Centrifugal pump installation and removal methods

Centrifugal pump installation and removal methods: 1. Centrifugal pump installation preparation (1) check the centrifugal pump and motor, sure that no damage during transport and handling. (2) Check the tools and the crane, and check the foundation of the machine. 2. Centrifugal pump according to the order (1) The entire set of centrifugal pump arrived at the scene, have been installed motor; leveling base, you do not have to remove the centrifugal pump and motor. (2) according to the basic level of centrifugal pump application level leveling, to be based on the foundation cement after the pump is installed on the basis of the level and check the level of the situation, such as uneven, the use of horns to adjust until the level so far, and then through the grouting hole Watering the base and Anchor Bolt holes by concrete. (3) After the cement is dry solid, check whether the base and anchor bolts are loose, then tighten the nuts of the anchor bolts when appropriate, and finally check the level of the entire unit. If there is a slight unevenness, it can be leveled. (4) centrifugal pump suction pipe and discharge pipe should have their own support, not allowed to pipe weight directly by the centrifugal pump. (5) Centrifugal pump shaft and motor rotation direction should be the same, otherwise, to three-phase asynchronous motor as the power, as long as any two of the three leads in the exchange position can be connected. (6) When the centrifugal pump is installed above the liquid level (within the pump suction allowance), the bottom valve should be installed at the end of the suction pipe and a liquid injection hole or valve should be provided on the drain pipe for starting Before the use of irrigation fluid. When the pump is installed below the liquid level, install the control valve on the suction line. (7) The height of the pump must be installed in accordance with the NPSHr NPSHr requirements to avoid cavitation. 3. Pump Removal (1) Unscrew the drain plug on the suspension body, put a net of lubricating oil, remove the motor. (2) Loosen the connecting bolt of the pump body and the bearing body, and separate the impeller, shaft sealing body and bearing body from the pump body. (3) Loosen the impeller nut, remove the impeller and flat key. (4) Remove the shaft sealing body and sealing part, take out the static ring of the mechanical seal, and remove the filler cap by packing and sealing to remove the packing. (5) Remove the rotating part of the mechanical seal and the sleeve from the shaft, and remove the sleeve of the packing seal. (6) Remove the bracket and coupling of bearing body. (7) Remove the bearing gland, water ring rubber, pump shaft and bearings. 4. Centrifugal pump assembly 4.1. Centrifugal pump assembly sequence can basically follow the reverse order of disassembly. Mechanical seal in the press should pay attention to when: (1) rubber O-ring for damage, swelling, if any, must be replaced. (2) moving, static ring surface to maintain absolute clean and painted a small amount of oil. 4.2 centrifugal pump packing seal should be noted by loading: (1) Sleeve cylindrical runout is not greater than 0.05mm. (2) After the filler interception, take the mouth into 45, and according to the shaft before the installation, the size of the filler in a special mold top pressure plastic. (3) packing into the filler cavity, lap each lap packing overlap staggered, before driving the gland should be loosened, gradually compressed after turning.

Expansion Bolt

Expansion Bolt,Stainless Steel Anchor Bolt,Hex Nut Expanding Bolts,Heavy Duty Toggle Bolt

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