Sand blasting device for inner wall of small diameter pipe fittings

Abstract

The invention discloses a sand blasting apparatus for small diameter pipe fitting inner walls. The sand blasting apparatus comprises a sand storage box which is used for storing abrasive, and a sand mixing box which is used for mixing sand; a discharge port arranged in the bottom surface of the sand storage box and a sand inlet arranged in the bottom of the sand mixing box are communicated by a sand inlet pipe; the sand inlet of the sand mixing box is under the discharge port of the sand storage box; an included angle formed by the sand inlet pipe and the central line of the sand mixing box is 42 to 45 DEG; a sand mixing box sidewall below the sand inlet is provided with an air inlet, and the air inlet is communicated with an air inlet pipe, wherein the air pressure in the air inlet pipe is more than 0.5MPa; the top sidewall of the sand mixing box is provided with a sand outlet; and the sand outlet is communicated with the pipe fitting waiting for sand blasting by a sand outlet pipe. The sand blasting apparatus helps to change the suction mode of the abrasive in sand blasting, and helps to solve a sand blasting problem of the inner wall of a small diameter pipe fitting with two unsealed ends and an internal diameter of 2 to 10mm.

Description

technical field [0001] The invention relates to a device used for surface treatment, in particular to a sand blasting device. Background technique [0002] Sand blasting is mainly used for the surface treatment of parts and components. It refers to the use of compressed air as the power to form a high-speed jet beam of abrasives such as copper ore, quartz sand, corundum, iron sand or sea sand at a high speed, and spray it onto the surface of the workpiece to be treated. In order to remove rust, scale or other surface dirt, the impact and cutting effect of the abrasive on the surface of the workpiece can be used to obtain a certain degree of cleanliness and suitable roughness on the surface of the workpiece. Sand blasting is the pre-treatment of surface treatment methods such as painting, which can improve the mechanical properties of the workpiece surface, improve the fatigue resistance of the workpiece, increase the adhesion between the workpiece surface and the coating, an...

AI Technical Summary

Problems solved by technology

But for diameters smaller than When sandblasting the inner wall of the pipe fittings, due to the small diameter of the pipe fittings and the large air resistance in the lumen, this type of device will lose the ejection and suction effect, so that the sandblasting treatment of the inner wall of the pipe fittings cannot be achieved.

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