fixed block 133 and the push rod B132, and when the gas delivery mechanism 11 delivers gas into the channel B and pushes the piston B131 to move into the channel C902, the gas sequentially passes through the channel B901, the channel C902 and the channel D903 and enters one of the channels A702.
A restoration method for restoring saline-alkali soil based on fly ash comprises the following steps:
s1, comprehensively detecting target saline-alkali soil, including parameters of soil salinity content, pH value, soil texture such as sand grain, powder grain, clay proportion, nutrient status nitrogen, phosphorus, potassium and trace element content and groundwater level, wherein the parameters can be measured by a professional soil detection instrument and method, such as measuring the soil salinity by adopting a conductivity meter, measuring the pH value by a pH meter, determining the texture type by a soil texture analyzer, acquiring accurate data information, evaluating the condition of the saline-alkali soil according to detection results, determining the salinization degree, the fertility level and main problems, so as to pertinently formulate a restoration scheme, for example, if the soil salinity content is too high and is strong in alkalinity and the nutrients are extremely deficient, taking measures for reducing the salinity, adjusting the pH value and supplementing the nutrients into consideration;
S2, selecting fly ash with proper sources, ensuring that the fly ash meets relevant quality standards, for example, the heavy metal content is not out of standard, screening the fly ash, removing large particle impurities and unburnt carbon particles in the fly ash, screening the fly ash by using vibrating screen equipment, and ensuring that the fly ash particles are more uniform and fine, so that the fly ash is favorable for subsequent mixing with other materials and dispersion in soil;
S3, preparing organic materials such as decomposed compost, stable manure or green manure, if the organic materials are compost, ensuring that the organic materials are sufficiently decomposed to avoid harmful gases generated by fermentation in soil or consume oxygen in the soil, judging the decomposition degree of the organic materials by detecting indexes of temperature, smell, color and texture of the compost, and crushing the organic materials to ensure that the particle size of the organic materials is moderate;
And S4, selecting a proper chemical modifier according to the detection result of the saline-alkali soil, selecting a gypsum calcium sulfate modifier to neutralize the alkalinity if the alkalinity of the soil is too high, reducing the alkalization degree of the soil by ion exchange effect if the sodium ion content in the soil is too high, selecting a corresponding chelating agent to treat under special conditions such as the condition that the soil contains too much heavy metal ions, and preparing other possibly needed chemical reagents such as microbial agents for regulating the microbial environment of the soil.
S5, determining the mixing proportion of the fly ash, the organic material and the chemical modifier according to the specific condition of the saline-alkali soil, wherein the addition amount of the fly ash can account for 30-50% of the total amount of the mixed material, the organic material accounts for 30-40%, and the chemical modifier accounts for 10-20%
When the stirring device is used, firstly, the fly ash is put into a stirring area 404 of a stirring barrel 4 through a feed hopper 14, then, gas is injected into an air inlet pipe 113 through an air pump, the gas in the air inlet pipe 113 enters an air pipe A111 and an air pipe B112, the gas in the air pipe B112 enters a channel B901 close to a piston group A12, at the moment, the air pressure in the channel B901 is increased, the gas pushes a sliding block 123 to move so as to enable the piston group A12 to move, when the sliding block 123 of the piston group A12 moves to a position shown in fig. 4, the sliding block 123 abuts against one side surface of a channel C902, so that the piston group A12 does not move any more, at the moment, a piston A121 blocks the inlet end of a fixed pipe 9 close to the piston group A121, and then, the chemical modifier is injected into a cavity A401 of the stirring barrel 4 through an inlet pipe, wherein the chemical modifier can be gypsum calcium sulfate modifier; then, a part of the liquid gypsum improver enters the drainage tube 10, and the chemical improver does not enter the fixing tube 9 through the inlet end of the fixing tube 9 because the piston A121 blocks the inlet end of the fixing tube 9, and the gas in the gas transmission tube A111 also enters the other passage B901, so that the gas can overcome the elastic force of the spring at the fixing block 133 by increasing the output power of the gas pump, the spring starts to compress and the piston B131 moves, and when the piston B131 moves into the passage C902 close to the piston B131, the passage B901, the passage C902, the passage D903 and the passage A702 of one of the screw shafts 701 sequentially pass through the passage D903, and gas is ejected from a plurality of one-way valve jet heads 8.
Then, the stirring rod 601 is driven by the motor to rotate, the stirring rod 601 drives the plurality of groups of stirring blades 602 to rotate, the stirring blades 602 break up the fly ash, the fly ash with small particles can fall into the mixing drum 2 through the plurality of screening holes 5 at the bottom end of the stirring drum 4, the large particles and the agglomerated fly ash remain in the stirring drum 4 to be broken or broken up, then the organic materials are thrown into the stirring area 404 through the feed hopper 14 to be broken up, the organic materials can be decomposed compost, manure or green manure, and the organic materials with small particles can enter the mixing drum 2 through the screening holes 5, and the condition needs to be explained that the fly ash is easy to agglomerate in a natural state, because the specific surface area is large, and stronger van der waals force exists between the particles, so that the fly ash is mutually attracted to be aggregated into clusters, in the production and storage process, the fly ash can absorb water in air, the phenomenon of agglomeration is further caused, the existence of the agglomeration bodies can influence the performance of the fly ash in saline-alkali soil restoration, the organic materials and the chemical modifier need to be mixed with the fly ash in the well-alkali soil restoration, and the mixing condition needs to be well-dispersed in the soil, and the condition needs to be well-mixed and the mixed state of the fly ash can be well-broken up, and the mixed materials can be well-distributed in the soil can be further improved, and the condition needs to be well-distributed in the soil is greatly, and the condition needs to be well-improved, and the mixed condition needs to be well and the mixed and the soil is well mixed and the mixed with the soil is well-broken up.
Immediately when the stirring rod 601 rotates, one gear 603 is driven to rotate, the other gear 603 is driven to rotate by one gear 603, the toothed ring 604 is meshed with the toothed ring 604, the toothed ring 604 drives the stirring barrel 4 to rotate, the stirring barrel 4 can shake in the rotating process because the inner bottom wall of the cavity A401 is inclined, the purpose of shaking and stirring is realized, the stirring rod is more uniform and is beneficial to subsequent uniform mixing, centrifugal force is generated in the rotating process, the discharge of materials in the stirring barrel 4is accelerated, simultaneously, the stirring barrel 4 can drive the two fixing pipes 9 to rotate by taking the stirring barrel 4 as the center, the two fixing pipes 9 respectively drive the two screw shafts 701 to circularly move to comprehensively mix and stir the materials, the two spiral shafts 701 can respectively drive the two grinding wheels 705 to rotate along the fixed ring 704 in the process of circular motion, the two grinding wheels 705 can rotate in the process of circular motion by utilizing the friction force between the two grinding wheels 705 and the fixed ring 704, so that the two spiral shafts 701 rotate, the two spiral shafts 701 respectively drive the two spiral blades 703 to rotate, on one hand, the stirring area is more attached to the mixing drum 2 due to the opposite spiral directions of the two spiral blades 703 and the inclined arrangement, on the other hand, the two spiral shafts 701 generate axial pushing forces in different directions on materials when rotating, when the two spiral shafts 701 work simultaneously, the materials are forced to circulate up and down in the mixing drum 2 under the action of two opposite axial forces, the longer spiral blades 703 can more effectively convey the materials at the bottom upwards due to the wider coverage range, the short spiral blade 703 assists in pushing the material in a relatively short area, so that the material forms a more complex path in the up-down circulation process, the up-down circulation can effectively prevent the material from piling up at the bottom of the mixing barrel 2, ensure the material to be fully mixed in the whole space, shorten the mixing time, and the spiral shaft 701 can also drive the plurality of check valve jet heads 8 to rotate in the rotating process, so that the gas sprayed by the check valve jet heads 8 can blow off the fly ash, and prevent the fly ash from agglomerating in the mixing barrel 2 again, thereby further shortening the mixing time.
Then, after the fly ash and the organic material are mixed, the air inlet pipe 113 is pumped through the air pump, the air pump can be an air-filling and air-pumping dual-purpose pump, at this time, because the air pipe A111 is communicated with the air pipe B112, the air pipe A111 is in a negative pressure state, the air pipe B112 is in a negative pressure state, the push rod B132 and the piston B131 are pushed to reset by the elasticity of the spring, at this time, the air jet head 8 of the one-way valve stops working, when the air pipe B112 is in a negative pressure state, the piston group A12 is sucked to the original position by utilizing the negative pressure, the slide block 123 is propped against the other inner side wall of the channel C902, at this time, the piston A121 opens the inlet end of the fixed pipe 9, so that the chemical modifier in the cavity A401 sequentially passes through the drainage tube 10, the channel B901 and the channel A702 of the fixed pipe 9, at this time, the one-way valve is opened, the chemical modifier flows out from the channel A702 of the shorter screw shaft 701 and is mixed with the fly ash and the organic material, because the chemical modifier flows out from the channel at the bottom end of the shorter screw shaft 701, the modifier can be accurately put into a specific area of the mixing barrel 2, which is usually a part with relatively active material mixing, because the shorter screw shaft 701 can stir peripheral materials during operation, the chemical modifier can be ensured to be contacted with the materials which are being mixed vigorously after being put into the mixing barrel 2, the situation that the local concentration of the modifier is too high or the modifier cannot participate in the mixing in time due to random diffusion in the mixing barrel 2 is avoided, the mixing efficiency of the chemical modifier, the fly ash and the organic materials is improved, after the mixing is finished, the materials are discharged by opening the barrel bottom cover at the bottom of the mixing barrel 2, part of the materials are adhered into the mixing barrel 2 after being mixed because the added chemical modifier is in a liquid state, at the moment, the air is filled into the air inlet pipe 113 through the air pump, the one-way valve jet head 8 jets air, the inner wall of the mixing drum 2 and the outer side surface of the stirring drum 4 can be cleaned in the circumferential rotation and autorotation process.
Finally, it should be noted that, the three materials are preferably added in the mixing process, namely, fly ash and organic materials are added immediately, and finally chemical modifier is added, because the fly ash and the organic materials are preferably mixed, viscous components in the organic materials, such as humus and cellulose, can be utilized to better agglomerate fly ash particles together, the organic materials play a role of a binder to wrap or connect the fly ash particles together, a relatively stable aggregate structure is formed, the aggregate structure is beneficial to increasing the porosity of soil, improving the air permeability and the water permeability of the soil, providing a good physical environment for the growth of the following plant root system, fly ash is easy to generate when being singly present, the flying trend of the fly ash is effectively inhibited after the fly ash is mixed with the organic materials, meanwhile, the mixed material structure is relatively compact, the loss of the materials can be reduced in the process of transportation, the storage and the subsequent addition of the chemical modifier, the fly ash generally takes the alkaline role of a binder, the organic materials can generate substances such as organic acid and the like in the process, the organic materials can be mixed together to a certain extent, the pH value is improved, the pH value of the buffer effect can be further improved, the chemical modifier can be greatly changed, and the chemical modifier can be prevented from being greatly changed when the pH value is relatively stable, and the chemical modifier is also beneficial to the change.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
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