Sand cylinder for sand blasting machine

Abstract

The invention discloses a sand cylinder for a sand blasting machine. The sand cylinder for the sand blasting machine comprises a first cylinder body, a second cylinder body and a gas inflow channel; the first cylinder body is provided with a first feeding channel and a first discharging channel, and the second cylinder body is provided with a second feeding channel and a second discharging channel; the gas inflow channel comprises a first gas inflow pipe communicating with the first cylinder body, a second gas inflow pipe communicating with the second cylinder body and a main gas inflow pipe,and the main gas inflow pipe communicates with the first gas inflow pipe and the second gas inflow pipe through a three-way reversing valve; when the main gas inflow pipe communicates with the first gas inflow pipe, the first discharging channel sprays materials, and the second feeding channel feeds materials; and when the main gas inflow pipe communicates with the second gas inflow pipe, the second discharging channel sprays materials, and the first feeding channel feeds materials to achieve that when one cylinder body performs material spraying, the other cylinder body performs material filling. By means of the above arrangement, the material spraying process and the material filling process are conducted through the two cylinder bodies at the same time, when abrasive materials in one cylinder body are about to be sprayed, the processes conducted through the two cylinder bodies are interchanged, and therefore uninterrupted circulation of material spraying and material filling is achieved.

Description

technical field [0001] The invention belongs to an assembly component of a sandblasting machine, and is especially used for a sand cylinder of the sandblasting machine. Background technique [0002] The sand blasting machine is a device that uses compressed air as the driving force and the negative pressure formed in the spray gun through the high-speed movement of the air flow to suck the abrasive into the spray gun through the sand conveying pipe and eject it through the nozzle, and spray it onto the surface to be processed. Due to the impact and cutting effect of the abrasive on the surface of the workpiece, after being sprayed on the workpiece, the surface of the workpiece can obtain a certain degree of cleanliness and different roughness, so that the mechanical properties of the workpiece surface are improved, and the fatigue resistance of the workpiece is improved. It increases the adhesion between it and the coating, prolongs the durability of the coating film, is als...

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Problems solved by technology

[0003] However, there are many problems in the existing sandblasting machines. Among them, the abrasive reserves of the sand blasting machine are limited. When it is applied to a larger workpiece, it needs to be stopped several times to add abrasives in the sand cylinder to complete the work process. And this also greatly affects the work efficiency

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