CN111151187A

CN111151187A - Single-slurry blending device for drilling and sealing

Info

Publication number: CN111151187A
Application number: CN202010098045.2A
Authority: CN
Inventors: 康卫; 刘双红; 李冬; 黄志良; 付小畅; 郝雪斌
Original assignee: China Construction Fourth Engineering Division Corp Ltd
Current assignee: China Construction Fourth Engineering Division Corp Ltd
Priority date: 2020-02-18
Filing date: 2020-02-18
Publication date: 2020-05-15
Anticipated expiration: 2040-02-18
Also published as: CN111151187B

Abstract

The invention relates to a single slurry blending device for hole sealing of a drilled hole, which consists of a feeding tank, a material mixing pipe, a motor, a spiral material pushing paddle and a water inlet pipe; the water inlet pipe is sequentially divided into a first mixing section and a second mixing section according to the feeding direction, at least two single-slurry nozzles are axially arranged in the first mixing section, a mixing cavity is formed at the rear side of each single-slurry nozzle, the spiral pushing paddle is installed in the mixing cavity, and the motor is used for driving the spiral pushing paddle; the mixing pipe is provided with a material returning plate in front of each single-fluid slurry nozzle and used for rebounding the single-fluid slurry sprayed by the single-fluid slurry nozzle to the outer wall of the single-fluid slurry nozzle to form rotational flow; the second compounding section has set gradually at least two sets of swash plates and baffle, and the swash plate is down, the baffle is last for the single liquid thick liquid along the swash plate impact on the baffle then flow down finally send into grouting device through the compounding pipe discharge gate, thereby accomplish the direct compounding configuration in the pay-off process, practice thrift construction flow.

Description

Single-slurry blending device for drilling and sealing

Technical Field

The invention relates to the field of drilling and sealing single-fluid slurry, in particular to a single-fluid slurry blending device for drilling and sealing.

Background

Single fluid grouting defines grouting using one slurry and one set of slurry delivery systems. The portable grouting pump is mainly used in the construction of mines, tunnels, water conservancy projects, subways, buildings and bridges, is used for grouting and water plugging, filling gaps, breaking rock strata, grouting and consolidating, grouting anchor cables, repairing local defects of road and railway subgrade grout turnover and the like, treating soft foundations, and eliminating underground hidden dangers in flood fighting and emergency rescue. For example, in the blasting construction process, the holes are drilled and the explosives are buried, after blasting drilling and core drilling are finished, hole sealing treatment is carried out on each drilled hole, hole sealing is carried out in a mode of injecting single-fluid slurry, the single-fluid slurry can be prepared according to the water cement ratio of 1:1 (meanwhile, adjustment can be carried out according to the actual situation on site, the purpose of filling is achieved), and during grouting, site managers and supervision engineers jointly witness the evidence, strictly operate and ensure that the holes are tightly sealed.

In the prior art, single slurry is generally prepared by using a concrete mixer or a stirring tank and other equipment according to the proportion of prefabricated mixed materials, and then is transported to a construction site in a tank car mode.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a single-slurry mixing device for hole drilling and sealing, which can realize mixing immediately after use, has simple equipment composition and light weight, can be particularly matched with a common truck to realize flexible operation of a working point, is particularly suitable for urban operation, and reduces material waste.

The purpose of the invention is realized by the following technical scheme:

a single slurry blending device for hole sealing of a drilled hole is composed of a feeding tank, a material mixing pipe, a motor, a spiral material pushing paddle and a water inlet pipe;

the feeding tank and the water inlet pipe are communicated with the mixing pipe and are used for feeding single-liquid slurry materials and water into the mixing pipe;

the water inlet pipe is sequentially divided into a first mixing section and a second mixing section according to the feeding direction, at least two single-slurry nozzles are axially arranged in the first mixing section, the single-slurry nozzles face the single-slurry feeding direction, a mixing cavity is formed at the rear side of each single-slurry nozzle, the spiral pushing paddle is installed in the mixing cavity, and the motor is used for driving the spiral pushing paddle;

the mixing pipe is provided with a material returning plate in front of each single-fluid slurry nozzle, the material returning plate is close to the single-fluid slurry nozzles and used for rebounding the single-fluid slurry sprayed by the single-fluid slurry nozzles to the outer walls of the single-fluid slurry nozzles to form rotational flow;

the second compounding section has set gradually at least two sets of swash plates and baffle, the swash plate is down, the baffle is last for the single thick liquid along the swash plate impact on the baffle then flows down and finally sends into grouting device through the compounding pipe discharge gate.

Compare with traditional agitator tank or concrete mixer, this scheme is accomplished the stirring process directly in one section conveying pipe, divide into two sections compounding in the conveying pipe, make the single liquid thick liquid directly accomplish the compounding at raw materials pay-off in-process, reach the effect of mixing promptly and using promptly, the engineering delay and the waste that the compounding was not enough or the compounding caused under had both avoided traditional mode, the problem of appearing the sediment after still having avoided traditional compounding simultaneously, traditional single liquid thick liquid all need constantly stir (adopt the cement tank car) in transportation process, and this scheme does not have single liquid thick liquid storage process, direct use after the configuration comes out, thereby construction equipment has been practiced thrift.

Further, single liquid thick liquid nozzle and the coaxial setting of compounding pipe, single liquid thick liquid nozzle export are located the compounding pipe axle center, the purpose that adopts coaxial setting makes single liquid thick liquid can sputter back material evenly distributed and compounding intraductal under the effect of returning the flitch after the blowout to reinforcing compounding degree of consistency realizes quick compounding.

Furthermore, all the spiral pushing paddles are coaxially connected, the tail ends of the rotating shafts of the spiral pushing paddles are installed on the last material returning plate, the coaxial installation has the advantages that the material mixing speed can be kept consistent, equipment can be saved, and the stirring driving can be realized only by one motor.

Furthermore, the area of the return plate is larger than the area of the outlet of the single-liquid slurry nozzle and smaller than half of the section of the mixing pipe.

Furthermore, the material returning plate is circular, the material returning plate is fixedly connected with the inner wall of the mixing pipe through the supporting arm, the material returning plate is a plane plate or the material receiving surface is in a pit shape, the material returning plate is designed to be circular and most suitable for fluid to pass through, mixed flow is avoided, the material receiving surface is designed to be a plane or a pit, the material returning plate has the advantages that the material returning plate is even, particularly in a pit shape, and the material returning plate and the material discharging sprayed by the nozzle can impact each other to form mixed materials according to the principle of an incident angle and a reflection angle.

Furthermore, the single-fluid slurry nozzle is in a sharp-nose shape, so that the single-fluid slurry in the mixing cavity is flushed out from the single-fluid slurry nozzle in a high pressure mode under the action of the spiral pushing paddle, and is sputtered and refluxed on the material returning plate.

Furthermore, the inclination angle of the inclined plate is 45-60 degrees, the height of the inclined plate is the radius of the mixing pipe, the dropping length of the baffle plate exceeds the highest point of the inclined plate, and the angle design has the advantages that the mixing material can be enabled to be lifted along the inclined plate and then impacted on the baffle plate to fall down, and secondary mixing is completed.

Further, the mixing pipe front end is sealed, and the rear end is as the discharge gate, mixing pipe front end lateral wall with feeding tank and inlet tube switch on.

Furthermore, the motor is arranged on the front end face, and a rotating shaft of the motor and the front end face of the mixing pipe form shaft seal.

Furthermore, the lower part of the feeding tank is conical, a discharge port of the feeding tank adopts a spiral pusher for feeding, and the water inlet pipe is provided with a valve;

the spiral material pushing device is characterized by further comprising a control panel, wherein the control panel controls the rotating speed of the spiral material pushing device and the opening degree of a valve of the water inlet pipe according to the proportion of the mixed material and the water.

The advantage of this pay-off mode lies in that operating personnel only need accomplish the compounding proportion can, then directly send into the feed tank in, adjust the proportion of dry thick liquid and water by control panel according to the construction demand to make the operation more simple swift.

The invention has the beneficial effects that:

(1) the feeding pipe is used as the mixing pipe to directly mix materials, so that a stirring bin used in the traditional mode is omitted, and material waste caused by excessive ingredients can be avoided;

(2) the single-liquid slurry can be prepared and used immediately in the feeding process, so that the solid deposition of the single-liquid slurry can be avoided, the use quality of the single-liquid slurry is effectively improved, and the traditional stirring equipment can be saved;

(3) the multi-section mixing is designed in the mixing pipe, and two modes are adopted for mixing, so that dry materials and water repeatedly impact in the mixing pipe to form turbulent flow;

(4) all kinds of equipment quality that this scheme provided are light, and small, can the vehicle-mounted remove wantonly to practicality and city construction more improve the operating efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the return plate installation of the present invention;

FIG. 3 is a schematic view of a concave-shaped receiving surface of the returning plate according to the present invention;

FIG. 4 is a schematic diagram of the working principle of the present invention; .

Detailed Description

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.

As shown in figure 1, the single-slurry mixing device for hole sealing of the drill hole consists of a feeding tank 1, a mixing pipe 2, a motor 3, a spiral pushing paddle 4 and a water inlet pipe 5. Its essence of compounding pipe 2 in this scheme is one section of slip casting pipe, and its difference lies in that the diameter ratio slip casting pipe of compounding pipe 2 is bigger, and its purpose is because the compounding process is in order to accomplish to the compounding pipe 2, has the stirring repeatedly, and the slip casting pipe is bigger than in its required space, and nevertheless on concrete design, the diameter of compounding pipe 2 is no longer than the twice of slip casting pipe diameter and is the best. The feeding tank 1 and the water inlet pipe 5 are communicated with the mixing pipe 2 and are used for feeding single-liquid slurry materials and water into the mixing pipe 2; the lower part of the feeding tank 1 is conical, so that dry materials can be collected and conveyed conveniently, a discharge port 11 of the feeding tank 1 adopts a spiral pusher 12 for feeding, and a valve is arranged on the water inlet pipe 5. The spiral pusher 12 is adopted for feeding, so that the feeding amount can be accurately controlled, meanwhile, the flow of the water inlet pipe 5 is controlled by the valve, the accurate control of water supply can be realized, and finally, the control is carried out by a control panel which controls the rotating speed of the spiral pusher 12 and the valve opening degree of the water inlet pipe 5 according to the proportion of mixed materials and water, so that the accurate feeding is realized, and the quality of single slurry obtained by configuration is up to the standard or basically up to the standard. The water inlet pipe 5 is divided into a first mixing section and a second mixing section in turn according to the feeding direction, but it should be noted that the first mixing section and the second mixing section are not obviously demarcated, are different only in terms of nomenclature, and are essentially a section of length in the mixing pipe 2. Be provided with two at least single thick liquid nozzles 21 along the axial in the first material mixing section, single thick liquid nozzle 21 is towards single thick liquid pay-off direction, and every single thick liquid nozzle 21 rear side forms one section material mixing chamber M, and installation spiral material pushing paddle 4 in the material mixing chamber M, motor 3 are used for driving spiral material pushing paddle 4. Referring to fig. 1, in the present embodiment, only 2 single slurry nozzles 21 are illustrated, and the arrangement of the plurality of single slurry nozzles 21 is the same as that of the single slurry nozzles, only the number of the single slurry nozzles is increased. As shown in figure 1, the feeding end is arranged at the right end of the mixing pipe 2, so that the left end is used as a discharge hole, and the first mixing section is arranged on the right side and the second mixing section is arranged on the left side. The nozzles of the single-fluid nozzle 21 are directed to the left, so that two mixing chambers M are formed in the first mixing section, i.e. one mixing chamber M each between the first single-fluid nozzle 21 and the right end of the mixing pipe 2 and between the two single-fluid nozzles 21. The mixing and feeding are completed through the spiral pushing paddle 4 in the mixing cavity M, the single-slurry nozzle 21 is in a sharp-mouth shape, single slurry in the mixing cavity M is high-pressure and rushes out from the single-slurry nozzle 21 under the action of the spiral pushing paddle 4, sputtering backflow is carried out on the material returning plate 22, and the single-slurry nozzle 21 is far smaller than the pipe diameter of the mixing pipe 2, so that slurry after mixing is in a high-pressure shape when sprayed out from the single-slurry nozzle 21. In order to complete the re-mixing, the mixing pipe 2 is provided with a material returning plate 22 in front of each single-fluid slurry nozzle 21, that is, the material returning plate 22 is arranged on the left side of the single-fluid slurry nozzle 21, and the material returning plate 22 is close to the single-fluid slurry nozzle 21 and used for rebounding the single-fluid slurry sprayed from the single-fluid slurry nozzle 21 to the outer wall of the single-fluid slurry nozzle 21 to form a rotational flow, so that the mixing in the first stage is completed. As a preferred embodiment, the single-slurry nozzle 21 is arranged coaxially with the mixing pipe 2, the outlet of the single-slurry nozzle 21 is positioned at the axle center of the mixing pipe 2, all the spiral pushing paddles 4 are coaxially connected, and the tail end of the rotating shaft of the spiral pushing paddles is arranged on the last material returning plate 22. The motor 3 is arranged at the right end part of the mixing pipe 2, and the rotating shaft of the motor forms a shaft seal with the front end surface of the mixing pipe 2, namely, the motor is arranged on a return plate 22 at the leftmost side in the figure 1. The area of the return plate 22 is larger than the area of the outlet of the single slurry nozzle 21 and smaller than half of the section of the mixing pipe 2, the return plate 22 is circular, the return plate 22 is fixedly connected with the inner wall of the mixing pipe 2 through a supporting arm, the return plate 22 is a flat plate or the receiving surface is concave, and the structure of the return plate can be shown in fig. 2 and 3.

The second material mixing section is sequentially provided with at least two groups of inclined plates 23 and baffle plates 24, the inclined plates 23 are arranged at the lower part, the baffle plates 24 are arranged at the upper part, so that the single-liquid slurry impacts the baffle plate 24 along the inclined plate 23 and then flows down and is finally sent into a grouting device through the discharge hole of the mixing pipe 2, as shown in fig. 1, the inclined plate 23 is positioned at the left side of the baffle 24, and is symmetrically arranged one below the other, the inclined plate 23 is positioned below, can be used for lifting slurry to enable the slurry to impact the baffle plate 24, in order to achieve the purpose, the inclination angle of the inclined plate 23 is 45-60 degrees, the height of the inclined plate 23 is the radius of the mixing pipe 2, the hanging length of the baffle plate 24 exceeds the highest point of the inclined plate 23, thereby guarantee that the material of raiseing can directly strike on plate 24, at last in order to strengthen the impact effect of thick liquid in this scheme, can also be equipped with a high-pressure pump, be connected the high-pressure pump with the feed end of compounding pipe 2, make it provide high pressure in order to strengthen the compounding effect. In the whole mixing process, the mixing flow direction of the slurry can be shown by referring to fig. 4, so that the slurry can be seen in the figure, and at least six sections of mixing processes are completed by the slurry in the mixing pipe 2, namely two times of spiral mixing in the mixing cavity M, two times of sputtering mixing between the material returning plate 22 and the single-slurry nozzle 21, and two times of impact mixing formed by the inclined plate 23 and the baffle plate 24, so that the mixing reaches the standard.

The foregoing is merely a preferred embodiment of the invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to limit the invention to other embodiments, and to various other combinations, modifications, and environments and may be modified within the scope of the inventive concept as described herein by the teachings or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A single slurry blending device for drilling and sealing holes is characterized by comprising a feeding tank (1), a mixing pipe (2), a motor (3), a spiral material pushing paddle (4) and a water inlet pipe (5);

the feeding tank (1) and the water inlet pipe (5) are communicated with the mixing pipe (2) and are used for feeding single-liquid slurry materials and water into the mixing pipe (2);

the water inlet pipe (5) is sequentially divided into a first mixing section and a second mixing section according to the feeding direction, at least two single-liquid-slurry nozzles (21) are axially arranged in the first mixing section, the single-liquid-slurry nozzles (21) face the single-liquid-slurry feeding direction, a section of mixing cavity (M) is formed at the rear side of each single-liquid-slurry nozzle (21), the spiral material pushing paddle (4) is installed in the mixing cavity (M), and the motor (3) is used for driving the spiral material pushing paddle (4);

the mixing pipe (2) is provided with a material returning plate (22) in front of each single-fluid slurry nozzle (21), the material returning plate (22) is close to the single-fluid slurry nozzles (21) and is used for rebounding the single-fluid slurry sprayed by the single-fluid slurry nozzles (21) to the outer walls of the single-fluid slurry nozzles (21) to form rotational flows;

the second material mixing section is sequentially provided with at least two groups of inclined plates (23) and baffles (24), the inclined plates (23) are arranged below and the baffles (24) are arranged above, so that single-liquid slurry impacts the baffles (24) along the inclined plates (23), flows down and is finally conveyed into the grouting device through a discharge hole of the material mixing pipe (2).

2. The single-fluid slurry mixing device for hole sealing of the drill hole is characterized in that the single-fluid slurry nozzle (21) is arranged coaxially with the mixing pipe (2), and the outlet of the single-fluid slurry nozzle (21) is positioned at the axis of the mixing pipe (2).

3. The single fluid slurry mixing device for sealing holes in boreholes as claimed in claim 2, characterized in that all the propeller propellers (4) are connected coaxially, the end of the rotating shaft of which is mounted on the last material return plate (22).

4. The single fluid slurry mixing device for sealing the borehole according to claim 3, wherein the area of the return plate (22) is larger than the area of the outlet of the single fluid slurry nozzle (21) and smaller than half of the cross section of the mixing pipe (2).

5. The single slurry mixing device for hole sealing of a borehole according to claim 4, wherein the return plate (22) is circular, the return plate (22) is fixedly connected with the inner wall of the mixing pipe (2) through a supporting arm, and the return plate (22) is a flat plate or the receiving surface is concave.

6. The single-fluid slurry mixing device for sealing the drilled hole according to claim 5, wherein the single-fluid slurry nozzle (21) is in a sharp-nose shape, so that the single-fluid slurry in the mixing cavity (M) is flushed out from the single-fluid slurry nozzle (21) under high pressure by the screw pushing paddle (4) and splashed and reflowed on the material returning plate (22).

7. The single slurry mixing device for hole sealing of the drill hole according to claim 1, wherein the inclination angle of the inclined plate (23) is 45-60 degrees, the height of the inclined plate (23) is the radius of the mixing pipe (2), and the hanging length of the baffle (24) exceeds the highest point of the inclined plate (23).

8. The single slurry blending device for hole sealing of the drill hole according to claim 1, wherein the mixing pipe (2) is sealed at the front end and serves as a discharge hole at the rear end, and the side wall of the front end of the mixing pipe (2) is communicated with the feeding tank (1) and the water inlet pipe (5).

9. The single fluid slurry mixing device for hole sealing of the drill hole as claimed in claim 7, wherein the motor (3) is installed on the front end face, and the rotating shaft and the front end face of the mixing pipe (2) form a shaft seal.

10. The single slurry mixing device for hole sealing of the drill hole according to claim 1, wherein the lower part of the feeding tank (1) is conical, the discharge hole (11) of the feeding tank (1) is fed by a screw pusher (12), and the water inlet pipe (5) is provided with a valve;

the device also comprises a control panel, wherein the control panel controls the rotating speed of the spiral pusher (12) and the opening degree of a valve of the water inlet pipe (5) according to the proportion of the mixed materials and water.