CN2050879U

CN2050879U - Pressing air countercirculatory sludging device

Info

Publication number: CN2050879U
Application number: CN 89202484
Authority: CN
Inventors: 蔡传科; 张国恩
Original assignee: LIANGHUAI COAL MINE BUILDING SPECIAL SHAFT SINKING CORP
Current assignee: LIANGHUAI COAL MINE BUILDING SPECIAL SHAFT SINKING CORP
Priority date: 1989-03-11
Filing date: 1989-03-11
Publication date: 1990-01-10

Abstract

The utility model relates to a press air reverse cycle sludge removing device. The inside of a hollow discharge pipe (1) is provided with a press air pipe (3), the end of the press air pipe (3) is connected with a mixer (2), compressed-air is injected the mixer (2) through the press air pipe (3), and the internal and external pressure difference of the discharge pipe is used to speed up the lifting speed of the sludge, which can increase the production efficiency of the cleaning of foundation pits or the bottoms of wells and carry the sludge and dinas blocks of the bottom of the well out above the ground.

Description

Pressing air countercirculatory sludging device

The utility model relates to the calm the anger mud exhauster of anti-circulation theory design of a kind of application, and it removes sandstone or earth in deep-well or the deep foundation by suction or pressurization.

Deep-well or deep foundation cleaning substrate excavation face are prepared in the filling process, and especially cleaning basis in putting the narrow and small place of reinforcing cage well is a more complicated, and traditional way is to adopt the slush pump direct circulation.Chinese patent application 85103251 proposes a kind of device that promotes with winch, pulley.The former hoisting velocity is slower, and the sandstone of shaft bottom or substrate can not in time rise to ground, has increased the protection expense and has got rid of sandstone quantity.The latter needs more plant equipment, and the spoil disposal degree of depth is limited.

The purpose of this utility model is to propose a kind of anti-circulation mud exhauster of calming the anger, and it can shorten the clear hole time, accelerates the mud hoisting velocity, guarantees the concrete casting quality, reduces borehole wall open-assembly time.

Utility model is achieved in that the anti-circulation mud exhauster of calming the anger, comprise discharge pipe, blender, air pipe, steam vent, air pipe is positioned in the hollow discharge pipe, the end of air pipe connects blender, blender is end face greater than the cylindrical of air pipe or other shape that tip is tapered, steam vent is located at the blender end face, the center of the center of its center of circle on line and blender end face coincides, and equidistantly is arranged in the blender end face.The number that is provided with of steam vent is 3～4 to decide according to leaving area divided by the merchant who presses the wind area.

The utility model is used in the clear hole of secondary of castinplace pile, can in 20～30 minutes, finishes all clear hole process, promote the degree of depth and reach 40～60 meters.The stone that drives the 30mm diameter is continued to use traditional slush pump to ground, the clear hole time needs a few hours, and some spoir such as mud etc. often can't promote.Can replace the interior useless sandstone of well with the concrete of having modulated as requested simultaneously.

Fig. 1: the clear hole of the anti-circulation fundamental diagram of calming the anger.

Fig. 2: the anti-circulation mud exhauster front view of calming the anger.

Fig. 3: the anti-circulation mud exhauster vertical view of calming the anger.

Now further narrate the utility model in conjunction with the accompanying drawings.

Referring to Fig. 1, discharge pipe 1 is circular hollow tube, the bottom surface is communicated with the borehole wall, can change the degree of depth with the construction of shaft bottom or deep foundation, air pipe 3 is positioned in the hollow discharge pipe 1, and the end of air pipe 3 connects blender 2, and compressed air hose 3 is closed, the liquid level of pit shaft and discharge pipe 1 is contour, and proportion equates.Compressed air hose 3 is opened, after remaining mud, water, sand liquid level evenly mix in blender 2 and the borehole wall, owing to injected a large amount of compressed air in the mixed liquor, its proportion is less than the proportion of remaining mud, water, sand liquid level in the borehole wall, so mixed liquor rise to expand, at this moment arrange mud tube 1 wall and form pressure differential between inside and outside, improved the mixed liquor rate of climb, drive mud, water, sandstone rising, disappear until plasma discharge tube wall external and internal pressure difference.Blender 2 immerses the height H that is provided with of level h in hollow discharge pipes 1 tube wall, discharge pipe 1, and the buried depth of blender 2 is with lower part discharge pipe tail pipe length l w, on the ground through the mud balance r in the clear hole of preparation secondary of artificial modulation _t=1.3, the proportion r of remaining mud, soil, sand in the borehole wall _h

Referring to Fig. 2, compressed air is by air pipe 3 injecting mixers 2, and the end face of blender 2 is established a plurality of steam vents 4.

Referring to Fig. 3, the inwall of discharge pipe 1 is established air pipe 3, and blender 2, the circle center line connecting 5 of a plurality of steam vents 4 all form concentric circles, leaving area S with discharge pipe 1 ₁, the diameter d of steam vent 4 _k, length L _h, exhaust hole count n _k, compressed air enters area S ₂, the air pipe diameter d _g, mixer length L _h

Embodiment of the present utility model: adopt compressed air pressure 7kg/Cm ², per minute capacity 0.9M ³/ minute, 207 millimeters of discharge pipe diameter phi, the diameter 18mm of air pipe 3, mixer length L _h296mm, the diameter 4mm of steam vent 4, S ₁Equal 254mm ², S ₂Equal 75.4mm ², S ₁/ S ₂=254/75.4=3.37.Steam vent number 6.

Claims

1, a kind of anti-circulation mud exhauster of calming the anger, comprise discharge pipe 1, blender 2, air pipe 3, steam vent 4, feature of the present utility model is: air pipe 3 is positioned in the hollow discharge pipe 1, the end of air pipe 3 connects blender 2, and blender 2 is end face greater than the cylindrical of air pipe 2 or other shape that tip is tapered, and steam vent 4 is located at blender 2 end faces, the center of the center of its center of circle on line and blender 2 end faces coincides, and equidistantly is arranged in blender 2 end faces;

2, according to the described anti-circulation mud exhauster of calming the anger of claim 1, it is characterized in that: steam vent 4 number is set according to leaving area S ₁Divided by air pipe area S ₂The merchant equal 3～4 and decide.