IlflRYGfT TIANJIN HARVEST HIGH PRESSURE PUMP MANUFACTURING Co.,Ltd BZWZ200/31.5 BZWZ160/12.5 This series of mine pumps can not only transport water but also emulsified fluid, which is suitable for various medium and thick coal seam water injection, seam exploration drilling, hole expansion, high-pressure water cutting of coal seam, and provides stable hydraulic power for various support equipment, etc., roadway anchor, reduce roadway after water injection, reduce the hardness of coal, and play a wedge and wetting role in the coal seam. Reduce the size of the roof coal fall, improve the recovery of the working face, reduce the electricity, save the amount of gunpowder, and reduce the wear of the shearer cutting teeth. The coal seam can be drilled or by using high-pressure water and the corresponding rotating nozzle, which has the advantages of high precision, strong straightness, and stable tissue structure to ensure the needs of exploration agent holes, and the coal seam can be cut by using high-pressure water and the corresponding nozzle, thus replacing the use of gunpowder Spray dust suppression; Rated pressure from lOMpa to 25Mpa, suitable for the secondary dust suppression system with negative pressure for the coal mining machine mainly used in the comprehensive mining and comprehensive tunneling working face, using the high-pressure pump station composed of the high-pressure water pump and the automatic control water tank set up on the working face, to convert the static pressure water (low pressure) into high-pressure water and transport it to the secondary dust suppression device arranged on the tunneling machine through the high-pressure pipeline laid along the roadway to the working face; The secondary dust suppression device with negative pressure converts the supplied high-pressure water into a controlled mist stream that diffuses out from the dust source of the tunneling machine, mainly used in the occasions where high-pressure spray dust suppression is needed underground in coal mines, and is one of the key equipment for various tunneling machines and coal mining machines to use high-pressure spray to suppress dust on the comprehensive mining and comprehensive tunneling working face. It also has the effect of diluting the gas accumulation near the cutting drum in high gas mines. The above pump type is used for high-pressure water reaming, grouting fire prevention, coal seam water injection, coal seam thickness, anti-burst pressure relief, geological exploration and other directional drilling construction of various projects; effective prevention of coal and gas burst, according to the advantages and disadvantages of the main anti-burst measures in the roadway face, the technical principle of preventing coal and gas burst and the mechanism of the hydraulic partial anti-burst measures, the rotary high-pressure rotary joint and the reaming nozzle are developed, and the drilling rig is used to drive the drilling rod for high-pressure water reaming. The results show that the new high-pressure rotating water jet reaming drill can effectively improve the mechanical strength of the medium, reduce the stress concentration of the medium, improve the effect of gas drainage in low permeability coal seams, promote the release of gas, and enhance the ability to prevent coal and gas burst. The construction of grouting fire prevention, coal seam water injection, coal seam thickness, anti-burst pressure relief, geological exploration and other directional drilling in various projects. 33 HARVEST High Pressure Pump The above pump type is suitable for coal seam water injection operation in coal mine engineering, which changes the physical and mechanical characteristics of coal by pressure water injection, reduces the impact tendency of coal seam. Its main function is to pressure water inject the coal seam before mining operation, and to change the physical and mechanical properties of coal through the physical chemical action of pressure water, so as to reduce the impact tendency of coal seam and achieve the purpose of pressure relief. During the water injection process, the pressure water enters the body and flows along the weak surface after entering the coal body, which plays a role in cracking and scouring, destroys the integrity of the coal body, reduces its strength, and the same time plays a role in dust removal, temperature reduction and improvement of working conditions. For coal seam fracturing/water injection/emulsion It is an efficient and reliable mining equipment, mainly used for coal seam water injection and hydraulic support fluid supply which is suitable for coal seam water injection, underground hydraulic support fluid supply, spray dust prevention and motor water cooling and other purposes. It can discharge gas, moisten coal body, avoid dust flying, and thus ensure safe production and improve coal mining efficiency. HARVEST High Pressure Pump 34