Home>Bearing knowledge> Description of the characteristics, layout and equipment of vertical axial flow pump

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Description of the characteristics, layout and equipment of vertical axial flow pump

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The vertical axial flow pump is attributed to the vane type pump; this type of pump has large flow, low lift, high specific speed, high power, and floor space. It is often the preferred pump type for agricultural irrigation and drainage, urban water supply and drainage, and thermal power plant transportation of circulating water.
First, the basic layout and effect of the water flowing from the inhalation pool; after the suction of the bell tube; because the impeller chamber impeller blades forced the water to rotate; the water enters the vane body; the energy conversion occurs the lift; the pump body flows through the drainage bend The tube is discharged. The pump is coupled to the central shaft via a coupling (rigid). The bearing below the motor support receives the full downward axial force of the rotor. The central shaft is coupled with the motor shaft with a flexible coupling.
The impeller (hub body) of the axial flow pump has blades; the functional parameters of the adjustable pump can be modified according to the blade; the axial flow pump is divided into the following three types:
The fixed axial flow pump impeller (hub body) and the blade are in a whole layout; the blades are not adjustable.
The semi-conditioning blade axial flow pump impeller (hub body) and the blade are in a combined layout only when the time is stopped; the placement angle of the blade conditioning blade is removed (eg 0°, ±2°, ±4°, ±6°, ±8°) ); the conditioning of its viewpoint is a step,
The fully conditioned blade axial flow pump passes through a set of conditioning organization (mechanical or hydraulic); the pump can be operated manually, electric, computer controlled, etc.; the stepless conditioning of the blade placement angle is performed.
Second, the inlet flow channel and the wet pit, the dry pit equipment axial flow pump (especially the large pump) has strict requirements on the type and scale of the inlet flow channel; it directly affects the function of the pump (such as pump power, cavitation function, etc.), Therefore, it must be traced on the right track (depicting the courtyard).
Wet pit equipment; means that the pump is fully or partially submerged in the pumped liquid; the pump is partially submerged in the suction pool,
Dry pit equipment; means that the pump is surrounded by air; the elbow suction channel is used to divert water into the pump.
Third, the pump equipment base and discharge elbow discharge port orientation double bottom equipment: pump equipment 鄙人基. 缁沧 诘缁. ㄉ匣.. pump axial force is accepted by the bearing of the motor bearing; the bottom of the pump is loaded when the pump is running Under the condition of the bottom of the force = pump shell weight + water weight in the pump casing - pump axial water thrust motor base force = motor weight + pump rotor weight + pump axial water thrust single layer root equipment: pump and electricity into a whole Direct-connected layout; the equipment is on the base of the motor; the pump shaft and the motor shaft are combined with a rigid coupling; when the pump is running, the bottom is loaded:
Motor base. ǖゲ慊. 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每 每
Fourth, the rotor can be pulled out of the layout of the general rotor and pump body for the "all" combination layout; the entire pump must be lifted and dismantled during maintenance; for maintenance convenience; the rotor can be extracted layout. Rotor parts (including guide vane body); Pumping body and discharge elbow are extracted; not only disassembling the discharge line; but also reducing the lifting component.
5. The smoothness of the pump guide bearing and the pump shaft are transported at normal temperature and clear water; the water is smooth and rubber bearing; the medium that can be transported is smooth; the pump shaft does not need to protect equipment; the sand containing water (such as yellow river water) or corrosive medium is transported ( Such as sea water); shaft and guide bearing; use protection (set) tube protection; to make it isolated from the medium; use external water supply smooth.

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