CN201901871U

CN201901871U - Perforated drain type water pressure grouting packer

Info

Publication number: CN201901871U
Application number: CN2010206225928U
Authority: CN
Inventors: 王立武; 刘靖; 刘权富; 才运涛; 姜笑阳; 孙灵会; 田野; 田伟
Original assignee: CHINA WATER NORTHEASTERN INVESTIGATION DESIGN AND RESEARCH Co Ltd
Current assignee: CHINA WATER NORTHEASTERN INVESTIGATION DESIGN AND RESEARCH Co Ltd
Priority date: 2010-11-24
Filing date: 2010-11-24
Publication date: 2011-07-20
Anticipated expiration: 2020-11-24

Abstract

The utility model relates to a perforated drain type water pressure grouting packer, belonging to foundation treatment equipment of geotechnical engineering. A grouting pipe and an upper packer body are in threaded connection with each other, the upper end of an expanded capsule is in threaded connection with the upper packer body, the lower end of the expanded capsule is in threaded connection with a lower joint of a packer body, a rubber stopper core pipe is in threaded connection with the upper packer body and is communicated with the grouting pipe and internally provided with a grout injection pipe, the upper packer body is in threaded connection with a filling pipe joint, a filing water pipe is sheathed with the filling pipe joint, a filing valve is below the filling pipe joint, the lower end of a filling valve rod is connected with a reset spring I, the upper end of the filling valve is in sliding connection with the filling valve, a drain valve seat is in threaded connection with the upper packer body and is internally provided with a drain valve, a reset spring II is sheathed in the middle of a drain valve rod, and the upper part of the drain valve rod is in the drain valve. The perforated drain type water pressure grouting packer has the advantages of being novel in structure, realizing free drainage when the perforated water level is smaller than 100m, leading the packer body to have no water head pressure and being smooth to screw.

Description

Water descharging type hydraulic pressure packer in the hole

Technical field

The utility model belongs to geotechnical engineering ground treating apparatus.

Background technology

Pouring into cementing material such as cement paste to ground by boring is the important process that ground is handled, and the boring segmentation will be isolated could forming big grouting pressure before the grouting, has reached 7～10Mpa at present, and packer is the crucial utensil of segmentation isolation of holing.Domestic common have mechanical extruding type, vapour-pressure type and light water pressure type.These three kinds exist respectively that isolation effect is poor, the cost height, certain potential safety hazard is arranged, defective such as the difficulty that discharges water.Mechanical extruding type: the axial length of plug is short, and the compliance to shape of hole wall during expansion is not good enough yet, so isolation effect is bad, easily produces the string slurry along hole wall and rock crevice, and isolation effect is poor, is difficult to satisfy the requirement of big pressure grouting and packer grouting from bottom to top; When vapour-pressure type was carried out big pressure grouting, the gas cylinder inflation was impossible, uses high air pump cost very high again, on-the-spotly used inconvenience, also had potential safety hazard during operation; The hydraulic type packer is a kind of desirable embolism that carries out big pressure grouting, but conventional hydraulic pressure plug can only realize that the aperture discharges water, and when water level in the hole during greater than 10m, capsule shrinks difficulty, the fault of jam and disconnected plug often occurs.

Summary of the invention

The utility model provides water descharging type hydraulic pressure packer in a kind of hole, the isolation effect that present packer exists is poor to solve, the cost height, certain potential safety hazard is arranged, difficult problem discharges water.

The technical scheme that the utility model is taked is: grout pipe is threaded with body beyond the Great Wall, expansion capsule upper end is threaded with body beyond the Great Wall, the lower end is threaded with the cock body lower contact, plug core pipe is threaded with body beyond the Great Wall, and with grout pipe UNICOM, in the plug core pipe Grout-jetting pipe is arranged, it is characterized in that: beyond the Great Wall body with fill union and be threaded, fill water pipe and fill the union socket, fill valve and be positioned at the below of filling union, filling the valve rod lower end is connected with back-moving spring one, the upper end with fill valve and be slidingly connected, discharge valve seat is threaded with body beyond the Great Wall, there is Draw off valve its inside, and valve rod middle part socket back-moving spring two discharges water, top is arranged in Draw off valve.

Advantage of the present utility model is novel structure, reality in the hole water level make cock body not have head pressure less than can in the hole, freely discharging water in the 100m, it is smooth and easy to play plug.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the utility model structural representation of body beyond the Great Wall.

The specific embodiment

Grout pipe 1 is threaded with body 4 beyond the Great Wall, expansion capsule 5 upper ends are threaded with body beyond the Great Wall, the lower end is threaded with cock body lower contact 6, plug core pipe 7 is threaded with body beyond the Great Wall, and with grout pipe UNICOM, in the plug core pipe Grout-jetting pipe 8 is arranged, beyond the Great Wall body with fill union 3 and be threaded, fill water pipe 2 and fill the union socket, fill valve 401 and be positioned at the below of filling union, filling valve rod 402 lower ends is connected with back-moving spring 1, the upper end with fill valve and be slidingly connected, discharge valve seat 404 is threaded with body beyond the Great Wall, there is Draw off valve 405 its inside, and valve rod 406 middle part socket back-moving springs 2 407 discharge water, top is arranged in Draw off valve.

Arrive when filling valve by filling water pipe when filling water, a part of water lifts via the duct valve rod that will discharge water, and closes Draw off valve; When filling pressure and reach 2Mpa, under the pressure of water, promote to fill valve rod, to open and fill valve, water enters the expansion capsule and fills until pressure and reach 6-8Mpa, can be in the milk; After grouting finishes, opening the ground relief valve, when pressure during less than 1.5Mpa, back-moving spring two valve rod that promotes to discharge water falls, and opens Draw off valve, in the capsule that expands this moment to fill water external via the discharging valve draw-off plug, making the pressure in the expansion capsule is zero, and capsule can fully reset.

Claims

1. water descharging type hydraulic pressure packer in the hole, grout pipe is threaded with body beyond the Great Wall, expansion capsule upper end is threaded with body beyond the Great Wall, the lower end is threaded with the cock body lower contact, plug core pipe is threaded with body beyond the Great Wall, and with grout pipe UNICOM, in the plug core pipe Grout-jetting pipe is arranged, it is characterized in that: beyond the Great Wall body with fill union and be threaded, fill water pipe and fill the union socket, fill valve and be positioned at the below of filling union, filling the valve rod lower end is connected with back-moving spring one, the upper end with fill valve and be slidingly connected, discharge valve seat is threaded with body beyond the Great Wall, there is Draw off valve its inside, and valve rod middle part socket back-moving spring two discharges water, top is arranged in Draw off valve.