1, the production technology behind the current domestic impact Sand, mostly imitation, less developed, started earlier but slow development, the manufacturers of similar products. While with the price advantage in the market to take advantage of the number of sales, compared with foreign advanced level is still lagging behind in terms of technical quality: Domestic Sand wearing parts (butt head, manifold, bearing plate, back plate, impeller body) life expectancy is lower than the foreign advanced products. 2, made a number of sands, but generally smaller scale crusher manufacturers, low management level. The sand there are many companies in various parts of China, but are generally less natural mechanisms mining more production, fewer small-scale production of large scale informal enterprises, which caused great difficulty for the management of sand industry. 3. The need to improve standards. Compared to other industries, policy and planning on the introduction of small gravel, part of the policy and the relevant provisions of the relatively backward. People on the concept of sand to cement production lighter. This restricts the production of sand in large part. Notes editor Sand belong heavy equipment, its installation and use needs to have certain rules and instructions. Which when used in the installation book especially, let's take a look at what areas need to pay attention to the content of its installation: a, Sand mounted on a concrete foundation, the foundation should bear the whole weight several times. Sand can be installed, depending on the job site or in outdoor work installed in the plant. When installed, it should Sand leveling vertical and horizontal axis. Sand should be set above the lifting equipment, lifting equipment weight by Sand maximum weight considerations, should be left at the top of Sand lifting space should be left at the side of Sand appropriate space to prepare for when the detection. Second, after the sand-site installation should still conduct a comprehensive inspection. Check the oil pipe is connected securely before shipping the unit to be tested once heavier oil Sand, adding extra vehicle lubrication or 3 # lithium grease. Check the grid component lubricant tube is connected firmly, carefully check whether there is any foreign matter on the impeller. Third, check the motor belt between now inching motor rotation should be consistent with the Sand Sand vsi direction signs, if contrary to label directions, motor wiring should be adjusted so that it is consistent with the signs of rotation, rotation prohibited . Dual-motor drive, spindle motor assembly with both sides, the wind do not have the same number of belt and spindle assembly is connected, should be adjusted accordingly straight. After checking correct before production, pre-production is first empty load test machine, the test machine to confirm no problem before the official production. Sand (impact crusher) and extrusion compared crusher has the following outstanding advantages: crushing ratio, impact crusher crushing ratio can reach 50 or more, and squeeze hard to exceed crusher 20. More suitable for single-stage crushing of the occasion; good product particles. Flakiness percentage content of the impact crusher product may be less than 10%, while the percentage of flakiness content extrusion crusher will be higher than 15%. Thus, in case of need for new Sand cubic particles, usually impact crusher as the final breaking equipment to produce concrete aggregate; due to the impact crusher is the use of the principle of broken material impact, wear very fast in use. This defect, in quite a long time, to limit the scope of the impact crusher. Only be used for crushing of hard materials. Impact crusher, Yuxin Senda (certified), Ezhou Sand provided by Henan new Senda Heavy Machinery Co., Ltd.. Henan new Senda Heavy Machinery Co., Ltd. (www.hnsdzg.com) is a leader in Zhengzhou, crushing grinding equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Yuxin Senda in leadership with the staff warmly welcome all inquiries negotiations to create Yuxin Senda a better future.