CN218775116U - Net cylinder type sandy soil treatment device - Google Patents

Abstract

The application relates to a net drum type sand treatment device, which comprises a drum stirrer, a net drum sand separator and a base which are mutually communicated, wherein the base is provided with a driving device for driving the drum stirrer and the net drum sand separator to rotate along the circumferential direction; one end of the drum mixer, which is far away from the screen drum sand-soil separator, is provided with a feed hopper for throwing in building residue soil and water, and the drum mixer is used for mixing the building residue soil and the water to form slurry; a first filter screen cylinder and a second filter screen cylinder are sequentially arranged on the outer peripheral wall of the screen cylinder sand-soil separator from inside to outside, and the filter screen cylinders are used for filtering slurry; the flowing soil filler comprises sand grains, powder sand, clay, hydraulic material and water which are proportioned according to a certain proportion, thereby realizing the impurity filtration of the building residue soil and ensuring the stable quality of the flowing filler.

Description

Net cylinder type sandy soil treatment device

Technical Field

The application relates to the technical field of recycled building materials, in particular to a net cylinder type sandy soil treatment device.

Background

In recent years, a large amount of building muck is generated in the process of building various buildings, and the building muck is not processed in time and is randomly stacked, so that great harm is generated to air, water areas and soil. In order to realize resource recycling of the building residue soil, the building residue soil is generally subjected to filling, building and transformation into greening soil. The traditional treatment method for filling is to directly add water, cement, lime and other materials into the building residue soil and stir the materials uniformly to form the fluidized filling. Because the sand and soil components in the building residue soil are complex, various performance indexes of the fluidized filler are difficult to ensure by adopting the simple treatment method. In addition, impurities of 45mm or more, such as crushed stones, wood chips, metal, etc., may be mixed into the construction waste, and if they are mixed into the construction waste, the operation of the water pump is hindered when the fluidized packing is conveyed. In addition, organic components such as humus may be mixed in, which may change the pH of the soil and may inhibit the action of the hydraulic material and the admixture.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, realize the impurity filtration of building dregs, guarantee that the fluidization packs the steady quality, this application provides a net section of thick bamboo formula sand processing apparatus. The following technical scheme is adopted:

a net drum type sandy soil treatment device comprises a drum stirrer, a net drum sandy soil separator and a base which are mutually communicated, wherein the base is provided with a driving device for driving the drum stirrer and the net drum sandy soil separator to rotate along the circumferential direction;

a plurality of baffles are distributed on the inner peripheral wall of the drum mixer along the circumferential direction, and the baffles are obliquely arranged along the rotating direction of the drum mixer at a certain angle;

one end of the drum mixer, which is far away from the screen cylinder sand-soil separator, is provided with a feed hopper for inputting building slag soil and hydraulic materials, and the drum mixer is used for mixing the building slag soil and water to form slurry;

a first filter screen cylinder and a second filter screen cylinder are sequentially arranged on the outer peripheral wall of the screen cylinder sand-soil separator from inside to outside, and the filter screen cylinders are used for filtering slurry; the meshes of the first filter screen cylinder are larger than those of the second filter screen cylinder;

one end of the screen cylinder sand-soil separator, which is far away from the drum mixer, is positioned at the lower side and is provided with a first sand discharge port and a second sand discharge port which are respectively communicated with the first filter screen cylinder and the second filter screen cylinder.

Optionally, the drum mixer and the mesh cylinder sand-soil separator are respectively provided with at least one tooth-type guide ring; each tooth-like guide ring is provided with a driving device.

Optionally, the driving device includes a roller and a driving motor arranged on the base, and the roller and the tooth-like guide ring are in meshing transmission;

the driving motor is used for driving the roller to rotate so that the meshed tooth-type guide ring drives the roller stirrer or the net drum sand-soil separator to rotate along the circumferential direction.

Optionally, the net drum sand-soil separator is obliquely arranged at a certain angle with the drum mixer along the horizontal plane;

and a connecting cylinder is arranged between the net cylinder sand-soil separator and the drum mixer.

Optionally, a support frame is arranged on the base and used for fixing the connecting cylinder; and sealing rings are arranged at the connecting ends of the connecting cylinder, the roller stirrer and the net cylinder sand-soil separator.

Optionally, the inclination angle of the net cylinder sand-soil separator is 2-6 degrees.

Optionally, the mesh size of the first filter screen cylinder is set to be 40-50 mm, and the first filter screen cylinder is used for screening sand grains with the grain size of 75-2 mm from slurry;

the mesh size of the second filter screen cylinder is set to be 1 mm-3 mm, and the second filter screen cylinder is used for separating silt with the particle size of 10 mu m-75 mu m and clay with the particle size of less than 10 mu m from slurry.

The fluid soil filler is prepared by applying the net drum type sandy soil treatment device in any one of the above steps; the fluid soil filler comprises sand grains, powder sand, clay, hydraulic materials and water which are mixed according to a certain proportion;

the hydraulic material is gypsum and blast furnace waste slag cement or reduction-period slag which are mixed according to a certain proportion.

Optionally, the content of solid matters formed by mixing sand grains, powder sand and clay in the flowing soil filler accounts for 40-70% of the total amount;

the content of sand grains in the solid content is 0-70%, and the sum of the content of sand powder and the content of clay is 20-100%;

the mixing ratio of the gypsum to the blast furnace waste slag cement or the reduction period slag is 5:5 to 7:3.

optionally, the fluid soil filler further comprises any one or more of a water reducing agent, a cement hardening accelerator, an inorganic thickener, an organic acid and the like.

To sum up, the present application includes the following beneficial effects:

1. the application provides a net section of thick bamboo formula sand processing apparatus, with building dregs intensive mixing become mud to utilize the centrifugal separation principle to screen out great size impurity from the mud, and screen out the sand composition of different particle diameter scope, be used for carrying out the mixture of certain proportion and form the flowing soil filler, can be used to the packing in the city pipe network foundation ditch, the hollow packing in road lower part, the road bed lower part of subway pack etc..

2. The construction waste soil is divided into sand grains, powder sand and clay according to the grain size, and the slurry is mixed according to the property of the fluidized filler required by the actual engineering according to the specified proportion, so that the stable quality can be ensured, and foreign matters such as broken stones, wood chips, scrap iron and the like can not be mixed in the slurry to block the pumping of the fluidized filler.

3. The fluidized soil filler is added with blast furnace waste slag cement or reduction-period slag and gypsum as hydraulic materials, and the required design strength can be achieved after the fluidized filler is solidified by adjusting the proportion of each component and the addition amount of the hydraulic materials.

Drawings

FIG. 1 is a schematic plan view of a mesh drum type sandy soil treatment device of the present embodiment;

FIG. 2 is a schematic side view of the net drum type sandy soil processing device of the embodiment;

FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 5 is a side sectional view of the screen cylinder sand-soil separator of the embodiment.

Description of reference numerals: 1. a drum mixer; 2. a sand-soil separator of the net cylinder; 3. a first drum; 4. a feed hopper; 5. a draft tube; 6. a first toothed guide ring; 7. a roller; 8. a base; 9. a baffle plate; 10. a first filter screen drum; 11. a second screen cylinder; 12. a net drum main body; 13. a front barrel; 14. a rear cylinder; 15. a connecting cylinder; 16. a support frame; 17. a first sand discharge port; 18. a second sand discharge port; 19. a second toothed guide ring; 20. a second roller.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a net barrel type sandy soil treatment device and a mobile soil filler.

As shown in figures 1 and 2, the net drum type sand treatment device comprises a roller stirrer 1 arranged at the front and a net drum sand separator 2 arranged at the back, both of which are fixed on a base 8, and the roller stirrer 1 and the net drum sand separator 2 are communicated in series through a connecting drum 15.

The drum mixer 1 is composed of a first drum 3 and a feed hopper 4 communicated with the first drum via a guide cylinder 5, a first tooth-like guide ring 6 is arranged on the first drum 3, and a driving device is arranged on a base 8 and used for driving the first tooth-like guide ring 6 so that the first drum 3 is rotatably supported on the base 8.

The sand-soil separator 2 comprises a second roller 20, a first filter screen cylinder 10 and a second filter screen cylinder 11 which are sequentially sleeved on the second roller 20 from inside to outside, wherein the first filter screen cylinder 10 and the second filter screen cylinder 11 form a screen cylinder main body 12 for filtering, a second toothed guide ring 19 is arranged on the second roller 20 and is also driven by a driving device on the base 8, and the second roller 20 is rotatably supported on the base 8.

The driving device fixed on the base 8 comprises a roller 7 and a driving motor (not shown in the figure), a single tooth-type guide ring is provided with a driving device, the roller 7 of the driving device and the tooth-type guide ring are in meshing transmission, and the roller 7 is driven by the external driving motor to drive the tooth-type guide ring to enable a roller fixed with the tooth-type guide ring to rotate along the circumferential direction.

The drum mixer 1 and the net drum sand-soil separator 2 are respectively and independently rotated, as shown in fig. 2, a first tooth type guide ring 6 and a configuration driving device are respectively arranged on the front end and the rear end of the drum mixer 1 along the axial direction, a second drum 20 of the net drum sand-soil separator 2 mainly comprises a net drum main body 12, a front drum 13 extends from the front end of the net drum main body 12, a rear drum 14 extends from the rear end of the net drum main body 12, and a second tooth type guide ring 19 and a configuration driving device are arranged on the front drum 13.

Wherein, the drum mixer 1 and the screen cylinder sand-soil separator 2 are arranged on the same level, the screen cylinder sand-soil separator 2 takes a front cylinder 13 as an upper position, takes a rear cylinder 14 as a lower position, inclines downwards along the direction towards the rear cylinder 14 and is arranged in an inclined way with the drum mixer 1 at a certain angle, and the inclined angle of the screen cylinder sand-soil separator 2 is set within the range of 2-6 degrees.

In order to stably connect and transport the drum mixer 1 and the net drum sand-soil separator 2, a connecting cylinder 15 between the connection is fixed by a support frame 16 arranged on the base 8, and sealing rings are arranged at two ends of the connecting cylinder 15 connected with the drum mixer 1 and the net drum sand-soil separator 2.

When the device is used, the driving motor drives the drum mixer 1 and the net drum sand-soil separator 2 to rotate, building soil slag (mainly composed of sand) on a construction site and water are thrown into the feed hopper 4 together, the building soil slag is introduced into the drum mixer 1 through the guide cylinder 5, the sand mixed in the drum mixer 1 is in a slurry state to form mixed slurry, and the drum mixer 1 introduces the mixed slurry into the net drum sand-soil separator 2 through the connecting cylinder 15. The mixed slurry can easily flow into the screen cylinder sand-soil separator 2 due to the pressure applied by the feeding hopper 4 of the drum mixer 1 and the inclined arrangement of the screen cylinder sand-soil separator 2.

In the screen cylinder sand-soil separator 2, firstly, foreign matters such as broken stones, wood blocks, metals and the like are separated from the sand by the first filter screen cylinder 10, then, the sand is separated from the second filter screen cylinder 11, the separated foreign matters and sand reach the rear cylinder 14 of the screen cylinder sand-soil separator 2 through the inclination of the screen cylinder sand-soil separator 2, and the residual slurry is discharged to the outside of the second filter screen cylinder 11. A first sand discharge port 17 and a second sand discharge port 18 are arranged on the rear barrel 14, are positioned at the lower side of the rear barrel 14, are respectively communicated with the first filter screen barrel 10 and the second filter screen barrel 11, and are used for discharging separated foreign matters and sandy soil.

Wherein, in order to effectively separate the sand and soil components, the rotating speed of the net cylinder sand and soil separator 2 is set to be higher than that of the drum mixer 1. In this way, in the sandy soil treatment apparatus of the present embodiment, foreign matter and sandy soil components are separated from the construction waste and recovered.

As shown in fig. 3, in order to improve the stirring efficiency, a plurality of baffles 9 are circumferentially distributed on the inner peripheral wall of the first drum 3 of the drum mixer 1, each baffle 9 is inclined at a certain angle along the rotation direction of the drum mixer 1, and when the drum mixer 1 is rotated and stirred, silt is driven by the baffles 9 on the first drum 3 to rotate together with water in the arrow direction of fig. 3, so that the soil blocks are easily crushed.

As shown in fig. 4, the screen cylinder sand-soil separator 2 is used for filtration and separation, wherein the mesh size of the first filter screen cylinder 10 is set to be larger than that of the second filter screen cylinder 11, optionally, the mesh size of the first filter screen cylinder 10 is set to be 40mm to 50mm, and is used for mud screening of sand with the grain size of 75 μm to 2mm, the mesh size of the second filter screen cylinder 11 is set to be 1mm to 3mm, and is used for mud separation of silt with the grain size of 10 μm to 75 μm and clay with the grain size of 10 μm or less, preferably, the mesh size of the first filter screen cylinder 10 is set to be 45mm, and the mesh size of the second filter screen cylinder 11 is set to be 2mm.

In this way, sand with a particle size of 75 μm to 2mm can be screened out from the slurry by the centrifugal action of the screen cylinder sand-soil separator 2, and the residual slurry discharged from the first filter screen cylinder 10 is separated by the second filter screen cylinder 11 to contain silt with a particle size of 10 μm to 75 μm and clay with a particle size of 10 μm or less.

After the centrifugal separation, a slurry containing only clay having a particle size of 10 μm or less can be obtained, and if necessary, the slurry can be dehydrated by using a filter device such as a filter press, and if necessary, the slurry can be further dried by heating. The organic matter contained in the slurry is dissolved in the filtrate at the time of filtration, and the filtrate is discharged to remove the organic matter.

In this way, sand grains with the grain size of 75-2 mm, silt with the grain size of 10-75 μm and clay with the grain size of less than 10 μm can be extracted from the construction residue soil and can be used for preparing the fluid soil filler.

The manufacturing method comprises the following steps:

1) Building residue soil and water are put into a drum mixer 1 and mixed into slurry;

2) Putting the mixed slurry into a screen cylinder sand-soil separator 2, and screening out sand grains with the grain diameter of 75 mu m-2 mm through a first filter screen cylinder 10;

3) Separating silt with the particle size of 10-75 microns and clay with the particle size of less than 10 microns from the residual slurry through a second filter screen cylinder 11;

4) Mixing the obtained sand grains, the powder sand and the clay according to a certain proportion, and adding a water-hardening material and water to prepare a fluid soil filler;

wherein the hydraulic material is gypsum and blast furnace waste slag cement or reduction-period slag which are mixed according to a certain proportion, and the mixing proportion of the gypsum and the blast furnace waste slag cement or the reduction-period slag is 5:5 to 7:3, when blast furnace slag cement or reduction-stage slag and gypsum are used as hydraulic materials, the early strength and long-term strength of the fluidized filler after setting are improved.

Wherein the slag in the reduction stage can make the fluidized filler have enough strength after solidification and prevent the generation of cracks. The slag in the reduction stage preferably contains CaOSiO2, caSiO3, caF2 and CaOAl2O3 components, and may contain a glass component, other oxides, fluorides, and the like.

The content of solid formed by sand, powder sand and clay according to a certain proportion in the prepared fluid soil filler is controlled to be 40-70% of the total amount, and the rest is hydraulic material and water. Wherein the sand content in the solid content is 0-70%, and the sum of the sand content and the clay content is 20-100%. According to the quality requirement of the fluidized filler, the mass ratio of 100:0 to 0: the ratio of the silt and the clay is adjusted within the range of 100 mass ratio.

Among the above hydraulic materials, cements such as portland cement, slag cement, pozzolana cement, fly ash cement, aluminate cement, etc. can be used instead of the above cements such as silica powder, mica, diatomaceous earth, dolomite, gypsum, fly ash, blast furnace slag, coal ash, glass powder, siliceous clay, alumina, bentonite, calcium carbonate, magnesium carbonate, etc.

The hydraulic material is usually added to 1m in an amount of 50 to 500kg ³ And the above sand, silt and clay mixture is added to 1m in an amount of 400 to 1200kg in a dry state ³ In the normal slurry of (1).

In addition to the above components, additives may be added to the filler for the flowing soil according to actual requirements. In order to improve the fluidity of the fluidized filler, a fluidizing agent (water reducing agent) such as a surfactant, a lignosulfonate water reducing agent and the like can be added into the filler; in order to accelerate the hardening of the fluidized filler, cement hardening accelerators such as calcium chloride, magnesium hydroxide, aluminum sulfate, sodium aluminate, water glass and the like can be added; inorganic thickening agents such as bentonite, colloidal silicon dioxide and the like can be added in order to ensure that the fluidized filler has good water retention and thickening properties, less bleeding, difficult segregation and good plasticity; and organic thickeners such as polyacrylates, polyacrylamides, methyl cellulose, ethyl cellulose, and the like; to retard the setting time of the fluidized filler, organic acids such as citric acid, malic acid, gluconic acid, oxalic acid, and the like may be added.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (7)

1. The utility model provides a net section of thick bamboo formula sand processing apparatus which characterized in that: the screen cylinder sand-soil separator comprises a roller stirrer, a screen cylinder sand-soil separator and a base which are communicated with each other, wherein the base is provided with a driving device for driving the roller stirrer and the screen cylinder sand-soil separator to rotate along the circumferential direction;

a plurality of baffles are distributed on the inner peripheral wall of the drum mixer along the circumferential direction, and the baffles are obliquely arranged along the rotating direction of the drum mixer at a certain angle;

one end of the drum mixer, which is far away from the screen drum sand-soil separator, is provided with a feed hopper for throwing in building residue soil and water, and the drum mixer is used for mixing the building residue soil and the water to form slurry;

a first filter screen cylinder and a second filter screen cylinder are sequentially arranged on the outer peripheral wall of the screen cylinder sand-soil separator from inside to outside, and the filter screen cylinders are used for filtering slurry; the meshes of the first filtering net drum are larger than those of the second filtering net drum;

and one end of the screen cylinder sand-soil separator, which is far away from the drum mixer, is positioned at the lower side and is provided with a first sand discharge port and a second sand discharge port which are respectively communicated with the first filter screen cylinder and the second filter screen cylinder.

2. The net drum type sandy soil treatment device according to claim 1, characterized in that: at least one tooth-type guide ring is arranged on each of the drum mixer and the net drum sand-soil separator; each tooth-like guide ring is provided with a driving device.

3. The net drum type sandy soil processing device according to claim 2, characterized in that: the driving device comprises a roller and a driving motor which are arranged on the base, and the roller and the tooth-type guide ring are in meshing transmission;

the driving motor is used for driving the roller to rotate so that the meshed tooth-type guide ring drives the roller stirrer or the net drum sand-soil separator to rotate along the circumferential direction.

4. The net drum type sandy soil treatment device according to claim 1, characterized in that: the screen cylinder sand-soil separator is obliquely arranged at a certain angle with the drum mixer along the horizontal plane;

and a connecting cylinder is arranged between the net cylinder sand-soil separator and the drum mixer.

5. The net drum type sandy soil processing device according to claim 4, wherein: the base is provided with a support frame for fixing the connecting cylinder; and sealing rings are arranged at the connecting ends of the connecting cylinder, the roller mixer and the net cylinder sand-soil separator.

6. The net drum type sandy soil treatment device according to claim 4, characterized in that: the inclination angle of the sand-soil separator of the net cylinder is 2-6 degrees.

7. The net drum type sandy soil treatment device according to claim 1, characterized in that: the mesh size of the first filter screen cylinder is set to be 40-50 mm, and the first filter screen cylinder is used for screening sand grains with the grain size of 75-2 mm from slurry;

the mesh size of the second filter screen cylinder is set to be 1 mm-3 mm, and the second filter screen cylinder is used for separating silt with the particle size of 10 mu m-75 mu m and clay with the particle size of less than 10 mu m from slurry.

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