CN214866102U

CN214866102U - High-pressure rotary spraying device for in-situ remediation of contaminated soil

Info

Publication number: CN214866102U
Application number: CN202120544212.1U
Authority: CN
Inventors: 杨成; 胡俊; 李罡烨; 唐王龙; 蒋浩; 蒋洪; 黄文宝; 叶辽羽; 莫海钊; 林春旭
Original assignee: China Construction Fourth Engineering Division Corp Ltd
Current assignee: China Construction Fourth Engineering Division Corp Ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-11-26
Anticipated expiration: 2031-03-16

Abstract

The utility model discloses a high-pressure rotary spraying device for in-situ remediation of contaminated soil, which comprises a drill rod (1); a conical drill bit (2) is arranged at the lower end of the drill rod; a group of drill pipe nozzles (3) which are uniformly distributed in a radial shape are arranged at the joint of the drill pipe and the conical drill bit; the lower end of the drill rod is provided with a group of cutting knives (4) which are uniformly distributed in a radial shape; the end part of each cutting knife is provided with a cutting knife spout (5); the top end of the drill rod is provided with a central hole (6) which is communicated with each drill rod nozzle; a group of liquid channels (7) are uniformly distributed around the central hole, and each liquid channel is respectively communicated with a corresponding cutting knife nozzle; the top surface and the bottom surface of each cutting knife are respectively provided with a row of uniformly distributed rake teeth (8). The utility model discloses a device for the collection pollutes soil cutting, mix, sprays medicine device as an organic whole, pollutes that soil normal position restores the radius big and repair effect good, great improvement the technical treatment means that the deep layer pollutes soil and administers.

Description

High-pressure rotary spraying device for in-situ remediation of contaminated soil

Technical Field

The utility model relates to a be used for polluting prosthetic high pressure of soil normal position and spout device soon belongs to soil heavy metal pollution normal position and administers technical field.

Background

When shallow soil is polluted by heavy metal, the shallow soil is repaired by various means. However, when deep soil is polluted by heavy metals, high-pressure rotary spraying technology is mainly adopted for in-situ remediation and treatment at present. However, the method of in-situ soil remediation by high-pressure jet grouting is limited by some complex geological conditions. For example, for the soil of great compactness, high pressure jet grouting action radius is less, and it is longer to handle consuming time to great field, and high pressure jet grouting field treatment effect highly relies on workman's operation level in addition, and the quantity of nozzle is limited, and when meetting the soil layer that osmotic coefficient is little such as clay, the restoration liquid medicine that the shower nozzle jetted hardly diffuses, and the restoration effect is often not too ideal. Therefore, the prior art still has the defects and needs to be further improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for polluting prosthetic high pressure of soil normal position and spout device soon to improve injection efficiency and injection scope, thereby solve the not enough of prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model relates to a high-pressure rotary spraying device for in-situ remediation of contaminated soil, which comprises a drill rod; a conical drill bit is arranged at the lower end of the drill rod; a group of drill rod nozzles which are uniformly distributed in a radial shape are arranged at the joint of the drill rod and the conical drill bit; the lower end of the drill rod is provided with a group of cutting knives which are uniformly distributed in a radial shape; the end part of each cutting knife is provided with a cutting knife nozzle; the top end of the drill rod is provided with a central hole which is communicated with each drill rod nozzle; a group of liquid channels are uniformly distributed around the central hole, and each liquid channel is respectively communicated with a corresponding cutting knife nozzle; the top surface and the bottom surface of each cutting knife are respectively provided with a row of uniformly distributed rake teeth.

In the high-pressure rotary spraying device for in-situ remediation of the polluted soil, the top surface and the bottom surface of the cutting knife are both arc surfaces; and a blade is formed at the intersection of the arc surfaces of the top surface and the bottom surface.

In the high-pressure rotary spraying device for in-situ remediation of contaminated soil, the cutting knife is rod-shaped, and the rake teeth are uniformly distributed along the length direction of the cutting knife.

In the high-pressure rotary spraying device for in-situ remediation of contaminated soil, the rake teeth are in the shape of a conical rod, and one large-diameter end of the conical rod is welded with the arc surface of the cutting knife into a whole.

In the high-pressure rotary spraying device for in-situ remediation of contaminated soil, the drill rod, the cutting knife and the rake teeth are all made of high-strength metal materials.

Since the technical scheme is used, the utility model discloses with prior art comparison, the utility model discloses a spout the high pressure soon and be connected with oval column form cutter, and the spout setting on drilling rod and cutter, form a collection contaminated soil cutting, mix, spray medicine device as an organic whole, make the big and repair effect of contaminated soil normal position prosthetic radius good. The utility model discloses injection efficiency and injection scope have been improved greatly to still effectively improve the technical treatment means of administering deep contaminated soil.

Drawings

FIG. 1 is a schematic view of the structure of the apparatus used in the present invention;

fig. 2 is a schematic view of the arrangement of the liquid flow passage inside the device used in the present invention.

The labels in the figures are: 1-drill rod, 2-conical drill bit, 3-drill rod nozzle, 4-cutter, 5-cutter nozzle, 6-center hole, 7-liquid channel, 8-rake teeth, 9-arc surface and 10-blade.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The utility model relates to a high-pressure rotary spraying device for in-situ remediation of contaminated soil, which comprises a drill rod 1, as shown in figures 1 and 2; the lower end of the drill rod 1 is provided with a conical drill bit 2; a group of drill rod nozzles 3 which are uniformly distributed in a radial shape are arranged at the joint of the drill rod 1 and the conical drill bit 2; the lower end of the drill rod 1 is provided with a group of cutting knives 4 which are uniformly distributed in a radial shape; the end part of each cutting knife 4 is provided with a cutting knife nozzle 5; the top end of the drill rod 1 is provided with a central hole 6, and the central hole 6 is communicated with each drill rod nozzle 3; a group of liquid channels 7 are uniformly distributed around the central hole 6, and each liquid channel 7 is respectively communicated with the corresponding cutting knife nozzle 5; the top surface and the bottom surface of each cutting knife 4 are respectively provided with a row of rake teeth 8 which are evenly distributed. The top surface and the bottom surface of the cutter 4 are both arc surfaces 9; the blade 10 is formed at the intersection of the circular arc surfaces 9 of the top and bottom surfaces. The cutting knife 4 is rod-shaped, and the rake teeth 8 are uniformly distributed along the length direction of the cutting knife 4. The rake teeth 8 are in the shape of a conical rod, and one end of the conical rod with the large diameter is welded with the arc surface 9 of the cutting knife 4 into a whole. The drill rod 1, the cutting knife 4 and the rake teeth 8 are all made of high-strength metal materials.

Adopt above-mentioned the utility model discloses the device pollutes soil normal position prosthetic construction method does, and this method is under construction according to following step:

step 1, performing engineering geological exploration on a polluted area before construction, and finding out heavy metal pollution sources, physical and mechanical indexes of soil layers and standard exceeding pollution source types;

step 2, aiming at the heavy metal pollution category, preparing corresponding liquid medicine in a laboratory, and determining the reasonable liquid medicine proportion of each soil layer;

step 3, performing typical test construction on site, and determining optimal construction process parameters for spraying pesticide on different soil layers;

step 4, reasonably dividing the processing range according to the pollution field area, marking each processing position, entering the mechanical equipment field, and positioning the drilling machine;

step 5, determining the optimal process parameters according to data obtained by typical test construction, and performing high-pressure rotary spraying in-situ remediation on the polluted area, wherein if the radius of a drilling point needing to be processed is smaller, the medicine is only sprayed in a central hole, and if the radius of a drilling point needing to be processed is larger, the medicine is sprayed into 4 channels and is opened simultaneously;

step 6, after the drilling machine drills into the deeply polluted soil to be treated, slowly rotating and lifting the drill rod, and simultaneously carrying out high-pressure guniting operation; soil is smashed through a cutting knife and rake teeth on the cutting knife in the rotation process of the drill rod, liquid medicine is well mixed with the soil in a high-pressure state, and the action range of the liquid medicine is greatly improved by means of the flow guiding effect of the high-pressure liquid medicine, so that the liquid medicine is well contacted with the polluted soil;

step 7, when the drill rod and the injection rotation are lifted to the floor, a drilling liquid injection treatment process is completed;

and 8, moving the drilling machine to the next position for marking, and repeating the step 5 and the step 6 until the soil in-situ remediation of the whole polluted area is completed.

Examples

The apparatus of this example is shown in figures 1 and 2.

The utility model discloses a device includes drilling rod 1, and drilling rod 1 is cylinder high strength metal material finished piece, and 1 central authorities of drilling rod are equipped with centre bore 6, and centre bore 6 equipartition all around has three liquid passage 7, and a centre bore 6 and three liquid passage 7 are at four liquid medicine passageways of 1 inside formation of drilling rod. Three cutters 4 are radially and uniformly distributed at the lower end of the drill rod 1, the included angle between each cutter 4 is 120 degrees, and the position of each cutter 4 corresponds to the position of the corresponding liquid channel 7. The cutting knife 4 is of a rod-shaped structure, the top surface and the bottom surface of the cutting knife 4 are both arc surfaces 9, a cutting edge 10 is formed at the intersection of the arc surfaces 9 of the top surface and the bottom surface, and the cross section of the cutting knife 4 is similar to an ellipse. One end of the cutting knife 4 is connected with the side face of the bottom end of the drill rod 1, the other end of the cutting knife 4 is suspended, and a cutting knife nozzle 5 is arranged at the suspended end of the cutting knife 4. The lower end of the drill rod 1 is provided with a conical drill bit 2, and the conical drill bit 2 is positioned below the cutting knife 4. Three drill rod nozzles 3 which are distributed radially are uniformly distributed at the joint of the conical drill bit 2 and the drill rod 1, and the drill rod nozzles 3 are positioned between the two cutters 4. The three drill rod nozzles 3 are communicated with a central hole 6 in the drill rod 1. The cutting knife 4 is used for cutting soil, a row of vertically arranged rake teeth 8 are arranged on the top surface and the bottom surface of the cutting knife 4, the top end of the drill rod 1 is connected with power equipment, and the lower end of the drill rod is connected with a drill bit. A central hole 6 and a liquid channel 7 at the top end of the drill rod 1 are connected with high-pressure liquid medicine, so that the liquid medicine is directly sprayed out from a drill rod nozzle 3 and a cutting knife nozzle 5 to enlarge the spraying range; the soil is loosened and repaired conveniently when the drill rod 1 drills.

The positions of the three liquid channels 7 correspond to the angular positions of the three cutters 4 and are simultaneously symmetrical to the central hole 6. The liquid medicine can be sprayed better when the drill rod 1 is driven downwards and lifted upwards, and the cutting knife 4 is provided with a certain number of rake teeth 8, so that the soil can be cut better.

Adopt the utility model discloses a when high pressure spouts device soon pollutes soil normal position restoration construction, can be under construction according to following step:

step 1, performing engineering geological exploration and heavy metal pollution source detection on a polluted field area before construction, and determining physical and mechanical indexes of soil layers and the category of overproof pollution sources;

step 2, aiming at heavy metal pollution, matching the liquid medicine in a laboratory according to a conventional mode and determining a reasonable liquid medicine ratio of each soil layer;

step 4, reasonably dividing the processing range according to the polluted field area, marking each processing position, entering the mechanical equipment, and positioning the drilling machine;

step 5, performing site contaminated soil construction according to the optimal construction process parameters of the test; after the drilling machine drills polluted soil to be treated deeply, the lifting drill rod is slowly rotated, and the three high-pressure grout spraying ports are opened simultaneously to carry out grout spraying operation, in the process, the soil is cut by the three slices and the rake teeth, the liquid medicine is well mixed with the soil under a high-pressure state, and the action range is greatly lifted by virtue of the diversion effect of high-pressure water, so that the liquid medicine is well contacted with the polluted soil;

step 6, lifting the drill rod and the spraying rotation to the floor to complete a drilling liquid medicine spraying treatment process (the curing agent in the next stage refers to the process); and (5) the next drilling hole refers to the steps, and the in-situ treatment of the contaminated soil in the field can be completed by repeating the steps.

The utility model discloses a spout the high pressure soon and be connected with cylindroid cutter, and the spout setting forms a collection contaminated soil cutting, mix, sprays medicine device as an organic whole on drilling rod and cutter, pollutes that the soil normal position is restoreed the radius big and repair effect good, the great improvement deep technical treatment means of polluting soil and administering.

Claims

1. A high-pressure rotary spraying device for in-situ remediation of contaminated soil comprises a drill rod (1); the method is characterized in that: a conical drill bit (2) is arranged at the lower end of the drill rod (1); a group of drill rod nozzles (3) which are uniformly distributed in a radial shape are arranged at the joint of the drill rod (1) and the conical drill bit (2); the lower end of the drill rod (1) is provided with a group of cutting knives (4) which are uniformly distributed in a radial shape; the end part of each cutting knife (4) is provided with a cutting knife nozzle (5); the top end of the drill rod (1) is provided with a central hole (6), and the central hole (6) is communicated with each drill rod nozzle (3); a group of liquid channels (7) are uniformly distributed around the central hole (6), and each liquid channel (7) is respectively communicated with the corresponding cutting knife nozzle (5); the top surface and the bottom surface of each cutting knife (4) are respectively provided with a row of uniformly distributed rake teeth (8).

2. The high-pressure rotary spraying device for in-situ remediation of contaminated soil according to claim 1, wherein: the top surface and the bottom surface of the cutting knife (4) are both arc surfaces (9); a blade (10) is formed at the intersection of the arc surfaces (9) of the top surface and the bottom surface.

3. The high-pressure rotary spraying device for in-situ remediation of contaminated soil according to claim 1, wherein: the cutting knife (4) is rod-shaped, and the rake teeth (8) are uniformly distributed along the length direction of the cutting knife (4).

4. The high-pressure rotary spraying device for in-situ remediation of contaminated soil according to claim 1, wherein: the rake teeth (8) are in a conical rod shape, and one end with the large diameter of the conical rod is welded with the arc surface (9) of the cutting knife (4) into a whole.

5. The high-pressure rotary spraying device for in-situ remediation of contaminated soil according to claim 1, wherein: the drill rod (1), the cutting knife (4) and the rake teeth (8) are all made of high-strength metal materials.