Central-mounted single-stage and multi-stage double-suction turbine synchronous suction and discharge pump

Abstract

The invention discloses a centre-opening single-stage or multistage dual-suction turbine synchronous pump, which comprises a pump body and an automatic control system. Wherein, it is characterized in that: the intake of pump is downward and vertical to the axis of centre opening surface and supported at the center; the top of pump or the intake is mounted with fan, whose air inlet is through to the inlet chamber or the intake of pump. The invention can realize synchronous discharge and suction, that it can discharge water when started, and discharge complete when stopped, to prolong the service life. The invention can avoid protection in winter to save cost. And it has high efficiency and better energy saving effect; therefore, it can save 1 / 2 cost than present pumps.

Description

(1) Technical field [0001] The invention relates to a pump, in particular to a turbine synchronous exhaust-suction pump with self-priming function, which can discharge water when the pump is turned on, and empty when the pump is stopped, and does not need heat preservation measures in winter. (2) Background technology [0002] At present, domestic enterprises in the fields of environmental protection, fire protection, petroleum, chemical industry, power station, metallurgy, pharmaceuticals, urban water supply and drainage, etc., widely use single-stage double-suction clean water pumps at a general level that do not have self-priming function at all. The bottom valve can only be used for water injection or vacuum pump to start the pump. The bottom valve is easy to leak and has poor reliability. When the pool is deep, the suction lift of the general double-suction pump cannot be reached, so a low-level pump room must be dug or a high-level pool must be built, and the infrastru...

AI Technical Summary

Problems solved by technology

The bottom valve is unreliable. Once the fine particles or debris in the liquid stay in the bottom valve, it will cause the bottom valve to leak and the pump will not start

The vacuum pump takes a long time to divert water, heat preservation measures are required in winter, the infrastructure cost is high, and the flow rate exceeds 10,000m 3 / h, the suction height of the pump can only reach 3.5m, and a low-level pump room or a high-level pool must be built, which drastically reduces the scope of use of the pump

[0004] 2. The seal of the submersible pump is vulnerable, the motor is easily damaged by water, the cable joint is not well sealed, the motor is short-circuited, and maintenance is difficult

[0005] 3. The guide bearing of the submerged pump is easily damaged, which leads to overheating of the bearing, the vibration of the unit makes the pump unable to work, the maintenance lifting height is high, the maintenance equipment is expensive, and the maintenance cost is high

[0006] 4. Generally, the scope of application of self-priming pumps is narrow, and the flow rate does not exceed 5000m 3 / h, the self-priming time is long, the efficiency is 8-10% lower, and the power consumption is large

[0007] 5. Vertical diagonal flow pump, high cost, inconvenient maintenance, high cost, heavy unit weight, high infrastructure cost

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