Paper base Aluminum Oxide Hook and Loop Disc
Paper base aluminum oxide hook and loop discs are one kind of many velcro discs. This kind of velcro discs use D,E grade abrasive base paper as matrix, NBR, phenolic resin as binder, First class aluminum oxide as grain, also called as aluminum oxide velcro discs. Velcro discs are manufactured by complex procedures: pre-coating-make cost - coating -size coat - curing - flexing-molding compound - inspection-and packing procedures, etc. Velcro discs are commonly matched with electrical, pneumatic tools, widely used in wood processing,decoration and etc. This kind of sanding discs have the features of sharp, high efficiency and low cost.
Size: 4" 4.5" 5" 6" 7" 9", Round, Rectangle, Triangle, Iron, Mouse, other special size.
Grit: P24-P1200
Paper Aluminum Oxide Velcro Disc,Paper Aluminum Oxide,Paper Aluminum Velcro Sanding Discs,Paper Aluminum Oxide Velcro Paper Disc Henan Yuteng Abrasives Co.,Ltd , https://www.henanyutengabrasives.com
No leakage pump characteristics, classification, structure and application
No leakage pump including shielding pump, magnetic pump, positive displacement diaphragm pump, electromagnetic pump and so on. According to engineering practices, no leakage pump means shielded pump and magnetic pump, commonly known as the shaft seal pump. No leakage pump including shielding pump, magnetic pump, positive displacement diaphragm pump, electromagnetic pump and so on. According to engineering practices, no leakage pump means shielded pump and magnetic pump, commonly known as the shaft seal pump. In leak-free pumps, shield pumps are more widely used. The shield pump is mainly composed of a pump body, an impeller, a stator, a rotor, front and rear bearings, and a thrust plate. The motor and the pump are integrated. The shield and the rotor are separated by a shielding sleeve made of non-magnetic thin-walled material. The rotor is supported by the front and rear bearings Immersed in the transport medium. After the stator windings are energized, the electromagnetic energy can be transmitted through the shielding sleeve to drive the rotor to rotate, which in turn drives the impeller to transport the medium. Magnetic pump is installed by the shaft and the motor shaft, respectively, the magnetic force generated by the rotor, the motor torque is transmitted to the pump shaft, and then drive the impeller to transport medium. When the motor rotates, the outer magnet rotor attracts each other through the isolation sleeve and the inner magnet rotor to drive the pump shaft and the impeller to rotate. The same number of magnet blocks inside and outside the rotor, forming a one-to-one relationship between the poles, the two synchronous rotation. As the isolation sleeve will be completely closed shaft, so as to achieve no shaft seal, no leakage. No leakage pump is widely used in: chemical production of corrosive media transport, membrane caustic soda chlor-alkali wastewater treatment project and add acid (most of the current domestic membrane caustic soda pump are used my company's products), non-ferrous metals Smelting in the electrolyte transport, pickling process in automobile manufacturing, and pharmaceutical, petroleum, electricity, electroplating, dyes, pesticides, paper, food, textile and many other industries, at -20 ℃ ~ 150 ℃ under the conditions of long- Concentration of sulfuric acid, hydrochloric acid, hydrofluoric acid, nitric acid, aqua regia, strong base, strong oxidants, organic solvents, reducing agents and other corrosive media. No leakage pump manufacturing costs more expensive than conventional pumps, but the use of maintenance costs than the mechanical seal chemical pump is much lower. Because there is no leakage pump machine seal and bearing box, the pump shaft is completely enclosed in the shielding sleeve (isolation sleeve), the variable seal is a static seal, effectively solve the problem of leakage and lubrication; Second, the pump without a leak cancel the coupling, variable Hard connection as a soft connection, effectively solve the vibration and noise problems; In addition, no leakage pump wearing parts significantly reduced (only bearing or ring), the accident is also a relative reduction (only the inner and outer rotor); Finally, No leakage pump to extend the life of the operation, maintenance frequency and time greatly reduced, and significantly reduce the labor intensity overhaul. According to the statistics of ABS device from 2000 to 2001, the damage rate of conventional pump is 6 to 8 times that of non-leak pump, and the cost of replacement of consumable parts by mechanical seal chemical pump is 3 to 5 times of that of similar pump without leakage. Leakage pump main features: 1, the rotor axial force adjustment and balance 2, cooling and lubrication measures 3, shielding sleeve, isolation sleeve and the gap 4, bearings and thrust plate 5, the rotor 6, the status monitoring