CN214211734U - Accurate injection system for in-situ remediation of contaminated site - Google Patents
Accurate injection system for in-situ remediation of contaminated site Download PDFInfo
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- CN214211734U CN214211734U CN202023311245.6U CN202023311245U CN214211734U CN 214211734 U CN214211734 U CN 214211734U CN 202023311245 U CN202023311245 U CN 202023311245U CN 214211734 U CN214211734 U CN 214211734U
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- injection
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Abstract
The utility model relates to a be used for polluting prosthetic accurate injection system of place normal position, including the medicament agitator, grouting pump and many slip casting outer tubes and slip casting inner tube, many slip casting outer tubes are the interval and fix and arrange the underground in and extend to underground soil pollution area, and top-down circumference has seted up a plurality of filling holes on the pipe wall of slip casting outer tube, the slip casting inner tube sets up in the slip casting outer tube, a plurality of slip casting sieve meshes have been seted up on the lower part pipe wall of slip casting inner tube, grouting pump intercommunication medicament agitator and each slip casting inner tube, the slip casting outer tube can be followed to the slip casting inner tube and reciprocated for carry out directional injection to the stratum of different pollution depth. The utility model discloses can pour into the medicament thick liquid into and pollute the soil stratum in, realize accurate injection, be fit for handling various soil layers such as silt, sand, clay, the selection of injection point position has bigger flexibility, compares the high pressure and spouts the injection soon, and the medicament saves 20% -30%, ensures simultaneously that each corner homoenergetic that pollutes soil obtains effectual restoration.
Description
Technical Field
The utility model relates to a soil environment restoration technical field, concretely relates to be used for polluting prosthetic accurate injection system of place normal position.
Background
The in-situ remediation of the polluted soil and underground water means that the remediation agent is effectively conveyed to the underground environment, is fully contacted and mixed with pollutants in the polluted soil or underground water, and then oxidizes and decomposes the pollutants. Currently, in engineering implementation, the injection method of the in-situ chemical oxidation agent mainly includes high-pressure jet grouting injection, well construction injection, Geoprobe injection, and the like.
The well construction injection is mainly suitable for medium and high permeability stratum, the repairing effect is greatly influenced by the site, and meanwhile, a large amount of well construction and a large amount of devices such as diaphragm pumps, dissolving and dispensing agents and the like are required. The main equipment of Geoprobe direct-pushing injection is a Geoprobe drilling machine, the injection efficiency is low, the applicability is limited by the stratum and the injection depth, and the influence radius is small. The above two implantation methods are relatively less applied.
The high-pressure rotary spraying injection is widely applied, the injection pipe with the nozzle is lifted upwards by the high-pressure rotary spraying equipment while being sprayed, the soil body is cut and stirred by high-pressure liquid flow and air flow, and the medicament is fully mixed with the soil to oxidize and decompose pollutants. The injection pressure of the high-pressure rotary jet injection is large (20-30Mpa), and the operation safety needs to be enhanced; the injection precision is poor, certain areas are difficult to inject in place, and multiple times of injection are needed; the phenomenon of slurry return during injection is more, the effective utilization rate of the medicament is low, and the medicament is seriously wasted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve exist not enough among the above-mentioned background art, provide a be used for polluting prosthetic accurate injection system of place normal position, can pour into the medicament thick liquid into through this system and pollute the soil stratum, realize accurate the injection, be fit for handling multiple soil layers such as silt, sand, clay.
In order to solve the technical problem, the utility model adopts the following technical scheme:
an accurate injection system for in-situ remediation of a contaminated site comprises a medicament stirring barrel, a grouting pump, a plurality of grouting outer pipes and a grouting inner pipe, wherein the plurality of grouting outer pipes are fixedly arranged underground at intervals and extend to an underground soil pollution area, a plurality of injection holes communicated with soil of each layer are circumferentially formed in the pipe wall of each grouting outer pipe from top to bottom, the grouting inner pipe is arranged in the grouting outer pipe, a plurality of grouting sieve holes are formed in the pipe wall of the lower part of the grouting inner pipe, the input end of the grouting pump is communicated with the medicament stirring barrel, and the output end of the grouting pump is communicated with each grouting inner pipe through a medicament conveying hose and is used for pressing and injecting a medicament in the medicament stirring barrel into a stratum; the grouting inner pipe can move up and down along the grouting outer pipe and is used for directionally injecting the chemicals into the stratums with different pollution depths.
The upper ends of the grouting outer pipe and the grouting inner pipe are located above the ground, the lower end of the grouting outer pipe is provided with a conical plug, the grouting outer pipe extends into soil to be repaired to be at least 500mm below the depth, and the lower end of the grouting inner pipe is closed.
The slip casting inner tube outside is equipped with two sets of at least rubber seal, and wherein the top is a set of rubber seal will the slip casting inner tube divide into two parts from top to bottom, is located the lower part a plurality of slip casting sieve meshes have been seted up on the pipe wall of slip casting inner tube, a set of the below rubber seal is located follow on the slip casting inner tube bottom, rubber seal's external diameter with the internal diameter phase-match of slip casting outer tube, the internal diameter with the external diameter phase-match of slip casting inner tube.
Preferably, the grouting sieve holes are distributed on the side wall of the grouting inner pipe in a triangular shape.
And a rubber sleeve is arranged on the outer side of each injection hole, during grouting, the rubber sleeve outside the injection hole is flushed by the pressure of slurry in the outer grouting pipe, the slurry enters soil, and when the pressure outside the outer grouting pipe is greater than that in the pipe, the rubber sleeve outside the injection hole is automatically closed.
And a stirrer for preparing the medicament and a liquid level meter for controlling the injection amount are arranged in the medicament stirring barrel.
The medicament agitator is including establishing ties two that set up, first the export and the second of medicament agitator the import intercommunication of medicament agitator, and two all be equipped with grouting pump, manometer and check valve on the outlet pipeline of medicament agitator, the grouting pump is close to the setting of medicament agitator export, the manometer sets up the grouting pump with between the check valve.
Preferably, the grouting pump is a chemical pump, the grouting inner tube is a stainless steel tube, and the drug delivery hose is a high-pressure rubber hose.
And a traction device is also arranged above the grouting inner pipe, and the traction device is fixedly connected with the upper end of the grouting inner pipe and used for lifting the grouting inner pipe to a specific height.
The utility model discloses technical scheme has following advantage:
A. the utility model is used for pollute prosthetic accurate injection system of place normal position, can pour into the medicament thick liquid into and pollute the soil stratum in, realize accurate injection, be fit for handling various soil layers such as silt, sandy soil, clay, the selection of injection site has bigger flexibility, can be according to the different positions of pollutant, the different degree of depth realizes continuous or hop section injection, also can carry out repeated injection to same injection section, compare the high pressure and spout the injection soon, the medicament saves 20% -30%, each corner homoenergetic that ensures to pollute soil simultaneously can obtain effectual restoration.
B. The utility model discloses the upper and lower two way seal device on clearing hole inner seal medicament solution, one-way rubber sleeve, the slip casting inner tube has reduced the mutual interference between the different injection sections, has reduced the possibility of bleeding when pouring into, cluster thick liquid, and is less to peripheral soil environment influence, is difficult for causing secondary pollution.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained from the drawings without inventive work.
Fig. 1 is a schematic diagram of the overall structure of the accurate injection system for in-situ remediation of a contaminated site according to the present invention;
fig. 2 is an enlarged view of the structure a in fig. 1.
Description of reference numerals:
1-grouting an inner pipe, 11-grouting sieve holes; 2-grouting an outer pipe, 21-injecting a hole, and 22-tapered plugs; 3-rubber sleeve; 4-rubber sealing ring; 5-a medicament stirring barrel, 51-a stirrer and 52-a liquid level meter; 6-grouting pump; 7-a pressure gauge; 8-a one-way valve; 9-drug delivery hose; 10-a traction device; 20-a stop valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides an accurate injection system for contaminated site normal position is restoreed, including medicament agitator 5, grouting pump 6 and many slip casting outer tubes 2 and slip casting inner tube 1, many slip casting outer tubes 2 are fixed to be arranged in the underground and extend to underground soil pollution area in the interval, and top-down circumference has seted up a plurality of filling holes 21 that are linked together with each layer soil on the pipe wall of slip casting outer tube 2, slip casting inner tube 1 sets up in slip casting outer tube 2, has seted up a plurality of slip casting sieve meshes 11 on the lower part pipe wall of slip casting inner tube 1, the input of grouting pump 6 communicates with medicament agitator 5, its output communicates with each slip casting inner tube 1 through a medicine conveying hose 9 for in pressing the medicament in the medicament agitator 5 into the stratum; the grouting inner pipe 1 can move up and down along the grouting outer pipe 2 and is used for directionally injecting the chemicals into the stratums with different pollution depths. The utility model discloses can pour into the medicament thick liquid into and pollute the soil stratum in, realize accurate injection, be fit for handling various soil layers such as silt, sand, clay, the selection of injection point position has bigger flexibility, can realize according to the different positions of pollutant, the different degree of depth is continuous or the hop is poured into, also can carry out repeated injection to same injection section, compare the high pressure and spout the injection soon, the medicament saves 20% -30%, ensures simultaneously that each corner homoenergetic that pollutes soil obtains effectual restoration.
Furthermore, the upper ends of the grouting outer pipe 2 and the grouting inner pipe 1 are positioned above the ground, the lower end of the grouting outer pipe 2 is provided with a conical plug 22, the grouting outer pipe 2 extends into soil to be repaired to a depth of at least 500mm below, and the effect of reducing sediments in the hole is achieved; the lower end of the grouting inner pipe 1 is closed. The outer side of the grouting inner pipe 1 is provided with at least two groups of rubber sealing rings 4, wherein the uppermost group of rubber sealing rings 4 divides the grouting inner pipe 1 into an upper part and a lower part, the pipe wall of the grouting inner pipe 1 positioned at the lower part is provided with a plurality of grouting sieve pores 11, the lowermost group of rubber sealing rings 4 is positioned at the bottom upper edge of the grouting inner pipe 1, the outer diameter of each rubber sealing ring 4 is matched with the inner diameter of the grouting outer pipe 2, and the inner diameter is matched with the outer diameter of the grouting inner pipe 1.
The grouting screen holes 11 are arranged in a triangular shape, preferably a regular triangular shape, on the side wall of the grouting inner pipe 1.
In addition, each filling hole 21 is provided with a rubber sleeve 3 on the outer side, when the grouting is performed, the pressure of the grout in the outer grouting pipe 2 pushes the rubber sleeve 3 outside the filling hole 21 open, the grout enters the soil, and when the pressure of the outer grouting pipe 2 is larger than that of the pipe, the rubber sleeve 3 outside the filling hole 21 is automatically closed.
During construction, firstly, drilling hole positions are arranged according to the control point coordinates, and the hole diameter of the formed hole is about 110 mm through a drilling machine. The aperture of the inner grouting pipe 1 is 20mm, and the top of the inner grouting pipe is connected by threads and can be elongated and moved. The grouting inner pipe 1 is separated by at least two groups of rubber sealing rings 4, wherein the material of the part above the uppermost group of rubber sealing rings 4 is a stainless steel solid pipe, the length of the stainless steel solid pipe is about 30cm, the material of the part below the uppermost group of rubber sealing rings 4 is a stainless steel sieve pipe, namely, a plurality of grouting sieve holes 11 are arranged on the pipe wall of the grouting inner pipe 1, the grouting sieve holes 11 are arranged on the pipe wall of the grouting inner pipe 1 in a triangular mode, preferably in a regular triangular mode, the length of the stainless steel sieve pipe is 2m, and preferably, the distance between every two adjacent groups of rubber sealing rings 4 is 500m m. The aperture of the grouting outer pipe 2 is 50-80mm, the distance between the rubber sleeves 3 arranged on the grouting outer pipe 2 is 0.3 m, one end of each rubber sleeve 3 is fixedly connected with the pipe wall of the grouting outer pipe 2 outside the injection hole 21 to cover the injection hole 21, during grouting, the rubber sleeves 3 outside the injection holes 21 are flushed by the pressure of slurry in the grouting outer pipe 2, the slurry enters soil, and when the pressure outside the grouting outer pipe 2 is greater than that in the pipe, the rubber sleeves 3 outside the injection holes 21 are automatically closed to ensure unidirectional movement of the slurry.
A stirrer 51 for preparing the medicine and a level meter 52 for controlling the amount of the injected medicine are provided in the medicine stirring barrel 5. The medicament agitator 5 is including establishing ties two that set up, the export of first medicament agitator 5 and the import intercommunication of second medicament agitator 5, and all be equipped with grouting pump 6, manometer 7 and check valve 8 on the outlet pipeline of two medicament agitators 5, and grouting pump 6 is close to 5 exports of medicament agitator and sets up, and manometer 7 sets up at grouting pump 6 with between the check valve 8.
The utility model discloses the preferred chemical pump that is of grouting pump 6, grouting inner tube 1 is nonrust steel pipe, and defeated medicine hose 9 is high-pressure rubber hose.
A traction device 10 is further arranged above the grouting inner pipe 1, and the traction device 10 is fixedly connected with the upper end of the grouting inner pipe 1 and used for lifting the grouting inner pipe 1 to a specific height.
When the device is used, a preset water amount is injected into the agent stirring barrel 5, the stirrer 51 is started, then the single-group or double-group agent A/B is added to the designed amount, the mixture is stirred for 3min to 5min and enters the injection device through the drug delivery hose under the pressure of the injection pump 6, and the agent is injected into the soil needing to be repaired.
During injection, sectional injection is adopted, the injection pressure is maintained at about 0.6Mpa, and the injection flow is less than 30L/min. The injection length of each section is one injection step, and the injection step range is 50-100 cm. In the injection process, after each section of injection is finished, the grouting inner pipe 1 is accurately moved upwards or downwards by one step distance by the traction device 10. After the injection is finished, a cover is covered on the upper cover of the injection pipe, so that the re-injection construction is facilitated.
The utility model discloses the upper and lower two way seal device on clearing hole inner seal medicament solution, rubber sleeve 3, slip casting inner tube 1 has reduced the mutual interference between the different injection sections, has reduced the possibility of bleeding when pouring into, cluster thick liquid, and is less to peripheral soil environment influence, is difficult for causing secondary pollution.
The utility model discloses the nothing is mentioned the part and is applicable to prior art. It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. The accurate injection system for in-situ remediation of the contaminated site is characterized by comprising a medicament stirring barrel (5), a grouting pump (6), a plurality of grouting outer pipes (2) and a grouting inner pipe (1), wherein the grouting outer pipes (2) are fixedly arranged underground at intervals and extend to an underground soil contaminated area, and a plurality of injection holes (21) communicated with soil of each layer are circumferentially arranged on the pipe wall of the grouting outer pipe (2) from top to bottom, the grouting inner pipe (1) is arranged in the grouting outer pipe (2), the pipe wall of the lower part of the grouting inner pipe (1) is provided with a plurality of grouting sieve holes (11), the input end of the grouting pump (6) is communicated with the medicament stirring barrel (5), the output end of the grouting inner tube is communicated with each grouting inner tube (1) through a drug delivery hose (9) and is used for injecting the drug in the drug stirring barrel (5) into the stratum; the grouting inner pipe (1) can move up and down along the grouting outer pipe (2) and is used for directionally injecting the chemicals into the stratums with different pollution depths.
2. The accurate injection system for in-situ remediation of a contaminated site according to claim 1, wherein the upper ends of the outer grouting pipe (2) and the inner grouting pipe (1) are located above the ground, the lower end of the outer grouting pipe (2) is provided with a conical plug (22), the outer grouting pipe (2) extends into soil to be remediated to a depth of at least 500mm below, and the lower end of the inner grouting pipe (1) is closed.
3. The accurate injection system for in-situ remediation of a contaminated site as claimed in claim 1, wherein at least two sets of rubber sealing rings (4) are arranged on the outer side of the grouting inner pipe (1), wherein the rubber sealing ring (4) on the uppermost side divides the grouting inner pipe (1) into an upper part and a lower part, a plurality of grouting sieve holes (11) are formed in the pipe wall of the grouting inner pipe (1) on the lower part, the rubber sealing ring (4) on the lowermost side is located on the upper edge of the bottom of the grouting inner pipe (1), the outer diameter of the rubber sealing ring (4) is matched with the inner diameter of the grouting outer pipe (2), and the inner diameter is matched with the outer diameter of the grouting inner pipe (1).
4. The precision injection system for in-situ remediation of contaminated sites according to claim 3, wherein the grouting holes (11) are arranged in a triangular pattern on the side walls of the grouting inner pipe (1).
5. The accurate injection system for in-situ remediation of a contaminated site as claimed in claim 1, wherein a rubber sleeve (3) is arranged on the outer side of each injection hole (21), during injection, the rubber sleeve (3) outside the injection hole (21) is flushed away by slurry pressure in the outer grouting pipe (2), slurry enters soil, and when the pressure outside the outer grouting pipe (2) is greater than that in the pipe, the rubber sleeve (3) outside the injection hole (21) is automatically closed.
6. The precise injection system for in-situ remediation of a contaminated site according to claim 1, wherein a stirrer (51) for preparing the medicament and a liquid level meter (52) for controlling the amount of the injected medicament are arranged in the medicament stirring barrel (5).
7. The accurate injection system for in-situ remediation of a contaminated site as claimed in claim 1, wherein the reagent mixing tank (5) comprises two tanks arranged in series, the first tank (5) is communicated with the second tank (5) through the inlet, and a grouting pump (6), a pressure gauge (7) and a one-way valve (8) are arranged on the outlet pipeline of the two tanks (5), the grouting pump (6) is close to the outlet of the reagent mixing tank (5), and the pressure gauge (7) is arranged between the grouting pump (6) and the one-way valve (8).
8. The accurate injection system for in-situ remediation of a contaminated site as claimed in claim 1, wherein the grouting pump (6) is a chemical pump, the grouting inner tube (1) is a stainless steel tube, and the drug delivery hose (9) is a high pressure rubber hose.
9. The accurate injection system for in-situ remediation of a contaminated site according to any one of claims 1 to 8, wherein a traction device (10) is further arranged above the grouting inner pipe (1), and the traction device (10) is fixedly connected with the upper end of the grouting inner pipe (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023311245.6U CN214211734U (en) | 2020-12-30 | 2020-12-30 | Accurate injection system for in-situ remediation of contaminated site |
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| CN202023311245.6U CN214211734U (en) | 2020-12-30 | 2020-12-30 | Accurate injection system for in-situ remediation of contaminated site |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857234A (en) * | 2021-11-16 | 2021-12-31 | 北京高能时代环境技术股份有限公司 | Repairing agent injection device and injection method |
| CN115026123A (en) * | 2022-06-20 | 2022-09-09 | 中交第三航务工程局有限公司 | In-situ chemical oxidation combined remediation method for land pollution |
| CN115026124A (en) * | 2022-06-22 | 2022-09-09 | 上海城建市政工程（集团）有限公司 | Multi-depth in-situ infiltration injection method for soil and underground water remediation |
| CN115532810A (en) * | 2022-09-28 | 2022-12-30 | 上海勘察设计研究院(集团)有限公司 | Intelligent soil remediation project medicament injection device that can dynamically adjust |
| CN116037636A (en) * | 2022-12-13 | 2023-05-02 | 煜环环境科技有限公司 | Double-layer pipe double-ring plug injector and soil in-situ restoration method |
| CN116237352A (en) * | 2021-12-08 | 2023-06-09 | 中国石油天然气集团有限公司 | Method for repairing polluted site by adopting horizontal sectional pressure injection |
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2020
- 2020-12-30 CN CN202023311245.6U patent/CN214211734U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857234A (en) * | 2021-11-16 | 2021-12-31 | 北京高能时代环境技术股份有限公司 | Repairing agent injection device and injection method |
| CN116237352A (en) * | 2021-12-08 | 2023-06-09 | 中国石油天然气集团有限公司 | Method for repairing polluted site by adopting horizontal sectional pressure injection |
| CN115026123A (en) * | 2022-06-20 | 2022-09-09 | 中交第三航务工程局有限公司 | In-situ chemical oxidation combined remediation method for land pollution |
| CN115026124A (en) * | 2022-06-22 | 2022-09-09 | 上海城建市政工程（集团）有限公司 | Multi-depth in-situ infiltration injection method for soil and underground water remediation |
| CN115026124B (en) * | 2022-06-22 | 2023-10-20 | 上海城建市政工程（集团）有限公司 | Multi-depth in-situ infiltration injection method for soil and groundwater remediation |
| CN115532810A (en) * | 2022-09-28 | 2022-12-30 | 上海勘察设计研究院(集团)有限公司 | Intelligent soil remediation project medicament injection device that can dynamically adjust |
| CN115532810B (en) * | 2022-09-28 | 2023-12-19 | 上海勘察设计研究院(集团)股份有限公司 | Intelligent soil repair engineering agent injection device that can dynamically adjust |
| CN116037636A (en) * | 2022-12-13 | 2023-05-02 | 煜环环境科技有限公司 | Double-layer pipe double-ring plug injector and soil in-situ restoration method |
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Effective date of registration: 20220302 Address after: 518100 a615, building D, Juji Industrial Park, Yabian xueziwei, Yabian community, Shajing street, Bao'an District, Shenzhen, Guangdong Province Patentee after: Sente soil remediation Research Institute (Shenzhen) Co.,Ltd. Address before: 100176 courtyard 10, East 4th Road, Yongchang, Daxing Economic and Technological Development Zone, Beijing Patentee before: CENTER INT GROUP Co.,Ltd. |