German Timmer Pneumatik pump Timmer Pneumatik model Timmer Pneumatik price

Timmer Pneumatik pumps are pumps in which the vanes in the rotor slots contact the pump casing (stator ring) to press the sucked liquid from the inlet side to the outlet side. There are two types depending on the type: one) specifically referring to vane pumps among positive displacement pumps. Two) referring to the three pumps of dynamic pumps (centrifugal pumps, mixed-flow pumps, axial-flow pumps) or other special pumps. Such pump products are generally not called vane pumps. However, in monographs, vane pumps almost entirely refer to centrifugal pumps, mixed-flow pumps, axial-flow pumps, etc. According to whether the theoretical displacement per revolution is a fixed value or a variable value, they can be divided into vane-type variable displacement pumps and vane-type fixed displacement pumps.

Timmer Pneumatik pump working principle

Its operating principle is similar to that of a single-acting vane pump. The difference lies only in that the stator surface consists of eight parts: two long-radius arcs, two short-radius arcs, and four transition curves, and the stator and rotor are concentric. When the rotor rotates clockwise as shown in the figure, the volume of the sealed working chamber gradually increases at the upper left and lower right corners, forming the oil suction area; it gradually decreases at the lower left and upper right corners, forming the oil pressure area; there is an oil sealing area between the suction area and the pressure area to separate them. For each revolution of the rotor of this pump, each sealed working chamber completes the oil suction and oil pressure actions twice, so it is called a double-acting vane pump. The two suction areas and two pressure areas of the pump are radially symmetrical, and the hydraulic pressure acting on the rotor is radially balanced, so it is also called a balanced vane pump. The instantaneous flow rate of a double-acting vane pump is pulsating, and the pulsation rate is small when the number of vanes is a multiple of 4. For this reason, the number of vanes for double-acting vane pumps is generally taken as 12 or 16.

Timmer Pneumatik pump precautions for use

1) Single-stage pump: i.e., there is only one impeller on the pump shaft. 2) Multi-stage pump: i.e., there are two or more impellers on the pump shaft, and the total head of the pump is the sum of the heads generated by n impellers. 3) Low-pressure pump: pressure is lower than 100 meters of water column; 4) Medium-pressure pump: pressure is between 100 and 650 meters of water column; 5) High-pressure pump: pressure is higher than 650 meters of water column. 6) Single-side inlet pump: also called single-suction pump, i.e., there is only one water inlet on the impeller; 7) Double-side inlet pump: also called double-suction pump, i.e., there is a water inlet on both sides of the impeller. Its flow rate is twice that of a single-suction pump, which can be roughly regarded as two single-suction pump impellers placed back-to-back. 8) Horizontal split-case pump: i.e., there is a joint seam on the horizontal plane passing through the axis centerline. 9) Vertical joint surface pump: i.e., the joint surface is perpendicular to the axis centerline. 10) Horizontal pump: the pump shaft is in a horizontal position. 11) Vertical pump: the pump shaft is in a vertical position. 12) Volute pump: after water comes out of the impeller, it directly enters the pump casing with a spiral shape. 13) Guide vane pump: after water comes out of the impeller, it enters the guide vanes set outside it, and then enters the next stage or flows into the outlet pipe. 14) Self-priming centrifugal pump: the pump shaft is lower than the surface of the suction pool, no water filling is required at startup, and it can start automatically. 15) Suction centrifugal pump (non-self-priming centrifugal pump): the pump shaft is higher than the surface of the suction pool. Before starting, the pump casing and suction pipe need to be filled with water first, and then the motor is driven to make the impeller rotate at high speed. Water is thrown out of the impeller under the action of centrifugal force, a negative pressure is formed at the center of the impeller, and water in the suction pool enters the impeller under the action of atmospheric pressure, and is then thrown out of the impeller into the pressure water pipe under the action of the high-speed rotating impeller.

Timmer Pneumatik pump industry applications

Centrifugal pumps have a compact structure, wide flow and head ranges, are suitable for mildly corrosive liquids, offer various control options, provide 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. Examples include hydraulic ash removal in thermal power plants, slurry transport in metallurgical beneficiation plants, and coal slurry and heavy medium transport in coal washing plants. When a centrifugal pump is in operation, the pump needs to be placed on land, the suction pipe is placed in water, and the pump needs to be primed for startup. Due to structural limitations, for sludge pumps and submersible centrifugal pumps, the motor needs to be placed above the water surface while the pump is submerged in water during operation; therefore, it must be fixed, otherwise, if the motor falls into the water, it will result in motor failure. Moreover, since the length of the long shaft is generally fixed, pump installation and use are more troublesome, and the application scenarios are subject to many restrictions.

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