German AMS pump AMS model AMS price

AMS pumps generate centrifugal force through impeller rotation, acting on the liquid to impart pressure energy and velocity energy within the impeller. Part of this velocity energy is then converted into pressure energy within the pump casing or diffuser for liquid transfer. They are generally classified by structural characteristics: By operating pressure: low-pressure pumps with pressure below 1MPa; medium-pressure pumps with pressure between 1 and 6.5MPa; high-pressure pumps with pressure above 6.5MPa. By number of working impellers: single-stage pumps with only one impeller on the pump shaft; multi-stage pumps with two or more impellers on the pump shaft. By impeller inlet method: single-suction pumps with inlet on one side; double-suction pumps with inlets on both sides. By pump casing joint form: horizontal split pumps with the split line passing through the axis; vertical joint pumps with the joint surface perpendicular to the axis. By pump shaft position: horizontal pumps with the shaft in a horizontal position; vertical pumps with the shaft in a vertical position. By method of directing impeller discharge to the discharge chamber: volute pumps where discharge enters directly into the spiral-shaped pump casing; diffuser pumps where discharge passes through a diffuser to the next stage or to the outlet pipe. By installation location: submerged pumps with the pump body underwater and the driver above water; submersible pumps with both the drive motor and pump body underwater; inline pumps with the pump and drive motor directly coupled and installed in the pipeline; deep well pumps installed in underground deep wells. By medium application: clean water pumps (including boiler feed pumps, circulation pumps, condensate pumps, etc.); slurry/impurity pumps (including sewage pumps, mud pumps, slag slurry pumps, gravel pumps, material slurry pumps); petrochemical process pumps (including chemical pumps, process pumps, barrel pumps, oil pumps, etc.); vacuum pumps (including liquid ring vacuum pumps, vane vacuum pumps, etc.).

AMS pump structure composition

The basic construction of a centrifugal pump consists of six parts: impeller, pump casing, pump shaft, bearings, sealing rings, and packing gland. 1) The impeller is the core component of the centrifugal pump, featuring high speed and high output. The blades on the impeller play a major role, and the impeller must undergo static balance testing before assembly. The inner and outer surfaces of the impeller must be smooth to reduce friction losses from water flow. 2) The pump casing, also known as the pump shell, is the main body of the water pump. It provides support and fixation and connects to the bracket holding the bearings. 3) The pump shaft connects to the motor via a coupling to transmit the motor's torque to the impeller, making it the primary component for transmitting mechanical energy. 4) Sliding bearings use transparent oil as a lubricant, filled to the oil level line. Excessive oil will leak along the pump shaft, while insufficient oil will cause the bearing to overheat and fail, leading to accidents! During pump operation, the maximum bearing temperature is 85 degrees, with normal operation around 60 degrees. 5) Sealing rings are also known as leakage reduction rings. 6) The packing gland mainly consists of packing, water seal ring, packing sleeve, packing gland follower, and water seal pipe. The primary function of the packing gland is to seal the gap between the pump casing and the pump shaft, preventing water inside the pump from leaking out and air from entering the pump, thereby maintaining the vacuum inside the water pump. When heat is generated by friction between the pump shaft and the packing, the water seal pipe directs water into the water seal ring to cool the packing, ensuring normal pump operation. Therefore, inspection of the packing gland requires special attention during routine pump operation checks. The packing should be replaced after approximately 600 hours of operation.

AMS pump maintenance

Centrifugal pump shutdowns are primarily caused by mechanical seal failure. Failure mostly manifests as leakage, with the following causes: 1) Leakage at the sealing faces of the stationary and rotating rings, mainly due to: end face flatness and roughness not meeting requirements, or surface scratches; particulate matter between the end faces preventing uniform operation; improper installation or incorrect method. 2) Leakage of the compensation ring O-ring, mainly due to: gland deformation, uneven preload; incorrect installation; O-ring quality not meeting standards; incorrect O-ring selection. Practical use indicates that the most common failure location for sealing elements is the end faces of the rotating and stationary rings. Cracking of the rotating and stationary ring end faces in centrifugal pump mechanical seals is a common failure phenomenon, with the main causes being: 3) Excessive gap at the sealing face during installation, preventing the flush fluid from removing heat generated by the friction pair in time; flush fluid leaking through the sealing face gap, causing end face overheating and damage. 4) Vaporization and expansion of the liquid medium, forcing the two end faces apart due to vaporization expansion force. When the two sealing faces are forced back together, the lubricating film is destroyed, causing end face surface overheating. 5) Poor lubricity of the liquid medium, combined with excessive operating pressure, causes asynchronous tracking rotation of the two sealing faces. For example, in a high-speed pump with a speed of 20445r/min, a sealing face center diameter of 7cm, the linear speed reaches up to 75 m/s after the pump starts. If one sealing face lags and fails to track the rotation, instantaneous high temperature causes sealing face damage. 6) Blockage of the seal flush fluid orifice plate or filter screen, resulting in insufficient water flow and mechanical seal failure.

AMS pump industry applications

Centrifugal pumps feature a compact structure, wide flow and head ranges, suitability for mildly corrosive liquids, multiple control options, uniform flow, smooth operation, and low vibration. They do not require special vibration-damping foundations. Equipment installation, maintenance, and repair costs are low, among other advantages. They can be widely used in industries such as electric power, metallurgy, coal, and building materials to transport slurries containing solid particles, such as hydraulic ash removal in thermal power plants, ore slurry transport in metallurgical concentrators, and coal slurry and heavy-medium transport in coal washing plants. When a centrifugal pump is in operation, the pump must be placed on land with the suction pipe submerged in water, and priming is required for startup. Due to structural constraints, submersible slurry pumps and vertical submerged centrifugal pumps require the motor to be positioned above the water surface while the pump is submerged; therefore, they must be securely fixed, otherwise the motor could fall into the water, resulting in motor scrapping. Moreover, because the long shaft length is generally fixed, installation and use of these pumps are more cumbersome, and their application scenarios are subject to many limitations.

Weidou Intelligent Technology professionally sells German AMS centrifugal pumps, AMS gear pumps, AMS diaphragm pumps, AMS centrifugal pumps, AMS piston pumps, AMS vacuum pumps, AMS screw pumps, AMS submersible pumps, AMS peristaltic pumps, AMS lubrication pumps, AMS vane pumps, AMS metering pumps, AMS hand pumps, AMS drum pumps, AMS lobe pumps, AMS booster pumps, AMS liquid pumps, AMS air pumps. Original German imports. Welcome inquiries and orders from users.