CN114653744B

CN114653744B - Contaminated soil solidification stabilization system

Info

Publication number: CN114653744B
Application number: CN202210258406.4A
Authority: CN
Inventors: 孔德川; 杜浩; 张莉; 诸葛鹏; 刘珮
Original assignee: Beijing Beikong Ecological Construction Group Co ltd
Current assignee: Beijing Beikong Ecological Construction Group Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2023-06-06
Anticipated expiration: 2042-03-16
Also published as: CN114653744A

Abstract

The application relates to a contaminated soil solidification stabilization system, comprising a soil screening device for separating crushed stone in soil and soil, a crushed stone cleaning device for cleaning crushed stone, and a medicament mixing device for mixing soil and medicament; the medicament mixing equipment comprises a barrel, wherein a feed hopper is arranged at the top of the barrel, a discharge pipe is arranged at the bottom of the barrel, two partition plates which are matched with each other for use are hinged in the barrel, the barrel is divided into a scattering chamber at the upper part and a mixing chamber at the lower part by the two partition plates, a scattering mechanism for scattering soil is arranged in the scattering chamber, and a spraying mechanism for adding medicaments and a stirring mechanism for stirring soil are arranged in the mixing chamber; and a driving piece for driving the partition plate to rotate around the hinge shaft is arranged in the cylinder body. The application has the advantages of evenly mixing soil and the medicament and improving the soil treatment effect.

Description

Contaminated soil solidification stabilization system

Technical Field

The present application relates to the field of contaminated soil solidification, and in particular to a contaminated soil solidification stabilization system.

Background

At present, with the growth of population and the development of economy, the discharge of corresponding solid waste and industrial sewage is also increasing, and with the accumulation of solid waste on the soil surface and the immersion of industrial sewage into soil, the soil is gradually polluted, and then grains, vegetables, fruits and the like are polluted. In order to treat contaminated soil, a solidification and stabilization technology is commonly adopted at present, and the general flow is as follows: digging out soil, screening out large-particle stones, mixing the soil with a curing agent, conveying the mixed soil to a storage yard for curing, and recycling the soil after curing is finished, so that the soil can be used for backfilling, roadbed materials, building materials and the like.

The current pollution curing stabilization technology is more and more mature, more and more polluted soil can be recycled, but in the actual treatment process, especially when the soil and the curing agent are mixed, the possibility that the treatment effect is affected due to uneven mixing sometimes occurs, and how to further improve the problem is the problem to be solved at present.

Disclosure of Invention

In order to improve the mixing uniformity of soil and a medicament, the present application provides a contaminated soil stabilization system.

The contaminated soil solidification and stabilization system provided by the application adopts the following technical scheme:

the polluted soil solidification and stabilization system and method comprises a soil screening device, a broken stone cleaning device and a medicament mixing device, wherein the soil screening device is used for separating broken stone in soil and soil, the broken stone cleaning mechanism is used for cleaning broken stone, and the medicament mixing device is used for mixing soil and medicament;

the medicament mixing equipment comprises a barrel, wherein a feed hopper is arranged at the top of the barrel, a discharge pipe is arranged at the bottom of the barrel, two partition plates which are matched with each other for use are hinged in the barrel, the barrel is divided into a scattering chamber at the upper part and a mixing chamber at the lower part by the two partition plates, a scattering mechanism for scattering soil is arranged in the scattering chamber, and a spraying mechanism for adding medicaments and a stirring mechanism for stirring soil are arranged in the mixing chamber;

and a driving piece for driving the partition plate to rotate around the hinge shaft is arranged in the cylinder body.

Through adopting above-mentioned technical scheme, after soil gets into the barrel through the feeder hopper, break up the mechanism and break up soil earlier to there is the possibility of caking in the reduction soil, utilize driving piece drive division board to rotate, in order to make soil fall to the mixing chamber from breaking up the room, at the in-process that soil falls, spray mechanism blowout medicament, make the medicament adhere to on the soil that falls, stir the soil that falls to the mixing chamber simultaneously with the help of rabbling mechanism, make soil and medicament intensive mixing, thereby improve the mixing uniformity of soil and medicament.

In a specific implementation mode, the inside wall of the barrel is provided with a mounting rod positioned below the partition plate, the mounting rod is provided with a supporting rod, the end part of the supporting rod is provided with an umbrella-shaped distributing plate, the spraying mechanism comprises a plurality of dosing pipes arranged on the inside wall of the barrel, the dosing pipes are uniformly distributed around the distributing plate, and the dosing pipes are provided with a plurality of spray heads.

Through adopting above-mentioned technical scheme, when soil falls from the room of scattering, fall to the flitch earlier on, through the reposition of redundant personnel of flitch, the soil can be from the even whereabouts in periphery of flitch to form soil at the in-process that falls with the flitch as the center and drench the membrane, and then help the shower nozzle to evenly spray the medicament on soil, make mixing soil and the medicament that rabbling mechanism can be better.

In a specific implementation mode, a receiving hopper positioned between the separation plate and the material separating plate is arranged in the cylinder body, and the bottom of the receiving hopper is communicated with a collecting pipe.

Through adopting above-mentioned technical scheme, when the division board is opened, the volume of soil whereabouts is great, and soil gathers at the collecting vessel through receiving hopper earlier, and on the feed divider was gone into to the rethread collecting vessel for the periphery of feed divider is divided to the flow direction that soil can be even, thereby helps forming the soil and drenches the membrane.

In a specific embodiment, the driving member is a driving cylinder hinged with the inner side wall of the cylinder, and the output rod of the driving cylinder is hinged with the partition plate.

By adopting the technical scheme, the two partition plates can be opened, so that soil can fall into the mixing chamber.

In a specific implementation mode, the installation plate is arranged on the inner side wall of the cylinder, the scattering mechanism comprises a rotating rod arranged on the installation plate, a stirring rod is arranged on the rotating rod, and a scattering motor connected to the rotating rod is arranged on the installation plate.

By adopting the technical scheme, the soil is stirred so as to break up the soil.

In a specific implementation manner, the stirring mechanism comprises a stirring shaft arranged on the bottom plate of the cylinder body, stirring blades are arranged on the stirring shaft, a power motor is arranged at the bottom of the cylinder body, and the stirring shaft penetrates through the bottom of the cylinder body and is connected with an output shaft of the power motor.

Through adopting above-mentioned technical scheme, stir soil for soil and medicament mixed more even.

In a specific embodiment, rubble cleaning equipment is including the one-level washs case and the second grade washs case of intercommunication each other, the top of one-level washs the case is connected with the discharge pipe, be equipped with both ends and be open-ended wash bowl in the one-level washs the incasement, the bottom of wash bowl articulates there is the flitch, wash bowl and flitch all open a plurality of through-holes, the inside wall of one-level washs the case is equipped with a plurality of shower heads towards the wash bowl, the bottom slope of one-level washs the case be equipped with the play stone pipe with the second grade washs case intercommunication, play stone pipe intercommunication has the collector pipe, the mouth of pipe department of collector pipe and play stone pipe intercommunication is equipped with the filter screen.

By adopting the technical scheme, the crushed stone enters the secondary cleaning box for secondary cleaning through the stone outlet pipe after being cleaned by the primary cleaning box, so that the cleaning effect is effectively improved; the water after cleaning is discharged out of the primary cleaning box through the filter screen and the water collecting pipe, so that workers can collect the water mixed with pollutants for centralized treatment.

In a specific embodiment, the outer side wall of the cleaning cylinder is hinged with a power cylinder, and the output rod of the power cylinder is hinged with the discharging plate.

By adopting the technical scheme, the discharging plate is opened, so that broken stones fall into the discharging pipe.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the method, the scattering mechanism is used for scattering soil, the spraying mechanism is used for spraying the chemical agent to the fallen soil, and the stirring mechanism is combined for further mixing the soil and the chemical agent, so that the mixing uniformity of the soil and the chemical agent is effectively improved;

2. this application utilizes the feed divider to make soil form drenching the membrane at whereabouts in-process to help the shower nozzle evenly spray the medicament on soil, further improved the mixing uniformity of soil and medicament.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a contaminated soil stabilization system in an embodiment of the present application.

Fig. 2 is a cross-sectional view of a primary cleaning tank in an embodiment of the present application.

Fig. 3 is a cross-sectional view of a secondary purge bin in an embodiment of the present application.

Fig. 4 is a cross-sectional view of a cartridge in an embodiment of the present application.

Reference numerals illustrate: 1. a case; 11. a discharge pipe; 12. discharging pipes; 2. a first-stage cleaning box; 21. a cleaning cylinder; 211. a support plate; 212. a stirring motor; 213. a rotating shaft; 214. stirring strips; 215. a through hole; 22. a discharge plate; 23. a water inlet pipe; 231. a branch pipe; 232. a spray header; 233. a water supply pipe; 24. a power cylinder; 25. a stone outlet pipe; 26. a water collecting pipe; 261. a filter screen; 27. a water collection tank; 3. a secondary cleaning tank; 4. a cylinder; 41. a feed hopper; 42. a discharge pipe; 421. a valve; 43. a partition plate; 431. a driving cylinder; 44. a scattering chamber; 441. a mounting plate; 442. scattering the motor; 443. a rotating lever; 444. a stirring rod; 45. a mixing chamber; 46. a receiving hopper; 461. a collecting pipe; 47. a mounting rod; 471. a support rod; 472. a material dividing plate; 48. a liquid adding tube; 481. a dosing tube; 482. a spray head; 483. a liquid inlet pipe; 49. a stirring shaft; 491. stirring the leaves; 492. a power motor.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses a contaminated soil solidification and stabilization system. Referring to fig. 1, the contaminated soil solidification and stabilization system includes a soil screening apparatus and a crushed stone cleaning mechanism located at one side of the soil screening apparatus, the soil screening apparatus is a vibrating screen conventionally used in the art, the vibrating screen includes a box 1, one end of the box 1 is connected with a discharge pipe 11, the bottom of the box 1 is connected with a discharge pipe 12, after contaminated soil is put into the vibrating screen, crushed stone of large particles in the soil is discharged through the discharge pipe 42, and the soil after the crushed stone is removed is discharged through the discharge pipe 12, so that a worker removes the soil.

Referring to fig. 1 and 2, the crushed stone cleaning mechanism comprises a primary cleaning tank 2 and a secondary cleaning tank 3, wherein the top of the primary cleaning tank 2 is communicated with a discharge pipe 11, a hollow cleaning cylinder 21 is installed in the primary cleaning tank 2 through a supporting rod, two ends of the cleaning cylinder 21 are both openings, and the pipe orifice of the discharge pipe 11 corresponds to the top of the cleaning cylinder 21. A supporting plate 211 is mounted on the top of the cleaning cylinder 21, a rotating shaft 213 and a stirring motor 212 for driving the rotating shaft 213 to rotate are mounted on the supporting plate 211, and stirring bars 214 are arranged on the rotating shaft 213. The bottom of the cleaning cylinder 21 is hinged with a discharging plate 22 for blocking the cleaning cylinder 21 through a connecting shaft. Crushed stone screened by the vibrating screen can enter the cleaning cylinder 21 through the discharge pipe 11, and the stirring shaft 49 and the stirring bar 214 can stir the crushed stone.

The cleaning cylinder 21 and the discharging plate 22 are provided with a plurality of through holes 215, the inner side wall of the cleaning cylinder 21 is provided with an annular water inlet pipe 23, the water inlet pipe 23 is provided with a plurality of vertical branch pipes 231, the branch pipes 231 are provided with a plurality of spray heads 232 towards the cleaning cylinder 21, the water inlet pipe 23 is communicated with a water adding pipe 233, and the water adding pipe 233 extends out of the primary cleaning box 2 and can be connected with a water pump and a water source, so that the spray heads 232 can spray water towards the cleaning cylinder 21, and the purpose of cleaning crushed stones is achieved.

Referring to fig. 2 and 3, the outer sidewall of the cleaning cylinder 21 is hinged with a power cylinder 24 through a connection shaft, and an output rod of the power cylinder 24 is hinged with a discharge plate 22 through a connection shaft. The bottom of the primary cleaning box 2 is obliquely provided with a stone outlet pipe 25, and the stone outlet pipe 25 is communicated with the secondary cleaning box 3. The bottom of the primary cleaning tank 2 is also communicated with a water collecting pipe 26 communicated with the stone outlet pipe 25, a filter screen 261 is arranged at the pipe orifice of the water collecting pipe 26, and a water collecting tank 27 is arranged below the water collecting pipe 26. After the crushed stone is washed, the power cylinder 24 drives the discharge plate 22 to rotate so as to open the washing cylinder 21, so that the crushed stone can enter the secondary washing tank 3 through the stone outlet pipe 25 for secondary washing, and in the process of washing the crushed stone, water mixed with pollutants can fall into the water collecting tank 27 through the filter screen 261 and the water collecting pipe 26 so as to facilitate centralized treatment of the water by workers. The secondary cleaning box 3 is communicated with the primary cleaning box 2 through a stone outlet pipe 25, and the structure of the secondary cleaning box 3 is the same as that of the primary cleaning box 2, so that the crushed stone can be secondarily cleaned after entering the secondary cleaning box 3, and the cleaning effect is ensured.

Referring to fig. 1 and 4, one side of the soil screening apparatus is provided with a medicine mixing apparatus including a cylinder 4, the top of the cylinder 4 is provided with a feed hopper 41, the bottom is provided with a discharge pipe 42, and the discharge pipe 42 is provided with a valve 421. The two opposite inner side walls of the cylinder body 4 are both connected with a rotatable partition plate 43 through a connecting shaft, the inner side walls of the cylinder body 4 are hinged with a driving air cylinder 431 through the connecting shaft, and an output rod of the driving air cylinder 431 is hinged with the partition plate 43 through the connecting shaft.

When the two partition plates 43 are positioned in a horizontal state, the partition plates 43 divide the cylinder 4 into a scattering chamber 44 positioned at the upper part and a mixing chamber 45 positioned at the lower part, a mounting plate 441 positioned in the scattering chamber 44 is arranged on the inner side wall of the cylinder 4, a rotatable rotating rod 443 and a scattering motor 442 for driving the rotating rod 443 to rotate are arranged on the mounting plate 441, and a plurality of stirring rods 444 are arranged on the rotating rod 443. After the worker adds the crushed stone-screened soil into the cylinder 4 through the feed hopper 41, the soil enters the scattering chamber 44 and can be scattered by the stirring rod 444, so that the phenomenon of caking in the soil is reduced.

A receiving hopper 46 located in the mixing chamber 45 is installed in the cylinder 4 through a mounting plate 441, and a collecting pipe 461 is installed at the bottom of the receiving hopper 46. The inside wall level of barrel 4 is equipped with installation pole 47, and the tip of installation pole 47 is vertical to be equipped with bracing piece 471, and the tip of bracing piece 471 is equipped with and is umbrella-type branch flitch 472, divides flitch 472 to be located the collecting pipe 461 under and divide flitch 472 and collecting pipe 461 coaxial. After the driving cylinder 431 drives the partition plate 43 to rotate, soil in the scattering chamber 44 falls into the receiving hopper 46 firstly and then falls onto the distributing plate 472 through the collecting pipe 461, and the soil can uniformly flow to the periphery of the distributing plate 472 and fall due to the umbrella-shaped distributing plate 472, so that a soil coating film is formed around the distributing plate 472.

The inside wall of barrel 4 is equipped with annular liquid filling pipe 48, and the vertical a plurality of dosing pipes 481 that are equipped with on the liquid filling pipe 48, a plurality of dosing pipes 481 evenly arrange around dividing board 472, and a plurality of shower nozzles 482 have evenly been arranged on the dosing pipe 481, and liquid filling pipe 48 intercommunication has feed liquor pipe 483, and feed liquor pipe 483 stretches out barrel 4 and can connect in the dosing pump to send the medicament into in the barrel 4. When soil falls from the knock out plate 472, the spray head 482 may spray the chemical onto the falling soil so that the soil can be uniformly mixed with the chemical.

Four stirring shafts 49 are arranged on the bottom plate of the cylinder 4, a plurality of stirring blades 491 are arranged on the stirring shafts 49, a power motor 492 is arranged at the bottom of the cylinder 4, and the end parts of the stirring shafts 49 penetrate through the bottom plate of the cylinder 4 and are connected with an output shaft of the power motor 492. After the soil falls onto the bottom plate of the cylinder 4, the stirring shaft 49 and the stirring blades 491 stir the soil, so that the soil and the chemical are further mixed.

The implementation principle of the contaminated soil solidification and stabilization system and method in the embodiment of the application is as follows: firstly, the broken stone in the soil is screened out by utilizing the soil screening equipment, then the soil is put into the cylinder 4, the soil is scattered by using the scattering mechanism, the soil is enabled to form a soil coating film in the falling process by utilizing the distributing plate 472, the spray nozzle 482 can uniformly spray the medicament on the soil, and then the stirring shaft 49 and the stirring blade 491 are utilized to further stir the soil and the medicament, so that the soil and the medicament are fully mixed, the mixing uniformity of the soil and the medicament is effectively improved, and the treatment effect on the soil is ensured.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. Contaminated soil solidification stabilization system, its characterized in that: the device comprises a soil screening device, a broken stone cleaning device and a medicament mixing device, wherein the soil screening device is used for separating broken stone in soil and soil, the broken stone cleaning mechanism is used for cleaning broken stone, and the medicament mixing device is used for mixing the soil and the medicament;

the medicament mixing equipment comprises a barrel (4), a feed hopper (41) is arranged at the top of the barrel (4), a discharge pipe (42) is arranged at the bottom of the barrel (4), two partition plates (43) which are matched with each other for use are hinged in the barrel (4), the two partition plates (43) divide the barrel (4) into a scattering chamber (44) positioned at the upper part and a mixing chamber (45) positioned at the lower part, a scattering mechanism for scattering soil is arranged in the scattering chamber (44), and a spraying mechanism for adding medicaments and a stirring mechanism for stirring soil are arranged in the mixing chamber (45);

a driving piece for driving the partition plate (43) to rotate around the hinge shaft is arranged in the cylinder body (4);

the inner side wall of the cylinder body (4) is provided with a mounting rod (47) positioned below the partition plate (43), the mounting rod (47) is provided with a supporting rod (471), the end part of the supporting rod (471) is provided with an umbrella-shaped distributing plate (472), the spraying mechanism comprises a plurality of dosing pipes (481) arranged on the inner side wall of the cylinder body (4), the dosing pipes (481) are uniformly distributed around the distributing plate (472), and the dosing pipes (481) are provided with a plurality of spray heads (482);

a receiving hopper (46) positioned between the separation plate (43) and the material separating plate (472) is arranged in the cylinder (4), and the bottom of the receiving hopper (46) is communicated with a collecting pipe (461);

the driving piece is a driving air cylinder (431) hinged with the inner side wall of the cylinder body (4), and an output rod of the driving air cylinder (431) is hinged with the partition plate (43);

the stone crushing cleaning equipment comprises a first-stage cleaning box (2) and a second-stage cleaning box (3) which are mutually communicated, a discharge pipe (11) is connected to the top of the first-stage cleaning box (2), cleaning cylinders (21) with two ends being open are arranged in the first-stage cleaning box (2), discharging plates (22) are hinged to the bottoms of the cleaning cylinders (21), a plurality of through holes (215) are formed in the bottoms of the cleaning cylinders (21) and the discharging plates (22), a plurality of spray heads (232) facing the cleaning cylinders (21) are arranged on the inner side walls of the first-stage cleaning box (2), a stone outlet pipe (25) communicated with the second-stage cleaning box (3) is obliquely arranged at the bottom of the first-stage cleaning box (2), a water collecting pipe (26) is communicated with the stone outlet pipe, and a filter screen (261) is arranged at the pipe opening of the water collecting pipe (26) communicated with the stone outlet pipe (25).

2. The contaminated soil stabilization system according to claim 1, wherein: the stirring device is characterized in that a mounting plate (441) is arranged on the inner side wall of the cylinder body (4), the scattering mechanism comprises a rotating rod (443) arranged on the mounting plate (441), a stirring rod (444) is arranged on the rotating rod (443), and a scattering motor (442) connected to the rotating rod (443) is arranged on the mounting plate (441).

3. The contaminated soil stabilization system according to claim 1, wherein: the stirring mechanism comprises a stirring shaft (49) arranged on the bottom plate of the cylinder body (4), stirring blades (491) are arranged on the stirring shaft (49), a power motor (492) is arranged at the bottom of the cylinder body (4), and the stirring shaft (49) penetrates through the bottom of the cylinder body (4) and is connected with an output shaft of the power motor (492).

4. The contaminated soil stabilization system according to claim 1, wherein: the outer side wall of the cleaning cylinder (21) is hinged with a power cylinder (24), and an output rod of the power cylinder (24) is hinged with a discharging plate (22).