1) 工作原理 以磨液泵和压缩空气为动力，通过喷枪将磨液高速喷射到模具表面，达到光饰铸造模具的目的。磨液是用对模具有保护作用的载液与一定粒度的磨料(白刚玉砂，玻璃丸等人造磨料)按一定配比混合而成，放置在机体下部的贮箱中。工作时磨液泵将贮箱中的磨液以一定压力和流量通过磨液管路输入喷枪。此时，还有一磨液旁路经装置在其中的搅拌喷嘴高速喷出，从而使贮箱中的磨料和载液搅拌均匀；另外压缩空气由外接气源经过(溢)减压阀、电磁阀进入喷枪。喷枪是直接执行液体喷吵工作的主要部件。它与磨液、压缩空气管路系统相连接，设置在机体上部密闭的工作舱内。喷射出的磨液对铸造模具表面冲击磨削后，从圆盘工作台流下，经网孔板返回贮箱，如此循环便完成了对铸造模具的喷射清洗。
1) The working principle takes the grinding fluid pump and the compressed air as the power, sprays the grinding fluid high-speed to the mold surface through the spray gun, achieves the glossy casting mold goal. The grinding fluid is made by mixing the mold protective liquid with certain size of abrasive (white corundum sand, glass balls and other artificial abrasive) in a certain proportion and placed in the lower tank of the machine body. When the grinding fluid pump works, the grinding fluid in the tank is fed into the spray gun through the grinding fluid pipeline with a certain pressure and flow. At this time, there is a mill by-pass through the device in which the high-speed jet mixer, so that the tank of abrasive and liquid mixing uniform; in addition, compressed air from the external source through (overflow) pressure relief valve, solenoid valve into the spray gun. Spray gun is the main component of direct liquid spraying. It is connected with the grinding fluid and compressed air pipeline system and is arranged in an airtight working cabin on the upper part of the airframe. After impacting and grinding the surface of the casting mold with the ejected grinding fluid, the ejected grinding fluid flows down from the disk table and returns to the tank through the mesh plate, thus the ejection cleaning of the casting mold is completed.

2) 清洗工艺 根据芯盒不同的工艺要求，有两种工作方式可供选择：①不加压缩空气，只靠磨液泵供给磨液，通过喷嘴加速射向被清洗铸造模具。适用于定期对芯盒进行一般性清洗保养。②磨液系统和压缩空气系统同时启动，向喷枪同时提供磨液和压缩空气，使其在喷枪内混合后，经喷嘴向铸造模具表面高速喷射气、磨液流。由于有气、泵兼施的工作方式，使得喷出的气、磨液流具有更大压力，被载液包裹着的磨液质点动能加大，有效提高了芯盒的清洗能力(主要适用于芯盒表面树脂结垢的清洗)。
2) According to the different technological requirements of the core box, there are two kinds of working modes to choose: 1) no compression air, only rely on the grinding fluid pump to supply grinding fluid, through the nozzle to accelerate the injection of the cleaned casting mold. It is suitable for regular cleaning and maintenance of core boxes. (2) The grinding fluid system and compressed air system are started simultaneously, and the grinding fluid and compressed air are provided to the spray gun at the same time. After mixing in the spray gun, the grinding fluid and gas are injected into the surface of the casting mold at high speed through the nozzle. Because of the working mode of both air and pump, the pressure of the gas and grinding fluid is higher, and the kinetic energy of the grinding fluid particles wrapped in the liquid is increased, which effectively improves the cleaning ability of the core box (mainly suitable for the cleaning of resin fouling on the surface of the core box).