A self-priming centrifugal pump body with precisely adjustable tongue gap
A centrifugal pump and tongue separator technology, which is applied to the components, pumps, and pump components of the pumping device for elastic fluid, can solve the problems affecting the self-priming performance of the self-priming centrifugal pump, and achieve the effect of precise adjustment.
Active Publication Date: 2017-09-05
JIANGSU UNIV
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Problems solved by technology
However, this method will change the gap between the volute tongue and the outer diameter of the impeller, which will affect the self-priming performance of the self-priming centrifugal pump.
Method used
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Embodiment Construction
[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.
[0022] Such as figure 1 As shown, the pump body of the self-priming centrifugal pump is 340mm high * 250mm long * 160mm wide, mainly including S-shaped pipe 1, volute 2, gas-liquid separation chamber 3, liquid storage chamber 4 and return hole 5 and other key components, of which the impeller 6 is outside Diameter 180mm. The movement and adjustment of the tongue gap is realized through the cooperation of the movable tongue part 7 processed with tooth grooves and the gear 8. The gear 8 and the external bolt column 10 are connected by a key to realize the fast connection. The marking pointer on the head of the bolt column 10 Point to the scale on the outer edge of the cover plate 9 holes representing the actual size of the tongue gap at this time, so as to realize the prec...
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The invention provides a self-priming centrifugal pump body. The pump body is combined with various impellers in different sizes by adjusting a movable separation tongue part to form self-priming centrifugal pumps of various performance specifications. The movable separation tongue part is specially designed on the pump body. When a user changes the flow and the lift of the pump according to the use performance requirement, the impellers with different outer diameters are replaced or the outer diameters of the impellers are cut, and meanwhile the movable separation tongue part is adjusted, so that the separation tongue gap which is the distance between the outer diameter of a pump impeller and the parallel arcs on the separation tongue of the pump body is precisely controlled between 0.5 mm and 1.5 mm. By adjusting the movable separation tongue part, people can change the flow and the lift without the need of changing the whole pump body, and the self-priming performance of the self-priming centrifugal pump can be guaranteed.
Description
technical field [0001] The invention relates to a pump body of a self-priming centrifugal pump, in particular to a pump body with a precisely adjustable tongue gap. Background technique [0002] The self-priming centrifugal pump is a special water pump. Compared with ordinary water pumps, it does not need to install a bottom valve. Except for the first start-up, it does not need to be filled with water. It can discharge the air in the water inlet pipe by itself and suck the water up. The self-priming centrifugal pump is easy to operate and has strong adaptability. It is widely used in agriculture, fire protection, mining, municipal administration, electric power, chemical industry and other departments. It is especially suitable for mobile irrigation, mobile work, frequent start-up and difficult irrigation. [0003] The hydraulic design of the self-priming centrifugal pump impeller and the pump body itself directly affects the hydraulic performance and self-priming performan...
Claims
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IPC IPC(8): F04D29/42F04D29/46
Inventor 李红陆天桥陈超
Owner JIANGSU UNIV