Flat direct-connection concrete ultrahigh pressure delivery pump

Abstract

The invention relates to the technical field of concrete pumping, in particular to a flat direct-connection concrete ultrahigh pressure delivery pump which comprises two pumping cylinders and a conversion box installed at the front ends of the two pumping cylinders, and the conversion box is provided with a first cylinder feeding pipe and a second cylinder feeding pipe which are connected with one pumping cylinder, and is also provided with a second cylinder discharging pipe and a first cylinder discharging pipe connected with the other pumping cylinder. The moving time of a plug can be well controlled through a driving oil cylinder in linkage with an elastic oil storage ring, a channel is opened only when the pressure in the first cylinder discharging pipe or the second cylinder discharging pipe reaches, the conveying process is stable, and large impact cannot be caused to a hydraulic system. In addition, the linkage design is carried out on material discharging and material sucking of the first cylinder and material sucking and discharging of the second cylinder, it is guaranteed that the material sucking and discharging process is smooth and orderly, buffering is formed through washboarding of a deformation part, and when stones are pressed and enter a buffering part formed after deformation of the deformation part, it is guaranteed that a valve is closed tightly.

Description

technical field [0001] The invention relates to the technical field of concrete pumping, in particular to a flat direct-connected concrete ultra-high pressure delivery pump. Background technique [0002] Concrete delivery pumps can be divided into: extrusion concrete pumps and hydraulic piston concrete pumps according to their working principles. Extrusion concrete pumps are mainly composed of hoppers, drum pumps, driving devices, vacuum systems and delivery pipes. Simple, low cost, easy maintenance and stable work, due to the small delivery volume and pumping concrete pressure, and short delivery distance, it is rarely used at present. The hydraulic piston concrete pump is mainly composed of a hopper, a concrete cylinder, a distribution valve, a hydraulic control system and The two concrete cylinders are generally flat and arranged side by side, and are directly connected together. The distribution valve is opened and closed alternately through the hydraulic control system....

AI Technical Summary

Problems solved by technology

[0003] Existing conveying cylinders generally use spectacle plates to switch the conveying state of the cylinder body, but the spectacle plates are placed at the front end of the cylinder body, and the cylinder mouth is opened or closed by shearing movement, which is prone to stones in the plate body and concrete Collision will cause deformation of the plate body over time and cause poor sealing. However, the existing one-way valve structure has a relatively small opening and high resistance, which will reduce the pumping speed, and when the one-way valve is closed, large stones in the concrete will be stuck. If the seal is not tight, the sealing effect cannot be achieved, so that when the material is sucked and pumped, the input and output pipes will affect each other and affect the pumping effect.

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