Multistage centrifugal pump capable of enhancing self-absorption
A centrifugal pump and self-priming technology, which is applied to the components, pumps, driving pumps, etc. of the pumping device for elastic fluids. The effect of enhancing and improving stability
Pending Publication Date: 2018-03-13
力坚泵业浙江有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to address the problems existing in the prior art. The purpose of the present invention is to provide a multi-stage centrifugal pump with enhanced self-priming to address the shortcomings of the current self-priming multi-stage centrifugal pump, which have low suction lift and poor self-priming stability.
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[0019] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0020] Such as figure 1 As shown, the enhanced self-priming multistage centrifugal pump includes an annular perforated plate 1 for stabilizing the cavity of the pump casing. The perforated plate is installed between the centrifugal pump outlet 8 and the return hole 4, close to the centrifugal pump outlet 8 . When the water is pre-filled in the pump casing cavity 13 of the multistage centrifugal pump, the water level in the inlet cavity 7 also reaches the upper edge of the water level baffle 6. After the motor 9 is started, the multistage centrifugal pump begins to enter the self-priming stage, and the inlet cavity body The gas-liquid two-phase fluid in 7 is sprayed into the pump casing cavity 13 after being pressurized, a...
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The invention provides a multistage centrifugal pump capable of enhancing self-absorption, belongs to the technical field of fluid machinery, and solves the problems of weak self-absorption stabilityand weak self-absorption speed in a traditional multistage centrifugal pump. The multistage centrifugal pump capable of enhancing self-absorption comprises a motor and a pump shell; the pump shell isprovided with a multistage centrifugal pump inlet and a multistage centrifugal pump outlet; a pump shell cavity for connecting an inlet with an outlet is formed in the pump shell; a centrifugal guideblade outer shell is arranged in the pump shell cavity; an inlet cavity is formed in the pump shell cavity; a water baffle plate is arranged at the front end of the inlet cavity, and an impeller inletcorresponding to the centrifugal guide blade outer shell is formed in the back end of the inlet cavity; a reflux hole is formed between the impeller inlet and the water baffle plate; a check valve element is arranged at the bottom end of the reflux hole, and is provided with a spring butting against the edge of the reflux hole; and an annular porous plate is arranged on the centrifugal guide blade outer shell, is mounted between the centrifugal pump outlet and the reflux hole, and is near the centrifugal pump outlet. The multistage centrifugal pump has the advantages of stable performance andthe like.
Description
technical field [0001] The invention belongs to the technical field of fluid machinery and relates to a multistage centrifugal pump, in particular to a self-priming enhanced multistage centrifugal pump. Background technique [0002] The pump is a general-purpose machine with a large volume and wide area and huge energy consumption. There are pumps working almost wherever there is liquid flow. Among all pump products, small multistage centrifugal pumps have the advantages of simple structure, convenient use and maintenance, large flow rate, high lift, and excellent energy efficiency, and are widely used in urban water delivery, industry, mining and other industries. Compared with mainstream small onshore pumps such as jet pumps and vortex pumps, small multistage centrifugal pumps, especially stainless steel multistage centrifugal pumps, have obvious advantages in energy efficiency and strong cavitation resistance. The working noise of the centrifugal pump itself is relativel...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F04D29/42F04D29/66F04D9/02
CPCF04D9/02F04D29/426F04D29/4293F04D29/669
Inventor 包福兵凃程旭许林法许辉君
Owner 力坚泵业浙江有限公司