CN110586270A - Soil breaker with screening function - Google Patents
Soil breaker with screening function Download PDFInfo
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- CN110586270A CN110586270A CN201910732475.2A CN201910732475A CN110586270A CN 110586270 A CN110586270 A CN 110586270A CN 201910732475 A CN201910732475 A CN 201910732475A CN 110586270 A CN110586270 A CN 110586270A
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- soil
- box body
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- box
- crushing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
- B02C18/12—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged below container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/18—Knives; Mountings thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/005—Extraction of vapours or gases using vacuum or venting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Crushing And Pulverization Processes (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a soil crushing device with a screening function, which belongs to the technical field of environmental remediation and comprises a box body, wherein the top of the box body is provided with a feed hopper and a separation assembly, the separation assembly is arranged in the box body and divides the interior of the box body into an upper cavity and a lower cavity, an air guide part is arranged on the inner wall of the upper cavity of the box body in a surrounding manner and is connected with a steam generator arranged on the outer side of the box body through an air conveying pipe, the box body is provided with an air suction pump for extracting air in the upper cavity of the box body, the crushing assembly is arranged in the lower cavity of the box body and is driven by a motor to rotate for crushing objects. The invention realizes that the large cohesive soil is smashed and sieved at the same time, in order to improve the smashing efficiency, the content of volatile liquid in the soil is reduced by a steam extraction mode to improve the smashing efficiency and repair the soil, and the processed soil particles can be fully contacted with chemical repair agents.
Description
Technical Field
The invention belongs to the technical field of environmental remediation, and particularly relates to a soil crushing device with a screening function.
Background
Soil pollution has great influence on human production and life, the soil pollution area of cultivated land in China at present accounts for about one fifth of the cultivated land area in China, the soil pollution treatment mainly comprises physical, chemical, biological or combined methods, the soil is almost required to be pretreated in the soil treatment and restoration process to enable the soil to be treated to be crushed, if the polluted soil is repaired, a restoration agent cannot be effectively mixed with the soil due to uneven soil particle size, the restoration effect cannot be guaranteed, the existing crushing equipment can only crush dried massive polluted soil into small pieces which cannot reach powder or finer particle size, and in addition, large-particle soil crushed by conventional equipment still needs to be subjected to additional restoration treatment. Meanwhile, some soil restoration and treatment projects (such as solidification and stabilization treatment) have requirements on the soil particle size, and conventional pretreatment crushing equipment can only crush the soil and cannot ensure the soil particle size.
Disclosure of Invention
The invention aims to provide a soil crushing device with a screening function, which can realize that large cohesive soil is crushed and screened simultaneously, a certain restoration is formed on the soil in the crushing process, and a medicament is ensured to be fully contacted with the soil when a chemical restoration mode is adopted.
The technical scheme adopted by the invention for realizing the purpose is as follows: soil breaker with screening function includes:
the top of the box body is provided with a feed hopper,
the separation component is arranged in the box body and divides the interior of the box body into an upper cavity and a lower cavity, the inner wall of the upper cavity of the box body is provided with a gas guide piece in a surrounding manner, the gas guide piece is connected with a steam generator arranged on the outer side of the box body through a gas pipe, the box body is provided with a suction pump for pumping gas in the upper cavity of the box body,
the crushing subassembly is located box lower part cavity, and the crushing subassembly is by motor drive rotation to the object breakage, and the crushing subassembly below is equipped with the sieve and is used for screening broken thing granule, and box one side is equipped with and is used for discharging the particulate matter through the sieve screening.
The invention utilizes steam extraction technology to carry out steam extraction on the caking soil, realizes the gas exchange speed between the gas in the soil pores and the gas outside the box body 10, reduces the content of volatile liquid in the soil, and utilizes the crushing component to crush the caking soil containing lower volatile liquid, thereby improving the crushing rate and the efficiency, the particle size of crushed particles of the caking soil after the steam extraction treatment in the crushing process is smaller, which is beneficial to sieving through a sieve plate and also avoids the adhesion between the soil particles and the crushing component in the crushing process, compared with the conventional soil crushing process, the invention has the advantages that certain volatile liquid crushed particles in the soil still can be bonded, and part of the volatile liquid crushed particles are bonded with a crushing cutter body, and the contact effect of the crushed soil particles and the soil particles in the chemical agent treatment process is better than that of the soil particles obtained by the conventional crushing, the steam extraction before the soil is crushed is based on the fact that the soil is a porous medium, the steam is input into the soil, the exchange rate of pore gas and the atmosphere is accelerated by controlling the temperature and the pressure of the input steam and adopting a gas extraction mode of an air pump to extract gas, so that the conversion of volatile or semi-volatile organic matters in the porous medium from a solid phase and a liquid phase to a gas phase is promoted, evaporable liquid in the soil is removed, the soil pores are enlarged, the water content of the soil is reduced, the soil crushing efficiency is improved, and the effect of reducing the particle size of obtained particles is achieved.
The invention controls the temperature and the air pressure of steam input into the upper chamber in the box body through a relational formula of the saturated steam pressure and the temperature of liquid, thereby realizing the acceleration of the exchange rate of soil pore gas and atmosphere by regulating the steam input temperature and the air pressure in the box body according to the water content of different crushed soil.
Saturated vapor pressure of liquid and temperature formula:
wherein A, B, C is constant related to temperature, T is temperature (K), P is saturated vapor pressure (Pa), wherein, when the temperature is 20 deg.C, the vapor pressure is more than 133.3Pa, and the liquid in the formula is evaporable liquid contained in soil.
Specifically, the box body is provided with a control panel for controlling the opening and closing of the separation assembly and the starting/stopping of the motor. The control panel direct control separates the subassembly to open and shut and realizes falling into the caking soil of box upper portion intracavity through steam extraction and carry out soil crushing treatment in the box lower part chamber, the control accessible control panel to the broken efficiency of soil and the broken particle size of granule comes the rotational speed of control motor to realize, wherein the screening of particle size still need change the sieve that different sieve meshes reached and realize, steam generator's parameter control can directly operate on steam generator, also can select to carry out the parameter modification that program editing realized control panel control steam generator after being connected steam generator and control panel.
Specifically, the separation assembly comprises two rotary plates, the rotary plates are horizontally arranged in the box body oppositely, one side face of each rotary plate is hinged to the inner wall of the box body, electromagnets are arranged oppositely to the two rotary plates, and the electromagnets are connected with the control panel through connecting wires. Utilize to separate the subassembly to carry out upper and lower partition to box inner space, to falling into the operating space partition that the caking soil in the box carries out steam extraction and broken handle process, compare in prior art directly carry out soil broken handle's mode, choose for use to separate the subassembly to handle soil in the box step by step and can effectively reduce the volatility of broken soil or the semi-volatile organic matter of broken soil from the solid phase and the transformation of liquid phase to gaseous phase and reduce the pollution degree of broken soil, improve follow-up soil crushing efficiency and effect simultaneously. Specifically, the control panel is used for controlling the energization of the two electromagnets, the two rotary plates are provided with the electromagnets, the electromagnets are magnetically adsorbed to separate the inner space of the box body, and when soil in the upper cavity of the box body needs to be placed in the lower cavity of the box body, the energization current of the electromagnets is reduced to enable the rotary plates to rotate downwards under the action of gravity to enable the gap between the two rotary plates to be enlarged so as to enable the soil to fall.
Specifically, the air guide piece is a sponge, the structure shape of the air guide piece is like a triangular prism, one cylindrical surface is an arc surface, any one of two planes of the air guide piece is fixedly connected with the inner wall of the box body, and the surface of the air guide piece is coated with a cloth layer. Choose the sponge piece for use as the air guide, the porous structure that utilizes the sponge to exist realizes carrying out steam extraction work with steam dispersion in the sponge and by the sponge outwards output everywhere to the indoor soil in box upper portion cavity, and establish the air guide into the triangular prism form, wherein two planes are right angle included angle, another inclined plane is the arc inclined plane, make most gaseous outwards emerge from the arc surface, and choose for use the arc surface structure to be favorable to caking soil to play certain spacing effect to soil when taking place the contact with the air guide, it is less at its porosity on air guide surface coated cloth layer, be used for preventing that soil particles from blockking up the sponge pore and causing inside steam can't normally input the box.
Specifically, broken subassembly includes cylindric cylinder, and two column faces extend outward about the cylinder has the tourus, encircles on the annular cylinder of cylinder and lays broken piece, and the cylinder bottom surface is connected with the motor through coaxial pivot. The inside a plurality of broken subassemblies that are equipped with of box, the rotation through the broken subassembly of motor control comes to carry out broken handle to the lower soil piece of volatile liquid content, drives the cylinder rotation through the motor and drives broken piece rotation, destroys the soil structure through the contact of rotatory broken piece and soil piece, reaches the kibbling purpose of soil.
Specifically, the top surface of the column body is provided with a frustum of a cone, and a first cutter body is arranged around the conical surface of the frustum of the cone. The top surface of the cylinder is provided with the frustum to guide the soil blocks falling on the top surface of the cylinder, so that the soil blocks are enabled to leave the top surface of the cylinder, and meanwhile, the conical surface of the frustum is provided with the first cutter body to break the soil blocks staying on the top surface of the cylinder.
Specifically, broken piece includes the connecting plate, and the connecting plate is connected with the second cutter body rather than perpendicular setting, and is connected with the third blade of three horn shapes between connecting plate and the second cutter body, and second cutter body and cylinder axis parallel arrangement, second cutter body bottom surface are less than cylinder bottom surface level, and the connecting hole has been seted up on the connecting plate surface and has been used for passing through fastener and cylinder side fastening. Utilize the connecting plate to realize fixing second cutter body and cylinder side, rotatory and the contact formation of soil piece is cuted broken soil through rotatory second cutter body to set up the third blade and realize that the broken effect of shearing causes the soil body gradation to change in the broken process of soil, change soil piece own structure, soil piece is broken promptly.
Specifically, the air pump is arranged in the box body through an air inlet of an air pipe to extract air in a cavity at the upper part of the box body, and the air inlet of the air pipe is provided with a filter screen. The gas in the box body is extracted through the air pump, volatile or semi-volatile organic compounds dissolved in steam are quickly discharged out of the soil, the soil restoration effect is achieved, the content of volatile liquid in the soil is reduced to improve the soil crushing efficiency, and a filter screen is arranged at the air inlet end to prevent soil particles from being extracted and discharged.
Specifically, the bottom surface of the box body is provided with a rolling piece for improving the movement flexibility of the equipment, and the gas pipe is provided with a control valve and is convenient for controlling steam input.
Compared with the prior art, the invention has the beneficial effects that: the invention utilizes steam extraction technology to carry out steam extraction on the caking soil, realizes the gas exchange speed between the gas in the soil pores and the gas outside the box body, reduces the content of volatile liquid in the soil, and then utilizes the crushing component to crush the caking soil, thereby improving the crushing rate and the efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a soil breaking device having a sieving function according to the present invention;
FIG. 2 is a schematic view of the inside of the soil breaking device with screening function of the present invention;
FIG. 3 is a schematic view of a crushing assembly;
FIG. 4 is a schematic view of the crushing member configuration;
FIG. 5 is a schematic view of the air guide;
fig. 6 is a schematic view of a partitioning assembly.
Description of reference numerals: 10-a box body; 11-a control panel; 12-a rolling member; 13-a discharge pipe; 20-a feed hopper; 30-a suction pump; 40-a steam generator; 41-gas transmission pipe; 50-a gas guide; 51-a cloth layer; 60-a separation assembly; 61-spin-on plate; 62-connecting lines; 63-an electromagnet; 70-a crushing assembly; 71-a column; 72-frustum; 73-the first blade body; 74-a rotating shaft; 75-a crushing member; 751-a connecting plate; 752-third blade; 753-a second cutter body; 754-connecting hole; 80-sieve plate; 81-motor.
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.
Example 1:
referring to fig. 1 to 6, a soil crushing device with a sieving function includes:
the box body 10, the top of which is provided with a feed hopper 20,
a partition component 60 arranged in the box body 10 to partition the interior of the box body 10 into an upper chamber and a lower chamber, an air guide member 50 is arranged around the inner wall of the upper chamber of the box body 10, the air guide member 50 is connected with a steam generator 40 arranged outside the box body 10 through an air conveying pipe 41, the box body 10 is provided with an air pump 30 for pumping the air in the upper chamber of the box body 10,
crushing subassembly 70 locates box 10 lower part cavity, and crushing subassembly 70 is driven rotatoryly by motor 81 and is broken the object, and crushing subassembly 70 below is equipped with sieve 80 and is used for sieving broken thing granule, and box 10 one side is equipped with and is used for discharging the particulate matter through sieve 80 sieve.
The invention utilizes steam extraction technology to carry out steam extraction on the caking soil, realizes the gas exchange speed between the gas in the soil pores and the gas outside the box body 10, reduces the volatile liquid content of the soil, and utilizes the crushing component 70 to crush the caking soil, thereby improving the crushing rate and the efficiency, the particle size of the crushed particles of the caking soil after the steam extraction treatment in the crushing process is smaller, which is beneficial to being screened by the sieve plate 80, and also avoids the adhesion of the soil particles and the crushing component 70 in the crushing process, compared with the conventional soil crushing process, the crushed particles with certain water content in the soil still can be bonded, and part of the crushed particles are bonded with the crushing cutter body, the contact effect of the crushed soil particles with the soil particles in the chemical agent treatment process is better than that of the soil particles obtained by the conventional crushing process, wherein the steam extraction process before the soil crushing process is based on the soil as a porous medium, through with in the steam input soil, through control input steam temperature and control atmospheric pressure and adopt aspiration pump 30 to carry out the mode of gas extraction to accelerate pore gas and atmospheric exchange rate, and then promote the conversion of volatility or semi-volatile organic matter from solid phase and liquid phase to gaseous phase in the porous medium, get rid of the liquid that can evaporate in the soil, but the evaporation pollutant and the moisture in the soil are got rid of together soon, and enlarge soil pore, reduce volatile liquid content in the soil, improve the broken effect that efficiency of soil and the particle size that obtains the particulate matter reduces.
The invention controls the temperature and the air pressure of the steam input into the upper chamber in the box body 10 through the relation formula of the saturated steam pressure and the temperature of the liquid, thereby realizing the acceleration of the exchange rate of the pore gas of the soil and the atmosphere by regulating the steam input temperature and the air pressure in the box body 10 according to the water content of different crushed soil.
Saturated vapor pressure of liquid and temperature formula:
wherein A, B, C is constant related to temperature, T is temperature (K), P is saturated vapor pressure (Pa), wherein, when the temperature is 20 deg.C, the vapor pressure is more than 133.3Pa, and the liquid in the formula is evaporable liquid contained in soil.
The box 10 is provided with a control panel 11 for controlling the opening and closing of the partition component 60 and the starting/stopping of the motor 81. The control panel 11 directly controls the opening and closing of the partition component 60 to realize that the caked soil extracted by steam in the upper cavity of the box 10 falls into the lower cavity of the box 10 for soil crushing treatment, the efficiency of soil crushing and the control of particle crushing particle size can be realized by controlling the rotating speed of the motor 81 through the control panel 11, wherein the screening of the particle size is realized by replacing the sieve plates 80 which reach different sieve holes, the parameter control of the steam generator 40 can be directly operated on the steam generator 40, or the parameter modification of the control panel 11 for controlling the steam generator 40 can be realized by editing programs after the steam generator 40 is connected with the control panel 11.
The partition assembly 60 comprises two rotary plates 61, the rotary plates 61 are horizontally and oppositely arranged in the box body 10, one side of the rotary plate 61 is hinged to the inner wall of the box body 10, electromagnets 63 are arranged on the opposite surfaces of the two rotary plates 61, and the electromagnets 63 are connected with the control panel 11 through connecting wires 62. Utilize and separate subassembly 60 to separate from top to bottom the box 10 inner space, to falling into the operating space partition that the caking soil in the box 10 carried out steam extraction and broken handling process, compare in the mode that directly carries out soil broken handling among the prior art, choose for use to separate subassembly 60 and handle soil in the box 10 step by step and can effectively reduce the volatility of broken soil or the conversion of semi-volatile organic matter from solid phase and liquid phase to gaseous phase and reduce the pollution degree of broken soil, improve follow-up soil crushing efficiency and effect simultaneously. Specifically, the energization of the two electromagnets 63 is controlled by the control panel 11, the magnetic attraction formed by the ends of the electromagnets 63 mounted on the two rotary plates 61 is utilized to separate the internal space of the box 10, and when soil in the upper chamber of the box 10 needs to be placed in the lower chamber of the box 10, the energization current of the electromagnets 63 is reduced to enable the rotary plates 63 to rotate downwards under the action of gravity to enable the gap between the two rotary plates 61 to be enlarged, so that the soil falls.
The air guide member 50 is a sponge, and has a structure similar to a triangular prism, wherein one cylindrical surface is an arc surface, any one of two planes of the air guide member 50 is fixedly connected with the inner wall of the box body 10, and the surface of the air guide member 50 is coated with a cloth layer 51. Choose the sponge piece for use as air guide 50, the porous structure that utilizes the sponge to exist realizes carrying out steam extraction work with steam dispersion in the sponge and by sponge outwards output everywhere to the indoor soil in box 10 upper portion cavity, and establish air guide 50 into the triangular prism form, wherein the biplane is right angle contained angle, another inclined plane is the arc inclined plane, make most gaseous outwards emerge from the arc face, and choose for use the arc face structure to be favorable to caking soil to play certain spacing effect to soil when making contact with air guide 50, it is less at its porosity of cloth layer 51 of air guide 50 surface cladding, be used for preventing that soil particles from blockking up the sponge pore and causing inside steam can't normally input box 10.
The crushing assembly 70 comprises a cylindrical column 71, wherein an annular body extends outwards from the upper column surface and the lower column surface of the column 71, crushing members 75 are arranged on the annular column surface of the column 71 in a surrounding mode, and the bottom surface of the column 71 is connected with a motor 81 through a coaxial rotating shaft 74. The inside a plurality of broken subassemblies 70 that is equipped with of box 10, the rotation of controlling broken subassembly 70 through motor 81 carries out broken handle to the soil piece, drives the cylinder 71 rotation and drives broken piece 75 rotation through motor 81, destroys the soil structure through the contact of rotatory broken piece 75 and soil piece, reaches the kibbling purpose of soil.
The top surface of the column 71 is provided with a frustum 72 in the shape of a truncated cone, and the conical surface of the frustum 72 is provided with a first cutter body 73 in a surrounding mode. The soil mass falling on the top surface of the column 71 is guided by the tapered surface 72 of the column 71 to be separated from the top surface of the column 71, and the soil mass staying on the top surface of the column 71 is crushed by the first blades 73 provided on the tapered surface of the tapered surface 72.
The crushing member 75 comprises a connecting plate 751, the connecting plate 751 is connected with a second cutter body 753 which is perpendicular to the connecting plate 751, a triangular third blade 752 is connected between the connecting plate 751 and the second cutter body 753, the second cutter body 753 is parallel to the axis of the cylinder 71, the bottom surface of the second cutter body 753 is lower than the horizontal height of the bottom surface of the cylinder 71, and a connecting hole 754 is formed in the surface of the connecting plate 751 and used for being fastened with the side surface of the cylinder 71 through a fastener. The second cutter body 753 and the side face of the cylinder 71 are fixed through the connecting plate 751, the second cutter body 753 rotating to be in contact with a soil block to shear broken soil, the third blade 752 is arranged to further improve the shearing and breaking effect, soil grading change is caused in the soil breaking process, and the structure of the soil block is changed, namely the soil block is broken.
The air pump 30 is arranged in the box body 10 through an air inlet of an air pipe for extracting the air in the cavity at the upper part of the box body 10, and the air inlet of the air pipe is provided with a filter screen. The gas in the box body 10 is extracted through the air extracting pump 30, volatile or semi-volatile organic compounds dissolved in steam are quickly discharged out of the soil, the soil restoration effect is achieved, the content of volatile liquid in the soil is reduced to improve the soil crushing efficiency, and a filter screen is arranged at the air inlet end to prevent soil particles from being extracted and discharged.
The bottom surface of the box body 10 is provided with a rolling part 12 for improving the moving flexibility of the equipment, and the gas pipe 41 is a gas pipe with a control valve and is convenient for controlling the steam input.
Example 2:
when the soil crushing device with the screening function is actually used:
the electromagnet 63 on the rotary closing plate 61 of the separation component 60 is controlled by the control panel 11 to be electrified to separate the space in the box body 10, the steam generator 40 is controlled to input steam into the box body 10 to preheat the upper cavity of the box body 10, the steam input temperature and the steam pressure are determined according to the content of volatile liquid in the processed soil, the air pump 30 is started to extract the gas in the box body 10 to be discharged outwards, then the soil blocks to be crushed are put into the upper cavity of the box body 10 through the feed hopper 20, the steam generator 40 continuously inputs steam to extract the soil by steam and reduce the content of the volatile liquid in the soil, then the electrifying current of the electromagnet 63 is controlled to enlarge the gap between the two rotary closing plates 61 to enable the soil blocks to fall into the lower cavity of the box body 10 downwards to be crushed by the crushing component 70, the crushed soil is discharged by the discharge pipe 13 after being sieved by the sieve plate 80, the soil particles are screened by the sieve plate 80, so that the soil particles can be ensured to be fully contacted with the chemical agent when a chemical soil remediation mode is adopted subsequently.
Soil crushing test:
the soil crushing operation was performed using the apparatus of example 1 as the experimental group 1, and the soil crushing operation was performed again using the apparatus of example 1 with the steam generator 40 removed as the experimental group 2.
The test condition is that the caked sandy loam with the volume weight of 1.27g/cm is selected3The mass fraction of the sand grains is 78.2%, the water content is 23.4%, and the porosity is 33%, wherein the steam pressure of the steam generator 40 of the experimental group 1 is set to be 0.2MPa, and the steam generator of the experimental group 2 is removed, so that no steam pressure parameter exists, the soil temperature and the water content of the experimental group 1 and the experimental group 2 are respectively tested, and the soil crushing effect is recorded, and the results are shown in the following table.
Tests show that the quality of the soil particles crushed by the equipment of the experimental group 1 is superior to that of the experimental group 2, the reason is that the crushing efficiency and effect of the soil are reduced due to the high water content of the soil of the experimental group 2, the pollution concentration of the soil treated by the experimental group 2 is basically consistent with that of the soil before treatment, and the pollution concentration of the soil treated by the experimental group 1 is obviously reduced.
The control panel 11 selected by the present invention is a control panel produced by siemens, and the specific model may be an OP73 control panel, but is not limited to this model. The steam generator 40 of the present invention has a nominal steam amount of 2.6Kg/h to 32 Kg/h. The rated pressure is 0.2-0.7MPa, and the sponge used by the air guide piece 50 is preferably rubber sponge.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (9)
1. Soil breaker with screening function includes:
a box body (10) with a feed hopper (20) at the top,
the separation component (60) is arranged in the box body (10) and divides the interior of the box body (10) into an upper cavity and a lower cavity, the inner wall of the upper cavity of the box body (10) is provided with an air guide piece (50) in a surrounding manner, the air guide piece (50) is connected with a steam generator (40) arranged on the outer side of the box body (10) through an air conveying pipe (41), the box body (10) is provided with an air pump (30) used for pumping the air in the upper cavity of the box body (10),
broken subassembly (70) is located box (10) lower part cavity, broken subassembly (70) are by motor (81) drive rotation to the object breakage, broken subassembly (70) below is equipped with sieve (80) and is used for sieving broken thing granule, box (10) one side is equipped with and is used for discharging the particulate matter through sieve (80) screening.
2. The soil crushing device with screening function as set forth in claim 1, wherein: and a control panel (11) for controlling the opening and closing of the separation assembly (60) and the starting/stopping of the motor (81) is arranged on the box body (10).
3. The soil crushing device with screening function as set forth in claim 2, wherein: partition subassembly (60) include two rotary plate board (61), rotary plate board (61) level sets up relatively in box (10), rotary plate board (61) one side is articulated with box (10) inner wall, two rotary plate board (61) opposite faces are equipped with electromagnet (63), electromagnet (63) are connected with control panel (11) through connecting wire (62).
4. The soil crushing device with screening function as set forth in claim 1, wherein: the air guide piece (50) is a sponge, the structure shape of the air guide piece is like a triangular prism, one cylindrical surface is an arc surface, any one of two planes of the air guide piece (50) is fixedly connected with the inner wall of the box body (10), and the surface of the air guide piece (50) is coated with a cloth layer (51).
5. The soil crushing device with screening function as set forth in claim 1, wherein: the crushing assembly (70) comprises a cylindrical column body (71), a ring body extends outwards from the upper column surface and the lower column surface of the column body (71), crushing pieces (75) are arranged on the annular column surface of the column body (71) in a surrounding mode, and the bottom surface of the column body (71) is connected with a motor (81) through a coaxial rotating shaft (74).
6. The soil crushing device with screening function as set forth in claim 5, wherein: the top surface of the column body (71) is provided with a frustum cone (72) in a cone frustum shape, and a first cutter body (73) is arranged on the conical surface of the frustum cone (72) in a surrounding mode.
7. The soil crushing device with screening function as set forth in claim 5, wherein: the crushing piece (75) comprises a connecting plate (751), the connecting plate (751) is connected with a second cutter body (753) which is perpendicular to the connecting plate, a triangular third blade (752) is connected between the connecting plate (751) and the second cutter body (753), the second cutter body (753) is parallel to the axis of the cylinder body (71), the bottom surface of the second cutter body (753) is lower than the horizontal height of the bottom surface of the cylinder body (71), and a connecting hole (754) is formed in the surface of the connecting plate (751) and used for being fastened with the side surface of the cylinder body (71) through a fastener.
8. A soil breaking device with screening function according to any one of claims 1 to 7, wherein: the air pump (30) is arranged in the box body (10) through an air pipe inlet to pump air in a cavity at the upper part of the box body (10), and the air pipe inlet is provided with a filter screen.
9. A soil breaking device with screening function according to any one of claims 1 to 7, wherein: the rolling piece (12) is arranged on the bottom surface of the box body (10), and the air conveying pipe (41) is provided with a control valve.
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