CN212177073U

CN212177073U - Drill body unit, drill body and spray head for high-pressure rotary spraying grouting spray head

Info

Publication number: CN212177073U
Application number: CN202020330027.8U
Authority: CN
Inventors: 罗帅训; 董朝晖; 张宝林; 王龙; 吕佩东
Original assignee: Shaanxi Xitan Geological Equipment Co ltd
Current assignee: Shaanxi Xitan Geological Equipment Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-12-18
Anticipated expiration: 2030-03-16

Abstract

The utility model relates to a bore body unit, bore body and shower nozzle for high pressure jet grouting shower nozzle. The drill body unit is of a cylindrical cavity structure, and a channel is axially penetrated through the drill body unit and at least comprises a water diversion channel and a cutting water channel; at least 3 nozzles are embedded on the drill body unit and are communicated with the channel, and at least one nozzle is internally connected with a cutting water channel; the channels also include at least 1 slurry channel, at least one nozzle interconnect slurry channel; the channel also comprises at least 1 steam channel, and at least one nozzle is internally provided with the steam channel. Through the reasonable arrangement of the component structure, the multiple channels and the multiple nozzles are matched, the method is suitable for the RJP construction method and the common rotary spraying construction method, can be configured in real time according to the requirements of working conditions during construction, has strong operability, and particularly has a great help effect on temporary change of a construction spraying scheme under complex working conditions or exploration of test pile construction before formal construction.

Description

Drill body unit, drill body and spray head for high-pressure rotary spraying grouting spray head

Technical Field

The utility model relates to a geological exploration technical field, concretely relates to bore body unit, bore body and shower nozzle for high pressure jet grouting shower nozzle.

Background

The spray head (commonly called bottom pipe) is used as an important tool for high-pressure rotary jet grouting construction, and has the functions of outputting media, distributing media and the like. The nozzle outputs different media from different pipelines so as to cut soil body or form a consolidation body by grouting. Common media in high pressure rotary jet grouting construction are hardening liquid (cement slurry), water, compressed air, hydraulic oil, and the like. At present, the shower nozzle on the market is mostly single tube shower nozzle, double-barrelled shower nozzle, three pipe shower nozzles, can input three kinds of different medium at most and just two pipelines can bear the high pressure at most, and meanwhile, each injection mouth is 0 distribution each other (be that upper and lower nozzle is a line distribution) or 180 distribution at most on the shower nozzle, leads to the construction process limited, and then influences the efficiency of construction.

Through the rapid development in recent years in the field of high-pressure rotary jet grouting construction, construction methods are gradually switched from common rotary jet (namely a single pipe method, a double pipe method and a triple pipe method) to RJP (commonly known as a double high-pressure method) and common rotary jet method and the like, the injection mode during construction is developed from single-nozzle single-angle injection in the past to multi-nozzle multi-angle injection, and different injection schemes are adopted under different working conditions. Therefore, the spray head in the existing market can not meet the construction requirement of the new process, and the construction method is greatly limited.

Disclosure of Invention

To the problem, the utility model aims at providing a bore body unit, bore body and shower nozzle for high pressure jet grouting nozzle, through the reasonable setting to part structure, multichannel, many nozzles cooperate, each nozzle angle is 0 °/90 °/180 ° distribution respectively, be applicable to RJP worker method and ordinary jet grouting worker method, and can require real-time configuration according to the operating mode during the construction, and maneuverability is strong, especially to changing the construction temporarily under the complicated operating mode and spraying scheme or the official experimental stake construction before the construction groping have great help.

In order to achieve the above object, the utility model discloses the technical scheme who takes includes:

a drill body unit for a high-pressure rotary spraying grouting spray head is of a cylindrical cavity structure, and a channel is axially penetrated through the drill body unit and at least comprises a water diversion channel and a cutting water channel; at least 3 nozzles are embedded on the drill body unit and are communicated with the channel, and at least one nozzle is internally connected with a cutting water channel; the channels also include at least 1 slurry channel, at least one nozzle interconnect slurry channel; the channel also comprises at least 1 steam channel, and at least one nozzle is internally provided with the steam channel.

Optionally, the nozzle axes are at 0 °, 90 ° or 180 ° to each other.

Optionally, the diameter of the slurry channel > the diameter of the water channel > the diameter of the steam channel.

A drill body for a high-pressure rotary jet grouting spray head comprises at least two groups of drill body units which are axially connected.

Furthermore, a hole guiding water plug is arranged at the end part of the hole guiding water channel.

Furthermore, a channel axially penetrating through the inner cavity of the drill body is connected in a high-pressure sealing manner through a connecting sleeve.

Optionally, the drill body is formed by sequentially axially connecting a first drill body unit, a second drill body unit, a third drill body unit and a fourth drill body unit.

A spray head for high-pressure rotary spraying grouting comprises the drill body and a drill bit axially connected with the end of the drill body.

Optionally, the drill body is formed by sequentially axially connecting a first drill body unit, a second drill body unit, a third drill body unit and a fourth drill body unit; the channels comprise 1 water diversion channel, 1 cutting water channel, 2 slurry channels and 2 steam channels; is communicated with the channel, and 8 nozzles are embedded on the drill body.

Furthermore, a high-pressure sealing element is arranged on the channel, and the channel is pressed at the maximum pressure of 40 MPa.

Compared with the prior art, the utility model following beneficial effect has:

(1) the utility model discloses a bore body unit, bore body and shower nozzle for high pressure jet grouting shower nozzle, through the reasonable setting to component structure, multichannel, many nozzles cooperate, each nozzle angle is 0/90/180 distribution respectively, be applicable to RJP worker's method and ordinary jet grouting worker's method, and can require real-time configuration according to the operating mode during the construction, and maneuverability is strong, especially, the test pile construction before changing the construction temporarily under the complicated operating mode and spraying scheme or formal construction is sartorious has great help.

(2) The utility model discloses a bore body unit, bore body and shower nozzle for high-pressure jet grouting shower nozzle has independent draw hole water passageway through the reasonable setting to the part structure, separates with cutting water passageway, and maneuverability is strong during the construction, and simple and convenient laborsaving has improved the efficiency of construction.

(3) The utility model discloses a bore body unit, bore body and shower nozzle for high-pressure jet grouting shower nozzle, through the reasonable setting to the part structure, every passageway all is provided with the high-pressure sealing member, can bear the high pressure and reach 40MPa, and each passageway is not cluster leak-tight, mutual noninterference.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

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

FIG. 2 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 3 is a perspective view of the high pressure jet grouting nozzle of the present invention;

FIG. 4 is a left side view of FIG. 3

The reference numerals in the figures denote:

1, 1-1, a first drilling body unit; 1-2 second drilling unit; 1-3 third drilling unit; 1-4 fourth drilling unit; 2, drilling a bit; 3 connecting sleeves; 4 channels, 4-1 slurry channel, 4-11 large-drift-diameter channel, 4-12 small-drift-diameter channel, 4-2 leading-hole water channel, 4-3 cutting water channel and 4-4 steam channel; 5, a nozzle; 6-lead-hole water plug

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings, which are provided for purposes of illustration and not limitation.

A drill body unit for a high-pressure rotary spraying grouting spray head is of a cylindrical cavity structure, a channel 4 penetrates through the drill body unit in the axial direction, and the channel 4 at least comprises a water diversion channel 4-2 and a cutting water channel 4-3; at least 3 nozzles 5 are embedded on the drilling body unit and communicated with the channel 4, and at least one nozzle 5 is internally connected with a cutting water channel 4-3; the channel 4 also comprises at least 1 slurry channel 4-1, and at least one nozzle 5 is connected with the slurry channel 4-1; the channel 4 further comprises at least 1 steam channel 4-4, at least one nozzle 5 connecting the steam channel 4-4. The axes of the nozzles 5 are at 0 °, 90 ° or 180 ° to each other. The diameter of the slurry channel 4-1 is larger than the diameter of the water channel and the diameter of the steam channel 4-4. The water diversion channel 4-2 and the cutting water channel 4-3 are water channels. In the spray head in the existing market, a hole leading water channel is used as a cutting water channel, a steel ball needs to be put into the channel after the drilling is finished, and the hole leading water channel is changed into the cutting water channel for use. The process is more complicated, and more importantly, the cutting water seal is sealed with the conical surface at the bottom of the channel by the steel ball, the sealing effect is poor, and further the construction efficiency and progress are influenced. An independent water diversion channel 4-2 is arranged and separated from the cutting water channel 4-3, the operability is strong, the operation is simple and labor-saving, and the construction efficiency is improved. The nozzles 5 are high-precision hot-charging process nozzles, and are high in machining precision and long in service life. The angles of the nozzles 5 are respectively distributed at 0 degree/90 degrees/180 degrees, the method is suitable for an RJP construction method and a common rotary spraying construction method, can be configured in real time according to the requirements of working conditions during construction, has strong operability, and particularly has a great help effect on temporary change of a construction spraying scheme under complex working conditions or exploration of test pile construction before formal construction.

A drill body 1 for a high-pressure rotary jet grouting spray head comprises at least two groups of drill body units which are axially connected with each other. The end part of the leading hole water channel 4-2 is provided with a leading hole water plug 6. The water plug 6 for leading holes sprays a large amount of water for lubricating the drill bit when the drill bit is drilled.

The channel 4 axially penetrated in the inner cavity of the drill body 1 is hermetically connected with the drill body by a connecting sleeve 3 under high pressure. The connecting sleeve 3 is a high-pressure sealing element, adopts high-quality Fluororubber (FKM) material, has good high temperature resistance and medium resistance, can still keep good medium resistance and compression deformation resistance even at high temperature, and can reach 40MPa to the maximum. When the nozzle is designed, all channels can bear high pressure, and when the nozzle is used, only the coordinate position of each channel is required to be noticed whether the coordinate position of each channel is consistent with the coordinate position of a drill rod hole, and the high-pressure channel, the medium-pressure channel and the low-pressure channel are not required to be distinguished; and all channels are not connected in series or not leaked and not interfered with each other.

The drill body 1 is formed by sequentially axially connecting a first drill body unit 1-1, a second drill body unit 1-2, a third drill body unit 1-3 and a fourth drill body unit 1-4. The drill body 1 can be formed by axially connecting a plurality of drill body units according to the practical application condition, such as the combination of 4 drill body units. All the drill body units are connected in a high-pressure sealing mode through high-pressure sealing pieces, the sealing pieces are made of high-quality Fluororubber (FKM), high temperature resistance and medium resistance are good, even under the high-temperature condition, the good medium resistance and compression deformation resistance can be still kept, and the maximum pressure can reach 40 MPa.

A spray head for high-pressure rotary spraying grouting comprises the drill body 1 and a drill bit 2 which is axially connected with the end of the drill body 1. The drill body 1 is formed by sequentially axially connecting a first drill body unit 1-1, a second drill body unit 1-2, a third drill body unit 1-3 and a fourth drill body unit 1-4; the channels 4 comprise 1 water diversion channel 4-2, 1 cutting water channel 4-3, 2 slurry channels 4-1 and 2 steam channels 4-4; and 8 nozzles 5 are embedded on the drill body 1 and communicated with the channel 4. The existing spray heads in the market are commonly provided with a single-pipe spray head, a double-pipe spray head and a triple-pipe spray head, and are respectively provided with a single-pipe drill rod, a double-pipe drill rod and a triple-pipe drill rod, so that the spray heads are basically suitable for common rotary spraying construction and cannot meet the application of an RJP construction method (commonly called a double-high-pressure construction method); the spray head can occupy 6 pipelines at most simultaneously, and the six-layer pipe drill construction is met. During construction, a channel meeting the working condition requirement can be selected for use according to the construction requirement, so that the construction requirement of a novel construction process RJP construction method (commonly called a double high pressure construction method) is met, and meanwhile, the construction method can be used for construction of a common rotary spraying construction method.

The sprayer is provided with 8 nozzles 5 at most, the number of the nozzles 5 is selected independently according to actual needs during use, if other nozzles 5 are not used, only corresponding plugs are needed to be installed, the operability is strong during actual construction, and the sprayer particularly has a great help effect on temporary change of a construction spraying scheme under complex working conditions or test pile construction before formal construction.

The high-pressure sealing element is arranged on the channel 4, the sealing element is made of high-quality Fluororubber (FKM), the high-temperature resistance and the medium resistance are good, the good medium resistance and the compression deformation resistance can be still kept even under the high-temperature condition, and the maximum pressure of the channel 4 is 40 MPa.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of the various embodiments of the present disclosure can be made, and the same should be considered as the inventive content of the present disclosure, as long as the combination does not depart from the spirit of the present disclosure.

Claims

1. A drill body unit for a high-pressure rotary spraying grouting spray head is of a cylindrical cavity structure, and a channel (4) is axially arranged along the drill body unit in a penetrating manner, and is characterized in that the channel (4) at least comprises a water diversion channel (4-2) and a cutting water channel (4-3);

at least 3 nozzles (5) are embedded on the drilling body unit and communicated with the channel (4), and the cutting water channel (4-3) is connected in at least one nozzle (5);

the channel (4) also comprises at least 1 slurry channel (4-1), and at least one nozzle (5) is used for connecting the slurry channel (4-1);

the channel (4) also comprises at least 1 steam channel (4-4), and the steam channel (4-4) is connected in at least one nozzle (5).

2. A drilling unit for high-pressure jet grouting injection nozzles according to claim 1, characterized in that the nozzles (5) have axes at 0 °, 90 ° or 180 ° to each other.

3. The drilling unit for high-pressure jet grouting nozzles according to claim 2, characterized in that the diameter of the grout passage (4-1) is > the diameter of the water passage > the diameter of the steam passage (4-4).

4. A drill body for a high-pressure jet grouting nozzle, characterized in that the drill body (1) comprises at least two sets of drill body units axially connected together, said drill body units being as claimed in any one of claims 1-3.

5. The drill body for the high-pressure jet grouting nozzle as claimed in claim 4, characterized in that the end of the pilot water channel (4-2) is provided with a pilot water plug (6).

6. The drill body for the high-pressure jet grouting nozzle as claimed in claim 4, characterized in that the passages (4) axially penetrating through the inner cavity of the drill body (1) are connected in a high-pressure sealing manner by the connecting sleeve (3).

7. The drill body for the high-pressure jet grouting nozzle according to any one of claims 4 to 6, characterized in that the drill body (1) is formed by connecting a first drill body unit (1-1), a second drill body unit (1-2), a third drill body unit (1-3) and a fourth drill body unit (1-4) in the axial direction in sequence.

8. A nozzle head for high-pressure rotary jet grouting, characterized in that the nozzle head comprises a drill body (1) according to any one of claims 4-7, and a drill bit (2) mounted on the end of the drill body (1) in axial connection.

9. The nozzle for high-pressure jet grouting according to claim 8, characterized in that the drill body (1) is formed by connecting a first drill body unit (1-1), a second drill body unit (1-2), a third drill body unit (1-3) and a fourth drill body unit (1-4) axially in sequence;

the channel (4) comprises 1 water diversion channel (4-2), 1 cutting water channel (4-3), 2 slurry channels (4-1) and 2 steam channels (4-4);

is communicated with the channel (4), and 8 nozzles (5) are embedded on the drill body (1).

10. The nozzle for high-pressure rotary jet grouting according to claim 8 or 9, characterized in that the channel (4) is provided with a high-pressure seal, and the channel (4) is pressurized at the maximum of 40 MPa.