阅读说明：本技术 一种自旋转多重混合的双液注浆孔口混合装置 (Self-rotating multiple-mixing double-liquid grouting orifice mixing device ) 是由 潘东江 周建军 孙振川 秦银平 赵海雷 杨延栋 杨振兴 王利明 郭璐 秦银萍 翟 于 2019-07-31 设计创作，主要内容包括：本发明涉及隧道及地下空间等岩土双液注浆工程领域,特别是一种自旋转多重混合的双液注浆孔口混合装置,旨在解决现有技术中双液注浆混合不均匀的问题。本发明包括三通状的混合仓,混合仓的两侧各设有物料进口,混合仓的底部设有螺旋流道出料管,螺旋流道出料管内设有搅拌机构；物料进口处安装物料进口机构,自转喷头的包括帽状回转体,自其上盲孔的内壁起外部延伸安装螺纹状的导料板,导料板上沿螺纹边缘方向设计圆弧折型喷嘴。优点在于：达到充分混合浆材的目的,完成孔口混合注浆作业,在我国诸多IV级和V级围岩岩土双液注浆工程中具有重要的实用价值和广阔的应用前景。(The invention relates to the field of rock soil double-liquid grouting engineering such as tunnels and underground spaces, in particular to a self-rotating multiple-mixing double-liquid grouting orifice mixing device, and aims to solve the problem of uneven double-liquid grouting mixing in the prior art. The mixing device comprises a tee-shaped mixing bin, wherein material inlets are respectively formed in two sides of the mixing bin, a spiral flow channel discharging pipe is arranged at the bottom of the mixing bin, and a stirring mechanism is arranged in the spiral flow channel discharging pipe; the material inlet mechanism is arranged at the material inlet, the autorotation nozzle comprises a cap-shaped revolving body, a threaded guide plate extends from the outer part of the inner wall of the blind hole on the autorotation nozzle, and an arc folding nozzle is arranged on the guide plate along the direction of the thread edge. Has the advantages that: the purpose of fully mixing the slurry materials is achieved, orifice mixing grouting operation is completed, and the method has important practical value and wide application prospect in a plurality of IV-level and V-level surrounding rock and soil double-liquid grouting projects in China.)

1. The utility model provides a biliquid slip casting mouth mixing arrangement of autogyration multiple mixture which characterized in that: the device comprises a tee-joint-shaped mixing bin (1), wherein material inlets are respectively formed in two sides of the mixing bin (1), a spiral flow channel discharging pipe (6) is arranged at the bottom of the mixing bin (1), and a stirring mechanism is arranged in the spiral flow channel discharging pipe (6);

a material inlet mechanism is arranged at the material inlet, the material inlet mechanism comprises a slurry conveying pipe arranged outside the mixing bin (1) and a self-rotating spray head extending into the mixing bin (1), the outer ring of a sealing bearing group (7) is arranged on the inner wall of the slurry conveying pipe, the inner ring of the sealing bearing group (7) is sleeved in the self-rotating spray head, lip-shaped sealing rings (10) and lantern rings (11) are arranged on two sides of the sealing bearing to form a sealing space in the bearing, and the slurry conveying pipe is further arranged outside the bearing;

the autorotation nozzle comprises a cap-shaped revolving body, a blind hole is formed in the cap-shaped revolving body, a threaded guide plate extends from the outer part of the inner wall of the blind hole, an arc folding nozzle (8) is arranged on the guide plate along the direction of the edge of a thread, and the rotating directions of the guide plates of the two material inlets are opposite.

2. The dual fluid injection port mixing device of self-rotating multiple mixing as claimed in claim 1, wherein: the stirring mechanism comprises a spiral blade (12) fixed on a spiral flow channel discharge pipe (6).

3. The dual fluid injection port mixing device of self-rotating multiple mixing as claimed in claim 1, wherein: one side of the lip-shaped sealing ring is adjacent to the autorotation spray head, and the other side of the lip-shaped sealing ring is adjacent to the mixing bin (1) or the material inlet.

4. The dual fluid injection port mixing device of self-rotating multiple mixing as claimed in claim 1, wherein: in the cross section direction of the material guide plate, one end of each of the two ends of the material guide plate is communicated with the inside of the revolving body, and the other end of each of the two ends of the material guide plate is communicated with the mixing bin (1).

5. The dual fluid injection port mixing device of self-rotating multiple mixing as claimed in claim 4, wherein: the top of the cap-shaped revolving body is provided with a blade (9).

6. The dual fluid injection port mixing device of self-rotating multiple mixing as claimed in claim 1, wherein: the rotating diameter of the arc folding nozzle (8) is 20-50mm smaller than the inner diameter of the mixing bin (1).

7. The dual fluid injection port mixing device of self-rotating multiple mixing as claimed in claim 1, wherein: the rotating diameter of the blades (9) is 20-50mm smaller than the inner diameter of the mixing bin (1).

8. The dual fluid injection port mixing device of self-rotating multiple mixing as claimed in claim 1, wherein: the inner diameter of the mixing bin (1) is 20-50mm larger than the outer diameter of the slurry conveying pipes at two sides.

9. The dual fluid injection port mixing device of self-rotating multiple mixing as claimed in claim 9, wherein: the spiral diameter of the spiral blade (12) is 25-60mm, the pitch is 25-60mm, and the thickness of the sheet is 2-5 mm.

10. The dual fluid injection port mixing device of self-rotating multiple mixing as claimed in claim 1, wherein: the spiral blade (12) is replaced by a power source with the bottom connected with and driving the spiral blade to rotate, and a sealing element is installed on the power source to prevent seepage.

Technical Field

The invention relates to the field of rock soil double-liquid grouting engineering such as tunnels and underground spaces, in particular to a self-rotating multiple-mixing double-liquid grouting orifice mixing device.

Background

At the present stage, the development and utilization of tunnels and underground spaces are more and more emphasized in all countries in the world, but part of surrounding rocks (such as IV-level and V-level surrounding rocks) are poor in integrity, broken and soft, poor in engineering stability and prone to collapse accidents, and serious casualties and major economic losses of construction operators are caused.

Aiming at the difficult problem of controlling the stability of the broken surrounding rock, the grouting modification is utilized to break the surrounding rock, the surrounding rock cracks are blocked, the whole structure of the surrounding rock is formed, the water immersion of cracks and the softening of the surrounding rock are prevented, the mechanical property of the surrounding rock is strengthened, the method is an effective technical way for developing the self bearing capacity of the surrounding rock, and is also a key means for preventing the anchored rock from being degraded when meeting water. Two-fluid grouting such as cement-water glass, AB material polymer slurry and the like is a method which is adopted by engineering technicians mostly. In the field of two-fluid grouting, the commonly adopted three-way mixer has a problem: the mixing was not uniform.

In the published chinese patent literature, the CN101892847A patent designs an elastic rubber sleeve structure to uniformly mix the mixed liquid of water glass and cement slurry; the CN102900073A patent designs a special core tube, and the mixing work of the water glass and the cement paste can be carried out only by ensuring that the pressure of the water glass is greater than the elastic force of the top spring; the CN103334436A patent realizes the full mixing of the two liquids by adding a slurry mixer, a slurry stirrer, an injection injector and a uniform slurry outlet. The CN107551843A patent has designed a plurality of business turn over thick liquid mouths of two kinds of thick liquids simultaneously, has realized the reposition of redundant personnel of thick liquid material, lets two kinds of thick liquids carry out the three-dimensional mixture of a plurality of horizons.

To sum up, above-mentioned patent provides respective solution for solving biliquid slip casting orifice mixing problem, nevertheless only relies on reposition of redundant personnel, whirl effect, and mixing efficiency is lower. In the actual production, the problems of low working efficiency and poor stirring effect still face.

Disclosure of Invention

The invention aims to solve the problems of low working efficiency and poor stirring effect in the prior art.

The specific scheme of the invention is as follows:

designing a double-liquid grouting opening mixing device for self-rotation multiple mixing, which comprises a three-way mixing bin, wherein material inlets are respectively formed in two sides of the mixing bin, a spiral flow channel discharging pipe is arranged at the bottom of the mixing bin, and a stirring mechanism is arranged in the spiral flow channel discharging pipe; the material inlet is provided with a material inlet mechanism, the material inlet mechanism comprises a slurry conveying pipe arranged outside the mixing bin and a self-rotating spray head extending into the mixing bin, the outer ring of a sealing bearing group is arranged on the inner wall of the slurry conveying pipe, the inner ring of the sealing bearing group is sleeved in the self-rotating spray head, and the two sides of the sealing bearing are provided with a lip-shaped sealing ring and a lantern ring so as to form a sealing space in the bearing; the slurry conveying pipe is further arranged outside the bearing, the autorotation nozzle comprises a cap-shaped revolving body, a blind hole is formed in the cap-shaped revolving body, a threaded material guide plate extends from the outer part of the inner wall of the blind hole, and an arc folding type nozzle is arranged on the material guide plate along the direction of the edge of the thread.

Drawings

FIG. 1 is a schematic cross-sectional view of a self-rotating multiple-mixing dual fluid injection orifice mixing device of the present invention;

fig. 2 is a partially enlarged view of the sealed bearing of the present invention.

In the figure: 1. mixing bin, blade self-rotating spray head of liquid 2 and A, blade self-rotating spray head of liquid 3 and B, liquid 4 and A slurry conveying pipe, liquid 5 and B slurry conveying pipe, spiral flow channel discharge pipe, 7, sealing bearing group, 8, circular arc folding nozzle, 9, blade, 10, lip-shaped sealing ring, 11, lantern ring, 12 and helical blade.

In a specific implementation, the stirring mechanism comprises a helical blade fixed on a discharge pipe of the helical flow passage. One side of the lip-shaped sealing ring is adjacent to the autorotation spray head, and the other side of the lip-shaped sealing ring is adjacent to the mixing bin or the material inlet. And in the cross section direction of the material guide plate, one end of each of two ends of the material guide plate is communicated with the inside of the revolving body, and the other end of each of the two ends of the material guide plate is communicated with the mixing bin. The top of the cap-shaped revolving body is provided with blades, and the rotating directions of the material guide plates of the two material inlets are opposite.

Or the spiral blade is replaced by a power source with the bottom connected with and driving the spiral blade to rotate, and a sealing element is installed on the power source to prevent seepage.