Automatic additive adding device for mining concrete wet spraying

Abstract

The invention discloses an automatic additive adding device for mining concrete wet spraying. The automatic additive adding device comprises a concrete injection pipe, and a wet spraying machine nozzle is arranged at the front end of the concrete injection pipe. The adding device is provided with an adding trough communicated with a pressure feeding machine, the pressure feeding machine is communicated with an adding pump, the adding pump is communicated with the concrete injection pipe through a communication pipe, and the communication point of the communication pipe and the concrete injection pipe is located behind the wet spraying machine nozzle. An additive is put into the adding trough, the flow speed of concrete can be automatically sensed through a corresponding sensor, a flow speed signal is transmitted to a dosage controller, the dosage controller transmits a dosage adding signal to a dosage regulator, the dosage regulator regulates the dosage of the additive added from the adding trough, the additive is fed through the pressure feeding machine in a pressing mode and enters the wet spraying machine nozzle from the additive pump, and thus the dosage of the additive can be effectively and automatically regulated; in addition, pipe jamming can be effectively monitored, and the working effect and safety are greatly improved.

Description

technical field [0001] The invention relates to an additive adding device, in particular to an automatic additive adding device for mine concrete wet spraying. Background technique [0002] Wet concrete spraying machine is a kind of construction equipment widely used in construction engineering fields such as wells, tunnels, culverts, and water conservancy. In recent years, concrete wet spraying technology has been widely used in various construction fields because of its simple process and low cost. During the concrete spraying operation of the concrete wet spraying machine, various types of additives need to be added. Although the amount of additives is small, it has a great influence on the spraying effect of concrete. If the ratio of additives is inappropriate, it will cause pipe blockage, increase the amount of concrete rebound, reduce the efficiency of spraying operations, and waste the utilization rate of concrete. [0003] In the existing technology, there are gen...

AI Technical Summary

Problems solved by technology

Manual means that the operator manually controls the addition of the additive pump based on experience. The amount of additives added in this method depends on the experience of the workers, which is unreliable and wastes labor.

Another type of automatic adding method has low automaticity, and there will be pulses and other phenomena in the concrete conveying process, and the flow rate is not constant. The existing automatic adding method cannot automatically adjust the amount of additives according to the flow rate, and the effect is not good not ideal

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