Sewage pumping station is the main industrial pump group. Catch pool in the form of a round, semi-circular and rectangular and other forms, the mouth should adopt open-type, around the addition of balustrades or short walls, plus ceiling, beam hooks or trolleys to meet the mud or gravel Claim. Set the principle of pool arrangement The arrangement of the pool should be considered to improve the hydraulic conditions of the pump suction to reduce stagnation and eddy current in order to ensure the normal operation of the pump. Layout should pay attention to the following points. (1) The suction pipe or impeller of the pump shall have sufficient depth of immersion to prevent the ingress of air when air is drawn in or vortexed. (2) The suction bell of the pump should be kept at the required distance from the bottom of the tank. (3) The water flow should be smooth and swirless near the pump suction nozzle. Each pump inlet and outlet flow conditions are basically the same, do not suddenly increase the water flow or change direction. (4) The inlet flow rate of the sump and the flow rate at the suction inlet of the pump should be as slow as possible. Sewage pump room should be set before the catchment gate or sluice gate, in the pool cleaning or pump maintenance when used. The volume of the sump volume sump is related to the change of the flow entering the pump station, the type of the pump, the number of working platforms, the working system, the nature of the pumping station, and the starting time. In meeting the requirements of installing grille and suction pipe to ensure that the water pump working conditions and the timely removal of inflow of sewage under the premise, the collection tank should be as small as possible pump room (machine room) layout unit layout sewage pumping station The number of units in the general does not exceed 3 to 4 units; in order to meet the safety protection and ease of unit maintenance, the main pumping station layout and channel width units should meet the following conditions. (1) The distance between the protruding basic parts of the two adjacent units and the distance between the protruding part of the unit and the wall, and the width of the main channel of the pumping station are the same as those of the water pumping station. (2) Pump rooms without crane lifting equipment shall generally have a passage of 0.5m wider than the width of the unit on one side of each unit, but not less than the first regulation. (3) The distance between the protruding basic parts of two adjacent units and the distance between the protruding part of the unit and the wall, and the width of the main channel of the pumping station are the same as those of the water supply pump room. Clearance between two adjacent units: when the motor capacity is less than or equal to 55kW, not less than 0.8m; motor capacity greater than 55kW, shall not be less than 1.2m. (4) In the pump room with bridge lifting equipment, there should be lifting equipment channel. (5) When it is necessary to carry out on-site overhaul in the pump room, the location of the overhaul equipment shall be reserved. The area of ​​the overhaul equipment shall be determined according to the overall dimensions of the largest equipment (component) and shall be provided with a passage of not less than 0.7m in width. Determination of internal pump station Self-filling pump stations set the floor and the bottom plate of the machine is basically the same height, sewage pump shaft elevation by the horns height and suction pipe fittings size projections to determine. For non-self-filling pumping station, due to the use of the pump vacuum suction height, the machine floor elevation is usually higher than the sump floor elevation, the pump shaft elevation according to the pump allows suction vacuum height and local conditions to determine; pump foundation elevation Calculated by the pump shaft elevation, and then you can determine the machine floor elevation. The height of the upper platform of the machine should usually be 0.5m higher than the outdoor floor. Pipe layout (1) suction pipe layout Each sewage pump should be provided with a separate suction pipe. This will not only improve the pump suction conditions, but also reduce the possibility of pipeline blockage. The general suction pipe flow rate l. 0 ~ 1.5m / s, not less than 0.7m / s. When the suction pipe is short, the flow rate increased properly. Suction pipe inlet should be installed bell mouth, the diameter of the suction pipe diameter of 1.3 to 1.5 times. Suction pipe in the cistern in the location and the distance between the various parts requirements, refer to the relevant provisions of the water pumping station. When the drainage pump room designed to self-filling, the suction pipe should be provided with a gate valve (except for axial flow pump), in order to facilitate overhaul. Non-self-filling work of the pump, the use of vacuum pumps, water is not allowed to install the end of the valve at the end of the valve. Due to the end valve can easily be blocked, affecting the pump start, but also to increase the suction pipe resistance. (2) Pressurized water pipe layout pressure pipe flow rate is generally 1.0 ~ 2.5m / s. When two or more than one pump with a pressurized water pipe, if only one pump work, the flow rate of not less than 0.7m / s, in order to avoid the deposition inside the pipe. When a single pump outlet pipe pressure water in the tube, white dry tube access may not be the bottom, so as not to stop the pump, the impurities deposited here. When two or more than one pump and a water outlet pipe, the outlet pipe of each pump should be set gate valve, and the check valve between the valve and the pump; such as the use of a separate outlet, and is free to go out , Generally do not set check valve and gate valve. Piping pipeline pumping station installed generally used. Suction pipes are generally placed on the ground. Pressure pipe and more use of overhead installation, located along the wall bracket. Pipeline shall not be allowed to pass above the electrical equipment, shall not hinder the station traffic, hoisting equipment and maintenance, the passage from the bottom of the pipe should not be less than 2.0m, the pipeline should be solid. Pumping room floor laying pipe, should be set according to the needs of cross-facilities.
Galvanized Roller Shutter Door
Using advanced hot-dip galvanized material , precision roll forming production process, polyurethane foam that free of hydrofluorocarbon inside door, light weight, high strength, appearance nice. The doors have advantages of tamper anti-theft , noise isolation thermal insulation and corrosion resistance;the doors are widely used in shops, garages, houses, supermarkets, warehouses and industrial plants,etc.
Depending on the characteristics of the buildings,we can choose interior, exterior and intermediate three different installation ways, doors stay in the upper part of door after rolling up , this could save garage space, and also could keep the garage clean and beautiful by prevent the mud, rain and snow ,etc going into the garage.
Galvanized Roller Shutter Door,Standard Galvanized Roller Shutter Door,Automatic Galvanized Roller Shutter Door,Steel Roller Shutter Safe Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.selfrepairinghighspeeddoor.com