Double mud pump structure of rotating pump hole-forming pile machine

Abstract

The invention provides a double mud pump structure of a rotating pump hole-forming pile machine. The mud pump structure is characterized in that: each one-way mud pump valve is provided with a valve body comprising a main pipeline; a branch pipeline connection in the middle of the main pipeline is connected with a branch pipeline; an upper end of the main pipeline is an outlet and connected with a mud pipe of the rotating pump hole-forming pile machine; a lower end of the main pipeline is an inlet and connected with a soil suction pipeline of the rotating pump hole-forming pile machine; an end portion of the branch pipeline is connected with a soil suction pressure pump of the rotating pump hole-forming pile machine; an inlet valve block is connected to an end portion of a piston rod of an oil cylinder and the piston rod drives the inlet valve block so as to close or open an inlet section; an outlet valve block is connected to an end portion of a piston rod of an oil cylinder and the piston rod drives the outlet valve block so as to close or open N outlet section; two one-way mud pumps are arranged, and the oil cylinder connected with the inlet valve block and the oil cylinder connected with the outlet valve block both are connected with a hydraulic control system. The one-way mud pumps of the rotating pump hole-forming pile machine can be effectively closed, and the efficiency of mud suction is improved.

Description

technical field [0001] The invention belongs to the field of construction machinery, in particular to a pile driver for foundation drilling. Background technique [0002] The patent No. 201110116411.3 provides a rotary pump hole-forming pile machine, which has a one-way mud pump valve 7 ", such as figure 1 As shown, the valve body of the one-way mud pump valve 7" has two one-way valve plates 73" and 74" hinged in the valve body, and the inlet 71" of the one-way mud pump valve 7" is converged and connected with the soil suction pipe 6, The outlet 72 "of the one-way mud pump valve 7" is connected with the mud pipe 60, and a hydraulic interface 75" of the one-way mud pump valve 7" is connected with the diamond drill high-pressure hydraulic power soil suction pressure pump 2. [0003] The gold steel drill high pressure hydraulic power soil suction pressure pump 2 preferably uses the oil cylinder that can be called the soil suction cylinder, and the reciprocating motion of the s...

AI Technical Summary

Problems solved by technology

[0008] In addition, when the pressure of the subsurface mud suddenly increases, the normal pressure is not enough to close the one-way valve 73", and the situation that the one-way valve 73" cannot be closed will occur at this time.

[0009] The rotary pump pile machine with the above structure has only one one-way mud pump valve 7", because its action is to pump mud into the one-way mud pump valve 7", and press the mud out of the one-way mud pump valve 7", so the mud is separated by There are gaps in the whole process when it is pressed to the mud pipe and then transported to the ground, which affects the efficiency of mud pumping

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