A kind of exhaust type pile injector

Abstract

The invention relates to an exhaust type pile filling device. The exhaust type pile filling device comprises a filling device shell, an air suction valve and a sludge discharge valve, wherein the airsuction valve and the sludge discharge valve are arranged in the filling device shell; the interior of the filling device shell is rotatably connected to a rotary driving shaft through two groups of hollow rotary supporting discs; the sludge discharge valve comprises a sludge guide barrel which is connected to a supporting sleeve; the sludge discharge valve also comprises a plurality of sludge discharge sheets; sludge discharge openings are formed in the sludge discharge sheets; the sludge discharge sheets are slantwise arranged relative to the axis of the rotary driving shaft; the air suctionvalve comprises an air suction barrel; an air suction air bag is arranged in the air suction barrel; an opening is formed in the end part of a concrete filling pipe and located in a position betweenthe sludge guide barrel and the air suction barrel of the inner wall of the filling device shell; the sludge discharge valve with the structure can stir concrete through the rotation of the rotary driving shaft; the arranged sludge discharge sheets can extrude the concrete to exhaust; meanwhile after extrusion is completed, the concrete can be discharged into the next layer through an arc-shaped opening; and the exhaust and the high-density extrusion are realized synchronously.

Description

technical field [0001] The invention relates to an exhaust type pile injector, which belongs to the field of cast-in-situ piles. Background technique [0002] Cast-in-situ piles are a technique for forming piles on soft soil surfaces that are not suitable for piling. The main technical difficulty is whether air holes will be generated during the process of pouring piles, because the generation of air holes will seriously affect the strength of piles. At the same time, the concrete in the piles Density is also very important; therefore, during the pile pouring process, the inside of the pile is generally stirred by a mixer step by step to discharge mud, while ensuring the density of the concrete, but the steps of step-by-step pouring and stirring are prone to partial solidification of the concrete As a result, the concrete poured in the later period cannot be fully mixed with the concrete poured in before, resulting in concrete stratification affecting the structural integrit...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to overcome the technical problem of poor integration of distributed grouting and mud discharge in the prior art, and to provide a venting type pile injector

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