Sand making equipment quality appraisal

sand making equipment is a kind of crushing equipment that uses a high-speed rotating rotor to crush and wear materials. Among them, the rotation speed of the rotor and the width of the feed port are the key factors that affect the crushing effect. At the same time, another important component of the sand making equipment is the screen, which is used to classify the crushed materials according to particle size.
Sand making equipment is widely used in construction, mining, metallurgy and other industries. Taking the construction industry as an example, sand making equipment can conduct coarse and fine crushing of raw materials such as sand and gravel, aggregates, and produce high-quality construction materials such as concrete, cement, and road materials. At the same time,
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2 sand making equipment
3 can also be used to manufacture industrial raw materials such as ceramics and refractory materials.
4 In the case of sand making equipment quality appraisal, Zhongke Testing can provide sand making equipment quality appraisal services.
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Sand making equipment types are divided into fixed sand making equipment and mobile sand making equipment.
fixed sand making equipment includes VSI sand making machine, VSI5X sand making machine and VSI6X sand making machine;
mobile sand making equipment generally refers to mobile sand making machine.

GB/T 5226.1-2019 Mechanical and electrical safety Mechanical and electrical equipment
GB/T 14784-2013 Belt conveyor safety regulations
JC/T 1013-2006 Impact sand making machine

The applicant and the respondent had a liability dispute over the quality of the sand making equipment production line and sued the local court.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" with the sand-making equipment involved in the case.
identification and analysis results: The
identification and analysis expert group discussed the relevant information and on-site investigation of the sand making equipment involved in the case and made a comprehensive quality and technical analysis, and made the following suggestions and conclusions:
1, the sand making machine does not have a dust-proof device, and the dust is serious during the production of the equipment, which does not comply with the relevant provisions of JC/T 1013-2006 "Impact Sand Making Machine". 2. The motor model of the sand making machine does not match the motor model of the sand making machine marked on the drawing.
3, based on the analysis of the actual length ratio of the horizontal part and the inclined part of the large-angle belt conveyor on site, the large-angle belt conveyor does not match the drawings. Considering that customized machinery and equipment will be adjusted according to the site, this error is allowed.
4, the roller of the belt machine head has no protective cover and no anti-pinch wedge, which does not comply with the relevant provisions of GB/T 14784-2013 "Belt Conveyor Safety Specifications".
5, the dust removal pipe is fixed by rope hanging, and the supporting steel pipe and dust removal pipe are not connected with bolts. The fixing method is not reliable and poses safety risks.
6, the electrical wiring in the electrical control cabinet is messy, and there is no equipotential connection between the door and the cabinet body of the electrical control cabinet, which does not comply with the relevant provisions of the standard GB/T 5226.1-2019 "Mechanical and Electrical Safety - Mechanical and Electrical Equipment".