A hard aggregate concrete pumping equipment

Abstract

The invention discloses hard aggregate concrete pumping equipment, and relates to the field of building equipment. The hard aggregate concrete pumping equipment comprises a feeding device and a pumping device, the feeding device comprises a feeding hopper, the lower portion of the hopper is connected with a sliding valve on the pumping device through a Y-shaped pipe, the sliding valve is connectedwith one end of a conveying cylinder, the other end of the conveying cylinder is provided with a water tank, the water tank is connected with a main oil cylinder, the oil cylinder is provided with apush rod which can move back and forth in the water tank and the conveying cylinder, and a concrete piston is arranged at the front end of the push rod; and the concrete piston comprises a front plugbody, a middle plug body and a rear plug body, the rear plug body is rigidly connected with the push rod, a bolt is arranged on the rear plug body to fix the middle plug body and the rear plug body, asealing ring is arranged between the middle plug body and the rear plug body, a scraping ring is further arranged between the front plug body and the middle plug body, and a dustproof ring is furtherarranged on the rear plug body. The hard aggregate concrete pumping equipment has the technical effects that the hard aggregate concrete is conveyed, and the problems of wear aging, damage and the like of the concrete piston and a concrete conveying pipe are prevented.

Description

technical field [0001] The invention relates to the field of construction equipment, in particular to a hard aggregate concrete pumping equipment. Background technique [0002] Concrete refers to the artificial stone made of cement as the main cementitious material, mixed with water, sand, stones, chemical admixtures and mineral admixtures when necessary, mixed in appropriate proportions, uniformly stirred, compacted and cured. Concrete is mainly divided into two stages and states: the plastic state before setting and hardening, that is, fresh concrete or concrete mixture; the hard state after hardening, that is, hardened concrete or concrete. The strength grade of concrete is divided by the standard value of cubic compressive strength. The strength grade of ordinary concrete in China is divided into 14 grades: C15, C20, C25, C30, C35, C40, C45, C50, C55, C60, C65, C70, C75 and C80 . [0003] In concrete, sand and stone act as the skeleton, which is called aggregate; cemen...

AI Technical Summary

Problems solved by technology

Crushed stones have edges and corners, rough surface, and good bonding with cement, while pebbles are mostly round, with smooth surface, and poor bonding with cement. When the amount of cement and water are the same, the concrete mixed with crushed stones will Poor fluidity, but high strength, while pebble-mixed concrete has good fluidity, but low strength

[0006] Therefore, when high-strength concrete is required, hard aggregates with edges and corners and firm texture are often used as the basic component of concrete. However, concrete using hard aggregates as a material poses a severe test for transportation and mixing. Traditional The equipment is easily shortened in life during pumping and requires frequent maintenance

Images