Descend control device

Abstract

The invention relates to a descend control device. The descend control device comprises a descend control device body, wherein the descend control device body is formed by communicating a material feeding pipe and a material discharging pipe which are abreast placed, a cleaning material flexible door is arranged at the bottom end of the material feeding pipe, a slow flow opening is formed in the middle portion of the material feeding pipe, connecting flanges are all fixed on the bottom portion of the material discharging pipe and the top portion of the material feeding pipe, the connecting flanges are used for slow flow effect in the middle portion of an articulated chute, the connecting flanges are arranged at the top portion of the material feeding pipe, a slipstream opening is formed at the bottom portion of the material discharging pipe, the slipstream opening is used at a material discharging opening of the articulated chute, an observation flexible door is further arranged on the material feeding pipe, the observation flexible door can be favorable to adjusting and observing flow speed of the materials and further can timely clean an inner chamber, and floppy concretes are filled at a buffering portion between the cleaning material flexible door and the slow flow opening. On one hand, the descend control device can prevent free falling body of the concretes from producing isolation of frameworks and the materials, and on the other hand avoid severe damages of pipe walls and a belt conveyor below the pipe caused by a high fall.

Description

technical field [0001] The invention relates to a buffer device, in particular to a buffer used for vertical transportation of concrete. Background technique [0002] In the process of water conservancy and building construction, the vertical transportation of concrete is often involved due to terrain factors. The vertical transportation from bottom to top can be solved by pumping or tower cranes, and no aggregate will be generated during the transportation of concrete. Separation, when transporting vertically from top to bottom, vacuum chute, tower crane, cable crane and other devices are usually used, but the above devices have some shortcomings: vacuum chute generally can only work on small slopes, and for some high and steep, vertical Vertical transportation with an angle of 45°-90° or more not only requires a large investment and maintenance workload, but also has a high cost of transportation, which is likely to cause separation of aggregates and serious quality proble...

AI Technical Summary

Problems solved by technology

[0002] In the process of water conservancy and building construction, the vertical transportation of concrete is often involved due to terrain factors. The vertical transportation from bottom to top can be solved by pumping or tower cranes, and no aggregate will be generated during the transportation of concrete. Separation, when transporting vertically from top to bottom, vacuum chute, tower crane, cable crane and other devices are usually used, but the above devices have some shortcomings: vacuum chute generally can only work on small slopes, and for some high and steep, vertical Vertical transportation with an angle of 45°-90° or more not only requires a large investment and maintenance workload, but also has a high cost of transportation, which is likely to cause separation of aggregates and serious quality problems.

[0003] Some reservoirs are built in high mountains and valleys. Due to the limitation of site and height difference, transfer stations are often built on the mountains on both sides to reduce the vertical drop. The construction of transfer stations increases the construction process and cost, and also prolongs the construction period. Shaft or inclined shaft chute or chute is transported from top to bottom. If no measures are taken, the concrete aggregate will be separated, which will directly and seriously affect the quality of concrete pouring and the construction period.

[0004] Chinese patent application number 201120086496.0 provides a buffer device for vertical transportation of concrete, which uses a rotating guide vane and a "human"-shaped tube, and the concrete is directly dropped on the rotating guide vane for buffering, which not only requires high strength of the rotating guide vane High, and the slow down device used is easy to cause pipe blockage, the overall can not fundamentally solve the impact on the pipeline, the life of the buffer device is greatly reduced

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