Reverse circulation drilling rig drill rig can be composed of general circulation with positive, reverse circulation drilling mode, the main components are the same drilling rig Which is good, reverse circulation and positive cycle except that: mud circulation system is: no mud pump, But to configure the debris pump (suction pump) with a vacuum pump, or an air suction machine configuration (also known as gas lift method), or hydraulic suction machine (also known as water jet method). But most use a vacuum pump, debris pump (suction pump) with gas lift achieve reverse circulation drilling. Rig: mostly the same as the regular cycle; just airlift drilling of drill pipe (inner diameter greater than 127mm) on to a separate duct (mostly with external supply air duct). Cone Drill: 1. Three-wing single-pointed hollow cone drill for clay soil, silty soil and the sand layer; for mud pump (suction) of reverse circulation. 2. Cone bit: in the sand and gravel and weathered rock drilling rig better prices in the sandy soil, clay soil, gravel layer can also be used; for mud pump (suction) of reverse circulation. 3. Closed cylindrical cone drill: suitable for airlift (air suction lift style) reverse circulation; for clayey soil, silty soil and in the coarse sand layer. 4. Wedge hob drill: suitable for medium and hard rock drilling rig, such as sandstone, limestone, egg boulder formations, rock strength is greater than 30Mpa other may be used. 5. Ball hob drill: socketed Pile drill bit. Rock strength greater than 60MPa may be used. Rig should always check the item 1, the end of the steel cord to conduct inspections of consolidation; the contents of the wire rope inspection is: number of turns of wire rope safety, rope selection, installation, lubrication, wire rope defect inspection production drilling rig, such as wire rope diameter and wear, broken wire number; 2, ready to rig a pulley system checks, the main test items are: a pulley body condition, transition pulley anti-skipping devices; 3, ready to rig running system checks, the main item to be tested : pile driver walking tubes, pallets and hook pipe system status, laying sleepers Long industry machinery (Figure) _ _ Drilling Rig Rig price offered by Shandong Machinery Co., Ltd. Dragon. Machinery Co., Ltd. Shandong Long (www.longyejixie.com) is specialized in "low pressure submersible drilling rig, the air pressure down hole drill, high air pressure DTH drilling rig, crawler drill wells," the business, companies adhering to the "integrity management , the intentions of service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Guo Lei.