Horizontal slurry pump installation points, horizontal slurry pump installation steps illustration

Because of the location of the motor and pump, horizontal slurry pump installation is too much trouble, but as long as the slurry pump installation points, step by step to install, nor is it an impossible task. Below, Xiaobian to share the horizontal slurry pump installation steps, let us learn together! Horizontal slurry pump installation points, horizontal slurry pump installation steps diagram (1) before the installation of the inspection pump The factory has been tested and tested, in order to ensure that it is in good working condition, must be properly installed. Before installation, please first press "packing list" to check the equipment model, parameters are correct, the parts are complete and complete, the technical information and the quality of the random carry is complete. After verification, should read the relevant technical information, to master the relevant technical requirements and operating essentials before installation, should not blindly operate. (2) Installation of Pumps The horizontal pumping unit should be installed with secondary grouting method. After installation, the center line of the unit should be consistent with the centerline of the foundation; the deviation of the center height of the unit from the designed value should not exceed ± 2mm, and the horizontal tolerance of the unit should be 0.1 / 1000. For the direct drive coupling with the pump unit, the coaxiality of the unit is generally guaranteed by the coupling. There are two ways to find the coupling: one is to match the feeler gauge with the feeler gauge. Find the outer circumference of the coupling with a knife-edge gauge and ensure that the maximum error δ of each pair of couplings should be no more than 0.10mm [Fig. 3 (a)]. Check the gap between each pair of couplings with a feeler gauge whose maximum error Δ (Δ = δ1-δ2) should not exceed 0.10 mm [Fig. 3 (b)]. (a) (b) (c) Figure 3 Another way to find a coupling is to use a magnetometer with a feeler gauge to find the coupling. The magnetometer fixed on one side of the outer cylindrical coupling and crank, dial probe on the outer surface of the coupling on the watch dial should not beat more than 0.15mm [Figure 3, (c )]. The clearance of the coupling is measured with feeler gauge, the maximum error of which should not exceed 0.10mm [Fig. 3 (b)]. For belt driven pump units, should ensure that the pump shaft and motor shaft parallelism, usually with a pulley to find out. The center from the smaller, you can use the ruler by flat pulley face to find positive. Center distance is larger, you can use the cable by flat belt end face to find positive, as shown in Figure 4. Figure 4 (3) pump inlet and outlet section configuration and requirements ① suction pipe suction pipe diameter: suction pipe diameter should be the same as the diameter of the pump inlet or pump slightly larger diameter, the principle is to not only prevent the pump cavitation, but also can not Slurry forms deposits in the pipeline. Inlet port gate valve: In order to facilitate the maintenance pump, suction port gate valve should be set, its diameter and suction pipe diameter the same. In the suction inlet and suction pipe should be provided between the telescopic section, in order to disassemble the pump. ② discharge pipe diameter: the discharge pipe diameter and the nature of the slurry, settling velocity, under normal circumstances, the discharge diameter and pump outlet diameter equal to or slightly larger. Exit gate valve: outlet gate valve should be the same diameter and discharge. Pressure Gauge: Located on the straight section between the pump outlet and the first valve. Pipe layout shown in Figure 5: a) High-level layout b) Low-level layout Figure 5 Pump Import and Export Pipeline ③ pump pipeline configuration considerations Pipe diameter to consider the system resistance, the critical settlement of the slurry velocity and other factors. Suction tube should be as short and straight as possible. In the suction inlet of the pump, it is advisable to provide a straight pipe section of the same diameter as the inlet and its length should not be less than 3 times the inlet diameter. Suction tube flow rate is generally 1.5 ~ 2.5 m / s, depending on the transport slurry settling velocity. When using high-position pump suction pipe should avoid the formation of cavitation, it is recommended to use the bus on the level of the adjustable tube, shown in Figure 6. Figure 6 on the bus for the level of adjustable tube valve with flow control, the control valve should be located at the pump outlet, not allowed to adjust the valve on the inlet pipe to avoid cavitation. (4) Shaft sealing water and cooling water pipe configuration and requirements Shaft seal water and cooling water pipes should be configured as shown in Figure 7. Oil-lubricated brackets do not have cooling water. When using grease to lubricate the packing, there is no sealing water in the shaft. a) Seal water b) Cooling water Figure 7 shaft sealing water and cooling water configuration shaft seal water pressure and flow according to Table 1. Table 1 shaft seal water pressure and flow Note: p-single-stage pump outlet pressure; i-series pump series; pi '-i pump shaft seal water pressure cooling water pressure of 0.05 ~ 0.2 MPa, cooling water flow 1 ~ 3 m3 / h. Shaft seal water and cooling water interface size shown in Table 2. (5) Packing (packing) filling requirements ① packing materials and options Under normal circumstances, when the pump working pressure below 0.5MPa, you can use butter cooking cotton packing or oil asbestos packing; when the pump Working pressure above 0.5MPa, you can use PTFE packing or PTFE impregnated PTFE packing. ② packing specifications in Table 2. ③ Filler filler requirements Filler specifications must meet the size requirements of the filler culverts, the adjacent two laps filler interface should be staggered 120 °. (6) Mechanical seal Mechanical seal is a kind of face seal, with no leakage, low power consumption and other characteristics. Mechanical seal for slurry pump in particular need to pay attention to the following questions: ① The mechanical seal used in our factory is generally balanced double-sided special mechanical seal, with cooling water short tube, pressure gauge. ② The mechanical seal used by our factory is manufactured by our factory with professional mechanical seal factory and has been installed and debugged well at the factory, so the user can no longer debug it. ③ mechanical seal part of the two exposed pipe joints, respectively, shaft seal water import and export, with the pump outlet on the same side of the outlet, the other side of the inlet. ④ equipped with mechanical seal pump before use; must be connected to the shaft seal water, stop the pump 3 minutes before closing the shaft seal water. ⑤ to provide users with mechanical seal spare parts, the manufacturer usually mechanical seal installed in the stuffing box, as a kit available. ⑥ Mechanical seal with mechanical seal pump and mechanical seal Spare parts should not be used for a long time, the mechanical seal should be filled with mechanical oil N46, to prevent the mechanical seal parts rust and internal rubber failure. (7) Filling requirement of lubricating oil The bracket with thin oil lubrication should be filled with N32 (winter) or N46 (summer) oil at the position of oil line before driving. (Editor: Huang Nengwen QQ:)