To the pulp pump on the structure and installation requirements, listed as follows. 1. Made open impeller, the impeller from congestion, general KCB gear pump clean and easy, however, as long as enough wide open within the impeller flow path, then closed impeller is also possible. 2. With the back side of the impeller, the blade back to prevent pulp in the stuffing box. Similarly, also to the injected water sealing device. 3. The size of the pump body, of course, to ensure that is not affected by the pulp congestion, for cleaning and larger hole is set here and there, or can easily remove the end cover of the structure before the pump inlet structure should make the pulp flow into easily. For high temperature slag pump, the suction pipe to thick, short, and as far as possible make the suction side of the pool of liquid level is high. The entrance of the main blade distortion is mixed flow type, in order to easy to drain flow to pulp. In the case of high concentration, since the pump axis to the suction surface, to have more than 2 meters into the head, and a booster impeller in front of the main impeller. 4. Due to the high concentration of tube friction loss is very big, therefore, should make delivery tube without bending heat pump, branching resistance, etc. 5. Good paper slurry mixing, heat preservation gear oil pump to flow evenly as far as possible to the pump suction at the entrance. 6. Pulp should be contained in the air before entering the impeller discharge as far as possible, this is very important, because of the centrifugal pump in Yang to send the air in the liquid will make a sharp drop in performance. In addition, the remaining of the air can make the pump running is not stable, so needless to say, should be taken to the structure of the air inside the pump body is not saved. Described above for the main item that should be considered in paper pulp pump, air become a bubble in the pulp, enter between the fibre and fibre, at high concentrations, because of the filaments into a tight fit, stirring have can make bubbles left a fiber, but it is not easy to make it reach the free surface. Asphalt heat pump for this reason, the air became hinder the biggest obstacle to improve the performance of high concentration pulp centrifugal pump. Measures taken to this, is in the suction side mixer, crusher, etc. , free of air from air bleeder eduction of vertical installations, but it can't count on it can be completely released. The aris check the type of the company, on the suction side of the pump is equipped with large feeding box, paper pulp in this broad trunk by feeder will air separation, one side to the suction to the pump. In this way you can send slurry concentration is about 8%.